Evaluation of parasitemia by qPCR in patients with chronic Chagas disease treated with benznidazole  

作　　者：Tycha Bianca Sabaini Pavan Eros Antônio de Almeida Rodrigo Gonçalves de Lima Jamiro da Silva Wanderley Luiz Cláudio Martins Sandra Cecília Botelho Costa Gláucia Elisete Barbosa Marcon 

机构地区：[1]Departamento de Clínica Médica,Faculdade de Ciências Médicas,Universidade Estadual de Campinas(Unicamp),Campinas,São Paulo,Brasil [2]Fundação Oswaldo Cruz,Fiocruz Mato Grosso do Sul,Campo Grande,MS,Brasil

出　　处：《Asian Pacific Journal of Tropical Medicine》2023年第12期565-572,共8页亚太热带医药杂志（英文版）

基　　金：Fundação de AmparoàPesquisa do Estado de São Paulo-FAPESP.Process number 2016/08737-0;TBSP received a Ph.D.scholarship from the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior(CAPES,Finance code 001).

摘　　要：Objective:To evaluate parasitemia by qPCR in patients undergoing etiological treatment and followed in a Brazilian reference center.Methods:Parasite load was quantified by qPCR in 32 participants with chronic Chagas disease who were treated with benznidazole.Serological analyses were performed before and after the treatment and parasite loads were compared prior and 12/18 months post the treatment.Results:Thirty-two participants were recruited and treated with benznidazole,and 20 were followed-up.Adverse events(AE)were observed in 22 out of 29 participants that had safety data(76%),and dermatological alterations were the most frequently observed AE.Of the 20 participants analyzed,13 and 7 completed 12 and 18 months follow-up after the treatment,respectively.12 Months after the final treatment,Trypanosoma cruzi was detectable in 3 patients by qPCR;18 months after the final treatment,Trypanosoma cruzi was detectable per qPCR in 4 of the 7 participants.Thus,between 12 and 18 months,7 participants of the 20 initial follow-up cases showed positive qPCR,indicating treatment failures.Conclusions:qPCR can be used as an alternative method for evaluating the effectiveness of the etiological treatment of CD,and can be applied to analyze early therapeutic failures.The study showed that benznidazole therapy had limited effectiveness in treating chronic CD patients,thus emphasizing the importance of conducting continued research for developing more effective therapies and diagnosis for CD.

关 键 词：Trypanosoma cruzi Chagas disease Antitrypanosomal therapy BENZNIDAZOLE qPCR Therapeutic failure 

分 类 号：R53[医药卫生—内科学]