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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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Urinary Tract Infection II: Pathophysiology01:25

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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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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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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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基础科学和病原发生学

Joong-Seok Kim1, Hyuk-Je Lee1, Bora Yoon1

  • 1The Catholic University of Korea, Seoul, NA, Korea, Republic of (South).

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PubMed
概括
此摘要是机器生成的。

这项研究报告了一例罕见的认知衰退病例,该病例发生在一名75岁的老人身上,该老人患有PSEN2和SLC20A2基因的新型双重突变. 这一发现促进了对痴呆症和大脑化的遗传原因的理解.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 放射学 放射学是一门学科.

背景情况:

  • 自体主导性阿尔茨海默病 (ADAD) 和初级家族性脑化 (PFBC) 是一种罕见的遗传性疾病,导致认知能力下降.
  • 一名75岁的男性出现记忆障碍,表现出基底腺结石化,白质超强度和粉样蛋白沉积在脑图像上.

研究的目的:

  • 为了调查临床,放射和遗传的认知衰退的基础,在一个病人与异常的大脑成像发现.
  • 识别可能导致观察到的神经表现的遗传变异.

主要方法:

  • 神经成像包括18F-Florbetaben PET/CT用于粉样蛋白评估和MRI用于白质变化和微血.
  • 用于成像分析,使用标准化尺度,将PET SUVR值转换为Centiloid尺度.
  • 对1,097个与痴呆症相关的基因进行了下一代测序,以确定遗传变异.

主要成果:

  • 观察到大量的粉样质斑沉积 (Centiloid 98.3) 和密集的矿物沉积,表明PFBC或甲状腺功能障碍.
  • 核磁共振扫描显示了中叶缩,严重的白质强度过高和脑微出血.
  • 基因分析发现了可能的致病性SLC20A2突变和未知意义的PSEN2变异.

结论:

  • 这一案例是首次记录出PSEN2和SLC20A2突变组合的案例.
  • 鉴定的遗传变异可能与患者的认知能力下降和大脑化有关.