RAAS and stress markers in acute ischemic stroke: preliminary findings
Objectives Angiotensin II type 1 receptor blockade has neuroprotective effects in animal stroke models, but no effects in clinical stroke trials. We evaluated cerebral and peripheral changes in the renin angiotensin aldosterone system (RAAS) and stress responses in acute ischemic stroke patients. Ma...
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Veröffentlicht in: | Acta neurologica Scandinavica 2015-02, Vol.131 (2), p.132-139 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Objectives
Angiotensin II type 1 receptor blockade has neuroprotective effects in animal stroke models, but no effects in clinical stroke trials. We evaluated cerebral and peripheral changes in the renin angiotensin aldosterone system (RAAS) and stress responses in acute ischemic stroke patients.
Materials and methods
Blood from a jugular and cubital vein was collected within 48 h of stroke onset, after 24 and 48 h, and renin, angiotensin I, angiotensin II, aldosterone, norepinephrine, epinephrine, and cortisol were measured. Post‐stroke cubital vein samples were collected after 8 (4.7–10) months.
Results
The acute systolic blood pressure was significantly increased, 148 (141–168) vs 140 (130–147) mmHg post‐stroke. Angiotensin I, renin and aldosterone levels were significantly lower, angiotensin II was unchanged, and ACE activity was higher in the acute phase compared to post‐stroke. No differences in RAAS were detected between jugular and cubital plasma levels. Jugular venous plasma levels of epinephrine and cortisol were elevated in the acute phase compared to cubital levels (P |
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ISSN: | 0001-6314 1600-0404 |
DOI: | 10.1111/ane.12298 |