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Article Publish Status: FREE
Abstract Title:

Topical application of Nexrutine inhibits ultraviolet B-induced cutaneous inflammatory responses in SKH-1 hairless mouse.

Abstract Source:

Photodermatol Photoimmunol Photomed. 2018 Jan ;34(1):82-90. Epub 2017 Oct 9. PMID: 28857273

Abstract Author(s):

Shamshad Alam, Anu Pal, Dhirendra Singh, Kausar Mahmood Ansari

Article Affiliation:

Shamshad Alam

Abstract:

BACKGROUND: Ultraviolet B (UVB) radiation is the major contributor to skin inflammation which leads to the development of skin cancer. Hence, in this study, we studied the effect of Nexrutine (NX) on UVB-induced cutaneous inflammation and its mediators.

METHODS: Ultraviolet absorption spectra of NX were measured by spectrophotometer. To conduct the photoprotective studies, SKH-1 hairless mice were topically treated with NX, 30 minutes before to the UVB (180 mJ/cm) exposure. Twenty hours of post-UVB irradiation, mouse skin was used for edema measurements, H&E staining, myeloperoxidase (MPO) activity, and estimation of plasma cytokines. In addition, expression levels of inflammatory cytokines, cyclooxygenase-2 (COX-2), and inducible nitric oxide synthase (iNOS) were also determined by Western blot analysis.

RESULTS: Nexrutine displayed absorbance over the UVB spectrum. NX significantly decreased the UVB-induced epidermal edema, skin thickness, leukocyte infiltration, number of the sunburn, and TUNEL-positive cells. NX treatment also decreased the number of mast cells, MPO activity, expression of pro-inflammatory cytokines, and inflammation mediator protein in mouse skin.

CONCLUSION: These results provide evidences that NX inhibits the UVB-induced cutaneous inflammatory responses in SKH-1 mouse skin.

Study Type : Animal Study

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Sayer Ji
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