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Comparison of peripheral blood B cell subset ratios and B cell-related cytokine levels between ocular and generalized myasthenia gravis.

眼部和全身重症肌无力外周血b细胞亚群比率和b细胞相关细胞因子水平的比较。

  • 影响因子:25.02
  • DOI:10.1016/j.intimp.2019.106130
  • 作者列表:"Hu Y","Wang J","Rao J","Xu X","Cheng Y","Yan L","Wu Y","Wu N","Wu X
  • 发表时间:2020-03-01
Abstract

BACKGROUND:The pathogenesis of myasthenia gravis (MG) depends upon T and B cells, as well as complement and cytokines. The activation of functional subpopulations of T and B cells is the basis of the immune response. However, the activation levels of T and B cell subsets remain unclear in the pathogenesis of MG. Here, we evaluated the proportions of T and B cell subsets and related cytokines in ocular MG (oMG) patients and generalized MG (gMG) patients, and analyzed the potential roles of T and B cell subsets in the pathogenesis of oMG. METHODS:In total, 16 patients with oMG, 31 patients with gMG, and 20 healthy controls (HCs) were included in this study. Peripheral blood mononuclear cells (PBMCs) were separated from venous blood via density centrifugation. The percentages of CD3+CD4+ T cells, CD3+CD8+ T cells, CD4+CD25+CD127- regulatory T cells (Tregs), CD19+CD27+CD38- memory B cells, CD19+CD24hiCD27+ regulatory B cells (Bregs), CD19+CD38+CD138+ plasma cells, and CD19+CD40+ B cells in PBMCs were detected by flow cytometry. The levels of interleukin (IL)-2, IL-4, IL-6, IL-10, IL-17, and interferon (IFN)-γ in serum were detected by enzyme linked immunosorbent assay (ELISA). Differences in T and B cell subsets and related cytokines were compared among the three groups of participants. RESULTS:The proportions of CD19+CD27+CD38- memory B cells were significantly higher in the oMG and gMG groups than in the HC group (P = 0.004; P < 0.001), whereas the proportion of CD19+CD27+CD38- memory B cells was significantly lower in the oMG group than in the gMG group (P < 0.001). Moreover, the proportion of CD19+CD24hiCD27+ Bregs was significantly higher in the oMG group than in the gMG and HC groups (P = 0.001). The proportion of CD4+CD25+CD127- Tregs was significantly lower in the gMG group than in the oMG and HC groups (P < 0.001). Finally, the level of serum IL-10 was significantly higher in the oMG group than in the gMG and HC groups (P < 0.05). Compared with the HC group, serum IL-2 levels were significantly increased in the oMG and gMG groups (P = 0.016; P = 0.002). DISCUSSION:The reduced ratios of Tregs and Bregs may contribute to the progression of oMG to gMG, and the increased proportion of memory B cells may be closely related to the progression of oMG. IL-2 and IL-10 are important in the development of oMG.

摘要

背景: 重症肌无力 (MG) 的发病机制取决于T细胞和b细胞,以及补体和细胞因子。T和b细胞的功能性亚群的活化是免疫应答的基础。然而,T和b细胞亚群的活化水平在MG的发病机制中仍不清楚。在这里,我们评估了眼部MG (oMG) 患者和全身MG (gMG) 患者中T和b细胞亚群及相关细胞因子的比例,并分析了T和b细胞亚群在oMG发病机制中的潜在作用。 方法: 本研究共纳入16例oMG患者、31例gMG患者和20例健康对照 (HCs)。通过密度离心从静脉血中分离外周血单核细胞 (pbmc)。CD3 + CD4 + T细胞、CD3 + CD8 + T细胞、CD4 + CD25 + CD127-调节性T细胞 (Tregs) 、CD19 + CD27 + CD38-记忆b细胞、CD19 + CD24hiCD27 + 调节性b细胞 (Bregs) 、CD19 + CD38 + CD138 + 浆细胞、流式细胞术检测pbmc中CD19 + CD40 + b细胞。采用酶联免疫吸附法 (ELISA) 检测血清中白细胞介素 (IL)-2、IL-4、IL-6、IL-10、IL-17和干扰素 (IFN)-γ 水平。比较3组参与者T、b细胞亚群及相关细胞因子的差异。 结果: oMG组和gMG组CD19 + CD27 + CD38-记忆b细胞比例显著高于HC组 (P = 0.004; P <0.001),而oMG组CD19 + CD27 + CD38-记忆b细胞比例显著低于gMG组 (P <0.001)。此外,oMG组中CD19 + CD24hiCD27 + Bregs的比例显著高于gMG和HC组 (P = 0.001)。gMG组CD4 + CD25 + CD127-treg比例显著低于oMG组和HC组 (P <0.001)。最后,oMG组血清IL-10水平显著高于gMG组和HC组 (P <0.05)。与HC组相比,oMG组和gMG组血清IL-2水平显著升高 (P = 0.016; P = 0.002)。 讨论: Tregs和Bregs的比率降低可能有助于oMG向gMG的进展,并且记忆b细胞的比例增加可能与oMG的进展密切相关。IL-2和IL-10在oMG的发展中具有重要意义。

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发表时间:2020-04-02
DOI:10.1080/09273948.2019.1597896
作者列表:["Apivatthakakul A","Kunavisarut P","Rothova A","Pathanapitoon K"]

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"]

METHODS::Comprehensive reviews of the clinical characteristics and pathogenesis of Aicardi-Goutières syndrome (AGS), particularly its contextualization within a putative type I interferonopathy framework, already exist. However, recent reports of attempts at treatment suggest that an assessment of the field from a therapeutic perspective is warranted at this time. Here, we briefly summarize the neurological phenotypes associated with mutations in the seven genes so far associated with AGS, rehearse current knowledge of the pathology as it relates to possible treatment approaches, critically appraise the potential utility of therapies, and discuss the challenges in assessing clinical efficacy. WHAT THIS PAPER ADDS: Progress in understanding AGS disease pathogenesis has led to the first attempts at targeted treatment. Further rational therapies are expected to become available in the short- to medium-term.

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翻译标题与摘要 下载文献
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"]

METHODS::Purpose: To report the efficacy of adalimumab in a case of chronic Vogt-Koyanagi-Harada (VKH) disease refractory to conventional corticosteroids and immunosuppressive therapy and complicated by central serous chorioretinopathy (CSC).Case report: A 66-year-old woman diagnosed with VKH was treated with intravenous corticosteroids followed by oral corticosteroids and cyclosporine. However, systemic corticosteroids could not be tapered because of recurrent ocular inflammation and systemic complications (diabetes mellitus, moon face, bone weakness), while CSC appeared in both eyes. A diagnosis of chronic VKH resistant to medications complicated by corticosteroid-induced CSC was made. Systemic corticosteroids and cyclosporine were tapered and adalimumab initiated. Bilateral ocular inflammation and CSC were gradually reduced and visual acuity improved without any adverse effect. Twelve months after starting adalimumab monotherapy, no signs of active VKH and CSC were present.Conclusions: Adalimumab is one of the effective therapeutic options for refractory VKH disease complicated with corticosteroid-induced adverse effects.

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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