Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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The Effect of Lithospermum erythrorhizon Extracts in UVB-Irradiated Mouse Skin

자초(Lithospermum erythrorhizon) 추출물이 UVB로 조사된 생쥐 피부에 미치는 영향

  • Song, Seon-Young (Department of Skin and Beauty, Gwangju Health College University)
  • 송선영 (광주보건대학 피부미용과)
  • Published : 2008.09.30
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Abstract

This study was intended to identify the effectiveness of Lithospermum erythrorhizon in the UVB-irradiated mouse skin. The C57BL mice were divided into three groups; the control group, the UVB irradiated group(UVB group), and the group treated with Lithospermum erythrorhizon extracts after UVB irradiation(UVB+Le group). 10 mouses were collected and sacrificed at 24 hrs, 48 hrs, 72 hrs, 120 hrs, and 168 hrs, respectively. In the result, the transepidermal water loss (TEWL) was decreased the UVB+Le group than UVB groups by time. At the 168 hrs group was significantly lower(p<0.05). In the result, the melanin value was decreased in the UVB+Le group than UVB group, but meaningless(p>0.05). In the result of erythema index, the UVB+Le group was meaningfully lower at 24 hrs, 48 hrs, and 72 hrs group than UVB group(p<0.05). In the result of scanning electron micrograph observation, the UVB+Le group was allevited swelling than UVB group at the 24 hrs, formation of the scab at the 48 hrs, regular plate shap at the 72 hrs, new keratin observated at the 120 hrs partially, and fine fiber covered epidermis surface at the 168 hrs. In the result of transmission electron micrograph observation, the UVB+Le group was facilitation of increased lamellar bodies and reformation lamellar bodies than UVB group at the all groups. Almost all the structures were recovered at the 160 hrs group. In conclusion, Lithospermum erythrorhizon extracts may recovery on the UVB-irradiated mouse skin.

본 연구는 UVB 조사로 인해 손상된 피부에 있어서 자초추출물의 유효성을 검증하기 위해 시도되었다. 생후 6주령된 제모한 C57BL/6 마우스를 대상으로 대조군, UVB 조사군(UVB군), UVB조사 후 자초추출물처치군(UVB+Le군)으로 구분하여 24시간, 48시간, 72시간, 120시간, 168시간의 시간대별로 관찰하였다. 경표피수분손실량을 측정한 결과, UVB+Le군이 UVB군 보다 시간이 경과함에 따라 TEWL이 감소하였다. 특히 168시간군에서 유의하게 낮게 나타났다(p<0.05). 멜라닌 양 측정 결과, UVB+Le군이 UVB군 보다 낮게 나타났으나 통계학적으로 유의성은 없게 나타났다(p>0.05). 홍반 지수 측정 결과, UVB+Le group 24시간, 48시간, 72시간군에서 UVB group 보다 유의하게 낮게 나타났다(p<0.05). 주사전자현미경적 관찰 결과, UVB group 24시간군에서는 UVB group보다 팽윤현상이 완화되었다. 48시간군에서는 가피형성, 72시간군에서는 규칙적인 판상구조, 120시간군에서 새로운 각질세포 생성, 168시간군에서는 얇은 섬유망으로 덮혀 있는 것이 관찰되었다. 투과전자현미경적 관찰 결과, UVB+Le group은 층판소체의 증가와 층판소체의 재형성이 UVB group보다 모든 군에서 촉진되었다. 특히 165시간군에서는 지질이중막의 구조가 거의 회복되어졌다. 이상의 모든 실험결과를 통해 자초추출물이 UVB 조사로 손상된 생쥐 피부를 회복시키는 효과가 있는 것으로 사료된다.

Keywords

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