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405166

MOLECULAR ANALYSIS OF OUTER CAPSID PROTEIN (VP7) GENE OF ROTAVIRUS RECENTLY ISOLATED FROM NEWLY BORN CALVES IN EGYPT

Article

Last updated: 20 Jan 2025

Subjects

-

Tags

Virology

Abstract

Rotavirus is a contagious viral disease causing acute watery diarrhea. It has a potential zoonotic and economic importance in calves under one month of age, widely. So during early January 2024, a total of 46 diarrheic samples were collected from dairy calves (2-4 weeks old) in El-Sharqia, Giza, New Valley (El-Kharga Oasis), and El-Beheira governorate. Tissue culturing, serological (ELISA), and molecular identification based on sequencing analysis of the VP7 gene of Rotavirus A (RVA) were done. Among the 46 diarrheic samples, only 24 samples (52%) were RVA-positive by ELISA and negative for both coronavirus and E. coli. RVA was successfully isolated on MDBK and VERO cells, as an obvious cytopathic effect was produced at the first and second passages of both cell lines, respectively. Haemagglutination (HA) activity of positive samples ranged from 1:4 to 1:16. Molecular and sequencing analysis of the VP7 gene revealed that the four sequenced rotavirus isolates belong to Bovine Rota Virus A (BoRVA), Genotype 6, with 100% identity to each other and 98.26% similarity with the local Egyptian isolates, clustered in the G6 lineage with the Argentina, USA (Scour Guard vaccine), Ireland, and Indian BoRVA strains with identity matrices of 95.42%, 93.4%, 93.31%, and 90.49%, respectively. Conclusively, the Egyptian BoRVA G6 strains are widely circulating in Upper and Lower Egypt among dairy calves. It is recommended to evaluate those strains together with G8 and G10 as vaccine candidates in the locally prepared vaccine to confer full protection against BoRVA circulating in Egypt.

DOI

10.21608/avmj.2025.320432.1398

Keywords

Genotype 6, MDBK, Rotavirus, VERO, VP 7 gene

Authors

First Name

ABD EL HAMID,

Last Name

M.I.

MiddleName

-

Affiliation

Genetic Engineering Research Department, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC). Cairo, 11381, Egypt.

Email

mohamedvsvri@gmail.com

City

-

Orcid

-

First Name

AMANI

Last Name

SALEH

MiddleName

ALI

Affiliation

1 Prof. of Virology, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC). Cairo, 11381, Egypt.

Email

dr.amani-ali@hotmail.com

City

Cairo

Orcid

-

First Name

NADINE

Last Name

EL-SEBAY

MiddleName

A.

Affiliation

Genetic Engineering Research Department, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC). Cairo, 11381, Egypt.

Email

nsebaie@gmail.com

City

Cairo

Orcid

-

First Name

LUBNA

Last Name

FARAHAT

MiddleName

F.

Affiliation

Department of Quality Management, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC). Cairo, 11381, Egypt

Email

lubnafady@gmail.com

City

Cairo

Orcid

-

First Name

EMAN

Last Name

EL-NAGAR

MiddleName

M.S.

Affiliation

Genetic Engineering Research Department, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC). Cairo, 11381, Egypt.

Email

emanalnagar81@gmail.com

City

Cairo

Orcid

-

Volume

71

Article Issue

184

Related Issue

52949

Issue Date

2025-01-01

Receive Date

2024-09-12

Publish Date

2025-01-01

Page Start

579

Page End

591

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_405166.html

Detail API

http://journals.ekb.eg?_action=service&article_code=405166

Order

405,166

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

https://avmj.journals.ekb.eg/

MainTitle

MOLECULAR ANALYSIS OF OUTER CAPSID PROTEIN (VP7) GENE OF ROTAVIRUS RECENTLY ISOLATED FROM NEWLY BORN CALVES IN EGYPT

Details

Type

Article

Created At

20 Jan 2025