Browsing by Author "Stefano, Jose Tadeu"

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    Ability of a Combined FIB4/miRNA181a Score to Predict Significant Liver Fibrosis in NAFLD Patients
    (2021) Lima, Rodrigo Vieira Costa; Stefano, Jose Tadeu; Malta, Fernanda de Mello; Pinho, Joao Renato Rebello; Carrilho, Flair Jose; Arrese, Marco; Oliveira, Claudia P.
    Liver biopsy is the gold standard for assessing fibrosis, but there is a need to seek non-invasive biomarkers for this purpose. The aim of this study was to evaluate the correlation between the serum levels of the microRNAs miR-21, miR-29a, miR-122, miR-155 and miR-181a and the phenotypic expression of NAFLD. A cross-sectional study was carried out on 108 NAFLD patients diagnosed by liver biopsy. FIB-4 and NAFLD fibrosis scores were calculated. The comparison between the distributions of microRNA values according to the presence or absence of histological fibrosis (F2-F4) was performed. A multivariate logistic regression analysis was performed to build a score for predicting fibrosis using FIB-4 and Ln (miR-181a) as independent variables. Only miR-181a showed a statistical difference between patients with significant liver fibrosis (>F2) and those without (F0-F1) (p = 0.017). FIB-4 revealed an AUC on the ROC curve of 0.667 to predict clinically significant fibrosis (F2-F4). When assessed using the score in association with Ln (miR-181a), there was an improvement in the ROC curve, with an AUC of 0.71. miR-181a can be used as a non-invasive method of predicting fibrosis in NAFLD, and an association with FIB-4 has the potential to increase the accuracy of each method alone.
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    Diagnostic performance of three non-invasive fibrosis scores (Hepamet, FIB-4, NAFLD fibrosis score) in NAFLD patients from a mixed Latin American population
    (2020) Zambrano-Huailla, Rommel; Guedes, Laura; Stefano, Jose Tadeu; de Souza, Arthur A. Arrais; Marciano, Sebastian; Yvamoto, Erika; Michalczuk, Matheus Truccolo; Vanni, Denise Siqueira; Rodriguez, Hernan; Carrilho, Flair Jose; Alvares-da-Silva, Mario Reis; Gadano, Adrian; Arrese, Marco; Miranda, Adelina Lozano; Oliveira, Claudia P.
    Introduction and aims: Several non-invasive scoring systems have been developed and validated worldwide to predict the risk of liver fibrosis in nonalcoholic fatty liver disease (NAFLD). However, information about the performance of these systems in Latin American populations is scarce. Our aim was to evaluate the performance of the Hepamet Fibrosis Score, Fibrosis-4 (FIB-4) and the NAFLD Fibrosis Score (NFS) in a mixed Latin American group of NAFLD patients.