Tıp Fakültesi / Faculty of Medicine

Permanent URI for this collectionhttps://hdl.handle.net/11727/1403

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Author: search.filters.author.Kotan, Vahap OzanSubject: search.filters.subject.Depression

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    Serum glial cell line-derived neurotrophic factor levels and impulsivity in heroin addiction: a cross-sectional, case-control study of 129 heroin addicts
    (2018) Kotan, Vahap Ozan; Yuksel, Rabia Nazik; Kotan, Zeynep; Okay, Ihsan Tuncer; Topcuoglu, Canan; Ozkaya, Guven; Bayram, Senol; Goka, Erol
    OBJECTIVE: Glial cell line-derived neurotrophic factor (GDNF), being a protective of dopaminergic neurons, is reported to modulate addictive behaviours and have a role as a negative regulator for biochemical and behavioural adaptations to drug abuse. We aimed to reveal impulsivity and serum GDNF levels in patients with heroin addiction and investigate their relationships in order to contribute to the understanding of behavioural aspects and biological mechanisms in heroin addiction via this study. METHODS: This study was performed at the Department of Psychiatry of Ankara Numune Training and Research Hospital, Turkey. We recruited 129 heroin-dependent patients and 90 age, sex, and smoking-matched healthy controls with no major psychopathology. Barratt Impulsivity Scale-11, Hospital Anxiety and Depression Scale (HADS) and sociodemographic data form were applied to all participants. Laboratory analysis for serum GDNF levels was performed for each participant's blood sample. RESULTS: Total impulsivity scores and scores of Attentional Impulsivity, Motor Impulsivity, and Unplanned Impulsivity subscales were all higher in heroin addicts compared to the controls. Heroin addicts had also lower serum GDNF levels and lower GDNF levels were associated with high impulsivity and high HADS scores in heroin addicts. CONCLUSION: Decrement in GDNF levels in heroin addiction seems as to be an important data which could be associated with impulsivity, anxiety, and depressive symptoms. GDNF could find a prominent place among the target molecules in the treatment of heroin addiction.
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    The relationship between internalized stigma and treatment motivation, perceived social support, depression and anxiety levels in opioid use disorder
    (2018) Akdag, Emine Merve; Kotan, Vahap Ozan; Kose, Samet; Tikir, Baise; Aydemir, Makbule Cigdem; Okay, İhsan Tuncer; Goka, Erol; Ozkaya, Goven
    OBJECTIVE: This study aims to examine how internalized stigma differs in opioid use disorder (OUD) based on sociodemographic and clinical variables, and to what extent internalized stigma is related to treatment motivation, perceived social support, depression, and anxiety levels. METHODS: One hundred forty-five individuals with OUD included. Sociodemographic and clinical data form, the Internalized Stigma of Mental Illness Scale (ISMI), Treatment Motivation Questionnaire (TMQ), Multidimensional Scale of Perceived Social Support, the Beck Depression Inventory, and the Beck Anxiety Inventory were utilized in the study to collect data. Bivariate and partial correlation coefficients between variables were computed. ISMI and TMQ scores were compared between patients with depressive symptoms and patients without depressive symptoms by using t-test and Mann Whitney U test. RESULTS: Internalized stigma was high among male patients with heroin use disorder. There was a positive correlation between internalized stigma score and treatment motivation, depression, and anxiety levels. On the other hand, there was a negative correlation between internalized stigma score and multidimensional perceived social support. CONCLUSION: Internalized stigma occupies an important place in the treatment of OUD, which occurs with frequent relapses and which is hard to treat. Not only application for treatment but also adherence to treatment and treatment motivation at maintenance phase bestow a complicated relationship with depression and anxiety. In the struggle against internalized stigma, it plays a vital role to mobilize people's social support systems, to educate families on the issue and to get in touch with support units exclusive to heroin users.