Serotonin transporter polymorphism moderates effects of prenatal maternal anxiety on infant negative emotionality.

Background: Consistent with the fetal programming hypothesis, effects of maternal prenatal anxiety have been found to predict various measures of infant temperament in the early postnatal period. In recent years, a polymorphism in the serotonin transporter gene (5-HTTLPR) emerged as a moderator of diverse environmental influences on different outcomes, with individuals carrying the short allele being generally more vulnerable to adversity.

Methods: We tested whether the association between self-reported maternal anxiety at 20 weeks gestation (Brief Symptom Inventory) and mother-rated infant negative emotionality at 6 months after birth (Infant Behavior Questionnaire-Revised) would be moderated by the 5-HTTLPR in a large Dutch cohort sample (n = 1513).

Atherosclerosis and incident depression in late life.

Context: Depression is a prominent concern for older adults; therefore, it is important to identify causal mechanisms so that prevention and treatment strategies can be developed. The vascular depression hypothesis proposes that vascular factors precede the onset of depression in older adults. However, although cross-sectional associations have been established, owing to a lack of objective assessments and longitudinal data, the validity and temporal nature of this relationship is unclear.

The Generation R Study: design and cohort update 2010.

The Generation R Study is a population-based prospective cohort study from fetal life until young adulthood. The study is designed to identify early environmental and genetic causes of normal and abnormal growth, development and health during fetal life, childhood and adulthood. The study focuses on four primary areas of research: (1) growth and physical development; (2) behavioural and cognitive development; (3) diseases in childhood; and (4) health and healthcare for pregnant women and children.

Examining continuity of early expressive vocabulary development: the generation R study.

Purpose: The authors investigated continuity and discontinuity of vocabulary skills in a population-based cohort in the Netherlands.

Method: Mothers of 3,759 children completed the Dutch version of the MacArthur Short Form Vocabulary Checklist (Zink & Lejaegere, 2003) at 18 months and a Dutch translation of the Language Development Survey (Rescorla, 1989) at 30 months. At both ages, expressive vocabulary delay was defined as vocabulary scores <10th age- and gender-specific percentile.

Childhood adversity modifies the relationship between anxiety disorders and cortisol secretion.

Background: Internalizing psychiatric disorders and early childhood adversity have both been associated with altered basal cortisol secretion. The aim of the present study is to investigate if early childhood adversity modifies the relationship between anxiety and mood disorders and cortisol secretion.

Methods: A sample of 429 international adoptees was followed from childhood to adulthood.

Fetal growth retardation and risk of febrile seizures.

Objective: The goal was to examine the associations between fetal growth characteristics in different trimesters of pregnancy and the occurrence of febrile seizures in early childhood.

Methods: This study was embedded in a population-based, prospective, cohort study from early fetal life onward. Fetal growth characteristics (femur length, abdominal circumference, estimated fetal weight, head circumference, biparietal diameter, and transverse cerebellar diameter [TCD]) were measured with ultrasonography in the second and third trimesters of pregnancy.

Infant brain development and vulnerability to later internalizing difficulties: the Generation R study.

Objective: Although clinical studies have demonstrated smaller subcortical volumes in structures such as the amygdala, hippocampus, caudate nucleus, and thalamus in adults and adolescents with depressive disorders and anxiety, no study has assessed such structures in babies, long before the development of the disorders. This study examined whether the size of the "gangliothalamic ovoid" (encompassing the basal ganglia and thalamus) assessed during infancy is associated with increased internalizing problems in early childhood.

Method: Cranial ultrasounds were used to assess gangliothalamic ovoid diameter and ventricular volume at 6 weeks of postnatal age; moreover, head circumference was measured.

Grandparental anxiety and depression predict young children's internalizing and externalizing problems: the generation R study.

Background: Family history is a major risk factor for child problem behaviour, yet few studies have examined the association between grandparental psychiatric disorder and child problem behaviour. Results are inconsistent as to whether the effect of grandparental depression on child problem behaviour is independent of parental psychopathology.

Methods: Mothers and their children participated in an ethnically Dutch subcohort of a population-based prospective cohort in the Netherlands.

Attachment, depression, and cortisol: Deviant patterns in insecure-resistant and disorganized infants.

Both attachment insecurity and maternal depression are thought to affect infants' emotional and physiological regulation. In the current study, Strange Situation Procedure (SSP) attachment classifications, and cortisol stress reactivity and diurnal rhythm were assessed at 14 months in a prospective cohort study of 369 mother-infant dyads. Maternal lifetime depression was diagnosed prenatally using the Composite International Diagnostic Interview (CIDI).

FKBP5 and resistant attachment predict cortisol reactivity in infants: gene-environment interaction.

Quality of the parent-infant attachment relationship influences physiological stress regulation. Genetic factors also contribute to the stress regulatory HPA-axis. Quality of attachment as an index of the rearing environment (measured with the Strange Situation Procedure, SSP), and HPA-axis related SNPs (BclI, rs41423247; TthIIII, rs10052957; GR-9β, rs6198; N363S, rs6195; ER22/23EK, rs6189 and 6190; and FKBP5, rs1360780) were hypothesized to be related to cortisol reactivity in the stressful SSP.

Maternal thyroid function during early pregnancy and cognitive functioning in early childhood: the generation R study.

Context: Thyroid hormones are essential for neurodevelopment from early pregnancy onward. Yet population-based data on the association between maternal thyroid function in early pregnancy and children's cognitive development are sparse.

Objective: Our objective was to study associations of maternal hypothyroxinemia and of early pregnancy maternal TSH and free T(4)(FT(4)) levels across the entire range with cognitive functioning in early childhood.

Heart failure and incident late-life depression.

Objectives: To assess whether heart failure (HF) increases the risk of developing depression and whether the use of loop diuretics in persons with HF alters this risk.

Design: Population-based cohort study between 1993 and 2005.

Setting: Ommoord, a district of Rotterdam, the Netherlands.

Predicting survival and morbidity-free survival to very old age.

As life expectancy continually increases, it is imperative to identify determinants of survival to the extreme end of the lifespan and more importantly to identify factors that increase the chance of survival free of major morbidities. As such, the current study assessed 45 common disease factors as predictors of survival and morbidity-free survival to age 85 years. Within the Rotterdam Study, a population-based cohort, we evaluated morbidity-free participants who were able to attain age 85 within the study duration (n = 2,008).

National origin and behavioural problems of toddlers: the role of family risk factors and maternal immigration characteristics.

In many societies the prevalence of behavioural problems in school-aged children varies by national origin. We examined the association between national origin and behavioural problems in 1½-year-old children. Data on maternal national origin and the Child Behavior Checklist for toddlers (n = 4943) from a population-based cohort in the Netherlands were used.

Low autonomic arousal as vulnerability to externalising behaviour in infants with hostile mothers.

Maternal psychopathology and the child's autonomic nervous system functioning are risk factors for aggressive behaviour later in life. While research has shown that maternal psychopathology already affects young children, less is known about the association between autonomic functioning and aggressive behaviour in young children. In addition, maternal psychopathology and autonomic nervous system functioning may interact to determine the risk of aggressive behaviour.

Paroxysmal disorders in infancy and their risk factors in a population-based cohort: the Generation R Study.

Aim: To examine the incidence of paroxysmal epileptic and non-epileptic disorders and the associated prenatal and perinatal factors that might predict them in the first year of life in a population-based cohort.

Method: This study was embedded in the Generation R Study, a population-based prospective cohort study from early fetal life onwards. Information about the occurrence of paroxysmal events, defined as suddenly occurring episodes with an altered consciousness, altered behaviour, involuntary movements, altered muscle tone, and/or a changed breathing pattern, was collected by questionnaires at the ages of 2, 6, and 12 months.

Mother's educational level and fetal growth: the genesis of health inequalities.

Background: Women of low socio-economic status (SES) give birth to lighter babies. It is unknown from which moment during pregnancy socio-economic differences in fetal weight can be observed, whether low SES equally affects different fetal-growth components, or what the effect of low SES is after taking into account mediating factors.

Methods: In 3545 pregnant women participating in the Generation R Study, we studied the association of maternal educational level (high, mid-high, mid-low and low) as a measure of SES with fetal weight, head circumference, abdominal circumference and femur length.

A genome-wide screen for depression in two independent Dutch populations.

Background: Depression has a strong genetic component but candidate gene studies conducted to date have not shown consistent associations.

Methods: We conducted a genome-wide parametric and nonparametric linkage analysis in a large-scale family-based study including 115 individuals with depression who were identified based on the Hospital Anxiety Depression Scale, Center for Epidemiologic Studies Depression Rating Scale, or use of antidepressive medication. Further, we investigated the most promising chromosomal regions found in the genome-wide linkage analysis with an association analysis in 734 individuals in the family-based study and 2373 individuals in the population-based study.

A prospective study on intrauterine cannabis exposure and fetal blood flow.

Background: Cannabis is commonly used among pregnant women. It is unclear whether cannabis exposure causes hemodynamic modifications in the fetus, like tobacco does.

Aims: This study aims to ascertain fetal blood redistribution due to intrauterine cannabis exposure.

Retinal vascular calibers and risk of late-life depression: The Rotterdam Study.

Objectives: To test the "vascular depression" hypothesis, the authors investigated whether smaller retinal arteriolar or larger venular calibers, which are markers of cerebral microvascular disease, were associated with incident late-life depression.

Methods: The authors included 3,605 participants (age > or =55 years) from the population-based Rotterdam Study with no depression at baseline (1993-1995) and fundus photographs gradable for retinal vascular caliber measurements. The authors identified persons with incident depressive symptoms and syndromes using psychiatric interviews during follow-up visits and continuous monitoring.

Sequence variants at CHRNB3-CHRNA6 and CYP2A6 affect smoking behavior.

Smoking is a common risk factor for many diseases. We conducted genome-wide association meta-analyses for the number of cigarettes smoked per day (CPD) in smokers (n = 31,266) and smoking initiation (n = 46,481) using samples from the ENGAGE Consortium. In a second stage, we tested selected SNPs with in silico replication in the Tobacco and Genetics (TAG) and Glaxo Smith Kline (Ox-GSK) consortia cohorts (n = 45,691 smokers) and assessed some of those in a third sample of European ancestry (n = 9,040).

Associations of light and moderate maternal alcohol consumption with fetal growth characteristics in different periods of pregnancy: the Generation R Study.

Background: Excessive alcohol consumption during pregnancy has adverse effects on fetal growth and development. Less consistent associations have been shown for the associations of light-to-moderate maternal alcohol consumption during pregnancy with health outcomes in the offspring. Therefore, we examined the associations of light-to-moderate maternal alcohol consumption with various fetal growth characteristics measured in different periods of pregnancy.

A meta-analysis of four genome-wide association studies of survival to age 90 years or older: the Cohorts for Heart and Aging Research in Genomic Epidemiology Consortium.

Background: Genome-wide association studies (GWAS) may yield insights into longevity.

Methods: We performed a meta-analysis of GWAS in Caucasians from four prospective cohort studies: the Age, Gene/Environment Susceptibility-Reykjavik Study, the Cardiovascular Health Study, the Framingham Heart Study, and the Rotterdam Study participating in the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium. Longevity was defined as survival to age 90 years or older (n = 1,836); the comparison group comprised cohort members who died between the ages of 55 and 80 years (n = 1,955).

Glucocorticoid receptor gene polymorphisms do not affect growth in fetal and early postnatal life. The Generation R Study.

Background: Glucocorticoids have an important role in early growth and development. Glucocorticoid receptor gene polymorphisms have been identified that contribute to the variability in glucocorticoid sensitivity. We examined whether these glucocorticoid receptor gene polymorphisms are associated with growth in fetal and early postnatal life.