Abstract：
:We studied the effect of thiazide-like diuretic--indapamide on fibrosis development in the left ventricle of young spontaneously hypertensive rats (SHR) and assessed the involvement of nitric oxide in this process. Six-week-old male SHR were treated with indapamide (1 mg/kg/day) for six weeks. Age-matched SHR were used as hypertensive and Wistar-Kyoto rats (WKY) as normotensive control. Systolic blood pressure was measured by tail-cuff plethysmography. Nitric oxide synthase (NOS) activity, protein expressions of endothelial (eNOS) and inducible NOS (iNOS), myocardial fibrosis and collagen type I and III were determined in the left ventricle. Indapamide treatment partially prevented SBP increase in SHR (SHR+Indapamide: 157+/-4, SHR: 171+/-3, WKY: 119+/-3 mmHg). Indapamide prevented myocardial fibrosis development in SHR, but without affecting collagen type I to type III ratio. Indapamide did not affect NOS activity as well as eNOS and iNOS protein expressions in the left ventricles evaluated by both Western blot and immunohistochemically. In conclusion, our results indicate that indapamide-induced prevention of myocardial fibrosis is not mediated by nitric oxide-related mechanism.
journal_name
Physiol Resjournal_title
Physiological researchauthors
Janega P,Kojsová S,Jendeková L,Babál P,Pechánová Osubject
Has Abstractpub_date
2007-01-01 00:00:00pages
825-8issue
6eissn
0862-8408issn
1802-9973pii
1405journal_volume
56pub_type
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