6 documents found, page 1 of 1
Direct inhibition of the longevity-promoting factor SKN-1 by insulin-like signa...
Tullet, Jennifer M. A.; Hertweck, Maren; An, Jae Hyung; Baker, Joseph; Hwang, Ji Yun; Liu, Shu; Oliveira, Riva de Paula; Baumeister, RalfInsulin/IGF-1-like signaling (IIS) is central to growth and metabolism and has a conserved role in aging. In C. elegans, reductions in IIS increase stress resistance and longevity, effects that require the IISinhibited FOXO protein DAF-16. The C. elegans transcription factor SKN-1 also defends against oxidative stress bymobilizing the conserved phase 2 detoxification response. Herewe showthat IIS not only oppos...
Real-time PCR strategy for parasite quantification in blood and tissue samples ...
Caldas, Sérgio; Caldas, Ivo Santana; Diniz, Lívia de Figueiredo; Lima, Wanderson Geraldo de; Oliveira, Riva de Paula; Cecílio, Alzira BatistaThe lack of an accurate diagnosis has been a serious obstacle to the advancement of the anti-Trypanosoma cruzi chemotherapy and long-term infection can result in different health risks to human. PCRs are alternative methods, more sensitive than conventional parasitological techniques, which due to their low sensitivities are considered unsuitable for these purposes. The aim of this study was to investigate a se...
Açaí (Euterpe oleracea Mart.) modulates oxidative stress resistance in Caenorha...
Bonomo, Larissa de Freitas; Silva, David Nunes; Boasquivis, Patrícia Ferreira; Paiva, Franciny Aparecida; Guerra, Joyce Ferreira da CostaAçaí (Euterpe oleracea Mart.) has recently emerged as a promising source of natural antioxidants. Despite its claimed pharmacological and nutraceutical value, studies regarding the effects of açaí in vivo are limited. In this study, we use the Caenorhabditis elegans model to evaluate the in vivo antioxidant properties of açaí on an organismal level and to examine its mechanism of action. Supplementation with ac...
Genetic profiling of Trypanosoma cruzi directly in infected tissues using neste...
Pimenta, Juliana Ramos; Freitas, Jorge Marcelo de; Duffy, Tomás; Bartholomeu, Daniella Castanheira; Oliveira, Riva de Paula; Chiari, EglerThe investigation of the importance of the genetics of Trypanosoma cruzi in determining the clinical course of Chagas disease will depend on precise characterisation of the parasites present in the tissue lesions. This can be adequately accomplished by the use of hypervariable nuclear markers such as microsatellites. However the unilocal nature of these loci and the scarcity of parasites in chronic lesions make...
Diet supplementation with açaí (Euterpe oleracea Mart.) pulp improves biomarker...
Souza, Melina Oliveira de; Silva, Maísa; Silva, Marcelo Eustáquio; Oliveira, Riva de Paula; Pedrosa, Maria LúciaObjective: We investigated the antioxidant potential and hypocholesterolemic effects of acai (Euterpe oleracea Mart.) pulp ingestion in rats fed a standard or hypercholesterolemic diet. Methods: Female Fischer rats were fed a standard AIN-93 M diet (control) or a hypercholesterolemic diet that contained 25% soy oil and 1% cholesterol. The test diet was supplemented with 2% acai pulp (dry wt/wt) for control (gro...
Benznidazole alters the pattern of Cyclophosphamide-induced reactivation in exp...
Santos, Daniela Maria dos; Martins, Tassiane Assíria Fontes; Caldas, Ivo Santana; Diniz, Lívia de Figueiredo; Coelho, George Luiz Lins MachadoThe factors involved in the reactivation of chronic Chagas disease infection are not clear enough and may be related to host immune unbalance and/or parasite genetic diversity. To evaluate the role of the Trypanosoma cruzi genetic background in the Chagas disease reactivation, we inoculated Cyclophosphamide-immunos upressed (CyI) Swiss mice with clonal stocks from T. cruzi I (Cuica cl1, P209 cl1, Gamba cl1, SP1...