Osteoclast‐like cell formation in fetal and newborn long‐term baboon marrow cultures is more sensitive to 1,25‐dihydroxyvitamin D3 than adult long‐term marrow cultures

N. Takahashi, G. R. Mundy, T. J. Kuehl, G. David Roodman

Resultado de la investigación: Articlerevisión exhaustiva

23 Citas (Scopus)

Resumen

It is unknown if osteoclasts derived from animals at different developmental stages differ. To study this question, we used a long‐term baboon marrow culture system in which osteoclast‐like multinucleated cells (MNC) are formed. Fetal, newborn, or adult baboon marrow cultures were tested to determine if they differ in their responsiveness to osteotropic hormones. In fetal and newborn marrow cultures 1,25‐dihydroxyvitamin D3 (1,25D3) at 10−10 M significantly increased MNC formation with a maximal effect seen at 10−9 M. Higher concentrations of 1,25D3 progressively decreased MNC formation. In contrast, in adult baboon marrow cultures, 10−9 M 1,25D3 was required to significantly increase MNC formation, with a maximal affect at 10−8 M 1,25D3. Calcitonin (25–200 ng/ml) inhibited MNC formation in fetal, newborn, or adult baboon marrow cultures treated with 1,25D3 in an identical manner. The effects of 1,25D3 on granulocyte‐macrophage progenitor cells (CFU‐GM), the probable precursors of MNC, were identical in fetal and adult baboon marrow cultures, with a significant inhibition of CFU‐GM colony formation at 10−8 M 1,25D3. These results suggest that 1) osteoclast precursors are more sensitive to some osteotropic hormones during the fetal and newborn periods, and 2) differences in the 1,25D3 sensitivity of osteoclast‐like MNC formation in fetal, newborn, and adult baboon marrow cultures are not due to effects on early proliferating precursors but may result from effects of 1,25D3 on fusion of later precursors for MNC.

Idioma originalEnglish (US)
Páginas (desde-hasta)311-317
Número de páginas7
PublicaciónJournal of Bone and Mineral Research
Volumen2
N.º4
DOI
EstadoPublished - ago. 1987

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Orthopedics and Sports Medicine

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