摘要
目的 研究产妇尿液中邻苯二甲酸酯类(PAEs)物质代谢物的水平与11[3-羟基类固醇脱氢酶(11B—HSD2酶)活性的关联,初步探索PAEs影响胎儿宫内发育的可能机制。方法 2012年采用单纯随机抽样法抽取宫内发育迟缓(IUGR)新生儿33例,并匹配正常对照新生儿33名,采用高效液相色谱一串联质谱法测定产妇尿液中4种PAEs代谢物,即邻苯二甲酸单丁酯(MBP)、邻苯二甲酸(2-乙基己基)单酯(MEHP)、邻苯二甲酸(2一乙基一5羟基己基)单酯(MEHHP)、邻苯二甲酸(2一乙基一5氧己基)单酯(MEOHP)和3种皮质醇皮质酮代谢物,即四氢皮质醇(THF)、allo-四氢皮质醇(allo—THF)、四氢皮质酮(THE)的含量,并分析产妇尿液中PAEs代谢物的水平与11B—HSD2酶活性的关联。结果 66名产妇尿液样本中MBP、MEHP、MEHHP、MEOHP代谢物的检出率分别为98%(65名)、89%(59名)、91%(60名)、91%(60名);病例组母亲尿液样本中MBP、MEHHP、MEOHP和DEHP合计(SumDEHP)的中位数分别为31.20、24.61、11.72和48.67ng/ml,高于对照组(分别为17.32、12.03、5.68和28.64ng/ml),差异均具有统计学意义(P值均〈0.05);病例组母亲体内1113-HSD2的活性[(THF+allo—THF)/THE=(0.79±0.09)ng/ml]低于对照组[(THF+allo—THF)/THE=(0.58±0.04)ng/m1];男婴母亲尿液中MBP(β′=1.12)、MEHHP(β′=1.14)、MEOHP(β′=1.10)、SumDEHP(β′=1.08)的含量与11p—HSD2的活性呈负相关,差异有统计学意义(P值均〈0.05)。结论 PAEs可能通过抑制11B—HSD2的活性影响胎儿宫内发育。
Objective To study the association hetween phthalate esters (PAEs) metabolites in maternal urine and 11 beta-hydroxysteroid dehydrogenase type 2 ( 11 β-HSD2 ) enzyme activity, explore the possible mechanism of PAEs effect on fetal development. Methods All of 33 cases of intrauterine growth retardation (IUGR) newborn were selected by random sampling in 2012. And 33 cases of normal control newborn were enrolled, use high performance liquid chromatography-tandem mass spectrometry method was used to detect 4 kinds of phthalate esters (PAEs) metabolites in maternal urine:mono-n-butyl phthalate ester ( MBP), mono (2-ethylhexyl) phthalate ( MEHP), mono ( 2-ethyl-5-hydroxyhexyl ) phthalate ( MEHHP ), mono (2-ethyl-5-oxohexyl) phthalate (MEOHP) and three kinds of cortisol corticosterone metabolites, tetrahydroeortisol (THF), allo-tetrahydrocortisol (allo-THF), tetrahydrocortisone (THE), and analyze the association between phthalate esters (PAEs) metabolites in maternal urine and 11 β-HSD2 enzyme activity. Results MBP,MEHP,MEHHP,MEOHP metabolites carl be detected in 98% (65 cases) ,89% (59 cases) , 91% ( 60 cases) , 91% ( 60 cases) of all 66 maternal urine samples, respectively. The median concentrations of test material in case group were 31.20 ng/ml for MBP,24. 61 ng/ml for MEHHP, 11.72 ng/ml for MEOHP and 48.67 ng/ml for SumDEHP which were significantly higher than those of the control group( were 17.32,12. 03,5.68 and 28. 64 ng/ml) ; llβ-HSD2 activity in case group ( ( THF + allo-THF)/THE = (0. 79 ± 0. 09) ng/ml ) was significantly lower than that of the control group ( (THF + allo-THF)/THE = (0. 58±0. 04) ng/ml) ; PAEs metabolites MBP( β′ = 1.12) ,MEHHP( [β′ = 1. 14) ,MEOHP( [β′ = 1.10), SumDEHP( β′ = 1.08) in baby boy mother's urine was reversely correlated to 11β-HSD2 activity. Conclusions PAEs could affect fetal development by inhibit 1113-HSD2 activity.
出处
《中华预防医学杂志》
CAS
CSCD
北大核心
2014年第9期800-804,共5页
Chinese Journal of Preventive Medicine
基金
基金项目:国家自然科学基金项目(81072263)
浙江省人口和计划生育科技项目(2010-78)