Publication date: Available online 10 July 2018
Source: Autoimmunity Reviews
Author(s): Elisabetta Zanatta, Pamela Polito, Mariangela Favaro, Maddalena Larosa, Piero Marson, Franco Cozzi, Andrea Doria
Abstract
Scleroderma renal crisis (SRC) is an uncommon but still life-threatening manifestation of systemic sclerosis (SSc). The incidence of SRC has decreased in the last few decades, probably due to a widespread use of vasodilators in SSc patients. It is well-recognized that exposure to different drugs can trigger SRC (corticosteroids, cyclosporine) or prevent its occurrence (iloprost, calcium channel blockers). The prognosis of this life-threatening manifestation has not substantially improved since 1980s, when ACE-inhibitors were introduced in its treatment. ACE-inhibitors remain the mainstay in the therapy of SRC due to their efficacy in controlling malignant hypertension; indeed, the prognosis largely depends on the rapid improvement of the ongoing renal ischemia. Calcium-channel blockers and in third line diuretics and alpha-blockers should be used as additional therapy if blood pressure control remains suboptimal despite maximum tolerated doses of ACE-inhibitors. Given the growing evidence on the role of complement activation and endothelin-1 in the pathogenesis of SRC, recent case-series and case reports have suggested the use of C5-inhibitors and endothelin receptor antagonists in the therapy of SRC, mainly in the refractory cases. Plasma-exchange seems to give some benefits in patients with SRC and microangiopathy or intolerant to ACE-inhibitors. Renal transplantation is the last treatment option and its outcome is similar to that reported in other connective tissue disorders, with a 5-year patient survival rate of about 82%. In this review we summarize the current knowledge in the treatment of SRC.
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