Title : Sites of interaction between epidermal growth factor and transforming growth factor-beta 1 in the control of steroidogenesis in cultured porcine Leydig cells.

Pub. Date : 1992 Mar

PMID : 1531626






4 Functional Relationships(s)
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1 Second, EGF, TGF beta 1, and EGF plus TGF beta 1 significantly (P less than 0.001) increased delta 5-steroid intermediate (i.e. pregnenolone and DHEA), but not delta 4-steroid intermediate (i.e. progesterone and androstenedione), conversion into testosterone, indicating that the growth factors increased, individually or in combination in an additive manner, 3 beta HSDI activity (respectively, 90.7 +/- 0.6%, 80.6 +/- 2.6%, and 164 +/- 4.5% increase in the presence of EGF, TGF beta 1, and EGF plus TGF beta 1). Pregnenolone epidermal growth factor Homo sapiens
2 Second, EGF, TGF beta 1, and EGF plus TGF beta 1 significantly (P less than 0.001) increased delta 5-steroid intermediate (i.e. pregnenolone and DHEA), but not delta 4-steroid intermediate (i.e. progesterone and androstenedione), conversion into testosterone, indicating that the growth factors increased, individually or in combination in an additive manner, 3 beta HSDI activity (respectively, 90.7 +/- 0.6%, 80.6 +/- 2.6%, and 164 +/- 4.5% increase in the presence of EGF, TGF beta 1, and EGF plus TGF beta 1). Pregnenolone epidermal growth factor Homo sapiens
3 Second, EGF, TGF beta 1, and EGF plus TGF beta 1 significantly (P less than 0.001) increased delta 5-steroid intermediate (i.e. pregnenolone and DHEA), but not delta 4-steroid intermediate (i.e. progesterone and androstenedione), conversion into testosterone, indicating that the growth factors increased, individually or in combination in an additive manner, 3 beta HSDI activity (respectively, 90.7 +/- 0.6%, 80.6 +/- 2.6%, and 164 +/- 4.5% increase in the presence of EGF, TGF beta 1, and EGF plus TGF beta 1). Pregnenolone epidermal growth factor Homo sapiens
4 Second, EGF, TGF beta 1, and EGF plus TGF beta 1 significantly (P less than 0.001) increased delta 5-steroid intermediate (i.e. pregnenolone and DHEA), but not delta 4-steroid intermediate (i.e. progesterone and androstenedione), conversion into testosterone, indicating that the growth factors increased, individually or in combination in an additive manner, 3 beta HSDI activity (respectively, 90.7 +/- 0.6%, 80.6 +/- 2.6%, and 164 +/- 4.5% increase in the presence of EGF, TGF beta 1, and EGF plus TGF beta 1). Pregnenolone epidermal growth factor Homo sapiens