About: Clinical and sero-molecular characterization of Escherichia coli with an emphasis on hybrid strain in healthy and diarrheic neonatal calves in Egypt

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About: Clinical and sero-molecular characterization of Escherichia coli with an emphasis on hybrid strain in healthy and diarrheic neonatal calves in Egypt Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Clinical and sero-molecular characterization of Escherichia coli with an emphasis on hybrid strain in healthy and diarrheic neonatal calves in Egypt
Creator	Abdel-Raheem, Abdel-Raheem Aref, Nasr-Eldin Hussien, Soher Kamaly, Hanaa
Source	Medline; PMC
abstract	The present study was carried out to characterize pathogenic E. coli in apparently healthy and diarrheic neonatal calves with special reference to the hybrid E. coli strains and evaluate their clinical and hematobiochemical consequences. One hundred and seventy calves (age 1-30 days) were divided into two groups: apparently healthy (n = 70) and diarrheic (n=100). Animals were subjected to thorough clinical, hematobiochemical and bacteriological examinations. Clinically, diarrheic calves showed various degree of diarrhea with the presence of cardinal signs of dehydration in moderate and severe cases. There was a significant increase (p<0.05) in the hemogram parameters with uremia and hyperkalemia in calves with severe diarrhea. The O-H serotyping of cultural and biochemically positive isolates identified 31 isolates belonging to 12 serotypes including O44:H18, O55:H7, O146:H21, O113:H4, O121:H7, O26:H11, O91:H21, O111:H2, O8, O127: H6, O86 and O128:H2. Molecular characterization of E. coli isolates on three toxin genes: heat-stable enterotoxin (sta), shiga toxin type 1 and 2 (stx1 and stx2) revealed two well-known pathotypes (EPEC O44:H18, O55:H7, O146:H21, O113:H4, O121:H7 and EHEC O26:H11 O91:H21 O111:H2) with high frequency of enterohemorrhagic E. coli (EHEC). Molecular analysis also showed a number of E. coli isolates that carry sta and stx1 or sta and stx2 gene and belonged to O8, and O127:H6, O86 and O128:H2. These isolates were identified as hybrid E. coli strains (ETEC-STEC) and found in both apparently healthy and diarrheic calves. In conclusion, the present study identified high frequency of pathogenic E. coli in both apparently healthy and diarrheic calves. Serological and molecular analysis of E. coli isolates showed that high frequency of EHEC and presence of a new phenotype, STEC–ETEC hybrid, revealing their importance in the etiopathogenesis of diarrhea in calves and reinforcing the role of these animals as a reservoir of potentially pathogenic E. coli for humans.
has issue date	2018-10-12(xsd:dateTime)
bibo:doi	10.4314/ovj.v8i4.1
bibo:pmid	30425958
has license	cc-by-nc-sa
sha1sum (hex)	e222c3bbd05eb665b185124594a7d85712735418
schema:url	https://doi.org/10.4314/ovj.v8i4.1
resource representing a document's title	Clinical and sero-molecular characterization of Escherichia coli with an emphasis on hybrid strain in healthy and diarrheic neonatal calves in Egypt
has PubMed Central identifier	PMC6203894
has PubMed identifier	30425958
schema:publication	Open Vet J
resource representing a document's body	covid:e222c3bbd05eb665b185124594a7d85712735418#body_text
is schema:about of	named entity 'GROUPS' named entity 'CARRY' named entity 'TYPE 1' named entity 'ETEC' named entity 'HEAT' named entity 'VARIOUS' named entity 'HEMOGRAM' named entity 'DAYS' named entity 'STX2 GENE' named entity 'HYPERKALEMIA' named entity 'PRESENT' named entity 'CASES' named entity 'CARDINAL' named entity 'GENES' named entity 'NEW' named entity 'DIVIDED' named entity 'TOXIN TYPE' named entity 'DEGREE' named entity 'E. COLI' named entity 'NEONATAL' named entity 'SIGNS' named entity 'HIGH FREQUENCY' named entity 'ROLE' named entity 'NUMBER OF' named entity 'PATHOGENIC' named entity 'ANIMALS' named entity 'SEVERE' named entity 'MOLECULAR ANALYSIS' named entity 'TO CHARACTERIZE' named entity 'EXAMINATIONS' named entity 'calves' named entity 'seventy' named entity 'toxin' named entity 'identified' named entity 'shiga toxin' named entity 'CALVES' named entity 'CHARACTERIZATION' named entity 'EGYPT' named entity 'STA' named entity 'STUDY' named entity 'WAS A' named entity 'REVEALED' named entity 'IDENTIFIED' named entity 'SHIGA TOXIN' named entity 'STRAINS' named entity 'HYBRID' named entity 'HEALTHY' named entity 'SPECIAL' named entity 'TOXIN' named entity 'HUMANS' named entity 'DIARRHEA' named entity 'CHARACTERIZATION' named entity 'CONSEQUENCES' named entity 'THEIR' named entity 'DEHYDRATION' named entity 'REFERENCE' named entity 'CLINICAL' named entity 'NEONATAL' named entity 'SERO' named entity 'ONE HUNDRED AND SEVENTY' named entity 'BACTERIOLOGICAL' named entity 'SEVERE DIARRHEA' named entity 'CALVES' named entity 'STABLE' named entity 'CARRIED' named entity 'ENTEROHEMORRHAGIC' named entity 'INCREASE' named entity 'SEROLOGICAL' named entity 'THESE' named entity '70%' named entity 'SEROTYPING' named entity 'PARAMETERS' named entity 'HYBRID STRAIN' named entity 'ESCHERICHIA COLI' named entity '28P' named entity 'CULTURAL' named entity 'ENTEROTOXIN' named entity 'ISOLATES'

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