单氨酸氧化酶-A (MAO-A) 低表达变体和增加Plasmodium vivax疟疾复发的风险
Maria Carolina Silva De Barros Puça1, Danielle Fonseca Rodrigues1, Yanka Evellyn Alves Rodrigues Salazar1
1Molecular Biology and Malaria Immunology Research Group, Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ), Belo Horizonte, Minas Gerais, Brazil.
The Journal of antimicrobial chemotherapy
|June 13, 2024
概括
单氨酸氧化酶-A (MAO-A) 和CYP2D6酶的遗传变异会影响普莱马奎因的新陈代谢,增加Plasmodium vivax疟疾复发. 低MAO-A活性与受损的CYP2D6功能相结合,显著降低了卡西普里马奎因水平,导致治疗失败.
科学领域:
- 药物基因组学 药物基因组学
- 传染性疾病 传染性疾病
- 疟疾研究 疟疾研究
背景情况:
- 普拉马奎因对于彻底治愈Plasmodium vivax疟疾至关重要.
- 治疗的有效性取决于primaquine转化为活性形式的代谢.
- 代谢酶的遗传变异可能会影响临床结果.
研究的目的:
- 为了研究单氨酸氧化酶-A (MAO-A) 在原氨酸代谢中的作用.
- 确定MAO-A和CYP2D6基因多态化对P.vivax疟疾复发的影响.
- 探索酶变体,代谢物水平和治疗疗效之间的关系.
主要方法:
- 在205名P.vivax疟疾患者中对MAO-A和CYP2D6多态的基因定型.
- 在100名患者中测量了血中primaquine和carboxyprimaquine水平.
- 酶变体,代谢物水平和记录的疟疾复发之间的相关性分析.
主要成果:
- 在具有低表达MAO-A基因基因和受损CYP2D6活性的患者中观察到降低的碳氧胺水平.
- 这一患者群体的P. vivax疟疾复发率显著增加.
- 如果CYP2D6活性正常,单独低表达的MAO-A与复发没有相关性.
结论:
- 低表达的MAO-A变体可能会加剧受损CYP2D6的效应,导致低碳二和增加疟疾复发.
- 研究结果表明,碳氧普里马奎因可能是产生抗疟疾代谢产物的CYP介导途径的基质.
- MAO-A基因型是影响P.vivax疟疾中普马奎因治疗结果的重要因素.
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