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China Surfactant Detergent & Cosmetics ›› 2022, Vol. 52 ›› Issue (4): 418-424.doi: 10.3969/j.issn.1001-1803.2022.04.011

• Development and application • Previous Articles     Next Articles

Mechanism of Citrus reticulata extract in relieving skin sensitivity

Zhou Lidan,Lu Yina*(),Liu Qing   

  1. Shanghai JAKA Biotech Co. Ltd, Shanghai 200241, China
  • Received:2021-07-15 Revised:2021-03-29 Online:2022-04-22 Published:2022-04-25
  • Contact: Yina Lu E-mail:inna@greaf.com.cn.

Abstract:

Citrus reticulata Tangerine) extract (CR) was prepared according to a proprietary process from immature citrus fruit and it was rich in flavonoids and alkaloids. To investigate the mechanism of CR in relieving skin sensitivity through transient receptor potential vanilloid 1 (TRPV1), TRPV1 over-expression cells, prostaglandin receptor 1(EP1) over-expression cells and neuroblast cells were prepared. A comparison between normal cells and TRPV1 over-expression cells showed that, capsaicin (CAP) and phenoxyethanol could increase the expression of interleukin 8, chemokine MCP-1 and prostaglandin E2 (PGE-2) by activating TRPV1 and decrease the migration rate of wound healing. However, the results showed that CR could significantly inhibit the overexpression of cytokines, especially for PGE-2, and could also promote the migration rate of wound healing. Furthermore, the PGE-2-EP1 signaling pathway was studied, and it was found that 0.5% volume fraction of CR could significantly inhibit the activation of luciferase induced by PGE-2 through its receptor EP1. Finally, it was verified on neuroblast cells, and it was found that 0.06%-0.25% volume fraction of CR could inhibit the extracellular Ca2+ influx induced by the activation of TRPV1 caused by CAP and phenoxyethanol, and then inhibit the signal transduction in skin sensitivity or skin irritation, and finally alleviate clinical symptoms such as heat, itching and pain. Therefore, through the control of the activation of TRPV1, CR can inhibit the secretion of nociceptive cytokines and the downstream signal transduction, promote skin barrier repair, and alleviate skin irritation and sensitivity caused by the external stimuli.

Key words: Citrus reticulata extract, sensitive skin, skin barrier repair

CLC Number: 

  • TQ658