- P-ISSN 1010-0695
- E-ISSN 2288-3339
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- P-ISSN1010-0695
- E-ISSN2288-3339
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Effects of Hwangnyeonhaedok-tang on Cerebral Hemorrhage and Edema in Collagenase Induced-ICH Rats
Journal of Korean Medicine / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2011, v.32 no.5, pp.100-113
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(2011). Effects of Hwangnyeonhaedok-tang on Cerebral Hemorrhage and Edema in Collagenase Induced-ICH Rats. Journal of Korean Medicine, 32(5), 100-113.
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Abstract
Objectives: Brain edema is brain swelling that occurs due to the accumulation of excess water in the brain parenchyma. AQP4 and AQP9 are water-channel proteins expressed strongly in the brain and control water fluxes into and out of the brain parenchyma. This study was conducted to evaluate effect of Hwangnyeonhaedok-tang on brain edema and intracerebral hemorrhage. Methods: Intracerebral hemorrhage was induced by intrastriatal injection of type IV collagenase(0.23 U/μl, 0.1 μl/min) into Sprague-Dawley rat brains. Hwangnyeonhaedok-tang water extract(1,000 mg/kg) was administered orally three times every 20 hours from 4 hours after ICH operation. Then hematoma volume, brain edema percentage, and water content of brain tissue were measured. Immuno-histochemistry was performed for AQP4 and AQP9 expressions in the brain sections and area % of immuno-labeling was analyzed with image analyzing system. Results:1. Water extract of Hwangnyeonhaedok-tang reduced hematoma volume of ICH induced rat. 2. Water extract of Hwangnyeonhaedok-tang reduced MPO positive neutrophils in the perihematoma of the ICH induced rat. 3. Water extract of Hwangnyeonhaedok-tang reduced brain edema percentage and water content of brain tissue of ICH induced rat. 4. Water extract of Hwangnyeonhaedok-tang reduced AQP4 immuno-positive cells in the perihematoma of the ICH induced rat. 5. Water extract of Hwangnyeonhaedok-tang reduced AQP9 immuno-positive cells in the perihematoma of the ICH induced rat. Conclusions: These results suggest that Hwangnyeonhaedok-tang decreases intracerebral hemorrhage and brain edema by means of downregulating AQP4 and AQP9 expressions in the brain.
- keywords
- Intracerebral hemorrhage, Hwangnyeonhaedok-tang, brain edema, MPO positive neutrophil, AQP4, AQP9
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