Consulta: creatorFacets:"Barone,Antonio Alci"
Registros recuperados: 14
Data/hora: 08/06/2024 12:58:31

Are anti-interferon antibodies the cause of failure in: chronic HCV hepatitis treatment?
Provedor de dados: 55
Autores: Barone,Antonio Alci; Tosta,Rose Aparecida Borges; Tengan,Fátima Mitiko; Marins,José Humberto Caetano; Cavalheiro,Norma de Paula; Cardi,Bruno Andrade.
A follow-up study was made of 94 chronic hepatitis C patients at a hepatitis clinic in Brazil, after interferon alpha (IFN-alpha) therapy, to determine the influence of anti-interferon antibodies on treatment outcome. Patients diagnosed as having chronic hepatitis C, confirmed by PCR (HCV RNA) and liver biopsy, were treated with interferon alpha 2a or 2b for at least six months, and were followed up for 24 weeks after termination of treatment in order to assess biochemical, virological and clinical pathology responses. Only 6% of the 94 patients developed anti-IFN antibodies, 70% presented a biochemical response and 23% maintained a sustained virological response. Clinical evaluation revealed that in only 2 patients was there progression of fibrosis; the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interferon-alpha; Antibodies; Chronic HCV; Treatment.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000100002

Treatment of patients infected with hepatitis C virus and presenting extrahepatic manifestations
Provedor de dados: 55
Autores: Tengan1,Fátima Mitiko; Barone,Antonio Alci.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700018

Consensus of the Brazilian Society of Infectious Diseases on the management and treatment of hepatitis C
Provedor de dados: 55
Autores: Araújo,Evaldo Stanislau Affonso de; Mendonça,João Silva; Barone,Antonio Alci; Gonçales Junior,Fernando Lopes; Ferreira,Marcelo Simão; Focaccia,Roberto; Pawlotsky,Jean-Michel.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000500001

Basic aspects of the treatment for hepatitis C: mechanisms of action of interferon alpha and ribavirin and the bases of individualization
Provedor de dados: 55
Autores: Melo,Carlos Eduardo de; Araújo,Evaldo Stanislau Affonso de; Barone,Antonio Alci.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700014

Detection of HCV by PCR in serum and PBMC of patients with hepatitis C after treatment
Provedor de dados: 55
Autores: Cavalheiro,Norma de Paula; Filgueiras,Thelma Cristina; Melo,Carlos Eduardo; Morimitsu,Suzana Rie; Araújo,Evaldo Stanislau Affonso de; Tengan,Fátima Mitiko; Barone,Antonio Alci.
Although hepatitis C is mainly hepatotropic, some studies suggest that hepatitis C virus (HCV) infects peripheral blood mononuclear cells (PBMC), using them as a reservoir, which might contribute to the development of resistance to treatment. Fifty-four hepatitis-C patients, who had been submitted to treatment, were selected. Blood samples were collected on the same day for the detection of HCV RNA in serum and PBMC by PCR, using the Amplicor HCV 2.0 assay (Roche Diagnostics). HCV genotyping was performed using the INNO-LiPA HCV kit (Versant, Bayer Diagnostics). HCV RNA was detected in both serum and PBMC in 35 (64%) patients and no RNA in 16 (29.6%). Disagreement between the serum and PBMC results was observed for three patients (5.6%), with HCV RNA being...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR; Hepatitis C; PBMC; Treatment.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000500006

Hepatitis C: virological aspects and practical implications
Provedor de dados: 55
Autores: Barone,Antonio Alci.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700005

Maintenance treatment for the modulation of liver fibrosis
Provedor de dados: 55
Autores: Araújo,Evaldo Stanislau Affonso de; Barone,Antonio Alci.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700017

Therapeutic perspectives for hepatitis C
Provedor de dados: 55
Autores: Araújo,Evaldo Stanislau Affonso de; Barone,Antonio Alci; Pawlotsky,Jean-Michel.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700022

Antifibrotic therapy in chronic hepatitis C
Provedor de dados: 55
Autores: Siciliano,Rinaldo Focaccia; Barone,Antonio Alci.
Tipo: Info:eu-repo/semantics/other
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700007

Weight-based combination therapy with peginterferon alpha-2b and ribavirin for Naïve, relapser and non-responder patients with chronic hepatitis C
Provedor de dados: 55
Autores: Gonçales Jr.,Fernando Lopes; Vigani,Aline; Gonçales,Neiva; Barone,Antonio Alci; Araújo,Evaldo; Focaccia,Roberto; Oliveira,Umbeliana; Coelho,Henrique Sérgio Morais; Paixao,Jacqueline; Perez,Renata; Lobato,Cirley; Weirich,Judith; Rosa,Heitor; Borges,Andrelina; Vila,Ricardo; Corrêa-Giannella,Maria Lúcia; Ferraz,Maria Lúcia Gomes.
Combination therapy with pegylated interferon and ribavirin is considered the new standard therapy for naïve patients with chronic hepatitis C. We evaluated the efficacy and safety of treatment with weight-based peginterferon alpha-2b (1.5 mg/kg per week) plus ribavirin (800-1,200 mg/day) for 48 weeks in naïve, relapser and non-responder (to previous treatment with interferon plus ribavirin) patients with chronic hepatitis C. Sixty-seven naïve, 26 relapser and 40 non-responder patients were enrolled. The overall sustained virological response (SVR) for the intention-to-treat population was 54% for naïve, 62% for relapser and 38% for non-responder patients. In the naïve subgroup, SVR was significantly higher in patients with the non-1 genotype (67%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C; Interferon alpha-2b; Therapy.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000500002

Consensus of the Brazilian Society of Infectious Diseases on the management and treatment of hepatitis C
Provedor de dados: 55
Autores: Araújo,Evaldo Stanislau Affonso de; Mendonça,João Silva; Barone,Antonio Alci; Gonçales Junior,Fernando Lopes; Ferreira,Marcelo Simão; Focaccia,Roberto; Pawlotsky,Jean-Michel.
Tipo: Info:eu-repo/semantics/article
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000700001

Hepatitis C virus: molecular and epidemiological evidence of male-to-female transmission
Provedor de dados: 55
Autores: Cavalheiro,Norma de Paula; de La Rosa,Abel; Elagin,Slava; Tengan,Fatima Mitiko; Barone,Antonio Alci.
INTRODUCTION: There is general consensus that hepatitis C virus is efficiently transmitted by the parenteral route, whereas data on viral transmission by sexual or non-sexual intrafamilial contact are conflicting. OBJECTIVE AND METHOD: The aim of this study was to investigate the transmission of hepatitis C virus in nine heterosexual couples. RESULT: The mean age of the couples was 43.7 years. When interviewed, all of the women denied the presence of risk factors for acquisition of the infection, whereas the cause of infection in the nine husbands could be attributed to blood transfusions in two of them (22.2%), use of intravenous and inhaled drugs in six (66.7%), acupuncture in one (11.1%), and tattooing in one (11.1%). All men and none of the women...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sexually transmitted diseases; Phylogeny; Hepatitis C.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000500001

Hepatitis C virus detection in the semen of infected patients
Provedor de dados: 55
Autores: Cavalheiro,Norma de Paula; Santos,Ana Carolina de Oliveira; Melo,Carlos Eduardo; Morimitsu,Suzana Rie; Barone,Antonio Alci.
Though HCV infection is a serious public health problem, some aspects of its biology are still not well understood, such as its transmission through seminal fluid and sexual transmission. We looked for HCV in the semen of infected patients. Thirteen patients were included. Semen fractions (seminal plasma, leukocytes and spermatozoa) were separated with 45% and 90% Percoll gradients. The HCV-RNA in blood and semen fractions was extracted using the same protocol (AMPLICOR Roche) and was detected using the qualitative Roche Amplicor test and by agarose gel electrophoresis, with ethidium bromide staining. The mean age of the patients was 40.7 years. Risk factors for the acquisition of HCV included injectable and inhaled drug use in six (42.8%), blood...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HCV; PCR; Sexual transmission; Semen.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000500003

Hepatitis C treatment: shorter and better?
Provedor de dados: 55
Autores: Araújo,Evaldo Stanislau Affonso de; Courtouké,Cláudia; Barone,Antonio Alci.
Herein, we present a synthesis of two publications that evaluate an abbreviated therapeutic approach to treating chronic hepatitis C virus (HCV) infection. Based on those publications, we discuss the use of the early virologic response (EVR) as a tool for the optimized management of patients under treatment, as well as reviewing concepts of HCV viral kinetics. The fourth-week EVR, characterized by HCV RNA dropping to undetectable levels, allows individuals infected with HCV genotype 1 and presenting low baseline viral loads to be treated with the combination of pegylated interferon and ribavirin for 24 weeks, whereas individuals infected with HCV genotypes 2 or 3 can be treated for only 12 weeks. Therefore, by adopting abbreviated treatment regimens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HCV; Interferon; Viral kinetics.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000100026