Effects of Diabetes on Salivary Gland Protein Expression of Tetrahydrobiopterin and Nitric Oxide Synthesis and Function.

Journal of Periodontology
Cassandra R StewartPandu R R Gangula

Abstract

Xerostomia is defined as dry mouth resulting from a change in the amount or composition of saliva and is often a major oral health complication associated with diabetes mellitus (DM). Studies have shown that xerostomia is more common in females at the onset of DM. Evidence suggests that nitric oxide (NO) plays a critical role in healthy salivary gland function. However, the specific mechanisms by which NO regulates salivary gland function at the onset of DM have yet to be determined. This study has two aims: 1) to determine whether protein expression or dimerization of NO synthase enzymes (neuronal [nNOS] and endothelial [eNOS]) are altered in the onset of diabetic xerostomia; and 2) to determine whether the changes in nNOS/eNOS protein expression or dimerization are correlated with changes in NO cofactor tetrahydrobiopterin (BH4) biosynthetic enzymes (guanosine triphosphate cyclohydrolase-1 and dihydrofolate reductase). Functional and Western blot studies were performed in streptozotocin-induced and control Sprague-Dawley female rats with DM (type 1 [t1DM]) using standardized protocols. Confirmation of xerostomia was determined by increased water intake and decreased salivary flow rate. The results showed that in female rats w...Continue Reading

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Citations

Apr 4, 2017·Journal of Cellular Physiology·Marta GarbowskaAnna Zalewska
Jul 3, 2021·Journal of Molecular Histology·Malak FouaniAngelo Leone
Nov 16, 2021·Stem Cell Research & Therapy·Rasha H Al-SerwiGehan El-Akabawy

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