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  • Parathyroid hormone...

Parathyroid hormone based medicine future of prevention and treatment of osteoporosis

Written By : Dr. Kamal Kant Kohli Published On 2022-12-15T05:00:01+05:30  |  Updated On 15 Dec 2022 11:09 AM IST
Parathyroid hormone based medicine future of prevention and treatment of osteoporosis
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Orally available therapies are desperately needed to stimulate bone formation for patients with osteoporosis. At present parathyroid hormone to stimulate bone formation in patients with osteoporosis are only effective when administered by daily injection.

A team led by investigators at Massachusetts General Hospital (MGH) recently identified a promising compound that influences components of the parathyroid hormone signaling pathway and that, when given orally to mice, increases bone mass. The group's discovery, which is published in PNAS, might lead to a new, more convenient drug for preventing and treating osteoporosis.

"Currently there are no orally available medications for osteoporosis that stimulate bone formation. We sought to develop such medications based upon our detailed understanding of the pathways that normally govern bone production," says senior author Marc Wein, MD, PhD, an endocrinologist at MGH and an Assistant Professor of Medicine at Harvard Medical School.

The pathway that involves parathyroid hormone inhibits salt-inducible kinase isoforms 2 and 3 (SIK2 and SIK3), which are enzymes with roles in the regulation of bone growth and remodeling.

Wein and his colleagues generated a novel structural model of these enzymes and then used advanced methods including structure-based drug design and iterative medicinal chemistry to identify a compound that potently inhibits SIK2 and SIK3. This compound, termed SK-124, had parathyroid hormone–like effects when given to cells and, most importantly, when fed to mice. In mice, oral treatment once a day for three weeks increased blood levels of calcium and vitamin D and also boosted bone formation and bone mass without evidence of short-term toxicity.

"Based on these findings, we propose that small molecules like SK-124 might represent 'next generation' oral bone building therapies for osteoporosis," says Wein. "We are currently collaborating with a pharmaceutical company-Radius Health, Inc-to further optimize and develop this compound into a treatment for patients."

Reference:

Tadatoshi Sato, Christian D. Castro Andrade, Sung-Hee Yoon, Yingshe Zhao, William J. Greenlee, Patricia C. Weber, Usha Viswanathan, John Kulp, Daniel J. Brooks, Marie B. Demay, Mary L. Bouxsein, Beate Lanske, Marc N. Wein https://doi.org/10.1073/pnas.2214396119

Proceedings of the National Academy of SciencesParathyroid hormoneosteoporosisbone growthcalciumvitamin D
Source : Proceedings of the National Academy of Sciences
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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