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Dive into the research topics where Luciano Correa Ribeiro is active.

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Featured researches published by Luciano Correa Ribeiro.


Revista Da Sociedade Brasileira De Medicina Tropical | 2009

Micoses sistêmicas: fatores associados ao óbito em pacientes com infecção pelo vírus da imunodeficiência humana, Cuiabá, Estado de Mato Grosso, 2005-2008

Luciano Correa Ribeiro; Rosane Christine Hahn; Olivia Cometi Favalessa; Tomoko Tadano; Cor Jesus Fernandes Fontes

Between 2005 and 2008, the prevalence of systemic mycosis among 1,300 HIV/AIDS patients in Cuiabá, Mato Grosso, was 4.6%. The fungus species isolated were Cryptococcus neoformans in 50%, Cryptococcus gattii in 1.6%, Cryptococcus spp in 6.6%, Histoplasma capsulatum in 38.3% and Paracoccidioides brasiliensis in 3.3%. Death was recorded in the cases of 32 patients (53.3%), and cryptococcosis was the main cause. The CD4+ T lymphocyte count was low and similar among patients who survived or died due to systemic mycosis. The factors independently associated with the deaths of these patients were alcoholism (OR: 8.2; 95% CI: 1.4-62.1; p = 0005) and the mean level of lactate dehydrogenase [758 (182) U/l vs. 416 (268) U/l; p < 0001]. The findings showed that systemic mycosis was highly lethal among the patients with HIV/AIDS in Cuiabá and suggested that clinical-laboratory characteristics such as alcoholism and early elevation of lactate dehydrogenase may be factors relating to worse prognosis under these conditions.


Revista Da Sociedade Brasileira De Medicina Tropical | 2009

First description of phenotypic profile and in vitro drug susceptibility of Cryptococcus spp yeast isolated from HIV-positive and HIV-negative patients in State of Mato Grosso

Olivia Cometti Favalessa; Luciano Correa Ribeiro; Tomoko Tadano; Cor Jesus Fernandes Fontes; Flávio Basili Dias; Bruno Pereira Albuquerque Coelho; Rosane Christine Hahn

Thirty-seven isolates from 10 HIV-negative and 26 HIV-positive patients in Mato Grosso were evaluated. Direct examination, culturing and chemotyping of species were performed. Ketoconazole, itraconazole, voriconazole, fluconazole and amphotericin B were evaluated. Thirty-seven yeasts of Cryptococcus spp were identified, of which 26 were from HIV-positive patients (25 Cryptococcus neoformans and one Cryptococcus gattii) and 10 from HIV-negative patients (five Cryptococcus neoformans and five Cryptococcus gattii). The Cryptococcus neoformans clinical isolates from HIV-positive patients showed resistance (8% and 8.7%) and dose-dependent susceptibility (20% and 17.4%) to fluconazole and itraconazole, respectively. Among the Cryptococcus neoformans isolates from HIV-negative patients, there was dose-dependent susceptibility (40%) to fluconazole. Cryptococcus gattii isolates from HIV-negative patients were shown to be susceptible to all antifungal agents, except for one isolate of Cryptococcus gattii that showed dose-dependent susceptibility to fluconazole (20%). The Cryptococcus gattii isolate from an HIV-positive patient showed resistance to fluconazole (MIC > or = 256 (1/4)g/ml) and itraconazole (MIC = 3 (1/4)microg/ml).


Brazilian Journal of Infectious Diseases | 2005

Dapsone syndrome with acute renal failure during leprosy treatment: case report

Edson Nogueira Alves-Rodrigues; Luciano Correa Ribeiro; Margareth D. Silva; Arley Takiuchi; Cor Jesus Fernandes Fontes

Dapsone syndrome is a rare hypersensitivity reaction to dapsone and is characterized by high fever, papular or exfoliative dermatitis, progressing to liver toxicity and generalized lymphadenopathy, resembling a mononucleosis infection. We report a patient who developed acute renal failure, as well as other complications characteristic of dapsone syndrome, during leprosy treatment. Renal involvement had not been previously described as a dapsone syndrome feature.


Revista Da Sociedade Brasileira De Medicina Tropical | 2005

Púrpura em paciente com estrongiloidíase disseminada

Luciano Correa Ribeiro; Edson N.A. Rodrigues Junior; Margareth D. Silva; Arley Takiuchi; Cor Jesus Fernandes Fontes

The association of systemic corticosteroid therapy and dissemination of Strongyloides stercoralis has been increasingly documented in the literature. Skin involvement in disseminated strongyloidiasis has been reported and the most commonly described cutaneous manifestations are rash and petechial eruptions. We present a case of an immunosuppressed man that developed disseminated strongyloidiasis with extensive purpura.


Revista Da Sociedade Brasileira De Medicina Tropical | 2000

Hepatite Delta no Estado de Mato Grosso: apresentação de cinco casos

Luciano Correa Ribeiro; Francisco José Dutra Souto

Five cases of hepatitis B and D superinfection in teenagers from the northernmost region of Mato Grosso State are reported. Hepatitis B is high prevalent there, but not hepatitis D. The proximity to the States of Acre and Amazonas and intense migration may be introducing the virus into the region. Necessity for the surveillance of hepatitis D in northern Mato Grosso is emphasized.Five cases of hepatitis B and D superinfection in teenagers from the northernmost region of Mato Grosso State are reported. Hepatitis B is high prevalent there, but not hepatitis D. The proximity to the States of Acre and Amazonas and intense migration may be introducing the virus into the region. Necessity for the surveillance of hepatitis D in northern Mato Grosso is emphasized.


Archives of Virology | 2009

An autochthonous case of hepatitis C virus genotype 5a in Brazil: phylogenetic analysis

Luciano Correa Ribeiro; Francisco José Dutra Souto; Márcia P. do Espírito-Santo; Rodrigo G-Oliveira; Elisabeth Lampe

Genotype 5 of hepatitis C virus (HCV) has been rarely identified in South America. A female of African descent who never left Brazil was found to be infected by this genotype in Mato Grosso state, Central Brazil. The patient denied drug injections and revealed that she had received blood transfusions several years before. One of her blood donors was identified and tested negative for anti-HCV and HCV RNA, as were her husband and offspring. Phylogenetic analysis of the E1 and NS5B regions confirmed that this HCV strain belonged to genotype 5a. However, the E1 region analysis indicates that our strain is not closely related to any sequences of genotype 5a from other geographical areas, diverging from the African and European subclades known so far. These data suggest that genotype 5a HCV might have been circulating at a low level in Brazil longer than previously supposed.


Memorias Do Instituto Oswaldo Cruz | 2006

Hepatitis B virus screening in contacts of blood donors with antibodies against core protein (anti-HBc), but without surface antigen (HBsAg)

Hildenete Monteiro Fortes; Luciano Correa Ribeiro; Gustavo Faria Perazolo; Francisco José Dutra Souto

To increase blood safety Brazil introduced screening for anti-HBc among blood donors in 1993. There was a decrease in the hepatitis B virus (HB V) transmission, but this measure identified a great number ofHBsAg-negative, anti-HBc-positive donors. Surveillance policy determines that contacts of HBV carriers should be screened to HBV markers, but there is no recommendation about how to guide contacts of HBsAg-negative, anti-HBc-positive donors. Aiming to evaluate whether the contacts of this group are at greater risk for HB V infection, a cross-sectional study was performed to compare prevalence of HBV infection between contacts of HBsAg-positive blood donors (group I) and contacts of HBsAg-negative, anti-HBc-positive donors (group II). Contacts were submitted to a questionnaire and blood tests for HBV markers. In group I (n = 143), 53 (37.1%) were anti-HBc-positive and 11 (7.7%) were HBsAg-positive. In group II (n = 111), there were 9 and 0.9%, respectively. HB V exposure was associated with group I, sexual activity, blood transfusion, being one of the donors parents, and living for more than ten years with the donor. Regarding the families as sample units, it was more common to find at least one member with HBV markers (p < 0.05) among the families of group I compared to group II. Contacts of HBsAg-negative, anti-HBc-positive individuals presented a much lower risk of having already been exposed to HBV and there is no need to screen them for HBV in low to moderate prevalence populations.


Revista Da Sociedade Brasileira De Medicina Tropical | 2002

Imunoblot como teste suplementar para detecção de anticorpos contra o vírus da hepatite C em doadores de sangue

Francisco José Dutra Souto; Luciano Correa Ribeiro; Gustavo Faria Perazolo; Hildenete Monteiro Fortes; Alzira Almeida Saldanha

Supplemental tests using Immunoblot are recommended to improve specificity of anti-HCV by ELISA. In Brazil immunoblot is not officially recommended. Aiming to identify EIA false-positive rate 70 positive EIA anti-HCV blood donors were submitted to 3rd generation immunoblot at Hemocentro of Mato Grosso State where polymerase chain reaction tests are not performed. There were 44 (62.9%) immunoblot-positive, 22 (31.4%) negative and 4 (5.7%) indeterminate. Anti-HCV immunoblot can distinguish blood donors with false-positive ELISA from those who need medical assessment. Our data suggest that immunoblot could be useful in Brazilian blood banks where molecular biology tests are not available.


Revista Da Sociedade Brasileira De Medicina Tropical | 2000

Hepatitis Delta in the State of Mato Grosso, Brazil: report of five cases

Luciano Correa Ribeiro; Francisco José Dutra Souto

Five cases of hepatitis B and D superinfection in teenagers from the northernmost region of Mato Grosso State are reported. Hepatitis B is high prevalent there, but not hepatitis D. The proximity to the States of Acre and Amazonas and intense migration may be introducing the virus into the region. Necessity for the surveillance of hepatitis D in northern Mato Grosso is emphasized.Five cases of hepatitis B and D superinfection in teenagers from the northernmost region of Mato Grosso State are reported. Hepatitis B is high prevalent there, but not hepatitis D. The proximity to the States of Acre and Amazonas and intense migration may be introducing the virus into the region. Necessity for the surveillance of hepatitis D in northern Mato Grosso is emphasized.


American Journal of Tropical Medicine and Hygiene | 2001

Association of subtherapeutic dosages of a standard drug regimen with failures in preventing relapses of vivax malaria

Elisabeth Carmen Duarte; Lorrin W. Pang; Luciano Correa Ribeiro; Cor Jesus Fernandes Fontes

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Cor Jesus Fernandes Fontes

Universidade Federal de Mato Grosso

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Francisco José Dutra Souto

Universidade Federal de Mato Grosso

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Arley Takiuchi

Universidade Federal de Mato Grosso

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Margareth D. Silva

Universidade Federal de Mato Grosso

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Rosane Christine Hahn

Universidade Federal de Mato Grosso

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Tomoko Tadano

Universidade Federal de Mato Grosso

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Edson N.A. Rodrigues Junior

Universidade Federal de Mato Grosso

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Flávio Basili Dias

Universidade Federal de Mato Grosso

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Gustavo Faria Perazolo

Universidade Federal de Mato Grosso

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Hildenete Monteiro Fortes

Universidade Federal de Mato Grosso

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