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JKM > Volume 39(4); 2018 > Article
J Korean Med. 2018;39(4): 74-85.         doi: https://doi.org/10.13048/jkm.18036
Efficacy of Hataedock Treatments for Maintenance and Formation of Lipid Barrier in Obese NC/Nga Mice with Dermatophagoides Farinae-Induced Atopic Dermatitis
Hee-Yeon Kim1,4  , Sang-Hyun Ahn2  , In-Jun Yang3  , Jin-Hong Cheon1,4  , and Kibong Kim1,4 
1Department of Korean Pediatrics, School of Korean Medicine, Pusan National University, Pusandaehak-ro 49, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do 50612, Republic of Korea
2Department of Anatomy, College of Korean Medicine, Semyung University, Semyung-ro 65, Jecheon-si, Chungcheongbuk-do 27136, Republic of Korea
3Department of Physiology, College of Korean Medicine, Dongguk University, Dongdae-ro 123, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea
4Department of Korean Pediatrics, Korean Medicine Hospital, Pusan National University, Geumo-ro 20, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do 50612, Republic of Korea
Corresponding Author: Kibong Kim ,Tel: +82-55-360-5952, Fax: +82-55-360-5952, Email: kkb@pusan.ac.kr
Received: November 27, 2018;  Revised: December 12, 2018.  Accepted: December 12, 2018.
Objectives: HTD treatment is a traditional preventive therapy for neonatal inflammatory diseases such as AD. The aim of this study was to investigate the efficacy of HTD treatments for the maintenance and formation of lipid barrier in Dermatophagoides farina-induced obese NC/Nga mice.
Methods: 20 mg/kg of CRGR extracts as HTD treatments were orally administered to NC/Nga mice. To induce obesity, high fat diet was served. Dermatophagoides farina extracts was applied on the 4th-6th and 8th-10th weeks to induce AD-like skin lesions in NC/Nga mice. Changes of skin conditions in mice were observed by histochemistry and immunohistochemistry.
Results: The results showed that HTD treatments effectively maintained and formed the lipid barrier. In the experimental groups, restorations of Lass2 expression and distributions of filaggrin, involucrin, loricrin, ASM, and LXR means that HTD treatments maintained and generated the lipid barrier. In the dermal papillae, HTD treatments reduced PKC production accompanied by epidermis damage. Furthermore, levels of IL-4, and STAT6 was low. HTD treatment may be effective for preventing inflammation induced by Th2-skewed condition by suppressing the main pathway of Th2 differentiation.
Conclusions: HTD treatment alleviated the inflammatory damage in the skin tissues of the NC/Nga mice by maintaining the lipid barrier and suppressing Th2 differentiation.
Keywords: Hataedock | atopic dermatitis | NC/Nga obese mice | lipid barrier | Th2 differentiation
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