Publications by authors named "Jerzy Samochowiec"

Social disconnection, manifesting as social isolation and/or loneliness, might be associated with psychotic-like experiences (PLEs). There is evidence that lonely individuals tend to focus on social threats instead of searching for opportunities to reconnect with others. Following these considerations, aims of the present study were as follows: (1) to assess momentary patterns of social disconnection in people with PLEs and (2) to test the hypothesis that threat anticipation bias mediates the association between momentary social disconnection and PLEs.

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Background: We aimed to identify therapeutic approaches for managing schizophrenia in different phases and clinical situations - the prodromal phase, first-episode psychosis, cognitive and negative symptoms, pregnancy, treatment resistance, and antipsychotic-induced metabolic side effects - while assessing clinicians' adherence to guidelines.

Methods: A cross-sectional online survey was conducted in 2023 as part of the Ambassador project among psychiatrists and trainees from 35 European countries, based on a questionnaire that included six clinical vignettes (cases A-F). Additionally, a review of multiple guidelines/guidance papers was performed.

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This position paper describes the structural elements of the Polish mental healthcare system, with consideration of both historical and contemporary contexts. The historical context has had a significant impact on the evolution of mental healthcare and treatment of alcohol and substance use disorders (AUD and SUD) in Poland, resulting in notable distinctions between the two systems. Those are evident in the distinct legal foundations, therapeutic traditions (medical vs.

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Background: Loneliness is a global public health concern. Investigating loneliness in the general population offers a greater generalizability across various levels of health-related impairments, the identification of at-risk individuals, the detection of different loneliness severity levels, and broader insights into social determinants. Previous studies have shown that loneliness might be a transient or chronic experience, depending on how consistently it is reported across at least two timepoints.

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This study examines demographic and attitudinal determinants of belief in COVID-19 conspiracy beliefs in Poland and their impact on psychological well-being, social functioning, and adherence to public health measures over one year. A cross-sectional study with a retrospective component was conducted one year after the pandemic outbreak (N = 1000). A COVID-19 conspiracy belief factor, extracted via PCA, served as the dependent variable in hierarchical regression models.

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Background: Borderline personality disorder (BPD) is linked to impairments in white matter (WM) integrity, with traumatic experiences (TE) playing a key role in its development. As TE can affect brain structure, this study examined the parietal-prefrontal WM pathway, focusing on the superior longitudinal fasciculus (SLF), the longest association bundle, to explore WM integrity impairments and their link to BPD symptoms.

Methodology: The study included 90 women (47 with BPD, 43 healthy controls).

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Background: Psychotic-like experiences (PLEs) are potential transdiagnostic markers of psychopathology. However, temporal patterns of associations between PLEs and other symptoms remain unclear. Moreover, it needs to be clarified as to whether PLEs might be primary targets for interventions.

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Background: Psychopathological symptoms appear important for cognitive functions in schizophrenia. Nevertheless, the factors and their impact on relationships between negative or disorganization symptoms and verbal fluency are still debatable. The preliminary objective of the study was to compare verbal fluency, including clustering and switching as cognitive strategies, executive functions, and processing speed between individuals with schizophrenia (SZ) and healthy controls (HC).

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Article Synopsis
  • - The text reviews research on the brain structures related to impulsivity in individuals with borderline personality disorder (BPD) and attention deficit hyperactivity disorder (ADHD), utilizing systematic searches of multiple databases and analyzing 23 studies with nearly 1,000 participants.
  • - It highlights that while both disorders exhibit impulsivity as a common symptom, the neurobiological roots are distinct; BPD shows abnormalities mainly in the prefrontal cortex and limbic areas, while ADHD is linked to changes in the caudate nucleus and frontal-striatal pathways.
  • - The findings underscore the need for further research to explore these differing brain structures related to impulsivity, which could have important implications for tailoring treatment strategies for each disorder. *
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Psychotic-like experiences (PLEs) are low-intensity subclinical phenomena, often transient in nature. The etiology of PLEs primarily involves neurodevelopmental changes, trauma exposure, and maladaptive coping styles. Attention-Deficit/Hyperactivity Disorder (ADHD) is considered to be one of the factors that increase the risk of future psychosis.

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Objective: To identify the COVID-19 pandemic impact on well-being/mental health, coping strategies, and risk factors in adolescents worldwide.

Method: This study was based on an anonymous online multi-national/multi-language survey in the general population (representative/weighted non-representative samples, 14-17 years of age), measuring change in well-being (World Health Organization-Five Well-Being Index [WHO-5]/range = 0-100) and psychopathology (validated composite P-score/range = 0-100), WHO-5 <50 and <29, pre- vs during COVID-19 pandemic (April 26, 2020-June 26, 2022). Coping strategies and 9 a priori- defined individual/cumulative risk factors were measured.

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The aim of this study was to investigate the relationship between gut microbiota and major depressive disorder (MDD) and schizophrenia (SCZ) by comparing 36 inpatients with these conditions to 29 healthy controls (HC) matched for age, sex, and body mass index (BMI). Individuals with SCZ exhibited greater microbiota richness compared to HC (FDR P(Q)=0.028).

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Article Synopsis
  • The COH-FIT study is a large, multi-country survey aimed at identifying factors affecting wellbeing and mental health outcomes during the COVID-19 pandemic, involving a representative sample of 121,066 adults.
  • Researchers analyzed both modifiable (like coping strategies and pre-pandemic stress) and non-modifiable factors (such as age, gender, and socioeconomic status), finding significant negative effects on wellbeing and psychopathology scores during the pandemic.
  • The study identified 15 modifiable and 9 non-modifiable risk factors, alongside 13 modifiable and 3 non-modifiable protective factors, emphasizing the importance of social support and coping strategies in mental health outcomes.
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Article Synopsis
  • There is a lack of comprehensive international studies examining multidimensional mental health and wellbeing before and during the COVID-19 pandemic, particularly identifying at-risk groups and effective coping strategies.
  • The COH-FIT survey, conducted from April 2020 to June 2022 in 30 languages, assessed changes in well-being and psychopathology among over 121,000 participants, revealing significant declines in mental health during the pandemic.
  • Key findings indicated that certain demographics, such as young adults and people in low-income countries, were particularly affected, while coping strategies like exercise, internet use, and maintaining social contacts emerged as the most effective for managing stress.
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Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis has been implicated in the development of psychosis and subthreshold psychotic symptoms commonly referred to as psychotic-like experiences (PLEs). The exact mechanisms linking the HPA axis responses with the emergence of PLEs remain unknown. The present study aimed to explore real-life associations between stress, negative affect, salivary cortisol levels (a proxy of the HPA axis activity) as well as PLEs together with their underlying cognitive biases (i.

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Depression is a heterogenous diagnostic construct; however, dynamic interactions between specific depressive symptoms across their qualitatively different profiles remain largely unknown. The study aimed to recognize the most prevalent profiles of depressive symptoms and assess their dynamics in young adults without a history of psychiatric treatment. Depressive symptoms were recorded using the Patient Health Questionnaire-9 (PHQ-9).

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Objectives: Evidence suggests that decreased dopamine secretion in mesocorticolimbic pathways could predispose to increased susceptibility to substance addiction. It has been proposed to define such a phenomenon as the reward deficit syndrome (RDS). Dopaminergic projections of the reward system receive glutaminergic projections from cortex.

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The Polish standard of treatment with racemic ketamine for patients with depressive disorders was developed by a Working Group appointed by the National Consultant in the field of psychiatry. Despite the wide range of available medications, as many as one-third of depressed patients do not respond to standard antidepressant treatment, raising the need for an ongoing search for new effective and safe therapies. In recent years, the possible role of overactivity of the glutamatergic system in the etiopathogenesis of depression has again attracted the attention of many experts.

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Background: Several studies have shown that social isolation and loneliness are associated with the occurrence of psychotic experiences. However, dynamics of these phenomena in people with subclinical experiences, commonly referred to as psychotic-like experiences (PLEs), remains largely unknown. Therefore, in this study we performed a temporal network analysis to model dynamic predictions between social isolation, loneliness, negative affect, social stress, and PLEs.

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Background: There is conflicting evidence on impulsivity and its potential relationship with inhibitory control in schizophrenia. This study therefore aimed to identify differences in impulsivity and cognitive and motor inhibition between patients with deficit (DS) and non-deficit (NDS) schizophrenia and healthy controls (HC). We also explored the relationships between impulsivity and different dimensions of inhibitory control in all studied groups.

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Introduction: The etiology of schizophrenia (SCZ), an incredibly complex disorder, remains multifaceted. Literature suggests the involvement of oxidative stress (OS) in the pathophysiology of SCZ.

Objectives: Determination of selected OS markers and brain-derived neurotrophic factor (BDNF) in patients with chronic SCZ and those in states predisposing to SCZ-first episode psychosis (FP) and ultra-high risk (UHR).

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Background: Schizophrenia is associated with chronic subclinical inflammation and decreased integrity of the corpus callosum (CC). Our previous study showed associations between peripheral IL-6 levels and the integrity of the CC. Epigenetic studies show associations between methylation of the genes related to immunological processes and integrity of the CC.

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Adverse childhood experiences (ACEs) are a well-known risk factor of schizophrenia. Moreover, individuals with schizophrenia are likely to use maladaptive stress coping strategies. Although it has been reported that a history of ACEs might be associated with a pro-inflammatory phenotype in patients with schizophrenia, the interacting effect of coping styles on this association has not been tested so far.

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Article Synopsis
  • A study looked at how doctors in Europe treat people with post-traumatic stress disorder (PTSD) because there are more traumatic events happening recently.
  • Out of 611 doctors, most recommended using antidepressants like sertraline, but there were differences in medicine choices based on where the doctors were from in Europe.
  • The findings show that while many doctors agree on treatment methods, differences in practice suggest that more communication and education are needed to follow treatment guidelines better across Europe.
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