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相关概念视频

Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

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The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
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Olfaction01:25

Olfaction

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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
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Olfactory Neurons Obtained through Nasal Biopsy Combined with Laser-Capture Microdissection: A Potential Approach to Study Treatment Response in Mental Disorders
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神经成像和转录基因洞察铁积累和嗅觉功能障碍中的淋巴功能障碍.

Chantat Leong1,2, Jixin Luan3,4, Ruisi Wang1

  • 1Centre for Cognitive and Brain Sciences, University of Macau, Macau SAR, China.

CNS neuroscience & therapeutics
|January 16, 2026
PubMed
概括
此摘要是机器生成的。

嗅觉功能障碍涉及异常的铁积累和大脑液流的变化. 加强大脑清洁和神经修复可能有助于患者恢复,提供新的诊断和恢复标记.

关键词:
大脑脊髓液的流动功能性核磁共振成像 (MRI) 的功能性核磁共振成像基因表达的基因表达方式淋巴体功能 淋巴体功能铁的积累 铁的积累嗅觉功能障碍 嗅觉功能障碍定量敏感性映射测绘 定量敏感性映射

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科学领域:

  • 神经成像是一种神经成像.
  • 神经生物学 神经生物学 神经生物学
  • 文字转录学 (Transcriptomics) 是一个学科.

背景情况:

  • 嗅觉功能障碍 (OD) 与炎症和神经毒素有关,但机制尚不清楚.
  • 研究淋巴功能,铁失调和基因表达可能会揭示OD生物标志物.
  • 了解这些因素对于制定恢复战略至关重要.

研究的目的:

  • 探索嗅觉功能障碍的神经生物学基础.
  • 调查淋巴功能,铁失调和转录组变化在过量服用中的作用.
  • 为了确定潜在的生物标志物用于OD诊断和预后.

主要方法:

  • 使用了一种多模式MRI方法,结合了BOLD-CSF合和定量敏感度映射 (QSM).
  • 转录形状分析与QSM集成,以分析铁的积累和基因表达.
  • 从病毒后OD (PVOD),创伤后OD (PTOD) 和健康对照 (HC) 组收集数据.

主要成果:

  • PVOD显示嗅觉记忆区域的铁增加,与神经元组织和信号传递的基因相关.
  • 与对照组相比,PVOD表现出增强的淋巴活动 (更强的BOLD-CSF合)
  • 完全恢复与最强的BOLD-CSF合相关,表明毒素清除得到改善.

结论:

  • 嗅觉功能障碍与异常的铁积累和改变的淋巴功能有关.
  • 转录基因签名表明神经可塑性在过量饮食中起作用.
  • 改善的淋巴清除和神经元重塑可能会促进恢复,提供潜在的生物标志物.