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Treatment effects of fingolimod in multiple sclerosis: Selective changes in peripheral blood lymphocyte subsets.

芬戈莫德在多发性硬化中的治疗作用: 外周血淋巴细胞亚群的选择性变化。

  • 影响因子:3.02
  • DOI:10.1371/journal.pone.0228380
  • 作者列表:"Hjorth M","Dandu N","Mellergård J
  • 发表时间:2020-02-03
Abstract

BACKGROUND:Treatment with fingolimod reduces inflammation in multiple sclerosis (MS) by inhibiting lymphocyte egress from lymph nodes. We aimed to map, in detail, the alterations in peripheral blood lymphocyte subpopulations in relation to clinical outcome in MS patients treated with fingolimod. METHODS:Paired blood samples from relapsing-remitting MS patients (n = 19) were collected before and after one year of treatment with fingolimod (0.5 mg/day). Absolute counts and relative proportions of a broad set of T- B- and NK-cell subsets were analyzed by flow cytometry. Blood samples from 18 healthy controls were used for baseline comparisons. RESULTS:Treatment with fingolimod markedly decreased the absolute numbers of all major lymphocyte subsets, except for NK cells. The reduction was most pronounced within the T helper (Th) and B cell populations (p<0.001). By phenotyping differentiation status of T cells, dramatic reductions within the naïve and central memory (CM) cell populations were found (p<0.001), while a less pronounced reduction was observed among effector memory (EM) cells (p<0.001). The numbers of regulatory T cells (Tregs) were also decreased (p<0.001), but to a lesser extent than other T cell populations, resulting in a relative preservation of Tregs with a memory phenotype (p = 0.002). CONCLUSIONS:Our results confirm that fingolimod therapy markedly reduces lymphocyte counts in peripheral blood of MS patients. Subgroup analysis of T cells showed that naïve and CM Th cells were the most profoundly affected and that memory Tregs were relatively preserved.

摘要

背景: 芬戈莫德治疗通过抑制淋巴细胞从淋巴结流出来减轻多发性硬化症 (MS) 的炎症。我们的目的是详细地描绘芬戈莫德治疗的MS患者外周血淋巴细胞亚群的变化与临床结局的关系。 方法: 收集 19 例复发缓解型MS患者 (n = 19) 在芬戈莫德 (0.5 mg/d) 治疗 1 年后的配对血样。通过流式细胞术分析广泛的T- B和NK细胞亚群的绝对计数和相对比例。18 例健康对照的血液样本用于基线比较。 结果: 芬戈莫德治疗后,除NK细胞外,其他主要淋巴细胞亚群的绝对数量均明显减少。在T辅助细胞 (Th) 和B细胞群体中降低最明显 (p<0.001)。通过T细胞的表型分化状态,发现初始和中枢记忆 (CM) 细胞群内显著减少 (p<0.001),而在效应记忆 (EM) 细胞中观察到较不明显的减少 (p<0.001)。调节性T细胞 (Tregs) 的数量也减少 (p<0.001),但程度低于其他T细胞群,导致具有记忆表型的Tregs相对保存 (p = 0.002)。 结论: 我们的研究结果证实芬戈莫德治疗可显著降低MS患者外周血淋巴细胞计数。T细胞的亚组分析显示,幼稚和CM Th细胞受到的影响最深刻,记忆treg相对保留。

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DOI:10.1080/09273948.2019.1597896
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METHODS::Purpose: To report on ocular Vogt-Koyanagi-Harada (VKH)-like syndrome under vemurafenib treatment for metastatic melanoma.Design: A case report.Method: Description of clinical and imaging manifestations including fundus photography, fluorescein, and indocyanine green angiography.Results: A 46-year-old Thai female was diagnosed with metastatic melanoma of the skin and had been treated with multiple surgical excisions, radiotherapy, and vemurafenib (initial dose 480 mg orally twice daily, subsequently increased to maximum dose of 960 mg twice daily). After 6 months of vemurafenib use, she complained of bilateral redness and photophobia and was diagnosed with bilateral anterior uveitis, which was topically treated. Two weeks later, her visual acuity (VA) sharply deteriorated to 20/80 and counting fingers. Ocular examination at that stage stronly resembled acute VKH disease. She exhibited intraocular inflammation, and her fundus examination revealed bilateral optic disc swelling and serous retinal detachment. Fluorescein angiogram showed disc leakage and multiple pinpoint hyperfluorescence leakage spots and indocyanine green demonstrated multiple hypofluorescent spots. Oral prednisolone 30 mg/day was commenced while vemurafenib medication was ceased. Three weeks later, her vision improved, and serous retinal detachment subsided. However, her cutaneous melanoma recurred.Conclusions: Vemurafenib, a potential adjunct treatment for metastatic melanoma, was complicated by the development of panuveitis, papillitis, and multiple serous detachments. These ocular symptoms were similar to the presentation of acute VKH syndrome.

翻译标题与摘要 下载文献
影响因子:2.19
发表时间:2020-01-01
DOI:10.1111/dmcn.14268
作者列表:["Crow YJ","Shetty J","Livingston JH"]

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影响因子:1.52
发表时间:2020-04-02
DOI:10.1080/09273948.2019.1603312
作者列表:["Takayama K","Obata H","Takeuchi M"]

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神经系统自身免疫性疾病方向

神经系统自身免疫性疾病是以自身免疫细胞、免疫分子等攻击神经系统为主要致病机制的自身免疫性疾病。在免疫反应中,作用于神经系统自身抗原的致病抗体统称为神经系统自身抗体。

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