In a second investigation of the regularity of dapsone self. administration among outpatients in Addis Ababa , the compliance of patients participating in a trial to assess the ability of combinations of dapsone, thiacetazone and rifampicin to prevent relapse with dapsone­ resistant leprosy was compared with that of non-trial patients. Despite the considerable additional time spent on encouragi...

The aim of this study to study the drug resistance patterns of dapsone (pre- and post-MDT) and rifampicin (post-MDT era). All the 84 patients from pre-MDT period (1985-1990) and 77 patients for post-MDT period (1990-2002) reporting to a tertiary care hospital-NJIL & OMD, Agra and referred for drug susceptibility testing were included in the study. Drug resistance was studied by mouse foot pad m...

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...

BACKGROUND Dapsone has been recommended as a second-line immunosuppressive agent for patients with immune thrombocytopenia (ITP). METHODS We retrospectively analyzed the efficacy and safety of dapsone therapy in patients with ITP. RESULTS Nine ITP patients were treated with dapsone at a dose of 50-100 mg/day between May 2013 and March 2016. All patients were refractory to multiple previous ...

Dapsone first came into medicine as an antibacterial agent but was found to be less effective than other sulfonamides. Likewise its activity against tuberculosis was disappointing. Nevertheless, it has been the main stay in the treatment of leprosy. It also has some action against malaria and other parasites. Nowadays, after leprosy, dapsone has proved as a valuable drug in the treatment of a w...

Two Mycobacterium leprae genes, folP1 and folP2, encoding putative dihydropteroate synthases (DHPS), were studied for enzymatic activity and for the presence of mutations associated with dapsone resistance. Each gene was cloned and expressed in a folP knockout mutant of Escherichia coli (C600DeltafolP::Km(r)). Expression of M. leprae folP1 in C600DeltafolP::Km(r) conferred growth on a folate-de...

A case of dapsone syndrome occurring in a Filipino man under treatment for multibacillary (MB) leprosy is described. The patient manifested progressive fever, erythroderma and jaundice 4 weeks after initiation of multidrug therapy (MDT) with rifampicin, clofazimine and dapsone. The clinical symptoms conformed well to the dapsone syndrome first described in the 1950s and this report proves that ...

Herein, we report a case of an 8-year-old girl with dapsone hypersensitivity syndrome (DHS) that occurred during the treatment of erythema elevatum diutinum. She had fever, gross hematuria, and malaise for three weeks after initiation of dapsone therapy. Five days after stopping dapsone treatment, she returned to the emergency clinic because of high fever, emesis, diarrhea, upper respiratory sy...

All patients with the acquired immunodeficiency syndrome treated for their first episode of Pneumocystis carinii pneumonia at San Francisco General Hospital between 1 April 1985 and 15 July 1985 were evaluated for their response to treatment with dapsone (100 mg/day) by mouth for 21 days. Of 44 patients evaluated, 18 were eligible for the study. Of these 18 patients, the conditions of 7 of them...

BACKGROUND Dapsone is described as being active against Mycobacterium leprae, hence its role in the treatment of leprosy and related pathologies. Despite its therapeutic potential, the low solubility of dapsone in water results in low bioavailability and high microbial resistance. Nanoemulsions are pharmaceutical delivery systems derived from micellar solutions with a good capacity for improvin...