Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0917798 (cerebral ischemia)
 17,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To explore the effect of total flavonoids of Scutellaria barbata on cognitive function and nogo-A expression in the hippocampus region in cerebral ischemia model in gerbils. 30 gerbils were randomly divided into model group, sham operation group, large dose of total flavonoids of Scutellaria barbata group (large dose group), middle dose of total flavonoids of Scutellaria barbata group (middle dose group) and small dose of total flavonoids of Scutellaria barbata group (small dose group), with 6 cases in each group. All the groups except the sham operation group were received bilateral common carotid artery ligation to establish the cerebral ischemia model in gerbils. After that, the large, middle and small doses groups were given 400mg/kg, 200mg/kg and 100mg/kg of total flavonoids of Scutellaria barbata respectively, while the other two groups were injected with sodium chloride for 4 continuous weeks. At the 5th and 8th week after modeling, the cognitive function (e.g. escape latency period and original platform crossing times) of the gerbils in the three groups were detected by Morris water maze test. Moreover, the nogo-A expressions in the hippocampus region were detected by immunohistochemical staining method at the 8th week. The escape latency period and platform crossing times at the 5th and 8th week after modeling in the large dose group were significantly higher than the rest groups (except slam operation group) (p<0.05), while the difference was not significant when compared with slam operation group (p>0.05). The difference of the gray value of nogo-A positive cells in hippocampus in the large dose group was not significant compared with middle dose group and sham operation group (p>0.05), while it was significant compared with model group and small dose group (p<0.05). Large dose of total flavonoids of Scutellaria barbata can obviously improve the cognitive function in cerebral ischemia model in gerbils by reducing nogo-A expression in the hippocampus region.
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PMID:Effect of total flavonoids of Scutellaria barbata on cognitive function and nogo-A expression in the hippocampus in cerebral ischemia model in gerbils. 2816 80

Hydroxysafflor yellow A (HSYA) is the main bioactive flavonoid extracted from the flower of Carthamus tinctorius L., which is widely used in traditional Chinese medicine for the treatment of myocardial ischemia and cerebral ischemia. HSYA has high water solubility but poor intestinal membrane permeability, resulting in low oral bioavailability. Currently, only HSYA sodium chloride injection has been approved for clinical use and oral formulations are urgently needed. In this study, HSYA solid lipid nanoparticles (SLNs) with the structure of w/o/w were prepared by a warm microemulsion process using approved drug excipients for oral delivery to increase the oral absorption of HSYA. The optimized HSYA SLNs are spherical with an average size of 214nm and the encapsulation efficiency is 55%. HSYA SLNs exhibited little cytotoxicity in Caco-2 and Hela cells, but increased the oral absorption of HSYA about 3.97-fold in rats, compared to HSYA water solution. In addition, cycloheximide pretreatment significantly decreased the oral absorption of HSYA delivered by SLNs. Importantly, the pharmacodynamics evaluation demonstrated that SLNs further decreased the infarct areas in rats. In conclude, SLNs could be a promising delivery system to enhance the oral absorption and pharmacological activities of HSYA.
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PMID:Solid lipid nanoparticles as carriers for oral delivery of hydroxysafflor yellow A. 2910 14

In patients with chronic cerebral ischemia on the background of hypertension grade 2, stage 2, our investigation revealed a significant decrease (by 30.1%) in the level of phospholipids in the erythrocyte membrane and cholesterol esters (by 44.2%), increase in lizofosfa-tidilholina, free cholesterol, triacylglycerides, and free fatty acids (by 23.2 - 46.2%), and change in the ratio of lipid fractions responsible for the structure formation and stabilization of erythrocyte membranes. It was found that the most effective correction of lipid profile in erythrocyte membranes was produced by 10-day injection of a combination of actovegin (200 mg intravenous bolus) and cereton (1000 mg choline alfoscerate intravenous drip in 200.0 mL of 0.9% sodium chloride solution), while the minimum ef- fect was produced by a combination of cerebrolysin (2152 mg concentrated complex of peptides from pig brain, intravenous drip in 100.0 mL of 0.9% sodium chloride solution) and mexidol (250 mg of 2-ethyl-6-methyl-3-hydroxypyridine succinate intravenous bolus). The combination of emoxypine (40 mg of 3-hydroxy-6-methyl-2-ethylpyridine, intramuscularly) and piracetam (1000 mg of 2-oxo-I-pyrrolidine-acetamide intravenous bolus) gave intermediate results.
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PMID:[PHARMACOLOGICAL CORRECTION OF RED BLOOD CELL MEMBRANE LIPID SPECTRUM IN PATIENTS WITH CHRONIC CEREBRAL ISCHEMIA ON THE BACKGROUND OF HYPERTENSIVE DISEASE.] 2978 37


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