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Featured researches published by I.M. Zervas.


European Neuropsychopharmacology | 2000

Olanzapine and obsessive-compulsive symptoms

Lefteris Lykouras; I.M. Zervas; Rossetos Gournellis; Meni Malliori; Andreas Rabavilas

Clozapine and risperidone have been implicated in the development of obsessive-compulsive symptoms. We present three cases in which olanzapine caused a significant exacerbation of obsessive-compulsive symptoms in schizophrenia (two cases) and obsessive-compulsive disorder (one case).


International Journal of Neuroscience | 2009

The effects of stressful life events on the course of multiple sclerosis: a review.

Charalampos Mitsonis; Constantin Potagas; I.M. Zervas; Konstantinos Sfagos

There is growing body of evidence that support an association between stressful life events and an increased risk for Multiple Sclerosis (MS) exacerbations. However, the nature of this relationship remains unclear, because of the lack of agreement about the definition of stress and/or because of research design problems. This article summarizes the psychological and biological mechanisms by which stress may impact MS progression. Findings indicate a number of factors, including stressor chronicity, frequency, severity and type, depression, anxiety, health locus of control, optimism, perceived social support, and coping strategies. Applied implications are discussed, concentrating on the need for multidisciplinary care interventions that target patients’ disease symptoms.


Annals of General Psychiatry | 2012

Reliability and validity of the KIDSCREEN-52 health-related quality of life questionnaire in a Greek adolescent population

Chara Tzavara; Anastasia Tzonou; I.M. Zervas; Ulricke Ravens-Sieberer; Christine Dimitrakaki; Yannis Tountas

BackgroundThe KIDSCREEN-52 is a worldwide instrument for measuring health-related quality of life (HRQoL) in children and adolescents. The aim of this study is to assess reliability and validity of the Greek version of KIDSCREEN.MethodsQuestionnaires were collected from a representative nationwide sample of 1,194 adolescents aged from 11 to 17 years. Internal consistency reliability was determined by calculation of the Cronbach α coefficient. A confirmatory factor analysis (CFA) was conducted in order to test the construct validity of the questionnaire. Validity was further examined by investigating the correlation of KIDSCREEN with the Strengths and Difficulties Questionnaire (SDQ) and its association with socioeconomic and health-related factors.ResultsInternal consistency reliability was accepted with a Cronbach α above 0.73 for all KIDSCREEN dimensions. CFA showed that the ten-dimensional model fitted the data well (root mean square error of approximation (RMSEA) = 0.048, comparative fit index (CFI) = 0.971 and goodness of fit index (GFI) = 0.965). Correlation coefficients between KIDSCREEN and SDQ dimensions were significant. Adolescents of low socioeconomic status reported lower scores in the majority of KIDSCREEN dimensions. Also, adolescents with chronic health problem had poorer quality of life concerning physical well-being and other dimensions of KIDSCREEN.ConclusionsThe Greek version of KIDSCREEN-52 was found to have satisfied psychometric properties and could be suitable for assessing HRQoL in Greek adolescents.


Gynecological Endocrinology | 2006

Quality of life and psychological symptoms in Greek postmenopausal women: association with hormone therapy.

Kalliopi L. Koundi; George E. Christodoulakos; Irene Lambrinoudaki; I.M. Zervas; Areti C. Spyropoulou; Panagiota Fexi; Pavlos Sakkas; Constantinos Soldatos; George Creatsas

Quality of life (QoL) in menopause is influenced by many parameters, including vasomotor symptoms, psychological status and culture. The aim of the present study was to examine the association of hormone therapy (HT) with QoL and psychological symptoms in Greek postmenopausal women. The study assessed 216 postmenopausal women (mean age 54.5 years) attending a university menopause clinic in Greece. Fifty-three were users of HT and 163 were not. QoL was evaluated by the Utian Quality of Life Scale (UQOL) and psychological symptoms were assessed by the Symptom Checklist-90-R (SCL-90-R). Women on HT were younger and more educated than women not using HT. Adjusting the analysis for the womens characteristics, HT users had better total UQOL scores than non-users (p < 0.05). Marital status and education had independent effects on QoL, with married and more educated women scoring higher (p < 0.05). Assessment of psychological symptomatology, after adjustment for sociodemographic variables across the different dimensions, revealed that HT users had better SCL-90-R scores than non-users for obsessionality, interpersonal sensitivity and for the general index (p < 0.05). Concluding, even though the impact of sociodemographic and lifestyle variables must be factored into the assessment of QoL, HT use is independently related to an improvement in the total score and in most domains of QoL, and has a significant positive effect on many aspects of psychological well-being in Greek postmenopausal women.


European Psychiatry | 2009

P01-243 Correlation between depression and interferon-beta therapy in patients with multiple sclerosis: A systematic review

I.M. Zervas; Charalampos Mitsonis; N. Dimopoulos; V. Psarra; Constantin Potagas; George N. Papadimitriou

Introduction Depression is the most frequent psychiatric disorder encountered in patients with Multiple Sclerosis (MS), with a life-time prevalence of approximately 50%. INF-beta (INF-β) shows beneficial effect on the course of MS. Although it has been suggested that interferons may be associated to depression, the validity and the nature of this relationship remain unclear regarding INF-β. The objective of this study is to review the scientific literature in order to elucidate the relationship between depression and INF-β therapy. Methods This systematic review was based on Medline, Embase and, PsycLIT literature searches (through January 2005), supplemented by bibliographical citations in identified papers. Results The majority of studies ruled out a correlation between INF-β1a/1b and depression in MS patients. However, patients with a recent history of depression may be at higher risk for depression particularly in the early phase of treatment (first 6 months), even if they are not depressed at the initiation of medication. There is an association between depressive symptoms and discontinuation of INF therapy but INF-β does not seem to be associated with suicide attempts. Treating patient-reported depression increases adherence to treatment. Conclusions Clinicians should not refrain from including patients with MS in INF-β treatment programs, even those with depression in the past or at the present time. Screening, monitoring, and early antidepressant treatment is necessary to optimize IFN therapy for the majority of patients with MS.


European Psychiatry | 2006

Set shifting deficits in melancholic vs. non-melancholic depression: preliminary findings

Ioannis Michopoulos; I.M. Zervas; V.-M. Papakosta; Eleftheria Tsaltas; Charalambos Papageorgiou; T. Manessi; Yiannis G. Papakostas; Lefteris Lykouras; C.R. Soldatos


Academic Psychiatry | 2006

The Screening Role of an Introductory Course in Cognitive Therapy Training

Artemios Pehlivanidis; Katerina Papanikolaou; Antonis Politis; Angeliki Liossi; Evgenia Daskalopoulou; Rossetos Gournellis; Marina Soldatos; Vasiliki Maria Papakosta; I.M. Zervas; Yiannis G. Papakostas


European Neuropsychopharmacology | 2000

Olanzapine and obsessivecompulsive symptoms

Lefteris Lykouras; I.M. Zervas; Rossetos Gournellis; Meni Malliori; Andreas Rabavilas


European Psychiatry | 2008

Influence of stressful life events frequency on multiple sclerosis disease activity

Charalampos Mitsonis; I.M. Zervas; Nikolaos Dimopoulos; V.V. Psara; G.P. Sotiropoulos; Constantin Potagas; Constantin A. Sfagos; George N. Papadimitriou


European Psychiatry | 2011

P01-590 - Hormones in the immediate postpartum period as a risk factor for postnatal depression, at two months postpartum

A.A. Leonardou; F. Boufidou; I.M. Zervas; C. Nikolaou; I. Lambrinoudaki; Charalambos Papageorgiou; George N. Christodoulou; George N. Papadimitriou

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George N. Papadimitriou

National and Kapodistrian University of Athens

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Costas N. Stefanis

Mental Health Research Institute

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