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2.
Liver Int ; 34(10): 1504-12, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24661740

RESUMO

BACKGROUND & AIMS: The modulation of gut flora constitutes a therapeutic tool in patients with liver disease, but some of its modalities require further investigation. Here, we evaluated the effects of probiotics on the hepatic and systemic haemodynamic alterations of advanced liver disease. METHODS: Seventeen patients with cirrhosis and ascites were prospectively included, five of whom abandoned this study prematurely. Hepatic and systemic haemodynamic evaluations were performed at baseline and after 6 weeks of receiving an oral VSL#3 probiotic preparation. Peripheral blood analyses included the evaluation of cytokines (TNF-alpha, IL-1beta, IL-6), bacterial translocation [bacterial DNA and lipopolysaccharide-binding protein (LBP)] and nitric oxide end-products (NOx). RESULTS: In 12 patients completing this study, the oral administration of VSL#3 resulted in reductions of the hepatic venous pressure gradient (HVPG, P < 0.001), cardiac index and heart rate (both P < 0.01) and in increases of the systemic vascular resistance (P < 0.05) and mean arterial pressure (P = 0.06). HVPG decreased at least 10% from baseline in eight patients (67%). Serum sodium increased in most patients (P < 0.01). All these changes were unrelated to the detection of bacterial DNA or to the levels of LBP, pro-inflammatory cytokines or NOx. No significant adverse effects were observed. CONCLUSION: Administration of the probiotic mixture VSL#3 improved the hepatic and systemic haemodynamics and serum sodium levels in patients with cirrhosis. Our results identify major effects of probiotics in liver disease and provide the rationale for assessing their therapeutic potential against the progression of portal hypertension and its complications in future clinical trials.


Assuntos
Ascite/fisiopatologia , Hemodinâmica/efeitos dos fármacos , Cirrose Hepática/fisiopatologia , Probióticos/farmacologia , Proteínas de Fase Aguda , Administração Oral , Adulto , Idoso , Sequência de Bases , Proteínas de Transporte/sangue , Citocinas/sangue , Primers do DNA/genética , DNA Bacteriano/sangue , DNA Bacteriano/genética , Frequência Cardíaca/efeitos dos fármacos , Humanos , Glicoproteínas de Membrana/sangue , Pessoa de Meia-Idade , Dados de Sequência Molecular , Probióticos/administração & dosagem , Estudos Prospectivos , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Sódio/sangue , Espanha , Estatísticas não Paramétricas , Resistência Vascular/efeitos dos fármacos , Pressão Venosa/efeitos dos fármacos
3.
Am J Gastroenterol ; 101(10): 2269-74, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17032192

RESUMO

BACKGROUND: Antiviral therapy (AVT) may improve liver histology in patients with advanced viral hepatitis but its effect on portal pressure remains unknown. AIM: This study was aimed to evaluate the influence of antiviral therapy (AVT) on hepatic venous pressure gradient (HVPG) in hepatitis C virus infected patients with portal hypertension. METHODS: Twenty compensated patients with chronic hepatitis C, fibrosis stage 3 or 4 and HVPG > 5 mmHg received PEG-IFN alpha2b plus ribavirin. Every patient underwent liver biopsy and portal pressure measurements before and immediately after AT. Biopsies were evaluated according to METAVIR score. RESULTS: HVPG significantly dropped in all but one treated patient, with a mean (SD) reduction of 28.2 (12)%[13.8 (5.6) Vs. 10.2 (3.8) mmHg, p = 0.005]. The percentage of HVPG decrease was significantly greater in patients who achieved a virological end of treatment response [26.2 (12.5)% Vs. 12.7 (8.5)%, p = 0.05] and in those with a decrease of at least 2 points in the grade of inflammation [35.7 (4.5)% Vs. 22.1 (9.5)%, p = 0.015]. Nine out of 11 patients with baseline HVPG > or = 12 mmHg showed a decrease greater than 20% (3/11) or under the 12 mmHg threshold (6/11). CONCLUSIONS: AVT reduces HVPG in compensated patients with advanced hepatitis C (fibrosis stage 3 or 4) and portal hypertension.


Assuntos
Antivirais/farmacologia , Hepatite C Crônica/fisiopatologia , Interferon-alfa/farmacologia , Cirrose Hepática/fisiopatologia , Pressão na Veia Porta/efeitos dos fármacos , Ribavirina/farmacologia , Adulto , Antivirais/administração & dosagem , Quimioterapia Combinada , Feminino , Veias Hepáticas/fisiopatologia , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Humanos , Interferon alfa-2 , Interferon-alfa/administração & dosagem , Cirrose Hepática/virologia , Masculino , Pessoa de Meia-Idade , Polietilenoglicóis , Estudos Prospectivos , Proteínas Recombinantes , Ribavirina/administração & dosagem
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