Acute Renal Toxicity of Doxorubicin (Adriamycin)-Loaded Cyanoacrylate Nanoparticles

Pharmaceutical Research - 1995
Manil, Luc1, Mahieu, Philippe1, Couvreur, Patrick2
1Internal Medicine Department, University of LIEGE, Sart-Tilman, Belgium
2Laboratoire de Pharmacie Galénique et de Biopharmacie, URA CNRS 1218, Université de PARIS-Sud, Chatenay-Malabry, France

Tóm tắt

Acute doxorubicin-loaded nanoparticle (DXNP) renal toxicity was explored in both normal rats and rats with experimental glomerulo-nephritis. In normal rats, 2/6 rats given free doxorubicin (DX) (5 mg / kg) died within one week, whereas all control animals and all rats having received free NP or DXNP survived. A 3 times higher proteinuria appeared in animals treated with DXNP than in those treated with DX. Free NP did not provoke any proteinuria. Two hr post-injection, DXNP was 2.7 times more concentrated in kidneys than free DX (p<0.025). In rats with immune experimental glomerulonephritis, 5/6 rats given DX died within 7 days, in contrast to animals treated by DXNP, NP, or untreated, which all survived. Proteinuria appeared in all series, but was 2-5 times more intense (p>0.001) and prolonged after doxorubicin treatment (400-700 mg / day), without significant difference between DXNP and DX. Rats treated by unloaded NP behaved as controls. These results demonstrate that, in these experimental conditions, DXNP killed less animals than free DX, despite of an enhanced renal toxicity of the former. Both effects (better survival and nephrosis) are most probably related to an enhanced capture of DXNP by cells of the mono-nuclear phagocyte system, including mesangial cells.

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