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Background: Many critically ill children can be fed orally at some point during their paediatric intensive care (PICU) stay, but reduced appetite and other factors may impact their intake. At home, oral feeding is usually delivered by parents, so involving parents more actively during mealtimes in the PICU may contribute to improved patient/family satisfaction. Aim: To assess the impact of a new "room service" initiative involving parents on mealtime quality and on both family and health care professional (HCP) satisfaction. Methods: A prospective, single‐centre, before‐and‐after intervention study was designed as part of a PICU quality‐of‐care improvement programme in 2013 to 2016. Two questionnaires assessing oral nutrition practices and family/HCP overall satisfaction were disseminated among the parents of critically ill children capable of oral feeding during their PICU admission and among the whole PICU HCP team (nurses, nurse assistants, and medical doctors). Categorical variables were compared using the chi‐square test, and Likert scales were compared between groups with the Mann‐Whitney‐Wilcoxon test. Results: the pre‐intervention surveys were completed by 97 of 130 (75%) HCPs and 52 families and the post‐intervention surveys by 74 of 130 (57%) HCPs and 54 families. After the intervention, a marked improvement was observed in the overall quality of meal service rating by both HCPs and families (medians and IQR: 5 (5‐7) to 7 (7, 8) and 6 (6‐8) to 8 (7‐9), respectively; P <.01) and also in parents' involvement; in children's, families', and HCP satisfaction; in meal‐dedicated facilities and equipment; and in perception that oral nutrition is an important aspect of PICU care. Conclusions: Implementation of an improved "room service" initiative in the PICU was feasible and improved the perceived quality of care and satisfaction around oral feeding. This family‐centred care initiative can be integrated in an overall quality improvement strategy. [ABSTRACT FROM AUTHOR]

A transition metal-free approach was developed for the direct difunctionalization of disubstituted alkynes and terminal alkenes with concomitant formation of C–SCF2PO(OEt)2 and C–Cl bonds. The BiCl3-mediated reaction offered access to high value-added functionalized scaffolds in a single operation under mild conditions. Extension to SCF2PO(OEt)2-containing alkynes was also studied. [ABSTRACT FROM AUTHOR]

Catechol-O-methyltransferase (COMT) is an important enzyme in the metabolism of dopamine and disturbance in dopamine function is proposed to be central to the pathogenesis of schizophrenia. Clinical epidemiological studies have indicated cannabis use to confer a 2-fold increase in risk for subsequent onset of psychosis, with adolescent-onset use conveying even higher risk. There is evidence that a high activity COMT polymorphism moderates the effects of adolescent exposure to cannabis on risk for adult psychosis. In this paper we compared the effect of chronic adolescent exposure to the cannabinoid WIN 55212 on sensorimotor gating, behaviours related to the negative symptoms of schizophrenia, anxiety- and stress-related behaviours, as well as ex-vivo brain dopamine and serotonin levels, in COMT KO vs. wild-type (WT) mice. Additionally, we examined the effect of pretreatment with the COMT inhibitor tolcapone on acute effects of this cannabinoid on sensorimotor gating in C57BL/6 mice. COMT KO mice were shown to be more vulnerable than WT to the disruptive effects of adolescent cannabinoid treatment on prepulse inhibition (PPI). Acute pharmacological inhibition of COMT in C57BL/6 mice also modified acute cannabinoid effects on startle reactivity, as well as PPI, indicating that chronic and acute loss of COMT can produce dissociable effects on the behavioural effects of cannabinoids. COMT KO mice also demonstrated differential effects of adolescent cannabinoid administration on sociability and anxiety-related behaviour, both confirming and extending earlier reports of COMT×cannabinoid effects on the expression of schizophrenia-related endophenotypes. [ABSTRACT FROM PUBLISHER]

Dysbindin-1 is implicated in several aspects of schizophrenia, including cognition and both glutamatergic and dopaminergic neurotransmission. Targeted knockout of dysbindin-1A (Dys-1A KO), the most abundant and widely expressed isoform in the brain, is associated with deficits in delay/interference-dependent working memory. Using an ethologically based approach, the following behavioural phenotypes were examined in Dys-1A KO mice: exploratory activity, social interaction, anxiety and problem-solving ability. Levels of monoamines and their metabolites were measured in striatum, hippocampus and prefrontal cortex using high-performance liquid chromatography with electrochemical detection. The ethogram of initial exploration in Dys-1A KO mice was characterised by increased rearing from a seated position; over subsequent habituation, stillness was decreased relative to wildtype. In a test of dyadic social interaction with an unfamiliar conspecific in a novel environment, female KO mice showed an increase in investigative social behaviours. Marble burying behaviour was unchanged. Using the puzzle-box test to measure general problem-solving performance, no effect of genotype was observed across nine trials of increasing complexity. Dys-1A KO demonstrated lower levels of 5-HT in ratio to its metabolite 5-HIAA in the prefrontal cortex. These studies elaborate the behavioural and neurochemical phenotype of Dys-1A KO mice, revealing subtle genotype-related differences in non-social and social exploratory behaviours and habituation of exploration in a novel environment, as well as changes in 5-HT activity in brain areas related to schizophrenia., (Copyright © 2020 Elsevier B.V. All rights reserved.)

In mice, terminal differentiation of subpopulations of interneurons occurs in late postnatal stages, paralleling the emergence of the adult cortical architecture. Here, we investigated the effects of altered initial cortical architecture on later interneuron development. We identified that a class of somatostatin (SOM)-expressing GABAergic interneurons undergoes terminal differentiation between 2nd and 3rd postnatal week in the mouse somatosensory barrel cortex and upregulates Reelin expression during neurite outgrowth. Our previous work demonstrated that transient expression (E15-P10) of serotonin uptake transporter (SERT) in thalamocortical projection neurons regulates barrel elaboration during cortical map establishment. We show here that in thalamic neuron SERT knockout mice, these SOM-expressing interneurons develop at the right time, reach correct positions and express correct neurochemical markers, but only 70% of the neurons remain in the adult barrel cortex. Moreover, those neurons that remain display altered dendritic patterning. Our data indicate that a precise architecture at the cortical destination is not essential for specifying late-developing interneuron identities, their cortical deposition, and spatial organization, but dictates their number and dendritic structure ultimately integrated into the cortex. Our study illuminates how disruption of temporal-specific SERT function and related key regulators during cortical map establishment can alter interneuron development trajectory that persists to adult central nervous system., (© The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

A transition metal-free approach was developed for the direct difunctionalization of disubstituted alkynes and terminal alkenes with concomitant formation of C-SCF2PO(OEt)2 and C-Cl bonds. The BiCl3-mediated reaction offered access to high value-added functionalized scaffolds in a single operation under mild conditions. Extension to SCF2PO(OEt)2-containing alkynes was also studied.

Efficient metal catalyzed C⁻H arylation of 8-alkyl-thiazolo[5,4- f ]-quinazolin-9-ones was explored for SAR studies. Application of this powerful chemical tool at the last stage of the synthesis of kinase inhibitors allowed the synthesis of arrays of molecules inspired by fragment-growing studies generated by molecular modeling calculations. Among the potentially active compounds designed through this strategy, FC162 ( 4c ) exhibits nanomolar IC 50 values against some kinases, and is the best candidate for the development as a DYRK kinase inhibitor.

Few studies have addressed likely gene × gene (ie, epistatic) interactions in mediating risk for schizophrenia. Using a preclinical genetic approach, we investigated whether simultaneous disruption of the risk factors Neuregulin-1 (NRG1) and Disrupted-in-schizophrenia 1 (DISC1) would produce a disease-relevant phenotypic profile different from that observed following disruption to either gene alone. NRG1 heterozygotes exhibited hyperactivity and disruption to prepulse inhibition, both reversed by antipsychotic treatment, and accompanied by reduced striatal dopamine D2 receptor protein expression, impaired social cognition, and altered glutamatergic synaptic protein expression in selected brain areas. Single gene DISC1 mutants demonstrated a disruption in social cognition and nest-building, altered brain 5-hydroxytryptamine levels and hippocampal ErbB4 expression, and decreased cortical expression of the schizophrenia-associated microRNA miR-29b. Co-disruption of DISC1 and NRG1, indicative of epistasis, evoked an impairment in sociability and enhanced self-grooming, accompanied by changes in hypothalamic oxytocin/vasopressin gene expression. The findings indicate specific behavioral correlates and underlying cellular pathways downstream of main effects of DNA variation in the schizophrenia-associated genes NRG1 and DISC1., (© The Author 2016. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center. All rights reserved. For permissions, please email: journals.permissions@oup.com.)

Enantiomerization of allylic trifluoromethyl sulfoxides occurs spontaneously at room temperature through the corresponding allylic trifluoromethanesulfenates via a [2,3]-sigmatropic rearrangement. Dynamic enantioselective high-performance liquid chromatography (HPLC) analysis revealed the stereodynamics of these sulfoxides ranging from chromatographic resolution to peak coalescence at temperatures between 5 and 53 °C. The rate constant of enantiomerization and activation parameters were determined and compared with Density Functional Theory (DFT) calculations., (© 2015 Wiley Periodicals, Inc.)

A paediatric intensive care unit is, by definition, a high-tech place where children with life-threatening conditions are cared for. There are considerable challenges for the young patient and their family as well as for the organisation of the care within the units.