Expression of classical mediators in hearts of rats with hepatic dysfunction1

Liver cirrhosis is associated with impairment of cardiovascular function including alterations of the heart innervation, humoral and nervous dysregulation, changes in systemic circulation and electrophysiological abnormalities. Choline acetyltransferase (ChAT), enzyme forming acetylcholine, tyrosine...

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Published in:Canadian journal of physiology and pharmacology 2017, Vol.95 (11), p.1351-1359
Main Authors: Jarkovska, Dagmar, Bludovska, Monika, Mistrova, Eliska, Krizkova, Vera, Kotyzova, Dana, Kubikova, Tereza, Slavikova, Jana, Erek, Sumeyye Nur, Djordjevic, Aleksandar, Chottova Dvorakova, Magdalena
Format: Article
Language:English
Subjects:
bile duct ligation
cardiomyopathie cirrhotique
catecholamines
catécholamines
cirrhotic cardiomyopathy
cœur
heart
intracardiac nervous system
ligature du conduit cholédoque
lipid peroxidation
peroxydation lipidique
système nerveux intracardiaque
thioacetamide
thioacétamide
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Summary:Liver cirrhosis is associated with impairment of cardiovascular function including alterations of the heart innervation, humoral and nervous dysregulation, changes in systemic circulation and electrophysiological abnormalities. Choline acetyltransferase (ChAT), enzyme forming acetylcholine, tyrosine hydroxylase (TH), and dopamine-β-hydroxylase (DBH), enzymes participating in noradrenaline synthesis, are responsible for the production of classical neurotransmitters, and atrial natriuretic peptide (ANP) is produced by cardiomyocytes. The aim of this study was to evaluate the influence of experimentally induced hepatic dysfunction on the expression of proANP, ChAT, TH, and DBH in the heart. Hepatic dysfunction was induced by application of thioacetamide (TAA) or by ligation of bile duct. Biochemical parameters of hepatic injury and levels of peroxidation in the liver and heart were measured. Liver enzymes measured in the plasma were significantly elevated. Cardiac level of peroxidation was increased in operated but not TAA group animals. In the left atrium of operated rats, the expression of TH and DBH was lower, while expression of ChAT remained unchanged. In TAA group, no significant differences in the expression of the genes compared to controls were observed. Liver injury induced by ligation leads to an imbalance in the intracardiac innervation, which might impair nervous control of the heart.
ISSN:0008-4212
1205-7541
DOI:10.1139/cjpp-2017-0060