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Article Dans Une Revue Current Biology - CB Année : 1995

Function and characteristics of repetitive calcium waves associated with meiosis

Résumé

Background Results Imaging free intracellular calcium in ascidian eggs The periodic post-activation calcium waves become progressively localized to a pacem region The ER-rich domain in the contraction pole becomes the calcium waves' pacemaker Late periodic post-activation calcium waves propagate preferentially in the egg cortex Late periodic post-activation calcium waves take longer to cross the egg due to their c path Periodic post-activation calcium waves are necessary for the completion of meiosis II Discussion Progressive localization of early post-activation calcium waves An ER-rich domain in the contraction pole becomes the pacemaker of latter calcium w Cortically propagating calcium waves A possible function for the periodic post-activation calcium waves in ascidian and mam eggs Conclusions Materials and methods Biological material and chemicals Microinjection technique Imaging intracellular calcium Acknowledgements References Copyright Backgound Internal calcium waves and oscillations are now recognized as universal features of cellular activation, but their exact role remains uncertain. In mammalian and ascidian eggs, a large triggered calcium activation wave crosses the egg at fertilization, followed by a series of pe increases in intracellular calcium concentration ([Ca 2+ ] i). We have previously shown that, i
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Dates et versions

hal-03025661 , version 1 (26-11-2020)

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Alex Mcdougall, Christian Sardet. Function and characteristics of repetitive calcium waves associated with meiosis. Current Biology - CB, 1995, 5 (3), pp.318-328. ⟨10.1016/s0960-9822(95)00062-5⟩. ⟨hal-03025661⟩
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