Browsing by Author "Diaz, Javier"

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    First Genetic Record of a Strap-Toothed Beaked Whale (Mesoplodon layardii) Stranding in Chile
    (2020) Espanol-Jimenez, Sonia; Abaud, Constanza; Aceituno, Camila; Alvarado-Rybak, Mario; Borroni, Cintya; Chiang, Gustavo; Diaz, Javier; Espejo, Winfred; Luisa Estay, Maria; Garcia-Cegarra, Ana M.; Gonzalez, Carlos; Gutierrez, Belen; Gutierrez, Josefina; Henriquez, Daniel; Hirmas, Andrea; Mejias, Pamela; Merino, Constanza; Molina, Charity; Naretto, Camilo; Olivares, Florencia; Pereira, Patricia; Penaloza, Diego; Pincheira, Betsy; Pinto, Nicolas; Rojas, Omar; Sanchez, Carolina; Toro, Barbara; Toro, Frederick; Undurraga, Raimundo
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    Latin American Association for the study of the liver (ALEH) practice guidance for the diagnosis and treatment of non-alcoholic fatty liver disease
    (2020) Pablo Arab, Juan; Dirchwolf, Melisa; Alvares-da-Silva, Mario Reis; Barrera, Francisco; Benitez, Carlos; Castellanos-Fernandez, Marlene; Castro-Narro, Graciela; Chavez-Tapia, Norberto; Chiodi, Daniela; Cotrim, Helma; Cusi, Kenneth; Marques Souza de Oliveira, Claudia Pinto; Diaz, Javier; Fassio, Eduardo; Gerona, Solange; Girala, Marcos; Hernandez, Nelia; Marciano, Sebastian; Masson, Walter; Mendez-Sanchez, Nahum; Leite, Nathalie; Lozano, Adelina; Padilla, Martin; Panduro, Arturo; Parana, Raymundo; Parise, Edison; Perez, Marlene; Poniachik, Jaime; Carlos Restrepo, Juan; Ruf, Andres; Silva, Marcelo; Tagle, Martin; Tapias, Monica; Torres, Kenia; Vilar-Gomez, Eduardo; Costa Gil, Jose Eduardo; Gadano, Adrian; Arrese, Marco
    Non-alcoholic fatty liver disease (NAFLD) currently represents an epidemic worldwide. NAFLD is the most frequently diagnosed chronic liver disease, affecting 20-30% of the general population. Furthermore, its prevalence is predicted to increase exponentially in the next decades, concomitantly with the global epidemic of obesity, type 2 diabetes mellitus (T2DM), and sedentary lifestyle. NAFLD is a clinical syndrome that encompasses a wide spectrum of associated diseases and hepatic complications such as hepatocellular carcinoma (HCC). Moreover, this disease is believed to become the main indication for liver transplantation in the near future. Since NAFLD management represents a growing challenge for primary care physicians, the Asociacion Latinoamericana para el Estudio del Higado (ALEH) has decided to organize this Practice Guidance for the Diagnosis and Treatment of Non-Alcoholic Fatty Liver Disease, written by Latin-American specialists in different clinical areas, and destined to general practitioners, internal medicine specialists, endocrinologists, diabetologists, gastroenterologists, and hepatologists. The main purpose of this document is to improve patient care and awareness of NAFLD. The information provided in this guidance may also be useful in assisting stakeholders in the decision-making process related to NAFLD. Since new evidence is constantly emerging on different aspects of the disease, updates to this guideline will be required in future. (C) 2020 Published by Elsevier Espana, S.L.U. on behalf of Fundacion Cilnica Medica Sur, A.C.
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    Response to ABVD chemotherapeutic protocol in patients with early stage Hodgkin's lymphoma
    (SOC MEDICA SANTIAGO, 2017) Diaz, Javier; Soto, Katherine; Ernst, Daniel
    Background: Recent trials show that > 90% of patients with early stage Hodgkin`s Lymphoma (ESHL) can be cured, especially when using the ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine) chemotherapeutic (CT) protocol. The use of radiotherapy (RT) is variable and can be selected according to the presence of specific risk factors, including PET-CT, as recently reported. Aim: To report the experience in the treatment of ESHL. Material and Methods: Retrospective and descriptive analysis of patients with ESHL treated at the Red de Salud UC-Christus between 2011-2015. Results: Twenty-two patients were treated. In 73%, the tumor was of nodular sclerosis histologic type. Most patients (95%) were in stage II, and 78% had a favorable prognosis according to the Deutsche Hodgkin Studiengruppe (GHSG) criteria. All patients were stratified using PET-CT and treated using the ABVD CT protocol, for 4-6 cycles. Only 5 patients received RT. There was no change of conduct after interim-PET-CT results. Ninety one percent of patients achieved complete response and there were two cases of refractory disease. Both cases underwent hematopoietic stem cell transplantation. After 17 months of median follow-up, 91% of patients are relapse-free, and only one patient died (5%). Conclusions: ABVD offers excellent results for ESHL patients. The benefit of PET-CT should be evaluated with prospective protocols, aiming to select patients needing RT or to reduce the number of CT cycles.
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    Validation and optimization of AFP-based biomarker panels for early HCC detection in Latin America and Europe
    (2023) Beudeker, Boris J. B.; Fu, Siyu; Balderramo, Domingo; Mattos, Angelo Z.; Carrera, Enrique; Diaz, Javier; Prieto, Jhon; Banales, Jesus; Vogel, Arndt; Arrese, Marco; Oliveira, Jeffrey; Groothuismink, Zwier M. A.; van Oord, Gertine; Hansen, Bettina E.; de Man, Robert A.; Debes, Jose D.; Boonstra, Andre
    Background: HCC is a major cause of cancer death worldwide. Serum biomarkers such as alpha-fetoprotein (AFP), protein induced by vitamin K absence-II, and the Gender, Age, AFP-L3, AFP, Des-gamma-carboxy prothrombin (GALAD) score have been recommended for HCC surveillance. However, inconsistent recommendations in international guidelines limit their clinical utility.Methods: In this multicenter study, over 2000 patient samples were collected in 6 Latin American and 2 European countries. The performance of the GALAD score was validated in cirrhotic cases, and optimized versions were tested for early-stage HCC and prediagnostic HCC detection.Results: The GALAD score could distinguish between HCC and cirrhosis in Latin American patients with an AUC of 0.76, sensitivity of 70%, and specificity of 83% at the conventional cutoff value of -0.63. In a European cohort, GALAD had an AUC of 0.69, sensitivity of 66%, and specificity of 72%. Optimizing the score in the 2 large multicenter cohorts revealed that AFP-L3 contributed minimally to early-stage HCC detection. Thus, we developed a modified GALAD score without AFP-L3, the ASAP (age, sex, AFP, and protein induced by vitamin K absence-II), which showed promise for early-stage HCC detection upon validation. The ASAP score also identified patients with cirrhosis at high risk for advanced-stage HCC up to 15 months before diagnosis (p < 0.0001) and differentiated HCC from hemangiomas, with a specificity of 100% at 71% sensitivity.Conclusion: Our comprehensive analysis of large sample cohorts validates the GALAD score's utility in Latin American, Spanish, and Dutch patients for early-stage HCC detection. The optimized GALAD without AFP-L3, the ASAP score, is a good alternative and shows greater promise for HCC prediction.