在患有2型糖尿病和多个β环球蛋白基因突变的患者中,错误地提高了HbA1c水平
Yuko Yamane1, Midori Ishibashi2, Masashi Kameyama3
1Department of Internal Medicine, Yamane Hospital, Shimane, Japan.
Annals of clinical and laboratory science
|January 24, 2025
概括
这项研究调查了2型糖尿病患者与血红蛋白变异的错误升高的HbA1c水平. 红细胞寿命延长和潜在的血红蛋白抗原性增加被确定为促成因素.
科学领域:
- 临床化学 临床化学
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
背景情况:
- 2型糖尿病管理依赖于精确的HbA1c监测.
- 变异性血红蛋白可以干扰HbA1c测量方法,导致不准确的结果.
- 错误地提高HbA1c水平可能会使糖尿病管理和治疗决策复杂化.
研究的目的:
- 在患有2型糖尿病和血红蛋白变异的患者中,调查虚假升高HbA1c水平的原因.
- 为了确定基因突变和红细胞寿命对HbA1c测量的影响.
- 在血红蛋白变异存在的情况下,评估不同HbA1c检测方法的可靠性.
主要方法:
- 患者病例研究涉及一个73岁的男性患有2型糖尿病.
- 通过高性能液体染色学 (HPLC),酶定量和免疫定量测量HbA1c水平的比较.
- 持续的血糖监测和糖性白蛋白水平用于预测.
- 全球蛋白基因分析以识别血红蛋白变体 (Hb Hirose和促进子突变).
- 测量体外糖化潜力和红细胞肌酸,以评估红细胞寿命.
主要成果:
- 在所有测试方法 (HPLC,酶,免疫测试) 中,HbA1c水平错误地升高.
- 免疫测试显示HbA1c明显高于HPLC和酶方法.
- 全球蛋白基因分析揭示了Hb Hirose (β-37Trp→Ser) 和一个β-198A→G促进子突变.
- 红细胞的寿命延长了 (72.7天),超过了参考范围.
- 实验室糖化潜力在正常范围内.
结论:
- 红细胞寿命的延长是导致HbA1c水平虚假升高的重要因素.
- 导致变异血红蛋白的遗传突变可能会增加抗原性,影响免疫检测结果.
- 在血红蛋白变异患者中,精确的HbA1c监测需要仔细考虑测试干扰和红细胞动力学.
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