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Bone Cells May Play a Part in Metabolism
from Scientific American
Insulin, the well-known blood sugar hormone, may have a newly discovered function in the body that will rattle your bones--regulating skeletal growth and breakdown.
Two new studies published online July 22 in Cell show that insulin stimulates both bone building and breakdown in mice through the hormone's effects on two types of bone cells: bone-building osteoblasts and bone-resorbing osteoclasts.
What's more, these cells are involved in an intricate hormonal loop that in turn regulates not only insulin production, but also blood sugar levels and energy metabolism. The studies suggest that the skeleton may be an important regulator of whole-body energy metabolism, joining the ranks of known metabolic regulators such as muscle and fat.
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