A multimodal neuroimaging study of youth at risk for substance use disorders: Functional magnetic resonance imaging and [F]fallypride positron emission tomography.

Background: Adolescent alcohol use is the norm, but only some develop a substance use disorder. The increased risk might reflect heightened mesocorticolimbic responses to reward-related cues but results published to date have been inconsistent.

Methods: Young social drinkers (age 18.

Prenatal Hemoglobin Concentration and Long-Term Child Neurocognitive Development.

Anemia in pregnancy, defined by a hemoglobin level (Hb) of less than 110 g/L, contributes to infant mortality and morbidity in sub-Saharan Africa. Maternal Hb changes physiologically and pathologically during pregnancy. However, the impact of these changes on long-term child neurocognitive function is unknown.

Understanding Early Risk Factors of Preschool Disruptive Behaviors in a Population-Based Birth Cohort: Why Does Comorbidity Matter?

Background/objectives: Research on early risk factors for disruptive behaviors (DBs: hyperactivity-impulsivity/HI, non-compliance/NC, or physical aggression/PA) has predominantly focused on individual DBs in silos (i.e., HI, NC, PA) or the broader category of externalizing, reporting mostly common risk factors among them.

Oral citrulline supplementation in pregnancies with preeclampsia: a multicenter, randomized, double-blind clinical trial.

Background: Preeclampsia (PE) contributes to maternal and fetal mortality and morbidity. Supplementation with L-arginine, the precursor of nitric oxide, has not proven effective, possibly due to extensive arginine catabolism in the splanchnic bed. Citrulline is converted by the kidney to L-arginine.

Correction: A sequential model of the contribution of preschool fluid and crystallized cognitive abilities to later school achievement.

[This corrects the article DOI: 10.1371/journal.pone.