Mechanism of citrinin-induced dysfunction of mitochondria. IV--Effect on Ca2+ transport.

Abstract:

:The effect of citrinin on Ca2+ transport was studied in isolated kidney cortex and liver mitochondria, and baby hamster kidney cultured cells. The mycotoxin significantly inhibited the activity of 2-oxoglutarate and pyruvate dehydrogenases in both kidney cortex and liver mitochondria. Citrinin promoted a decrease in the velocity and in the total capacity of Ca2+ uptake, in both mitochondria. Apparently, citrinin acts by a mechanism similar to ruthenium red. In intact cultured cells, citrinin also had a preferential effect on mitochondrial Ca2+ fluxes. Citrinin promoted a marked decrease in the Ca2+ level in the mitochondrial matrix, whereas that of the extramitochondiral fraction became less affected. All the observed effects were dependent on the citrinin concentration.

journal_name

Cell Biochem Funct

authors

Chagas GM,Oliveira MA,Campello AP,Kluppel ML

doi

10.1002/cbf.290130110

subject

Has Abstract

pub_date

1995-03-01 00:00:00

pages

53-9

issue

1

eissn

0263-6484

issn

1099-0844

journal_volume

13

pub_type

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