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osteoimmunology

Microbiome critical for bone hormone action

Intestinal microbes are necessary for the actions of an important hormone regulating bone density, according to two papers from the Emory Microbiome Research Center. The papers represent a collaboration between Roberto Pacifici, MD and colleagues in the Department of Medicine and laboratory of Rheinallt Jones, PhD in the Department of Pediatrics.

Together, the results show how probiotics or nutritional supplementation could be used to modulate immune cell activity related to bone health. The two papers, published in Nature Communications and Journal of Clinical Investigation, are the first reports of a role for intestinal microbes in the mechanism of action of PTH (parathyroid hormone), Pacifici says.

PTH increases calcium levels in the blood and can either drive bone loss or bone formation, depending on how it is produced or administered. Continuous excessive production of PTH, or primary hyperparathyroidism, is a common endocrine cause of osteoporosis. Yet in another context, intermittent external PTH stimulates bone formation, and is an FDA-approved treatment for osteoporosis – also used off-label for fracture repair in athletes. Read more

Posted on by Quinn Eastman in Immunology Leave a comment