Benznidazole treatment leads to DNA damage in Trypanosoma cruzi and the persistence of rare widely dispersed non-replicative amastigotes in mice

S Jayawardhana, AI Ward, AF Francisco… - PLoS …, 2023 - journals.plos.org
Benznidazole is the front-line drug used to treat infections with Trypanosoma cruzi, the
causative agent of Chagas disease. However, for reasons that are unknown, treatment …

A modified drug regimen clears active and dormant trypanosomes in mouse models of Chagas disease

JM Bustamante, F Sanchez-Valdez… - Science translational …, 2020 - science.org
A major contributor to treatment failure in Chagas disease, caused by infection with the
protozoan parasite Trypanosoma cruzi, is that current treatment regimens do not address the …

Nitroheterocyclic drugs cure experimental Trypanosoma cruzi infections more effectively in the chronic stage than in the acute stage

AF Francisco, S Jayawardhana, MD Lewis, KL White… - Scientific Reports, 2016 - nature.com
The insect-transmitted protozoan parasite Trypanosoma cruzi is the causative agent of
Chagas disease, and infects 5–8 million people in Latin America. Chagas disease is …

Trypanosoma cruzi amastigotes that persist in the colon during chronic stage murine infections have a reduced replication rate

AI Ward, F Olmo, RL Atherton, MC Taylor… - Open …, 2020 - royalsocietypublishing.org
Chronic Trypanosoma cruzi infections are typically lifelong, with small numbers of parasites
surviving in restricted tissue sites, which include the gastrointestinal tract. There is …

In Situ Detection of Dormant Trypanosoma cruzi Amastigotes Using Bioluminescent-Fluorescent Reporters

F Sánchez-Valdéz, A Padilla - T. cruzi Infection: Methods and Protocols, 2019 - Springer
Chagas disease agent, Trypanosoma cruzi, is capable to persist after prolonged drug
treatment using effective drugs. The reason of treatment failure is not known, but recent …

Drug susceptibility of genetically engineered Trypanosoma cruzi strains and sterile cure in animal models as a criterion for potential clinical efficacy of anti-T. cruzi …

JA Urbina, JH McKerrow - Antimicrobial Agents and …, 2015 - Am Soc Microbiol
The article by Francisco et al.(1) describes the use of a biolumi-nescence imaging system
(2) to evaluate the efficacy of benznidazole, a 2-nitromididazole, and posaconazole, an …

Spontaneous dormancy protects Trypanosoma cruzi during extended drug exposure

FJ Sánchez-Valdéz, A Padilla, W Wang, D Orr… - Elife, 2018 - elifesciences.org
The ability of the Chagas disease agent Trypanosoma cruzi to resist extended in vivo
exposure to highly effective trypanocidal compounds prompted us to explore the potential for …

Benznidazole Treatment following Acute Trypanosoma cruzi Infection Triggers CD8+ T-Cell Expansion and Promotes Resistance to Reinfection

BP Olivieri, V Cotta-de-Almeida… - Antimicrobial agents …, 2002 - Am Soc Microbiol
Many studies have shed light on the mechanisms underlying both immunoprotection and
immune dysregulation arising after Trypanosoma cruzi infection. However, little is known …

Intracellular DNA replication and differentiation of Trypanosoma cruzi is asynchronous within individual host cells in vivo at all stages of infection

MC Taylor, A Ward, F Olmo… - PLoS neglected …, 2020 - journals.plos.org
Investigations into intracellular replication and differentiation of Trypanosoma cruzi within
the mammalian host have been restricted by limitations in our ability to detect parasitized …

Investigation of pyrimidine nucleoside analogues as chemical probes to assess compound effects on the proliferation of Trypanosoma cruzi intracellular parasites

ML Sykes, DH Hilko, LI Kung, SA Poulsen… - PLoS Neglected …, 2020 - journals.plos.org
Trypanosoma cruzi parasites utilise de novo pyrimidine biosynthesis to produce DNA and
survive within mammalian host cells. This pathway can be hijacked to assess the replication …