The timing of the adiposity rebound (AR) gradually shifted to earlier ages throughout the world; early AR is possible associated with the development of metabolic disease for life. It needs further research to discover the predictive effects of early AR on metabolic risk factors in childhood. Based on Ma’anshan Birth Cohort Study (MABC), a total of 3 171 singleton children, will befollowed up for 3 years consecutively. Length/height, weight and body composition will be collected every six months, and blood sampling and measurement of plasma lipids, blood sugar, systolic blood pressure (SBP) and diastolic blood pressure (DBP), inflammatory factor will be performed between the ages of 4.5 and 6. The prevalence of early AR and gender differences will be described. A nested-case-control study will be carried out. Children with AR before age 4 years will be included in the case group, while healthy control will be selected through 1:1 matching by age and gender. The associations between weight gain in pregnancy, birth weight, breastfeeding, length and weiight gain in infant and early AR, as well as the independent and joint effect of early AR and BMI/fat mass at the time of AR on metabolic risk factors between the ages of 4.5 and 6 will be examined. This study hoped to reveal whether joint effect of early AR and high BMI/fat mass at the time of AR could better predict metabolic risk in children.
脂肪重积聚(adiposity rebound,AR)发生时间在世界范围内呈提前趋势,个体AR时相提前是终生代谢性疾病的早期危险因素,而其对童年期代谢风险因子的预测意义有待进一步阐明。本研究以先期建立的包括3 171名单胎活产儿的马鞍山优生优育队列(MABC)为基础,继续追踪随访3年,每6个月测量身长/身高、体重、体成分等指标,在4.5~6岁时检测血脂、血糖、血压、炎性因子等代谢风险因子,描述AR时相提前的现状及其性别差异;采用巢式病例对照研究设计,以4岁前出现AR儿童为病例,1:1选取同性别、年龄相差±1个月内的儿童为对照,分析AR时相提前与母亲孕期增重、出生体重、母乳喂养和婴儿期身长体重增加的关联;探讨AR时相提前及AR发生时BMI/脂肪量水平独立和联合作用对4.5~6岁时代谢风险因子的影响,以揭示AR时相提前和AR时相提前时高BMI/脂肪量水平联合效应能否较好预测儿童代谢风险
脂肪重积聚(adiposity rebound,AR)发生时间在世界范围内呈提前趋势,个体AR时相提前是终生代谢性疾病的早期危险因素,而其对童年期代谢风险因子的预测意义有待进一步阐明。课题组建立了马鞍山优生优育出生队列,对3岁以后儿童,每6个月测量身高、体重、体成分等指标,在5~6岁时检测血脂、血糖、血压、炎性因子等代谢风险因子,并在不同年龄段进行问卷调查,获得儿童家庭代养情况、生活方式、饮食模式等相关信息。.对已经收集到的有连续性人体测量数据≥8次且有完整代谢各指标数据进行分析,结果发现有43.5%学龄前儿童界定为AR提前(AR≤4岁)。AR提前组5岁儿童超重/肥胖(OR=2.71,95%CI:1.81~4.05)、腰围超标(OR=1.88,95%CI:1.25~2.82)、体脂肪百分比≥P90(OR=2.09,95%CI:1.26~3.48)的发生风险均上升,差异均有统计学意义(P<0.01);AR提前组5岁儿童胰岛素抵抗和代谢风险因子得分高于未提前组,但是差异无统计学意义(P分别为=0.441和0.075),需要引起注意。本研究还发现,5岁超重肥胖儿童、腰围超标、腰高比超标和体脂百分比≥P90者,胰岛素抵抗和代谢风险因子得分均较高,差异均有统计学意义(P<0.001)。.研究也发现,孕前母亲超重/肥胖者其子女在4岁时发生肥胖、腰围超标、腰高比超标的风险要高,其OR值(95%CI)分别为3.27(2.15~4.98)、2.32(1.72~3.14)和2.29(1.73~3.04);且与人体成分相关指标(骨骼肌、体脂肪、体脂百分比)相关(P均<0.05)。孕期患有GDM者,其儿童4岁时肥胖发生风险要比母亲未患有GDM者高1.78倍(OR=1.78,95%CI:1.14~2.79)。运用潜变量增长模型(LCGM)拟合儿童早期BMI的增长轨迹,以轨迹适宜组儿童作为参考,回归模型显示:孕母孕期增重过度可显著增加儿童发生较快轨迹的可能性(OR=1.55,95%CI:1.22~1.96);孕期增重不足可能预测儿童早期较慢轨迹的发生(OR=1.58,95%CI:1.16~2.16)。与纯母乳喂养组相比,混合喂养、人工喂养可显著降低较快模式发生的危险(OR=0.55,95%CI:0.41~0.73;OR=0.40,95%CI:0.29~0.55)。
{{i.achievement_title}}
数据更新时间:2023-05-31
妊娠对雌性大鼠冷防御性肩胛间区棕色脂肪组织产热的影响及其机制
神经退行性疾病发病机制的研究进展
武功山山地草甸主要群落类型高光谱特征
儿童多发性大动脉炎10例临床分析
巴戟天抗去卵巢骨质疏松大鼠的血清代谢组分析
PAHs暴露与儿童青春发动时相提前的相关性研究
肥胖与儿童青春发动时相提前的因果推断:孟德尔随机化研究
脂肪酸代谢调节重编程的研究
低脂肪入量的中国人对静脉脂肪乳剂的扩清和代谢的研究