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Dissociative Disorders01:27

Dissociative Disorders

Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
Bipolar Disorder01:30

Bipolar Disorder

Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.
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,...
Personality Disorders: Paranoid and Schizoid01:22

Personality Disorders: Paranoid and Schizoid

Personality disorders represent enduring cognition, affect, and behavior patterns that significantly deviate from societal norms. These maladaptive traits often lead to difficulties in various domains, including interpersonal relationships, occupational settings, and overall psychological well-being. Paranoid personality disorder and schizoid personality disorder are two distinct conditions marked by odd or eccentric behavior.
Paranoid Personality Disorder
Paranoid personality disorder is...
Personality Disorders: Schizotypal and Histrionic01:20

Personality Disorders: Schizotypal and Histrionic

Schizotypal personality disorder and histrionic personality disorder are two distinct psychological conditions classified under personality disorders, each characterized by unique behavioral patterns and social difficulties. Both disorders significantly affect interpersonal relationships and emotional well-being, leading to social isolation and frustration.
Schizotypal Personality Disorder: Eccentric Behavior and Social Withdrawal
Schizotypal personality disorder is marked by odd or eccentric...
Borderline Personality Disorder01:25

Borderline Personality Disorder

Borderline Personality Disorder is a complex and multifaceted mental health condition characterized by pervasive instability in interpersonal relationships, self-image, emotions, and impulse control. This instability manifests in extreme emotional reactions, fear of abandonment, and self-destructive behaviors. The disorder significantly impacts daily functioning, often leading to distress in both personal and professional domains.
Genetic and Environmental Contributions
Borderline Personality...

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Updated: Jun 24, 2026

Purification of Fibroblasts and Schwann Cells from Sensory and Motor Nerves in Vitro
08:16

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Published on: May 20, 2020

統合失調症と双極性障害におけるオリゴデンドロサイト機能障害

Dmitri Tkachev1, Michael L Mimmack, Margaret M Ryan

  • 1Department of Neurobiology, Babraham Institute, Cambridge, UK.

Lancet (London, England)
|September 19, 2003
PubMed
まとめ

統合失調症と双極性障害の脳では,オリゴデンドロサイトとミエリン遺伝子の発現が低下しています. これらの発見は,共有された経路が両方の状態に寄与することを示唆しています.

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科学分野:

  • 神経科学は神経科学である.
  • 遺伝学 遺伝学とは
  • 精神科医は精神病を患っている.

背景:

  • 以前の配列研究は,統合失調症における脂質およびミエリン関連遺伝子の異常発現を示した.
  • オリゴデンドロ細胞の機能とミエリン化は,脳の健康に不可欠であり,精神疾患に関与されている.

研究 の 目的:

  • 統合失調症と双極性情動障害におけるオリゴデンドロサイト特異的およびミエリン化関連遺伝子発現を調査する.
  • 統合失調症,双極性障害,および制御脳間の遺伝子発現パターンを比較するために.

主な方法:

  • スタンレー・ブレイン・コレクションから採取した脳サンプル (15人の統合失調症,15人の双極性障害,15人の対照群) を利用した.
  • 遺伝子発現の差異の初期スクリーニングのために,インデックスベースのディフェンシャルディスプレイPCRを使用.
  • 定量PCRとマイクロアレイ分析を用いて16の追加のオリゴデンドロサイトとミエリン遺伝子を検証し,評価した.

主要な成果:

  • 重要なオリゴデンドロサイト関連およびミエリン関連遺伝子の有意な減少が,統合失調症と双極性障害の両方の患者で,対照群と比較して示されました.
  • 統合失調症と双極性障害の間の表現変化の重複の高い程度が観察されました.
  • 定量PCRとマイクロアレイの分析は,研究された遺伝子の良好な相関性を示しました.

結論:

  • 統合失調症と双極性障害の脳は,規制的な転写因子を含む,重要なオリゴデンドロサイトとミエリン化遺伝子のダウンレギュレーションを示しています.
  • これらの発見は,以前のマイクロアレイベースの観測を裏付け,拡張しています.
  • 双極性障害の脳における共通の遺伝子発現の変化は,統合失調症との共通の病理生理学的経路を示唆しています.