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1.
International Journal of Cerebrovascular Diseases ; (12): 102-105, 2005.
Article in Chinese | WPRIM | ID: wpr-402108

ABSTRACT

To observe whether plasma levels of lysophosphatidic acid (LPA) can be decreased in patients with cerebrovascular diseases after the treatment with aspirin. Methods:A total of 1,400 patients were recruited. Among them,803 patients were diagnosed as probable ischemic stroke,and 343 patients were diagnosed as ischemic stroke. Thirty-four health volunteers were used as control subjects. The levels of LPA were measured by chromatography with the combination of inorganic phosphorus quantitative method. Results: The levels of LPA in the ischemic cerebrovascular group (3.11 ± 1.55 μmol/L) were significantly higher than those in the control group (1.77 ± 1.04 μmol/L) (P < 0.001). Taking aspirin (80 mg,qd) for one month significantly decreased the levels of LPA. After stopping aspirin for one month,the level of LPA re-elevated (3.90 ± 1.09 μmol/L),was higher than that during administration of aspirin (1.93 ±0.85 μmol/L(P <0.001). Conclusions: There are close correlations between the increased levels of LPA and the platelet activation. Aspirin decreases the level of plasma LPA;this may be one of the mechanisms of aspirin in prevention against ischemic stroke.

2.
Journal of Clinical Neurology ; (6)1995.
Article in Chinese | WPRIM | ID: wpr-582666

ABSTRACT

Objective To explore the preventive and protective effect of CGRP on focal cerebral infarction in rats.Methods Focal cerebral infarction model was made by photochemical reaction. The level of cerebral edema was assayed by measuring brain water content.Nervous system evaluation was scored by the method of Ohno, Bederson, LeWay standard. The volume of cerebral infarction and its location were determined by TTC staining.Results CGRP has significant preventive and protective effect to focal cerebral infarction which showed the nervous system scores took a favourable turn, brain edema descended and infarction volume reduced. This effect was related with the dose and the way of administration of CGRP. A single dose (1.33 BU/gBW) of CGRP didn't have significantly effective.It should be given for at least over 2 days. This protective effect did not increase when the dose increased to a certain level. As for the effect of the way of administration of CGRP, multiadministration of fewer doses CGRP was better while the total dose kept constantly.Conclusion CGRP has definite preventive and protective effect to focal cerebral infarction in rats.It has also better effective in inhibition of brain edema. However its dose should be confined in a proper level.

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