scholarly journals Efficacy of Ethanolic Extract of Syzygium aromaticum in the Treatment of Multidrug-Resistant Pseudomonas aeruginosa Clinical Isolates Associated with Urinary Tract Infections

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Osama Ahmed ◽  
Hassan Mohamed ◽  
Wesam Salem ◽  
Magdy Afifi ◽  
Yuanda Song
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Ethanolic Extract ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Gas Chromatography Mass Spectrometry ◽  
Syzygium Aromaticum ◽  
Medicinal Plant Extracts ◽  
Tract Infections

Pseudomonas aeruginosa is an organism commonly found in the environment and one of the most common causes of human urinary tract infections in developed and developing countries. The present study aimed to investigate the effect of five medicinal plant extracts on the isolated drug-resistant P. aeruginosa clinical isolates. A total of 100 urine samples were collected from Nagaa Hammadi and Qena General Hospitals and private medical analysis laboratories in Qena governorate, Upper Egypt. Samples were screened for the prevalence of UTI pathogens by biochemical tests, antibiotics sensitivity, detection of virulence, and antibiotic-resistant genes by using multiplex PCR. P. aeruginosa is by far the subdominant causative agent with a percentage of 14%. Clinical isolates were multidrug-resistant, containing blaTEM, blaSHV, toxA, lasB, pslA, and fliC resistant and virulence genes. Based on bioactivity, the ethanolic extract of clove (Syzygium aromaticum) was the most active extract among tested medicinal plants and had the maximum zone of inhibition sized 23 mm against tested bacteria. The results of the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) showed a high decrease of inhibition within a concentration range of (10 to 121.25 mg/mL and 20 to 30 mg/mL, respectively). Further, major compounds of oleic acid (27.22%), guanosine (8.91%), indole (6.83%), 1-eicosene (6.30%), and cis-10-nonadecenoic acid (5.37%) were determined among 12 bioactive compounds in the ethanolic extract of S. aromaticum using gas chromatography-mass spectrometry (GC-MS). These results indicated that the ethanolic extract of S. aromaticum is a promising antibacterial agent for further studies aiming to control bacterial infections including MDR bacteria and develop novel therapeutic alternatives for the treatment of UTI.

scholarly journals Quorum sensing and virulence of Pseudomonas aeruginosa during urinary tract infections

2012 ◽  
Vol 6 (06) ◽  
pp. 501-507 ◽  
Author(s):  
Sezgi Senturk ◽  
Seyhan Ulusoy ◽  
Gulgun Bosgelmez-Tinaz ◽  
Aysegul Yagci
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Urinary Tract ◽  
Quorum Sensing ◽  
Virulence Factors ◽  
Urinary Tract Infections ◽  
Clinical Isolates ◽  
Pcr Analysis ◽  
Signal Molecules ◽  
Tract Infections

Introduction: In the opportunistic pathogen Pseudomonas aeruginosa, the production of several virulence factors depends on quorum sensing (QS) involving N-acylhomoserine lactone signal molecules. In vitro studies have suggested that the QS system is crucial in the pathogenesis of P. aeruginosa. However, it is unclear whether QS systems of P. aeruginosa play the same role during infections. Methodology:  In this study, to explore the contribution of QS systems to the pathogenesis of P. aeruginosa during urinary tract infections, we collected 82 clinical isolates. Detection of N-acyl-homoserine lactones (C12-HSL and C4-HSL) was performed on agar plates employing biosensor strains C. violaceum. Elastase and biofilm production were determined spectrophotometrically. QS genes were detected by PCR and subsequently underwent sequencing. Results and conclusion:  Six isolates were found to be negative in the production of both C12-HSL and C4-HSL and all virulence factors tested.  PCR analysis of these isolates revealed that four isolates contained all four QS genes while one isolate was negative for lasR gene, and one isolate negative for lasI, lasR and rhlR genes. Sequence analyses of these isolates showed that the lasR, lasI, rhlR and rhlI genes had point mutations. The combination of these mutations probably explains their C12-HSL, C4-HSL and virulence factor deficiencies. Results of this study suggest that QS deficient clinical isolates occur and are still capable of causing clinical infections in humans. 

scholarly journals Fecal Microbiota Transfer for Multidrug-Resistant Gram-Negatives: A Clinical Success Combined With Microbiological Failure

2017 ◽  
Vol 4 (2) ◽  
Author(s):  
Janneke E. Stalenhoef ◽  
Elisabeth M. Terveer ◽  
Cornelis W. Knetsch ◽  
Peter J. van‘t Hof ◽  
Imro N. Vlasveld ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Clinical Success ◽  
Multidrug Resistant ◽  
Fecal Microbiota ◽  
Intestinal Colonization ◽  
Tract Infections ◽  
Microbiota Diversity

Abstract Combined fecal microbiota transfer and antibiotic treatment prevented recurrences of urinary tract infections with multidrug-resistant (MDR) Pseudomonas aeruginosa, but it failed to eradicate intestinal colonization with MDR Escherichia coli. Based on microbiota analysis, failure was not associated with distinct diminished microbiota diversity.

scholarly journals Relationship between the Presence of the nalC Mutation and Multidrug Resistance inPseudomonas aeruginosa

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Nourkhoda Sadeghifard ◽  
Azar Valizadeh ◽  
Mohammad Reza Zolfaghary ◽  
Mohammad Hossien Maleki ◽  
Abbas Maleki ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Multidrug Resistance ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Clinical Isolates ◽  
Efflux System ◽  
Tract Infections ◽  
The Relationship

Objectives. The current study was conducted to determine the relationship between the presences of significant multidrug resistance inPseudomonas aeruginosa(P. aeruginosa) having intactmexRgenes (nalC) to different antibiotics.Methods. In order to identify nalC, fifty strains ofP. aeruginosawere obtained. All isolates were found in urinary tract infections. They were evaluated against different antibiotics. The nalC mutant was identified by PCR.Results. The 50 clinical isolates ofP. aeruginosaoriginated from two hospitals in Iran, in which 32 isolates were found in Milad hospital, and 18 isolates were collected in the Ilam Hospital. The results in Milad hospital of nalC revealed that allP. aeruginosaresistant to oxacillin showed the presence of nalC. In Ilam hospital only three (16.6%) isolates were resistant to oxacilin and aztreonam, and among these three isolates only one isolate revealed resistance to ceftazidime and amikacin. The resistant isolates showed the presence of both OXA-10 and nalC.Conclusion. Our results showed that the presence of nalC was observed amongP. aeruginosaresistance to oxacilin. Thus, the finding suggested relationship between oxacilin resistance and presence of nalC and consequently overproduction of the MexABOprM efflux system.

scholarly journals Susceptibility of Multidrug-Resistant and Biofilm-Forming Uropathogens to Mexican Oregano Essential Oil

Antibiotics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 186 ◽  
Author(s):  
Karen Arely Zapién-Chavarría ◽  
Alejandro Plascencia-Terrazas ◽  
María Georgina Venegas-Ortega ◽  
Mauricio Varillas-Torres ◽  
Blanca Estela Rivera-Chavira ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Antibiotic Resistance ◽  
Urinary Tract ◽  
Essential Oils ◽  
Urinary Tract Infections ◽  
Biofilm Formation ◽  
Antimicrobial Effect ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Tract Infections

Antibiotic resistance along with biofilm formation increases the difficulty for antibiotic therapy in urinary tract infections. Bioactive molecules derived from plants, such as those present in essential oils, can be used to treat bacterial infections. Oregano is one of the spices to have antimicrobial activity. Therefore, three Mexican oregano essential oils (two Lippia berlandieri Schauer and one Poliomintha longiflora) were tested for antimicrobial capacity against multidrug-resistant, biofilm-forming bacterial isolates. Clinical isolates from urinary tract infections were tested for antibiotic resistance. Multidrug-resistant isolates were evaluated for biofilm formation, and Mexican oregano antimicrobial effect was determined by the minimal inhibitory (CMI) and minimal bactericidal concentrations (CMB). The selected isolates were identified by molecular phylogenetic analysis. Sixty-one isolates were included in the study; twenty were characterized as multidrug-resistant and from those, six were strong biofilm formers. Three isolates were identified as Escherichia coli, two as Pseudomonas aeruginosa and one as Enterococcus faecalis based on the phylogenetic analysis of 16 S rRNA gene sequences. The antimicrobial effect was bactericidal; E. faecalis was the most susceptible (<200 mg/L CMI/CMB), and P. aeruginosa was the most resistant (>2,000 mg/L CMI/CMB). There was a range of 500-1000 mg/L (CMI/CMB) for the E. coli isolates. Mexican oregano essential oils demonstrated antimicrobial efficacy against multidrug-resistant clinical isolates.

Molecular Investigation of Multidrug-Resistant Escherichia coli Clinical Isolates from Patients with Urinary Tract Infections

2021 ◽  
Vol 24 (5) ◽  
pp. 636-645
Author(s):  
Mohamed M. Hassan ◽  
Rihab Lagha ◽  
Imed Mabrouk ◽  
Majid Alhomrani ◽  
Jamal A. Alorabi ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Molecular Investigation ◽  
Tract Infections

Detection of tox A gene in Pseudomonas aeruginosa that isolates from different clinical cases by using PCR.

2018 ◽  
pp. 26
Author(s):  
Rana M. Abdullah Al-Shwaikh ◽  
Abbas Falih Alornaaouti
Keyword(s):  
Molecular Weight ◽  
Pseudomonas Aeruginosa ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Otitis Media ◽  
Urinary Tract Infections ◽  
Gel Electrophoresis ◽  
Wound Infections ◽  
Tract Infections

       Current study obtained (75) isolate of Pseudomonas aeruginosa collected from different cases included : 28 isolates from otitis media, 23 isolates from burn infections, 10 isolates from wound infections, 8 isolates from urinary tract infections and 6 isolates from blood, during the period between 1/9/2014 to 1/11/2014        The result revealed that the tox A gene was present in 54 isolates (72%) of Pseudomonas aeruginosa. The gel electrophoresis showed that the molecular weight of tox A gene was 352 bp. The result shows 17 isolates (60.71%) from otitis media has tox A gene, 18 isolates (78.26%) from burn followed by 8 isolate (80%) from wound infection and 5 isolates (62.5%) from urinary tract infection , finally 6 isolates (100%) from blood have this gene.

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