Androgen concentrations in umbilical cord blood and their association with maternal, fetal and obstetric factors

The aim of this study was to measure umbilical blood androgen concentrations in a birth cohort using a highly specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay and assesses the effects of sex, labor, and gestational age on fetal androgen levels at birth. We performed a prospec...

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Veröffentlicht in:PloS one 2012-08, Vol.7 (8), p.e42827-e42827
Hauptverfasser: Keelan, Jeffrey A, Mattes, Eugen, Tan, HaiWei, Dinan, Andrew, Newnham, John P, Whitehouse, Andrew J O, Jacoby, Peter, Hickey, Martha
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container_title PloS one
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Mattes, Eugen
Tan, HaiWei
Dinan, Andrew
Newnham, John P
Whitehouse, Andrew J O
Jacoby, Peter
Hickey, Martha
description The aim of this study was to measure umbilical blood androgen concentrations in a birth cohort using a highly specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay and assesses the effects of sex, labor, and gestational age on fetal androgen levels at birth. We performed a prospective cohort study of androgen concentrations in mixed arterial and venous umbilical cord serum from 803 unselected singleton pregnancies from a general obstetric population in Western Australia. Total testosterone (TT), Δ4-androstenedione, and dehydroepiandrosterone were extracted from archived cord serum samples and measured using LC-MS/MS. SHBG was measured by ELISA; free testosterone (FT) and bioavailable testosterone (BioT) values were also calculated. Median values for all three androgens were generally lower than previously published values. Levels of TT, FT, BioT, and SHBG were significantly higher in male verses female neonates (P
doi_str_mv 10.1371/journal.pone.0042827
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We performed a prospective cohort study of androgen concentrations in mixed arterial and venous umbilical cord serum from 803 unselected singleton pregnancies from a general obstetric population in Western Australia. Total testosterone (TT), Δ4-androstenedione, and dehydroepiandrosterone were extracted from archived cord serum samples and measured using LC-MS/MS. SHBG was measured by ELISA; free testosterone (FT) and bioavailable testosterone (BioT) values were also calculated. Median values for all three androgens were generally lower than previously published values. Levels of TT, FT, BioT, and SHBG were significantly higher in male verses female neonates (P&lt;0.0001), while dehydroepiandrosterone levels were higher in females (P&lt;0.0001). Labor was associated with a significant (∼15-26%) decrease in median cord blood TT and FT levels (both sexes combined), but a modest (∼16-31%) increase in SHBG, Δ4-androstenedione, and dehydroepiandrosterone concentrations. TT and FT were significantly negatively correlated with gestational age at delivery, while SHBG, Δ4-androstenedione, and dehydroepiandrosterone were positively correlated. Antenatal glucocorticoid administration also had a significant effect in the multiple regression models. This is the first study to report umbilical cord androgen levels in a large unselected population of neonates using LC-MS/MS. Our findings suggest that previous studies have over-estimated cord androgen levels, and that fetal, maternal, and obstetric factors influence cord androgen levels differentially. 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We performed a prospective cohort study of androgen concentrations in mixed arterial and venous umbilical cord serum from 803 unselected singleton pregnancies from a general obstetric population in Western Australia. Total testosterone (TT), Δ4-androstenedione, and dehydroepiandrosterone were extracted from archived cord serum samples and measured using LC-MS/MS. SHBG was measured by ELISA; free testosterone (FT) and bioavailable testosterone (BioT) values were also calculated. Median values for all three androgens were generally lower than previously published values. Levels of TT, FT, BioT, and SHBG were significantly higher in male verses female neonates (P&lt;0.0001), while dehydroepiandrosterone levels were higher in females (P&lt;0.0001). Labor was associated with a significant (∼15-26%) decrease in median cord blood TT and FT levels (both sexes combined), but a modest (∼16-31%) increase in SHBG, Δ4-androstenedione, and dehydroepiandrosterone concentrations. TT and FT were significantly negatively correlated with gestational age at delivery, while SHBG, Δ4-androstenedione, and dehydroepiandrosterone were positively correlated. Antenatal glucocorticoid administration also had a significant effect in the multiple regression models. This is the first study to report umbilical cord androgen levels in a large unselected population of neonates using LC-MS/MS. Our findings suggest that previous studies have over-estimated cord androgen levels, and that fetal, maternal, and obstetric factors influence cord androgen levels differentially. 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concentrations in umbilical cord blood and their association with maternal, fetal and obstetric factors</title><author>Keelan, Jeffrey A ; Mattes, Eugen ; Tan, HaiWei ; Dinan, Andrew ; Newnham, John P ; Whitehouse, Andrew J O ; Jacoby, Peter ; Hickey, Martha</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-d5a7f4a6a9649482c67a10319f5dd5b366a59a1a8583bd73c87f83697daaef713</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Accuracy</topic><topic>Adult</topic><topic>Age</topic><topic>Androgens</topic><topic>Androgens - blood</topic><topic>Androstenedione</topic><topic>Bioavailability</topic><topic>Biomarkers</topic><topic>Blood</topic><topic>Cancer</topic><topic>Childbirth &amp; labor</topic><topic>Childrens health</topic><topic>Chromatography</topic><topic>Chromatography, Liquid</topic><topic>Cord blood</topic><topic>Dehydroepiandrosterone</topic><topic>Enzyme-Linked 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One</addtitle><date>2012-08-20</date><risdate>2012</risdate><volume>7</volume><issue>8</issue><spage>e42827</spage><epage>e42827</epage><pages>e42827-e42827</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>The aim of this study was to measure umbilical blood androgen concentrations in a birth cohort using a highly specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay and assesses the effects of sex, labor, and gestational age on fetal androgen levels at birth. We performed a prospective cohort study of androgen concentrations in mixed arterial and venous umbilical cord serum from 803 unselected singleton pregnancies from a general obstetric population in Western Australia. Total testosterone (TT), Δ4-androstenedione, and dehydroepiandrosterone were extracted from archived cord serum samples and measured using LC-MS/MS. SHBG was measured by ELISA; free testosterone (FT) and bioavailable testosterone (BioT) values were also calculated. Median values for all three androgens were generally lower than previously published values. Levels of TT, FT, BioT, and SHBG were significantly higher in male verses female neonates (P&lt;0.0001), while dehydroepiandrosterone levels were higher in females (P&lt;0.0001). Labor was associated with a significant (∼15-26%) decrease in median cord blood TT and FT levels (both sexes combined), but a modest (∼16-31%) increase in SHBG, Δ4-androstenedione, and dehydroepiandrosterone concentrations. TT and FT were significantly negatively correlated with gestational age at delivery, while SHBG, Δ4-androstenedione, and dehydroepiandrosterone were positively correlated. Antenatal glucocorticoid administration also had a significant effect in the multiple regression models. This is the first study to report umbilical cord androgen levels in a large unselected population of neonates using LC-MS/MS. Our findings suggest that previous studies have over-estimated cord androgen levels, and that fetal, maternal, and obstetric factors influence cord androgen levels differentially. Caution should be exercised when interpreting previously-published data that have not taken all of these factors into account.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>22916165</pmid><doi>10.1371/journal.pone.0042827</doi><tpages>e42827</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; DOAJ Directory of Open Access Journals; Public Library of Science (PLoS); EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry
subjects Accuracy
Adult
Age
Androgens
Androgens - blood
Androstenedione
Bioavailability
Biomarkers
Blood
Cancer
Childbirth & labor
Childrens health
Chromatography
Chromatography, Liquid
Cord blood
Dehydroepiandrosterone
Enzyme-Linked Immunosorbent Assay
Ethnicity
Family medical history
Female
Females
Fetal Blood - metabolism
Fetus - metabolism
Fetuses
Gestational age
Glucocorticoids
Hormones
Humans
Infant, Newborn
Labor
Liquid chromatography
Male
Mass spectrometry
Mass spectroscopy
Medical research
Medicine
Multiple regression models
Neonates
Obstetrics
Placenta
Pregnancy
Prospective Studies
Regression analysis
Regression models
Scientific imaging
Studies
Tandem Mass Spectrometry
Testosterone
Ultrasonic imaging
Umbilical cord
Womens health
title Androgen concentrations in umbilical cord blood and their association with maternal, fetal and obstetric factors
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