Allen Jeffrey A, Peterson Alicia, Sufit Robert, Hinchcliff Monique E, Mahoney J Matthew, Wood Tammara A, Miller Frederick W, Whitfield Michael L, Varga John
Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Arthritis Rheum. 2011 Nov;63(11):3633-9. doi: 10.1002/art.30514.
Eosinophilia-myalgia syndrome (EMS) is characterized by subacute onset of myalgias and peripheral eosinophilia, followed by chronic neuropathy and skin induration. An epidemic of EMS in 1989 was linked to consumption of L-tryptophan that had originated from a single source. Following the ban by the Food and Drug Administration (FDA) on the sale of L-tryptophan, the incidence of EMS declined rapidly. Moreover, no new cases have been described since the FDA ban was lifted in 2005. We report the clinical, histopathologic, and immunogenetic features of a new case of L-tryptophan-associated EMS, along with evidence of activated transforming growth factor β and interleukin-4 signaling in the lesional skin.
嗜酸性粒细胞增多性肌痛综合征(EMS)的特征是肌痛和外周血嗜酸性粒细胞增多呈亚急性起病,随后出现慢性神经病变和皮肤硬结。1989年发生的一次EMS流行与食用来自单一来源的L-色氨酸有关。在食品药品监督管理局(FDA)禁止L-色氨酸销售后,EMS的发病率迅速下降。此外,自2005年FDA解除禁令以来,未再有新病例的报道。我们报告了一例新的L-色氨酸相关EMS病例的临床、组织病理学和免疫遗传学特征,以及病变皮肤中转化生长因子β和白细胞介素-4信号激活的证据。