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在患有Mycobacterium avium复杂性肺病的患者中,免疫力和抗菌药物治疗耐药性之间的关联:一个多中心观察性研究
Akinobu Matsuura1, Yuichiro Shindo2, Daisuke Sugiyama3
1Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan.
BMC infectious diseases
|October 23, 2025
概括
耐火性Mycobacterium avium复杂性肺病 (MAC-PD) 显示T细胞耗尽,但效应器功能保持完好. 较低的CD8+T细胞IL-2产生与更长的疾病持续时间有关,这表明潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 肺部病理学 肺部病理学
背景情况:
- 飞菌复杂肺病 (MAC-PD) 是一种具有挑战性的感染,治疗结果不佳.
- T细胞和巨细胞对免疫力至关重要,但它们在MAC-PD治疗失败中的作用尚不清楚.
- 这项研究调查了耐火MAC-PD的T细胞功能障碍和疲劳.
研究的目的:
- 探索耐火性MAC-PD患者的免疫特征,特别是免疫抑制和T细胞耗尽.
- 确定与治疗失败和疾病持续时间相关的潜在生物标志物.
主要方法:
- 招募了41名患有MAC-PD的患者,他们接受了至少12个月的标准抗菌疗法.
- 将患者分为治疗成功 (21) 和失败 (20) 组.
- 利用流细胞计分析CD4+和CD8+T细胞表达的共抑制分子,激活标记物和外围血液单核细胞中的转录因子.
主要成果:
- 与健康对照组相比,患有MAC-PD的患者在T细胞上表达了联合抑制分子 (PD-1, TIM-3, CD160, LAG-3, 2B4) 的增加.
- 在治疗成功和失败组之间,在大多数T细胞激活,共刺激,共抑制分子或转录因子中没有发现显著差异.
- CD8+ T 细胞的低IL-2产生与明显更长的疾病持续时间相关 (138.3个月与42.7个月) 并与更高的2B4和较低的CD28表达有关.
结论:
- 在MAC-PD治疗失败时,CD4+和CD8+T细胞的效应器功能被保留.
- 减少CD8+T细胞IL-2的产生是MAC-PD中延长疾病持续时间的关键指标.
- 在CD8+T细胞上增加2B4和减少CD28可能意味着T细胞功能障碍,并可能指导未来对耐火性MAC-PD的宿主导疗法.
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