Objective To evaluate the expression and clinical significance of Survivin in the tissues of laryngeal carcinoma using meta-analysis. Methods The case-control studies published in China about the expression and association of clinical pathogenic features of Survivin in the tissues of laryngeal carcinoma were electronically retrieved in CBM (1994 to October 2012), CNKI (1994 to October 2012), VIP (1989 to October 2012) and WanFang Data (1996 to October 2012). The reviewers independently identified the literature according to inclusion and exclusion criteria, extracted data, and assessed the quality of the included studies. Then, meta-analysis was performed using RevMan 5.1 software. Results A total of 25 studies were included, involving 1 333 cases of laryngeal carcinoma and 528 cases of health laryngeal mucosa or polyp of vocal cord. The results of meta-analysis showed that, significant differences were found in groups of laryngeal carcinoma vs. health control, laryngeal carcinoma with vs. without lymphatic metastasis, clinical stages I-II vs. III-IV, cell differentiation G1 vs. G2-G3, T1 and T2 stages vs. T3 and T4 stages, and glottic carcinoma vs. non-glottic carcinoma (Plt;0.05). No significant difference was found in groups of age more than 60 vs. no less than 60, male vs. female, and smoke vs. non-smoke (Pgt;0.05). Conclusion Current domestic evidence shows that Survivin may be associated with the whole course of occurrence, advance and transfer of laryngeal carcinoma, and positively correlated to degree of tumor malignance, which may indicate poor prognosis.
ObjectivesTo systematically review the association between the variants of HNF1B gene and the risk of prostate cancer.MethodsPubMed, EMbase, The Cochrane Library, CNKI, CBM and WanFang Data databases were electronically searched to collect case-control studies on the association between the variants of HNF1B gene and risk of prostate cancer from inception to December, 2017. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Meta-analysis was then performed using Stata 14.0 software.ResultsA total of 15 case-control studies involving 30 532 patients and 38 832 controls were included. The results of meta-analysis showed that: there was a strong significant association between rs4430796 variants (Gvs.A: OR=0.802, 95%CI 0.784 to 0.821, P<0.001; GGvs.AA: OR=0.659, 95%CI 0.606 to 0.717, P<0.001; AGvs.AA: OR=0.762, 95%CI 0.714 to 0.814, P<0.001), rs11649743 variants (Avs.G: OR=0.875, 95%CI 0.820 to 0.941, P<0.001; AAvs.GG: OR=0.669, 95%CI 0.564 to 0.792, P<0.001; AGvs.GG: OR=0.855, 95%CI 0.798 to 0.916, P<0.001), rs7501939 variants (Avs.G: OR=0.833, 95%CI 0.807 to 0.859, P<0.001), rs3760511 variants (Avs.C: OR=0.834, 95%CI 0.803 to 0.868, P<0.001) and risk of prostate cancer.ConclusionsCurrent evidence shows that HNF1B gene variants are associated with risk of prostate cancer. Due to limited quantity and quality of the included studies, more high quality studies are required to verify the above conclusion.
ObjectivesTo systematically review the proportion of Tregs in peripheral blood of patients with ankylosing spondylitis (AS) and its relationship with Treg's diffrent phenotypes.MethodsPubMed, EMbase, The Cochrane Library, CNKI, WanFang Data and VIP databases were electronically searched to collect case-control studies on peripheral Tregs of AS patients from inception to November 31st, 2018. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Then, meta-analysis was performed by using Stata 12.0 software.ResultsA total of 61 case-control studies involving 2 466 AS patients and 1 879 controls were included. The results of meta-analysis showed that: the proportion of peripheral Tregs of patients with AS was significantly lower than that of the normal control (SMD=?0.905, 95%CI ?1.294 to ?0.517, P<0.000 1), and the proportion of Tregs in the disease-active group was significantly lower than that in disease-inactive group (SMD=?0.928, 95%CI ?1.431 to ?0.425, P<0.000 1). The proportion of CD4+CD25+FOXP3+Tregs and CD4+CD25+CD127low/?Tregs were lower in AS patients than that in control subjects (SMD=?2.547, 95%CI ?3.521 to ?1.573, P<0.000 1; SMD=?0.709, 95% CI ?1.056 to ?0.362, P<0.000 1). The proportion of Tregs defined by CD4+CD25low/?FOXP3+ was higher in AS patients (SMD=0.683, 95%CI 0.161 to 1.206, P=0.01). There was no significant difference betweew other phenotypes of Tregs groups.roups.ConclusionsThe reduction of Tregs may be one of the important reasons for the occurrence and development of AS, which may provide a new approach for the diagnosis and treatment of AS.
ObjectivesTo systematically review the risk factors of acute fatigue in patients with stroke.MethodsPubMed, Web of Science, EMbase, The Cochrane Library, CNKI, VIP and WanFang Data databases were electronically searched to collect case-control studies, cohort studies and cross-sectional studies on the risk factors of acute fatigue in patients with stroke from inception to April, 2019. Two reviewers independently screened literature, extracted data and assessed risk of bias of included studies, then, meta-analysis was performed by using RevMan 5.3 software.ResultsA total of 14 studies involving 2 658 objects and 13 risk factors were included. The results of meta-analysis showed that: female (OR=1.54, 95%CI 1.23 to 1.94, P=0.000 2), rural residence (OR=1.46, 95%CI 1.11 to 1.91, P=0.007), diabetes mellitus (OR=1.54, 95%CI 1.24 to 1.92, P<0.000 1), hyperlipidemia (OR=1.41, 95%CI 1.10 to 1.80, P=0.007), coronary heart disease (OR=1.94, 95%CI 1.30 to 2.89, P=0.001), previous stroke history (OR=1.54, 95%CI 1.07 to 2.23, P<0.000 01), pre-stroke fatigue (OR=4.51, 95%CI 3.33 to 6.09, P<0.000 01), basal ganglia stroke (OR=2.76, 95%CI 1.21 to 6.29, P<0.000 01), NIHSS >3 (OR=2.11, 95%CI 1.59 to 2.79, P<0.000 01), admission glucose level (OR=1.08, 95%CI 0.38 to 1.78, P=0.003), post-stroke sleep disorder (OR=2.40, 95%CI 1.87 to 3.07, P<0.000 01), post-stroke pain (OR=2.32, 95%CI 1.56 to 3.45, P<0.000 1) and post-stroke depression (OR=3.31, 95%CI 1.94 to 5.66, P<0.000 1) were risk factors of acute fatigue in patients with stroke.ConclusionsCurrent evidence shows that female, rural residence, diabetes mellitus, hyperlipidemia, coronary heart disease, previous stroke history, pre-stroke fatigue, basal ganglia stroke, NIHSS>3, admission glucose level, post-stroke sleep disorder, post-stroke pain and post-stroke depression are the risk factors of acute fatigue in patients with stroke. Medical staff should strengthen targeted preventive care for high-risk patients with related risk factors in order to reduce the incidence of post-stroke fatigue and improve the clinical prognosis outcome of patients.
ObjectiveTo systematically review the association between H type hypertension and acute coronary syndromes in China.
MethodsWe electronically searched databases including PubMed, Web of Science, CNKI, CBM, VIP and WanFang Data databases to collect case-control studies about the association between H type hypertension and acute coronary syndromes among the Chinese population from inception to May, 2015. Two reviewers independently screened literature, extracted data, and evaluated the risk of bias of included studies. Then, meta-analysis was performed by using RevMan 5.2 software.
ResultsA total 6 studies involving 992 patients were included. Among these cases, 438 cases were in the acute coronary syndromes group (case group) and 554 were in the control group. The results of metaanalysis showed that: proportion of H type hypertension patients in the case group was significantly higher than that in the control group (OR=3.32, 95%CI 2.21 to 4.98, P<0.000 01).
ConclusionCurrent evidence shows that, H type hypertension may be associated with acute coronary syndromes in the Chinese population. Due to the limited quantity and quality of included studies, more high quality studies are needed to verify the above conclusion.
ObjectiveTo systematically review the association between maternal folate supplementation during pregnancy and the risk of autism spectrum disorder (ASD) in the offspring.MethodsPubMed, EMbase, Web of Science, The Cochrane Library, Scopus, CNKI, WanFang Data, VIP and CBM databases were electronically searched to collect case-control and cohort studies on the association between maternal folate supplementation during pregnancy and the risk of ASD in the offspring from inception to December 2020. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Meta-analysis was then performed using RevMan 5.3 and Stata 14.0 software.ResultsA total of 17 studies involving 10 812 cases and 876 241 controls were included. The results of meta-analysis showed that there was no significant association between maternal folate supplementation during pregnancy and the risk of ASD in the offspring in the total population. The subgroup analysis revealed that maternal folate supplementation during pregnancy was statistically associated with a reduced risk of ASD in the offspring in the Asian population (OR=0.71, 95%CI 0.53 to 0.96, P=0.03). However, there were no statistical correlations in European and American populations.ConclusionsCurrent evidence shows that maternal folate supplementation during pregnancy may reduce the risk of ASD in the offspring in the Asian population. Due to limited quality and quantity of the included studies, more high-quality studies are required to verify the above conclusions.
ObjectiveTo systematically review the relationship between Cadmium (Cd) level and Alzheimer's disease (AD).
MethodWe searched PubMed, EMbase, CNKI, WanFang Data and CBM databases from inception to December 2014 to collect case-control studies about the relationship between Cd level and AD. Two reviewers screened literature, extracted data and evaluated the risk of bias of included studies, and then meta-analysis was performed by using RevMan 5.3 software.
ResultsA total of 11 studies were included, among them 8 studies were included into final meta-analysis. Three studies including 154 patients and 141 controls reported the relationship of serum Cd concentrations and AD, and the result of meta-analysis showed that the higher serum Cd level was found in the AD group than the control group (SMD=0.36, 95%CI 0.12 to 0.59, P=0.003). Six studies including 358 patients and 423 controls reported the relationship of blood Cd concentrations and AD, and the result of meta-analysis showed that there was no significant difference of blood Cd levels between both groups (SMD=0.35, 95%CI -0.14 to 0.84, P=0.16).
ConclusionSerum Cd concentrations may be associated with AD, but blood Cd concentrations not. Due to the limitation of quality and quantity of the included studies, more high quality studies are needed to verify the above conclusion.
ObjectivesTo systematically review the correlation between maternal serum selenium levels during pregnancy and premature birth.MethodsDatabases including PubMed, The Cochrane Library, EMbase, Web of Science, CNKI and CBM were searched to collect studies on correlation between maternal serum selenium levels during pregnancy with preterm birth in the offspring from inception to January, 2020. Two reviewers independently screened literature, extracted data and evaluated risk of bias of the included literature. Then, meta-analysis was conducted by using RevMan 5.3 software.ResultsA total of 12 studies involving 2 484 patients were included. The results of meta-analysis showed that compared with control group, the preterm group had lower serum selenium levels in pregnant females (SMD=?0.89, 95%CI ?1.56 to ?0.22, P=0.01). The results of the subgroup analysis showed that heterogeneity among subjects was still large when grouped accorcding to the continent to which a country belongs, the time of blood sample collection and test method in pregnant females.ConclusionsLow maternal serum selenium levels during pregnancy may increase the risk of preterm birth. Due to the limitation of the quantity and quality of the included studies, the above conclusions are required to be verified by more high quality studies.
Objective To systematically review the association between exposure to bisphenol A during pregnancy and spontaneous abortion. Methods The PubMed, Web of Science, EMbase, CNKI, WanFang Data and VIP databases were electronically searched to identify cohort studies and case-control studies related to bisphenol A exposure and spontaneous abortion from inception to April 1st, 2022. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed using Stata 16.0 software. Results A total of 7 case-control studies and 1 cohort study were included, with a total of 1 179 subjects. The results of meta-analysis showed that there was a statistically significant difference in bisphenol A concentrations between the spontaneous abortion group and the control group regardless of whether the sample source was serum or urine (SMD serum=1.05, 95%CI 0.34 to 1.77, P=0.004; SMD urine=0.20, 95%CI 0.02 to 0.38, P=0.027). Conclusion The current evidence shows that exposure to bisphenol A during pregnancy may lead to unexplained recurrent spontaneous abortion. Due to the limited quantity and quality of the included studies, more high-quality studies are needed to verify the above conclusion.
ObjectiveTo systematically review the correlation between the expression of hypoxia inducible factor-1α (HIF-1α) protein and different clinical pathological features of renal cell cancer.
MethodsWe electronically searched databases including The Cochrane Library, PubMed, EMbase, CNKI, VIP, CBM and WanFang Data from inception to June 2015 to collect case-control studies investigating the correlation between HIF-1α protein expression and different clinical pathological features of renal cell cancer. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of included studies. Then meta-analysis was performed using RevMan 5.3 software.
ResultsA total of 8 case-control studies involving 429 cases of renal cell cancer and 130 cases of normal renal tissue were included. The results of meta-analysis showed that:HIF-1α protein expression was higher in the renal cell cancer group than that in the normal renal tissue group (OR=16.76, 95%CI 8.53 to 32.92, P<0.000 01); HIF-1α protein expression was higher in the lymph node metastasis group than that in the non-lymphnode metastasis group (OR=4.33, 95%CI 2.53 to 7.39, P<0.000 01); HIF-1α protein expression was higher in the TNM Ⅲ-IV group than that in the TNM I-Ⅱ group (OR=0.30, 95%CI 0.18 to 0.51, P<0.000 1); HIF-1α protein expression was higher in the Fuhrman pathology classification G3+G4 group than that in the G1+G2 group (OR=0.54, 95%CI 0.29 to 0.98, P=0.04). However, there were no significant differences in HIF-1α protein expression between the age≥50 group and the age <50 group (OR=1.09, 95%CI 0.54 to 2.19, P=0.82), and between the male group and the female group (OR=0.77, 95%CI 0.48 to 1.25, P=0.29).
ConclusionHIF-1α protein expression is significantly correlated to the clinical stage and pathological grading of renal cell cancer. It is possibly involved in the initiation and development of renal cell cancer. Due to the limited quantity and quality of included studies, the above conclusion needs to be further verified by more high quality studies.
