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| Content Provider | Springer Nature Link |
|---|---|
| Author | Jugdutt, Bodh I. Idikio, Halliday Uwiera, Richard R. E. |
| Copyright Year | 2007 |
| Abstract | To determine whether therapy with the angiotensin II type 1 receptor blocker (ARB) candesartan and the comparator angiotensin-converting-enzyme inhibitor (ACEI) enalapril during healing after reperfused ST-elevation myocardial infarction (RSTEMI) limit adverse remodeling of infarct zone (IZ) collagens and left ventricular (LV) diastolic dysfunction, we randomized 24 dogs surviving anterior RSTEMI (90-min coronary occlusion) to placebo, candesartan, and enalapril therapy between day 2 and 42. Six other dogs were sham. We measured regional IZ and non-infarct zone (NIZ) collagens (hydroxyproline; types I/III; cross-linking), transforming growth factor-β (TGF-β) and topography at 6 weeks, and hemodynamics, LV diastolic and systolic function, and remodeling over 6 weeks. Compared to sham, placebo-RSTEMI differentially altered regional collagens, with more pronounced increase in TGF-β, hydroxyproline, and type I, insoluble, and cross-linked collagens in the IZ than NIZ, and increased IZ soluble and type III collagens at 6 weeks, and induced persistent LV filling pressure elevation, diastolic and systolic dysfunction, and LV remodeling over 6 weeks. Compared to placebo-RSTEMI, candesartan and enalapril limited adverse regional collagen remodeling, with normalization of type III, soluble and insoluble collagens and decrease in pyridinoline cross-linking in the IZ at 6 weeks, and attenuation of LV filling pressure, diastolic dysfunction, and remodeling over 6 weeks. The results suggest that candesartan and enalapril during healing after RSTEMI prevent rather than worsen adverse remodeling of IZ collagens and LV diastolic dysfunction, supporting the clinical use of ARBs and ACEIs during subacute RSTEMI. |
| Starting Page | 27 |
| Ending Page | 38 |
| Page Count | 12 |
| File Format | |
| ISSN | 03008177 |
| Journal | Molecular and Cellular Biochemistry |
| Volume Number | 303 |
| Issue Number | 1-2 |
| e-ISSN | 15734919 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2007-04-11 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Angiotensin II inhibition Collagen ST-elevation myocardial infarction Reperfusion Remodeling Diastolic function Cardiology Oncology Medical Biochemistry Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine Clinical Biochemistry Molecular Biology |
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