hrp0086fc10.4 | Perinatal Endocrinology | ESPE2016

In Utero and Postnatal Consequences of Psychological Maternal Stress have Different Effects On Longevity: Studies in World War 1 Orphans

Todd Nicolas , Valleron Alain-Jacques , Bougneres Pierre

Background: Early life stress (ELS) are known to have a deleterious impact on health, but their potential long-term consequences on mortality remain to be assessed. World War 1 (WW1) has caused major stress and bereavement to millions of European mothers.Objectives and hypotheses: To compare the effects of a maternal stress occurring during intra uterine or in postnatal life upon long-term mortality.Patients: Thanks to recently dig...

hrp0086p1-p224 | Diabetes P1 | ESPE2016

Space-time Environmental Associations in Childhood Type 1 Diabetes (T1D). A Case-control Geographical Approach in the ISIS-Diab Cohort

Bougneres Pierre , Le Fur Sophie , Valtat Sophie , Valleron Alain-Jacques , ISIS-Diab Network Network

Background: T1D concordance in MZ twins being ~40%, non-heritable factors play a major causal role in this autoimmune disease. T1D has recently increased in young European children. Collecting prospective environmental data in a cohort of millions children-years starting soon after birth seems unpracticable. Retrospective case-control studies are an alternative, provided biased controls and recall bias can both be avoided.Objectives: To develop a ‘v...

hrp0086p1-p254 | Diabetes P1 | ESPE2016

A Case-Control Search of Environmental (E) Factors for Childhood Type 1 Diabetes (T1D) Using Lifeline Questionnaires in the ISIS-Diab Cohort

Balazard Felix , Le Fur Sophie , Biau Gerard , Valleron Alain-Jacques , Bougneres Pierre

Background: The rapidly increasing T1D incidence in European children suggests the recent emergence or extension of predisposing E factors, or the decrease of protective E factors acting during pregnancy, infancy or early childhood. E research has preferentially focused on specific candidate factors, such as hygiene hypothesis, enteroviruses, alimentation, in cohort or case-control studies. The risk of bias is a major concern in E studies.Objectives: To ...

hrp0086p2-p266 | Diabetes P2 | ESPE2016

Gene-Environment (GxE) Interactions in Childhood Type 1 Diabetes (T1D): A Case-only Geographical Approach in the ISIS-Diab Cohort

Bougneres Pierre , Fur Sophie Le , Valtat Sophie , Lathrop Mark , Valleron Alain-Jacques , ISIS-Diab Network France

Background: T1D concordance in MZ twins being ~40%, non-heritable factors play a major causal role in this autoimmune disease. T1D has recently increased in young European children. Collecting prospective environmental data in a cohort of millions children-years starting soon after birth seems unpracticable. Retrospective case–control studies are an alternative, provided biased controls and recall bias can both be avoided.Objectives: To develop a &#...

hrp0086p1-p346 | Gonads & DSD P1 | ESPE2016

Using Public Databases, ‘Virtual Controls’ and Geolocalization to Search for Environmental Correlates of Hypospadias

Valleron Alain-Jacques , Esterle Laure , Mouriquand Pierre , Meurisse Sofia , Valtat Sophie , Urology Centers HYPOCRYPT Network , Bougneres Pierre

Background: Incidence of hypospadias varies considerably across countries, ranging from 4 to 43 cases per 10,000 births. Environmental factors might explain these differences. The classical approach is to use case-control studies to identify these factors. However, this approach suffers from the unavoidable arbitrariness of the definition of controls, and of recall bias.Objective and hypotheses: To identify environmental markers of the place of birth of ...