Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 5 de 5
Mais filtros

Base de dados
Intervalo de ano de publicação
Oxid Med Cell Longev ; 2022: 1733834, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35035656


Calycosin (CAL) is the main active component present in Astragalus and reportedly possesses diverse pharmacological properties. However, the cardioprotective effect and underlying mechanism of CAL against doxorubicin- (DOX-) induced cardiotoxicity need to be comprehensively examined. Herein, we aimed to investigate whether the cardioprotective effects of CAL are related to its antipyroptotic effect. A cardiatoxicity model was established by stimulating H9c2 cells and C57BL/6J mice using DOX. In vitro, CAL increased H9c2 cell viability and decreased DOX-induced pyroptosis via NLRP3, caspase-1, and gasdermin D signaling pathways in a dose-dependent manner. In vivo, CAL-DOX cotreatment effectively suppressed DOX-induced cytotoxicity as well as inflammatory and cardiomyocyte pyroptosis via the same molecular mechanism. Next, we used nigericin (Nig) and NLRP3 forced overexpression to determine whether CAL imparts antipyroptotic effects by inhibiting the NLRP3 inflammasome in vitro. Furthermore, CAL suppressed DOX-induced mitochondrial oxidative stress injury in H9c2 cells by decreasing the generation of reactive oxygen species and increasing mitochondrial membrane potential and adenosine triphosphate. Likewise, CAL attenuated the DOX-induced increase in malondialdehyde content and decreased superoxide dismutase and glutathione peroxidase activities in H9c2 cells. In vivo, CAL afforded a protective effect against DOX-induced cardiac injury by improving myocardial function, inhibiting brain natriuretic peptide, and improving the changes of the histological morphology of DOX-treated mice. Collectively, our findings confirmed that CAL alleviates DOX-induced cardiotoxicity and pyroptosis by inhibiting NLRP3 inflammasome activation in vivo and in vitro.

Cardiotoxicidade/tratamento farmacológico , Doxorrubicina/efeitos adversos , Medicamentos de Ervas Chinesas/uso terapêutico , Inflamassomos/efeitos dos fármacos , Isoflavonas/uso terapêutico , Proteína 3 que Contém Domínio de Pirina da Família NLR/efeitos dos fármacos , Animais , Modelos Animais de Doenças , Medicamentos de Ervas Chinesas/farmacologia , Humanos , Isoflavonas/farmacologia , Masculino , Camundongos , Piroptose
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 37(4): 453-457, 2017 04.
Artigo em Chinês | MEDLINE | ID: mdl-30650505


Objective To observe the effect of Fuxin Mixture(FXM) on the ß,-AR(adrenergic receptor) -cAMP(cyclic adenosine monophosphate, cAMP) -PKA ( protein kinase A, PKA) pathway of rats with heart failure. Methods Male Wistar rats were randomly divided into blank control group, captopril group, FXM low dose group, FXM high dose group and model group.Models of CHF were established. After drug intervention for 6 weeks, the left ventricular mass index (LVMI) was analysed, the expression of ß1 - AR mRNA in myocardial tissue was measured,the level of cAMP in rat plasma,the OD value PKA content of spleen tissue homogenate were detected. Results Compared with the blank control group, the LVMI and the cAMP in plasma of model group were increased (P <0. 05), the expression of ß1,-AR mRNA, the OD value of spleen tissue homogenate and PKA were decreased (P <0. 01). Compared with the model group, the LVMI were decreased,and the expression of ß1-AR mRNA were increased in FXM high dose group and captopril group (P <0. 01 , P <0. 05) ; the level of cAMP in plasma of each drug group were decreased (P <0. 01) , the OD value of spleen tissue homogenate and PKA were increased (P <0. 01). Compared with the captopril group, the expression of ß1-AR mRNA, the OD value of spleen tissue homogenate and PKA were decreased, and the LVMI and the cAMP were increased in the FXM low dose group (P <0. 01 , P <0. 05). Compared with the FXM low dose group, the LVMI and the cAMP of FXM high dose group were decreased (P <0. 05), the expression of ß1-AR mRNA, the OD value of spleen tissue homogenate and PKA were increased (P <0. 01). Conclusion FXM could play the role of anti-heart fail- ure through regulating P1-AR-cAMP-PKA pathway.

Proteínas Quinases Dependentes de AMP Cíclico , Medicamentos de Ervas Chinesas , Insuficiência Cardíaca , Animais , AMP Cíclico , Proteínas Quinases Dependentes de AMP Cíclico/efeitos dos fármacos , Proteínas Quinases Dependentes de AMP Cíclico/metabolismo , Medicamentos de Ervas Chinesas/uso terapêutico , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/metabolismo , Masculino , Miocárdio , Distribuição Aleatória , Ratos , Ratos Wistar
Complement Ther Med ; 23(3): 494-504, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26051585


OBJECTIVES: This study aims to evaluate published randomized controlled trials (RCTs) of Chinese Herbal Medicine (CHM) improving health-related quality of life (HRQL) in hypertensive patients that employ the Short-Form 36-Item Health questionnaire (SF-36) as an outcome measure. METHODS: Five electronic databases were searched up to October 2013 to identify RCTs of CHM for hypertension. The primary outcome was SF-36. Trial selection, data extraction, methodological quality assessment, and data analyses were conducted according to the Cochrane handbook. RESULTS: Eleven RCTs with total of 1043 participants were identified. The majority of the included trials were assessed to be of poor methodological quality and high clinical heterogeneity. Meta-analysis shows a significant improvement both in physical component summary (PCS) measure and mental component summary (MCS) measure of SF-36, with physical functioning (WMD=8.54[5.34, 11.74], p<0.001), role physical (WMD=13.32[7.03, 19.61], p<0.001), bodily pain (WMD=10.53[6.46, 14.60], p<0.001), general health (WMD=-5.56[2.09, 9.02], p<0.001), vitality (WMD=6.84[4.33, 9.53], p<0.001), social functioning (WMD=7.50[2.63, 12.36], p<0.001), role emotional (WMD=12.06[4.45, 19.68], p<0.001) and mental health (WMD=-5.68[2.90, 8.47], p<0.001). CHM can also decrease systolic blood pressure (WMD=-4.45 [-6.71, -2.19], p<0.001) and relieve symptoms related to hypertension. CONCLUSIONS: CHM appears to have beneficial effects on improvement of HRQL in hypertensive patients. However, the findings should be interpreted with caution due to the poor methodological quality and high clinical heterogeneity of the included trials. Further clinical trials should be carried out to provide more reliable evidence.

Medicamentos de Ervas Chinesas/uso terapêutico , Hipertensão , Qualidade de Vida/psicologia , Humanos , Hipertensão/tratamento farmacológico , Hipertensão/epidemiologia , Hipertensão/psicologia , Inquéritos e Questionários
Clin Res Cardiol ; 104(4): 310-9, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25391292


Chronic stress is a known risk factor for both endothelial dysfunction and cardiovascular disease (CVD), but less is known of how acute mental stress affects the vasculature. In this systematic review and meta-analysis, we analyzed the impact of acute mental stress on flow-mediated dilation (FMD), an indicator of endothelial function. We searched the Medline, Cochrane, EMBASE, and ISI Web of Knowledge databases through May 2014, to identify publications in English-language journals. The primary outcome was the change in FMD from baseline to the time of measurement. We also assessed the risk of bias and the heterogeneity of included studies. Our search identified eight prospective studies, which displayed significant heterogeneity. Four studies measured FMD while the subject was performing the task; six measured FMD after the task had been completed. The total number of participants was 164. The pooled results indicate that FMD did not change significantly while the task was being performed (pooled difference in means: -0.853; 95 % confidence interval (CI), -3.926/2.220; P = 0.586); however, FMD measured after the task was completed was significantly less than baseline (pooled difference in means: -2.450; 95 %CI, -3.925/-0.975; P = 0.001). In conclusions, our findings provide evidence that an acute stressful experience has a delayed, negative impact on the function of the endothelium. Repeated exposure to short-term stress may lead to permanent injury of the vasculature. Therefore, assessment of patients' exposure to both repeated acute mental stress and chronic stress may be useful in determining their risk of developing CVD.

Estresse Psicológico/epidemiologia , Estresse Psicológico/prevenção & controle , Disfunção Ventricular Esquerda/epidemiologia , Disfunção Ventricular Esquerda/prevenção & controle , Doença Aguda , Adulto , Idoso , Causalidade , Comorbidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Medição de Risco , Estresse Psicológico/psicologia , Resultado do Tratamento , Disfunção Ventricular Esquerda/psicologia , Adulto Jovem
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 33(6): 795-9, 2013 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-23980361


OBJECTIVE: To explore the effect of Chinese herbs for Shen invigorating and blood activating (CHSIBA) on the number of endothelial progenitor cells (EPCs) in the bone marrow and the peripheral blood and the signaling pathway of bone marrow matrix metalloproteinase 9 (MMP-9) of the myocardial infarction (MI) model rats. METHODS: The MI rat model was established by ligation. Thirty successfully modeled rats were randomly divided into the high dose CHSIBA group, the low dose CHSIBA group, and the model group, 10 in each group. Besides, another 10 normal rats were recruited as the blank group. Rats in the high dose CHSIBA group and the low dose CHSIBA group were administered with CHSIBA at 3 g/kg and 1.5 g/kg body weight by gastrogavage (by adding them in 4 mL physiological saline), once daily. Rats in the model group and the blank group were administered with 4 mL physiological saline once daily. The EPCs were collected from the bone marrow and the peripheral blood 4 weeks later. Seven days later the CD34/CD133 phenotype was identified in collected sticking wall cells using flow cytometry. The MMP-9 and water soluble Kit ligand (sKitL) were detected using Western blot. The expressions of vascular endothelial growth factor (VEGF) and stromal cell-derived factor-1alpha (SDF-1alpha) were detected using ELISA. RESULTS: The CD34/CD133 positive rate and the EPC quantity in the bone marrow and the peripheral blood were higher in the high dose CHSIBA group and the low dose CHSIBA group than in the model group (P < 0.05, P < 0.01). Besides, the expressions of VEGF, SDF-1alpha, MMP-9, and sKitL in the bone marrow and the peripheral blood were also higher in the high dose CHSIBA group and the low dose CHSIBA group than in the model group (P < 0.05, P < 0.01). CONCLUSION: CHSIBA could activate MMP-9 signaling pathway, increase its upstream and downstream signal expression levels, and mobilize EPCs in the bone marrow to enter the blood circulation.

Células da Medula Óssea/efeitos dos fármacos , Medicamentos de Ervas Chinesas/farmacologia , Metaloproteinase 9 da Matriz/metabolismo , Infarto do Miocárdio/metabolismo , Transdução de Sinais , Animais , Células da Medula Óssea/metabolismo , Células Endoteliais/efeitos dos fármacos , Células Endoteliais/metabolismo , Masculino , Ratos , Ratos Sprague-Dawley , Células-Tronco/efeitos dos fármacos , Células-Tronco/metabolismo