Involvement of purine nucleotide synthetic pathways in gonadotropin‐induced meiotic maturation in mouse cumulus cell‐enclosed oocytes

SM Downs - Molecular Reproduction and Development …, 1997 - Wiley Online Library
… induced maturation by means other than serving as a de novo synthesis and purine nucleotide
utilization help drive meiotic maturation in response to gonadotropin. nucleotide precursor…

Purine control of mouse oocyte maturation: evidence that nonmetabolized hypoxanthine maintains meiotic arrest

SM Downs - Molecular Reproduction and Development, 1993 - Wiley Online Library
… and negative feedback on purine de novo synthesis, … this purine base on meiotic maturation.
The data therefore suggest that nonrnetabolized hypoxanthine IS responsible for the meiotic

Adenosine blocks hormone‐induced meiotic maturation by suppressing purine de novo synthesis

SM Downs - Molecular Reproduction and Development …, 2000 - Wiley Online Library
… of purine nucleotide synthetic pathways in gonadotropin-induced meiotic maturation in mouse
… Inhibitory effect of purines in meiotic maturation of denuded oocytes. Mol Reprod Dev 31:…

Inhibitory effect of purines in meiotic maturation of denuded mouse oocytes

C Shim, DK Lee, CC Lee, WK Cho… - … and development, 1992 - Wiley Online Library
… role of purines such as hypoxanthine and adenosine in the maintenance of oocyte meiotic
arrest… , a possible action mechanism of purines in oocyte meiotic maturation was investigated. …

Induction of meiotic maturation in mouse oocytes by adenosine analogs

SM Downs, J Chen - Molecular reproduction and development, 2006 - Wiley Online Library
… Involvement of purine nucleotide synthetic pathways in gonadotropin-induced meiotic
maturation in mouse cumulus cellenclosed oocytes. Mol Reprod Dev 46:155–167. Downs SM. …

Regulation of meiotic maturation

FJ Richard - Journal of animal science, 2007 - academic.oup.com
… of the first meiotic division before induction of maturation by the preovulatory LH surge. In
vitro, oocyte maturation occurs spontaneously. The first meiotic arrest is characterized by a …

Factors affecting the resumption of meiotic maturation in mammalian oocytes

SM Downs - Theriogenology, 1993 - Elsevier
… follicular development a dramatic flux in purine metabolism … maintain meiotic arrest when
the GMPgenerating arm of the purine … mice have sufficient levels to prevent meiotic resumption. …

Maintenance of meiotic arrest in mouse oocytes by purines: modulation of cAMP levels and cAMP phosphodiesterase activity

SM Downs, SAJ Daniel, EA Bornslaeger… - Gamete …, 1989 - Wiley Online Library
… Some experiments were designed to correlate complex and oocyte cAMP with meiotic
maturation. At the end of the 3 hr incubation, oocytes were examined for the presence or absence …

[HTML][HTML] Characterization of metabolic patterns in mouse oocytes during meiotic maturation

L Li, S Zhu, W Shu, Y Guo, Y Guan, J Zeng, H Wang… - Molecular cell, 2020 - cell.com
… via PUFAs catabolism for a possible autocrine function to promote meiotic maturation. … for
meiotic maturation, we asked whether elevating PUFA availability disrupts oocyte maturation. …

Uptake and metabolism of adenosine mediate a meiosis‐arresting action on mouse oocytes

SM Downs - Molecular Reproduction and Development …, 1999 - Wiley Online Library
… For some oocyte maturation experiments, the degree of inhibitory synergism between two
different purines in maintaining meiotic arrest was determined by calculating a synergism …