|
|
|
|
|
| Souza-Fagundes,E.M.; Cota,B.B.; Rosa,L.H.; Romanha,A.J.; Corrêa-Oliveira,R.; Rosa,C.A.; Zani,C.L.; Teixeira-Carvalho,A.; Martins-Filho,O.A.. |
| Hypnophilin and panepoxydone, terpenoids isolated from Lentinus strigosus, have significant inhibitory activity onTrypanosoma cruzi trypanothione reductase (TR). Although they have similar TR inhibitory activity at 10 μg/mL (40.3 μM and 47.6 μM for hypnophilin and panepoxydone, respectively; ~100%), hypnophilin has a slightly greater inhibitory activity (~71%) on T. cruzi amastigote (AMA) growth in vitro as well as on in vitro phytohemagglutinin (PHA)-induced peripheral blood mononuclear (PBMC) proliferation (~70%) compared to panepoxydone (69% AMA inhibition and 91% PBMC inhibition). Hypnophilin and panepoxydone at 1.25 μg/mL had 67% inhibitory activity onLeishmania (Leishmania) amazonensis amastigote-like (AMA-like) growth in vitro. The panepoxydone... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chagas disease; Leishmaniasis; Chemotherapy; Immunomodulation; Hypnophilin; Lentinus strigosus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001100007 |
| |
|
|
| Carmo,R.A.; Oliveira,G.C.; Guimarães,M.D.C.; Oliveira,M.S.; Lima,A.A.; Buzek,S.C.; Corrêa-Oliveira,R.; Rocha,M.O.C.. |
| We determined and analyzed risk factors of hepatitis C virus (HCV)-infected Brazilian hemophiliacs according to their virological, clinical and epidemiological characteristics. A cross-sectional and retrospective study of 469 hemophiliacs was carried out at a Brazilian blood center starting in October 1997. The prevalence of HCV infection, HCV genotypes and factors associated with HCV RNA detection was determined. The seroprevalence of anti-HCV antibodies (ELISA-3.0) was 44.6% (209/469). Virological, clinical and epidemiological assessments were completed for 162 positive patients. There were seven (4.3%) anti-HCV seroconversions between October 1992 and October 1997. During the same period, 40.8% of the positive anti-HCV hemophiliacs had abnormal alanine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hepatitis C virus; HCV genotypes; Hemophilia; Chronic liver disease; Transfusion; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000500012 |
| |
|
|
| Bahia-Oliveira,L.M.G.; Gomes,J.A.S.; Rocha,M.O.C.; Moreira,M.C.V.; Lemos,E.M.; Luz,Z.M.P.; Pereira,M.E.S.; Coffman,R.L.; Dias,J.C.P.; Cançado,J.R.; Gazzinelli,G.; Corrêa-Oliveira,R.. |
| An apparently paradoxical role for IFN-<FONT FACE="Symbol">g</font> in human Chagas' disease was observed when studying the pattern of cytokine production by peripheral blood mononuclear cells (PBMC) obtained from two groups of chagasic patients after specific stimulation with Trypanosoma cruzi-derived antigens. The groups studied were 1) patients treated with benznidazole during the acute phase of Trypanosoma cruzi infection and 2) chronically infected untreated patients. In the treated group, higher levels of IFN-<FONT FACE="Symbol">g</font> were produced by PBMC from individuals cured after treatment when compared to non-cured patients. In contrast, in the chronically infected group (not treated) higher levels of IFN-<FONT... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trypanosoma cruzi Chagas' disease cardiomyopathy peripheral blood mononuclear cells (PBMC) cytokines INF-<; FONT FACE=Symbol>; G<; /font>. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100017 |
| |
|
|
| Corrêa-Oliveira,R.; Malaquias,L.C.C.; Falcão,P.L.; Viana,I.R.C.; Bahia-Oliveira,L.M.G.; Silveira,A.M.S.; Fraga,L.A.O.; Prata,A.; Coffman,R.L.; Lambertucci,J.R.; Cunha-Melo,J.R.; Martins-Filho,O.A.; Wilson,R.A.; Gazzinelli,G.. |
| The role of different cytokines in the peripheral blood mononuclear cell (PBMC) proliferative response and in in vitro granuloma formation was evaluated in a cross-sectional study with patients with the different clinical forms and phases of Schistosoma mansoni infection, as well as a group of individuals "naturally" resistant to infection named normal endemic (NE). The blockage of IL-4 and IL-5 using anti-IL-4 and anti-IL-5 antibodies significantly reduced the PBMC proliferative response to soluble egg (SEA) and adult worm (SWAP) antigens in acute (ACT), chronic intestinal (INT) and hepatosplenic (HS) patients. Similar results were obtained in the in vitro granuloma formation. Blockage of IL-10 had no significant effect on either assay using PBMC from ACT... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Schistosoma mansoni human schistosomiasis mansoni cytokines IL-10 IL-4 IFN-<; FONT FACE=Symbol>; G<; /font>. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100024 |
| |
|
|
|
