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Synergistic effect of parathyroid hormone and growth hormone on trabecular and cortical bone formation in

Maria Sarah N Guevarra1, James K Yeh, Mariano Castro Magana

  • 1Department of Pediatric Endocrinology, Winthrop University Hospital, Mineola, NY 11501, USA. snguevarra@yahoo.com

Hormone Research in Paediatrics
|March 11, 2010
PubMed

Insights

Growth hormone (GH) and parathyroid hormone (PTH) combination therapy significantly improves bone growth and bone formation. This combined treatment offers a synergistic effect, enhancing bone density and mass in pediatric patients with growth deficiencies.

Area of Science:

  • Endocrinology
  • Bone Biology
  • Pediatric Endocrinology

Background:

  • Growth hormone (GH) deficiency in children causes short stature and osteopenia.
  • Parathyroid hormone (PTH) plays a crucial role in bone metabolism.
  • Investigating the combined effects of GH and PTH on bone health is essential.

Purpose of the Study:

  • To evaluate the synergistic effects of combined growth hormone (GH) and parathyroid hormone (PTH) therapy on bone growth and formation.
  • To determine if combined GH and PTH treatment can improve bone mineral content and density.

Main Methods:

  • Forty female rats underwent hypophysectomy and were divided into four groups: control, GH only, PTH only, and combined GH + PTH.
  • Treatment duration was 4 weeks, with daily subcutaneous administration of GH and/or PTH.
  • Bone growth, bone mineral content (BMC), bone mineral density (BMD), and bone formation/resorption markers were assessed.

Main Results:

  • GH administration increased body weight, bone growth, BMC, and BMD.
  • PTH increased BMC and BMD but did not significantly affect bone size.
  • Combined GH and PTH treatment demonstrated synergistic effects, increasing trabecular, periosteal, and endocortical bone formation while suppressing bone resorption, leading to increased bone volume and BMD.

Conclusions:

  • Combined therapy with GH and PTH significantly enhances bone growth and formation.
  • The combination treatment effectively decreases bone resorption.
  • Synergistic effects of GH and PTH lead to increased bone density and bone mass, offering a promising therapeutic strategy.
Abstract

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