[Associations between birth outcomes with blood pressure level and risk of high blood pressure in childhood].

OBJECTIVE: To explore the associations between birth outcomes and blood pressure, and study the sex dimorphism of these associations. METHODS: With a multistage cluster random sampling method, 62 168 children were recruited in seven provinces of China in September of 2013, with 32 064 boys and 30 104 girls, median age of 10.74 years and mean birth weight of 3.3 kg, 49 843 single birth(97%), 1339 twin(2.6%), 180 triplet or more(0.4%). Questionnaire investigation and physical examination were conducted in the present study. Weight, height and blood pressure were measured in the physical examination. Demographic characteristics, birth outcomes(including birth weight and number of births), dietary behavior, physical activities were measured by questionnaire. The widely used age-, gender-and height-specific high blood pressure standard developed by American CDC was used for the present study. Multivariate linear and logistic regression analysis were conducted to study the associations between birth outcomes and blood pressure level or high blood pressure(HBP), and also sex dimorphism of these associations was explored. RESULTS: A total of 5933 children were categorized as having high blood pressure in the 62 168 participants(9.5%). With stratified analyses by birth weight category, only in the low-birth-weight strata birth weight was significantly inversely associated with systolic blood pressure(SBP) and diastolic blood pressure(DBP) with potential covariates adjusted(SBP: b=-1.628, 95%CI-2.571--0.685, P=0.001; DBP: b=-1.463, 95%CI-2.186--0.740, P<0.001). While compared with the non-low birth weight children, low birth weight was not associated with higher risk of HBP(P>0.05). Compared with those boys born as singleton, boys born as one of the twins have a 36.4% higher risk of HBP(OR=1.364, 95%CI 1.049-1.774), while in girls no such significant association was found. Additionally, compared with a term birth, overdue birth and preterm birth was not associated with higher risk of HBP(P>0.05). CONCLUSION: Birth weight and singleton or not were associated with childhood blood pressure levels and higher risk of high blood pressure, and some associations were sex specific. Gender differences should be paid attention to in the prevention and control of high blood pressure in children and adolescents in the future, and the prevention and control should be focused on low-birth weight children or twin boys.

[Association between regional fat mass and risk of nonalcoholic fatty liver disease in overweight/obese adults].

OBJECTIVE: To explore the relationship between fat distribution and non-alcoholic fatty liver(NAFLD) in overweight/obese adults. METHODS: This cross-sectional study included 736(190 men and 546 women) 19-56 years old overweight/obese people in Beijing were selected by convenient sampling. Their age and body mass index(BMI) distribution were 36(31-46) years old and 28.0(26.2-30.7), respectively. The body fat mass and regional fat mass were measured by dual energy X-ray absorptiometry(DXA), and Logistic regression model was used to analyze the association between regional fat mass and the risk of NAFLD. RESULTS: The prevalence of NAFLD was 70.0%(515/736) in overweight/obese population. In the multivariate Logistic model, after adjusting for age, gender, BMI, hypertension and body fat mass, waist circumference(WC), thigh fat mass and android fat mass were significantly association with NAFLD risk(P<0.05), but no association was found between arms, trunk and gynoid fat mass and NAFLD risk. There were interactions between thigh fat mass and age(P_(interaction)<0.001) and BMI group(P_(interaction)=0.001). Subgroup analysis showed that thigh fat mass and NAFLD risk were significantly associated in ≤36-year-old(OR=0.62, 95%CI 0.48-0.81), male(OR=0.32, 95%CI 0.16-0.64) and overweight(OR=0.48, 95%CI 0.36-0.64) groups, but in the >36-year-old, female and the obesity group this association was not statistically significant. There was an interaction between trunk fat mass and age group(P_(interaction)=0.009). There was a positive correlation between trunk fat mass and NAFLD risk in >36-year-old group(OR=1.63, 95%CI 1.35-1.97), but no association was found in ≤36-year-old group. In addition, we also found that a significant interaction between gynoid fat mass and BMI group on NAFLD(P_(interaction)<0.001). In overweight, gynoid fat mass was negatively correlated with the risk of NAFLD(OR=0.12, 95% CI 0.06-0.25), but in the obesity group, the association was not statistically significant. There were no statistically significant interactions between WC, arms fat mass and android mass and age, sex and BMI groups. CONCLUSION: WC, android fat mass and thigh fat mass are associated with the risk of NAFLD. Thigh fat mass has a significant interaction with age and BMI group on the risk of NAFLD(only in ≤36-year-old group, male and overweight group a significant protective effect of thigh fat on NAFLD was found, but not in >36-year-old group, female and obesity group). Trunk fat mass had an interaction with age(the association between trunk fat mass and NAFLD was significant in >36-year-old group). Gynoid fat mass and BMI group also have a significant interaction on NAFLD(the detrimental effect of gynoid fat on NAFLD is much more profound in the obesity group).

Sex differences in the associations between adiposity distribution and cardiometabolic risk factors in overweight or obese individuals: a cross-sectional study.

BACKGROUND: We aimed to assess the associations between adiposity distribution and cardiometabolic risk factors among overweight and obese adults in China, and to demonstrate the sex differences in these associations. METHODS: A total of 1221 participants (455 males and 766 females) were included in this study. Percentage of body fat (PBF) of the whole body and regional areas, including arm, thigh, trunk, android, and gynoid, were measured by the dual-energy X-ray absorptiometry method. Central adiposity was measured by waist circumference. Clustered cardiometabolic risk was defined as the presence of two or more of the six cardiometabolic risk factors, namely, high triglyceride, low high density lipoprotein, elevated glucose, elevated blood pressure, elevated high sensitivity C-reactive protein, and low adiponectin. Linear regression models and multivariate logistic regression models were used to assess the associations between whole body or regional PBF and cardiometabolic risk factors. RESULTS: In females, except arm adiposity, other regional fat (thigh, trunk, android, gynoid) and whole-body PBF are significantly associated with clustered cardiometabolic risk, adjusting for age, smoking, alcohol drinking, physical activity, and whole-body PBF. One-SD increase in Z scores of the thigh and gynoid PBF were significantly associated with 80 and 78% lower odds of clustered cardiometabolic risk (OR: 0.20, 95%CI: 0.12-0.35 and OR: 0.22, 95%CI: 0.12-0.41). Trunk, android and whole-body PBF were significantly associated with higher odds of clustered risk with OR of 1.90 (95%CI:1.02-3.55), 2.91 (95%CI: 1.75-4.85), and 2.01 (95%CI: 1.47-2.76), respectively. While in males, one-SD increase in the thigh and gynoid PBF are associated with 94% (OR: 0.06, 95%CI: 0.02-0.23) and 83% lower odds (OR: 0.17, 95%CI: 0.05-0.57) of clustered cardiometabolic risk, respectively. Android and whole-body PBF were associated with higher odds of clustered cardiometabolic risk (OR: 3.39, 95%CI: 1.42-8.09 and OR: 2.45, 95%CI: 1.53-3.92), but the association for trunk PBF was not statistically significant (OR: 1.16, 95%CI: 0.42-3.19). CONCLUSIONS: Adiposity distribution plays an important role in the clustered cardiometabolic risk in participants with overweight and obese and sex differences were observed in these associations. In general, central obesity (measured by android PBF) could be the best anthropometric measurement for screening people at risk for CVD risk factors for both men and women. Upper body fat tends to be more detrimental to cardiometabolic health in women than in men, whereas lower body fat is relatively more protective in men than in women.

Meeting 24-Hour Movement and Dietary Guidelines: Prevalence, Correlates and Association with Weight Status among Children and Adolescents: A National Cross-Sectional Study in China.

China is confronted with a "double burden" of underweight and overweight/obesity in children and adolescents. This study aimed to investigate the prevalence and correlates of meeting 24 h movement and dietary guidelines among Chinese children and adolescents. Further, the study aimed to examine the association of meeting 24 h movement and dietary guidelines with weight status in Chinese children and adolescents. A total of 34,887 Chinese children and adolescents were involved. Only 2.1% of participants met the 24 h movement guidelines. Compared to those who met all three 24 h movement guidelines, those who only met the sleep duration guideline was significantly associated with a higher risk of underweight (p < 0.05), and those who only met the moderate-to-vigorous physical activity, or screen time guidelines were significantly associated with a higher risk of overweight/obesity (p < 0.05). Compared with those meeting the dietary guidelines, those who did not meet the soft drink intake guideline had a significantly lower risk of underweight (p < 0.05), those who did not meet the fruit intake guideline had a significantly lower risk of overweight/obesity (p < 0.05), and those who did not meet the milk intake guideline showed a significantly higher risk of overweight/obesity (p < 0.001). These findings indicate a significant association between meeting the 24 h movement and dietary guidelines and weight status among Chinese children and adolescents.

ATP2B1 gene polymorphisms rs2681472 and rs17249754 are associated with susceptibility to hypertension and blood pressure levels: A systematic review and meta-analysis.

OBJECTIVE: The present study aimed to conduct a systematic review and meta-analysis to evaluate the relationships between ATP2B1 gene polymorphisms with blood pressure (BP) level and susceptibility to hypertension. METHODS: PubMed, Web of Science, Embase and China National Knowledge Infrastructure (CNKI) Databases were systematically searched by 2 independent researchers to screen studies on ATP2B1 gene polymorphisms and BP related phenotypes. The records retrieval period was limited from the formation of the database to March 4, 2021. Pooled odds rations (ORs) or ß and their 95% confidence intervals (95%CI) were calculated to assess the association between ATP2B1 gene polymorphisms and the risk of hypertension or BP levels. Publication bias and sensitivity analysis were conducted to find potential bias. All the statistical analysis were conducted with Stata version 11.0 software. RESULTS: A total of 15 articles were ultimately included in the present study, including 15 polymorphisms of ATP2B1 gene. Nine articles (N = 65,362) reported the polymorphism rs17249754, and 7 articles(N = 91,997) reported rs2681472 (both loci were reported in 1 article). Meta-analysis showed that rs17249754 (G/A) and rs2681472 (A/G) were associated with the susceptibility to hypertension (rs17249754: OR = 1.19, 95%CI: 1.10-1.28; rs2681472: OR = 1.15, 95%CI: 1.12-1.17), and were positively associated with systolic BP (SBP) and diastolic blood pressure (DBP) (rs17249754: SBP, ß=1.01, 95%CI: 0.86-1.16, DBP, ß=0.48, 95%CI: 0.30-0.66; rs2681472: SBP, ß=0.92, 95%CI: 0.77-1.07, DBP, ß=0.50, 95%CI: 0.42-0.58) in the additive genetic model. Subgroup analysis stratified by race, population, sample size, and BP measurement method revealed that the association between A allele in rs2681472 polymorphism and risk of hypertension was slightly stronger in European (EUR) populations (OR = 1.16, 95%CI: 1.13-1.20) than in East Asians (OR = 1.14, 95%CI: 1.10-1.17). While in East Asians, relation between rs17249754 with risk of hypertension (OR = 1.19, 95%CI: 1.10-1.28) is stronger than rs2681472 (OR = 1.14, 95%CI: 1.10-1.17). CONCLUSIONS: Our study demonstrated that ATP2B1 gene polymorphism rs2681472 and rs17249754 were associated with BP levels and the susceptibility to hypertension.

Sero-epidemiology study of hepatitis B virus surface antibodies from 2017 to 2019 among Chinese young adults in Hunan Province: A three-year retrospective study.

BACKGROUND: Data on the epidemiology characteristics of hepatitis B surface antibodies (anti-HBs) are lacking among central southern undeveloped areas of China, especially for young adults. This study aims to demonstrate the sero-epidemiology characteristics of HBsAb among young adults. AIMS: The aim of this study is to demonstrate the epidemiological characteristics in prevalence of serum anti-HBs in college students of a university in Hunan Province, China. METHODS: Data were derived from the health records (including serum HBsAb data) among freshmen of a university from 2017 to 2019 in Hunan Province, China. RESULTS: A total of 13,426 freshmen with complete data who were born in Hunan Province were collected. The 3-year total prevalence of anti-HBs in freshmen was 44.75% with no statistically significant sex difference, the prevalence of anti-HBs is 46.93%, 53.13%, and 34.79% for 2017, 2018, and 2019, respectively. There are significant geographic differences of prevalence of anti-HBs in freshmen from different areas. The lowest prevalence of anti-HBs was 31.80% in freshmen from Xiangtan, and the highest prevalence of anti-HBs was 53.10% in freshmen from Yongzhou. CONCLUSION: The prevalence of serum anti-HBs among the freshmen in Hunan from 2017 to 2019 is much lower than the average national level, and the prevalence in 2019 is significantly lower than that in 2017 and 2019. There are significant differences in different time and areas of the prevalence of anti-HBs. There is a necessity to carry out area-specific intensive immunization plan in a timely manner among young population in Hunan Province, China.

Impact of short-term change of adiposity on risk of high blood pressure in children: Results from a follow-up study in China.

This study aimed to examine the impact of short-term adiposity change on risk of high blood pressure (HBP), and to assess the low limit range of body mass index (BMI) and waist-to-height ratio (WHtR) reduction proposed to decrease the HBP risk in children. Children were longitudinally surveyed at baseline and after a short-term follow-up. General obesity (GOB) is categorized by age and gender-specific BMI cut-off points, abdominal obesity (AOB) by WHtR. Logistic regression model was used to estimate relations between adiposity change and HBP risk with adjustment of covariates. A total of 28,288 children (median of baseline age:10 years) were involved with follow-up of 6.88±1.20 months. After the follow-up, 9.4% of the children had persistent general obesity (GOB), 2.8% converted from GOB to non-GOB, 0.9% had newly developed GOB. When compared with children remained non-GOB, children with continuous GOB status, newly developed GOB, converting from GOB to non-GOB had 5.03-fold (95%CI: 4.32~5.86), 3.35-fold (95%CI: 1.99~5.65), 2.72-fold (2.03~3.63) HBP risk, respectively. Similar findings were observed for abdominal obesity (AOB). Reduction of 0.21-0.88 kg/m2 of baseline BMI (0.86-3.59%) or 0.009-0.024 of baseline WHtR (1.66-4.42%) in GOB or AOB children, respectively, was associated with significant decrease in HBP risk. Children with persistent obesity, newly developed obesity, or converting from obese to non-obese had significantly higher HBP risk. For children with GOB or AOB, reduction of <3.6% in BMI or <4.5% in WHtR could decrease the HBP risk.

Prevalence and risk factors for hyperhomocysteinemia: a population-based cross-sectional study from Hunan, China.

OBJECTIVES: Hyperhomocysteinemia is an independent risk factor for cardiovascular diseases. We aimed to investigate the prevalence and risk factors for hyperhomocysteinemia, especially modifiable lifestyle factors, such as smoking behaviour and dietary factors. DESIGN: Population-based cross-sectional study. SETTING: Hunan Province, China PARTICIPANTS: A total of 4012 participants completed the study, between July 2013 and March 2014. The median age is 55 (interquartile range: 45-63) years, with 1644 males (41%) and 2368 females (59%). MAIN OUTCOME MEASURES: Homocysteine level were measured by the microplate enzyme immunoassay method. Hyperthomocysteinemia was defined as ≥15 µmol/L. Questionnaire was used to investigate potential risk factors of hyperhomocysteinemia. Crude odd ratio (OR) or adjusted OR with 95% CI were determined by using univariable or multivariable logistic regression models. RESULTS: The prevalence of hyperhomocysteinemia is 35.4% (45.4% vs 28.5% for men, women, respectively). One-year increase in age is significantly associated with 2% higher risk of hyperhomocysteinemia (OR=1.02, 95% CI: 1.01 to 1.03). One unit increase of BMI is associated with 5% higher risk of hyperhomocysteinemia (OR=1.05, 95% CI: 1.03 to 1.07). Compared with the non-smoker, smoking participants have a 24% higher risk of hyperhomocysteinemia (OR=1.24, 95% CI: 1.006 to 1.53), while the risk for those quitting smoking are not significantly different (OR=1.14, 95% CI: 0.85 to 1.54). compared with those consuming fruit and vegetable at least once every day, those consuming less than once every day had a significantly higher risk of hyperhomocysteinemia (OR=1.29, 95% CI:1.11 to 1.50). In addition, we found there were significant sex interaction with education level or alcohol drinking on the risk of hyperhomocysteinemia (pinteraction <0.05). CONCLUSIONS: Higher BMI and older age are potential risk factors for hyperhomocysteinemia. Current smoking but not quitting smoking is associated with higher risk of hyperhomocysteinemia. Fruit and vegetable consumption may have protective effect against hyperhomocysteinemia. Alcohol consumption or education level might interact to influence the risk of hyperhomocysteinemia.

Association Between Eating Speed and Metabolic Syndrome: A Systematic Review and Meta-Analysis.

Objective: This review aimed to systematically summarize and meta-analyze the association between eating speed and metabolic syndrome (MetS). Methods: Following the Preferred Reporting Items for Systematic Reviews, and Meta Analyses (PRISMA) guidelines, four electronic databases (PubMed, Web of Science, MEDLINE, and EMBASE) were searched until March 2021 to identify eligible articles based on a series of inclusion and exclusion criteria. Heterogeneity was examined using I 2 statistics. Using random-effects models, the pooled odds ratios (ORs), and 95% CIs were calculated to evaluate the association between eating speed with MetS and its components, including central obesity, blood pressure (BP), high-density lipoprotein cholesterol (HDL), triglyceride (TG), and fasting plasma glucose (FPG). Results: Of the 8,500 original hits generated by the systematic search, 29 eligible studies with moderate-to-high quality were included, involving 465,155 subjects. The meta-analysis revealed that eating faster was significantly associated with higher risks of MetS (OR = 1.54, 95% CI: 1.27-1.86), central obesity (OR = 1.54, 95% CI: 1.37-1.73), elevated BP (OR = 1.26, 95% CI: 1.13-1.40), low HDL (OR = 1.23, 95% CI: 1.15-1.31), elevated TG (OR = 1.29, 95% CI: 1.18-1.42), and elevated FPG (OR = 1.16, 95% CI: 1.06-1.27) compared to eating slowly. Conclusions: The results of the review indicated that eating speed was significantly associated with MetS and its components. Interventions related to decreasing eating speed may be beneficial for the management of MetS. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021242213, identifier: CRD42021242213.

Bullying Victimization and Life Satisfaction Among Rural Left-Behind Children in China: A Cross-Sectional Study.

Objectives: This study aimed to evaluate the associations between bullying victimization and life satisfaction in primary school children and also investigate the interactive effects of left-behind status and bullying victimization on life satisfaction. Materials and Methods: Bullying victimization was measured using the Chinese version of the revised Olweus Bully/Victim Questionnaire. Life satisfaction was assessed using the Multidimensional Students' Life Satisfaction Scale (MSLSS). Life satisfaction is composed of five domains, namely, family, school, friends, environment, and self-satisfaction. Left-behind status of rural children was defined as one or both their parents migrating to working in cities. The data were analyzed using Mann-Whitney U tests, Chi-square tests, and multivariate linear and logistic regression analyses. Results: A total of 810 primary school children were involved, of which 8.5% reported bullying victimization, and 44.3% were left-behind children (LBC). We found that bullying victimization was negatively associated with all domains of life satisfaction (all p < 0.05). With further left-behind status-stratified analysis, we found that negative association between bullying victimization and friend satisfaction was more profound in the LBC group than in the non-LBC group [b(SE)= -0.133 (0.03) vs. -0.061 (0.026) for LBC and non-LBC, respectively, p < 0.05]. When further interaction analysis was conducted, we identified interaction effects between left-behind status and bullying victimization on friend satisfaction (p interaction = 0.048). Similar interaction effect between bullying victimization and left-behind status on school satisfaction was also found (p interaction = 0.004). Conclusions: Bullying victimization was associated with low life satisfaction (including lower family, friends, school, self, and environment satisfaction). There were significant interactions between left-behind status and bullying victimization on friend satisfaction, as well as school satisfaction. Left-behind status of children may exaggerate the impact of bullying victimization on friends/school satisfaction rating.

Prevalence of Hyperhomocysteinemia in China: An Updated Meta-Analysis.

We conducted a meta-analysis to systematically assess the prevalence of hyperhomocysteinemia (HHcy) in China, its change over time, and its determinants. Literature searches were conducted using English databases (PubMed, Embase, and Web of Science) and Chinese databases (CNKI, CBM, VIP, and Wanfang). The time ranges were from Jan 2014 to Mar 2021 in China. We adopted the random effects model to estimate the pooled positive rates of HHcy and corresponding 95% confidence intervals (95% CI). To find the sources of heterogeneity, we performed subgroup analysis and meta-regression. A total of 29 related articles were identified involving 338,660 participants with 128,147 HHcy cases. The estimated prevalence of HHcy in China was 37.2% (95% CI: 32.6-41.8%, I2 = 99.8%, p for heterogeneity < 0.001). The trend of HHcy prevalence was gradually upward over time, with increases during 2015-2016 (comparison to 2013-2014, p < 0.001), but steady between 2015-2016 and 2017-2018. Subgroup analysis showed that the prevalence was higher in the elderly over 55 years old, males, and residents in the north, inland, and rural China (for each comparison, p < 0.001). Meta-regression analysis revealed that age and area of study contributed to 42.3% of the heterogeneity between studies. The current meta-analysis provides strong evidence that the prevalence of HHcy is increasing in China, and varies substantially across different ages, genders, and geographic distribution. Accordingly, high-risk population groups should be focused on, and public health policies and strategies should be carried out to prevent and control HHcy in China.