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      • KCI등재

        The Effectiveness of Methylphenidate in the Treatment of Encopresis Independent from Attention-Deficit Hyperactivity Disorder Symptoms

        Ömer Faruk Akça,Savas¸ Yılmaz 대한신경정신의학회 2015 PSYCHIATRY INVESTIGATION Vol.12 No.1

        Several medications are reported to be effective in treatment of encopresis. However, mechanisms of action related to these drugs are not known. We report a patient with ADHD and encopresis whose encopretic signs have disappeared with long acting methylphenidate while they have not changed with atomoxetine.

      • KCI등재

        Comparison of MicroRNA Levels of 18−60-month-old Autistic Children with Those of Their Siblings and Controls

        Hülya Karagöz,Ömer Faruk Akça,Mahmut Selman Yıldırım,Ayşe Gül Zamani,Mehmet Burhan Oflaz 대한정신약물학회 2024 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.22 No.2

        Objective: The present study aims to compare the levels of 7 microRNAs (mi-RNAs) (mi-RNA-125b, mi-RNA-23a-3p, mi-RNA-146a-5p, mi-RNA-106a, mi-RNA-151a-3p, mi-RNA-28, mi-RNA-125a) in the blood of the preschool children with autism and those of their siblings with healthy controls, and to investigate the association between these mi-RNAs and the severity of autism, behavioral problems, and siblings’ autistic traits. Methods: A total of 35 children diagnosed with autism spectrum disorder (ASD) at the ages of 18−60 months (patient group), 35 non-affected siblings of the ASD group (sibling group), and 30 control subjects (control group) were involved in the study. The severity of ASD was measured using the Childhood Autism Rating Scale and the Autism Behavior Checklist (ABC). The behavioral problems of the children with ASD were assessed with the Aberrant Behavior Checklist, and the autistic traits of the siblings were assessed using the Autism spectrum screening scale for children. Results: mi-RNA-106a-5p, mi-RNA-151a-3p, and mi-RNA-28-3p were found to be expressed significantly lower in the patient group compared to the control group. There was a significant positive correlation between mi-RNA-23a and the sensory subscale of the ABC. mi-RNA-151a was significantly associated with sound sensitivity and mi-RNA-28 with echolalia. After controlling for age and sex, the differences between groups were disappeared. Conclusion: The present study examined mi-RNAs that have been reported as biomarkers in the literature. Although several symptom clusters are found to be related to certain mi-RNA expression levels, they were not found to be significant in discriminating the patient and healthy groups.

      • SCIESCOPUSKCI등재

        Oxytocin and Vasopressin Levels and Related Factors in Adolescents with Social Phobia and Other Anxiety Disorders

        Necati Uzun,Ö,mer Faruk Akç,a,İ,brahim Kılınç,Tevfik Balcı 대한정신약물학회 2022 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.20 No.2

        Objective: This study aimed to determine whether a difference exists in plasma oxytocin and vasopressin levels among social anxiety disorder, other anxiety disorders, and healthy control groups in adolescents. The relationship between several psychiatric variables (i.e., state and trait anxiety, social anxiety, childhood trauma, and behavioral inhibition) and oxytocin or vasopressin levels were also investigated in adolescents with anxiety disorders. Methods: The study included three groups of adolescents: social anxiety disorder (n = 29), those with other anxiety disorders (n = 27), and the control group (n = 28). The participants filled out self-report scales to determine various psychological variables. Oxytocin and vasopressin levels were determined from the blood samples of the participants. Results: The oxytocin levels did not show a significant difference between the social anxiety disorder group and the other anxiety disorders group. However, the oxytocin levels were significantly higher in the social anxiety disorder and other anxiety disorders groups than in the control group. The vasopressin levels did not show a significant difference among the groups. According to the hierarchical regression analysis, the state and trait anxiety levels predicted oxytocin in opposite directions. Oxytocin showed positive and negative relationship with trait and state anxiety respectively. No predictive factors were found for the vasopressin levels. Conclusion: We found that the oxytocin levels of adolescents with social anxiety disorder were not different from those of adolescents with other anxiety disorders. Further studies can improve our knowledge of the relationship among anxiety disorders and oxytocin or vasopressin.

      • KCI등재

        Mediating Effect of Viral Anxiety and Perceived Benefits of Physical Distancing on Adherence to Distancing Among High School Students Amid COVID-19

        Lee Taeyeop,Lee Joohee,Kim Harin,Park C. Hyung Keun,Park Jangho,Kim Hyo-Won,Akça Ömer Faruk,Chung Seockhoon 대한의학회 2022 Journal of Korean medical science Vol.37 No.17

        Background: The aim of this study is to explore whether high school students’ adherence to physical distancing was associated with health beliefs, social norms, and psychological factors during the coronavirus disease 2019 (COVID-19) pandemic. Methods: Overall, 300 high school students participated in this anonymous online survey conducted from October 18–24, 2021. The survey included rating scales such as attitude toward physical distancing during the pandemic, Stress and Anxiety to Viral Epidemics-6 items (SAVE-6), Patient Health Questionnaire-9 items, Satisfaction with Life Scale, and Connor Davidson Resilience Scale 2-items. Results: The results revealed that perceived susceptibility or severity (β = −0.13, P = 0.038), perceived benefit (β = 0.32, P < 0.001), descriptive social norms (β = 0.10, P = 0.041), social injunctive norms (β = 0.19, P < 0.001), and SAVE-6 (β = 0.24, P < 0.001) predicted students’ adherence to physical distancing (adjusted R2 = 0.42, F = 19.2, P < 0.001). Social injunctive norms and personal injunctive norms directly influenced adherence to physical distancing. Viral anxiety, measured by SAVE-6, mediated the association between social injunctive norms and adherence to physical distancing, and perceived benefits mediated the relationship between personal injunctive norms and adherence to physical distancing. The influence of perceived susceptibility or severity on adherence to physical distancing was entirely mediated by perceived benefits or viral anxiety. Conclusion: Explaining the rationale or benefits of physical distancing may be important in increasing adherence to physical distancing among high school students.

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