Neuronal ageing in long-term cultures: alterations of Ca2+ homeostasis.

Abstract:

:Deficiencies of Ca2+ homeostasis are proposed to play an important role in neuronal ageing and/or neurodegeneration. The aim of this study was to investigate, in a defined neuronal population, primary cerebellar granule neuron culture, the time-dependent changes in Ca2+ homeostasis and compare them with data obtained in cerebellar brain slices from aged rats. In neurons aged in culture (DIV 23), a small decrease in the resting [Ca2+]i was associated with a decrease in the maximal rate of [Ca2+]i increase upon KCl-induced depolarization and in the amplitude of the [Ca2+]i response, when compared with mature neurons (DIV 9). The most significant change of [Ca2+]i signal parameters was a 50% decrease in the rate of [Ca2+]i recovery after the stimulation. These results were similar to those obtained in aged brain slices, and indicate that primary neuronal cultures could serve as a model for studying the age-related changes in Ca2+ homeostasis.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Toescu EC,Verkhratsky A

doi

10.1097/00001756-200011270-00027

subject

Has Abstract

pub_date

2000-11-27 00:00:00

pages

3725-9

issue

17

eissn

0959-4965

issn

1473-558X

journal_volume

11

pub_type

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