Phylogenetic Grouping of Human Ocular Escherichia coli Based on Whole-Genome Sequence Analysis
| العنوان: | Phylogenetic Grouping of Human Ocular Escherichia coli Based on Whole-Genome Sequence Analysis |
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| المؤلفون: | Shalem Raj Padakandla, Konduri Ranjith, Gumpili Sai Prashanthi, Chinthala Reddy SaiAbhilash, Savitri Sharma, Sisinthy Shivaji |
| المصدر: | Microorganisms Volume 8 Issue 3 Microorganisms, Vol 8, Iss 3, p 422 (2020) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Microbiology (medical), Virulence, medicine.disease_cause, E. coli, Microbiology, whole genome analysis, Article, ocular, 03 medical and health sciences, Antibiotic resistance, Phylogenetics, Virology, Escherichia, medicine, AMR, lcsh:QH301-705.5, Escherichia coli, Prophage, 030304 developmental biology, 0303 health sciences, biology, 030306 microbiology, pathotype, biology.organism_classification, phylogenetics, lcsh:Biology (General), P1 phage, Bacteria |
| الوصف: | Escherichia coli is a predominant bacterium in the intestinal tracts of animals. Phylogenetically, strains have been classified into seven phylogroups, A, B1, B2, C, D, E, and F. Pathogenic strains have been categorized into several pathotypes such as Enteropathogenic (EPEC), Enterotoxigenic (ETEC), Enteroinvasive (EIEC), Enteroaggregative (EAEC), Diffusely adherent (DAEC), Uropathogenic (UPEC), Shiga-toxin producing (STEC) or Enterohemorrhagic (EHEC) and Extra-intestinal pathogenic E. coli (ExPEC). E. coli also survives as a commensal on the ocular surface. However, under conditions of trauma and immune-compromised states, E. coli causes conjunctivitis, keratitis, endopthalmitis, dacyrocystitis, etc. The phylogenetic affiliation and the pathotype status of these ocular E. coli strains is not known. For this purpose, the whole-genome sequencing of the 10 ocular E. coli strains was accomplished. Based on whole-genome SNP variation, the ocular E. coli strains were assigned to phylogenetic groups A (two isolates), B2 (seven isolates), and C (one isolate). Furthermore, results indicated that ocular E. coli originated either from feces (enteropathogenic and enterotoxigenic), urine (uropathogenic), or from extra-intestinal sources (extra-intestinal pathogenic). A high concordance was observed between the presence of AMR (Antimicrobial Resistance) genes and antibiotic resistance in the ocular E. coli strains. Furthermore, several virulent genes (fimB to fimI, papB to papX, etc.) and prophages (Enterobacteria phage HK97, Enterobacteria phage P1, Escherichia phage D108 etc.) were unique to ocular E. coli. This is the first report on a whole-genome analysis of ocular E. coli strains. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2076-2607 |
| DOI: | 10.3390/microorganisms8030422 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::721a9985f639db00712c65b279da8ae7 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....721a9985f639db00712c65b279da8ae7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20762607 |
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| DOI: | 10.3390/microorganisms8030422 |