Advertisement

Topics

Genotypic antimicrobial resistance assays for use on E. coli isolates and stool specimens.

08:00 EDT 10th May 2019 | BioPortfolio

Summary of "Genotypic antimicrobial resistance assays for use on E. coli isolates and stool specimens."

Antimicrobial resistance (AMR) is an emerging public health problem and methods for surveillance are needed. We designed 85 sequence-specific PCR reactions to detect 79 genes or mutations associated with resistance across 10 major antimicrobial classes, with a focus on E. coli. The 85 qPCR assays demonstrated >99.9% concordance with sequencing. We evaluated the correlation between genotypic resistance markers and phenotypic susceptibility results on 239 E. coli isolates. Both sensitivity and specificity exceeded 90% for ampicillin, ceftriaxone, cefepime, imipenem, ciprofloxacin, azithromycin, gentamicin, amikacin, trimethoprim/sulfamethoxazole, tetracycline, and chloramphenicol phenotypic susceptibility results. We then evaluated the assays on direct stool specimens and observed a sensitivity of 97% ± 5 but, as expected, a lower specificity of 75% ± 31 versus the genotype of the E. coli cultured from stool. Finally, the assays were incorporated into a convenient TaqMan Array Card (TAC) format. These assays may be useful for tracking AMR in E. coli isolates or directly in stool for targeted testing of the fecal antibiotic resistome.

Affiliation

Journal Details

This article was published in the following journal.

Name: PloS one
ISSN: 1932-6203
Pages: e0216747

Links

DeepDyve research library

PubMed Articles [12502 Associated PubMed Articles listed on BioPortfolio]

Phenotypic and genotypic study on antimicrobial resistance patterns of E. coli isolates from bovine mastitis.

It is important to evaluate the antimicrobial resistance pattern by genotypic and phenotypic methods in epidemiological studies in order to control antimicrobial resistance and to improve the outcome ...

The emergence of metronidazole and vancomycin reduced-susceptibility in Clostridium difficile isolates in Iran.

Clostridium difficile is the main causative agent of antibiotic-associated diarrhoea (AAD) and pseudomembranous colitis (PMC). The accumulation of antimicrobial resistance in C. difficile strains can ...

Age-Associated Distribution of Antimicrobial-Resistant Salmonella enterica and Escherichia coli Isolated from Dairy Herds in Pennsylvania, 2013-2015.

Antimicrobial resistance has become a major global public health concern, and agricultural operations are often implicated as a source of resistant bacteria. This study characterized the prevalence of...

Population Structure and Antimicrobial Resistance Traits of Avian-origin mcr-1-positive Escherichia coli in Eastern China, 2015 to 2017.

Recent emergence of mcr-1-positive E. coli (MCRPEC) is causing serious concern around the world. Due to poultry-origin E. coli holding zoonotic potential, the improved understandings of MCRPEC populat...

Changing paradigm of antibiotic resistance amongst Escherichia coli isolates in Indian pediatric population.

Antimicrobial resistance happens when microorganisms mutates in manners that render the drugs like antibacterial, antiviral, antiparasitic and antifungal, ineffective. The normal mutation process is e...

Clinical Trials [4123 Associated Clinical Trials listed on BioPortfolio]

Quinolone Resistance in Bloodstream Isolates of Escherichia Coli

This proposed study aims to document the risk factors for quinolone resistance in bloodstream isolates of E. coli. Additionally, the adequacy of empiric antibiotic therapy for E. coli bloo...

Treating Pyelonephritis an Urosepsis With Pivmecillinam

Febrile urinary tract infections and urosepsis are common and potentially serious infections that require effective antimicrobial treatment. The duration of parenteral treatment depends on...

Community - Associated Extended-spectrum Beta-lactamases (ESBL)

The purpose of this study is to review patients with E. coli infections at the University of Pittsburgh Medical Center (UPMC) from September 1, 2006 to August 31, 2007 to determine if thes...

Antibiotic Resistant Community-Acquired E. Coli

The purpose of this study is to review patients with E. coli infections at UPMC from January 1, 2004 to December 31, 2005 to determine if these infections have arisen in the community rath...

PTM202 and Modulation of Host Resistance to Diarrheagenic E. Coli

The APA12/PANTER study is a parallel 3-weeks intervention study. Subjects will be randomly assigned to one of two treatment groups; placebo or PTM202 (n=36 per group). After an overnight f...

Medical and Biotech [MESH] Definitions

The ability of bacteria to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS).

The ability of microorganisms, especially bacteria, to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS).

Tuberculosis resistant to chemotherapy with two or more ANTITUBERCULAR AGENTS, including at least ISONIAZID and RIFAMPICIN. The problem of resistance is particularly troublesome in tuberculous OPPORTUNISTIC INFECTIONS associated with HIV INFECTIONS. It requires the use of second line drugs which are more toxic than the first line regimens. TB with isolates that have developed further resistance to at least three of the six classes of second line drugs is defined as EXTENSIVELY DRUG-RESISTANT TUBERCULOSIS.

Strains of ESCHERICHIA COLI that are a subgroup of SHIGA-TOXIGENIC ESCHERICHIA COLI. They cause non-bloody and bloody DIARRHEA; HEMOLYTIC UREMIC SYNDROME; and hemorrhagic COLITIS. An important member of this subgroup is ESCHERICHIA COLI O157-H7.

Strains of Escherichia coli that possess virulence traits which allow them to invade, colonize, and induce disease in tissues outside of the GASTROINTESTINAL TRACT. They are a cause of URINARY TRACT INFECTIONS (UROPATHOGENIC ESCHERICHIA COLI); neonatal MENINGITIS; SEPSIS; PNEUMONIA; and SURGICAL WOUND INFECTION.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Immunoassay - ELISA
Immunoassays are quick and accurate tests to detect specific molecules. Immunoassays rely on an antibody to bind to the specific structure of a molecule. Antibodies are proteins generated by animals in response to the invasion of a foreign molecule (anti...

Public Health
Alternative Medicine Cleft Palate Complementary & Alternative Medicine Congenital Diseases Dentistry Ear Nose & Throat Food Safety Geriatrics Healthcare Hearing Medical Devices MRSA Muscular Dyst...


Searches Linking to this Article