新生儿查6个溶酶体储存障碍 通过并列质谱测量
Yao Chen1, Yan Yang2, Yinglin Zeng1
1Medical Genetic Diagnosis and Therapy Center, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China.
Clinical pediatrics
|December 23, 2023
概括
这项研究在新生儿中使用干血斑点 (DBS) 上的双重质谱法 (MS/MS) 确定了6种溶酶体储存疾病 (LSD) 的截止值,从而实现了有效的早期查.
科学领域:
- 生物化学 生物化学
- 遗传学 遗传学 是一个
- 新生儿医学 新生儿医学
背景情况:
- lysosomal存储疾病 (LSDs) 是一组罕见的遗传疾病.
- 早期发现和诊断LSD对于及时干预和改善患者结果至关重要.
- 新生儿查计划对于识别有风险的婴儿至关重要.
研究的目的:
- 在新生儿中选六种特定的溶酶体储存疾病 (LSD).
- 使用双重质谱法 (MS/MS) 确定酶活动的可靠切断值.
- 评估MS/MS在干血斑点 (DBS) 中早期LSD检测方面的有效性.
主要方法:
- 使用双重质谱 (MS/MS) 进行高通量选.
- 分析了来自新生儿的3000个干血点 (DBS) 样本.
- 六种LSD的确定的特定酶活性截止值:GLA,ABG,ASM,IDUA,GALC和GAA.
主要成果:
- 六种酶活动的确定的截止值是:GLA (> 2.06),ABG (> 1.78),ASM (> 0.99),IDUA (> 1.33),GALC (> 0.84) 和GAA (> 2.06) μmol/L·h.
- 最初的查发现了30例阳性病例,15例在重复测试后仍然呈阳性.
- 经过基因分析,一个病例被确认为庞培病 (GAA缺乏症),证明了查的有效性.
结论:
- 双重质谱法 (MS/MS) 是一种有效的方法,用于早期查新生儿的溶酶体储存疾病 (LSD).
- 确定的切线值为这些特定的LSDs新生儿查计划提供了基础.
- 通过MS/MS的早期检测有助于及时诊断和潜在的治疗干预.
相关概念视频
Peptide Identification Using Tandem Mass Spectrometry
6.5K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
6.5K
MALDI-TOF Mass Spectrometry
4.8K
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
4.8K
Mass Spectrometry: Complex Analysis
785
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
785
Lysosomal Hydrolases
3.8K
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
3.8K


