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相关概念视频

Infection01:20

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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
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基础科学和病原发生学

Eden R Martin1,2, Anthony J Griswold1,2, Farid Rajabli1,2

  • 1Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA.

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PubMed
概括
此摘要是机器生成的。

在轻度认知障碍 (MCI) 个体中估计阿尔茨海默氏病 (AD) 的概率可以加强遗传关联研究. 对MCI患者的"病例性"的归因提高了统计能力,有助于发现AD与AD的遗传联系.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.
  • 生物统计学 生物统计学

背景情况:

  • 阿尔茨海默病 (AD) 遗传研究通常会因为诊断不确定性而排除轻度认知障碍 (MCI) 患者.
  • 这种排除可能会限制检测AD发展相关的遗传关联的能力.

研究的目的:

  • 开发和验证一种方法来估计MCI个体中AD转换的概率.
  • 通过将MCI个体与疾病概率估计纳入病例控制研究来增强遗传关联分析.

主要方法:

  • 提出了一种多步骤的方法:1. 确定AD的预测模型,使用已确定的AD病例和认知不受损 (CU) 控制的逻辑回归. 2. 2. 2. 这是一个很棒的节目. 使用此模型估计MCI个体的AD概率 (pi). 3. 3. 3. 3. 这是一件很棒的事情. 通过值 (pi > t) 或概率再抽样,将MCI个体纳入遗传关联测试中.
  • 在1420名参与者 (448名AD,714名CU,258名MCI) 中,APOE-e4等位基因与AD的关联被评估为原则证明.

主要成果:

  • 在AD病例与CU对照中对APOE-e4的基准分析产生了3.25的几率比率 (OR) (Z=9.088).
  • 包括所有MCI个体,因为病例将OR降至1.97 (Z=6.628).
  • 结合临床,人口和生物标记数据 (pTau-181,CDR记忆得分,年龄,性别) 的值模型 (t=0.8) 通过添加24名MCI个体作为可能病例,轻微改善了测试统计数据 (OR=3.22,Z=9.174). 再抽样方法的效果不如值方法.

结论:

  • 临床,人口和生物标志物数据可以有效地将MCI个体的疾病概率 ("发生率") 归因于遗传关联研究.
  • 即使是少数被归咎为MCI病例,也显著改善了统计测试的性能.
  • 这种归算策略有望在更大的阿尔茨海默病数据集中增强遗传发现.