MILTON DE ARRUDA MARTINS
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Clínica Médica, Faculdade de Medicina - Docente
Instituto Central, Hospital das Clínicas, Faculdade de Medicina
LIM/20 - Laboratório de Terapêutica Experimental, Hospital das Clínicas, Faculdade de Medicina - Líder
Instituto Central, Hospital das Clínicas, Faculdade de Medicina
LIM/20 - Laboratório de Terapêutica Experimental, Hospital das Clínicas, Faculdade de Medicina - Líder
8 resultados
Resultados de Busca
Agora exibindo 1 - 8 de 8
- Structure-Activity Association of Flavonoids in Lung Diseases(2014) LAGO, Joao Henrique G.; TOLEDO-ARRUDA, Alessandra C.; MERNAK, Marcia; BARROSA, Kaidu H.; MARTINS, Milton A.; TIBERIO, Iolanda F. L. C.; PRADO, Carla M.Flavonoids are polyphenolic compounds classified into flavonols, flavones, flavanones, isoflavones, catechins, anthocyanidins, and chalcones according to their chemical structures. They are abundantly found in Nature and over 8,000 flavonoids have from different sources, mainly plant materials, have been described. Recently reports have shown the valuable effects of flavonoids as antiviral, anti-allergic, antiplatelet, antitumor, antioxidant, and anti-inflammatory agents and interest in these compounds has been increasing since they can be helpful to human health. Several mechanisms of action are involved in the biological properties of flavonoids such as free radical scavenging, transition metal ion chelation, activation of survival genes and signaling pathways, regulation of mitochondrial function and modulation of inflammatory responses. The anti-inflammatory effects of flavonoids have been described in a number of studies in the literature, but not frequently associated to respiratory disease. Thus, this review aims to discuss the effects of different flavonoids in the control of lung inflammation in some disorders such as asthma, lung emphysema and acute respiratory distress syndrome and the possible mechanisms of action, as well as establish some structure-activity relationships between this biological potential and chemical profile of these compounds.
- Obesity and asthma: beyond T(H)2 inflammation(2015) LEIRIA, Luiz O. S.; MARTINS, Milton A.; SAAD, Mario J. A.Obesity is a major risk factor for asthma. Likewise, obesity is known to increase disease severity in asthmatic subjects and also to impair the efficacy of first-line treatment medications for asthma, worsening asthma control in obese patients. This concept is in agreement with the current understanding that some asthma phenotypes are not accompanied by detectable inflammation, and may not be ameliorated by classical anti-inflammatory therapy. There are growing evidences suggesting that the obesity-related asthma phenotype does not necessarily involve the classical T(H)2-dependent inflammatory process. Hormones involved in glucose homeostasis and in the pathogeneses of obesity likely directly or indirectly link obesity and asthma through inflammatory and noninflammatory pathways. Furthermore, the endocrine regulation of the airway-related preganglionic nerves likely contributes to airway hyperreactivity (AHR) in obese states. In this review, we focused our efforts on understanding the mechanism underlying obesity-related asthma by exploring the T(H)2-independent mechanisms leading to this disease.
- Evidences of Herbal Medicine-Derived Natural Products Effects in Inflammatory Lung Diseases(2016) SANTANA, Fernanda Paula R.; PINHEIRO, Nathalia M.; MERNAK, Marcia Isabel B.; RIGHETTI, Renato F.; MARTINS, Milton A.; LAGO, Joao H. G.; LOPES, Fernanda D. T. Q. dos Santos; TIBERIO, Iolanda F. L. C.; PRADO, Carla M.Pulmonary inflammation is a hallmark of many respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD), and acute respiratory syndrome distress (ARDS). Most of these diseases are treated with anti-inflammatory therapy in order to prevent or to reduce the pulmonary inflammation. Herbal medicine-derived natural products have been used in folk medicine and scientific studies to evaluate the value of these compounds have grown in recent years. Many substances derived from plants have the biological effects in vitro and in vivo, such as flavonoids, alkaloids, and terpenoids. Among the biological activities of natural products derived from plants can be pointed out the anti-inflammatory, antiviral, antiplatelet, antitumor anti-allergic activities, and antioxidant. Although many reports have evaluated the effects of these compounds in experimental models, studies evaluating clinical trials are scarce in the literature. This review aims to emphasize the effects of these different natural products in pulmonary diseases in experimental models and in humans and pointing out some possible mechanisms of action.
- Eosinophilic inflammation in allergic asthma(2013) POSSA, Samantha S.; LEICK, Edna A.; PRADO, Carla M.; MARTINS, Milton A.; TIBERIO, Iolanda F. L. C.Eosinophils are circulating granulocytes involved in pathogenesis of asthma. A cascade of processes directed by Th2 cytokine producing T-cells influence the recruitment of eosinophils into the lungs. Furthermore, multiple elements including interleukin (IL)-5, IL-13, chemoattractants such as eotaxin, Clara cells, and CC chemokine receptor (CCR)3 are already directly involved in recruiting eosinophils to the lung during allergic inflammation. Once recruited, eosinophils participate in the modulation of immune response, induction of airway hyperresponsiveness and remodeling, characteristic features of asthma. Various types of promising treatments for reducing asthmatic response are related to reduction in eosinophil counts both in human and experimental models of pulmonary allergic inflammation, showing that the recruitment of these cells really plays an important role in the pathophysiology of allergic diseases such asthma.
- Online learning and COVID-19: a meta-synthesis analysis(2020) CAMARGO, Cristina Pires; TEMPSKI, Patricia Zen; BUSNARDO, Fabio Freitas; MARTINS, Milton de Arruda; GEMPERLI, RolfThe COVID-19 pandemic demanded a quick shift from presential to e-learning processes. Unlike planned e-learning programs, medical schools have had to quickly deliver the entire medical curriculum using remote strategies. This study aimed to perform a meta-synthesis of previous pandemic situations and describe the experience of the Sao Paulo University School of Medicine. We searched the Cochrane Central Register of Controlled Trials, Medline, EMBASE, Lilacs, Scopus, Web of Science, and ERIC, using the following keywords: (""SARS"" OR ""severe acute respiratory syndrome"" OR ""severe acute respiratory syndrome"" OR ""Middle East Respiratory Syndrome Coronavirus"" OR ""middle east respiratory syndrome*"" OR ""MERS-CoV"" OR ""Mers"" OR ""Middle Eastern Respiratory Syndrome*"" OR ""MERS-CoV*"" OR ""coronavirus"" OR ""Coronavirus Infections"" OR ""coronavirus*"" OR ""COVID-19"" OR ""2019-nCoV"" OR ""SARS-CoV-2"") AND (""online education"" OR ""Education, Distance"" OR ""e-learning"" OR ""course online"" OR ""flipped classroom"") AND (""lockdown"" OR ""social distance"" OR ""quarantine""). The endpoints were the online platforms used for online learning, the model of class, recorded versus online interaction, duration of online lectures, and students' and teachers' perceptions of online learning. We retrieved 38 records; only seven articles studied online education methods related to the pandemic and social distancing rules. The most frequently used online platform was Zoom (R). The studies examined both synchronous and asynchronous approaches. There was no evidence regarding duration and students' and teachers' attitude. This study suggests that the online learning shift was feasible; however, because of the nature of the education shift (pandemic), future studies must further analyze the educational structure.
- Lung Mechanics Over the Century: From Bench to Bedside and Back to Bench(2022) BISELLI, Paolo Jose Cesare; LOPES, Fernanda Degobbi Tenorio Quirino Dos Santos; RIGHETTI, Renato Fraga; MORIYA, Henrique Takachi; TIBERIO, Iolanda Ftima Lopes Calvo; MARTINS, Milton ArrudaLung physiology research advanced significantly over the last 100 years. Respiratory mechanics applied to animal models of lung disease extended the knowledge of the workings of respiratory system. In human research, a better understanding of respiratory mechanics has contributed to development of mechanical ventilators. In this review, we explore the use of respiratory mechanics in basic science to investigate asthma and chronic obstructive pulmonary disease (COPD). We also discuss the use of lung mechanics in clinical care and its role on the development of modern mechanical ventilators. Additionally, we analyse some bench-developed technologies that are not in widespread use in the present but can become part of the clinical arsenal in the future. Finally, we explore some of the difficult questions that intensive care doctors still face when managing respiratory failure. Bringing back these questions to bench can help to solve them. Interaction between basic and translational science and human subject investigation can be very rewarding, as in the conceptualization of ""Lung Protective Ventilation"" principles. We expect this interaction to expand further generating new treatments and managing strategies for patients with respiratory disease.
- Analysis of respiratory mechanics in animal models: Its use in understanding lung behavior in emphysema and asthma(2019) BISELLI, P.J.C.; KOHLER, J. Benini; RIGHETTI, R.; TIBéRIO, I. de Fátima Lopes Calvo; MARTINS, M. de Arruda; LOPES, F. Degobbi Tenorio Quirino dos SantosRespiratory mechanics assessment in animal models of respiratory diseases is considered a reliable tool to understand how structural changes impact lung function. Mathematical models, such as the equation of motion and the constant-phase model are used to describe the properties of the respiratory system. The equation of motion is valued because it is relatively simple to apply and describes the respiratory systems with few parameters. The constant-phase model is more complex but provides more detailed information about different lung compartments. In this review, we summarize how respiratory mechanics have been used to describe lung behavior as well as how these measurements reflect the progression of structural changes caused by emphysema and asthma in animal models. © 2019 Elsevier Ltd
- Th17/Treg Imbalance in Chronic Obstructive Pulmonary Disease: Clinical and Experimental Evidence(2021) LOURENCO, Juliana Dias; ITO, Juliana Tiyaki; MARTINS, Milton de Arruda; TIBERIO, Iolanda de Fatima Lopes Calvo; LOPES, Fernanda Degobbi Tenorio Quirino dos SantosThe imbalance between pro- and anti-inflammatory immune responses mediated by Th17 and Treg cells is deeply involved in the development and progression of inflammation in chronic obstructive pulmonary disease (COPD). Several clinical and experimental studies have described the Th17/Treg imbalance in COPD progression. Due to its importance, many studies have also evaluated the effect of different treatments targeting Th17/Treg cells. However, discrepant results have been observed among different lung compartments, different COPD stages or local and systemic markers. Thus, the data must be carefully examined. In this context, this review explores and summarizes the recent outcomes of Th17/Treg imbalance in COPD development and progression in clinical, experimental and in vitro studies.