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Suppressive Effects of Mesenchymal Stem Cells in Adipose Tissue on Allergic Contact Dermatitis
( Sota Kikuchi ),( Koichi Yanaba ),( Yoshimasa Nobeyama ),( Shigeharu Yabe ),( Masahiro Kiso ),( Hidehisa Saeki ),( Yayoi Tada ),( Hidemi Nakagawa ),( Hitoshi Okochi ) 대한피부과학회 2017 Annals of Dermatology Vol.29 No.4
Background: Allergic contact dermatitis (ACD), which is ac-celerated by interferon (IFN)-γ and suppressed by inter-leukin (IL)-10 as regulators, is generally self-limited after re-moval of the contact allergen. Adipose tissue-derived multi-potent mesenchymal stem cells (ASCs) potentially exert im-munomodulatory effects. Considering that subcutaneous adipose tissue is located close to the site of ACD and includes mesenchymal stem cells (MSCs), the MSCs in adipose tissue could contribute to the self-limiting course of ACD. Objective: The aims of the present study were to elucidate the effects of MSCs in adipose tissue on ACD and to examine any cyto-kine- mediated mechanisms involved. Methods: Ear thick-ness in a C57BL/6 mouse model of ACD using contact hyper-sensitivity (CHS) elicited by 2,4,6-trinitro-1-chlorobenzene was evaluated as a marker of inflammation level. Five and nine mice were injected with ASCs and phosphate-buffered saline (PBS), respectively. After ASC or PBS injection, re-al- time reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay were performed. Results: Histology showed that CHS was self-limited and ear thickness was suppressed by ASCs in a dose-dependent manner. IFN-γ expression in the elicited skin site and re-gional lymph nodes was significantly lower in ASC-treated mice than in control mice. IL-10 expression did not differ be-tween treated and control mice. The suppressive effects of ASCs on CHS response did not differ between IL-10 knock-out C57BL/6 mice and wild-type mice. Conclusion: The present findings suggest that MSCs in adipose tissue may contribute to the self-limiting course of ACD through de-creased expression of IFN-γ, but not through increased ex-pression of IL-10. (Ann Dermatol 29(4) 391∼399, 2017)
Inter-professional and inter-departmental alcoholism rehabilitation program
Masahiro Kikuchi,Naomi Matsutani,Ryota Ishihara,Masako Sugihara,Yuuki Mizuno,Chiyo Chiba,Takahiro Ohta,Eri Yamada,Sota Oguro,Yasuko Sato,Hiroki Bessho,Yoshinori Horie 대한간학회 2020 Clinical and Molecular Hepatology(대한간학회지) Vol.26 No.4
A 3-month alcoholism rehabilitation program at psychiatric hospitals is common in Japan for patients with alcohol use disorder (AUD). However, many AUD patients are often hospitalized for the treatment of digestive disorders due to alcohol-related liver diseases and pancreatitis. In this sense, AUD patients need to be better supported by professionals and departments in general hospitals. Here we analyzed the problems in alcohol-related medical care in Japan and examined the measures to be taken at general hospitals.