生物标志物 生物标志物
Qu Tian1, Erin E Greig1, Susan M Resnick2
1National Institute on Aging, Baltimore, MD, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
血中的某些斯芬戈米林和糖胺介导人体的嗅觉与他们的认知和运动功能之间的联系. 这表明脂质在与年龄相关的衰退和神经退行性疾病中起作用.
科学领域:
- 生物化学 生物化学
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 嗅觉缺陷是与年龄相关的认知和运动能力下降以及阿尔茨海默氏症和帕金森氏症等神经退行性疾病的早期指标.
- 将嗅觉与这些衰退联系在一起的机制尚未完全理解.
- 血脂可能会影响鼻腔粘膜脂质,影响嗅觉神经功能.
研究的目的:
- 调查血脂是否调解嗅觉和认知/运动障碍和功能之间的关系.
- 探索与年龄相关的功能衰退背后的潜在机制.
主要方法:
- 分析了来自巴尔的摩长度衰老研究 (BLSA) 的656名参与者.
- 用质谱测量等离子体脂质,并将其分为六个类别.
- 嗅觉,认知功能和运动能力使用标准化测试 (嗅探棒,神经心理电池,步行速度) 进行评估.
主要成果:
- 特定的非常长链和长链甘基胺和基胺与嗅觉,认知和移动性有积极联系.
- 斯芬哥米林显著调解了嗅觉和注意力,手工敏捷性,口头记忆和各种移动性测量 (高达29.4%) 之间的关联.
- 葡萄糖胺还调解了与注意力,快速步行速度和400米步行时间 (高达11%) 的关联.
结论:
- 斯芬戈米林和甘基胺在嗅觉,认知和移动性之间的关系中起到调解作用.
- 这些发现凸显了鼻腔粘膜中的脂质代谢在与年龄相关的功能衰退中的潜在作用.
- 建议进行进一步的纵向研究来证实这些横截面发现.
相关概念视频
01:20Blood Studies for Cardiovascular System I: Cardiac Biomarkers
749
Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
749
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
516
Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
516