Tags

Type your tag names separated by a space and hit enter

Comparison between early and delayed systemic treatment with candesartan of rats after ischaemic stroke.
J Hypertens. 2007 Jan; 25(1):187-96.JH

Abstract

OBJECTIVE

The effects of candesartan treatment starting early (3 h) and delayed (24 h) after middle cerebral artery occlusion (MCAO) with reperfusion was investigated in normotensive rats.

METHODS

Subcutaneous treatment with candesartan (0.3 and 3 mg/kg) or vehicle was initiated 3 or 24 h after the onset of MCAO and continued for seven consecutive days (n=20 per group and timepoint). Neurological outcome was evaluated daily using two different scoring systems. Infarct and oedema volumes were determined in rats 2 or 7 days after MCAO. Mean arterial, systolic and diastolic blood pressures were recorded before and after the application of candesartan.

RESULTS

Mean arterial, systolic and diastolic blood pressures were markedly decreased with the high dose, but only moderately decreased with the low dose of candesartan. Vehicle-treated rats showed marked neurological deficits 24 h after MCAO, which gradually improved with time. Candesartan improved neurological outcomes at all timepoints only when treatment was started 3, but not 24 h after MCAO. The infarct volume was reduced on days 2 and 7 after MCAO in rats treated with the low but not the high dose of candesartan.

CONCLUSION

The present study demonstrates that only an early but not a delayed onset of treatment with candesartan exerts neuroprotection after focal ischaemia. The degree of neurological impairments did not correlate with the infarct volume, which was reduced only after the low dose of candesartan. The high dose of candesartan failed to reduce the infarct volume, probably because of an excessive blood pressure decrease.

Authors+Show Affiliations

Institute of Pharmacology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17143191

Citation

Brdon, Jan, et al. "Comparison Between Early and Delayed Systemic Treatment With Candesartan of Rats After Ischaemic Stroke." Journal of Hypertension, vol. 25, no. 1, 2007, pp. 187-96.
Brdon J, Kaiser S, Hagemann F, et al. Comparison between early and delayed systemic treatment with candesartan of rats after ischaemic stroke. J Hypertens. 2007;25(1):187-96.
Brdon, J., Kaiser, S., Hagemann, F., Zhao, Y., Culman, J., & Gohlke, P. (2007). Comparison between early and delayed systemic treatment with candesartan of rats after ischaemic stroke. Journal of Hypertension, 25(1), 187-96.
Brdon J, et al. Comparison Between Early and Delayed Systemic Treatment With Candesartan of Rats After Ischaemic Stroke. J Hypertens. 2007;25(1):187-96. PubMed PMID: 17143191.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison between early and delayed systemic treatment with candesartan of rats after ischaemic stroke. AU - Brdon,Jan, AU - Kaiser,Sabine, AU - Hagemann,Friederike, AU - Zhao,Yi, AU - Culman,Juraj, AU - Gohlke,Peter, PY - 2006/12/5/pubmed PY - 2007/3/3/medline PY - 2006/12/5/entrez SP - 187 EP - 96 JF - Journal of hypertension JO - J Hypertens VL - 25 IS - 1 N2 - OBJECTIVE: The effects of candesartan treatment starting early (3 h) and delayed (24 h) after middle cerebral artery occlusion (MCAO) with reperfusion was investigated in normotensive rats. METHODS: Subcutaneous treatment with candesartan (0.3 and 3 mg/kg) or vehicle was initiated 3 or 24 h after the onset of MCAO and continued for seven consecutive days (n=20 per group and timepoint). Neurological outcome was evaluated daily using two different scoring systems. Infarct and oedema volumes were determined in rats 2 or 7 days after MCAO. Mean arterial, systolic and diastolic blood pressures were recorded before and after the application of candesartan. RESULTS: Mean arterial, systolic and diastolic blood pressures were markedly decreased with the high dose, but only moderately decreased with the low dose of candesartan. Vehicle-treated rats showed marked neurological deficits 24 h after MCAO, which gradually improved with time. Candesartan improved neurological outcomes at all timepoints only when treatment was started 3, but not 24 h after MCAO. The infarct volume was reduced on days 2 and 7 after MCAO in rats treated with the low but not the high dose of candesartan. CONCLUSION: The present study demonstrates that only an early but not a delayed onset of treatment with candesartan exerts neuroprotection after focal ischaemia. The degree of neurological impairments did not correlate with the infarct volume, which was reduced only after the low dose of candesartan. The high dose of candesartan failed to reduce the infarct volume, probably because of an excessive blood pressure decrease. SN - 0263-6352 UR - https://www.unboundmedicine.com/medline/citation/17143191/Comparison_between_early_and_delayed_systemic_treatment_with_candesartan_of_rats_after_ischaemic_stroke_ L2 - https://doi.org/10.1097/01.hjh.0000254376.80864.d3 DB - PRIME DP - Unbound Medicine ER -