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相关概念视频

Pleiotropy01:33

Pleiotropy

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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
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案例321:李氏综合征的发生

Bilal Hai1, Jonathan Guntin1, Anil G Rao1

  • 1From the Department of Radiology, University of Illinois Hospital and Health Sciences System, 1740 W Taylor St, Chicago, IL 60612.

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概括
此摘要是机器生成的。

这项案例研究强调了一个9个月大的婴儿发育衰退和发作,可能是由于一种罕见的代谢障碍影响大脑功能. 早期诊断和干预对于管理这种神经疾病至关重要.

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科学领域:

  • 儿科神经学 儿科神经学
  • 神经发育障碍 神经发育障碍
  • 代谢障碍 代谢障碍 代谢障碍

背景情况:

  • 一个9个月的早产婴儿表现出2个月的发育回归史,包括失去社交互动和运动技能.
  • 婴儿经历了反复发作,其特点是opisthotonos和cyanosis,以及检查时发现的低血压.

研究的目的:

  • 调查早产婴儿发育衰退和发作的根本原因.
  • 评估神经成像和代谢测试在复杂的儿科神经病例中的诊断效用.

主要方法:

  • 临床病史和体检.
  • 电脑电图 (EEG) 用于评估活动.
  • 脑磁共振成像 (MRI) 用光谱进行结构和代谢评估.
  • 审查过去和最近的实验室发现,包括血清乳酸盐,氨酸和氨酸水平.

主要成果:

  • 脑电图揭示了频繁的双侧形释,表明大脑功能障碍显著.
  • 血清乳酸和氨酸水平持续升高表明存在潜在的代谢障碍.
  • 以前出生时的低素水平,最初归因于其他原因,根据新发现重新评估.

结论:

  • 婴儿的表现表明一种复杂的代谢障碍影响神经发育和功能.
  • 需要进一步的研究,包括先进的代谢和遗传测试,以确定具体的诊断.
  • 在寻求最终诊断的过程中,迅速启动症状治疗,如治疗的拉科萨米德是必不可少的.