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Inhibition of L-NAME-induced hypertension by combined treatment with apocynin and catalase: the role of Nox 4 expression
T. Y. Chia, V. Murugaiyah, N. A. Khan, M. A. Sattar, M. H. Abdulla, E. J. Johns, A. Ahmad, Z. Hassan, G. Kaur, H. Y. Mei, F. U. Ahmad, S. Akhtar
Jazyk angličtina Země Česko
Typ dokumentu časopisecké články
Free Medical Journals od 1998
PubMed Central od 2020
ProQuest Central od 2005-01-01
Medline Complete (EBSCOhost) od 2006-01-01
Nursing & Allied Health Database (ProQuest) od 2005-01-01
Health & Medicine (ProQuest) od 2005-01-01
ROAD: Directory of Open Access Scholarly Resources od 1998
Odkazy
PubMed
33728924
DOI
10.33549/physiolres.934497
Knihovny.cz E-zdroje
- MeSH
- acetofenony farmakologie MeSH
- antioxidancia farmakologie MeSH
- hemodynamika MeSH
- hypertenze chemicky indukované farmakoterapie patofyziologie MeSH
- inhibitory enzymů toxicita MeSH
- katalasa farmakologie MeSH
- kombinovaná farmakoterapie MeSH
- krysa rodu rattus MeSH
- modely nemocí na zvířatech MeSH
- NADPH-oxidasa 4 metabolismus MeSH
- NG-nitroargininmethylester toxicita MeSH
- potkani inbrední WKY MeSH
- reaktivní formy kyslíku metabolismus MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- mužské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Reactive oxygen species (ROS) such as superoxide (O2-) generated by NAD(P)H oxidases have emerged as important molecules in blood pressure regulation. This study investigated the effect of apocynin and catalase on blood pressure and renal haemodynamic and excretory function in an L-NAME induced hypertension model. Forty Male Wistar-Kyoto (WKY) rats (n=8 per group) were treated with either: vehicle (WKY-C); L-NAME (WKY-L, 15 mg/kg/day in drinking fluid); WKY-L given apocynin to block NAD(P)H oxidase (WKY-LApo, 73 mg/kg/day in drinking water.); WKY-L given catalase to enhance ROS scavenging (WKY-LCat, 10000 U/kg/day i.p.); and WKY-L receiving apocynin plus catalase (WKY-LApoCat) daily for 14 days. L-NAME elevated systolic blood pressure (SBP), 116+/-1 to 181±4 mmHg, reduced creatinine clearance, 1.69+/-0.26 to 0.97+/-0.05 ml/min/kg and fractional sodium excretion, 0.84+/-0.09 to 0.55+/-0.09 % at day 14. Concomitantly, plasma malondialdehyde (MDA) increased six fold, while plasma total superoxide dismutase (T-SOD), plasma nitric oxide (NO) and plasma total antioxidant capacity (T-AOC) were decreased by 60-70 % and Nox 4 mRNA expression was increased 2-fold. Treatment with apocynin and catalase attenuated the increase in SBP and improved renal function, enhanced antioxidative stress capacity and reduced the magnitude of Nox4 mRNAs expression in the L-NAME treated rats. This study demonstrated that apocynin and catalase offset the development of L-NAME induced hypertension, renal dysfunction and reduced oxidative stress status, possibly contributed by a reduction in Nox4 expression during NOS inhibition. These findings would suggest that antioxidant compounds such as apocynin and catalase have potential in treating cardiovascular diseases.
Center of Drug Research Universiti Sains Malaysia Minden Penang Malaysia
Department of Endocrinology School of Medicine University of Virginia Charlottesville Virginia USA
Department of Pharmacy Abasyn University Islamabad Campus Islamabad Pakistan
Department of Pharmacy Islamia University of Bahawalpur Bahawalpur Pakistan
Department of Physiology School of Medicine University College of Cork Cork Ireland
Institute for Research in Molecular Medicine Universiti Sains Malaysia Minden Penang Malaysia
Literatura
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- $a Reactive oxygen species (ROS) such as superoxide (O2-) generated by NAD(P)H oxidases have emerged as important molecules in blood pressure regulation. This study investigated the effect of apocynin and catalase on blood pressure and renal haemodynamic and excretory function in an L-NAME induced hypertension model. Forty Male Wistar-Kyoto (WKY) rats (n=8 per group) were treated with either: vehicle (WKY-C); L-NAME (WKY-L, 15 mg/kg/day in drinking fluid); WKY-L given apocynin to block NAD(P)H oxidase (WKY-LApo, 73 mg/kg/day in drinking water.); WKY-L given catalase to enhance ROS scavenging (WKY-LCat, 10000 U/kg/day i.p.); and WKY-L receiving apocynin plus catalase (WKY-LApoCat) daily for 14 days. L-NAME elevated systolic blood pressure (SBP), 116+/-1 to 181±4 mmHg, reduced creatinine clearance, 1.69+/-0.26 to 0.97+/-0.05 ml/min/kg and fractional sodium excretion, 0.84+/-0.09 to 0.55+/-0.09 % at day 14. Concomitantly, plasma malondialdehyde (MDA) increased six fold, while plasma total superoxide dismutase (T-SOD), plasma nitric oxide (NO) and plasma total antioxidant capacity (T-AOC) were decreased by 60-70 % and Nox 4 mRNA expression was increased 2-fold. Treatment with apocynin and catalase attenuated the increase in SBP and improved renal function, enhanced antioxidative stress capacity and reduced the magnitude of Nox4 mRNAs expression in the L-NAME treated rats. This study demonstrated that apocynin and catalase offset the development of L-NAME induced hypertension, renal dysfunction and reduced oxidative stress status, possibly contributed by a reduction in Nox4 expression during NOS inhibition. These findings would suggest that antioxidant compounds such as apocynin and catalase have potential in treating cardiovascular diseases.
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