血红蛋白E的分子表征
Sara Ejaz1, Ghulam Mustafa1, Shagufta Khaliq2
1Department of Haematology, University of Health Sciences, Lahore, Pakistan.
JPMA. The Journal of the Pakistan Medical Association
|December 12, 2023
概括
这项研究使用分子方法检测出高血红蛋白A2水平的患者经常错过的血红蛋白E突变. 这些发现强调了需要先进的分子诊断来准确识别血红蛋白病变.
科学领域:
- 血液学 血液学 血液学
- 分子生物学分子生物学
- 遗传诊断 遗传诊断 遗传诊断 是一个
背景情况:
- 高性能液体染色学 (HPLC) 可以误解与血红蛋白A2 (HbA2) 共同排泄的血红蛋白E (HbE).
- 升高的HbA2水平 (>7%) 可能表明需要进一步调查的潜在血红蛋白病变.
- 对血红蛋白变异的准确诊断对于遗传咨询和患者管理至关重要.
研究的目的:
- 通过HPLC检测出血红蛋白A2水平升高 (>7%) 的患者的突变.
- 调查高HbA2.2队列中血红蛋白E突变的流行率.
- 评估分子技术在潜在的HPLC误诊的情况下确认HbE的实用性.
主要方法:
- 进行了一项涉及39名HbA2≥7%的患者的横截面研究.
- 样品接受了全血细胞计和HPLC分析.
- 使用Mnl1进行聚合酶链反应-限制片段长度多态化 (PCR-RFLP) 检测HbE突变,用桑格测序进行确认.
主要成果:
- 在39名患者中,23名 (59%) 患有异性HbE突变.
- 很大一部分人 (74.4%) 曾经患有thalassemia的家族史.
- 平均HbA2水平为26.6%,表明HbA2水平大幅上升.
结论:
- 由于HPLC的共同突变,在HbA2水平≥7%的个体中,血红蛋白E突变经常被错过或未被诊断出来.
- 在这些情况下,PCR-RFLP等分子方法对于准确检测HbE至关重要.
- 这项研究强调了分子诊断对于解决血红蛋白病查中含糊不清的HPLC结果的重要性.
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