Relationship of Vitamin D deficiency with Lipid metabolism, micro-inflammatory response and endothelial injury in obese children

Objective:To study the relationship of vitamin D deficiency with lipid metabolism, micro-inflammatory response and endothelial injury in obese children.Methods: a total of 68 cases of obese children who received examination in our hospital were chosen as obese group, 56 cases of overweight children who received examination in our hospital were chosen as overweight group, and 50 cases of normal children who received vaccination in our hospital were chosen as normal control group. The differences in peripheral blood 1,25-(OH)D3 content as well as serum contents of lipid metabolism, micro-inflammatory reaction and endothelial injury indexes were compared among three groups. Pearson test was used to evaluate the internal relationship between 1, 25-(OH)D3 and the degree of environmental disturbance in obese children.Results:1,25-(OH) D3 contents in obese group and overweight group were lower than that in normal control group, and 1,25-(OH) D3 content in obese group was lower than that in overweight group. Serum contents of lipid metabolism indexes TC, TG and LDL-C in obese group and overweight group were higher than those in normal control group while HDL-C content was lower than that in normal control group;contents of micro-inflammation indexes CRP, IL-6 and TNF-α were higher than those in normal control group;serum content of endothelial injury index ET-1 was higher than that in normal control group while NO, CGRP and PGI2 contents were lower than those in normal control group;the changes in serum contents of above indexes in obese group were larger than those in overweight group. Conclusion: There is vitamin D deficiency in obese children, and the degree of deficiency is directly related to the degree of abnormal lipid metabolism, micro-inflammation and endothelial injury.

循环肿瘤细胞对非小细胞肺癌患者预后评估的Meta分析

目的系统评价循环肿瘤细胞(circulating tumor cells,CTCs)在非小细胞肺癌(non-small cell lung cancer,NSCLC)患者中的预后价值。方法计算机检索中国知网、万方、中国生物医学文献服务系统、维普、PubMed、Web of Science、The Cochrane Library、Embase数据库,收集检测NSCLC患者基线CTCs水平的相关研究,检索时间为建库至2021年9月28日。按照纳排标准筛选文献、提取资料和质量评价后,采用RevMan 5.3软件和Stata 15.0软件进行Meta分析。结果共纳入19项研究,包括1853例NSCLC患者。Meta分析结果显示,与低水平CTCs的NSCLC患者相比,CTCs高水平患者在无进展生存期方面预后更差[HR=2.49,95%CI(1.50,4.13),P=0.0004],但对总生存期无显著预测作用[HR=1.18,95%CI(0.70,1.99),P=0.54]。结论基线CTCs水平对NSCLC患者的无进展生存期有较显著的预测作用,但对总生存期无显著预测能力,未来仍需进一步研究。

Association between MTHFR c.677C>T variant and erectile dysfunction among males attending fertility clinic

Genetic risk factors have been shown to contribute to the development of sexual dysfunction.However,the role of methylenetetrahydrofolate reductase(MTHFR)gene variants in the risk of erectile dysfunction(ED)remains unclear.In this study,we recruited 1254 participants who underwent ED assessed by the International Index of Erectile Function-5.The MTHFR c.677C>T variant was also measured by fluorescence polymerase chain reaction(PCR).No significant difference in the genotypic frequency of the MTHFR C677T polymorphism(CC,CT,and TT)was observed between men from the ED and non-ED groups.In addition,on binary logistic regression analysis,both crude and adjusted models showed that the risk of ED was not significantly associated with the C677T polymorphism.Interestingly,a significantly higher frequency of the 677TT polymorphism was found in severe and moderate ED(P=O.02).The positive correlation between the MTHFR 677TT polymorphism and severe ED was confirmed by logistic regression analysis,even after adjusting for potential confounders(odds ratio[OR]=2.46,95%confidence interval[CI]:1.15-5.50,P=0.02).These findings suggest a positive correlation between the MTHFR 677TT polymorphism and the risk of severe ED.Identification of MTHFR gene polymorphisms may provide complementary information for ED patients during routineclinicaldiagnosis.

新型冠状病毒肺炎药物预防、诊断、治疗与出院管理临床实践指南:证据评价(一)

目的对本团队已发表新型冠状病毒肺炎药物预防、诊断、治疗与出院管理临床实践指南纳入证据中的系统评价部分进行再评价。方法指南中的证据检索数据库/资源为PubMed、The Cochrane Library、Embase、中国知网和万方数据库,补充检索部分感染或呼吸相关的重要医学期刊、预印本平台和临床试验注册中心收集新型冠状病毒肺炎治疗相关系统评价/Meta分析。检索时间为2019年12月1日至2020年7月8日。本研究采用AMSTAR 2工具评价所纳入系统评价的方法学质量。结果共纳入6篇系统评价/Meta分析,4篇涉及药物治疗,2篇为免疫治疗。AMSTAR 2评价结果显示1篇研究方法学质量为高,3篇为中等,1篇为低,1篇为极低,方法学不足主要表现在方案与注册、分析方法及资金来源等方面。结论现有新型冠状病毒肺炎治疗相关系统评价的方法学质量为极低到高等,部分结论尚不能确定,仍需大样本、长期随访的高质量研究来证实。