*仅供医学专业人士阅读参考
皮肤上的自身免疫风暴
撰文:易木
红斑狼疮(Lupus Erythematosus,LE)是一种临床表现多样的自身免疫性疾病,是一类以皮肤损害为核心表现的自身免疫性疾病,其发病机制涉及遗传易感性、环境触发因素与免疫调节紊乱的复杂交互作用[1]。高达80%的SLE患者会出现皮肤受累,且CLE是约25%患者SLE的首发表现[2]。尽管名为“皮肤”红斑狼疮,但其对患者生活质量的影响深远,尤其在情绪健康和社会功能方面,其负担堪比高血压、2型糖尿病等严重系统性疾病[3]。
近期,在JEADV期刊上发表了一篇题为“Update on cutaneous lupus erythematosus pathogenesis, diagnosis and management”的综述文章[4],本文将根据这篇文章深入探讨CLE的定义与分型、诊断挑战及当前与未来的治疗策略。
图1:文献截图
CLE的定义与临床亚型:一幅多样化的皮肤图谱
CLE的本质是机体免疫系统对自身皮肤组织产生异常应答,紫外线(UV)照射是最关键的环境诱因,可诱导角质形成细胞凋亡并释放核抗原,进而激活以Ⅰ型干扰素为核心的免疫放大环路,最终引发局部炎症与组织损伤[5,6]。
目前临床最常用的分型为1981年Gilliam与Sontheimer提出的临床病理分类,该分类将CLE特异性皮损分为急性、亚急性、慢性三大类,非特异性皮损则包括血管性与非血管性表现[7];此外,Dan Lipsker等学者还提出了按皮肤受累层次的分型方案,进一步完善了CLE的分类体系[8]。
图2:皮肤红斑狼疮亚型的临床诊断标准[4]
急性皮肤红斑狼疮(Acute CLE,ACLE):ACLE以突发的皮肤红斑为核心表现,可分为局限性与泛发性两类。局限性ACLE即典型的“蝶形红斑”,对称分布于面颊与鼻梁,皮损无瘢痕形成;泛发性ACLE则表现为全身泛发的斑丘疹,多累及躯干、四肢,且皮损会避开指关节处,部分患者可出现类似多形红斑或重症药疹的表现。ACLE与SLE的关联性极高(>90%),皮损常在SLE系统治疗后好转[7,9]。
亚急性皮肤红斑狼疮(Subacute CLE,SCLE):表现为环状或丘疹鳞屑性皮损,好发于躯干上部、颈部和上肢。约50%的SCLE患者伴发SLE,且光敏感性显著[10]。需特别关注药物诱发的SCLE,常见诱因包括质子泵抑制剂、抗肿瘤坏死因子(TNF)药物等[11]。
慢性皮肤红斑狼疮(Chronic CLE,CCLE):最常见,包含多个亚型:
盘状红斑狼疮(Discoid LE, DLE):为CCLE中最常见类型,表现为附有粘着性鳞屑和毛囊角栓的萎缩性红斑或斑块,愈后常留瘢痕,好发于头颈部。约10%—25%的DLE患者会进展为SLE[12]。
冻疮样狼疮(Chilblain LE):好发于肢端(手指、足趾、鼻尖、耳廓),皮损为疼痛性紫红色斑块或结节,遇冷加重、冬季易溃疡。与SLE关联约为20%—40%[13]。
狼疮性脂膜炎(Lupus Panniculitis, LEP):主要累及皮下脂肪,表现为疼痛性硬结,好发于面部、上肢及臀部,且常合并 DLE 皮损,与SLE关联约为20%—30%[14]。
肿胀性狼疮(Lupus Tumidus, LET):皮损为红斑性浸润斑块,好发于躯干及面部,光敏感发生率 65%~70%,无瘢痕形成,但与SLE关联性最低(<10%)[15]。
值得注意的是,有学者提出不同的分类体系,例如基于皮损层次(表皮真皮交界处、真皮、皮下组织)进行分类,或提出“不确定性CLE”的概念[8],这反映了临床实践中皮损表现的复杂性和早期诊断的挑战。
诊断的迷宫:如何从“模仿者”中识别CLE?
CLE的临床表现复杂多样,易与玫瑰痤疮、特发性冻疮、扁平苔藓等多种皮肤病混淆,若误诊可能导致治疗方案偏差,因此需结合临床、病理及免疫检查进行精准鉴别[16,17]。
实验室检查:包括抗核抗体(ANA)、抗dsDNA、抗ENA谱(尤其是抗Ro/SSA在SCLE中阳性率高)、补体等,主要用于评估是否伴有SLE。
鉴别诊断的挑战:多种皮肤病可酷似CLE,尤其在早期或不典型时。关键的鉴别诊断包括:
玫瑰痤疮:同样有面部潮红和光敏感,但常有脓疱、毛细血管扩张,且病理上无界面性皮炎和显著的基底膜增厚。值得注意的是,高达20%的酒渣鼻患者ANA可呈阳性[18]。
多形性日光疹(PLE):同为光线性疾病,但病理上真皮乳头水肿更显著,且通常缺乏CD123阳性的浆细胞样树突状细胞(pDC)浸润[19]。
扁平苔藓:尤其当DLE累及头皮或黏膜时需鉴别。组织学上,DLE通常有更显著的毛囊受累、黏蛋白沉积和pDC聚集[20,21]。
皮下脂膜炎样T细胞淋巴瘤(SPTCL):与LEP在临床和病理上极易混淆。SPTCL的病理提示包括非典型淋巴细胞、脂肪组织“镶边”现象及高Ki-67增殖指数[22]。
临床中遇到肢端紫癜的SLE患者时,切勿轻易诊断为“狼疮性血管炎”。研究发现,经皮损活检证实,大部分此类病例实为CLE(主要是DLE或冻疮样狼疮),而真正的狼疮性血管炎仅占极少数[23,24]。
治疗策略:从基础护肤到精准靶向的阶梯
CLE 的治疗需遵循 “个体化分层” 原则,结合皮损亚型、严重程度、瘢痕风险及是否合并 SLE 制定方案,同时重视基础防护,目前临床已形成“基础防护- 一线治疗 - 二线三线治疗 - 生物制剂/新兴疗法” 的阶梯式治疗体系[25,26]。
1
基础与一线治疗
一般措施:严格防晒(物理遮挡+广谱防晒霜)是基石。戒烟、补充维生素D(CLE患者常缺乏且维生素D具有光保护作用)同样重要[27-29]。
局部治疗:外用强效糖皮质激素或钙调神经磷酸酶抑制剂(如他克莫司),适用于轻度、局限性皮损[30]。
全身治疗基石——抗疟药:羟氯喹(HCQ)是系统性治疗的一线选择。若疗效不佳,可换用氯喹或联合奎纳克林,或根据血药浓度调整HCQ剂量[31,32]。有趣的是,近期研究提示,早期启用HCQ可能降低CLE进展为SLE的风险[33]。
2
二线与三线治疗
当抗疟药效果不足时,需根据是否伴发SLE选择后续治疗。
图3:根据是否存在系统性红斑狼疮伴发情况对皮肤红斑狼疮(CLE)进行治疗管理
传统免疫抑制剂:甲氨蝶呤和霉酚酸酯是有效的二线选择,尤其对SCLE和DLE[34]。沙利度胺及其类似物来那度胺疗效显著,但因神经毒性、血栓风险等副作用需谨慎使用[35,36]。氨苯砜对SCLE和DLE有效,且是妊娠期可选药物之一[37]。
生物制剂(主要适用于伴发SLE的CLE):
贝利尤单抗:靶向B细胞激活因子(BAFF),可改善SLE整体活动度及部分皮肤黏膜损害[38]。
Anifrolumab:靶向Ⅰ型干扰素受体,在SLE的Ⅲ期试验(TULIP)中显示出快速且显著的皮损改善效果,对包括冻疮样狼疮、LEP在内的多种难治性CLE亚型有效[39-41]。
3
新兴与靶向治疗:未来已来
基于对CLE发病机制,尤其是Ⅰ型干扰素通路核心作用的深入理解,一系列新型靶向药物正在研发中[42,43]。
靶向浆细胞样树突状细胞(pDC):如Litifilimab(抗BDCA2)在Ⅱ期试验中显著降低皮损活动度[44],其Ⅲ期研究正在进行。
靶向TLR7/8通路:如Enpatoran,通过抑制TLR7/8信号,在Ⅱ期试验中表现出高应答率[45]。
靶向JAK/STAT通路:如德卡伐替尼(TYK2抑制剂)在CLE的Ⅱ期试验中显示出优于安慰剂的疗效[46]。
其他靶点:包括靶向IRAK4(如Edecesertib)[47]、通过调节蛋白质降解发挥作用的Iberdomide[48]等,均在临床试验中展现出潜力。
结论
皮肤红斑狼疮远非简单的“皮肤病”,它是一个涉及复杂免疫失调、具有多种临床表现的疾病实体。准确地分类和细致地鉴别诊断是成功管理的第一步。治疗策略已从传统的抗疟药和免疫抑制剂,迈向以I型干扰素通路为核心的精准靶向时代。随着对疾病机制认识的不断加深和大量新型药物的临床开发,CLE患者正迎来更有效、更安全的治疗前景。临床医生需保持知识更新,为患者提供个体化、分层管理的综合治疗方案。
参考文献:
[1]Wenzel J, Zahn S, Tüting T. Pathogenesis of cutaneous lupus erythematosus: common and different features in distinct subsets. Lupus. 2010;19(9):1020–8.
[2]Yell JA, Mbuagbaw J, Burge SM. Cutaneous manifestations of systemic lupus erythematosus. Br J Dermatol 1996;135:355–62.
[3]Bouaziz J D , Barete S , Le Pelletier F ,et al.Cutaneous lesions of the digits in systemic lupus erythematosus: 50 cases[J].lupus, 2007, 16(3):163-167.
[4]François Chasset,et al.Update on cutaneous lupus erythematosus pathogenesis, diagnosis and management[J].Journal of the European Academy of Dermatology and VenereologyEarly View.First published: 02 December 2025.
[5]Lauffer F, Jargosch M, Krause L, et al. Type I immune response induces keratinocyte necroptosis and is associated with interface dermatitis[J]. J Invest Dermatol, 2018, 138(8):1785-1794.
[6]Wenzel J. Cutaneous lupus erythematosus: new insights into pathogenesis and therapeutic strategies[J]. Nat Rev Rheumatol, 2019, 15(9):519-532.
[7]Gilliam JN, Sontheimer RD. Distinctive cutaneous subsets in the spectrum of lupus erythematosus[J]. J Am Acad Dermatol, 1981, 4(4):471-475.
[8]Lipsker D. The need to revisit the nosology of cutaneous lupus erythematosus: the current terminology and morphologic classification of cutaneous LE: difficult, incomplete and not always applicable[J]. Lupus, 2010,19(9):1047-1049.
[9]Biazar C, Sigges J, Patsinakidis N, et al. Cutaneous lupus erythematosus: first multicenter database analysis of 1002 patients from the European Society of Cutaneous Lupus Erythematosus (EUSCLE)[J]. Autoimmun Rev, 2013, 12(3):444-454.
[10]R D,Sontheimer,J R,et al.Subacute cutaneous lupus erythematosus: a cutaneous marker for a distinct lupus erythematosus subset.[J].Archives of dermatology, 1979,115(12):1409-15.
[11]Kawka L , Mertz P , Chasset F ,et al.Characterization of drug-induced cutaneous lupus: Analysis of 1994 cases using the WHO pharmacovigilance database[J].Autoimmunity Reviews, 2020, 20(1):102705.
[12]Callen J P .Chronic cutaneous lupus erythematosus. Clinical, laboratory, therapeutic, and prognostic examination of 62 patients.[J].Archives of Dermatology, 1982, 118(6):412-6.
[13]Callen J P .Chronic cutaneous lupus erythematosus. Clinical, laboratory, therapeutic, and prognostic examination of 62 patients.[J].Archives of Dermatology, 1982, 118(6):412-6.
[14]Tuffanelli DL. Lupus erythematosus panniculitis (profundus). Arch Dermatol. 1971;103(3):231–42.
[15]Kuhn A, Richter-Hintz D, Oslislo C, et al. Lupus erythematosus tumidus—a neglected subset of cutaneous lupus erythematosus: report of 40 cases[J]. Arch Dermatol, 2000, 136(8):1033-1041.
[16]Chasset F, Richez C, Martin T, Belot A, Korganow AS, Arnaud L. Rare diseases that mimic systemic lupus erythematosus (lupus mimickers). Joint Bone Spine. 2019;86(2):165–71.
[17]Obermoser G, Sontheimer RD, Zelger B. Overview of common, rare and atypical manifestations of cutaneous lupus erythematosus and histopathological correlates. Lupus. 2010;19(9):1050–70.
[18]Lazaridou E, Apalla Z, Sotiraki S, Ziakas NG, Fotiadou C, Ioannides D. Clinical and laboratory study of rosacea in northern Greece. J Eur Acad Dermatol Venereol. 2010;24(4):410–4.
[19]Wackernagel A, Massone C, Hoefler G, Steinbauer E, Kerl H, Wolf P. Plasmacytoid dendritic cells are absent in skin lesions of polymorphic light eruption. Photodermatol Photoimmunol Photomed. 2007;23(1):24–8.
[20]Bolduc C, Sperling LC, Shapiro J. Primary cicatricial alopecia: lymphocytic primary cicatricial alopecias, including chronic cutaneous lupus erythematosus, lichen planopilaris, frontal fibrosing alopecia, and Graham-little syndrome. J Am Acad Dermatol. 2016;75(6):1081–99.
[21]Kolivras A, Thompson C. Clusters of CD123+ plasmacytoid dendritic cells help distinguish lupus alopecia from lichen planopilaris.J Am Acad Dermatol. 2016;74(6):1267–9.
[22]LeBlanc RE, Tavallaee M, Kim YH, Kim J. Useful parameters for distinguishing subcutaneous panniculitis-like T-cell lymphoma from lupus erythematosus panniculitis. Am J Surg Pathol. 2016;40(6):745–54.
[23]Bouaziz JD, Barete S, Le Pelletier F, Amoura Z, Piette JC, Francès C. Cutaneous lesions of the digits in systemic lupus erythematosus: 50 cases. Lupus. 2007;16(3):163–7.
[24]Breillat P, Jachiet M, Ditchi Y, Lenormand C, Costedoat-Chalumeau N, Mathian A, et al. Cutaneous vasculitis occurring in the setting of systemic lupus erythematosus: a multicentre cohort study.Rheumatology (Oxford). 2023;62(6):2189–96.
[25]O'Kane D, McCourt C, Meggitt S, D'Cruz DP, Orteu CH, Benton E, et al. British Association of Dermatologists guidelines for the management of people with cutaneous lupus erythematosus 2021. Br J Dermatol. 2021;185(6):1112–23.
[26]Kuhn A, Aberer E, Bata-Csörgő Z, Caproni M, Dreher A, Frances C, et al. S2k guideline for treatment of cutaneous lupus erythematosus—guided by the European dermatology forum (EDF) in cooperation with the European academy of dermatology and venereology (EADV). J Eur Acad Dermatol Venereol. 2017;31(3):389–404.
[27]Scott JF, Das LM, Ahsanuddin S, Qiu Y, Binko AM, Traylor ZP, et al. Oral vitamin D rapidly attenuates inflammation from sunburn: an interventional study. J Invest Dermatol. 2017;137(10):2078–86.
[28]Heine G, Lahl A, Müller C, Worm M. Vitamin D deficiency in patients with cutaneous lupus erythematosus is prevalent throughout the year. Br J Dermatol. 2010;163(4):863–5.
[29]Cutillas-Marco E, Marquina-Vila A, Grant WB, Vilata-Corell JJ, Morales-Suárez-Varela MM. Vitamin D and cutaneous lupus erythematosus: effect of vitamin D replacement on disease severity. Lupus. 2014;23(7):615–23.
[30]Tzung TY, Liu YS, Chang HW. Tacrolimus vs. clobetasol propionate in the treatment of facial cutaneous lupus erythematosus: a randomized, double-blind, bilateral comparison study. Br J Dermatol. 2007;156(1):191–2.
[31]Chasset F, Arnaud L, Jachiet M, Monfort JB, Bouaziz JD, Cordoliani F, et al. Changing antimalarial agents after inefficacy or intolerance in patients with cutaneous lupus erythematosus: a multicenter observational study. J Am Acad Dermatol. 2018;78(1):107–114.e1.
[32]Chasset F, Arnaud L, Costedoat-Chalumeau N, Zahr N, Bessis D, Francès C. The effect of increasing the dose of hydroxychloroquine (HCQ) in patients with refractory cutaneous lupus erythematosus (CLE): an open-label prospective pilot study. J Am Acad Dermatol. 2016;74(4):693–699.e3.
[33]Bar D, Baum S, Segal Z, Barzilai A, Druyan A, Lidar M. Early initiation of hydroxychloroquine in cutaneous lupus erythematosus to prevent progression to systemic lupus erythematosus: a long-term follow-up study. J Am Acad Dermatol. 2025;25:S0190.
[34]Keyes E, Jobanputra A, Feng R, Grinnell M, Vazquez T, Diaz D, et al. Comparative responsiveness of cutaneous lupus erythematosuspatients to methotrexate and mycophenolate mofetil: a cohort study. J Am Acad Dermatol. 2022;87(2):447–8.
[35]Chasset F, Tounsi T, Cesbron E, Barbaud A, Francès C, Arnaud L. Efficacy and tolerance profile of thalidomide in cutaneous lupus erythematosus: a systematic review and meta-analysis. J Am Acad Dermatol. 2017;78(2):342–50.
[36]Aitmehdi R, Arnaud L, Francès C, Senet P, Monfort JB, de Risi Pugliese T, et al. Long-term efficacy and safety outcomes of lenalidomide for cutaneous lupus erythematosus: a multicenter retrospective observational study of 40 patients. J Am Acad Dermatol. 2020;84(4):1171–4.
[37]Klebes M, Wutte N, Aberer E. Dapsone as second-line treatment for cutaneous lupus erythematosus? A retrospective analysis of 34 patients and a review of the literature. Dermatology. 2016;232(1):91–6.
[38]Manzi S, Sánchez-Guerrero J, Yokogawa N, Wenzel J, Ocran-Appiah JC, Harris JH, et al. The effect of belimumab on mucocutaneous and vasculitis manifestations in patients with systemic lupus erythematosus: a large pooled post hoc analysis. Lupus. 2025;34(7):666–78.
[39]Chasset F, Jaume L, Mathian A, Abisror N, Dutheil A, Barbaud A, et al. Rapid efficacy of anifrolumab in refractory cutaneous lupus erythematosus. J Am Acad Dermatol. 2023;89:171–3.
[40]Woodbury MJ, Smith KN, Smith JS, Merola JF. Anifrolumab for the treatment of refractory chilblain lupus erythematosus. JAAD Case Rep. 2024;48:69–71.
[41]Maeshima K, Abe T, Imada C, Ozaki T, Shibata H. Anifrolumab for refractory lupus erythematosus panniculitis in systemic lupus erythematosus. Rheumatology (Oxford). 2024;63:e115–e117.
[42]Lim D, Kleitsch J, Werth VP. Emerging immunotherapeutic strategies for cutaneous lupus erythematosus: an overview of recent phase 2 and 3 clinical trials. Expert Opin Emerg Drugs. 2023;28(4):257–73.
[43]Xie L, Lopes Almeida Gomes L, Stone CJ, Faden DF, Werth VP. An update on clinical trials for cutaneous lupus erythematosus. J Dermatol. 2024;51(7):885–94.
[44]Werth VP, Furie RA, Romero-Diaz J, Navarra S, Kalunian K, van Vollenhoven RF, et al. Trial of anti-BDCA2 antibody Litifilimab for cutaneous lupus erythematosus. N Engl J Med. 2022;387(4):321–31.
[45]Pearson D, Morand E, Wenzel J, Furie R, Dall'Era M, SanchezGuerrero J, et al. Randomized, placebo-controlled phase ii study of Enpatoran, a small molecule toll-like receptor 7/8 inhibitor, in cutaneous lupus erythematosus: results from cohort a. J Rheumatol. 2025;52(1):11–8.
[46]Merola JF, Gottlieb AB, Aranow C, Chasset F, Wenzel J, Fiorentino D, et al. POS0781 efficacy and safety of oral deucravacitinib in patients with cutaneous manifestations of lupus erythematosus: results from paisley cle, a global, randomized, placebo-controlled, phase 2 trial. Ann Rheum Dis. 2025;84:940–1.
[47]Ammann SE, Cottell JJ, Wright NE, Warr MR, Snyder CA, Bacon EM, et al. Discovery of edecesertib (GS-5718): a potent, selective inhibitor of IRAK4. J Med Chem. 2025;68(11):10619–30.
[48]Merrill JT, Werth VP, Furie R, van Vollenhoven R, Dörner T, Petronijevic M, et al. Phase 2 trial of Iberdomide in systemic lupus erythematosus. N Engl J Med. 2022;386(11):1034–45.
责任编辑:大晨
*"医学界"力求所发表内容专业、可靠,但不对内容的准确性做出承诺;请相关各方在采用或以此作为决策依据时另行核查。
↓↓↓点击「阅读原文」学习更多临床技能