目的:研究不同甲状腺功能状态对孕妇血清高密度脂蛋白胆固醇(high density cholesterol,HDL-C)和载脂蛋白A-Ⅰ(apolipoprotein A-Ⅰ,ApoA-Ⅰ)代谢的影响。方法:采集30名甲状腺功能正常(正常组)、19名亚临床甲状腺功能减退(亚甲减组)及8名亚临床甲状腺功能亢进(亚甲亢组)孕妇孕9~12、14~17、23~26和37~40周的空腹血清标本,测其血清HDL-C和ApoA-Ⅰ含量。采用重复测量数据方差分析的秩和检验分析4个妊娠时段孕妇血清HDL-C、ApoA-Ⅰ含量的变化;采用一般线性模型(general linear model,GLM)分析3组孕妇孕期血清HDL-C、ApoA-Ⅰ含量的差异。结果:孕期各组孕妇血清HDL-C含量的变化差异均无统计学意义(χ~2=5.428,P=0.143;χ~2=2.027,P=0.567;χ~2=2.885,P=0.410),正常孕妇和亚甲减孕妇血清ApoA-Ⅰ的含量增高,差异均有统计学意义(χ~2=46.343,P〈0.001;χ~2=35.984,P〈0.001),亚甲亢孕妇血清ApoA-Ⅰ含量的变化差异无统计学意义(χ~2=6.750,P=0.080)。亚甲亢孕妇孕期血清HDL-C和ApoA-Ⅰ的含量均低于正常孕妇,差异均有统计学意义(P=0.025,P=0.027),正常孕妇与亚甲减孕妇孕期血清HDL-C和ApoA-Ⅰ含量的差异均无统计学意义(P=0.378,P=0.549)。结论:妊娠期亚甲亢影响孕妇血清HDL-C和ApoA-Ⅰ代谢,进而影响胎儿的生长发育;妊娠期亚甲减(经优甲乐治疗后)未发现影响孕妇血清HDL-C和ApoA-Ⅰ代谢。
Objective: To study the metabolism of high density lipoprotein cholesterol( HDL-C) and apolipoprotein A-Ⅰ( Apo A-Ⅰ) in different thyroid function status during pregnancy. Methods: This study recruited thirty cases of euthyroid,with nineteen cases of subclinical hypothyroid and eight cases of subclinical hyperthyroid pregnancy. The concentrations of fasting serum HDL-C and Apo A-Ⅰwere detected and analyzed from 9-12,14-17,23-26,and 37-40 gestational weeks. Friedman repeated measures ANOVA on ranks was adopted to analyze the changes of serum HDL-C and Apo A-Ⅰat different stages. General linear model( GLM) was adopted to analyze the differences of serum HDL-C and Apo A-Ⅰin different thyroid function status during pregnancy. Results: There were no significant differences of maternal serum HDL-C among different stages( χ~2= 5. 428,P = 0. 143,χ~2= 2. 027,P = 0. 567,χ~2= 2. 885,P = 0. 410). There were significant differences of serum Apo A-Ⅰ during euthyroid and subclinical hypothyroid pregnancies( χ~2=46. 343,P〈0. 001,χ~2= 35. 984,P〈0. 001),and no significant difference during subclinical hyperthyroid pregnancy( χ~2= 6. 750,P = 0. 080). There were significant differences of serum HDL-C and Apo A-Ⅰbetween euthyroid and subclinical hyperthyroid pregnancies( P = 0. 025,P = 0. 027),and no significant differences between euthyroid and subclinical hypothyroid pregnancies( P = 0. 378,P = 0. 549). Conclusion: Subclinical hyperthyroidism affected the metabolism of maternal serum HDL-C and Apo A-Ⅰ,which could affect the fetal growth and development. Subclinical hypothyroidism( after treatment with drugs) had no obvious effect on the metabolism of maternal serum HDL-C and Apo A-Ⅰ.