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1.
J Viral Hepat ; 25(2): 152-160, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29159841

RESUMEN

In order to accurately assess the burden of hepatitis C (HCV) and develop effective interventions, we must understand the magnitude and trends of mortality related to the disease. In the United States, HCV-related mortality is continuously increasing. We have no comparable data for Switzerland and other European countries, although a modelling study predicted a similar increase. We analysed time trends (1 January 1995-31 December 2014) in HCV-specific mortality rates in the Swiss general population using the death registry of the Swiss Federal Statistical Office (SFSO). We compared HCV-related mortality to HIV-related and hepatitis B (HBV)-related mortality. To determine potential under-reporting in HCV-related mortality, we probabilistically linked the SFSO data to persons who died in the Swiss Hepatitis C Cohort Study (SCCS). SFSO data showed that HCV-related mortality more than doubled between 1995 and 2003, but has since stabilized at ~2.5/100 000 person-years. Since 2000, HCV-related mortality has been higher than HIV-related mortality and was about fivefold higher in 2014. HBV-related mortality remained low at ~0.5/100 000 person-years. Of 4556 persons in the SCCS, 421 have died and 86.2% could be linked to the death registry. According to the SCCS, 133 deaths were HCV-related. HCV was not mentioned on the SFSO death certificate of 45% of these (n = 60/133). In conclusion, HCV-related mortality remained constant, possibly because quality of care was high, or because of under-reporting or because mortality has not yet increased. However, HCV-related mortality is now much higher than HIV- and HBV-related mortality, and under-reporting was common.


Asunto(s)
Hepatitis C Crónica/mortalidad , Hepatitis C/mortalidad , Sistema de Registros , Adulto , Estudios de Cohortes , Femenino , Infecciones por VIH/mortalidad , Humanos , Masculino , Persona de Mediana Edad , Suiza/epidemiología , Estados Unidos/epidemiología
2.
Pharmacogenomics J ; 17(1): 69-75, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-26644205

RESUMEN

Metabolic syndrome after transplantation is a major concern following solid organ transplantation (SOT). The CREB-regulated transcription co-activator 2 (CRTC2) regulates glucose metabolism. The effect of CRTC2 polymorphisms on new-onset diabetes after transplantation (NODAT) was investigated in a discovery sample of SOT recipients (n1=197). Positive results were tested for replication in two samples from the Swiss Transplant Cohort Study (STCS, n2=1294 and n3=759). Obesity and other metabolic traits were also tested. Associations with metabolic traits in population-based samples (n4=46'186, n5=123'865, n6>100,000) were finally analyzed. In the discovery sample, CRTC2 rs8450-AA genotype was associated with NODAT, fasting blood glucose and body mass index (Pcorrected<0.05). CRTC2 rs8450-AA genotype was associated with NODAT in the second STCS replication sample (odd ratio (OR)=2.01, P=0.04). In the combined STCS replication samples, the effect of rs8450-AA genotype on NODAT was observed in patients having received SOT from a deceased donor and treated with tacrolimus (n=395, OR=2.08, P=0.02) and in non-kidney transplant recipients (OR=2.09, P=0.02). Moreover, rs8450-AA genotype was associated with overweight or obesity (n=1215, OR=1.56, P=0.02), new-onset hyperlipidemia (n=1007, OR=1.76, P=0.007), and lower high-density lipoprotein-cholesterol (n=1214, ß=-0.08, P=0.001). In the population-based samples, a proxy of rs8450G>A was significantly associated with several metabolic abnormalities. CRTC2 rs8450G>A appears to have an important role in the high prevalence of metabolic traits observed in patients with SOT. A weak association with metabolic traits was also observed in the population-based samples.


Asunto(s)
Síndrome Metabólico/epidemiología , Síndrome Metabólico/genética , Trasplante de Órganos/efectos adversos , Polimorfismo de Nucleótido Simple , Factores de Transcripción/genética , Diabetes Mellitus/epidemiología , Diabetes Mellitus/genética , Dislipidemias/epidemiología , Dislipidemias/genética , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Heterocigoto , Homocigoto , Humanos , Incidencia , Modelos Lineales , Modelos Logísticos , Síndrome Metabólico/diagnóstico , Análisis Multivariante , Obesidad/epidemiología , Obesidad/genética , Oportunidad Relativa , Fenotipo , Prevalencia , Medición de Riesgo , Factores de Riesgo , Suiza/epidemiología , Factores de Tiempo , Resultado del Tratamiento
3.
Ann Oncol ; 27(5): 856-61, 2016 05.
Artículo en Inglés | MEDLINE | ID: mdl-26884590

RESUMEN

BACKGROUND: Sorafenib (S), a multitargeted tyrosine kinase inhibitor, is the standard of care for first-line systemic treatment of advanced hepatocellular carcinoma (HCC). Everolimus (E) is a potent inhibitor of mTOR, a pathway frequently activated in HCC. Preclinical data suggest that the combination S + E has additive effects compared with single-agent S. PATIENTS AND METHODS: Patients with unresectable or metastatic HCC and Child-Pugh ≤7 liver dysfunction were randomized to receive daily S 800 mg alone or with E 5 mg until progression or unacceptable toxicity. The primary end point was progression-free survival at 12 weeks (PFS12). The secondary end points included response rate, PFS, time to progression (TTP), overall survival (OS), duration of disease stabilization (DDS), safety, and quality-of-life (QoL) assessments. RESULTS: A total of 106 patients were randomized: 46 patients received S and 60 patients received S + E. Ninety-three patients were assessable for the primary end point and 105 patients for the safety analysis. The PFS12 rate was 70% [95% confidence interval (CI) 54-83] and 68% (95% CI 53-81) in patients randomized to S and S + E, respectively. The RECIST (mRECIST) response rate was 0% (23%) in the S arm and 10% (35%) in the S + E arm. Median PFS (6.6 versus 5.7 months), TTP (7.6 versus 6.3 months), DDS (6.7 versus 6.7 months), and OS (10 versus 12 months) were similar in the S and S + E arms, respectively. Grade 3/4 adverse events occurred in 72% and 86% of patients in arm S and arm S + E, respectively. Patients had similar QoL scores over time, except for a greater worsening in physical well-being and mood in the arm S + E. CONCLUSIONS: No evidence was found that S + E improves the efficacy compared with S alone. Combining 5 mg E with full-dose S is feasible, but more toxic than S alone. Further testing of this drug combination in molecularly unselected HCCs appears unwarranted. CLINICALTRIALSGOV: NCT01005199.


Asunto(s)
Carcinoma Hepatocelular/tratamiento farmacológico , Everolimus/administración & dosificación , Neoplasias Hepáticas/tratamiento farmacológico , Niacinamida/análogos & derivados , Compuestos de Fenilurea/administración & dosificación , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Carcinoma Hepatocelular/patología , Supervivencia sin Enfermedad , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/clasificación , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/patología , Femenino , Humanos , Neoplasias Hepáticas/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Niacinamida/administración & dosificación , Sorafenib
4.
J Viral Hepat ; 23(3): 227-31, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26572686

RESUMEN

Faldaprevir, a hepatitis C virus (HCV) NS3/4A protease inhibitor, was evaluated in HCV genotype 1-infected patients who failed peginterferon and ribavirin (PegIFN/RBV) treatment during one of three prior faldaprevir trials. Patients who received placebo plus PegIFN/RBV and had virological failure during a prior trial were enrolled and treated in two cohorts: prior relapsers (n = 43) and prior nonresponders (null responders, partial responders and patients with breakthrough; n = 75). Both cohorts received faldaprevir 240 mg once daily plus PegIFN/RBV for 24 weeks. Prior relapsers with early treatment success (ETS; HCV RNA <25 IU/mL detectable or undetectable at week 4 and <25 IU/mL undetectable at week 8) stopped treatment at week 24. Others received PegIFN/RBV through week 48. The primary efficacy endpoint was sustained virological response (HCV RNA <25 IU/mL undetectable) 12 weeks post treatment (SVR12). More prior nonresponders than prior relapsers had baseline HCV RNA ≥ 800,000 IU/mL (80% vs 58%) and a non-CC IL28B genotype (91% vs 70%). Rates of SVR12 (95% CI) were 95.3% (89.1, 100.0) among prior relapsers and 54.7% (43.4, 65.9) among prior nonresponders; corresponding ETS rates were 97.7% and 65.3%. Adverse events led to faldaprevir discontinuations in 3% of patients. The most common Division of AIDS Grade ≥ 2 adverse events were anaemia (13%), nausea (10%) and hyperbilirubinaemia (9%). In conclusion, faldaprevir plus PegIFN/RBV achieved clinically meaningful SVR12 rates in patients who failed PegIFN/RBV in a prior trial, with response rates higher among prior relapsers than among prior nonresponders. The adverse event profile was consistent with the known safety profile of faldaprevir.


Asunto(s)
Antivirales/administración & dosificación , Hepacivirus/clasificación , Hepatitis C Crónica/tratamiento farmacológico , Interferón-alfa/administración & dosificación , Oligopéptidos/administración & dosificación , Ribavirina/administración & dosificación , Terapia Recuperativa/métodos , Tiazoles/administración & dosificación , Adulto , Anciano , Ácidos Aminoisobutíricos , Femenino , Genotipo , Hepacivirus/genética , Hepacivirus/aislamiento & purificación , Hepatitis C Crónica/virología , Humanos , Leucina/análogos & derivados , Masculino , Persona de Mediana Edad , Placebos/administración & dosificación , Prolina/análogos & derivados , Quinolinas , Resultado del Tratamiento
5.
Gut ; 64(10): 1605-15, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25214320

RESUMEN

OBJECTIVE: The natural course of chronic hepatitis C varies widely. To improve the profiling of patients at risk of developing advanced liver disease, we assessed the relative contribution of factors for liver fibrosis progression in hepatitis C. DESIGN: We analysed 1461 patients with chronic hepatitis C with an estimated date of infection and at least one liver biopsy. Risk factors for accelerated fibrosis progression rate (FPR), defined as ≥ 0.13 Metavir fibrosis units per year, were identified by logistic regression. Examined factors included age at infection, sex, route of infection, HCV genotype, body mass index (BMI), significant alcohol drinking (≥ 20 g/day for ≥ 5 years), HIV coinfection and diabetes. In a subgroup of 575 patients, we assessed the impact of single nucleotide polymorphisms previously associated with fibrosis progression in genome-wide association studies. Results were expressed as attributable fraction (AF) of risk for accelerated FPR. RESULTS: Age at infection (AF 28.7%), sex (AF 8.2%), route of infection (AF 16.5%) and HCV genotype (AF 7.9%) contributed to accelerated FPR in the Swiss Hepatitis C Cohort Study, whereas significant alcohol drinking, anti-HIV, diabetes and BMI did not. In genotyped patients, variants at rs9380516 (TULP1), rs738409 (PNPLA3), rs4374383 (MERTK) (AF 19.2%) and rs910049 (major histocompatibility complex region) significantly added to the risk of accelerated FPR. Results were replicated in three additional independent cohorts, and a meta-analysis confirmed the role of age at infection, sex, route of infection, HCV genotype, rs738409, rs4374383 and rs910049 in accelerating FPR. CONCLUSIONS: Most factors accelerating liver fibrosis progression in chronic hepatitis C are unmodifiable.


Asunto(s)
Hepacivirus/genética , Hepatitis C Crónica/complicaciones , Cirrosis Hepática/etiología , Polimorfismo de Nucleótido Simple , ARN Viral/análisis , Medición de Riesgo/métodos , Biopsia , Progresión de la Enfermedad , Femenino , Estudio de Asociación del Genoma Completo , Hepatitis C Crónica/virología , Humanos , Incidencia , Cirrosis Hepática/diagnóstico , Cirrosis Hepática/epidemiología , Masculino , Estudios Retrospectivos , Factores de Riesgo , Suiza/epidemiología , Factores de Tiempo
6.
J Viral Hepat ; 22(12): 1068-78, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26075501

RESUMEN

A serologic response to hepatitis B virus (HBV) defined as 'anti-HBc alone' is commonly observed, but its significance remains unclear. This study aimed to define the relationship between 'anti-HBc alone' serostatus and HBV infection, including HBV-specific T- and B-cell memory responses. We enrolled 31 'anti-HBc alone' patients. Total HBV DNA and cccDNA were tested by nested polymerase chain reaction (PCR) analysis in liver samples from 22 'anti-HBc alone' patients vs controls (chronic or resolved HBV infection), followed by HBsAg/HBcAg immunohistochemical (IHC) staining. IFN-γ secretion by HBV-specific T cells was compared in individuals who were 'anti-HBc alone' (n = 27), resolved HBV (n = 21), chronic HBV (n = 24) and 12 healthy controls using enzyme-linked immunospot (ELISpot) assays. An HBsAg-IgG B-cell ELISpot assay was performed in 'anti-HBc alone' patients before and after one dose of recombinant HBsAg vaccine. The majority (23/31, 74.2%) of the 'anti-HBc alone' individuals were co-infected with HCV. Infrequent intrahepatic total HBV DNA (2/22, 9.1%) and cccDNA (1/22, 4.5%) were detected in biopsies; HBsAg and HBcAg IHC staining was negative. HBV-specific T-cell responses were similar between 'anti-HBc alone' individuals and HBV resolvers. Circulating HBV-memory B-cell responses were detected in all 'anti-HBc alone' individuals, consistent with an HBsAg-specific memory pool. After one HBV vaccine dose, increased anti-HBs antibody levels were observed, accompanied by an expansion of HBsAg-specific memory B cells (P = 0.0226). 'Anti-HBc alone' individuals showed HBV-specific T-cell and memory B-cell responses typical of previous viral exposure and protective memory, suggesting a resolved infection.


Asunto(s)
Linfocitos B/inmunología , Antígenos del Núcleo de la Hepatitis B/inmunología , Antígenos de Superficie de la Hepatitis B/inmunología , Virus de la Hepatitis B/inmunología , Linfocitos T/inmunología , Adulto , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , Femenino , Anticuerpos contra la Hepatitis B/sangre , Anticuerpos contra la Hepatitis B/inmunología , Antígenos del Núcleo de la Hepatitis B/análisis , Antígenos de Superficie de la Hepatitis B/análisis , Vacunas contra Hepatitis B/inmunología , Hepatitis B Crónica/inmunología , Hepatitis B Crónica/virología , Humanos , Inmunohistoquímica , Interferón gamma/metabolismo , Masculino , Persona de Mediana Edad , Vacunación , Carga Viral
7.
Analyst ; 140(1): 272-9, 2015 Jan 07.
Artículo en Inglés | MEDLINE | ID: mdl-25368873

RESUMEN

High Resolution Magic Angle Spinning (HR-MAS) NMR allows metabolic characterization of biopsies. HR-MAS spectra from tissues of most organs show strong lipid contributions that are overlapping metabolite regions, which hamper metabolite estimation. Metabolite quantification and analysis would benefit from a separation of lipids and small metabolites. Generally, a relaxation filter is used to reduce lipid contributions. However, the strong relaxation filter required to eliminate most of the lipids also reduces the signals for small metabolites. The aim of our study was therefore to investigate different diffusion editing techniques in order to employ diffusion differences for separating lipid and small metabolite contributions in the spectra from different organs for unbiased metabonomic analysis. Thus, 1D and 2D diffusion measurements were performed, and pure lipid spectra that were obtained at strong diffusion weighting (DW) were subtracted from those obtained at low DW, which include both small metabolites and lipids. This subtraction yielded almost lipid free small metabolite spectra from muscle tissue. Further improved separation was obtained by combining a 1D diffusion sequence with a T2-filter, with the subtraction method eliminating residual lipids from the spectra. Similar results obtained for biopsies of different organs suggest that this method is applicable in various tissue types. The elimination of lipids from HR-MAS spectra and the resulting less biased assessment of small metabolites have potential to remove ambiguities in the interpretation of metabonomic results. This is demonstrated in a reproducibility study on biopsies from human muscle.


Asunto(s)
Encéfalo/patología , Lípidos/aislamiento & purificación , Hígado/patología , Músculo Esquelético/patología , Resonancia Magnética Nuclear Biomolecular , Animales , Encéfalo/metabolismo , Difusión , Humanos , Lípidos/química , Hígado/metabolismo , Músculo Esquelético/metabolismo , Ovinos
8.
J Hepatol ; 61(1): 75-81, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24607626

RESUMEN

BACKGROUND & AIMS: Subtle inter-patient genetic variation and environmental factors combine to determine disease progression in non-alcoholic fatty liver disease (NAFLD). Carriage of the PNPLA3 rs738409 c.444C >G minor allele (encoding the I148M variant) has been robustly associated with advanced NAFLD. Although most hepatocellular carcinoma (HCC) is related to chronic viral hepatitis or alcoholic liver disease, the incidence of NAFLD-related HCC is increasing. We examined whether rs738409 C >G was associated with HCC-risk in patients with NAFLD. METHODS: PNPLA3 rs738409 genotype was determined by allelic discrimination in 100 European Caucasians with NAFLD-related HCC and 275 controls with histologically characterised NAFLD. RESULTS: Genotype frequencies were significantly different between NAFLD-HCC cases (CC=28, CG=43, GG=29) and NAFLD-controls (CC=125, CG=117, GG=33) (p=0.0001). In multivariate analysis adjusted for age, gender, diabetes, BMI, and presence of cirrhosis, carriage of each copy of the rs738409 minor (G) allele conferred an additive risk for HCC (adjusted OR 2.26 [95% CI 1.23-4.14], p=0.0082), with GG homozygotes exhibiting a 5-fold [1.47-17.29], p=0.01 increased risk over CC. When compared to the UK general population (1958 British Birth Cohort, n=1476), the risk-effect was more pronounced (GC vs. CC: unadjusted OR 2.52 [1.55-4.10], p=0.0002; GG vs. CC: OR 12.19 [6.89-21.58], p<0.0001). CONCLUSIONS: Carriage of the PNPLA3 rs738409 C >G polymorphism is not only associated with greater risk of progressive steatohepatitis and fibrosis but also of HCC. If validated, these findings suggest that PNPLA3 genotyping has the potential to contribute to multi-factorial patient-risk stratification, identifying those to whom HCC surveillance may be targeted.


Asunto(s)
Carcinoma Hepatocelular/etiología , Carcinoma Hepatocelular/genética , Lipasa/genética , Neoplasias Hepáticas/etiología , Neoplasias Hepáticas/genética , Proteínas de la Membrana/genética , Enfermedad del Hígado Graso no Alcohólico/complicaciones , Enfermedad del Hígado Graso no Alcohólico/genética , Polimorfismo de Nucleótido Simple , Adulto , Anciano , Estudios de Casos y Controles , Estudios de Cohortes , Progresión de la Enfermedad , Femenino , Frecuencia de los Genes , Estudios de Asociación Genética , Homocigoto , Humanos , Masculino , Persona de Mediana Edad , Enfermedad del Hígado Graso no Alcohólico/patología , Factores de Riesgo , Población Blanca/genética
9.
J Viral Hepat ; 21(8): 568-77, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24118177

RESUMEN

Cirrhotic patients with chronic hepatitis C virus (HCV) infection remain at risk for complications following sustained virological response (SVR). Therefore, we aimed to evaluate treatment efficacy with the number needed to treat (NNT) to prevent clinical endpoints. Mortality and cirrhosis-related morbidity were assessed in an international multicentre cohort of consecutively treated patients with HCV genotype 1 infection and cirrhosis. The NNT to prevent death or clinical disease progression (any cirrhosis-related event or death) in one patient was determined with the adjusted (event-free) survival among patients without SVR and adjusted hazard ratio of SVR. Overall, 248 patients were followed for a median of 8.3 (IQR 6.2-11.1) years. Fifty-nine (24%) patients attained SVR. Among patients without SVR, the adjusted 5-year survival and event-free survival were 94.4% and 80.0%, respectively. SVR was associated with reduced all-cause mortality (HR 0.15, 95% CI 0.05-0.48, P = 0.002) and clinical disease progression (HR 0.16, 95% CI 0.07-0.36, P < 0.001). The NNT to prevent one death in 5 years declined from 1052 (95% CI 937-1755) at 2% SVR (interferon monotherapy) to 61 (95% CI 54-101) at 35% SVR (peginterferon and ribavirin). At 50% SVR, which might be expected with triple therapy, the estimated NNT was 43 (95% CI 38-71). The NNT to prevent clinical disease progression in one patient in 5 years was 302 (95% CI 271-407), 18 (95% CI 16-24) and 13 (95% CI 11-17) at 2%, 35% and 50% SVR, respectively. In conclusion, the NNT to prevent clinical endpoints among cirrhotic patients with HCV genotype 1 has declined enormously with the improvement of antiviral therapy.


Asunto(s)
Antivirales/uso terapéutico , Hepacivirus/clasificación , Hepatitis C Crónica/complicaciones , Hepatitis C Crónica/tratamiento farmacológico , Cirrosis Hepática/complicaciones , Cirrosis Hepática/prevención & control , Adulto , Estudios de Cohortes , Genotipo , Hepacivirus/genética , Hepacivirus/aislamiento & purificación , Hepatitis C Crónica/mortalidad , Humanos , Cooperación Internacional , Cirrosis Hepática/epidemiología , Cirrosis Hepática/mortalidad , Masculino , Persona de Mediana Edad , Análisis de Supervivencia
10.
Ann Oncol ; 24 Suppl 2: ii24-9, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23715940

RESUMEN

Current guidelines recommend transarterial chemoembolization (TACE) as the standard treatment of Barcelona-Clinic Liver Cancer (BCLC)-B patients. However, the long-term survival outcomes of patients managed with this technique do not appear fully satisfactory; in addition, intermediate-stage hepatocellular carcinoma (HCC) includes a heterogeneous population of patients with varying tumour burdens, liver function and disease aetiology. Therefore, not all patients with intermediate-stage HCC may derive similar benefit from TACE, and some patients may benefit from other treatment options, which are currently approved or being explored. These include different TACE modalities, such as selective TACE or drug-eluting beads TACE and radioembolization. The introduction of sorafenib in the therapeutic armamentarium for HCC has provided a new therapeutic option for the treatment of BCLC-B patients who are unsuitable to TACE or in whom TACE resulted in unacceptable toxicity. In addition, clinical trials aimed at investigating the potential role of this molecule in the treatment of patients with intermediate-stage HCC within combination therapeutic regimens are ongoing. This narrative review will present and discuss the most recent evidence on the locoregional or medical treatment with sorafenib in patients with intermediate-stage HCC.


Asunto(s)
Antineoplásicos/uso terapéutico , Carcinoma Hepatocelular/terapia , Quimioembolización Terapéutica , Neoplasias Hepáticas/terapia , Terapia Molecular Dirigida , Niacinamida/análogos & derivados , Compuestos de Fenilurea/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Carcinoma Hepatocelular/enzimología , Carcinoma Hepatocelular/mortalidad , Carcinoma Hepatocelular/patología , Quimioembolización Terapéutica/efectos adversos , Quimioembolización Terapéutica/mortalidad , Humanos , Neoplasias Hepáticas/enzimología , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/patología , Estadificación de Neoplasias , Niacinamida/efectos adversos , Niacinamida/uso terapéutico , Selección de Paciente , Compuestos de Fenilurea/efectos adversos , Factores de Riesgo , Sorafenib , Factores de Tiempo , Resultado del Tratamiento
11.
Minerva Gastroenterol Dietol ; 58(1): 81-6, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22419006

RESUMEN

Hepatocellular carcinoma is an insidious disease that grows without eliciting pain. In the absence of surveillance, the diagnosis of hepatocellular carcinoma is usually made at a late stage, which excludes curative treatments and leaves patients with few therapeutic options. For years, conventional chemotherapy was administered but yielded poor results. This is not surprising since hepatocytes are well equipped to survive exposure to chemotherapeutics. Hepatocytes posses an extensive repertoire of enzymes and pumps capable of degrading and exporting these drugs. Bypassing hepatocytic tumor cells in favour of supportive cells represents an alternative treatment target that has achieved modest success. The supportive cells in the hepatic vasculature comprise endothelial cells and pericytes. Thanks to a concerted effort from fundamental and pharmacological researchers, several drugs targeted to the vasculature are reaching the clinic. This manuscript reviews the rationale for targeting the vascular cells to treat hepatocellular carcinoma, the signalling pathways underlying angiogenesis and the most promising drugs.


Asunto(s)
Inhibidores de la Angiogénesis/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Carcinoma Hepatocelular/tratamiento farmacológico , Neoplasias Hepáticas/tratamiento farmacológico , Neovascularización Patológica/tratamiento farmacológico , Bevacizumab , Carcinoma Hepatocelular/mortalidad , Carcinoma Hepatocelular/patología , Ensayos Clínicos como Asunto , Células Endoteliales/efectos de los fármacos , Humanos , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/patología , Pericitos/efectos de los fármacos , Tasa de Supervivencia , Suiza/epidemiología , Resultado del Tratamiento
12.
Int J Infect Dis ; 116: 391-396, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34952210

RESUMEN

BACKGROUND AND AIMS: Chronic hepatitis B virus (HBV) infection is the main cause of hepatocellular carcinoma (HCC) in sub-Saharan Africa (SSA). An HCC screening initiative was piloted in an established cohort of individuals co-infected with human immunodeficiency virus (HIV) and HBV on antiretroviral therapy (ART) at two outpatient clinics in Lusaka, Zambia. METHODS: All patients underwent abdominal ultrasound (AUS) and transient elastography. RESULTS: Among 279 patients co-infected with HIV/HBV, 165 (59.1%) were men, median age was 34 years [interquartile range (IQR) 28-39 years] and median CD4 count was 246 cells/µL (IQR 112-355 cells/µL) at ART initiation. While 102 (55.7%) individuals had elevated transaminases, 114 (59.7%) had HBV levels >2000 IU/mL and 59 (24.6%) had significant fibrosis. At their first AUS measurement, 75 (26.9%) participants had hepatomegaly and 69 (24.7%) had periportal fibrosis. Five patients had a liver lesion >1 cm, an indication for confirmatory imaging. CONCLUSIONS: In one of the first HCC screening initiatives in SSA, 2% of patients co-infected with HIV/HBV had significant liver lesions, and one-quarter had findings suggestive of schistosomiasis-induced liver damage.


Asunto(s)
Carcinoma Hepatocelular , Coinfección , Infecciones por VIH , Hepatitis B Crónica , Hepatitis B , Neoplasias Hepáticas , Adulto , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/etiología , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Hepatitis B/complicaciones , Hepatitis B/epidemiología , Virus de la Hepatitis B , Hepatitis B Crónica/complicaciones , Humanos , Neoplasias Hepáticas/diagnóstico por imagen , Neoplasias Hepáticas/epidemiología , Masculino , Proyectos Piloto , Zambia/epidemiología
13.
J Viral Hepat ; 17(12): 845-50, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20070503

RESUMEN

Hepatocellular apoptosis plays a major role in the pathogenesis of chronic hepatitis C. It can be measured noninvasively by determining the circulating levels of cytokeratin-18 fragments. We hypothesized that the effect of antiviral therapy on this parameter will be different in patients with a sustained virological response, relapse (REL) and nonresponse (NR). We quantified cytokeratin-18 fragments in plasma of patients participating in the Swiss Hepatitis C cohort, who received antiviral therapy without stopping because of sides effects. A total of 315 patients were included, 183 with a sustained response, 64 with NR and 68 who relapsed. Mean levels ±SD of circulating cytokeratin-18 fragments before therapy were 174 ± 172 U/L for responsders, 188 ± 145 for nonresponders and 269 ± 158 U/L for patients who relapsed. The values were significantly higher in the REL group (ANOVA P < 0.006). A sustained response was associated with a significant improvement of the plasma levels (94 ± 92 U/L, paired test P < 0.000001), whereas there was no improvement in the nonresponder group (183 ± 158 U/L) and in the relapser group (158 ± 148 U/L). There was a weak correlation between alanine aminotransferase (ALT) and cytokeratin-18 fragment levels (r² = 0.35, P < 0.000001) before therapy but not after therapy and none with hepatitis C virus (HCV) viremia. Successful antiviral therapy results in a significant decrease in circulating levels of cytokeratin-18 fragments arguing for a reduction in hepatocellular apoptosis after clearance of the HCV. Baseline cytokeratin-18 fragment levels are higher in relapsers. Correlations with ALT are weak, suggesting that these two tests measure different but related processes.


Asunto(s)
Antivirales/uso terapéutico , Hepacivirus/efectos de los fármacos , Hepatitis C Crónica/tratamiento farmacológico , Queratina-18/sangre , Carga Viral/efectos de los fármacos , Alanina Transaminasa/sangre , Apoptosis , Estudios de Cohortes , Hepacivirus/genética , Hepacivirus/fisiología , Hepatitis C Crónica/virología , Hepatocitos/fisiología , Humanos , ARN Viral/sangre , Recurrencia , Suiza , Resultado del Tratamiento , Viremia/tratamiento farmacológico , Viremia/virología
14.
Transpl Infect Dis ; 11(1): 33-9, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19144096

RESUMEN

Hepatitis C virus (HCV) infection invariably recurs after liver transplantation (LT), leading to significant morbidity and mortality. Although the combination of pegylated interferon-alpha (IFN-alpha)/ribavirin is the preferred treatment for these patients, the optimal schedule remains undetermined. In an uncontrolled trial, 19 patients with HCV infection recurring after LT received pegylated IFN-alpha(2a), 180 mug weekly, and ribavirin, 10 mg/kg body weight daily, for 48 weeks. The proportion of patients with undetectable HCV RNA in their serum after 12 weeks of treatment was 53%. Five patients (26%) dropped out of the study due to intolerance (in 2 cases), depression (in 1), or infectious complications (in 2). A sustained virological response (SVR), defined as undetectable serum HCV RNA 24 weeks after the end of treatment, was observed in 9/19 patients (47%). SVR was associated with an early virological response after 12 weeks of therapy (P<0.001) and a treatment duration >80% (P=0.02), but not with baseline HCV RNA level or a cumulative dose of pegylated IFN-alpha(2a) or ribavirin >80% of the scheduled dose. All 4 patients with genotype 2 or 3 reached SVR, as compared with 33% of patients with genotype 1 or 4 (P=0.03). A 48-week course of pegylated IFN-alpha(2a)/ribavirin therapy is effective in patients with recurrent HCV infection after LT.


Asunto(s)
Antivirales/administración & dosificación , Hepatitis C/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Trasplante de Hígado/efectos adversos , Polietilenglicoles/uso terapéutico , Ribavirina/uso terapéutico , Adulto , Anciano , Antivirales/uso terapéutico , Femenino , Rechazo de Injerto , Supervivencia de Injerto , Hepacivirus/efectos de los fármacos , Hepatitis C/mortalidad , Humanos , Interferón alfa-2 , Interferón-alfa/administración & dosificación , Masculino , Persona de Mediana Edad , Polietilenglicoles/administración & dosificación , Proteínas Recombinantes , Recurrencia , Ribavirina/administración & dosificación , Tasa de Supervivencia , Resultado del Tratamiento
15.
Med Mal Infect ; 39(6): 401-5, 2009 Jun.
Artículo en Francés | MEDLINE | ID: mdl-19304424

RESUMEN

We report the case of an atypical localization of a spinal cord "toxoplasmic abscess". The 46-year-old patient, HIV-1 positive, was admitted for acute urine retention and gait disorders. MRI revealed a T12-L1 medullary lesion suggesting a tumoral, inflammatory and infectious pathology. The radiological aspect and immunosuppression lead to the initiation of a treatment against Toxoplasma gondii, following the same treatment principles as for cerebral toxoplasmosis. The diagnosis can only be proved by data from autopsy or surgical biopsy, but toxoplasmosis PCR on CSF seems to be an interesting alternative to confirm the diagnosis. According to the literature, PCR is not sensitive enough as a diagnostic tool. Improvement after treatment supported the diagnosis confirmed by PCR.


Asunto(s)
Infecciones por VIH/complicaciones , Toxoplasma/aislamiento & purificación , Animales , Antiprotozoarios/uso terapéutico , Líquido Cefalorraquídeo/parasitología , Diagnóstico Diferencial , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa/métodos , Radiografía , Sensibilidad y Especificidad , Enfermedades de la Médula Espinal/parasitología , Enfermedades de la Médula Espinal/patología , Toxoplasma/genética , Toxoplasmosis/diagnóstico , Toxoplasmosis/diagnóstico por imagen , Toxoplasmosis/tratamiento farmacológico , Toxoplasmosis/patología
16.
Gut ; 57(11): 1597-603, 2008 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18625696

RESUMEN

BACKGROUND: Hepatitis C virus (HCV) infection is associated with decreased health-related quality of life (HRQOL). Although HCV has been suggested to directly impair neuropsychiatric functions, other factors may also play a role. PATIENTS AND METHODS: In this cross-sectional study, we assessed the impact of various host-, disease- and virus-related factors on HRQOL in a large, unselected population of anti-HCV-positive subjects. All individuals (n = 1736) enrolled in the Swiss Hepatitis C Cohort Study (SCCS) were asked to complete the Short Form 36 (SF-36) and the Hospital Anxiety Depression Scale (HADS). RESULTS: 833 patients (48%) returned the questionnaires. Survey participants had significantly worse scores in both assessment instruments when compared to a general population. By multivariable analysis, reduced HRQOL (mental and physical summary scores of SF-36) was independently associated with income. In addition, a low physical summary score was associated with age and diabetes, whereas a low mental summary score was associated with intravenous drug use. HADS anxiety and depression scores were independently associated with income and intravenous drug use. In addition, HADS depression score was associated with diabetes. None of the SF-36 or HADS scores correlated with either the presence or the level of serum HCV RNA. In particular, SF-36 and HADS scores were comparable in 555 HCV RNA-positive and 262 HCV RNA-negative individuals. CONCLUSIONS: Anti-HCV-positive subjects have decreased HRQOL compared to controls. The magnitude of this decrease was clinically important for the SF-36 vitality score. Host and environmental, rather than viral factors, seem to impact on HRQOL level.


Asunto(s)
Estado de Salud , Hepatitis C Crónica/psicología , Calidad de Vida/psicología , Adulto , Estudios Transversales , Trastorno Depresivo/etiología , Femenino , Encuestas Epidemiológicas , Hepatitis C Crónica/tratamiento farmacológico , Humanos , Masculino , Índice de Severidad de la Enfermedad , Perfil de Impacto de Enfermedad , Factores Socioeconómicos , Encuestas y Cuestionarios
17.
Rev Med Interne ; 28(8): 568-70, 2007 Aug.
Artículo en Francés | MEDLINE | ID: mdl-17445952

RESUMEN

INTRODUCTION: Granulomatous myositis is a rare condition that has been described in association with sarcoidosis. In the absence of sarcoidosis or other underlying disease, a diagnosis of isolated granulomatous myositis is considered. OBSERVATION: A 61-year-old African man presented with progressive limitation in running and proximal atrophy of the lower limbs for the past year. Quadricipital muscle biopsy revealed non-caseating epithelioid granulomas and multinuclear giant cells. Whole body fluorodeoxyglucose positron emission tomography ((18)FDG-PET) revealed hypermetabolic activity of salivary and lachrymal glands, and mild hypermetabolism in the mediastinal lymph nodes. Minor salivary gland biopsy was consistent with sarcoidosis. CONCLUSION: To our knowledge, this is the first reported case of sarcoid myopathy demonstrating the diagnostic usefulness of (18)FDG-PET.


Asunto(s)
Granuloma/complicaciones , Miositis/complicaciones , Sarcoidosis/diagnóstico , Fluorodesoxiglucosa F18 , Humanos , Masculino , Persona de Mediana Edad , Tomografía de Emisión de Positrones , Radiofármacos , Sarcoidosis/complicaciones , Imagen de Cuerpo Entero
18.
Ther Umsch ; 63(5): 295-9, 2006 May.
Artículo en Alemán | MEDLINE | ID: mdl-16739887

RESUMEN

Oesophageal and fundic varices belong to the most frequent complications of cirrhosis and portal hypertension. Due to their significant morbidity and mortality, bleedings from oesophageal or fundic varices represent a challenge for the emergency medical team as well as for the gastroenterologist. The patient with a variceal bleeding should be accurately monitored and his/her hemodynamic parameters should be maintained stable with the administration of plasma expanders and blood units when indicated. An antibiotic prophylaxis in this setting--norfloxacin or ceftriaxon--has been demonstrated to significantly reduce morbidity and mortality. Additionally, the early administration of vasoactive compounds, such as terlipressin, somatostatin or octreotide, is associated with beneficial effects in reducing the bleeding. An upper gastrointestinal endoscopy should be generally performed within the first twelve hours from the beginning of the bleeding in order to obtain an accurate diagnosis and to provide an adequate treatment. Endoscopic procedures to control the bleeding include the rubber band ligation, the treatment of the varix with a sclerosing agent or the injection of tissue glue into the varix. In case of recurrent bleeding, beyond the above methods, different techniques, such as the transjugular porto-caval shunt, surgical shunt procedures, as well as embolisation of splanchnic blood vessels, represent additional therapeutic options. However, they are associated with very high mortality rates and their indication has to be discussed case by case by an interdisciplinary team of experts. Future therapies include the optimisation and the improvement of the current medical and endoscopic armamentarium, as well as the application of treatments to novel targets, such as the coagulation cascade.


Asunto(s)
Cuidados Críticos/métodos , Várices Esofágicas y Gástricas/diagnóstico , Várices Esofágicas y Gástricas/terapia , Hemorragia Gastrointestinal/diagnóstico , Hemorragia Gastrointestinal/terapia , Várices Esofágicas y Gástricas/complicaciones , Alemania , Humanos , Guías de Práctica Clínica como Asunto , Pautas de la Práctica en Medicina
19.
Rev Med Interne ; 37(7): 493-6, 2016 Jul.
Artículo en Francés | MEDLINE | ID: mdl-26971198

RESUMEN

INTRODUCTION: Rodents are hantavirus hosts. In Europe, hantaviruses are responsible for human infections resulting in hemorrhagic fever with renal syndrome. Thousands of Puumala virus infections are reported annually in Europe, whereas human Seoul virus infections are rarely detected. CASE REPORT: We report the case of a 38-year-old patient who presented initially with flu-like symptoms and transitory blurred vision. He developed thrombocytopenia, acute renal failure, and elevated aminotransferases levels during the disease course, but the outcome was favorable with a full recovery. Afterwards, the hantavirus serology results were indicative of Seoul virus infection. CONCLUSION: This report serves to remind physicians to consider diagnosing hantavirus infection when observing the association of fever, acute renal failure and thrombocytopenia. Transitory blurred vision is a specific element to indicate this diagnosis.


Asunto(s)
Fiebre Hemorrágica con Síndrome Renal/virología , Orthohantavirus/aislamiento & purificación , Lesión Renal Aguda/virología , Adulto , Técnica del Anticuerpo Fluorescente , Francia , Fiebre Hemorrágica con Síndrome Renal/diagnóstico , Humanos , Masculino , Seúl , Trombocitopenia/virología , Transaminasas/sangre
20.
Aliment Pharmacol Ther ; 44(8): 877-89, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27549244

RESUMEN

BACKGROUND: Blood tests of liver injury are less well validated in non-alcoholic fatty liver disease (NAFLD) than in patients with chronic viral hepatitis. AIMS: To improve the validation of three blood tests used in NAFLD patients, FibroTest for fibrosis staging, SteatoTest for steatosis grading and ActiTest for inflammation activity grading. METHODS: We pre-included new NAFLD patients with biopsy and blood tests from a single-centre cohort (FibroFrance) and from the multicentre FLIP consortium. Contemporaneous biopsies were blindly assessed using the new steatosis, activity and fibrosis (SAF) score, which provides a reliable and reproducible diagnosis and grading/staging of the three elementary features of NAFLD (steatosis, inflammatory activity) and fibrosis with reduced interobserver variability. We used nonbinary-ROC (NonBinAUROC) as the main endpoint to prevent spectrum effect and multiple testing. RESULTS: A total of 600 patients with reliable tests and biopsies were included. The mean NonBinAUROCs (95% CI) of tests were all significant (P < 0.0001): 0.878 (0.864-0.892) for FibroTest and fibrosis stages, 0.846 (0.830-0.862) for ActiTest and activity grades, and 0.822 (0.804-0.840) for SteatoTest and steatosis grades. FibroTest had a higher NonBinAUROC than BARD (0.836; 0.820-0.852; P = 0.0001), FIB4 (0.845; 0.829-0.861; P = 0.007) but not significantly different than the NAFLD score (0.866; 0.850-0.882; P = 0.26). FibroTest had a significant difference in median values between adjacent stage F2 and stage F1 contrarily to BARD, FIB4 and NAFLD scores (Bonferroni test P < 0.05). CONCLUSIONS: In patients with NAFLD, SteatoTest, ActiTest and FibroTest are non-invasive tests that offer an alternative to biopsy, and they correlate with the simple grading/staging of the SAF scoring system across the three elementary features of NAFLD: steatosis, inflammatory activity and fibrosis.


Asunto(s)
Hígado Graso/diagnóstico , Cirrosis Hepática/diagnóstico , Enfermedad del Hígado Graso no Alcohólico/diagnóstico , Biopsia , Femenino , Pruebas Hematológicas/métodos , Humanos , Inflamación/diagnóstico , Masculino , Persona de Mediana Edad , Estudios Prospectivos
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