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Related Concept Videos

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.
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.
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...
Psychosis and Antipsychotic Drugs: Overview01:28

Psychosis and Antipsychotic Drugs: Overview

The term "psychosis" refers to a spectrum of mental disorders characterized by abnormal thoughts, perceptions, and behaviors. It can manifest as mood disorders, dementia, delirium with psychotic features, substance-induced psychosis with psychotic features, brief psychotic disorder, delusional disorder, schizoaffective disorder, and schizophrenia. Among all these disorders, schizophrenia is the most common psychotic disorder, affecting 1% of the worldwide population. Psychotic symptoms in all...
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
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...

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Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
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Testosterone in first-episode schizophrenia.

Eva Cesková1, Radovan Prikryl, Tomás Kaspárek

  • 1Department of Psychiatry, Masaryk University and Faculty Hospital Brno, Czech Republic. eceska@med.muni.cz

Neuro Endocrinology Letters
|December 8, 2007
PubMed
Summary

In first-episode schizophrenia, testosterone levels did not correlate with symptom severity or treatment response. However, some patients showed altered psychoendocrinology, potentially indicating vulnerability to negative symptoms.

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Area of Science:

  • Neuroendocrinology
  • Psychiatry
  • Schizophrenia Research

Background:

  • Emerging evidence links gonadal hormones to schizophrenia pathophysiology.
  • Low testosterone is associated with negative symptoms in chronic schizophrenia.
  • The role of testosterone in first-episode schizophrenia remains unclear.

Purpose of the Study:

  • To investigate the association between testosterone levels, symptoms, and drug response in male patients with first-episode schizophrenia.
  • To differentiate findings from chronic schizophrenia by excluding effects of age, chronicity, and long-term treatment.
  • To conduct a naturalistic, open-label study.

Main Methods:

  • 68 males with first-episode schizophrenia were assessed using the Positive and Negative Syndrome Scale (PANSS) on admission and at discharge.
  • Plasma total testosterone levels were measured using chemiluminescent immunoanalysis (CMIA).
  • Patients received open-label monotherapy, primarily risperidone, with treatment response defined by PANSS score changes.

Main Results:

  • PANSS scores significantly decreased during acute treatment.
  • Mean testosterone levels were within the normal range (5.76–30.43 nmol/l) for males <50 years old, both before and after treatment.
  • No significant correlation was found between testosterone levels and negative symptoms or treatment response.

Conclusions:

  • No significant association between total testosterone levels and symptoms or treatment response was observed during the initial psychotic episode.
  • Schizophrenia is heterogeneous; some first-episode patients exhibit altered psychoendocrinology.
  • These patients may be at higher risk for persistent negative symptoms, suggesting a potential role for neuroendocrinology-guided pharmacotherapy.