Screening of a PDE-focused library identifies imidazoles with in vitro and in vivo antischistosomal activity.
Int J Parasitol Drugs Drug Resist
; 9: 35-43, 2019 04.
Article
em En
| MEDLINE
| ID: mdl-30669086
ABSTRACT
We report the evaluation of 265 compounds from a PDE-focused library for their antischistosomal activity, assessed in vitro using Schistosoma mansoni. Of the tested compounds, 171 (64%) displayed selective in vitro activity, with 16 causing worm hypermotility/spastic contractions and 41 inducing various degrees of worm killing at 100⯵M, with the surviving worms displaying sluggish movement, worm unpairing and complete absence of eggs. The compounds that did not affect worm viability (nâ¯=â¯72) induced a complete cessation of ovipositing. 82% of the compounds had an impact on male worms whereas female worms were barely affected. In vivo evaluation in S. mansoni-infected mice with the in vitro 'hit' NPD-0274â¯at 20â¯mg/kg/day orally for 5 days resulted in worm burden reductions of 29% and intestinal tissue egg load reduction of 35% at 10 days post-treatment. Combination of praziquantel (PZQ) at 10â¯mg/kg/day for 5 days with NPD-0274 or NPD-0298 resulted in significantly higher worm killing than PZQ alone, as well as a reduction in intestinal tissue egg load, disappearance of immature eggs and an increase in the number of dead eggs.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Schistosoma mansoni
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Bibliotecas de Moléculas Pequenas
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Imidazóis
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Anti-Helmínticos
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Animals
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Humans
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Male
Idioma:
En
Revista:
Int J Parasitol Drugs Drug Resist
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Egito