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1.
Arch. endocrinol. metab. (Online) ; 65(6): 730-738, Nov.-Dec. 2021. tab, graf
Article in English | LILACS | ID: biblio-1349983

ABSTRACT

ABSTRACT Objective: Identifying significant fibrosis is crucial to evaluate the prognosis and therapeutic interventions in patients with nonalcoholic fatty liver disease (NAFLD). We assessed the performance of acoustic radiation force impulse (ARFI) elastography, APRI, FIB-4, Forns, NFS and BARD scores in determining liver fibrosis in severe obesity. Subjects and methods: A prospective study included 108 patients undergoing bariatric surgery. Liver biopsy specimens were obtained intraoperatively and classified according to the NAFLD Activity Score. Patients were assessed with serological markers and shear wave velocity of the liver was measured with the Siemens S2000 ultrasound system preoperatively. Optimal cut-off values were determined using the area under the receiver operating characteristic curves (AUROC). Results: In the entire cohort prevalence of NAFLD was 80.6%, steatohepatitis 25.9% and significant fibrosis 19.4%. The best tests for predicting significant fibrosis were FIB-4 and Forns scores (both AUROC 0.78), followed by APRI (AUROC 0.74), NFS (AUROC 0.68), BARD (AUROC 0.64) and ARFI (AUROC 0.62). ARFI elastography was successful in 73% of the patients. Higher body mass index (BMI) correlated with invalid ARFI measurements. In patients with BMI < 42 kg/m2, ARFI showed 92.3% sensitivity and 82,6% specificity for the presence of significant fibrosis, with AUROC 0.86 and cut-off 1.32 m/s. Conclusions: FIB-4 and Forns scores were the most accurate for the prediction of significant fibrosis in bariatric patients. Applicability and accuracy of ARFI was limited in individuals with severe obesity. In patients with BMI < 42 kg/m2, ARFI elastography was capable for predicting significant fibrosis with relevant accuracy.


Subject(s)
Humans , Obesity, Morbid/complications , Obesity, Morbid/diagnostic imaging , Prospective Studies , Elasticity Imaging Techniques , Non-alcoholic Fatty Liver Disease/pathology , Non-alcoholic Fatty Liver Disease/diagnostic imaging , Acoustics , Biopsy , Risk Factors , ROC Curve , Liver/pathology , Liver/diagnostic imaging , Liver Cirrhosis/pathology , Liver Cirrhosis/diagnostic imaging
2.
Rev. Assoc. Med. Bras. (1992) ; 67(7): 1021-1025, July 2021. tab, graf
Article in English | LILACS | ID: biblio-1346962

ABSTRACT

SUMMARY OBJECTIVE: Gamma-glutamyl transpeptidase-platelet ratio, system inflammation response index, and systemic immune inflammation index are three systemic immune and inflammation indexes that were investigated for their diagnostic and prognostic proficiencies in cardiovascular diseases and cancers. However, their predictive values for invasive aspergillosis have not yet been studied. The aim of this study was to evaluate Gamma-glutamyl transpeptidase-platelet ratio, system inflammation response index, and systemic immune inflammation index levels and their diagnostic values in invasive aspergillosis. METHODS: A total of 23 patients with invasive aspergillosis and 23 sex- and age-matched healthy participants were included in this study. Complete blood count parameters and liver function tests were studied. Gamma-glutamyl transpeptidase-platelet ratio, system inflammation response index, and systemic immune inflammation index were calculated. RESULTS: Leukocyte, neutrophil, lymphocyte, and monocyte levels were statistically significantly higher in IA group (p=0.031, p=0.027, p=0.033, and p=0.001, respectively). In invasive aspergillosis group, platelets were numerically lower; Aspartate transaminase, alanine aminotransferase, and lactic dehydrogenase levels were numerically higher than those in control group but differences between levels were not statistically significant (p>0.05). The γ-glutamyl transpeptidase levels of patients were statistically significantly higher (p=0.007), and in addition, statistically significant differences were found between groups in terms of gamma-glutamyl transpeptidase-platelet ratio, system inflammation response index, and systemic immune inflammation index (p<0.001, p=0.037, p=0.001, respectively). Receiver operating characteristic analysis was performed, and areas under the curves were evaluated. gamma-glutamyl transpeptidase-platelet ratio had the higher area under the curve than systemic immune inflammation index and system inflammation response index (AUC 0.849, 0.798, 0.693, respectively). The results from receiver operating characteristic analysis of the data suggested that the use of a cutoff value of 0.15 for gamma-glutamyl transpeptidase-platelet ratio would be optimum for clinical use to confirm independent predictors of patients with invasive aspergillosis. CONCLUSIONS: Gamma-glutamyl transpeptidase-platelet ratio is an independent, a useful predictor, and is superior to other evaluated markers in the diagnosis of inflammation in invasive aspergillosis. Gamma-glutamyl transpeptidase-platelet ratio may also be a helpful biomarker for clinicians to follow-up the inflammatory process of these patients.


Subject(s)
Humans , Aspergillosis/pathology , gamma-Glutamyltransferase , Platelet Count , Blood Platelets , Retrospective Studies , ROC Curve , Inflammation/pathology , Liver Cirrhosis/pathology
4.
Arq. gastroenterol ; 58(2): 131-138, Apr.-June 2021. tab, graf
Article in English | LILACS | ID: biblio-1285331

ABSTRACT

ABSTRACT BACKGROUND: Individuals with cirrhosis have a chronic systemic inflammation associated with an immune dysfunction, affecting the progression of the liver disease. The neutrophil-lymphocyte ratio (NLR) was proposed as a marker of systemic inflammatory response and survival in patients with cirrhosis. OBJECTIVE: Evaluate the prognostic role of NLR in cirrhotic patients and its relation with inflammatory cytokines(IL-6, IL-10 and IL-17). METHODS: In this prospective study two groups were evaluated: 1) Stable cirrhotic in outpatient follow-up (n=193); 2) Hospitalized cirrhotic for acute decompensation for at least 48 hours (n=334) with admission and 48 hours tests evaluation. Circulating inflammatory cytokines were available for 130 hospitalized patients. RESULTS: In outpatients with stable cirrhosis, NLR correlated with MELD score and other variables associated with severity of disease. However, after a median of 32 months of follow up NLR was not associated with mortality (HR 1.058, 95%CI 0.900-1.243; P=0.495). In hospitalized patients, NLR at 48-hour after admission was independently associated with 90-day survival (HR 1.061, 95%CI 1.020-1.103; P=0.003) in multivariate Cox-regression analysis. The 90-day Kaplan-Meier survival probability was 87% for patients with a 48-hour NLR <3.6 and 62% for NLR ≥3.6 (P<0.001). Elevation of NLR in the first 48 hours was also independently associated with mortality (HR 2.038, 95%CI 1295-3207; P=0.002). The 90-day Kaplan-Meier survival probability was 83% when NLR did not increase and 62% when NLR increased (P<0.001). IL-6, IL-10 and IL-17 at admission were positively correlated with both admission and 48-hour NLR. Lower levels of baseline IL-10 were associated with NLR increase during first 48-hour. CONCLUSION: NLR evaluated at 48 hours of hospitalization and its early increase after admission were independently associated with short-term mortality in patients hospitalized for acute decompensation of cirrhosis.


RESUMO CONTEXTO: Na cirrose há um quadro crônico de inflamação sistêmica associada a disfunção imune, que impactam na progressão da doença hepática. A razão neutrófilo-linfócito (RNL) foi proposta como um marcador de resposta inflamatória sistêmica e sobrevida em pacientes com cirrose hepática. OBJETIVO: Avaliar o papel de RNL como marcador prognóstico em portadores de cirrose hepática e sua relação com citocinas inflamatórias (IL-6, IL-10 e IL-17). MÉTODOS: É um estudo prospectivo com duas coortes: 1) pacientes cirróticos estáveis em acompanhamento ambulatorial (n=193); 2) pacientes cirróticos hospitalizados por descompensação aguda por no mínimo 48 horas (n=334) com avaliação de exames de admissão de 48 horas. Citocinas inflamatórias séricas estavam disponíveis em 130 pacientes hospitalizados. RESULTADOS: Nos pacientes ambulatoriais com cirrose estável, RNL se correlacionou com MELD e outras variáveis associadas com gravidade da doença. Entretanto, após uma mediana de 32 meses de seguimento, RNL não apresentou associação com mortalidade (HR 1.058, 95%CI 0.900-1.243; P=0.495). Nos pacientes hospitalizados, RNL de 48 horas após a admissão apresentou associação independente com sobrevida em 90 dias (HR 1.061, 95%CI 1.020-1.103; P=0.003) na regressão multivariada de Cox. A probabilidade de sobrevivência pela curva de Kaplan-Meier em 90 dias foi de 87% em pacientes com RNL de 48 horas <3.6 e 62% nos pacientes com RNL ≥3.6 (P<0.001). A elevação de RNL nas primeiras 48 horas também foi um fator independente associado a mortalidade (HR 2.038, 95%CI 1295-3207; P=0.002). A avaliação de sobrevida em 90 dias pela curva de Kaplan-Meier foi de 83% nos pacientes em que RNL não apresentou elevação e 62% nos que apresentaram elevação de RNL (P<0.001). IL-6, IL-10 e IL-17 na admissão se correlacionaram positivamente com RNL de admissão e de 48 horas. Níveis mais baixos de IL-10 basal foram associados com elevação de RNL nas primeiras 48 horas. CONCLUSÃO: RNL avaliada em 48 horas de hospitalização e sua elevação precoce após a admissão foram fatores independentemente associados a mortalidade em curto prazo nos pacientes hospitalizados com descompensação aguda da cirrose.


Subject(s)
Humans , Lymphocytes , Neutrophils/pathology , Prognosis , Prospective Studies , Retrospective Studies , Liver Cirrhosis/complications , Liver Cirrhosis/pathology
5.
Arq. gastroenterol ; 58(2): 139-144, Apr.-June 2021. tab, graf
Article in English | LILACS | ID: biblio-1285330

ABSTRACT

ABSTRACT BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most prevalent liver disease in the world, and its prevalence is increasing alongside obesity. In United States, NAFLD is already the second leading cause of liver transplantation. The spectrum of the disease ranges from simple steatosis, which has a benign course, to steatohepatitis, which may progress to cirrhosis and its complications. The rising of noninvasive methods for diagnosing and staging non-alcoholic steatohepatitis (NASH) and fibrosis decreases the need of liver biopsy, as well as the costs and the occurrence of complications related to it. OBJECTIVE: To analyze the performance of the triglyceride-glucose index to evaluate steatosis, NASH and liver fibrosis in obese patients with NAFLD. METHODS: This is a retrospective cross-sectional study. Every medical record of patients who were candidates for bariatric surgery at a leading hospital in Southern Brazil were analyzed. The triglyceride-glucose index (TyG Index), a method composed only of two simple laboratory tests (serum triglycerides and fasting glucose levels), was performed prior to surgery. The TyG Index performance regarding the anatomopathological findings was evaluated, and the AUROC curve was calculated to evaluate the best cut-off point for diagnosing steatosis, non-alcoholic steatohepatitis and liver fibrosis grade. Also, the NAFLD fibrosis Score (NFS) was evaluated. RESULTS: A total of 423 patients were evaluated. The TyG Index with a cut-off point of 8.76 excluded significant simple steatosis (grade 2-3) in obese patients, with 67.6% sensitivity, 65.1% specificity, 46.3% positive predictive value (PPV), 81.8% negative predictive value (NPV), 65.8% accuracy and 0.66 AUROC (P=0.005). In the evaluation of NASH, the TyG Index with a cut-off point of 8.82 excluded significant NASH (grade 2-3) with 57.3% sensitivity, 58.6% specificity, 33.7% PPV, 78.8% NPV, 58.2% accuracy and 0.58 AUROC (P=0.022). When evaluating liver fibrosis, the TyG Index with a cut-off point of 8.91 showed a sensitivity of 61.8%, a specificity of 62.5%, a PPV of 13.8 and a NPV of 94.4% for exclusion of advanced fibrosis (F3-4), with a 62.4% accuracy and 0.69 AUROC (P<0.001). When analyzing the performance of NFS in the diagnosis of advanced fibrosis, the cut-off point <-1.455 excluded advanced fibrosis with sensitivity of 59.4%, specificity of 51%, PPV of 11%, NPV of 92.4% and accuracy of 51.7%. However, the cut-off point of 0.676 to diagnose advanced fibrosis presented sensitivity of 21.9%, specificity of 83%, PPV of 11.7%, NPV of 91.2% and 77.3% accuracy. The AUROC was 0.54 (P=0.480). CONCLUSION: TyG Index did not perform well in the diagnosis of significant steatosis and NASH. However, it was able to exclude advanced fibrosis in obese patients who are candidates for bariatric surgery.


RESUMO CONTEXTO: A doença hepática gordurosa não-alcoólica (DHGNA) é a doença hepática mais prevalente no mundo. Nos Estados Unidos, a DHGNA já é a segunda causa de transplante hepático. O espectro da doença abrange desde a esteatose simples, que apresenta curso benigno, até esteato-hepatite não-alcoólica (EHNA), que pode progredir para cirrose e suas complicações. O desenvolvimento de métodos não invasivos para o diagnóstico e estadiamento da EHNA e da fibrose hepática visa diminuir a necessidade de biópsia hepática, um procedimento invasivo e não raro associado a complicações. OBJETIVO: Analisar o desempenho do índice triglicerídeo-glicose (TyG Index) para o diagnóstico e estadiamento da DHGNA em pacientes obesos. MÉTODOS: Este é um estudo transversal retrospectivo. Foram analisados todos os prontuários de pacientes candidatos a cirurgia bariátrica em um hospital de referência do Sul do Brasil e calculado o TyG Index, um escore composto por dois exames laboratoriais (triglicerídeos e glicose de jejum), realizados previamente à cirurgia. O desempenho do TyG Index em relação aos achados anatomopatológicos hepáticos foi avaliado, e calculada a curva ROC para avaliação de esteatose simples, EHNA e fibrose hepática. O NAFLD Fibrosis Score (NFS) também foi avaliado. RESULTADOS: Foram avaliados 423 pacientes. O melhor ponto de corte do TyG Index para a exclusão de esteatose simples significativa (grau 2-3) foi de 8,76, com sensibilidade 67,6%, especificidade 65,1%, valor preditivo positivo (VPP) 46,3%, valor preditivo negativo (VPN) 81,8%, acurácia 65,8% e AUROC 0,66 (P=0,005). Na avaliação de EHNA significativa (grau 2-3), o melhor ponto de corte foi de 8,82 com sensibilidade 57,3%, especificidade 58,6%, VPP 33,7%, VPN 78,8%, acurácia 58,8% e AUROC 0,58 (P=0,022). Em relação à fibrose avançada (grau 3-4), o melhor ponto de corte do TyG Index foi de 8,91 com sensibilidade 61,8%, especificidade 62,5%, VPP 13,8%, VPN 94,4%, acurácia 62,4% e AUROC 0,69 (P<0,001). Ao analisarmos o desempenho do NFS no diagnóstico de fibrose avançada, o ponto de corte de <-1,455 excluiu fibrose avançada com sensibilidade 59,4%, especificidade 51%, VPP 11%, VPN 92,4% e acurácia 51,7%. Entretanto, o ponto de corte de 0,676 para fibrose avançada apresentou sensibilidade de 21,9%, especificidade 83%, VPP 11,7%, VPN 91,2% e acurácia 77,3%. A AUROC foi de 0,54 (P=0,480). CONCLUSÃO: O TyG Index não apresentou bom desempenho para o diagnóstico e estadiamento da esteatose simples e da EHNA. Entretanto, foi capaz de excluir fibrose avançada em pacientes obesos candidatos a cirurgia bariátrica.


Subject(s)
Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/pathology , Triglycerides , Biopsy , Cross-Sectional Studies , Retrospective Studies , Glucose , Liver/pathology , Liver Cirrhosis/pathology , Obesity
6.
Chinese Journal of Hepatology ; (12): 1132-1136, 2021.
Article in Chinese | WPRIM | ID: wpr-922702

ABSTRACT

Hepatic fibrogenesis (HF) is the common consequence of various chronic liver diseases (CLD) induced by a variety of pathogenic factors. The mechanism of HF involves the interactions within different types of liver cells, cytokines, chemokines, cell mediators and multiple signaling pathways in a way of networks. As a result, excessive production and deposition of extracellular matrix (ECM) mainly composed of type I and type III fibril forming collagen destroys the original morphology, structure and function of the liver. The activation of hepatic stellate cells (HSCs), the major scar forming cells in liver, plays a crucial role in hepatic fibrogenesis. MicroRNAs are a group of short, single stranded, non-coding RNAs that can inhibit mRNA expression at the transcriptional and post transcriptional levels. They can be loaded and transferred as cargos by exosomes, to regulate the function of nearby and distant receptive cells. The expressions of many microRNAs such as miR-21, miR-29, miR-708, miR-101, miR-455, miR-146, miR-193 change significantly in activated HSCs, which regulate the activation, fibrogenic function, proliferation, apoptosis and autophagy of HSCs via affecting target genes expression and signaling pathway molecules. They are important substances and regulatory mechanism that mediate the initiation and progression of HF.


Subject(s)
Cell Proliferation , Gene Expression Regulation , Hepatic Stellate Cells , Humans , Liver Cirrhosis/pathology , MicroRNAs/genetics
7.
Article in Chinese | WPRIM | ID: wpr-879264

ABSTRACT

Unhealthy diet, habits and drug abuse cause a variety of liver diseases, including steatohepatitis, liver fibrosis, liver cirrhosis and liver cancer, which seriously affect human health. The fabrication of highly simulated cell models in vitro is important in the treatment of liver diseases and drug development. This article summarized the common strategies for the construction of liver pathology models


Subject(s)
Animals , Disease Models, Animal , Humans , Liver , Liver Cirrhosis/pathology , Liver Neoplasms/pathology , Non-alcoholic Fatty Liver Disease/pathology
8.
Rev. Col. Bras. Cir ; 48: e20202913, 2021. tab, graf
Article in English | LILACS | ID: biblio-1287885

ABSTRACT

ABSTRACT Background and Aims: An association between non-alcoholic fatty liver disease (NAFLD) and pancreatic ductal adenocarcinoma (PDAC) has been previously suggested. This study aims at investigating this association and at identifying potential links between variables of the NAFLD spectrum and PDAC. Methods: A cross-sectional case-matched analytical and comparative study was carried out to analyze patients undergoing surgical resection of PDAC and compare them to a control group of individuals undergoing cholecystectomy at a public tertiary teaching hospital, matched by sex, age and BMI. Hepatic histopathological examinations were compared between cases and controls. Results: Of 56 individuals, 36 were male (64.3%) and the median age was 61.5 years old (interquartile range: 57.5 - 70). The participants' median BMI was 24.3 kg/m2 (interquartile range: 22.1-26.2 kg/m2). Microvesicular steatosis (p=0.04), hepatocellular ballooning (p=0.02), fibrosis (p=0.0003) and steatohepatitis (p=0.03) were significantly more frequent in the group of cases. Odds ratios for hepatocellular ballooning (6.2; 95%CI: 1.2-31.8; p=0.03), fibrosis (9.3; 95%CI: 2.5-34.1; p=0.0008) and steatohepatitis (3.9; 95%CI: 1.1-14.3; p=0.04) were statistically significant in relation to the PDAC prevalence. Conclusions: Significant associations were identified between histopathological aspects of NAFLD (microvesicular steatosis, hepatocellular ballooning, fibrosis, and steatohepatitis) and PDAC.


RESUMO Histórico e objetivos: a associação entre a doença hepática gordurosa não alcoólica (DHGNA) e o adenocarcinoma ductal pancreático (ACDP) foi sugerida anteriormente. Este estudo visa investigar esta associação e identificar possíveis ligações entre as variáveis do espectro da DHGNA e o ACDP. Métodos: foi realizado estudo transversal caso-controle analítico e comparativo para analisar pacientes submetidos a ressecção cirúrgica de ACDP e compará-los a grupo controle de indivíduos submetidos a colecistectomia em hospital público terciário de ensino, pareados por sexo, idade e IMC. Os exames histopatológicos hepáticos foram comparados entre casos e controles. Resultados: dos 56 indivíduos, 36 eram do sexo masculino (64,3%) e a idade mediana era de 61,5 anos de idade (intervalo interquartil 57,5-70). A mediana do IMC dos participantes foi de 24,3 kg/m2 (intervalo interquartil 22,1 26,2). Esteatose microvesicular (p = 0,04), balonização hepatocelular (p = 0,02), fibrose (p = 0,0003) e esteato-hepatite (p = 0,03) foram significativamente mais frequentes no grupo de casos. As razões de chances para balonização hepatocelular (6,2; IC 95%: 1,2 - 31,8; p = 0,03), fibrose (9,3; IC 95%: 2,5 - 34,1; p = 0,0008) e esteato-hepatite (3,9; IC 95%: 1,1 - 14,3; p = 0,04) foram estatisticamente significativas em relação à prevalência de ACDP. Conclusões: houve associações significativas entre aspectos histopatológicos de DHGNA (esteatose microvesicular, balonização hepatocelular, fibrose e esteato-hepatite) e a ocorrência de ACDP.


Subject(s)
Humans , Male , Pancreatic Neoplasms/epidemiology , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/pathology , Non-alcoholic Fatty Liver Disease/epidemiology , Biopsy , Cross-Sectional Studies , Liver , Liver Cirrhosis/pathology , Middle Aged
9.
Clinics ; 75: e1670, 2020. tab, graf
Article in English | LILACS | ID: biblio-1133460

ABSTRACT

OBJECTIVES: Acoustic radiation force impulse (ARFI) elastography, the aspartate aminotransferase-to-alanine aminotransferase ratio (AAR), aspartate aminotransferase-to-platelet ratio index (APRI), and the fibrosis-4 (FIB-4) index are widely used to assess liver fibrosis. However, efficacies of these methods in the evaluation of hepatic functional reserve remain unclear. In this study, we investigated the relationship between ARFI elastography combined with either AAR, APRI, or FIB-4 index and Child-Pugh (CP) class for the evaluation of hepatic functional reserve in patients with chronic hepatitis B (CHB)-related cirrhosis. METHODS: The shear wave velocities of 104 patients with clinically confirmed CHB-related cirrhosis were determined using the ARFI; and clinical serum markers (e.g. ALT, AST, PLT) were used to calculate the AAR, APRI, and FIB-4 index. Cirrhosis patients were scored according to their CP class. The ARFI, AAR, APRI, and FIB-4 index were compared with the CP class. The efficacy of each indicator in diagnosis was analyzed using the receiver operating characteristic (ROC) curve and the ARFI combined with either the AAR, APRI, or FIB-4 index, which is used to predict decompensated cirrhosis. RESULTS: No significant differences were observed in gender and age among CP classes A, B, and C patients (p>0.05). The ARFI values and the AAR, APRI, and FIB-4 index of patients with CP classes A, B, and C were significantly different (p<0.05). With an increasing CP class, the ARFI, AAR, APRI, and FIB-4 values increased. The correlation between the ARFI and the CP class was stronger than that between the AAR, APRI, and FIB-4 index and the CP class. The area under the ROC curve for the diagnosis of decompensated cirrhosis using the ARFI was 0.841, which was higher than that for the AAR, APRI, and FIB-4 index. According to the area under the curve results, no significant differences were found when the ARFI was combined with either the AAR, APRI, or FIB-4 index and when the ARFI alone was used. CONCLUSIONS: The ARFI value has a strong correlation with the CP class. Therefore, ARFI elastography complements CP class in the assessment of the hepatic functional reserve in patients with CHB-related cirrhosis.


Subject(s)
Humans , Male , Female , Child , Aspartate Aminotransferases/blood , Acoustics , Alanine Transaminase/blood , Elasticity Imaging Techniques/methods , Liver Cirrhosis/pathology , Biopsy , Severity of Illness Index , Biomarkers/blood , Predictive Value of Tests , ROC Curve , Sensitivity and Specificity , Liver/pathology , Liver Cirrhosis/blood , Liver Cirrhosis/diagnostic imaging
10.
J. bras. nefrol ; 41(4): 570-574, Out.-Dec. 2019. graf
Article in English | LILACS | ID: biblio-1056613

ABSTRACT

Abstract The occurrence of ascites after Renal Transplant (RT) is infrequent, and may be a consequence of surgical or medical complications. Case report: 61 year-old, male, history of arterial hypertension, tongue carcinoma and alcoholic habits 12-20g/day. He had chronic kidney disease secondary to autosomal dominant polycystic kidney disease, without hepatic polycystic disease. He underwent cadaver donor RT in September 2017. He had delayed graft function by surgically corrected renal artery stenosis. He was admitted in January 2018 for ascites de novo, with no response to diuretics. HE had visible abdominal collateral circulation. Graft dysfunction, adequate tacrolinemia, Innocent urinary sediment, mild anemia, without thrombocytopenia. Serum albumin 4.0g / dL. Normal hepatic biochemistry. Peritoneal fluid with transudate characteristics and serum albumin gradient > 1.1. Ultrasound showed hepatomegaly, permeable vascular axes, without splenomegaly. Mycophenolate mofetil was suspended, with reduced remaining immunosuppression. He maintained refractory ascites: excluded infectious, metabolic, autoimmune and neoplastic etiologies. No nephrotic proteinuria and no heart failure. MRI: micronodules compatible with bile cysts. Upper Digestive Tract Endoscopy did not show gastroesophageal varicose veins. Normal abdominal lymphoscintigraphy. He underwent exploratory laparoscopy with liver biopsy: incomplete septal cirrhosis of probable vascular etiology some dilated bile ducts. He maintained progressive RT dysfunction and restarted hemodialysis. The proposed direct measurement of portal pressure was delayed by ascites resolution. There was further recovery of the graft function. Discussion: Incomplete septal cirrhosis is an uncommon cause of non-cirrhotic portal hypertension. Its definition is not well known, morphological and pathophysiological. We have not found published cases of post-RT ascites secondary to this pathology, described as possibly associated with drugs, immune alterations, infections, hypercoagulability and genetic predisposition.


Resumo A ocorrência de ascite no pós-Transplante Renal (TR) é infrequente, podendo ser consequência de complicações cirúrgicas ou médicas. Caso clínico: 61 anos, masculino, antecedentes de hipertensão arterial, carcinoma da língua e hábitos alcoólicos 12-20g/dia. Doença renal crônica secundária à doença renal poliquística autossômica dominante, sem poliquistose hepática. Submetido a TR de doador cadáver em setembro de 2017. Atraso na função de enxerto por estenose da artéria renal, corrigida cirurgicamente. Internado em janeiro de 2018 por ascite de novo, sem resposta a diuréticos. Circulação colateral abdominal visível. Disfunção do enxerto, tacrolinemia adequada. Sedimento urinário inocente. Anemia ligeira, sem trombocitopenia. Albumina sérica 4,0g/dL. Bioquímica hepática normal. Líquido peritoneal com características de transudado e gradiente sero-ascítico de albumina > 1,1. Ecografia com hepatomegalia, eixos vasculares permeáveis, sem esplenomegalia. Suspendeu micofenolato mofetil, reduziu restante imunossupressão. Manteve ascite refratária: excluídas etiologias infecciosas, metabólicas, autoimunes e neoplásicas. Sem proteinúria nefrótica e sem insuficiência cardíaca. RM: micronódulos compatíveis com quistos biliares. EDA sem varizes gastroesofágicas. Linfocintigrafia abdominal normal. Submetido a laparoscopia exploradora com biópsia hepática: cirrose septal incompleta de provável etiologia vascular, alguns ductos biliares dilatados. Manteve disfunção progressiva do TR, reiniciou hemodiálise. Proposta medição direta da pressão portal, protelada por resolução da ascite. Recuperação posterior da função de enxerto. Discussão: A cirrose septal incompleta é uma causa incomum de hipertensão portal não cirrótica. A sua definição é morfológica e a fisiopatologia, pouco conhecida. Não encontramos publicados casos de ascite pós-TR secundária a esta patologia, descrita como possivelmente associada a fármacos, alterações imunitárias, infecções, hipercoagulabilidade e predisposição genética.


Subject(s)
Humans , Male , Middle Aged , Ascites/etiology , Kidney Transplantation/adverse effects , Renal Insufficiency, Chronic/surgery , Liver Cirrhosis/pathology , Ascites/diagnosis , Renal Dialysis/standards , Polycystic Kidney, Autosomal Dominant/complications , Delayed Graft Function/complications , Hypertension, Portal/etiology , Liver Cirrhosis/complications
11.
Arq. gastroenterol ; 56(3): 256-260, July-Sept. 2019. tab
Article in English | LILACS | ID: biblio-1038712

ABSTRACT

ABSTRACT BACKGROUND: Non-alcoholic fatty liver disease has been progressively diagnosed in the general population as a consequence of the increased prevalence of obesity and type 2 diabetes mellitus, its main risk factors. It is characterized by accumulation of fat in the hepatocytes associated with lobular inflammation and balonization, which can lead to cirrhosis and hepatocarcinoma. Thus, a characterization and follow-up of a progression of the fibrosis level of these patients becomes important, being that the transient hepatic elastography is a reliable method for this evaluation with a measure of the kapa index. OBJECTIVE: To evaluate the progression of hepatic fibrosis through elastography in patients with non-alcoholic fatty liver disease. METHODS: Patients who had previously performed hepatic biopsy and noninvasive scores for non-alcoholic steatohepatitis (NASH) and fibrosis were included in the study. These same subjects were then submitted to current clinical evaluation, laboratory and liver elastography tests, defining the level of liver fibrosis, about 10 years after the first evaluation. RESULTS: Data were analyzed for 66 patients previously submitted to liver biopsy. Of these, 16 were not found, four could not participate because they were debilitated due to hepatic cirrhosis, two had died from an automobile accident and five from complications of cirrhosis of the liver. Therefore, of the 50 patients with a known history, 9 (18%) had died of cirrhosis or were unable to attend the examination because of their liver disease. The remaining population was predominantly female (61.5%), mean age of 63 years, being overweight, dyslipidemia (76.9%), disorders of the glycemic profile (76.9%), and metabolic syndrome (82.1%). Of the 39 cases evaluated, 35% had the same degree of fibrosis at the initial evaluation (biopsy) and at the current evaluation (elastography), 33% had an increase in the degree of fibrosis and another 30% had a decrease in the degree of fibrosis. Twenty-eight patients had NASH at baseline. Regarding these patients, it was observed in the current evaluation, that 25% remained stable in the degree of fibrosis, 39% progressed, and 35% regressed. CONCLUSION: Despite some limitations of our study, such as the small number of patients, and the use of two different methods of evaluation (biopsy and elastography), the data obtained allow us to conclude that of the 39 evaluated cases, 33% (13) presented progression of fibrosis and the total group of 50 patients, 42% had cirrhosis or died due to liver disease. The presence of NASH on hepatic biopsy did not prove to be, in our study, a predictive of the evolution of hepatic fibrosis in the patients.


RESUMO CONTEXTO: A doença hepática gordurosa não alcoólica vem sendo diagnosticada com frequência progressivamente maior na população geral, como consequência do aumento da prevalência da obesidade e do diabetes mellitus tipo 2, considerados seus principais fatores de risco. Caracteriza-se por acúmulo de gordura nos hepatócitos associada à inflamação lobular e balonização, podendo levar à cirrose e hepatocarcinoma. Desta forma, torna-se importante a caracterização e acompanhamento do nível de fibrose hepática destes pacientes, sendo que a elastografia hepática transitória, tem se mostrado um método confiável para esta avaliação com a medida do índice kapa. OBJETIVO: Avaliar a progressão da fibrose hepática através de elastografia em pacientes com doença hepática gordurosa não alcoólica. MÉTODOS: Foram incluídos no estudo pacientes que haviam realizado anteriormente biópsia hepática e cálculo de escores não invasivos para avaliação de esteato-hepatite não alcoólica (EHNA) e fibrose. Estes mesmos indivíduos foram então submetidos à avaliação clínica, laboratorial e exame de elastografia hepática atuais, definindo o nível de fibrose hepática, cerca de 10 anos após a primeira avaliação. RESULTADOS: Foram analisados dados relativos a 66 pacientes previamente submetidos a biópsia hepática. Destes, 16 não foram localizados, quatro não puderam participar por estarem incapacitados em função de cirrose hepática, dois haviam falecido por acidente automobilístico e cinco, por complicações de cirrose hepática. Portanto, do grupo de 50 pacientes com evolução conhecida, nove (18%) haviam falecido por cirrose ou estavam incapacitados de comparecer ao exame em função de sua doença hepática. A população restante era predominantemente do sexo feminino (61,5%), com idade média de 63 anos, apresentando sobrepeso, dislipidemia (76,9%), distúrbios do metabolismo glicêmico (76,9%) e síndrome metabólica (82,1%). Dos 39 casos avaliados, 35% tiveram o mesmo grau de fibrose na avaliação inicial (biópsia) e na avaliação atual (elastografia), 33% tiveram aumento no grau de fibrose e outros 30% tiveram diminuição no grau de fibrose. Vinte e oito pacientes apresentavam EHNA na avaliação inicial. Em relação a esses pacientes observou-se na avaliação atual que, 25% mantiveram-se estáveis no grau de fibrose, 39% progrediram e, 35% regrediram. CONCLUSÃO: Apesar de algumas limitações do nosso estudo, como o pequeno número de pacientes e o uso de dois métodos diferentes de avaliação (biópsia e elastografia), os dados obtidos nos permitem concluir que dos 39 casos avaliados, 33% apresentaram progressão da fibrose e do grupo total de 50 pacientes, 42% apresentam cirrose ou faleceram em decorrência de doença hepática. A presença de EHNA à biópsia hepática não se mostrou um dado capaz, no nosso estudo, de predizer a evolução da fibrose hepática nos pacientes.


Subject(s)
Humans , Male , Female , Middle Aged , Non-alcoholic Fatty Liver Disease/diagnostic imaging , Liver Cirrhosis/diagnostic imaging , Biopsy , Risk Factors , Follow-Up Studies , Disease Progression , Elasticity Imaging Techniques , Non-alcoholic Fatty Liver Disease/pathology , Liver/pathology , Liver Cirrhosis/pathology , Middle Aged
12.
J. bras. nefrol ; 41(2): 300-303, Apr.-June 2019. graf
Article in English | LILACS | ID: biblio-1012547

ABSTRACT

ABSTRACT A 16-year-old female patient previously diagnosed with autosomal recessive polycystic kidney disease (ARPKD) presented with acute bilateral pneumonia, upper gastrointestinal bleeding caused by ruptured esophageal varices, ascites, and lower limb edema. She required intensive care and an endoscopic procedure to treat the gastrointestinal bleeding. The analysis of the differential diagnosis for chronic liver disease indicated she had a spontaneous splenorenal shunt. Ultrasound-guided biopsy revealed the patient had cirrhosis, as characteristically seen in individuals with ARPKD. She had no symptoms at discharge and was referred for review for a combined transplant.


RESUMO Relato de caso de uma paciente adolescente de 16 anos de idade com diagnóstico prévio de doença renal policística autossômica recessiva (DRPAR), que apresentou quadro agudo de pneumonia bilateral e hemorragia digestiva alta por ruptura de varizes esofágicas, bem como ascite e edema de membros inferiores. Necessitou de estabilização clínica intensiva e tratamento endoscópico do sangramento digestivo. Após investigação dos diagnósticos diferenciais da hepatopatia crônica, diagnosticou-se shunt esplenorrenal espontâneo, e realizou-se biópsia hepática guiada por ecografia com diagnóstico de cirrose, espectro típico da DRPAR. Recebeu alta hospitalar assintomática e foi encaminhada para avaliação de transplante duplo.


Subject(s)
Humans , Female , Adolescent , Arteriovenous Anastomosis/pathology , Polycystic Kidney, Autosomal Recessive/complications , Caroli Disease/complications , Liver Cirrhosis/complications , Arteriovenous Anastomosis/diagnostic imaging , Referral and Consultation , Renal Veins/diagnostic imaging , Biopsy , Brazil , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Intensive Care Units, Pediatric , Treatment Outcome , Polycystic Kidney, Autosomal Recessive/drug therapy , Polycystic Kidney, Autosomal Recessive/diagnostic imaging , Caroli Disease/pathology , Caroli Disease/drug therapy , Magnetic Resonance Angiography , Adrenergic beta-Agonists/therapeutic use , Diuretics, Potassium Sparing/therapeutic use , Liver Cirrhosis/pathology , Liver Cirrhosis/drug therapy
13.
Acta cir. bras ; 34(5): e201900504, 2019. tab, graf
Article in English | LILACS | ID: biblio-1010871

ABSTRACT

Abstract Purpose: To establish a new rat model, the pathogenesis of which is closer to the clinical occurrence of chronic obstructive jaundice with liver fibrosis. Methods: 90 SD rats were randomly divided into 3 groups. Group A common bile duct ligation, group B common bile duct injection compont and group C injection saline. The serum of three groups was extracted, and the liver function was detected by ELISA. HE staining, Masson staining and immunohistochemistry were used to detect liver pathology. Results: Group B showed a fluctuant development of jaundice, obstructive degree reached a peak at 2 weeks, and decreased from 3 weeks. HA, LA and PCIII were significantly higher than control group. 3 weeks after surgery, liver tissue fibrosis occurred in group B, and a wide range of fiber spacing was formed at 5 weeks. Immunohistochemistry showed that hepatic stellate cells were more active than the control group. Conclusion: Intra-biliary injection of Compont gel is different from the classic obstructive jaundice animal model caused by classic bile duct ligation, which can provide an ideal rat model of chronic obstructive jaundice with liver fibrosis.


Subject(s)
Animals , Female , Bile Ducts/drug effects , Disease Models, Animal , Gels/administration & dosage , Liver Cirrhosis/chemically induced , Aspartate Aminotransferases/blood , Reference Values , Azo Compounds , Time Factors , Bile Ducts/pathology , Bilirubin/analysis , Serum Albumin/analysis , Enzyme-Linked Immunosorbent Assay , Immunohistochemistry , Random Allocation , Reproducibility of Results , Rats, Sprague-Dawley , Eosine Yellowish-(YS) , Jaundice, Obstructive/chemically induced , Jaundice, Obstructive/pathology , Alkaline Phosphatase/blood , gamma-Glutamyltransferase/blood , Injections , Liver Cirrhosis/pathology , Methyl Green
14.
Arq. gastroenterol ; 55(3): 247-251, July-Sept. 2018. tab, graf
Article in English | LILACS | ID: biblio-973894

ABSTRACT

ABSTRACT BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is the commonest hepatopathy worldwide. OBJECTIVE: To investigate the correlations between NAFLD histopathological features and the levels of adipokines (adiponectin, leptin, and resistin) and circulating inflammatory markers (interleukin-6 [IL-6], interleukin-8 [IL-8], tumor necrosis factor alpha [TNF-α], and C-reactive protein [CRP]). METHODS: This is an exploratory cross-sectional study, which enrolled 19 women with obesity who underwent bariatric surgery. Biochemical characteristics evaluated included the levels of adiponectin, leptin, resistin, IL-6, IL-8, TNF-α, and CRP. NAFLD was assessed through histological examination of liver biopsies carried out during the surgical procedures. RESULTS: The mean age of the study group was 37.3±8.2 years old; mean BMI was 36.2±2.5 kg/m2. Among individuals with liver fibrosis, the levels of IL-8 were significantly higher (24.4 ± 9.7 versus 12.7 ± 6.6; P=0.016726). The intensity of fibrosis presented a significant negative correlation with the levels of adiponectin (R= -0.49379; P=0.03166); i.e. the higher the levels of adiponectin, the lower the intensity of fibrosis. The intensity of steatohepatitis presented a significant negative correlation with the levels of adiponectin (R= -0.562321; P=0.01221); this means that the higher the levels of adiponectin, the lower the intensity of steatohepatitis. CONCLUSION: Adiponectin levels were inversely correlated with the severity of fibrosis and steatohepatitis, whereas IL-8 levels were higher in individuals with liver fibrosis among individuals with obesity and NAFLD undergoing bariatric surgery. The use of these markers to assess NAFLD may bring significant information within similar populations.


RESUMO CONTEXTO: A doença hepática gordurosa não-alcoólica (DHGNA) é a hepatopatia mais comum no mundo. OBJETIVO: Investigar correlações entre as apresentações histopatológicas da DHGNA e os níveis de adipocinas (adiponectina, leptina e resistina) e marcadores sistêmicos de inflamação (interleucina-6 [IL-6], interleucina-8 [IL-8], fator de necrose tumoral alfa [TNF-α] e proteína C reativa [PCR]). MÉTODOS: Estudo transversal exploratório envolvendo 18 mulheres com obesidade submetidas à cirurgia bariátrica. As características bioquímicas avaliadas incluíram os níveis de adiponectina, leptina, resistina, IL-6, IL-8, TNF-α e PCR. A DHGNA foi avaliada através de exams histológicos de biópsias hepáticas realizadas durantes as cirurgias. RESULTADOS: A idade média foi 37,3±8,2 anos; o índice de massa corporal (IMC) médio foi 36,2±2,5 kg/m2. Entre os indivíduos com fibrose hepática, os níveis de IL-8 foram significativamente mais altos (24,4±9,7 versus 12,7±6,6; P=0,016726). A intensidade da fibrose apresentou uma correlação negativa significativa com os níveis de adiponectina (R= -0,49379; P=0,03166), demonstranso que, quanto maiores os níveis de adiponectina, menor a intensidade da fibrose. A intensidade da esteato-hepatite apresentou uma correlação negativa significativa com os níveis de adiponectina (R= -0,562321; P=0,01221), demonstrando que quanto mais altos os níveis de adiponectina, menor a intensidade da esteato-hepatite. CONCLUSÃO: Os níveis de adiponectina correlacionaram-se negativamente com a severidade da fibrose e da esteato-hepatite, enquanto os níveis de IL-8 foram maiores entre os indivíduos com fibrose hepática. O uso destes marcadores pode trazer informações significativas sobre a DHGNA em populações com obesidade.


Subject(s)
Humans , Female , Adult , Obesity, Morbid/blood , Cytokines/blood , Adipokines/blood , Non-alcoholic Fatty Liver Disease/pathology , Non-alcoholic Fatty Liver Disease/blood , Reference Values , Biopsy , Severity of Illness Index , Obesity, Morbid/surgery , Body Mass Index , Cross-Sectional Studies , Statistics, Nonparametric , Bariatric Surgery , Liver Cirrhosis/pathology , Liver Cirrhosis/blood , Middle Aged
15.
Rev. Assoc. Med. Bras. (1992) ; 64(9): 791-798, Sept. 2018. graf
Article in English | LILACS | ID: biblio-976857

ABSTRACT

SUMMARY OBJECTIVE To study factors affecting the liver regeneration after hepatectomy METHODS With 3D reconstitution technology, liver regeneration ability of 117 patients was analysed, and relative factors were studied. RESULTS There was no statistically difference between the volume of simulated liver resection and the actual liver resection. All livers had different degrees of regeneration after surgery. Age, gender and blood indicators had no impact on liver regeneration, while surgery time, intraoperative blood loss, blood flow blocking time and different ways of liver resection had a significant impact on liver regeneration; In addition, the patients' own pathological status, including, hepatitis and liver fibrosis all had a significant impact on liver regeneration. CONCLUSION 3D reconstitution model is a good model to calculate liver volume. Age, gender, blood indicators and biochemistry indicators have no impact on liver regeneration, but surgery indicators and patients' own pathological status have influence on liver regeneration.


RESUMO OBJETIVO Estudar os fatores que afetam a regeneração hepática após hepatectomia. MÉTODOS A capacidade de regeneração hepática de 117 pacientes foi analisada com a tecnologia de reconstituição 3D e foram estudados os fatores relacionados. RESULTADOS Não houve diferença estatística significante entre o volume de ressecção hepática simulada e a ressecção atual. Todos os fígados apresentaram diferentes graus de regeneração após cirurgia. Idade, gênero e indicadores sanguíneos não tiveram impacto na regeneração hepática, enquanto que tempo de cirurgia, perda sanguínea intraoperatória, tempo de bloqueio do fluxo sanguíneo e diferentes formas de ressecção mostraram impacto significante na regeneração do órgão. Além disso, condições patológicas dos pacientes, incluindo hepatite e fibrose hepática, tiveram impacto significante na regeneração hepática. CONCLUSÃO O modelo de reconstituição 3D é um bom modelo para calcular o volume do fígado. Idade, gênero, indicadores sanguíneos e bioquímicos não tiveram impacto na regeneração hepática, mas indicadores operatórios e condição patológica dos pacientes mostraram influência na regeneração do órgão.


Subject(s)
Humans , Male , Female , Adult , Aged , Aged, 80 and over , Carcinoma, Hepatocellular/surgery , Hepatectomy/rehabilitation , Liver Neoplasms/surgery , Liver Regeneration/physiology , Organ Size , Risk Factors , Analysis of Variance , Blood Loss, Surgical , Treatment Outcome , Carcinoma, Hepatocellular/pathology , Carcinoma, Hepatocellular/rehabilitation , Imaging, Three-Dimensional , Tumor Burden , Operative Time , Hepatitis/pathology , Liver Cirrhosis/pathology , Liver Neoplasms/pathology , Liver Neoplasms/rehabilitation , Middle Aged , Models, Anatomic
16.
Braz. j. infect. dis ; 22(4): 352-354, July-Aug. 2018. tab, graf
Article in English | LILACS | ID: biblio-1039217

ABSTRACT

ABSTRACT Schistosomiasis affects approximately 207 million people in 76 countries. The association between hepatocellular carcinoma and Schistosoma mansoni infection has been investigated. Studies using animal models suggest that the parasite may accelerate the oncogenic process when combined with other factors, such as hepatitis C virus infection or exposure to a carcinogen. Herein, we report a case series of six hepatocellular carcinoma patients from Northeast Brazil, with negative serology for both hepatitis B and C virus, submitted to liver transplantation, whose explant showed evidence of schistosomal liver fibrosis. Since all patients enrolled in this study were submitted to liver transplantation, we were able to access the whole explanted liver and perform histopathological analysis, which is often not possible in other situations. Although 50% of them showed signs of liver failure, no cirrhosis or any liver disease other than schistosomal fibrosis had been detected. These uncommon findings suggest that Schistosoma mansoni infection might predispose to hepatocellular carcinoma development, regardless of the absence of other risk factors.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Schistosomiasis mansoni/surgery , Liver Transplantation , Carcinoma, Hepatocellular/surgery , Liver Neoplasms/surgery , Schistosomiasis mansoni/complications , Schistosomiasis mansoni/epidemiology , Brazil/epidemiology , Risk Factors , Sex Distribution , Carcinoma, Hepatocellular/parasitology , Carcinoma, Hepatocellular/pathology , Liver/parasitology , Liver Cirrhosis/parasitology , Liver Cirrhosis/pathology , Liver Neoplasms/parasitology , Liver Neoplasms/pathology
17.
Arq. gastroenterol ; 55(1): 2-6, Apr.-Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-1038705

ABSTRACT

ABSTRACT BACKGROUND: Fibrosis are common structural hepatic change in patients with chronic hepatitis. Liver biopsy is the gold standard for determining the extent of liver fibrosis. Considering the technical difficulties and cost, improvements in non-invasive screening tools are greatly needed. Bioimpedance have been shown to be safe to evaluate tissue fibrosis. OBJECTIVE: To assess the utility of using monofrequential bipolar bioimpedance for the detection of severity of liver fibrosis consistent with chronic viral hepatitis C infections. METHODS: One hundred and ten patients were studied prospectively and formed two groups according to the lab tests results for the detection of HCV, ALT and AST: Group 1 Control (n=50 healthy patients with HCV negative and with ALT and AST values within the normal clinical range) and Group 2 Positive (n=60 patients positive for anti-HCV positive) which were biopsied. All patients underwent an examination with an Electro Sensor Complex, bioimpedance technology. To compare the groups 1 and 2, the ROC curves was used to determine the specificity and sensitivity of the bioimpedance to detect liver fibrosis. To identify liver fibrosis severity the Group 2 Positive was subdivided according to the liver biopsy results (Metavir fibrosis score) into: Sub Group 2A (F0-F1 n=25) - patients without or with minimal portal fibrosis and Sub Group 2B (F3-F4 n=20) patients with numerous septa/cirrhosis. A statistical analysis was conducted to analyze the bioimpedance data differences in delta of the conductance. RESULTS: From the comparison between Groups 1 and 2: 1) The delta value for conductance in the pathway representing the right foot-left hand minus left hand-right foot demonstrated a sensitivity of 85% and a specificity of 78% with a cutoff value ≤5 and P=0.0001. 2) For the comparison between Sub Group 2A (Metavir F0+F1) and Sub Group 2B (Metavir F3+F4), the neural network for the Electro Sensor Complex data demonstrated a sensitivity of 85% and a specificity of 72% with a cutoff probability >50% and P=0.001. AUCROC=0.81. CONCLUSION: Bioimpedance technology had good level sensitivity and acceptable specificity for detecting liver fibrosis using delta of the conductance. There is a potential for the use of bioimpedance technology as non-invasive approaches for screening of liver fibrosis.


RESUMO CONTEXTO: A fibrose é uma alteração hepática estrutural comum em pacientes com hepatite crônica. A biópsia hepática é o padrão ouro para determinar a extensão da fibrose hepática. Considerando as dificuldades técnicas e os custos, melhorias em ferramentas de rastreio não-invasivas são bastante necessárias. A tecnologia bioimpedância tem se mostrado ser segura para avaliar fibrose tecidual. OBJETIVO: Avaliar a utilidade do uso da bioimpedância bipolar para detectar a severidade da fibrose hepática compatível com a hepatite viral B e C. MÉTODOS: Cento e dez pacientes foram estudados, prospectivamente e dois grupos foram formados de acordo com os resultados dos testes laboratoriais para a detecção de HCV, ALT e AST: Grupo 1 Controle (n=50 pacientes saudáveis com HCV negativos e com valores de ALT e AST dentro do padrão de normalidade) e Grupo 2 Positivo (n=60 pacientes positivos para a infecção viral anti-VHC ou HBsAg positiva) que foram biopsiados. Todos os pacientes foram submetidos a um exame com o Electro Sensor Complex, que utiliza a bioimpedância bipolar. Para comparar os Grupos 1 e 2, a curva ROC foi utilizada para determinar a especificidade e sensibilidade da bioimpedância em detectar a fibrose hepática. Para identificar a severidade da fibrose hepática, o Grupo 2 Positivo foi subdividido de acordo com os resultados da biópsia (escore Metavir) em: Sub Grupo 2A (F0-F1 n=25 ) - pacientes sem ou com fibrose portal mínima e Sub Grupo 2B (F3-F4 n=20) pacientes com numerosos septos/cirrose. A análise estatística foi realizada para analisar as diferenças dos valores delta de condutância da bioimpedância. RESULTADOS: A comparação entre os Grupos 1 e 2 mostrou: 1) O valor delta de condutância na via do pé direito à mão esquerda menos o valor do delta da mão esquerda ao pé direito demonstrou uma sensibilidade de 85% e uma especificidade de 78%, com um valor de corte ≤5 e P=0,0001. 2). Na comparação entre o Sub Grupo 2A (Metavir F0+F1) e o Sub Grupo 2B (Metavir F3 + F4), a rede neural para os dados aferidos pelo Electro Sensor Complex demonstrou uma sensibilidade de 85% e uma especificidade de 72%, com um corte de probabilidade >50% P=0,001 e AUCROC=0,81. CONCLUSÃO: Bioimpedância apresentou boa sensibilidade e aceitável especificidade para a detecção da fibrose hepática utilizando o delta da condutância da bioimpedância. Existe um potencial para o uso da bioimpedância como abordagens não-invasivas para o rastreamento da fibrose hepática.


Subject(s)
Humans , Male , Female , Adult , Electric Impedance , Hepatitis C, Chronic/complications , Liver Cirrhosis/diagnosis , Biopsy , Severity of Illness Index , Case-Control Studies , Pilot Projects , Mass Screening , Prospective Studies , ROC Curve , Sensitivity and Specificity , Hepatitis C, Chronic/pathology , Liver/pathology , Liver Cirrhosis/etiology , Liver Cirrhosis/pathology , Middle Aged
18.
Rev. Assoc. Med. Bras. (1992) ; 64(3): 224-229, Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-896445

ABSTRACT

Summary Objective: Chronic hepatitis C (CHC) continues to be a critical problem. The liver fibrosis score is the most valuable tool in determining treatment and prognosis. Liver biopsy is still considered a gold method but, due to unmet needs, new non-invasive markers are required. The aim of this study was to investigate any possible relationship between serum angiotensin-converting enzyme (ACE) levels and the stages of liver fibrosis in patients with CHC. Method: A total 100 CHC and 100 healthy subjects were enrolled in this study. The relationship between serum ACE level and the stages liver fibrosis was investigated using three different formats, as follows: (group [G]-I, classic Ishak's Score from F1 to F6; G-II, mild [F1-2], moderate [F3-4] and severe [F5-6]; G-III, mild [≤ F2] and advanced [F > 2]). The clinical usability of serum ACE level for both groups was also investigated. Results: Median serum ACE levels were higher in the healthy group than in CHC (42.5 [7-119] vs. 36 [7-91] U/I, p=0.002). There was no statistical difference among the three different fibrosis groups (G-I, G-II, G-III, p=0.797, p=0.986, and p=0.874) and no correlation between serum ACE level and the stages of liver fibrosis (r=0.026, p=0.923). The usability of serum ACE for evaluated patients with CHC and healthy subjects were calculated as 47% and 64%, respectively. Conclusion: Our study indicated that there is no relationship or correlation between serum ACE levels and stages of liver fibrosis in patients with CHC. The assessment of serum ACE level using genetically corrected reference values may provide more accurate results.


Subject(s)
Humans , Male , Female , Adult , Aged , Peptidyl-Dipeptidase A/blood , Hepatitis C, Chronic/blood , Liver Cirrhosis/diagnosis , Polymorphism, Genetic/genetics , Severity of Illness Index , Biomarkers/blood , Case-Control Studies , Liver Cirrhosis/pathology , Middle Aged
19.
Clinics ; 72(9): 516-525, Sept. 2017. tab, graf
Article in English | LILACS | ID: biblio-890735

ABSTRACT

OBJECTIVES: Although liver biopsy is the gold standard for determining the degree of liver fibrosis, issues regarding its invasiveness and the small amount of liver tissue evaluated can limit its applicability and interpretation in clinical practice. Non-invasive evaluation methods for liver fibrosis can address some of these limitations. The aim of this study was to evaluate the accuracy of transient elastography-FibroScan®, acoustic radiation force impulse (ARFI), enhanced liver fibrosis (ELF), the aspartate aminotransferase-to-platelet ratio index (APRI), and the FIB-4 index compared with liver biopsy in hepatitis C. METHODS: We evaluated chronic hepatitis C patients who were followed at the Division of Clinical Gastroenterology and Hepatology, Hospital das Clínicas, Department of Gastroenterology of University of São Paulo School of Medicine, São Paulo, Brazil, and who underwent liver biopsy. The accuracy of each method was determined by a receiver operating characteristic (ROC) curve analysis, and fibrosis was classified as significant fibrosis (≥F2), advanced fibrosis (≥F3), or cirrhosis (F4). The Obuchowski method was also used to determine the diagnostic accuracy of each method at the various stages of fibrosis. In total, 107 FibroScan®, 51 ARFI, 68 ELF, 106 APRI, and 106 FIB-4 analyses were performed. RESULTS: A total of 107 patients were included in the study. The areas under the ROC curve (AUROCs) according to fibrosis degree were as follows: significant fibrosis (≥F2): FibroScan®: 0.83, FIB-4: 0.76, ELF: 0.70, APRI: 0.69, and ARFI: 0.67; advanced fibrosis (≥F3): FibroScan®: 0.85, ELF: 0.82, FIB-4: 0.77, ARFI: 0.74, and APRI: 0.71; and cirrhosis (F4): APRI: 1, FIB-4: 1, FibroScan®: 0.99, ARFI: 0.96, and ELF: 0.94. The accuracies of transient elastography, ARFI, ELF, APRI and FIB-4 determined by the Obuchowski method were F0-F1: 0.81, 0.78, 0.44, 0.72 and 0.67, respectively; F1-F2: 0.73, 0.53, 0.62, 0.60, and 0.68, respectively; F2-F3: 0.70, 0.64, 0.77, 0.60, and 0.67, respectively; and F3-F4: 0.98, 0.96, 0.82, 1, and 1, respectively. CONCLUSION: Transient elastography remained the most effective method for evaluating all degrees of fibrosis. The accuracy of all methodologies was best at F4.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Hepatitis C, Chronic/diagnostic imaging , Liver Cirrhosis/diagnostic imaging , Analysis of Variance , Aspartate Aminotransferases/blood , Biopsy , Elasticity Imaging Techniques/methods , Hepatitis C, Chronic/blood , Hepatitis C, Chronic/pathology , Liver Cirrhosis/blood , Liver Cirrhosis/pathology , Liver/diagnostic imaging , Liver/pathology , Platelet Count/methods , Prospective Studies , Reference Standards , Reference Values , Sensitivity and Specificity , Severity of Illness Index , Statistics, Nonparametric
20.
Arch. endocrinol. metab. (Online) ; 61(3): 276-281, May-June 2017. tab, graf
Article in English | LILACS | ID: biblio-887561

ABSTRACT

ABSTRACT Objective The objective of this study is to evaluate the performance of mathematical models used in non-invasive diagnosis of liver fibrosis in nonalcoholic fatty liver disease (NAFLD) patients to determine when the patient needs to be referred to a hepatologist. Subjects and methods Patients referred by endocrinologists to the liver outpatient departments in two hospitals in Curitiba, Brazil, over a 72-month period were analyzed. The results calculated using the APRI, FIB 4, FORNS and NAFLD Fibrosis Score non-invasive liver fibrosis assessment models were analyzed and compared with histological staging of this population. Results Sixty-seven patients with NAFLD were analyzed. Forty-two of them (62.68%) were female, mean age was 54.76 (±9.63) years, mean body mass index 31.42 (±5.64) and 59 (88.05%) of the 67 cases had glucose intolerance or diabetes. A diagnosis of steatohepatitis was made in 45 (76.27%) of the 59 biopsied patients, and advanced liver fibrosis (stages 3 and 4) was diagnosed in 18 (26.86%) of the 67 patients in the study population. The FIB 4 and NAFLD Fibrosis Score models had a high negative predictive value (93.48% and 93.61%, respectively) in patients with severe liver fibrosis (stages 3 and 4). Conclusion In conclusion, use of the FIB 4 and NAFLD Fibrosis Score models in NAFLD patients allows a diagnosis of severe liver disease to be excluded.


Subject(s)
Humans , Male , Female , Middle Aged , Referral and Consultation , Non-alcoholic Fatty Liver Disease/pathology , Endocrinologists , Gastroenterologists , Liver Cirrhosis/pathology , Aspartate Aminotransferases/blood , Reference Standards , Biopsy , Severity of Illness Index , Reproducibility of Results , Sensitivity and Specificity , Disease Progression , Alanine Transaminase/blood , Liver/pathology , Models, Theoretical
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