Age Correlated Histomorphological And Histochemical Studies On The Salivary Glands Of Indian Buffalo (Bubalus Bubalis)
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Date
2001
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Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana
Abstract
Histomorphochemical studies on the major salivary glands of buf falo f rom three age
groups viz., Neonatal (n=8), Prepubertal (n=8) and Adult (n=8) was conducted. The gland
was surrounded by a f ibrocellular capsule. The collagen f ibers were predominant with
reticular and elastic fibers. The adipose connective tissue, blood vessels and lymphatics
could be seen in capsule and stroma. The capsule and stroma become thicker with age.
The capsule and stroma of the Mandibular salivary gland contained ganglion. The
parenchyma in neonatal group of all major salivary glands was seromucous. In adult it
was changed to serous type in parotid, mixed in Mandibular and mucous in sublingual
salivary gland. The duct system comprised of intercalated, striated, interlobar and
excretory ducts, in all major salivary glands. The diameter of the ducts was increased with
age, with exception of excretory duct. The diameter of excretory duct had decreased with
age in Mandibular and sublingual salivary gland. The number of goblet cells increased
with diameter of the duct and was more in parotid salivary gland. The myoepithelial cells
were observed between, epithelial cells and basement membrane of acini and ducts, in all
salivary glands. Serous and mucous acini were strongly PAS/AB positive in neonate and
prepubertal age groups, but in adults serous acini were strongly positive and mucous
were weak to moderately positive for PAS. Sudanophilic lipid and basic protein content
was moderate to high in serous acinar cells but low in mucous acini. Acinar and ductular
epithelium was positive for AKPase, ACPase, ATPase, SDH, LDH, NADH dehydrogenase
and 17-13- HSD. The activity was found negligibly low in capsule and stroma. The nerve
terminal, fibers and ganglion were strongly positive for AchEase in all glands and age
groups.