Reduction of cerebral infarct size by the AT1-receptor blocker candesartan, the HMG-CoA reductase inhibitor rosuvastatin and their combination. An experimental study in rats.
Article Details
- CitationCopy to clipboard
Engelhorn T, Doerfler A, Heusch G, Schulz R
Reduction of cerebral infarct size by the AT1-receptor blocker candesartan, the HMG-CoA reductase inhibitor rosuvastatin and their combination. An experimental study in rats.
Neurosci Lett. 2006 Oct 2;406(1-2):92-6. Epub 2006 Aug 9.
- PubMed ID
- 16901636 [ View in PubMed]
- Abstract
Our purpose was to test the impact of single and/or combined treatment with the AT(1)-receptor blocker candesartan and the HMG-CoA reductase inhibitor rosuvastatin on infarct size and neuroscore in transient cerebral ischemia in rats. L-NAME was used to test whether any potential effect was due to activation of endothelial nitric oxide synthase (eNOS). Therefore, the middle cerebral artery was occluded for 1 h (MCAO) followed by 7 days reperfusion. Rats received candesartan 2h before and daily after MCAO (pretreatment) or daily after MCAO (posttreatment); rosuvastatin was given daily for 7 days before MCAO without or with candesartan pre- and posttreatment. In addition, candesartan and rosuvastatin were combined with L-NAME. Infarct size and neuroscore at day 7 were compared to those of controls. As result, compared to controls (109+/-12 mm(3)) infarct size with candesartan (pretreatment: 21+/-5 mm(3); posttreatment: 68+/-29 mm(3); P<0.05) or rosuvastatin (69+/-14 mm(3); P<0.05) was smaller. Combined treatment also reduced infarct size (pretreatment: 37+/-15 mm(3); posttreatment 57+/-20mm(3); P<0.05); but there was no benefit of combined treatment over candesartan pretreatment alone. Compared to controls (2.08+/-0.28) only candesartan pretreatment and combined treatment improved the neuroscore (0.97+/-0.05, 1.10+/-0.33; P<0.05). L-NAME abolished the reduction in infarct size and improvement in neuroscore. In conclusion, both, candesartan or rosuvastatin treatment alone reduced infarct size in transient cerebral ischemia, and the best result was achieved with candesartan pretreatment. Combined treatment was superior to rosuvastatin alone, but not to candesartan. The therapeutic benefit of both agents was at least in parts mediated by eNOS-activation.
DrugBank Data that Cites this Article
- Drug Targets
Drug Target Kind Organism Pharmacological Action Actions Candesartan Type-1 angiotensin II receptor Protein Humans YesAntagonistDetails Candesartan cilexetil Type-1 angiotensin II receptor Protein Humans YesAntagonistDetails