相关实验视频
Updated: May 9, 2025

09:47
Spotting Cheetahs: Identifying Individuals by Their Footprints
Published on: May 1, 2016
14.7K
在一家患有I型遗传性血管的家庭中,识别出一种难以捉摸的SERPING1删除,使用软剪切
Keith Wetherby1, Joseph Chiao1, Emily Faulkner1
1Virant Diagnostics, Inc., Wheaton, MD, United States.
Frontiers in allergy
|May 2, 2025
概括
在一家患有遗传性血管 (HAE) 的家庭中发现了SERPING1基因的新型缺失,尽管标准遗传测试呈阴性. 这一发现强调了先进技术的重要性,例如软剪切分析用于诊断HAE.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 遗传性血管 (HAE) 是由SERPING1突变引起的遗传性疾病,导致布拉迪基宁的过度生产和胀.
- 像DNA测序和MLPA这样的标准遗传测试往往无法检测大约5%的HAE患者的致病变体.
- 这项研究研究了一家患有HAE型I的家庭,他们以前对SERPING1突变的遗传测试结果呈负值.
研究的目的:
- 为了确定以前未被发现的SERPING1突变的家族中HAE的遗传原因.
- 评估先进生物信息技术在诊断HAE时的有用性.
- 改进对HAE病例的诊断策略,以负面的标准基因检测.
主要方法:
- 整个外体序列和SERPING1多重结合依赖探头放大 (MLPA) 在家族成员上进行.
- 一种称为软剪切的生物信息技术被纳入了变异分析管道.
- 桑格测序被用于确认已识别的删除.
主要成果:
- 下一代测序 (NGS) 和MLPA没有检测到任何致病性SERPING1变异或重排.
- 软切割分析显示,在 SERPING1 exon 6 中,软切割率很高.
- 在所有受影响的受试者中,确定了跨越SERPING1的3'外因子-内因子边界的异构56基对删除.
结论:
- 标准的遗传检测方法可能会错过某些大的删除,特别是那些在外子-内子边界.
- 将软剪切分析纳入诊断工作流程可以帮助检测以前未被识别的HAE引起变异.
- 这种系统的方法可以提高诊断产出5%的HAE病例怀疑遗传原因,但负面标准测试结果的诊断产出.
更多相关视频
07:40A Noninvasive Hair Sampling Technique to Obtain High Quality DNA from Elusive Small Mammals
Published on: March 13, 2011
20.7K
09:04Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow
Published on: April 18, 2019
12.3K
相关概念视频
Tip-of-the-Tongue Phenomenon
61
The tip-of-the-tongue (TOT) phenomenon is a cognitive experience characterized by a temporary inability to retrieve specific information from memory despite having a strong feeling of knowing the information. Although individuals cannot access the target word or detail, they frequently recall related elements, such as its initial letter, syllable count, or context. This partial retrieval often causes frustration, as one might recognize a familiar face or know that a name starts with a specific...
61
Deindividuation
26.0K
Deindividuation is a form of social influence on an individual’s behavior such that the individual engages in unusual or non-normal behavior while in a group setting. Why? Because in these group settings, the individual no longer sees themselves as an individual anymore, disinhibiting their behavior and personal restraint.
26.0K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
172
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
172
Mass Spectrum: Interpretation
1.0K
An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a low-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.
To...
To...
1.0K