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Uygur H, Tekdemir R, Uygur OF, Aydin EF, Celik M, Babacan HE, Hursitoglu O. Psychometric properties of the Turkish reduced morningness and eveningness questionnaire. Chronobiol Int 2024; 41:632-646. [PMID: 38629999 DOI: 10.1080/07420528.2024.2339964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 04/02/2024] [Indexed: 05/22/2024]
Abstract
The aim of this study was to examine the psychometric properties of the 5-item Turkish Reduced Morningness-Eveningness Questionnaire (rMEQ) for the first time. The study involved 875 university students in an adaptation and validation study. Participants completed the rMEQ, MEQ, Depression Anxiety Stress Scale-21 (DASS-21), Insomnia Severity Index (ISI), Barratt Impulsiveness Scale Short Form (BIS-SF), and Oxford Happiness Questionnaire Short Form (OHQ-SF). The factor structure, convergent validity, internal consistency, sensitivity, and specificity of the rMEQ were examined. The confirmatory factor analysis showed that the rMEQ had a one-dimensional structure with good fit indices (χ2/df = 2.94, CFI = 0.990, TLI = 0.979, RMSEA = 0.047, and SRMR = 0.019). There was a significantly strong correlation between rMEQ and MEQ. In addition, we found a significantly weak correlation between rMEQ and DASS-21, ISI, BIS-SF, and OHQ-SF. The internal consistency coefficients of rMEQ were Cronbach's α = 0.706 and McDonald's ω = 0.740. The sensitivity and specificity of rMEQ were 83.3%-92.7% for morning types and 86.3%-87.3% for evening types. The Turkish rMEQ has adequate psychometric properties and can be used to assess an individual's chronotype.
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Affiliation(s)
- Hilal Uygur
- Department of Psychiatry, Erzurum Training and Research Hospital, Erzurum, Turkey
| | - Rukiye Tekdemir
- Department of Psychiatry, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Omer Faruk Uygur
- Department of Psychiatry, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Esat Fahri Aydin
- Department of Psychiatry, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Merve Celik
- Department of Psychiatry, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Hakan Emre Babacan
- Department of Psychiatry, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey
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Kandeger A, Uygur OF, Ataslar EY, Cınar F, Selvi Y. A pilot study examining hemomania behaviors in psychiatry outpatients engaged with nonsuicidal self-injury. Brain Behav 2024; 14:e3475. [PMID: 38594228 PMCID: PMC11004038 DOI: 10.1002/brb3.3475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/05/2024] [Accepted: 03/20/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND This study aims to conduct the first-ever evaluation of our previously proposed behaviors of "hemomania" in individuals engaged with nonsuicidal self-injury (NSSI). METHODS The study encompassed 130 outpatients engaged with NSSI who applied at the psychiatry outpatient clinic. NSSI behaviors were assessed using the Inventory of Statements About Self-Injury, while psychiatric diagnoses were evaluated using the Structured Clinical Interview for DSM-5 Disorders-Clinician Version. Subsequently, participants completed the Depression Anxiety Stress Scale-21 and Short Form of Barratt Impulsiveness Scale. RESULTS The prevalence of at least one hemomania behavior including seeing blood, tasting blood, bloodletting, and blood-drinking was observed to be 43.1% in individuals with NSSI. When participants were divided into two groups, individuals with hemomania exhibited: (1) a higher incidence of psychiatric comorbidities, increased suicide attempts, and more severe symptoms of depression, anxiety, stress, and impulsivity, (2) higher comorbidity rates of borderline personality disorder, body-focused repetitive behaviors, and dissociative disorders, and (3) elevated frequencies of certain NSSI behaviors, including cutting, biting, needle-ticking, and carving, compared to those without. CONCLUSION Hemomania could be considered a specific impulse control disorder, characterized by heightened impulsivity and a persistent urge to obtain one's own blood. However, further studies are needed to validate this hypothesis.
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Affiliation(s)
- Ali Kandeger
- Department of PsychiatrySelçuk UniversityKonyaTürkiye
| | | | | | - Furkan Cınar
- Department of PsychiatrySelçuk UniversityKonyaTürkiye
| | - Yavuz Selvi
- Department of PsychiatrySelçuk UniversityKonyaTürkiye
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Uygur H, Ahmed O, Uygur OF, Miller CB, Hursitoglu O, Bahar A, Demiroz D, Drake CL. Validity and Reliability of the Turkish Version of the Sleep Condition Indicator: A Clinical Screening Instrument Based on the DSM-5 Criteria for Insomnia. Nat Sci Sleep 2024; 16:63-74. [PMID: 38318264 PMCID: PMC10840414 DOI: 10.2147/nss.s433656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/24/2024] [Indexed: 02/07/2024] Open
Abstract
Purpose We aimed to adapt the Turkish Sleep Condition Indicator (SCI) version and examine its psychometric properties among the general population. Methods This study was a cross-sectional study. The item-total correlation, standard error of measurement, Cronbach's α, and McDonald's ω were used for internal consistency. We ran confirmatory factor analysis (CFA) and network analysis to confirm the factor structure. Multigroup CFA was run to assess the measurement invariance across gender, whether clinical insomnia or not, and poor sleep quality. We correlated SCI scores with Insomnia Severity Index (ISI) and Pittsburgh Sleep Quality Index (PSQI) scores to evaluate construct validity. A receiver operating characteristic (ROC) curve analysis was conducted to calculate the cut-off score of the SCI. The temporal stability was examined with the intraclass correlation coefficient. Results Eight hundred thirty-four participants attended. Over half of the participants were women (63.2% n = 527); the mean age was 36.15 ± 9.64. Confirmatory factor and network analysis results show that the two-factor correlated model had a good model fit for the SCI. The SCI had scalar level invariance across gender, having clinical insomnia and poor sleep quality in the Multigroup CFA. ROC curve analysis shows that the SCI has good sensitivity (90.3%) and specificity (91.8%) for cut-off ≤ 15. The intraclass correlation coefficient computed between the first and second SCI total scores was significant (r=0.80 with a 95% confidence interval from 0.78 to 0.87; p < 0.001). Conclusion The Turkish SCI is a practical self-reported insomnia scale with good psychometric properties that can be used to screen for insomnia disorder.
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Affiliation(s)
- Hilal Uygur
- Department of Psychiatry, Erzurum Training and Research Hospital, Erzurum, Turkey
| | - Oli Ahmed
- Department of Psychology, University of Chittagong, Chattogram, Bangladesh
| | - Omer Faruk Uygur
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Christopher B Miller
- Big Health Ltd, London, UK
- Department of Clinical Neurosciences, Sleep and Circadian Neuroscience Institute, University of Oxford, Oxford, UK
| | - Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey
| | - Aynur Bahar
- Department of Psychiatric Nursing, Gaziantep University Faculty of Health Sciences, Gaziantep, Turkey
| | - Dudu Demiroz
- Department of Psychiatry, Karamanoglu Mehmetbey University, Karaman, Turkey
| | - Christopher L Drake
- Henry Ford Hospital Sleep Disorders and Research Center, Detroit, MI, USA
- Department of Psychiatry and Behavioral Neurosciences, Wayne State College of Medicine, Detroit, MI, USA
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Kandeger A, Uygur OF, Chung S, Yavuz E, Selvi Y. Delayed Mid-Sleep Time Associated With Weight Gain While Controlling for Eating Behaviors and Attention Deficit Hyperactivity Disorder Symptoms During the COVID-19 Pandemic. Psychiatry Investig 2023; 20:768-774. [PMID: 37559450 PMCID: PMC10460974 DOI: 10.30773/pi.2022.0326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 04/12/2023] [Accepted: 05/31/2023] [Indexed: 08/11/2023] Open
Abstract
OBJECTIVE Society's sleep-wake cycle and eating behaviors have altered and are considered the psychological outcomes of the coronavirus disease-2019 (COVID-19) pandemic. Our aim was to examine the relationship between sleep-wake rhythms, eating behaviors (dieting, oral control, and bulimic behaviors), and attention deficit hyperactivity disorder (ADHD) symptoms with weight gain during the COVID-19 pandemic. METHODS The participants were 578 female university students divided into three groups based on weight change during COVID-19 who lost weight, whose weight did not change (nWC), and who gained weight (WG). The participants' information about weight change in the last year and responses to the Pittsburg Sleep Quality Index, Eating Attitudes Test, Adult ADHD Severity Rating Scale, and Wender Utah Rating Scale were collected via an online survey from January 8, 2021 to January 11, 2021. RESULTS The sleep-wake phase was more delayed in WGs than in the other two groups. The bulimic behavior score was higher and the oral control behavior score was lower in the WG group than in the nWC group. A hierarchical regression analysis model, in which weight change scores were dependent variables, showed that mid-sleep time in second step (β=4.71, t=2.18, p=0.03), and oral control (β=-0.11, t=-3.24, p=0.001)/bulimic behaviors (β=0.20, t=3.20, p=0.001) in third step were associated with weight change after controlling for both current and childhood ADHD symptoms. CONCLUSION Chronotherapeutic approaches that regulate sleep-wake rhythm may facilitate weight control of individuals during stressful periods, such as the COVID-19 outbreak.
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Affiliation(s)
- Ali Kandeger
- Department of Psychiatry, Faculty of Medicine, Selçuk University, Konya, Türkiye
| | - Omer Faruk Uygur
- Department of Psychiatry, Faculty of Medicine, Atatürk University, Erzurum, Türkiye
| | - Seockhoon Chung
- Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Elif Yavuz
- Department of Psychiatry, Faculty of Medicine, Selçuk University, Konya, Türkiye
| | - Yavuz Selvi
- Department of Psychiatry, Faculty of Medicine, Selçuk University, Konya, Türkiye
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Uygur OF, Bahar A. Sleep Effort and Insomnia Severity: The Role of Bedtime Procrastination. Sleep Med Res 2023. [DOI: 10.17241/smr.2023.01655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Background and Objective We aimed to investigate the mediating role of bedtime procrastination in the relationship between sleep effort and insomnia severity in this study.Methods We included 497 university students in this study. All the participants completed the sociodemographic data form, Glasgow Sleep Effort Scale (GSES), Insomnia Severity Index (ISI), Depression-Anxiety-Stress Scale-21 (DASS-21), and Bedtime Procrastination Scale (BPS). We divided the participants into groups, according to their GSES and BPS scores, those with high-low sleep effort and those with BP (+) and BP (-), respectively. We compared the variables in these groups. Finally, we analyzed the mediating role of bedtime procrastination in the relationship between sleep effort and insomnia severity.Results The mean age of the participants was 20.41 ± 1.83 years. ISI, BPS, and DASS-21 were statistically significant in the group with high sleep effort (p < 0.01). Among the psychometric instrument scores, the highest correlation with GSES was with ISI, and then there was a statistically significant positive correlation with DASS-21. In addition, there was a statistically significant positive correlation between GSES and BPS. Bedtime procrastination played a partial mediation role in the relationship between sleep effort and insomnia severity.Conclusions Bedtime procrastination partially mediated the relationship between sleep effort and insomnia severity. Therapists should consider sleep effort and bedtime procrastination on their agenda in cognitive behavioral therapy sessions for insomnia.
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Sleiman J, Cho E, Lee D, Cho IK, Chung S, Uygur OF. Does Viral Anxiety Influence the Insomnia Severity Among Patients With Insomnia Disorder During COVID-19 Pandemic? Sleep Med Res 2023. [DOI: 10.17241/smr.2022.01480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Background and Objective We aimed to investigate whether viral anxiety affects insomnia severity in patients with insomnia disorder during the coronavirus disease 2019 (COVID-19) pandemic. In addition, we examined whether viral anxiety mediates the influence of dysfunctional beliefs about sleep on insomnia severity.Methods The medical records of 111 patients who visit the sleep clinic from September 2021 to May 2022 were reviewed. Patients’ symptoms were rated with rating scales including Insomnia Severity Index (ISI), Stress and Anxiety to Viral Epidemics-6 items (SAVE-6), Dysfunctional Beliefs and Attitudes about Sleep-16 items (DBAS-16), Patient Health Questionnaire-9 items (PHQ-9), Epworth Sleepiness Scale, and discrepancy between desired time in bed and desired total sleep time (the DBST index).Results The SAVE-6 score was not significantly correlated with ISI score among insomnia patients. Linear regression analysis showed that the ISI score was expected by PHQ-9 (β = 0.21, p = 0.038) and DBAS-16 (β = 0.42, p < 0.001). Mediation analysis showed that viral anxiety did not mediate the influence of dysfunctional beliefs about sleep on insomnia severity.Conclusions We could not observe the mediating effect of viral anxiety on the association between dysfunctional beliefs about sleep on insomnia severity. Though COVID-somnia was one of big issues in this COVID-19 pandemic, the influence of virus on the severity of insomnia among insomnia patients needs to be interpreted cautiously.
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Hursitoglu O, Kurutas EB, Strawbridge R, Oner E, Gungor M, Tuman TC, Uygur OF. Serum NOX1 and Raftlin as new potential biomarkers of Major Depressive Disorder: A study in treatment-naive first episode patients. Prog Neuropsychopharmacol Biol Psychiatry 2023; 121:110670. [PMID: 36341844 DOI: 10.1016/j.pnpbp.2022.110670] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Biological factors are known to be important in understanding the pathogenesis of Major Depressive Disorder (MDD). Oxidative stress and neuroinflammation pathways are likely to play a critical role here. METHODS We undertook a study to investigate two novel biomarkers - serum NADPH oxidase 1 (NOX1) and Raftlin levels - in treatment-naive, smoking-free first episode patients with MDD compared to healthy controls (HCs) matched for age, sex and body mass index. RESULTS We found increased NOX1 and Raftlin levels in MDD patients compared to HCs. Both parameters showed very good diagnostic performance in the MDD group. In addition, we found a significant positive correlation between depression severity (HAMD) scores and both biomarker levels in the patient group. CONCLUSION To the best of our knowledge, this is the first human study to evaluate serum NOX1 and Raftlin levels in depression. NOX1, an important source of reactive oxygen species (ROS), and Raftlin, which may play a role in the inflammatory process, represent novel potential biomarkers of MDD. These findings support the implication of oxidative stress and inflammatory processes in patients with MDD, and indicate that the deteriorated ROS-antioxidant balance can be regulated via NOX1 in patients with depression.
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Affiliation(s)
- Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey.
| | - Ergul Belge Kurutas
- Department of Biochemistry, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Rebecca Strawbridge
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Erkan Oner
- Department of Biochemistry, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Meltem Gungor
- Department of Medical Biochemistry, Faculty of Medicine, Sanko University, Gaziantep, Turkey
| | - Taha Can Tuman
- Medipol University, Medical Faculty, Department of Psychiatry, İstanbul, Turkey
| | - Omer Faruk Uygur
- Ataturk University, Medical Faculty, Department of Psychiatry, Erzurum, Turkey
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Uygur OF, Ahmed O, Uygur H, Bahar A, Hursitoglu O, Chung S, Drake CL. Type D personality to insomnia: Sleep reactivity, sleep effort, and sleep hygiene as mediators. Front Psychiatry 2023; 14:1160772. [PMID: 37113537 PMCID: PMC10128995 DOI: 10.3389/fpsyt.2023.1160772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/23/2023] [Indexed: 04/29/2023] Open
Abstract
Background Insomniacs are heterogenous group with very diverse personalities. We aimed to investigate the mediating role of sleep reactivity (SR), sleep hygiene (SH), and sleep effort (SE) in the relationship between Type D personality and insomnia. Materials and methods We conducted a cross-sectional survey among 474 participants. The survey comprised the sociodemographic data form, Insomnia Severity Index (ISI), D Type Personality Scale (DS-14), Ford Insomnia Response to Stress Test (FIRST), Glasgow Sleep Effort Scale (GSES), and Sleep Hygiene Index (SHI). We conducted hierarchical multiple regression analysis to identify the associations between age, sex, SR, Type D personality traits, SE, SH, and insomnia severity. We subsequently conducted mediation analyses to examine whether SR, SH, and SE mediated the relationship between Type D personality and insomnia. Results ISI, DS-14, FIRST, SHI, and GSES scores were significantly higher in individuals with Type D personality. Female sex, SR, Type D personality traits, SE, and SH explained 45% of the variance in insomnia severity. When age, sex, insomnia response to stress, and Type D personality traits were controlled, SE and SH significantly explained 25% of the variance in insomnia severity (R 2 = 0.45, R 2 change = 0.25, F (6.474) = 65.58, p < 0.001). SR, SE, and SH each played a partial mediating role between Type D personality and insomnia. Conclusion The findings showed that individuals with Type D personality had high SR and that individuals with a higher number of these personality traits exhibited more severe insomnia symptoms through high SR, greater SE, and worse SH.
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Affiliation(s)
- Omer Faruk Uygur
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Türkiye
- *Correspondence: Omer Faruk Uygur,
| | - Oli Ahmed
- Department of Psychology, University of Chittagong, Chattogram, Bangladesh
| | - Hilal Uygur
- Department of Psychiatry, Erzurum Training and Research Hospital, Erzurum, Türkiye
| | - Aynur Bahar
- Department of Psychiatric Nursing, Gaziantep University Faculty of Health Sciences, Gaziantep, Türkiye
| | - Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Türkiye
| | - Seockhoon Chung
- Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Christopher L. Drake
- Henry Ford Hospital Sleep Disorders and Research Center, Detroit, MI, United States
- Department of Psychiatry and Behavioral Neurosciences, Wayne State College of Medicine, Detroit, MI, United States
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Uygur OF, Ahmed O, Bahar A, Hursitoglu O, Aydın EF, Chung S, Ozcan H, Drake CL. Adaptation and Validation of the Turkish Version of the Ford Insomnia Response to Stress Test in University Students. Nat Sci Sleep 2023; 15:139-149. [PMID: 37008595 PMCID: PMC10065018 DOI: 10.2147/nss.s398489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/20/2023] [Indexed: 04/04/2023] Open
Abstract
Objective We adapted the Ford Insomnia Response to Stress Test to Turkish (FIRST-T) and validated it. Methods We randomly divided 774 Turkish university students into two equal groups for exploratory (EFA) and confirmatory factor analysis (CFA). McDonald's omega and Cronbach's alpha values were utilized for reliability analyses. Item response theory (IRT) approach also used for psychometric properties on the full sample. For discriminant validity, study sample were classified into high and low sleep reactivity groups, and their sociodemographic and sleep data were compared. Results EFA results suggested a one-factor structure of the FIRST-T, which was confirmed by CFA results. The FIRST-T had solid internal reliability. Item analysis results showed that all the items could distinguish between low and high scorers. This scale showed the same construct (clinical insomnia vs good sleepers) across the sexes in multi-group CFA and differential item functioning results. In the high FIRST-T score group, sleep quality, severity of insomnia, and anxiety scores were higher. In this group, more participants had clinical insomnia according to the Insomnia Severity Index (ISI) and were poor sleepers according to the Pittsburg Sleep Quality Index (PSQI) (p < 0.01). Conclusion The FIRST-T has robust psychometric properties that assesses sleep reactivity among university students.
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Affiliation(s)
- Omer Faruk Uygur
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey
- Correspondence: Omer Faruk Uygur, Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey, Tel +90 442 344 66 66, Email
| | - Oli Ahmed
- Department of Psychology, University of Chittagong, Chattogram, Bangladesh
| | - Aynur Bahar
- Department of Psychiatric Nursing, Gaziantep University Faculty of Health Sciences, Gaziantep, Turkey
| | - Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey
| | - Esat Fahri Aydın
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Seockhoon Chung
- Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Halil Ozcan
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Christopher L Drake
- Henry Ford Hospital Sleep Disorders and Research Center, Detroit, MI, USA
- Department of Psychiatry and Behavioral Neurosciences, Wayne State College of Medicine, Detroit, MI, USA
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Hurşitoğlu O, Kurutas EB, Strawbridge R, Uygur OF, Yildiz E, Reilly TJ. Serum NOX1 and Raftlin as New Potential Biomarkers of Interest in Schizophrenia: A Preliminary Study. Neuropsychiatr Dis Treat 2022; 18:2519-2527. [PMID: 36349345 PMCID: PMC9637347 DOI: 10.2147/ndt.s385631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/26/2022] [Indexed: 01/24/2023] Open
Abstract
Introduction There is increasing evidence that oxidative stress (OS) and neuroinflammation play a role in the neuroprogression of schizophrenia (SCZ). Promising novel candidates which have been proposed in the search for biomarkers of psychotic illness include NADPH oxidase 1,2 (NOX1,2) and raftlin. NOX1 from the NOX family is the main source of physiological reactive oxygen species (ROS) and raftlin, the main lipid raft protein, is associated with inflammatory processes. The aim of the present study was to evaluate serum NOX1 and raftlin levels in chronic stable patients with SCZ. Methods We measured serum NOX1 and raftlin levels from 45 clinically stable patients with SCZ and 45 healthy controls (HCs) matched for age, sex, and body-mass index. The Positive and Negative Syndrome Scale was applied to the patient group to evaluate the severity of psychotic symptoms. Results NOX1 and raftlin levels in the patients were statistically significantly higher than the HCs (NOX1 p<0.001, raftlin p<0.001). Both parameters showed very good diagnostic performance (NOX1 AUC = 0.931, raftlin AUC = 0.915). We obtained positive and significant correlations between serum levels of both biomarkers and symptom severity. Discussion This preliminary study indicating elevations in serum NOX1 and raftlin levels in patients with SCZ supports the importance of OS and inflammatory processes in the etiopathogenesis of the illness.
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Affiliation(s)
- Onur Hurşitoğlu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey
| | - Ergul Belge Kurutas
- Department of Biochemistry, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Rebecca Strawbridge
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Omer Faruk Uygur
- Department of Psychiatry, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Emrah Yildiz
- Private Clinic, Department of Psychiatry, Gaziantep, Turkey
| | - Thomas J Reilly
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
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Uygur OF, Uygur H, Chung S, Ahmed O, Demiroz D, Aydin EF, Hursitoglu O. Validity and reliability of the Turkish version of the Glasgow Sleep Effort Scale. Sleep Med 2022; 98:144-151. [PMID: 35853331 DOI: 10.1016/j.sleep.2022.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/25/2022] [Accepted: 06/30/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVE We aimed to assess the validity and reliability of a Turkish adaptation of the Glasgow Sleep Effort Scale (GSES). METHODS We randomly divided the data into two: one set (n = 374) was used for exploratory factor analysis (EFA) and the other (n = 373) for confirmatory factor analysis (CFA). The psychometric properties were assessed using the item response theory approach. Reliability analyses were assessed. Convergent validity of the GSES with the Dysfunctional Beliefs and Attitudes About Sleep Scale-16 (DBAS-16), Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Index (ISI), and Depression Anxiety Stress Scale-21 (DASS-21) were explored. For the predictive validity, we used an independent-samples t-test for comparing the total score of the GSES between poor sleepers and good sleepers following the PSQI, and between clinical insomnia and non-clinical insomnia groups according to the ISI. The cut-off score of the GSES was examined. RESULTS A single factor structure explaining 49.2% of the total variance was detected using the EFA. The CFA also found single-factor good fit indices. Cronbach's alpha and omega values were 0.82 and 0.83, respectively. There were statistically significant correlations between the GSES and DBAS-16, ISI, PSQI, and DASS-21 in convergent validity. In the Graded Response Model, the GSES was more efficient and provided reasonable information at the -0.75 to 2.25 theta level. The GSES cut-off score was 6 points for clinical insomnia and 3 points for poor sleepers. CONCLUSIONS The GSES is valid and reliable for measuring sleep effort among Turkish university students.
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Affiliation(s)
- Omer Faruk Uygur
- Department of Psychiatry, Dr. Ersin Arslan Training and Research Hospital, Gaziantep, Turkey.
| | - Hilal Uygur
- Department of Psychiatry, Dr. Ersin Arslan Training and Research Hospital, Gaziantep, Turkey
| | - Seockhoon Chung
- Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Oli Ahmed
- Department of Psychology, University of Chittagong, Chattogram, Bangladesh
| | - Dudu Demiroz
- Department of Psychiatry, Karaman Training and Research Hospital, Karaman, Turkey
| | - Esat Fahri Aydin
- Department of Psychiatry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Onur Hursitoglu
- Department of Psychiatry, Sular Academy Hospital, Kahramanmaras, Turkey
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