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The natriuretic peptides BNP and NT-proBNP are currently the most commonly used biomarkers in heart failure, but they have limitations. There is thus a need to identify new biomarkers that may prove useful, alone or in combination, for screening, diagnosis and prognosis. Galectin-3 is a protein involved in a variety of cellular signaling pathways and is found in many tissues. Its expression is low in normal hearts but elevated in fibrotic hearts. Among other effects, it promotes fibroblast proliferation and collagen synthesis, contributing to the cardiac remodeling that is central to the development and progression of heart failure. Heart failure associated with elevated galectin-3 (&gt;17.8 ng/ml) affects 30-50% of patients with chronic heart failure, and is a marker of worse prognosis, with higher rates of short-term rehospitalization and mortality. It is thought that galectin-3 inhibition, or even genetic disruption, may reverse or delay disease progression. Galectin-3 appears to have greater prognostic value than natriuretic peptides when assessed separately, however, when combined their prognostic value is even higher. Galectin-3, associated with BNP or NT-proBNP, may help improve the diagnosis and prognosis of heart failure.

Galectina‐3: indicador de prognóstico. Alvo de intervenção terapêutica?