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• Gut microbiota-based prediction for the transition from normal glucose tolerance (NGT) to impaired glucose tolerance (IGT) in a remote island cohort study

  Uema, T; Tsukita, M; Okamoto, S; Uehara, M; Honma, KI; Nakayama, Y; Tamaki, A; Miyazato, M; Ashikari, A; Maeda, S; Imamura, M; Matsushita, M; Nakamura, K; Masuzaki, H

  DIABETES RESEARCH AND CLINICAL PRACTICE ( Diabetes Research and Clinical Practice )  213   111747 - 111747   2024.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  AIM: The present cohort study explored whether specific gut microbiota (GM) profile would predict the development of impaired glucose tolerance (IGT) in individuals with normal glucose tolerance (NGT). METHODS: A total of 114 study subjects with NGT in Kumejima island, Japan participated in the present study and underwent 75 g oral glucose tolerance tests at baseline and one year later. We compared the profile of GM at baseline between individuals who consistently maintained NGT (NRN, n = 108) and those who transitioned from NGT to IGT (NTI, n = 6). RESULTS: Within-individual bacterial richness and evenness as well as inter-individual bacterial composition showed no significant differences between NRN and NTI. Of note, however, partial least squares discriminant analyses revealed distinct compositions of GM between groups, with no overlap in their 95 % confidence interval ellipses. Multi-factor analyses at the genus level demonstrated that the proportions of CF231, Corynebacterium, Succinivibrio, and Geobacillus were significantly elevated in NTI compared to NRN (p < 0.005, FDR < 0.1, respectively) after adjusting for age, sex, HbA1c level, and BMI. CONCLUSIONS: Our data suggest that increased proportion of specific GM is linked to the future deterioration of glucose tolerance, thereby serving as a promising predictive marker for type 2 diabetes mellitus.

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• Effects of low-intensity extracorporeal shock wave on bladder and urethral dysfunction in spinal cord injured rats

  Kawase, K; Kamijo, TC; Kusakabe, N; Nakane, K; Koie, T; Miyazato, M

  INTERNATIONAL UROLOGY AND NEPHROLOGY ( International Urology and Nephrology )    2024.06 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Effects of low-intensity extracorporeal shock wave therapy on lipopolysaccharide cystitis in a rat model of interstitial cystitis/bladder pain syndrome

  Kusakabe, N; Kamijo, TC; Wada, N; Chiba, H; Shinohara, N; Miyazato, M

  INTERNATIONAL UROLOGY AND NEPHROLOGY ( International Urology and Nephrology )  56 ( 1 ) 77 - 86   2024.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  PURPOSE: To investigate the effect of low-intensity extracorporeal shock wave therapy (LiESWT) on lipopolysaccharide (LPS)-induced cystitis in an animal model of interstitial cystitis/bladder pain syndrome (IC/BPS). METHODS: Sprague-Dawley rats were divided into three groups: control, cystitis (LPS group, intravesical injection of LPS (1 mg) twice), and cystitis with LiESWT (LiESWT group). On the third and fourth days, LiESWT was administered (0.12 mJ/mm2, 300 shots each time) on the lower abdomen toward the bladder. On the seventh day, the rats underwent pain assessment and a metabolic cage study. Subsequently, a continuous cystometrogram (CMG) was performed under urethane anaesthesia. Immunohistochemical studies were also performed, including S-100 staining, an immunohistochemical marker of Schwann cells in the bladder. RESULTS: In the LPS group, the pain threshold in the lower abdomen was significantly lower than that in the control group. In the metabolic cage study, the mean voided volume in the LPS group significantly increased. The CMG also revealed a significant decrease in bladder contraction amplitude, compatible with detrusor underactivity in the LPS group. Immunohistochemical studies showed inflammatory changes in the submucosa, increased fibrosis, and decreased S-100 stain-positive areas in the muscle layer of the LPS group. In the LiESWT group, tactile allodynia and bladder function were ameliorated, and S-100 stain-positive areas were increased. CONCLUSION: By restoring nerve damage, LiESWT improved lower abdominal pain sensitivity and bladder function in an LPS-induced cystitis rat model. This study suggests that LiESWT may be a new therapeutic modality for IC/BPS.

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• The influence of maternal separation on the development of voiding and behavior in rat pups

  Tadanobu Chuyo Kamijo, Minoru Miyazato

  Continence ( Elsevier BV )    100570 - 100570   2022.12 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Profile of gut microbiota and serum metabolites associated with metabolic syndrome in a remote island most afflicted by obesity in Japan

  Uema, T; Millman, JF; Okamoto, S; Nakamura, T; Yamashiro, K; Uehara, M; Honma, KI; Miyazato, M; Ashikari, A; Saito, S; Maeda, S; Imamura, M; Ishida, H; Matsushita, M; Nakamura, K; Masuzaki, H

  SCIENTIFIC REPORTS ( Scientific Reports )  12 ( 1 ) 17292 - 13   2022.10 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  Numerous studies have revealed distinct differences in the profiles of gut microbiota between non-obese and obese individuals. To date, however, little is known if any disparities in the community of gut microbiota exist between metabolically healthy obese (MHO) and metabolically unhealthy obese (MUO) subjects. We therefore aimed to comprehensively characterize the gut microbiota and circulating metabolites in serum from both MHO and MUO residing in the remote island, Kumejima, where the prevalence of obesity is one of the highest in Japan, and explored possible correlations between the gut microbiota profile and markers of metabolic syndrome. Results revealed that MUO showed significantly higher levels of genera such as g_Succinivibrio, g_Granulicatella, g_Brachyspira, g_Oribacterium and g_Atopobium in comparison to MHO. Moreover, abundance of g_Succinivibrio, g_Brachyspira and g_Atopobium were positively correlated with value of fasting insulin, HOMA-R, circulating triglycerides, diastolic blood pressure, BMI, body weight, waist circumference and HbA1c. In addition, MUO compared to MHO showed an imbalance of serum metabolites, with a significant elevation in 2-oxoisovaleric acid, pyruvic acid, 2-hydroxybutyric acid, and creatine. Our data highlight unmet needs in precision approaches for the treatment of obesity, targeting the gut microbiota profile and serum metabolites in a distinct population affected by obesity.

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Other Papers 【 display / non-display 】

Other Papers 【 display / non-display 】

• PDE5阻害剤タダラフィルのラット尿禁制反射への作用

  泉 秀明, 海法 康裕, 川守田 直樹, 宮里 実, 中川 晴夫, 荒井 陽一

  日本泌尿器科学会総会 ( (一社)日本泌尿器科学会総会事務局 )  104回   PP3 - 114   2016.04

   

• 前立腺癌に対するホルモン療法は腎機能障害を引き起こすか?

  三塚 浩二, 喜屋武 淳, 佐藤 友紀, 折笠 一彦, 青木 大志, 宮里 実, 荒井 陽一

  日本泌尿器科学会総会 ( (一社)日本泌尿器科学会総会事務局 )  104回   PP1 - 088   2016.04

   

• 年齢が前立腺癌ホルモン療法による代謝の変化に与える影響についての検討

  三塚 浩二, 喜屋武 淳, 佐藤 友紀, 折笠 一彦, 宮里 実, 青木 大志, 栫井 成彦, 福士 泰夫, 浪間 孝重, 荒井 陽一

  日本老年泌尿器科学会誌 ( 日本老年泌尿器科学会 )  28   47 - 47   2015.12

   

• 前立腺癌内分泌療法に伴うsarcopenic obesityの検討 CTによる脂肪・筋肉量測定に基づく解析

  三塚 浩二, 喜屋武 淳, 佐藤 友紀, 折笠 一彦, 浪間 孝重, 宮里 実, 荒井 陽一

  日本泌尿器科学会総会 ( (一社)日本泌尿器科学会総会事務局 )  103回   501 - 501   2015.04

   

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2024.04  -  2027.03 

  Direct: 3,500,000 (YEN)  Overheads: 4,550,000 (YEN)  Total: 1,050,000 (YEN)

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2023.04  -  2026.03 

  Direct: 3,600,000 (YEN)  Overheads: 4,680,000 (YEN)  Total: 1,080,000 (YEN)

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2022.04  -  2025.03 

  Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2022.04  -  2025.03 

  Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2022.04  -  2025.03 

  Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

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