DERMATOPATHOLOGICAL STUDY OF BOVINE CUTANEOUS PAPILLOMATOSIS (WART) AND ITS MANAGEMENTAL APPROACHES

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2012-02

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HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR.

Abstract

Dermatopathological study of bovine cutaneous papillomatosis (wart) and its multidimensional therapeutic approaches was carried out at different regions of Dinajpur district. The course of the study was one year from March, 2011 to February, 2012 and the laboratory examination was done at Pathological Laboratory, Department of Pathology and Parasitology, HSTU. The animals submitted to the VTH-HSTU for diagnosis and treatment and treated during physical visit were considered as experimental animals. The total clinical cases were 886, among which only 12 cases were typically affected with papillomatosis. The clinical signs, gross morbid lesions, topographic position of lesions and the general health status of suspected animals were recorded. The skins of 3 typically papillomatosis affected animals were collected surgically with required precautions and normal skin from slaughter house were also collected, preserved, processed for histopathological study. Affected animals were divided into 4 groups (Group A, B, C, D) received autogenous vaccine, autohemotherapy, both autogenous vaccination and autohemotherapy and surgical excision, respectively. The animals were clinically characterized as poor health status, reduced productivity, grossly as pedunculated cauliflower like, sessile, pea or bean shaped and flat type of outgrowth over skin and histopathologically characterized by hyperkeratosis, acanthosis, hypergranulosis, downgrowth rete ridges and neoplastic cells islands. Among the four therapeutic groups, Group D shows better therapeutic response although having some limitations.

Description

Papillomatosis is a chronic proliferative disease, caused by a DNA viruses belonging to the family Papovaviridae (Fonner et al., 1974). Bovine papillomatosis is a common viral disease of the skin, mostly of young cattle, manifested as benign tumours or warts, caused by bovine papillomavirus (BPV) that has six serotypes hitherto described (Olson, 1990). Papillomaviruses are small (55 nm in diameter) non enveloped, icosahedral viruses, containing a double stranded, circular DNA genome about 8000 base pairs long. Bovine papillomatosis (warts) is a disease caused by host, site and lesion specific papillomaviruses (Nasir and Campo, 2008). They are classified as mucosotropic or cutaneotropic tropism (Souto et al., 2005).

Keywords

BOVINE CUTANEOUS PAPILLOMATOSIS, Taxonomic position of the oetiologic agent, Factors affecting for the development of lesion

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