The vaginal microbiota and its association with human papillomavirus,Chlamydia trachomatis,Neisseria gonorrhoeae and Mycoplasma genitalium infections: a systematic review and meta-analysis

Background

The vaginal microbiota may modulate susceptibility to human papillomavirus (HPV), Chlamydia trachomatis, Neisseria gonorrhoeae and Mycoplasma genitalium infections. Persistent infection with a carcinogenic HPV is a prerequisite for cervical cancer, and C. trachomatis, N. gonorrheae and M. genitalium genital infections are all associated with pelvic inflammatory disease and subsequent infertility issues.

Ankylosing spondylitis susceptibility loci defined by genome-search meta-analysis

In genome scans of ankylosing spondylitis (AS), with the exception of the HLA loci, linkage has not been easy to replicate across studies. We applied the genome-search meta-analysis (GSMA) method to genome scans of AS and spondyloarthropathy (SpA) to assess evidence for linkage across studies. Three AS genome scans and one SpA scan including 430 families with 1,048 affected individuals were used. All four original genome scans mainly analyzed Caucasian families. Seven bins had both Psumrnk and Pord<0.05, suggesting these bins most likely contain AS-linked loci; bin 6.2, 6.1, 6.3, 16.3, 19.2, 17.1, and 16.4. The GSMA produced significant genome-wide evidence for linkage on chromosome 6p22.3–6p21.1 (Psumrnk=0.000003), including the HLA locus. In addition to the HLA-B27 locus, strong linkage evidence was found on chromosome 6p25.3–6p22.3 (Psumrnk=0.0013) and 6p21.1–6p15 (Psumrnk=0.043). In the GSMA of four genome scans including one SpA study, the bin 9.4 (9q21.32–9q33.1) was newly found for linkage (Psumrnk=0.043, Pord=0.013). This GSMA added the evidence of the HLA loci as the greatest susceptibility factor to AS and showed evidences of chromosome 6, 16q, 19, 17p, and 9q as non-HLA susceptibility loci.     

Attachment security: a meta-analysis of maternal mental health correlates

This meta-analysis addresses the association between attachment security and each of three maternal mental health correlates. The meta-analysis is based on 35 studies, 39 samples, and 2,064 mother-child pairs. Social-marital support (r = .14; based on 16 studies involving 17 samples and 902 dyads), stress (r = .19; 13 studies, 14 samples, and 768 dyads), and depression (r = .18; 15 studies, 19 samples, and 953 dyads) each proved significantly related to attachment security. All constructs showed substantial variance in effect size. Ecological factors and approach to measuring support may explain the heterogeneity of effect sizes within the social-marital support literature. Effect sizes for stress varied according to the time between assessment of stress and assessment of attachment security. Among studies of depression, clinical samples yielded significantly larger effect sizes than community samples. We discuss these results in terms of measurement issues (specifically, overreliance on self-report inventories) and in terms of the need to study the correlates of change in attachment security, rather than just the correlates of attachment security per se.     

中国人群肝癌发病危险因素病例对照研究的meta分析

目的 对中国人群肝癌发病危险因素的病例对照研究进行综合定量分析,为肝癌的防控和卫生决策提供理论依据。方法 系统地检索Pubmed、中国知网、万方数据库、中国医院知识仓库发表的中国人群肝癌影响因素的病例对照研究,检索自数据库建立到2021年5月1日的所有中英文文献。用纽卡斯尔-渥太华量表评价文献质量,用R 4.0.2软件进行meta分析。结果 共检索文献1799篇,根据纳入与排除标准筛选,最终有53篇病例-对照研究纳入系统评价。meta分析结果显示,肝癌的危险因素按照其关联性由强到弱依次为:HBV感染、肝病史、精神因素、HCV感染、癌症家族史、糖尿病、食用霉变食物、饮酒、吸烟、饮用不洁水源,合并 OR值最高为9.79（95%CI:7.93~11.65）,最低为1.32（95%CI:1.08~1.56）。饮茶为保护因素,合并OR值为0.28（95%CI:0.17~0.39）。敏感性分析、发表偏倚检验与剪补法分析结果显示,本研究纳入的文献整体上敏感性低,发表偏倚控制较好。结论 病毒感染、肝病史、饮酒等不健康生活方式为我国人群肝癌发病的危险因素,饮茶为保护因素。建议积极接种乙肝疫苗,改变不良饮食习惯和生活方式,加强肝癌的早预防、早发现、早诊断、早治疗。     

中国社区老年人营养风险检出率的Meta分析

目的 系统评价中国社区老年人营养风险检出率。方法 计算机检索CNKI、CBM、WanFang Data、VIP、PubMed、EMbase、The Cochrane Library、Web of Science、CINAHL数据库有关于中国社区老年人营养状况的研究,检索时限均为2000年1月1日至2021年9月。由2名研究者独立筛选文献、提取资料并对纳入研究进行偏倚风险评价后,采用Stata 14.0软件进行Meta分析。结果 共纳入47个研究,包含47508例老年人,共16923例老年人检出营养风险。Meta分析结果显示,中国社区老年人的营养风险检出率为36.6%［95%CI(30.4%~42.8%)］。亚组分析结果显示,女性44.6%［95%CI(32.4%~56.9%)］、高龄46.8%［95%CI(31.0%~62.5%)］、低文化程度54.8%［95%CI(40.8%~68.8%)］、独居49.7%［95%CI(38.7%~60.6%)］、伴慢性疾病39.0%［95%CI(31.1%~46.8%)］、居住地农村51.8%［95%CI(30.3%~73.4%)］、华中地区56.7%［95%CI(27.5%~85.9%)］、ADL受损70.6%［95%CI(57.0%~84.1%)］、认知功能障碍62.6%［95%CI(38.8%~86.5%)］和衰弱52.6%［95%CI(31.7%~73.6%)］的社区老年人营养风险检出率更高。结论 当前证据显示,我国社区居家老年人营养风险检出率较高,针对检出率较高的特征人群应尽早进行筛查、诊断和干预,减少社区老年人营养风险的发生。     

幽门螺杆菌感染与缺血性脑卒中发病风险相关性的Meta分析

目的 系统评价幽门螺杆菌（Hp）感染与缺血性脑卒中（IS）发病风险的相关性。方法 计算机检索PubMed、EMBASE、The Cochrane Library、CBM、CNKI、WanFang、VIP等数据库。搜集Hp感染与IS发病风险相关性的观察性研究,检索时限从建库至2020年12月。由2名研究者独立筛选文献、提取信息并评价纳入研究的质量及偏倚风险,采用Stata软件进行meta分析。结果 共纳入26项比较,发表在24篇文献中,涉及111 059例患者,包括19项病例对照研究,7项队列研究。文献质量均评价为中高水平。meta分析结果显示:Hp感染可增加IS的发病风险 [OR（95%CI） = 1.52（1.31～1.77）,P＜0.01]。以研究类型[病例对照研究（OR = 1.69）]、Hp感染检测指标[Hp - IgG（OR = 1.42）、CagA - IgG（OR = 2.09）、C - 14（OR = 3.30）]、卒中病因分型[大动脉粥样硬化型（OR = 2.69）]为分类依据进行亚组分析,发现Hp感染可以增加IS的发病风险。结论 Hp感染与IS发病风险具有一定的相关性,但该结论尚需更多高质量病因学研究进一步证实。     

隔代抚养与老年人心理健康相关性的Meta分析

目的 对隔代抚养与老年人心理健康关系进行meta分析。 方法 检索PubMed、Embase、the Cochrane Library、Web of Science、中国知网、万方、维普等中英文数据库,收集关于隔代抚养对老年人心理健康影响的相关文献,检索时限为自建库起至2021年5月。对纳入文献进行质量评价及数据整理。所有数据均采用RevMan 5.4软件进行meta分析。结果 最终纳入20篇文献,总样本量69 974例。Meta分析结果显示:在认知功能（SMD = 0.32, 95%CI:0.28～0.36, P＜0.001）、生活满意度（SMD = 0.06, 95%CI:0.04～0.09, P＜0.001）及自评健康（SMD = 0.08, 95%CI:0.02～0.14, P = 0.010）评估中,隔代抚养组评估结果优于非隔代抚养组,呈正相关且有统计学差异;在抑郁状况（SMD = - 0.04, 95%CI: - 0.09～0.01, P = 0.150）评估中,隔代抚养组评估结果劣于非隔代抚养组,呈负相关且有统计学差异。亚组分析结果显示:与非隔代抚养组相比,国外隔代抚养组（SMD = 0.27, 95%CI:0.15～0.39, P＜0.001）;国内隔代抚养组（SMD = - 0.07, 95%CI: - 0.09～ - 0.05, P＜0.001）老年人抑郁状况差异具有统计学意义。祖父抚养组与祖母抚养组（SMD = - 0.32, 95%CI: - 0.40～ - 0.24, P＜0.001）;城镇抚养组与农村抚养组（SMD = - 0.23, 95%CI: - 0.30～ - 0.17, P＜0.001）抑郁状况差异具有统计学意义。结论 隔代抚养对老年人的认知功能、生活满意度及自评健康有维持和促进作用。国家、性别及地域是隔代抚养老年人抑郁状况的重要影响因素。     

Association between bariatric surgery and anemia

ObjectivesSeveral studies have recently conducted to investigate the link between anemia and bariatric surgery (BS). The results from these studies, however, were inconsistent. Therefore, a meta-analysis was conducted to determine whether BS for weight loss is a risk factor for anemia.MethodsStudies were identified relevant papers published a cutoff date of May 2022 for meta-analysis by searching four electronic databases (PubMed, EMBASE, Web of Science and Cochrane Library). Pairs of authors conducted title and abstract, full-text assessment, data extraction and risk of bias assessment, and quality of articles. Random-effects models were used to estimate the pooled effect size and evaluated the overall quality of evidence. The sources of heterogeneity were assessed with I². The Newcastle-Ottawa scale (NOS) was used to assess the methodologic quality of selected studies. The publication bias was assessed using funnel plots and Egger's test statistics.ResultsIn all, eight studies comprising 3150 patients were finally included in the final study analysis. Of these, pooled analysis of eight studies detecting association between anemia and BS for weight loss yield a statistically significant correlation (SMD ?1.12 (?1.46—?0.78, I² = 93%). Subgroup analyses were performed according to postoperative follow-up time and operation method. Before 24 months postoperatively, no patient had a significant decrease in hemoglobin. More than 24 months after BS, patients show a significant reduction in hemoglobin. In addition, the hemoglobin level was not changed after sleeve gastrectomy (SG) and adjustable gastric banding (AGB) (SMD ?0.19 (?1.04—0.67, I² = 0% for SG; SMD ?0.30 (?0.82—0.22 for AGB), but the hemoglobin level was significantly reduced after Roux-en-Y gastric bypass (RYGB) (SMD ?1.19 (?1.52—?0.87, I² = 94.2%).ConclusionThis current meta-analysis found that at 24 months after RYGB, the patient's hemoglobin level was significantly reduced, increasing the risk of anemia. Therefore, attention should be paid to the occurrence of anemia after BS. A large, placebo-controlled, multi-center study is needed to clarify the role of BS for weight loss in this patient anemia.     

Association between chronic hepatitis C infection and metabolic syndrome: A meta-analysis

BackgroundHepatitis C virus (HCV) infected patients have been found to be more susceptible to metabolic syndrome (MetS), but the results remain unclear and lack of a meta-analysis.MethodsDatabases including PubMed, Web of Science, EMBASE and the Cochrane Library were searched to identify all studies concerning HCV and MetS. Funnel plots combined with Begg's tests and Egger's tests were used to analysis the possible publication bias. The odds ratios (ORs) with 95% confidence intervals (CIs) were used to access the effect of HCV infection on the risk of MetS.ResultsEight articles, involving a total of 57387 HCV patients were included. HCV infection was significantly associated with an increased incidence of MetS (OR = 1.73; 95% CI, 1.19–2.52). After adjustment according to the sensitivity analysis, one included article was removed to decrease the publication bias and high heterogeneity, of which the results showed that HCV infection was still associated with an increased incidence of MetS (OR = 1.93; 95% CI, 1.39–2.68).ConclusionsHCV patients tend to have a significant increased risk for MetS, but more large-scale studies are needed to confirm this and explore the exact mechanism.     

头孢他啶/阿维巴坦治疗革兰阴性菌感染疗效和安全性的Meta分析

 目的 评价头孢他啶/阿维巴坦（CAZ/AVI）治疗革兰阴性菌感染的疗效与安全性。方法 检索国内外数据库关于CAZ/AVI疗效与安全性的随机对照试验（RCT）,以临床治愈率为主要结局,微生物清除率与不良反应发生率为次要结局,应用Review Manage 5.3进行Meta分析。结果 7项RCT（3 792例患者）纳入Meta分析,在患者结束治疗时（RR=0.99,95%CI=0.96~1.01）、检测治愈时（RR=0.99,95%CI=0.96~1.02）、最后随访时（RR=1.00,95%CI=0.96~1.03）,CAZ/AVI组与对照组临床治愈率比较,差异均无统计学意义（均P>0.05）;微生物学改良意向治疗（mMITT）患者在检测治愈时,CAZ/AVI组与对照组临床治愈率比较,差异无统计学意义（RR=0.95,95%CI=0.89~1.00,P=0.06）,结束治疗时对照组优于CAZ/AVI组（RR=0.95,95%CI=0.92~0.98,P=0.005）。mMITT患者在结束治疗时（RR=1.00,95%CI=0.97~1.03）、检测治愈时（RR=1.07,95%CI=0.92~1.25）,CAZ/AVI组与对照组微生物清除率比较,差异均无统计学意义（均P>0.05,）,最后随访时CAZ/AVI组优于对照组（RR=1.12,95%CI=1.01~1.23,P=0.03）。CAZ/AVI组不良反应以及因不良反应导致停药发生率与对照组基本相似,但严重不良反应发生率CAZ/AVI组高于对照组（RR=1.26,95%CI=1.01~1.57,P=0.04）。结论 CAZ/AVI的疗效与其他抗菌药物相似,可以作为严重感染的替代药物,但考虑其严重不良反应发生率高于其他药物,仍需要更多高质量大规模的研究论证CAZ/AVI的安全性。