Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
CALCIUM WAVES AND OSCILLATIONS IN EGGS
Autore:
SARDET C; ROEGIERS F; DUMOLLARD R; ROUVIERE C; MCDOUGALL A;
Indirizzi:
UPMC,URA 671,UNITE BIOL CELLULAIRE MARINE,STN ZOOL,OBSERV F-06230 VILLEFRANCHE MER FRANCE
Titolo Testata:
Biophysical chemistry
fascicolo: 1-2, volume: 72, anno: 1998,
pagine: 131 - 140
SICI:
0301-4622(1998)72:1-2<131:CWAOIE>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASCIDIAN EGG; MEIOSIS REINITIATION; ENDOPLASMIC-RETICULUM; INTRACELLULAR CA2+; MOUSE OOCYTES; CEREBRATULUS-LACTEUS; FIRST METAPHASE; MAMMALIAN EGGS; FIRST PROPHASE; FERTILIZATION;
Keywords:
CALCIUM; OSCILLATIONS; WAVES; FERTILIZATION; MEIOSIS; ASCIDIANS; MAMMALS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
57
Recensione:
Indirizzi per estratti:
Citazione:
C. Sardet et al., "CALCIUM WAVES AND OSCILLATIONS IN EGGS", Biophysical chemistry, 72(1-2), 1998, pp. 131-140

Abstract

Eggs from several protostomes (molluscs, annelids, nemerteans, etc.) and two deuterostomes (mammals and ascidians) display repetitive calcium signals. Oscillations in the level of intracellular calcium concentration are occasionally triggered by maturing hormones (as in some molluscs) and mostly observed after fertilization which occurs at different stages of the meiotic cell cycle (oocytes are arrested in prophase,metaphase I or metaphase II). In most eggs examined so far, calcium oscillations last until the end of meiosis just before male and female pronuclei form. This ability depends on the sensitivity of InsP3 channels and on the permeability of the plasma membrane to extracellular calcium. In eggs that undergo cytoplasmic reorganization at fertilization (annelids, nemerteans, ascidians, etc.) the repetitive calcium signals are waves that originate from localized cortical sites that become calcium waves pacemakers. In ascidians we have identified the site of initiation of repetitive calcium waves as an accumulation of endoplasmic reticulum sandwiched between the plasma membrane and an accumulation of mitochondria. We compare and discuss the generation of calcium signals in the different eggs, their relationship with the cell cycle and the possible roles they play during development. (C) 1998 Elsevier Science Ireland B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 00:07:30