Prevalence of internet addiction and the related factors in middle school students in Guangzhou / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the status of and the factors contributing to Internet addiction among middle school students in Guangzhou.</p><p><b>METHODS</b>Cluster sampling method was used to recruit an urban middle school, a rural junior middle school and a rural senior high school to conduct the survey with the stressful life event questionnaire, the trait-oriented coping styles questionnaire and the Internet Addiction Test.</p><p><b>RESULTS</b>The majority of respondents were classified as normal users of the Internet (n=1392, 89.2%), with 158 (10.2%) moderately and 10 (0.6%) severely addicted to the Internet. Fifty-eight students had never used the Internet. There were significant differences in gender, the father's education, the 4 dimensions of the stressful life event questionnaire and the coping styles between students with and without Internet addiction. Binary logistic analysis showed that the factors contributing to Internet addiction included passive coping styles, male gender and stressful life event experienced in family and interpersonal communication.</p><p><b>CONCLUSIONS</b>The incidence of Internet addiction is high among middle school students in Guangzhou. Male students with stressful life events in family and interpersonal communication, poor education on the part of the father, and frequent use of negative coping styles are more likely to develop Internet addiction.</p>

Association study of sleep apnea syndrome and polymorphisms in the serotonin transporter gene / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To identify polymorphisms of the serotonin transporter(5-HTT) gene and to find out whether there was relationship between any such polymorphisms and sleep apnea syndrome (SAS).</p><p><b>METHODS</b>For two polymorphisms of 5-HTT target DNA gene was amplified using polymerase chain reaction (PCR) and 6% non-denaturing polyacrylamide gels electrophoresis. The frequencies of the different forms of the genotypes and alleles of 5-HTT gene were analyzed in 104 patients with SAS and 150 healthy controls.</p><p><b>RESULTS</b>The frequencies of the S or L alleles and the S/S, S/L or L/L genotypes in promoter region of 5-HTT gene in SAS group were not significantly different to those in healthy controls (P > 0.05). However, the frequencies of 10/10, 12/10 genotypes of 5-HTT-VNTR in SAS patients were significantly higher than those in healthy control subjects (P < 0.05). Moreover, the frequency of the allele 10 of 5-HTT-VNTR in SAS patients was significantly higher than that in healthy controls (P<0.01).</p><p><b>CONCLUSION</b>The allele 10 of 5-HTT-VNTR might be a susceptible factor in the pathogenesis of SAS.</p>

Quality of Life of Patient with Primary Insomnia / 中国心理卫生杂志

Objective:To explore the quality of life in patients with primary insomnia.Methods:Comprising 85 patients diagnosed as primary insomnia and 57 healthy controls,the study analyzed and compared the differences in quality of life between the two groups.Results:(1)Compared with healthy controls,the patients with primary in- somnia decreased in quality of life.total score,Physical functions,psychological function and social function in pri- mary insomnia group were significantly lower than those in control group in score of generic quality of life inventory (score:254.9?26.4/287.1?30.4,t=-5.15,P