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Related Concept Videos

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes loosely...
Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
Schizophrenia01:17

Schizophrenia

Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those diagnosed.
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...

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Related Experiment Video

Updated: Jun 20, 2026

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
05:14

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra

Published on: September 8, 2021

Atypical lymphocytes in schizophrenia.

R L Lahdelma1, H Katila, M Hirata-Hibi

  • 1Department of Psychiatry, University of Helsinki, 00530 Helsinki, Finland.

European Psychiatry : the Journal of the Association of European Psychiatrists
|August 25, 2009
PubMed
Summary
This summary is machine-generated.

Schizophrenia patients showed distinct lymphocyte changes, with more Downey type III cells and fewer Downey type I cells compared to controls. These findings suggest potential immunological aberrations in a subgroup of schizophrenia patients.

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Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
05:52

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis

Published on: November 21, 2013

Related Experiment Videos

Last Updated: Jun 20, 2026

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
05:14

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra

Published on: September 8, 2021

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
05:52

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis

Published on: November 21, 2013

Area of Science:

  • Immunology
  • Psychiatry
  • Cell Biology

Background:

  • Schizophrenia is a complex psychiatric disorder with potential links to immune system dysregulation.
  • Previous research suggests immunological aberrations may play a role in schizophrenia pathogenesis.
  • Identifying specific cellular markers could help understand schizophrenia subtypes and immune involvement.

Purpose of the Study:

  • To investigate morphological differences in lymphocyte subtypes between schizophrenia patients and healthy controls.
  • To assess if neuroleptic treatment alters lymphocyte morphology in schizophrenia patients.
  • To explore the potential of specific lymphocyte types as biomarkers for schizophrenia-related immunological alterations.

Main Methods:

  • Blood samples were collected from 18 schizophrenia patients and 15 healthy controls before and after neuroleptic treatment.
  • Lymphocytes were isolated, stained with MGG solution, and examined via light microscopy.
  • Lymphocytes were classified into six types, with atypical lymphocytes further categorized by size.

Main Results:

  • Schizophrenia patients exhibited significantly higher counts of medium-sized Downey type III atypical lymphocytes before treatment (p = 0.019).
  • Patients also showed significantly lower counts of small Downey type I atypical lymphocytes after treatment (p = 0.026).
  • These morphological differences suggest specific lymphocyte alterations associated with schizophrenia.

Conclusions:

  • The study supports the hypothesis of immunological aberrations in a subgroup of schizophrenia patients.
  • Morphological analysis of lymphocytes identified specific cell types that may be involved in schizophrenia-related immune alterations.
  • These findings warrant further investigation into the role of specific lymphocyte subtypes in schizophrenia pathophysiology.