4-Hexyl-1,3-phenylenediol, a nuclear factor-κB inhibitor, improves photodamaged skin and clinical signs of ageing in a double-blinded, randomized controlled trial

The British Journal of Dermatology
S KaurM D Southall

Abstract

The nuclear factor-κB (NF-κB) pathway is a key mediator of inflammation; however, few studies have examined the direct effects of NF-κB inhibition on the skin. To investigate NF-κB activity in cultured human fibroblasts and to investigate the effects of 4-hexyl-1,3-phenylenediol (an NF-κB inhibitor) on elastin and collagen gene expression in vitro and on the clinical appearance of photodamaged skin. The amount and activity of NF-κB in human fibroblasts obtained from donors (17-78 years old) was measured after transfection with a NF-κB reporter and a luciferase promoter system. The expression of extracellular matrix (ECM) genes was determined using quantitative polymerase chain reaction. Women with moderate skin photodamage were randomized to daily treatment with a topical lotion containing 4-hexyl-1,3-phenylenediol (n = 30) or vehicle (n = 29) for 8 weeks, with clinical assessments at baseline and weeks 2, 4 and 8. Fibroblasts obtained from donors older than 50 years had higher NF-κB activity compared with cells from younger donors; inhibition of the NF-κB pathway with 4-hexyl-1,3-phenylenediol enhanced the expression of ECM genes. In women, treatment for 8 weeks with 4-hexyl-1,3-phenylenediol significantly improved crow's feet...Continue Reading

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Jun 26, 2020·International Journal of Cosmetic Science·D MezaM D Southall

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