Journal
DIABETES OBESITY & METABOLISM
Volume 3, Issue 4, Pages 254-258Publisher
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1463-1326.2001.00118.x
Keywords
salivatin (salivary peptide P-C); saliva; patients with type 2 diabetes; xerostomia; streptozotocin; BALB/c mice
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Aim: Diabetic xerostomia is a typical syndrome in diabetic complication. We have reported that salivatin (salivary peptide P-C) derived from human saliva potentiates glucose-stimulated insulin release and inhibits arginine-stimulated glucagon release. The present study is aimed to Gain further evidence on the physiological role by investigating the diabetic state-induced change in the amount of salivatin. Methods: The amount of salivatin was measured in saliva taken from patients with type 2 diabetes with ELISA and with rabbit antiserum against human salivatin immunocytochemically in sections of parotid glands from streptozotocin-diabetic BALB/c mice. Results: The amount of salivatin after a meal was reduced by diabetes in both human saliva and in the serous secretory granule of mouse parotid gland acinar cells. Conclusions: The above results suggest that salivatin lowers hyperglycaemia after meal and sustains the normal blood glucose levels by incretin-like mechanisms. The function may be damaged by diabetes, and this in turn might make the diabetes worse.
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