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Jiang L.,Lanzhou University | Yang K.-H.,Lanzhou University | Tian J.-H.,Lanzhou University | Guan Q.-L.,Lanzhou University | And 6 more authors.
Nutrition and Cancer | Year: 2010

Several studies have evaluated the possible association between antioxidants vitamins or selenium supplement and the risk of prostate cancer, but the evidence is still inconsistent. We systematically searched PubMed, EMBASE, the Cochrane Library, Science Citation Index Expanded, Chinese biomedicine literature database, and bibliographies of retrieved articles up to January 2009. We included 9 randomized controlled trials with 165,056 participants; methodological quality of included trials was generally high. Meta-analysis showed that no significant effects of supplementation with β-carotene (RR 0.97, 95% CI 0.90-1.05) (3 trials), vitamin C (RR 0.98, 95% CI 0.91-1.06) (2 trials), vitamin E (RR 0.96, 95% CI 0.85-1.08) (5 trials), and selenium (RR 0.78, 95% CI 0.41-1.48) (2 trials)versus placebo on prostate cancer incidence. The mortality of prostate cancer did not differ significantly by supplement of β-carotene (RR 1.19, 95% CI 0.87 -1.65) (1 trial), vitamin C (RR 1.45, 95%CI 0.92-2.29) (1 trial), vitamin E (RR 0.85, 95%CI 0.58-1.24) (2 trials), and selenium (RR 2.98, 95% CI 0.12-73.16) (1 trial). Our findings indicate that antioxidant vitamins and selenium supplement did not reduce the incidence and mortality of prostate cancer, these data provide no support for the use of these supplements for the prevention of prostate cancer. Copyright © 2010, Taylor & Francis Group, LLC.

Wang Y.Z.,Lanzhou University | Zhang Y.C.,Lanzhou University | Cheng J.S.,Lanzhou University | Ni Q.,Lanzhou University | And 4 more authors.
Artificial Cells, Nanomedicine and Biotechnology | Year: 2014

The objective of this study is to investigate the effects of BML-111 on acute pancreatitis-associated lung injury (APALI) induced by cerulein with subsequent an LPS administration in mice and its possible mechanisms. One hundred and twenty-eight mice were randomly allocated to four groups, namely the APALI group, the BML-111 pretreatment group, the BM-111 control group, and the control group. The 'two-hit' mice APALI model was established by intraperitoneal injection of cerulein 7 times at hourly intervals and Escherichia coli lipopolysaccharide (LPS) once after the last dose of cerulein immediately. The samples were taken at 3, 6, 12, and 24 h after the last injection. Serum levels of amylase, TNF-a, IL-1β and IL-10, were determined. Histological score of the pancreas and lung, the wet/dry weight ratio, and heme oxygenase-1 (HO-1) expression in the lung were also evaluated. BML-111 pretreatment significantly reduced the serum levels of amylase, TNF-α, IL-1β, the wet/dry weight ratio of lung, and the pathology injury scores of pancreas and lung, and the serum levels of IL-10 were markedly increased. The severity of pancreatic and lung histology were also significantly improved by the administration of BML-111, and the expressions of HO-1 in lung tissues also increased in the BML-111 group compared with those in the APALI group. In conclusion, BML-111 exerts protective effects on APALI induced by cerulein and LPS. In addition to its anti-inflammatory effects, the beneficial effects may also be due to the upregulation of HO-1 expression in the lung tissues. © 2014 Informa Healthcare USA, Inc.

Sun X.,Lanzhou University | Xu Y.,Lanzhou University | Wang L.,Lanzhou University | Zhang F.,Second Hospital of Gansu Province | And 4 more authors.
PLoS ONE | Year: 2016

Background: Several host genetic factors are thought to affect susceptibility to Helicobacter pylori infectionrelated diseases, including tumor necrosis factor (TNF)-α. Previous studies have evaluated the association between TNFA gene polymorphisms and H. pylori infection, but the results were inconclusive. We conducted this meta-analysis to clarify the association between TNFA polymorphisms and H. pylori infection. Methods: Published literature within PubMed, Embase, and the Cochrane Library were used in our meta-analysis. Data were analyzed with the Stata13.1 software package using pooled odds ratios (ORs) with 95% confidence intervals (CI). Results: A total of 24 studies were included in our study. The TNFA -308G>A polymorphism was associated with decreasing H. pylori infection (AA vs. AG+GG, OR = 0.64, 95% CI = 0.43-0.97; AA vs. GG, OR = 0.64, 95% CI = 0.43-0.97). A significantly decreased risk was also found for -1031T>C polymorphism (CC vs. CT+TT, OR = 0.61, 95% CI = 0.44-0.84). -863C>A polymorphism was associated with increasing risk of H. pylori infection (AA+AC vs. CC, OR = 1.47, 95% CI = 1.16-1.86; A allele vs. C allele, OR = 1.40, 95% CI = 1.14-1.72). There was no significant association between -857C>T polymorphism and H. pylori infection. When stratified analysis was conducted on H. pylori infection detection methods, -857C>T and -863C>A polymorphisms were associated with H. pylori infection for the non-ELISA subgroup. When stratified for ethnicity or study design, -863C>A significantly increased the risk and -1031T>C decreased the risk for the Asian subgroup and hospitalbased subgroup. Conclusion: Results of our meta-analysis demonstrate that TNFA -308G

Sun X.,Lanzhou University | Xu Y.,Lanzhou University | Zhang F.,Second Hospital of Gansu Province | Jing T.,Lanzhou University | And 2 more authors.
Microbial Pathogenesis | Year: 2015

Background: Host genetic factors that control the production of cytokines, including interleukin-1β (IL-1β), possibly affect susceptibility to many Helicobacter pylori-related diseases. There is a complex interplay between H.pylori infection, the subsequent production of certain cytokines, and H.pylori-related diseases. We conducted a meta-analysis to clarify the association between the IL1B-31C>T polymorphism and H.pylori infection, and possible subsequent pathogenic mechanisms. Methods: Published literature contained within PubMed, Embase, and the Cochrane Library was used in our meta-analysis. Data were analyzed with the STATA 13.1 software package using pooled odds ratios (ORs) with 95% confidence intervals (95% CI). Egger's regression test, Begg's rank correlation test, and Begg's funnel plot were used to test publication bias. Results: A total of 12 case-control studies comprising 5827 subjects (3335 cases and 2492 controls) were available for our meta-analysis. The IL1B-31C>T polymorphism was associated with an increased risk of H.pylori infection in Asian and Latin American population (TT+CT vs. CC, OR=1.29, 95% CI=1.14-1.46; TT vs. CT+CC, OR=1.23, 95% CI=1.09-1.39; TT vs. CC, OR=1.43, 95% CI=1.22-1.67; T allele vs. C allele, OR=1.19, 95% CI=1.10-1.29). A significant association was also found for all genetic models in various subgroups (cancer and no-cancer, hospital- and population-based). Conclusion: Our meta-analysis demonstrated that IL1B-31C>T polymorphism might increase H.pylori infection risk in Asian and Latin American population. Further studies with different ethnicities and larger sample size are required to validate this result. © 2015 Elsevier Ltd.

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