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Objective:To investigate the relationship between manganese superoxide dismutase (MnSOD) gene Val16Ala polymorphism and the susceptibility to prostate cancer.Methods:All literatures related to MnSOD gene polymorphism and susceptibility to prostate cancer were retrieved from PubMed, Embase, China Knowledge Network and Wanfang databases. The retrieval time was from the database establishment to September 19, 2018. Literature screening and data extraction were independently done by 2 investigators, and Meta-analysis was performed by using Stata 12.0 software.Results:A total of 17 studies were included in the final analysis, including 7 101 prostate cancer cases and 9 146 healthy controls (people working at hospital and the ordinary people). The results of Meta-analysis showed that MnSOD gene Val16Ala polymorphism was not associated with susceptibility to prostate cancer under the homozygous model ( OR = 1.12, 95% CI 1.02-1.23, P = 0.435), heterozygous model ( OR = 1.14, 95% CI 1.05-1.24, P = 0.765), dominant model ( OR = 1.14, 95% CI 1.05-1.23, P = 0.552) and allele comparison model ( OR = 1.07, 95% CI 1.02-1.12, P = 0.106). Conclusion:There may not be the relationship between MnSOD gene Val16Ala polymorphism and the susceptibility to prostate cancer.
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ObjectiveTo evaluate the efficacy and safety of transcatheter arterial chemoembolization combined with argon-helium cryoablation on patients with advanced unresectable primary hepatocellular carcinoma. MethodsTranscatheter arterial chemoembolization was performed in 35 patients with primary hepatocellular carcinoma,then argon-helium cryoablation was done after 2-3 weeks.The second transcatheter arterial chemoembolization treatment was performed 1-2 week after argon-helium cryoablation.The after treatment response was evaluated and the toxicity was observed.RusultsThirty-five patients were evaluated.Complete response was observed in 7 patients,partial response in 21 patients,stable disease in 4 patients and progressive disease in 3 patients. Overall response rate was 80.00 ％(2g/35), and disease control rate was 91.43 ％(32/35). Patients' median PFS was 8.9 months, median OS was 16.3 months. ConclusionThe therapeutic effect of transcatheter arterial chemoembolization combined with argon-helium cryoablation is good in treating advanced unresectable primary hepatocellular carcinoma.
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<p><b>OBJECTIVE</b>To study the chemical constitutes of caulis Marsdeniae tenocissimae.</p><p><b>METHOD</b>70% ethanol extracts of caulis M. tenocissimae were isolated and purified by silica gel column chromatography, Sephadex LH-20 chromatography and semi-preparative reversed phase liquid chromatography (RPLC). The compounds were identified on the basis of spectral analysis, including NMR, MS and IR.</p><p><b>RESULT</b>Seven compounds were obtained and identified and their structures were identified as beta-sitosterol (1), condutirol(2), dihydroconduritol(3), betulinic acid(4), lupeol(5), daucosterol(6), 11alpha-O-(2-methylbutyryl)-12beta-O-acetyltenacigeninB(7).</p><p><b>CONCLUSION</b>Compound 4, 5 were isolated from the genus for the first time.</p>
Subject(s)
Apocynaceae , Chemistry , Plant Extracts , Plant Stems , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study the antitumor activities of the liposoluble components from caulis Marsdenia tenocissimae and analyze its chemical constituents.</p><p><b>METHOD</b>The supercritical fluid extraction was used to extract the liposoluble components from caulis M. tenocissimae. MIT test was applied to study the anticancer effects of liposoluble components on growth inhibition in human liver cancer line HepG-2 cells, and the chemical constituents were analyzed by gas chromatography/mass spectrometry (GC-MS).</p><p><b>RESULT</b>The liposoluble components of caulis M. tenocissimae have obvious growth inhibitory action to HepG-2 cells. Twenty-four compounds were identified and their relative contents were determined.</p><p><b>CONCLUSION</b>The liposoluble components from caulis M. tenocissimae have antitumor activities, and its pharmacological activity is related to its chemical constituents.</p>