The formation and elimination of sulphamethoxazole hydroxylamine in relation to the pharmacokinetics of the parent compound and its N4-acetyl metabolite were investigated in six healthy subjects after a single oral dose of 800 mg sulphamethoxazole. The apparent half-lives of sulphamethoxazole and its metabolites were approximately 10 h, indicative of formation rate-limited metabolism. The mean ...

THE synergistic action of the combination ofsulphonamides and 2-4-diamino-pyrimidine compounds against the gonococcus has been demonstrated clinically by Csonka and Knight (1967). It was decided to reassess the clinical efficacy of the combination of trimethoprim with sulphamethoxazole* in gonorrhoea, to examine its mode of action, and to compare the effect of a combination of another pyrimidin...

The anti-Pneumocystis carinii activity of atovaquone, dapsone and sulphamethoxazole alone and combined with dihydrofolate reductase (DHFR) inhibitors and macrolides was investigated against five clinical isolates of P. carinii. The susceptibility tests were performed by inoculation of the organisms on to cell monolayer and parasite count after 72 h incubation at 37 degrees C. Culture plates wer...

Strains of Staphylococcus aureus isolated from the lesions of hospital patients were surveyed for resistance to sulphamethoxazole and to trimethoprim. Of 675 strains tested, 18.5% were resistant to sulphamethoxazole and 1.6% to trimethoprim. All the trimethoprim-resistant strains were resistant to sulphamethoxazole and to a 1:20 mixture of the two drugs. Trimethoprim-resistant strains were on a...

One hundred and three children with proved typhoid fever were treated with trimethoprim-sulphamethoxazole, and the results compared with those of a further 40 children treated with chloramphenicol. The bacteriological response to trimethoprim-sulphamethoxazole was unsatisfactory. From this study it seems that at present chloramphenicol is still the treatment of choice for typhoid fever. In view...

Poskitt, E. M. E., and Parkin, J. M. (1972). Archives of Disease in Childhood, 47, 626. Effect of trimethoprim-sulphamethoxazole combination on folate metabolism in malnourished children. The effect of a 10-day course of trimethoprim-sulphamethoxazole on folate metabolism was studied in 10 children with severe protein-calorie malnutrition. There was a significant increase in formimino-glutamic ...

Since sulphonamides are no longer predictably effective in the treatment of chancroid the combination of trimethoprim-sulphamethoxazole (TMP-SMX) was evaluated to identify other effective regimens. One hundred and nine patients with genital ulcers (75 men and 34 women) seen at the Special Treatment Clinic in Nairobi, Kenya, were randomly assigned to treatment with a seven day course of either s...

Trimethoprim is inhibitory for a wide range of bacteria, and when used in combination with a sulphonamide marked synergy has been reported.In order to test its value in the treatment of urinary infections 154 hospital patients with infections of varying severity and due to a wide range of organisms were treated with combinations of sulphamethoxazole and trimethoprim. Combinations of these subst...