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Titolo:
Activation of rabbit oocytes: the impact of the Ca2+ signal regime an development
Autore:
Ozil, JP; Huneau, D;
Indirizzi:
INRA, Unit BIol Dev & Biotechnol, F-78352 Jouy En Josas, France INRA JouyEn Josas France F-78352 technol, F-78352 Jouy En Josas, France
Titolo Testata:
DEVELOPMENT
fascicolo: 6, volume: 128, anno: 2001,
pagine: 917 - 928
SICI:
0950-1991(200103)128:6<917:AOROTI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORTICAL GRANULE EXOCYTOSIS; MESSENGER-RIBONUCLEIC-ACID; MAMMALIAN EGG ACTIVATION; IN-VITRO CULTURE; MOUSE EGGS; INOSITOL TRISPHOSPHATE; CALCIUM OSCILLATIONS; GENE-EXPRESSION; PARTHENOGENETIC DEVELOPMENT; INTRACELLULAR CA2+;
Keywords:
Ca2+ signal; oocyte activation; fertilization; parthenogenesis; rabbit;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
82
Recensione:
Indirizzi per estratti:
Indirizzo: Ozil, JP INRA, Unit BIol Dev & Biotechnol, F-78352 Jouy En Josas, France INRA Jouy En Josas France F-78352 F-78352 Jouy En Josas, France
Citazione:
J.P. Ozil e D. Huneau, "Activation of rabbit oocytes: the impact of the Ca2+ signal regime an development", DEVELOPMENT, 128(6), 2001, pp. 917-928

Abstract

Postfertilization manipulation of mammalian embryos results in various developmental alterations. To determine whether the manipulation of the Ca2+ regime causing oocyte activation is a valuable experimental means in helpingunderstand the biological process by which embryos integrate signals from outside and later regulate gene expression, we linked Ca2+ signal parameters i.e. amplitude, number and frequency, with the efficiency and quality of postimplantation development. Freshly ovulated rabbit oocytes were subjected to repetitive and modulated Ca2+ influx. The results provide three major pieces of information. Firstly, the Ca2+ stimulus is the most efficient signal activating mammalian eggs when it is applied in a repetitive manner, the amplitude being the crucial factor. Secondly, the dynamics of early cleavage does not appear to be determined by either the frequency or the amplitude of modulation of the Ca2+ signal that activates the oocyte. Thirdly, amplitude and temporal modulation of the Ca2+ signal in the early minutes influences the developmental performance and the morphology of the rabbit parthenogenetic conceptus at day 11.5 of pregnancy. The results demonstrate the importance of epigenetic events during postfertilization as well as the possible uses of Ca2+ modulation in studying long term developmental effects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 03:33:23