Effect of eating on morphological changes in the sublingual gland of the sheep
1990
Punnipa Ariyakulkaln (Silpakorn Univ., Nakhon Pathom (Thailand). Faculty of Science. Dept. of Biology)
Effect of eating on morphological changes in the sheep sublingual gland has been studied. Paraffin sections either stained with H/E, AB(alcian blue, pH 2.5)/H/E, AB/PAS/H with or without diastase pretreatment were examined under light microscopy. The sheep sublingual gland is a heterocrine gland which consists of mucous tubulo-acini and serous demilunes. The resting gland which removed from the sheep that had been fasted for 20 hours showed the presence of secretory granules throughout the secretory endpieces, and the AB-positive/PAS-positive materials also found in some ductal lumen. The latter confirmed that the sheep sublingual gland secretes mucous saliva at rest. After eating for 1 & 4 hr, there was a marked dilation of acinar lumen with intense AB-positive materials in the apical region. Two-hours postprandially, the gland showed variable reaccumulation of secretory granules, especially strong AB-positive materials in the acinar cells and PAS-positive materials in demilunes. Eating caused marked morphological changes in the secretory endpieces following active secretion of sublingual saliva, as well as the evidence of resynthesis of secretory granules postprandially.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Kasetsart University