| 
              
              
              Open Access  
 
              
              
              
              Research 
              
              
(Published 
				online: 12-09-2016)  
              8. 
				
				First detection of canine 
				parvovirus type 2b from diarrheic dogs in Himachal Pradesh -
				
				
				Shalini Sharma, Prasenjit Dhar, Aneesh Thakur, Vivek Sharma
				
				
				and Mandeep Sharma 
              
              Veterinary World, 9(9): 964-969   
              
   
                
                
doi: 
              
				
				10.14202/vetworld.2016.964-969 
                
				  
				
				Shalini Sharma:
				
              
              	Department of 
				Veterinary Microbiology, Dr. G. C. Negi College of Veterinary 
				and Animal Sciences, Chaudhary Sarwan Kumar Himachal Pradesh 
				Krishi Vishvavidyalaya, Palampur - 176 062, Himachal Pradesh, 
				India; sharmashalini096@gmail.com 
				
				Prasenjit Dhar:
				
              
              Department of 
				Veterinary Microbiology, Dr. G. C. Negi College of Veterinary 
				and Animal Sciences, Chaudhary Sarwan Kumar Himachal Pradesh 
				Krishi Vishvavidyalaya, Palampur - 176 062, Himachal Pradesh, 
				India; thakurprasen727779@gmail.com 
				
				Aneesh Thakur:
				
              
              Department of 
				Veterinary Microbiology, Dr. G. C. Negi College of Veterinary 
				and Animal Sciences, Chaudhary Sarwan Kumar Himachal Pradesh 
				Krishi Vishvavidyalaya, Palampur - 176 062, Himachal Pradesh, 
				India; aneesh.thakur@gmail.com 
				
				Vivek Sharma:
				
              
              Department of 
				Microbiology, College of Basic Sciences, Chaudhary Sarwan Kumar 
				Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176 062, 
				Himachal Pradesh, India; ankvivek@gmail.com 
				
				Mandeep Sharma:
				
              
              Department of 
				Veterinary Microbiology, Dr. G. C. Negi College of Veterinary 
				and Animal Sciences, Chaudhary Sarwan Kumar Himachal Pradesh 
				Krishi Vishvavidyalaya, Palampur - 176 062, Himachal Pradesh, 
				India; mandeepsharma289@gmail.com   
				
				Received: 25-05-2016, Accepted: 05-08-2016, Published online: 
				12-09-2016   
				
              	
              	Corresponding author: 
              	Prasenjit 
				Dhar, e-mail: thakurprasen727779@gmail.com 
 
              Citation: 
				
				Sharma S, Dhar P, Thakur A, Sharma V, Sharma M (2016) First 
				detection of canine parvovirus type 2b from diarrheic dogs in 
				Himachal Pradesh, Veterinary World, 9(9): 964-969. 
 
              
				Abstract 
 
				Aim: 
				The present 
				study was conducted to detect the presence of canine parvovirus 
				(CPV) among diarrheic dogs in Himachal Pradesh and to identify 
				the most prevalent antigenic variant of CPV based on molecular 
				typing and sequence analysis of VP2 gene.  
				Materials and 
				Methods: 
				A total of 102 
				fecal samples were collected from clinical cases of diarrhea or 
				hemorrhagic gastroenteritis from CPV vaccinated or 
				non-vaccinated dogs. Samples were tested using CPV-specific 
				polymerase chain reaction (PCR) targeting VP2 gene, multiplex 
				PCR for detection of CPV-2a and CPV-2b antigenic variants, and a 
				PCR for the detection of CPV-2c. CPV-2b isolate was cultured on 
				Madin-Darby canine kidney (MDCK) cell lines and sequenced using 
				VP2 structural protein gene. Multiple alignment and phylogenetic 
				analysis was done using ClustalW and MEGA6 and inferred using 
				the Neighbor-Joining method.  
				Results:
				No 
				sample was found positive for the original CPV strain usually 
				present in the vaccine. However, about 50% (52 out of 102) of 
				the samples were found to be positive with CPV-2ab PCR assay 
				that detects newer variants of CPV circulating in the field. In 
				addition, multiplex PCR assay that identifies both CPV-2ab and 
				CPV-2b revealed that CPV-2b was the major antigenic variant 
				present in the affected dogs. A PCR positive isolate of CPV-2b 
				was adapted to grow in MDCK cells and produced characteristic 
				cytopathic effect after 5th
				passage. Multiple sequence alignment of VP2 
				structural gene of CPV-2b isolate (Accession number HG004610) 
				used in the study was found to be similar to other sequenced 
				isolates in NCBI sequence database and showed 98-99% homology.
				 
				Conclusion:
				This 
				study reports the first detection of CPV-2b in dogs with 
				hemorrhagic gastroenteritis in Himachal Pradesh and absence of 
				other antigenic types of CPV. Further, CPV-specific PCR assay 
				can be used for rapid confirmation of circulating virus strains 
				under field conditions.  
				
				Keywords: 
				
				canine parvovirus, molecular typing, phylogenetic analysis, 
				sequencing. 
 
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