Department of Medicine, Georgetown University, Washington, DC, United States.
National Centre for Neuroimmunology and Emerging Diseases, Griffith University, Gold Coast, QLD, Australia.
Front Immunol. 2024 Oct 17;15:1440643. doi: 10.3389/fimmu.2024.1440643. eCollection 2024.
Reduced natural killer (NK) cell cytotoxicity is the most consistent immune finding in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Meta-analysis of the published literature determined the effect size of the decrement in ME/CFS. Databases were screened for papers comparing NK cell cytotoxicity in ME/CFS and healthy controls. A total of 28 papers and 55 effector:target cell ratio (E:T) data points were collected. Cytotoxicity in ME/CFS was significantly reduced to about half of healthy control levels, with an overall Hedges' g of 0.96 (0.75-1.18). Heterogeneity was high but was explained by the range of E:T ratios, different methods, and potential outliers. The outcomes confirm reproducible NK cell dysfunction in ME/CFS and will guide studies using the NK cell model system for pathomechanistic investigations.
https://www.crd.york.ac.uk/prospero/, identifier CRD42024542140.
自然杀伤 (NK) 细胞细胞毒性降低是肌痛性脑脊髓炎/慢性疲劳综合征 (ME/CFS) 中最一致的免疫发现。对已发表文献的荟萃分析确定了 ME/CFS 中 NK 细胞毒性降低的效应大小。筛选数据库以查找比较 ME/CFS 和健康对照组 NK 细胞细胞毒性的论文。共收集了 28 篇论文和 55 个效应器:靶细胞比 (E:T) 数据点。ME/CFS 中的细胞毒性明显降低到健康对照组水平的一半左右,总体 Hedges'g 为 0.96(0.75-1.18)。异质性很高,但可以通过 E:T 比值、不同方法和潜在异常值来解释。这些结果证实了 ME/CFS 中 NK 细胞功能障碍的可重复性,将指导使用 NK 细胞模型系统进行发病机制研究。
https://www.crd.york.ac.uk/prospero/,标识符 CRD42024542140。