Tottori University

Tottori University Research Result Repository
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    ワガクニ ニオケル イリョウキカン ガタ ジュウギョウイン シエン プログラム ノ ガイキョウ ト ジッセン

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    1990 年以降,日本で過重労働による労災の発生・事件などが相次ぎ,従業員支援プログラム(Employee Assistance Program:以降 EAP と記載)が注目されるようになったことで,EAP が急速に普及したと言われている。EAP が提供するメンタルヘルスサービスには,様々な形態が見られる。その中でも医療機関を母体とする医療機関型 EAP は米国の EAP とは異なり,日本特有のサービス形態であると考えられる。しかし,わが国では医療機関型 EAP の機関は非常に少ない現状にある。そこで本稿では,医療機関型 EAP の特徴について概観し,今後さらに発展していくにあたり考えられる課題について検討した

    Exploration of Novel Metabolic Features Reflecting Statin Sensitivity in Lung Cancer Cells

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    Statins are cholesterol-lowering drugs often used for the treatment of dyslipidemia. Statins also exert anti-cancer effects by inhibiting hydroxymethylglutaryl-CoA reductase (HMGCR), a rate-limiting enzyme in cholesterol synthesis. We previously reported that the susceptibility to statin treatment differs among cancer cells and that functional E-cadherin expression on the plasma membrane could be a biomarker of statin sensitivity in cancer cells. However, the detailed qualitative and molecular differences between statin-sensitive and statin-resistant cancer cells remain unclear. Here, we explored novel parameters related to statin sensitivity by comparing gene expression profiles and metabolite contents between statin-sensitive and statin-resistant lung cancer cell lines. We found that the expression of most cholesterol synthesis genes was lower in the statin-sensitive cancer cell line, HOP-92, than in the statin-resistant cancer cell line, NCI-H322M. Moreover, HOP-92 cells originally exhibited lower levels of CoA and HMG-CoA. Additionally, atorvastatin decreased the mRNA expression of PANK2, a rate-limiting enzyme in CoA synthesis. Atorvastatin also reduced the mRNA levels of the cholesterol esterification enzyme SOAT1, which was consistent with a decrease in the ratio of cholesterol ester to total cholesterol in HOP-92 cells. Our data suggest that the cholesterol synthetic flow and CoA content may be limited in statin-sensitive cancer cells. We also suggest that CoA synthesis and cholesterol storage may fluctuate with atorvastatin treatment in statin-sensitive cancer cells

    モンゴル ソウゲン ノ ボクソウシュ 2シュ ニ オケル ヒショクゴ ノ サイセイチョウ

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    鳥取大学Tottori University博士(農学

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