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相关概念视频

Toxic Reactions: Overview01:26

Toxic Reactions: Overview

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When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
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Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

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While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
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Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
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Types of Toxins01:36

Types of Toxins

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Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
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Drugs Affecting Neurotransmitter Synthesis01:29

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Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
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Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

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Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity
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有毒的神经病变 有毒的神经病变

Alexander M Rossor1, Hadi Manji

  • 1Queen Square Centre for Neuromuscular Diseases, National Hospital for Neurology, London, UK.

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此摘要是机器生成的。

免疫疗法,氧化和ciguatera毒素暴露的神经病变并发症正在增加. 早期识别和症状治疗至关重要,需要进一步研究才能找到有效的治疗方法.

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科学领域:

  • 神经学 神经学
  • 毒理学 毒理学 毒理学
  • 免疫学 免疫学 免疫学

背景情况:

  • 免疫疗法和linezolid已经扩大了治疗用途,而娱乐性氧化使用则是全球日益关注的问题.
  • 耐药结核病 (TB) 和因全球变暖而增加的毒素暴露带来了重大的公共卫生挑战.
  • 神经病变是与这些疾病相关的主要疾病,需要专注的临床关注.

研究的目的:

  • 审查当前对免疫疗法,氧化毒性和ciguatera暴露产生的神经病变并发症的理解.
  • 突出早期诊断和管理这些神经疾病的重要性.
  • 强调需要对这些有毒神经病变的机制和治疗进行进一步研究.

主要方法:

  • 关于免疫疗法诱导的神经病变,氧化毒性和ciguatera中毒的最新文献的综述.
  • 对当前指导方针和对这些疾病的临床经验进行分析.
  • 综合有关病理生理学,诊断和管理策略的信息.

主要成果:

  • 免疫检查点抑制剂和氧化引起的神经病变并发症的病理生理学越来越被理解,有可用的指导方针.
  • 已经建立了包括linezolid在内的耐药结核病的最佳治疗方案.
  • 免疫疗法的神经病变并发症很少见,但需要及时识别和治疗.

结论:

  • 与免疫疗法,氧化和ciguatera相关的神经病症需要早期识别和症状管理.
  • 在患有神经病变的患者,特别是年轻人中,应考虑氧化的毒性.
  • 目前尚不充分认识虫毒性,预计随着全球变暖,其患病率将增加,这需要对急性和慢性影响进行进一步研究.