EVANDRO SOBROZA DE MELLO

(Fonte: Lattes)
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18
Lattes
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Patologia, Faculdade de Medicina - Docente
Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina
LIM/14 - Laboratório de Investigação em Patologia Hepática, Hospital das Clínicas, Faculdade de Medicina
LIM/24 - Laboratório de Oncologia Experimental, Hospital das Clínicas, Faculdade de Medicina

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  • conferenceObject
    Characterization of EGFR Activating Mutations in Brazilian Patients with Pulmonary Adenocarcinoma
    (2015) YEN, Cheng T.; BITTON, Rafael C.; LIMA, Luiz G. C. A. De; AMADIO, Alex V.; TAKAHASHI, Tiago K.; MARINI, Andrea M.; TAKAGAKI, Tereza Y.; TERRA, Ricardo M.; MELLO, Evandro S.; CASTRO JR., Gilberto De
  • conferenceObject
    A phase III, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of pregabalin in the prevention and reduction of oxaliplatin-induced painful neuropathy (PreOx)
    (2015) ANDRADE, Daniel Ciampi de; TEIXEIRA, Manoel Jacobsen; GALHARDONI, Ricardo; FERREIRA, Karine A. S. L.; MALIENO, Paula Braz; SCISCI, Nathalia; RIECHELMANN, Rachel Pimenta; TEIXEIRA, William G. J.; SARAGIOTTO, Daniel Fernandes; SILVA, Valquiria Aparecida; RAICHER, Irina; CASTRO, Isac de; PARRAVANO, Daniella; FUKUSHIMA, Julia Tizue; LEFAUCHEUR, Jean-Pascal; BOUHASSIRA, Didier; MACARENCO, Ricardo Silvestre e Silva; MELLO, Evandro Sobroza de; HOFF, Paulo Marcelo
  • article 4 Citação(ões) na Scopus
    Quantification of C4d deposition and hepatitis C virus RNA in tissue in cases of graft rejection and hepatitis C recurrence after liver transplantation
    (2015) SONG, Alice Tung Wan; MELLO, Evandro Sobroza de; ALVES, Venancio Avancini Ferreira; CAVALHEIRO, Norma de Paula; MELO, Carlos Eduardo; BONAZZI, Patricia Rodrigues; TENGAN, Fatima Mitiko; FREIRE, Maristela Pinheiro; BARONE, Antonio Alci; D'ALBUQUERQUE, Luiz Augusto Carneiro; ABDALA, Edson
    Histology is the gold standard for diagnosing acute rejection and hepatitis C recurrence after liver transplantation. However, differential diagnosis between the two can be difficult. We evaluated the role of C4d staining and quantification of hepatitis C virus (HCV) RNA levels in liver tissue. This was a retrospective study of 98 liver biopsy samples divided into four groups by histological diagnosis: acute rejection in patients undergoing liver transplant for hepatitis C (RejHCV+), HCV recurrence in patients undergoing liver transplant for hepatitis C (HCVTx+), acute rejection in patients undergoing liver transplant for reasons other than hepatitis C and chronic hepatitis C not transplanted (HCVTx-). All samples were submitted for immunohistochemical staining for C4d and HCV RNA quantification. Immunoexpression of C4d was observed in the portal vessels and was highest in the HCVTx- group. There was no difference in C4d expression between the RejHCV+ and HCVTx+ groups. However, tissue HCV RNA levels were higher in the HCVTx+ group samples than in the RejHCV+ group samples. Additionally, there was a significant correlation between tissue and serum levels of HCV RNA. The quantification of HCV RNA in liver tissue might prove to be an efficient diagnostic test for the recurrence of HCV infection.
  • article 21 Citação(ões) na Scopus
    Mutational Profile and New IASLC/ATS/ERS Classification Provide Additional Prognostic Information about Lung Adenocarcinoma: A Study of 125 Patients from Brazil
    (2015) MELO, Andreia Cristina de; SA, Vanessa Karen de; STERNBERG, Cinthya; OLIVIERI, Eloisa Ribeiro; CUNHA, Isabela Werneck da; FABRO, Alexandre Todorovic; CARRARO, Dirce Maria; SILVA, Milton Jose de Barros e; INADA, Haynna Kimie Pimenta; MELLO, Evandro Sobrosa de; SOARES, Fernando Augusto; TAKAGAKI, Tereza; FERREIRA, Carlos Gil; CAPELOZZI, Vera Luiza
    Aim: To show additional prognostic information about the mutational profile and new International Association for the Study of Lung Cancer/American Thoracic Society/European Respiratory Society (IASLC/ATS/ERS) classification of adenocarcinoma (ADC) in patients without epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor treatments. Methods: In human lung ADC patients (n = 125), including 24 lepidic, 67 acinar, 23 papillary, and 11 solid predominant subtypes, EGFR and KRAS were sequenced, and anaplastic lymphoma kinase (ALK) rearrangements were screened using fluorescence in situ hybridization (FISH). Results: EGFR was mutated in 21.6% of patients with 19.57% showing a mean expression. The most frequent EGFR mutation was a deletion in exon 19, followed by an L858R amino acid substitution in exon 21. KRAS was mutated in 26.4% of patients with 50% displaying mean expression. ALK rearrangement was detected in 6 patients (4.8%). Predominant acinar ADC was strongly associated with EGFR and KRAS mutation. Clinical stage, lymph node metastases, and EGFR mutation in exon 18 showed a significant difference in disease-free and overall survival, but only a trend significance for EGFR and KRAS mutations. Multivariate analysis revealed that men aged >71 years, with a history of smoking (<72 packs/year), clinical stage I/II, and acinar histologic subtype presented better survival than women aged <= 71 years, with a history of smoking (>72 packs/year), and having a predominant solid ADC and EGFR mutation in exon 18. Conclusions: These results indicate that the mutational profile and new IASLC/ATS/ERS classification provide additional prognostic information about lung ADC. (C) 2015 S. Karger AG, Basel
  • article 28 Citação(ões) na Scopus
    Carnoy's solution is an adequate tissue fixative for routine surgical pathology, preserving cell morphology and molecular integrity
    (2015) PEREIRA, Marina A.; DIAS, Andre R.; FARAJ, Sheila F.; CIRQUEIRA, Cinthya dos S.; TOMITAO, Michele T.; NAHAS, Sergio Carlos; RIBEIRO JR., Ulysses; MELLO, Evandro S. de
    Aims: To compare Carnoy's solution (CS) and 10% neutral buffered formalin solution (NBF) as tissue fixatives in colorectal cancer specimens. Methods and results: Surgical specimens from patients with colorectal cancer were analysed. Three groups were studied, as follows: group 1 consisted of 16 paired samples fixed in CS and NBF; and groups 2 and 3 consisted of 14 prospective and 80 retrospective samples, respectively, both randomized for fixation in CS or NBF. Groups 1 and 2 were analysed for amount, quality and integrity of DNA. Morphological analysis, including some of the usual special stains and polymerase chain reaction (PCR), were also performed for group 1, and Sanger sequencing for group 2. Immunohistochemical (IHC) reactions for mismatch repair proteins were studied in groups 1 and 3. Fixative performances were similar for morphology, special stains, and IHC reactions, as well as for the amount, quality and integrity of extracted DNA. PCR amplification was not possible in two cases from CS group 1. Sanger sequencing gave conclusive results for the CS samples tested. Conclusions: Carnoy's solution and NBF are equivalent fixatives for colorectal cancer specimens and are adequate for routine utilization in surgical and molecular pathology.
  • article 16 Citação(ões) na Scopus
    Effects of ischemic preconditioning in a pig model of large-for-size liver transplantation
    (2015) LEAL, Antonio Jose Goncalves; TANNURI, Ana Cristina Aoun; BELON, Alessandro Rodrigo; GUIMARAES, Raimundo Renato Nunes; COELHO, Maria Cecilia Mendonca; GONCALVES, Josiane de Oliveira; SERAFINI, Suellen; MELO, Evandro Sobroza de; TANNURI, Uenis
    OBJECTIVE: In most cases of pediatric liver transplantation, the clinical scenario of large-for-size transplants can lead to hepatic dysfunction and a decreased blood supply to the liver graft. The objective of the present experimental investigation was to evaluate the effects of ischemic preconditioning on this clinical entity. METHODS: Eighteen pigs were divided into three groups and underwent liver transplantation: a control group, in which the weights of the donors were similar to those of the recipients, a large-for-size group, and a large-for-size + ischemic preconditioning group. Blood samples were collected from the recipients to evaluate the pH and the sodium, potassium, aspartate aminotransferase and alanine aminotransferase levels. In addition, hepatic tissue was sampled from the recipients for histological evaluation, immunohistochemical analyses to detect hepatocyte apoptosis and proliferation and molecular analyses to evaluate the gene expression of Bax ( pro-apoptotic), Bcl-XL (anti-apoptotic), c-Fos and c-Jun (immediate-early genes), ischemia-reperfusion-related inflammatory cytokines (IL-1, TNF-alpha and IL-6, which is also a stimulator of hepatocyte regeneration), intracellular adhesion molecule, endothelial nitric oxide synthase (a mediator of the protective effect of ischemic preconditioning) and TGF-beta (a pro-fibrogenic cytokine). RESULTS: All animals developed acidosis. At 1 hour and 3 hours after reperfusion, the animals in the large-for-size and large-for-size + ischemic preconditioning groups had decreased serum levels of Na and increased serum levels of K and aspartate aminotransferase compared with the control group. The molecular analysis revealed higher expression of the Bax, TNF-alpha, I-CAM and TGF-beta genes in the large-for-size group compared with the control and large-for-size + ischemic preconditioning groups. Ischemic preconditioning was responsible for an increase in c-Fos, IL-1, IL-6 and e-NOS gene expression. CONCLUSION: Ischemia-reperfusion injury in this model of large-for-size liver transplantation could be partially attenuated by ischemic preconditioning.
  • conferenceObject
    Validating ECOG Performance Status as a Prognostic Factor in Brazilian Patients with Pulmonary Adenocarcinoma
    (2015) BITTON, Rafael C.; LIMA, Luiz G. C. A. De; ROITBERG, Felipe S. R.; MESQUITA, Cristiane; MARTINS, Renata E.; YEN, Cheng T.; TERRA, Ricardo M.; MELLO, Evandro S.; CASTRO JR., Gilberto De