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Exp Anim. 2019 Jun 26. doi: 10.1538/expanim.19-0017. [Epub ahead of print]

Oral supplementation of L-glutathione prevents UVB-induced melanogenesis and oxidative stress in BALB/c mice.

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Programme of Biomedical Science, Centre of Health & Applied Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia.


Dietary antioxidant supplements such as L-glutathione have gained considerable attention in dermatology and cosmeceutical fields. L-Glutathione possesses antiaging, antimelanogenic, antioxidant, and anticancer properties. This study aimed to investigate the inhibitory effects of L-glutathione on melanogenesis activity and oxidative stress in UVB-irradiated BALB/c mice. Eighteen female BALB/c mice were randomly divided into 3 groups: a control group (n=6), a group without UVB irradiation and L-glutathione administration; a UVB irradiated group (n=6), a group irradiated with a UVB dose of 250 mJ/cm2 for 3 minutes; and a treatment group (n=6), a group irradiated with UVB and treated with 100 mg/kg of L-glutathione by oral gavage. Treatment was given for 14 days, and UVB irradiation was given on days 9, 11, and 13. Oral L-glutathione significantly (p<0.05) reduced lipid peroxidation and elevated superoxide dismutase activity the and glutathione level. L-Glutathione also inhibited melanin content and tyrosinase activity significantly (p<0.05) as compared with the UVB-irradiated group. Histopathological examination also showed that L-glutathione reduced the deposition of melanin pigment in the basal layer of the epidermis as compared with that in UVB-irradiated mice. All in all, the present study demonstrated that L-glutathione has the potential to be developed as a photoprotection agent against UVB- induced oxidative stress and melanogenesis.


L-Glutathione; UVB; melanogenesis; oxidative stress; photoprotection

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