Neuromyelitis Optica Immunoglobulin G in Chinese Patients Detected by Immunofluorescence Assay on a Monkey Brain Substrate

Neuromyelitis Optica Immunoglobulin G in Chinese Patients Detected by Immunofluorescence Assay on a Monkey Brain Substrate
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通过猴脑基质免疫荧光检测检测中国患者视神经脊髓炎免疫球蛋白 G

DOI:
10.1159/000326779
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发表时间:
2011-11
影响因子:
2.4
通讯作者:
胡学强
胡学强
中科院分区:
医学4区
文献类型:
--
作者:
胡学强

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背景:血清视神经脊髓炎免疫球蛋白 G (NMO-IgG) 被用作区分视神经脊髓炎 (NMO) 和多发性硬化症 (MS) 的生物标志物。然而,最初的检测方法昂贵且复杂,并且灵敏度较低。在这里,我们研究了在猴脑上使用间接免疫荧光 (IIF) 检测 NMO-IgG 检测的潜力。方法:通过对猴脑基质进行 IIF 测定,确定 168 个样本中的 NMO-IgG 血清阳性率。将这些数据与使用 McNemar 和 kappa 测试的标准小鼠大脑 IIF 测定的数据进行比较。结果:50 名 NMO 患者中的 31 名 (62%)、18 名纵向广泛横贯性脊髓炎患者中的 7 名 (38.9%)、57 名 MS 患者中的 6 名 (10.5%) 和 10 名视神经炎患者中的 5 名 (50%) NMO-IgG 血清呈阳性。急性部分横贯性脊髓炎患者 (n = 3) 或健康对照 (n = 20) 均未呈阳性。因此,对于临床明确的 NMO 患者,该测试的敏感性为 62%。以 57 例 MS 患者作为对照组,特异性为 89.5%。猴脑的改良 IIF 测定和基于小鼠脑的标准 IIF 测定没有显着差异(McNemar 检验;p = 1.000)。 39 个血清阳性样本和 100 个血清阴性样本中的两种检测结果一致(kappa 检验;kappa = 0.592,p < 0.0001)。结论:虽然改良的 IIF 猴脑测定并不比标准小鼠脑 IIF 测定更好,但我们确认 NMO-IgG 是区分 NMO 和 MS 的敏感且特异的生物标志物。
Background: Serum neuromyelitis optica immunoglobulin G (NMO-IgG) is used as a biomarker to differentiate between neuromyelitis optica (NMO) and multiple sclerosis (MS). However, the original assay is expensive and complex and shows low sensitivity. Here, we investigated the potential of NMO-IgG detection using an indirect immunofluorescence (IIF) assay on monkey brains. Methods: NMO-IgG seroprevalence was determined in 168 samples by an IIF assay on a monkey brain substrate. The data were compared with those from a standard mouse brain IIF assay using McNemar and kappa tests. Results: Thirty-one of 50 (62%) NMO patients, 7 of 18 (38.9%) longitudinally extensive transverse myelitis patients, 6 of 57 (10.5%) MS patients, and 5 of 10 (50%) optic neuritis patients were seropositive for NMO-IgG. None of the acute partial transverse myelitis patients (n = 3) or healthy controls (n = 20) was positive. Thus, the sensitivity of the test was 62% for the patients with clinically definite NMO. The specificity was 89.5%, considering the 57 MS patients as the control group. The modified IIF assay on monkey brains and the standard IIF assay based on mouse brains were not significantly different (McNemar test; p = 1.000). The two assays were concordant in 39 seropositive samples and 100 seronegative samples (kappa test; kappa = 0.592, p < 0.0001). Conclusions: Although the modified IIF monkey brain assay was no better than the standard mouse brain IIF assay, we affirmed that NMO-IgG is a sensitive and specific biomarker to differentiate between NMO and MS.
DOI: 10.1177/1352458509106851
发表时间: 2009-10-01
影响因子: 5.8
作者:
Fazio, R.;Malosio, M. L.;Martino, G.
通讯作者: Martino, G.
DOI: --
发表时间: 2005
期刊: --
影响因子: --
作者:
通讯作者: --
DOI: 10.1093/brain/awm062
发表时间: 2007-05-01
期刊: BRAIN
影响因子: 14.5
作者:
Takahashi, Toshiyuki;Fujihara, Kazuo;Itoyama, Yasuto
通讯作者: Itoyama, Yasuto
DOI: 10.1212/01.wnl.0000216139.44259.74
发表时间: 2006-05-23
期刊: NEUROLOGY
影响因子: 9.9
作者:
Wingerchuk, D. M.;Lennon, V. A.;Weinshenker, B. G.
通讯作者: Weinshenker, B. G.
DOI: 10.1093/brain/awm027
发表时间: 2007-05-01
期刊: BRAIN
影响因子: 14.5
作者:
Matsuoka, Takeshi;Matsushita, Takuya;Kira, Jun-ichi
通讯作者: Kira, Jun-ichi