Application of sodium ferulic acid in preparing medicament for expanding vascellum
A technology of sodium ferulate and vasodilator, applied in the application field of sodium ferulate in the preparation of vasodilators, can solve problems such as unclear sodium ferulate, and achieve the effect of expanding the scope of medicinal use
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Embodiment 1
[0018] Example 1 Preparation of Rat Isolated Aortic Ring
[0019] 1. Experimental drug
[0020] Sodium ferulate is provided by Hangzhou Zhongxiang Chemical Co., Ltd., and its properties are white powder, odorless, and its purity is 99.54%. Dissolve with Krebs-Henseleit (K-H) solution immediately before use.
[0021] 2. Experimental steps
[0022] Clean grade male Sprague-Dawley (SD) rats, weighing 250-300g.
[0023] Rapidly dissociate the thoracic aorta of SD rats and place at 4°C containing 95% O 2 and 5% CO 2 In the K-H liquid pre-saturated with mixed gas, the surrounding connective tissue was removed and cut into vascular rings of 3-4 mm. During this period, care should be taken to protect the intima of the vascular rings from damage. According to the needs of the experiment, the method of rubbing the inner surface of the vascular ring with a cotton swab was used to prepare a part of the vascular ring as a model in which the endothelium was removed. Then the vascular ...
Embodiment 2
[0024] Example 2 Effect of Sodium Ferulate on the Relaxation and Contraction Function of the Isolated Aortic Ring
[0025] According to the method of embodiment 1, observe after the vascular ring is stable:
[0026] (1) The effect of sodium ferulate on the tension of PE or KCl pre-contracted vascular ring
[0027] 60mmol·L -1 KCl or 1μmol·L -1 PE pre-contracted the aortic ring of rats, using the cumulative dosing method, adding sodium ferulate once every 10 minutes, and observing the cumulative administration of 0.1-30 mmol·L sodium ferulate -1 Effects on endothelial integrity and endothelial removal of vascular rings; in the control group, K-H solution was added instead of sodium ferulate.
[0028] (2) The effect of sodium ferulate on the tension of phorbol ester preconstricted vascular ring
[0029] In calcium-free solution, at 1 μmol L -1 Pre-shrink the endothelium with phorbol ester to remove the aortic ring, add sodium ferulate 0.1-30 mmol·L every 10 min -1 , to obs...
Embodiment 3
[0032] Example 3 Effect of Sodium Ferulate on Contraction of Vascular Smooth Muscle Caused by Influx of Extracellular Calcium Ions
[0033] According to the above experimental results, it was found that when the concentration of sodium ferulate accumulated to 1, 3 and 10mmol·L -1 When , the change of its vascular tension is more obvious, so these three concentrations are selected for the next experiment. And according to the method of embodiment 1, observe after the vascular ring is stable:
[0034] (1) The voltage sensitivity of sodium ferulate to high concentration KCl-induced activation of Ca 2+ channel effect
[0035] In calcium-free solution, with high concentration KCl (60mmol·L -1 ) to incubate the endothelium to remove the aortic ring, and then use 1, 3 or 10mmol·L -1 Sodium ferulate pretreated the vascular ring for 10min, observed the effect of different concentrations of sodium ferulate on the accumulation of CaCl 2 (0.01~10mmol·L -1 ) caused by vasoconstrictio...
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