Cited by 198Bone Metabolism and DiseasesBone health and osteoporosis researchParathyroid Disorders and Treatments

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

Gastric Inhibitory Polypeptide as an Endogenous Factor Promoting New Bone Formation after Food Ingestion

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Abstract

Calcium plays a fundamental role as second messenger in intracellular signaling and bone serves as the body’s calcium reserve to tightly maintain blood calcium levels. Calcium in ingested meal is the main supply and inadequate calcium intake causes osteoporosis and bone fracture. Here, we describe a novel mechanism of how ingested calcium is deposited on bone. Meal ingestion elicits secretion of the gut hormone gastric inhibitory polypeptide (GIP) from endocrine K cells in the duodenum. Bone histomorphometrical analyses revealed that bone formation parameters in the mice lacking GIP receptor (GIPR−/−) were significantly lower than those of wild-type (GIPR+/+) mice, and that the number of osteoclasts, especially multinuclear osteoclasts, was significantly increased in GIPR−/− mice, indicating that GIPR−/− mice have high-turnover osteoporosis. In vitro examination showed the percentage of osteoblastic cells undergoing apoptosis to be significantly decreased in the presence of GIP. Because GIPR−/− mice exhibited an increased plasma calcium concentration after meal ingestion, GIP directly links calcium contained in meal to calcium deposition on bone.

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Crossref · 10.1210/me.2005-0187

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Metadata

Authors
Tsukiyama, K., Yamada, Y., Yamada, C., Harada, N., Kawasaki, Y., Ogura, M., Bessho, K., Li, M., Amizuka, N., Sato, M., Udagawa, N., Takahashi, N., Tanaka, K., Oiso, Y., & Seino, Y.
Affiliations
  • Nagoya University (JP)
  • Departments of Diabetes and Clinical Nutrition (K.Ts., Y.Y., C.Y., N.H., Y.K., M.O., Y.S.), Kyoto 606-8507, Japan;
  • Kyoto University (JP)
  • Niigata University (JP)
  • Department of Biochemistry (M.S., N.U.), Nagano 399-0781, Japan;
  • Matsumoto Dental University (JP)
  • Kyoto Women's University (JP)
  • Kansai Electric Power Hospital (JP)
Corresponding author
Yamada, Yuichiro
Venue
Molecular Endocrinology
Published
2006-07-01
Volume
20
Issue
7
Pages
1644-1651
ISSN
  • 0888-8809 (ISSN-L)
  • 1944-9917
OpenAlex
W2103318165
Cited by
198
References
33
Citations by year
2026: 4 · 2025: 9 · 2024: 7 · 2023: 5 · 2022: 9 · 2021: 6 · 2020: 8 · 2019: 17 · 2018: 15 · 2017: 11 · 2016: 12 · 2015: 15 · 2014: 12 · 2013: 18 · 2012: 6
FWCI
3.80
Type
journal article
Language
en
Open access
Locations
  • Molecular Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • Japan Society for the Promotion of Science
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Nephrology › Parathyroid Disorders and Treatments
Keywords
glucose-dependent insulinotropic polypeptide, GIP receptor, bone formation, calcium homeostasis, meal ingestion, gastrointestinal hormones, K cells, osteoclasts, osteoblast apoptosis, plasma calcium, bone histomorphometry
MeSH terms
Animals, Bone Resorption, Calcium, Eating, Gastric Inhibitory Polypeptide, Male, Mice, Transgenic, Models, Biological, Osteoblasts, Osteoclasts, Osteogenesis, Osteoporosis, Tibia, Signal Transduction, Apoptosis Regulatory Proteins, Mice

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