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  • Electronic Resource  (2)
  • BMPs  (1)
  • Estradiol and progesterone  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 35 (1983), S. 609-614 
    ISSN: 1432-0827
    Keywords: Matrix-induced endochondral bone formation ; Estradiol and progesterone ; Ornithine decarboxylase ; Mesenchymal cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The influence of estradiol and progesterone, alone or in combination, on the discrete phases of matrix-induced endochondral bone formation was investigated. Administration of estradiol and progesterone in combination increased mesenchymal cell proliferation, as indicated by [3H] thymidine incorporaton into acid precipitable material. However, ornithine decarboxylase (ODC) activity was significantly suppressed by the combination of estradiol and progesterone. Also, this treatment did not influence the35SO4 incorporation into proteoglycans on day 7. Mineralization of newly induced bone was quantitated by alkaline phosphatase,45Ca incorporation into bone mineral and calcium content, and was found to be significantly increased by progesterone alone and in combination with estradiol in both matrix-induced plaques and tibial metaphysis. These results demonstrated the stimulatory role of progesterone in combination with estradiol in bone formation and mineralization.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 56 (1994), S. 192-195 
    ISSN: 0730-2312
    Keywords: bmne ; cartilage ; BMPs ; PDGF ; TGF-β ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The three ingredients for the successful tissue engineeping of bone and cartilage are ragulatory signals, cells and extracellular matrix. Recent advance in cellular and molecular biology of thde growth and differentiation factors have set the stage for a symbiosis of biotechnology and biomaterials. Recent advances permit one to enunciate the rules of architechure for tissue engineering of bone and cartilage. The purification and cloning of bone morphogenetic proteins (BMPs) and growth factors such as platelet derived growth factors (PDGF), tranforming growth factor-β (TGF-β), and insulin-like growth factors (IGF-I) Will allow the design of an optimal combinatiol of signals to initiate and promote development of skeletal stem cells into cartilage and bone. Successful and optimal bone and motion. BMPs function as inductive signals. Biomaterials (Both natural and synthetic) mimic the extracellular matrix and play a role in conduction of bone and cartiage. Examples of biomaterials include hydroxyapatite, polyanhydrides, polyphosphoesters, polylactic acid, and polyglycolic acid. The prospects for novel biomaterials are immense, and they likely will be a fertile erowth industpy. Cooperative ventures between academia and industry and teahnology transfer from the federal government augur well for an exciting future fop clinical applications.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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