Fast Detection of Pathogenic Escherichia coli from Chicken Meats

Dietary proteins are linked to the pathogenic Escherichia coli (E. coli) through the intestinal tract, which is the site where both dietary proteins are metabolized and pathogenic E. coli strains play a pathogenic role. Dietary proteins are degraded by enzymes in the intestine lumen and their metabolites are transferred into enterocytes to be further metabolized. Seven diarrheagenic E. coli pathotypes have been identified, and they damage the intestinal epithelium through physical injury and effector proteins, which lead to inhibit the digestibility and absorption of dietary proteins in the intestine tract. But the increased tryptophan (Trp) content in the feed, low-protein diet or milk fractions supplementation is effective in preventing and controlling infections by pathogenic E. coli in the intestine.

Avian Pathogenic Escherichia coli (APEC): An Overview of Virulence and Pathogenesis Factors, Zoonotic Potential, and Control Strategies

Pathogens ◽

10.3390/pathogens10040467 ◽

2021 ◽

Vol 10 (4) ◽

pp. 467

Author(s):

Dipak Kathayat ◽

Dhanashree Lokesh ◽

Sochina Ranjit ◽

Gireesh Rajashekara

Keyword(s):

Escherichia Coli ◽

Current Status ◽

Neonatal Meningitis ◽

Clear Understanding ◽

Zoonotic Potential ◽

Secretion Systems ◽

Avian Pathogenic Escherichia Coli ◽

E Coli ◽

Pathogenic Escherichia Coli ◽

Tract Infections

Avian pathogenic Escherichia coli (APEC) causes colibacillosis in avian species, and recent reports have suggested APEC as a potential foodborne zoonotic pathogen. Herein, we discuss the virulence and pathogenesis factors of APEC, review the zoonotic potential, provide the current status of antibiotic resistance and progress in vaccine development, and summarize the alternative control measures being investigated. In addition to the known virulence factors, several other factors including quorum sensing system, secretion systems, two-component systems, transcriptional regulators, and genes associated with metabolism also contribute to APEC pathogenesis. The clear understanding of these factors will help in developing new effective treatments. The APEC isolates (particularly belonging to ST95 and ST131 or O1, O2, and O18) have genetic similarities and commonalities in virulence genes with human uropathogenic E. coli (UPEC) and neonatal meningitis E. coli (NMEC) and abilities to cause urinary tract infections and meningitis in humans. Therefore, the zoonotic potential of APEC cannot be undervalued. APEC resistance to almost all classes of antibiotics, including carbapenems, has been already reported. There is a need for an effective APEC vaccine that can provide protection against diverse APEC serotypes. Alternative therapies, especially the virulence inhibitors, can provide a novel solution with less likelihood of developing resistance.

Regulated delayed attenuation improves vaccine efficacy in preventing infection from avian pathogenic Escherichia coli O78 and Salmonella typhimurium

Veterinary Microbiology ◽

10.1016/j.vetmic.2021.109012 ◽

2021 ◽

Vol 254 ◽

pp. 109012

Author(s):

Yue Han ◽

Ping Luo ◽

Yuji Chen ◽

Jiali Xu ◽

Jing Sun ◽

...

Keyword(s):

Escherichia Coli ◽

Salmonella Typhimurium ◽

Vaccine Efficacy ◽

Avian Pathogenic Escherichia Coli ◽

Pathogenic Escherichia Coli

Autophagy—A Story of Bacteria Interfering with the Host Cell Degradation Machinery

Pathogens ◽

10.3390/pathogens10020110 ◽

2021 ◽

Vol 10 (2) ◽

pp. 110

Author(s):

Anna K. Riebisch ◽

Sabrina Mühlen ◽

Yan Yan Beer ◽

Ingo Schmitz

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Immune Response ◽

Mycobacterium Tuberculosis ◽

Listeria Monocytogenes ◽

Salmonella Typhimurium ◽

Innate Immune ◽

Intracellular Pathogens ◽

Response Mechanism ◽

Pathogenic Escherichia Coli

Autophagy is a highly conserved and fundamental cellular process to maintain cellular homeostasis through recycling of defective organelles or proteins. In a response to intracellular pathogens, autophagy further acts as an innate immune response mechanism to eliminate pathogens. This review will discuss recent findings on autophagy as a reaction to intracellular pathogens, such as Salmonella typhimurium, Listeria monocytogenes, Mycobacterium tuberculosis, Staphylococcus aureus, and pathogenic Escherichia coli. Interestingly, while some of these bacteria have developed methods to use autophagy for their own benefit within the cell, others have developed fascinating mechanisms to evade recognition, to subvert the autophagic pathway, or to escape from autophagy.

Front Cover: Distinct Metabolic Features of Pathogenic Escherichia coli and Shigella spp. Determined by Label‐Free Quantitative Proteomics

PROTEOMICS ◽

10.1002/pmic.202170011 ◽

2021 ◽

Vol 21 (2) ◽

pp. 2170011

Author(s):

Veronika Kuchařová Pettersen ◽

Hans Steinsland ◽

Harald G. Wiker

Keyword(s):

Escherichia Coli ◽

Quantitative Proteomics ◽

Label Free ◽

Front Cover ◽

Pathogenic Escherichia Coli ◽

Shigella Spp

Molecular characterization and antimicrobial resistance of potentially human‐pathogenic Escherichia coli strains isolated from riding horses

BMC Veterinary Research ◽

10.1186/s12917-021-02832-x ◽

2021 ◽

Vol 17 (1) ◽

Author(s):

Pouya Reshadi ◽

Fatemeh Heydari ◽

Reza Ghanbarpour ◽

Mahboube Bagheri ◽

Maziar Jajarmi ◽

...

Keyword(s):

Public Health ◽

Escherichia Coli ◽

Antimicrobial Resistance ◽

Health Concern ◽

Zoonotic Potential ◽

Drug Resistant ◽

Public Health Concern ◽

E Coli ◽

Pathogenic Escherichia Coli ◽

Amoxicillin Clavulanic Acid

Abstract Background Transmission of antimicrobial resistant and virulent Escherichia coli (E. coli) from animal to human has been considered as a public health concern. This study aimed to determine the phylogenetic background and prevalence of diarrheagenic E. coli and antimicrobial resistance in healthy riding-horses in Iran. In this research, the genes related to six main pathotypes of E. coli were screened. Also, genotypic and phenotypic antimicrobial resistance against commonly used antibiotics were studied, then phylo-grouping was performed on all the isolates. Results Out of 65 analyzed isolates, 29.23 % (n = 19) were determined as STEC and 6.15 % (n = 4) as potential EPEC. The most prevalent antimicrobial resistance phenotypes were against amoxicillin/clavulanic acid (46.2 %) and ceftriaxone (38.5 %). blaTEM was the most detected resistance gene (98.4 %) among the isolates and 26.15 % of the E. coli isolates were determined as multi-drug resistant (MDR). Three phylo-types including B1 (76.92 %), A (13.85 %) and D (3.08 %) were detected among the isolates. Conclusions Due to the close interaction of horses and humans, these findings would place emphasis on the pathogenic and zoonotic potential of the equine strains and may help to design antimicrobial resistance stewardship programs to control the dissemination of virulent and multi-drug resistant E. coli strains in the community.