Cerebrospinal fluid immunoglobulin light chain ratios predict disease progression in multiple sclerosis.

Cerebrospinal fluid immunoglobulin light chain ratios predict disease progression in multiple sclerosis.
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DOI:
10.1136/jnnp-2018-317947
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发表时间:
2018-10
期刊:
Journal of neurology, neurosurgery, and psychiatry
影响因子:
--
通讯作者:
Curnow SJ
Curnow SJ
中科院分区:
其他
文献类型:
--
作者:
Rathbone E;Durant L;Kinsella J;Parker AR;Hassan-Smith G;Douglas MR;Curnow SJ

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确定多发性硬化(MS)诊断时脑脊液(CSF)免疫球蛋白κ/λ轻链的比值是否可预测疾病进展,以及这是否是CSF浆母细胞固有的。CSF和外周血来自接受择期诊断性腰椎穿刺的患者,包括临床孤立综合征(CIS)(n=43)、复发缓解型MS(RRMS; n=50)、原发性进展型MS(PPMS; n=20)和其他神经系统疾病对照,包括炎性(ONID; n=23)和非炎性(OND; n=114)。分析CSF样本的游离和免疫球蛋白相关轻链以及B细胞和浆母细胞。在5年随访期间收集临床随访数据(如可用)。在所有MS组中,CSF κ:λ游离轻链(FLC)中位数均增加(CIS:18.2,95%CI 6.8至30.3; RRMS:4.4,95%CI 2.7至11.4; PPMS:12.0,95%CI 3.6至37.1)但对照组除外(OND:1.61,95% CI 1.4至1.9; ONID:1.7,95% CI 1.3至2.2; p<0.001)。该比值可预测5年时扩展残疾状态评分(EDSS)进展,CSF κ:λ FLC高(>10)组的中位EDSS较低(0.0,95% CI 0 - 2.5 vs 2.5,95% CI 0 - 4,高vs低; p=0.049)。CSF κ:λ FLC与CSF IgG 1 κ:λ相关(r=0.776; p<0.0001),并且是CSF浆母细胞固有的(r=0.65; p=0.026)。这些数据表明,诊断性腰椎穿刺时测定的CSF免疫球蛋白κ:λ比值可预测MS疾病进展,因此可能是早期治疗分层的有用预后标志物。
To determine whether the ratio of cerebrospinal fluid (CSF) immunoglobulin kappa to lambda light chains at time of multiple sclerosis (MS) diagnosis predicts disease progression and whether this was intrinsic to CSF plasmablasts. CSF and peripheral blood were obtained from patients undergoing elective diagnostic lumbar puncture and included clinically isolated syndrome (CIS) (n=43), relapsing remitting MS (RRMS; n=50), primary progressive MS (PPMS; n=20) and other neurological disease controls, both inflammatory (ONID; n=23) and non-inflammatory (OND; n=114). CSF samples were assayed for free and immunoglobulin-associated light chains and on B cells and plasmablasts. Clinical follow-up data were collected during a 5-year follow-up period where available. There was an increased median CSF κ:λ free light chain (FLC) in all MS groups (CIS: 18.2, 95% CI 6.8 to 30.3; RRMS: 4.4, 95% CI 2.7 to 11.4; PPMS: 12.0, 95% CI 3.6 to 37.1) but not controls (OND: 1.61, 95% CI 1.4 to 1.9; ONID: 1.7, 95% CI 1.3 to 2.2; p<0.001). This ratio predicted Expanded Disability Status Scores (EDSS) progression at 5 years, with a lower median EDSS in the group with high (>10) CSF κ:λ FLC (0.0, 95% CI 0 to 2.5 vs 2.5, 95% CI 0 to 4, high vs low; p=0.049). CSF κ:λ FLC correlated with CSF IgG1 κ:λ (r=0.776; p<0.0001) and was intrinsic to CSF plasmablasts (r=0.65; p=0.026). These data demonstrate that CSF immunoglobulin κ:λ ratios, determined at the time of diagnostic lumbar puncture, predict MS disease progression and may therefore be useful prognostic markers for early therapeutic stratification.
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