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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Intravenous or inhaled pentamidine for treating Pneumocystis carinii pneumonia in AIDS. A randomized trial.

OBJECTIVE: To evaluate the efficacy and toxicity of aerosolized pentamidine and of reduced-dose intravenous pentamidine for the treatment of mild to moderate Pneumocystis carinii pneumonia in patients with the acquired immunodeficiency syndrome (AIDS). DESIGN: Randomized open study with serial pulmonary function testing and measurement of pentamidine concentrations in plasma and bronchoalveolar lavage fluid. PATIENTS: Of 44 men and 1 woman with a mild to moderate first episode of P. carinii pneumonia (Pao2 greater than or equal to 7.3 kPa [55 mm Hg]), 23 received aerosolized pentamidine and 22, intravenous pentamidine. INTERVENTIONS: Pentamidine isethionate, 600 mg by inhalation using a Respirgard II nebulizer (Marquest Medical Products, Inc., Englewood, Colorado) or 3 mg/kg body weight intravenously, administered once daily for 2 to 3 weeks. MEASUREMENTS AND MAIN RESULTS: The planned 60-patient study was stopped after 45 patients had been enrolled. The rates (aerosolized compared with intravenous pentamidine) of initial failure, early recrudescence of symptoms, and relapse were 12% and 19% (difference, 7%; 99% confidence interval [CI], - 23% to 37%; P = 0.67), 35% and 0% (difference, 35%; CI, 13% to 58%; P = 0.02), and 24% and 0% (difference, 24%; CI, 4% to 49%; P = 0.03). The rates (aerosolized compared with intravenous pentamidine) of major toxicity were 0% (0 of 17 patients) and 10% (2 of 21 patients) (difference 10%; CI, -1% to 29%; P = 0.24). The mean (+/- SD) pentamidine concentration in bronchoalveolar lavage fluid for patients receiving aerosolized pentamidine was 96.6 +/- 65.1 ng/mL compared with 14.4 +/- 17.7 ng/mL for patients receiving intravenous treatment. Trough concentrations of pentamidine in plasma increased from 0 to 25.4 +/- 16.4, 56.5 +/- 26.1, and 61.1 +/- 56.0 ng/mL at the end of weeks 1, 2, and 3 of intravenous therapy, respectively. CONCLUSIONS: The data suggest that reduced-dose intravenous pentamidine was more effective than aerosolized pentamidine for treating mild to moderate P. carinii pneumonia. Systemic absorption during aerosolized therapy was minimal; daily doses of intravenous pentamidine resulted in increased accumulation of pentamidine in plasma.[1]


  1. Intravenous or inhaled pentamidine for treating Pneumocystis carinii pneumonia in AIDS. A randomized trial. Conte, J.E., Chernoff, D., Feigal, D.W., Joseph, P., McDonald, C., Golden, J.A. Ann. Intern. Med. (1990) [Pubmed]
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