NATHALIA MONTOURO PINHEIRO MENEGASSO
Projetos de Pesquisa
Unidades Organizacionais
LIM/20 - Laboratório de Terapêutica Experimental, Hospital das Clínicas, Faculdade de Medicina
16 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 16
- Effects of Eugenol and Dehydrodieugenol B from Nectandra leucantha against Lipopolysaccharide (LPS)-Induced Experimental Acute Lung Inflammation(2021) I, Marcia Bittencourt-Mernak; PINHEIRO, Nathalia M.; SILVA, Rafael C. da; PONCI, Vitor; BANZATO, Rosana; PINHEIRO, Aruana J. M. C. R.; OLIVO, Clarice R.; TIBERIO, Iolanda F. L. C.; LIMA NETO, Lidio G.; SANTANA, Fernanda P. R.; LAGO, Joao H. G.; PRADO, Carla M.Acute lung injury (ALI) is an important public health problem. The present work investigated whether dehydrodieugenol B treatment, a compound isolated from Brazilian plant Nectandra leucantha (Lauraceae), modulates experimental ALI and compared the observed effects to eugenol. Effects of dehydrodieugenol B in vitro in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells were evaluated. The lung and systemic inflammatory profile, lung function, and possible mechanisms involved in BALB/C male mice (6-8 weeks) with ALI induced by LPS instillation (5 mg/kg) was assayed. Dehydrodieugenol B did not affect the cell viability and inhibited the increase in NO release and IL-1 beta and IL-6 gene expression induced by LPS. In vivo, both compounds reduced lung edema, inflammatory cells, and the IL-6 and IL-1 beta levels in bronchoalveolar lavage fluid, as well as reduced inflammatory cell infiltration and those positive to iNOS, MMP-9, and TIMP-1, and reduced the collagen content and the 8-isoprostane expression in lung tissue. Eugenol and dehydrodieugenol B also inhibited the phosphorylation of Jc-Jun-NH2 terminal Kinase (JNK), a signaling protein involved in the MAPKinase pathway. There was no effect of these compounds in lung function. Therefore, eugenol and dehydrodieugenol B ameliorates several features of experimental ALI and could be considered as a pharmacological tool to ameliorate acute lung inflammation.
- Alpha-7 nicotinic receptor stimulation reduces airway inflammation in a murine model of asthma(2016) SANTANA, Fernanda Paula Roncon; MIRANDA, Claudia Jeane Claudino de Pontes; PINHEIRO, Nathalia Montouro; PERINI, Adenir; CAPERUTO, Luciana Chagas; TIBERIO, Iolanda de Fatima Lopes Calvo; PRADO, Marco Antonio Maximo; MARTINS, Milton de Arruda; PRADO, Vania Ferreira; PRADO, Carla Maximo
- Nicotinic alpha-7 receptor stimulation (alpha 7nAChR) inhibited NF-kB/STAT3/SOCS3 pathways in a murine model of asthma(2017) SANTANA, Fernanda Paula Roncon; TOMARI, Sergio Festa; MIRANDA, Claudia Jeane Claudino de Pontes; PINHEIRO, Nathalia Montouro; CAPERUTO, Luciana Chagas; TIBERIO, Iolanda de Fatima Lopes Calvo; PRADO, Marco Antonio Maximo; MARTINS, Milton de Arruda; PRADO, Vania Ferreira; PRADO, Carla Maximo
- Effects of VAChT reduction on the time course of lung inflammation in mice with acute lung injury(2016) PINHEIRO, Nathalia; SANTANA, Fernanda; CAPERUTO, Luciana; TIBERIO, Iolanda; PRADO, Vania; PRADO, Marco Antonio; MARTINS, Milton; PRADO, Carla
- The role of monoterpenes derived from essential oils in lung alteration in a model of emphysema(2016) PEREIRA, Ellen; GUERREIRO, Marina; SANTANA, Fernanda; PINHEIRO, Nathalia; CAPELLO, Tabata; LOPES, Fernanda; OLIVO, Clarice; TIBERIO, Iolanda; MARTINS, Milton; LAGO, Joao; PRADO, Carla
conferenceObject Lung inflammation was attenuated by sakuranetin treatment in a model of acute lung injury(2014) MERNAK, Marcia; SANTANA, Fernanda; PINHEIRO, Nathalia; SARAIVA-RAMANHOLO, Beatriz; GRECCO, Simone; TIBERIO, Iolanda; MARTINS, Milton; LAGO, Joao; PRADO, Carla- Prophylactic and therapeutic treatment with the flavonone sakuranetin ameliorates LPS-induced acute lung injury(2017) BITTENCOURT-MERNAK, Marcia Isabel; PINHEIRO, Nathalia M.; SANTANA, Fernanda P. R.; GUERREIRO, Marina P.; SARAIVA-ROMANHOLO, Beatriz M.; GRECCO, Simone S.; CAPERUTO, Luciana C.; FELIZARDO, Raphael J. F.; CAMARA, Niels O. S.; TIBERIO, Iolanda F. L. C.; MARTINS, Mlton A.; LAGO, Joao Henrique G.; PRADO, Carla M.Sakuranetin is the main isolate flavonoid from Baccharis retusa (Asteraceae) leaves and exhibits anti-inflammatory and antioxidative activities. Acute respiratory distress syndrome is an acute failure of the respiratory system for which effective treatment is urgently necessary. This study investigated the preventive and therapeutic effects of sakuranetin on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. Animals were treated with intranasal sakuranetin 30 min before or 6 h after instillation of LPS. Twenty-four hours after ALI was induced, lung function, inflammation, macrophages population markers, collagen fiber deposition, the extent of oxidative stress, and the expression of matrix metalloprotease-9 (MMP-9), tissue inhibitor of MMP- 9 (TIMP-1) and NF-kB were evaluated. The animals began to show lung alterations 6 h after LPS instillation, and these changes persisted until 24 h after LPS administration. Preventive and therapeutic treatment with sakuranetin reduced the neutrophils in the peripheral blood and in the bronchial alveolar lavage. Sakuranetin treatment also reduced macrophage populations, particularly that of M1-like macrophages. In addition, sakurnaetin treatment reduced keratinocyte-derived chemokines (IL-8 homolog) and NF-kB levels, collagen fiber formation, MMM-9 and TIMP-1-positive cells, and oxidative stress in lung tissues compared with LPS animals treated with vehicle. Finally, sakuranetin treatment also reduced total protein, and the levels of TNF-alpha and IL-1 beta in the lung. This study shows that sakuranetin prevented and reduced pulmonary inflammation induced by LPS. Because sakuranetin modulates oxidative stress, the NF-kB pathway, and lung function, it may constitute a novel therapeutic candidate to prevent and treat ALI.
- Lung Edema and Mortality Induced by Intestinal Ischemia and Reperfusion Is Regulated by VAChT Levels in Female Mice(2021) SANTANA, Fernanda P. R.; RICARDO-DA-SILVA, Fernanda Y.; FANTOZZI, Evelyn T.; PINHEIRO, Nathalia M.; TIBERIO, Iolanda F. L. C.; MOREIRA, Luiz Felipe Pinho; PRADO, Marco Antonio M.; PRADO, Vania F.; TAVARES-DE-LIMA, Wothan; PRADO, Carla Maximo; BREITHAUPT-FALOPPA, Ana CristinaAcute lung injury induced by intestinal ischemia/reperfusion (I/R) is a relevant clinical condition. Acetylcholine (ACh) and the alpha 7 nicotinic ACh receptor (nAChR alpha-7) are involved in the control of inflammation. Mice with reduced levels of the vesicular ACh transporter (VAChT), a protein responsible for controlling ACh release, were used to test the involvement of cholinergic signaling in lung inflammation due to intestinal I/R. Female mice with reduced levels of VAChT (VAChT-KDHOM) or wild-type littermate controls (WT) were submitted to intestinal I/R followed by 2 h of reperfusion. Mortality, vascular permeability, and recruitment of inflammatory cells into the lung were investigated. Parts of mice were submitted to ovariectomy (OVx) to study the effect of sex hormones or treated with PNU-282,987 (nAChR alpha-7 agonist). A total of 43.4% of VAChT-KDHOM-I/R mice died in the reperfusion period compared to 5.2% of WT I/R mice. The I/R increased lung inflammation in both genotypes. In VAChT-KDHOM mice, I/R increased vascular permeability and decreased the release of cytokines in the lung compared to WT I/R mice. Ovariectomy reduced lung inflammation and permeability compared to non-OVx, but it did not avoid mortality in VAChT-KDHOM-I/R mice. PNU treatment reduced lung permeability, increased the release of proinflammatory cytokines and the myeloperoxidase activity in the lungs, and prevented the increased mortality observed in VAChT-KDHOM mice. Cholinergic signaling is an important component of the lung protector response against intestinal I/R injury. Decreased cholinergic signaling seems to increase pulmonary edema and dysfunctional cytokine release that increased mortality, which can be prevented by increasing activation of nAChR alpha-7.
conferenceObject Essential oils reduced lung inflammation in a model of acute lung injury(2014) GUERREIRO, Marina; MERNAK, Marcia; SANTANA, Fernanda; PINHEIRO, Nathalia; SARAIVA-RAMANHOLO, Beatriz; CAPELLO, Tabata; TIBERIO, Iolanda; MARTINS, Milton; LAGO, Joao; PRADO, Carla- VAChT reduction increased mortality probably due to alveolar edema in a model of lung injury induced by intestinal isquemia/reperfusion in female mice(2017) SANTANA, Fernanda Paula Roncon; FANTOZZI, Evelyn; SILVA, Fernanda Yamamoto Ricardo da; PINHEIRO, Nathalia Montouro; TIBERIO, Iolanda de Fatima Lopes Calvo; MARTINS, Milton de Arruda; PRADO, Vania Ferreira; PRADO, Marco Antonio Maximo; LIMA, Wothan Tavares de; FALOPPA, Ana Cristina Breithaupt; PRADO, Carla Maximo