ABSTRACT
BACKGROUND: Left-behind children have become a particular concern in mainland China, and unintentional injury among these children has attracted increasing attention. This review aims to present the prevalence of unintentional injury among left-behind children and subgroups in mainland China. METHODS: A systematic literature search was conducted using four Chinese and two English databases. The included publications were cross-sectional studies in mainland China, of which the population was recruited according to inclusion and exclusion criteria. Information was collected using self-administered questionnaires. The risk of bias was estimated using the Strengthening the Reporting of Observational Studies in Epidemiology, and pooled prevalence was estimated through the DerSimonian-Laird proportion method. RESULTS: This review included 34 cross-sectional studies consisting 58,348 left-behind children in mainland China. Results showed that the pooled prevalence of unintentional injury was 38.24% (95% confidence interval (CI): 28.40-48.08) among left-behind children. The prevalence was higher among left-behind children (38.76%) than among non-left-behind children (27.94%), with an odds ratio of 1.65 (95% CI: 1.47-1.85). Furthermore, the prevalence of injury was higher among boys (39.12%) than among girls (28.61%), with an odds ratio of 1.58 (95% CI: 1.41-1.77). Falls had the highest prevalence of 20.79% among the types of unintentional injury. Furthermore, home was the occurrence location with the highest prevalence (16.20%). No significant difference in injury prevalence was observed among left-behind children without accompanying parents and those with single parent accompanying them. CONCLUSIONS: This review showed a relatively high injury prevalence among left-behind children in mainland China. Boys had a higher prevalence than girls. Falls had the highest prevalence, and home was the most common occurrence location.
Subject(s)
Prevalence , Child , China/epidemiology , Cross-Sectional Studies , Female , Humans , Male , Risk Factors , Surveys and QuestionnairesABSTRACT
OBJECTIVE： To explore the component， target and pathway of Panax notoginseng for coronary heart disease （CHD） and its potential molecular mechanism. METHODS： Based on network pharmacology， active components of P. notoginseng were retrieved with TCMSP platform. The targets of P. notoginseng for CHD were screened by using DRAR-CPI server， GeneCards and DisGeNET databases. Cytoscape 3.6.0 software was used to form the effective components-CHD targets network of P. notoginseng. String database was used to draw target interaction network. Network Analyzer tool was used to calculate target connectivity， and potential core targets were screened. Molecular docking between the core targets and the effective components of P. notoginseng was performed by Systems Dock Web Site server. KEGG pathway enrichment analysis and gene ontology （GO） enrichment analysis were also carried out to explore the important signal pathway and molecular function of P. notoginseng for CHD. “Effective component-target-signal pathway”network of important signal pathway were constructed. RESULTS： Five effective components （stigmasterol， β-sitosterol， ginsenoside rh2， quercetin， notoginsenoside r1） were screened from P. notoginseng for CHD， which acted on 96 targets and had 134 functional relationships. Five core targets were protein kinase B （AKT）， interleukin 6 （IL-6）， vascular endothelial growth factor A （VEGFA）， c-JUN protein （c-JUN） and heparin binding epidermal growth factor （HB-EGF）， which played an important role in the treatment of CHD by altering protein binding and regulating signaling pathways as phosphatidylinositol-3 kinase-protein/kinase B （PI3K/AKT）， hypoxia-inducible factor-1 （HIF-1） and mitogen-activated protein kinase （MAPK）. CONCLUSIONS： P. notoginseng in the treatment of CHD is not only play a variety of effects through the role of multiple targets， but also produce complex network regulation effect through the interaction between targets.
ABSTRACT
Objective To explore the association of catechol-O-methyhransferase(COMT) gene polymorphisms with schizophrenia susceptibility and its symptoms assessed by Positive and Negative Syndrome Scale (PANSS)in southern Chinese population.Methods COMT gene rs4633,rs4680 and rs8185002 polymorphisms were genotyped using Sequenom genotyping technology in 700 schizophrenia patients (300 Zhuang and 400 Han) and 700 healthy controls (300 Zhuang and 400 Han),and Positive and Negative Syndrome Scale (PANSS) was used for clinical symptoms assessment of patients.Statistical analysis was performed using PLINK software.Results rs4633,rs4680 and rs8185002 polymorphisms were not significantly associated with schizophrenia susceptibility in Zhuang or Han population respectively(P＞0.05).After merging Zhuang and Han samples,rs4633(I 2 =0.000,Pmeta =0.040) and rs4680 (I2=0.000,Pmeta =0.014) were significantly associated with the susceptibility to schizophrenia.In addition,haplotype T-A-T was significantly associated with schizophrenia susceptibility (P=0.049).However,these three polymorphisms were not significantly associated with total score,positive scale score,negative scale score and general psychopathology scale score assessed by PANSS(P＞0.05).Conclusion COMT gene rs4633 and rs4680 polymorphisms are involved in the susceptibility to schizophrenia in southern Chinese population.
