콜라겐 펩타이드 섭취 무모생쥐에서 UVB 조사에 의한 피부 손상에 미치는 효과 규명

국문 초록 (Abstract)

본 연구에서는 Tilapia fish에서 얻은 콜라겐 펩타이드 (TFCP)의 섭취가 UVB를 조사한 무모생쥐에서 어떠한 효과를 나타내는지 확인하고자 하였다. 무모생쥐에 1주일에 3번 UVB를 조사하여 광노화를 유도하였고, TFCP 545, 1090 mg/kg 을 매일 총 12주간 경구투여 후, 주름생성, 피부 두께, 홍반, 피부 수분량, 하이드록시프롤린, MMPs 및 filaggrin의 발현량을 측정하였다. UVB만 조사 한 군과 비교하여 UVB를 조사하고 콜라겐 펩타이드를 섭취시킨 군에서 주름생성, 피부 두께 및 홍반이 감소하였고 피부 수분량은 증가하였다. 또한, 콜라젠 양과 하이드록시프롤린의 양도 TFCP를 섭취한 군에서 UVB 조사군에 비해 유의하게 회복되는 것을 확인하였다. TFCP를 섭취한 군에서 자외선에 의해 활성화되는 MMP-2, MMP-9 뿐만 아니라 MMP-3, MMP-13의 mRNA 발현량이 억제됨을 확인하였고, filaggrin의 단백질 발현량도 증가하였다. 이러한 결과들을 통하여 TFCP의 섭취는 자외선에 의한 주름 생성을 억제하고 피부 손상을 회복시킨다는 것을 확인하였다. 따라서, TFCP는 피부미용식품 소재로서 활용 가능성이 있음을 알 수 있다.

다국어 초록 (Multilingual Abstract)

This study examined the effects of collagen peptide intake extracted from the tilapia fish (TFCP) on UVB-induced skin in hairless mice. To cause photoaging, the hairless mice were exposed to UVB irradiation three times a week and TFCP was administered with 545 and 1090 mg/kg once a day for 12 weeks. The level of wrinkle formation, thickness of the skin, acute erythema, skin hydration, amount of hydroxyproline, expression of MMPs and filaggrin were measured. Wrinkle formation, thickness of the skin, and acute erythema were significantly lower and skin hydration was higher in the TFCP intake group compared to the UVB-control mice group. In addition, the amount of the collagen and hydroxyproline of the collagen peptide intake group were much higher than the UVB-control group. Oral administration of TFCP inhibited the expression of the MMP-3 and MMP-13 mRNA level as well as activated MMP-2 and MMP-9 induced by UV irradiation, and increased the protein expression of filaggrin in hairless mice skin. In summary, the oral administration of TFCP can inhibit wrinkle formation and protect the skin from UV-damage. Therefore, this study suggests that TFCP is a potential candidate material for skin functional foods.

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