Browsing by Author "Kishore, P.V.S."
Now showing 1 - 5 of 5
Results Per Page
Sort Options
OtherItem Open Access Gastric Rupture in a Dog(TANUVAS, 2006-06) Rao, G.V. Sudhakar; Dange, R.B.; Kishore, P.V.S.; Balachandran, C.; Manohar, B. MuraliArticleItem Open Access Histochemistry of Phosphatases in the Epididymis of Ram During Postnatal Development(TANUVAS, Chennai, 2012-07) Kishore, P.V.S.; Ramesh, Geetha; Basha, Sabiha Hayath; TANUVASThe localization of phosphatases in the epididymis of Madras Red ram during postnatal development was studied. The alkaline phosphatase activity was weak in the preweaning and pre-pubertal periods but with the onset of puberty it was better observed, especially in the epididymal epithelium. In the ductus epididymidis, the activity in the epididymal tubules was greater than that in the inter-tubular area. Regional variations in the enzyme activity were observed in the different segments. The acid phosphatase activity changed during different stages of postnatal development. The weak activity in the preweaning and pre-pubertal periods changed to moderate and strong in the different regions, with the onset of puberty. The reaction in the different segments of the epididymidis was varied with respect to the basal and apical areas of the epithelium. The adenosine triphosphatase activity in the pre-weaning and pre-pubertal periods was weak. It changed to moderate and strong in the different regions, with onset of puberty. The activity in the epididymis was greater in the epididymal tubules than in the inter-tubular area. The activity in the cauda region of the epididymis was stronger compared to the moderate activity in the corpus and caput regions.ThesisItem Open Access Histological And Histochemical Studies On The Testis And It’s Duct System In Sheep (Ovis aries)(Tamil Nadu Veterinary and Animal Sciences University, 2006) Kishore, P.V.S.; TANUVAS; Ramesh, Geetha; Basha, Sabiha Hayath; Manohar, B. Murali; Kulasekar, KA systematic investigation on the post-natal histological development and histochemistry of the testis and its duct system was undertaken. The thirty-two Madras Red rams utilized for this study were divided into four age groups viz; pre- weaning (birth to 3 months), pre-pubertal (4 to 6 months), pubertal (7 to 9 months) and post-pubertal (10 to 12 months), each of which consisted of eight animals. The testis was a compound coiled tubular gland. At birth, the sex cords were smaller in size and solid without lumen. Between six and seven months of age, a well-developed lumen was observed. The sex cords were lined with small and large cells at birth. Sertoli cells and spermatogonia appeared at five months of age. The primary spermatocytes first appeared at the age of six months. From the end of the eighth month and at the ninth month of age, the round and elongated spermatids and the spermatozoa made their appearance. The ram lambs had attained puberty and were suitable for breeding from this age onwards.At birth, the interstitial tissue was closely packed and appeared to be predominant. The undifferentiated mesenchymal cells started its transformation at four months of age and mature Leydig cells were first observed during the fifth month of age. As age advanced, the tubular growth became predominant and the inter- tubular area decreased. The three regions of the epididymis consisted of six segments and showed regional differences. At birth, the epithelium was simple but as age advanced it became pseudostratified. The non-glandular portion of the ductus deferens was pseudostratified columnar from birth. Its terminal portion enlarged into an ampulla. In the ampullary region, at birth, the epithelium showed the branched folds and the lumen was irregular. The testis and its duct system showed a weak to moderate activity for neutral and acid mucopolysaccharides, glycogen and lipids in its different components, up to the pre-pubertal period. The reaction for lipids was weak up to the pre-pubertal period. The reaction became mild in the pre-pubertal period and thereafter was mild to moderate up to the maturity. The activity for phosphatases and dehydrogenases was weak in the pre-weaning and pre-pubertal periods, but with the onset of puberty, the enzyme activities were better developed.ArticleItem Open Access Postnatal Differentiation and Regional Histological Variations in the Ductus Epididymidis of Rams(TANUVAS, Chennai, 2012-05) Kishore, P.V.S.; Ramesh, Geetha; Basha, Sabiha Hayath; TANUVASThe caput, corpus and cauda regions of the ductus epididymidis consisted of six histological segments that showed regional variations. The postnatal differentiation of the different segments started from birth and progressed till maturity. The simple epithelium at birth gained progressive pseudostratification. Similarly, the appearance of stereocilia, different types of cells in the epithelium and the smooth muscle layers around the epididymal tubules progressed and at different periods of postnatal development, the typical adult characteristics were achieved. The diameter of the epididymal tubules also increased, as age advanced. The developmental progression was disto-proximal i.e., the postnatal differentiation started in the terminal segment and then ascended through the middle and initial segments. The progression in the increase in height of the epithelium was varied in the three regions, whereas the progression in the increase in the diameter of epididymal tubules was uniform.ArticleItem Open Access Postnatal Histochemical Study of the Ductus Deferens in the Ram(TANUVAS, Chennai, 2008-01) Kishore, P.V.S.; Ramesh, Geetha; Basha, Sabiha Hayath; TANUVASThe testis is an organ of lipid synthesis and catabolism. The testicular duct system is important for transportation, maturation and storage of sperms. The glands of the ampulla provide the first notable carbohydrate substrate to the semen (Pineda and Faulkner, 1980).