Publications by authors named "Georgios Demetrios Kotzalidis"

Depression, anxiety, and perceived stress are common comorbidities in patients with inflammatory bowel disease (IBD) and may negatively influence the disease course. Likewise, severe IBD may contribute to the development or worsening of psychiatric symptoms. Despite the established relevance of the gut-brain axis and frequent use of psychotropic medications in IBD patients, limited evidence exists regarding the effects of psychiatric treatments on gastrointestinal disease activity.

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Although depression and anxiety are found to be affected by temperaments, little research has studied these relationships in pregnancy. The present study explored the associations among perinatal depression (PD), anxiety dimensions (state, trait, and generalized anxiety disorder (GAD)), and temperaments between women in the three trimesters of pregnancy through a network analysis approach. Moreover, differences in the severity of PD and anxiety between women in the three trimesters were evaluated.

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Introduction: Dopaminergic transmission impairment has been identified as one of the main neurobiological correlates of both depression and clinical symptoms commonly associated with its spectrum such as anhedonia and psychomotor retardation.

Objectives: We examined the relationship between dopaminergic deficit in the striatum, as measured by I-FP-CIT SPECT imaging, and specific psychopathological dimensions in patients with major depressive disorder.

Methods: To our knowledge this is the first study with a sample of >120 subjects.

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Background: The coronavirus disease 2019 (COVID-19) pandemic produced changes in intensive care units (ICUs) in patient care and health organizations. The pandemic event increased patients' risk of developing psychological symptoms during and after hospitalisation. These consequences also affected those family members who could not access the hospital.

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There is growing interest in the role that the intestinal microbiota and the related autoimmune processes may have in the genesis and presentation of some psychiatric diseases. An alteration in the communication of the microbiota-gut-brain axis, which constitutes a communicative model between the central nervous system (CNS) and the gastro-enteric tract, has been identified as one of the possible causes of some psychiatric diseases. The purpose of this narrative review is to describe evidence supporting a role of the gut microbiota in psychiatric diseases and the impact of diet on microbiota and mental health.

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Pregnancy is a unique experience in women's life, requiring a great ability of adaptation and self-reorganization; vulnerable women may be at increased risk of developing depressive symptoms. This study aimed to examine the incidence of depressive symptomatology during pregnancy and to evaluate the role of affective temperament traits and psychosocial risk factors in predicting them. We recruited 193 pregnant women, collected data regarding sociodemographic, family and personal clinical variables, social support and stressful life events and administered the Mood Disorder Questionnaire (MDQ), the Patient Health Questionnaire-9 (PHQ-9), and the Temperament Evaluation of Memphis, Pisa, Paris and San Diego-Autoquestionnaire (TEMPS-A).

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Objectives: There are reports of mental health worsening during the COVID-19 pandemic. We aimed to assess whether this occurred in women who were pregnant at baseline (late 2019) and unaware of the pandemic, and who delivered after the implementation of COVID-19 restrictions and threat (March-April 2020). To compare the pandemic period with the pre-pandemic, we capitalized on a retrospective 2014-2015 perinatal sample which had had affective symptoms assessed.

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Background: The coronavirus disease 2019 (COVID-19) pandemic impacted in a still undefined way pregnant women's mental health. There are reports of mood and affect changes in the general population and the suggestion that similar changes occur also in the pregnant population. The greater vulnerability of women during the COVID-19 restriction period may translate into a greater risk for mental disorders in the gestational period.

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Multiple chemical sensitivity (MCS) is a chronic condition with somatic, cognitive and affective symptoms that follow contact with chemical agents at usually non toxic concentrations. We aimed to assess the role of genetic polymorphisms involved in oxidative stress on anxiety and depression in MCS. Our study investigated the rs1001179, rs2333227, rs662 and rs705379 polymorphisms in MCS.

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A patient with comorbid intellectual disability, catatonic schizophrenia, and recurrent oneiroid state of consciousness improved on long-acting risperidone and remains well at the three-year follow-up. We report a case treated with 50 mg long-acting risperidone administered every 14 days, who has been followed-up for three years. We studied his regional cerebral blood flow through technetium-99 m hexamethylpropyleneamine oxime single-photon emission computed tomography after two years of treatment.

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Objectives: To evaluate the effectiveness and safety of maintenance electroconvulsive therapy (mECT) in elderly patients with treatment-resistant Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition major depressive episode.

Methods: Seven elderly patients with treatment-resistant major depressive episode were treated with a complete ECT cycle. Thereafter, they received one monthly ECT session as maintenance for 1 year.

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