Objective: To study the role of rs 12145833 polymorphism of SDCCAG 8 gene in the intervention of childhood obesity, so as to provide scientific basis for formulating personalized intervention measures based on genetic background in children with obesity. Methods: From September 2018 to June 2019, a total of 393 children aged 8-10 years in Beijing were enrolled in a cluster randomized controlled trial. Eight schools were randomly allocated into intervention group and control group at a ratio of 1∶1. Saliva DNA samples were collected to detect rs 12145833 polymorphism of SDCCAG 8 gene. The intervention group received a comprehensive intervention, while the control group received usual practice. Intervention measures included diet improvement, sports, school amd family sport. The obesity related indicators were measured at baseline and after the end of intervention 1 academic year. Multiple linear regression and Logistic regression were used to analyze the interaction between genes and intervention on obesity indicators. Results: In the intervention group, children with TT genotype of rs 12145833 of the SDCCAG 8 gene had less increase in systolic( β=4.56, 95%CI=1.84-7.28, P <0.01) and diastolic blood pressure( β=2.59, 95%CI=0.45-4.73, P <0.05) than those with GT and GG genotypes. In the control group, the systolic blood pressure of children with TT genotype increased more than those with GT and GG genotype( β=-2.86, 95%CI=-5.63--0.83, P <0.05). There was an interaction between rs 12145833 polymorphism of SDCCAG 8 gene and intervention on systolic blood pressure, diastolic blood pressure and body fat percentage in children( P <0.05). Conclusion Children with TT genotype of rs 12145833 in the SDCCAG 8 gene are more sensitive to obesity intervention than those with GG and GT genotypes, especially in the improvement of systolic blood pressure, diastolic blood pressure and body fat percentage. Further trials to study the role of rs 12145833 polymorphism of SDCCAG 8 gene in the intervention of childhood obesity among different ethnic populations are needed.

Abstract In recent decades, the prevalence of childhood obesity has increased at a alarming rate. The health hazards of childhood obesity are substantial, which has become an important public health problem. Lifestyle intervention is an effective means to prevent childhood obesity. However, individuals varied in their response to the intervention program, which may be associated with genetic factors. This paper systematically reviews the research progress of the effects of FTO, MC4R and other genetic variants on childhood obesity interventions, summarizes the limitations of current research and sheds light on the future research, so as to provide scientific evidence for individualized childhood obesity interventions based on genetic backgrounds.

Background::Differentiated thyroid cancer (DTC) is commonly diagnosed in women of child-bearing age, but whether pregnancy influences the prognosis of DTC remains controversial. This study aimed to summarize existing evidence regarding the association of pregnancy with recurrence risk in patients previously treated for DTC.Methods::We searched PubMed, Embase, Web of Science, Cochrane, and Scopus based on the prespecified protocol registered at PROSPERO (CRD42022367896). After study selection, two researchers independently extracted data from the included studies. For quantitative data synthesis, we used random-effects meta-analysis models to pool the proportion of recurrence (for pregnant women only) and odds ratio (OR; comparing the risk of recurrence between the pregnancy group and the nonpregnancy group), respectively. Then we conducted subgroup analyses to explore whether risk of recurrence differed by response to therapy status or duration of follow-up time. We also assessed quality of the included studies.Results::A total of ten studies were included. The sample size ranged from 8 to 235, with participants’ age at pregnancy or delivery ranging from 28 to 35 years. The follow-up time varied from 0.1 to 36.0 years. The pooled proportion of recurrence in all pregnant patients was 0.13 (95% confidence intervals [CI]: 0.06-0.25; I2: 0.58). Among six included studies reporting response to therapy status before pregnancy, we observed a trend for increasingly higher risk of recurrence from excellent, indeterminate, and biochemically incomplete to structurally incomplete response to therapy ( Ptrend <0.05). The pooled risk of recurrence in the pregnancy group showed no evidence of a significant difference from that in the nonpregnancy group (OR: 0.75; 95% CI: 0.45-1.23; I2: 0). The difference in follow-up time (below/above five years) was not associated with either the proportion of recurrence in all pregnant patients ( P >0.05) or the OR of recurrence in studies with a comparison group ( P >0.05). Two included studies that focused on patients with distant metastasis also did not show a significant difference in disease recurrence between pregnancy and nonpregnancy groups (OR: 0.51 [95% CI: 0.14-1.87; I2: 59%]). Conclusion::In general, pregnancy appears to have a minimal association with the disease recurrence of DTC with initial treatment. Clinicians should pay more attention to progression of DTC among pregnant women with biochemical and/or structural persistence.Registration::PROSPERO, https://www.crd.york.ac.uk/PROSPERO/; No. CRD42022367896.

Objective:To explore the association between self-control and the co-occurrence of depres-sive symptoms and overweight or obesity from adolescence to early adulthood in the Chinese population,and to provide a scientific basis for personalized interventions targeting individuals with different risks in the future.Methods:From a prospective cohort study that lasted for 10 years:The China family panel studies(CFPS),a total of 608 children and adolescents meeting the following inclusion and exclusion criteria were included as study subjects:(1)Aged 10 to 19 years,at normal weight according to Chinese standards,and without depressive symptom in 2010;(2)Had self-control scores,and with at least two measurements of depressive symptoms and body mass index(BMI)between 2010 and 2020;(3)The only one or the youngest child and adolescent from each family.The co-occurrence of depressive symp-toms and overweight or obesity was defined in three ways:Both of the average level of standardized scores of depressive symptoms and BMI Z-scores across multiple measurements over time were at a high level,or both of the trajectories of depressive symptoms and BMI over time based on the latent classification trajec-tory model(LCTM)belonging to the"risk-type",or individuals had depressive symptoms and over-weight/obesity at the last follow-up survey.The multinomial Logistic regression model was used to examine the association between standardized scores of self-control and the co-occurrence of depressive symptoms and overweight or obesity.Results:The score of self-control was associated with the co-occur-rence of depressive symptoms and overweight or obesity when using healthy individuals as the reference group after adjusting for age(years),gender(male/female),area(urban/rural),weekly physical ac-tivity duration(high/low),parental education level(college or above/high school or below),parental weight status(overweight or obese or not),and parental depressive symptoms(with depressive symptoms or not),regardless of the definition of the risk population.Specifically,the risk of co-occurrence of de-pressive symptoms and overweight or obesity was reduced by 33％(95％CI:14％to 48％,based on the average level across multiple measurements over time)to 78％(95％CI:6％to 95％,based on the joint trajectories of depressive symptoms and BMI over time)per 1-standard deviation(1-SD)increase in self-control score.In addition,the risk of depressive-symptom-dominant and overweight-or-obesity-dominant was reduced by 25％(95％CI:4％to 42％,only based on the average level across multiple measure-ments over time)and 21％(95％CI:1％to 37％,only based on the joint trajectories of depressive symptoms and BMI over time)per 1-SD increase in self-control score,respectively.The results from sen-sitivity analysis that defined individuals'weight status according to World Health Organization(WHO)standards were consistent with our main findings.Conclusion:Individuals with higher self-control scores from adolescence to early adulthood have a lower risk of co-occurrence of depressive symptoms and over-weight or obesity,suggesting that personalized interventions for co-occurrence of depressive symptoms and overweight or obesity can be carried out based on self-control scores in the future.

【Objective】 To explore the relationship between polygenic risk score (PRS) and the sustainability of childhood obesity intervention, in order to provide scientific basis for future sustainable and personalized childhood obesity intervention based on genetic background. 【Methods】 A total of 148 children with overweight/obesity at baseline were selected as study subjects from a cluster randomized controlled trial (September 2018 to April 2021) regarding the effect of a childhood obesity intervention in Beijing, China. Saliva was collected to detect the whole genome sequencing. Four PRSs were built: weighted and unweighted PRS69, weighted and unweighted PRS67. The interactions between PRS and study arms on the sustainability of intervention effect (the changes in obesity-related indicators between the end of the intervention and the last follow-up) were analyzed. 【Results】 There were interactions between PRS and study arms on the rebound degree of waist circumference adjusted for body mass index (BMI), waist-to-hip ratio adjusted for BMI, and systolic blood pressure after the intervention. Compared with the control group, children in the intervention group carried each additional unit (standard deviation) of weighted PRS69, the waist circumference adjusted for BMI rebounded more by 0.34 (95%CI: 0.05 - 0.63, P=0.020), and waist-to-hip ratio adjusted for BMI rebounded more by 0.29 (95%CI: 0.03 - 0.56, P=0.031) at the last follow-up survey. When children in the intervention group carried each additional unit (standard deviation) of weighted PRS67 and unweighted PRS67, systolic blood pressure at the last follow-up survey rebounded more by 3.58 (95%CI:0.50 - 6.66, P=0.023) and 3.75 (95%CI: 0.78 - 6.71, P=0.014), respectively. 【Conclusions】 The higher PRS (the more risk alleles) children with overweight/obesity carried, their waist circumference, waist-to-hip ratio and systolic blood pressure are more likely to rebound after the intervention. Findings from this study suggest that future studies should focus more on these high-risk children after the intervention to prevent and control obesity rebound.