Developing an effective and simple digital screening tool to identify inadequate calcium intake in pregnant women: A prediction model in the Rotterdam periconception cohort.

Objectives: An inadequate intake of calcium in pregnancy is associated with higher risks of maternal hypertensive pregnancy disorders, premature birth and intrauterine growth restriction. An evidence based and clinically applicable tool to efficiently estimate the adequacy of calcium intake in pregnant women currently does not exist. The aim of this study is to develop an effective and simple digital screening tool for calcium intake in pregnancy.

Periconceptional maternal intake of ultra-processed foods, energy and macronutrients the impact on imaging markers of early utero-placental vascular development: The rotterdam periconception cohort.

Background & Aims: The quantity and quality of maternal nutrition in the periconception period is an important determinant for embryonic and foetal development and subsequent pregnancy course and outcome. The intake of ultra-processed foods (UPF) has increased worldwide and adverse health outcomes have been reported. However, the impact of UPF intake on the placenta, essential for prenatal nourishment, is unknown.

Periconceptional maternal and paternal alcohol consumption and embryonic and fetal development: the Rotterdam periconception cohort.

Research Question: What is the impact of maternal and paternal alcohol consumption in the periconception period on embryonic and fetal development assessed using three-dimensional ultrasound and virtual reality techniques?

Design: This prospective observational study was embedded in the Rotterdam periconception cohort (Predict study). Participating women received longitudinal three-dimensional transvaginal ultrasound examinations from week 7 to week 12 of gestation to measure crown-rump length and embryonic volume. Mid-pregnancy fetal size parameters and birth weight were retrieved from medical files.

Periconceptional Non-medical Maternal Determinants Influence the Tryptophan Metabolism: The Rotterdam Periconceptional Cohort (Predict Study).

Background: The vital role of the maternal tryptophan (TRP) metabolism in maternal health and pregnancy is well established. However, non-medical maternal determinants influencing the TRP metabolism have been poorly investigated. We hypothesise that periconceptional maternal non-medical determinants alter the TRP metabolism, affecting both kynurenine (KP) and serotonin pathway (SP) metabolite concentrations.

The intake of ultra-processed foods and homocysteine levels in women with(out) overweight and obesity: The Rotterdam Periconceptional Cohort.

Purpose: Today's diet consists of a substantial proportion of ultra-processed foods (UPF), especially in women with overweight and obesity in the reproductive period. High UPF intake results in an inadequate and unbalanced diet leading to derangements of several metabolic pathways detrimental to pregnancy and birth outcomes. Therefore, we aim to investigate whether UPF intake in the periconceptional period affects total homocysteine plasma levels (tHcy).

Reported experienced stress during the COVID-19 pandemic and patient preferences for the consultation of periconception blended lifestyle care: a survey among (pre)pregnant women.

Purpose: To assess experienced stress on different aspects of life and evaluate patient preferences for the consultation of periconception blended lifestyle care, combining face-to-face counseling with eHealth, during the COVID-19 pandemic among (pre)pregnant women. Using this two-fold aim, we were able to analyze the levels of stress among (pre)pregnant women during the COVID-19 pandemic, and to study whether their preferences for the consultation modality of periconception blended lifestyle care was influenced by the levels of stress.

Methods: A quantitative survey among (pre)pregnant women who received blended periconception lifestyle care between March 2020 and December 2021, from the first until the fourth COVID-19 wave in the Netherlands.

The Effect of an eHealth Coaching Program (Smarter Pregnancy) on Attitudes and Practices Toward Periconception Lifestyle Behaviors in Women Attempting Pregnancy: Prospective Study.

Background: Lifestyle behaviors during the periconception period contribute to achievement of a successful pregnancy. Assessment of attitudes and practices toward these modifiable behaviors can aid in identifying gaps in unhealthy lifestyle behaviors with impact on intervention effectiveness.

Objective: This study investigates the effectiveness of coaching by the eHealth program Smarter Pregnancy during the periconception period on improvement of attitudes and practices toward fruit and vegetable intake and smoking in women attempting pregnancy through assisted reproductive technology (ART) or natural conception.

Prototyping of a Digital Life Course Care Platform for Preconception and Pregnancy Care: Pilot Feasibility and Acceptability Study.

Background: A healthy lifestyle plays a key role in the prevention of lifestyle-related diseases, including subfertility and pregnancy complications. Although the benefits of a healthy lifestyle are well-known, long-term adherence is limited. Moreover, memory for lifestyle-related information as well as medical information provided by the medical professional is often poor and insufficient.

Periconceptional Maternal Protein Intake from Animal and Plant Sources and the Impact on Early and Late Prenatal Growth and Birthweight: The Rotterdam Periconceptional Cohort.

Plant-based diets continue to rise in popularity, including among women of reproductive age, while consequences for pregnancy outcomes have hardly been studied. During pregnancy, maternal diet is the only source of proteins for the developing fetus. Hence, we investigated the effects of periconceptional maternal animal and plant protein intake on prenatal growth and birthweight.

Implementation of effective blended periconception lifestyle care in a tertiary hospital in the Netherlands: a cross-sectional study on determinants and patient satisfaction.

Objective: To identify implementation determinants of blended periconception lifestyle care, and to evaluate patient satisfaction.

Design: Cross-sectional study.

Setting: The outpatient clinic of the department of Obstetrics and Gynaecology of the Erasmus MC.

The Role of the Kynurenine Pathway in the (Patho) physiology of Maternal Pregnancy and Fetal Outcomes: A Systematic Review.

Introduction: Tryptophan is the precursor of kynurenine pathway (KP) metabolites which regulate immune tolerance, energy metabolism, and vascular tone. Since these processes are important during pregnancy, changes in KP metabolite concentrations may play a role in the pathophysiology of pregnancy complications. We hypothesize that KP metabolites can serve as novel biomarkers and preventive therapeutic targets.

Simultaneous quantification of tryptophan metabolites by liquid chromatography tandem mass spectrometry during early human pregnancy.

Objectives: In this study we describe the development and validation of a liquid chromatography mass spectrometry method (LC-MS/MS) to quantify five tryptophan (TRP) metabolites within the kynurenine- and serotonin pathway and apply the method to serum samples of women in the first trimester of pregnancy. A secondary aim was to investigate the correlation between body mass index (BMI) and the five analytes.

Methods: A LC-MS/MS was developed for the analysis of TRP, kynurenine (KYN), 5-hydroxytryptophan (5-HTP), hydroxytryptamine (5-HT), and 5-hydroxyindole acetic acid (5-HIAA).

Lifestyle care for transformation of medical care using an early life course approach.

It is well known that a healthy lifestyle plays a key role in maintaining reproductive and general health, and preventing lifestyle-related diseases throughout the entire life course. Lifelong health is shaped during the preconception period and the first 1000 days of life. The importance of a healthy lifestyle during these periods can be emphasized by introducing the concept of the early life course, which covers from 100 days before conception until 1000 days thereafter.

A high periconceptional maternal ultra-processed food consumption impairs embryonic growth: The Rotterdam periconceptional cohort.

Background & Aims: Periconceptional maternal dietary patterns contribute to embryonic growth and development. No knowledge is available about the impact of periconceptional maternal ultra-processed food consumption on embryonic growth. Therefore, the aim of the present study is to investigate the impact of periconceptional maternal ultra-processed food consumption on embryonic growth using repeated crown-rump length (CRL) and embryonic volume (EV) measurements.

Periconceptional maternal social, lifestyle and medical risk factors impair embryonic growth: The Rotterdam Periconceptional Cohort.

Research Question: What is the association between the degree of a state of maternal vulnerability, determined by suboptimal periconceptional social, lifestyle and medical exposures and embryonic growth?

Design: In total, 555 pregnancies, comprising 324 naturally conceived pregnancies and 231 pregnancies conceived after IVF and intracytoplasmic sperm injection (ICSI) were included from the Rotterdam Periconceptional Cohort (Predict Study) between November 2010 and August 2018. Data on periconceptional social, lifestyle and medical exposures, i.e.

Effective psychological therapies to improve lifestyle behaviors in (pre)pregnant women: A systematic review.

Poor lifestyle behaviors impact (pre)pregnant women by affecting pregnancy outcomes and offspring health. This systematic review provides an overview of psychological therapies to support lifestyle behavior changes among (pre)pregnant women. Scientific databases were searched from their inception to 20 December 2020 for studies investigating the effects of psychological therapies on improvements in lifestyle behaviors.

Corpus luteum number and the maternal renin-angiotensin-aldosterone system as determinants of utero-placental (vascular) development: the Rotterdam Periconceptional Cohort.

Background: Pregnancies with > 1 corpus luteum (CL) display a hyperdynamic circulation and an increased risk of small-for-gestational age deliveries. Among the factors released by the CL is prorenin, the inactive precursor of renin. Since the renin-angiotensin-aldosterone system (RAAS) is involved in early hemodynamic pregnancy adaptation, we linked both CL number and first-trimester concentrations of prorenin (as an indicator of RAAS activity) and the aldosterone/renin ratio (as an indicator of angiotensin-independent aldosterone effectiveness) to non-invasive markers of utero-placental (vascular) development, measured longitudinally from the first trimester onwards.

A prospective population-based multicentre study on the impact of maternal body mass index on adverse pregnancy outcomes: Focus on normal weight.

Background: Maternal body mass index (BMI) below or above the reference interval (18.5-24.9 kg/m2) is associated with adverse pregnancy outcomes.

Optimizing the Periconception Lifestyle of Women With Overweight Using a Blended Personalized Care Intervention Combining eHealth and Face-to-face Counseling (eFUSE): Protocol for a Randomized Controlled Trial.

Background: Maternal overweight has a substantial impact on reproductive, maternal, pregnancy, and neonatal outcomes with long-term and transgenerational health consequences. Interventions that aim to optimize periconception maternal lifestyle can improve maternal and fetal health during pregnancy and throughout the life course. However, it remains difficult to change and adopt adequate lifestyle behaviors.