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Related Concept Videos

Schizophrenia01:17

Schizophrenia

1.0K
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...
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Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

663
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...
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Attachment of Sister Chromatids02:57

Attachment of Sister Chromatids

4.1K
As cells progress into mitosis, the nuclear envelope breaks down, and the condensed chromosomes are exposed to the array of bipolar microtubules of the mitotic spindle. The kinetochore, a large, disc-shaped protein complex, is present at the centromere region of the sister chromatids and acts as a binding site for the microtubules.  Usually, the plus-end of a single microtubule is embedded within the kinetochore. However, some kinetochores first establish lateral contact with the side-wall...
4.1K
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

4.6K
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
4.6K
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

650
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...
650
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

637
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,...
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Reconstitution of Nucleosomes with Differentially Isotope-labeled Sister Histones
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Reconstitution of Nucleosomes with Differentially Isotope-labeled Sister Histones

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[Schizophrenia in half-sisters].

H Ueki, K Sone

    Fortschritte Der Neurologie-Psychiatrie
    |June 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    This study explores schizophrenia in half-siblings, finding distinct family dynamics and premorbid traits influence illness onset. It identifies pathological and protective factors in affected individuals.

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    Area of Science:

    • Psychiatry
    • Genetics
    • Family Studies

    Background:

    • Schizophrenia's etiology is complex, with limited understanding of its manifestation in half-sibling relationships.
    • Investigating familial patterns in schizophrenia is crucial for understanding genetic and environmental influences.

    Observation:

    • The study examined a family with six half-siblings, where three developed schizophrenic disorders.
    • Psychodynamic and psychosocial perspectives were used to analyze family environment and premorbid characteristics.

    Findings:

    • The research identified specific conditions and psychoreactive factors contributing to schizophrenia onset or relapse in half-siblings.
    • Comparisons between schizophrenic and non-schizophrenic half-siblings highlighted differences in mental development and personal relationships.
    • Both pathological and protective factors influencing the illness were elucidated.

    Implications:

    • Findings suggest that family environment and individual premorbid characteristics play significant roles in schizophrenia development among half-siblings.
    • Understanding these factors can inform targeted interventions and support strategies for at-risk individuals.
    • Further research into familial patterns of schizophrenia is warranted to refine etiological models.