White Matter Tract-Cognitive Relationships in Children with High-Functioning Autism Spectrum Disorder

OBJECTIVE: The purpose of the present study was to clarify the relationship between white matter tracts and cognitive symptoms in children with high-functioning autism spectrum disorder (ASD). METHODS: We examined the cognitive functions of 17 children with high-functioning ASD and 18 typically developing (TD) controls and performed diffusion tensor imaging (DTI) tractography. We compared the results between the groups and investigated the correlations between the cognitive scores and DTI parameters within each group. RESULTS: The Comprehension scores in the ASD group exhibited a positive correlation with mean diffusivity (MD) in the forceps minor (F minor). In the TD group, the Comprehension scores were positively correlated with fractional anisotropy (FA) in the right inferior fronto-occipital fasciculus (IFO) and left anterior thalamic radiation (ATR), and negatively correlated with MD in the left ATR, radial diffusivity (RD) in the right IFO, and RD in the left ATR. Additionally, a positive correlation was observed between the Matching Numbers scores and MD in the left uncinate fasciculus and F minor, and RD in the F minor. Furthermore, the Sentence Questions scores exhibited a positive correlation with RD in the right inferior longitudinal fasciculus. Relative to TD controls, the specific tract showing a strong correlation with the cognitive scores was reduced in the ASD group. CONCLUSION: Our findings indicate that white matter tracts connecting specific brain areas may exhibit a weaker relationship with cognitive functions in children with ASD, resulting in less efficient cognitive pathways than those observed in TD children.

Usefulness of Hospital Formulary and Required Drug Information as a Drug Therapy Reference for Medical Students during Clinical Training / 医薬品情報学

<b>Objective: </b>A hospital Formulary (HF) is useful not only for providing a list of formulary drugs, but also for drug safety management and clinical practice in hospitals.  Our Pharmacy Division serves as a clinical training facility for the Faculty of Medicine and offers a bedside learning (BSL) program that allows students to participate in medical services.  Providing medical students with a requisite understanding of pharmacotherapy in order to effectively provide medical services is the goal of the core curriculum of medical education and HF use in BSL may be effective in achieving this goal.  We conducted a survey in order to examine the usefulness of an HF for medical students during clinical training and to determine what drug information is required by students.<br><b>Methods: </b>Between April 2012 and March 2013, a questionnaire survey was conducted on 88 fifth-year medical students    who participated in a 1-day BSL program using an HF.<br><b>Results: </b>The response rate was 100%.  All students responded that they understood how to use the HF and believed it was useful in BSL.  However, the level of satisfaction with the explanatory notes was significantly lower than that of other sections providing clinically useful additional information such as monographs or supplementary tables (<i>p</i><0.05).  More than 80% of the students considered monographs to be useful for obtaining information on side effects, warnings and contraindications, dosage and administration, indications, dosing in renal impairment, and drug name.  Students generally considered supplementary tables useful for obtaining information on serious side effects and their early identification, points of drug use in renal dysfunction, appropriate drug use in cancer chemotherapy, insulin and diabetes treatment, calculations of pediatric dosing, and a list of clinically used abbreviations.<br><b>Conclusion: </b>These results suggest that medical students believe an HF is useful in BSL.  When medical students participate in pharmacotherapy during BSL programs outside the Pharmacy Division, an HF that not only lists drugs but also contains supplementary tables of clinically useful information may be required.