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Home About Traditions &＃038; History Careers at YCU Academics Undergraduate Study School of International Liberal Arts School of Economics and Business Administration School of Science School of Data Science School of Medicine School of Medicine: Medical Course School of Medicine: Nursing Course Graduate Study Graduate School of Urban Social and Cultural Studies Graduate School of International Management Graduate School of Nanobioscience Graduate School of Nanobioscience: Department of Materials System Science Graduate School of Nanobioscience: Department of Life and Environmental System Science Graduate School of Data Science Graduate School of Data Science: Department of Data Science Graduate School of Data Science: Department of Health Data Science Graduate School of Medical Life Science Graduate School of Medicine Graduate School of Medicine: Department of Medicine Graduate School of Medicine: Department of Nursing Non-Degree Programs Exchange Program International Clinical Clerkship Research-Only Career Development Support Admissions Research Advanced Medical Research Center Kihara Institute for Biological Research Life at YCU Kanazawa-Hakkei Campus Life Fukuura Campus Life Living in Yokohama Clubs &＃038; Societies Health &＃038; Wellness Global International Affairs Office Exchange Program Partner Institutions Global Cooperation Institute for Sustainable Cities (GCI) 日本語 GAS41 promotes H2A.Z deposition through recognition of the N terminus of histone H3 by the YEATS domain2023-10-16Simplifying the Estimation of Volatile Organic Compounds Emitted From Wildfires2023-10-26 Show all Abnormal lactate metabolism is linked to albuminuria and kidney injury in diabetic nephropathy Date: 16 Oct 23 Researcher(s):Kengo Azushima Diabetic nephropathy (DN) is characterized by abnormal kidney energy metabolism, but its causes and contributions to DN pathogenesis are not clear. To examine this issue, we carried out targeted metabolomics profiling in a mouse model of DN that develops kidney disease resembling the human disorder. We found a distinct profile of increased lactate levels and impaired energy metabolism in kidneys of mice with DN, and treatment with an angiotensin-receptor blocker (ARB) reduced albuminuria, attenuated kidney pathology and corrected many metabolic abnormalities, restoring levels of lactate toward normal while increasing kidney ATP content. We also found enhanced expression of lactate dehydrogenase isoforms in DN. Expression of both the LdhA and LdhB isoforms were significantly increased in kidneys of mice, and treatment with ARB significantly reduced their expression. Single-cell sequencing studies showed specific up-regulation of LdhA in the proximal tubule, along with enhanced expression of oxidative stress pathways. There was a significant correlation between albuminuria and lactate in mice, and also in a Southeast Asian patient cohort consisting of individuals with type 2 diabetes and impaired kidney function. In the individuals with diabetes, this association was independent of ARB and angiotensin-converting enzyme inhibitor use. Furthermore, urinary lactate levels predicted the clinical outcomes of doubling of serum creatinine or development of kidney failure, and there was a significant correlation between urinary lactate levels and biomarkers of tubular injury and epithelial stress. Thus, we suggest that kidney metabolic disruptions leading to enhanced generation of lactate contribute to the pathogenesis of DN and increased urinary lactate levels may be a potential biomarker for risk of kidney disease progression.Link to full article   For inquiries regarding this press release Kengo AzushimaAssistant Professor Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan Search ✕ Latest newsActivity of MEXT Scholarship Alumni After Returning to Their Home Country2024-04-25Intraoperative Integrated Diagnostic System for Malignant Central Nervous System Tumors2023-11-21 Research Research News Advanced Medical Research Center Kihara Institute for Biological Research Researcher Database Global International Affairs Office International Student Support Exchange Program Partner Institutions Global Cooperation Institute for Sustainable Cities (GCI) GCI: Overview GCI: Activities International Academic Consortium for Sustainable Cities (IACSC) Living in Yokohama Admissions 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027 Japan Undergraduate Schools International Liberal Arts Economics and Business Administration Science Data Science Medicine Graduate Schools Urban Social and Cultural Studies International Management Nanobioscience Medical Life Science Medicine  Data Science Admissions Undergraduate Graduate Non-Degree Programs Research Advanced Medical Research Center Kihara Institute for Biological Research Research Database Hospitals Yokohama City University Hospital Yokohama City University Medical Center Life at YCU Campus Life Living in Yokohama Clubs & Societies Health & Wellness Global International Affairs Office Global Cooperation Institute for Sustainable Cities Exchange Programs Partner Institutions NewsActivity of MEXT Scholarship Alumni After Returning to Their Home Country2024-04-25Simplifying the Estimation of Volatile Organic Compounds Emitted From Wildfires2023-10-26Event Report: The 14th IACSC International Symposium/General Assembly2023-10-10 © 2021 Yokohama City University. 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