title: A study on the provocative day test effect of ivermectin and albendazole on nocturnal periodic Wuchereria bancrofti microfilaraemia.
abstract: We conducted a randomized double-blind placebo-controlled study, in the Ahanta West District of Ghana, on the provocative day test effect of ivermectin and albendazole alone and in combination on nocturnal periodic Wuchereria bancrofti microfilaraemia. Sixty-three individuals with high night-time microfilaria (mf) intensities were identified in 1997 or 1998 and randomized into 4 groups. Blood samples for mf were then collected from the same individuals in the daytime (between 09:00 and 15:00) immediately before and 30-50 min after treatment. Groups 1-4 were treated with ivermectin alone (150-200 micrograms/kg), albendazole alone (400 mg), the combination of ivermectin and albendazole, and placebo, respectively. Intensities of mf in daytime samples were considerably lower than in night-time samples. Neither ivermectin or albendazole alone nor their combination provoked significant liberation of W. bancrofti mf into the peripheral circulation after the daytime treatment.
authors.affiliation: Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana.
authors.forename: S K
authors.initials: SK
authors.lastname: Dunyo
authors.forename: F K
authors.initials: FK
authors.lastname: Nkrumah
authors.forename: P E
authors.initials: PE
authors.lastname: Simonsen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015766:Albendazole / Q000627:therapeutic use*; D000818:Animals; D000871:Anthelmintics / Q000627:therapeutic use*; D002648:Child; D002940:Circadian Rhythm; D004311:Double-Blind Method; D004338:Drug Combinations; D004605:Elephantiasis, Filarial / Q000188:drug therapy*; D005260:Female; D005369:Filaricides / Q000627:therapeutic use*; D006801:Humans; D007559:Ivermectin / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D014958:Wuchereria bancrofti
chemical_list: D000871:Anthelmintics; D004338:Drug Combinations; D005369:Filaricides; D007559:Ivermectin; D015766:Albendazole