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Expression of Cytochrome P450-4A Isoforms in the Rat Cremaster Muscle Microcirculation

Authors :
Lisa Henderson
Julian H. Lombard
Jiaxuan Zhu
Richard J. Roman
Kristopher G. Maier
Lourdes de la Cruz
Jingli Wang
Source :
Microcirculation. 11:89-96
Publication Year :
2004
Publisher :
Wiley, 2004.

Abstract

This study sought to identify any specific cytochrome P450 (CYP450) -4A enzyme isoforms expressed in arterioles and/or the surrounding parenchymal tissue of the rat cremaster muscle.RT-PCR was used to detect the presence of specific CYP450-4A isoforms in isolated muscle fibers and arterioles from the cremaster muscle of Sprague-Dawley rats; CYP450-4A protein expression was determined by Western blotting.CYP450-4A3 mRNA was expressed in isolated muscle fibers and in cremasteric arterioles, while CYP450-4A8 mRNA was expressed only in cremasteric arterioles. CYP450-4A1 and CYP450-4A2 mRNA were not expressed in arterioles and skeletal muscle cells, although all four isoforms were strongly expressed in the liver. CYP450-4A protein was detected in both the isolated muscle fibers and in the isolated arterioles.The present study identifies the specific pattern of cytochrome P450-4A isoform expression in arterioles and parenchymal cells of the skeletal muscle microcirculation, and supports the hypothesis that the cytochrome P-450 enzymes may play a role in the regulation of microvascular function in the skeletal muscle microcirculation.

Details

ISSN :
15498719 and 10739688
Volume :
11
Database :
OpenAIRE
Journal :
Microcirculation
Accession number :
edsair.doi.dedup.....d3cef21c23cb2e6fa6e970266ec21e46
Full Text :
https://doi.org/10.1080/10739680490266225