scholarly journals MLST Genotypes and Antibiotic Resistance ofCampylobacterspp. Isolated from Poultry in Grenada

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Diana Stone ◽  
Margaret Davis ◽  
Katherine Baker ◽  
Tom Besser ◽  
Rohini Roopnarine ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Population Structure ◽  
Antimicrobial Resistance ◽  
Human Health ◽  
Host Species ◽  
West Indies ◽  
Antibiotic Use ◽  
Antibiotic Resistance Profile ◽  
Species Population ◽  
Sequence Types

This study determined whether multilocus sequence types (MLST) ofCampylobacterfrom poultry in 2 farms in Grenada, West Indies, differed by farm, antimicrobial resistance and farm antibiotic use. Farm A used fluoroquinolones in the water and Farm B used tetracyclines. The E-test was used to determine resistance of isolates to seven antibiotics. PCR of theIpxAgene confirmed species and MLST was used to characterize 38 isolates. All isolates were eitherC. jejuniorC. coli. Farm antibiotic use directly correlated with antimicrobial resistance ofCampylobacterisolates. Almost 80% of the isolates from Farm A were fluoroquinolone resistant and 17.9% of the isolates from Farm B were fluoroquinolone resistant. AllCampylobacterisolates from Farm A were tetracycline sensitive, whereas 35.7% of isolates from Farm B were tetracycline resistant. Six previously recognized sequence types (STs) and 2 novel STs were identified. Previously recognized STs were those overwhelmingly reported from poultry and humans globally. Isolates with the same ST did not always have the same antibiotic resistance profile. There was little ST overlap between the farms suggesting that within-farm transmission ofCampylobactergenotypes may dominate. MLST typing was useful for trackingCampylobacterspp. among poultry units and can help elucidateCampylobacterhost-species population structure and its relevance to human health.

scholarly journals Genomic diversity of Escherichia coli isolates from non-human primates in the Gambia

2020 ◽  
Author(s):  
Ebenezer Foster-Nyarko ◽  
Nabil-Fareed Alikhan ◽  
Anuradha Ravi ◽  
Gaëtan Thilliez ◽  
Nicholas Thomson ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Population Structure ◽  
Antimicrobial Resistance ◽  
Genome Sequencing ◽  
Host Species ◽  
The Gambia ◽  
Genomic Diversity ◽  
Whole Genome ◽  
E Coli ◽  
Sequence Types

AbstractIncreasing contact between humans and non-human primates provides an opportunity for the transfer of potential pathogens or antimicrobial resistance between host species. We have investigated genomic diversity, and antimicrobial resistance in Escherichia coli isolates from four species of non-human primate in the Gambia: Papio papio (n=22), Chlorocebus sabaeus (n=14), Piliocolobus badius (n=6) and Erythrocebus patas (n=1). We performed Illumina whole-genome sequencing on 101 isolates from 43 stools, followed by nanopore long-read sequencing on eleven isolates. We identified 43 sequence types (STs) by the Achtman scheme (ten of which are novel), spanning five of the eight known phylogroups of E. coli. The majority of simian isolates belong to phylogroup B2—characterised by strains that cause human extraintestinal infections—and encode factors associated with extraintestinal disease. A subset of the B2 strains (ST73, ST681 and ST127) carry the pks genomic island, which encodes colibactin, a genotoxin associated with colorectal cancer. We found little antimicrobial resistance and only one example of multi-drug resistance among the simian isolates. Hierarchical clustering showed that simian isolates from ST442 and ST349 are closely related to isolates recovered from human clinical cases (differences in 50 and seven alleles respectively), suggesting recent exchange between the two host species. Conversely, simian isolates from ST73, ST681 and ST127 were distinct from human isolates, while five simian isolates belong to unique core-genome ST complexes—indicating novel diversity specific to the primate niche. Our results are of public health importance, considering the increasing contact between humans and wild non-human primates.Impact statementLittle is known about the population structure, virulence potential and the burden of antimicrobial resistance among Escherichia coli from wild non-human primates, despite increased exposure to humans through the fragmentation of natural habitats. Previous studies, primarily involving captive animals, have highlighted the potential for bacterial exchange between non-human primates and humans living nearby, including strains associated with intestinal pathology. Using multiple-colony sampling and whole-genome sequencing, we investigated the strain distribution and population structure of E. coli from wild non-human primates from the Gambia. Our results indicate that these monkeys harbour strains that can cause extraintestinal infections in humans. We document the transmission of virulent E. coli strains between monkeys of the same species sharing a common habitat and evidence of recent interaction between strains from humans and wild non-human primates. Also, we present complete genome assemblies for five novel sequence types of E. coli.Author notesAll supporting data, code and protocols have been provided within the article or through supplementary data files. Nine supplementary figures and six supplementary files are available with the online version of this article.AbbreviationsExPEC, Extraintestinal pathogenic Escherichia coli; ST, Sequence type; AMR, Antimicrobial resistance; MLST, Multi-locus sequence typing; VFDB, Virulence factors database; SNP, single nucleotide polymorphism; SPRI, Solid phase reversible immobilisation.Data summaryThe raw sequences and polished assemblies from this study are available in the National Center for Biotechnology Information (NCBI) Short Read Archive, under the BioProject accession number PRJNA604701. The full list and characteristics of these strains and other reference strains used in the analyses are presented in Table 1 and Supplementary Files 1-4 (available with the online version of this article).

Recent Review on Subclass B1 Metallo-β-lactamases Inhibitors: Sword for Antimicrobial Resistance

2019 ◽  
Vol 20 (7) ◽  
pp. 756-762 ◽  
Author(s):  
Aditi Kaushik ◽  
Manish Kaushik ◽  
Viney Lather ◽  
J.S. Dua
Keyword(s):  
Antibiotic Resistance ◽  
Multidrug Resistance ◽  
Antimicrobial Resistance ◽  
Global Health ◽  
Human Health ◽  
Microbial Pathogens ◽  
Present Review ◽  
Drug Molecules ◽  
Global Threat ◽  
Powerful Strategy

An emerging crisis of antibiotic resistance for microbial pathogens is alarming all the nations, posing a global threat to human health. The production of the metallo-β-lactamase enzyme is the most powerful strategy of bacteria to produce resistance. An efficient way to combat this global health threat is the development of broad/non-specific type of metallo-β-lactamase inhibitors, which can inhibit the different isoforms of the enzyme. Till date, there are no clinically active drugs against metallo- β-lactamase. The lack of efficient drug molecules against MBLs carrying bacteria requires continuous research efforts to overcome the problem of multidrug-resistance bacteria. The present review will discuss the clinically potent molecules against different variants of B1 metallo-β-lactamase.

scholarly journals Antimicrobial use in COVID-19 patients in the first phase of the SARS-CoV-2 pandemic: Rapid review and evidence synthesis

2021 ◽  
Author(s):  
Wenjuan Cong ◽  
Ak Narayan Poudel ◽  
Nour Alhusein ◽  
Hexing Wang ◽  
Guiqing Yao ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Critical Illness ◽  
Antimicrobial Resistance ◽  
Early Phase ◽  
Data Extraction ◽  
Antibiotic Use ◽  
Rapid Review ◽  
Antibiotic Prescribing ◽  
Antimicrobial Use ◽  
Secondary Infections

AbstractBackgroundAs the numbers of people with COVID-19 continue to increase globally, concerns have been raised regarding the widespread use of antibiotics for the treatment of COVID-19 patients and its consequences for antimicrobial resistance during the pandemic and beyond. The scale and determinants of antibiotic use in the early phase of the pandemic, and whether antibiotic prescribing is beneficial to treatment effectiveness in COVID-19 patients, are still unknown. Unwarranted treatment of this viral infection with antibiotics may exacerbate the problem of antibiotic resistance, while antibiotic resistance may render presumptive treatment of secondary infections in COVID-19 patients ineffective.MethodsThis rapid review was undertaken to identify studies reporting antimicrobial use in the treatment of hospitalised COVID-19 patients. The review was conducted to comply with PRISMA guidelines for Scoping Reviews (http://www.prisma-statement.org/Extensions/ScopingReviews) and the protocol was registered with the Open Science Framework (OSF): http://osf.io/vp6t5. The following databases: Web of Science, EMBASE, PubMed, CNKI & VIP were searched to identify the relevant studies from 1 Dec 2019 up to 15 June 2020; no limits were set on the language or the country where studies were conducted. The search terms used were: ((“Covid-19” or “SARS-CoV-2” or “Coronavirus disease 2019” or “severe acute respiratory syndrome coronavirus-2”) and ((“antibiotic prescribing” or “antibiotic use” or “antibiotic*”) or “antimicrobial *” or “antimicrobial therapy” or “antimicrobial resistance” or “antimicrobial stewardship”)). A total of 1216 records were identified through database searching and 118 clinical studies met the inclusion criteria and were taken into data extraction. A bespoke data extraction form was developed and validated through two independent, duplicate extraction of data from five Records. As all the included studies were descriptive in nature, we conducted descriptive synthesis of data and reported pooled estimates such as mean, percentage and frequency. We created a series of scenarios to capture the range of rationales for antibiotic prescribing presented in the included studies.ResultsOur results show that during the early phase of the pandemic, 8501 out of 10 329 COVID-19 patients (82·3%) were prescribed antibiotics; antibiotics were prescribed for COVID-19 patients regardless of reported severity, with a similar mean antibiotic prescribing rate between patients with severe or critical illness (75·4%) and patients with mild or moderate illness (75·1%). The top five frequently prescribed antibiotics for hospitalised COVID-19 patients were azithromycin (28·0 % of studies), ceftriaxone (17·8%), moxifloxacin (14·4%), meropenem (14·4%) and piperacillin/tazobactam (12·7%). The proportion of patients prescribed antibiotics without clinical justification was 51·5% vs 41·9 % for patients with mild or moderate illness and those with severe or critical illness respectively. Comparison of patients who were provided antibiotics with a clinical justification with those who were given antibiotics without clinical justification showed lower mortality rates (9·5% vs 13·1%), higher discharge rates (80·9% vs 69·3%) and shorter length of hospital of stay (9·3 days vs 12·2 days). Only 9·7% of patients in our included studies were reported to have secondary infections.ConclusionsAntibiotics were prescribed indiscriminately for hospitalised COVID-19 patients regardless of severity of illness during the early phase of the pandemic. COVID-19 related concerns and lack of knowledge drove a large proportion of antibiotic use without specific clinical justification. Although we are still in the midst of the pandemic, the goals of antimicrobial stewardship should remain unchanged for the treatment of COVID-19 patients.

scholarly journals Differences in Neisseria gonorrhoeae population structure and antimicrobial resistance pattern between men who have sex with men and heterosexuals

2016 ◽  
Vol 145 (2) ◽  
pp. 379-385 ◽  
Author(s):  
J. SERRA-PLADEVALL ◽  
M. J. BARBERÁ ◽  
A. E. CALLARISA ◽  
R. BARTOLOMÉ-COMAS ◽  
A. ANDREU
Keyword(s):  
Population Structure ◽  
Antimicrobial Resistance ◽  
Neisseria Gonorrhoeae ◽  
Antimicrobial Susceptibility ◽  
Sexual Practices ◽  
Resistance Pattern ◽  
High Prevalence ◽  
Sex With Men ◽  
Resistance Rates ◽  
Sequence Types

SUMMARYThis study compared the antimicrobial susceptibility and genotypes of strains of Neisseria gonorrhoeae isolated from men who have sex with men (MSM) and from heterosexuals. One hundred and eleven strains were characterized from 107 patients, comprising 57 strains from 54 heterosexuals and 54 strains from 53 MSM. Antimicrobial resistance rates were higher in strains from heterosexual patients, with resistance to cefixime (P = 0·0159) and ciprofloxacin (P = 0·002) being significantly higher. Typing by N. gonorrhoeae multi-antigen sequence typing (NG-MAST) showed that the most prevalent sequence types (ST) and genogroups (G) respectively were ST2400, ST2992, and ST5793, and G1407, G2992, and G2400. A statistically significant association was observed for MSM and genogroups G2400 (P = 0·0005) and G2992 (P = 0·0488), and G1407 with heterosexuals (P = 0·0002). We conclude that in our region distinct populations of gonococci are circulating among subjects with different sexual practices, with their corresponding transmission patterns. Furthermore, the high prevalence of genotype G2400 in MSM, has not to our knowledge been previously described.

scholarly journals Population Structure and Antimicrobial Resistance of Canine UropathogenicEscherichia coli

2018 ◽  
Vol 56 (9) ◽  
Author(s):  
Tessa E. LeCuyer ◽  
Barbara A. Byrne ◽  
Joshua B. Daniels ◽  
Dubraska V. Diaz-Campos ◽  
G. Kenitra Hammac ◽  
...  
Keyword(s):  
Population Structure ◽  
Antimicrobial Resistance ◽  
Companion Animals ◽  
Sequence Type ◽  
Content Type ◽  
E Coli ◽  
Extraintestinal Disease ◽  
Human Infections ◽  
Sequence Types

ABSTRACTEscherichia coliis the most common cause of human and canine urinary tract infection (UTI). Clonal groups, often with high levels of antimicrobial resistance, are a major component of theE. colipopulation that causes human UTI. While little is known about the population structure ofE. colithat causes UTI in dogs, there is evidence that dogs and humans can share fecal strains ofE. coliand that human-associated strains can cause disease in dogs. In order to better characterize theE. colistrains that cause canine UTI, we analyzed 295E. coliisolates obtained from canine urine samples from five veterinary diagnostic laboratories and analyzed their multilocus sequence types, phenotypic and genotypic antimicrobial resistance profiles, and virulence-associated gene repertoires. Sequence type 372 (ST372), an infrequent human pathogen, was the predominant sequence type in dogs at all locations. Extended-spectrum β-lactamase-producing isolates withblaCTX-Mgenes were uncommon in canine isolates but when present were often associated with sequence types that have been described in human infections. This provides support for occasional cross-host-species sharing of strains that cause extraintestinal disease and highlights the importance of understanding the role of companion animals in the overall transmission patterns of extraintestinal pathogenicE. coli.

scholarly journals Anthropogenic Activities and the Problem of Antibiotic Resistance in Latin America: A Water Issue

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2693
Author(s):  
Delfina C. Domínguez ◽  
Luz María Chacón ◽  
D’Janique Wallace
Keyword(s):  
Antibiotic Resistance ◽  
Latin America ◽  
Antimicrobial Resistance ◽  
Latin American ◽  
Anthropogenic Activities ◽  
Antibiotic Use ◽  
Modern Medicine ◽  
Resistant Bacteria ◽  
Beta Lactam ◽  
Water Ecosystems

Antibiotics revolutionized modern medicine and have been an excellent tool to fight infections. However, their overuse and misuse in different human activities such as health care, food production and agriculture has resulted in a global antimicrobial resistance crisis. Some regions such as Latin America present a more complex scenario because of the lack of resources, systematic studies and legislation to control the use of antimicrobials, thus increasing the spread of antibiotic resistance. This review aims to summarize the state of environmental antibiotic resistance in Latin America, focusing on water resources. Three databases were searched to identify publications on antimicrobial resistance and anthropogenic activities in relation to natural and artificial water ecosystems. We found that antibiotic resistant bacteria, mainly against beta lactam antibiotics, have been reported in several Latin American countries, and that resistant bacteria as well as resistant genes can be isolated from a wide variety of aquatic environments, including drinking, surface, irrigation, sea and wastewater. It is urgent to establish policies and regulations for antibiotic use to prevent the increase of multi-drug resistant microorganisms in the environment.

scholarly journals Knowledge, attitudes and practices of animal farm owners/workers on antibiotic use and resistance in Amhara region, north western Ethiopia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kindu Geta ◽  
Mulugeta Kibret
Keyword(s):  
Antibiotic Resistance ◽  
Antimicrobial Resistance ◽  
Antibiotic Use ◽  
Positive Attitudes ◽  
The Mean ◽  
Animal Farm ◽  
Different Sources ◽  
Knowledge Attitude And Practice ◽  
North Western ◽  
Western Ethiopia

AbstractInappropriate use of antibiotics in animal and human plays a role in the emergence and spread of bacteria resistant to antibiotics which threatens human health significantly. Although extensive use of these antibiotics could contribute to the development of drug resistance, information on the knowledge, attitude and practice of antimicrobial resistance and use among animal farm owners/workers in north western Ethiopia is rare. The objective of the present study was to assess knowledge, attitude and practice of animal farm owner/workers towards antibiotic resistance and use in Amhara regional state north western Ethiopia. A cross sectional study was conducted in selected cities of Amhara regional state from January to February, 2020. Data was collected from 91 participants using structured questionnaire and analyzed using SPSSS version 23. The results showed that 96.7% of respondents gave antibiotics to treat their livestock from different sources. Most of the respondents bought their antibiotics from private pharmacies without prescription and the most frequently mentioned antibiotics used to treat animal diseases was tetracycline (76.9%), followed by ampicillin (72.5%). Although, 90.1% of the animal farm owners heard about antibiotics and antibiotic resistance from different sources, they did not know the factors contributing to the transmission of resistant bacteria to humans and the impact of antibiotic resistance on human and animals’ health. Using the mean score 4.44 ± 0.15 as the cut-off, half of the animal farm owners/workers had good knowledge about antimicrobial resistance and use. 52.5% of animal farm owners/workers had positive attitudes towards wise antibiotic use and resistance with a mean score of 28.4 ± 0.5. However, 52.75% participants had poor practice with the mean score of practice 4.95 ± 0.17. Better knowledge, positive attitudes and better practices on antibiotic use and resistance were associated with farm owners/workers who engaged in higher education. Although poor awareness on antimicrobial resistance was perceived by 76.9% of respondents as very important factors that contribute to increasing antibiotic resistance, increasing the use of complementary treatments was perceived by the majority of respondents as very important strategies that contribute to reduce antibiotic use and resistance. The current study disclosed that there is low level of awareness among animal farm owners about the correct use of antibiotics and resistance. It is necessary to raise awareness, develop and implement interventions to reduce antimicrobial use and antibiotic resistance in the study area.

scholarly journals Hospital use of antibiotics as the main driver of infections with antibiotic-resistant bacteria – a reanalysis of recent data from the European Union

2019 ◽  
Author(s):  
Matthias M. Fischer ◽  
Matthias Bild
Keyword(s):  
European Union ◽  
Antibiotic Resistance ◽  
Antimicrobial Resistance ◽  
Antibiotic Use ◽  
Resistant Bacteria ◽  
Individual Member ◽  
The European Union ◽  
Hospital Sector ◽  
Main Driver ◽  
Resistance Rates

AbstractAntimicrobial resistance in bacteria causes significant morbidity worldwide. The development and acquisition of resistance to antibiotics is believed to primarily develop under the selective pressure of widespread antibiotic use in humans, however antimicrobial usage in livestock has been proposed as additional, if not principal, driver of antibiotic resistance. In this work, we correlate recent data from the European Union on antibiotic resistance rates with data on antibiotic usage in the primary care and hospital sector and data on veterinary antimicrobial consumption across the individual member states. We quantify the strength of these different potential drivers of antimicrobial resistance in order to compare their biological importance. We found that the correlation between antibiotic use in the hospital sector and antibiotic resistance rates is significantly higher than the correlation between resistance rates and any of the other two predictors. This suggests increased antibiotic use in hospitals as the main driver of the development of antibiotic resistances and necessitates further research on and a re-evaluation of the risks associated with antibiotic use in human and veterinary medicine.

Antimicrobial Resistance is a Global Problem

2018 ◽  
Vol 2 (4) ◽  
pp. 6-19
Author(s):  
A.G. Salmanov ◽  
V.V. Trokhymchuk ◽  
O.M. Verner ◽  
O.O. Lugach
Keyword(s):  
Public Health ◽  
Health Care ◽  
Antibiotic Resistance ◽  
Antimicrobial Resistance ◽  
Animal Health ◽  
Antibiotic Use ◽  
Modern Medicine ◽  
Full Spectrum ◽  
The Public ◽  
Treatment Action

Infectious agents resistance to antimicrobials remains a challenging open problem of health care around the world. As a result, treatment-induced infections pose a serious threat to public health in general. This problem has become so important that the overwhelming majority of countries consider it a threat to the national security. Resistance to antimicrobials threatens to offset the very fundamentals of modern medicine and the sustainability of the public health system effective global response to a permanent infectious diseases threat. Today, antimicrobial resistance issues can be tackled provided that one implements an effective One Health approach (the principle of human and animal health interrelation), assuming that there is a coordination between different sectors and subjects, including experts in medicine, veterinary medicine, agriculture, ecology, and well-informed consumers. To ensure effectiveness of treatment, action is urgently needed to counteract the further development and spread of antibiotic resistance, which is driven by antibiotic use in all sectors. Since this resistance has no ecological, sectoral or geographical borders, its appearance in one sector affects resistance in other sectors. National authorities, veterinarians, physicians, patients and farmers all have key roles in preserving the power of antibiotics. The prevention and containment of antibiotic resistance therefore requires addressing all risk factors for the development and spread of antibiotic resistance across the full spectrum of conditions, sectors, settings (from health care to use in food-animal production) and countries. This article explores the options for prevention and containment of antibiotic resistance in the food-chain through national coordination, including the regulation and reduction of antibiotic use in food animals, training and capacity building, surveillance of resistance trends and antibiotic usage, promotion of knowledge and research, and advocacy and communication to raise awareness of the issues. The article suggests possible ways for adopting a holistic, intersectoral, multifaceted approach to this growing problem.

Fitness costs associated with the acquisition of antibiotic resistance

2017 ◽  
Vol 61 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Sara Hernando-Amado ◽  
Fernando Sanz-García ◽  
Paula Blanco ◽  
José L. Martínez
Keyword(s):  
Antibiotic Resistance ◽  
Infectious Diseases ◽  
Human Health ◽  
Organ Transplantation ◽  
Antibiotic Use ◽  
Fitness Costs ◽  
Antibiotic Resistant ◽  
Susceptible Population ◽  
Bacterial Physiology ◽  
Therapeutic Procedures

Acquisition of antibiotic resistance is a relevant problem for human health. The selection and spread of antibiotic-resistant organisms not only compromise the treatment of infectious diseases, but also the implementation of different therapeutic procedures as organ transplantation, advanced surgery or chemotherapy, all of which require proficient methods for avoiding infections. It has been generally accepted that the acquisition of antibiotic resistance will produce a general metabolic burden: in the absence of selection, the resistant organisms would be outcompeted by the susceptible ones. If that was always true, discontinuation of antibiotic use would render the disappearance of resistant microorganisms. However, several studies have shown that, once resistance emerges, the recovery of a fully susceptible population even in the absence of antibiotics is not easy. In the present study, we review updated information on the effect of the acquisition of antibiotic resistance in bacterial physiology as well as on the mechanisms that allow the compensation of the fitness costs associated with the acquisition of resistance.

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