Purification, characterization, and cloning of a bifunctional molybdoenzyme with hydratase and alcohol dehydrogenase activity

A bifunctional hydratase/alcohol dehydrogenase was isolated from the cyclohexanol degrading bacterium Alicycliphilus denitrificans DSMZ 14773. The enzyme catalyzes the addition of water to α,β-unsaturated carbonyl compounds and the subsequent alcohol oxidation. The purified enzyme showed three subunits in SDS gel, and the gene sequence revealed that this enzyme belongs to the molybdopterin binding oxidoreductase family containing molybdopterins, FAD, and iron-sulfur clusters

Esthétique de la Technique

International audienceAristote se posait déjà la question des rapports entre le beau, l'utile et le nécessaire : la beauté at -elle à voir avec la technique ? La technique est-elle forcément laide ? La beauté est-elle nécessairement inutile ? Il reprenait là le dialogue engagé à ce sujet dans le Grand Hippias de Platon. Socrate y pose tour à tour la plupart des questions qui agitent les théoriciens de l'art jusqu'à aujourd'hui : peut-on dire que « ce qui sied est plus beau que ce qui ne sied pas » ? Est-ce que « ce qui pour nous est beau [serait] ce qui éventuellement est utilisable »

Newborn behavior and risk of postnatal depression in the mother

The aim of this study was to assess which behavioral characteristics of the newborn infant are associated with an increased risk of postnatal depression (PND) in the mother. A total of 497 mothers from a prospective cohort study were recruited during the last trimester of pregnancy. Infants were evaluated at 3 days with the Brazelton Neonatal Behavioral Scale. Maternal PND was assessed at 6 weeks postpartum with the Edinburgh Postnatal Depression Scale. Behavioral characteristics of the infant predicted the occurrence of PND, independent of other risk factors for PND: The lower the infants' orientation performance, the higher the risk that the mother would present with PND 6 weeks after delivery. As orientation capacities play a key role in the interactional skills developed between mothers and their infants, an infant who is difficult to engage in interaction may contribute to the risk of PND

Eur Child Adolesc Psychiatry

Prenatal maternal depression is associated with developmental disorders in offspring. However, the specific effects of the intensity of prenatal depressive symptoms on infant behavior remain poorly explored. The aim of this work is to explore the links between early neonatal behavior and maternal prenatal depressive symptoms, independently from maternal pre- and postnatal anxiety and early postnatal maternal depressive symptoms. Five hundred and ninety-eight women and their newborns from the MATQUID cohort were prospectively evaluated during the 8th month of pregnancy (T1) and at day 3 postpartum (T2). We analyzed the independent associations between neonates’ behavior (Neonatal Behavioral Assessment Scale—NBAS) at T2 and the intensity of maternal prenatal depressive symptoms (CES-D), taking into account confounding factors including depressive symptoms at T2 and anxiety (T1 and T2). The presence of a major depressive episode (MDE) based on MINI at T1 was also studied, independently. Our results show a significant negative correlation between prenatal CES-D scores and NBAS scores on “habituation” (p = 0.0001), “orientation” (p = 0.015), “motor system” (p < 0.0001), “autonomic stability” (p < 0.0001) dimensions, independently of other variables, including pre/postnatal anxiety and postnatal depressive symptoms. A prenatal MDE was independently associated with lower scores on the “orientation” dimension (p = 0.005). This study reports a specific effect of prenatal depressive symptoms on newborn’s behavior. These results highlight the crucial necessity for antenatal screening and adjusted treatments of maternal depressive symptoms and not only of MDE. Particular attention must be paid to infants of mothers presenting prenatal depressive symptoms to provide them with early developmental care when necessary

A prospective longitudinal study of the impact of early postnatal vs. chronic maternal depressive symptoms on child development

Background Few studies of the effects of postnatal depression on child development have considered the chronicity of depressive symptoms. We investigated whether early postnatal depressive symptoms (PNDS) predicted child developmental outcome independently of later maternal depressive symptoms. Methods In a prospective, longitudinal study, mothers and children were followed-up from birth to 2 years; repeated measures of PNDS were made using the Edinburgh Postnatal Depression Scale (EPDS); child development was assessed using the Bayley Scales II. Multilevel modelling techniques were used to examine the association between 6 week PNDS, and child development, taking subsequent depressive symptoms into account. Results Children of mothers with 6 week PNDS were significantly more likely than children of non-symptomatic mothers to have poor cognitive outcome; however, this association was reduced to trend level when adjusted for later maternal depressive symptoms. Conclusion Effects of early PNDS on infant development may be partly explained by subsequent depressive symptoms