Evidence map›Paper›PMID 27377060›Full record

ArticleBMC pregnancy and childbirth2016

Hormone concentrations throughout uncomplicated pregnancies: a longitudinal study.

Helena Schock, Anne Zeleniuch-Jacquotte, Eva Lundin, Kjell Grankvist, Hans-Åke Lakso, Annika Idahl, Matti Lehtinen, Heljä-Marja Surcel, Renée T Fortner

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
130citing papers in PubMed, 6 pooled it
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

130 citing papers in PubMed, 6 syntheses or guidelines pooled it, 233 citations in OpenAlex.

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  4. Guidelines for assessing maternal cardiovascular physiology during pregnancy and postpartum.American journal of physiology. Heart and circulatory physiology · 2024
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70 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 4 countries.

Helena SchockDivision of Cancer Epidemiology, German Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg, 69120, Germany. h.schock@dkfz.de.
Anne Zeleniuch-JacquotteDepartment of Population Health, New York University School of Medicine, New York, USA.
Eva LundinDepartment of Medical Biosciences, Umeå University, Umeå, Sweden.
Kjell GrankvistDepartment of Medical Biosciences, Umeå University, Umeå, Sweden.
Hans-Åke LaksoDepartment of Medical Biosciences, Umeå University, Umeå, Sweden.
Annika IdahlDepartment of Clinical Sciences, Obstetrics and Gynecology, Umeå University, Umeå, Sweden.
Matti LehtinenSchool of Public Health, University of Tampere, Tampere, Finland.
Heljä-Marja SurcelUnit of Sexual and Reproductive Health, National Institute for Health and Welfare, Oulu, Finland.
Renée T FortnerDivision of Cancer Epidemiology, German Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg, 69120, Germany.
Umeå University · SEGerman Cancer Research Center · DEFinnish Institute for Health and Welfare · FINew York University · USTampere University · FI

Funding

Hormone levels during pregnancy and maternal ovarian cancerR01CA120061 · NCI · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI LUKANOVA, ANNEKATRIN · 2006 to 2010
$2.0M
NCI NIH HHS R01 CA120061
6 · The paper itself

Abstract

backgroundEvidence suggests that the hormonal milieu of pregnancy is an important determinant of subsequent cancer and other chronic diseases in both the mother and the offspring. Many of the existing maternity and birth cohorts include specimens drawn only once during pregnancy. How well a single blood specimen collected during a pregnancy characterizes exposure to these hormones throughout gestation, and also in subsequent pregnancies, is not well understood.

methodsWe used serial serum samples from 71 pregnant women (25 primiparous, 25 multiparous, and 21 with two consecutive pregnancies) with natural, complication-free pregnancies and a healthy offspring at term who participated in a population-based screening trial for congenital infections in Finland between January 1st, 1988 and June 30, 1989 and provided a blood sample in each trimester.

resultsHormone levels were more strongly correlated between consecutive trimesters of a pregnancy than between the 1st and 3rd trimester (e.g., estradiol, rT1 vs. T2 = 0.51 and rT2 vs. T3 = 0.60, p < 0.01; rT1 vs. T3 = 0.32, p < 0.05). Concentrations of sRANKL remained stable throughout gestation, whereas estradiol, estrone, progesterone, testosterone, prolactin, and osteoprotegerin increased throughout pregnancy. First trimester hormone concentrations explained less of the variation in the third trimester on their own than second trimester hormone levels (e.g. estradiol R(2) T1  = 16 % and R(2) T2 = 42 %). Addition of maternal (e.g., smoking) and/or child characteristics (e.g., sex) improved the accuracy of the 3rd trimester estimates for some of the hormones.

conclusionsOne hormone measurement in early pregnancy, in conjunction with maternal and fetal characteristics, permits estimation of 3rd trimester hormone concentrations. Therefore, single hormone measurements available from maternity cohorts are suitable to quantify hormone exposure during pregnancy. To our knowledge, we provide the first data on correlations between hormone concentrations both across trimesters of a single pregnancy, as well as between two subsequent pregnancies.

Indexed as

AdolescentAdultEstradiolEstroneFemaleGestational AgeHormonesHumansLongitudinal StudiesOsteoprotegerinParityPregnancyPregnancy Trimester, FirstPregnancy TrimestersPregnancy Trimester, SecondPregnancy Trimester, ThirdEstradiolEstroneHormonesOsteoprotegerinProgesteroneProlactinRANK LigandTestosteroneLongitudinal studyOPGPregnancysRANKLSteroid hormones

Identifiers

PMID27377060
PMCPMC4932669
OpenAlexW2460523310

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.