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1.
Int J Radiat Oncol Biol Phys ; 117(1): 45-52, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37037359

RESUMO

PURPOSE: To compare transarterial chemoembolization delivered with drug eluting beads (TACE-DEB) with stereotactioc body radiation therapy (SBRT) in patients with hepatocellular carcinoma (HCC) in a multicenter randomized trial. METHODS AND MATERIALS: Patients were included if they were eligible for TACE. They could also be recruited if they required treatment prior to liver transplantation. A maximum of four TACE-DEB procedures and ablation after incomplete TACE-DEB were both allowed. SBRT was delivered in six fractions of 8-9Gy. Primary end point was time to progression (TTP). Secondary endpoints were local control (LC), overall survival (OS), response rate (RR), toxicity, and quality of life (QoL). The calculated sample size was 100 patients. RESULTS: Between May 2015 and April 2020, 30 patients were randomized to the study. Due to slow accrual the trial was closed prematurely. Two patients in the SBRT arm were considered ineligible leaving 16 patients in the TACE-DEB arm and 12 in the SBRT arm. Median follow-up was 28.1 months. Median TTP was 12 months for TACEDEB and 19 months for SBRT (p=0.15). Median LC was 12 months for TACE-DEB and >40 months (not reached) for SBRT (p=0.075). Median OS was 36.8 months for TACEDEB and 44.1 months for SBRT (p=0.36). A post-hoc analysis showed 100% for SBRT 1- and 2-year LC, and 54.4% and 43.6% for TACE-DEB (p=0.019). Both treatments resulted in RR>80%. Three episodes of possibly related toxicity grade ≥3 were observed after TACE-DEB. No episodes were observed after SBRT. QoL remained stable after both treatment arms. CONCLUSIONS: In this trial, TTP after TACE-DEB was not significantly improved by SBRT, while SBRT showed higher local antitumoral activity than TACE-DEB, without detrimental effects on OS, toxicity and QoL. To overcome poor accrual in randomized trials that include SBRT, and to generate evidence for including SBRT in treatment guidelines, international cooperation is needed.


Assuntos
Carcinoma Hepatocelular , Quimioembolização Terapêutica , Neoplasias Hepáticas , Radiocirurgia , Humanos , Radiocirurgia/efeitos adversos , Carcinoma Hepatocelular/radioterapia , Qualidade de Vida , Neoplasias Hepáticas/radioterapia
2.
Liver Int ; 43(4): 855-864, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36594353

RESUMO

BACKGROUND AND AIMS: While some articles describe outcome of pregnancy in autoimmune hepatitis (AIH), there are less data evaluating influence of AIH control on maternal and perinatal outcomes. This study analysed outcomes of pregnancy and related possible risk factors in AIH. METHOD: A retrospective multicentre cohort study on pregnancy in AIH was performed in 11 hospitals in the Netherlands. Maternal and neonatal outcomes were collected from records and completed by interview. Risk factors-including incomplete response, relapse and cirrhosis-for adverse outcomes were identified using logistic regression analysis. RESULTS: Ninety-seven pregnancies in 50 women resulted in 70 deliveries (72%) with a live birth rate of 98.5%. AIH relapse occurred in 6% during pregnancy, and in 27% of post-partum episodes. Absence of complete biochemical response at conception was identified as risk factor for the occurrence of gestational and post-partum relapses. Relapse of AIH in the year before conception was a risk factor for the occurrence of both gestational relapses and post-partum relapses. No complete biochemical response increased the risk for hypertensive disorders during pregnancy and intrahepatic cholestasis of pregnancy (ICP). Cirrhosis was found to be a risk factor for miscarriages, but not for other outcomes. CONCLUSION: Pregnancy in AIH is related to an increased incidence of maternal and fetal/neonatal complications; in most cases, outcome is good. Incomplete biochemical response at conception or relapse in the year before conception are risk factors for gestational and post-partum relapses, for hypertensive disorders and for ICP. Cirrhosis was a risk factor for miscarriages.


Assuntos
Aborto Espontâneo , Hepatite Autoimune , Hipertensão Induzida pela Gravidez , Complicações na Gravidez , Gravidez , Recém-Nascido , Humanos , Feminino , Estudos de Coortes , Hepatite Autoimune/complicações , Hepatite Autoimune/epidemiologia , Complicações na Gravidez/epidemiologia , Cirrose Hepática/complicações , Fibrose , Resultado da Gravidez , Estudos Retrospectivos
3.
Radiology ; 306(3): e220104, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36255308

RESUMO

Background Accumulation of lipid in the liver (ie, hepatic steatosis) is the basis of nonalcoholic fatty liver disease (NAFLD). Asymptomatic steatosis can lead to nonalcoholic steatohepatitis and downstream complications. Purpose To assess the diagnostic performance of calibrated US (CAUS) as a method for detection and staging of hepatic steatosis in comparison with liver biopsy. Materials and Methods Two-dimensional US images in 223 consecutive patients who underwent US-guided liver biopsy from May 2012 to February 2016 were retrospectively analyzed by two observers using CAUS. CAUS semiautomatically estimates echo-level and texture parameters, with particular interest in the residual attenuation coefficient (RAC), which is the remaining steatosis-driven attenuation obtained after correction of the beam profile. Data were correlated with patient characteristics and histologically determined steatosis grades and fibrosis stages. The data were equally divided into training and test sets to independently train and test logistic regression models for detection (>5% fat) and staging (>33% and >66% fat) of hepatic steatosis by using area under the receiver operating characteristic curve (AUC) analysis. Results A total of 195 patients (mean age, 50 years ± 13 [SD]; 110 men) were included and divided into a training set (n = 97 [50%]) and a test set (n = 98 [50%]). The average CAUS interobserver correlation coefficient was 0.95 (R range, 0.87-0.99). The best correlation with steatosis was found for the RAC parameter (R = 0.78, P < .01), while no correlation was found for fibrosis (R = 0.14, P = .054). Steatosis detection using RAC showed an AUC of 0.97 (95% CI: 0.94, 1.00), and the multivariable AUC was found to be 0.97 (95% CI: 0.95, 1.00). The predictive performance for moderate and severe hepatic steatosis using RAC was 0.93 (95% CI: 0.88, 0.98) and 0.93 (95% CI: 0.87, 0.98), respectively. Conclusion The calibrated US parameter residual attenuation coefficient detects and stages steatosis accurately with limited interobserver variability, and performance is not hampered by the presence of fibrosis. © RSNA, 2022 Online supplemental material is available for this article. See also the editorial by Grant in this issue.


Assuntos
Técnicas de Imagem por Elasticidade , Hepatopatia Gordurosa não Alcoólica , Masculino , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos , Fígado/diagnóstico por imagem , Fígado/patologia , Hepatopatia Gordurosa não Alcoólica/diagnóstico por imagem , Hepatopatia Gordurosa não Alcoólica/patologia , Curva ROC , Biópsia , Fibrose , Técnicas de Imagem por Elasticidade/métodos
4.
Eur J Cancer ; 137: 214-223, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32799035

RESUMO

OBJECTIVE: Evaluation of the trends in incidence, diagnostics, treatment and survival of patients with hepatocellular carcinoma (HCC) in the Netherlands. METHOD: Data regarding incidence, diagnostics, primary treatment and survival of patients with HCC in the period 2009-2016 were obtained from the Netherlands Cancer Registry. Trends in incidence, diagnostics, various treatment modalities (except liver transplantation, due to inaccurate data) and regional treatment preferences were analysed. Survival was evaluated using Kaplan-Meier curves and multivariable Cox proportional hazard regression modelling. RESULTS: In the period of 2009-2016, 3838 patients were diagnosed with HCC. A distinct decrease in the percentage of patients who underwent tumour biopsy was observed (from 51% in 2009-2010 to 42% in 2015-2016). Percentage of patients who underwent cancer treatment increased markedly (from 49% in 2009-2010 to 57% in 2015-2016), mainly because of an increasing use of resection and ablation. The number of hospitals where resections were performed or sorafenib treatment prescribed decreased slightly. The number of hospitals sporadically (<1 ablation per year) performing ablations increased. There were significant differences between regions in the application of resection, ablation and transarterial chemoembolisation /radioembolisation (p < 0.05 after 'case mix'-correction). One-, 3- and 5-year survival of patients with HCC significantly improved in the studied period. Receiving cancer treatment was associated with increased survival, whereas increasing age and an advanced tumour stage were both associated with decreased survival. CONCLUSION: From 2009 to 2016, patients with hepatocellular carcinoma more often received cancer treatment and their survival improved. There were significant differences in types of treatment between various regions.


Assuntos
Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/terapia , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/terapia , Idoso , Carcinoma Hepatocelular/mortalidade , Análise de Dados , Feminino , História do Século XXI , Humanos , Incidência , Neoplasias Hepáticas/mortalidade , Masculino , Pessoa de Meia-Idade , Países Baixos
5.
Expert Opin Investig Drugs ; 29(2): 117-123, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31523999

RESUMO

Introduction: Nonalcoholic fatty liver disease (NAFLD) encompasses a progressive disease phenotype starting from simple steatosis, which can progress to nonalcoholic steatohepatitis (NASH). It is component of the metabolic syndrome with a large impact on mortality in these patients. Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors that regulate lipid and insulin metabolism, two key components in pathophysiology of NAFLD and NASH. Elafibranor acts as an agonist of PPAR-α and PPAR-δ and is currently under development for the treatment of NAFLD.Areas covered: This review summarizes the pharmacological aspects, the preclinical and clinical effectivity, and safety data of elafibranor for the treatment of nonalcoholic steatohepatitis and fibrosis.Expert opinion: Current data support an effect of elafibranor on the resolution on NASH and the improvement of two key drivers of NASH progression - insulin resistance and serum lipid normalization. The safety profile is favorable, though reversible serum creatinine elevations occur with use, potentially limiting its use in patients with concurrent renal disease. The modest effect sizes in different NAFLD disease stages of elafibranor and other drugs in development for NASH, will likely lead to pursuing of drug combinations personalized to each stage of the NAFLD disease spectrum.


Assuntos
Chalconas/uso terapêutico , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Propionatos/uso terapêutico , Animais , Chalconas/efeitos adversos , Chalconas/farmacologia , Progressão da Doença , Humanos , Resistência à Insulina , Hepatopatia Gordurosa não Alcoólica/fisiopatologia , PPAR alfa/agonistas , PPAR delta/agonistas , Propionatos/efeitos adversos , Propionatos/farmacologia
6.
Eur J Gastroenterol Hepatol ; 32(6): 727-732, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-31658173

RESUMO

OBJECTIVE: Therapy for autoimmune hepatitis (AIH) consists of steroid induction therapy, followed by maintenance therapy with azathioprine. However, up to 20% of patients experience either insufficient response or intolerance on first-line therapy. Calcineurin inhibitors (CNIs) are frequently used when first-line therapy fails. Although a number of studies report on efficacy, less is known on the patient trajectory before switch to CNIs. Our aim was to describe the road toward CNI therapy in AIH patients. METHODS: Patients with an AIH diagnosis who used CNIs as either second- or third-line treatment were included in the study. Reason for switch to CNI was assessed as either an insufficient response or intolerance to prior therapy. Efficacy was assessed by normalization of transaminases at last moment of follow-up. RESULTS: Final analysis included 20 patients who were treated with CNIs. Ten patients were treated with tacrolimus and ten patients received cyclosporine. In patients who used CNI treatment as third-line therapy (n = 13), duration of first-line therapy was almost twice as long as duration of second-line therapy (2.58 years vs. 1.33 years; P = 0.67). Patients treated with tacrolimus had relatively high trough levels (7.6 ng/mL) and more (minor) adverse events. Fifty-five percent of patients had normalization of transaminases at last moment of follow-up. CONCLUSION: CNI treatment in AIH as second- or third-line therapy is effective in ~50% of patients. The trajectory before switch varies considerably between patients.


Assuntos
Inibidores de Calcineurina , Hepatite Autoimune , Adulto , Azatioprina/administração & dosagem , Azatioprina/efeitos adversos , Azatioprina/uso terapêutico , Inibidores de Calcineurina/administração & dosagem , Inibidores de Calcineurina/efeitos adversos , Inibidores de Calcineurina/uso terapêutico , Ciclosporina/administração & dosagem , Ciclosporina/efeitos adversos , Ciclosporina/uso terapêutico , Feminino , Glucocorticoides/administração & dosagem , Glucocorticoides/efeitos adversos , Glucocorticoides/uso terapêutico , Hepatite Autoimune/diagnóstico , Hepatite Autoimune/tratamento farmacológico , Humanos , Imunossupressores/administração & dosagem , Imunossupressores/efeitos adversos , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Tacrolimo/administração & dosagem , Tacrolimo/efeitos adversos , Tacrolimo/uso terapêutico , Falha de Tratamento , Resultado do Tratamento , Adulto Jovem
7.
Liver Int ; 39(11): 2024-2033, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31505092

RESUMO

Patients suffering from polycystic liver disease may develop Hepatic Venous Outflow Obstruction, Portal Vein Obstruction and/or Inferior Caval Vein Syndrome because of cystic mass effect. This can cause portal hypertension, leading to ascites, variceal haemorrhage or splenomegaly. For this review, we evaluate the evidence to provide clinical guidance for physicians faced with this complication. Diagnosis is made with imaging such as ultrasound, computed tomography or magnetic resonance imaging. Therapy includes conventional therapy with diuretics and paracentesis, and medical therapy using somatostatin analogues. Based on disease phenotype various (non-)surgical liver-volume reducing therapies, hepatic or portal venous stenting, transjugular intrahepatic portosystemic shunts and liver transplantation may be considered. Because of complicated anatomy, use of high-risk interventions and lack of empirical evidence, patients should be treated in expert centres.


Assuntos
Ascite/terapia , Cistos/cirurgia , Hemorragia Gastrointestinal/terapia , Hipertensão Portal/terapia , Hepatopatias/cirurgia , Ascite/etiologia , Cistos/complicações , Gerenciamento Clínico , Varizes Esofágicas e Gástricas/etiologia , Hemorragia Gastrointestinal/etiologia , Humanos , Hipertensão Portal/etiologia , Hepatopatias/complicações , Transplante de Fígado , Imageamento por Ressonância Magnética , Veia Porta/fisiopatologia , Derivação Portossistêmica Transjugular Intra-Hepática , Ensaios Clínicos Controlados Aleatórios como Assunto , Stents , Tomografia Computadorizada por Raios X
8.
Cytometry B Clin Cytom ; 96(6): 521-528, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31173462

RESUMO

BACKGROUND: Accurate assessment of hepatic steatosis is a key to grade disease severity in non-alcoholic fatty liver disease (NAFLD). METHODS: We developed a digital automated quantification of steatosis on whole-slide images (WSIs) of liver tissue and performed a validation study. Hematoxylin-eosin stained liver tissue slides were digitally scanned, and steatotic areas were manually annotated. We identified thresholds for size and roundness parameters by logistic regression to discriminate steatosis from surrounding liver tissue. The resulting algorithm produces a steatosis proportionate area (SPA; ratio of steatotic area to total tissue area described as percentage). The software can be implemented as a Java plug-in in FIJI, in which digital WSI can be processed automatically using the Pathomation extension. RESULTS: We obtained liver tissue specimens from 61 NAFLD patients and 18 controls. The area under the curve of correctly classified steatosis by the algorithm was 0.970 (95% CI 0.968-0.973), P < 0.001. Accuracy of the algorithm was 91.9%, with a classification error of 8.1%. SPA correlated significantly with steatosis grade (Rs = 0.845, CI: 0.749-0.902, P < 0.001) and increased significantly with each individual steatosis grade, except between Grade 2 and 3. CONCLUSIONS: We have developed a novel digital analysis algorithm that accurately quantifies steatosis on WSIs of liver tissue. This algorithm can be incorporated when quantification of steatosis is warranted, such as in clinical trials studying efficacy of new therapeutic interventions in NAFLD. © 2019 The Authors. Cytometry Part B: Clinical Cytometry published by Wiley Periodicals, Inc. on behalf of International Clinical Cytometry Society.


Assuntos
Algoritmos , Automação , Citometria de Fluxo , Interpretação de Imagem Assistida por Computador , Hepatopatia Gordurosa não Alcoólica/patologia , Humanos
9.
Mol Med ; 25(1): 16, 2019 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-31046673

RESUMO

INTRODUCTION: Non-alcoholic fatty liver disease (NAFLD) is becoming a major health problem worldwide. Inflammation plays an important role in disease pathogenesis and recent studies have shown a potential role for the neutrophil serine proteases (NSPs) proteinase-3 (PR3) and neutrophil elastase (NE) in NAFLD as well as an imbalance between NSPs and their natural inhibitor alpha-1 antitrypsin (AAT). The aim of this study was to investigate whether PR3 and NE plasma concentrations are associated with NAFLD and/or type 2 diabetes. METHODS: To explore this hypothesis we used several cohorts: a cohort of 271 obese individuals with liver steatosis, a cohort of 41 patients with biopsy-proven NAFLD, a cohort of 401 obese type 2 diabetes patients and a cohort of 205 lean healthy controls; and measured PR3 and NE plasma concentrations. In addition, we measured AAT plasma concentrations in order to investigate if the ratios between NSPs and their natural inhibitor were altered in NAFLD and type 2 diabetes when compared to healthy controls. RESULTS: Our data shows an increase in PR3 and NE concentrations and a decrease in AAT concentrations in obese patients when compared to controls. Moreover, PR3 plasma concentrations are increased in patients with liver steatosis. Furthermore, PR3 and NE concentrations in the liver are associated with the advanced stages of NAFLD characterized by NASH and/ or liver fibrosis. Additionally, PR3 and NE concentrations were up-regulated in patients with type 2 diabetes when compared to lean and obese controls. CONCLUSION: We conclude that circulating levels of NSPs associate with obesity-related metabolic disorders. Further research is needed to clearly establish the role of these proteases and investigate whether they could be used as non-invasive markers for NAFLD and/or type 2 diabetes.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/enzimologia , Elastase de Leucócito/sangue , Mieloblastina/sangue , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/enzimologia , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/sangue , Obesidade/enzimologia , Magreza/sangue , Magreza/enzimologia
12.
Eur Heart J ; 40(13): 1057-1068, 2019 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-30346512

RESUMO

AIMS: Liver fibrosis and cirrhosis are a consequence of a Fontan physiology, and determine prognosis. It is unclear whether non-invasive assessment of liver pathology is helpful to provide clinically relevant information. The aims of this study were to assess the spectrum of Fontan-associated liver disease (FALD) and usefulness of non-invasive methods to assess biopsy confirmed liver fibrosis. METHODS AND RESULTS: Hepatic screening of consecutive patients consisted of a blood panel, ultrasonography, elastography, contrast-enhanced magnetic resonance imaging (MRI)/computed tomography (CT) scan, and liver biopsy (scored with Fontan specific fibrosis scores and collagen proportionate area; CPA). Fibrosis parameters, varices, ascites, and splenomegaly were measured on imaging. Thirty-eight of 49 referred patients (27 ± 6.6 years, 73.7% male) underwent the complete screening protocol. Liver fibrosis on biopsy was present in all patients, and classified as severe (Stages 3-4) in 68%. Median CPA was 22.5% (16.9-29.5) and correlated with individual fibrosis scores. ELF® and liver stiffness were elevated, but MELD-XI scores were low in all patients. Fibrosis severity neither correlated to ELF® and liver stiffness, nor to (semi-) quantitative fibrosis parameters on MRI/CT. Varices were present in 50% and hyperenhancing nodules in 25% of patients, both independent of fibrosis stage, but varices were associated with higher CPA values. CONCLUSION: The FALD spectrum includes both hepatic congestion and severe fibrosis, with signs of portal hypertension and hyperenhancing nodules as significant manifestations. Routine imaging, transient elastography, and serum biomarkers are unable to accurately assess severity of liver fibrosis in this cohort. Future research should focus on validating new diagnostic tools with biopsy as the reference standard.


Assuntos
Técnica de Fontan/efeitos adversos , Cirrose Hepática/patologia , Fígado/patologia , Imagem Multimodal/métodos , Adulto , Biomarcadores/sangue , Biópsia/normas , Técnicas de Imagem por Elasticidade/métodos , Feminino , Técnica de Fontan/estatística & dados numéricos , Técnica de Fontan/tendências , Humanos , Hipertensão Portal/diagnóstico , Hipertensão Portal/epidemiologia , Fígado/diagnóstico por imagem , Cirrose Hepática/sangue , Cirrose Hepática/classificação , Cirrose Hepática/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Masculino , Imagem Multimodal/tendências , Prognóstico , Estudos Prospectivos , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia/métodos , Varizes/epidemiologia
13.
Histopathology ; 73(4): 612-621, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29856896

RESUMO

AIMS: The composition of several important extracellular matrix components (ECM) has not yet been elucidated in human non-alcoholic fatty liver disease (NAFLD). We aim to investigate the proportion of hepatic stellate cells (HSCs) and activity of matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs) in human NAFLD liver tissue with respect to severity of inflammation and fibrosis. METHODS AND RESULTS: Histopathological features were quantified by NAFLD activity score and grading assignment. The collagen proportionate area (CPA) was measured. Slides were stained with alpha-smooth muscle actin (α-SMA), as a marker of activated HSCs, and α-SMA was quantified digitally. Zymography was performed to measure the proteolytic activity of MMP-2 and MMP-9. TIMP-1 and TIMP-2 protein concentration was measured with enzyme-linked immunosorbent assay (ELISA). α-SMA was higher in severe fibrosis (6.3%, interquartile range 2.9-13.1) than mild and no fibrosis (median 1.1 and 0.9%, P < 0.001) and correlated strongly with CPA (Rs = 0.870, P < 0.001). ProMMP-2 activity in severe (4.1%, IQR 2.6-16.2) and mild fibrosis (2.7%, IQR 1.9-3.9) was higher than in no fibrosis (1.5%, (IQR 0.95-2.1); P = 0.001 and P = 0.046) and showed a moderate positive correlation with CPA (Rs = 0.495, P = 0.001). TIMP-1 and TIMP-2 were significantly higher in severe fibrosis than mild or no fibrosis. Both showed moderate correlation with CPA (TIMP-1: Rs = 0.471, P = 0.002 and TIMP-2: Rs = 0.325, P = 0.036). MMP-9 correlated as the only ECM component to inflammation severity. CONCLUSIONS: Advanced human NAFLD-fibrosis has a distinct ECM composition with increased HSCs and increased TIMP inhibition, but there is also ongoing remodelling activity of MMP-2.


Assuntos
Matriz Extracelular/patologia , Células Estreladas do Fígado/patologia , Cirrose Hepática/patologia , Hepatopatia Gordurosa não Alcoólica/patologia , Adulto , Idoso , Matriz Extracelular/metabolismo , Feminino , Células Estreladas do Fígado/metabolismo , Humanos , Cirrose Hepática/etiologia , Cirrose Hepática/metabolismo , Masculino , Metaloproteinases da Matriz/metabolismo , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/metabolismo , Inibidores Teciduais de Metaloproteinases/metabolismo
14.
Scand J Gastroenterol ; 52(8): 881-885, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28446050

RESUMO

OBJECTIVES: To assess the influence of smoking on histological disease severity and fibrosis in real-world NAFLD patients. MATERIAL AND METHODS: Consecutive NAFLD patients were identified with liver biopsies performed between 2008 and 2015. Characteristics such as smoking status and total number of pack years were collected. Biopsies were revised and BRUNT fibrosis and NAFLD activity score (NAS) determined. Patients with a high NAS (≥5) were compared to patients with a low NAS (<5) and with advanced fibrosis (stage 3-4) to patients with no-early fibrosis (stage 0-2). Patients with a history of smoking (current or past smoker) were defined ever smokers. RESULTS: Fifty-six patients were included (mean age 49 ± 14.3, 68.9% males and 39.3% history of smoking). Ever smokers had a higher fibrosis score than never smokers; two (IQR 0-3) versus one (IQR 1-1.5) (p = .040). Patients with advanced fibrosis smoked significantly more pack years than patients with no-early fibrosis; 10.6 (IQR 0-25.8) versus 0 (IQR 0-7) (p = .011). There is a weak to moderate correlation between fibrosis stage and number of pack years (Spearman's Rho = 0.341, p = .012). There was no difference in NAS between never and ever smokers; 2.8 ± 1.5 versus 3.3 ± 1.4 (p = .205). Patients with NAS <5 had a median number of pack years of 0 (IQR 0-9) versus a median of 10.3 pack years (IQR 0-24) in patients with NAS ≥5 (p = .127). CONCLUSION: Smoking is associated with severity of NAFLD-related liver fibrosis but not with histological disease severity. This supports the recommendation to cease smoking for NAFLD patients.


Assuntos
Cirrose Hepática/patologia , Cirrose Hepática/fisiopatologia , Hepatopatia Gordurosa não Alcoólica/complicações , Fumar/efeitos adversos , Adulto , Idoso , Biópsia , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Hepatopatia Gordurosa não Alcoólica/patologia , Índice de Gravidade de Doença
15.
J Clin Gastroenterol ; 51(6): e39-e47, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27466167

RESUMO

BACKGROUND: No golden diagnostic standard is available to diagnose chronic gastrointestinal ischemia (CGI). GOALS: We aimed to establish an accurate prediction model for CGI, based on clinical symptoms and radiologic evaluation of the amount of stenosis in the celiac artery (CA) and superior mesenteric artery (SMA) by means of computed tomography-angiography or magnetic resonance (MR)-angiography. STUDY: We prospectively included 436 consecutive patients with clinical suspicion of CGI in a tertiary referral center. Predictors for CGI were obtained by comparing clinical parameters to the diagnosis of CGI. Multivariable logistic regression was used to combine the strongest predictors in a model. A score chart based on the prediction model was provided to calculate the risk of CGI. RESULTS: CGI was present in 171/436 (39%) patients (67 y; range, 54 to 74 y; 27% male). Strongest predictors for CGI were female gender [odds ratio (OR)=1.44; 95% confidence interval (CI), 0.85-2.43], weight loss (OR=1.63, 95% CI, 0.98-2.72), concomitant cardiovascular disease (OR=1.70, 95% CI, 1.04-2.78), duration of symptoms (OR=0.88, 95% CI, 0.79-0.99), and stenosis of CA and SMA (50% to 70% stenosis CA: OR=1.33, 95% CI, 0.56-3.19; >70% stenosis CA: OR=5.79, 95% CI, 3.42-9.81; 50% to 70% stenosis SMA: OR=3.21, 95% CI, 0.81-12.74; >70% stenosis SMA: OR=4.39, 95% CI, 2.30-8.41). A model based on clinical symptoms alone showed limited discriminative ability for diagnosing CGI (c-statistic 0.62). Adding radiologic imaging of the mesenteric arteries improved the discriminative ability (c-statistic 0.79). CONCLUSIONS: Clinical symptoms alone are insufficient to predict the risk of CGI. Radiologic evaluation of the mesenteric arteries is essential. This tool may be useful for clinicians to assess the risk of CGI and to decide whether further diagnostic work-up for CGI is needed.


Assuntos
Angiografia por Tomografia Computadorizada/métodos , Gastroenteropatias/diagnóstico , Isquemia/diagnóstico , Angiografia por Ressonância Magnética/métodos , Idoso , Artéria Celíaca/diagnóstico por imagem , Doença Crônica , Feminino , Gastroenteropatias/diagnóstico por imagem , Gastroenteropatias/fisiopatologia , Humanos , Isquemia/diagnóstico por imagem , Isquemia/fisiopatologia , Modelos Logísticos , Masculino , Artéria Mesentérica Superior/diagnóstico por imagem , Pessoa de Meia-Idade , Análise Multivariada , Valor Preditivo dos Testes , Estudos Prospectivos
16.
Hepatology ; 64(5): 1817-1818, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27240057
17.
Antiviral Res ; 132: 70-5, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27237584

RESUMO

BACKGROUND: Currently, much effort is directed at further improving treatment for chronic hepatitis B patients by assessing the effect of immunomodulatory agents during therapy with nucleotide analogues (NUC). Although there are some reports on the effect of NUC therapy on peripheral natural killer (NK) cells, no studies investigated the long-term effects of NUC treatment on intrahepatic NK cells of chronic HBV patients. We aimed to prospectively investigate cell frequencies, phenotype, and activation status of intrahepatic NK cells of CHB patients on prolonged treatment with TDF. METHODS: Fine needle aspiration biopsies were collected from 11 chronic HBV patients at baseline, and at 12, 24, and 48 weeks of treatment with a daily 245 mg dose of TDF. Four patients underwent an additional aspiration biopsy after appoximately 6 years of treatment. RESULTS: Longitudinal evaluation of these patients during tenofovir therapy showed that all patients achieved a viral load reduction with undetectable DNA load after 48 weeks of therapy. Repeated sampling of the liver during therapy showed that the frequency of distinct lymphocyte populations in the liver remained unchanged despite viral load reduction. During the course of therapy, no modulation of the expression levels and frequencies of CD69, HLA-DR, NKG2A and NKG2D on liver NK cells were detected. However, evaluation of intrahepatic NK cell activation after continuous TDF therapy for 6 years demonstrated a mild increase in 3 out of 4 patients. CONCLUSIONS: Our findings provide a unique insight in the intrahepatic NK cell compartment in chronic HBV patients during prolonged treatment. We observed that long-term NUC-induced viral suppression, accompanied by gradual decrease of HBsAg levels, had no or only a limited effect on the frequencies, phenotype, and activation status of intrahepatic NK cells.


Assuntos
Antivirais/farmacologia , Vírus da Hepatite B/efeitos dos fármacos , Hepatite B Crônica/imunologia , Hepatite B Crônica/virologia , Células Matadoras Naturais/efeitos dos fármacos , Células Matadoras Naturais/imunologia , Ativação Linfocitária/efeitos dos fármacos , Tenofovir/farmacologia , Adulto , Antivirais/uso terapêutico , Biomarcadores , Feminino , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/metabolismo , Humanos , Imunofenotipagem , Fígado/imunologia , Fígado/virologia , Contagem de Linfócitos , Masculino , Pessoa de Meia-Idade , Subfamília C de Receptores Semelhantes a Lectina de Células NK/metabolismo , Subfamília K de Receptores Semelhantes a Lectina de Células NK/metabolismo , Fenótipo , Tenofovir/uso terapêutico , Carga Viral , Adulto Jovem
18.
Gastrointest Endosc ; 83(3): 627-36, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26324386

RESUMO

BACKGROUND AND AIMS: GI ischemia is a concerning adverse event of portal vein thrombosis (PVT). Minimally invasive techniques, such as visible light spectroscopy (VLS), have greatly improved the ability to diagnose GI ischemia. The aim of this study was to assess the clinical presentation and characteristics of GI ischemia in patients with PVT. METHODS: Patients with noncirrhotic, nonmalignant PVT were included in this prospective cohort study. Clinical symptoms of GI ischemia were assessed by a structured questionnaire, VLS, and radiologic evaluation of the mesenteric vasculature. VLS measurements were compared with those in patients with cirrhosis and with a reference population. RESULTS: We included 15 patients with chronic PVT and 1 patient with acute PVT (median age 46.1 years [interquartile range [IQR], 30.9-53.7]; 44% male). Decreased mucosal oxygenation in at least 1 location of the GI tract was found in 12 patients (75%). Compared with the reference population (median 60.0 [IQR, 56.2-61.7]), VLS measurements were mostly decreased in the descending duodenum in patients with PVT (median 55.5 [IQR, 52.3-58.8]; P = .02) and patients with cirrhosis (median 52.0 [IQR, 46.5-54.0], P = .003). Symptoms typical for GI ischemia, such as postprandial pain and exercise-induced pain, were reported in 10 patients (63%) with PVT. In patients with extension of thrombosis into the superior mesenteric vein and splenic vein and/or presence of hypercoagulability, decreased VLS measurements were observed compared with historical control subjects. CONCLUSIONS: In patients with chronic PVT, GI ischemia is frequent. VLS enables objective and quantitative determination of GI mucosal ischemia. Onset of abdominal symptoms such as postprandial pain should prompt the physician to re-evaluate extent, cause, and treatment of PVT.


Assuntos
Dor Abdominal/etiologia , Colite Isquêmica/etiologia , Trato Gastrointestinal/irrigação sanguínea , Cirrose Hepática/complicações , Isquemia Mesentérica/diagnóstico por imagem , Veia Porta , Trombose Venosa/complicações , Adulto , Idoso , Estudos de Coortes , Colite Isquêmica/diagnóstico por imagem , Duodeno/irrigação sanguínea , Feminino , Gastroscopia , Humanos , Masculino , Isquemia Mesentérica/etiologia , Veias Mesentéricas , Pessoa de Meia-Idade , Oximetria , Estudos Prospectivos , Análise Espectral , Estômago/irrigação sanguínea , Trombose Venosa/terapia , Adulto Jovem
19.
Hepatology ; 63(2): 581-9, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26517576

RESUMO

UNLABELLED: Gastroesophageal variceal bleeding in patients with cirrhosis is associated with significant morbidity and mortality, as well as a high rebleeding risk. Limited data are available on the role of transjugular intrahepatic portosystemic shunt (TIPS) with covered stents in patients receiving standard endoscopic, vasoactive, and antibiotic treatment. In this multicenter randomized trial, long-term endoscopic variceal ligation (EVL) or glue injection + ß-blocker treatment was compared with TIPS placement in 72 patients with a first or second episode of gastric and/or esophageal variceal bleeding, after hemodynamic stabilization upon endoscopic, vasoactive, and antibiotic treatment. Randomization was stratified according to Child-Pugh score. Kaplan-Meier (event-free) survival estimates were used for the endpoints rebleeding, death, treatment failure, and hepatic encephalopathy. During a median follow-up of 23 months, 10 (29%) of 35 patients in the endoscopy + ß-blocker group, as compared to 0 of 37 (0%) patients in the TIPS group, developed variceal rebleeding (P = 0.001). Mortality (TIPS 32% vs. endoscopy 26%; P = 0.418) and treatment failure (TIPS 38% vs. endoscopy 34%; P = 0.685) did not differ between groups. Early hepatic encephalopathy (within 1 year) was significantly more frequent in the TIPS group (35% vs. 14%; P = 0.035), but during long-term follow-up this difference diminished (38% vs. 23%; P = 0.121). CONCLUSIONS: In unselected patients with cirrhosis, who underwent successful endoscopic hemostasis for variceal bleeding, covered TIPS was superior to EVL + ß-blocker for reduction of variceal rebleeding, but did not improve survival. TIPS was associated with higher rates of early hepatic encephalopathy.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Endoscopia Gastrointestinal , Varizes Esofágicas e Gástricas/prevenção & controle , Hemorragia Gastrointestinal/prevenção & controle , Derivação Portossistêmica Transjugular Intra-Hepática/métodos , Stents , Adulto , Idoso , Terapia Combinada , Varizes Esofágicas e Gástricas/complicações , Varizes Esofágicas e Gástricas/mortalidade , Feminino , Hemorragia Gastrointestinal/etiologia , Hemorragia Gastrointestinal/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Politetrafluoretileno , Derivação Portossistêmica Transjugular Intra-Hepática/instrumentação , Desenho de Prótese , Recidiva , Falha de Tratamento
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