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Mechanisms of Egg Activation
Richard Nuccitelli,Gary N. Cherr,Wallis H. Clark +2 more
- 15 Apr 2013
75
TL;DR: Research over the past decade has yielded several breakthroughs in this field and most of them are discussed in this volume, including: electrical events accompanying sperm-egg interactions; signal transduction mechanisms in egg activation; metabolic co-activation.
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Abstract: Proceedings of the meeting held in Sept. 1988. Research over the past decade has yielded several breakthroughs in this field and most of them are discussed in this volume, including: electrical events accompanying sperm-egg interactions; signal transduction mechanisms in egg activation; metabolic co
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Citations
Intracellular pH increase driven by an Na+/H+ exchanger upon activation of surf clam oocytes.
TL;DR: Results show that a pHi increase, driven by a typical Na+/H+ exchanger, follows activation of surf clam oocytes but that this p Hi increase is neither sufficient nor required for GVBD, though it does allow its progression at an optimal rate.
25
Fertilization causes a single Ca2+ increase that fully depends on Ca2+ influx in oocytes of limpets (Phylum Mollusca, Class Gastropoda).
TL;DR: Ca2+ release and its propagating mechanisms are undeveloped in limpet oocytes and that Ca2+ influx is the only Ca2-mobilizing system available and functioning at fertilization.
24
Oocyte activation in invertebrates and humans.
TL;DR: Oocytes are metabolically repressed cells that, in most cases, require a signal from the fertilising spermatozoon to trigger activation.
23
Nurse egg origin in the polychaete Boccardia proboscidea (Spionidae)
Heidi L. Smith,Glenys D. Gibson +1 more
TL;DR: Nurse egg production in B. proboscidea is an active developmental process and not simply an artifact of sperm limitation, similar to those observed in apoptotic cells.
22
Thapsigargin induces meiotic maturation in surf clam oocytes.
TL;DR: It is established that thapsigargin-sensitive Ca2+ pools regulatingCa2+ fluxes exist in surf clam oocytes, and they also establish that Ca2- ions are the major initial trigger for meiosis resumption in this species.
22
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