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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
16/03/2020 |
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Data da última atualização: |
24/05/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FURTADO NETO, A. T.; MOURA, J. M. S. de; SILVA, R. da; OLIVEIRA JUNIOR, R. C. de; GATTI, L. V.; RÖCKMANN, T. |
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Afiliação: |
ALIRIO TENÓRIO FURTADO NETO, UFOPA; JOSÉ MAURO SOUSA DE MOURA, UFOPA; RODRIGO DA SILVA, UFOPA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; LUCIANA VANNI GATTI, INPE; THOMAS RÖCKMANN, UNIVERSIDADE DE UTRECHT. |
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Título: |
Produção e fluxo de metano na Floresta Nacional do Tapajós. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Revista Brasileira de Meteorologia, v. 34, n. 4, p. 585-596, 2019. |
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DOI: |
http://dx.doi.org/10.1590/0102-7786344071 |
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Idioma: |
Português |
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Conteúdo: |
O metano é o segundo gás de efeito estufa e sua concentração na atmosfera aumentou 259% desde 1750. A média global da fração molar de CH4 atingiu um novo recorde de 1813 ± 2 ppb em 2011. Este trabalho objetiva quantificar a concentração e fluxo de metano no perfil vertical da floresta primária tropical (Floresta Nacional do Tapajós), assim como, determinar a emissão de metano na interface solo-atmosfera durante o período chuvoso e de estiagem para o ano de 2012. Amostras de ar foram coletadas in situ diretamente do solo através do uso de câmaras estáticas e no perfil vertical da floresta em três alturas diferentes (2 m, 16 m e 36 m) e acima da copa (63 m) através do uso da torre micrometeorológica de 65 m. Posteriormente, as amostras de ar foram analisadas por cromatografia gasosa. A concentração de metano na estratificação vertical da vegetação foi de 1,866 ± 0,038 ppm e o fluxo foi ~ 15,50 mg de CH4.m-2 d-1 e a emissão de metano no solo foi 0,45 ± 0,71 mg de CH4 m-2 d-1. Portanto, no período de estudo o ecossistema florestal de terra-firme atuou como fonte de CH4 para atmosfera. |
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Palavras-Chave: |
Ciclo biogeoquímico; Ecossistema florestal; Emissão de metano; Floresta Nacional do Tapajós. |
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Thesagro: |
Ecossistema; Metano. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/211863/1/0102-7786-rbmet-34-04-0071.pdf
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Marc: |
LEADER 01943naa a2200265 a 4500
001 2121252
005 2021-05-24
008 2019 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/0102-7786344071$2DOI
100 1 $aFURTADO NETO, A. T.
245 $aProdução e fluxo de metano na Floresta Nacional do Tapajós.$h[electronic resource]
260 $c2019
520 $aO metano é o segundo gás de efeito estufa e sua concentração na atmosfera aumentou 259% desde 1750. A média global da fração molar de CH4 atingiu um novo recorde de 1813 ± 2 ppb em 2011. Este trabalho objetiva quantificar a concentração e fluxo de metano no perfil vertical da floresta primária tropical (Floresta Nacional do Tapajós), assim como, determinar a emissão de metano na interface solo-atmosfera durante o período chuvoso e de estiagem para o ano de 2012. Amostras de ar foram coletadas in situ diretamente do solo através do uso de câmaras estáticas e no perfil vertical da floresta em três alturas diferentes (2 m, 16 m e 36 m) e acima da copa (63 m) através do uso da torre micrometeorológica de 65 m. Posteriormente, as amostras de ar foram analisadas por cromatografia gasosa. A concentração de metano na estratificação vertical da vegetação foi de 1,866 ± 0,038 ppm e o fluxo foi ~ 15,50 mg de CH4.m-2 d-1 e a emissão de metano no solo foi 0,45 ± 0,71 mg de CH4 m-2 d-1. Portanto, no período de estudo o ecossistema florestal de terra-firme atuou como fonte de CH4 para atmosfera.
650 $aEcossistema
650 $aMetano
653 $aCiclo biogeoquímico
653 $aEcossistema florestal
653 $aEmissão de metano
653 $aFloresta Nacional do Tapajós
700 1 $aMOURA, J. M. S. de
700 1 $aSILVA, R. da
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aGATTI, L. V.
700 1 $aRÖCKMANN, T.
773 $tRevista Brasileira de Meteorologia$gv. 34, n. 4, p. 585-596, 2019.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
15/03/2019 |
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Data da última atualização: |
18/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SANTOS, R. de C. dos; BONAMINA, F.; PÉRICO, L. L.; RODRIGUES, V. P.; ZANATTA, A. C.; RODRIGUES, C. M.; SANNOMIYA, M.; RAMOS. M. A. dos S.; BONIFÁCIO, B. V.; BAUAB, T. M.; TAMASHIRO, J.; ROCHA, L. R. M. da; VILEGAS, W.; HIRUMA-LIMA, C. A. |
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Afiliação: |
Raquel de Cássia dos Santos; Flavia Bonamina; Larissa Lucena Périco; Vinícius Peixoto Rodrigues; Ana Caroline Zanatta; CLENILSON MARTINS RODRIGUES, CNPAE; Miriam Sannomiya; Matheus Aparecido dos Santos Ramos; Bruna Vidal Bonifácio; Taís Maria Bauab; Jorge Tamashiro; Lúcia Regina Machado da Rocha; Wagner Vilegas; Clelia Akiko Hiruma-Lima. |
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Título: |
Byrsonima intermedia A. Juss partitions promote gastroprotection against peptic ulcers and improve healing through antioxidant and antiinflammatory activities. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Biomedicine & Pharmacotherapy, v. 111, p. 1112-1123, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
Byrsonima intermedia is a species of bush popularly used to treat gastrointestinal disorders, such as gastric ulcers, gastritis, and diarrhea. Previous studies have revealed that the methanolic crude extract of B. intermedia leaves has gastroprotective and healing properties. In this new study, we specifically investigated two purified partitions, ethyl acetate (EtOAc) and water (AcoAq), obtained from the crude extract to characterize the antiulcer effects of these two partitions and the mechanisms of action of this medicinal plant. The healing effects of these partitions on the gastric and duodenal mucosa were assessed after ischemia-reperfusion (I/R) or acetic acidinduced injury. The involvement of tumor necrosis factor-alpha (TNF-alpha), interleukin 1β (IL-1β), interleukin 10 (IL-10), and myeloperoxidase (MPO) activity and glutathione (GSH) levels were determined. The antibacterial activity against Helicobacter pylori was evaluated using microdilution methods. The phytochemical analysis of AcoAq revealed a predominance of oligomeric proanthocyanidins and galloyl quinic esters, whereas EtOAc was found to contain concentrated flavonoids. Both partitions led to a significant reduction in gastric lesions, but AcoAq was more effective than EtOAc with regard to anti-Helicobacter pylori activity in addition to protecting the gastric mucosa against ethanol, non-steroidal anti-inflammatory drugs (NSAIDs) and duodenal mucosal damage induced by cysteamine. Additionally, both partitions were associated with a significant increase in gastric and duodenal healing and increased gastric mucosal GSH content after damage induced by acetic acid. On the other hand, after 6 days of treatment, EtOAc was more effective than AcoAq in ameliorating gastric damage upon initiation of the gastric I/R, which was accompanied by a significant reduction in the activity of gastric mucosal MPO, IL 1-β and TNFalpha, as well as an elevation in IL-10 and GSH content. These results demonstrate that the oligomeric proanthocyanidins and galloyl quinic esters present in AcoAq were more effective in the prevention of gastric and duodenal ulcers due to the antioxidant effects of these compounds, whereas the flavonoids present in EtOAc were more effective due to their anti-inflammatory activity on the gastric and duodenal tissue. All these results confirm that the rich phytochemical diversity of B. intermedia contributes to the pharmacological actions of this medicinal plant on the gastrointestinal tract in addition to its activity against H. pylori. MenosByrsonima intermedia is a species of bush popularly used to treat gastrointestinal disorders, such as gastric ulcers, gastritis, and diarrhea. Previous studies have revealed that the methanolic crude extract of B. intermedia leaves has gastroprotective and healing properties. In this new study, we specifically investigated two purified partitions, ethyl acetate (EtOAc) and water (AcoAq), obtained from the crude extract to characterize the antiulcer effects of these two partitions and the mechanisms of action of this medicinal plant. The healing effects of these partitions on the gastric and duodenal mucosa were assessed after ischemia-reperfusion (I/R) or acetic acidinduced injury. The involvement of tumor necrosis factor-alpha (TNF-alpha), interleukin 1β (IL-1β), interleukin 10 (IL-10), and myeloperoxidase (MPO) activity and glutathione (GSH) levels were determined. The antibacterial activity against Helicobacter pylori was evaluated using microdilution methods. The phytochemical analysis of AcoAq revealed a predominance of oligomeric proanthocyanidins and galloyl quinic esters, whereas EtOAc was found to contain concentrated flavonoids. Both partitions led to a significant reduction in gastric lesions, but AcoAq was more effective than EtOAc with regard to anti-Helicobacter pylori activity in addition to protecting the gastric mucosa against ethanol, non-steroidal anti-inflammatory drugs (NSAIDs) and duodenal mucosal damage induced by cysteamine. Additionally, bo... Mostrar Tudo |
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Palavras-Chave: |
Healing effect; Peptic ulcer. |
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Thesaurus NAL: |
Anti-inflammatory activity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/194314/1/CLENILSON-039-Biomedicine-and-Pharmacotherapy-V.111-Issue.3-2019-1112-1123.pdf
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Marc: |
LEADER 03557naa a2200313 a 4500
001 2107125
005 2019-11-18
008 2019 bl uuuu u00u1 u #d
100 1 $aSANTOS, R. de C. dos
245 $aByrsonima intermedia A. Juss partitions promote gastroprotection against peptic ulcers and improve healing through antioxidant and antiinflammatory activities.$h[electronic resource]
260 $c2019
520 $aByrsonima intermedia is a species of bush popularly used to treat gastrointestinal disorders, such as gastric ulcers, gastritis, and diarrhea. Previous studies have revealed that the methanolic crude extract of B. intermedia leaves has gastroprotective and healing properties. In this new study, we specifically investigated two purified partitions, ethyl acetate (EtOAc) and water (AcoAq), obtained from the crude extract to characterize the antiulcer effects of these two partitions and the mechanisms of action of this medicinal plant. The healing effects of these partitions on the gastric and duodenal mucosa were assessed after ischemia-reperfusion (I/R) or acetic acidinduced injury. The involvement of tumor necrosis factor-alpha (TNF-alpha), interleukin 1β (IL-1β), interleukin 10 (IL-10), and myeloperoxidase (MPO) activity and glutathione (GSH) levels were determined. The antibacterial activity against Helicobacter pylori was evaluated using microdilution methods. The phytochemical analysis of AcoAq revealed a predominance of oligomeric proanthocyanidins and galloyl quinic esters, whereas EtOAc was found to contain concentrated flavonoids. Both partitions led to a significant reduction in gastric lesions, but AcoAq was more effective than EtOAc with regard to anti-Helicobacter pylori activity in addition to protecting the gastric mucosa against ethanol, non-steroidal anti-inflammatory drugs (NSAIDs) and duodenal mucosal damage induced by cysteamine. Additionally, both partitions were associated with a significant increase in gastric and duodenal healing and increased gastric mucosal GSH content after damage induced by acetic acid. On the other hand, after 6 days of treatment, EtOAc was more effective than AcoAq in ameliorating gastric damage upon initiation of the gastric I/R, which was accompanied by a significant reduction in the activity of gastric mucosal MPO, IL 1-β and TNFalpha, as well as an elevation in IL-10 and GSH content. These results demonstrate that the oligomeric proanthocyanidins and galloyl quinic esters present in AcoAq were more effective in the prevention of gastric and duodenal ulcers due to the antioxidant effects of these compounds, whereas the flavonoids present in EtOAc were more effective due to their anti-inflammatory activity on the gastric and duodenal tissue. All these results confirm that the rich phytochemical diversity of B. intermedia contributes to the pharmacological actions of this medicinal plant on the gastrointestinal tract in addition to its activity against H. pylori.
650 $aAnti-inflammatory activity
653 $aHealing effect
653 $aPeptic ulcer
700 1 $aBONAMINA, F.
700 1 $aPÉRICO, L. L.
700 1 $aRODRIGUES, V. P.
700 1 $aZANATTA, A. C.
700 1 $aRODRIGUES, C. M.
700 1 $aSANNOMIYA, M.
700 1 $aRAMOS. M. A. dos S.
700 1 $aBONIFÁCIO, B. V.
700 1 $aBAUAB, T. M.
700 1 $aTAMASHIRO, J.
700 1 $aROCHA, L. R. M. da
700 1 $aVILEGAS, W.
700 1 $aHIRUMA-LIMA, C. A.
773 $tBiomedicine & Pharmacotherapy$gv. 111, p. 1112-1123, 2019.
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