ABSTRACT
Sarcoidosis encompasses a heterogeneous spectrum of clinical presentations, including sarcoidosis in association with tattoos. We report the development of cutaneous and pulmonary sarcoidosis in a patient with long-standing eyebrow tattoos whose cutaneous sarcoidosis almost completely resolved when treated with tacrolimus 0.1% ointment. A 70-year-old woman with a 3-year history of an erythematous eruption circumscribing her eyebrow tattoos presented with a chronic, nonproductive cough of 8 months' duration. Skin biopsy results demonstrated naked tubercles consistent with sarcoidosis. Results of radiographs and a computed tomography scan of the chest revealed multiple pulmonary nodules with mediastinal and hilar adenopathy. The results of transbronchial biopsy were consistent with the diagnosis of pulmonary sarcoidosis. Initial treatment with oral prednisone only improved the pulmonary sarcoidosis. The cutaneous sarcoidosis almost completely resolved after the addition of tacrolimus 0.1% ointment.
Subject(s)
Sarcoidosis/etiology , Skin Diseases/etiology , Tattooing/adverse effects , Aged , Female , Glucocorticoids/therapeutic use , Humans , Immunosuppressive Agents/therapeutic use , Prednisone/therapeutic use , Sarcoidosis/drug therapy , Skin Diseases/drug therapy , Tacrolimus/therapeutic useABSTRACT
Exposure of newborn BALB/c mice to murine leukemia virus (MLV) TR1.3 induces fusion of brain capillary endothelial cells (BCEC), loss of cerebral vessel integrity, hemorrhagic stroke, and death. Although TR1.3 infects endothelial cells in multiple organs, syncytia are only observed in BCEC. To determine if viral and cellular factors are responsible for selective syncytia formation, capillary endothelial cells (CEC) from multiple organs were assayed in vitro for MLV infection and cell fusion. Following incubation with virus, all CEC were infected to an equal extent as determined by expression of MLV envelope and infectious virus production; however, MLV-induced syncytia were only observed in TR1.3-infected BCEC cultures. These in vitro results mirror the in vivo pattern of TR1.3 MLV infection and neuropathology, and definitively show that selective fusion and pathology of BCEC by MLV is determined by properties unique to BCEC as contrasted to other endothelial cell types.
