Correlation between serum cytokine IL-17 and demyelinating neuropathy multiple sclerosis:a Meta-analysis / 中国免疫学杂志

Objective:To evaluate the association with serum Interleukin-17 ( IL-17 ) and multiple sclerosis ( MS ) systematically evaluated .Methods:The retrieval words of "multiple sclerosis or MS"and "interleukin-17 or IL-17"were searched in PubMed,SpringerLink,Embases,OVID,China National Knowledge infrastructure (CNKI),Chinese VIP database,Chinese Biomedical Literature Database (CBM),Wan Fang Database through computer.Review Manager 5.3.was selected as the software edition.The time frame was ranged from January 1,2000 to March 10,2017.The language was not restricted .Results: Eventually 8 case-control studies were included with 544 cases.We found that the serum IL-17 level was associated with MS according to the weighted mean difference and 95%confidence interval ( WMD =38.65;95%CI:18.66 ,58.63 ) ,which had significant difference in statistics .Conclusion:The serum IL-17 level increases the risk of MS , suggesting that the serum IL-17 level can be used as a predictive biomarker for MS development and a target for MS effective prevention and treatment .

The relationship between apolipoprotein E gene ε2/ε3/ε4 polymorphism and breast cancer risk: a systematic review and meta-analysis.

OBJECTIVE: We conducted a systematic review and meta-analysis aiming to assess the relationship between apolipoprotein E (APOE) gene ε2/ε3/ε4 polymorphism and breast cancer risk. METHODS: Yun-Long Liu and Hao-Min Zhang independently completed literature retrieval and data collection, and statistical analyses were performed by Stata. Individual odds ratio (OR) and 95% confidence interval (CI) were pooled in a random-effects model using the DerSimonian-Laird method. Heterogeneity was evaluated by I (2) statistic at a significance level of 50%. Publication bias was assessed by Egger's test. RESULTS: Eleven articles including 2,074 breast cancer patients and 2,372 controls were summarized. Using the most common allele ε3 as a reference, the ε2 (OR =0.87, 95% CI =0.72-1.05, P=0.154, I (2)=0.0%) and ε4 (OR =1.07, 95% CI =0.80-1.42, P=0.654, I (2)=71.8%) alleles were not found to be significantly associated with breast cancer risk in the overall analyses. Subgroup analyses revealed that the comparison of allele ε4 with ε3 was significant in Asians (OR =1.58, 95% CI =1.17-6.32, P=0.003, I (2)=12.1%) and in studies that used the restriction fragment length polymorphism (RFLP) genotyping method (OR =1.27; 95% CI =1.01-1.61, P=0.045, I (2)=34.3%), and was marginally significant in hospital-based studies (OR =1.33; 95% CI =0.98-1.79, P=0.065, I (2)=30.2%), without heterogeneity. Moreover, the presence of the ε2 allele was significantly associated with breast cancer in small studies (total sample size <500) (OR =0.73, 95% CI =0.54-1.00, P=0.052, I (2)=0.0%) without heterogeneity. The Egger's test indicated low probabilities of publication bias. CONCLUSION: We observed a significant association between APOE gene ε4 allele and breast cancer risk in Asian populations. Moreover, the findings of our subgroup analyses suggest that source of controls, genotyping platform, and sample size might be the potential causes of heterogeneity.

[Small interfering RNA inhibits the expression of connexin43 in the human corpus cavernosum penis smooth muscle cells].

OBJECTIVE: To inhibit the expression of connexin43 (Cx43) in the human corpus cavernosum penis smooth muscle cells by small interfering RNA (siRNA) and detect the gap junction intercellular communication (GJIC), and to investigate the application of siRNA technology in the gap junction of corpus cavernosum penis smooth muscle cells and its role in the penile erection process. METHODS: With the help of the software of Ambion Corporation, the specific recombinant plasmids with siRNA targeting human Cx43 gene were constructed. The recombinant plasmids having been stably transferred into human corpus cavernosum penis smooth muscle cells for 48 hours, semi-quantitive reverse transcription polymerase chain reaction (RT-PCR) and Western blotting techniques were used to examine the inhibitory effects of siRNA on the expressions of the Cx43 gene and protein, in comparison with the siRNA negative control and the blank control group, respectively. The GJIC was detected by scrape-loading and fluorescence dye transfer experiments through the fluorescence microscope. RESULTS: The results of enzyme digestion analysis and DNA sequencing showed that the recombinant plasmid pSilencer 1.0-U6-siRNA-Cx43 was successfully constructed. The relative levels of Cx43 mRNA and protein expression in the smooth muscle cells were (0.45 +/- 0.08)% and (0.56 +/- 0.06)% after successful transfer of the recombinant plasmid. However, the expression levels of mRNA and protein were (0.72 +/- 0.04)% and (0.80 +/- 0.08)% in the negative siRNA transfer group, and (0.74 +/- 0.09)% and (0.77 +/- 0.11)% in the blank control, respectively, with a significant difference (P < 0.05). The GJIC also decreased significantly. CONCLUSION: siRNA can significantly inhibit the expression of Cx43 and block the GJIC in the human corpus cavernosum penis smooth muscle cells. siRNA technology plays an important role in penile erection and flaccidity.

[Effects of different immunodepressants on the sperm parameters of kidney transplant recipients].

OBJECTIVE: To study the effects of different immunodepressants on the sperm parameters of kidney transplant recipients. METHODS: In 15 healthy fertile men and 37 kidney transplant recipients, ejaculates were aseptically obtained by masturbation. Thirty-seven patients were divided into two groups, 20 patients were treated with Prograf (FK506) combination with mycophenolate mofetil (MMF) and prednisone; 17 patients were treated with cyclosporine (CsA) combination with azathioprine with prednisone. The sperm viability, mobility parameters such as prorsad percentage motility, straight line velocity (VSL), curve line velocity (VCL), velocity of average path (VAP) and morph were estimated with a computer-assisted sperm analyzer (CASA) provided with a multiple-exposure photography system. RESULTS: There were no significant difference in sperm viability rate [(81.7 +/- 5.7)%, (79.4 +/- 6.8)% and (83.8 +/- 6.0)%], VCL [(24.1 +/- 8.6)%, (23.9 +/- 4.4)%, (24.8 +/- 4.2)% ] and VAP [(19.7 +/- 6.6)%, (18.6 +/- 2.9)%, (21.0 +/- 4.0)%] among groups of FK506, CsA and control, respectively (P > 0.05). The rate of anomaly [(67.8 +/- 5.7)%], the prorsad percentage motility [(46.4 +/- 8.1)%] and VSL [(15.4 +/- 4.6)%] in the group of FK506 were respectively significantly lower and higher than those in the group of CsA [(80.1 +/- 5.6%, (33.3 +/- 6.4)%, (10.2 +/- 2.4)%] (P < 0.05). CONCLUSION: The application of FK506 combined with MMF could help recover the mobility and morphology of the sperm in kidney transplantation recipients.