The Effects of a Hyaluronan Lotion with a Molecular Weight of around 50 - 110 kDa on the Aged Atrophic Skin

Asako Ito

Ookuma Hospital, Nagoya, Japan.

DOI: 10.4236/jcdsa.2014.43021                

Abstract

Background: Hyaluronic acids act upon keratinocytes via CD44 receptors and regulate proliferation and differentiation. Some cosmetic hyaluronan lotions manufactured based upon the fact are nowadays available. Aims: To evaluate a cosmetic hyaluronan lotion (Dr. Fukaya’s skin repair lotion or Hyaluprotect) from the viewpoint of anti-aging effects and to consider its mechanism. Patients/Methods: In ten healthy volunteers at the age over 60, immunohistochemical research of the biopsied skin was performed before and after the application of the hyaluronan lotion for two weeks. Results: Expression of PCNA in the lower epidermis increased in 8 of 10 subjects. Filaggrin expression of the upper epidermis increased in 6 subjects. 11βHSD1 decreased in 5 subjects and 11βHSD2 increased in 5 subjects. Conclusions: The proliferative and differentiative effects of the hyaluronan lotion upon keratinocytes were confirmed immunohistologically. There is a possibility that hyaluronic acids work through the regulation of corticosteroids by 11βHSD1 and 11βHSD2.

Keywords

Hyaluronic Acid, Anti-Aging, PCNA, Filaggrin, 11βHSD1, 11βHSD2, Atrophic Skin

Conflicts of Interest

The authors declare no conflicts of interest.

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