Letter to the editor on: prophylactic nicotinamide treatment protects from rotenone-induced neurodegeneration by increasing mitochondrial content and volume. - Bocca, Cinzia; Kouassi-Nzoughet, Judith; Chao de la Barca, Juan Manuel; Bonneau, Dominique; Verny, Christophe; Gohier, Philippe; Orssaud, Christophe; Reynier, Pascal (Acta Neuropathologica Communications, 2024)