Objectives： To investigate the protective effects of Sapindus saponins in spontaneously hypertensive rats, and the possible cellular and molecular mechanisms. Methods： Thirty-two 16-week-old spontaneously hypertensi...Objectives： To investigate the protective effects of Sapindus saponins in spontaneously hypertensive rats, and the possible cellular and molecular mechanisms. Methods： Thirty-two 16-week-old spontaneously hypertensive rats were randomly divided into four groups （8 in each group）： model group （placebo）, positive control group （27 mg/kg of Captopril Tablets）, Sapindus saponins groups （27 mg/kg and 108 mg/kg, respectively）. Another 8 healthy Wistar-Kyoto strain （WKY） rats were used as the normal group. The animals were treated for 8 weeks. Blood pressure of rats was determined by non-invasive blood pressure meter （BP-6）. Furthermore, the contents of angiotensin Ⅱ （Ang Ⅱ） in plasma and myocardial tissue were determined by enzyme-linked immunosorbent assay （ELISA）, the gene expression of receptor angiotensin type 1 （AT1R） in aorta was determined by quantitative real- time polymerase chain reaction （qRT-PCR）. The protein expression of transforming growth factor- β1 （TGF- 1β1） and AT1R in heart was determined by immunohistochemical staining. The protein expression of p-phosphorylation of p38 mitogen-activated protein kinase （p-p38MAPK） was determined by Western blotting. The contents of interleukin （IL）-1, IL-6 and tumor necrosis factor （TNF） in serum were determined by radioimmunoassay. And the histopathological and morphological changes of aorta and heart tissue samples were assessed semi-quantitatively by hematoxylin-eosin （HE） or Masson staining. Results： Thirty minutes after single or continuous treatment, systolic blood pressure （SBP） was reduced significantly in Sapindus saponins groups. And the contents of Ang 11, IL-1, IL-6 and TNF-α in serum, the expression of AT1R mRNA, p-p38MAPK and TGF- β1 were significantly suppressed dose-dependently （P〈0.05 or 1=〈0.01）. With the Sapindus saponins treatment, compared with those of the model group, the cardiac and aortic pathological changes were ameliorated significantly. Conclusions�展开更多
The study has been carried out to investigate the effects of single factors such as solvents extraction temperature, times, solid-liquid ration, and the time of extractions on the yields of saponins present in the pul...The study has been carried out to investigate the effects of single factors such as solvents extraction temperature, times, solid-liquid ration, and the time of extractions on the yields of saponins present in the pulp of Sapindus mukorossi Gaerth. On this basis, an L9 orthogonal design of experiment was adopted to determine the optimal conditions for the extraction of saponins. The factors that influence the extraction of saponins are put in the order of extraction times, extraction time, solid-liquid ration, and the best combination is that the powder of the pulp is extracted with EtOH (solid-to-solvent ratio = 1:8, w/v) for three times at 60°C for 3 hours. Under these conditions, about 1.63 g saponins will be extracted from 10 g raw material. The stability test showed that the Sapindus mukuross saponins can maintain surface activity at water temperature (25°C - 40°C), pH (6.3 - 7.7) and water hardness (50 - 250 mg.L-1). It is proved that Sapindus mukuross saponins are quality non-ionic active agent.展开更多
基金Supported by the Foundation for Young Talents in College of Anhui Province under Grant(No.2009SQRZ114)Youth Scientific Research Foundation of Anhui University of Traditional Chinese Medicine(No.2012QN005)
文摘Objectives： To investigate the protective effects of Sapindus saponins in spontaneously hypertensive rats, and the possible cellular and molecular mechanisms. Methods： Thirty-two 16-week-old spontaneously hypertensive rats were randomly divided into four groups （8 in each group）： model group （placebo）, positive control group （27 mg/kg of Captopril Tablets）, Sapindus saponins groups （27 mg/kg and 108 mg/kg, respectively）. Another 8 healthy Wistar-Kyoto strain （WKY） rats were used as the normal group. The animals were treated for 8 weeks. Blood pressure of rats was determined by non-invasive blood pressure meter （BP-6）. Furthermore, the contents of angiotensin Ⅱ （Ang Ⅱ） in plasma and myocardial tissue were determined by enzyme-linked immunosorbent assay （ELISA）, the gene expression of receptor angiotensin type 1 （AT1R） in aorta was determined by quantitative real- time polymerase chain reaction （qRT-PCR）. The protein expression of transforming growth factor- β1 （TGF- 1β1） and AT1R in heart was determined by immunohistochemical staining. The protein expression of p-phosphorylation of p38 mitogen-activated protein kinase （p-p38MAPK） was determined by Western blotting. The contents of interleukin （IL）-1, IL-6 and tumor necrosis factor （TNF） in serum were determined by radioimmunoassay. And the histopathological and morphological changes of aorta and heart tissue samples were assessed semi-quantitatively by hematoxylin-eosin （HE） or Masson staining. Results： Thirty minutes after single or continuous treatment, systolic blood pressure （SBP） was reduced significantly in Sapindus saponins groups. And the contents of Ang 11, IL-1, IL-6 and TNF-α in serum, the expression of AT1R mRNA, p-p38MAPK and TGF- β1 were significantly suppressed dose-dependently （P〈0.05 or 1=〈0.01）. With the Sapindus saponins treatment, compared with those of the model group, the cardiac and aortic pathological changes were ameliorated significantly. Conclusions�
文摘The study has been carried out to investigate the effects of single factors such as solvents extraction temperature, times, solid-liquid ration, and the time of extractions on the yields of saponins present in the pulp of Sapindus mukorossi Gaerth. On this basis, an L9 orthogonal design of experiment was adopted to determine the optimal conditions for the extraction of saponins. The factors that influence the extraction of saponins are put in the order of extraction times, extraction time, solid-liquid ration, and the best combination is that the powder of the pulp is extracted with EtOH (solid-to-solvent ratio = 1:8, w/v) for three times at 60°C for 3 hours. Under these conditions, about 1.63 g saponins will be extracted from 10 g raw material. The stability test showed that the Sapindus mukuross saponins can maintain surface activity at water temperature (25°C - 40°C), pH (6.3 - 7.7) and water hardness (50 - 250 mg.L-1). It is proved that Sapindus mukuross saponins are quality non-ionic active agent.
