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OBJECTIVE To establish the fingerprints of c ultivated and wild Anemarrhena asphodeloides，and to identify their differential components. METHODS Using an evaporative light-scattering detector ， the high performance liquid chromatography combined with Similarity Evaluation System of TCM Chromatographic Fingerprint （2012 edition） were used to establish fingerprints of 14 batches of cultivated A. asphodeloides and 14 batches of wild medicinal materials ，and evaluate their similarity. The common peaks were identified by comparison with the chromatogram of the mixed control. At the same time ，the contents of components corresponding to common peaks in cultivated and wild A. asphodeloides were determined. The principal component analysis and orthogonal partial least squares discrimination analysis were adopted to identify differential components of them ，and compare the contents of them. RESULTS Among 28 batches of A. asphodeloides ，10 common peaks were found ，i.e. neomangiferin（peak 1），mangiferin（peak 2），isomangiferin（peak 3），timosaponin B Ⅱ（peak 7），timosaponin B Ⅲ（peak 8）， timosaponin Ⅰ（peak 9），timosaponin A Ⅲ（peak 10）. The similarities of fingerprints of samples with control fingerprint were no less than 0.963. The average total contents of seven components in cultivated and wild A. asphodeloides were 74.18 and 84.72 mg/g， respectively；there was statistical significance （P＜0.05）. The cultivated and wild A. asphodeloides could be divided into two categories. The differential components were neomangiferin ，mangiferin，timosaponin B Ⅱ and timosaponin A Ⅲ（VIP values were all higher than 1）. The content of neomangiferin in cultivated products was significantly higher than that in wild products （P＜ 0.05），and the contents of mangiferin ，timosaponin B Ⅱ and ti mosaponin A Ⅲ were significantly lower than those in wild products （P＜0.05）. CONCLUSIONS Fingerprint of A. asphodeloides is established ，and differential components of cultivated and wild A. asphodeloides are identified primarily.
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Objective To investigate the protective effect of the ethanol extract of Portulaca oleracea L. on acute liver injury induced by carbon tetrachloride in mice, and to analyze its effective components. Methods 80% ethanol purslane extract was centrifuged, vacuum distillated and vacuum dried into whole plant extract, supernatant extract and precipitated extract. Eighty ICR male mice were randomly divided into 8 groups: control group, liver injury model group, whole plant extract low-dose group, high-dose group, supernatant extract low-dose group, high-dose group, precipitation extract low-dose group, and high-dose group. After oral administration of distilled water or three kinds of purslane extract suspensions at different doses for 1 week, olive oil or CCl4 olive oil solution were injected subcutaneously respectively. After 16 hours, serum was collected to detect the levels of ALT, AST and IL-6 to evaluate the protective effect of purslane on acute liver injury. Ultra-high performance liquid chromatography quadrupole time of flight mass spectrometry (UPLC-Q-TOF/MS) was used to analyze the effective components of purslane extract. Results Compared with the model group, the levels of serum AST, ALT and IL-6 in high-dose whole plant extract group were significantly reduced. The serum ALT level of mice in the high-dose precipitation extract group was significantly reduced (P<0.05). The serum IL-6 level was decreased, but there was no significant difference. There were no significant changes in the levels of serum AST, ALT and IL-6 in the other intervention groups. 15 main components such as malic acid, citric acid, leucine, isoleucine, adenosine, succinic acid, genistein, tyrosine and phenylalanine were identified by UPLC-Q-TOF/MS. Conclusion Purslane whole plant ethanol extract has hepatoprotective and anti-inflammatory effects on CCl4 acute liver injury mice, which may be a combined effect of 15 active components.
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Objective:To explore the role of transgelin(TAGLN) in the occurrence and development of papillary thyroid carcinoma (PTC) and its possible signal pathway.Methods:One hundred cases of PTC tissues and corresponding paracancerous normal thyroid tissues were collected. Realtime quantitative PCR (RT-qPCR), Western blotting, and immunohistochemistry were used to analyze the expression of TAGLN in PTC tissues and corresponding paracancerous normal thyroid tissues. PTC cells were transfected with plasmid and shRNA lentivirus vector respectively to up-regulate or down-regulate the expression of TAGLN in order to detect the effects of them on the proliferation, invasion, and migration by cell proliferation assay(cell counting kit-8, CCK-8)and cell invasion and migration assays (Transwell). The effects of TAGLN on mitogen-activated protein kinase (MAPK)/extracellular-signal regulating kinase (ERK) signal pathway was detected with Western blotting.Results:RT-qPCR showed that there was no difference in the expression of TAGLN mRNA between PTC and corresponding paracancerous normal thyroid tissues ( P>0.05); Western blotting demonstrated that the expression of TAGLN protein in PTC tissues was significantly lower than that in corresponding paracancerous normal thyroid tissues ( P<0.01). Immunohistochemical results revealed that the expression of TAGLN in PTC tissues was significantly lower than that in corresponding paracancerous normal thyroid tissues. Overexpression of TAGLN inhibited the proliferation, invasion, and migration of PTC cells ( P<0.01), but knockdown of TAGLN promoted the proliferation, invasion, and migration of PTC cells ( P<0.01). Overexpression of TAGLN decreased the expression of phosphorylated ERK ( P<0.05), whereas silencing TAGLN increased phosphorylated ERK level in PTC cells( P<0.01). Conclusion:The expression of TAGLN in PTC is significantly decreased. It is related to the occurrence and development of PTC, and its mechanism may be related to MAPK/ERK signal pathway.
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AIM:To investigate the antagonism mechanism of benazepril on renal fibrosis of unilateral uretreal obstructire (UUO).METHODS:Fiftyfour Sprague-Dawley (SD) rats were randomly divided into three groups:sham operation group,model group,benazepril group.All the other groups were treated with surgery method of unilateral ureteral ligation to establish a rat model of renal fibrosis except the sham operation group.The pathological changes were observed by Masson staining;the positive staining expression of TGF-β1,Col-Ⅳ,Wnt1,Wnt4 in frozen sections were observed by immunofluorescence staining;the expressions TGF-β1,Col-Ⅳ,Wnt1 and Wnt4 mRNA in renal tissues were detected by real time fluorescence quantitative PCR.RESULTS:Masson staining results:compared with the sham group,the parts of blue dye collagen fiber and the degree of renal fibrosis increased significantly in all modeled groups;compared with the model group,the parts of blue dye collagen fiber and the degree of renal fibrosis decreased significantly in benazepril group.Immunofluorescence and PCR results:compared with the model group,the positive expression of Wnt1,Wnt4,TGF-β1,Col-Ⅳ and mRNA in the benazepril group decreased significantly.CONCLUSION:Benazepril can improve renal fibrosis by inhibiting the expression of TGF-β1,Col-Ⅴ,Wnt1,Wnt4 and ameliorating the level of renal fibrosis.