2021 Fiscal Year Final Research Report
Elucidation of set-point mechanism for phosphate homeostasis and development of a novel therapeutic target for age-related diseases
Project/Area Number |
19H04053
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 59040:Nutrition science and health science-related
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Research Institution | The University of Tokushima |
Principal Investigator |
TAKETANI Yutaka 徳島大学, 大学院医歯薬学研究部(医学域), 教授 (30263825)
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Co-Investigator(Kenkyū-buntansha) |
増田 真志 徳島大学, 大学院医歯薬学研究部(医学域), 助教 (50754488)
山本 浩範 仁愛大学, 人間生活学部, 教授 (60314861)
大西 康太 徳島大学, 大学院医歯薬学研究部(医学域), 助教 (80723816)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 高リン血症 / 異所性石灰化 / 慢性腎臓病 / 老化 |
Outline of Final Research Achievements |
Blood phosphorus concentration is maintained within a certain range by phosphate regulating hormones. The phosphorus concentration is high in infancy, then decreases as the child grows. The purpose of this study was to identify the factors that determine the phosphorus concentration and to clarify the mechanism of ectopic calcification suppression during the growth period. As a result, we found tissue-non-specific alkaline phosphatase in the liver as a new regulator that determines phosphorus concentration. In addition, an attempt to identify ectopic calcification inhibitor during the growth phase revealed that serum fetuin-A and vascular tissue-nonspecific alkaline phosphatase are important factors for the suppression of ectopic calcification during the growth phase.
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Free Research Field |
栄養学
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Academic Significance and Societal Importance of the Research Achievements |
血中リン濃度は、乳幼児期には成人の2倍程度高く、成長するに従って低下する。この乳幼児期のリン濃度は、成人であれば高リン血症とされ、血管などに異所性石灰化を引き起こすには十分な濃度であるにもかかわらず、乳幼児期にはそのような異所性石灰化は生じない。異所性石灰化は老化関連病変の1つであり、慢性腎臓病や糖尿病などの多くの生活習慣病においてみられ、動脈硬化などを引き起こし、生命予後を規定する重要な因子である。本研究成果は、老化様病変である異所性石灰化の新たな予防法・治療法を開発するための基礎的成果である。
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