ABSTRACT
Objective:To explore the effect of Ershiwuwei Zhenzhu tablets (EZT) on microvascular function. Method:The zebrafish models of thrombosis, microvascular defect and vascular endothelial injury were induced by using arachidonic acid, simvastatin and ponatinib respectively, and treated with EZT, astragaloside or asprin. To evaluate the protective effect of EZT on vascular endothelium and its effect on thrombus formation, zebrafish heart output and blood flow velocity were counted, and the vascular area of the zebrafish intestine and the intervascular diameter were calculated. The thrombus in the tail vein was observed under microscope. Result:Compared with model group,EZT improved the cardiac output (PP-1, and promoted angiogenesis in zebrafish at concentrations of 0.11, 0.33, 1 mg·L-1. Compared with the model group, the vascular diameter of the zebrafish internode was significantly increased at the concentrations of 33 mg·L-1 (P-1 (P-1(PConclusion:EZT could improve microvascular dysfunction, and its mechanism may be related to the reduction of vascular endothelial damage to promote its angiogenesis and the improvement of microvascular hemodynamics to reduce thrombus formation.
ABSTRACT
Zebrafish of different strains with 5 dpf (5 days post-fertilization) were selected and fed with 0.2% high-fat diet for 8 h and 3% glucose solution for 16 halternatively during the day and night for 4 consecutive days. The zebrafish model was established and randomly divided into model group, Huangdi Anxiao Capsules (260 mg·L⁻¹) group and pioglitazone (32 mg·L⁻¹) group. The drug treatment groups were given the water-soluble drugs, with a volume of 25 mL, and incubated in a 28 °C incubator for 4 days. To detect the exposure to the corresponding drugs, the normal control group was set up. Thirty zebrafish were included in each group. The effect of Huangdi Anxiao Capsules on vascular wall thickness, fluorescence intensity of islet beta cells, fluorescence intensity of macrophages, and blood flow velocity of zebrafish were detected. The expressions of vascular endothelial growth factor (vegfaa) and angiotensin converting enzyme (ACE) were detected by RT-PCR. The results showed that compared with the model group, Huangdi Anxiao Capsules can significantly reduce the thickness of the blood vessel wall, increase the fluorescence intensity of islet β cells and macrophages, increase the blood flow velocity in vivo, and decrease the ACE and vegfaa expressions in zebrafish. It is suggested that Huangdi Anxiao Capsules may alleviate zebrafish vascular lesions by regulating the expressions of ACE and vegfaa.
Subject(s)
Animals , Capsules , Diet, High-Fat , Drugs, Chinese Herbal , Pharmacology , Glucose , Peptidyl-Dipeptidase A , Metabolism , Random Allocation , Vascular Diseases , Drug Therapy , Pathology , Vascular Endothelial Growth Factor A , Metabolism , Zebrafish , Zebrafish Proteins , MetabolismABSTRACT
OBJECTIVE To assess the efficancy of Yangxue Qingnao granules on simvastatin-induced vascular injury model in zebrafish. METHODS Since statins can inhibit vascular development in zebrafish,in this study,we developed a novel animal model using 1 to 3 day post-fertilization larval zebrafish by optimizing the doses and duration of simvastatin exposure.Five pro-angiogenic drugs with a variety of mechanisms were tested to validate the newly developed zebrafish model. Zebrafish was treated with different concentration of Yangxue Qingnao granules( 62.5,125 and 250 μg·mL-1)for 2 d then tested for the area of subintestinal vein vessels. RESULTS Vascular regeneration promoting effect of five pro-angiogenic drugs (calycosin, astragaloside, chlorogenic acid, ferulic acid and Panax Notoginseng Saponins)were 8-48%,24-51%,35-58%,28-75% and 37-69%,respectively.In 62.5,125 and 250 μg·mL-1Yangxue Qingnao granules group,vascular regeneration promoting effect were 21% (P>0.05), 84%(P<0.01) and 53%(P<0.01). CONCLUSION Our results demonstrate that the zebrafish vascular injury model validated in this study could be used for in vivo angiogenesis studies and drug screening and for assessing pro-angiogenic drugs with different mechanisms.Yangxue Qingnao granules could promote the vascular regeneration in zebrafish.