Studies on the clinical significance of vitamin B12 insufficiency
Project/Area Number |
16K00881
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Eating habits
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Research Institution | Kobe Gakuin University (2018) Kyoto Women's University (2016-2017) |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | ビタミンB12 / ビタミン不足 / 貧血 / 胃切除 / ホモシステイン / 葉酸 / 骨粗鬆症 / 骨折 / 心血管疾患 / 日本人の食事摂取基準 / 動脈硬化 |
Outline of Final Research Achievements |
We have undertaken these studies, since clinical studies on water-soluble vitamins have been limited. In the elderly, muscle strength was associated with hyperhomocysteinemia. In patients with Crohn's disease, serum vitamin B12 level was decreased despite intake higher than recommended daily allowance, suggesting impaired absorption. In patients scheduled for or after gastrectomy, serum vitamin B12 level was decreased, suggesting that vitamin B12 deficiency occurs much earlier than previously considered.
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Academic Significance and Societal Importance of the Research Achievements |
ビタミン欠乏より軽度の不足であっても、種々の疾患リスクが増加するが、水溶性ビタミンに関する臨床研究は、わが国においてきわめて乏しい。本研究において、ビタミンB12不足は高齢者の筋力低下と関連することを明らかにし、クローン病モデルにおいて、吸収障害がビタミンB12不足の重要な原因となることを示した。さらに胃切除患者において、従来考えられているより、はるかに早期から、ビタミンB12不足が起こることを明らかにした。すなわちビタミンB12不足は、慢性疾患のリスクと関係し、不足者の割合は高い。このようなビタミンB12不足の臨床的意義を明らかにすることは、高齢化社会において、大きな社会的意義を持ち得る。
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Report
(4 results)
Research Products
(11 results)
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[Journal Article] Relationship between Homocysteine, Folate, Vitamin B<sub>12</sub> and Physical Performance in the Institutionalized Elderly2019
Author(s)
Ao M, Yamamoto K, Ohta J, Abe Y, Niki N, Inoue S, Tanaka S, Miyawaki T, Tanaka K.
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Journal Title
Journal of Nutritional Science and Vitaminology
Volume: 65
Issue: 1
Pages: 1-7
DOI
NAID
ISSN
0301-4800, 1881-7742
Year and Date
2019-02-28
Related Report
Peer Reviewed / Open Access
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[Journal Article] Possible involvement of thiamine insufficiency in heart failure in the institutionalized elderly2019
Author(s)
Ao M, Inuiya N, Ohta J, Kurose S, Takaoka H, Abe Y, Niki N, Inoue S, Tanaka S, Miyawaki T, Tanaka K.
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Journal Title
Journal of Clinical Biochemistry and Nutrition
Volume: 64
Issue: 3
Pages: 239-242
DOI
NAID
ISSN
0912-0009, 1880-5086
Related Report
Peer Reviewed / Open Access
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[Presentation] 疾患とビタミン2017
Author(s)
田中清
Organizer
第20回日本病態栄養学会 教育講演
Place of Presentation
京都市
Year and Date
2017-01-14
Related Report
Invited
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