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1.
Ann Intern Med ; 171(7): 453-457, 2019 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-31476765

RESUMEN

Background: Microplastics are ubiquitous in natural environments. Ingestion of microplastics has been described in marine organisms, whereby particles may enter the food chain. Objective: To examine human feces for the presence of microplastics to determine whether humans involuntarily ingest them. Design: Prospective case series in which participants completed a food diary and sampled stool according to step-by-step instructions. Setting: Europe and Asia. Participants: Eight healthy volunteers aged 33 to 65 years. Measurements: After chemical digestion, Fourier-transform infrared microspectroscopy was used to analyze the presence and shape of 10 common types of microplastic in stool samples. Results: All 8 stool samples tested positive for microplastics. A median of 20 microplastics (50 to 500 µm in size) per 10 g of human stool were identified. Overall, 9 plastic types were detected, with polypropylene and polyethylene terephthalate being the most abundant. Limitations: There were few participants, and each provided only 1 sample. The origin and fate of microplastics in the gastrointestinal tract were not investigated. Conclusion: Various microplastics were detected in human stool, suggesting inadvertent ingestion from different sources. Further research on the extent of microplastic intake and the potential effect on human health is needed. Primary Funding Source: None.


Asunto(s)
Heces/química , Microplásticos/análisis , Adulto , Anciano , Asia , Europa (Continente) , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Espectroscopía Infrarroja por Transformada de Fourier
2.
Liver Int ; 38(6): 1036-1044, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29091351

RESUMEN

BACKGROUND & AIMS: Reduction in portal pressure by self-expandable polytetrafluoroethylene (ePTFE)-covered transjugular intrahepatic portosystemic shunts (TIPS) is a treatment option for refractory ascites. Data on clinical outcomes after ePTFE-TIPS vs repetitive large-volume paracentesis (LVP) plus albumin (A) administration for the treatment of patients with refractory ascites are limited. METHODS: Retrospective comparison of ePTFE-TIPS vs LVP+A in terms of (i) control of ascites, (ii) occurrence of overt hepatic encephalopathy (HE) and (iii) transplant-free survival in cirrhotic patients with refractory ascites. RESULTS: Among n = 221 patients with cirrhosis and refractory ascites, n = 140 received ePTFE-TIPS and were compared to n = 71 patients undergoing repetitive LVP+A. After ePTFE-TIPS, ascites was controlled without any further need for paracentesis in n = 76 (54%; n = 7 without and n = 69 with diuretics). The need for frequent large-volume paracentesis was significantly higher in the LVP+A group than with ePTFE-TIPS (median 0.67 (IQR: 0.23-2.63) months vs 49.5 (IQR: 5.07-102.60) months until paracentesis, log-rank P < .001). De-novo incidence of HE was similar in ePTFE-TIPS and LVP+A patients (log-rank P = .361). Implantation of ePTFE-TIPS was associated with improved 1-year survival as compared to LVP+A (65.6% vs 48.4%, log-rank P = .033). Age (odds ratio (OR):1.05; 95% confidence interval (95% CI):1.03-1.07; P < .001), serum albumin (OR: 0.95; 95% CI: 0.92-0.99; P = .013) and hepatocellular carcinoma (OR: 1.66; 95% CI: 1.06-2.58; P = .026) emerged as independent predictors of survival. CONCLUSIONS: ePTFE-TIPS results in superior control of ascites without increasing the risk for overt HE as compared to LVP+A. Although ePTFE-TIPS improved 1-year survival in cirrhotic patients with refractory ascites, its use was not independently associated with transplant-free survival.


Asunto(s)
Ascitis/terapia , Cirrosis Hepática/complicaciones , Paracentesis , Derivación Portosistémica Intrahepática Transyugular , Stents , Anciano , Albúminas/uso terapéutico , Ascitis/etiología , Ascitis/mortalidad , Austria/epidemiología , Materiales Biocompatibles Revestidos , Diuréticos/uso terapéutico , Femenino , Encefalopatía Hepática/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Politetrafluoroetileno , Modelos de Riesgos Proporcionales , Recurrencia , Estudios Retrospectivos , Factores de Riesgo , Centros de Atención Terciaria , Resultado del Tratamiento
3.
Infection ; 44(1): 93-101, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26481253

RESUMEN

PURPOSE: With DAAs still only being licensed for chronic HCV infection, the ongoing epidemic of acute hepatitis C (AHC) infection among MSM highlights the need to identify factors allowing for optimal HCV treatment outcome. METHODS: 303 HIV-infected patients from 4 European countries with diagnosed acute HCV infection were treated early with pegylated interferon (pegIFN) and ribavirin (RBV) (n = 273) or pegylated interferon alone (n = 30). RESULTS: All patients were male, median age was 39 years. Main routes of transmission were MSM (95%) and IVDU (3%). 69% of patients were infected with HCV GT 1, 4.3% with GT 2, 10.6% with GT 3, 16.1% with GT 4. Overall SVR rate was 69.3% (210/303). RVR (p ≤ 0.001), 48-w treatment duration (p ≤ 0.001) and GT 2/3 (p = 0.024) were significantly associated with SVR. SVR rates were significantly higher in HCV GT 2/3 receiving pegIFN and RBV (33/35) when compared with pegIFN mono-therapy (6/10) (94% vs. 60 % respectively; p = 0.016). In multivariate analysis, pegIFN/RBV combination therapy (p = 0.017) and rapid virological response (RVR) (p = 0.022) were significantly associated with SVR in HCV GT 2/3. In HCV GT 1/4, RVR (p ≤ 0.001) and 48-w treatment duration (p ≤ 0.001) were significantly associated with SVR. CONCLUSIONS: Treatment of AHC GT 2 and 3 infections with pegIFN/RBV is associated with higher SVR rates suggesting different cure rates depending on HCV genotype similar to the genotype effects seen previously in chronic HCV under pegIFN/RBV. With pegIFN/RBV still being the gold standard of AHC treatment and in light of cost issues around DAAs and very limited licensed interferon-free DAA treatment options for chronic HCV GT 3 infection AHC GT 3 patients might benefit most from early interferon-containing treatment.


Asunto(s)
Antivirales/administración & dosificación , Coinfección/tratamiento farmacológico , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Hepatitis C/complicaciones , Hepatitis C/tratamiento farmacológico , Adulto , Quimioterapia Combinada/métodos , Genotipo , Hepacivirus/clasificación , Hepacivirus/genética , Humanos , Interferón-alfa/uso terapéutico , Masculino , Persona de Mediana Edad , Polietilenglicoles/uso terapéutico , Estudios Prospectivos , Proteínas Recombinantes/uso terapéutico , Ribavirina/uso terapéutico , Resultado del Tratamiento
4.
J Infect Dis ; 211(5): 729-35, 2015 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-25214517

RESUMEN

BACKGROUND: The HIVCOBOC-RGT study (NCT01925183) was the first study to evaluate response-guided shortening of the duration of boceprevir (BOC)-based triple therapy in human immunodeficiency virus (HIV)/hepatitis C virus genotype 1-coinfected patients (HIV/HCV-GT1). METHODS: After 4 weeks of pegylated interferon-α-2a/ribavirin (PEGIFN/RBV) lead-in, patients with target-not-detectable HCV-RNA at week 8 (rapid virologic response; LI4W-W8UTND) received 24 weeks of BOC/PEGIFN/RBV (total: 28 weeks [W28]). Patients with target-detectable HCV-RNA at week 8 received 44 weeks of BOC/PEGIFN/RBV (total: 48 weeks [W48]). RESULTS: Fourteen patients (67%) had LI4W-W8UTND and were eligible for the shortened W28 arm, while 7 (33%) patients were allocated to the W48 arm. No breakthrough or relapse occurred in the W28 arm, resulting in a sustained virologic response (SVR12TND) rate of 100% (12/12). In the W48 arm, the SVR12TND was 50% (3/6), with 3 patients meeting the futility rule at treatment week 12. The preliminary overall SVR12TND rate was 83% (15/18). Serious adverse events were observed in 5 (24%) patients, with 2 (10%) patients requiring surgical treatment of abscesses. CONCLUSIONS: The majority of HIV/HCV-GT1 were eligible for response-guided shortening of treatment duration to W28 and all of these patients had a SVR12TND. If second-generation direct-acting antivirals are not available, W28 of BOC-based triple therapy may be recommended.


Asunto(s)
Antivirales/administración & dosificación , Monitoreo de Drogas , Infecciones por VIH/complicaciones , Hepatitis C Crónica/complicaciones , Hepatitis C Crónica/tratamiento farmacológico , Prolina/análogos & derivados , Adulto , Antivirales/efectos adversos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/patología , Femenino , Humanos , Interferón-alfa/administración & dosificación , Masculino , Persona de Mediana Edad , Polietilenglicoles/administración & dosificación , Prolina/administración & dosificación , Prolina/efectos adversos , ARN Viral/sangre , Proteínas Recombinantes/administración & dosificación , Ribavirina/administración & dosificación , Resultado del Tratamiento
5.
Liver Int ; 34(1): 69-77, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23890125

RESUMEN

UNLABELLED: The aim of this study was to prospectively assess health-related quality of life (HRQL) and severity of fatigue before, during and after antiviral therapy in HIV/HCV co-infected patients. DESIGN: 59 HIV/HCV co-infected patients receiving pegylated interferon plus ribavirin (PEGIFN+RBV) in the HIVCOPEG study were included in this substudy evaluating the secondary endpoints HRQL and severity of fatigue. METHODS: HRQL and severity of fatigue were assessed using SF36 and FSS, respectively. Advanced liver fibrosis was defined as METAVIR F3/F4 or liver stiffness >9.5 kPa. RESULTS: At baseline, advanced liver fibrosis was associated with worse physical health. Mental health was impaired in female patients and in patients with a history of intravenous drug abuse, while a history of depression was associated with higher severity of fatigue. Female gender was associated with a more pronounced relative decrease in mental health during therapy. At follow-up, 24 weeks after the end of therapy, both physical health and fatigue symptoms had improved. Virological response was associated with better physical and mental health, as well as with reduced severity of fatigue. A correlation between anemia grade and the relative impairments in physical health, mental health and fatigue was observed. CONCLUSIONS: Antiviral therapy with PEGIFN+RBV impairs physical and mental health and increases severity of fatigue, while virological response is associated with improvements in physical health and fatigue symptoms. The optimization of anemia management is essential for reducing the burden of impaired HRQL and fatigue in HIV/HCV co-infected patients receiving antiviral therapy with PEGIFN+RBV.


Asunto(s)
Antivirales/uso terapéutico , Coinfección , Fatiga/virología , Infecciones por VIH/complicaciones , Hepatitis C/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Polietilenglicoles/uso terapéutico , Calidad de Vida , Ribavirina/uso terapéutico , Anemia/psicología , Anemia/virología , Quimioterapia Combinada , Fatiga/diagnóstico , Fatiga/psicología , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/psicología , Hepatitis C/complicaciones , Hepatitis C/diagnóstico , Hepatitis C/psicología , Humanos , Cirrosis Hepática/psicología , Cirrosis Hepática/virología , Masculino , Salud Mental , Estudios Prospectivos , Proteínas Recombinantes/uso terapéutico , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Factores de Tiempo , Resultado del Tratamiento
6.
Eur J Clin Invest ; 42(6): 599-606, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22117591

RESUMEN

BACKGROUND: A polymorphism near the IL28B gene has been shown to be associated with virologic response to antiviral treatment in HCV-infected patients. The predictive value of interferon-gamma inducible protein 10 (IP10) on treatment outcome has been described in HCV patients. Data on combining these predictors in HIV-HCV-coinfected patients are not available. METHODS: Virologic parameters, IL28B single nucleotide polymorphisms (SNP) and pretreatment serum IP10 were determined in HIV-HCV-coinfected patients having completed antiviral therapy with pegylated interferon/ribavirin. RESULTS: A total of 72 HIV-HCV-coinfected patients were included in the study; 68% had HCV genotype (GT)-1/4 and 32% had HCV GT-2/3 infections. Rapid virologic response (63% vs. 28%; P = 0·023) and sustained virologic response (SVR: 81% vs. 51%; P = 0·008) rates were significantly higher in C/C vs. non-C/C patients. Patients with low pretreatment IP10 levels (< 400 pg/mL) achieved significantly higher SVR rates than patients with high (> 400 pg/mL) IP10 levels (78% vs. 13%; P < 0·0001). C/C SNP and low IP10 levels were associated with higher SVR rates in both patients with GT-1/4 and GT-2/3. The C/C patients with low IP10 achieved SVR rates of 97% compared with SVR rates of 9% in non-C/C patients with high IP10. CONCLUSION: The IL28B SNP influences rapid viral response, relapse rates and SVR. The combination of IL28B and IP10 represents a predictive model of SVR in HIV-HCV coinfection.


Asunto(s)
Quimiocina CXCL10/sangre , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Hepatitis C Crónica/diagnóstico , Hepatitis C Crónica/tratamiento farmacológico , Interleucinas/genética , Adulto , Antivirales/uso terapéutico , Coinfección , Femenino , Genotipo , Infecciones por VIH/complicaciones , Hepatitis C Crónica/complicaciones , Humanos , Interferón-alfa/uso terapéutico , Interferones , Masculino , Persona de Mediana Edad , Modelos Biológicos , Polietilenglicoles/uso terapéutico , Polimorfismo de Nucleótido Simple , Valor Predictivo de las Pruebas , Ribavirina/uso terapéutico , Resultado del Tratamiento , Carga Viral , Adulto Joven
7.
Clin Gastroenterol Hepatol ; 9(7): 602-8.e1, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21397726

RESUMEN

BACKGROUND & AIMS: There are limited data on the efficacy and safety of antiviral therapy in patients with hepatitis C virus (HCV)-related cirrhosis, particularly on the impact of portal hypertension. METHODS: We assessed hepatovenous pressure gradient (HVPG), liver stiffness (transient elastography), and interleukin (IL)-28B polymorphisms (rs12979860) in 90 cirrhotic patients with HCV infection (82% genotype 1 or 4) before antiviral therapy with pegylated interferon and ribavirin. Efficacy and safety were evaluated. RESULTS: Rates of sustained virologic response were significantly lower among patients with clinically significant portal hypertension (CSPH; HVPG ≥ 10 mm Hg; n = 50) than among patients without CSPH (HVPG <10 mm Hg; n = 40): 14% vs 51% (P = .0007). Seventy-nine percent and 83% of patients with CSPH and without CSPH, respectively, received more than 80% of planned dose (P = .647). The predictive value of HVPG (area under the curve [AUC], 0.743) was greater than that of liver stiffness (AUC, 0.647) or of baseline HCV RNA levels (AUC, 0.620). The IL-28B polymorphism was not associated significantly with a sustained virologic response. Multivariate analysis revealed that HVPG (odds ratio [OR], 14.3; P = .009), baseline HCV RNA levels (OR, 5.3; P = .019), and HCV genotype (OR, 6.5; P = .046) were independent risk factors for treatment failure. A trend toward higher incidence of anemia and neutropenia was observed for patients with CSPH. The incidence and grade of thrombocytopenia were significantly higher among patients with than without CSPH (94% vs 75%; P = .006). CONCLUSIONS: HVPG is an independent predictor of response to antiviral therapy, with better predictive value than liver stiffness, baseline HCV RNA levels, HCV genotype, or IL-28B polymorphism. The incidence and grade of thrombocytopenia during antiviral therapy are higher among patients with CSPH. In evaluating cirrhotic HCV patients for antiviral treatment, measurement of HVPG should be considered.


Asunto(s)
Antivirales/administración & dosificación , Antivirales/efectos adversos , Hepatitis C Crónica/complicaciones , Hepatitis C Crónica/tratamiento farmacológico , Cirrosis Hepática/diagnóstico , Cirrosis Hepática/patología , Presión Portal/fisiología , Adulto , Diagnóstico por Imagen de Elasticidad/métodos , Femenino , Humanos , Incidencia , Interferón alfa-2 , Interferón-alfa/administración & dosificación , Interferón-alfa/efectos adversos , Interferones , Interleucinas/genética , Hígado/patología , Masculino , Persona de Mediana Edad , Polietilenglicoles/administración & dosificación , Polietilenglicoles/efectos adversos , Polimorfismo Genético , Valor Predictivo de las Pruebas , Pronóstico , Proteínas Recombinantes , Ribavirina/administración & dosificación , Ribavirina/efectos adversos , Trombocitopenia/inducido químicamente , Resultado del Tratamiento
8.
J Infect Dis ; 202(1): 156-60, 2010 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-20486858

RESUMEN

The combination of highly active antiretroviral therapy (HAART) plus ribavirin (RBV) in patients with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) coinfection has been reported to cause mitochondrial toxicity (MT). Sixty-four patients with HIV-HCV coinfection who were receiving antiviral therapy were evaluated for MT. Patients with concomitant HAART showed greater increases in lactate levels than did patients without HAART, and this difference was more pronounced in patients who received higher dosages of RBV. The incidence of pancreatic enzyme elevations and symptomatic pancreatitis was higher among patients who received HAART and high-dose RBV. Hepatic steatosis increased in patients who received HAART and high-dose RBV. Patients who showed signs of MT achieved higher rates of sustained virologic response than did patients without MT (73% vs 44%).


Asunto(s)
Terapia Antirretroviral Altamente Activa/efectos adversos , Infecciones por VIH/tratamiento farmacológico , Hepatitis C/tratamiento farmacológico , Enfermedades Mitocondriales/inducido químicamente , Ribavirina/efectos adversos , Ribavirina/uso terapéutico , Fármacos Anti-VIH/administración & dosificación , Fármacos Anti-VIH/efectos adversos , Fármacos Anti-VIH/uso terapéutico , Antivirales/administración & dosificación , Antivirales/efectos adversos , Antivirales/uso terapéutico , Esquema de Medicación , Quimioterapia Combinada , Regulación de la Expresión Génica , Infecciones por VIH/complicaciones , Hepacivirus/genética , Hepatitis C/complicaciones , Humanos , Interferón alfa-2 , Interferón-alfa/administración & dosificación , Interferón-alfa/uso terapéutico , L-Lactato Deshidrogenasa/metabolismo , Ácido Láctico/sangre , Enfermedades Mitocondriales/sangre , Polietilenglicoles/administración & dosificación , Polietilenglicoles/uso terapéutico , Proteínas Recombinantes , Ribavirina/administración & dosificación
9.
Antivir Ther ; 13(8): 969-76, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-19195322

RESUMEN

BACKGROUND: Interferon (IFN)-gamma inducible protein 10 (IP-10) is increased in hepatitis C virus (HCV) monoinfection, correlates with hepatic inflammation and predicts non-response (NR) to antiviral therapy. We aimed to clarify the role of IP-10 in HIV-HCV coinfection. METHODS: Serum IP-10 levels of 30 HIV-HCV-coinfected patients treated with pegylated (PEG)-IFN-alpha2a (180 microg/week) and ribavirin (800-1,200 mg/day) were measured at baseline and 24 h after first IFN dose. The predictive value of IP-10 was compared with established markers of treatment outcome by applying a multivariate logistic regression model. RESULTS: Patients with NR (476 +/- 156 pg/ml) or virological relapse (508 +/- 298 pg/ml) had significantly higher baseline IP-10 levels compared with patients who had a sustained virological response (SVR; 293 +/- 97 pg/ml, P = 0.001). The IFN-induced increase of IP-10 was significantly stronger in patients with an SVR (P = 0.017). IP-10 levels were associated with HCV viral load, alanine aminotransferase (ALT) levels, hepatic inflammatory activity and fibrosis stage. Advanced fibrosis, high HCV viral load, hepatovenous pressure gradient and pretreatment IP-10 > 400 pg/ml predicted NR to antiviral therapy. In the multivariate analysis, IP-10 was identified as the strongest baseline predictor of SVR with a specificity and sensitivity of 83.4% and 92.9%, respectively. CONCLUSIONS: Pretreatment IP-10 levels correlated with HCV viral load, ALT levels, hepatic inflammation and fibrosis. An IP-10 cutoff level of 400 pg/ml might serve as a useful predictive marker for anti-HCV therapy in HIV-HCV-coinfected patients because it could discriminate patients with expected NR or HCV relapse after therapy from patients with an SVR before starting antiviral treatment.


Asunto(s)
Antivirales/uso terapéutico , Quimiocina CXCL10/sangre , Infecciones por VIH/complicaciones , Hepatitis C/complicaciones , Inflamación/virología , Cirrosis Hepática/virología , Adulto , Biomarcadores , Quimiocina CXCL10/metabolismo , Relación Dosis-Respuesta a Droga , Genotipo , Hepacivirus/efectos de los fármacos , Hepacivirus/genética , Humanos , Interferón alfa-2 , Interferón-alfa/uso terapéutico , Persona de Mediana Edad , Polietilenglicoles/uso terapéutico , Proteínas Recombinantes , Recurrencia , Ribavirina/uso terapéutico , Sensibilidad y Especificidad , Carga Viral
12.
Wien Klin Wochenschr ; 128(11-12): 414-20, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26659706

RESUMEN

BACKGROUND: According to current guidelines, the universal use of direct-acting antiviral agents in HIV-positive patients with acute hepatitis C (AHC) is not recommended. We aimed to evaluate the concept of treatment intensification with boceprevir (BOC) in HIV-positive patients with HCV-genotype 1 AHC (HIV/AHC-GT1) at high risk for failure to pegylated interferon/ribavirin therapy (PEGIFN/RBV). METHODS: Nineteen consecutive HIV-positive patients with HIV/AHC-GT1 who underwent antiviral therapy were studied retrospectively. Patients were treated with PEGIFN/RBV for 24 or 48 weeks, depending on rapid virologic response (RVR; undetectable HCV-RNA at treatment week [W] 4). Patients without complete early virologic response (cEVR; undetectable HCV-RNA at W 12) were offered treatment intensification with BOC at W 12, resulting in 36 weeks of BOC/PEGIFN/RBV triple therapy (total treatment duration: 48 weeks). RESULTS: Thirty-seven percent (7/19) of patients had an RVR and 74 % (14/19) of patients had a cEVR. BOC was used in four out of five patients who did not achieve cEVR and one patient elected to proceed with PEGIFN/RBV. Sustained virologic response (SVR; undetectable HCV-RNA 24 weeks after the end of treatment) rates were 100 % (14/14) among patients with cEVR treated with PEGIFN/RBV and 75 % (3/4) among patients without cEVR receiving BOC add-on. The patient without cEVR who preferred to continue with PEGIFN/RBV did not achieve SVR. Thus, the overall SVR rate was 89 % (17/19) in intention to treat analysis. CONCLUSIONS: BOC add-on in selected HIV/AHC-GT1 resulted in a high overall SVR rate. If 2nd generation direct-acting antiviral agents (DAAs) are not available, treatment intensification with BOC can be considered in HIV/AHC-GT1 at high risk for failure to PEGIFN/RBV.


Asunto(s)
Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Hepatitis C/tratamiento farmacológico , Hepatitis C/virología , Prolina/análogos & derivados , Adulto , Antivirales/administración & dosificación , Relación Dosis-Respuesta a Droga , Vías de Administración de Medicamentos , Quimioterapia Combinada/métodos , Femenino , Infecciones por VIH/diagnóstico , Humanos , Interferón-alfa/administración & dosificación , Masculino , Polietilenglicoles/administración & dosificación , Prolina/administración & dosificación , Proteínas Recombinantes/administración & dosificación , Ribavirina/administración & dosificación , Resultado del Tratamiento
13.
Antivir Ther ; 19(4): 407-14, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24342953

RESUMEN

BACKGROUND: The aim of this study was to evaluate strategies for assignment of HIV-HCV genotype-1-coinfected patients (HIV-HCV-GT1) to either dual-therapy or direct-acting antiviral agent (DAA)-based triple-therapy. METHODS: A total of 148 treatment-naive HIV-HCV-GT1 who received antiviral therapy with pegylated interferon/ribavirin were included in this multinational, retrospective analysis. Patients with rapid virological response (RVR) were treated for 48 weeks, while patients without RVR received either 48 or 72 weeks of treatment. IL28B rs12979860 (IL28B) non-C/C, advanced liver fibrosis and high HCV RNA were considered as established risk factors for treatment failure. RESULTS: A trend toward higher sustained virological response (SVR) rates in patients with IL28B C/C (65% [37/57] versus 51% [40/79]; P=0.097) was observed. Higher SVR rates were observed in patients without advanced liver fibrosis (61% [47/77] versus 42% [22/52]); P=0.036) and without high HCV RNA (73% [35/48] versus 49% [49/100]; P=0.006), as well as in patients with RVR (90% [35/39] versus 45% [49/109]; P<0.001). SVR rates varied statistically significantly between the risk factors for treatment failure subgroups (86% [6/7] versus 69% [34/49] versus 48% [21/44] versus 20% [4/20] for zero, one, two and three risk factors, respectively; P<0.001). In patients without RVR, higher rates of SVR were observed in those treated for 72 weeks (62% [23/37]), when compared to patients treated for 48 weeks (36% [26/72]; P=0.01). CONCLUSIONS: RVR had an excellent positive predictive value for the response to dual-therapy in HIV-HCV-GT1, emphasizing the utility of a lead-in phase for assigning these patients to dual-therapy or DAA-based triple-therapy. The use of an IL28B-guided approach was suboptimal, while a combination of established baseline predictors may provide guidance for individual treatment decisions prior to the initiation of antiviral therapy. However, the extension of treatment duration to 72 weeks in HIV-HCV-GT1 without RVR should be strongly considered if triple-therapy is not available.


Asunto(s)
Antivirales/uso terapéutico , Coinfección , Infecciones por VIH/tratamiento farmacológico , VIH-1/genética , Hepacivirus/genética , Hepatitis C/tratamiento farmacológico , Adulto , Terapia Antirretroviral Altamente Activa , Recuento de Linfocito CD4 , Quimioterapia Combinada , Femenino , Genotipo , Infecciones por VIH/genética , Infecciones por VIH/inmunología , Infecciones por VIH/virología , Hepatitis C/complicaciones , Hepatitis C/genética , Hepatitis C/inmunología , Hepatitis C/virología , Humanos , Interferón-alfa/uso terapéutico , Interferones , Interleucinas/genética , Cirrosis Hepática/etiología , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Polietilenglicoles/uso terapéutico , Proteínas Recombinantes/uso terapéutico , Estudios Retrospectivos , Insuficiencia del Tratamiento , Resultado del Tratamiento , Carga Viral , Adulto Joven
14.
PLoS One ; 8(6): e66831, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23826153

RESUMEN

Pegylated-IFN and ribavirin remains the current treatment for chronic HCV infection in patients co-infected with HIV-1, but this regimen has low efficacy rates, particularly for HCV genotype 1/4 infection, has severe side effects and is extremely costly. Therefore, accurate prediction of treatment response is urgently required. We have recently shown that the NK cell gene, KIR2DS3 and a SNP associated with the IL28B gene synergise to increase the risk of chronic infection in primary HCV mono-infected patients. Identification of SNPs associated with the IL28B gene has also proven very powerful for predicting patient response to treatment. Patients co-infected with HIV-1 are of particular concern given they respond less well to HCV treatment, have more side effects and suffer a more rapid liver disease progression. In this study, we examined both IL28B and KIR2DS3 for their ability to predict treatment response in a cohort of HIV-1/HCV co-infected patients attending two treatment centres in Europe. We found that variation in both host genetic risk factors, IL28B and KIR2DS3, was strongly associated with sustained virological response (SVR) to treatment in our co-infected cohort (n = 149). The majority of patients who achieved a rapid virological response (RVR) achieved a SVR. However, it is currently impossible to predict treatment outcome in patients who fail to achieve an RVR. In our cohort, the presence of host genetic risk factors, IL28B-T and KIR2DS3 alleles, resulted in increased odds of treatment failure in these RVR negative patients (n = 88). Our data suggests that testing for host genetic factors will improve predicting treatment responsiveness in the clinical management of co-infected patients, and provides further evidence of the importance of the innate immune system in the immune response to HCV.


Asunto(s)
Infecciones por VIH/complicaciones , Hepatitis C/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Interleucinas/genética , Polietilenglicoles/uso terapéutico , Polimorfismo de Nucleótido Simple/genética , Receptores KIR/genética , Ribavirina/uso terapéutico , Adulto , Alelos , Estudios de Cohortes , Coinfección/complicaciones , Coinfección/tratamiento farmacológico , Coinfección/genética , Coinfección/inmunología , Femenino , Frecuencia de los Genes/genética , Sitios Genéticos/genética , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/genética , Infecciones por VIH/virología , VIH-1/efectos de los fármacos , Hepacivirus/efectos de los fármacos , Hepatitis C/genética , Hepatitis C/inmunología , Hepatitis C/virología , Humanos , Inmunidad Innata/inmunología , Interferón-alfa/farmacología , Interferones , Masculino , Persona de Mediana Edad , Polietilenglicoles/farmacología , Proteínas Recombinantes/farmacología , Proteínas Recombinantes/uso terapéutico , Ribavirina/farmacología , Factores de Riesgo , Resultado del Tratamiento
15.
AIDS ; 27(2): 227-32, 2013 Jan 14.
Artículo en Inglés | MEDLINE | ID: mdl-23238552

RESUMEN

BACKGROUND: Low 25-hydroxyvitamin D [25(OH)D] levels are commonly found in HIV-hepatitis C virus (HCV) coinfected patients and are associated with liver fibrosis. No association between 25(OH)D levels and response to pegylated interferon α-2a/2b plus ribavirin (PEGIFN + RBV) has yet been reported for HIV-HCV coinfected patients. DESIGN: Epidemiological characteristics, HIV and HCV infection parameters, liver biopsies, as well as data on virologic response was available in 65 patients who received chronic hepatitis C (CHC) therapy with PEGIFN + RBV within a prospective trial. 25(OH)D levels were retrospectively assessed using stored screening serum samples obtained within 35 days prior to CHC treatment. METHODS: According to their 25(OH)D levels, patients were assigned to the normal (>30 ng/ml; D-NORM), the insufficiency (10-30 ng/ml; D-INSUFF), or the deficiency (<10 ng/ml; D-DEF) group. HCV-GT 1/4, high HCV-RNA load (>6 × 10 IU/ml), advanced liver fibrosis (METAVIR F3/F4), and IL28B rs12979860non-C/C were considered as established risk factors for treatment failure in HIV-HCV coinfected patients. RESULTS: Thirty-seven (57%) and 15 (23%) patients presented with D-INSUFF and D-DEF, respectively, whereas only 13 (20%) patients had normal 25(OH)D levels. Substantial differences in cEVR (D-NORM 92% vs. D-INSUFF 68% vs. D-DEF 47%; P = 0.008) and SVR (D-NORM 85% vs. D-INSUFF 60% vs. D-DEF 40%; P = 0.029) rates were observed between 25(OH)D subgroups. Especially in difficult-to-treat patients with multiple (three to four) established risk factors, low 25(OH)D levels were clearly associated with lower rates of SVR [patients without 25(OH)D deficiency 52% vs. D-DEF 0%; P = 0.012]. CONCLUSION: Low 25(OH)D levels may impair virologic response to PEGIFN + RBV therapy, especially in difficult-to-treat patients. Vitamin D supplementation should be considered and evaluated prospectively in HIV-HCV coinfected patients receiving CHC treatment.


Asunto(s)
Antivirales/uso terapéutico , Infecciones por VIH/sangre , Hepatitis C Crónica/sangre , Deficiencia de Vitamina D/sangre , Vitamina D/sangre , Adulto , Coinfección , Quimioterapia Combinada , Femenino , VIH , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Hepacivirus , Hepatitis C Crónica/complicaciones , Hepatitis C Crónica/tratamiento farmacológico , Humanos , Interferón alfa-2 , Interferón-alfa/uso terapéutico , Masculino , Polietilenglicoles/uso terapéutico , Estudios Prospectivos , Ensayos Clínicos Controlados Aleatorios como Asunto , Proteínas Recombinantes/uso terapéutico , Ribavirina/uso terapéutico , Factores de Riesgo
16.
Antivir Ther ; 17(7): 1327-34, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22948263

RESUMEN

BACKGROUND: Patients coinfected with HIV and HCV are at risk for developing portal hypertension (PHT), hyperdynamic circulation and pulmonary arterial hypertension (PAH). Data on the influence of antiviral therapy with pegylated interferon-α (PEG-IFN-α) and ribavirin (RBV) are limited. METHODS: Haemodynamic parameters, including hepatic venous pressure gradient (HVPG), pulmonary arterial pressure (PAP(mean)), cardiac output (CO) and systemic vascular resistance (SysVR), were prospectively evaluated before and after PEG-IFN-α+RBV therapy in 80 HIV-HCV-coinfected patients. RESULTS: Baseline evaluation showed a mean HVPG of 4.7 mmHg, CO of 6.15 l/min and PAP(mean) of 14.8 mmHg. PHT was present in 26% of patients, hyperdynamic circulation in 5% and PAH in 4%. Patients with advanced fibrosis (METAVIR stage F3/F4; n=32) had significantly higher CO (P=0.008), lower SysVR (P=0.035), higher PAP(mean) (P=0.018) and higher pulmonary vascular resistance (P=0.022) than patients with stage F0-F2 fibrosis (n=48). Both hyperdynamic circulation and PAH were significantly associated with liver stiffness, fibrosis stage and portal pressure; a non-significant trend was found for CD4(+) T-cell counts and HIV RNA levels. No significant changes in PAP(mean), CO and SysVR were observed after PEG-IFN-α+RBV treatment, although a significant decrease in HVPG was noted in patients with HCV eradication (P=0.013). CONCLUSIONS: The overall prevalence of hyperdynamic circulation and PAH in HIV-HCV coinfection is low. Advanced fibrosis, increased liver stiffness, elevated portal pressure and probably CD4(+) T-cell count and HIV viraemia represent risk factors for hyperdynamic circulation and PAH. PHT is present in 26% of HIV-HCV-coinfected patients evaluated for antiviral therapy. Successful HCV eradication significantly decreases HVPG.


Asunto(s)
Coinfección/sangre , Infecciones por VIH/sangre , Hemodinámica , Hepatitis C Crónica/sangre , Interferón-alfa/uso terapéutico , Ribavirina/uso terapéutico , Adulto , Antirretrovirales/uso terapéutico , Recuento de Linfocito CD4 , Gasto Cardíaco , Coinfección/tratamiento farmacológico , Coinfección/virología , Hipertensión Pulmonar Primaria Familiar , Femenino , VIH/patogenicidad , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Hepacivirus/patogenicidad , Hepatitis C Crónica/tratamiento farmacológico , Hepatitis C Crónica/virología , Humanos , Hipertensión Portal/fisiopatología , Hipertensión Pulmonar/epidemiología , Hipertensión Pulmonar/fisiopatología , Hígado/efectos de los fármacos , Hígado/fisiopatología , Cirrosis Hepática/fisiopatología , Pulmón/efectos de los fármacos , Pulmón/fisiopatología , Masculino , Persona de Mediana Edad , Polietilenglicoles/uso terapéutico , Prevalencia , Estudios Prospectivos , ARN Viral/sangre , Factores de Riesgo , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Viremia/virología
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