Developing an Atopic Dermatitis Model and the Effects of Actinidia Extract on Dermatitis in NC/Nga Mice

NC/Nga 마우스에서의 아토피피부염 모델 개발 및 피부염 병변에 대한 다래 추출물(Actinidia Extract)의 효과

Joo, Young-Hyun;Won, Chong-Hyun;Kim, Ji-Yun;Cho, Kwang-Hyun;Min, Kyung-Up;Kim, Kyu-Han
주영현;원종현;김지윤;조광현;민경업;김규한

  • Published : 20091000

Abstract

Background: Atopic dermatitis is a chronic itchy, inflammatory skin disease that usually relapses. Although the etiology of atopic dermatitis remains unclear, it has been shown that both Th1 and Th2 cytokines play pathogenic roles in the generation of atopic dermatitis. DA-9102 is a fraction from the Actinidia species and DA-9102 displays immune modulating activity for allergy related disease. Objective: We have developed the atopic dermatitis model of NC/Nga mice using DNCB and we examined whether DA-9102 suppresses the development of atopic dermatitis-like skin lesions on NC/Nga mice. Methods: NC/Nga mice were challenged with DNCB during 5 weeks to develop atopic dermatitis-like skin lesions. Daily DA-9102 or cyclosporine A or HPMC (control) were then given orally. The efficacy of DA-9102 in NC/Nga mice was judged by measurement of the skin lesion severity (a modified SCORAD score), the serum IgE and IgG2a levels and the cytokine levels (IFN-$\gamma$ and IL-4) from spleen cells cultured with ConA. Results: Atopic dermatitis-like lesions were developed on the NC/Nga mice by using topical DNCB. Oral administration of 100 mg/kg DA-9102 significantly suppressed the development of dermatitis, as was analyzed by a modified SCORAD score (p<0.01). The serum IgE level increased gradually with age, but treatment with DA-9102 suppressed the increment of the serum IgE level (p<0.01). The mean values of IFN-$\gamma$ in the NC/Nga mice of the DA-9102 group were lower than those of the control mice group (p<0.05). The mean values of IL-4 were undetectable in all the experimental groups. The serum IgG2a level were not significantly different among all the experimental groups. Conclusion: We successfully developed an atopic dermatitis model in NC/Nga mice. Based on our in in vitro data, we suggest that DA-9102 can be useful for the treatment of atopic dermatitis.

Keywords

References

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