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Related Concept Videos

Schizophrenia01:17

Schizophrenia

817
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...
817
Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

531
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...
531
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

491
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...
491
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

488
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,...
488
Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

Positive Symptoms Schizophrenia: Hallucinations and Delusions

510
Schizophrenia is a complex psychiatric disorder characterized by a range of symptoms that significantly impact cognition, behavior, and emotional regulation. Among these, the positive symptoms stand out as they involve the addition or exaggeration of normal mental functions, deviating markedly from typical behavior and perception. Hallucinations and delusions are prominent positive symptoms, each profoundly affecting the individual's experience of reality.
Hallucinations
Hallucinations in...
510
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

575
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...
575

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Developing zebrafish experimental animal models relevant to schizophrenia.

Konstantin A Demin1, Darya A Meshalkina2, Andrey D Volgin3

  • 1Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.

Neuroscience and Biobehavioral Reviews
|August 2, 2019
PubMed
Summary
This summary is machine-generated.

Zebrafish models offer a promising avenue for understanding schizophrenia, a complex psychiatric disorder. Further development of these animal models is crucial for advancing research into schizophrenia pathogenesis and discovering novel antipsychotic treatments.

Keywords:
Negative symptomsPositive symptomsRodent modelsSchizophreniaTranslational researchZebrafish

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Animal Models

Background:

  • Schizophrenia is a severe psychiatric disorder impacting 1% of the global population with poorly understood pathobiology.
  • Translational research is essential for advancing schizophrenia understanding and treatment.
  • Experimental animal models are increasingly vital for studying schizophrenia phenotypes and drug efficacy.

Purpose of the Study:

  • To review the utility of zebrafish (Danio rerio) as a model organism for schizophrenia research.
  • To discuss current progress and challenges in applying zebrafish models to schizophrenia.
  • To highlight the need for further development and adoption of zebrafish models in schizophrenia studies.

Main Methods:

  • Literature review of studies utilizing zebrafish to model schizophrenia-related phenotypes.
  • Analysis of zebrafish genetic and physiological homology to humans.
  • Evaluation of zebrafish sensitivity to psychotropic medications relevant to schizophrenia.

Main Results:

  • Zebrafish exhibit complex behaviors and possess significant genetic/physiological homology to humans, making them suitable for modeling schizophrenia.
  • Zebrafish are sensitive to drugs affecting schizophrenia, supporting their use in preclinical studies.
  • Existing research demonstrates the potential of zebrafish in studying schizophrenia-related behaviors and drug responses.

Conclusions:

  • Zebrafish represent a valuable tool for modeling schizophrenia and advancing our understanding of its underlying mechanisms.
  • Continued development and broader application of zebrafish models are necessary for identifying new therapeutic strategies for schizophrenia.
  • Further research using zebrafish can significantly contribute to the discovery of more effective antipsychotic medications.