010.2003.005); the Sophia Foundation for Medical Research (projects 301 and 393), the Dutch Ministry of Justice (WODC), and the participating universities. MG and AM performed statistical analysis. MG, SH, HS and WV drafted the manuscript

and designed the study and participated in discussing the results and Dolutegravir chemical structure revised the manuscript. All authors contributed to and commented on final draft and have approved the final manuscript. All authors declare that they have no conflicts of interests in connection with any aspect of the research. This research is part of the TRacking Adolescents’ Individual Lives Survey (TRAILS). Participating centers of TRAILS include various departments of the University Medical Center and University of Groningen, the Erasmus University Medical Center Rotterdam, the University of Utrecht, the Radboud Medical Center Nijmegen, and the Trimbos Institute, all in the Netherlands. Principal investigators Selleckchem Pictilisib are Prof. Dr. J. Ormel (University Medical Center Groningen)

and Prof. Dr. F.C. Verhulst (Erasmus University Medical Center). We are grateful to all adolescents, their parents and teachers who participated in this research and to everyone who worked on this project and made it possible. “
“Early brain development involves a complex cascade of events that can be influenced by prenatal environmental factors. These events can have downstream effects, influencing postnatal development and behavior (Barker, 1998 and Huizink et al., 2004). Cannabinoids readily cross the placental (Behnke and Eyler, 1993 and Little and VanBeveren, 1996) and blood brain barriers (Schou et al., 1977). Despite the known importance of the endocannabinoid

system in neurodevelopment (Harkany et al., 2007), there has been little research exploring the effects of prenatal cannabis use with later Cediranib (AZD2171) child behavior. Pregnant women who use cannabis often smoke tobacco. Thus examining the effects of gestational cannabis exposure is often challenging, as smoking during pregnancy can also influence neurodevelopment. In this study, we compared several groups (i.e. pregnant women who smoked tobacco only versus women who combined cannabis with tobacco use) to examine if intrauterine exposure to cannabis has an independent effect from intrauterine exposure to tobacco. We also took paternal cannabis use into account as a contrast. By comparing the strength of association between maternal exposure during pregnancy and child behavior, with paternal exposure to the same substance in the same period and child behavior, one may be able to discard non-intrauterine environmental causes (Smith, 2008). Based on prior literature reporting increased attention problems and delinquency in prenatal cannabis-exposed school-age children and adolescents (Fried et al.

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