相关实验视频

Updated: Sep 20, 2025

Olfactory Assays for Mouse Models of Neurodegenerative Disease

Olfactory Assays for Mouse Models of Neurodegenerative Disease

Published on: August 25, 2014

人工智能基于嗅觉的帕金森病诊断模型,使用耳道分泌物中的挥发性有机化合物

Xing Chen¹, Yi Li¹, Chenying Pan¹

¹Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China.

Analytical chemistry

|May 28, 2025

概括

这项研究确定了耳道分泌物 (ECS) 中的特定挥发性有机化合物 (VOC) 作为帕金森病的生物标志物.

科学领域:

生物化学生物化学
神经科学是一个神经科学.
分析化学分析化学

背景情况:

帕金森病 (PD) 是一种流行的神经退行性疾病,需要早期诊断.
目前的PD诊断方法可能具有侵入性或缺乏敏感性.
生物样本中的挥发性有机化合物 (VOC) 具有作为非侵入性生物标志物的潜力.

研究的目的:

开发一种新的帕金森病 (PD) 诊断模型.
在耳道分泌物 (ECS) 中识别特定的VOC生物标志物用于PD检测.
通过集成的传感器和机器学习技术来提高PD诊断的准确性.

主要方法:

气色谱-质谱法 (GC-MS) 用于分析来自PD和非PD患者的ECS样本中的VOC.
鉴定出四种挥发性有机物 (乙,4-乙,,和2-甲基-1,3-二氧化) 是重要的生物标志物.
开发了一种综合气色谱-表面声波传感器 (GC-SAW) 和卷积神经网络 (CNN) 的诊断模型.

主要成果:

在PD和非PD组之间观察到VOC概况的统计学上显著差异.
鉴定到的VOC生物标志物在对PD患者进行分类方面表现出强大的能力.
该GC-SAW-CNN模型在PD检测方面实现了高达94.4%的诊断准确性.

结论:

特定的ECS中的VOC可以作为帕金森病诊断的可靠生物标志物.
集成的GC-SAW-CNN方法为PD检测提供了一个高度准确和高效的方法.
这项技术有望成为PD的新型,非侵入性床边诊断设备.

更多相关视频

A Free-breathing fMRI Method to Study Human Olfactory Function

A Free-breathing fMRI Method to Study Human Olfactory Function

Published on: July 30, 2017

Author Spotlight: Exploring Olfactory Influences on Corticospinal Excitability - Insights and Innovations in Neurological Research

Author Spotlight: Exploring Olfactory Influences on Corticospinal Excitability - Insights and Innovations in Neurological Research

Published on: January 19, 2024

相关概念视频

Olfaction

Olfaction

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...

Physiology of Smell and Olfactory Pathway

Physiology of Smell and Olfactory Pathway

Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...

Olfactory Receptors: Location and Structure

Olfactory Receptors: Location and Structure

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...