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INitial Steps of Insulin Action in Parotid Glands of Male Wistar Rats
Cell Biochemistry and Biophysics  (IF2.194),  Pub Date : 2021-08-03, DOI: 10.1007/s12013-021-01025-5
DeVito-Moraes, André Guaraci, Marques, Victor Di Donato, Caperuto, Luciana Chagas, Ibuki, Flavia Kazue, Nogueira, Fernando Neves, Francci, Carlos Eduardo, Carvalho, Carla Roberta de Oliveira

The parotid gland is the largest salivary gland. It produces watery saliva, rich in proteins (amylase, lysozymes, and antibodies). Due to the gland’s morphological cytoarchitecture composed of only serous acini, it contributes almost 50% of total salivary volume upon stimulation. It has been reported that the prevalence of saliva secretion impairments, periodontitis, delayed wound healing, and xerostomia increase in diabetic patients. Herein we evaluated the acute effects of insulin on insulin receptor phosphorylation status and its substrates IRS-1 and IRS-2 in the parotid glands of adult male Wistar rats, using Western blot analyses. We confirmed an acute effect of insulin on IR/IRS/PI3K/Akt and MAPK intracellular pathway activation in the parotid glands of male Wistar rats similar to the classical metabolic targets of the hormone, like the liver.