Publications by authors named "Marja Vaarasmaki"

Introduction: Nulliparous women beyond term have high rates of induction failure. The aim of this study was to compare delivery outcomes for balloon catheter, misoprostol, and combination of both in nulliparous late- and post-term women with unfavorable cervices. We intended to explore whether the combination strategy has lower cesarean section rate and is as safe as either method alone.

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  • Gestational diabetes mellitus (GDM) is identified through abnormal results in an oral glucose tolerance test (OGTT), with a lack of clear understanding about how the number of abnormal values relates to negative birth outcomes.
  • A study involving 4869 pregnant women in Finland analyzed the connection between the quantity of abnormal OGTT values and adverse perinatal and neonatal results, taking into account various health and social factors.
  • Results indicated that women with two or more abnormal OGTT values had significantly higher rates of negative perinatal (35.0% vs. 27.5%) and neonatal outcomes (31.1% vs. 18.9%) compared to those with fewer or no abnormal values.
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  • Genome-wide association studies have found numerous genetic loci linked to glycemic traits, but connecting these loci to specific genes and biological pathways remains a challenge.
  • Researchers conducted meta-analyses of exome-array studies across four glycemic traits, analyzing data from over 144,000 participants, which led to the identification of coding variant associations in more than 60 genes.
  • The study revealed significant pathways related to insulin secretion, zinc transport, and fatty acid metabolism, enhancing understanding of glycemic regulation and making data available for further research.
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  • Maternal gestational diabetes (GDM) is linked to increased risks for small (SGA) and large (LGA) for gestational age babies, which can complicate health for both mothers and infants.
  • The study analyzed data from over 23,000 pregnant women, comparing those with GDM to a control group without GDM, looking at levels of specific proteins to assess risks for SGA and LGA.
  • Results showed that while lower levels of pregnancy-associated proteins were associated with higher odds of SGA, high levels weren't connected to LGA outcomes, indicating different risk factors may be at play for these conditions in GDM pregnancies.
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Currently, there are no accurate means to predict spontaneous preterm birth (SPTB). Recently, we observed low expression of alpha-1 antitrypsin (AAT) in SPTB placentas. Present aim was to compare the concentrations of maternal serum AAT in pregnancies with preterm and term deliveries.

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Background: Mild hyperglycaemia is associated with increased birth weight but association with other neonatal outcomes is controversial. We aimed to study neonatal outcomes in untreated mild hyperglycaemia using different oral glucose tolerance test (OGTT) thresholds.

Methods: This register-based study included all (n = 4,939) singleton pregnant women participating a 75 g 2-h OGTT in six delivery hospitals in Finland in 2009.

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Higher birth order is associated with altered risk of many disease states. Changes in placentation and exposures to in utero growth factors with successive pregnancies may impact later life disease risk via persistent DNA methylation alterations. We investigated birth order with Illumina DNA methylation array data in each of 16 birth cohorts (8164 newborns) with European, African, and Latino ancestries from the Pregnancy and Childhood Epigenetics Consortium.

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Introduction: Neonatal and maternal risks increase in term pregnancy as gestational age advances and become increasingly evident post-term. Management practices of late- and post-term pregnancies vary, and the optimal time point for intervention by labor induction is yet to be determined.

Material And Methods: This randomized controlled trial of 381 nulliparous women with unripe cervices compared labor induction at 41 gestational weeks (early induction) with expectant management and labor induction at 41 to 42 gestational weeks (expectant management).

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  • * A meta-analysis of 37 studies revealed that higher MEA is linked to different DNA methylation patterns in offspring at birth, childhood, and adolescence, with significant findings at 473 specific sites associated with maternal factors like smoking and nutrition.
  • * The research underscores the connection between socio-economic status and biological processes, enhancing our understanding of how maternal education impacts health through genetic mechanisms and emphasizing the role of social determinants in health disparities.
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Objective: We compared cognitive profile and neuropsychological performance in 9-year-old offspring of mothers who were treated with metformin or insulin for gestational diabetes mellitus (GDM).

Methods: A total of 172 children whose mothers were randomly assigned to receive either metformin or insulin for GDM were studied at the age of 9 years. Of these children, 127 were from Turku, Finland (63 metformin and 64 insulin), and 45 from Oulu, Finland (19 metformin and 26 insulin).

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  • A healthy placenta is crucial for both the mother and fetus during pregnancy, and this study uses placental weight as a measure of its growth.
  • Genome-wide analyses across the genomes of mothers, fathers, and fetuses identified 40 genetic signals related to placental weight, revealing a mix of influences from both parents and the fetus.
  • The findings suggest that higher placental weight, driven by fetal genetics, is linked to an increased risk of preeclampsia and shorter pregnancy duration, highlighting the role of fetal insulin in regulating placental growth.
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Background: Gestational diabetes mellitus (GDM) is a common pregnancy-related disorder and a well-known risk factor for adverse pregnancy outcomes. There are conflicting findings on the association of GDM with the risk of congenital anomalies (CAs) in offspring. In this study, we aimed to determine study whether maternal GDM is associated with an increased risk of major CAs in offspring.

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Ceramides contribute to the development of type 2 diabetes but it is uncertain whether they predict gestational diabetes (GDM). In this multicentre case-control study including 1040 women with GDM and 958 non-diabetic controls, early pregnancy (mean 10.7 gestational weeks) concentrations of four ceramides-Cer(d18:1/16:0), Cer(d18:1/18:0), Cer(d18:1/24:0) and Cer(d18:1/24:1)-were determined by a validated mass-spectrometric method from biobanked serum samples.

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Aims: To compare body composition, visceral adiposity, adipocytokines, and low-grade inflammation markers in prepubertal offspring of mothers who were treated with metformin or insulin for gestational diabetes mellitus (GDM).

Methods: 172 offspring of 311 mothers randomized to receive metformin (n = 82) or insulin (n = 90) for GDMwere studied at 9 years of age (follow-up rate 55%). Measurements included anthropometrics, adipocytokines, markers of the low-grade inflammation, abdominal magnetic resonance imaging (MRI), magnetic liver spectrometry (MRS), and whole body dual-energy X-ray absorptiometry (DXA).

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Aims: We studied whether androgen excess and low sex hormone-binding globulin (SHBG) measured in early pregnancy are independently associated with fasting and post-prandial hyperglycaemia, gestational diabetes (GDM), and its severity.

Materials And Methods: This nationwide case-control study included 1045 women with GDM and 963 non-diabetic pregnant controls. We measured testosterone (T) and SHBG from biobanked serum samples (mean 10.

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Objectives: To study sexually transmitted Chlamydia trachomatis infections (STCTs), teenage pregnancies, and payment defaults in individuals born preterm as proxies for engaging in risk-taking behavior.

Study Design: Our population-based register-linkage study included all 191 705 children alive at 10 years (8492 preterm [4.4%]) born without malformations in Finland between January 1987 and September 1990 as each mother's first child within the cohort.

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Objectives: To evaluate different cut-off values of first trimester pregnancy associated plasma protein-A (PAPP-A) in screening for adverse pregnancy outcomes in a retrospective cohort study.

Methods: During the study period of 1.1.

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(1) Hyperglycemia and oral pathology accelerate each other in diabetes. We evaluated whether gestational diabetes mellitus (GDM) is associated with self-reported increased oral health care needs and oral symptoms, including third molar symptoms, during pregnancy. (2) Pregnant women with ( = 1030) and without GDM ( = 935) were recruited in this multicenter Finnish Gestational Diabetes study in 2009-2012.

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Introduction: Thyroid diseases in pregnancy are relatively common and are associated with adverse pregnancy and perinatal outcomes, increasing a neonate's risk of admission to the neonatal intensive care unit (NICU). The aim of this study was to evaluate the indications for increased risk of NICU admission among the neonates of hypothyroid and hyperthyroid mothers.

Material And Methods: The study data consisted of all singleton deliveries (n = 734 773) between 2004 and 2016 in Finland collected from the Finnish Medical Birth Register.

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Introduction: The use of paracetamol for pain relief in pregnancy is common. However, the influence of paracetamol on the perinatal adaptation of high-risk infants has not been studied. These data are important for safety, since another inhibitor of prostaglandin synthesis is harmful to infants born very preterm and increases serious morbidity.

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Introduction: The main aim was to study whether the long-term incidences of type 2 diabetes, pre-diabetes and metabolic syndrome differed between women who were treated with metformin or insulin for gestational diabetes.

Material And Methods: This 9-year follow-up study of two open-label randomized trials compares metformin and insulin treatments of gestational diabetes. In all, 165 women, 88 previously treated with insulin and 77 treated with metformin in the index pregnancy, were included in the analyses.

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Gestational diabetes mellitus (GDM) is associated with increased risk of pregnancy complications and adverse perinatal outcomes. GDM often reoccurs and is associated with increased risk of subsequent diagnosis of type 2 diabetes (T2D). To improve our understanding of the aetiological factors and molecular processes driving the occurrence of GDM, including the extent to which these overlap with T2D pathophysiology, the GENetics of Diabetes In Pregnancy Consortium assembled genome-wide association studies of diverse ancestry in a total of 5485 women with GDM and 347 856 without GDM.

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The current epidemics of cardiovascular and metabolic noncommunicable diseases have emerged alongside dramatic modifications in lifestyle and living environments. These correspond to changes in our "modern" postwar societies globally characterized by rural-to-urban migration, modernization of agricultural practices, and transportation, climate change, and aging. Evidence suggests that these changes are related to each other, although the social and biological mechanisms as well as their interactions have yet to be uncovered.

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Objective: Maternal glycemic dysregulation during pregnancy increases the risk of adverse health outcomes in her offspring, a risk thought to be linearly related to maternal hyperglycemia. It is hypothesized that changes in offspring DNA methylation (DNAm) underline these associations.

Research Design And Methods: To address this hypothesis, we conducted fixed-effects meta-analyses of epigenome-wide association study (EWAS) results from eight birth cohorts investigating relationships between cord blood DNAm and fetal exposure to maternal glucose (Nmaximum = 3,503), insulin (Nmaximum = 2,062), and area under the curve of glucose (AUCgluc) following oral glucose tolerance tests (Nmaximum = 1,505).

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