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1.
Liver Int ; 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39007640

RESUMO

BACKGROUND AND AIMS: Accurate biomarkers to predict outcomes following discontinuation of nucleos(t)ide analogue (NA) therapy are needed. We evaluated serum hepatitis B core-related antigen (HBcrAg) level as a biomarker for predicting outcomes after NA discontinuation. METHODS: Patients with HBeAg-negative chronic hepatitis B (CHB) without cirrhosis were enrolled in a prospective trial evaluating clinical outcomes until 96 weeks after NA discontinuation. End of treatment (EOT) and off-treatment levels of serum HBcrAg, HBsAg, HBV RNA and HBV DNA were used to predict key clinical outcomes including hepatitis flare (ALT ≥5 × ULN and HBV DNA > 2000 IU/mL). The SCALE-B score was calculated for the purposes of model validation. RESULTS: HBcrAg was tested amongst 65 participants. The median age was 54 years, 54% were male and 83% were Asian. HBcrAg was detectable in 86% patients. HBcrAg level ≥4 log U/mL at EOT was predictive of hepatitis flare [8/10 (80%) vs. 17/55 (31%), p = .001]. The presence of either HBcrAg ≥4 log U/mL or detectable HBV RNA at EOT predicted for both biochemical relapse and hepatitis flare. The SCALE-B model at EOT predicted for virological relapse, biochemical relapse, hepatitis flare and HBsAg loss in this cohort. An increase in the serum HBcrAg level off-treatment was also associated with hepatitis flare. No participant with EOT HBcrAg level ≥4 log U/mL achieved HBsAg loss. CONCLUSIONS: High levels of serum HBcrAg predict for hepatitis flare after stopping NA therapy and low likelihood of HBsAg loss at week 96. People with high levels of serum HBcrAg are not suitable candidates for NA discontinuation.

2.
Dig Dis Sci ; 69(4): 1496-1506, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38376788

RESUMO

BACKGROUND & AIMS: Concurrent hepatic steatosis has diverse effects on chronic hepatitis B (CHB), however the combined effects of metabolic dysfunction-associated steatotic liver disease (MASLD) and CHB on liver fibrosis progression remains unclear. The primary aim of this study was to utilize serial fibrosis measurements to compare the dynamic change in fibrosis in CHB patients with/without concurrent MASLD. The secondary aim was to investigate factors associated with steatosis development and regression in CHB patients. METHODS: This was a retrospective cohort study of all non-cirrhotic CHB patients identified from 1/1/2011 to 31/12/2016. Hepatic steatosis was diagnosed by ultrasound. Fibrosis markers included liver stiffness (LSM) by transient elastography, APRI and FIB-4. General linear mixed effects modelling was used to fit polynomial and linear estimates. RESULTS: Of 810 CHB patients (n = 2,373 LSM measurements; median age 44.4y; 48% male; 24% HBeAg positive), 14% had concurrent MASLD. LSM was higher at baseline but decreased in MASLD patients over time, while LSM remained stable in non-MASLD patients, such that all patients had similar LSM beyond 4-5 years. MASLD patients had lower APRI compared to non-MASLD patients, which was predominately due to a higher platelet count and higher ALT over time. There was substantial discordance between LSM, APRI and FIB-4. Baseline BMI was the only factor that predicted steatosis development and regression. CONCLUSIONS: We found no evidence of an association between concurrent MASLD and fibrosis progression amongst CHB patients without baseline advanced liver disease. APRI and FIB-4 may have reduced accuracy in MASLD patients.


Assuntos
Técnicas de Imagem por Elasticidade , Fígado Gorduroso , Hepatite B Crônica , Hepatopatia Gordurosa não Alcoólica , Humanos , Masculino , Adulto , Feminino , Hepatite B Crônica/complicações , Estudos Retrospectivos , Cirrose Hepática/diagnóstico , Fígado Gorduroso/complicações , Hepatopatia Gordurosa não Alcoólica/complicações
3.
J Hum Nutr Diet ; 36(3): 592-602, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-35962482

RESUMO

BACKGROUND: A Mediterranean diet (MD) appears to be beneficial in non-alcoholic fatty liver disease (NAFLD) patients in Mediterranean countries; however, the acceptability of a MD in non-Mediterranean populations has not been thoroughly explored. The present study aimed to explore the acceptability through understanding the barriers and enablers of the MD and low-fat diet (LFD) interventions as perceived by participating Australian adults from multicultural backgrounds with NAFLD. METHODS: Semi-structured telephone interviews were performed with 23 NAFLD trial participants at the end of a 12-week dietary intervention in a multicentre, parallel, randomised clinical trial. Data were analysed using thematic analysis. RESULTS: Participants reported that they enjoyed taking part in the MD and LFD interventions and perceived that they had positive health benefits from their participation. Compared with the LFD, the MD group placed greater emphasis on enjoyment and intention to maintain dietary changes. Novelty, convenience and the ability to swap food/meals were key enablers for the successful implementation for both of the dietary interventions. Flavour and enjoyment of food, expressed more prominently by MD intervention participants, were fundamental components of the diets with regard to reported adherence and intention to maintain dietary change. CONCLUSIONS: Participants randomised to the MD reported greater acceptability of the diet than those randomised to the LFD, predominantly related to perceived novelty and palatability of the diet.


Assuntos
Dieta Mediterrânea , Hepatopatia Gordurosa não Alcoólica , Adulto , Humanos , Dieta com Restrição de Gorduras , Austrália , Pacientes
4.
Heart Lung Circ ; 32(4): 535-543, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36642589

RESUMO

BACKGROUND AND AIMS: How to best monitor Fontan-associated liver disease (FALD) remains unclear. We describe results from a prospective liver care pathway in adults (n=84) with a Fontan circulation. METHODS: Routine assessment of the liver, by acoustic radiation force frequency and ultrasound was undertaken. Results, including liver biochemistry, systemic ventricular function (echocardiography), functional class, medication use and clinical endpoints (varices, hepatocellular carcinoma, heart transplantation and death) were collated. RESULTS: Most individuals returned a cirrhotic range acoustic radiation force impulse imaging (ARFI) result. ARFI values were greater in the proportion of individuals with hepatic nodularity (p=0.024). Univariate analysis demonstrated moderate correlation with platelet number (Spearmans rho= -0.376, p=0.049). Patients with clinical endpoints had lower platelets (p=0.012) but only a trend to hepatic nodularity (p=0.057). Clinical endpoints were more common in those with ventricular dysfunction (p=0.011). Multivariate analysis revealed that age at Fontan and being on angiotensin converting enzyme inhibitors (ACEI) predicted ARFI score (ß=0.06 [95% CI 0.01-0.09], p=0.007 and ß=0.53 [95% CI 0.17-0.89], p=0.005, respectively). However, these associations were not significant once adjusted for Fontan type, age at ARFI, systemic ventricle morphology, ventricle function, or Model for End-stage Liver Disease (MELD-XI) excluding international normalised ratio (INR) (p>0.05 for all). CONCLUSIONS: Ideal FALD monitoring remains unclear. ARFI has utility as a binary non-invasive indicator of cirrhosis, highlighting individuals who may need more frequent ongoing monitoring for hepatocellular carcinoma. However, no definite advantage to serial ARFI, once cirrhotic range ARFI results are present, has been identified.


Assuntos
Carcinoma Hepatocelular , Doença Hepática Terminal , Neoplasias Hepáticas , Adulto , Humanos , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/cirurgia , Carcinoma Hepatocelular/complicações , Doença Hepática Terminal/complicações , Estudos Prospectivos , Índice de Gravidade de Doença , Cirrose Hepática/complicações , Cirrose Hepática/diagnóstico , Neoplasias Hepáticas/complicações
5.
J Infect Dis ; 227(1): 123-132, 2022 12 28.
Artigo em Inglês | MEDLINE | ID: mdl-36108079

RESUMO

BACKGROUND: We evaluated the patterns of peripheral Toll-like receptor (TLR) signaling activity and the expression of TLRs and natural killer (NK) cell activation in a cohort of patients experiencing severe hepatitis flares after stopping nucleot(s)ide analogues (NAs) therapy. METHODS: Samples were collected longitudinally from patients with chronic hepatitis B who were enrolled in a prospective study of NA discontinuation. Patients experiencing hepatitis flares were compared with patients with normal alanine aminotransferase. Peripheral blood mononuclear cells (PBMCs) were stimulated with TLR ligands and cytokine secretion in the cell culture supernatant measured. Expression of TLR2/4, NKG2D, NKp46, and triggering receptor expressed on myeloid cells 1 (TREM-1) on monocytes, NK, and NK-T cells was measured. RESULTS: Seventeen patients with severe reactivation hepatitis flares were compared to 12 nonflare patients. Hepatitis flares were associated with increased activity of TLR2-8 and TLR9 signaling in PBMCs at the time of peak flare compared to baseline. Hepatitis flares were also associated with (1) upregulation of TLR2 and (2) TREM-1 receptor expression on NK. There were no differences at baseline between flare patients and nonflare patients. CONCLUSIONS: Hepatitis flares off NA therapy have a significant innate inflammatory response with upregulation of TLR signaling on peripheral monocytes and TLR2 and TREM-1 expression on NK cells. This implicates the innate immune system in the immunopathogenesis of hepatitis B flares.


Assuntos
Hepatite B Crônica , Células T Matadoras Naturais , Humanos , Vírus da Hepatite B , Receptor 2 Toll-Like , Receptor Gatilho 1 Expresso em Células Mieloides , Estudos Prospectivos , Receptores Toll-Like , Transdução de Sinais , Antivirais/uso terapêutico , Antígenos E da Hepatite B
6.
Liver Int ; 42(6): 1308-1322, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35357066

RESUMO

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is predominantly managed by lifestyle intervention, in the absence of effective pharmacotherapies. Mediterranean diet (MedDiet) is the recommended diet, albeit with limited evidence. AIMS: To compare an ad libitum MedDiet to low-fat diet (LFD) in patients with NAFLD for reducing intrahepatic lipids (IHL) by proton magnetic resonance spectroscopy (1 H-MRS). Secondary outcomes include insulin resistance by homeostatic model of assessment (HOMA-IR), visceral fat by bioelectrical impedance analysis (BIA), liver stiffness measurement (LSM) and other metabolic outcomes. METHODS: In this parallel multicentre RCT, subjects were randomised (1:1) to MedDiet or LFD for 12 weeks. RESULTS: Forty-two participants (25 females [60%], mean age 52.3 ± 12.6 years) were included, 23 randomised to LFD and 19 to MedDiet.; 39 completed the study. Following 12 weeks, there were no between-group differences. IHL improved significantly within the LFD group (-17% [log scale]; p = .02) but not within the MedDiet group (-8%, p = .069). HOMA-IR reduced in the LFD group (6.5 ± 5.6 to 5.5 ± 5.5, p < .01) but not in the MedDiet group (4.4 ± 3.2 to 3.9 ± 2.3, p = .07). No differences were found for LSM (MedDiet 7.8 ± 4.0 to 7.6 ± 5.2, p = .429; LFD 11.8 ± 14.3 to 10.8 ± 10.2 p = .99). Visceral fat reduced significantly in both groups; LFD (-76% [log scale], p = <.0005), MedDiet (-61%, p = <.0005). CONCLUSIONS: There were no between-group differences for hepatic and metabolic outcomes when comparing MedDiet to LFD. LFD improved IHL and insulin resistance. Significant improvements in visceral fat were seen within both groups. This study highlights provision of dietary interventions in free-living adults with NAFLD is challenging.


Assuntos
Dieta Mediterrânea , Resistência à Insulina , Hepatopatia Gordurosa não Alcoólica , Adulto , Dieta com Restrição de Gorduras , Feminino , Humanos , Fígado/patologia , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/patologia
7.
Intern Med J ; 51(5): 802-805, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-34047022

RESUMO

Iron overload is described in Asian patients but presents with a different phenotype and genotype compared to Caucasian patients. We retrospectively identified 64 Asian patients and compared them to 64 matched non-Asian patients with at least one episode of serum ferritin >500 µg/L. Of the Asian patients, one (1.6%) had proven iron overload, while other common causes of hyperferritinaemia included recent blood transfusion (47%), acute infection (11%) and haematological malignancy (8%). A greater proportion of non-Asian patients had hyperferritinaemia secondary to high alcohol intake. Iron overload is rare in Asians and unexplained hyperferritinaemia in Asian patients is more likely to be due to other factors.


Assuntos
Ferritinas , Sobrecarga de Ferro , Povo Asiático , Austrália/epidemiologia , Humanos , Sobrecarga de Ferro/diagnóstico , Estudos Retrospectivos
8.
Ann Hepatol ; 25: 100549, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34614431

RESUMO

Malnutrition among patients with chronic liver disease (CLD) is a common complication with significant prognostic implications for patients with liver cirrhosis. Micronutrient deficiency has been associated with an increased risk of hepatic decompensation and is an independent risk factor for mortality among cirrhotic patients. Micronutrient deficiencies in patients with CLD include zinc, vitamin A, vitamin D and selenium. This review article aims to evaluate the literature to date on the complications of zinc deficiency in patients with CLD. A management algorithm for zinc replacement has also been proposed.


Assuntos
Suplementos Nutricionais , Hepatopatias/terapia , Oligoelementos/uso terapêutico , Zinco/uso terapêutico , Doença Crônica , Humanos , Hepatopatias/diagnóstico , Hepatopatias/etiologia
9.
Scand J Gastroenterol ; 55(11): 1309-1317, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33070650

RESUMO

BACKGROUND: As data is limited on the outcomes of calcineurin inhibitors (CNI) in autoimmune hepatitis (AIH), we evaluated the efficacy and safety of CNI in AIH patients who failed prior treatment(s). METHODS: A retrospective study was performed of AIH patients who received cyclosporine A (CsA) and/or tacrolimus (TAC) after prior treatment(s) failure. Records were reviewed for baseline demographic and clinical characteristics, and treatment outcomes. The primary outcome was biochemical remission.Results: Thirty-three AIH patients received CNI across seven liver centers:17 received CsA, 21 TAC and 5 TAC after CsA failure/intolerance. 82% received CNI for an insufficient response to treatment(s). Overall, 48% of CNI treated patients achieved biochemical remission including 41% in prior non-responders and 83% in treatment intolerant patients. Remission rates with CNI as second-line and third-line therapy were 63% and 29% respectively. There were no baseline predictors of response to CNI on multivariate analysis. Eighteen (55%) patients developed significant side effects and 8 (24%) discontinued due to intolerance. Three patients required liver transplantation for decompensated cirrhosis and 6 patients died including one from malignancy possibly related to CNI. CONCLUSION: CNI salvage therapy is well tolerated and moderately effective achieving remission in around 50% of AIH who failed standard therapy.


Assuntos
Inibidores de Calcineurina , Hepatite Autoimune , Ciclosporina/efeitos adversos , Hepatite Autoimune/tratamento farmacológico , Humanos , Imunossupressores/efeitos adversos , Estudos Retrospectivos , Terapia de Salvação , Tacrolimo/efeitos adversos , Resultado do Tratamento
11.
Intern Med J ; 48(11): 1369-1376, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29845719

RESUMO

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease globally, with increased rates in high-risk populations, including type 2 diabetes and obesity. The condition increases the risk of end-stage liver disease, hepatocellular carcinoma and all-cause mortality. NAFLD is asymptomatic and often remains undiagnosed as routine screening in high-risk groups is not practised. AIMS: The aim of this study was to determine the rates and characteristics of NAFLD patients attending liver clinics at two Melbourne metropolitan hospitals. METHODS: Liver clinics were prospectively screened for 10 consecutive months and participants with a diagnosis of NAFLD were further evaluated using pathology and imaging results obtained from medical records. RESULTS: Of the 2050 patients screened, 148 (7%) had NAFLD predominantly diagnosed using ultrasound (81%). NAFLD patients were obese (mean body mass index 30.7 ± 5.9 kg/m2 ), insulin resistant (median HOMA 4.2 (3.2) mmol/L) and had elevated liver enzymes (ALT median, males 47.0 (34.3), females 36.0 (28.0) U/L), and 18% of patients had liver stiffness measuring >12 kPa, suggesting a moderate probability of cirrhosis. Patients with liver stiffness measuring ≥9.6 kPa had significantly higher: glucose (median 5.5 (1.2) vs 6.2 (5.3) mmol/L, P = 0.007), aspartate aminotransferase levels (median 25.5 (26.0) vs 41.0 (62.0) u/L, P = 0.0005) and HOMA (3.1 (3.0) vs 5.4 (5.5) mmol/L, P = 0.040). CONCLUSIONS: NAFLD constituted a minority of liver clinic patients, most of who were obese, insulin resistant and hypertensive, and many had an elevated liver stiffness measurement. NAFLD poses added adverse health outcomes to high-risk patients, and therefore, early detection is warranted.


Assuntos
Hepatopatia Gordurosa não Alcoólica/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Comorbidade , Feminino , Humanos , Hipertensão/epidemiologia , Cirrose Hepática/epidemiologia , Masculino , Programas de Rastreamento/estatística & dados numéricos , Síndrome Metabólica/epidemiologia , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/diagnóstico por imagem , Obesidade/epidemiologia , Prevalência , Estudos Prospectivos , Fatores de Risco , Ultrassonografia , Vitória/epidemiologia
12.
J Ultrasound Med ; 37(3): 647-656, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28960385

RESUMO

OBJECTIVES: A new 2-dimensional (2D) shear wave elastographic (SWE) device has been developed for the noninvasive assessment of liver fibrosis. Guidelines on measurement acquisition parameters are not yet well established for this technique. Our study aimed to assess 2D SWE measurement variability and to determine the number of measurements required per patient to reliably assess liver stiffness. METHODS: Two-dimensional SWE was assessed in 55 patients with mixed-etiology chronic liver disease on an Aplio 500 ultrasound system (Toshiba Medical Systems Corporation, Tochigi, Japan). Ten measurements were obtained per patient by an operator blinded to all preceding readings. Results were analyzed with clinical information obtained from medical records. RESULTS: The median interquartile range/median ratio for 2D SWE was 0.131 (quartiles 1-3, 0.089-0.174). Five readings provided an approximation within 0.11 m/s, or 4.2% of the median velocity of 10 measurements. Factors associated with increased measurement variability included body mass index (ρ = 0.388; P = .01), increased skin-to-liver capsule distance (ρ = 0.426; P = .002), and measurements taken within 1.5 cm of the liver capsule (P < .001). Measurements with heterogeneous shear wave profiles (indicated by a region of interest [ROI] SD/speed ratio > 0.15) showed greater deviation from the set's median velocity than those with an ROI SD/speed ratio of 0.15 or lower (0.42 versus 0.22 m/s; P = .001). CONCLUSIONS: Two-dimensional SWE showed low overall measurement variability, with a minimum of 5 readings providing equivalent precision to the existing method using 10 samples. Obesity, increasing abdominal wall thickness, subcapsular measurements and an ROI SD/speed ratio of greater than 0.15 were all associated with increased measurement variability. The ROI SD/speed ratio warrants further evaluation as a quality assessment metric, to allow objective operator assessment of individual 2D SWE measurement reliability in real time.


Assuntos
Técnicas de Imagem por Elasticidade/métodos , Cirrose Hepática/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Fígado/diagnóstico por imagem , Hepatopatias/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Reprodutibilidade dos Testes , Adulto Jovem
13.
J Gastroenterol Hepatol ; 32(4): 797-802, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27784128

RESUMO

BACKGROUND AND AIM: Women who are homozygous for the p.C282Y mutation in the HFE gene are at much lower risk of iron overload-related disease than p.C282Y homozygous men, presumably because of the iron-depleting effects of menstruation and pregnancy. We used data from a population cohort study to model the impact of menstruation cessation at menopause on serum ferritin (SF) levels in female p.C282Y homozygotes, with p.C282Y/p.H63D simple or compound heterozygotes and those with neither p.C282Y nor p.H63D mutations (HFE wild types) as comparison groups. METHODS: A sample of the Melbourne Collaborative Cohort Study was selected for the "HealthIron" study (n = 1438) including all HFE p.C282Y homozygotes plus a random sample stratified by HFE-genotype (p.C282Y and p.H63D). The relationship between the natural logarithm of SF and time since menopause was examined using linear mixed models incorporating spline smoothing. RESULTS: For p.C282Y homozygotes, SF increased by a factor of 3.6 (95% CI (1.8, 7.0), P < 0.001) during the first 10 years postmenopause, after which SF continued to increase but at less than half the previous rate. In contrast, SF profiles for other HFE genotype groups increase more gradually and did not show a distinction between premenopausal and postmenopausal SF levels. Only p.C282Y homozygotes had predicted SF exceeding 200 µg/L postmenopause, but the projected SF did not increase the risk of iron overload-related disease. CONCLUSIONS: These data provide the first documented evidence that physiological blood loss is a major factor in determining the marked gender difference in expression of p.C282Y homozygosity.


Assuntos
Ferritinas/sangue , Predisposição Genética para Doença/genética , Genótipo , Proteína da Hemocromatose/genética , Hemocromatose/genética , Homozigoto , Menopausa/sangue , Menopausa/genética , Mutação/genética , Adulto , Idoso , Austrália , Estudos de Coortes , Feminino , Humanos , Pessoa de Meia-Idade
14.
BMC Gastroenterol ; 16: 14, 2016 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-26831892

RESUMO

BACKGROUND: Non-alcoholic fatty liver disease, the most prevalent liver disease in developed countries, remains difficult to manage with no proven safe and effective pharmacotherapy available. While weight reduction is the most commonly practiced treatment strategy, this is difficult to both achieve and/or maintain in the majority. Furthermore evidence-based dietary recommendations to guide the nutritional management of these patients are lacking. Using a randomised controlled trial design, this study compares the effectiveness of the Mediterranean diet to a standard low fat diet in terms of differences in insulin sensitivity, hepatic steatosis and metabolic outcomes in participants with non-alcoholic fatty liver disease. METHODS: Ninety four eligible patients who have non-alcoholic fatty liver disease and who are insulin resistant, will be randomised into either a Mediterranean or low fat diet group for a 3 month intervention period. Insulin sensitivity will be measured on peripheral blood using Homeostatic Model Assessment and liver fat content quantified using Magnetic Resonance Spectroscopy. Both arms will consist of three face to face and three telephone call follow up consultations delivered by an Accredited Practicing Dietitian. The intervention arm focuses on recommendations from the traditional Mediterranean diet which have been tailored for use in the Australian population The standard arm uses the Australian Guide to Healthy Eating and the Australian National Heart Foundation dietary guidelines. Study recruitment will take place at four major metropolitan hospitals in Melbourne, Australia. Data collection will occur at all face to face reviews including baseline, 6, and 12 weeks. A follow up assessment to measure sustainability will take place at 6 and 12 months. The primary end point is improved insulin sensitivity scores at the 12 week time point. DISCUSSION: This trial aims to demonstrate in a large cohort of participants with NALFD that a Mediterranean diet independent of weight loss can result in significant benefits in liver fat and insulin sensitivity and that these changes are sustained at 12 months. These metabolic changes would potentially lead to reductions in the risk of chronic liver disease, heart disease, type 2 diabetes and liver cancer. TRIAL REGISTRATION: Australia and New Zealand Clinical Trials Register ACTRN: ACTRN12615001010583 .


Assuntos
Dieta com Restrição de Gorduras , Dieta Mediterrânea , Hepatopatia Gordurosa não Alcoólica/dietoterapia , Adiposidade , Adulto , Austrália , Protocolos Clínicos , Feminino , Humanos , Insulina/sangue , Resistência à Insulina , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/sangue , Política Nutricional , Adulto Jovem
15.
J Gastroenterol Hepatol ; 30(4): 719-25, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25311314

RESUMO

BACKGROUND AND AIM: The risk of hemochromatosis-related morbidity for HFE simple heterozygosity for either the C282Y or H63D substitutions in the HFE protein was assessed using a prospective community-based cohort study. METHODS: HFE genotypes were measured for 31,192 persons of northern European descent, aged between 40 and 69 years when recruited to the Melbourne Collaborative Cohort Study, and subjects were followed for an average of 12 years. For a random sample of 1438 participants stratified according to HFE genotype, two sets of biochemical iron indices performed 12 years apart and, at follow-up only, the presence/absence of six disease features associated with hereditary hemochromatosis were obtained. Summary data for 257 (139 female) C282Y simple heterozygotes and 123 (74 female) H63D simple heterozygotes were compared with 330 (181 female) controls with neither HFE mutation. RESULTS: At baseline, mean transferrin saturation (TS) (95% confidence interval) and prevalence of TS > 55% were 35.14% (33.25, 37.04) and 3/112 (3%), 33.03% (29.9, 36.15) and 0/39 (0%), and 29.67% (27.93, 31.4) and 3/135 (2%) for C282Y, H63D and wild-type male participants, respectively. At follow-up, mean TS levels remained similar to baseline levels for both men and women irrespective of simple heterozygosity for either mutation. No HFE C282Y or H63D simple heterozygotes had documented iron overload (based on hepatic iron measures or serum ferritin greater than 1000 mg/L at baseline with documented therapeutic venesection). CONCLUSION: No documented iron overload was observed for HFE simple heterozygotes for either C282Y or H63D, and morbidity for both HFE simple heterozygote groups was similar to that of HFE wild-type participants.


Assuntos
Hemocromatose/genética , Heterozigoto , Antígenos de Histocompatibilidade Classe I/genética , Proteínas de Membrana/genética , Adulto , Idoso , Estudos de Coortes , Feminino , Genótipo , Hemocromatose/epidemiologia , Proteína da Hemocromatose , Humanos , Sobrecarga de Ferro , Masculino , Pessoa de Meia-Idade , Morbidade , Estudos Prospectivos , Fatores de Tempo
16.
Hepatol Commun ; 8(5)2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38696372

RESUMO

BACKGROUND: The benefits of regular surveillance imaging for cholangiocarcinoma in patients with primary sclerosing cholangitis (PSC) are unclear. Hence, we aimed to evaluate the impact of regular magnetic resonance cholangiopancreatography (MRCP) on outcomes of patients with PSC in Australia, where the practice of MRCP surveillance is variable. METHODS: The relationship between MRCP surveillance and survival outcomes was assessed in a multicenter, retrospective cohort of patients with PSC from 9 tertiary liver centers in Australia. An inverse probability of treatment weighting approach was used to balance groups across potentially confounding covariates. RESULTS: A total of 298 patients with PSC with 2117 person-years of follow-up were included. Two hundred and twenty patients (73.8%) had undergone MRCP surveillance. Regular surveillance was associated with a 71% reduced risk of death on multivariate weighted Cox analysis (HR: 0.29, 95% CI: 0.14-0.59, p < 0.001) and increased likelihood of having earlier endoscopic retrograde cholangiopancreatography from the date of PSC diagnosis in patients with a dominant stricture (p < 0.001). However, survival posthepatobiliary cancer diagnosis was not significantly different between both groups (p = 0.74). Patients who had surveillance of less than 1 scan a year (n = 41) had comparable survival (HR: 0.46, 95% CI 0.16-1.35, p = 0.16) compared to patients who had surveillance at least yearly (n = 172). CONCLUSIONS: In this multicenter cohort study that employed inverse probability of treatment weighting to minimize selection bias, regular MRCP was associated with improved overall survival in patients with PSC; however, there was no difference in survival after hepatobiliary cancer diagnosis. Further prospective studies are needed to confirm the benefits of regular MRCP and optimal imaging interval in patients with PSC.


Assuntos
Colangiocarcinoma , Colangiopancreatografia por Ressonância Magnética , Colangite Esclerosante , Humanos , Colangite Esclerosante/mortalidade , Colangite Esclerosante/complicações , Colangite Esclerosante/diagnóstico por imagem , Masculino , Feminino , Estudos Retrospectivos , Pessoa de Meia-Idade , Austrália/epidemiologia , Adulto , Colangiocarcinoma/mortalidade , Colangiocarcinoma/diagnóstico por imagem , Neoplasias dos Ductos Biliares/mortalidade , Neoplasias dos Ductos Biliares/diagnóstico por imagem , Idoso
17.
Nutr Res ; 119: 98-108, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37801761

RESUMO

Nonalcoholic fatty liver disease (NAFLD) affects approximately 30% of adults worldwide, with chronic low-grade inflammation being a key pathophysiological feature of progression. The Mediterranean diet (MedDiet) is recognized for improving metabolic and hepatic outcomes in people with diabetes and NAFLD, in part, via anti-inflammatory properties. The aim of this study was to determine the effect of an ad libitum MedDiet versus low-fat diet (LFD) on inflammatory markers in adults with NAFLD. It was hypothesized that the MedDiet, and its individual components, would improve inflammation. This multicenter, randomized controlled trial, randomized participants to a MedDiet or LFD intervention for 12 weeks. Primary outcomes included change from baseline to 12 weeks for serum high-sensitivity C-reactive protein, interleukin-6, tumor necrosis factor-α, adiponectin, leptin, and resistin. Forty-two participants (60% female; age 52.3 ± 12.6 years; body mass index, 32.2 ± 6.2 kg/m²) were randomized to the MedDiet (n = 19) or low-fat diet (n = 23). At 12 weeks, the LFD showed a greater decrease in leptin compared with the MedDiet (-1.20 ± 3.9 ng/mL vs 0.64 ± 3.5 ng/mL, P = .010). Adiponectin significantly improved within the MedDiet (13.7 ± 9.2 µg/mL to 17.0 ± 12.5 µg/mL, P = .016), but not within the LFD group. No statistically significant changes were observed for other inflammatory markers following the MedDiet or LFD. Adherence to the MedDiet significantly improved in both study arms, although greater improvements were seen in the MedDiet group. Adiponectin significantly improved following a Mediterranean diet intervention, in the absence of weight loss. The low-fat diet did not elicit improvements in inflammatory markers. High-quality clinical trials appropriately powered to inflammatory markers are required in this population.


Assuntos
Dieta Mediterrânea , Hepatopatia Gordurosa não Alcoólica , Humanos , Adulto , Feminino , Pessoa de Meia-Idade , Masculino , Adiponectina , Leptina , Inflamação
18.
Hepatol Commun ; 7(8)2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37459199

RESUMO

BACKGROUND AND AIMS: HBV RNA in peripheral blood reflects HBV cccDNA transcriptional activity and may predict clinical outcomes. The prospective Melbourne HBV-STOP trial studied nucleot(s)ide analog discontinuation in HBeAg-negative non-cirrhotic participants with long-term virological suppression. Ninety-six weeks after stopping treatment, the proportion of participants with virological relapse (HBV DNA > 2000 IU/mL), biochemical relapse (ALT > 2 × ULN and HBV DNA > 2000 IU/mL), or hepatitis flare (ALT > 5 × ULN and HBV DNA > 2000 IU/mL) was 89%, 58%, and 38%, respectively. We evaluated the ability of serum HBV RNA levels to predict these outcomes. APPROACH RESULTS: HBV RNA levels were measured using the Roche cobas 6800/8800 HBV RNA Investigational Assay. Sixty-five participants had baseline and longitudinal off-treatment specimens available for RNA testing. HBV RNA was detectable at baseline in 25% of participants and was associated with a higher risk of biochemical relapse (81% vs. 51%, p value 0.04) and hepatitis flare (63% vs. 31%, p value 0.04). Participants who had undetectable serum HBV RNA as well as HBsAg ≤ 100 IU/mL at baseline were less likely to experience virological relapse (4 of 9, 44%) than participants with detectable HBV RNA and HBsAg level > 100 IU/mL (15/15, 100%; p value 0.0009). Off-treatment levels of HBV RNA were correlated with HBV DNA and were associated with the risk of hepatitis flare. CONCLUSIONS: Serum HBV RNA may be a useful biomarker for guiding clinical decision-making before stopping nucleot(s)ide analog therapy. Baseline HBV RNA and HBsAg levels are associated with the risk of clinical relapse, hepatitis flare, and disease remission off-treatment.


Assuntos
Hepatite B Crônica , Nucleosídeos , Humanos , Antivirais/uso terapêutico , DNA Viral , Antígenos E da Hepatite B , Antígenos de Superfície da Hepatite B , Vírus da Hepatite B/genética , Hepatite B Crônica/tratamento farmacológico , Nucleosídeos/uso terapêutico , Estudos Prospectivos , RNA , Exacerbação dos Sintomas
19.
Nutrients ; 14(18)2022 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-36145251

RESUMO

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) has become the most prevalent liver disease in Australia and is recognised to play a role in the development of hepatocellular carcinoma (HCC). There are no clear guidelines regarding screening for HCC in NAFLD. The aim of this retrospective study was to compare the characteristics and survival rates of NAFLD-HCC to patients with non-NAFLD-HCC to help guide future research in this area. METHODS: A total of 152 HCC patients with either NAFLD (n = 36) or non-NAFLD (n = 116) were retrospectively analysed from the HCC database and medical records. Chi-square and independent t-test were used to compare baseline characteristics and Kaplan-Meier curves and Cox models were used for survival analysis. RESULTS: Patients with NAFLD-HCC were more likely to be diagnosed due to symptoms rather than through screening, and at an older age, compared with non-NAFLD HCC. The median survival rates were lower in NAFLD-HCC (17.2 months) than in those with non-NAFLD-HCC (23.5 months). CONCLUSION: There is a rise in the number of HCC cases in patients with NAFLD, and this has significant implications for hepatologists as they are presented with more advanced diseases and have poorer outcomes. Future studies on HCC will need to identify this group earlier in order to have an impact on the HCC survival rate.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Hepatopatia Gordurosa não Alcoólica , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/etiologia , Humanos , Cirrose Hepática , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/diagnóstico , Estudos Retrospectivos , Fatores de Risco
20.
Curr Oncol ; 30(1): 48-74, 2022 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-36661654

RESUMO

Emerging evidence indicates an association between non-alcoholic fatty liver disease (NAFLD), cancer development and mortality. Cancer treatment-induced metabolic and hepatic dysfunction may be associated with increased rates of NAFLD. The review aims to investigate current evidence surrounding NAFLD in adults (≥18 years) with cancer including prevalence, effect of cancer treatments, metabolic co-morbidities, and mortality. Embase, Scopus, PubMed, and CINAHL were searched from inception to December 2021 including randomized controlled trials and observational studies. Twenty-three articles were included, comprising 142,218 participants. The overall risk of bias for observational studies was determined as low for 10 studies and neutral for 12 studies, and the RCT was determined as some concerns. The prevalence of NAFLD, based on imaging or histology, in adults with cancer ranged from 0.5 to 81.3%, with higher prevalence in breast, colorectal and gynecological cancers. Higher rates of NAFLD were also seen in patients who (i) underwent treatments-including chemotherapy and hormone therapy and/or who (ii) had higher BMI or other metabolic co-morbidities. NAFLD was associated with an increase in all-cause and cancer-related mortality. Based on review results, it is recommended that further assessment is carried out to determine whether liver screening in high-risk patients is cost effective and if interventions can be implemented to improve hepatic and health outcomes in adults with cancer.


Assuntos
Neoplasias , Hepatopatia Gordurosa não Alcoólica , Adulto , Humanos , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Hepatopatia Gordurosa não Alcoólica/epidemiologia , Comorbidade , Neoplasias/complicações , Neoplasias/terapia , Neoplasias/epidemiologia
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