RESUMO
The authors studied morphological, morphometric, and histochemically the mucosubstances and proteins in the salivary glands of the lizard Ameiva. Based on the results, the authors concluded: 1. The labial salivary gland is formed by small mucous and mucoserous glands; the sublingual gland by mucoserous cells. 2. Mucous cells show neutral and sulphated mucosubstances and sialic acid. Mucoserous cells of the labial gland show neutral mucosubstance, sialic acid, hyaluronic acid and protein radicals. Mucoserous cells of the sublingual gland show neutral mucosubstance, sialic acid and protein radicals. 3. The average values for acinar area were: 1,198.11 microns 2 for mucoserous acini and 2,105.95 microns 2 for mucous acini of the labial salivary gland. The average values for nucleus volume were: 47.41 microns 3 for mucoserous cells and 38.97 microns 4 for mucous cells. 4. The average values for acinar area and nuclear volume of the mucoserous cells of the subingual gland were respectively: 1,474.62 microns 2 and 67.77 microns 3.
Assuntos
Lagartos/anatomia & histologia , Glândulas Salivares/anatomia & histologia , Animais , Glândulas Salivares/análise , Glândulas Salivares/citologia , Glândulas Salivares/ultraestrutura , Proteínas e Peptídeos Salivares/análiseRESUMO
Hypervitaminosis A induces the following changes in the rat sublingual gland: smaller size acini with lower cells and smaller nuclei. The serous demilunes show smaller cells and nuclei. The striated ducts show smaller and disorganized cells with smaller nuclei. These data were confirmed by morphometric techniques.
Assuntos
Glândula Sublingual/efeitos dos fármacos , Vitamina A/efeitos adversos , Animais , Peso Corporal/efeitos dos fármacos , Masculino , Ratos , Glândula Sublingual/patologiaRESUMO
Hypervitaminosis A induces the following changes in the rat parotid gland: smaller size acini with lower cells and a smaller number of cytoplasmic granules, decreased acidophilia, and smaller nuclei. The striated ducts show smaller, disorganized cells with smaller nuclei, as well as increased secretion in their lumina. These data were confirmed by morphometric techniques.
Assuntos
Glândula Parótida/patologia , Vitamina A/farmacologia , Animais , Masculino , Glândula Parótida/citologia , Glândula Parótida/efeitos dos fármacos , RatosRESUMO
Daily administration of 200 I.U. vitamin A/gram body weight to rats, for a period of 10 days, causes generalized hypertrophy of the tongue muscles. The data were confirmed with morphometric techniques, consisting of increased cytoplasm and decreased nuclei and empty spaces, obtained by the Chalkley technique, nuclei of similar volume, obtained with the use of karyometry, and larger areas of cross-sections of muscle fibers.
