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Immunocytochemical studies of hamster oocyte activation
Molecular Reproduction and Development, 1990AbstractBy indirect immunofluorescence, using rabbit anti‐heparin‐binding placental protein (HBPP) antiserum, we studied HBPP expression by physiologically and non‐physiologically (microsurgically) activated hamster gametes. Whereas mature gametes (sperm, metaphase II oocytes) were negative, in vivo conceived preimplantation embryos, from pronuclear to
M J, Sinosich +2 more
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Mammalian Oocytes: X Chromosome Activity
Science, 1969The glucose-6-phosphate dehydrogenase and lactate dehydrogenase contents of oocytes from XO and XX female mice have been measured. The activity of the former in the oocytes of XO mice is half of that in the oocytes of XX mice, whereas the lactate dehydrogenase activities in the two groups of ova are the same.
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Sperm-activated channels in ascidian oocytes
Developmental Biology, 1984Ionic channels activated during fertilization in the ascidian oocyte membrane have been studied using the single-channel recording technique. These channels, which we have called "fertilization channels," have a single-channel conductance of about 400 pS, a reversal potential of about O mV, and an open time of 2-30 msec. The open channel probability is
B, Dale, L, De Felice
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Activation of cumulus‐free mouse oocytes
Molecular Reproduction and Development, 1990AbstractAttempts were made to activate parthenogenetically oocytes from randombred mice under conditions required for nuclear transfer, viz. in the absence of cumulus cells. Of the large number of stimulants previously described and presumed to be generally effective, only exposure to strontium ion (as a replacement for calcium ion in the medium), or ...
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Spontaneous and induced activation of rat oocytes
Molecular Reproduction and Development, 1991AbstractOvulated rat oocytes undergo spontaneous activation during in vitro culture. After extrusion of the second polar body, they do not enter interphase but are arrested again in next metaphase‐like stage (M III arrest). The present study demonstrates that puromycin and chloral hydrate can trigger transition to interphase of metaphase II and ...
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Activation of Oocytes After Nuclear Transfer
2006After nuclear transfer, the recipient oocyte must be stimulated to initiate development. This stimulation is achieved by inducing changes in the oocyte cytoplasm that normally are triggered by the sperm during fertilization. In most cases, such changes include a transient increase in the intracellular-free calcium concentration induced by an electrical
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Activation of 1-methyladenosine by starfish oocytes
Experimental Cell Research, 1972Abstract Meiotic maturation in starfish oocytes is initiated by the purine base 1-methyladenine but not the nucleoside (1-methyladenosine) of this compound. The extent to which this may be the result of inaccessibility of 1-methyladenosine to cellular sites was investigated.
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Lactate dehydrogenase activity in oocytes
Experimental Cell Research, 1967R G, Kessel, E G, Ellgaard
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Artificial oocyte activation and intracytoplasmic sperm injection
Fertility and Sterility, 2010Marziyeh Tavalaee +2 more
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