ABSTRACT
<p><b>OBJECTIVE</b>To study the protective effect of medicated serum prepared with Taohong Siwu Tang on hydrogen peroxide-injured human umbilical vein endothelial cells (HUVECs).</p><p><b>METHOD</b>Sprague Dawley rats were orally administered with 10 mL x kg(-1) extracts from Taohong Siwu Tang (1.75 g crude drug), twice a day for three days, in order to prepare medicated serum of Taohong Siwu Tang. The effect of medicated serum pre-treated with Taohong Siwu Tang (with concentrations of 5%, 10%, 15%) on reduction of H2O2-induced cell activity was detected MTT. Cell morphological changes were observed under microscope. The effect of medicated serum prepared with Taohong Siwu Tang on the apoptosis and antioxidant capacity of HUVECs was detected with the content of malondialdehyde (MDA) and dehydrogenase (LDH), the activity of superoxide dismutase (SOD) and AO/EB staining. The expression of Caspase-3 was determined by western blot.</p><p><b>RESULT</b>Compared with the blank serum control group, cell were significantly less active after being damaged by H2O2 (400 micromol x L(-1)). Medicated serum could significantly improve the SOD activity, reduce the levels of LDH and MDA, and inhibite the expression of Caspase-3. AO/EB staining and inverted microscope also showed that medicated serum prepared with Taohong Siwu Tang could reduce cell apoptosis induced by H2O2.</p><p><b>CONCLUSION</b>Medicated serum prepared with Taohong Siwu Tang has significant protective effect on HUVECs injured by H2O2.</p>
Subject(s)
Animals , Female , Humans , Rats , Apoptosis , Blotting, Western , Caspase 3 , Metabolism , Cell Survival , Cells, Cultured , Drugs, Chinese Herbal , Chemistry , Pharmacology , Human Umbilical Vein Endothelial Cells , Cell Biology , Metabolism , Hydrogen Peroxide , Pharmacology , L-Lactate Dehydrogenase , Metabolism , Malondialdehyde , Metabolism , Rats, Sprague-Dawley , Serum , Chemistry , Superoxide DismutaseABSTRACT
<p><b>OBJECTIVE</b>To observe the effect of Taohong Siwu decoction (THSWD) on micro-vascular density (MVD) in rat uterus, the content of angiopoietin-1 (Ang-1) and angiopoietin-2 (Ang-2) in serum, and the expression of tyrosine kinasa receptor (Tie-2) in uterus.</p><p><b>METHOD</b>Early pregnancy rats were intragastrically administrated with misoprostol (100 microg x kg(-1)) and mifepristong (8.3 mg x kg(-1)) to established the incomplete-abortion model. The incomplete-abortion rats were randomly divided into the model group (the same volume of distilled water), the positive control group (at the daily dose of 4.3 g x kg(-1) Motherwort Particles), and THSWD-treated groups (at the daily dose of 18.0, 9.0 and 4.5 g x kg(-1)). Pregnant rats were taken as the control group (the same volume of distilled water). After the successive oral administration for 7 days, blood was collected from aorta abdominalis, and rat uterine tissues were collected. The content of serum Ang-1 and Ang-2 were detected by ELISA; And the levels of Tie-2 and MVD in uterine tissues were detected by SP immunohistochemistry.</p><p><b>RESULT</b>THSWD remarkably increased the levels of MVD in uterus of medicine-induced abortion rats, the content of Ang-1 and Ang-2 in serum, and the expression of Tie-2 in uterine tissues.</p><p><b>CONCLUSION</b>THSWD has the effect in markedly promoting angiogenesis in incomplete-abortion rats. Its mechanism may be related to the regulation of concentrations of Ang-1 and Ang-2 in serum and Tie-2 in uterine tissues.</p>
Subject(s)
Animals , Female , Humans , Pregnancy , Rats , Abortion, Incomplete , Blood , Drug Therapy , Genetics , Angiopoietin-1 , Blood , Genetics , Angiopoietin-2 , Blood , Genetics , Drugs, Chinese Herbal , Therapeutic Uses , Gene Expression , Rats, Sprague-Dawley , Receptor, TIE-2 , Genetics , Metabolism , Uterus , MetabolismABSTRACT
Objective: To investigate the influence of sufentanil on calcium-activated K+ channels (IKCa) in rat abdominal aortic smooth muscle cells, and to investigate its role in dilation of blood vessels. Methods: Rat abdominal aortic smooth muscle cells (AASMCs) were freshly obtained by enzymatic digestion. Whole-cell voltage-clamp technique was used to assess the effect of sufentanil (1 × 10-8, 3 × 10-8, 1 × 10-7 mol/L) on IKCa. Results: Sufentanil significantly increased the amplitude of IKc compared with the control group (P < 0.05 or P < 0.01). The effect of sufentanil was reversible and in a concentration-dependent manner. Conclusion: Sufentanil can promote the activation of KCa channel in rat AASMCs, which might be related to the vasodilatory effect of sufentanil observed in clinical practice.