Objective To explore the effects of prenatal exposure to polybrominated diphenyl ethers(PBDEs)on placental size and birth outcomes.Methods Based on the perspective Wenzhou Birth Cohort,this nested case-control study i...Objective To explore the effects of prenatal exposure to polybrominated diphenyl ethers(PBDEs)on placental size and birth outcomes.Methods Based on the perspective Wenzhou Birth Cohort,this nested case-control study included 101 fetal growth restriction(FGR)and 101 healthy newborns.Maternal serum samples were collected during the third trimester and measured for PBDEs by gas chromatography tandem mass spectrometry.The basic information of mother-newborn pairs was collected from questionnaires,whereas the placental size and birth outcomes of newborns were obtained from hospital records.Results A total of 19 brominated diphenyle ether(BDE)congeners were detected in maternal serum samples.Higher concentrations of BDE-207,-208,-209,and∑19PBDEs were detected in FGR cases than in controls.Increased BDE-207,-208,-209,and∑19PBDEs levels in maternal serum were related to decreased placental length,breadth,surface area,birth weight,birth length,gestational age,and Quetelet index of newborns.After adjusting for confounders,BDE-207 and∑19PBDE concentrations in maternal serum were significantly associated with an increased risk of FGR.Conclusion A negative association was found between PBDE levels in maternal serum and placental size and birth outcomes.Prenatal PBDE exposure may be associated with elevated risk of the incidence of FGR birth.展开更多
Objective:The aim of this study was to calculate the expected incidence of chromosomal aneuploidy at second trimester genetic amniocentesis in China's Mainland in women aged 35 and older. Methods:We reviewed the g...Objective:The aim of this study was to calculate the expected incidence of chromosomal aneuploidy at second trimester genetic amniocentesis in China's Mainland in women aged 35 and older. Methods:We reviewed the genetic amniocenteses data in Peking Union Medical College Hospital between January 2001 to June 2011.The indication for genetic amniocentesis was solely advanced maternal age(AMA).A total of 6,584 cases were included in this study.The AMA women was divided into two groups by maternal age,the group of 35-39 years old and the group of≥40 years old.The incidence of fetal Down syndrome was compared between the two groups by chi-square test. Results:A total of 121 cases were diagnosed to be chromosomally abnormal,giving an overall incidence of 18.38‰(121/6,584).The abnormal karyotypes included 111 cases of various aneuploidies and 10 cases with various structural abnormalities.The aneuploidies(mosaicism included) were 59 cases of(47,+ 21),25 cases of (47,+ 18),2 cases of(47,+ 13),8 cases of(45,X),3 cases of(47,XXX),13 cases of(47,XXY) and 1 case of(47,XYY).The karyotype of(47,+21) was the most frequent chromosomal abnormality,with an overall incidence of 8.96‰,account for 53.1%of all aneuploidies.Sex chromosome aneuploidies were the next most common,with a total incidence of 3.80‰.The incidence of fetal Down syndrome was significantly higher in the group of≥40 years old than that of the group of 35-39 years old(P = 0.047). Conclusions:The incidence of chromosomal aneuploidy found in this study is the first data published for China's Mainland and will be helpful for the counseling of pregnant women in this age group.Consideration may be given to prenatal screening versus prenatal diagnosis in women of advanced maternal age in China's Mainland.展开更多
BACKGROUND Intrahepatic cholestasis of pregnancy(ICP)is a pregnancy-specific liver condition that typically arises in the middle and late stages of pregnancy.Short-chain fatty acids(SCFAs),prominent metabolites of the...BACKGROUND Intrahepatic cholestasis of pregnancy(ICP)is a pregnancy-specific liver condition that typically arises in the middle and late stages of pregnancy.Short-chain fatty acids(SCFAs),prominent metabolites of the gut microbiota,have significant connections with various pregnancy complications,and some SCFAs hold potential for treating such complications.However,the metabolic profile of SCFAs in patients with ICP remains unclear.AIM To investigate the metabolic profiles and differences in SCFAs present in the maternal and cord blood of patients with ICP and determine the clinical significance of these findings.METHODS Maternal serum and cord blood samples were collected from both patients with ICP(ICP group)and normal pregnant women(NP group).Targeted metabolomics was used to assess the SCFA levels in these samples.RESULTS Significant differences in maternal SCFAs were observed between the ICP and NP groups.Most SCFAs exhibited a consistent declining trend in cord blood samples from the ICP group,mirroring the pattern seen in maternal serum.Correlation analysis revealed a positive correlation between maternal serum SCFAs and cord blood SCFAs[r(Pearson)=0.88,P=7.93e-95].In both maternal serum and cord blood,acetic and caproic acids were identified as key metabolites contributing to the differences in SCFAs between the two groups(variable importance for the projection>1).Receiver operating characteristic analysis demonstrated that multiple SCFAs in maternal blood have excellent diagnostic capabilities for ICP,with caproic acid exhibiting the highest diagnostic efficacy(area under the curve=0.97).CONCLUSION Compared with the NP group,significant alterations were observed in the SCFAs of maternal serum and cord blood in the ICP group,although they displayed distinct patterns of change.Furthermore,the SCFA levels in maternal serum and cord blood were significantly positively correlated.Notably,certain maternal serum SCFAs,specifically caproic and acetic acids,demonstrated excellent diagnostic efficiency for ICP.展开更多
目的探讨苄星青霉素G不同用药时机治疗妊娠合并梅毒患者的效果及对母婴结局、甲苯胺红不加热血清试验(TRUST)滴度的影响。方法回顾性选取2019年1月至2021年12月临平区分娩单位的119例妊娠合并梅毒患者作为研究对象,根据苄星青霉素G用药...目的探讨苄星青霉素G不同用药时机治疗妊娠合并梅毒患者的效果及对母婴结局、甲苯胺红不加热血清试验(TRUST)滴度的影响。方法回顾性选取2019年1月至2021年12月临平区分娩单位的119例妊娠合并梅毒患者作为研究对象,根据苄星青霉素G用药时机分为孕早期组(≤13+6周,n=40)、孕中期组(14~27+6周,n=55)和孕晚期组(≥28周,n=24)。三组均给予苄星青霉素G进行治疗,均连续治疗2个疗程。比较三组治疗前后的氧化应激水平,产妇、新生儿TRUST滴度及母婴结局。结果与治疗前比较,治疗后三组血清隐性氧化蛋白产物(AOPP)、丙二醛(MDA)水平均降低,孕早期组均低于孕晚期组、孕中期组;与治疗前比较,治疗后三组血清超氧化物歧化酶(SOD)水平均升高,孕早期组高于孕晚期组、孕中期组;与孕晚期组、孕中期组比较,孕早期组患者及新生儿的TRUST阴性率、新生儿体重、出生后5 min Apgar评分均升高,先天梅毒儿、早产发生率均较低,差异具有统计学意义(P<0.05)。结论在孕早期采用苄星青霉素G治疗妊娠合并梅毒患者可有效改善其氧化应激水平,改善妊娠结局和围产儿的预后情况,提高产妇及新生儿的TRUST阴性率,减少先天梅毒儿、早产的发生。展开更多
基金the National Natural Science Foundation of China[No.21577026]。
文摘Objective To explore the effects of prenatal exposure to polybrominated diphenyl ethers(PBDEs)on placental size and birth outcomes.Methods Based on the perspective Wenzhou Birth Cohort,this nested case-control study included 101 fetal growth restriction(FGR)and 101 healthy newborns.Maternal serum samples were collected during the third trimester and measured for PBDEs by gas chromatography tandem mass spectrometry.The basic information of mother-newborn pairs was collected from questionnaires,whereas the placental size and birth outcomes of newborns were obtained from hospital records.Results A total of 19 brominated diphenyle ether(BDE)congeners were detected in maternal serum samples.Higher concentrations of BDE-207,-208,-209,and∑19PBDEs were detected in FGR cases than in controls.Increased BDE-207,-208,-209,and∑19PBDEs levels in maternal serum were related to decreased placental length,breadth,surface area,birth weight,birth length,gestational age,and Quetelet index of newborns.After adjusting for confounders,BDE-207 and∑19PBDE concentrations in maternal serum were significantly associated with an increased risk of FGR.Conclusion A negative association was found between PBDE levels in maternal serum and placental size and birth outcomes.Prenatal PBDE exposure may be associated with elevated risk of the incidence of FGR birth.
文摘Objective:The aim of this study was to calculate the expected incidence of chromosomal aneuploidy at second trimester genetic amniocentesis in China's Mainland in women aged 35 and older. Methods:We reviewed the genetic amniocenteses data in Peking Union Medical College Hospital between January 2001 to June 2011.The indication for genetic amniocentesis was solely advanced maternal age(AMA).A total of 6,584 cases were included in this study.The AMA women was divided into two groups by maternal age,the group of 35-39 years old and the group of≥40 years old.The incidence of fetal Down syndrome was compared between the two groups by chi-square test. Results:A total of 121 cases were diagnosed to be chromosomally abnormal,giving an overall incidence of 18.38‰(121/6,584).The abnormal karyotypes included 111 cases of various aneuploidies and 10 cases with various structural abnormalities.The aneuploidies(mosaicism included) were 59 cases of(47,+ 21),25 cases of (47,+ 18),2 cases of(47,+ 13),8 cases of(45,X),3 cases of(47,XXX),13 cases of(47,XXY) and 1 case of(47,XYY).The karyotype of(47,+21) was the most frequent chromosomal abnormality,with an overall incidence of 8.96‰,account for 53.1%of all aneuploidies.Sex chromosome aneuploidies were the next most common,with a total incidence of 3.80‰.The incidence of fetal Down syndrome was significantly higher in the group of≥40 years old than that of the group of 35-39 years old(P = 0.047). Conclusions:The incidence of chromosomal aneuploidy found in this study is the first data published for China's Mainland and will be helpful for the counseling of pregnant women in this age group.Consideration may be given to prenatal screening versus prenatal diagnosis in women of advanced maternal age in China's Mainland.
基金Supported by The Medical and Health Research Project of Zhejiang Province,No.2023KY1105the Traditional Chinese Medical and Health Research Project of Zhejiang Province,No.2022ZB328.
文摘BACKGROUND Intrahepatic cholestasis of pregnancy(ICP)is a pregnancy-specific liver condition that typically arises in the middle and late stages of pregnancy.Short-chain fatty acids(SCFAs),prominent metabolites of the gut microbiota,have significant connections with various pregnancy complications,and some SCFAs hold potential for treating such complications.However,the metabolic profile of SCFAs in patients with ICP remains unclear.AIM To investigate the metabolic profiles and differences in SCFAs present in the maternal and cord blood of patients with ICP and determine the clinical significance of these findings.METHODS Maternal serum and cord blood samples were collected from both patients with ICP(ICP group)and normal pregnant women(NP group).Targeted metabolomics was used to assess the SCFA levels in these samples.RESULTS Significant differences in maternal SCFAs were observed between the ICP and NP groups.Most SCFAs exhibited a consistent declining trend in cord blood samples from the ICP group,mirroring the pattern seen in maternal serum.Correlation analysis revealed a positive correlation between maternal serum SCFAs and cord blood SCFAs[r(Pearson)=0.88,P=7.93e-95].In both maternal serum and cord blood,acetic and caproic acids were identified as key metabolites contributing to the differences in SCFAs between the two groups(variable importance for the projection>1).Receiver operating characteristic analysis demonstrated that multiple SCFAs in maternal blood have excellent diagnostic capabilities for ICP,with caproic acid exhibiting the highest diagnostic efficacy(area under the curve=0.97).CONCLUSION Compared with the NP group,significant alterations were observed in the SCFAs of maternal serum and cord blood in the ICP group,although they displayed distinct patterns of change.Furthermore,the SCFA levels in maternal serum and cord blood were significantly positively correlated.Notably,certain maternal serum SCFAs,specifically caproic and acetic acids,demonstrated excellent diagnostic efficiency for ICP.
文摘目的探讨苄星青霉素G不同用药时机治疗妊娠合并梅毒患者的效果及对母婴结局、甲苯胺红不加热血清试验(TRUST)滴度的影响。方法回顾性选取2019年1月至2021年12月临平区分娩单位的119例妊娠合并梅毒患者作为研究对象,根据苄星青霉素G用药时机分为孕早期组(≤13+6周,n=40)、孕中期组(14~27+6周,n=55)和孕晚期组(≥28周,n=24)。三组均给予苄星青霉素G进行治疗,均连续治疗2个疗程。比较三组治疗前后的氧化应激水平,产妇、新生儿TRUST滴度及母婴结局。结果与治疗前比较,治疗后三组血清隐性氧化蛋白产物(AOPP)、丙二醛(MDA)水平均降低,孕早期组均低于孕晚期组、孕中期组;与治疗前比较,治疗后三组血清超氧化物歧化酶(SOD)水平均升高,孕早期组高于孕晚期组、孕中期组;与孕晚期组、孕中期组比较,孕早期组患者及新生儿的TRUST阴性率、新生儿体重、出生后5 min Apgar评分均升高,先天梅毒儿、早产发生率均较低,差异具有统计学意义(P<0.05)。结论在孕早期采用苄星青霉素G治疗妊娠合并梅毒患者可有效改善其氧化应激水平,改善妊娠结局和围产儿的预后情况,提高产妇及新生儿的TRUST阴性率,减少先天梅毒儿、早产的发生。
