RÉSUMÉ
Objective@#To explore the prevalence of sexting among secondary vocational school students and to examine the correlation between sexting and mental health, so as to provide evidence for prevention and intervention on adolescents mental health.@*Methods@#In April 2021, three secondary vocational schools from central urban area, outskirts and outer suburbs in Shanghai, among 1 580 students were selected by cluster sampling.@*Results@#The proportions of students who received and who forwarded others private photos or videos were 11.96% and 2.78%, respectively. The proportion of students who sent others personal photos or videos was 2.54%. And the proportions of boys were higher than those of girls ( χ 2=45.89, 24.09, 6.66, P <0.01). The results of multivariable Logistic analysis showed that compared with those who had never sexted, students who had ever had any sexting were at higher risk of anxiety ( OR=2.40, 95%CI =1.59-3.61), depression( OR=1.86, 95%CI =1.25-2.75), non suicidal self injury intention ( OR=2.34, 95%CI =1.48-3.69) and suicidal intention ( OR=2.96, 95%CI =1.83-4.79)( P < 0.05 ).@*Conclusion@#There is a significant correlation between sexting and mental health among secondary vocational school students. The latent risks of sexting should be included in the curriculum of comprehensive sex education for teenagers to enhance their media literacy and decision making capability, so as to prevent sexual assault or abuse caused by sexting and promote sexual and reproductive health and as well as mental health of adolescents.
RÉSUMÉ
Objective To study the effect of hyperbaric oxygen (HBO) therapy on changes in the prolifera-tion of endogenous neural stem ceils (NSCs) in neonatal rats after hypoxie ischemic brain damage (HIBD). Meth-ods A total of 150 Sprague-Dawley rats aged 7 d were randomly divided into a normal eontrol group ( CON ), a HIBD group and a HBO treatment group. HBO was administered to the HBO treatment group within 3 h after HIBD at 2 atmospheres, once daily for 7 d. The HIBD model rats were subjected to unilateral carotid artery ligation followed by 2 h of hypoxia (8% O2> ). BrdU/nestin immunofluorescence was used to examine the proliferation of NSCs dynami-cally in the subventricular zone (SVZ) and the dentate gyms (DG) at the 3rd h, 21st h, 3rd d, 7th d and 14th d af-ter HBO therapy. Nestin protein was detected by Western blot analysis at various time points after HIBD. Results In the HIBD rats treated with HBO, proliferation of endogenous NSCs was observed in the SVZ and DG. The prolifer-ating NSCs increased at the 3rd h and 21st h after HBO therapy in the SVZ and DG respectively, peaked at the 7th d after HBO therapy, and decreased by the 14th d after HBO therapy, though their level was still higher than that in the controls. The Western blot analysis showed that nestin protein began to increase at the 21st h after HBO therapy, peaked at the 7th d after HBO therapy, then decreased. Conclusion HBO administered within 3 h after HIBD can promote proliferation of endogenous NSCs in neonatal rats after HIBD.