Molecular detection of mixed infection with peste des petits ruminants and retroviruses in Egyptian sheep and goats

Faculty Veterinary Medicine Year: 2023
Type of Publication: ZU Hosted Pages: 102
Authors:
Journal: Tropical Animal Health and Production Springer Link Volume: 55
Keywords : Molecular detection , mixed infection with peste    
Abstract:
Peste des petits ruminants (PPR) is a contagious viral disease causing massive economic loss to animal industries in endemic countries including Egypt. Although a vaccine is available, coinfections can overwhelm the animal immune system and interfere with vaccine protection. Small ruminant retrovirus (SRR), including enzootic nasal tumor virus (ENTV) and Jaagsiekte sheep retrovirus (JSRV), is responsible for coinfections with PPR. Investigation of clinical cases in this study confirmed the presence of PPR virus by RT-PCR among four flocks. Sequence of five PPR amplicons revealed that all strains had 100% aa similarity and belonged to lineage IV. In addition, these strains had 98-99% nt similarity with all previous Egyptian and African strains from Sudan (MK371449) and Ethiopia (MK371449). Illumina sequencing of a representative sample showed a genome of 5753 nt compatible with ENT-2 virus with 98.42% similarity with the Chinese strain (MN564750.1). Four ORFs representing gag, pro, pol, and env genes were identified and annotated. Pro gene was highly stable while gag, pol, and env showed eight, two, and three aa differences with the reference strains. Sanger sequencing revealed that two amplicons were ENT-2 virus, and one was JSRV. ENT-2 sequences had 100% similarity with KU258870 and KU258871 reference strains while JSRV was 100% similar to the EF68031 reference strain. The phylogenetic tree showed a close relationship between the ENT of goats and the JSRV of sheep. This study highlights the complexity of PPR molecular epidemiology, with SRR that was not molecularly characterized previously in Egypt.
   
     
 
       

Author Related Publications

  • Nader Maher Sobhy Yakoub, " دراسة مقارنة للكفاءة المناعية لنوعين مختلفين من تحصين الحمى القلاعية فى الاغنام", لايوجد, 1900 More
  • Nader Maher Sobhy Yakoub, "Detection and molecular characterization of astroviruses in turkeys", Springer, 2016 More
  • Nader Maher Sobhy Yakoub, "Recent isolation of ovine herpesvirus2 from unusual symptomatic infection of sheep in Egypt", Marsland press, 2013 More
  • Nader Maher Sobhy Yakoub, "Phylogenetic analysis of Egyptian foot and mouth disease virus endemic strains", Journal of American Science, 2014 More
  • Nader Maher Sobhy Yakoub, "Comparative molecular characterization of bovine herpesvirus-1 strains from Egypt and the United States", Life Science Journal, 2014 More

Department Related Publications

  • Hassan Fouad Ali Mosa, "التغيرات في بعض مكونات الدم في الجاموس الناتجة عن الإصابة بمرض الحمي القلاعية ", لايوجد, 1900 More
  • Hassan Fouad Ali Mosa, "استخدام بعض طاردات الديدان المعدية في الجمال ", لايوجد, 1900 More
  • Sobhi Elmaghawry Mohamed, "على طفيليات الجمال المسببة للاسهال وعلاجها فى محافظة الشرقية - مصر ", لايوجد, 1900 More
  • Abd Allah Ali Abozied , "4. دراسات عن الإصابات التنفسية في الأبقار.", لايوجد, 1900 More
  • Abd Allah Ali Abozied , "6. دراسات عن بعض الاصابات الجلديه فى الأبقار.", لايوجد, 1900 More
Tweet