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lüll Amphotericin B: side effects and toxicity Laniado-Laborin R; Cabrales-Vargas MNRev Iberoam Micol 2009[Dec]; 26 (4): 223-7Amphotericin B (AmB) is a crucial agent in the management of serious systemic fungal infections. In spite of its proven track record, its well-known side effects and toxicity will sometimes require discontinuation of therapy despite a life-threatening systemic fungal infection. The mechanism of action of AmB is based on the binding of the AmB molecule to the fungal cell membrane ergosterol, producing an aggregate that creates a transmembrane channel, allowing the cytoplasmic contents to leak out, leading to cell death. Most of the efforts at improving AmB have been focused on the preparation of AmB with a lipid conjugate. AmB administration is limited by infusion-related toxicity, an effect postulated to result from proinflammatory cytokine production. The principal acute toxicity of AmB deoxycholate includes nausea, vomiting, rigors, fever, hypertension or hypotension, and hypoxia. Its principal chronic adverse effect is nephrotoxicity. AmB probably produces renal injury by a variety of mechanisms. Risk factors for AmB nephrotoxicity include male gender, higher average daily dose of AmB (> or = 35 mg/day), diuretic use, body weight > or = 90 kg, concomitant use of nephrotoxic drugs, and abnormal baseline renal function. Clinical manifestations of AmB nephrotoxicity include renal insufficiency, hypokalemia, hypomagnesemia, metabolic academia, and polyuria due to nephrogenic diabetes insipidus. Human studies show convincingly that sodium loading in excess of the usual dietary intake notably reduces the incidence and severity of AmB-induced nephrotoxicity.|Amphotericin B/*adverse effects[MESH]|Anemia/chemically induced[MESH]|Animals[MESH]|Arrhythmias, Cardiac/chemically induced/physiopathology[MESH]|Calcium Channel Blockers/therapeutic use[MESH]|Cytokines/metabolism[MESH]|Fever/chemically induced[MESH]|Gastrointestinal Diseases/chemically induced[MESH]|Humans[MESH]|Hyperkalemia/chemically induced[MESH]|Kidney Diseases/chemically induced/physiopathology/prevention & control[MESH]|Liposomes[MESH]|Mycoses/drug therapy[MESH]|Rats[MESH]|Sodium Chloride/therapeutic use[MESH] |