Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 309
Filtrar
Mais filtros

Tipo de documento
Intervalo de ano de publicação
1.
Ann Hematol ; 99(12): 2903-2909, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32583088

RESUMO

From April 2016, carfilzomib, in combination with lenalidomide and dexamethasone (KRD), became available for use in the daily practice in Italy for patients with relapsed or refractory multiple myeloma (RRMM). We performed a retrospective survey at 14 different institutions from Southern Italy in order to evaluate patient characteristics and treatment results from an unselected series of patients treated accordingly so far. One hundred and twenty-three consecutive patients were included, with a median of 2 previous lines of therapy (range 1-9) and a median age of 63 years (range 39-82). At the time of analysis, median number of courses administered is 11 (range 1-34), and all patients are evaluable for response. Overall response rate including complete remission, very good partial remission, and partial remission is 85%. After a median follow-up of 27 months, median overall and progression-free survival are 33 and 23 months, respectively. Sixty-three patients are alive and between them, 45 (37%) are in continuous remission. Sixty patients have died (49%), mainly from progressive disease. There were 6 treatment-related deaths (5% of the whole patient population). Overall, hematological and non-hematological toxicity were manageable, mostly on outpatient basis. Arterial hypertension has been observed in 43 cases (35%) but did not lead to treatment interruption. Our data demonstrate that in real life, KRD is highly effective and well tolerated in the majority of patients with RRMM.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Dexametasona/administração & dosagem , Lenalidomida/administração & dosagem , Mieloma Múltiplo/tratamento farmacológico , Oligopeptídeos/administração & dosagem , Inquéritos e Questionários , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Hormonais/administração & dosagem , Feminino , Humanos , Fatores Imunológicos/administração & dosagem , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/epidemiologia , Intervalo Livre de Progressão , Estudos Retrospectivos , Resultado do Tratamento
2.
Pharm Stat ; 17(5): 593-606, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29984474

RESUMO

This paper provides an overview of "Improving Design, Evaluation and Analysis of early drug development Studies" (IDEAS), a European Commission-funded network bringing together leading academic institutions and small- to large-sized pharmaceutical companies to train a cohort of graduate-level medical statisticians. The network is composed of a diverse mix of public and private sector partners spread across Europe, which will host 14 early-stage researchers for 36 months. IDEAS training activities are composed of a well-rounded mixture of specialist methodological components and generic transferable skills. Particular attention is paid to fostering collaborations between researchers and supervisors, which span academia and the private sector. Within this paper, we review existing medical statistics programmes (MSc and PhD) and highlight the training they provide on skills relevant to drug development. Motivated by this review and our experiences with the IDEAS project, we propose a concept for a joint, harmonised European PhD programme to train statisticians in quantitative methods for drug development.


Assuntos
Desenvolvimento de Medicamentos/educação , Educação de Pós-Graduação/métodos , Estatística como Assunto/educação , Comportamento Cooperativo , Currículo , Desenvolvimento de Medicamentos/estatística & dados numéricos , Indústria Farmacêutica/organização & administração , Europa (Continente) , Humanos , Setor Privado , Setor Público , Pesquisa/organização & administração
3.
Am J Gastroenterol ; 112(9): 1389-1396, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28440304

RESUMO

OBJECTIVES: Acute liver failure (ALF) is classically defined by coagulopathy and hepatic encephalopathy (HE); however, acute liver injury (ALI), i.e., severe acute hepatocyte necrosis without HE, has not been carefully defined nor studied. Our aim is to describe the clinical course of specifically defined ALI, including the risk and clinical predictors of poor outcomes, namely progression to ALF, the need for liver transplantation (LT) and death. METHODS: 386 subjects prospectively enrolled in the Acute Liver Failure Study Group registry between 1 September 2008 through 25 October 2013, met criteria for ALI: International Normalized Ratio (INR)≥2.0 and alanine aminotransferase (ALT)≥10 × elevated (irrespective of bilirubin level) for acetaminophen (N-acetyl-p-aminophenol, APAP) ALI, or INR≥2.0, ALT≥10x elevated, and bilirubin≥3.0 mg/dl for non-APAP ALI, both groups without any discernible HE. Subjects who progressed to poor outcomes (ALF, death, LT) were compared, by univariate analysis, with those who recovered. A model to predict poor outcome was developed using the random forest (RF) procedure. RESULTS: Progression to a poor outcome occurred in 90/386 (23%), primarily in non-APAP (71/179, 40%) vs. only 14/194 (7.2%) in APAP patients comprising 52% of all cases (13 cases did not have an etiology assigned; 5 of whom had a poor outcome). Of 82 variables entered into the RF procedure: etiology, bilirubin, INR, APAP level and duration of jaundice were the most predictive of progression to ALF, LT, or death. CONCLUSIONS: A majority of ALI cases are due to APAP, 93% of whom will improve rapidly and fully recover, while non-APAP patients have a far greater risk of poor outcome and should be targeted for early referral to a liver transplant center.


Assuntos
Sistemas de Notificação de Reações Adversas a Medicamentos/estatística & dados numéricos , Doença Hepática Induzida por Substâncias e Drogas/epidemiologia , Sistema de Registros , Adulto , Alanina Transaminase/sangue , Doença Hepática Induzida por Substâncias e Drogas/sangue , Doença Hepática Induzida por Substâncias e Drogas/complicações , Interpretação Estatística de Dados , Feminino , Encefalopatia Hepática/complicações , Humanos , Coeficiente Internacional Normatizado , Masculino , Pessoa de Meia-Idade , Prognóstico , Índice de Gravidade de Doença , Estados Unidos/epidemiologia
4.
J Clin Pharm Ther ; 42(5): 646-648, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28543822

RESUMO

WHAT IS KNOWN AND OBJECTIVE: Limited data exist surrounding the metabolism and safety of garlic supplements. CASE DESCRIPTION: A patient with a history of hepatopulmonary syndrome (HPS) and orthotopic liver transplantation was admitted to our surgery transplant service with severe hypoxaemia. The patient was started on high-dose Garlicin Cardio® (Allium sativum) for HPS and soon after had elevated liver function tests. Garlicin Cardio® was discontinued and liver enzymes normalized. A liver biopsy revealed mild periportal cholestatic reaction suggesting potential drug-induced aetiology. WHAT IS NEW AND CONCLUSION: This is the first description of liver injury secondary to garlic supplementation. Therefore, this garlic supplement should be listed as a potential cause of acute drug-induced liver injury.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas/etiologia , Suplementos Nutricionais/efeitos adversos , Alho/efeitos adversos , Transplante de Fígado , Adulto , Alho/química , Síndrome Hepatopulmonar/cirurgia , Humanos , Testes de Função Hepática , Masculino
5.
Analyst ; 142(1): 42-47, 2016 12 19.
Artigo em Inglês | MEDLINE | ID: mdl-27900381

RESUMO

Dry and wet drawing materials were investigated by THz time-domain spectroscopy in transmission mode. Carbon-based and iron-gall inks have been studied, some prepared following ancient recipes and others using current synthetic materials; a commercial ink was studied as well. We measured the THz signals on the thin films of liquid inks deposited on polyethylene pellicles, comparing the results with the thick pellets of dried inks blended with polyethylene powder. This study required the implementation of an accurate experimental method and data analysis procedure able to provide a reliable extraction of the material transmission parameters from a structured sample composed of thin layers, down to a thickness of a few tens of micrometers. THz measurements on thin ink layers enabled the determination of both the absorption and the refractive index in an absolute scale in the 0.1-3 THz range, as well as the layer thickness. THz spectroscopic features of a paper sheet dyed by using one of the iron-gall inks were also investigated. Our results showed that THz time-domain spectroscopy enables the discrimination of various inks on different supports, including the application on paper, together with the proper determination of the absorption coefficients and indices of refraction.

6.
Allergol Immunopathol (Madr) ; 44(3): 197-205, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26589339

RESUMO

BACKGROUND: Asthma is characterised by chronic airway inflammation, a complex cascade of events, mostly sustained by eosinophil recruitment and activation. Fractional exhaled nitric oxide (FeNO) is a surrogate marker of airway inflammation closely associated with bronchial eosinophilia. FeNO is used to define asthma phenotype, to assess eosinophilic inflammatory severity and to predict corticosteroid responsiveness. OBJECTIVE: The aim of this study was to investigate whether FeNO may be associated with some clinical and functional factors in asthmatics evaluated in a real life setting. METHODS: Globally 363 patients (150 males, mean age 46.3 years) with asthma were consecutively evaluated. The following parameters were assessed: history, including comorbidities, physical examination, body mass index (BMI), lung function, asthma control grade, asthma control test (ACT), and FeNO. RESULTS: FeNO values were significantly higher in patients with poorly controlled asthma (p<0.01), asthma symptoms (p=0.015), wheezing (p<0.001), rhinitis diagnosis, (p=0.049) and rhinitis symptoms (p=0.019), but lower in patients with GERD (p=0.024) and pneumonia history (p=0.048). FeNO values increased in patients with the lowest corticosteroid dose (p=0.031). FeNO values>25ppb were associated with poorly controlled asthma (OR 3.71), asthma signs (OR 3.5) and symptoms (OR 1.79). A FeNO value cut-off of 29.9ppb was fairly predictive of (AUC 0.7) poorly controlled asthma. CONCLUSIONS: FeNO assessment in clinical practice may be a useful tool for monitoring asthmatics as it is associated with several clinical factors, including asthma control.


Assuntos
Asma/diagnóstico , Asma/tratamento farmacológico , Eosinofilia/diagnóstico , Glucocorticoides/uso terapêutico , Óxido Nítrico/análise , Adulto , Biomarcadores/análise , Testes Respiratórios , Expiração , Feminino , Glucocorticoides/administração & dosagem , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
7.
Clin Exp Immunol ; 180(1): 40-51, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25418487

RESUMO

Drug-induced liver injury (DILI) is often caused by innate and adaptive host immune responses. Characterization of inflammatory infiltrates in the liver may improve understanding of the underlying pathogenesis of DILI. This study aimed to enumerate and characterize leucocytes infiltrating liver tissue from subjects with acute DILI (n = 32) versus non-DILI causes of acute liver injury (n = 25). Immunostains for CD11b/CD4 (Kupffer and T helper cells), CD3/CD20 (T and B cells) and CD8/CD56 [T cytotoxic and natural killer (NK) cells] were evaluated in biopsies from subjects with acute DILI, either immunoallergic (IAD) or autoimmune (AID) and idiopathic autoimmune (AIH) and viral hepatitis (VH) and correlated with clinical and pathological features. All biopsies showed numerous CD8(+) T cells and macrophages. DILI cases had significantly fewer B lymphocytes than AIH and VH and significantly fewer NK cells than VH. Prominent plasma cells were unusual in IAD (three of 10 cases), but were associated strongly with AIH (eight of nine) and also observed in most with AID (six of nine). They were also found in five of 10 cases with VH. Liver biopsies from subjects with DILI were characterized by low counts of mature B cells and NK cells in portal triads in contrast to VH. NK cells were found only in cases of VH, whereas AIH and VH both showed higher counts of B cells than DILI. Plasma cells were associated most strongly with AIH and less so with AID, but were uncommon in IAD.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas/imunologia , Doença Hepática Induzida por Substâncias e Drogas/patologia , Hepatite Autoimune/imunologia , Hepatite Autoimune/patologia , Hepatite Viral Humana/imunologia , Hepatite Viral Humana/patologia , Doença Aguda , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antígenos CD/imunologia , Linfócitos B/imunologia , Linfócitos B/patologia , Linfócitos T CD8-Positivos/imunologia , Linfócitos T CD8-Positivos/patologia , Criança , Feminino , Humanos , Células Matadoras Naturais/imunologia , Células Matadoras Naturais/patologia , Células de Kupffer/imunologia , Células de Kupffer/patologia , Masculino , Pessoa de Meia-Idade
8.
J Viral Hepat ; 22(5): 481-8, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25311830

RESUMO

With the approval of 2 direct-acting antivirals (DAAs) in 2011 and anticipation of interferon (IFN)-free regimens, more hepatitis C virus (HCV) chronically infected patients are now seeking treatment. To describe the characteristics of newly referred HCV patients in 2011-2012 (Era-2) and compare them to those seen in 1998-1999 (Era-1). Retrospective data were collected from HCV patients newly referred to our tertiary liver clinics. Advanced liver disease was defined as cirrhosis (based on histology or Aspartate aminotransferase-platelet-ratio index (APRI) >2), hepatic decompensation or hepatocellular carcinoma (HCC). A total of 1348 patients (538 in Era-1, 810 in Era-2) were included. Compared to Era-1, Era-2 patients were older (median age 56 vs 45 years), more likely to be black (17.2% vs 11.6%) and had a longer interval between diagnosis and referral (median 4 vs 2 years). Genotype (GT) 1 predominated in both Eras with a significant increase in GT1a from 39.9% in Era-1 to 53.8% in Era-2. A higher per cent of patients in Era-2 were treatment experienced, but 77% had never received treatment. Era-2 patients were more likely to have advanced disease at referral (61.6% vs 51.5%, P < 0.001), with an eightfold higher prevalence of HCC (21.6% vs 2.6%, P < 0.001). HCV patients newly referred in recent years were older, predominantly infected with GT1a and had more advanced liver disease yet only a quarter had received HCV treatment. Reduction in HCV disease burden will require development of treatment regimens targeted towards patients in the current Era as well as increase in diagnosis and referral of patients for treatment.


Assuntos
Hepatite C Crônica/epidemiologia , Hepatite C Crônica/patologia , Fígado/patologia , Aspartato Aminotransferases/sangue , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/patologia , Feminino , Hepatite C Crônica/complicações , Histocitoquímica , Humanos , Cirrose Hepática/complicações , Cirrose Hepática/epidemiologia , Cirrose Hepática/patologia , Falência Hepática/epidemiologia , Falência Hepática/patologia , Masculino , Pessoa de Meia-Idade , Contagem de Plaquetas , Estudos Retrospectivos , Centros de Atenção Terciária , Estados Unidos/epidemiologia
9.
Prog Urol ; 24(1): 46-50, 2014 Jan.
Artigo em Francês | MEDLINE | ID: mdl-24365628

RESUMO

OBJECTIVE: To report our experience in 13 cases with nonpalpable testicular tumors and review the literature. MATERIAL AND METHODS: From 1998 to 2012, 13 patients were diagnosed with nonpalpable testicular tumors. The data base was performed prospectively, and analyzed retrospectively. We evaluated demographic data, clinical presentation, ultrasound tumor features, tumor markers, frozen and final histopathological findings. All patients were also evaluated with serum tumor markers and the surgical approach was inguinal. RESULTS: The mean age was 46.4 years and the most frequent clinical presentation were orchialgia in six patients (46.1%) and infertility in three (23%). All masses were hypoechoic with an average tumor size of 8.9 mm. The serum tumor markers were negative in all patients and the final histopathological findings were six seminomas, two embryonal carcinomas, one seminiferous tubules atrophy, a segmental testicular infarction, a Sertoli cell tumor and a Leydig cell tumor. CONCLUSIONS: Nonpalpable testicular masses were benign in almost half of the cases; therefore, we recommend using the frozen section pathology as a tool to perform conservative surgery in selective cases.


Assuntos
Neoplasias Testiculares/diagnóstico , Adulto , Algoritmos , Reações Falso-Negativas , Humanos , Masculino , Pessoa de Meia-Idade , Palpação , Estudos Retrospectivos
10.
Am J Transplant ; 13(6): 1601-5, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23593993

RESUMO

Recurrent HCV infection following liver transplantation can lead to accelerated allograft injury that is difficult to treat with interferon. The aim of this study is to describe the first ever use of an interferon-free, all oral regimen in a liver transplant recipient with severe recurrent HCV. A 54-year-old male with HCV genotype 1b developed severe cholestatic HCV at 6 months posttransplant with ascites, AST 503 IU/mL, alkaline phosphatase of 298 IU/mL, HCV RNA of 12 000 000 IU/mL, and histological cholestasis with pericellular fibrosis. Sofosbuvir, an HCV polymerase inhibitor (400 mg/day), and daclatasvir, an HCV NS5A replication complex inhibitor (60 mg/day), were co-administered for 24 weeks. Within 4 weeks of initiating treatment, serum HCV RNA levels became undetectable and liver biochemistries normalized with concomitant resolution of ascites. The patient achieved a sustained virological response with undetectable HCV RNA at 9 months posttreatment. During and following treatment, the daily dose and blood level of tacrolimus remained stable and unchanged. The rapid and sustained suppression of HCV replication in this liver transplant recipient provides great promise for the use of combination oral antiviral regimens in other immunosuppressed and interferon refractory HCV patients.


Assuntos
Colestase/tratamento farmacológico , Hepacivirus/genética , Hepatite C Crônica/tratamento farmacológico , Imidazóis/administração & dosagem , Transplante de Fígado , Uridina Monofosfato/análogos & derivados , Carbamatos , Colestase/etiologia , Relação Dose-Resposta a Droga , Quimioterapia Combinada , Seguimentos , Hepatite C Crônica/complicações , Hepatite C Crônica/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Pirrolidinas , RNA Viral/análise , Recidiva , Sofosbuvir , Transplante Homólogo , Uridina Monofosfato/administração & dosagem , Valina/análogos & derivados
11.
J Viral Hepat ; 20(6): 377-84, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23647954

RESUMO

Studies of IL-28B genotype in patients with hepatitis C virus (HCV) genotype 2/3 infection have yielded conflicting results. The aim of this meta-analysis was to obtain a pooled odds ratio (OR) of the impact of IL-28B genotype on achieving sustained virologic response (SVR) in patients with HCV genotype 2/3 infection treated with pegIFN and ribavirin. A meta-analysis with a random effects model was performed, and study heterogeneity and publication bias were assessed. Forty-three percent of the Caucasians (11 studies) and 86% of Asians (five studies) had the favourable IL-28B genotype. In Caucasians, the pooled OR of SVR with the favourable IL-28B genotype was 1.36 (95%CI: 0.98-1.88, P = 0.07) in all patients and 1.55 (95%CI: 1.10-2.18, P = 0.01) in patients treated with pegIFN and ribavirin for ≥24 weeks. In Asians, the pooled OR of SVR in patients with the favourable IL-28B genotype was 1.99 (95%CI: 0.94-4.25, P = 0.07). The favourable IL-28B genotype was also significantly associated with rapid virologic response (RVR) in both groups (Caucasians: OR: 1.82, 95%CI: 1.12-2.96, P = 0.02; Asians: 2.39, 95%CI: 1.39-4.11, P = 0.002), as well as the likelihood of an SVR in a subgroup of 350 Caucasian patients without an RVR (OR: 3.29, 95%CI: 1.67-6.51, P = 0.001). The favourable IL-28B genotype is a statistically significant predictor of SVR and RVR in Caucasian patients treated with pegIFN and ribavirin for 24 weeks. In contrast, the favourable IL-28B genotype is associated with RVR, but not SVR in Asian HCV genotype 2 patients.


Assuntos
Antivirais/uso terapêutico , Hepacivirus/genética , Hepatite C Crônica/etnologia , Interferon-alfa/uso terapêutico , Interleucinas/genética , Polimorfismo de Nucleotídeo Único , Povo Asiático/genética , Predisposição Genética para Doença , Genótipo , Hepacivirus/classificação , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/genética , Humanos , Interferons , Razão de Chances , Polietilenoglicóis , Viés de Publicação , Ribavirina/uso terapêutico , Fatores de Tempo , Resultado do Tratamento , População Branca/genética
12.
J Viral Hepat ; 20(7): 502-9, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23730844

RESUMO

Long-term outcome of patients with chronic hepatitis B virus (HBV) infection under continuous nucleos(t)ide analogues (NUCs) has been poorly elucidated. We enrolled 121 anti-HBe-positive patients into a prospective surveillance programme while on (>36 months) NUCs therapy. HBV-DNA clearance, add-on therapy and safety were evaluated. Development of cirrhosis, events of liver decompensation and hepatocellular carcinoma (HCC) during the follow-up were the main endpoints, as the complication-free survival. At baseline, 74 patients (61%) had chronic hepatitis, the remainders a cirrhotic liver. HBV-DNA levels >38 000 IU/mL were discovered in 103 patients. At enrolment, 79 patients were naïve to NUCs treatment. Lamivudine monotherapy (n = 70) or a different NUC (n = 51) was administered. At month 6 of therapy, HBV-DNA clearance was documented in 88 patients (73%). Treatment schedule was modified in 52 patients due to breakthrough or suboptimal response. During a mean follow-up of 6 ± 3 years, viral clearance was achieved in the majority of patients. Ten of 74 patients (13.5%) with chronic hepatitis progressed to cirrhosis, 1 patient developed a HCC. In the 47 patients with cirrhosis at presentation, HCC occurred in 14 (30%) and liver decompensation in 5 (11%). The 5 and 10-year event-free survivals were, respectively, 89.3% (95% CI, 81.7 -96.9) and 75.6% (95% CI, 61.5 -89.7) for patients with chronic hepatitis, and 70.2% (95% CI, 56.3 -84.1) and 40.4% (95% CI, 16.9 -63.9) for those with cirrhosis. Protracted, effective treatment with oral NUCs affects the natural history of chronic HBV infection by reducing the incidence of cirrhosis and risk of complications, but does not guarantee against the development of HCC in cirrhosis at presentation.


Assuntos
Antivirais/uso terapêutico , Hepatite B Crônica/tratamento farmacológico , Nucleosídeos/uso terapêutico , Adulto , Idoso , Antivirais/efeitos adversos , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/prevenção & controle , DNA Viral/sangue , Feminino , Insuficiência Hepática/epidemiologia , Insuficiência Hepática/prevenção & controle , Hepatite B Crônica/complicações , Humanos , Incidência , Cirrose Hepática/epidemiologia , Cirrose Hepática/prevenção & controle , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/prevenção & controle , Masculino , Pessoa de Meia-Idade , Nucleosídeos/efeitos adversos , Análise de Sobrevida , Resultado do Tratamento , Carga Viral
13.
Dig Dis Sci ; 58(5): 1371-82, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23187978

RESUMO

BACKGROUND: Given the significant side-effects and healthcare costs associated with telaprevir- or boceprevir-combination therapy, identifying patients likely to respond to dual therapy peg-interferon (Peg-IFN)/ribavirin is highly desirable. Since the perception of how large the pool of patients who may achieve rapid virologic response (RVR) is vaguely ascertained, we searched the literature for this information. METHODS: Studies on patients treated with Peg-IFN/ribavirin were identified by searching MEDLINE and analyzed by meta-analysis. The primary end point was weighted estimates of RVR. The influence on race/ethnicity, baseline viremia, type of Peg-IFN, ribavirin dosage, and significant hepatic fibrosis on the results was evaluated. RESULTS: Across 38 studies on 13,219 patients, the fraction of RVR patients was 19.6 %. The only baseline factor influencing RVR was race/ethnicity, with higher rates in Asian (26.7 %) and Caucasian patients (22.5 %). Of the 1,735 RVR patients, 85.1 % attained sustained virologic response (SVR). In these, SVR was influenced by ribavirin dose (86.8 vs. 72.8 % for high or low), type of Peg-IFN (91.8 % for alpha-2b vs. 82.9 % for alpha-2a), and treatment duration (91.7 % for 48 weeks vs. 79.4 % for 24 weeks). CONCLUSIONS: One fifth to one fourth of hepatitis C virus genotype 1 (HCV-1) patients can be safely treated with dual therapy of Peg-IFN/ribavirin, and may be spared from cost and inconvenience of regimens considering the addition of HCV protease inhibitors.


Assuntos
Antivirais/uso terapêutico , Hepatite C Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Polietilenoglicóis/uso terapêutico , Ribavirina/uso terapêutico , Quimioterapia Combinada , Hepacivirus/genética , Hepatite C Crônica/virologia , Humanos , Interferon alfa-2 , Proteínas Recombinantes/uso terapêutico
14.
J Endocrinol Invest ; 36(8): 600-5, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23449040

RESUMO

BACKGROUND AND AIMS: Several studies investigated the possible role of adipokines during chronic viral hepatitis, not producing defined results neither clearly establishing their behavior in course of anti-viral treatment. Our study evaluated blood concentrations of adiponectin and resistin in patients with chronic hepatitis C (CHC), B (CHB), and D (CHD) receiving anti-viral treatment, at baseline and after therapy. METHODS: We examined 122 subjects, divided into two groups: 64 patients with chronic hepatitis C virus (HCV) infection (38 males and 26 females, mean age 47.25 yr) and 58 patients including 39 ones with chronic hepatitis B virus (HBV) infection (26 males and 13 females, mean age 48.46 yr) and 19 ones with chronic HBV-hepatitis D virus (HDV) infection (15 males and 4 females, mean age 45.79 yr). Serum levels of adiponectin and resistin were assayed by enzyme-linked immunosorbent assay. RESULTS: In the group of CHC patients we observed a significant decrease in resistin after therapy (p=0.006), while not a significant increase in adiponectin after treatment (p=0.32). Evaluation of changes in adiponectin and resistin levels after anti-viral treatment, both in responders and non-responders, revealed no significant variations. In the group of HBV+ and HBV-HDV+ patients, we found a decrease in resistin after therapy (p=0.0016) and a not significant reduction in adiponectin after treatment (p=0.13). Furthermore, we noticed a significant reduction of resistin (p=0.006) in the sub-group of responders. CONCLUSIONS: Our data suggested the possible marker role of adiponectin and resistin in the inflammatory process in course of chronic viral hepatitis.


Assuntos
Adiponectina/sangue , Hepatite B Crônica/sangue , Hepatite C Crônica/sangue , Hepatite D Crônica/sangue , Resistina/sangue , Adulto , Antivirais/uso terapêutico , Feminino , Hepatite B Crônica/tratamento farmacológico , Hepatite C Crônica/tratamento farmacológico , Hepatite D Crônica/tratamento farmacológico , Humanos , Interferon-alfa/uso terapêutico , Masculino , Pessoa de Meia-Idade , Polietilenoglicóis/uso terapêutico , Proteínas Recombinantes/uso terapêutico
15.
Genet Mol Res ; 12(2): 1752-60, 2013 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-23765981

RESUMO

An estuary is a transition zone between freshwater and marine ecosystems, resulting in dilution of seawater. Estuaries are also considered environments of intense biological activity related to the processes of nutrient cycling. The aim of this study was to evaluate the microbial community composition along a salinity gradient in the estuary of the Cachoeira River, located in southern Bahia, Brazil. The analysis of bacterial and yeast communities was performed by determining the denaturing gradient gel electrophoresis band richness. Formation of zones with similar profiles of bands was observed, and the increasing richness at the intermediate zone demonstrated a clear spatial distinction of communities depending on salinity. In addition, the dissolved oxygen content, temperature, pH, salinity, and dissolved inorganic nutrient contents (NH3(+), NO2(-), NO3(-), PO4(-)) were determined. Nutrients were distributed in similar patterns, with decreasing concentrations as the salinity increases.


Assuntos
Bactérias/genética , Eletroforese em Gel de Gradiente Desnaturante , Estuários , Rios/microbiologia , Salinidade , Leveduras/genética , Brasil , Variação Genética , Geografia , Análise de Componente Principal
16.
J Viral Hepat ; 19(3): 205-12, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22329375

RESUMO

Medication adherence is important for the success of nucleos(t)ide analogue (NUC) treatment for chronic hepatitis B. The aims of this study were to determine adherence to NUCs and factors associated with NUC adherence and to correlate NUC adherence with the occurrence of virological breakthroughs in patients with chronic hepatitis B. Consecutive patients with chronic hepatitis B receiving NUC were asked to complete a survey every 3 months. Adherence was also assessed by healthcare providers in the clinic. Adherence rate was defined as the per cent of days the patients took their hepatitis B virus medications during the last 30 days. A total of 111 patients were studied. The mean age was 47.7 years, 73.9% were men, 57.7% were Asian, 42.3% had postgraduate education and 80% had private insurance. Sixty-nine (74.1%) patients reported 100% adherence in the survey, while 78 (83.9%) reported 100% adherence to their healthcare providers. Patients with 100% adherence based on the survey were older (P = 0.02), more likely to be men (P = 0.006), and had higher annual household income (P = 0.04) than those with <100% adherence. In the 80 patients who completed three surveys, viral breakthrough was observed in 1/46 (2.2%) with 100% adherence on all three surveys, 1/18 (5.6%) with <100% adherence on one survey and 3/16 (18.8%) with <100% adherence on ≥2 surveys, (P = 0.06). In conclusion, adherence to NUC therapy in our patients with chronic hepatitis B was high but self-reporting of adherence to healthcare providers may be inflated. Patients with chronic hepatitis B with better adherence to NUC therapy had a trend towards a lower rate of viral breakthroughs.


Assuntos
Antivirais/uso terapêutico , Hepatite B Crônica/tratamento farmacológico , Adesão à Medicação , Nucleosídeos/uso terapêutico , Adulto , Idoso , Farmacorresistência Viral , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Adulto Jovem
17.
J Viral Hepat ; 19(6): 404-13, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22571902

RESUMO

To evaluate T cell immunity in advanced liver disease, antigen-specific lymphoproliferative (LP) responses were prospectively studied in the context of the Hepatitis C Antiviral Long-term Treatment against Cirrhosis trial. Peripheral blood responses to hepatitis C virus (HCV), tetanus and Candida protein antigens were measured at baseline, month 12 (M12), M24, M36 and M48 in 186 patients randomized to either low-dose peginterferon-alfa-2a (PEG-IFN) only or observation. Liver histology was evaluated at baseline, M24 and M48. Patients with cirrhosis (Ishak 5-6) were less likely to have positive LP responses to HCV at baseline than patients with fibrosis (15%vs 29%, P = 0.03) and had lower levels of HCV c100 responses at baseline, M24 and M48 (P = 0.11, P = 0.05, P = 0.02, respectively). For 97 patients with complete longitudinal data, the frequency of positive LP responses to HCV, tetanus and Candida antigens declined over time (P < 0.003), and the slope of this decline was greater in the PEG-IFN treatment group than the observation group (P < 0.02). Lower levels of tetanus LP responses were associated with fibrosis progression and clinical outcomes (P = 0.009). Poorer CD4+ T cell proliferative function was associated with more advanced liver disease in chronic hepatitis C and may be further affected by long-term PEG-IFN treatment.


Assuntos
Antígenos Virais/imunologia , Hepatite C Crônica/imunologia , Linfócitos T/imunologia , Antivirais/administração & dosagem , Candida/imunologia , Proliferação de Células , Feminino , Seguimentos , Hepatite C Crônica/tratamento farmacológico , Histocitoquímica , Humanos , Interferon-alfa/administração & dosagem , Fígado/patologia , Masculino , Pessoa de Meia-Idade , Polietilenoglicóis/administração & dosagem , Proteínas Recombinantes/administração & dosagem , Toxina Tetânica/imunologia , Fatores de Tempo
18.
Eur J Clin Microbiol Infect Dis ; 31(4): 523-7, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21792559

RESUMO

We report an outbreak of linezolid-resistant Staphylococcus haemolyticus strains (MIC 32 mg/L) in patients admitted to the Verona University Hospital Intensive Care Unit. The strains proved to be clonally related at pulsed field gel electrophoresis. All the strains showed the G2576T mutation responsible for linezolid-resistance and retained their resistance even after several passages on antibiotic-free medium. After a decade of linezolid use, multifocal emergence of linezolid resistance in coagulase-negative staphylococci has become an important matter of concern and mandates stricter control over the use of this antibiotic in order to preserve its clinical utility.


Assuntos
Acetamidas/farmacologia , Antibacterianos/farmacologia , Surtos de Doenças , Farmacorresistência Bacteriana , Oxazolidinonas/farmacologia , Infecções Estafilocócicas/epidemiologia , Staphylococcus haemolyticus/isolamento & purificação , Idoso , Eletroforese em Gel de Campo Pulsado , Genótipo , Humanos , Unidades de Terapia Intensiva , Itália/epidemiologia , Linezolida , Masculino , Testes de Sensibilidade Microbiana , Tipagem Molecular , Mutação Puntual , Infecções Estafilocócicas/microbiologia , Staphylococcus haemolyticus/efeitos dos fármacos
19.
J Viral Hepat ; 18(11): 792-803, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20726947

RESUMO

Significant liver disease has been reported in chronic hepatitis B patients with normal alanine aminotransferase (ALT) but most studies performed biopsies on selected patients only. The aims of this study were to determine the rate of liver biopsy, characteristics of patients who underwent a biopsy and factors associated with significant liver disease in a cohort of such patients. Records of patients with chronic hepatitis B during a 10-year period were reviewed. Significant liver disease was defined as Knodell HAI ≥ 7 and/or Ishak fibrosis ≥ 3. Of 743 patients, 55.7% were Asian, 56.4% were men, and the mean age was 43.1 years. One hundred and ninety-three (26%) had undergone a biopsy. Biopsied patients were more likely to be men, HBeAg positive, and had lower platelet and higher alkaline phosphatase, bilirubin, ALT and hepatitis B virus (HBV) DNA. Significant liver disease was observed in 20% of patients who had normal ALT at presentation, 14% of those with normal ALT at the time of biopsy and in none of the patients with persistently normal ALT. Patients with normal ALT who were biopsied had higher HBV DNA and higher ALT than those not biopsied. Multivariate analysis showed that low albumin at the time of biopsy and HBV DNA >5 log(10) copies/mL were predictors of significant liver disease. Significant liver disease is rare in patients with chronic HBV and persistently normal ALT and liver histology of chronic HBV infected patients with normal ALT cannot be generalized to other patients with normal ALT that were not biopsied.


Assuntos
Alanina Transaminase/sangue , Hepatite B Crônica , Adulto , Idoso , DNA Viral/sangue , Feminino , Registros de Saúde Pessoal , Vírus da Hepatite B/isolamento & purificação , Hepatite B Crônica/imunologia , Hepatite B Crônica/patologia , Hepatite B Crônica/virologia , Humanos , Fígado/patologia , Fígado/virologia , Cirrose Hepática/patologia , Masculino , Pessoa de Meia-Idade , Albumina Sérica
20.
J Viral Hepat ; 18(7): e206-11, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21692934

RESUMO

Hepatitis B virus (HBV) infection may run undetected. Unawareness of an ongoing infection delays the diagnosis of HBV-related liver disease and favours the spread of the virus. We have evaluated among hepatitis B surface antigen-positive (HBsAg) inpatients admitted to a Southern Italian hospital the proportion of those aware of their carrier status and correlated the status to signs of liver disease. All patients admitted to the San Giovanni Rotondo Hospital from March 2008 to July 2009 were tested for HBV and hepatitis C virus (HCV) markers, and those positive for HBsAg were interviewed and underwent examinations for liver function and abdominal ultrasound. Overall, of 25,000 patients admitted during the observation period 311 (1.2%) were positive for HBsAg, most of them (98%) being anti-HBe positive. HCV and HDV co-infections were ascertained in 2.9% and 0.6% of cases, respectively. Two hundred and fifty-three subjects (81%) agreed to undergo further investigation, 132 of them (52%) were HBV-DNA positive. One hundred and two patients (40.3%) were unaware of their infection; this was encountered among 29% of HBV-DNA-positive and 52% of HBV-DNA-negative subjects (P < 0.01). Subjects already aware of their infection were more likely to present with abnormal alanine aminotransferase (ALT) levels (27%vs 15%), serological presence of HBV-DNA (63.6% vs. 36%) and liver cirrhosis (30%vs. 13%). A high proportion of HBsAg-positive patients (40.3%) were unaware of their infection, which had evolved to the stage of liver cirrhosis in a consistent percentage of them.


Assuntos
Antígenos de Superfície da Hepatite B/sangue , Hepatite B/diagnóstico , Adulto , Idoso , Alanina Transaminase/sangue , Portador Sadio/virologia , DNA Viral/sangue , DNA Viral/imunologia , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Hepatite B/sangue , Hepatite B/patologia , Hepatite B/virologia , Anticorpos Anti-Hepatite B/imunologia , Antígenos de Superfície da Hepatite B/imunologia , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Humanos , Pacientes Internados , Itália , Cirrose Hepática/virologia , Masculino , Pessoa de Meia-Idade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA