Gemigliptin Improves Salivary Gland Dysfunction in D-Galactose-Injected Aging Rats

Oral dryness is among the most common conditions experienced by the elderly. As saliva plays a crucial role in maintaining oral health and overall quality of life, the condition is increasingly taking its toll on a rapidly growing aging population. D-galactose (D-gal) stimulates their formation, whi...

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Published inPharmaceutics Vol. 16; no. 1; p. 35
Main Authors Jung, Woo Kwon, Park, Su-Bin, Yu, Hwa Young, Kim, Junghyun
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 26.12.2023
MDPI
Subjects
Age
Aging
Amylases
anti-glycation
Antioxidants
Apoptosis
Aquaporins
D-galactose
Diabetes
Ethylenediaminetetraacetic acid
Exocrine glands
Galactose
gemigliptin
hyposalivation
Laboratory animals
Monoclonal antibodies
Older people
Oxidative stress
Protein expression
Proteins
salivary hypofunction
Saxagliptin
Type 2 diabetes
Japan
United States > US
South Korea
anti-glycation
D-galactose
aging
gemigliptin
hyposalivation
salivary hypofunction
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Summary:Oral dryness is among the most common conditions experienced by the elderly. As saliva plays a crucial role in maintaining oral health and overall quality of life, the condition is increasingly taking its toll on a rapidly growing aging population. D-galactose (D-gal) stimulates their formation, which in turn cause oxidative stress and accelerate age-related decline in physical function. In this study, we observed a reduction in salivary secretion and amylase levels in aged rats injected with D-gal, confirming salivary gland dysfunction. Treatment with gemigliptin increased DPP-4 inhibition and GLP-1 levels in the salivary glands of aging rats and reduced the expression of AGEs and receptors for advanced glycation end products (RAGE). This effect was caused by the presence of additional reactive oxygen species (ROS) in the salivary glands of the examined rats. Gemigliptin's cytoprotective effect reduced amylase and mucin accumulation and increased AQP5 expression, which are important indicators of salivary gland function. In sum, gemigliptin was shown to improve D-gal-induced decline in the salivary gland function of aged rats through its anti-glycation and antioxidant activities. Gemigliptin shows promise as a treatment strategy for patients experiencing decreased salivary function associated with their advancing age.
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ISSN:1999-4923
1999-4923
DOI:10.3390/pharmaceutics16010035