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    DEHP에 노출된 아토피피부염 모델에서 홍삼 Crude Saponin의 TSLP 억제 효과

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    https://www.riss.kr/link?id=T17368398

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    다국어 초록 (Multilingual Abstract) kakao i 다국어 번역

    In this study, the protective effects of red ginseng-derived crude saponin (CS) on DEHP-exacerbated atopic dermatitis (AD) were evaluated using a DNCB-induced BALB/c mouse model. AD was induced by repeated topical application of DNCB and mice were then exposed to low-dose DEHP as an environmental adjuvant while CS was topically applied at three doses (5, 15, 50 mg/kg). Clinical severity scores, histopathological changes in the skin, organ indices, leukocyte profiles and serum allergy-related mediators were assessed.
    DEHP exposure aggravated DNCB-induced AD, as evidenced by increased erythema, edema, excoriation and scaling, together with significant epidermal and dermal thickening, elevated skin weight, spleen hypertrophy and enhanced infiltration and degranulation of mast cells and eosinophils. Serum histamine, IgE, IL-5 and TSLP levels were also increased and neutrophil and eosinophil proportions in peripheral blood were elevated, whereas lymphocyte proportions were decreased, indicating systemic Th2-skewed inflammatory activation. In contrast, CS treatment ameliorated these changes in a dose-dependent manner; particularly, the high-dose CS group showed marked reductions in clinical scores, skin and spleen indices, mast cell and eosinophil infiltration and degranulation, as well as significant decreases in serum histamine, IgE, IL-5 and TSLP, accompanied by normalization of neutrophil, eosinophil and lymphocyte distributions.
    These findings suggest that environmental exposure to DEHP acts as an immunodisruptive adjuvant that exacerbates AD by amplifying Th2-driven inflammation and mast cell-mediated allergic responses, while red ginseng crude saponin exerts protective effects by modulating systemic immune activation and local skin inflammation. Therefore, crude saponin may represent a promising natural topical immunomodulator for preventing or attenuating AD exacerbated by continuous exposure to environmental endocrine-disrupting chemicals such as DEHP.
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    In this study, the protective effects of red ginseng-derived crude saponin (CS) on DEHP-exacerbated atopic dermatitis (AD) were evaluated using a DNCB-induced BALB/c mouse model. AD was induced by repeated topical application of DNCB and mice were the...

    In this study, the protective effects of red ginseng-derived crude saponin (CS) on DEHP-exacerbated atopic dermatitis (AD) were evaluated using a DNCB-induced BALB/c mouse model. AD was induced by repeated topical application of DNCB and mice were then exposed to low-dose DEHP as an environmental adjuvant while CS was topically applied at three doses (5, 15, 50 mg/kg). Clinical severity scores, histopathological changes in the skin, organ indices, leukocyte profiles and serum allergy-related mediators were assessed.
    DEHP exposure aggravated DNCB-induced AD, as evidenced by increased erythema, edema, excoriation and scaling, together with significant epidermal and dermal thickening, elevated skin weight, spleen hypertrophy and enhanced infiltration and degranulation of mast cells and eosinophils. Serum histamine, IgE, IL-5 and TSLP levels were also increased and neutrophil and eosinophil proportions in peripheral blood were elevated, whereas lymphocyte proportions were decreased, indicating systemic Th2-skewed inflammatory activation. In contrast, CS treatment ameliorated these changes in a dose-dependent manner; particularly, the high-dose CS group showed marked reductions in clinical scores, skin and spleen indices, mast cell and eosinophil infiltration and degranulation, as well as significant decreases in serum histamine, IgE, IL-5 and TSLP, accompanied by normalization of neutrophil, eosinophil and lymphocyte distributions.
    These findings suggest that environmental exposure to DEHP acts as an immunodisruptive adjuvant that exacerbates AD by amplifying Th2-driven inflammation and mast cell-mediated allergic responses, while red ginseng crude saponin exerts protective effects by modulating systemic immune activation and local skin inflammation. Therefore, crude saponin may represent a promising natural topical immunomodulator for preventing or attenuating AD exacerbated by continuous exposure to environmental endocrine-disrupting chemicals such as DEHP.

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    목차 (Table of Contents)

    • 목 차 ⅰ
    • 표 목 차 ⅲ
    • 그림목차 ⅳ
    • Ⅰ. 서 론 1
    • 1. 연구의 배경 및 필요성 1
    • 목 차 ⅰ
    • 표 목 차 ⅲ
    • 그림목차 ⅳ
    • Ⅰ. 서 론 1
    • 1. 연구의 배경 및 필요성 1
    • 2. 연구의 목적 5
    • Ⅱ. 재료 및 방법 6
    • 1. 시험물질 6
    • 2. 실험동물 및 사육환경 8
    • 3. 아토피피부염 In vivo test 9
    • 1) 실험동물군 분리 및 아토피피부염 유발 9
    • 2) 상대 장기 무게 측정 11
    • 3) 피부 관능 평가 11
    • 4) 일반혈액학적 실험 11
    • 5) Hematoxylin & Eosin 염색(H&E) 11
    • 6) 비만세포 분포 관찰 12
    • 7) 혈청 내 IgE 및 Cytokine 측정 12
    • 8) 통계 처리 13
    • Ⅲ. 결 과 14
    • 1. 아토피피부염 유발 및 Crude saponin 도포에 따른 체중 변화 14
    • 2. 장기 상대 중량에 미치는 영향 17
    • 3. Crude saponin 도포에 따른 육안적 소견 변화 20
    • 4. Crude saponin 도포에 의한 피부 두께의 변화 23
    • 5. 아토피피부염 모델에서 급성기 염증에 따른 백혈구 수치 변화 26
    • 6. Crude saponin이 피부조직 내 호산구 침윤에 미치는 영향 29
    • 7. 피부조직 내 비만세포 발현 및 탈과립에 미치는 영향 32
    • 8. Crude saponin이 알레르기 유발 염증성 Cytokine 발현에 미치는 영향 36
    • Ⅳ. 고 찰 39
    • 1. 아토피피부염 유발 및 Crude saponin 도포에 따른 체중 변화 39
    • 2. Crude saponin이 아토피피부염 모델 동물의 장기 무게에 미치는 영향 40
    • 3. DEHP로 인한 조혈 장애 및 TSLP 활성에 대한 홍삼 조사포닌의 효과 41
    • 4. 홍삼 조사포닌 도포에 따른 조직으로의 염증 세포 침윤 조절 효과 44
    • 5. 홍삼 조사포닌 도포에 따른 면역글로불린 E 매게 아토피피부염 증상 악화에 대한 억제 효과 45
    • Ⅴ. 요약 및 결론 48
    • 참 고 문 헌 51
    • 영 문 초 록 58
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