The Effect of γ-Aminobutyric Acid Intake on UVB- Induced Skin Damage in Hairless Mice
10.4062/biomolther.2023.085
- Author:
Hairu ZHAO
1
;
Bomi PARK
;
Min-Jung KIM
;
Seok-Hyun HWANG
;
Tae-Jong KIM
;
Seung-Un KIM
;
Iksun KWON
;
Jae Sung HWANG
Author Information
1. Department of Genetic & Biotechnology, Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin 17104, Republic of Korea
- Publication Type:Original Article
- From:Biomolecules & Therapeutics
2023;31(6):640-647
- CountryRepublic of Korea
- Language:English
-
Abstract:
The skin, the largest organ in the body, undergoes age-related changes influenced by both intrinsic and extrinsic factors. The primary external factor is photoaging which causes hyperpigmentation, uneven skin surface, deep wrinkles, and markedly enlarged capillaries. In the human dermis, it decreases fibroblast function, resulting in a lack of collagen structure and also decreases keratinocyte function, which compromises the strength of the protective barrier. In this study, we found that treatment with γ-aminobutyric acid (GABA) had no toxicity to skin fibroblasts and GABA enhanced their migration ability, which can accelerate skin wound healing. UVB radiation was found to significantly induce the production of matrix metalloproteinase 1 (MMP-1), but treatment with GABA resulted in the inhibition of MMP-1 production. We also investigated the enhancement of filaggrin and aquaporin 3 in keratinocytes after treatment with GABA, showing that GABA can effectively improve skin moisturization. In vivo experiments showed that oral administration of GABA significantly improved skin wrinkles and epidermal thickness. After the intake of GABA, there was a significant decrease observed in the increase of skin thickness measured by calipers and erythema. Additionally, the decrease in skin moisture and elasticity in hairless mice exposed to UVB radiation was also significantly restored. Overall, this study demonstrates the potential of GABA as functional food material for improving skin aging and moisturizing.
