Developmental changes in mRNA encoding cardiac Na+/H+ exchanger (NHE-1) in rabbit.
Biochem Biophys Res Commun
; 212(3): 960-7, 1995 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-7626137
ABSTRACT
The faster recovery of cardiac contractility in newborn rabbit hearts during acute acidosis compared to adult hearts correlates with greater cellular activity of the Na+/H+ exchanger. We quantified mRNA encoding Na+/H+ exchanger-1 (NHE-1) in rabbit ventricles of fetal (27 days gestation), newborn (2-5 days), and adult (> 6 months) New Zealand white rabbits using reverse transcription-polymerase chain reaction (RT-PCR) and RNase protection assay, with GAPD mRNA as standard. Both RT-PCR and RNase protection assay revealed similar (p > 0.05) cardiac levels of NHE-1 mRNA in fetal and newborn hearts, while NHE-1 mRNA in these hearts was 1.7x and 1.6x greater than in adult hearts by both RT-PCR and RNase protection assay. These developmental changes in NHE-1 mRNA correlate with the developmental changes in Na+/H+ activity in sarcolemmal vesicles purified from rabbit heart.
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Base de dados:
MEDLINE
Assunto principal:
RNA Mensageiro
/
Trocadores de Sódio-Hidrogênio
/
Miocárdio
Limite:
Animals
Idioma:
En
Ano de publicação:
1995
Tipo de documento:
Article