Quanzhou, China
Quanzhou, China

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Lin R.,No 180 Hospital Of Pla | Feng J.,Chongqing Medical University | Dong S.,No 180 Hospital Of Pla | Pan R.,No 180 Hospital Of Pla | And 2 more authors.
Cellular Physiology and Biochemistry | Year: 2015

Background/Aims: Autophagy is a cellular degradation process for the recycling of damaged or superfluous intracellular compartments to provide an alternative energy source during periods of metabolic stress for maintaining cell homeostasis and viability. Although autophagy in different contexts have been shown to use similar signaling pathways, the exact molecular regulation of autophagy has been found to be cell-type dependent. Methods: We used rapamycin to trigger autophagy and used nitric oxide (NO) to inhibit autophagy in prostate cancer cells. IWP-2 was used to inhibit β-catenin signaling. Autophagy-associated proteins were examined by Western blot. Results: We found that nitric oxide (NO), a potent cellular messenger, impaired rapamycin-induced autophagy in prostate cancer cells. Further analyses showed that NO induced nuclear accumulation of β-catenin, a key factor of Wnt signaling pathway, to inhibit autophagy in prostate cancer cells. Conclusions: We demonstrate involvement of β-catenin signaling in the regulation of autophagy of prostate cancer cells. Our results shed light on a previously unappreciated β-catenin signaling pathway for regulating autophagy in prostate cancer. © 2015 S. Karger AG, Basel.


PubMed | No161 Hospital Of Pla and No 180 Hospital Of Pla
Type: Journal Article | Journal: PloS one | Year: 2014

The results of the studies that have investigated the effects of black tea on blood cholesterol are inconsistent. The aim of this study is to quantitatively assess the effects of black tea on cholesterol concentrations.PubMed, Embase, MEDLINE, and Cochrane Library (through to July 2014) were searched for randomized controlled trials (RCTs) designed to investigate the effect of black tea on blood cholesterol concentrations. The study quality was assessed by the Jadad scoring criteria. Pooled effect of black tea consumption on blood cholesterol concentrations was evaluated by fixed-effects or random-effects model. Meta-regression analyses were conducted to estimate dose effects of black tea polyphenols on concentrations of blood cholesterol. Subgroup and sensitivity analyses were performed to assess the potential source of heterogeneity.The consumption of black tea did not significantly lower TC concentrations either in healthy subjects or patients with coronary artery diseases based on both fixed-effects and random-effects analysis. No significant change was observed in HDL-C concentrations in healthy participants or in subjects with coronary artery disease supplemented with black tea when compared with control participants. The pooled net change of LDL-C in healthy participants was -5.57 mg/dL (95% CI, -9.49 to -1.66 mg/dL; P=0.005) in fixed-effects analysis and -4.56 (95% CI, -10.30 to 1.17 mg/dL; P=0.12) in random-effects analysis. No significant net change was observed in LDL-C concentrations in patients with coronary artery disease. Subgroup and sensitivity did not significantly influence the overall outcomes of this meta-analysis. No significant dose effects of black tea polyphenols on blood cholesterol concentrations were detected in meta-regression analyses.The meta-analysis suggests that the consumption of black tea might not have beneficial effects on concentrations of TC, HDL-C, and LDL-C. Further high quality RCTs are needed to definitively draw a causal interpretation of the findings.


PubMed | Chongqing Medical University and No 180 Hospital Of Pla
Type: | Journal: Scientific reports | Year: 2016

The interactions between Bacteriophage (phage) and host bacteria are widespread in nature and influences of phage replication on the host cells are complex and extensive. Here, we investigate genome-wide interactions of Pseudomonas aeruginosa (P. aeruginosa) and its temperate phage PaP3 at five time points during phage infection. Compared to the uninfected host, 38% (2160/5633) genes of phage-infected host were identified as differentially expressed genes (DEGs). Functional analysis of the repressed DEGs revealed infection-stage-dependent pathway communications. Based on gene co-expression analysis, most PaP3 middle genes were predicted to have negative impact on host transcriptional regulators. Sub-network enrichment analysis revealed that adjacent genes of PaP3 interacted with the same host genes and might possess similar functions. Finally, our results suggested that during the whole infection stage, the early genes of PaP3 had stronger regulatory role in host gene expression than middle and late genes, while the host genes involved amino acid metabolism were the most vulnerable targets of these phage genes. This work provides the basis for understanding survival mechanisms of parasites and host, and seeking phage gene products that could potentially be used in anti-bacterial infection.


Wang D.,No 161 Hospital Of Pla | Chen C.,No 180 Hospital Of Pla | Wang Y.,No 180 Hospital Of Pla | Liu J.,No 180 Hospital Of Pla | Lin R.,No 180 Hospital Of Pla
PLoS ONE | Year: 2014

Background: The results of the studies that have investigated the effects of black tea on blood cholesterol are inconsistent. The aim of this study is to quantitatively assess the effects of black tea on cholesterol concentrations. Copyright:Methods: PubMed, Embase, MEDLINE, and Cochrane Library (through to July 2014) were searched for randomized controlled trials (RCTs) designed to investigate the effect of black tea on blood cholesterol concentrations. The study quality was assessed by the Jadad scoring criteria. Pooled effect of black tea consumption on blood cholesterol concentrations was evaluated by fixed-effects or random-effects model. Meta-regression analyses were conducted to estimate dose effects of black tea polyphenols on concentrations of blood cholesterol. Subgroup and sensitivity analyses were performed to assess the potential source of heterogeneity.Results: The consumption of black tea did not significantly lower TC concentrations either in healthy subjects or patients with coronary artery diseases based on both fixed-effects and random-effects analysis. No significant change was observed in HDL-C concentrations in healthy participants or in subjects with coronary artery disease supplemented with black tea when compared with control participants. The pooled net change of LDL-C in healthy participants was 25.57 mg/dL (95% CI, 29.49 to 21.66 mg/dL; P = 0.005) in fixed-effects analysis and 24.56 (95% CI, 210.30 to 1.17 mg/dL; P = 0.12) in random-effects analysis. No significant net change was observed in LDL-C concentrations in patients with coronary artery disease. Subgroup and sensitivity did not significantly influence the overall outcomes of this meta-analysis. No significant dose effects of black tea polyphenols on blood cholesterol concentrations were detected in meta-regression analyses.Conclusion: The meta-analysis suggests that the consumption of black tea might not have beneficial effects on concentrations of TC, HDL-C, and LDL-C. Further high quality RCTs are needed to definitively draw a causal interpretation of the findings. © 2014 Wang et al.


Zhang S.-B.,No 180 Hospital Of Pla | He Q.,No 180 Hospital Of Pla | Ge L.,No 180 Hospital Of Pla | Shi J.-S.,No 180 Hospital Of Pla | And 2 more authors.
Academic Journal of Second Military Medical University | Year: 2010

Objective: To study the influence of recombinant human erythropoietin (rhEPO) preconditioning on the liver function and expression of nuclear factor-κB (NF-κB) during early stage following liver transplantation, and to investigate the possible mechanism of rhEPO preconditioning on ischemia-reperfusion injury after liver transplantation. Methods: Twenty-six patients with advanced hepatic cirrhosis were randomly divided into two groups(n= 13) : the rhEPo pre-treatment group received subcutaneous injection of rhEPO 100 U/kg at 1, 3 and 5 d before liver transplantation, and the control group received 2 ml normal saline in the same manner. The peripheral blood samples were harvested at 1, 2, 4 and 6 h after blood supply recovery in the donator liver to examine the hepatic functions. The NF-κB p65 expression in the peripheral blood samples were examined by Western blotting analysis, the TNF-α level in the blood was detected by ABC enzyme linked immunosorbent assay. Serum ALT and AST were also determined. Results: The liver function indices and the levels of serum NF-κB p65, TNF-α in the rhEPO pretreatment group were significantly lower than those in the control group (P<0.05). Conclusion: Pre-treatment with rhEPO can inhibit hepatic inflammation early after liver transplantation, protecting hepatic function and reducing ischemia-reperfusion injury after liver transplantation.

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