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Research (Published online: 18-09-2016)

12. Histopathological and immunohistochemical approaches for the diagnosis of Pasteurellosis in swine population of Punjab - Payal Bhat, Nittin Dev Singh, Geeta Devi Leishangthem, Amninder Kaur, Vishal Mahajan, Harmanjit Singh Banga and Rajinder Singh Brar

Veterinary World, 9(9): 989-995

 

 

   doi: 10.14202/vetworld.2016.989-995

 

 

Payal Bhat: Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab, India; dr.payalbhat@gmail.com

Nittin Dev Singh: Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab, India; drndsingh@gmail.com

Geeta Devi Leishangthem: Animal Disease Research Centre, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana- 141 004, Punjab, India; drgeetapatho@gmail.com

Amninder Kaur: Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab, India; dramninder90@gmail.com

Vishal Mahajan: Animal Disease Research Centre, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana- 141 004, Punjab, India; mahajanv17@gmail.com

Harmanjit Singh Banga: Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab, India; bangahs3@yahoo.com

Rajinder Singh Brar: Department of Veterinary Pathology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab, India; rsbrar@email.com

 

Received: 02-03-2016, Accepted: 06-08-2016, Published online: 18-09-2016

 

Corresponding author: Nittin Dev Singh, e-mail: drndsingh@gmail.com


Citation: Bhat P, Singh ND, Leishangthem GD, Kaur A, Mahajan V, Banga HS, Brar RS (2016) Histopathological and immunohistochemical approaches for the diagnosis of Pasteurellosis in swine population of Punjab, Veterinary World, 9(9): 989-995.



Aim: Infectious porcine bronchopneumonia, caused by Pasteurella multocida, is a widespread disease of major economic significance. Thus, the aim of the present study was to diagnose swine Pasteurellosis using gross, histopathological, and immunopathological approaches in the swine population of Punjab and to compare the efficacy of immunohistochemical (IHC) techniques with conventional diagnostic techniques.

Materials and Methods: A total of 71 adult swine lung samples showing gross pneumonic changes were collected along with the associated lymph nodes to carry out the study. The collected samples were then processed for histopathological and IHC studies.

Results: Out of the total 71 lung samples, 26 samples were found to be suspected for Pasteurellosis as per the microscopic changes observed, and out of these 26 samples, 16 cases were confirmed to be positive for Pasteurellosis by IHC. Varied macroscopic changes noted in lungs were pneumonic patches with consolidation of many lobes, congestion, and focal hemorrhages. Main lesions associated with lymph nodes were its enlargement and hemorrhages. Histologically, the lung showed fibrinous and suppurative bronchopneumonia, multifocal suppuration, thickening of septa with fibrin combined with cellular infiltration and edema. The higher IHC expression of P. multocida was seen in the bronchial epithelium besides in alveolar and bronchial exudate. Moreover, on comparing the histopathological and IHC scores which were calculated on the basis of characteristic microscopic lesions and number of antigen positive cells, respectively, a significant positive correlation (r=0.4234) was found.

Conclusion: It was concluded that swine population of Punjab is having P. multocida infection. The gross and histopathological lesions can be helpful in the preliminary diagnosis of Pasteurellosis but needs to be supplemented by other immunodiagnostic tests. Moreover, IHC technique proved to be a specific, reliable, precise, and rapid technique to supplement these conventional methods of diagnosis for Pasteurellosis.

Keywords: histopathology, immunohistochemical, Pasteurellosis, scoring.



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