研究者詳細

顔写真

カ キンヨウ
何 欣蓉
Hsin Jung Ho
所属
高度教養教育・学生支援機構 教養教育院
職名
特任准教授(研究)
学位
  • 理学修士 (台湾台北医学大学)

  • 博士(農学) (東北大学)

研究分野 3

  • ライフサイエンス / 分子生物学 /

  • ライフサイエンス / 応用生物化学 /

  • ライフサイエンス / 食品科学 /

論文 43

  1. Extracellular Vesicle from Chlorella vulgaris Alleviates Hepatic Fibrosis in a Mouse Model of Metabolic Dysfunction-Associated Steatotic Liver Disease Through Modulation of Inflammatory Signaling

    Hinata Harada, Yusuke Ohsaki, Afifah Zahra Agista, Hsin-Jung Ho, Takuo Hirose, Kotaro Yamada, Mutsumi Furukawa, Tomonori Nochi, Wan-Chun Chiu, Ya-Ling Chen, Chiu-Li Yeh, Suh-Ching Yang, Takefumi Mori, Hitoshi Shirakawa

    International Journal of Molecular Sciences 2026年4月22日

    DOI: 10.3390/ijms27093735  

  2. Effect of Vitamin K Supplementation on Testosterone Production in a Rat Model of Late-Onset Hypogonadism

    Rui Murakami, Yusuke Ohsaki, Hikaru Ito, Hsin-Jung Ho, Afifah Zahra Agista, Yi-Fen Chiang, Ya-Ling Chen, Masamitsu Maekawa, Takuo Hirose, Kenshiro Hara, Wan-Chun Chiu, Chiu-Li Yeh, Shih-Min Hsia, Suh-Ching Yang, Nariyasu Mano, Takefumi Mori, Hitoshi Shirakawa

    Foods 2026年3月18日

    DOI: 10.3390/foods15061070  

  3. Lysophosphatidylethanolamine Degradation Associated with Upregulation of Pnpla6/7 in a Murine Model of Metabolic Dysfunction-Associated Steatohepatitis

    Nao Inoue, Hsin-Jung Ho, Siddabasave Gowda B. Gowda, Miki Eguchi, Minato Masamura-Takeuchi, Hitoshi Chiba, Shu-Ping Hui

    International Journal of Molecular Sciences 2026年2月15日

    DOI: 10.3390/ijms27041869  

  4. Effects of Yomogi Tea on Lipid Metabolism in Renal Tubular HK-2 Cells

    Wei Qin, Hsin-Jung Ho, Xun-Zhi Wu, Miki Eguchi, Manami Uchita, Minato Takeuchi, Shu-Ping Hui

    Foods 2025年11月7日

    DOI: 10.3390/foods14223817  

  5. マガキ由来抗酸化物質DHMBAの糖尿病性腎症の進行抑制効果

    何 欣蓉, 江口 美祈, 呉 訓智, 正村 美音, 櫻井 俊宏, 千葉 仁志, 渡辺 秀明, 渡辺 貢, 惠 淑萍

    日本未病学会学術総会抄録集 32回 jma32002-00056 2025年11月

    出版者・発行元: (一社)日本未病学会

  6. Vitamin K2 Attenuates Mitochondrial Damage in Renal Proximal Tubular Cells

    Hsinjung Ho, Natsumi Aoki, Miki Eguchi, Mingchen Gao, Hirotaka Suzuki, Mao Mikami, Hitoshi Chiba, Shu-Ping Hui

    Journal of Agricultural and Food Chemistry 2025年9月3日

    DOI: 10.1021/acs.jafc.5c01320  

  7. 慢性腎臓病に対して有用な乳酸菌の探索と作用機序の解明

    野口 雄司, 豊原 敬文, 何 欣蓉, 鯨井 涼太, 渡邉 駿, 菊地 晃一, 鈴木 千登世, 曽我 朋義, 田中 哲洋, 阿部 高明

    日本腎臓学会誌 67 (4) 478-478 2025年6月

    出版者・発行元: (一社)日本腎臓学会

    ISSN:0385-2385

    eISSN:1884-0728

  8. ヒト腎尿細管細胞の脂質毒性と糖毒性におけるメナキノン-4の保護効果

    何 欣蓉, 江口 美祈, 惠 淑萍

    日本栄養・食糧学会大会講演要旨集 79回 196-196 2025年4月

    出版者・発行元: (公社)日本栄養・食糧学会

  9. Hypoglycemia and hyperinsulinemia induced by phenolic uremic toxins in CKD and DKD patients

    Yoshiyasu Tongu, Tomoko Kasahara, Yasutoshi Akiyama, Hsin-Jung Ho, Yotaro Matsumoto, Ryota Kujirai, Koichi Kikuchi, Koji Nata, Makoto Kanzaki, Kenshin Suzuki, Shun Watanabe, Takafumi Toyohara, Takehiro Suzuki, Chiharu Kawabe, Chitose Suzuki, Tetsuhiro Tanaka, Jun Wada, Yoshihisa Tomioka, Takaaki ABE

    2024年3月4日

    出版者・発行元: Research Square Platform LLC

    DOI: 10.21203/rs.3.rs-3963882/v1  

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    Abstract Patients with end-stage renal disease have lower fasting plasma glucose and HbA1c levels, with significantly higher insulin levels. For a long time, it has been believed that this higher insulin level in renal failure is due to decreased insulin clearance caused by reduced renal function. However, here we reported that accumulation of the gut microbiota-derived uremic toxin, phenyl sulfate (PS) in the renal failure, increased insulin secretion from the pancreas by enhanced glucose-induced insulin secretion. Other endogenous sulfides compounds which accumulated as in the renal failure also increased glucose-induced insulin secretion form b-cells. In addition, we also found that PS increased insulin resistance through lncRNA expression and Erk1/2 phosphorylation in the adipocytes. To confirm the relationship between PS and glucose metabolism in human, we recruited 2 clinical cohort studies (DKD and CKD), and found that here was a weak negative correlation between PS and HbA1c. Because these trials did not collect fasting insulin level, we alternatively used the urinary C-peptide/creatinine ratio (UCPCR) as an indicator of insulin resistance. We found that PS-induced insulin resistance in patients with eGFR < 60 ml/min/1.73 m2. These data suggest that the accumulation of uremic toxins modulates glucose metabolism and induced insulin resistance in CKD and DKD patients.

  10. Kaempferol Improves Cardiolipin and ATP in Hepatic Cells: A Cellular Model Perspective in the Context of Metabolic Dysfunction-Associated Steatotic Liver Disease

    Sakurai, A., Sakurai, T., Ho, H.-J., Chiba, H., Hui, S.-P.

    Nutrients 16 (4) 2024年2月11日

    DOI: 10.3390/nu16040508  

    ISSN:2072-6643

  11. フラジンはミトコンドリア動態の改善を介して酸化ストレスからヒト腎臓細胞を保護する(Flazin protects human kidney cells against oxidative stress via improving mitochondrial dynamics.)

    呉 訓智, 何 欣蓉, 江口 美祈, 陳 震, 千葉 仁志, 惠 淑萍

    日本未病学会学術総会抄録集 30回 49-49 2023年12月

    出版者・発行元: (一社)日本未病学会

  12. マガキ由来抗酸化物質DHMBAのフェロトーシス細胞死における保護作用

    江口 美祈, 何 欣蓉, 呉 訓智, 青木 菜摘, 千葉 仁志, 渡辺 秀明, 渡辺 貢, 惠 淑萍

    日本未病学会学術総会抄録集 30回 50-50 2023年12月

    出版者・発行元: (一社)日本未病学会

  13. Flazin improves mitochondrial dynamics in renal tubular epithelial cells under oxidative stress

    Wu, X.-Z., Ho, H.-J., Eguchi, M., Chen, Z., Chiba, H., Hui, S.-P.

    Food Bioscience 56 2023年12月

    DOI: 10.1016/j.fbio.2023.103378  

    ISSN:2212-4292 2212-4306

  14. Improving effect of flazin on mitochondrial quality and function in human HK-2 cells(タイトル和訳中)

    呉 訓智, 何 欣蓉, 江口 美祈, 千葉 仁志, 惠 淑萍

    臨床化学 52 (Suppl.1) 177-177 2023年10月

    出版者・発行元: (一社)日本臨床化学会

    ISSN:0370-5633

    eISSN:2187-4077

  15. A Pacific Oyster-Derived Antioxidant, DHMBA, Protects Renal Tubular HK-2 Cells against Oxidative Stress via Reduction of Mitochondrial ROS Production and Fragmentation. 国際誌 査読有り

    Hsin-Jung Ho, Natsumi Aoki, Yi-Jou Wu, Ming-Chen Gao, Karin Sekine, Toshihiro Sakurai, Hitoshi Chiba, Hideaki Watanabe, Mitsugu Watanabe, Shu-Ping Hui

    International journal of molecular sciences 24 (12) 2023年6月13日

    DOI: 10.3390/ijms241210061  

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    The kidney contains numerous mitochondria in proximal tubular cells that provide energy for tubular secretion and reabsorption. Mitochondrial injury and consequent excessive reactive oxygen species (ROS) production can cause tubular damage and play a major role in the pathogenesis of kidney diseases, including diabetic nephropathy. Accordingly, bioactive compounds that protect the renal tubular mitochondria from ROS are desirable. Here, we aimed to report 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA), isolated from the Pacific oyster (Crassostrea gigas) as a potentially useful compound. In human renal tubular HK-2 cells, DHMBA significantly mitigated the cytotoxicity induced by the ROS inducer L-buthionine-(S, R)-sulfoximine (BSO). DHMBA reduced the mitochondrial ROS production and subsequently regulated mitochondrial homeostasis, including mitochondrial biogenesis, fusion/fission balance, and mitophagy; DHMBA also enhanced mitochondrial respiration in BSO-treated cells. These findings highlight the potential of DHMBA to protect renal tubular mitochondrial function against oxidative stress.

  16. Elobixibat投与マウスにおける胆汁酸および腸内細菌叢の検討

    蓑輪 圭太, 秋山 由雅子, 笠原 朋子, 何 欣蓉, 前川 正充, 菊池 晃一, 豊原 敬文, 鈴木 健弘, 鈴木 千登世, 鯨井 涼太, 松本 洋太郎, 富岡 佳久, 阿部 高明

    日本腎臓学会誌 65 (3) 294-294 2023年5月

    出版者・発行元: (一社)日本腎臓学会

    ISSN:0385-2385

    eISSN:1884-0728

  17. メナキノン-4による腎尿細管細胞のミトコンドリア保護作用

    江口 美祈, 何 欣蓉, 青木 菜摘, 高明 晨, 鈴木 拓貴, 千葉 仁志, 惠 淑萍

    ビタミン 97 (4) 217-217 2023年4月

    出版者・発行元: (公社)日本ビタミン学会

    ISSN:0006-386X

  18. フラジンはヒト尿細管HK-2細胞における脂肪酸を介した脂質毒性を抑制する(Flazin attenuates fatty acid mediated lipotoxicity in human tubular HK-2 cells)

    呉 訓智, 何 欣蓉, 陳 震, 陳 一凡, 沈 テン秋, 千葉 仁志, 惠 淑萍

    日本栄養・食糧学会大会講演要旨集 77回 173-173 2023年3月

    出版者・発行元: (公社)日本栄養・食糧学会

  19. ビタミンKによる腎尿細管細胞のミトコンドリア保護効果

    江口 美祈, 何 欣蓉, 青木 菜摘, 高 明晨, 鈴木 拓貴, 千葉 仁志, 惠 淑萍

    日本栄養・食糧学会大会講演要旨集 77回 302-302 2023年3月

    出版者・発行元: (公社)日本栄養・食糧学会

  20. Oxidative Stress and Mitochondrial Dysfunction in Chronic Kidney Disease 招待有り 査読有り

    Hsin-Jung Ho, Hitoshi Shirakawa

    Cells 12 (1) 2022年12月

    DOI: 10.3390/cells12010088  

    eISSN:2073-4409

  21. Biotin Enhances Testosterone Production in Mice and Their Testis-Derived Cells 国際誌 査読有り

    Kota Shiozawa, Misato Maeda, Hsin-Jung Ho, Tomoko Katsurai, Md. Zakir Hossain Howlader, Kimiko Horiuchi, Yumi Sugita, Yusuke Ohsaki, Afifah Zahra Agista, Tomoko Goto, Michio Komai, Hitoshi Shirakawa

    Nutrients 14 (22) 4761-4761 2022年11月10日

    出版者・発行元: MDPI AG

    DOI: 10.3390/nu14224761  

    eISSN:2072-6643

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    Late-onset hypogonadism, a male age-related syndrome characterized by a decline in testosterone production in the testes, is commonly treated with testosterone replacement therapy, which has adverse side effects. Therefore, an alternative treatment is highly sought. Supplementation of a high dosage of biotin, a water-soluble vitamin that functions as a coenzyme for carboxylases involved in carbohydrate, lipid, and amino acid metabolism, has been shown to influence testis functions. However, the involvement of biotin in testis steroidogenesis has not been well clarified. In this study, we examined the effect of biotin on testosterone levels in mice and testis-derived cells. In mice, intraperitoneal treatment with biotin (1.5 mg/kg body weight) enhanced testosterone levels in the serum and testes, without elevating serum levels of pituitary luteinizing hormone. To investigate the mechanism in which biotin increased the testosterone level, mice testis-derived I-10 cells were used. The cells treated with biotin increased testosterone production in a dose- and time-dependent manner. Biotin treatment elevated intracellular cyclic adenosine monophosphate levels via adenylate cyclase activation, followed by the activation of protein kinase A and testosterone production. These results suggest that biotin may have the potential to improve age-related male syndromes associated with declining testosterone production.

  22. マガキ由来抗酸化物質DHMBAの腎臓尿細管細胞における抗酸化作用

    何 欣蓉, 関根 かりん, 青木 菜摘, 櫻井 俊宏, 千葉 仁志, 渡辺 秀明, 渡辺 貢, 惠 淑萍

    日本未病学会学術総会抄録集 29回 73-73 2022年10月

    出版者・発行元: (一社)日本未病学会

  23. SGLT-1-specific inhibition ameliorates renal failure and alters the gut microbial community in mice with adenine-induced renal failure. 国際誌 査読有り

    Hsin-Jung Ho, Koichi Kikuchi, Daiki Oikawa, Shun Watanabe, Yoshitomi Kanemitsu, Daisuke Saigusa, Ryota Kujirai, Wakako Ikeda-Ohtsubo, Mariko Ichijo, Yukako Akiyama, Yuichi Aoki, Eikan Mishima, Yoshiaki Ogata, Yoshitsugu Oikawa, Tetsuro Matsuhashi, Takafumi Toyohara, Chitose Suzuki, Takehiro Suzuki, Nariyasu Mano, Yoshiteru Kagawa, Yuji Owada, Takane Katayama, Toru Nakayama, Yoshihisa Tomioka, Takaaki Abe

    Physiological reports 9 (24) e15092 2021年12月

    DOI: 10.14814/phy2.15092  

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    Sodium-dependent glucose cotransporters (SGLTs) have attracted considerable attention as new targets for type 2 diabetes mellitus. In the kidney, SGLT2 is the major glucose uptake transporter in the proximal tubules, and inhibition of SGLT2 in the proximal tubules shows renoprotective effects. On the other hand, SGLT1 plays a role in glucose absorption from the gastrointestinal tract, and the relationship between SGLT1 inhibition in the gut and renal function remains unclear. Here, we examined the effect of SGL5213, a novel and potent intestinal SGLT1 inhibitor, in a renal failure (RF) model. SGL5213 improved renal function and reduced gut-derived uremic toxins (phenyl sulfate and trimethylamine-N-oxide) in an adenine-induced RF model. Histological analysis revealed that SGL5213 ameliorated renal fibrosis and inflammation. SGL5213 also reduced gut inflammation and fibrosis in the ileum, which is a primary target of SGL5213. Examination of the gut microbiota community revealed that the Firmicutes/Bacteroidetes ratio, which suggests gut dysbiosis, was increased in RF and SGL5213 rebalanced the ratio by increasing Bacteroidetes and reducing Firmicutes. At the genus level, Allobaculum (a major component of Erysipelotrichaceae) was significantly increased in the RF group, and this increase was canceled by SGL5213. We also measured the effect of SGL5213 on bacterial phenol-producing enzymes that catalyze tyrosine into phenol, following the reduction of phenyl sulfate, which is a novel marker and a therapeutic target for diabetic kidney disease DKD. We found that the enzyme inhibition was less potent, suggesting that the change in the microbial community and the reduction of uremic toxins may be related to the renoprotective effect of SGL5213. Because SGL5213 is a low-absorbable SGLT1 inhibitor, these data suggest that the gastrointestinal inhibition of SGLT1 is also a target for chronic kidney diseases.

  24. 酸化ストレス誘導下HK-2細胞におけるDHMBAによるカルジオリピンの組成変化に関する研究(Alteration of cardiolipin profile in HK-2 proximal tubule cells under oxidative stress and the reverse effects of 3,5-dihydroxy-4-methoxybenzyl alcohol(DHMBA))

    呉 亦柔, 何 欣蓉, 陳 震, 賈 佳萍, 青木 菜摘, 千葉 仁志, 渡辺 孝之, 渡辺 貢, 惠 淑萍

    JSBMS Letters 46 (Suppl.) 106-106 2021年8月

    出版者・発行元: (一社)日本医用マススペクトル学会

    ISSN:1881-5464

  25. Cysteine Sulfoxides Enhance Steroid Hormone Production via Activation of the Protein Kinase A Pathway in Testis-Derived I-10 Tumor Cells. 国際誌 査読有り

    Yuya Nakayama, Hsin-Jung Ho, Miki Yamagishi, Hiroyuki Ikemoto, Michio Komai, Hitoshi Shirakawa

    Molecules (Basel, Switzerland) 25 (20) 2020年10月14日

    DOI: 10.3390/molecules25204694  

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    Testosterone plays an important role in male sexual characteristics and maturation, and decreased testosterone levels increase the risk of several diseases. Recently, onion extract rich in cysteine sulfoxides, which are amino acids unique to onions, has been reported to alleviate age-related symptoms resulting from decreased testosterone levels in males. However, the mechanism underlying the suppression of low testosterone levels by cysteine sulfoxides has not been elucidated. In this study, we found that onion extract containing cysteine sulfoxides enhanced progesterone, a precursor of testosterone, in mouse testis-derived I-10 tumor cells. Furthermore, cysteine sulfoxides activated protein kinase A (PKA) and cyclic adenosine monophosphate response element-binding protein, which are key factors in steroidogenesis. These results suggest that cysteine sulfoxides enhance steroid hormone production via activation of the PKA signaling pathway.

  26. Beneficial Effects of Vitamin K Status on Glycemic Regulation and Diabetes Mellitus: A Mini-Review. 国際誌 査読有り

    Hsin-Jung Ho, Michio Komai, Hitoshi Shirakawa

    Nutrients 12 (8) 2020年8月18日

    DOI: 10.3390/nu12082485  

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    Type 2 diabetes mellitus is a chronic disease that is characterized by hyperglycemia, insulin resistance, and dysfunctional insulin secretion. Glycemic control remains a crucial contributor to the progression of type 2 diabetes mellitus as well as the prevention or delay in the onset of diabetes-related complications. Vitamin K is a fat-soluble vitamin that plays an important role in the regulation of the glycemic status. Supplementation of vitamin K may reduce the risk of diabetes mellitus and improve insulin sensitivity. This mini-review summarizes the recent insights into the beneficial effects of vitamin K and its possible mechanism of action on insulin sensitivity and glycemic status, thereby suppressing the progression of diabetes mellitus.

  27. The guanylate cyclase C agonist linaclotide ameliorates the gut-cardio-renal axis in an adenine-induced mouse model of chronic kidney disease. 国際誌 査読有り

    Fumika Nanto-Hara, Yoshitomi Kanemitsu, Shinji Fukuda, Koichi Kikuchi, Kei Asaji, Daisuke Saigusa, Tomoyuki Iwasaki, Hsin-Jung Ho, Eikan Mishima, Takehiro Suzuki, Chitose Suzuki, Tomoya Tsukimi, Tetsuro Matsuhashi, Yoshitsugu Oikawa, Yukako Akiyama, Shigeo Kure, Yuji Owada, Yoshihisa Tomioka, Tomoyoshi Soga, Sadayoshi Ito, Takaaki Abe

    Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 35 (2) 250-264 2020年2月1日

    DOI: 10.1093/ndt/gfz126  

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    BACKGROUND: Cardiorenal syndrome is a major cause of mortality in patients with chronic kidney disease (CKD). However, the involvement of detrimental humoral mediators in the pathogenesis of cardiorenal syndrome is still controversial. Trimethylamine-N-oxide (TMAO), a hepatic metabolic product of trimethylamine generated from dietary phosphatidylcholine or carnitine derived by the gut microbiota, has been linked directly with progression of cardiovascular disease and renal dysfunction. Thus, targeting TMAO may be a novel strategy for the prevention of cardiovascular disease and chronic kidney disease. METHODS: Linaclotide, a guanylate cyclase C agonist, was administered to adenine-induced renal failure (RF) mice and changes in renal function and levels of gut-derived uremic toxins, as well as the gut microbiota community, were analyzed using metabolomic and metagenomic methods to reveal its cardiorenal effect. RESULTS: Linaclotide decreased the plasma levels of TMAO at a clinically used low dose of 10 μg/kg in the adenine-induced RF mouse model. At a high concentration of 100 μg/kg, linaclotide clearly improved renal function and reduced the levels of various uremic toxins. A reduction in TMAO levels following linaclotide treatment was also observed in a choline-fed pro-atherosclerotic model. Linaclotide ameliorated renal inflammation and fibrosis and cardiac fibrosis, as well as decreased the expression of collagen I, transforming growth factor-β, galectin-3 (Gal-3) and ST2 genes. Plasma levels of Gal-3 and ST2 were also reduced. Because exposure of cardiomyocytes to TMAO increased fibronectin expression, these data suggest that linaclotide reduced the levels of TMAO and various uremic toxins and may result in not only renal, but also cardiac, fibrosis. F4/80-positive macrophages were abundant in small intestinal crypts in RF mice, and this increased expression was decreased by linaclotide. Reduced colonic claudin-1 levels were also restored by linaclotide, suggesting that linaclotide ameliorated the 'leaky gut' in RF mice. Metagenomic analysis revealed that the microbial order Clostridiales could be responsible for the change in TMAO levels. CONCLUSION: Linaclotide reduced TMAO and uremic toxin levels and could be a powerful tool for the prevention and control of the cardiorenal syndrome by modification of the gut-cardio-renal axis.

  28. Geranylgeraniol Suppresses the Expression of IRAK1 and TRAF6 to Inhibit NFκB Activation in Lipopolysaccharide-Induced Inflammatory Responses in Human Macrophage-Like Cells. 国際誌 査読有り

    Puspo E Giriwono, Hitoshi Shirakawa, Yusuke Ohsaki, Shoko Sato, Yukihide Aoyama, Hsin-Jung Ho, Tomoko Goto, Michio Komai

    International journal of molecular sciences 20 (9) 2019年5月10日

    DOI: 10.3390/ijms20092320  

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    Geranylgeraniol (GGOH), a natural isoprenoid found in plants, has anti-inflammatory effects via inhibiting the activation of nuclear factor-kappa B (NFκB). However, its detailed mechanism has not yet been elucidated. Recent studies have revealed that isoprenoids can modulate signaling molecules in innate immune responses. We found that GGOH decreased the expression of lipopolysaccharide (LPS)-induced inflammatory genes in human macrophage-like THP-1 cells. Furthermore, we observed that the suppression of NFκB signaling proteins, in particular interleukin-1 receptor-associated kinase 1 (IRAK1) and tumor necrosis factor receptor-associated factor 6 (TRAF6), occurred in GGOH-treated cells prior to LPS stimulation, suggesting an immunomodulatory effect. These results indicate that GGOH may modulate and help prevent excessive NFκB activation that can lead to numerous diseases.

  29. ケモカインレセプターCCR10阻害薬による腎不全抑制効果の検討

    一條 真梨子, 何 欣蓉, 金光 祥臣, 菊地 晃一, 秋山 由雅子, 三島 英換, 鈴木 健弘, 鈴木 千登世, 富岡 佳久, 伊藤 貞嘉, 阿部 高明

    日本腎臓学会誌 61 (3) 325-325 2019年5月

    出版者・発行元: (一社)日本腎臓学会

    ISSN:0385-2385

    eISSN:1884-0728

  30. Gut microbiome-derived phenyl sulfate contributes to albuminuria in diabetic kidney disease. 国際誌 査読有り

    Koichi Kikuchi, Daisuke Saigusa, Yoshitomi Kanemitsu, Yotaro Matsumoto, Paxton Thanai, Naoto Suzuki, Koki Mise, Hiroaki Yamaguchi, Tomohiro Nakamura, Kei Asaji, Chikahisa Mukawa, Hiroki Tsukamoto, Toshihiro Sato, Yoshitsugu Oikawa, Tomoyuki Iwasaki, Yuji Oe, Tomoya Tsukimi, Noriko N Fukuda, Hsin-Jung Ho, Fumika Nanto-Hara, Jiro Ogura, Ritsumi Saito, Shizuko Nagao, Yusuke Ohsaki, Satoshi Shimada, Takehiro Suzuki, Takafumi Toyohara, Eikan Mishima, Hisato Shima, Yasutoshi Akiyama, Yukako Akiyama, Mariko Ichijo, Tetsuro Matsuhashi, Akihiro Matsuo, Yoshiaki Ogata, Ching-Chin Yang, Chitose Suzuki, Matthew C Breeggemann, Jurgen Heymann, Miho Shimizu, Susumu Ogawa, Nobuyuki Takahashi, Takashi Suzuki, Yuji Owada, Shigeo Kure, Nariyasu Mano, Tomoyoshi Soga, Takashi Wada, Jeffrey B Kopp, Shinji Fukuda, Atsushi Hozawa, Masayuki Yamamoto, Sadayoshi Ito, Jun Wada, Yoshihisa Tomioka, Takaaki Abe

    Nature communications 10 (1) 1835-1835 2019年4月23日

    DOI: 10.1038/s41467-019-09735-4  

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    Diabetic kidney disease is a major cause of renal failure that urgently necessitates a breakthrough in disease management. Here we show using untargeted metabolomics that levels of phenyl sulfate, a gut microbiota-derived metabolite, increase with the progression of diabetes in rats overexpressing human uremic toxin transporter SLCO4C1 in the kidney, and are decreased in rats with limited proteinuria. In experimental models of diabetes, phenyl sulfate administration induces albuminuria and podocyte damage. In a diabetic patient cohort, phenyl sulfate levels significantly correlate with basal and predicted 2-year progression of albuminuria in patients with microalbuminuria. Inhibition of tyrosine phenol-lyase, a bacterial enzyme responsible for the synthesis of phenol from dietary tyrosine before it is metabolized into phenyl sulfate in the liver, reduces albuminuria in diabetic mice. Together, our results suggest that phenyl sulfate contributes to albuminuria and could be used as a disease marker and future therapeutic target in diabetic kidney disease.

  31. Menaquinone-4 Amplified Glucose-Stimulated Insulin Secretion in Isolated Mouse Pancreatic Islets and INS-1 Rat Insulinoma Cells. 国際誌 査読有り

    Hsin-Jung Ho, Hitoshi Shirakawa, Keisukei Hirahara, Hideyuki Sone, Shin Kamiyama, Michio Komai

    International journal of molecular sciences 20 (8) 2019年4月23日

    DOI: 10.3390/ijms20081995  

    詳細を見る 詳細を閉じる

    Vitamin K2 is indispensable for blood coagulation and bone metabolism. Menaquinone-4 (MK-4) is the predominant homolog of vitamin K2, which is present in large amounts in the pancreas, although its function is unclear. Meanwhile, β-cell dysfunction following insulin secretion has been found to decrease in patients with type 2 diabetes mellitus. To elucidate the physiological function of MK-4 in pancreatic β-cells, we studied the effects of MK-4 treatment on isolated mouse pancreatic islets and rat INS-1 cells. Glucose-stimulated insulin secretion significantly increased in isolated islets and INS-1 cells treated with MK-4. It was further clarified that MK-4 enhanced cAMP levels, accompanied by the regulation of the exchange protein directly activated by the cAMP 2 (Epac2)-dependent pathway but not the protein kinase A (PKA)-dependent pathway. A novel function of MK-4 on glucose-stimulated insulin secretion was found, suggesting that MK-4 might act as a potent amplifier of the incretin effect. This study therefore presents a novel potential therapeutic approach for impaired insulinotropic effects.

  32. Canagliflozin reduces plasma uremic toxins and alters the intestinal microbiota composition in a chronic kidney disease mouse model. 国際誌 査読有り

    Eikan Mishima, Shinji Fukuda, Yoshitomi Kanemitsu, Daisuke Saigusa, Chikahisa Mukawa, Kei Asaji, Yotaro Matsumoto, Hiroki Tsukamoto, Tatsuki Tachikawa, Tomoya Tsukimi, Noriko N Fukuda, Hsin-Jung Ho, Koichi Kikuchi, Chitose Suzuki, Fumika Nanto, Takehiro Suzuki, Sadayoshi Ito, Tomoyoshi Soga, Yoshihisa Tomioka, Takaaki Abe

    American journal of physiology. Renal physiology 315 (4) F824-F833 2018年10月1日

    DOI: 10.1152/ajprenal.00314.2017  

    詳細を見る 詳細を閉じる

    Accumulation of uremic toxins, which exert deleterious effects in chronic kidney disease, is influenced by the intestinal environment; the microbiota contributes to the production of representative uremic toxins, including p-cresyl sulfate and indoxyl sulfate. Canagliflozin is a sodium-glucose cotransporter (SGLT) 2 inhibitor, and it also exerts a modest inhibitory effect on SGLT1. The inhibition of intestinal SGLT1 can influence the gastrointestinal environment. We examined the effect of canagliflozin on the accumulation of uremic toxins in chronic kidney disease using adenine-induced renal failure mice. Two-week canagliflozin (10 mg/kg po) treatment did not influence the impaired renal function; however, it significantly reduced the plasma levels of p-cresyl sulfate and indoxyl sulfate in renal failure mice (a 75% and 26% reduction, respectively, compared with the vehicle group). Additionally, canagliflozin significantly increased cecal short-chain fatty acids in the mice, suggesting the promotion of bacterial carbohydrate fermentation in the intestine. Analysis of the cecal microbiota showed that canagliflozin significantly altered microbiota composition in the renal failure mice. These results indicate that canagliflozin exerts intestinal effects that reduce the accumulation of uremic toxins including p-cresyl sulfate. Reduction of accumulated uremic toxins by canagliflozin could provide a potential therapeutic option in chronic kidney disease.

  33. A novel function of geranylgeraniol in regulating testosterone production. 国際誌 査読有り

    Hsin-Jung Ho, Hitoshi Shirakawa, Puspo E Giriwono, Asagi Ito, Michio Komai

    Bioscience, biotechnology, and biochemistry 82 (6) 956-962 2018年6月

    DOI: 10.1080/09168451.2017.1415129  

    詳細を見る 詳細を閉じる

    Isoprenoids play widely differing roles in various physiological processes in animals and plants. Geranylgeraniol (GGOH) is an isoprenoid found in plants, and is an important metabolic derivative in the isoprenoid/cholesterol synthesis pathway. Earlier studies focused on GGOH's ability to improve the side effects of bisphosphonate therapy by regulating the mevalonate pathway. More recently, the mevalonate pathway-independent effects of GGOH have been described, including anti-inflammatory, anti-tumorigenic, and neuroprotective activities. It is noteworthy that GGOH regulates the steroidogenesis pathway in testis-derived I-10 tumor cells. Testosterone is a hormone produced via steroidogenesis in testicles and plays a role in fetal development and the male reproductive system. GGOH enhanced testosterone and progesterone (its precursor) levels in I-10 cells by activating adenylate cyclase via cAMP/PKA signaling, without altering phosphodiesterase activity. These findings highlight the potential benefits of GGOH as a therapeutic agent for low testosterone levels, such as late-onset hypogonadism in men.

  34. Mitochonic Acid 5 (MA-5) Facilitates ATP Synthase Oligomerization and Cell Survival in Various Mitochondrial Diseases. 国際誌 査読有り

    Tetsuro Matsuhashi, Takeya Sato, Shin-Ichiro Kanno, Takehiro Suzuki, Akihiro Matsuo, Yuki Oba, Motoi Kikusato, Emi Ogasawara, Tai Kudo, Kosuke Suzuki, Osamu Ohara, Hiroko Shimbo, Fumika Nanto, Hiroaki Yamaguchi, Daisuke Saigusa, Yasuno Mukaiyama, Akiko Watabe, Koichi Kikuchi, Hisato Shima, Eikan Mishima, Yasutoshi Akiyama, Yoshitsugu Oikawa, H O Hsin-Jung, Yukako Akiyama, Chitose Suzuki, Mitsugu Uematsu, Masaki Ogata, Naonori Kumagai, Masaaki Toyomizu, Atsushi Hozawa, Nariyasu Mano, Yuji Owada, Setsuya Aiba, Teruyuki Yanagisawa, Yoshihisa Tomioka, Shigeo Kure, Sadayoshi Ito, Kazuto Nakada, Ken-Ichiro Hayashi, Hitoshi Osaka, Takaaki Abe

    EBioMedicine 20 27-38 2017年6月

    DOI: 10.1016/j.ebiom.2017.05.016  

    詳細を見る 詳細を閉じる

    Mitochondrial dysfunction increases oxidative stress and depletes ATP in a variety of disorders. Several antioxidant therapies and drugs affecting mitochondrial biogenesis are undergoing investigation, although not all of them have demonstrated favorable effects in the clinic. We recently reported a therapeutic mitochondrial drug mitochonic acid MA-5 (Tohoku J. Exp. Med., 2015). MA-5 increased ATP, rescued mitochondrial disease fibroblasts and prolonged the life span of the disease model "Mitomouse" (JASN, 2016). To investigate the potential of MA-5 on various mitochondrial diseases, we collected 25 cases of fibroblasts from various genetic mutations and cell protective effect of MA-5 and the ATP producing mechanism was examined. 24 out of the 25 patient fibroblasts (96%) were responded to MA-5. Under oxidative stress condition, the GDF-15 was increased and this increase was significantly abrogated by MA-5. The serum GDF-15 elevated in Mitomouse was likewise reduced by MA-5. MA-5 facilitates mitochondrial ATP production and reduces ROS independent of ETC by facilitating ATP synthase oligomerization and supercomplex formation with mitofilin/Mic60. MA-5 reduced mitochondria fragmentation, restores crista shape and dynamics. MA-5 has potential as a drug for the treatment of various mitochondrial diseases. The diagnostic use of GDF-15 will be also useful in a forthcoming MA-5 clinical trial.

  35. A novel indole compound MA-35 attenuates renal fibrosis by inhibiting both TNF-α and TGF-β1 pathways. 国際誌 査読有り

    Hisato Shima, Kensuke Sasaki, Takehiro Suzuki, Chikahisa Mukawa, Ten Obara, Yuki Oba, Akihiro Matsuo, Takayasu Kobayashi, Eikan Mishima, Shun Watanabe, Yasutoshi Akiyama, Koichi Kikuchi, Tetsuro Matsuhashi, Yoshitsugu Oikawa, Fumika Nanto, Yukako Akiyama, Hsin-Jung Ho, Chitose Suzuki, Daisuke Saigusa, Atsushi Masamune, Yoshihisa Tomioka, Takao Masaki, Sadayoshi Ito, Ken-Ichiro Hayashi, Takaaki Abe

    Scientific reports 7 (1) 1884-1884 2017年5月15日

    DOI: 10.1038/s41598-017-01702-7  

    詳細を見る 詳細を閉じる

    Renal fibrosis is closely related to chronic inflammation and is under the control of epigenetic regulations. Because the signaling of transforming growth factor-β1 (TGF-β1) and tumor necrosis factor-α (TNF-α) play key roles in progression of renal fibrosis, dual blockade of TGF-β1 and TNF-α is desired as its therapeutic approach. Here we screened small molecules showing anti-TNF-α activity in the compound library of indole derivatives. 11 out of 41 indole derivatives inhibited the TNF-α effect. Among them, Mitochonic Acid 35 (MA-35), 5-(3, 5-dimethoxybenzyloxy)-3-indoleacetic acid, showed the potent effect. The anti-TNF-α activity was mediated by inhibiting IκB kinase phosphorylation, which attenuated the LPS/GaIN-induced hepatic inflammation in the mice. Additionally, MA-35 concurrently showed an anti-TGF-β1 effect by inhibiting Smad3 phosphorylation, resulting in the downregulation of TGF-β1-induced fibrotic gene expression. In unilateral ureter obstructed mouse kidney, which is a renal fibrosis model, MA-35 attenuated renal inflammation and fibrosis with the downregulation of inflammatory cytokines and fibrotic gene expressions. Furthermore, MA-35 inhibited TGF-β1-induced H3K4me1 histone modification of the fibrotic gene promoter, leading to a decrease in the fibrotic gene expression. MA-35 affects multiple signaling pathways involved in the fibrosis and may recover epigenetic modification; therefore, it could possibly be a novel therapeutic drug for fibrosis.

  36. 抗TNF-α作用と抗TGF-β1作用を有する新規抗線維化薬Mitochonic acid 35(MA-35)の開発

    島 久登, 佐々木 健介, 鈴木 健弘, 三島 英換, 菊地 晃一, 松橋 徹郎, 及川 善嗣, 秋山 由雅子, 南都 文香, 何 欣蓉, 鈴木 千登世, 正木 崇生, 伊藤 貞嘉, 阿部 高明

    日本腎臓学会誌 59 (3) 258-258 2017年4月

    出版者・発行元: (一社)日本腎臓学会

    ISSN:0385-2385

    eISSN:1884-0728

  37. Menaquinone‐4 Enhances Steroidogenesis in Testis Derived Tumor Cells Via the Elevation of cAMP Level 査読有り

    Hsin-Jung Ho, Hitoshi Shirakawa, Michio Komai

    Vitamin K2 - Vital for Health and Wellbeing 2017年3月22日

    出版者・発行元: InTech

    DOI: 10.5772/63982  

  38. Effect of Kaempferia paruiflora extract and its polymethoxyflavonoid components on testosterone production in mouse testis-derived tumour cells 査読有り

    Satoru Horigome, Misato Maeda, Hsin-Jung Ho, Hitoshi Shirakawa, Michio Komai

    JOURNAL OF FUNCTIONAL FOODS 26 529-538 2016年10月

    DOI: 10.1016/j.jff.2016.08.008  

    ISSN:1756-4646

  39. Geranylgeraniol enhances testosterone production via the cAMP/protein kinase A pathway in testis-derived I-10 tumor cells. 国際誌 査読有り

    Hsin-Jung Ho, Hitoshi Shirakawa, Risa Yoshida, Asagi Ito, Misato Maeda, Tomoko Goto, Michio Komai

    Bioscience, biotechnology, and biochemistry 80 (4) 791-7 2016年

    DOI: 10.1080/09168451.2015.1123612  

    詳細を見る 詳細を閉じる

    Testosterone levels in men decrease with age; this decline has been linked to various diseases and can shorten life expectancy. Geranylgeraniol (GGOH) is an isoprenoid found in plants that plays an important role in several biological processes; however, its role in steroidogenesis is unknown. Here, we report that GGOH enhances the production of testosterone and its precursor progesterone in testis-derived I-10 tumor cells. GGOH induced protein kinase A (PKA) activity and increased cAMP levels and was found to regulate cAMP/PKA signaling by activating adenylate cyclase without altering phosphodiesterase activity. GGOH also stimulated mRNA and protein levels of steroidogenic acute regulatory protein, a downstream effector in the cAMP/PKA pathway. These results demonstrate that GGOH enhances steroidogenesis in testis-derived cells by modulating cAMP/PKA signaling. Our findings have potential applications for the development of therapeutics that increase testosterone levels in aging men.

  40. Erratum: Dietary intake, glucose metabolism, and sex hormones in women with polycystic ovary syndrome (PCOS) compared with women with non-PCOS-related infertility (British Journal of Nutrition (2012) 109 (2190-2198) DOI: 10.1017/S0007114512004369)

    Tsai, Y.-H., Wang, T.-W., Wei, H.-J., Hsu, C.-Y., Ho, H.-J., Chen, W.-H., Young, R., Liaw, C.-M., Chao, J.C.-J.

    British Journal of Nutrition 111 (11) 2045-2045 2014年

    DOI: 10.1017/S0007114514000403  

    ISSN:0007-1145 1475-2662

  41. The use of oral rehydration salt in managing children under 5y old with diarrhea in the Gambia: Knowledge, attitude, and practice 査読有り

    Sillah, F., Ho, H.-J., Chao, J.C.-J.

    Nutrition 29 (11-12) 1368-1373 2013年11月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.nut.2013.05.014  

    ISSN:0899-9007 1873-1244

  42. Dietary intake, glucose metabolism and sex hormones in women with polycystic ovary syndrome (PCOS) compared with women with non-PCOS-related infertility 査読有り

    Tsai, Y.-H., Wang, T.-W., Wei, H.-J., Hsu, C.-Y., Ho, H.-J., Chen, W.-H., Young, R., Liaw, C.-M., Chao, J.C.-J.

    British Journal of Nutrition 109 (12) 2190-2198 2013年6月28日

    出版者・発行元: Cambridge University Press (CUP)

    DOI: 10.1017/S0007114512004369  

    ISSN:0007-1145 1475-2662

    eISSN:1475-2662

  43. Lycopene inhibits growth of human colon cancer cells via suppression of the Akt signaling pathway 査読有り

    Tang, F.-Y., Shih, C.-J., Cheng, L.-H., Ho, H.-J., Chen, H.-J.

    Molecular Nutrition and Food Research 52 (6) 646-654 2008年6月

    出版者・発行元: Wiley

    DOI: 10.1002/mnfr.200700272  

    ISSN:1613-4125 1613-4133

    eISSN:1613-4133

︎全件表示 ︎最初の5件までを表示

MISC 26

  1. Identification of Gut Microbiota Modulating Kidney Function in CKD

    Yuji Noguchi, Takafumi Toyohara, Hsinjung Ho, Sosuke Kinomura, Ryota Kujirai, Shun Watanabe, Koichi Kikuchi, Chitose Suzuki, Takehiro Suzuki, Shinji Fukuda, Tomoyoshi Soga, Tetsuhiro Tanaka, Takaaki Abe

    JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY 36 (10) 2025年10月

    ISSN: 1046-6673

    eISSN: 1533-3450

  2. 腎尿細管細胞におけるマガキ由来抗酸化物質DHMBAのミトコンドリア保護効果

    何欣蓉, 青木菜摘, 櫻井俊宏, 千葉仁志, 千葉仁志, 渡辺秀明, 渡辺貢, 渡辺貢, 惠淑萍

    臨床化学(Web) 53 2024年

    ISSN: 0370-5633

  3. ミトコンドリア機能解析が明らかにしたケンフェロールの新機能

    櫻井知子, 櫻井俊宏, 何欣蓉, 千葉仁志, 惠淑萍

    臨床化学(Web) 53 2024年

    ISSN: 0370-5633

  4. 糖尿病性腎症モデルマウスにおける抗酸化物質flazinの腎機能への影響に関する研究

    内田真奈美, 何欣蓉, 呉訓智, 江口美祈, 竹内美音, 千葉仁志, 惠淑萍

    臨床化学(Web) 53 2024年

    ISSN: 0370-5633

  5. 糖尿病性腎症マウスにおけるリゾホスファチジルエタノールアミンプロファイルの解明

    井上夏緒, 何欣蓉, GOWDA Siddabasave Gowda B., 江口美祈, 竹内美音, 千葉仁志, 惠淑萍

    臨床化学(Web) 53 2024年

    ISSN: 0370-5633

  6. PC12細胞におけるflazinの神経突起伸長作用の検討とその機序の解明

    竹内美音, 何欣蓉, 千葉仁志, 惠淑萍

    臨床化学(Web) 53 2024年

    ISSN: 0370-5633

  7. Improving effect of flazin on mitochondrial quality and function in human HK-2 cells

    呉訓智, 何欣蓉, 江口美祈, 千葉仁志, 千葉仁志, 惠淑萍, 惠淑萍

    臨床化学(Web) 52 2023年

    ISSN: 0370-5633

  8. ケンペロールによるミトコンドリアへの作用

    櫻井知子, 櫻井俊宏, 何欣蓉, 千葉仁志, 惠淑萍

    臨床化学(Web) 52 2023年

    ISSN: 0370-5633

  9. Elobixibat投与マウスにおける胆汁酸および腸内細菌叢の検討

    蓑輪圭太, 秋山由雅子, 笠原朋子, 何欣蓉, 前川正充, 菊池晃一, 豊原敬文, 鈴木健弘, 鈴木千登世, 鯨井涼太, 松本洋太郎, 富岡佳久, 阿部高明

    日本腎臓学会誌(Web) 65 (3) 2023年

    ISSN: 1884-0728

  10. 腎臓近位尿細管細胞におけるメナキノン-4の酸化ストレス軽減効果

    何 欣蓉, 青木 菜摘, 高 明晨, 鈴木 拓貴, 千葉 仁志, 惠 淑萍

    ビタミン 96 (4) 193-193 2022年4月

    出版者・発行元: (公社)日本ビタミン学会

    ISSN: 0006-386X

  11. ビタミンKによる腎臓近位尿細管細胞のミトコンドリア保護作用

    青木菜摘, 何欣蓉, 高明晨, 鈴木拓貴, 千葉仁志, 惠淑萍

    臨床化学(Web) 51 2022年

    ISSN: 0370-5633

  12. 酸化HDLによる肝細胞のミトコンドリア機能低下作用

    櫻井俊宏, 山端ありさ, 関島将人, 井上夏緒, 上野朱音, 茂木すみれ, 何欣蓉, 陳震, 千葉仁志, 惠淑萍

    臨床化学(Web) 51 2022年

    ISSN: 0370-5633

  13. ビタミンKの腎臓近位尿細管細胞におけるフェロトーシスの抑制作用に関する研究

    何欣蓉, 江口美祈, 青木菜摘, 惠淑萍, 千葉仁志

    臨床化学(Web) 51 2022年

    ISSN: 0370-5633

  14. 腸内細菌叢と胆汁酸の調節による腎不全治療

    秋山 由雅子, 前川 正充, 菊地 晃一, 何 欣蓉, 一條 真梨子, 鈴木 千登世, 渡邉 駿, 豊原 敬文, 鈴木 健弘, 富岡 佳久, 阿部 高明

    日本腎臓学会誌 63 (4) 459-459 2021年6月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  15. 腸内細菌叢と胆汁酸の調節による腎不全治療

    秋山 由雅子, 前川 正充, 菊地 晃一, 何 欣蓉, 一條 真梨子, 鈴木 千登世, 渡邉 駿, 豊原 敬文, 鈴木 健弘, 富岡 佳久, 阿部 高明

    日本腎臓学会誌 63 (4) 459-459 2021年6月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  16. サケ白子抽出物の培養ヒト肝細胞におけるミトコンドリア活性化作用

    関島 将人, 櫻井 俊宏, 佐藤 浩志, 何 欣蓉, 千葉 仁志, 惠 淑萍

    臨床化学 49 (Suppl.1) 152-152 2020年10月

    出版者・発行元: (一社)日本臨床化学会

    ISSN: 0370-5633

  17. アデニン誘発腎不全マウスにおけるエロビキシバットの効果

    秋山 由雅子, 前川 正充, 金光 祥臣, 菊地 晃一, 何 欣蓉, 三島 英換, 鈴木 健弘, 一條 真梨子, 鈴木 千登世, 眞野 成康, 富岡 佳久, 阿部 高明

    日本腎臓学会誌 62 (4) 337-337 2020年7月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  18. アデニン誘発腎不全マウスにおけるエロビキシバットの効果

    秋山 由雅子, 前川 正充, 金光 祥臣, 菊地 晃一, 何 欣蓉, 三島 英換, 鈴木 健弘, 一條 真梨子, 鈴木 千登世, 眞野 成康, 富岡 佳久, 阿部 高明

    日本腎臓学会誌 62 (4) 337-337 2020年7月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  19. グアニル酸シクラーゼC受容体作動薬リナクロチドは血中TMAO値を低下させ慢性腎不全に伴う心血管疾患のリスクを緩和する

    原 文香, 金光 祥臣, 福田 真嗣, 菊地 晃一, 何 欣蓉, 鈴木 千登世, 曽我 朋義, 富岡 佳久, 阿部 高明

    日本内分泌学会雑誌 95 (4) 1612-1612 2020年2月

    出版者・発行元: (一社)日本内分泌学会

    ISSN: 0029-0661

    eISSN: 2186-506X

  20. 腸内細菌由来のフェニル硫酸は糖尿病性腎臓病でのアルブミン尿増悪の原因物質かつ予測マーカーである

    菊地晃一, 三枝大輔, 金光祥臣, 松本洋太郎, 中村智洋, 淺地圭, 三瀬広記, 何欣蓉, 三島英換, 鈴木健弘, 和田淳, 寶澤篤, 伊藤貞嘉, 阿部高明

    日本腎臓学会誌 61 (3) 312-312 2019年5月15日

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  21. グアニル酸シクラーゼC受容体作動薬リナクロチドは慢性腎不全に伴う心血管疾患のリスクを緩和する

    原 文香[南都], 金光 祥臣, 福田 真嗣, 何 欣蓉, 菊地 晃一, 鈴木 千登世, 曽我 朋義, 富岡 佳久, 伊藤 貞嘉, 阿部 高明

    日本腎臓学会誌 61 (3) 312-312 2019年5月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  22. 胆汁酸トランスポーター阻害薬エロビキシバットによる腎保護作用の検討

    秋山 由雅子, 何 欣蓉, 金光 祥臣, 前川 正充, 菊地 晃一, 鈴木 健弘, 三島 英換, 一條 真梨子, 鈴木 千登世, 眞野 成康, 富岡 佳久, 伊藤 貞嘉, 阿部 高明

    日本腎臓学会誌 61 (3) 403-403 2019年5月

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  23. グアニル酸シクラーゼC受容体作動薬リナクロチドは腎不全に伴う腸内環境悪性化を改善し腎線維化を抑制する

    南都文香, 福田真嗣, 金光祥臣, 三枝大輔, 菊地晃一, 何欣蓉, 三島英換, 鈴木健弘, 松橋徹郎, 及川義嗣, 鈴木千登世, 富岡佳久, 曽我朋義, 伊藤貞嘉, 阿部高明

    日本腎臓学会誌 60 (3) 463-463 2018年4月30日

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

  24. ビオチンによる男性ホルモン産生促進とその作用機序の解析

    塩沢浩太, 前田美里, 何欣蓉, 白川仁, 駒井三千夫

    日本食品科学工学会大会講演集 65th 2018年

  25. グアニル酸シクラーゼC受容体作動薬リナクロチドは腎不全に伴う腸内環境悪性化を改善し腎線維化を抑制する

    南都文香, 福田真嗣, 金光祥臣, 三枝大輔, 菊地晃一, 何欣蓉, 三島英換, 鈴木健弘, 松橋徹郎, 及川義嗣, 鈴木千登世, 富岡佳久, 曽我朋義, 伊藤貞嘉, 阿部高明

    日本腎臓学会誌 60 (3) 463-463 2018年

    出版者・発行元: (一社)日本腎臓学会

    ISSN: 0385-2385

    eISSN: 1884-0728

  26. ビタミンKによる性ホルモン産生促進

    白川仁, 何欣蓉, 駒井三千夫

    ビタミン 90 3-8 2016年1月

    DOI: 10.20632/vso.90.1_3  

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書籍等出版物 1

  1. ビタミン・バイオファクター総合事典

    日本ビタミン学会, 竹谷, 豊, 生城, 浩子, 池田, 彩子, 石川, 孝博, 太田, 好次, 小暮, 健太朗, 瀧谷, 公隆, 田中, 清, 津川, 尚子, 内藤, 裕二, 野坂, 和人, 福渡, 努

    朝倉書店 2021年7月

    ISBN: 9784254102925

共同研究・競争的資金等の研究課題 7

  1. 老化抑制における生体内変換型ビタミンKの役割とその作用機序に関する研究

    白川 仁, 大崎 雄介, 何 欣蓉, Afifah Zahra・Agista, 仲川 清隆, 野地 智法

    2026年4月1日 ~ 2030年3月31日

  2. 生体内変換型ビタミンKによる抗老化作用とその作用機序に関する研究

    白川 仁, 大崎 雄介, Afifah Zahra・Agista, 何 欣蓉

    2023年4月1日 ~ 2026年3月31日

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    ビタミンK(VK)は、プロトロンビンをはじめとした血液凝固因子やオステオカルシンなどの骨タンパク質の活性化(翻訳後修飾)を行うγ-グルタミルカルボキシラーゼの補因子として働き、血液凝固系や骨代謝と密接に関わっている。食事由来のVKは緑色野菜(VK1)や発酵食品、肉類、鶏卵(VK2)などである。摂取されたVKは肝臓や骨のほか、膵臓、脳、腎臓、生殖腺、筋肉などにも分布するが、肝、骨以外の組織での役割は十分に明らかとなっていない。本研究は、大脳、筋肉、腎臓おけるVK、特にVK2のひとつであるメナキノン-4(MK-4)の作用を明らかにして、加齢に伴う疾病に対して本ビタミンが持つ寿命延伸効果を示すことを目的とした。まず、認知症モデルマウス(家族性アルツハイマー病患者の変異型アミロイドβ遺伝子をノックインしたマウス)にコントロール食、VK1およびメナキノン-4添加食を与え、6ヵ月間飼育した。飼育期間中に、Y字迷路試験、受動回避行動試験、水迷路試験を行った。飼育が終了した動物の一部に、VKの摂取状況の違いによる行動変化がみられ、認知能低下への改善効果の可能性が示唆された。また、海馬由来細胞HT-22、筋芽細胞C2C12、腎由来HK2細胞に酸化ストレスを誘導した際の細胞の生存率やミトコンドリア活性に与える影響を解析したところ、メナキノン-4の添加により細胞死の抑制やATP産生の回復が観察された。還元酵素FSP1の阻害剤によってメナキノン-4の効果は消失したことから、還元型のVKが本活性を示すと推定された。さらに、通常マウスにVK欠乏食を給餌し、腸内マイクロバイオームを解析したところ変化がみられ、菌相の違いによる脳機能への影響が示唆された。

  3. 生体内変換型ビタミンKによる抗老化作用とその作用機序に関する研究

    白川 仁, 大崎 雄介, Afifah Zahra・Agista, 何 欣蓉

    2023年4月1日 ~ 2026年3月31日

  4. 筋腎連関によるビタミンKのミトコンドリアを標的とした新規作用

    何 欣蓉, 陳 震

    2022年4月1日 ~ 2025年3月31日

  5. 脳内活性型ビタミンKの認知機能増強作用と作用機序の解析

    白川 仁, 大崎 雄介, 何 欣蓉, SULTANA HALIMA

    2020年4月1日 ~ 2023年3月31日

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    ビタミンK(VK)は、血液凝固因子やオステオカルシンなどの骨タンパク質を活性化させるγ-グルタミルカルボキシラーゼの補因子として、必須な因子である。我々は、緑色野菜に含まれるVK1や発酵食品、動物性食品に含まれるVK2を摂取している。VKの生体内分布をみると骨や肝臓のほかに、膵臓、精巣、脳などにも存在しているが、各組織におけるVKの役割は未だ十分に明らかになっていない。本研究は、脳におけるVK、特にVK2のひとつであるメナキノン-4(MK-4)の作用を明らかにすることを目的とした。本年度は、MK-4の脳における抗炎症作用を明らかにするため、ミクログリアと神経細胞の共培養系での評価を行うとともに、炎症誘発認知症モデルにおいて、VK給餌の影響を解析した。 マウス由来株化ミクログリアをリポポリサッカライド(LPS)で刺激して、その培養上清を採取した。これを用いて、マウス海馬由来神経細胞を培養すると、細胞死が誘発され、ミクログリアからLPS刺激により神経細胞死を誘導する因子が放出されると考えられた。LPS刺激前にミクログリアをMK-4の側鎖構造体であるゲラニルゲラニオール(GGOH)で処理すると、神経細胞の細胞死が抑制された。このことから、GGOHはLPSにより誘導される炎症を抑制し、神経細胞死を引き起こす因子の発現を抑制することが示唆された。 LPSの投与によって起こる記憶障害をオープンフィールド試験、受動的回避行動試験によって評価した。VK1およびMK-4を給餌したマウスとコントロール食マウスとの間で、2つの試験結果に差は見られなかった。一方、LPSにより大脳、海馬のNFκBの発現量が上昇したが、MK-4の給餌によって有意に低下した。このことから、MK-4は脳内で起こる炎症を低下させて神経細胞死を抑制することが示唆された。

  6. ビタミンKによる腎脂肪毒性の改善作用と作用機構の解明

    何 欣蓉

    提供機関:Japan Society for the Promotion of Science

    制度名:Grants-in-Aid for Scientific Research

    研究種目:Grant-in-Aid for Early-Career Scientists

    研究機関:Hokkaido University

    2020年4月1日 ~ 2022年3月31日

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    【背景】糖尿病性腎症では腎臓の近位尿細管細胞に脂肪滴の蓄積が起こる。この脂肪滴の蓄積によりミトコンドリア障害を起こし、過剰な活性酸素種(ROS)が生じることが予想され、細胞死に至ると考えられる。ビタミンK(VK)による腎臓の脂肪蓄積とミトコンドリア障害の改善作用の解明のために、近位尿細管培養細胞への脂肪酸負荷による脂肪毒性への影響を検討し、VKの保護作用の機序解明を目的とする。本研究が解明された場合、VKによる脂肪酸代謝及び酸化ストレスの抑制が新たな腎疾患の治療戦略になると考える。 【方法】腎臓近位尿細管由来HK-2細胞に脂肪酸(パルミチン酸)を処理し、ROSを上昇させ細胞毒性を引き起こすモデル、脂肪滴の蓄積するモデルを確立する。その後、細胞の生存率やATPの測定、脂肪滴の染色を行い、VKの添加によるHK-2細胞への保護効果とその作用機序を解明する。また、非刺激HK-2細胞において、VKのミトコンドリア機能促進作用を調べるためにATP産生の測定および呼吸能の評価、ミトコンドリアDNA(mtDNA)コピー数の測定を行った。 【研究成果】HK-2細胞に脂肪酸負荷を添加し、脂肪滴の蓄積やATPの低下、さらに細胞死が観察された。これは脂肪酸代謝及びミトコンドリア代謝の異常が原因と考えられる。本研究では、VK添加(0.03μM-100μM)によって脂肪毒性から細胞を保護できた。一方、ミトコンドリア呼吸能の変化を測定した結果、非刺激HK-2細胞においても、VK添加でATP産生と最大呼吸が増加した。また、VK添加でmtDNAコピー数に変化は見られなかったことから、VKはミトコンドリアの数に影響は与えずにミトコンドリア機能を活性化させることが示唆された。本研究でVKが酸化ストレスや脂肪毒性から細胞を保護し、ATP産生を増加させたことから、糖尿病性腎症の予防に働くことが期待できると考える。

  7. Identification and clinical implication of biomarkers for mitochondrial diseases

    Ho Hsinjung

    提供機関:Japan Society for the Promotion of Science

    制度名:Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists

    研究種目:Grant-in-Aid for Early-Career Scientists

    研究機関:Hokkaido University

    2018年4月1日 ~ 2020年3月31日

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    For seeking a novel therapeutic approach for the treatment of mitochondria disorder, several studies have been performed. First, the function of mitofilin, which play an indispensable role in the maintenance of mitochondrial function. Second, for the reason of high mitochondrial content and oxygen consumption in the kidney, the continuous mitochondrial dysfunction plays an essential role in progression of renal diseases. Here, we also investigated a new candidate drug for chronic kidney disease and focused on the correlation between lipotoxicity and mitochondrial dysfunction in the kidney. The current study found that a SGLT1 inhibitor decreased the accumulated uremic toxins in the renal failure mice, through altering the gut microbiota composition without changing renal function. Moreover, using a proximal tubule epithelial cell line, lipid droplets accumulated in fatty acids treated cells accompanied by decreased ATP production and mitochondrial dysfunction.

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