hrp0082lbp-d3-1004 | (1) | ESPE2014

Methyl Donor Deficiency Impairs Pre-Osteoblast Differentiation Through PGC-1α Hypomethylation and Increased ERRα

Feigerlova Eva , Ewu Essi , Weryha Georges , Leininger Brigitte , Gueant Jean-Louis

Background and aims: Folate and vitamin B12 are methyl donors (MD) needed for the synthesis of methionine, which is the precursor of S-adenosylmethionine (SAM), the substrate of methylation in epigenetic, and epigenomic pathways. Low dietary intakes of folate and vitamin B12 are frequent, especially in pregnant women and in the elderly, and deficiency constitutes a risk factor for various diseases. The MD deficiency (MDD) leads to a decrease in SAM:SAH (S-ade...

hrp0084fc2.5 | Bone & Mineral Metabolism | ESPE2015

Methyl Donor Deficiency Impairs Differentiation of Pre-Osteoblasts Through Disruption of Functional Interaction Between Peroxisome Proliferator-Activated Receptor-Gamma Coactivator-1 Alpha and Vitamin D Receptor

Feigerlova Eva , Ghemrawi Rose , Melhelm Hassan , Battaglia-Hsu Shyuefang , Demarquet Lea , Weryha Georges , Rodriguez-Gueant Rosa-Maria , Gueant Jean-Louis

Background: Folate and cobalamin are needed for synthesis of methionine, a substrate of methylation in epigenetic, and epigenomic pathways. Methyl donor deficiency (MDD) leads to hyperhomocysteinemia, which has been related to osteoporosis in humans and disruption of epiphyseal cartilage and bone development in rodents. Recent studies have revealed evidence for association between 25(OH)D3 and homocysteine levels, however, underlying mechanisms remain elusive.<p...