Journal
ANNALS OF ANATOMY-ANATOMISCHER ANZEIGER
Volume 183, Issue 3, Pages 223-227Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/S0940-9602(01)80221-1
Keywords
articular cartilage; estrogen receptor alpha; immunodetection; osteoarthritis
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Clinical observations suggest that estrogens are involved in the pathogenesis of postmenopausal osteoarthritis, but only little is known about the influence of these hormones on articular cartilage cells. The effect of estradiol is mediated by estrogen receptors alpha and beta. The goal of the present study was to search for estrogen receptor alpha in articular tissue from cows, pigs and humans by immunohistochemistry to form a basis for in vitro studies. In addition, we also tried to detect estrogen receptor alpha in cultivated articular chondrocytes from cows and bulls under certain culture conditions. Estrogen receptor alpha is detected by the use of antibody 13H2 in articular chondrocytes from cows, bulls, pigs and humans. Chondrocytes are physiologically exposed to reduced oxygen tension. In isolated articular chondrocytes from cows and bulls incubated either with 21% O-2 or With 5% O-2 positive cells were also found. These positive results therefore encourage testing the influence of estradiol on cultivated articular cartilage cells in these species under different culture conditions.
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