## Abstract It has been demonstrated that the effect of GH on bone tissue is reduced with aging. In this study we tested the hypothesis that the action of GH on osteoblastic cells is donorβageβdependent by investigating the effect of GH on the development of osteoblastic phenotype in cultures of ce
Effect of donor age on the growth in vitro of cells obtained from human trabecular bone
β Scribed by Dr. Carol E. Evans; Charles S. B. Galasko; Carol Ward
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 318 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0736-0266
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β¦ Synopsis
Abstract
The proliferation of human boneβderived cells (BDCs) was assessed in vitro, using [^3^H]thymidine incorporation and cell counting in a haemacytometer. The cells were cultured from human trabecular bone from 87 patients aged 2β88 years. The in vitro growth of these cells was unaffected by the chronological age of the donor. However, the cell number at confluence was shown to decrease with increasing donor age, this trend being most marked after 60 years of age. Other assays of the metabolic efficiency of the BDCs, namely, total protein, osteocalcin, and alkaline phosphatase synthesis, did not show any change with increasing donor age. These results suggest that while the ability of individual cells to divide and to perform specific synthetic activities is unimpaired with increasing age, other subtler changes may occur, leading to a decrease in the bone's osteogenic capacity.
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