## Abstract Cytogenetic data are presented which indicate species differences in the response of oocytes maturing in vitro in the presence of dibutyryl cyclic AMP (dbcAMP). Inhibition of ewe oocyte maturation was noted at germinal vesicle, MI, and MII in the presence of 25β750 ΞΌg/ml of dbcAMP. Cow
Meiotic maturation of the mammalian oocyte in vitro: Effect of dibutyryl cyclic AMP on protein synthesis
β Scribed by Stern, Samuel ;Wassarman, Paul M.
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 283 KB
- Volume
- 189
- Category
- Article
- ISSN
- 0022-104X
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β¦ Synopsis
Abstract
Mouse oocytes arrested in dictyate of the first meiotic prophase by dibutyryl cyclic AMP accumulated exogenous valine at the same rate as oocytes undergoing meiotic maturation. The apparent rate of protein synthesis and the spectrum of proteins synthesized were not significantly affected by the presence of dibutyryl cyclic AMP in the culture system. These results suggest that cytoplasmic maturation of the mammalian oocyte proceeds independently of nuclear progression during the period required for completion of the first meiotic division in vitro.
π SIMILAR VOLUMES
## Abstract The effects of dibutyryl cyclic AMP on the maturation of the mouse oocyte in vitro were studied. It was found that concentrations of 100 ΞΌg/ml or greater prevented germinal vesicle breakdown in more than 95% of the treated oocytes. The inhibition of maturation was found to be a reversib
## Abstract In sufficient concentration, dibutyryl cAMP (DBC) prevents the spontaneous in vitro maturation of mouse oocytes. The effects of luteinizing hormone (LH) and follicle stimulating hormone (FSH) on this inhibition were tested in an oilβfree chamberβslide culture system. Mouse oocytes devoi
## Abstract The inhibitory effect of dithiothreitol on meiotic maturation of mouse oocytes in vitro is a function of the intracellular dibutyryl cyclic AMP concentration. Inhibition of nuclear (germinal vesicle) breakdown by dibutyryl cyclic AMP is reversed upon transfer of oocytes to plain culture
## Abstract The results of the present study demonstrate the probable involvement of adenosine 3β²,5β²βcyclic monophosphate (cAMP)βdependent protein kinase (PKA) in the regulation of oocyte maturation in the catfish, __Clarias batrachus__. A decrease in total PKA activity with a concomitant increase
## Abstract The prognosis of pancreatic cancer is very poor because of its high malignant potential. To improve the prognosis of pancreatic cancer, a decrease in the grade of maligancy by dibutyryl cyclic AMP (dbβcAMP), a differentiation inducer, was attempted using human pancreatic cancer cell lin