| 
              
              
              Open Access  
 
              
              
              
              Research 
              
              
(Published 
				online: 03-09-2016)  
              3. 
				
				
				Semi-quantitative digital analysis of 
				polymerase chain reactionelectrophoresis gel: Potential 
				applications in low-income veterinary laboratories -
				
				
				John F. Antiabong, Mafora G. Ngoepe and Adakole S. Abechi 
              
              Veterinary World, 9(9): 935-939   
              
   
                
                
doi: 
              
				
				10.14202/vetworld.2016.935-939 
                
				  
				
				John F. Antiabong: 
				
				Department of Molecular Microbiology, School of Biological 
				Sciences, Flinders University SA, Bedford Park, 5042, Australia; 
				Department of Applied Biotechnology, National Veterinary 
				Research Institute, Nigeria; negribj@hotmail.com 
				
				Mafora G. Ngoepe: 
				
				Onderstepoort Biological Products, Onderstepoort, Pretoria, 
				0110, South Africa; ngoepeg@yahoo.com 
				
				Adakole S. Abechi: 
				
				Department of Applied Biotechnology, National Veterinary 
				Research Institute, Nigeria; jamush2002@yahoo.com   
				
				Received: 09-03-2016, Accepted: 28-07-2016, Published online: 
				03-09-2016   
				
              	
              	Corresponding author: 
              	
				
				John F. Antiabong, e-mail: negribj@hotmail.com 
 
              Citation: 
				
				Antiabong JF, Ngoepe MG, Abechi AS (2016) Semiquantitative 
				digital analysis of polymerase chain reaction-electrophoresis 
				gel: Potential applications in low-income veterinary 
				laboratories, 
				
				Veterinary World, 9(9): 
				935-939. 
 
              
				Abstract 
 
				
				
				Aim: 
				
				The interpretation of conventional polymerase chain reaction (PCR) 
				assay results is often limited to either positive or negative 
				(non-detectable). The more robust quantitative PCR (qPCR) method 
				is mostly reserved for quantitation studies and not a readily 
				accessible technology in laboratories across developing nations. 
				The aim of this study was to evaluate a semi-quantitative method 
				for conventional PCR amplicons using digital image analysis of 
				electrophoretic gel. The potential applications are also 
				discussed. 
				
				
				Materials and Methods: 
				
				This study describes standard conditions for the digital image 
				analysis of PCR amplicons using the freely available ImageJ 
				software and confirmed using the qPCR assay. 
				
				
				Results and Conclusion: 
				
				Comparison of ImageJ analysis of PCR-electrophoresis gel and 
				qPCR methods showed similar trends in the 
				
				Fusobacterium necrophorum 
				
				DNA concentration associated with healthy and periodontal 
				disease infected wallabies (p≤0.03). Based on these empirical 
				data, this study adds descriptive attributes (“more” or “less”) 
				to the interpretation of conventional PCR results. The potential 
				applications in low-income veterinary laboratories are 
				suggested, and guidelines for the adoption of the method are 
				also highlighted. 
				
				Keywords: 
				
				applications, digital image analysis, ImageJ software, 
				polymerase chain reaction-electrophoresis, polymerase chain 
				reaction amplicon, quantitative polymerase chain reaction. 
 
              References 
 
				
					| 1. Nietfeld, J.C. (2010) Field necropsy techniques and 
					proper specimen submission for investigation of emerging 
					infectious diseases of food animals. Vet. Clin. North Am. 
					Food Anim. Pract., 26(1): 1-13. http://dx.doi.org/10.1016/j.cvfa.2009.10.005
 PMid:20117539
 |  
					|  |  
					| 2. Van Guilder, H.D., Vrana, K.E. and Freeman, W.M. (2008) 
					Twenty-five years of quantitative PCR for gene expression 
					analysis. Biotechniques, 44: 619. http://dx.doi.org/10.2144/000112776
 PMid:18474036
 |  
					|  |  
					| 3. Abramoff, M.D., Magelhaes, P.J. and Ram, S.J. (2004) 
					Image processing with Image. J. Biophotonics Int., 11: 
					36-42. |  
					|  |  
					| 4. Berchtold, C.M., Wu, Z.H., Huang, T.T. and Miyamoto, S. 
					(2007) Calcium-dependent regulation of NEMO nuclear export 
					in response to genotoxic stimuli. Mol. Cell. Biol., 27: 
					497-509. http://dx.doi.org/10.1128/MCB.01772-06
 PMid:17074802 PMCid:PMC1800799
 |  
					|  |  
					| 5. Rai, T., Mosoian, A. and Resh, M.D. (2010) Annexin 2 is 
					not required for human immunodeficiency virus Type 1 
					particle production but plays a cell type-dependent role in 
					regulating infectivity. J. Virol., 84: 9783-9792. http://dx.doi.org/10.1128/JVI.01584-09
 PMid:20631122 PMCid:PMC2937750
 |  
					|  |  
					| 6. Antiabong, J.F., Boardman, W., Smith, I., Brown, M.H., 
					Ball, A.S. and Goodman, A.E. (2013) A molecular survey of a 
					captive wallaby population for periodontopathogens and the 
					co-incidence of Fusobacterium necrophorum subspecies 
					necrophorum with periodontal diseases. Vet. Microbiol., 63: 
					335-343. http://dx.doi.org/10.1016/j.vetmic.2013.01.012
 PMid:23428381
 |  
					|  |  
					| 7. Schmittgen, T.D., Zakrajsek, B.A., Mills, A.G., Gorn, V., 
					Singer, M.J. and Reed, M.W. (2000) Quantitative reverse 
					transcription–polymerase chain reaction to study mRNA decay: 
					Comparison of endpoint and real-time methods. Anal. Biochem., 
					285: 194-204. http://dx.doi.org/10.1006/abio.2000.4753
 |  
					|  |  
					| 8. Cai, H.Y., Caswell, J.L. and Prescott, J. (2014) 
					Nonculture molecular techniques for diagnosis of bacterial 
					disease in animals a diagnostic laboratory perspective. Vet. 
					Pathol. Online, 51(2): 341-350. http://dx.doi.org/10.1177/0300985813511132
 PMid:24569613
 |  
					|  |  
					| 9. Sardelli, A.D. (1993) The plateau effect: Understanding 
					PCR limitations. Amplif. Forum PCR Users, 9: 1-5. |  
					|  |  
					| 10. McPherson, M.J., Hames, B.D. and Taylor, G.R. (1995) PCR: 
					A Practical Approach. IRL Press, Oxford. p1-22. |  
					|  |  
					| 11. Pfaffl, M.W. (2004) In: Bustin, S.A., editor. A-Z of 
					Quantitative PCR. International University Line, La Jolla. 
					p89-113. |  |