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Cao H.,Anhui Medical University | Cao H.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Qian Q.,Centers for Disease Control and Prevention | Weng T.,Anhui Medical University | And 8 more authors.
Preventive Medicine | Year: 2011

Objective: To test the association between screen time (ST), physical activity (PA) and self-reported psychological problems among urban adolescents aged 11 to 16. years. Methods: In 2010, total 5003 boys and girls were analyzed from 4 junior high schools in Bengbu city of China. The Depression Self-rating Scale for Children, Screen for Child Anxiety Related Emotional Disorders and School Life Satisfaction Rating Questionnaire were administered to obtain information on current mental health. Self-reported ST, PA and dietary intake were also assessed. Logistic regression analyses were used to explore the effects of ST and PA on psychological problems. Results: Approximately 26.1% of adolescents were exposed to ST for more than 2. h/day. High ST was a risk factor for depressive symptoms (odds ratio (OR) = 1.52, 95% confidence interval (CI): 1.31-1.76), anxiety symptoms (OR= 1.36, 95%. CI: 1.18-1.57) and school life dissatisfaction (OR= 2.07, 95%. CI: 1.79-2.38). Sufficient vigorous PA (VPA) was a protective factor for depressive symptoms (OR= 0.78, 95%. CI: 0.67-0.91) and school life dissatisfaction (OR= 0.73, 95%. CI: 0.62-0.85). The combination of high ST and insufficient VPA was associated with the highest prevalence of various psychological problems. Conclusions: High ST and insufficient VPA interact to increase depressive, anxiety symptoms and school life dissatisfaction among Chinese adolescents. © 2011 Elsevier Inc.


Ding X.-X.,Anhui Medical University | Ding X.-X.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Wu Y.-L.,Anhui Medical University | Xu S.-J.,Anhui Medical University | And 10 more authors.
Sleep and Breathing | Year: 2014

Purpose: Previous investigations have suggested a strong association between sleep-disordered breathing (SDB) during pregnancy and perinatal outcomes. However, the results of the following replication studies were not always concordant. Therefore, this meta-analysis was conducted to evaluate the more reliable estimate.Methods: A systematic literature search was performed on PubMed, Springer Link, and EMBASE to identify all eligible studies published before August 2013. Summary odds ratios (ORs) and 95 % confidence intervals (CIs) were calculated using fixed or random effects model.Results: A total of 24 publications met the inclusion criteria and were included in this meta-analysis. Findings demonstrated that moderate-to-severe SDB during pregnancy was associated with gestational diabetes mellitus (OR = 1.78; 95 % CI, 1.29 to 2.46), pregnancy-related hypertension (OR = 2.38; 95 % CI, 1.63 to 3.47), preeclampsia (OR = 2.19; 95 % CI, 1.71 to 2.80), preterm delivery (OR = 1.98; 95 % CI, 1.59 to 2.48), low birth weight (OR = 1.75; 95 % CI, 1.33 to 2.32), neonatal intensive care unit (NICU) admission (OR = 2.43; 95 % CI, 1.61 to 3.68), intrauterine growth restriction (OR = 1.44; 95 % CI, 1.22 to 1.71), and Apgar score of <7 at 1 min (OR = 1.78; 95 % CI, 1.10 to 2.91) based on all studies but not gestational age and birth weight.Conclusions: This meta-analysis revealed that moderate-to-severe SDB during pregnancy may be associated with most of adverse perinatal outcomes. Further well-designed studies are warranted to confirm our findings. © 2014, Springer-Verlag Berlin Heidelberg.


Ding X.-X.,Anhui Medical University | Ding X.-X.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Wu Y.-L.,Anhui Medical University | Xu S.-J.,Anhui Medical University | And 14 more authors.
Journal of Affective Disorders | Year: 2014

Background Previous studies concerning the association between maternal anxiety during pregnancy and adverse birth outcomes have provided controversial findings. Methods In this systematic review, a meta-analysis was utilized to investigate the association between maternal anxiety and preterm birth (PTB) and/or low birth weight (LBW). Literature was searched until June 2013. Only prospective cohort studies that reported data on maternal anxiety during pregnancy with PTB and/or LBW were included. Pooled relative risks (RRs) with 95% conï.


Wu X.,Anhui Medical University | Wu X.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Tao S.,Anhui Medical University | Zhang Y.,Anhui Medical University | And 4 more authors.
PLoS ONE | Year: 2015

Objective: To test the independent and interactive associations of physical activity (PA) and screen time (ST) with self-reported mental health and sleep quality among Chinese college students. Method: Data were collected in October, 2013. The gender, age, residential background, body mass index (BMI), perceived family economy and perceived study burden were obtained from a total of 4747 college students (41.6% males and 58.4% females). The outcomes were self-reported PA status, ST, anxiety, depression, psychopathological symptoms and sleep quality. Analyses were conducted with logistic regression models. Results: Overall, 16.3%, 15.9% and 17.3% of the students had psychological problems, such as anxiety, depression and psychopathological symptoms, respectively. The prevalence of poor sleep quality was 9.8%. High ST was significantly positively associated with anxiety (OR=1.38, 95% CI: 1.15-1.65), depression (OR=1.76, 95% CI: 1.47-2.09), psychopathological symptoms (OR=1.69, 95% CI: 1.43-2.01) and poor sleep quality (OR=1.32, 95%CI: 1.06-1.65). High PA was insignificantly negatively associated with anxiety, depression, psychopathological symptoms and poor sleep. Low PA and high ST were independently and interactively associated with increased risks of mental health problems and poor sleep quality (p<0.05 for all). Conclusion: Interventions are needed to reduce ST and increase PA in the lifestyles of young people. Future research should develop and measure the impacts of interventions and their potential consequences on sleep, health, and well being. © 2015 Wu et al.


Gao H.,Anhui Medical University | Tao F.-B.,Anhui Medical University | Tao F.-B.,Anhui Provincial Key Laboratory of Population Health and Aristogenics
Thrombosis Research | Year: 2015

Background: Thrombophilia is reported to be a candidate etiology of recurrent pregnancy loss (RPL). No conclusive results on the association between prothrombin G20210A mutation and RPL have been reported. Methods: We undertook a systematic review and meta-analysis of 37 case-control studies using a comprehensive electronic search on papers published by May 2014. We studied 5400 cases and 4640 controls to investigate the potential association between G20210A and RPL. In this review, we define RPL as more than 2 miscarriages. Results: A significant association was found between G20210A and RPL, with a combined odds ratio (OR) of 1.81 (95% confidence interval [CI]: 1.26-2.60). However, the risks differed in the subgroup analyses, categorized by study sites, maternal age, and type of miscarriages. The pooled OR remained significant in European studies (OR: 1.80, 95% CI: 1.35-2.41), whereas in the Middle-Eastern studies, it was not significant (OR: 2.39, 95% CI: 0.96-5.92). The risk of RPL was significantly higher in women older than 29 years (OR: 1.91, 95% CI: 1.61-6.11), and a positive relationship was only observed between prothrombin G20210A mutation and fetal loss, but not embryonic loss. There was no evidence of publication bias in any of the analyses. The sensitivity analyses showed that the findings were quite stable. Conclusion: This meta-analysis suggests that the G20210A prothrombin mutation increases the risk of RPL (fetal loss, primary RPL, or secondary RPL), particularly in Europeans and women older than 29 years. We recommend further screening in more specific groups among women. © 2014 Elsevier Ltd. All rights reserved.


Cao H.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Cao H.,Anhui Medical University | Sun Y.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Sun Y.,Anhui Medical University | And 5 more authors.
BMC Public Health | Year: 2011

Background: Problematic Internet use (PIU) is a growing problem in Chinese adolescents. Little is known about associations of PIU with physical and psychological health. This study was designed to investigate the prevalence of PIU and to test the relationships between PIU and psychosomatic symptoms and life satisfaction among adolescents in mainland China. Methods. A cross-sectional survey was conducted comprising a large representative sample of 17 599 students in eight cities of China. PIU was assessed by the 20-item Young Internet Addiction Test (YIAT). The Multidimensional Sub-health Questionnaire of Adolescents and the Multidimensional Students' Life Satisfaction Scale were administered to obtain information on psychosomatic symptoms and life satisfaction. Demographics and Internet usage patterns were also collected. Logistic regression was used to assess the effects of PIU on psychosomatic symptoms and life satisfaction. Results: Approximately 8.1% of subjects showed PIU. Adolescents with PIU were associated with males, high school students, urban, eastern and western areas, upper self-report family economy, service type mostly used for entertainment and relieving loneliness and more frequency of Internet use. Compared with normal Internet users, adolescents with PIU were more likely to suffer from psychosomatic symptoms (P < 0.001), including lack of physical energy (P < 0.001), physiological dysfunction (P < 0.001), weakened immunity (P < 0.001), emotional symptoms (P < 0.001), behavioural symptoms (P < 0.001) and social adaptation problems (P < 0.001). Adolescents with PIU had lower scores on total and all dimensions of life satisfaction (all P < 0.001). Adjusted for the demographic and Internet-related factors, there was positive significant relationship between PIU and psychosomatic symptoms, but negatively related to life satisfaction. Conclusions: PIU is common among Chinese students, and PIU was significantly associated with psychosomatic symptoms and life satisfaction. Effective measures are needed to prevent the spread of this problem and interventions to prevent the effects of PIU on psychosomatic symptoms and life satisfaction should be conducted as early as possible. © 2011Cao et al; licensee BioMed Central Ltd.


Zhang Z.,Anhui Medical University | Zhang Z.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Liu Y.,Anhui Medical University | Xing Q.,Anhui Medical University | And 2 more authors.
Reproductive Biology and Endocrinology | Year: 2011

Background: Oocyte cryopreservation is an important method used in a number of human fertility circumstances. Here, we compared the survival, in vitro maturation, fertilization, and early embryonic development rates of frozen-thawed human immature oocytes using two different cryopreservation methods.Methods: A total of 454 failed-matured oocytes [germinal vesicle (GV) and metaphase I (MI) stages] were collected from 135 patients (mean age 33.84 +/- 5.0 y) who underwent intracytoplasmic sperm injection (ICSI) cycles between February 2009 and December 2009 and randomly divided into a slow freezing group [1.5 mol/L-1, 2-propanediol (PROH) + 0.2 mol/l sucrose] and vitrification group [20% PROH + 20% ethylene glycol (EG) + 0.5 mol/l sucrose].Results: The vitrification protocol yielded a better survival rate than the slow freezing protocol at each maturation stage assessed. Regardless of the maturation stage (GV + MI), the slow freezing protocol had a significantly lower survival rate than the vitrification protocol (p < 0.001). In addition, a significant difference was found in the survival rates between GV and MI oocytes regardless of the protocol used (90.1 vs. 64.7%, respectively; p < 0.01). We also found that the maturation rates of GV and MI oocytes from the slow freezing and vitrification groups were 16.7 vs. 24.4% and 50.8 vs. 55.4%, respectively. Regardless of the protocol used, the GV oocytes had significantly lower viability than MI oocytes after 36 h of in vitro maturation (21.2 vs. 54.0%, respectively; p < 0.01). In addition, the GV and MI oocytes from the slow freezing group had a markedly lower maturation rate than those from the vitrification group (33.6 vs. 43.1%, respectively), but no statistical difference was found between the two groups (P > 0.05). For the GV-matured oocytes, no fertilized eggs were obtained in the slow-freezing group, while a 19.0% (4/21) fertilization rate was observed in the vitrification group. For the MI-matured oocytes, fertilization rates for the slow freezing and vitrified groups were 36% and 61.1%, respectively, but no significant difference was found between the two groups (PIn the Methods section in the MS, all procedures were compliant with ethical guidelines, i.e. approved by the Ethical Committee of our university and Informed Consent signed by each patient. > 0.05). In the GV vitrification group, no embryo formed; however, in the MI slow freezing group, 12 oocytes were fertilized, but only two achieved cleavage and were subsequently blocked at the 2-cell stage. In the MI vitrification group, a total of 22 embryos were obtained, five of which developed to the blastocyst stage.Conclusions: Vitrification is superior to the slow freezing method in terms of the survival and developmental rates for the cryopreservation of human failed-matured oocytes. In addition, GV oocytes appeared to be more resistant than MI oocytes to the low temperature and cryoprotectant used during cryopreservation. © 2011 Zhang et al; licensee BioMed Central Ltd.


Zhao M.,Anhui Medical University | Zhao M.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Chen Y.-H.,Anhui Medical University | Chen Y.-H.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | And 9 more authors.
PLoS ONE | Year: 2013

Increasing evidence demonstrates that maternal folic acid (FA) supplementation during pregnancy reduces the risk of neural tube defects, but whether FA prevents preterm delivery and intrauterine growth restriction (IUGR) remains obscure. Previous studies showed that maternal lipopolysaccharide (LPS) exposure induces preterm delivery, fetal death and IUGR in rodent animals. The aim of this study was to investigate the effects of FA on LPS-induced preterm delivery, fetal death and IUGR in mice. Some pregnant mice were orally administered with FA (0.6, 3 or 15 mg/kg) 1 h before LPS injection. As expected, a high dose of LPS (300 μg/kg, i.p.) on gestational day 15 (GD15) caused 100% of dams to deliver before GD18 and 89.3% of fetuses dead. A low dose of LPS (75 μg/kg, i.p.) daily from GD15 to GD17 resulted in IUGR. Interestingly, pretreatment with FA prevented LPS-induced preterm delivery and fetal death. In addition, FA significantly attenuated LPS-induced IUGR. Further experiments showed that FA inhibited LPSinduced activation of nuclear factor kappa B (NF-κB) in mouse placentas. Moreover, FA suppressed LPS-induced NF-κB activation in human trophoblast cell line JEG-3. Correspondingly, FA significantly attenuated LPS-induced upregulation of cyclooxygenase (COX)-2 in mouse placentas. In addition, FA significantly reduced the levels of interleukin (IL)-6 and keratinocyte-derived cytokine (KC) in amniotic fluid of LPS-treated mice. Collectively, maternal FA supplementation during pregnancy protects against LPS-induced preterm delivery, fetal death and IUGR through its anti-inflammatory effects. © 2013 Zhao et al.


Tao X.,Anhui Medical University | Tao X.,Anhui Provincial Key Laboratory of Population Health and Aristogenics | Jiang A.,Anhui Medical University | Yin L.,Anhui Medical University | And 4 more authors.
Menopause | Year: 2015

Objective There is no universal consensus on the relationship between body mass index (BMI) and age at natural menopause (ANM). The primary bias was confounding by cigarette smoking because smoking was a strong confounding factor related to lower BMI and earlier menopause. This meta-analysis was conducted to estimate the effect of BMI on ANM. Methods Medline and EMBASE databases were searched for relevant studies up to December 2013. Studies were selected for analysis based on certain inclusion and exclusion criteria. Hazard ratios (HRs) with 95% CI were extracted to assess the association between BMI and early ANM. Results Nine studies were selected for this meta-analysis. The HR of early ANM was 1.08 (95% CI, 1.03-1.14; P < 0.01) in underweight women compared with women of normal BMI. Compared with women of normal BMI, overweight women (HR, 0.93; 95% CI, 0.91-0.96; P < 0.001) and obese women (HR, 0.95; 95% CI, 0.79-1.15; P = 0.59) were associated with late ANM. In addition, the HRs of early ANM in overweight and obese women were 0.92 (95% CI, 0.90-0.94; P < 0.001) and 0.88 (95% CI, 0.82-0.95; P < 0.001), respectively, compared with underweight women. A separate meta-analysis indicated that the results (HR, 0.85; 95% CI, 0.81-0.90; P < 0.001) changed markedly in the comparison of obese versus normal-weight women in studies that controlled for smoking. Conclusions The results of our study indicate that increased BMI modestly associates with later ANM. The relationship between BMI and ANM needs further clarification in well-designed studies, especially studies well-controlled for smoking status. © 2014 by The North American Menopause Society.


Hua W.-J.,Anhui Medical University | Jin J.-X.,Anhui Medical University | Wu X.-Y.,Anhui Medical University | Yang J.-W.,Shenyang Aier Eye Hospital | And 4 more authors.
Ophthalmic and Physiological Optics | Year: 2015

To determine whether elevated light levels in classrooms in rural areas can protect school-age children from myopia onset or myopia progression. Methods: A total of 317 subjects from 1713 eligible students aged six to 14 in four schools located in northeast China participated in the study. Students received a comprehensive eye examination including cycloplegic refraction and ocular biometry, which included axial length (AL), anterior chamber depth (ACD), and corneal curvature (CC) measurement, and completed a questionnaire. The intervention arm included 178 students in two schools with rebuilt elevated lighting systems and the control arm included 139 students in which lighting systems were unchanged. Results for the two arms were compared with a Wilcoxon rank sum test, a chi-squared test or a t-test, as appropriate. Factors that might help explain any differences were explored with multivariate linear regression analysis. Results: The median average illuminance of blackboards and desks and uniformity of desk lighting were significantly improved, however, the uniformity of blackboard lighting declined after intervention. At baseline, the mean refraction, AL, CC, ACD and myopia prevalence between the two arms were not significantly different. After 1 year, compared with the control arm the intervention arm had a lower incidence of new myopia onset (4% vs 10%; p = 0.029), a smaller decrease in refractive error among no myopic subjects (-0.25 dioptre [D] vs -0.47 D; p = 0.001), and shorter axial growth for both non-myopic (0.13 vs 0.18 mm; p = 0.023) and myopic subjects (0.20 vs 0.27 mm; p = 0.0001). Multivariate linear regression analysis showed the intervention program, lower hyperopic baseline refraction, lower father's education level, longer time sleeping and less time in screen-viewing activities were associated with less refractive shift in the direction of myopia in non-myopic children. For myopic subjects, myopia progression was significantly associated with family income only. The intervention program and older age had a protective effect on axial growth for both myopic and non-myopic subjects. The father's education level and sleep duration were significantly associated with axial growth in non-myopic children. Conclusions: Elevated light levels in classrooms have a significant effect on myopia onset, decreases in refraction, and axial growth; if the findings of lighting intervention are reproduced in future studies, the ambient light levels in schools should be improved. © 2015 The College of Optometrists.

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