Journal article

Mechanisms of palmitate-induced lipotoxicity in osteocytes

Ahmed Al Saedi, Sandra Bermeo, Lilian Plotkin, Damian E Myers, Gustavo Duque

Bone | ELSEVIER SCIENCE INC | Published : 2019

Abstract

BACKGROUND: Lipotoxicity is defined as cellular toxicity observed in the presence of an abnormal accumulation of fat and adipocyte-derived factors in non-fat tissues. Palmitic acid (PA), an abundant fatty acid in the bone marrow and particularly in osteoporotic bones, affects osteoblastogenesis and osteoblast function, decreasing their survival through induction of apoptosis and dysfunctional autophagy. In this study, we hypothesized that PA also has a lipotoxic effect on osteocytes in vitro. METHODS: Initially, we tested the effect of PA on osteocyte-derived factors DKK1, sclerostin and RANKL. Then, we tested whether PA affects survival and causes apoptosis in osteocytes. Subsequently, we i..

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Grants

Awarded by Australian National Health and Medical Research Council


Funding Acknowledgements

This study was supported by the Australian National Health and Medical Research Council (NHMRC 632767), the Nepean Medical Research Foundation, and the Australian Institute for Musculoskeletal Science (AIMSS).