Statics and dynamics of ethane molecules in AlPO(4)-5: a molecular dynamics simulation study

From an experimental perspective, there has been disagreement among researchers on whether ethane would display single-file or normal diffusive behavior in the channels of AlPO(4)-5. Pulsed field gradient nuclear magnetic resonance measurements implied single-file diffusion, while quasielastic neutron scattering showed normal diffusion. In this paper we present the results of extensive classical molecular dynamics simulations of the diffusion of ethane molecules adsorbed in AlPO(4)-5. Our aim is to provide microscopic details of the static and dynamic properties of the adsorbed molecules in order to verify whether the conditions for the single-file regime can be achieved in a nondefective AlPO(4)-5 crystal structure.

Therapeutic evaluation of ketoconazole in patients with coccidioidomycosis

Eleven adult patients (seven men and four nonpregnant women) with coccidioidomycosis were treated orally with ketoconazole (R41,400). Two patients presented with disseminated coccidioidomycosis, six with pulmonary coccidioidomycosis, and three with the chronic cutaneous form of the disease. Diagnosis was established by culture of Coccidioides immitis and/or histopathologic identification of the fungus. All patients received 400 mg of ketoconazole per day for the first 10 days; afterwards four of them received 200 mg per day. Evaluation indicated that nine patients improved, one did not, and one could not be assessed. Treatment of coccidioidomycosis with ketoconazole appears to be reasonably effective and produces fewer adverse effects than does amphotericin B; however, further studies of the efficacy of this new drug are needed.