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Front Endocrinol (Lausanne). 2018 May 14;9:236. doi: 10.3389/fendo.2018.00236. eCollection 2018.

Adiponectin Reduces Bone Stiffness: Verified in a Three-Dimensional Artificial Human Bone Model .

Frontiers in endocrinology

Sigrid Haugen, Jianying He, Alamelu Sundaresan, Astrid Kamilla Stunes, Kristin Matre Aasarød, Hanna Tiainen, Unni Syversen, Bjørn Skallerud, Janne Elin Reseland

Affiliations

  1. Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Oslo, Norway.
  2. Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
  3. Department of Biology, Texas Southern University, Houston, TX, United States.
  4. Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
  5. St. Olav's University Hospital, Trondheim, Norway.
  6. Department of Endocrinology, St. Olav's University Hospital, Trondheim, Norway.

PMID: 29867768 PMCID: PMC5960720 DOI: 10.3389/fendo.2018.00236

Abstract

Primary human osteoblasts and osteoclasts incubated in a rotating coculture system without any scaffolding material, form bone-like tissue that may be used to evaluate effects of various compounds on mechanical strength. Circulating adiponectin has been found to be negatively associated with BMD and strength and was therefore assessed in this system. Osteospheres of human osteoblasts and osteoclasts were generated with and without adiponectin. The osteospheres were scanned using micro-computed tomography, the mechanical properties were tested by flat punch compression using nanoindentation equipment, and the cellular morphology characterized by microscopy. The association between autologously produced adiponectin and biomechanical properties was further evaluated by quantitation of adiponectin levels using quantitative polymerase chain reaction (qPCR) and immunoassays, and identification of stiffness by bending test of rat femurs. The molecular mechanisms were examined

Keywords: adiponectin; bone remodeling; bone stiffness; osteospheres; three-dimensional culturing system

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