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1.
Liver Int ; 42(6): 1386-1400, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35025128

RESUMO

BACKGROUND AND AIMS: Non-O blood group promotes deep vein thrombosis and liver fibrosis in both general population and hepatitis C. We aimed to evaluate the influence of Non-O group on the outcome of Child-Pugh A cirrhotic patients. METHODS: We used two prospective cohorts of Child-Pugh A cirrhosis due to either alcohol or viral hepatitis. Primary end point was the cumulated incidence of 'Decompensation' at 3 years, defined as the occurrence of ascites , hydrothorax, encephalopathy, gastrointestinal bleeding related to portal hypertension, or bilirubin >45 µmol/L. Secondary end points were the cumulated incidences of (1) 'Disease Progression' including a « decompensation¼ or « the occurrence of one or more parameters ¼ among: prothrombin time (PT) <45%, albumin <28 g/L, Child-Pugh worsening (B or C vs A or B, C vs B), hepatorenal syndrome, and hepato-pulmonary syndrome, (2) other events such as non-malignant portal vein thrombosis (nmPVT), and (3) overall survival. RESULTS: Patients (n = 1789; 59.9% Non-O group; 40.1% group O) were followed during a median of 65.4 months. At 3 years cumulated incidence of Decompensation was 8.3% in Non-O group and 7.2% in group O (P = .27). Cumulated incidence of Disease Progression was 20.7% in Non-O group and 18.9% in group O (P = .26). Cumulated incidence of nmPVT was 2.7% in Non-O group and 2.8% in group O (P = .05). At 3 years overall survival was 92.4% in Non-O group and 93.4% in group O (P = 1). CONCLUSION: Non-O group does not influence disease outcome in Child-Pugh A cirrhotic patients. Clinicals trial number NCT03342170.


Assuntos
Sistema ABO de Grupos Sanguíneos , Hipertensão Portal , Progressão da Doença , Humanos , Hipertensão Portal/complicações , Cirrose Hepática , Estudos Prospectivos
2.
J Viral Hepat ; 28(8): 1169-1176, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34002927

RESUMO

Various non-invasive methods have been evaluated in chronic hepatitis B, but none of them have been fully validated for the assessment of liver fibrosis. The issued EASL-ALEH 2015 guidelines provide detailed algorithms based on LSM and ALT serum levels. The aim of our study was to validate the diagnostic accuracy of this algorithm and to better understand discrepancies. Four hundred and thirteen patients from 3 centres were retrospectively included. All included patients were classified for fibrosis stage according to results of a liver biopsy. The overall diagnostic value was expressed with AUROCs given with 95% confidence intervals for the diagnostic targets. For each diagnostic target, optimal cut-offs were determined according to the Youden method. For the population of patients with ALT9 kPa, respectively. For patients with ALT>N but ≤5N (n = 306), AUROCs of transient elastography were 0.79 (0.73-0.84) and 0.84 (0.75-0.92) for F ≥ 2 and F ≥ 3 diagnostic targets. The prevalence of significant fibrosis was, respectively, 15%, 52% and 85% when LSM was <6kPa, between 6 and 12 kPa or >12 kPa. Our study independently validates the EASL-ALEH algorithm based on ALT levels and LSM assessed by transient elastography.


Assuntos
Técnicas de Imagem por Elasticidade , Hepatite B Crônica , Algoritmos , Biópsia , Hepatite B Crônica/complicações , Hepatite B Crônica/diagnóstico por imagem , Hepatite B Crônica/patologia , Humanos , Fígado/diagnóstico por imagem , Fígado/patologia , Cirrose Hepática/diagnóstico por imagem , Cirrose Hepática/patologia , Estudos Retrospectivos
3.
J Hepatol ; 73(6): 1434-1445, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32615276

RESUMO

BACKGROUND & AIMS: Refining hepatocellular carcinoma (HCC) surveillance programs requires improved individual risk prediction. Thus, we aimed to develop algorithms based on machine learning approaches to predict the risk of HCC more accurately in patients with HCV-related cirrhosis, according to their virological status. METHODS: Patients with compensated biopsy-proven HCV-related cirrhosis from the French ANRS CO12 CirVir cohort were included in a semi-annual HCC surveillance program. Three prognostic models for HCC occurrence were built, using (i) Fine-Gray regression as a benchmark, (ii) single decision tree (DT), and (iii) random survival forest for competing risks survival (RSF). Model performance was evaluated from C-indexes validated externally in the ANRS CO22 Hepather cohort (n = 668 enrolled between 08/2012-01/2014). RESULTS: Out of 836 patients analyzed, 156 (19%) developed HCC and 434 (52%) achieved sustained virological response (SVR) (median follow-up 63 months). Fine-Gray regression models identified 6 independent predictors of HCC occurrence in patients before SVR (past excessive alcohol intake, genotype 1, elevated AFP and GGT, low platelet count and albuminemia) and 3 in patients after SVR (elevated AST, low platelet count and shorter prothrombin time). DT analysis confirmed these associations but revealed more complex interactions, yielding 8 patient groups with varying cancer risks and predictors depending on SVR achievement. On RSF analysis, the most important predictors of HCC varied by SVR status (non-SVR: platelet count, GGT, AFP and albuminemia; SVR: prothrombin time, ALT, age and platelet count). Externally validated C-indexes before/after SVR were 0.64/0.64 [Fine-Gray], 0.60/62 [DT] and 0.71/0.70 [RSF]. CONCLUSIONS: Risk factors for hepatocarcinogenesis differ according to SVR status. Machine learning algorithms can refine HCC risk assessment by revealing complex interactions between cancer predictors. Such approaches could be used to develop more cost-effective tailored surveillance programs. LAY SUMMARY: Patients with HCV-related cirrhosis must be included in liver cancer surveillance programs, which rely on ultrasound examination every 6 months. Hepatocellular carcinoma (HCC) screening is hampered by sensitivity issues, leading to late cancer diagnoses in a substantial number of patients. Refining surveillance periodicity and modality using more sophisticated imaging techniques such as MRI may only be cost-effective in patients with the highest HCC incidence. Herein, we demonstrate how machine learning algorithms (i.e. data-driven mathematical models to make predictions or decisions), can refine individualized risk prediction.


Assuntos
Carcinoma Hepatocelular , Regras de Decisão Clínica , Hepatite C/complicações , Cirrose Hepática , Neoplasias Hepáticas , Antivirais/uso terapêutico , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/etiologia , Análise Custo-Benefício , Feminino , França/epidemiologia , Hepatite C/tratamento farmacológico , Hepatite C/epidemiologia , Humanos , Cirrose Hepática/diagnóstico por imagem , Cirrose Hepática/epidemiologia , Cirrose Hepática/etiologia , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/etiologia , Aprendizado de Máquina , Masculino , Pessoa de Meia-Idade , Prognóstico , Medição de Risco/economia , Medição de Risco/métodos , Vigilância de Evento Sentinela
4.
Clin Res Hepatol Gastroenterol ; 44(4): 524-531, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-31839535

RESUMO

BACKGROUND AND AIMS: Markers predicting complications of post-hepatitis C cirrhosis are needed. We asked whether changes in noninvasive markers of fibrosis can predict liver-related complications. METHODS: This was a case-controlled study using a prospective national cohort (ANRS-CO12-CIRVIR) of 1323 HCV-infected patients with compensated cirrhosis: 97 patients who developed liver-related complications such as hepatocellular carcinoma or hepatic decompensation (cases) matched in age, sex and follow-up duration were compared with 257 patients without complications (controls). Actitest/Fibrotest™, Inflameter/Fibrometer™, ELF™ and Fibroscan™ were performed at baseline and yearly. Samples based on Propensity score matching were built and mixed linear models performed. Outcomes in a sustained virological response (SVR) negative population and a SVR-positive population were also described. RESULTS: At baseline, all characteristics of patients were similar between the groups. All fibrosis tests were statistically higher for cases compared to controls, Fibroscan™ excepted: Fibrotest™: 0.83±0.13 vs. 0.77±0.16; Fibrometer™: 0.93±0.07 vs. 0.90±0.11; ELF™: 11.4±1.0 vs. 11.0±1.2 (P<0.02). The mean follow-up was 5.7±1.9 years. Over a 3-year period, the significant difference in fibrosis marker values between cases and controls remained constant; with a trend toward a decrease in inflammation markers in controls, independent of SVR status. CONCLUSIONS: Baseline noninvasive serum fibrosis and inflammation markers were significantly higher in patients developing a complication than in controls. During the follow-up only inflammatory markers decreased in controls, but not in cases, and thus could potentially be used to predict the occurrence of complications in cirrhotic patients.


Assuntos
Hepatite C/complicações , Cirrose Hepática/complicações , Cirrose Hepática/diagnóstico , Hepatopatias/etiologia , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes
5.
Gastroenterology ; 156(4): 997-1009.e5, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30768988

RESUMO

BACKGROUND & AIMS: Management of patients with cirrhosis includes endoscopic screening and surveillance to detect esophageal varices (EV) and prevent bleeding. However, the Baveno VI guidelines recommend avoiding endoscopies for patients with liver stiffness measurements below 20 kPa and platelet counts above 150,000 (favorable Baveno VI status) and endoscopic assessment of patients with higher levels of liver stiffness and platelet counts (unfavorable Baveno VI status). We aimed to validate the Baveno VI guidelines, evaluating outcomes of patients in the ANRS-CO12 CirVir cohort with compensated cirrhosis associated with hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, with or without a sustained response to antiviral therapy. METHODS: We performed an ancillary study using data from 891 patients in the ANRS CO12 CirVir cohort, treated at 35 centers in France, with HCV or HBV infection and biopsy-proven cirrhosis, Child-Pugh A scores, no previous complications, and no hepatocellular carcinoma who underwent an endoscopic procedure and had interpretable liver stiffness measurements and platelet counts. Progression of portal hypertension (PHT) was defined as the onset of varices needing treatment (VNT) or PHT-related bleeding. An sustained response to antiviral therapy was defined as undetectable level of HCV RNA by polymerase chain reaction assay (<50 IU/mL) 12 weeks after the end of treatment (SVR) or an undetectable level of HBV DNA. The primary aims were to validate the Baveno VI guidelines for screening and surveillance of EV in patients with compensated cirrhosis and to study the effects of an SVR on the progression of PHT. RESULTS: A total of 200 patients achieved an SVR (22.4%) (94 patients with HCV infection, 98 patients with HBV infection, and 8 patients with both); 80 of these patients had favorable Baveno VI status and none had VNT. Progression of PHT was studied in 548 patients; during a follow-up period of 61.2 months (interquartile range, 39.5-80.6 months), 105 of these patients (19.1%) had progression of PHT. Lack of an SVR and grade 1 EV were independently associated with progression of PHT. At the time of PHT progression, all patients had unfavorable Baveno VI status. Achieving favorable Baveno VI status after an SVR was associated with the absence of PHT progression. Favorable Baveno VI status and SVR were independently associated with survival. CONCLUSIONS: In an analysis of data from a large cohort of patients with HBV- or HCV-associated cirrhosis in France, we validated the Baveno VI guidelines on screening and surveillance of PHT, even for patients who achieved a sustained response to antiviral therapy.


Assuntos
Varizes Esofágicas e Gástricas/diagnóstico por imagem , Cirrose Hepática/fisiopatologia , Programas de Rastreamento/normas , Vigilância da População , Guias de Prática Clínica como Assunto , Antivirais/uso terapêutico , Progressão da Doença , Técnicas de Imagem por Elasticidade , Endoscopia Gastrointestinal , Varizes Esofágicas e Gástricas/etiologia , Feminino , Hepatite B Crônica/complicações , Hepatite B Crônica/tratamento farmacológico , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Humanos , Hipertensão Portal/etiologia , Cirrose Hepática/complicações , Cirrose Hepática/diagnóstico por imagem , Cirrose Hepática/virologia , Masculino , Pessoa de Meia-Idade , Contagem de Plaquetas , Taxa de Sobrevida , Resposta Viral Sustentada
6.
J Viral Hepat ; 26(3): 384-396, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30380181

RESUMO

Worldwide, hepatocellular carcinoma (HCC) occurs mainly in Asian patients with hepatitis B virus (HBV) infection. This study aimed to decipher the environmental and virological factors associated with HCC occurrence and validate risk scoring systems in a French multicentre prospective cohort of HBV cirrhotic patients. Patients with biopsy-proven Child-Pugh A viral cirrhosis included in the ANRS CO12 CirVir cohort who were HBsAg(+) without hepatitis C coinfection were selected for: (a) interview through a standardized questionnaire reporting coffee consumption and HCC familial history; (b) HBsAg quantification using baseline and sequential 2-year frozen sera; (c) baseline HBV genotype determination; and (d) assessment of risk factors and applicability of HCC risk scores (Kaplan-Meier analysis, Cox models). Among 317 patients studied (261 men, median age 53 years, past or ongoing antiviral treatment 93.3% and baseline detectable HBV DNA in 88 patients), the baseline and 2-year median HBsAg levels were 810 and 463 IU/mL, respectively. After a median follow-up of 65.2 months, 27 HCC cases were diagnosed (annual incidence: 1.6%). Three factors were independently associated with HCC occurrence: age > 50 years, platelets ≤ 150 × 103 /mm3 and body mass index ≥ 30 kg/m2 . Two out of five risk scores were validated, and the most accurate was PAGE-B at 1 year. Moreover, HCC in patients without maintained virological suppression seems more aggressive and less accessible to curative treatment. In conclusion, in French patients with HBV cirrhosis mostly virally suppressed, independent HCC risk factors were host-related (age, obesity) or linked to the severity of cirrhosis (thrombopenia), and the European PAGE-B score was the most accurate risk score.


Assuntos
Antivirais/uso terapêutico , Carcinoma Hepatocelular/etiologia , Hepatite B/tratamento farmacológico , Cirrose Hepática/virologia , Neoplasias Hepáticas/etiologia , Resposta Viral Sustentada , Feminino , Genótipo , Hepatite B/complicações , Hepatite B/genética , Antígenos de Superfície da Hepatite B/sangue , Vírus da Hepatite B , Humanos , Estimativa de Kaplan-Meier , Cirrose Hepática/complicações , Cirrose Hepática/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Prognóstico , Modelos de Riscos Proporcionais , Estudos Prospectivos , Fatores de Risco , Inquéritos e Questionários
7.
Sci Rep ; 8(1): 16559, 2018 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-30410123

RESUMO

Chronic Obstructive Pulmonary Disease (COPD) and Non-Alcoholic Fatty Liver Disease (NAFLD) both independently increase cardiovascular risk. We hypothesized that NAFLD might increase the incidence of cardiovascular disease and death in COPD patients. The relationship between NAFLD, incident cardiovascular events, and death was assessed in a prospective cohort of COPD patients with 5-year follow-up. Noninvasive algorithms combining biological parameters (FibroMax®) were used to evaluate steatosis, non-alcoholic steatohepatitis (NASH) and liver fibrosis. Univariate and multivariate Cox regression models were used to assess the hazard for composite outcome at the endpoint (death or cardiovascular event) for each liver pathology. In 111 COPD patients, 75% exhibited liver damage with a prevalence of steatosis, NASH and fibrosis of 41%, 37% and 61%, respectively. During 5-year follow-up, 31 experienced at least one cardiovascular event and 7 died. In univariate analysis, patients with liver fibrosis had more cardiovascular events and higher mortality (Hazard ratio [95% CI]: 2.75 [1.26; 6.03]) than those with no fibrosis; this remained significant in multivariate analysis (Hazard ratio [95% CI]: 2.94 [1.18; 7.33]). We also found that steatosis and NASH were not associated with increased cardiovascular events or mortality. To conclude, early assessment of liver damage might participate to improve cardiovascular outcomes in COPD patients.


Assuntos
Doenças Cardiovasculares/epidemiologia , Hepatopatia Gordurosa não Alcoólica/epidemiologia , Doença Pulmonar Obstrutiva Crônica/epidemiologia , Idoso , Algoritmos , Doenças Cardiovasculares/mortalidade , Comorbidade , Feminino , França/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/mortalidade , Modelos de Riscos Proporcionais , Estudos Prospectivos , Doença Pulmonar Obstrutiva Crônica/mortalidade , Fatores de Risco
8.
J Hepatol ; 69(6): 1274-1283, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30092234

RESUMO

BACKGROUND & AIMS: More than 90% of cases of hepatocellular carcinoma (HCC) occur in patients with cirrhosis, of which alcohol is a major cause. The CIRRAL cohort aimed to assess the burden of complications in patients with alcoholic cirrhosis, particularly the occurrence of HCC. METHODS: Patients with biopsy-proven compensated alcoholic cirrhosis were included then prospectively followed. The main endpoint was the incidence of HCC. Secondary outcomes were incidence of hepatic focal lesions, overall survival (OS), liver-related mortality and event-free survival (EFS). RESULTS: From October 2010 to April 2016, 652 patients were included in 22 French and Belgian centers. During follow-up (median 29 months), HCC was diagnosed in 43 patients. With the limitation derived from the uncertainty of consecutive patients' inclusion and from a sizable proportion of dropouts (153/652), the incidence of HCC was 2.9 per 100 patient-years, and one- and two-year cumulative incidences of 1.8% and 5.2%, respectively. Although HCC fulfilled the Milan criteria in 33 cases (77%), only 24 patients (56%) underwent curative treatment. An explorative prognostic analysis showed that age, male gender, baseline alpha-fetoprotein, bilirubin and prothrombin were significantly associated with the risk of HCC occurrence. Among 73 deaths, 61 had a recorded cause and 27 were directly attributable to liver disease. At two years, OS, EFS and cumulative incidences of liver-related deaths were 93% (95% CI 90.5-95.4), 80.3% (95% CI 76.9-83.9), and 3.2% (95% CI 1.6-4.8) respectively. CONCLUSION: This large prospective cohort incompletely representative of the whole population with alcoholic cirrhosis showed: a) an annual incidence of HCC of up to 2.9 per 100 patient-years, suggesting that surveillance might be cost effective in these patients; b) a high proportion of HCC detected within the Milan criteria, but only one-half of detected HCC cases were referred for curative treatments; c) a two-year mortality rate of up to 7%. LAY SUMMARY: Cirrhosis is a risk factor for primary liver cancer, leading to recommendations for periodic screening. However, for alcohol-related liver disease the rational of periodic screening for hepatocellular carcinoma (HCC) is controversial, as registry and databased studies have suggested a low incidence of HCC in these patients and highly competitive mortality rates. In this study, a large cohort of patients with biopsy-proven alcoholic cirrhosis prospectively screened for HCC demonstrated a high annual incidence of HCC (2.9%) and a high percentage of small cancers theoretically eligible for curative treatment. This suggests that patients with liver disease related to alcohol should not be ruled out of screening.


Assuntos
Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/etiologia , Cirrose Hepática Alcoólica/complicações , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/etiologia , Fatores Etários , Idoso , Bilirrubina/sangue , Biópsia , Carcinoma Hepatocelular/diagnóstico , Feminino , Seguimentos , Humanos , Incidência , Fígado/patologia , Cirrose Hepática Alcoólica/mortalidade , Neoplasias Hepáticas/diagnóstico , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Intervalo Livre de Progressão , Estudos Prospectivos , Protrombina/análise , Fatores de Risco , Fatores Sexuais , alfa-Fetoproteínas/análise
9.
Gastroenterology ; 155(5): 1436-1450.e6, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30031138

RESUMO

BACKGROUND & AIMS: Retrospective studies have found an unexpectedly high incidence of hepatocellular carcinoma (HCC) among patients with hepatitis C virus (HCV)-associated cirrhosis who received direct-acting antiviral (DAA) agents. We analyzed data from the ANRS CO12 CirVir cohort to compare the incidence of HCC in patients with cirrhosis who received DAA therapy vs patients treated with interferon (IFN). METHODS: Data were collected from 1270 patients with compensated biopsy-proven HCV-associated cirrhosis recruited from 2006 through 2012 at 35 centers in France. For descriptive purpose, patients were classified as follows: patients who received DAA treatment (DAA group, n = 336), patients who achieved a sustained virologic response (SVR) following an IFN-based regimen (SVR-IFN group, n = 495), or patients who never received DAA treatment and never had an SVR following IFN therapy (non-SVR group, n = 439). The patients were included in HCC surveillance programs based on ultrasound examination every 6 months, and clinical and biological data were recorded. To account for confounding by indication due to differences in patient characteristics at treatment initiation, we constructed a time-dependent Cox regression model weighted by the inverse probability of treatment and censoring (IPTCW) to assess the treatment effects of DAA on time until HCC. RESULTS: Compared with patients in the SVR-IFN group, patients in the DAA group were older, higher proportions had diabetes or portal hypertension, and liver function was more severely impaired. The crude 3-year cumulative incidences of HCC were 5.9% in the DAA group, 3.1% in the SVR-IFN group, and 12.7% in the non-SVR group (overall P < .001; unadjusted hazard ratio [HR] for HCC 2.03; 95% confidence interval [CI] 1.07-3.84; P = .030 for the DAA group vs the SVR-IFN group). HCC characteristics were similar among groups. Among patients with HCC, the DAA group received less-frequent HCC screening than the other 2 groups (P = .002). After Cox analyses weighted by the IPTCW, we found no statistically significant increase in risk of HCC associated with DAA use (HR 0.89; 95% CI 0.46-1.73; P = .73). CONCLUSIONS: Analysis of data from the ANRS CO12 CirVir cohort reveals that the apparent increase in HCC incidence observed in patients with cirrhosis treated with DAAs compared with patients who achieved SVR following an IFN therapy can be explained by patient characteristics (age, diabetes, reduced liver function) and lower screening intensity.


Assuntos
Antivirais/efeitos adversos , Carcinoma Hepatocelular/epidemiologia , Hepatite C/tratamento farmacológico , Cirrose Hepática/complicações , Neoplasias Hepáticas/epidemiologia , Idoso , Carcinoma Hepatocelular/etiologia , Feminino , Hepatite C/virologia , Humanos , Incidência , Interferons/uso terapêutico , Neoplasias Hepáticas/etiologia , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Retrospectivos
10.
Gastroenterology ; 155(2): 431-442.e10, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29729258

RESUMO

BACKGROUND & AIMS: Semi-annual surveillance for hepatocellular carcinoma (HCC) is recommended for patients with cirrhosis. We aimed to determine how compliance with HCC surveillance guidelines affects survival times of patients with hepatitis C virus- or hepatitis B virus-associated compensated cirrhosis who developed HCC. METHODS: We collected data from the prospective ANRS CO12 CirVir study, from March 2006 through June 2012, on 1671 patients with biopsy-proven viral cirrhosis and no previous liver complications who were undergoing surveillance for HCC at 35 centers in France. Only 216 patients who developed HCC during the follow-up period were included in the analysis. Patients were considered to be compliant with surveillance guidelines if the time between their last surveillance image evaluation and diagnosis of HCC were fewer than 7 months and noncompliant if this time was 7 months or longer. RESULTS: HCC was detected in 216 patients, at a median follow-up time of 59.7 months. Of these patients, 140 (80.5%) were Barcelona Clinic Liver Cancer stage 0/A, 135 (69.9%) received first-line curative treatment (15 underwent transplantation, 29 underwent resection, 89 received percutaneous ablation, and 2 received resection and percutaneous ablation), and 129 (60.0%) were compliant with surveillance guidelines. Seventy-nine of the patients with HCC died; 49 deaths were associated with tumor progression. After lead-time adjustment, overall survival (OS) time was longer in patients compliant with surveillance guidelines (median OS time, 53.2 months) than noncompliant patients (median OS time, 25.4 months) (P = .0107); this difference remained significant even when we changed lead time assumptions. In multivariate analysis adjusted for a propensity score, compliance with HCC surveillance guidelines was associated with low tumor burden, allocation of curative treatment, and increased OS time compared with noncompliance (hazard ratio for OS, 2.19; 95% confidence interval, 1.16-4.14; P = .0150). CONCLUSIONS: In an analysis of data from the ANRS CO12 CirVir cohort, we associated compliance with HCC surveillance guidelines (fewer than 7 months between image evaluations) with early diagnosis, allocation of curative treatment, and longer adjusted OS of patients with hepatitis C virus- or hepatitis B virus-associated compensated cirrhosis and a diagnosis of HCC.


Assuntos
Carcinoma Hepatocelular/mortalidade , Detecção Precoce de Câncer/normas , Cirrose Hepática/mortalidade , Neoplasias Hepáticas/mortalidade , Idoso , Antivirais/uso terapêutico , Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/virologia , Detecção Precoce de Câncer/estatística & dados numéricos , Feminino , Seguimentos , França/epidemiologia , Fidelidade a Diretrizes/estatística & dados numéricos , Hepacivirus/isolamento & purificação , Vírus da Hepatite B/isolamento & purificação , Humanos , Estimativa de Kaplan-Meier , Fígado/diagnóstico por imagem , Fígado/patologia , Cirrose Hepática/diagnóstico por imagem , Cirrose Hepática/terapia , Cirrose Hepática/virologia , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/virologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Guias de Prática Clínica como Assunto , Estudos Prospectivos
11.
Hepatology ; 68(4): 1245-1259, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29663511

RESUMO

Data on extrahepatic cancers (EHCs) in compensated viral cirrhosis are limited. The objective of the prospective multicenter Agence Nationale de Recherche sur le SIDA et les Hépatites virales CO12 CirVir cohort was to assess the occurrence of all clinical events in patients with compensated viral cirrhosis, including all types of cancer. Patients with the following inclusion criteria were enrolled in 35 French centers: (1) biopsy-proven hepatitis B virus (HBV) or hepatitis C virus (HCV) cirrhosis, (2) Child-Pugh A, or (3) absence of previous liver complications including primary liver cancer (PLC). Patients were followed up prospectively every 6 months. The standardized mortality ratio (SMR) was calculated according to age and gender using 5-year periods. The impact of sustained viral response (SVR) in HCV patients and maintained viral suppression in HBV patients were assessed using time-dependent analysis. A total of 1,671 patients were enrolled between 2006 and 2012 (median age, 54.9 years; men, 67.3%; HCV, 1,323; HBV, 317; HCV-HBV, 31). Metabolic features and excessive alcohol and tobacco consumption were recorded in 15.2%, 36.4%, and 56.4% of cases, respectively. After a median follow-up of 59.7 months, 227 PLCs were diagnosed (5-year cumulative incidence [CumI] 13.4%) and 93 patients developed EHC (14 patients with lymphoid or related tissue cancer and 79 with solid tissue cancer; 5-year EHC CumI, 5.9%). Compared to the general French population, patients were younger at cancer diagnosis, with significantly higher risk of EHC in HCV patients (SMR, 1.31; 95 confidence interval [CI], 1.04-1.64; P = 0.017) and after SVR (SMR = 1.57; 95% CI, 1.08-2.22; P = 0.013). EHC was the fourth leading cause of death in the whole cohort and the first in patients with viral control/eradication. CONCLUSION: Compared to the general French population, HCV cirrhosis is associated with a higher risk of EHC and the first cause of death in patients with viral cirrhosis who achieve virological control/eradication. (Hepatology 2018).


Assuntos
Carcinoma Hepatocelular/virologia , Hepatite B Crônica/tratamento farmacológico , Hepatite C Crônica/tratamento farmacológico , Cirrose Hepática/virologia , Neoplasias Hepáticas/virologia , Neoplasias/mortalidade , Adulto , Idoso , Antivirais/uso terapêutico , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/patologia , Estudos de Coortes , Bases de Dados Factuais , Progressão da Doença , Feminino , França , Hepatite B Crônica/complicações , Hepatite B Crônica/patologia , Hepatite C Crônica/complicações , Hepatite C Crônica/patologia , Humanos , Cirrose Hepática/epidemiologia , Cirrose Hepática/fisiopatologia , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Neoplasias/patologia , Neoplasias/virologia , Prognóstico , Estudos Prospectivos , Medição de Risco , Análise de Sobrevida
12.
Am Heart J ; 198: 4-17, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29653647

RESUMO

BACKGROUND: The objective was to examine the role of a sustained virological response (SVR) on major adverse cardiovascular events (MACEs) in patients with compensated hepatitis C virus (HCV) cirrhosis. METHODS: Patients with the following criteria were enrolled in 35 French centers: (1) biopsy-proven HCV cirrhosis; (2) Child-Pugh A; (3) positive viremia; and (4) no prior liver complication, and then prospectively followed. All patients received HCV treatment after inclusion. MACEs included stroke, myocardial infarction, ischemic heart disease, heart failure, peripheral arterial disease, cardiac arrest, and cardiovascular death. SVR, defined as negative viremia 12 weeks posttreatment, was considered as a time-dependent covariate, and its effect on MACE occurrence was assessed. The median follow up was 57.5 months, ending in December 2015. RESULTS: Sixty-two of 878 (7.1%) patients presented a total of 79 MACEs. The main predictive baseline factors of MACEs were Asian ethnic origin, history of MACEs, arterial hypertension, diabetes mellitus, current smoking, low serum albumin level, high total bilirubin level, and low platelet count. In multivariate analysis, SVR was associated with a decreased risk of MACEs (hazard ratio=0.35, 95% CI 0.09-0.97, P=.044), whereas Asian ethnic origin, arterial hypertension, smoking, and low serum albumin level remained predictive of MACE occurrence. The 5-year survival rate was 60.1% versus 87.5% in patients who did versus those who did not present a MACE (P<.001). CONCLUSIONS: In patients with compensated HCV-related cirrhosis, Asian ethnic origin, arterial hypertension, smoking, and low serum albumin are independent predictive factors of cardiovascular events, whereas an SVR is associated with a decreased rate of cardiovascular events.


Assuntos
Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Cirrose Hepática/complicações , Cirrose Hepática/virologia , Distribuição por Idade , Idoso , Antivirais/uso terapêutico , Biópsia por Agulha , Doenças Cardiovasculares/terapia , Estudos de Coortes , Feminino , França , Hepatite C Crônica/fisiopatologia , Humanos , Imuno-Histoquímica , Estimativa de Kaplan-Meier , Cirrose Hepática/patologia , Testes de Função Hepática , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Distribuição por Sexo , Taxa de Sobrevida
13.
ESMO Open ; 2(4): e000238, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29104762

RESUMO

BACKGROUND: Doxorubicin Transdrug (DT), a nanoformulation of doxorubicin, was demonstrated to overcome the chemoresistance of hepatocellular carcinoma (HCC) in preclinical models. Its efficacy and safety were thus investigated in phase I and randomised phase II trials in unresectable HCC. PATIENTS AND METHODS: Phase I was a single dose of DT through the hepatic intra-arterial (HIA) route, dose-escalating 3+3 trial, evaluating five-dose levels from 10 to 40 mg/m2 with maximal tolerated dose (MTD) as primary endpoint. The multicentre phase II trial randomly assigned (2:1 ratio) patients to receive either 30 mg/m2 of DT through HIA route every 4 weeks for up to three courses or best standard of care (BSC). Progression-free survival (PFS) rate at 3 months was the primary endpoint. Overall survival (OS) and disease control rate (DCR) were secondary endpoints. RESULTS: In phase I, haematological and respiratory limited toxicities were reported at 35 and 40 mg/m2, giving MTD at 30 mg/m2. Partial response rate was 10%, and stable disease 70%. Phase II was discontinued due to three severe acute respiratory distress events in the DT group while 17 patients had received 30 mg/m2 DT and 11 BSC. At 3 months, PFS was 64% (95% CI 31 to 89) vs 75% (95% CI 35 to 97), and DCR 35% vs 27% in DT and BSC, respectively (p=NS). Median OS was 32.6 months (95% CI 8.2 to 34.1) in DT group and 15 months (95% CI 8.0 to 18.8) in BSC group (p<0.05). CONCLUSION: DT increased OS in unresectable HCC but induced severe respiratory distress. Efficacy data deserve further investigation using a safer dosing and schedule regimen. TRIAL REGISTRATION NUMBER: EUDRACT 2006-004088-77; Results.

14.
Eur Respir J ; 49(6)2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28596431

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is independently linked to cardiometabolic morbidity and mortality. Low-grade inflammation, oxidative stress and ectopic fat, common features of chronic obstructive pulmonary disease (COPD), might contribute to the development of NAFLD.We aimed to investigate the prevalence of NAFLD and to evaluate the relationship between various types of liver damage and COPD severity, comorbidities and circulating inflammatory cytokines. Validated noninvasive tests (FibroMax: SteatoTest, NashTest and FibroTest) were used to assess steatosis, nonalcoholic steatohepatitis (NASH) and liver fibrosis. Patients underwent an objective assessment of COPD comorbidities, including sleep studies. Biological parameters included a complete lipid profile and inflammatory markers.In COPD patients the prevalence of steatosis, NASH and fibrosis were 41.4%, 36.9% and 61.3%, respectively. In multivariate analysis, SteatoTest and FibroTest were significantly associated with sex, body mass index (BMI), untreated sleep apnoea and insulin resistance, and, in addition, COPD Global Initiative for Chronic Obstructive Lung Disease stage for SteatoTest. Patients with steatosis had higher tumour necrosis factor-α levels and those with NASH or a combination of liver damage types had raised leptin levels after adjustment for age, sex and BMI.We concluded that NAFLD is highly prevalent in COPD and might contribute to cardiometabolic comorbidities.


Assuntos
Hepatopatia Gordurosa não Alcoólica/fisiopatologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Adiponectina/metabolismo , Idoso , Índice de Massa Corporal , Proteína C-Reativa/metabolismo , Estudos de Coortes , Comorbidade , Feminino , Humanos , Inflamação , Resistência à Insulina , Interleucina-6/metabolismo , Leptina/metabolismo , Cirrose Hepática/patologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estresse Oxidativo , Resistina/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
15.
Gut ; 66(2): 330-341, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-26511797

RESUMO

OBJECTIVE: To assess incidence and prognostic significance of bacterial infections (BIs) occurring in compensated viral cirrhosis. DESIGN: This prospective study involved 35 French centres. Inclusion criteria were biopsy-proven HCV or HBV cirrhosis, Child-Pugh A and no previous hepatic complications. Cumulative incidence (CumI) of events was estimated in a competing risks framework. RESULTS: 1672 patients were enrolled (HCV 1323, HBV 318, HCV-HBV 31). During a median follow-up of 43 months, 234 BIs occurred in 171 patients (5 year CumI: 12.9%), among whom 14.6% had septic shock. Main localisations included the urinary tract (27.4%), lung (25.2%) and peritoneum (10.7%) (other, 86 (36.7%)). Most BIs occurred as a first event prior to liver decompensation (n=140, 81.8%) and were community-acquired (CA, 84.2%). The risk of BI was higher in patients with HCV than in patients with HBV (5 year CumI: 15.2% vs 5.5%, p=0.0008). Digestive localisation, concomitant interferon-based treatment, isolation of resistant bacteria and non-CA BIs were associated with lowest probability of resolution. The occurrence of a first BI impaired survival in patients infected with HCV (5 year survival: 60.2% vs 90.4%, p<0.001) and patients infected with HBV (5 year survival: 69.2% vs 97.6%, p<0.001). BIs represented the third cause of death (14.1%) after liver failure and liver cancer. BI risk factors comprised older age, lower albumin, proton pump inhibitor intake and absence of virological eradication/control. CONCLUSION: BI mostly occurs as a first complication and represents a turning point in the course of compensated viral cirrhosis. Its occurrence impacts long-term prognosis and may define a subgroup of patients in whom adaptation of management is warranted.


Assuntos
Infecções Bacterianas/mortalidade , Coinfecção/mortalidade , Cirrose Hepática/mortalidade , Cirrose Hepática/fisiopatologia , Neoplasias Hepáticas/mortalidade , Adulto , Causas de Morte , Feminino , França/epidemiologia , Hepatite B Crônica/complicações , Hepatite C Crônica/complicações , Humanos , Incidência , Cirrose Hepática/virologia , Falência Hepática/mortalidade , Masculino , Pessoa de Meia-Idade , Peritonite/microbiologia , Peritonite/mortalidade , Pneumonia/mortalidade , Prognóstico , Estudos Prospectivos , Fatores de Risco , Índice de Gravidade de Doença , Taxa de Sobrevida , Infecções Urinárias/mortalidade
16.
Gastroenterology ; 152(1): 142-156.e2, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27641509

RESUMO

BACKGROUND & AIMS: We performed a prospective study to investigate the effects of a sustained viral response (SVR) on outcomes of patients with hepatitis C virus (HCV) infection and compensated cirrhosis. METHODS: We collected data from 1323 patients included in the prospective Agence Nationale pour la Recherche sur le SIDA et les hépatites virales (ANRS) viral cirrhosis (CirVir) cohort, recruited from 35 clinical centers in France from 2006 through 2012. All patients had HCV infection and biopsy-proven cirrhosis, were Child-Pugh class A, and had no prior liver complications. All patients received anti-HCV treatment before or after inclusion (with interferon then with direct antiviral agents) and underwent an ultrasound examination every 6 months, as well as endoscopic evaluations. SVR was considered as a time-dependent covariate; its effect on outcome was assessed by the Cox proportional hazard regression method. We used a propensity score to minimize confounding by indication of treatment and capacity to achieve SVR. RESULTS: After a median follow-up period of 58.2 months, 668 patients (50.5%) achieved SVR. SVR was associated with a decreased incidence of hepatocellular carcinoma (hazard ratio [HR] compared with patients without an SVR, 0.29; 95% confidence interval [CI], 0.19-0.43; P < .001) and hepatic decompensation (HR, 0.26; 95% CI, 0.17-0.39; P < .001). Patients with SVRs also had a lower risk of cardiovascular events (HR, 0.42; 95% CI, 0.25-0.69; P = .001) and bacterial infections (HR, 0.44; 95% CI, 0.29-0.68; P < .001). Metabolic features were associated with a higher risk of hepatocellular carcinoma in patients with SVRs, but not in patients with viremia. SVR affected overall mortality (HR, 0.27 compared with patients without SVR; 95% CI, 0.18-0.42; P < .001) and death from liver-related and non-liver-related causes. Similar results were obtained in a propensity score-matched population. CONCLUSIONS: We confirmed a reduction in critical events, liver-related or not, in a prospective study of patients with HCV infection and compensated cirrhosis included in the CirVir cohort who achieved an SVR. We found an SVR to reduce overall mortality and risk of death from liver-related and non-liver-related causes. A longer follow-up evaluation is required to accurately describe and assess specific risk factors for complications in this population.


Assuntos
Antivirais/uso terapêutico , Carcinoma Hepatocelular/epidemiologia , Hepatite C/tratamento farmacológico , Cirrose Hepática/fisiopatologia , Neoplasias Hepáticas/epidemiologia , Resposta Viral Sustentada , Idoso , Aspartato Aminotransferases/sangue , Infecções Bacterianas/epidemiologia , Índice de Massa Corporal , Carcinoma Hepatocelular/mortalidade , Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus/epidemiologia , Dislipidemias/epidemiologia , Feminino , Seguimentos , França/epidemiologia , Hepatite C/complicações , Hepatite C/mortalidade , Humanos , Incidência , Cirrose Hepática/complicações , Cirrose Hepática/mortalidade , Neoplasias Hepáticas/mortalidade , Masculino , Síndrome Metabólica/epidemiologia , Pessoa de Meia-Idade , Contagem de Plaquetas , Estudos Prospectivos , Tempo de Protrombina , gama-Glutamiltransferase/sangue
17.
Hepatology ; 64(4): 1136-47, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27348075

RESUMO

UNLABELLED: The aim of this work was to develop an individualized score for predicting hepatocellular carcinoma (HCC) in patients with hepatitis C (HCV)-compensated cirrhosis. Among 1,323 patients with HCV cirrhosis enrolled in the French prospective ANRS CO12 CirVir cohort, 720 and 360 were randomly assigned to training and validation sets, respectively. Cox's multivariate model was used to predict HCC, after which a nomogram was computed to assess individualized risk. During follow-up (median, 51.0 months), 103 and 39 patients developed HCC in the training and validation sets, respectively. Five variables were independently associated with occurrence of HCC: age > 50 years (hazard ratio [HR], 1.94; 95% confidence interval [CI], 1.16; 3.25; P = 0.012); past excessive alcohol intake (HR, 1.55; 95% CI, 1.02; 2.36; P = 0.041); low platelet count (<100 Giga/mm(3) : HR, 2.70; 95% CI, 1.62; 4.51; P < 0.001; [100; 150] Giga/mm(3) : HR, 1.87; 95% CI, 1.10; 3.18; P = 0.021); gamma-glutamyl transpeptidase above the upper limit of normal (HR, 1.96; 95% CI, 1.11; 3.47; P = 0.021); and absence of a sustained virological response during follow-up (HR, 3.02; 95% CI, 1.67; 5.48; P < 0.001). An 11-point risk score was derived from the training cohort and validated in the validation set. Based on this score, the population was stratified into three groups, in which HCC development gradually increased, from 0% to 30.1% at 5 years for patients with the lowest (≤3) and highest (≥8) scores (P < 0.001). Using this score, a nomogram was built enabling individualized prediction of HCC occurrence at 1, 3, and 5 years. CONCLUSION: This HCC score can accurately predict HCC at an individual level in French patients with HCV cirrhosis. (Hepatology 2016;64:1136-1147).


Assuntos
Carcinoma Hepatocelular/etiologia , Hepatite C Crônica/complicações , Cirrose Hepática/complicações , Neoplasias Hepáticas/etiologia , Nomogramas , Carcinoma Hepatocelular/epidemiologia , Feminino , Humanos , Cirrose Hepática/virologia , Neoplasias Hepáticas/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
18.
Respirology ; 21(2): 378-85, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26567858

RESUMO

BACKGROUND AND OBJECTIVE: Obstructive sleep apnoea (OSA) could be an independent risk factor for non-alcoholic fatty liver disease (NAFLD) occurrence and progression. The impact of continuous positive airway pressure (CPAP) treatment on non-invasive markers of NAFLD has not been studied. The aim of this study was to evaluate the effect of 6-12 weeks of effective CPAP on the FibroMax test (comprising components including the SteatoTest, NashTest and FibroTest) through three randomized sham controlled studies. METHODS: The FibroMax test was performed in 103 obstructive sleep apnoea patients (apnoea + hypopnoea index > 15/h) enrolled in a randomized study comparing sham versus effective CPAP. RESULTS: At baseline, 40.4% of patients in the sham CPAP group and 45.5% in the CPAP group exhibited liver steatosis. Furthermore, 39.6% of patients in the sham CPAP group and 58.4% in the CPAP group displayed borderline or possible non-alcoholic steatohepatitis (NASH). Six to twelve weeks of effective CPAP did not demonstrate any impact on reducing steatosis, NASH or liver fibrosis even after adjustment for gender, BMI, baseline apnoea + hypopnoea index and severity of liver injury. CONCLUSION: A number of non-invasive markers of liver damage are increased in untreated obstructive sleep apnoea patients, potentially contributing to cardiometabolic risk, but they do not improve after 6-12 weeks of effective CPAP treatment. CLINICAL TRIAL REGISTRATION: NCT01196845 (ADISAS), NCT00464659 (MneSAS) and NCT00669695 (StatinflaSAS) at ClinicalTrials.gov.


Assuntos
Pressão Positiva Contínua nas Vias Aéreas , Hepatopatia Gordurosa não Alcoólica/sangue , Apneia Obstrutiva do Sono/sangue , Apneia Obstrutiva do Sono/terapia , Biomarcadores/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/etiologia , Fatores de Risco , Apneia Obstrutiva do Sono/complicações , Resultado do Tratamento
19.
Liver Int ; 36(3): 434-44, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26215124

RESUMO

BACKGROUND: Chronic liver inflammation and immune/inflammatory response promote hepatocellular carcinoma. The aim of this study was to characterize the immune status of HCV-related cirrhosis in patients with hepatocellular carcinoma (HCV-HCC) as compared to HCV patients without hepatocellular carcinoma. METHOD: Immune markers (CD3, CD4, CD8, CD20, CD56, TCRγδ, FoxP3) and gene expression profiles (CD8α, CD8ß, FoxP3, IL-6, IFN-γ, perforin, RANTES) were analysed in a test cohort by immunohistochemistry and quantitative RT-PCR analysis on serial non-tumorous and tumorous tissues. RESULTS: Immune micro-environment was more inflammatory in HCV-HCC than HCV cirrhotic livers. The number of CD3(+) , CD4(+) , CD8(+) and CD20(+) liver-infiltrating lymphocytes was significantly higher, whereas the number of CD56(+) cells was significantly lower in HCV-HCC compared to HCV cirrhotic parenchyma. These differences were restricted to fibrous septa for CD4(+) and CD20(+) cells and to nodular parenchyma for CD8(+) cells. Gene expressions of CD8α, FoxP3 and RANTES were also significantly higher in HCV-HCC than in HCV cirrhosis. Interestingly, in a large cohort of 63 HCV-HCC patients. The number of CD8(+) cells ≥100/field was associated with significant higher tumour recurrence (P = 0.003) and lower overall survival (P = 0.05) at 5 years. CONCLUSION: High densities of liver-infiltrating lymphocytes in HCV-HCC cirrhotic parenchyma prevail inflammatory conditions and could contribute to tumorigenesis and tumour recurrence. These results could contribute towards better clinical evaluation of patients susceptible for HCC recurrence after curative surgery.


Assuntos
Linfócitos T CD8-Positivos/imunologia , Carcinoma Hepatocelular/imunologia , Hepatite C/complicações , Cirrose Hepática/imunologia , Neoplasias Hepáticas/imunologia , Fígado/imunologia , Linfócitos do Interstício Tumoral/imunologia , Recidiva Local de Neoplasia , Adulto , Idoso , Biomarcadores Tumorais/análise , Biomarcadores Tumorais/genética , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/virologia , Feminino , França , Humanos , Imuno-Histoquímica , Mediadores da Inflamação/análise , Estimativa de Kaplan-Meier , Fígado/patologia , Fígado/virologia , Cirrose Hepática/genética , Cirrose Hepática/patologia , Cirrose Hepática/virologia , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/virologia , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Reação em Cadeia da Polimerase em Tempo Real , Fatores de Risco , Microambiente Tumoral
20.
PLoS One ; 10(10): e0140900, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26502286

RESUMO

The Hepatitis C virus (HCV) infection exhibits a high global prevalence frequently associated with hepatocellular carcinoma, taking years to develop. Despite the standardization of highly sensitive HCV quantitative RT-PCR (qRT-PCR) detection methods, false-negative diagnoses may be generated with current methods, mainly due to the presence of PCR inhibitors and/or low viral loads in the patient's sample. These false-negative diagnoses impact both public health systems, in developing countries, and an in lesser extent, in developed countries, including both the risk of virus transmission during organ transplantation and/or blood transfusion and the quality of the antiviral treatment monitoring. To adopt an appropriate therapeutic strategy to improve the patient's prognosis, it is urgent to increase the HCV detection sensitivity. Based upon previous studies on HBV, we worked on the capacity of the scavenger acute phase protein, Apolipoprotein H (ApoH) to interact with HCV. Using different approaches, including immunoassays, antibody-inhibition, oxidation, ultracentrifugation, electron microscopy and RT-PCR analyses, we demonstrated specific interactions between HCV particles and ApoH. Moreover, when using a two-step HCV detection process, including capture of HCV by ApoH-coated nanomagnetic beads and a home-made real-time HCV-RT-PCR, we confirmed the presence of HCV for all samples from a clinical collection of HCV-seropositive patients exhibiting an RT-PCR COBAS® TaqMan® HCV Test, v2.0 (COBAS)-positive result. In contrast, for HCV-seropositive patients with either low HCV-load as determined with COBAS or exhibiting HCV-negative COBAS results, the addition of the two-step ApoH-HCV-capture and HCV-detection process was able to increase the sensitivity of HCV detection or more interestingly, detect in a genotype sequence-independent manner, a high-proportion (44%) of HCV/RNA-positive among the COBAS HCV-negative patients. Thus, the immune interaction between ApoH and HCV could be used as a sample preparation tool to enrich and/or cleanse HCV patient's samples to enhance the detection sensitivity of HCV and therefore significantly reduce the numbers of false-negative HCV diagnosis results.


Assuntos
Proteínas de Fase Aguda/metabolismo , Hepacivirus/metabolismo , Hepatite C/diagnóstico , beta 2-Glicoproteína I/metabolismo , Proteínas de Fase Aguda/imunologia , Centrifugação com Gradiente de Concentração/métodos , Reações Falso-Negativas , Hepacivirus/imunologia , Humanos , Técnicas Imunoenzimáticas/métodos , Microscopia Eletrônica , Reação em Cadeia da Polimerase em Tempo Real/métodos , Sensibilidade e Especificidade , beta 2-Glicoproteína I/imunologia
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