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- W2060423611 abstract "The present studies showed that sequential treatment with equine CG (eCG) and hCG not only induced an increase in ovarian weight, but also caused an estimated 4.6-fold increase in the number of ovarian surface epithelial cells. In addition, eCG-hCG treatment increased ovarian hepatocyte growth factor (HGF) messenger RNA levels. These studies also demonstrated that rat primary ovarian surface epithelial cells as well as a cell line derived from rat ovarian surface epithelium (i.e. ROSE-179 cells) do not express the LH (hCG) receptor. Both of these cells express c-Met, the receptor for HGF. To assess the effects of hCG and HGF on ovarian surface epithelial cell mitosis, ROSE-179 cells were cultured for 24 h in serum-supplemented medium on either glass or the synthetic fibronectin-like extracellular matrix protein, pronectin (RGD). The cells were then cultured for 24 h in serum-free medium in the presence or absence of hCG or HGF. The numbers of cells at 2, 24, and 48 h of culture were determined. The percentage of apoptotic cells was assessed by in situ DNA staining at 48 h of culture. In the serum-supplemented medium in the presence or absence of RGD, the number of ROSE-179 cells doubled. In serum-free medium, cell proliferation was reduced, and the percentage of apoptotic nuclei ranged between 10–15% regardless of the substrate. Neither mitosis nor apoptosis was influenced by hCG in the presence or absence of RGD. For ROSE-179 cells cultured in serum-free medium on RGD, HGF induced mitosis, resulting in a 2.8 ± 0.2-fold increase in cell number compared with the 24 h control values. On a glass substrate in serum-free medium, HGF did not induce mitosis, but increased the percentage of apoptotic nuclei. Time-lapse photographic analysis revealed that on RGD, cells undergoing HGF-induced mitosis showed a transient reduction in cell contact. On glass, HGF caused many cells to completely lose contact and separate from each other. Collectively, these data suggest that in vivo gonadotropins stimulate HGF expression and ovarian surface epithelial cell proliferation. Based on in vitro studies, it is likely that the mitogenic action of hCG is mediated by HGF. However, HGF only induces mitosis in the presence of an extracellular matrix." @default.
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- W2060423611 date "1999-06-01" @default.
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- W2060423611 title "Hepatocyte Growth Factor Induces Rat Ovarian Surface Epithelial Cell Mitosis or Apoptosis Depending on the Presence or Absence of an Extracellular Matrix*" @default.
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- W2060423611 doi "https://doi.org/10.1210/endo.140.6.6773" @default.
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