Effects of copper sulfate, zinc oxide, and neoterramycin on weanling pig growth and antibiotic resistance rate for fecal escherichia coli

Background: The emergence of plasmid-mediated antibiotic resistance in Escherichia coli in water resources could pose a serious threat to public health. The study aims to investigate the dispersion of plasmid-mediated antibiotic-resistant E. coli from six rivers in Sarawak and two aquaculture farms in Borneo. Methods: A total of 74 water samples were collected for the determination of their bacteria colony count. An IMViC test identified 31 E. coli isolates and tested their susceptibility against twelve clinically important antibiotics. The extraction of plasmid DNA was done using alkali lysis SDS procedures. Characteristics, including plasmid copy number, molecular weight size, resistance rate and multiple antibiotic resistance (MAR), were assessed. Results: Our findings revealed that bacterial counts in rivers and aquaculture farms ranged from log 2.00 to 3.68 CFU/mL and log 1.70 to 5.48 cfu/mL, respectively. Resistance to piperacillin (100%) was observed in all E. coli; resistance to amoxicillin (100%) and ampicillin (100%) was observed in E. coli found in aquaculture farms; resistance to streptomycin (93%) was observed in E. coli found in rivers. All E. coli were resistant to ≥2 antibiotics and formed 26 MAR profiles, ranging from an index of 0.17 to 0.83, indicating that there are high risks of contamination. Some (48.4%) of the E. coli were detected with plasmids (1.2 to >10 kb), whereas 51.6% of the E. coli did not harbor any plasmids. The plasmid copy numbers reported were one plasmid (n = 7), two plasmids (n = 4), ≥ two plasmids (4). E. coli isolated from the Muara Tuang River showed the highest-molecular-weight plasmids. A statistical analysis revealed that there is no significant correlation (r = 0.21, p = 0.253) between the number of plasmids and the MAR index of the tested isolates. Conclusion: The distribution of MAR in E. coli from rivers is higher compared to the aquaculture environment. Our study suggests that MAR in isolates could be chromosome-mediated. Our results suggest that riverbed sediments could serve as reservoirs for MAR bacteria, including pathogens, under different climatic conditions, and their analysis could provide information for public health concerns.

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Antibiotic resistance pattern of Escherichia coli isolates from outpatients with urinary tract infections in Somalia

The Journal of Infection in Developing Countries ◽

10.3855/jidc.12189 ◽

2020 ◽

Vol 14 (03) ◽

pp. 284-289 ◽

Cited By ~ 1

Author(s):

Malyun Adam Mohamed ◽

Omar Abdifetah ◽

Fatima Abdullahi Hussein ◽

Sa’adia Abdullahi Karie

Keyword(s):

Escherichia Coli ◽

Antibiotic Resistance ◽

Urinary Tract ◽

Urinary Tract Infections ◽

Resistance Rate ◽

Resistance Pattern ◽

E Coli ◽

Antibiotic Resistance Pattern ◽

History Of ◽

Tract Infections

Introduction: Several studies suggest increasing rates of antibiotic resistance among adult populations with Urinary tract infections (UTI). Escherichia coli (E. coli), is the predominant bacterium both in the community and in hospital environments causing uropathogenic infections. This study aimed to estimate the common uropathogen bacteria that cause UTI among outpatients as well as to determine the antibiotic resistance pattern of E. coli isolates among outpatients with UTI infections at Shaafi hospital, Mogadishu, Somalia. Methodology: A cross-sectional study was conducted at Shaafi Hospital, Mogadishu, Somalia. A total of 128 samples were collected from outpatients suspected of UTI and tested through bacteriological investigations and antimicrobial susceptibility tests following the Kirby-Bauer agar disc diffusion method. Results: E. coli was isolated in 34 (41%) out of the total 83 samples that showed growth followed by Staphylococcus aureus 22 (26.5%), Pseudomonas aeruginosa, 13 (15.7%), Klebsiella pneumoniae 8 (9.6 %) and Proteus spp. 6 (7.2%). E. coli was highly sensitive to nitrofurantoin, 29 (85.3%), and ciprofloxacin (n = 23, 67.6%), and had the highest resistance rate of ceftriaxone, 33 (97.1%). The odds of having UTI were higher in patients with a history of UTI (Odds ratio OR = 0.211, 95% confidence interval CI: 0.080, 0.553) and history of antibiotic use (OR = 0.322, 95% CI: 0.113, 0.917). Increased resistance rate of E. coli against cephalosporins could be due to its excessive use as empirical therapy. Conclusion: The study indicates that outpatients with UTI could be at high risk of antibiotic resistance, suggesting regular surveillance and monitoring of antibiotics.

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Prevalence and Antibiotic Resistance Characteristics of Extraintestinal Pathogenic Escherichia coli among Healthy Chickens from Farms and Live Poultry Markets in China

Animals ◽

10.3390/ani11041112 ◽

2021 ◽

Vol 11 (4) ◽

pp. 1112

Author(s):

Ming Zou ◽

Ping-Ping Ma ◽

Wen-Shuang Liu ◽

Xiao Liang ◽

Xu-Yong Li ◽

...

Keyword(s):

Escherichia Coli ◽

Antibiotic Resistance ◽

Resistance Gene ◽

Genetic Relatedness ◽

Resistance Rate ◽

E Coli ◽

White Feather ◽

Pathogenic Escherichia Coli ◽

Live Poultry ◽

Live Poultry Markets

Chicken products and chickens with colibacillosis are often reported to be a suspected source of extraintestinal pathogenic Escherichia coli (ExPEC) causing several diseases in humans. Such pathogens in healthy chickens can also contaminate chicken carcasses at the slaughter and then are transmitted to humans via food supply; however, reports about the ExPEC in healthy chickens are still rare. In this study, we determined the prevalence and characteristics of ExPEC isolates in healthy chickens in China. A total of 926 E. coli isolates from seven layer farms (371 isolates), one white-feather broiler farm (78 isolates) and 17 live poultry markets (477 isolates from yellow-feather broilers) in 10 cities in China, were isolated and analyzed for antibiotic resistance phenotypes and genotypes. The molecular detection of ExPEC among these healthy chicken E. coli isolates was performed by PCRs, and the serogroups and antibiotic resistance characteristics of ExPEC were also analyzed. Pulsed-field gel electrophoresis (PFGE) and Multilocus sequence typing (MLST) were used to analyze the genetic relatedness of these ExPEC isolates. We found that the resistance rate for each of the 15 antimicrobials tested among E. coli from white-feather broilers was significantly higher than that from brown-egg layers and that from yellow-feather broilers in live poultry markets (p < 0.05). A total of 22 of the 926 E. coli isolates (2.4%) from healthy chickens were qualified as ExPEC, and the detection rate (7.7%, 6/78) of ExPEC among white-feather broilers was significantly higher than that (1.6%, 6/371) from brown-egg layers and that (2.1%, 10/477) from yellow-feather broilers (p < 0.05). PFGE and MLST analysis indicated that clonal dissemination of these ExPEC isolates was unlikely. Serogroup O78 was the most predominant type among the six serogroups identified in this study, and all the six serogroups had been frequently reported in human ExPEC isolates in many countries. All the 22 ExPEC isolates were multidrug-resistant (MDR) and the resistance rates to ampicillin (100%) and sulfamethoxazole-trimethoprim (100%) were the highest, followed by tetracycline (95.5%) and doxycycline (90.9%). blaCTX-M was found in 15 of the 22 ExPEC isolates including 10 harboring additional fosfomycin resistance gene fosA3. Notably, plasmid-borne colistin resistance gene mcr-1 was identified in six ExPEC isolates in this study. Worryingly, two ExPEC isolates were found to carry both mcr-1 and blaNDM, compromising both the efficacies of carbapenems and colistin. The presence of ExPEC isolates in healthy chickens, especially those carrying mcr-1 and/or blaNDM, is alarming and will pose a threat to the health of consumers. To our knowledge, this is the first report of mcr-1-positive ExPEC isolates harboring blaNDM from healthy chickens.

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Antibiotic resistance and biofilm formation in children with Enteropathogenic Escherichia coli (EPEC) in Brazilian Amazon

The Journal of Infection in Developing Countries ◽

10.3855/jidc.10674 ◽

2019 ◽

Vol 13 (08) ◽

pp. 698-705 ◽

Cited By ~ 1

Author(s):

Renata Santos Rodrigues ◽

Nucia Cristiane da Silva Lima ◽

Roger Lafontaine Mesquita Taborda ◽

Rosimar Pires Esquerdo ◽

Antonieta Rodrigues Gama ◽

...

Keyword(s):

Escherichia Coli ◽

Antibiotic Resistance ◽

Clinical Symptoms ◽

Resistance Mechanism ◽

Brazilian Amazon ◽

Resistance Rate ◽

Natural Resistance ◽

Enteropathogenic Escherichia Coli ◽

Antibiotic Resistance Profile ◽

Typical Epec

Introduction: Enteropathogenic Escherichia coli is an important causative agent of diarrhea in both developed and developing countries. Methodology: We assessed the antibiotic resistance profile and the ability of 71 Enteropathogenic Escherichia coli (EPEC) isolates from children in the age group 6 years, or younger, to form biofilm. These children were hospitalized in Cosme and Damião Children Hospital in Porto Velho, Western Brazilian Amazon, between 2010 and 2012, with clinical symptoms of acute gastroenteritis. Results: The highest frequency of atypical EPEC (aEPEC) isolates reached 83.1% (59/71). Most EPEC isolates presented Localized Adherence Like (LAL) pattern in HEp-2 cells (57.7% - 41/71). Biofilm production was observed in 33.8% (24/71) of EPEC isolates, and it means statistically significant association with shf gene (p = 0.0254). The highest antimicrobial resistance rates and a large number of multiresistant isolates 67.6% (48/71), regarded cefuroxime (CXM), ampicillin (AMP), trimethoprim-sulfamethoxazole (SXT) and tetracycline (TET), respectively, mainly in typical EPEC (tEPEC). Furthermore, 96% (68/71) of EPEC isolates in the present study were resistant to at least one antibiotic, whereas only 3 isolates were sensitive to all the tested drugs. Conclusion: Based on our findings, there was increased aEPEC identification. EPEC isolates showed high resistance rate; most strains showed multiresistance; thus, they work as warning about the continuous need of surveillance towards antimicrobial use. Besides, the ability of forming biofilm was evidenced by the EPEC isolates. This outcome is worrisome, since it is a natural resistance mechanism of bacteria.

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Determination of Antibiotic Resistance Profile and Virulence Genes in Escherichia coli Isolates from Palestinian Patients

Journal of Advances in Microbiology ◽

10.9734/jamb/2019/v19i130183 ◽

2019 ◽

pp. 1-9

Author(s):

Ghaleb Adwan

Keyword(s):

Escherichia Coli ◽

Antibiotic Resistance ◽

Antimicrobial Resistance ◽

Virulence Factors ◽

High Resistance ◽

Virulence Genes ◽

Resistance Rate ◽

E Coli ◽

Different Types ◽

Class 1

Introduction: Escherichia coli (E. coli) is considered one of the most frequent intestinal and extraintestinal pathogen. Methods: A total of 49 isolates of E. coli were collected from different clinical samples, from different hospitals in Northern West Bank-Palestine, during January-March 2019. Aims: To detect the distribution of Type III secretion system (T3SS) genes, class 1, 2 and 3 integrons, virulence factors (fyuA, papGIII, iutA and sfa⁄foc) using multiplex PCR and antibiotic resistance using disc diffusion method. Results: In this study, E. coli isolates showed high resistance rate against different types of antibiotics and 71.4% of the isolates were multidrug resistant (MDR). Only class 1 integron was detected in these isolates with prevalence 57%, and 65.7% of MDR isolates carried integron genes. The prevalence of T3SS genes was 0.0%. In addition, results of this study showed that the prevalence of virulence genes papGIII, sfa⁄foc, fyuA and iutA was 4.1%, 40%, 64%, and 79.6%, respectively. Conclusions: The isolates of E. coli showed high resistance rate against different types of antibiotics. The co-occurrence of class 1 integrons and antimicrobial resistance genes in these isolates is an additional threat for spread of the antimicrobial resistance traits which may further complicate future strategies for treatment the infections caused by this pathogen. In addition, E. coli isolated from Palestinian patients showed one or more virulence factors that could increase their pathogenic potential.

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