Produção acadêmica-PPGEB

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https://repositorio.univap.br/handle/123456789/83

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Navegando Produção acadêmica-PPGEB por Autor "Almeida, Rainara Moreno Sanches de"

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    Analysis of the effects of Photodynamic therapy with Photodithazine on the treatment of 9l/lacZ cells, in vitro study
    (Elsevier) Vitorio, Gabrielle dos Santos; Almeida, Rainara Moreno Sanches de; Pinto, Juliana Guerra; Fontana, Letícia Corrêa; Ferreira-Strixino, Juliana
    Gliosarcoma is an aggressive brain tumor. Photodynamic Therapy (PDT) is a treatment that can be used for various cancers of the CNS. The aim of this study was to analyze the effects of PDT with Photodithazine (PDZ) in the treatment of gliosarcoma, using 9 L/lacZ cells and serial concentrations of 200 μg/mL to 3.1 μg/mL of PDZ. The samples were divided into two groups: dark and light (10 J/cm2). The PDZ was internalized along all the cytoplasmic extension. Viability tests demonstrated a reduction in viable cells after PDT. The production of ROS was concentration-dependent and PDZ was found in mitochondria and lysosomes, presenting a discrete connection with α-tubulin. However, this structure is likely damaged, evidenced by changes in the morphological analysis. Thus, according to the parameters of this study, PDZ proved to be an interesting PS in PDT for the treatment of gliosarcoma, with the inherent limitations of an in vitro study.
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    Comparison of the Photodynamic Effect of Two Chlorins, Photodithazine and Fotoenticine, in Gliosarcoma Cells
    (MDPI) Fontana, Letícia Corrêa; Pinto, Juliana Guerra; Magalhães, Jéssica Aparecida; Tada, Dayane Batista; Almeida, Rainara Moreno Sanches de; Pacheco-Soares, Cristina; Ferreira-Strixino, Juliana
    The treatment and prognosis of cancers of the nervous system remain unfavorable to the patient, which makes it necessary to study alternative therapies as primary or adjuvant treatments to existing methods. Photodynamic Therapy (PDT) is a method that consists of combining a photosensitizer (PS), a light source at the appropriate wavelength, and molecular oxygen, forming reactive oxygen species (ROS), leading to death in the target cell. The objective of this work was to compare the effects of PDT with two chlorins, Photodithazine (PDZ) and Fotoenticine (FTC), in 9L/lacZ gliosarcoma cell lines. Both chlorins, together with an LED device at 660 nm with a fluence of 10 J/cm2 , were included in the study. It was observed that the response to therapy depends on the concentration and type of PS used. In addition, PDZ showed a higher quantum yield of singlet oxygen generation than FTC.
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    Modelo de florestas aleatórias para identificar falsos positivos na triagem de fibrose cística com dados artificiais
    (Grupo MultiAtual Educacional) Custódio, Paulo Rogério Siqueira; Oliveira , Virginia Klausner de; Ogawa, Guilherme Maerschner; Almeida, Rainara Moreno Sanches de
    A Fibrose Cística é uma doença letal que é caracterizada por infecções crônicas no pulmão, insuficiência pancreática e elevados níveis de cloro no suor, essa doença é causada pela mutação no gene do Regulador de Condutância Transmembrana da Fibrose Cística (CFTR), essa doença faz com que o organismo produza secreções espessas e viscosas que obstruem os pulmões, pâncreas e no ducto biliar (RIBEIRO ROSA e colab., 2008). Esta doença faz parte do programa de Triagem Neonatal Brasileiro, sendo triada através da quantificação do Tripsinogênio Imunorreativo (IRT), entretanto essa tripsina apresenta um elevado índice de resultados falsos positivos, isso faz com que seja necessário um outro teste para confirmação do diagnóstico. Sabe-se pela literatura que existem fatores que influenciam na alteração da tripsina como a etnia por exemplo devido a doença ser em sua grande maioria na população caucasiana. Então este trabalho propõe a utilização de técnicas de florestas aleatórias para conseguir detectar a probabilidade de um resultado ser falso positivo analisando as informações
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    Performance of Multiplex Detection Method of IgM Class Antibodies against Toxoplasma gondii, Rubella and Human Cytomegalovirus
    (JSciMed Central) Almeida, Rainara Moreno Sanches de; Ogawa, Guilherme Maerschner; Custódio, Paulo Rogério Siqueira; Sampaio, Maria Alcantara Socorro; Silva, Newton Soares da; Soares, Cristina Pacheco
    Serological diagnosis during neonatal screening is crucial in disease prevention. Among the infectious diseases, the most common are toxoplasmosis, rubella, and cytomegalovirus. Traditional diagnostic methods are used to detect a single infectious agent per test. The use of multiplex detection methods increases productivity and reduces the amount of material used, resulting in a more efficient test from a technical, environmental, and economic point of view. The study’s objective was to evaluate the performance of a new diagnostic method aimed at neonatal screening using the multiplex platform of magnetic microspheres from the company Luminex Corporation. For this, tests were carried out for analytical validation of the diagnostic product developed following the rules of the National Health Surveillance Agency (ANVISA) of Brazil. The parameters evaluated were repeatability, reproducibility, linearity, robustness, high dose, minimum detection limit, and analytical specificity. All data obtained met the acceptance criteria of RDC 166/17 of 2017 for the use of the diagnostic product in the national territory. Repeatability and reproducibility tests showed a CV of less than 15% between replicates of the same operator and different operators. The kit showed linearity throughout the operating range with R2 above 0.990, and no effect of high-efficiency dose was observed in the chosen working dilution. In addition, the kit did not show interference from the matrix with the results, and it was observed that small and deliberate changes in the incubation time of each reagent did not have a significant effect on the data obtained.