Abstract | AIM: METHODS: The rats were randomly divided into four groups: sham-operated group (group I as control), ischemic group (group II), the prophylactic (GbE premedication) group (group III) and GbE-treatment group (group IV). Magnetic resonance spectroscopy (MRS) was carried out to dynamically monitor the changes in biochemical metabolic variations 48 h after cerebral ischemia and effects of GbE (100 mg/kg, ip, qd). RESULTS: (1) Lactate (Lac) peak could be detectable at the infarction area 90 min after acute cerebral ischemia and increased with time. Lac peak in the prophylactic group was elevated slightly (P<0.01, n=6), whereas in the treatment group the elevation of Lac was more remarkable than that in the prophylactic group (P<0.05, n=6). (2) In the ischemic group, the level of N-acetyl aspartate (NAA) was decreased within 4 h after ischemia (P<0.05, n=6), and the decline persisted (P<0.01, n=6). In the treatment group and prophylactic group, NAA was decreased slightly after 24 h (P<0.05, n=6). (3)Twenty-four hours after ischemia, in both ischemic group and treatment group, choline (Cho) was elevated slightly (P<0.05, n=6) and creatine (Cr) was decreased slightly (P<0.05, n=6), but in the prophylactic group these changes occurred only after 48 h. CONCLUSION: GbE could prevent and treat acute cerebral ischemia. The effectiveness was more satisfactory when GbE was used preventively.
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Authors | Hai Peng, Yue-Fen Li, Sheng-Gang Sun |
Journal | Acta pharmacologica Sinica
(Acta Pharmacol Sin)
Vol. 24
Issue 5
Pg. 467-71
(May 2003)
ISSN: 1671-4083 [Print] United States |
PMID | 12740184
(Publication Type: Journal Article)
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Chemical References |
- Drugs, Chinese Herbal
- Lactates
- Aspartic Acid
- N-acetylaspartate
- Creatine
- Choline
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Topics |
- Animals
- Aspartic Acid
(analogs & derivatives, metabolism)
- Brain Ischemia
(drug therapy, metabolism, pathology, prevention & control)
- Choline
(metabolism)
- Creatine
(metabolism)
- Drugs, Chinese Herbal
(isolation & purification, therapeutic use)
- Ginkgo biloba
(chemistry)
- Hippocampus
(drug effects, metabolism, pathology)
- Lactates
(metabolism)
- Magnetic Resonance Spectroscopy
- Plants, Medicinal
(chemistry)
- Random Allocation
- Rats
- Rats, Sprague-Dawley
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