{"id":58176,"date":"2024-06-25T10:20:37","date_gmt":"2024-06-25T10:20:37","guid":{"rendered":"https:\/\/biomedpharmajournal.org\/?p=58176"},"modified":"2024-07-03T17:56:32","modified_gmt":"2024-07-03T17:56:32","slug":"effect-of-enterococin-zinc-oxide-nanoparticles-on-gene-expression-of-rsba-swarming-genes-in-proteus-mirabilis-isolation-catheter-urine","status":"publish","type":"post","link":"https:\/\/biomedpharmajournal.org\/staging\/vol17no2\/effect-of-enterococin-zinc-oxide-nanoparticles-on-gene-expression-of-rsba-swarming-genes-in-proteus-mirabilis-isolation-catheter-urine\/","title":{"rendered":"Effect of Enterococin \u2013 Zinc Oxide Nanoparticles on Gene Expression of rsbA Swarming Genes in Proteus mirabilis isolation Catheter urine."},"content":{"rendered":"\n

Introduction<\/strong><\/p>\n\n\n\n

Proteus mirabilis<\/em> is rod-shaped motile bacterium  that belongs to gram-negative and facultative anaerobic species. P. mirabilis <\/em>is a common causative agent of urinary tract infection (UTI) in the intricate urinary tract, most commonly in patients with Indwelling catheters , The organism shows swarming motility and urease activity.1<\/sup>  P. mirabilis<\/em> grows on an agar surface for a riodof time (which varies depending on the medium,humidity and temperature), at which point it differentiates into swarm cells and proliferates as a population. Hauser originally described P. mirabilis’s <\/em>capacity to swarm across solid surfaces in 1885 as an organized group P. mirabilis<\/em> develops into very long, multinucleate, highly motile hyperflagellated cells during the swarm process.2 <\/sup> During the consolidation phase, swarm cells periodically slow down or cease to move and dedifferentiate into shorter rod-shaped cells. The bull’s-eye pattern is the result of repeated rounds of swarming and consolidation.3<\/sup> Flagellar function is the primary determinant of swarming motility. There is a hierarchy in the expression of the genes involved in flagellar biosynthesis,with a master regulatory transcription factor (or “master regulator”) controlling the expression at the top. Master regulators control the synthesis of flagellar basal bodies, stimulate the expression of flagellar genes, and act as an integrating point for environmental signals. The formation of flagellar membranes is intricate, and there exist species-specific transcriptional and posttranscriptional regulatory systems.4 <\/sup>Swarming behavior Is partially controlled by Rsba gene product. rsbA<\/em> may operate as a protein sensor of environmental circumstances, and rsbA<\/em> was stimulated swarming production.5<\/sup> The swarming regulation gene, rsbA<\/em> . Due to its distinct features and the noteworthy importance of nanoparticles, it has emerged as the most innovative, cutting-edge, and well-known area of study in contemporary science. Materials science and healthcare both make substantial use of nanoparticles. Their innovative solutions in various scientific domains have led to their unexpected rise in prominence in recent years.6 <\/sup> With respect to their macroscale counterparts, they are distinct from bulk materials due to their unique physicochemical features (such as color, dispersion, and thermodynamics) and high surface area-to-volume ratio.7 <\/sup><\/p>\n\n\n\n

Nicin A , such as Bacteriocin Produced from lactic acid bacteria, it provides additional protection and a crucial component for research and development of sustainable biotechnologies,including food preservatives for human health and environmental preservation.8 <\/sup>According to.9<\/sup> Onother hand foucus synergestic bacteriocin-nanoparticales syntersis from different method have shown to be a workable solution and the most potent antibacterial agent in vitro and invivo.<\/em>10<\/sup> According to11<\/sup> the biogentic fro synthesis silver nanoparticales from peel lemone green synthesizes and friendly to evnvironent Zinc oxide nanoparticles, or ZnO-NPs, are an important and versatile inorganic molecule that belong to the class of metal oxide nanomaterials due to their unique physical and chemical characteristics. They exhibit good photostability,a high electrochemical coupling coefficient, an extended radiation absorption spectrum, and high chemical stability. Their molecular formula is ZnO.12<\/sup>  Because of their small size, ZnO particles at the nanoscale exhibit potent antibacterial effects. These particles can initiate a number of bactericidal activities, including those in the bacterial surface or bacterial core,once they are within the bacterial cell.13<\/sup> These findings align with other studies that looked at how certain nanoparticles, such zinc oxide, affected the movement of swarming gram-negative bacteria like P. mirabilis<\/em>. As stated by.14<\/sup><\/p>\n\n\n\n

Materials and Methods<\/strong><\/p>\n\n\n\n

Sample collection<\/strong><\/p>\n\n\n\n

Proteus mirabilis <\/strong><\/p>\n\n\n\n

 Between September 2023 and November 2023, patients were referred to the Al-Yarmouk Teaching Hospitals in Baghdad, where urine samples were taken from various sources. There were 150 patients with symptoms of a urinary tract infection. Catheter urine collected midstream was transferred straight to the laboratory for culture in sterile containers. Samples were grown on blood agar and MacConkey agar, a selective and differentiation medium used in conjunction with the previously mentioned media, to establish preliminary identification. The cultures were incubated at temperature 37\u00b0C and  for twenty-four hours 15.<\/sup><\/p>\n\n\n\n

Isolation and identification:<\/strong><\/p>\n\n\n\n

Initial diagnoses depended on the phenotypic characteristics of a colony, including its shape, swarming phenomenon, size, color, texture, and arrangement. All P. mirabilis<\/em> isolates were numbered from (M1 to M70). Proteus spp. appear as pale colonies on MacConkey agar, and swarming phenomena appear on blood agar plates after overnight incubation at temperature 37\u00b0C16<\/sup>. The results were confirmed by the VITEC 2 system.<\/p>\n\n\n\n

Biochemical tests<\/strong><\/p>\n\n\n\n

Several standard biochemical tests were performed to diagnose bacterial isolates according to17<\/sup> <\/p>\n\n\n\n

Indole test<\/strong><\/p>\n\n\n\n

Bacterial colonies were inoculated into test\ntubes containing peptone water medium, incubated for 24 hours at temperature\n37\u00b0C, and then 1-2 drops of Kovacs reagent were gently shaken into the\nmedium.  The appearance of a red ring (indole ring) on the medium’s\nsurface indicates a positive test.     <\/p>\n\n\n\n

Urease Production test<\/strong><\/p>\n\n\n\n

This test was used to detect bacteria’s ability\nto produce urease, an enzyme that converts urea to ammonia and carbon\ndioxide.  The Stab method was used to streak bacterial isolates onto slanted\nurea agar medium, which was then incubated at temperature  37\u00b0C for 24 hours.  As the medium\nchanges color, pink indicates a positive test result and yellow indicates a\nnegative test result.  <\/p>\n\n\n\n

Motility test<\/strong><\/p>\n\n\n\n

The movement medium was inoculated with bacterial\nisolates in the shape of a stab , and the tubes were incubated for 24 hours at\ntemperature 37\u00b0C. Bacterial movement is evidenced by the spread of growth\naround the stab site.<\/p>\n\n\n\n

Detection of Swarming motility<\/strong><\/p>\n\n\n\n

All P.<\/em> <\/em>mirabilis<\/em> isolates\nwere injected into 5% sheep blood agar plates (SBAs), and after 24 hours at\ntemperature 37\u00b0C to allow for revival, they were cultured. The next day, the\nturbidity of a single colony growing on SBA was reduced to 108 CFU\/ml, or 0.5\nMcFarland standard, by diluting it in a saline solution. A saline bacterial\nsolution containing 107 CFU was produced in 100 \u03bcl and used to inoculate\nseveral SBA plates. P. mirabilis<\/em> swarming motility was observed by\ninoculating droplets of the bacterial\nsuspension in the center of the plate. The next day, each isolate’s swarming\nmotility was visually evaluated.<\/p>\n\n\n\n

Detection of <\/strong>the <\/strong>rsbA<\/em><\/strong> gene<\/strong><\/p>\n\n\n\n

 The tested gene was amplified using a primer and traditional PCR. The sequence was obtained fromthe references listed in the table(1) 1819<\/sup>. PCR amplification was carried out in 20 \u00b5l volumes containing 10 \u00b5l of GoTaq Green Master Mix (2X), 1 \u00b5l of primer (10 pmol), 6 \u00b5l of nuclease-free water, and 2 \u00b5l of template DNA. PCR Express (Thermal Cycler, Thermo Fisher Scientific, USA) was used for PCR cycling. The following temperature schedule was used: 5 minutes of initial denaturation at 95\u00b0C, followed by 1 cycle of denaturation at 95\u00b0C for 30 seconds, annealing at 50, 55, or 60\u00b0C for 30 seconds, and extension at 72\u00b0C for 30 seconds. The last extension step was run for seven minutes at 72\u00b0C, after which the reactions were stopped by a ten-minute incubation at 10\u00b0C. The rsbA primer used is indicated in Table (1).<\/p>\n\n\n\n

Table 1: Primers used in this research<\/strong>.<\/p>\n\n\n\n\n\n\n\n\n\n
\n

Primer Name<\/strong><\/p>\n<\/td>\n

\n

Sequence 5\u2019-3\u2019<\/strong><\/p>\n<\/td>\n

\n

Annealing<\/strong><\/p>\n

Temp.(\u00b0C)<\/strong><\/p>\n<\/td>\n

\n

References<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

rsbA<\/em>-F<\/p>\n<\/td>\n

\n

CTATACCTACCGCACCATGT<\/p>\n<\/td>\n

\n

 <\/p>\n<\/td>\n

\n

18<\/p>\n<\/td>\n<\/tr>\n

\n

rsbA<\/em>-R<\/p>\n<\/td>\n

\n

GAAGTCCCATCCGTTGATAC<\/p>\n<\/td>\n

\n

60<\/p>\n<\/td>\n

\n

 <\/p>\n<\/td>\n<\/tr>\n

\n

rpoA<\/em>-F<\/p>\n<\/td>\n

\n

GCGTGTTATAGCCCAGTTGA<\/p>\n<\/td>\n

\n

 <\/p>\n<\/td>\n

\n

19<\/p>\n<\/td>\n<\/tr>\n

\n

rpoA<\/em>-R<\/p>\n<\/td>\n

\n

AGGCTGACGAACATCACGTA<\/p>\n<\/td>\n

\n

 <\/p>\n<\/td>\n

\n

 <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n

Sample collection and bacterial <\/strong>identification<\/strong> of Enterococcus faecium<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n

This\nstudy used 25 samples collected from patients visiting a private dental clinic from\nthe gums.  Samples were collected using\ntransport media, then kept in a cool place until transported to the\nlaboratory.  Samples were then cultured\nin  MRS broth.  Then on MRS agar and incubated for 24 hours\nat temperature 37\u00b0C.  The isolates were\nthen numbered (E1\u2013E25) and cultured on MRS agar. Several tests have been used\nto diagnose. . <\/sup>(20)<\/sup><\/p>\n\n\n\n

Screening for BLIS production <\/strong>by <\/strong>E.<\/em><\/strong> <\/em><\/strong>faecium<\/em><\/strong><\/strong><\/p>\n\n\n\n

Bacteriocin-like inhibitory substance (BLIS)<\/strong><\/p>\n\n\n\n

In samples obtained from MRS broth culture,\nthe antimicrobial spectrum synthesized by the isolated lactic acid bacteria was\nanalysed. After 24 h of incubation at 37\u00b0C and under conditions of an appropriate pH (5.30), yeast extract (1%), glucose (1%) and peptone (1%), the BLIS were recovered by centrifugation a speed  6000 rpm for 15 min (21)<\/sup> and then transferred to new tubes for various\ntests (22)<\/sup>.<\/sup> <\/sup>The isolate with the highest bacterial\nyield was selected using the filtration paper disk (FPD) method.<\/p>\n\n\n\n

Filter Paper Disc Method (FPD)<\/strong><\/p>\n\n\n\n

To test for the presence of inhibitory\nsubstances, bacteria were spread on the surface of MHA plates with the BLIS\npreparation. Five millimeter diameter sterile filter paper discs\nsaturated with 100 \u00b5l of BLIS suspension were placed on MHA plates(23)<\/sup>. The plates were subsequently\nincubated aerobically at temperature 37\u00b0C for 24 to 48 hours after leaving the\nplates two hours at room temperature. The inhibition zones that formed around the\npaper discs were measured and recorded.<\/p>\n\n\n\n

Solutions used for protein determination (Bradford, 1976)24<\/sup><\/strong><\/p>\n\n\n\n

The protein reagent Coomassie Brilliant Blue G-250 (100 mg) was reconstituted in 50 millilitres of 95% ethanol. Phosphoric acid (85% (w\/V) in 100 ml) was added to this solution. A final volume of one liter was achieved by\ndiluting the resultant solution. Brilliant Blue G-250, 4.7% (w\/v) ethanol, and 8.5% (w\/v) phosphoric acid were used.<\/p>\n\n\n\n

Partial purification of <\/strong>the bacteriocin<\/strong>-like inhibitory substance<\/strong><\/p>\n\n\n\n

 Partially purified crud bacteriocin was prepared via precipitation with ammonium sulfate at different concentrations 25.<\/sup><\/p>\n\n\n\n

Ammonium sulfate precipitation<\/strong><\/p>\n\n\n\n

Precipitation of ammonium sulfate was achieved by gradually adding (5 g) ammonium sulfate to the crude enzyme with continuous stirring on ice at different degrees of saturation. After that, the mixture was centrifuged for 20 minutes at 4\u00b0C at 6,000 rpm. When the precipitate at each concentration was dissolved in the appropriate volumes of phosphate buffer solution, the supernatant was discarded. The optimal saturation ratio was ascertained by measuring the enzyme activity. 26<\/sup><\/p>\n\n\n\n

A stock solution of Zinc acetate [Zn.2H2<\/sub>O(CH3<\/sub>CO2<\/sub>)2<\/sub>] was prepared by dissolving 0.01 gm of Zn.2H2O(CH3CO2)2 in 50 ml deionized water 27.<\/sup><\/p>\n\n\n\n

ZnoNP<\/strong> Biosynthesis<\/strong><\/p>\n\n\n\n

For the synthesis of the Zn NPs, 7 ml of BLIS bacteria was added to 3 ml of 1 mM Zn.2H2O(CH3CO2)2 (final concentration) at room temperature with a pH of 5. The flasks were incubated at 30\u00b0C to 35\u00b0C for three days, and each color change was recorded 28. <\/sup>After incubation, the reaction mixture used to prepare the ZnO NPs was centrifuged after 27 hours of incubation, and the precipitate was collected and washed three times with deionized water. The collected nanoparticles in the form of pellets were transferred to a hot air oven set at 120\u00b0C to evaporate all the liquid. The powdered dehydrate was meticulously collected and preserved for additional examination. 29 <\/sup>The formation of nanoparticles can be identified by the change in color. 30<\/sup><\/p>\n\n\n\n

Characterization of ZnO NPs: This study was performed in the Department of Chemistry\/College of Sciences laboratories at the University of Al-Nahrain.   <\/p>\n\n\n\n

UV\u2012Visible (UV\u2012VIS) <\/strong>spectral<\/strong> analysis<\/strong><\/p>\n\n\n\n

The formation of nanoparticles was confirmed by measuring the wavelength of the reaction mixture in a 2 ml quartz cuvette with a path length of 1 cm in the UV\u2012VIS spectrum of a PerkinElmer spectrophotometer with a resolution of Inm. The samples were scanned from 200 -800 nm at a speed of 500 nm\/min with a blank reference used for spectrophotometer correction31.<\/sup><\/p>\n\n\n\n

Atomic force microscopy (AFM) analysis<\/strong><\/p>\n\n\n\n

We used atomic force microscopy to measure the average diameter of the generated nanoparticles. A few drops of the manufactured NPs were applied to a silica glass plate and allowed to dry at room temperature in the dark to produce a thin layer of the material. AFM was then used to scan the deposited glass film plate. 32<\/sup><\/p>\n\n\n\n

X-<\/strong>ray diffraction<\/strong> (XRD)<\/strong><\/p>\n\n\n\n

X-ray diffraction (XRD) was used to determine the crystal structure of the NPs. There are several methods for grinding powdered samples via XRD, depending on the sample matrix, sample size, and\/or amount of generated material needed. 33<\/sup><\/p>\n\n\n\n

Energy <\/strong>dispersive<\/strong> X-ray (EDX)<\/strong> spectroscopy<\/strong><\/strong><\/p>\n\n\n\n

Energy dispersive X-ray spectroscopy (EDX) can be used to determine the elemental makeup of materials, including nanoparticles. When a sample is exposed to a high-energy X-ray, EDX reveals the distinctive X-rays that the elements inside the sample release into the air34.<\/sup><\/p>\n\n\n\n

Field <\/strong>emission scanning electron microscopy<\/strong> (FESEM)<\/strong><\/p>\n\n\n\n

Field scanning electron microscopy (FESEM) was used to examine the morphology of the synthesized nanoparticles. To generate images, an electron beam was used to scan the sample surface. The electrons in the sample interact with the atoms and surface topography.35<\/sup><\/p>\n\n\n\n

Antibacterial activity of ZnONPs<\/strong><\/strong><\/p>\n\n\n\n

The microdilution method was used to determine the minimum inhibitory concentrations (MICs) of ZnONPs against P. mmirabilis<\/em>, which was cultured in the appropriate medium for a full night. We dissolved and diluted the ZnONPs. Different concentrations of ZnONPs (1000, 500, 250, 125, and 62.5 \u03bcg\/mL) were prepared. P. mmirabilis<\/em> on Mueller\u2013Hinton agar was cultured, and an agar well diffusion assay was used to test the presence of ZnONPs36<\/sup><\/p>\n\n\n\n

The<\/strong> minimum inhibitory concentration (MIC)<\/strong> of the ZNO NPS was determined<\/strong>.<\/strong><\/p>\n\n\n\n

The microdilution method can be used to determine the minimum inhibitory concentration (MIC) in culture broth. Coagulants varying in concentration from 1000, 500, 250, 125, and 42.5 g\/ml were produced. One hundred litres of Mueller-Hinton broth was added to the first column of a 96-well microtiter plate, and an additional 100 litres were added to each of the remaining wells. Next, 100 litres of each dilution were added to each well, bringing the total capacity to 200 litres. Each well received ten litres of a modified P. mirabilis<\/em>37<\/sup> bacterial isolate. Microtiter plates were covered and incubated at 37\u00b0C for an entire day.<\/p>\n\n\n\n

RT\u2012qPCR protocol<\/strong>.<\/strong><\/p>\n\n\n\n

RNA purification<\/strong><\/p>\n\n\n\n

Following the TRIzolTM Reagent procedure,\nRNA was extracted from the sample using the following steps:<\/p>\n\n\n\n

Sample lysis<\/strong><\/p>\n\n\n\n

Suspension-grown cells: After centrifuging\nthe culture for two minutes at 13,000 rpm, the supernatant was removed, and 0.5 mL of TRIzolTM Reagent was added to the pellet. The lysate was homogenized by pipetting\nrepeatedly.<\/p>\n\n\n\n

For three-phase separations<\/strong><\/p>\n\n\n\n

The lysate was mixed with 0.2 mL of chloroform in each tube, and the tube cap was then fastened.<\/p>\n\n\n\n

The mixtures were separated into a lower organic phase, interphase, and a colorless upper aqueous phase after being incubated for two to three minutes and centrifuged for ten minutes at 12,000 rpm.<\/p>\n\n\n\n

A fresh tube was filled with the RNA-containing aqueous phase.<\/p>\n\n\n\n

For RNA precipitation<\/strong><\/p>\n\n\n\n

The aqueous phase was mixed with 5 mL of isopropanol, incubated for 10 minutes, and then centrifuged for 10 minutes at 12,000 rpm.<\/p>\n\n\n\n

The supernatant was discarded when total RNA precipitated, and a white gel-like pellet formed at the bottom of the tube.<\/p>\n\n\n\n

For RNA washing<\/strong><\/p>\n\n\n\n

For each tube, 0.5mL of 70% ethanol was added and vortex briefly then centrifuged for 5 minutes at 10000 rpm.<\/p>\n\n\n\n

Ethanol then aspirated and air-dried the pellet.<\/p>\n\n\n\n

For RNA solubility<\/strong><\/p>\n\n\n\n

Pellet was rehydrated in 50 \u00b5l of Nuclease Free\nWater then incubated in a water bath or heat block set at 55-60\u00b0C for 10-15\nminutes.<\/strong><\/p>\n\n\n\n

Determination of RNA and cDNA yields<\/strong><\/p>\n\n\n\n

The Quantus Fluorometer was used to evaluate sample\nquality for downstream applications by measuring the concentration of extracted\nRNA or cDNA. 199 \u00b5l of diluted QuantiFlour Dye was mixed with 1 \u00b5l of RNA or\nCDNA. RNA concentrations were measured after a 5 min incubation period at room\ntemperature in a dark place.<\/p>\n\n\n\n

Table 2: Synthesis of cDNA from RNA using primers for rsbA<\/em> and rpo<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Master mix components<\/strong><\/p>\n<\/td>\n

\n

Volume<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

qPCR Master Mix<\/p>\n<\/td>\n

\n

5 ul<\/p>\n<\/td>\n<\/tr>\n

\n

RT mix<\/p>\n<\/td>\n

\n

0.25 ul<\/p>\n<\/td>\n<\/tr>\n

\n

MgCl2<\/p>\n<\/td>\n

\n

0.25 ul<\/p>\n<\/td>\n<\/tr>\n

\n

Forward primer<\/p>\n<\/td>\n

\n

0.5 ul<\/p>\n<\/td>\n<\/tr>\n

\n

Reverse primer<\/p>\n<\/td>\n

\n

0.5 ul<\/p>\n<\/td>\n<\/tr>\n

\n

Nuclease Free Water<\/p>\n<\/td>\n

\n

2.5 ul<\/p>\n<\/td>\n<\/tr>\n

\n

RNA<\/p>\n<\/td>\n

\n

1 ul<\/p>\n<\/td>\n<\/tr>\n

\n

Total volume<\/p>\n<\/td>\n

\n

10 ul<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n

Results<\/strong><\/p>\n\n\n\n

Identification of Bacterial Isolates<\/strong><\/p>\n\n\n\n

Proteus mirabilis <\/em><\/strong>isolates<\/strong><\/strong><\/p>\n\n\n\n

A total of\none hundred and fifty specimens were collected during the period between September and December 2023 from different urine sources, including urine samples from UTI patients (70) and catheter\nurine (80). All specimens were directly inoculated on MacConkey agar and blood\nagar plates. Of the total number of specimens, 70 (46%) were identified as P.<\/em> <\/em>mirabilis<\/em>, as shown in Table (3). Furthermore, 30 (42.85%) cultured\nurine samples were diagnosed with P.<\/em> <\/em>mirabilis <\/em>strains. Additionally, 40 (50%) of the catheter urine sample cultures were identified as P.<\/em> <\/em>mirabilis <\/em>(<\/em>Figure 1).<\/p>\n\n\n\n

Table 3: Prevalence of Proteus mirabilis<\/em> isolates among the samples<\/strong><\/p>\n\n\n\n\n\n\n\n\n
\n

Source of
samples<\/strong><\/p>\n<\/td>\n

\n

No. of
<\/strong>Samples<\/strong><\/p>\n<\/td>\n

\n

No. (%)
<\/strong> P .mirabilis<\/em><\/strong><\/p>\n<\/td>\n

\n

No.of
<\/strong>proteus<\/em> spp<\/em>.<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

Catheter urine<\/p>\n<\/td>\n

\n

80<\/p>\n<\/td>\n

\n

40(50%)<\/p>\n<\/td>\n

\n

10(12.5%)<\/p>\n<\/td>\n<\/tr>\n

\n

Urine<\/p>\n<\/td>\n

\n

70<\/p>\n<\/td>\n

\n

30(42.85%)<\/p>\n<\/td>\n

\n

5(7.14%)<\/p>\n<\/td>\n<\/tr>\n

\n

Total<\/p>\n<\/td>\n

\n

150<\/p>\n<\/td>\n

\n

70 (46%)<\/p>\n<\/td>\n

\n

15(10%)<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n
\"\"<\/td>\n\n

Figure 1: Incidence of P.<\/em><\/strong> mirabilis<\/em><\/strong> in collected samples<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Biochemical tests for Proteus mirabilis<\/em>.<\/strong><\/p>\n\n\n\n

  <\/strong>Different biochemical tests were performed\nfor each isolate, including the catalase test, urease test, motility test,\nwhich yielded positive results. The indole test yielded negative results.<\/p>\n\n\n\n

Detection of Swarming motility<\/strong><\/strong><\/p>\n\n\n\n

All Pmirabilis<\/em>\nisolates were cultivated on blood agar to test their capacity for\nextravasation. After one day, 40 isolates (66.6%) exhibited narrative movement, according to the\nresults. Figure (2) Reliance on genetics. The isolates (M8 and M3) were found to be\nthe most potent in creating the swarm phenomenon. mirabilis can swarm on various catheter surfaces, and because of this, it has been\nobserved to move from the associated urinary tract infection (CAUTI) through\nthe periurethral skin, the catheter, and the bladder.<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 2: Swarming motility of P. mirabilis<\/em> on blood agar at <\/strong>37\u00b0C<\/strong> for <\/strong>24 h<\/strong>. incubation.<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Polymerase chain reaction (PCR)<\/strong><\/p>\n\n\n\n

PCR revealed that ten P. mirabilis<\/em> isolates containing the rsbA gene were amplified; these isolates were chosen due to their multidrug resistance (MDR) status. After electrophoresis on a 1.5% agarose gel stained with ethidium bromide, at 75 volts for 50 minutes, and under an ultraviolet (UV) trans illuminator, the positive gene result was subsequently confirmed. The present study revealed the presence of a sharp, singular, and nondispersed 180 bp MexB gene band, which was clearly distinguished from the DNA ladder, as demonstrated in Figure (3). Notably, there was no evidence of DNA degradation, as indicated by the absence of any smearing of the gene band. <\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 3<\/strong>: Results of the amplification of <\/strong>r<\/em><\/strong>sbA genes<\/em><\/strong> of bacterial species were fractionated on 2% agarose gel electrophoresis stained with Eth.Br. <\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Identification of Bacterial Isolates of E. faecium<\/em><\/strong><\/p>\n\n\n\n

Isolation of E. faecium<\/em> In this study, twenty-five specimens of E. faecium<\/em> from the gums were collected . were examined, and only 10 isolates were identified, as shown in Table 4.<\/p>\n\n\n\n

Table 4: Prevalence of E. faecium<\/em> isolates among the samples<\/strong><\/p>\n\n\n\n\n\n\n\n
\n

Source of samples<\/strong><\/p>\n<\/td>\n

\n

Other gram -negative bacteria No. Isolates<\/strong><\/p>\n<\/td>\n

\n

No. of<\/strong><\/p>\n

 E. faecium<\/em><\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

Gums<\/p>\n<\/td>\n

\n

15<\/p>\n<\/td>\n

\n

 10 (66.6%)<\/p>\n<\/td>\n<\/tr>\n

\n

Total<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n

\n

10(40%)<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n

Screening of <\/strong>the <\/strong>Antimicrobial Activity of E. faecium<\/em><\/strong><\/p>\n\n\n\n

The bacterial productivity of BLIS was\ninvestigated using the filter paper disc method (FPD) to discriminate the\nisolates that possessed the capacity to produce an inhibitory substance (BLIS). The primary screening revealed that approximately five isolates of E.<\/em> <\/em>faecium<\/em> produced inhibitory substances, and inhibition zones between 10 mm and 26 mm were recorded. After secondary screening, the greatest inhibition diameter of the isolate was detected (E20). The 5 isolates were generally screened for BLIS production utilizing filter paper disk, and\nthe resulting isolate was named E. faecium<\/em> (E20) was the most productive isolate, and the best result was obtained\nwith the filter paper disk method. The best productivity was observed at pH 5, and the optimal incubation conditions were 72 hours. The optimal nitrogen source was 1% yeast extract, and the optimal carbon source (glucose and peptone) was 1%.<\/p>\n\n\n\n

Protein Determination<\/strong><\/strong><\/p>\n\n\n\n

The protein concentrations in the four isolates were 12.81 mg\/ml for E3, 12.43 mg\/ml for E11, 12.32 mg\/ml for E5, and 36 mg\/ml for E20. The E20 isolate was the most productive.<\/p>\n\n\n\n

Partial purification of <\/strong>the bacteriocin<\/strong>-like inhibitory substance<\/strong><\/p>\n\n\n\n

The bacteriocins generated by E. <\/em>faecalis<\/em> were partially purified using a step-gradient elution\nassay with ammonium sulfate in 100 mM phosphate buffer (pH 5). The experimental\nmodel must be followed when bacteriocins are\napplied as crude,\npartially purified preparations.<\/p>\n\n\n\n

Zinc Oxide Nanoparticle Biosynthesis:<\/strong><\/p>\n\n\n\n

In the present study, zinc acetate solution and E. Faecuim <\/em>metabolic filtrated extract were mixed for 20 minutes before a white precipitate became visible to the unaided eye, marking the first visual observation of the ZnO-NPs. The appearance of this white precipitate was caused by the presence of zinc hydroxide, which was coated with the metabolic filtrate of E. faecium<\/em>. The second stage involved drying zinc hydroxide to create ZnO-NPs. Figure (4).<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 4: Zinc nanoparticle biosynthesis A: After incubation,<\/strong> the <\/strong>cell-free extract <\/strong>was incubated <\/strong>with zinc acetate B: Nanoparticle sedimentation C: Drying of zinc oxide nanoparticles.<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Characterization of ZnONPs<\/strong><\/strong><\/p>\n\n\n\n

UV\u2012Vis <\/strong>spectral analysis<\/strong><\/strong><\/p>\n\n\n\n

UV\u2012visible\nspectroscopy was utilized\nto measure the optical characteristics of the ZnONPs in the 200-800 nm\nrange. As the particle size decreases, the intensity of the absorption peak shifts (blueshifts) toward a lower wavelength. When ZnONPs\nare stimulated by UV light, their valence electrons show an absorption peak in\nthe 267 nm spectrum, indicating a characteristic band for pure ZnO. Figure (5).<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 5: UV\u2012visible absorption <\/strong>spectrum of <\/strong>the synthesized <\/strong>ZnO NPs<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Atomic force microscopy (AFM) analysis<\/strong><\/strong><\/p>\n\n\n\n

We can learn more about the topography and\nroughness of nanoparticles through AFM\ninvestigations. The AFM 3D\nimage shown in Figure (6) shows the smooth surfaces of different types and sizes of nanoparticles. Round and triangular\nartificial nanoparticles are produced<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 6: <\/strong>2D AFM image of<\/strong> ZnO NPs <\/strong>biosynthesized <\/strong>by S. mutans<\/em><\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Field emission <\/strong>scanning electron microscopy<\/strong> (FESEM)<\/strong><\/strong><\/p>\n\n\n\n

SEM was used\nto analyse the morphological characteristics of the biosynthesized ZnO-NPs.\nFigure 11. Samples subjected to two separate magnifications during\nscanning. The as-prepared ZnO-NPs were found to have distinct architectures and\nrough surfaces based on the scanned samples. Moreover, the number of aggregated particles was greater. Overall, tiny ZnO-NPs were effectively created by the metabolic filtrated extract of E.\nfaecium.<\/em><\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 7: SEM <\/strong>images<\/strong> of ZnO NPs<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Energy <\/strong>dispersive<\/strong> X-ray (EDX)<\/strong> spectroscopy<\/strong><\/strong><\/p>\n\n\n\n

Energy dispersive X-ray analysis (EDX) was\nused for analysis. Fig. 8 shows the presence of zinc and oxygen in the ZnO-NPs. Moreover, other components, such as nitrogen, carbon, phosphorus, and sulfur, are predominantly attributed to the metabolic filtrated extract of E. faecium<\/em>.\n \n<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 8: EDX analysis of ZnO-NPs<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

X-ray diffraction (XRD):<\/strong><\/p>\n\n\n\n

XRD is a powerful technique that provides information about the structure, average size and crystalline nature of a sample. Figure (9) shows the XRD pattern of the ZnO NPs synthesized using E. faecium<\/em>.<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 9: XRD analysis of synergistic ZnO NPs.<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Antibacterial activity of ZnONPs<\/strong><\/p>\n\n\n\n

According to the MIC results and the diameters of the zones of inhibition observed in Figure 14, the ZnO nanoparticles had significant antimicrobial activity against P. mmirabilis <\/em>bacteria isolated from urine and catheter urine. Further evidence of a statistically significant difference (p < 0.05) in the disseminated mean zone of bacterial inhibition following treatment with varying concentrations of ZnONPs (1000, 500, 250, 125, and 62.5 \u03bcg\/mL) is shown in Fig. 10. The statistical analysis revealed a significant difference (p < 0.05) in the mean zone of bacterial inhibition after treatment with 1000 \u00b5g\/mL ZnNPs. There were significant differences between the P. mmirabilis<\/em> isolations.<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 10: Mean (\u00b1 SD) <\/strong>zone<\/strong> of <\/strong>bacterial inhibition<\/strong> in mm <\/strong>after treatment with different concentrations of ZnONPs (<\/strong>1000, 500, 250, 125, and 62.<\/strong>5 \u03bcg<\/strong>\/mL<\/strong>)<\/strong> against P. mmirabilis <\/em><\/strong>standard deviation<\/strong> (n = 3).<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Minimum inhibitory concentration of ZnO <\/strong>NPs<\/strong><\/strong><\/p>\n\n\n\n

The MICs of ZnO NPs were determined for <\/em>P.<\/em> <\/em>mirabilis<\/em> isolates (P.m2, P.m3, P.m4, P.m5, P.m6, P.m7 and P.m8). Serial dilutions of each nanoparticle (1000, 500, 250, 125 and 64 \u00b5g\/ml) were introduced into the bacterial broth tube. The different MIC values were as follows: ZnO NPs had a significant effect on\nbacterial cell viability and resulted in 100% viability at 1000 \u00b5g\/ml, while the MIC of ZnO NPs was 250 \u00b5g\/ml for\nthe seven isolates. The sub-MIC of the ZnO NPs was 125 \u00b5g\/ml. The sub-MIC of each nanoparticle was used to determine the inhibitory effect on swarming motility<\/p>\n\n\n\n

Effect of ZnO NPs on rsbA<\/em> gene\nexpression<\/strong><\/p>\n\n\n\n

  Real-time PCR was used to determine changes in rsbA<\/em> gene expression after exposure to ZnO NPs at sub-MICs (250 \u00b5g\/ml). The expression of the RsbA gene was significantly downregulated in the M8 isolate, while the expression of the RsbA gene was upregulated in the M3 isolate. Several studies have confirmed the decreased folding of rsbA<\/em> after exposure to ZnO NPs and other nanoparticles. studied the impact of zinc oxide and silver nanoparticles on the expression of the rsbA genes involved in the swarming phenomenon in P. mirabilis<\/em> and discovered a decrease in gene expression for isolates after treatment compared to pretreatment gene expression. Figure 11 shows that the expression of the rsbA <\/em>gene was significantly (p<\/em> <0.01) downregulated after bacterial CuO-ZnO NP treatment compared with that in the control (no treatment). This study may be the first to investigate the possible impact of ZnO NPs on these genes, even though no research has investigated how ZnO NPs affect the expression of the rsbA<\/em> gene in P. mirabilis<\/em>. It should be noted, however, that other nanoparticles were used to target genes related to the regulation of quorum sensing in this species.<\/p>\n\n\n\n\n\n
\"\"<\/td>\n\n

Figure 11<\/strong>: Mean \u00b1 SD of <\/strong>the <\/strong>fold change in <\/strong>the <\/strong>gene expression of rsbA<\/em> before and after treatment with ZnO NPs compared with <\/strong>that in <\/strong>untreated cells<\/strong> (n <\/em>=3)<\/strong>.<\/strong><\/p>\n

<\/p>\n

Click here to view Figure<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Discussion<\/strong><\/strong><\/p>\n\n\n\n

Using the VITEK 2 system, seventy isolates of P.\nmirabilis <\/em>were discovered in addition to swarming on blood agar and forming\ncolonies on MacConkey agar. One\nfeature of P.<\/em> <\/em>mirabilis<\/em> that is\neasily noticeable on firm agar surfaces is the bull’s-eye pattern. Proteus mirabilis<\/em>, a human\nopportunistic pathogen, and other\nhighly resistant bacteria concurred with these results(38)<\/sup>. Various\nbiochemical tests were conducted on P.<\/em> <\/em>mirabilis<\/em> isolates\nand showed positive results for catalase, urease, and methyl red and motility tests and\nnegative results for indole oxidase tests. These results are similar to (39)<\/sup>. The results of this study are\nconsistent with studies confirming that P. mirabilis<\/em> possesses\nbull’s-eye swarming motility that enables bacteria to rapidly migrate through\nall types of catheters through their numerous flagella and easily spread the\ninfection to other parts of the urinary system(40)<\/sup>. The antibacterial activity of the\nBLIS suspension was studied using the disk diffusion method to distinguish\nisolates that possess the ability to produce the inhibitor. According to a different\nstudy, the filter paper disk test has numerous benefits over alternative\ntechniques, including simplicity, affordability, the capacity to test a large\nnumber of bacteria and antimicrobial compounds, and ease of interpreting the\nresults. (41)<\/sup>. The generation of a\nlight yellow to white precipitate served as an indicator of nanoparticle production.\nFollowing centrifugation, the precipitate turned white and was collected as\na white powder after being microwave-dried. In recent years, bacteria have been used to create\nnanomaterials with exceptional properties, primarily gold, silver, and zinc\nnanoparticles, for the creation of antimicrobials with in vitro activity\nagainst harmful bacteria(42)<\/sup>. UV spectroscopy was used to verify the biogenesis of the ZnO NPs. The\ngeneration of freshly generated ZnO NPs with a maximum peak at 267 nm was\nconfirmed by the results. This is in\nline with research showing that ZnO NPs have a restricted distribution of sizes\nbecause they are nanoscale particles,\nwhich causes a sharp absorption peak to be visible. Because zinc oxide nanoparticles\nabsorb light well in the 200\u2013400 nm UV range, they are appropriate for use in\nmedical applications(43)<\/sup>. In this study, AFM analysis of\nZnO NPs was performed using scanning microscopy (CSPM) to identify and\ncharacterize the nanoparticle distributions. The estimated grain size and\naverage square roughness were determined. Microbial synthesis of ZnO\nnanoparticles can produce products with different sizes, shapes, activities and\nbehaviors. These differences can be\nattributed to the synthesis pathway, enzymes used by the microorganisms,\ntemperature, and other biological factors(44)<\/sup>. Compared with chemical methods,\nthe size of biosynthesized zinc oxide NPs can be larger(45)<\/sup>. To determine the morphology,\nsize, and elemental and structural content of the NP samples, FESEM\nanalysis was carried out. FESEM\nimages from a previous study revealed that\nthey were essentially spherical and uniform in appearance with a diameter of 15\nto 19 nanometers. Compared to EDX, FESEM allows the determination of the\npresence of different components in the examined model(46)<\/sup>. The XRD patterns showed clear peaks that matched the diffraction peaks at 20 Hz, confirming the generation of\nZnO NPs. The composite material was in the\nnanoscale range, as indicated by the broadening of the diffraction peak line (47)<\/sup>. The MIC of ZnO NPs in this study was 250 \u00b5g\/ml. The sub-MIC of ZnO NPs was 125\n\u00b5g\/ml. The sub-MIC of each\nnanoparticle was used to determine its inhibitory\nimpact on motility during swarming. Numerous studies have documented the anti-biofilm activity of zinc oxide NPs; one\nstudy revealed that treating Pseudomonas\naeruginosa<\/em> bacteria with zinc oxide NPs\nsignificantly reduced the ability of bacteria to produce\nbiofilms(48)<\/sup>. Compared with other metal nanoparticles,\nnanoparticles exhibit enhanced properties that improve their\nactivity, such as a larger surface area, smaller band\ngap, smaller particle size, and greater stability, according to recent research\non this topic(49)<\/sup>. Real-time PCR technology was\nused to determine changes in rsbA<\/em> gene expression after exposure to ZnO\nNPs at Sub-MIC level (125 \u03bcg\/ml).  The\nresults of this study are consistent with research that confirmed that PCR\ntechnique showed a decrease in the gene expression of  gene rsbA<\/em> in the presence of the\nnanoinhibitor material, which is zinc oxide nanoparticles ZnONPs and silver\nnanoparticles AgN.(50)<\/sup>. Bacteria use a variety of efflux\nmechanisms to extrude metal ions beyond cellular boundaries, thus blocking\ntheir entry. It has been observed that the exposure of therapeutically\nrelevant bacteria to NPs leads to the upregulation of genes encoding\nefflux pumps. (51)<\/sup> <\/sup>Reducing the harmful consequences\nof synthetic processes, the chemicals they include, and the complexes they\nproduce is the main objective. One useful strategy in green nanotechnology is\nthe creation of nanoparticles using different biomaterials. Moreover, utilizing\nnature’s biological attributes in a range of ways is a great strategy. During\nthe past several years, many materials, such as\nalgae, plants, bacteria, and fungi, have been\nutilized to create nontoxic, low-cost, and energy-efficient\nmetallic nanoparticles. (52)<\/sup><\/sup><\/p>\n\n\n\n

Conclusion<\/strong><\/p>\n\n\n\n

Over the past few decades, numerous attempts have been made to develop\nrevolutionary green synthesis techniques. The production of nanomaterials by\nliving organisms holds great promise\nfor application in a variety of fields, including healthcare. Proteus spp. are only a few of the bacterial\ngenera that exhibit the swarming phenomenon and are recognized as having significant pathogenicity. Such\nbacterial infections caused by\nswarming germs might be treated. The higher\nincidence of Proteus species and virulence factors in the present study could be\ncaused by variations in the sanitary methods used. In P. mirabilis<\/em>\ntreated with ZnO-NPs, the expression of the rsbA<\/em>\ngene was dramatically downregulated, whereas ZnO-NPs had no discernible\ninfluence on rsbA<\/em> gene expression. These results imply that by\ncontrolling P. mirabilis<\/em> gene expression, ZnO-NPs may be used as antimicrobial agents.<\/p>\n\n\n\n

Acknowledgement<\/strong><\/p>\n\n\n\n

None<\/p>\n\n\n\n

Conflict of Interest<\/strong><\/p>\n\n\n\n

There is no conflict of interest<\/p>\n\n\n\n

Funding source<\/strong><\/p>\n\n\n\n

There are no funding source.<\/p>\n\n\n\n

References<\/strong><\/p>\n\n\n\n

  1. Al-Mijalli, S.H.S., Shami, A.Y., Al-Salem, R.A. and Alnafisi, N.M . Development of Diagnostic Capabilities for Complications of Bacterial Infection in Diabetic Patients. Review of Diabetic Studies  2022 ; 18(2), pp.135-139.
    CrossRef<\/a><\/li>
  2. Al Otraqchi, K.I.B., Darogha, S.N. and Ali, B.A. Serum levels of immunoglobulin and complement in UTI of patients caused by Proteus mirabilis<\/em> and using AgNPs as antiserum. Cellular and Molecular Biology  2021 ; 67(3), pp.11-23.
     CrossRef <\/a><\/li>
  3. De Freitas, C. D . Characterization of swarm-colony development reveals the release of a distinct cell type facilitating dissemination of Vibrio parahaemolyticus (Doctoral dissertation, Philipps-Universit\u00e4t Marburg) 2019.
     CrossRef <\/a><\/li>
  4. Abdullah, P.B., Khalid, H.M. and Mero, W.M. Molecular characterization and antibiotic susceptibility of Proteus mirabilis<\/em> isolated from different clinical specimens in Zakho city, Kurdistan Region, Iraq. Zanco Journal of Pure and Applied Sciences  2022 ; 34(5), pp.198-207.
     CrossRef <\/a><\/li>
  5. Cortes-L\u00f3pez, H., Ju\u00e1rez-Rodr\u00edguez, M., Garc\u00eda-Contreras, R., Soto- Hern\u00e1ndez, M. and Castillo-Ju\u00e1rez, I. Old Acquaintances in a New Role: Regulation of Bacterial Communication Systems by Fatty Acids. Trends in Quorum Sensing and Quorum Quenching  2020 ; pp.47-57.
     CrossRef <\/a><\/li>
  6. Shaba, E.Y.; Jacob, J.O.; Tijani, J.O.; Suleiman, M.A.T. A Critical Review of Synthesis Parameters Affecting the Properties of Zinc Oxide Nanoparticle and Its Application in Wastewater Treatment. Appl. Water Sci  2021 ;  11, 48. [Google Scholar]
    CrossRef <\/a><\/li>
  7. Singh, T.A.; Sharma, A.; Tejwan, N.; Ghosh, N.; Das, J.; Sil, P.C. A State of the Art Review on the Synthesis, Antibacterial, Antioxidant, Antidiabetic and Tissue Regeneration Activities of Zinc Oxide Nanoparticles. Adv. Colloid Interface Sci  2021 ; 295, 102495. [Google Scholar]
    CrossRef<\/a><\/li>
  8. I. J. Abed , M. E. Ahmed and  S. MH AL-Shimmary . “Rosemary Volatile Oil As A Preservative Agent In Some Canned Meat Foods.” Iraqi Journal Of Agricultural Sciences  2021;  52(155-162).  
    CrossRef <\/a><\/li>
  9. Ahmed, M. E., & al-awadi, a. Q. Enterococcus faecium bacteriocin efflux pump mexa gene and promote skin wound healing in mice. Journal of microbiology, biotechnology and food sciences  2024 ; e10711-e10711.
     CrossRef <\/a>\u200f<\/li>
  10. Ahmed M.E., Al-Awadi A.Q., Abbas A.F. Focus of Synergistic Bacteriocin-Nanoparticles Enhancing Antimicrobial Activity Assay. Microbiological journal 2023;  (6). P. 95\u2014104. https:\/\/doi.org\/10.15407\/ microbiolj85.06.095.
     CrossRef <\/a><\/li>
  11. Mais E. Ahmed, Khadija Salama. A Comparison Of The Effects Of Lemon Peel -Silver Nanoparticles Versus Brand Toothpastes And Mouthwashes On Staphylococcus spp. Isolated From Teeth Caries. Iraqi Journal Of Science 2020 ; Vol. 61, No. 8, Pp: 1894-1901. Doi: 10.24996\/Ijs.2020.61.8.6
    CrossRef <\/a><\/li>
  12. Agnieszka, K.-R.; Jesionowski, T. Zinc Oxide\u2014From Synthesis to Application: A Review. Materials  2014;  7, 2833\u20132881. [Google Scholar]
     CrossRef <\/a><\/li>
  13. Sirelkhatim, A.; Mahmud, S.; Seeni, A.; Kaus, N.H.M.; Ann, L.C.; Bakhori, S.K.M.; Hasan, H.; Mohamad, D. Review on Zinc Oxide Nanoparticles: Antibacterial Activity and Toxicity Mechanism. Nano-Micro Lett  2015 ; 7, 219\u2013242. [Google Scholar] [CrossRef][Green Version]
     CrossRef <\/a><\/li>
  14. Faiq, N. H., and Ahmed, M., E . Effect of Biosynthesized Zinc oxide Nanoparticles on Phenotypic and Genotypic Biofilm Formation of Proteus mirabilis<\/em>. Published Online First  2023;  https:\/\/doi.org\/10.21123\/bsj.2023.8067
     CrossRef <\/a><\/li>
  15. Ahmed, M. E., Q Al-lam, M., & Abd Ali, D. D. M. Evaluation of antimicrobial activity of plants extract against bacterial pathogens isolated from urinary tract infection among males patients. Al-Anbar Medical Journal  2021 ;  17(1), 20-24.
     CrossRef <\/a>\u200f<\/li>
  16. Sayal, R.A., Alkharasani, N.M., Alsadawi, A.A. and Alquraishi, Z.H.O. Molecular study of biofilm and some antibiotic resistance gene in Proteus mirabilis<\/em> isolated from children with UTI patients in Al-najaf Governorate. Journal of Pharmaceutical Sciences and Research  2018 ; 10(8), pp.1986-1990. <\/li>
  17. Hamed, S.M.; Abushanab, K.M.; Elkhatib, W.F. and Ashour, M.SAminoglycoside resistance patterns of certain gram-negative uropathogens recovered from hospitalized Egyptian patients. British Microbiology Research Journal   2013 ;  3(4): 678.
     CrossRef <\/a><\/li>
  18. Kathleen Cusick, Yi-Ying Lee,, Brian Youchak and Robert Belas . Perturbation of FliL Interferes with Proteus mirabilis<\/em> Swarmer Cell Gene Expression and Differentiation . Journal of Bacteriology  2011;  p. 437\u2013 447
    CrossRef <\/a><\/li>
  19. Tahreer Hadi Saleh , Saba Talib Hashim , Salma Nassrullah Malik , Bahaa Abdullah Laftaah ALRubaii . Down-Regulation of fliL Gene Expression by Ag Nanoparticles and TiO2 Nanoparticles in Pragmatic Clinical Isolates of Proteus mirabilis and Proteus vulgaris from Urinary Tract Infection. Nano Biomed. Eng 2019 ; Vol. 11, Iss. 4
     CrossRef <\/a><\/li>
  20. Karpal Singh and Sira Owibingire. Occurrence of Dental Caries among the Adults Attending a Regional Referral Hospital in Tanzania, ournal of Orofacial Research  2014 ;  4(1):30-34
     CrossRef <\/a><\/li>
  21. Mais E. Ahmed, Issra S. Mousa, Mohammad M.F Al-Halbosiy and  Entsar J. Saheb . Anti-Leishmaniasis Activity of Purified Bacteriocin Staphylococci and Pyocin Isolated from Staphylococcus aureus<\/em> and Pseudomonas aeruginosa<\/em> Iraqi Journal of Science  2018;  Vol. 59, No.2A, pp: 645-653. DOI:10.24996\/ijs.2018.59.2A.2
     CrossRef <\/a><\/li>
  22. Ahmed, M.E.; Ahmed, Z.M.; Thamer, A. The Evolutionary Effects Of Bacillin And S-Pyocin Bacteriocin And Their Effects On Propionibacterium Acnes And Fungi. Biochem. Cell. Arch  2022;  20, Supplement 2, pp. 3645-3649<\/li>
  23. Balouiri, M., Sadiki, M. and Ibnsouda, S. K. Methods for in vitro evaluating antimicrobial activity: a review. Journal of pharmaceutical analysis  2016 ;  6, 71-79
     CrossRef <\/a><\/li>
  24. Bradford, M.M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Analytical biochemistry  1976 ;  72(1-2), pp.248-254.
     CrossRef <\/a><\/li>
  25. Ahmed, Mais Emad; Naser, Wasan; Hassoon, Hassanain Abbood The Study Of The Efficacy Of Bacteriocin Isolated From The Genus Salmonella And Its Role In Treating Basra Water Pollution. Samarra Journal Of Pure And Applied Science  2022 ;  4.3: 79-88.\u200f<\/li>
  26. Muunim, H.H., Al-Mossawei, M.T.and Emad.ahmed, M. The comparative study among the MRSAcin, nisin a and vancomycin, on biofilm formation by methicillin resistance staphylococcus aureus isolated from food sources. International Journal of Drug Delivery Technology  2019 ; 9 (3), pp. 176-181.  Doi: 10.25258\/ijddt.9.3.31
     CrossRef <\/a><\/li>
  27. Koutu, V., Shastri, L. and Malik, M. M. Effect of NaOH concentration on optical properties of zinc oxide nanoparticles. Materials Science-Poland  2016; 34(4): 819-827.
    CrossRef <\/a><\/li>
  28. Mohammed LS, Ahmed ME .Effects of ZnO NPS on Streptococcuspyogenes <\/em>in vivo, Ann Trop Med & Public Health  2020;  23(IIb): S452. DOI: https:\/\/DOI:10.36295\/ASRO.2020.23228
     CrossRef <\/a><\/li>
  29. Ren, S., Yuan, X., Liu, F., Fang, F., Iqbal, H. M., Zahran, S. A. and Bilal, M. Bacteriocin from lacticaseibacillus rhamnosus sp. A5: isolation, purification, characterization, and antibacterial evaluation for sustainable food processing. Sustainability  2022; 14, 9571,
     CrossRef <\/a><\/li>
  30. Noor, Faiq and Mais, Ahmed. Inhibitory Effects of Biosynthesized Copper Nanoparticles on Biofilm Formation of Proteus mirabilis<\/em> Iraqi Journal of Science, 2024, Vol. 65, No.1, pp: 65-78.
     CrossRef <\/a><\/li>
  31. Seddiq,S. Zyara,A.M., & Ahmed, M. E. Evaluation the Antimicrobial Action of Kiwifruit Zinc Oxide Nanoparticles Against Staphylococcus aureus<\/em> Isolated from Cosmetics Tools. BioNanoScience  2023;1-10  https:\/\/doi.org\/10.1007\/s12668-023-01142-
     CrossRef <\/a><\/li>
  32. Mohammed LS, Ahmed ME .Effects of ZnO NPS on Streptococcuspyogenes in vivo, Ann Trop Med & Public Health   2020;  23(IIb): S452. DOI: https:\/\/DOI:10.36295\/ASRO.2020.23228
     CrossRef <\/a><\/li>
  33. Erci F, Cakir-Koc R, Yontem M, Torlak E., “Synthesis of biologically active copper oxide nanoparticles as promising novel antibacterial- antibiofilm agents.,” Preparative Biochemistry & Biotechnology., vol. 50, no. 6, pp. 538-548,2020
     CrossRef <\/a><\/li>
  34. Thangeeswari, T. George, A. T. and Kumar, A. A. Optical properties and FTIR studies of cobalt doped ZnO nanoparticles by simple solution method. Indian Journal of Science and Technology 2016 ; 9(1)
     CrossRef <\/a><\/li>
  35. Diearamane, S.; Lim, Y.; Wong, L.; Lee, PF. Cytotoxic effects of zinc oxide nanoparticles on cyanobacterium Spirulina (Arthrospira) platensis  2018 ; Peer 6, e4682
     CrossRef <\/a><\/li>
  36. Soliman M K Y, Abu-Elghait M, Salem S S and Azab M S. Multifunctional properties of silver and gold nanoparticles synthesis by Fusarium pseudonygamai. Springer link  2022.
    CrossRef <\/a><\/li>
  37. Gudi\u00f1a, E.J., Rocha, V., Teixeira, J.A. and Rodrigues, L.R. Antimicrobial and antiadhesive properties of a biosurfactant isolated from Lactobacillus paracasei ssp paracasei A20. Letters in applied microbiology  2010; 50(4), pp.419-424.
     CrossRef <\/a><\/li>
  38. Titus, D., Samuel, E.J.J. and Roopan, S.M., Nanoparticle characterization techniques. In Green synthesis, characterization, and applications of nanoparticles  2019; pp. 303-319. Elsevier
     CrossRef <\/a><\/li>
  39. Caron. F. Antimicrobial susceptibility testing: a four facets tool for the Clinician. Journal of anti-infection  201214;  168-174 . <\/li>
  40. Durgadevi, R., Kaleeshwari, R., Swetha, T.K., Alexpandi, R., Pandian, S.K. and Ravi, A.V. Attenuation of Proteus mirabilis<\/em> colonization and swarming motility on indwelling urinary catheter by antibiofilm impregnation: an in vitro study. Colloids and Surfaces B: Biointerfaces, 2020; 194, p.111207.
    CrossRef <\/a><\/li>
  41. Caron, F. Antimicrobial susceptibility testing: a four facets tool for the clinician. Journal des anti-infectieux   2012; 14, 168-174.
     CrossRef <\/a><\/li>
  42. Grasso, G., Zane, D. and Dragone, R. Microbial nanotechnology: challenges and prospects for green biocatalytic synthesis of nanoscale materials for sensoristic and biomedical applications. Nanomaterials   2019;  10(1), p.11.
    CrossRef <\/a><\/li>
  43. Little, K., Austerman, J., Zheng, J. and Gibbs, K.A. Cell shape and population migration are distinct steps of Proteus mirabilis<\/em> swarming that are decoupled on high-percentage agar. Journal of bacteriology  2019;  201(11), pp. e00726-18.
     CrossRef <\/a><\/li>
  44. Mohd Yusof, H., Mohamad, R., Zaidan, U.H. and Abdul Rahman, N. A . Microbial synthesis of zinc oxide nanoparticles and their potential application as an antimicrobial agent and a feed supplement in animal industry: a review. Journal of animal science and biotechnology  2019; 10, pp.1-22
     CrossRef <\/a><\/li>
  45. Song, Y., Jiang, M., Zhang, H. and Li, R . Zinc oxide nanoparticles alleviate chilling stress in rice (Oryza Sativa L.) by regulating antioxidative system and chilling response transcription factors. Molecules  2021 ; 26(8), p.2196.
     CrossRef <\/a><\/li>
  46. AL-Asady, Z.M., AL-Hamdani, A.H. and Hussein, M.A .Study the optical and morphology properties of zinc oxide nanoparticles. In AIP Conference Proceedings  2020;  (Vol. 2213, No. 1, p. 020061). AIP Publishing LLC.
     CrossRef <\/a><\/li>
  47. Osuntokun, J., Onwudiwe, D.C. and Ebenso, E.E. Green synthesis of ZnO nanoparticles using aqueous Brassica oleracea<\/em> L. var. italica and the photocatalytic activity. Green chemistry letters and reviews  2019; 12(4), pp.444-457.
     CrossRef <\/a><\/li>
  48. Abdelraheem, W.M. and Mohamed, E.S. The effect of zinc oxide nanoparticles on Pseudomonas aeruginosa<\/em> biofilm formation and virulence genes expression. The Journal of Infection in Developing Countries  2021; 15(06), pp.826-832.
     CrossRef <\/a><\/li>
  49. Zhao Vo, N.L.U., Van Nguyen, T.T., Nguyen, T., Nguyen, P.A., Nguyen, V.M., Nguyen, N.H., Tran, V.L., Phan, N.A. and Huynh, \u039a.\u03a1.\u0397.  Antibacterial shoe insole-coated CuO-ZnO nanocomposite synthesized by the sol-gel technique. Journal of Nanomaterials  2020;  pp.1-13.
     CrossRef <\/a><\/li>
  50. Ibraheem M. AL-Dulaimy, Hadi R. Rasheed Al-Taai, & Ali Jaffar Saleem. Effect of Silver and Zinc Oxide Nanoparticles on Gene Expression of Some Swarming Genes in Proteus Mirabilis. Central Asian Journal of Medical and Natural Science,  2023 ; 4(3), 11-20.<\/li>
  51. Hetta, H.F., Ramadan, Y.N., Al-Harbi, A.I., A. Ahmed, E., Battah, B., Abd Ellah, N.H., Zanetti, S. and Donadu, M.G. Nanotechnology as a Promising Approach to Combat Multidrug Resistant Bacteria: A Comprehensive Review and Future Perspectives. Biomedicines  2023 ; 11(2), p.413.
     CrossRef <\/a><\/li>
  52. CHOPRA, Hitesh, et al. Green metallic nanoparticles: biosynthesis to applications. Frontiers in Bioengineering and Biotechnology  2022 ;  10: 548.
     CrossRef <\/a><\/li><\/ol>\n","protected":false},"excerpt":{"rendered":"

    Introduction Proteus mirabilis is rod-shaped motile bacterium  that belongs to […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-58176","post","type-post","status-publish","format-standard","hentry","category-vol17no2"],"_links":{"self":[{"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/posts\/58176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/comments?post=58176"}],"version-history":[{"count":5,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/posts\/58176\/revisions"}],"predecessor-version":[{"id":59678,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/posts\/58176\/revisions\/59678"}],"wp:attachment":[{"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/media?parent=58176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/categories?post=58176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biomedpharmajournal.org\/staging\/wp-json\/wp\/v2\/tags?post=58176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}