Morpho-Histometric Evaluations of Pre-Pubertal, Pubertal and Post-Pubertal Vesicular Gland of Indigenous Bulls of Bangladesh

Abstract

SUMMARY:The present observation was aimed to evaluate the gross and histometric parameters of the vesicular glands of indigenous bulls. Twenty-eight bulls of three age groups were selected from the local market: the pre pubertal group A (<1 year n=4), pubertal group B (1.5-2.5 years, n=16) and post pubertal or adult group C (above 3 years, n=8). The weight, length (anterio-posterior), width (latero-medial) and the thickness (dorso-ventral) of the both left and right vesicular glands were recorded separately after slaughter of each animal. The left and right vesicular gland shows significantly different (p<0.01), in weight and length in every group. Left vesicular glands were slightly higher than the right in all parameters. The lobules of the gland showed folded mucosa, lined with pseudostratified columnar epithelium. Three types of cells were identified in the epithelium containing A, B and C cell. Type A cells were tall columnar cells having distinct cell boundaries with the oval, round or elongated nucleus. Type B cells were located in the basal lamina having round or oval nucleus with indistinct cell boundaries. Type C cells were narrow columnar cells interspersed between A cells with darkly stained cytoplasm. Lamina propria consisted of loose connective tissue surrounded the alveoli, tubules and some solid end pieces. The numbers of secretory end pieces were variable. The diameters of luminated or non-luminated acini of the glandular end pieces and ducts were increased gradually and significantly (p<0.01) with the advancement of age. The epithelial height of the duct and alveoli were increased with the advancement of age, but no significantly differences among them. Tunica adventitia and muscularis grew with the advancement of age while the interstitial tissue shrunk equally. Above all parameters help to conclude that the vesicular glands of the pubertal indigenous bulls were more functional.

Seasonal variations in histomorphology and histochemistry of the prostate gland of buffalo bulls

“…The results showed that the distributions of glandular acini and ducts were variable throughout the length of the pelvic urethra. Similar to the present findings, glandular tissues were present in the dorsal wall of the cranial portion of the pelvic urethra, whereas the distribution was less than half of the pelvic urethra caudally [10]. On the contrary, the distribution of glandular units in the propria submucosa was more so in the lateral and ventral wall than the dorsal wall of the urethra in buffalo [4].…”

“…The ducts were lined by pseudostratified columnar epithelium, which transformed into a transitional type towards the urethral opening in rams [12]. However, the epithelial lining of the duct was mostly simple columnar or pseudostratified columnar epithelium in bulls [10]. The disseminate portion of the pelvic urethra was surrounded by a capsule made up of collagenous, elastic, reticular, and smooth muscle fibers, which was ensheathed by the urethralis muscle in buffalo [3,11].…”

Histological and histochemical observations of the prostate gland at resting and stimulating status in adult local Dog (Canis familiaris)

“…At this status, it has much glandular tissue, thin fibro muscular capsule, and thin interlobar connective tissue, surrounded by a fragile fibro muscular capsule that divides the parenchyma of the gland into numerous lobules. This result disagreed with previous results in indigenous bulls of Bangladesh by Adhikary et al (24). He mentioned that the capsule is composed of collagen and reticular connective tissue fibers.…”

“…This result was not parallel with the observation in a bull by Hasan and Hamza (14), who mentioned that it has variable size glandular lobules within the loose connective tissue of the urethra. In ram (Ovis aris) and buck (Cyprus hircus), the glandular tissue has welldeveloped alveoli, which lining by simple columnar epithelium and are characterized by the presence of round, oval nuclei (24). This difference may be due to the body of the prostate gland in a dog being well developed compared to the disseminating part, which leads to secretion being more in the body than the disseminating part.…”

Histological Features of the Accessory Sex Gland of Indigenous Tom cat (Felis catus)

“…This result was not coincided with (17) in boar who recorded that the prostate was lobulated tubule-alveolar type and has only the disseminated part because its glandular tissue distributed through the sub mucosal layer of pelvic urethra, the capsular septa were composed of collagen, reticular fibers and smooth muscles, the serous secretary end pieces and ducts were lined with cuboidal epithelium, while (18) mentioned that the prostate of rabbit was constituted by stroma and glandular acini. On the other hand, (19) in bull reported lobulated with marked the disseminate part. Also in bull the prostate was fibro-muscular gland and composed of tubule-lobulated structure, their alveoli were lined with simple cuboidal epithelium which reacted positively with PAS and alcian blue stains, in tomcat the main excretory ducts of prostate were opening in the pelvic urethra that lined with transional epithelium as well as mentioned by (20).…”