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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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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
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Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
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基础科学和病原发生学

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此摘要是机器生成的。

遗传和邻居因素共同增加阿尔茨海默病和相关痴呆症 (ADRD) 的风险. 项目响应理论 (IRT) 精确地测量了感知邻居障碍 (PND),揭示了它与不同人群中的APOE ε4的相互作用.

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科学领域:

  • 遗传学和社会流行病学
  • 神经科学是一个神经科学.
  • 公共卫生 公共卫生

背景情况:

  • 阿尔茨海默病和相关痴呆症 (ADRD) 的风险受到遗传和社会因素的影响.
  • 社会因素,如社区特征,可能会改变遗传风险.
  • 项目响应理论 (IRT) 与传统的总和方法相比,提供了一种更精确的方法来构建复合社会因素得分.

研究的目的:

  • 用IRT模型在不同的人群中构建感知邻居障碍 (PND) 评分.
  • 检查PND得分与ADRD中的遗传风险 (APOE ε4) 之间的相互作用.

主要方法:

  • 利用我们所有人的数据集,为非西班牙裔白人 (NHW),黑人或非裔美国人 (AA),西班牙裔和亚洲人 (65岁以上) 创建队列.
  • 将基于IRT的泛化部分信用模型应用于13项的罗斯-米罗夫斯基感知邻居障碍量表,以获得PND分数.
  • 使用后勤回归来评估PND分数和APOE ε4状态与痴呆症的联合关联,调整年龄和性别.

主要成果:

  • 在不同族群中,APOE ε4的患病率有所不同,在AA参与者中 (38%) 患病率最高.
  • 与NHW和亚洲队伍相比,AA和西班牙裔参与者报告了更大的社区安全缺点.
  • 增加的PND得分与更高的痴呆率有关,特别是在具有一个或两个副本APOE ε4的西班牙裔个体中.

结论:

  • 在APOE ε4状态,感知邻居障碍和痴呆风险之间存在显著的联合关联.
  • 未来的研究应该纳入更广泛的社会措施,额外的遗传因素和特定的ADRD亚型,以阐明基因环境相互作用.