Navegando por Autor "Reis, Jordana Grazziela Alves Coelho dos"

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In-house ELISA method to analyze anti-Trypanosoma cruzi IgG reactivity for differential diagnosis and evaluation of Chagas disease morbidity.
(2012) Santos, Lilian da Silva; Torres, Rosália Morais; Assis, Girley Francisco Machado de; Bahia, Maria Terezinha; Martins, Helen Rodrigues; Carvalho, Andréa Teixeira de; Reis, Jordana Grazziela Alves Coelho dos; Viñas, Pedro Albajar; Martins Filho, Olindo Assis; Lana, Marta de
O objetivo foi desenvolver um método sorológico in-house de alta especificidade e sensibilidade para diagnosticar e monitorar a morbidade da doença de Chagas. Métodos: Para tal, a reatividade sorológica de IgG e subclasses foi testada em soros de pacientes chagásicos de Berilo, Vale do Jequitinhonha/MG/Brasil. A reatividade sorológica foi também avaliada em amostras de pacientes com outras doenças infecto-contagiosas relevantes, incluindo o HIV, vírus da hepatite C (VHC), sífilis (SYP), leishmaniose visceral (LV), leishmaniose tegumentar americana (LTA) e controles não infectados (NI) para verificar o desempenho do método. Outras análises foram feitas para avaliar a aplicabilidade desta metodologia no monitoramento da morbidade da doença de Chagas. Com este propósito os pacientes com doença de Chagas foram anteriormente classificados em três grupos: indeterminados (IND), cardíacos (CARD) e digestivos/mistos (DIG/Mis) conforme seu estado clínico. Resultados: A análise da reatividade sorológica de IgG total na diluição 1:40 mostrou ser uma abordagem importante no diagnóstico da doença de Chagas (100% de sensibilidade e especificidade e ausência de reação cruzada com as demais infecções). A análise das subclasses de IgG mostrou reação cruzada principalmente com NI, LV e LTA em todas as diluições. O grupo IND apresentou a maior reatividade para IgG3 e o grupo DIG/Mis apresentou nível mais elevado de IgG se comparados aos grupos IND e CARD. Conclusões: Estes achados demonstram que o método de ELISA in-house apresenta uma promissora aplicabilidade no diagnóstico diferencial e na avaliação da morbidade da doença de Chagas.
Serum biomarkers in patients with unilateral or bilateral active pulmonary tuberculosis : immunological networks and promising diagnostic applications.
(2023) Pascoal, Vanessa Peruhype Magalhães; Araújo, Fernanda Fortes de; Papini, Tatiane Figueiredo de Morais; Wendling, Ana Paula Barbosa; Azevedo, Ana Carolina Campi; Reis, Jordana Grazziela Alves Coelho dos; Almeida, Isabela Neves de; Antonnelli, Lis Ribeiro do Valle; Amaral, Laurence Rodrigues do; Gomes, Matheus de Souza; Sousa, Joaquim Pedro Brito de; Santos, Silvana Maria Elói; Augusto, Valéria Maria; Dalcolmo, Margareth Maria Pretti; Carneiro, Cláudia Martins; Carvalho, Andréa Teixeira de; Martins Filho, Olindo Assis
The present observational study was designed to characterize the integrative profile of serum soluble mediators to describe the immunological networks associated with clinical findings and identify putative biomarkers for diagnosis and prognosis of active tuberculosis. The study population comprises 163 volunteers, including 84 patients with active pulmonary tuberculosis/(TB), and 79 controls/(C). Soluble mediators were measured by multiplexed assay. Data analysis demonstrated that the levels of CCL3, CCL5, CXCL10, IL-1β, IL-6, IFN-γ, IL-1Ra, IL-4, IL-10, PDGF, VEGF, G-CSF, IL-7 were increased in TB as compared to C. Patients with bilateral pulmonary involvement/(TB-BI) exhibited higher levels of CXCL8, IL-6 and TNF with distinct biomarker signatures (CCL11, CCL2, TNF and IL-10) as compared to patients with unilateral infiltrates/(TB-UNI). Analysis of biomarker networks based in correlation power graph demonstrated small number of strong connections in TB and TB-BI. The search for biomarkers with relevant implications to understand the pathogenetic mechanisms and useful as complementary diagnosis tool of active TB pointed out the excellent performance of single analysis of IL-6 or CXCL10 and the stepwise combination of IL-6 → CXCL10 (Accuracy = 84 %; 80 % and 88 %, respectively). Together, our finding demonstrated that immunological networks of serum soluble biomarkers in TB patients differ according to the unilateral or bilateral pulmonary involvement and may have relevant implications to understand the pathogenetic mechanisms involved in the clinical outcome of Mtb infection.
Systemic Immunological changes in patients with distinct clinical outcomes during Mycobacterium tuberculosis infection.
(2017) Papini, Tatiane Figueiredo Morais; Reis, Jordana Grazziela Alves Coelho dos; Wendling, Ana Paula Barbosa; Antonelli, Lis Ribeiro do Valle; Wowk, Pryscilla Fanini; Bonato, Vânia Luiza Deperon; Augusto, Valéria Maria; Santos, Silvana Maria Elói; Martins Filho, Olindo Assis; Carneiro, Cláudia Martins; Carvalho, Andréa Teixeira de
Background: The lung lesions in an individual infected with tuberculosis (TB) are surprisingly variable and independent of each other. However, there is no circulating biomarker yet able to segregate patients according to the extent of lung lesions. Materials and methods: In this study, the phenotypic and functional profile of leukocytes of patients with active pulmonary tuberculosis (TB) and controls (CO) were fully scrutinized by immunophenotyping assays and in vitro short-term whole blood culture. The TB group was subdivided according to the extent of lung lesions as unilateral (UNI) and bilateral (BI). Results: The results show that TB group display an altered leukocyte profile in the peripheral blood with significant lower counts of NK-cells, CD3+CD56+CD16+/− NKT-cells, CD4+T-cells, CD19+B-cells when compared to CO. Increased CD4+T-cells and CD8+T-cell activation was observed by the upregulation of activation markers (HLA-DR) as well as of chemokine receptors (CCR2, CCR3, and CXCR4). In addition, TB group presented a significant decrease proportion of CD14LowCD16+ monocytes despite the increase in HLA-DR expression. Regarding the severity of the disease, in the BI group a reduction in frequency of CD19+CD5+ B-cells and expression of HLA-DR in CD14LowCD16+ monocytes was observed. Furthermore, the extent of lung lesions influences the production of molecules as observed by significantly larger production of IL-4 by neutrophils, total T-cells, CD4+T-cells, CD8+T-cells and CD19+B-cells in UNI as compared to BI. By contrast, in BI group the frequency of high producers of both IL-17+CD4+T-cells and IL-17+CD8+T-cells were significantly increased than UNI, suggesting the deleterious role of these subsets during active pulmonary Mtb infection. Conclusion: The immunophenotypic characterization of unilateral and bilateral active TB performed in the present study indicates that the extent of lung lesion could be associated with a fine-tuning between immunological responses during untreated Mtb infection.