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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/70140
Title: 
Efeito do praziquantel incorporado a lipossomas nos diferentes estágios de desenvolvimento dos ovos de Schistosoma mansoni
Other Titles: 
Effect of praziquantel in liposomes on Schistosoma mansoni eggs at different development stages
Author(s): 
Institution: 
  • Universidade Estadual de Campinas (UNICAMP)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
1808-4532
Abstract: 
  • Mansonian schistosomiasis is caused by an intravascular digenetic trematode Schistosoma mansoni. Praziquantel (PZQ) and oxamniquine (OXA) are the drugs of choice for the treatment of this disease. However, both drugs are subject to some limitations in their action and cases of tolerance and resistance have been reported. Moreover, tolerance and resistance cases have been reported. For this reason, there is an urgent need for research on new alternatives aimed at improving the action of existing drugs, such as the incorporation of these drugs into liposomes. In this study, the efficiency of action of liposome- encapsulated praziquantel (lip.PZQ) on oviposition by S. mansoni, strain BH, was assessed in Mus musculus mices (SPF Swiss mice). Four PZQ and lip.PZQ doses (47; 60; 250 e 300mg/kg) were tested. Some mice were treated 30 days post-infection and others after 45 days. The oogram analyses showed that the most effective lip.PZQ treatment was 300mg/kg dose given on the 45th day post infection, which reduced the number of S. mansoni eggs per gram of tissue.
  • A esquistossomose mansônica é causada pelo trematódeo digenético intravascular Schistosoma mansoni. Para o tratamento dessa enfermidade o praziquantel (PZQ) e a oxamniquina (OXA) são os fármacos escolhidos. No entanto, esses fármacos apresentam limitações quanto à ação e casos de resistência ou tolerância já foram relatados. Por esse motivo, são necessários os estudos de novas alternativas que visam melhorar os fármacos já existentes, como a incorporação desses em lipossomas. Este estudo verificou a ação do praziquantel incorporado a lipossomas (lip.PZQ) sobre os ovos de S. mansoni, linhagem BH em camundongos Mus musculus (Swiss- SPF). Para tanto, foram testadas quatro doses de PZQ e lip.PZQ (47; 60; 250 e 300mg/kg) sendo que parte dos camundongos foi tratada após 30 dias de infecção e outra após 45 dias. A análise do oograma mostrou que a dose lip.PZQ 300mg/kg administrada no 45º dia de infecção foi mais eficaz, pois reduziu a oviposição pelas fêmeas de S. mansoni.
Issue Date: 
1-Dec-2007
Citation: 
Revista de Ciencias Farmaceuticas Basica e Aplicada, v. 28, n. 2, p. 209-214, 2007.
Time Duration: 
209-214
Keywords: 
  • Liposome
  • Oogram
  • Praziquantel
  • Schistosoma mansoni
  • liposome
  • praziquantel
  • animal experiment
  • animal tissue
  • antiprotozoal activity
  • clinical research
  • controlled study
  • developmental stage
  • drug coating
  • egg laying
  • experimental infection
  • mouse
  • mouse strain
  • nonhuman
  • schistosomiasis
  • therapy effect
  • treatment outcome
  • treatment response
Source: 
http://serv-bib.fcfar.unesp.br/seer/index.php/Cien_Farm/article/view/332
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/70140
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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