1 Ocak 2016 Dergi makalesi Açık Erişim

Arikan, S.; Kalender, H.; Simsek, O.

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    <subfield code="a">Effects of dbcAMP on progesterone synthesis by cultured goat luteal cell subpopulations isolated from early and late luteal stage corpora lutea</subfield>
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    <subfield code="a">This research aimed to investigate the effects of dbcAMP on steroid accumulation by culturing two distinct luteal cell subpopulations isolated from early and late luteal stage corpora lutea. Cells were isolated from corpora lutea collected from eight Angora goats on either the 5th or 15th days of their estrous cycles. Cell isolation was performed by enzymatic digestion using collagenase and DNase. Isolated cells were separated into two distinct subpopulations enriched with small and large luteal cells by percoll density-gradient centrifugation. Isolated cells were stained in order to detect 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD). Cells stained positively for 3 beta-HSD activity (5 x 10(4) cell/well) were incubated with dbcAMP in the absence or presence of 22(R)-hydroxycholesterol (22R-HC) for periods of up to 7 days. Large luteal cell enriched subpopulations produced more basal progesterone (P &amp;lt; 0.05) than did the small luteal cell enriched subpopulations. Treatment of cells with 22R-HC alone induced 4.00 to 11.60 times increase in steroid synthesis depending on type of cells incubated, luteal age and days of incubation. Incubation of cells with 1 mM dbcAMP in the absence or presence of 22R-HC induced in a significant increase (P &amp;lt; 0.01) in steroid accumulation in all treated groups. In contrast, when cells are treated with low dose dbcAMP (0.1 mM), treatment induced stimulation failed to reach significant level in most treated groups. In conclusion, although treatment of goat luteal cells with dbcAMP induces an increase in steroid accumulation, a high dose is necessary to reach significant levels. Stimulatory effect of dbcAMP on steroidogenesis maintains during long life culturing.</subfield>
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    <subfield code="u">Kirikkale Univ, Fac Vet Med, Dept Obstetr &amp; Reprod Dis, Kirikkale, Turkey</subfield>
    <subfield code="a">Kalender, H.</subfield>
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    <subfield code="u">Kirikkale Univ, Fac Vet Med, Dept Physiol, Kirikkale, Turkey</subfield>
    <subfield code="a">Simsek, O.</subfield>
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    <subfield code="u">Kirikkale Univ, Fac Vet Med, Dept Physiol, Kirikkale, Turkey</subfield>
    <subfield code="a">Arikan, S.</subfield>
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