Efficacy of a new schistosomicidal agent 2-[(methylpropyl)amino]-1-octanethiosulfuric acid against an oxamniquine resistant Schistosoma mansoni isolate.

Pharmacological and immunological effects of praziquantel against Schistosoma japonicum: a scoping review of experimental studies

BACKGROUND Chemotherapy for schistosomiasis has been around for 100 years. During the past century, great efforts have been made to develop new antischistosomal drugs from antimonials to nonantimonials, and some of these have been used extensively in clinical treatment. With the exception of a few drugs, such as oxamniquine and metrifonate, most of the antischistosomals developed in the pre-pra...

Repositioning of new potential schistosomicidal drugs using chemogenomic strategy

Background Schistosomiasis remains a severe problem of public health in developing countries [1]. Several reports show that praziquantel, the drug of choice for treating schistosomiasis, can select Schistosoma mansoni strains resistant to the drug. Thus, developing new drugs against this parasitosis is a highly desirable goal [2]. In this context, enzymes involved in energetic metabolism could ...

Chemotherapeutic effects on larval stages of Schistosoma mansoni during infection and re-infection of mice Efeitos da quimioterapia nos estágios larvais do Schistosoma mansoni durante infecção e re-infecção de camundongos

The sensitivity of the larval stages of Schistosoma mansoni to chemotherapy with praziquantel and oxamniquine was tested in mice during primary and secondary infections and after different intervals from cercarial exposure. Worm recovery by perfusion of the porto-mesenteric system, followed by counting and a morphometric study of the parasite, allowed the conclusion that the relative resistance...

Structural and Functional Characterization of the Enantiomers of the Antischistosomal Drug Oxamniquine

BACKGROUND For over two decades, a racemic mixture of oxamniquine (OXA) was administered to patients infected by Schistosoma mansoni, but whether one or both enantiomers exert antischistosomal activity was unknown. Recently, a ~30 kDa S. mansoni sulfotransferase (SmSULT) was identified as the target of OXA action. METHODOLOGY/PRINCIPAL FINDINGS Here, we separate the OXA enantiomers using chro...

Activity of oxamniquine at skin, pulmonary and sexual maturation phases, on a Schistosoma mansoni strain (R1) previously reported as resistant at the adult phase.