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Pyoderma gangrenosum diagnosed in a high-risk myelodysplastic neoplasm patient with trisomy 8: a rare case report

Anais Brasileiros de Dermatologia 2025年第3期100卷 602-605页

作者： Martins, Renato Mendes Ribeiro-Junior, Howard Lopes Mendonça, Natália Feitosa Arrais Minete Távora, Fábio Rocha Fernandes Pinheiro, Ronald Feitosa Center for Research and Drug Development Universidade Federal do Ceará CE Fortaleza Brazil Post-Graduate Program of Pathology Universidade Federal do Ceará CE Fortaleza Brazil Post-Graduate Program in Translational Medicine Universidade Federal do Ceará CE Fortaleza Brazil Post-Graduate Program in Medical Science Universidade Federal do Ceará CE Fortaleza Brazil

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The death of Pope Francis and his global health legacy

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Lancet (London, England) 2025年第10491期405卷 1735-1736页

作者： Howard Lopes Ribeiro Center for Research and Drug Development Federal University of Ceará Fortaleza Ceará 60430-275 Brazil Post-Graduate Program in Pathology Federal University of Ceará Fortaleza Ceará Brazil Post-Graduate Program in Translational Medicine Federal University of Ceará Fortaleza Ceará Brazil. Electronic address: howard@ufc.br.

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Predicting major adverse cardiovascular events after orthotopic liver transplantation using a supervised machine learning model:A cohort study

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World Journal of Hepatology 2024年第2期16卷 193-210页

作者： Jonathan Soldera Leandro Luis Corso Matheus Machado Rech Vinícius Remus Ballotin Lucas Goldmann Bigarella Fernanda Tomé Nathalia Moraes Rafael Sartori Balbinot Santiago Rodriguez Ajacio Bandeira de Mello Brandão Bruno Hochhegger Post Graduate Program at Acute Medicine and Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom Postgraduate Program in Pathology Federal University of Health Sciences of Porto Alegre(UFCSPA)Porto Alegre 90050-170Brazil Department of Engineering Universidade de Caxias do SulCaxias do Sul 95070-560Brazil School of Medicine Universidade de Caxias do SulCaxias do Sul 95070-560Brazil Postgraduate Program in Hepatology Federal University of Health Sciences of Porto Alegre(UFCSPA)Porto Alegre 90050-170Brazil

BACKGROUND Liver transplant(LT)patients have become older and *** rate of post-LT major adverse cardiovascular events(MACE)has increased,and this in turn raises 30-d post-LT *** cardiac stress testing loses accuracy when applied to pre-LT cirrhotic *** To assess the feasibility and accuracy of a machine learning model used to predict post-LT MACE in a regional *** This retrospective cohort study involved 575 LT patients from a Southern Brazilian academic *** developed a predictive model for post-LT MACE(defined as a composite outcome of stroke,new-onset heart failure,severe arrhythmia,and myocardial infarction)using the extreme gradient boosting(XGBoost)machine learning *** addressed missing data(below 20%)for relevant variables using the k-nearest neighbor imputation method,calculating the mean from the ten nearest neighbors for each *** modeling dataset included 83 features,encompassing patient and laboratory data,cirrhosis complications,and pre-LT cardiac *** performance was assessed using the area under the receiver operating characteristic curve(AUROC).We also employed Shapley additive explanations(SHAP)to interpret feature *** dataset was split into training(75%)and testing(25%)*** was evaluated using the Brier *** followed Transparent Reporting of a Multivariable Prediction Model for Individual Prognosis or Diagnosis guidelines for ***-learn and SHAP in Python 3 were used for all *** supplementary material includes code for model development and a user-friendly online MACE prediction *** Of the 537 included patients,23(4.46%)developed in-hospital MACE,with a mean age at transplantation of 52.9 *** majority,66.1%,were *** XGBoost model achieved an impressive AUROC of 0.89 during the training *** model exhibited accuracy,precision,recall,and F1-score values of 0.84,0.85,0.80,and 0.79,***

关键词： Liver transplantation Major adverse cardiac events Machine learning Myocardial perfusion imaging Stress test

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P-Glycoprotein Drives Glioblastoma Survival and Chemotherapy Resistance: Potential as a Promising Liquid Biopsy Biomarker

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American Journal of pathology 2025年

作者： Pilotto Heming, Carlos de Souza Barbosa, Isabel Lyra Miranda, Renan Nogueira Ugarte, Odile Santório de São José, Vitória Moura Neto, Vivaldo Aran, Veronica Instituto Estadual do Cérebro Paulo Niemeyer (IECPN) Rio de Janeiro Brazil Post-Graduate Program in Anatomic Pathology Faculdade de Medicina Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil

Drug resistance is a major challenge in cancer therapy, and the expression of efflux pumps such as P-glycoprotein (P-gp, ABCB1) often correlates with poor prognosis in various tumors, including glioblastoma (GB). Considering that different roles for these proteins have been established in the biology of various tumors, this study aimed to investigate the functions of P-gp in GB-derived cells by evaluating its survival, migratory, and apoptosis-regulating capabilities, as well as its potential as a liquid biopsy biomarker. P-gp expression was diminished via siRNA to determine its exact role in GB biology. The P-gp mRNA levels were evaluated by using quantitative real-time RT-PCR. With respect to liquid biopsy, circulating cell-free RNA was extracted from plasma belonging to patients diagnosed with GB, and P-gp levels were compared with matching tumor tissues using digital PCR. P-gp silencing significantly decreased viability, increased apoptosis, and enhanced chemotherapy sensitivity in GB cells, although it did not affect migratory patterns. Finally, P-gp expression levels in circulating cell-free RNA from patients with GB matched tumor tissue, whereas healthy volunteers appeared to bear no circulating P-gp. Taken together, the results indicate that P-gp affects GB tumor biology beyond its known role in drug resistance and could integrate a broader molecular signature for future diagnosis via liquid biopsy. © 2025 American Society for Investigative pathology

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Anti-Leishmania infantum in vitro effect of n-cyclohexyl-1,2,4-oxadiazole and its ADME/TOX parameters

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Journal of Parasitic Diseases 2022年第2期46卷 317-322页

作者： Pinheiro, Cristian Vicson Gomes da Silva, Wildson Max Barbosa Rodrigues, João Pedro Viana Rocha, Yasmim Mendes Teixeira, Maria Jania de Oliveira, Ronaldo Nascimento de Souza, Natália Vasconcelos Nicolete, Roberto Oswaldo Cruz Foundation (Fiocruz Ceará) Rua São José S/N CE Eusébio 61760-000 Brazil Christus University Center (Unichristus) CE Fortaleza Brazil Post-Graduate Program in Pharmaceutical Sciences Federal University of Ceará CE Fortaleza Brazil Department of Pathology and Legal Medicine Federal University of Ceará CE Fortaleza Brazil Department of Chemistry Federal Rural University of Pernambuco PE Recife Brazil

Leishmaniasis is a disease that represents a serious global health problem with a potentially fatal outcome in some cases. Leishmania spp. is transmitted by the bite of a sandfly and the disease is endemic in 98 countries. Treatment is carried out with toxic drugs and not consistently effective, so there is a need for new treatments. Oxadiazoles are five-membered heterocyclic compounds, and their antileishmanial activity is well documented in the literature. Specifically, n-cyclohexyl-1,2,4-oxadiazole (2b) was designed to obtain the simplified molecular data line entry system (SMILES). The approach for predicting pharmacokinetic properties used was pkCSM—Pharmacokinetics and ADME/TOX parameters were achieved. SMILES of 2b and Amphotericin B (ANF B) were submitted to the server and the results were compared. The cytotoxic action of 2b on host cells (LLC-MK2) was also evaluated, using MTT salt and antileishmanial activity against Leishmania infantum promastigotes at different concentrations for 24 h. The molecule 2b studied here demonstrated low toxicity in LLC-MK2 cells even at the highest concentration (1000 µM) with cell viability of 69%. Furthermore, it demonstrated anti-L. infantum action with cell viability of 13% at the highest concentration (1000 μM), while (ANF B) (16 μg/mL) demonstrated cell viability of 7%, justifying the need for further studies with n-cyclohexyl-1.2,4-oxadiazole employing experimental models of leishmaniasis. © 2021, Indian Society for Parasitology.

关键词： ADME/TOX Cytotoxicity Leishmania infantum Oxadiazoles

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5-ALA mediated photodynamic therapy increases natural killer cytotoxicity against oral squamous cell carcinoma cell lines

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Journal of Biophotonics 2024年第9期17卷

作者： Molon, Angela Cristina Heguedusch, Daniele Nunes, Fabio Daumas Cecatto, Rebeca Boltes dos Santos Franco, Adriana Lino de Oliveira Rodini Pegoraro, Camila Rodrigues, Maria Fernanda Setúbal Destro Post Graduate Program in Biophotonics Applied to Health Sciences Nove de Julho University São Paulo Brazil Department of Stomatology Discipline of Oral and Maxillofacial Pathology School of Dentistry University of São Paulo São Paulo Brazil Department of Biological Sciences University of São Paulo Bauru School of Dentistry SP Bauru Brazil

Oral squamous cell carcinoma (OSCC) constitutes over 90% of oral cancers, known for its aggressiveness and poor prognosis. Photodynamic therapy (PDT) has emerged as a promising adjuvant therapy and is linked to immunogenic cell death, activating innate and adaptive anti-tumor responses. Natural Killer (NK) cells, key players in malignant cell elimination, have not been extensively studied in PDT. This study evaluates whether PDT increases OSCC cell lines' susceptibility to NK cell cytotoxicity. PDT, using 5-aminolevulinic acid (5-ALA) and LED irradiation, was applied to Ca1 and Luc4 cell lines. Results showed a dose-dependent viability decrease post-PDT. Gene expression analysis revealed upregulation of NK cell-activating ligands (ULBP1-4, MICA/B) and decreased MHC class I expression in Ca1, suggesting increased NK cell susceptibility. Enhanced NK cell cytotoxicity was confirmed in Ca1 but not in Luc4 cells. These findings indicate that PDT may enhance NK cell-mediated cytotoxicity in OSCC, offering potential for improved treatment strategies. © 2024 Wiley-VCH GmbH.

关键词： Photodynamic therapy

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WCN24-701 EFFECTS OF SULFORAPHANE SUPPLEMENTATION ON PLASMA LEVELS OF UREMIC TOXINS IN PATIENTS UNDERGOING HEMODIALYSIS

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Kidney International Reports 2024年第4期9卷 S223-S223页

作者： Denise Mafra Marcia Ribeiro Livia Alvarenga Ludmila Cardozo Lia Nakao Marcelo Ribeiro-Alves Julie Ann Kemp Niterói Post-Graduate Program in Nutrition Sciences Brazil Post-Graduate Program in Biological Sciences – Physiology Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Post-Graduate Program in Nutrition Sciences Fluminense Federal University (UFF) Niterói Basic Pathology Department Federal University of Paraná (UFPR) Curitiba HIV/AIDS Clinical Research Center National Institute of Infectology Evandro Chagas (INI/Fiocruz) Rio de Janeiro Post-Graduate Program in Nutrition Sciences Federal Fluminense University (UFF) Niterói

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Cohesin mutations in myelodysplastic syndrome: The missing role of ataxia-telangiectasia mutated and genomic ancestry

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Cancer 2025年第11期131卷 e35928页

作者： Howard Lopes Ribeiro Junior Jonas Nogueira Ferreira Maciel Gusmão João Vitor Caetano Goes Júlio César Claudino Dos Santos Roberta Taiane Germano de Oliveira Ronald Feitosa Pinheiro Center for Research and Drug Development Federal University of Ceará Fortaleza Brazil. Post-Graduate Program in Pathology Federal University of Ceará Fortaleza Brazil. Post-Graduate Program in Translational Medicine Federal University of Ceará Fortaleza Brazil. University of the Extreme South of Santa Catarina Criciúma Brazil.

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The Vocal Quality of the Sender is Able to Influence the Cognitive Performance and Cortisol Level of the Listener

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Journal of Voice 2024年

作者： da Silva, Kelly Behlau, Mara Speech-Language Pathology Course Campus Lagarto Universidade Federal de Sergipe - UFS SE Lagarto Brazil Post-graduate program in Human Communication Disorders Universidade Federal de São Paulo SP São Paulo Brazil Voice Specialization Course Centro de Estudos da Voz SP São Paulo Brazil

Objective: To verify the influence of the sender's vocal quality on performance in cognitive tests and on the receiver's cortisol level. Study design: Observational, cross-sectional, and analytical study. Methods: Four voices were selected to represent adapted voice (AdV), and rough voice of discreet degree (DV), moderate (MV), and intense (IV). These participants recorded the stimuli used in the attention and memory tests, which included 139 undergraduate students as receivers. Saliva was collected from recipients for cortisol assessment one minute before and after 15, 30 and 45 minutes of the cognitive assessment. Results: Statistically significant differences were identified between the groups in the repetition test, with worse results in IV. Cortisol increased significantly in the MV group when compared with the other groups after 15 minutes of the cognitive test. Conclusions: Emitters’ rough voices can negatively influence performance in cognitive tests that require attention and working memory and leads to a short-term increase in the receiver's cortisol levels. © 2024 The Voice Foundation

关键词： Attention Cognition Cortisol Memory Voice Voice quality

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Leiomyoadenomatoid tumor of uterus: two case reports with literature review

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Surgical and Experimental pathology 2021年第1期4卷 1-5页

作者： Adorno, Flora Ávila Coelho, Karina Munhoz de Paula Alves Bublitz, Giuliano Stefanello Stall, Jaqueline de França, Paulo Henrique Condeixa Pathology Residency Program São José Municipal Hospital Joinville Brazil Centro de Diagnósticos Anátomo-Patológicos (CEDAP) Joinville Brazil Post-graduate Program in Health and Environment Universidade da Região de Joinville (UNIVILLE) Joinville Brazil

Adenomatoid tumors (AT) are benign neoplasms of mesothelial origin that occur more frequently in the genital tracts. In uterus, AT are usually located in the subserosa of the cornual myometrium. Microscopically, it is characterized by interanastomosing pseudoglands or pseudovascular spaces and striking smooth-muscle hypertrophy is often present. In some cases, the prominence of smooth muscle component simulates a leiomyoma and the lesion is denoted as a leiomyoadenomatoid tumor. The microscopic appearance of the adenomatoid component (AC) may mimic a malignant tumor due to irregular pseudoinfiltration with tubular formations. Just 16 cases with this morphological presentation were found in the literature review. The first case, a 38-year-old female, showed lower abdominal pain, menorrhagia, postcoital bleeding and previous history of uterin leiomyoma. The second case, a 26-year-old female, had clinical complaint of metrorrhagia and received diagnostic hypothesis of leiomyoma after ultrasound image. Both underwent myomectomy. Microscopically, the uterine masses showed intersecting smooth muscle bundles and gland like areas lined by cuboidal epithelioid cells that stained positive for WT1, D2–40 and calretinin in immunohistochemical analysis. The cases were diagnosed as leiomyoadenomatoid tumor of the uterus. This is a benign and rare entity that may mimic malignant tumors due to the pseudo infiltrative appereance of the adenomatoid component, possibly leading to misdiagnosis.

关键词： Adenomatoid tumor Uterine neoplasms Smooth muscle

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