Pubmed du 14/03/15

Pubmed du jour

2015-03-14 12:03:50

1. Burket JA, Benson AD, Green TL, Rook JM, Lindsley CW, Jeffrey Conn P, Deutsch SI. {{Effects of VU0410120, a Novel GlyT1 Inhibitor, on Measures of Sociability, Cognition and Stereotypic Behaviors in a Mouse Model of Autism}}. {Prog Neuropsychopharmacol Biol Psychiatry};2015 (Mar 14)
The NMDA receptor is a highly regulated glutamate-gated cationic channel receptor that has an important role in the regulation of sociability and cognition. The genetically-inbred Balb/c mouse has altered endogenous tone of NMDA receptor-mediated neurotransmission and is a model of impaired sociability, relevant to Autism Spectrum Disorders (ASDs). Because glycine is an obligatory co-agonist that works cooperatively with glutamate to promote opening of the ion channel, one prominent strategy to promote NMDA receptor-mediated neurotransmission involves inhibition of the glycine type 1 transporter (GlyT1). The current study evaluated the dose-dependent effects of VU0410120, a selective, high-affinity competitive GlyT1 inhibitor, on measures of sociability, cognition and stereotypic behaviors in Balb/c and Swiss Webster mice. The data show that doses of VU0410120 (i.e., 18 and 30 mg/kg) that improve measures of sociability and spatial working memory in the Balb/c mouse strain elicit intense stereotypic behaviors in the Swiss Webster comparator strain (i.e., burrowing and jumping). Furthermore, the data suggest that selective GlyT1 inhibition improves sociability and spatial working memory at doses that do not worsen or elicit stereotypic behaviors in a social situation in the Balb/c strain. However, the elicitation of stereotypic behaviors in the Swiss Webster comparator strain at therapeutically relevant doses of VU0410120 suggest that genetic factors (i.e., mouse strain differences) influence sensitivity to GlyT1-elicited stereotypic behaviors, and emergence of intense stereotypic behaviors may be dose-limiting side effects of this interventional strategy.

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2. Rogers K, Zeni MB. {{Systematic Review of Medical Home Models to Promote Transitions to Primary Adult Health Care for Adolescents Living With Autism Spectrum Disorder}}. {Worldviews Evid Based Nurs};2015 (Mar 14)
BACKGROUND: There is a growing number of children diagnosed and living with autism spectrum disorders (ASDs) in the United States. This increasing incidence and prevalence of ASDs require care coordination within a medical home model, which needs to continue into adulthood. AIM: This paper is an evidence review of medical home models for transitioning adolescents living with ASDs from pediatric primary healthcare practices to adult primary care practices. METHOD: Databases were reviewed and articles selected based on inclusion and exclusion criteria. RESULTS: Nine articles were reviewed and four met criteria. None of the articles addressed medical home models to transition adolescents living with ASDs into adult primary healthcare services. LINKING EVIDENCE TO ACTION: There is a need for nursing to work within an interdisciplinary framework to educate adult healthcare providers on the needs of adolescents living with ASDs and to evaluate medical home transition models for this vulnerable population.

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