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Long-term Depression01:05

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term Depression01:03

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
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Freezing Point Depression and Boiling Point Elevation03:12

Freezing Point Depression and Boiling Point Elevation

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Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
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Depressants01:28

Depressants

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Depressant drugs, including alcohol and sedative-hypnotics, diminish central nervous system activity by enhancing the action of gamma-aminobutyric acid (GABA), a neurotransmitter that reduces brain activity and promotes relaxation. These substances can have various therapeutic uses but also pose significant risks, especially when misused or combined.
Alcohol is a common depressant that can induce a sense of relaxation and reduced inhibition at low doses. Contrary to its occasional...
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Depression: Overview01:18

Depression: Overview

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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
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Updated: Feb 3, 2026

The Forced Swim Test as a Model of Depressive-like Behavior
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うつ病

Gin S Malhi1, J John Mann2

  • 1Department of Academic Psychiatry, Sydney Medical School Northern, University of Sydney, Sydney, NSW, Australia; CADE Clinic, Royal North Shore Hospital, Sydney, NSW, Australia.

Lancet (London, England)
|November 7, 2018
PubMed
まとめ
この要約は機械生成です。

重度のうつ病は日常生活に大きく影響し 世界的な健康問題となっています 早期発見と効果的な治療は 患者の治療結果を改善し 病気の負担を軽減するために不可欠です

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関連する実験動画

Last Updated: Feb 3, 2026

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The Forced Swim Test as a Model of Depressive-like Behavior

Published on: March 2, 2015

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A New Method for Inducing a Depression-Like Behavior in Rats
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科学分野:

  • 精神科 と 精神 保健
  • 世界保健疫学

背景:

  • 重度のうつ病は,心理的社会機能と生活の質に大きな影響を与える一般的な精神的健康障害です.
  • 世界保健機関 (WHO) は2008年に 鬱病を 世界疾病の第3の 主な原因と特定し 2030年までに 主な原因になると予測しています
  • 重度のうつ病の管理に伴う臨床的課題は 症状の多様性,予測不可能な経路,治療への反応の変動から生じます

研究 の 目的:

  • 深刻な鬱病が世界全体に及ぼす 深刻な負担を強調するためです
  • 重度のうつ病の検出,診断,治療に伴う臨床的複雑性を強調する.
  • 重度のうつ病に対処する戦略の改善の必要性を強調する.

主な方法:

  • この要約は,既存の文献と世界保健データのレビューに基づいています.
  • 世界保健機関 (WHO) の報告と疫学予測の分析
  • 重度のうつ病の発現と管理に関する臨床観察

主要な成果:

  • 重度のうつ病は 世界中で障害の主要な原因です
  • 病気の負担は2030年までに大幅に増加すると予測されています.
  • 臨床医は うつ病の多面性によって 課題に直面します

結論:

  • 重度のうつ病は 緊急に注意が必要な 世界的な健康問題です
  • 診断と治療の障害を克服するには 効果的な臨床戦略が必要です
  • 大うつ病の治療は公衆の健康と生活の質の改善に不可欠です