Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575 [Categoria DeCS]
Referências encontradas : 208 [refinar]
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  1 / 208 MEDLINE  
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[PMID]:28985561
[Au] Autor:Bowman JL; Kohchi T; Yamato KT; Jenkins J; Shu S; Ishizaki K; Yamaoka S; Nishihama R; Nakamura Y; Berger F; Adam C; Aki SS; Althoff F; Araki T; Arteaga-Vazquez MA; Balasubrmanian S; Barry K; Bauer D; Boehm CR; Briginshaw L; Caballero-Perez J; Catarino B; Chen F; Chiyoda S; Chovatia M; Davies KM; Delmans M; Demura T; Dierschke T; Dolan L; Dorantes-Acosta AE; Eklund DM; Florent SN; Flores-Sandoval E; Fujiyama A; Fukuzawa H; Galik B; Grimanelli D; Grimwood J; Grossniklaus U; Hamada T; Haseloff J; Hetherington AJ; Higo A; Hirakawa Y; Hundley HN; Ikeda Y; Inoue K; Inoue SI; Ishida S
[Ad] Endereço:School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia. Electronic address: john.bowman@monash.edu.
[Ti] Título:Insights into Land Plant Evolution Garnered from the Marchantia polymorpha Genome.
[So] Source:Cell;171(2):287-304.e15, 2017 Oct 05.
[Is] ISSN:1097-4172
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The evolution of land flora transformed the terrestrial environment. Land plants evolved from an ancestral charophycean alga from which they inherited developmental, biochemical, and cell biological attributes. Additional biochemical and physiological adaptations to land, and a life cycle with an alternation between multicellular haploid and diploid generations that facilitated efficient dispersal of desiccation tolerant spores, evolved in the ancestral land plant. We analyzed the genome of the liverwort Marchantia polymorpha, a member of a basal land plant lineage. Relative to charophycean algae, land plant genomes are characterized by genes encoding novel biochemical pathways, new phytohormone signaling pathways (notably auxin), expanded repertoires of signaling pathways, and increased diversity in some transcription factor families. Compared with other sequenced land plants, M. polymorpha exhibits low genetic redundancy in most regulatory pathways, with this portion of its genome resembling that predicted for the ancestral land plant. PAPERCLIP.
[Mh] Termos MeSH primário: Evolução Biológica
Embriófitas/genética
Genoma de Planta
Marchantia/genética
[Mh] Termos MeSH secundário: Adaptação Biológica
Embriófitas/fisiologia
Regulação da Expressão Gênica de Plantas
Marchantia/fisiologia
Anotação de Sequência Molecular
Transdução de Sinais
Transcrição Genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171026
[Lr] Data última revisão:
171026
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171007
[St] Status:MEDLINE


  2 / 208 MEDLINE  
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[PMID]:28985556
[Au] Autor:Delwiche CF; Goodman CA; Chang C
[Ad] Endereço:Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA. Electronic address: delwiche@umd.edu.
[Ti] Título:Land Plant Model Systems Branch Out.
[So] Source:Cell;171(2):265-266, 2017 10 05.
[Is] ISSN:1097-4172
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The genome of the liverwort Marchantia polymorpha is an important step toward development of a new plant model system (Bowman et al., 2017). Liverworts may be the sister taxon to all other land plants, and the genome shows features that illuminate the ancestor of all land plants and give insights into how plant systems function and evolved.
[Mh] Termos MeSH primário: Embriófitas
Marchantia/genética
[Mh] Termos MeSH secundário: Plantas
[Pt] Tipo de publicação:JOURNAL ARTICLE; COMMENT
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171026
[Lr] Data última revisão:
171026
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171007
[St] Status:MEDLINE


  3 / 208 MEDLINE  
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[PMID]:28382982
[Au] Autor:Yakir D
[Ad] Endereço:Department of Earth &Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel.
[Ti] Título:Biogeochemistry: Large rise in carbon uptake by land plants.
[So] Source:Nature;544(7648):39-40, 2017 04 05.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Carbono
Solo
[Mh] Termos MeSH secundário: Ecossistema
Embriófitas
Plantas
[Pt] Tipo de publicação:NEWS; COMMENT
[Nm] Nome de substância:
0 (Soil); 7440-44-0 (Carbon)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE
[do] DOI:10.1038/544039a


  4 / 208 MEDLINE  
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[PMID]:28351683
[Au] Autor:Senathilake KS; Karunanayake EH; Samarakoon SR; Tennekoon KH; de Silva ED; Adhikari A
[Ad] Endereço:Institute of Biochemistry, Molecular Biology and Biotechnology, University of Colombo, Colombo 03, Sri Lanka.
[Ti] Título:Oleanolic acid from antifilarial triterpene saponins of Dipterocarpus zeylanicus induces oxidative stress and apoptosis in filarial parasite Setaria digitata in vitro.
[So] Source:Exp Parasitol;177:13-21, 2017 Jun.
[Is] ISSN:1090-2449
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Absence of a drug that kills adult filarial parasites remains the major challenge in eliminating human lymphatic filariasis (LF); the second leading cause of long-term and permanent disability. Thus, the discovery of novel antifilarial natural products with potent adulticidal activity is an urgent need. In the present study, methanol extracts of leaves, bark and winged seeds of Dipterocarpus zeylanicus (Dipterocarpaceae) were investigated for macro and microfilaricidal activity. Two antifilarial triterpene saponins were isolated from winged seed extracts by bioactivity guided chromatographic separation and identified using Nuclear Magnetic Resonance and mass spectroscopic analysis as oleanolic acid 3-O-ß-D- glucopyranoside (1) (IC50 = 20.54 µM for adult worms, 19.71 µM for microfilariae ) and oleanolic acid 3-O-α-L-arabinopyranoside (2) (IC50 = 29.02 µM for adult worms, 25.99 µM for microfilariae). Acid hydrolysis of both compounds yielded oleanolic acid (3) which was non or least toxic to human peripheral blood mono nuclear cells (Selectivity index = >10) while retaining similar macrofilaricidal (IC50 = 38.4 µM) and microfilaricidal (IC50 = 35.6 µM) activities. In adult female worms treated with 50 and 100 µM doses of oleanolic acid, condensation of nuclear DNA, apoptotic body formation and tissue damage was observed by using Hoechst 33342 staining, TUNEL assay and Hematoxylin and Eosin staining respectively. A dose dependent increase in caspase 3/CED3 activity and decrease in total protein content were also observed in these parasites. A dose dependant DNA fragmentation was observed in adult parasites and microfilariae. Decreased levels of reduced glutathione (GSH) and elevated levels of glutathione S transferase (GST), superoxide dismutase (SOD) and reactive oxygen species (ROS) were also observed in parasites treated with oleanolic acid indicating an oxidative stress mediated apoptotic event. Compound 3/oleanolic acid was thus identified as a potent and safe antifilarial compound in vitro.
[Mh] Termos MeSH primário: Apoptose/efeitos dos fármacos
Embriófitas/química
Ácido Oleanólico/farmacologia
Estresse Oxidativo/efeitos dos fármacos
Saponinas/química
Setaria (Nematoide)/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Caspase 3/metabolismo
Fragmentação do DNA/efeitos dos fármacos
Relação Dose-Resposta a Droga
Feminino
Marcação In Situ das Extremidades Cortadas
Concentração Inibidora 50
Dose Letal Mediana
Ácido Oleanólico/isolamento & purificação
Casca de Planta/química
Extratos Vegetais/isolamento & purificação
Extratos Vegetais/farmacologia
Folhas de Planta/química
Espécies Reativas de Oxigênio/metabolismo
Sementes/química
Setaria (Nematoide)/citologia
Setaria (Nematoide)/metabolismo
Setaríase/tratamento farmacológico
Setaríase/parasitologia
Coloração e Rotulagem
Triterpenos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Extracts); 0 (Reactive Oxygen Species); 0 (Saponins); 0 (Triterpenes); 6SMK8R7TGJ (Oleanolic Acid); EC 3.4.22.- (Caspase 3)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170620
[Lr] Data última revisão:
170620
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170330
[St] Status:MEDLINE


  5 / 208 MEDLINE  
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[PMID]:28131343
[Au] Autor:Verdaguer D; Jansen MA; Llorens L; Morales LO; Neugart S
[Ad] Endereço:Environmental Sciences Department, Faculty of Sciences, University of Girona, Campus de Montilivi, C/Maria Aurèlia Capmany I Farnés, 69, E-17003 Girona, Spain. Electronic address: dolors.verdaguer@udg.edu.
[Ti] Título:UV-A radiation effects on higher plants: Exploring the known unknown.
[So] Source:Plant Sci;255:72-81, 2017 Feb.
[Is] ISSN:1873-2259
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:Ultraviolet-A radiation (UV-A: 315-400nm) is a component of solar radiation that exerts a wide range of physiological responses in plants. Currently, field attenuation experiments are the most reliable source of information on the effects of UV-A. Common plant responses to UV-A include both inhibitory and stimulatory effects on biomass accumulation and morphology. UV-A effects on biomass accumulation can differ from those on root: shoot ratio, and distinct responses are described for different leaf tissues. Inhibitory and enhancing effects of UV-A on photosynthesis are also analysed, as well as activation of photoprotective responses, including UV-absorbing pigments. UV-A-induced leaf flavonoids are highly compound-specific and species-dependent. Many of the effects on growth and development exerted by UV-A are distinct to those triggered by UV-B and vary considerably in terms of the direction the response takes. Such differences may reflect diverse UV-perception mechanisms with multiple photoreceptors operating in the UV-A range and/or variations in the experimental approaches used. This review highlights a role that various photoreceptors (UVR8, phototropins, phytochromes and cryptochromes) may play in plant responses to UV-A when dose, wavelength and other conditions are taken into account.
[Mh] Termos MeSH primário: Embriófitas/efeitos da radiação
Fotorreceptores de Plantas/efeitos da radiação
Fotossíntese
Estruturas Vegetais/efeitos da radiação
Raios Ultravioleta
[Mh] Termos MeSH secundário: Biomassa
Embriófitas/crescimento & desenvolvimento
Embriófitas/metabolismo
Flavonoides/metabolismo
Fotorreceptores de Plantas/metabolismo
Pigmentos Biológicos/metabolismo
Estruturas Vegetais/crescimento & desenvolvimento
Estruturas Vegetais/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Flavonoids); 0 (Photoreceptors, Plant); 0 (Pigments, Biological)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170414
[Lr] Data última revisão:
170414
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170130
[St] Status:MEDLINE


  6 / 208 MEDLINE  
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[PMID]:28093875
[Au] Autor:Sussmilch FC; Brodribb TJ; McAdam SA
[Ad] Endereço:School of Biological Sciences, University of Tasmania, Hobart, Tasmania, Australia.
[Ti] Título:What are the evolutionary origins of stomatal responses to abscisic acid in land plants?
[So] Source:J Integr Plant Biol;59(4):240-260, 2017 Apr.
[Is] ISSN:1744-7909
[Cp] País de publicação:China (Republic : 1949- )
[La] Idioma:eng
[Ab] Resumo:The evolution of active stomatal closure in response to leaf water deficit, mediated by the hormone abscisic acid (ABA), has been the subject of recent debate. Two different models for the timing of the evolution of this response recur in the literature. A single-step model for stomatal control suggests that stomata evolved active, ABA-mediated control of stomatal aperture, when these structures first appeared, prior to the divergence of bryophyte and vascular plant lineages. In contrast, a gradualistic model for stomatal control proposes that the most basal vascular plant stomata responded passively to changes in leaf water status. This model suggests that active ABA-driven mechanisms for stomatal responses to water status instead evolved after the divergence of seed plants, culminating in the complex, ABA-mediated responses observed in modern angiosperms. Here we review the findings that form the basis for these two models, including recent work that provides critical molecular insights into resolving this intriguing debate, and find strong evidence to support a gradualistic model for stomatal evolution.
[Mh] Termos MeSH primário: Ácido Abscísico/farmacologia
Evolução Biológica
Embriófitas/fisiologia
Estômatos de Plantas/fisiologia
[Mh] Termos MeSH secundário: Modelos Biológicos
Estômatos de Plantas/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
72S9A8J5GW (Abscisic Acid)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170629
[Lr] Data última revisão:
170629
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170118
[St] Status:MEDLINE
[do] DOI:10.1111/jipb.12523


  7 / 208 MEDLINE  
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[PMID]:28068352
[Au] Autor:Faltyn A; Jakubska-Busse A; Jarzembowski P; Procków J
[Ad] Endereço:Department of Plant Biology, Institute of Biology, Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland.
[Ti] Título:Juncus quartinianus (Juncaceae, sect. Ozophyllum): A Neglected Species from the Horn of Africa and Its Re-Description Based on Morphological SEM Studies.
[So] Source:PLoS One;12(1):e0167838, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Juncus quartinianus (Juncaceae sect. Ozophyllum) was described by Richard in 1851 from Ethiopia. Some authors have treated this species as a synonym of J. fontanesii and others as a synonym of J. oxycarpus. Based on morphological analyses of flowers, fruit and seeds, we propose to restore J. quartinianus as a distinct species from both these taxa. Its detailed re-description and an identification key to the morphologically similar species of Juncus sect. Ozophyllum are provided.
[Mh] Termos MeSH primário: Embriófitas/classificação
[Mh] Termos MeSH secundário: África
Embriófitas/anatomia & histologia
Embriófitas/ultraestrutura
Sementes/anatomia & histologia
Sementes/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170110
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0167838


  8 / 208 MEDLINE  
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[PMID]:27988226
[Au] Autor:Giongo JL; Vaucher RA; Da Silva AS; Oliveira CB; de Mattos CB; Baldissera MD; Sagrillo MR; Monteiro SG; Custódio DL; Souza de Matos M; Sampaio PT; Teixeira HF; Koester LS; da Veiga Junior VF
[Ad] Endereço:Laboratório de Desenvolvimento Galênico, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Regional Integrada do Alto Uruguai e das Missões (URI), S
[Ti] Título:Trypanocidal activity of the compounds present in Aniba canelilla oil against Trypanosoma evansi and its effects on viability of lymphocytes.
[So] Source:Microb Pathog;103:13-18, 2017 Feb.
[Is] ISSN:1096-1208
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Aniba canelilla (H.B.K.) Mez, popularly known as "casca-preciosa" (precious bark), is a plant of the Lauraceae family, widely distributed in the Amazon region. Its major constituent is 1-nitro-2-phenylethane, a rare molecule in plants which is responsible for this plant's cinnamon scent. The present study aimed to report the chemical characterization of the oil extracted from Aniba canelilla using gas-chromatography/mass spectrometry and to assess its in vitro trypanocidal activity against Trypanosoma evansi, a prevalent haemoflagellate parasite that affects a broad range of mammal species in Africa, Asia and South America. The oil presented 1-nitro-2-phenylethane (83.68%) and methyleugenol (14.83%) as the two major components. The essential oil as well as both major compounds were shown to exert trypanocidal effect. Methyleugenol was slightly more active than 1-nitro-2-phenylethane. In vitro studies showed that the oil extracted from the stems of A. canelilla may be regarded as a potential natural treatment for trypanosomosis, once proven their in vivo action, may be an interesting alternative in the treatment of infected animals with T. evansi.
[Mh] Termos MeSH primário: Embriófitas/química
Linfócitos/efeitos dos fármacos
Extratos Vegetais/farmacologia
Óleos Vegetais/farmacologia
Tripanossomicidas/farmacologia
Trypanosoma/efeitos dos fármacos
[Mh] Termos MeSH secundário: Sobrevivência Celular/efeitos dos fármacos
Cromatografia Gasosa
Seres Humanos
Óleos Voláteis/química
Óleos Voláteis/farmacologia
Extratos Vegetais/química
Óleos Vegetais/química
Tripanossomicidas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Oils, Volatile); 0 (Plant Extracts); 0 (Plant Oils); 0 (Trypanocidal Agents)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170406
[Lr] Data última revisão:
170406
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161219
[St] Status:MEDLINE


  9 / 208 MEDLINE  
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[PMID]:27918941
[Au] Autor:Cho H; Dang TV; Hwang I
[Ad] Endereço:Department of Life Sciences, POSTECH Biotech Center, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea.
[Ti] Título:Emergence of plant vascular system: roles of hormonal and non-hormonal regulatory networks.
[So] Source:Curr Opin Plant Biol;35:91-97, 2017 Feb.
[Is] ISSN:1879-0356
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The divergence of land plants followed by vascular plants has entirely changed the terrestrial ecology. The vascular system is a prerequisite for this evolutionary event, providing upright stature and communication for sink demand-source capacity and facilitating the development of plants and colonization over a wide range of environmental habitats. Various hormonal and non-hormonal regulatory networks have been identified and reviewed as key processes for vascular formation; however, how these factors have evolutionarily emerged and interconnected to trigger the emergence of the vascular system still remains elusive. Here, to understand the intricacy of cross-talks among these factors, we highlight how core hormonal signaling and transcriptional networks are coalesced into the appearance of vascular plants during evolution.
[Mh] Termos MeSH primário: Evolução Biológica
Embriófitas/genética
Regulação da Expressão Gênica de Plantas
Redes Reguladoras de Genes
Reguladores de Crescimento de Planta/genética
[Mh] Termos MeSH secundário: Embriófitas/metabolismo
Evolução Molecular
Reguladores de Crescimento de Planta/metabolismo
Transdução de Sinais
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Plant Growth Regulators)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161206
[St] Status:MEDLINE


  10 / 208 MEDLINE  
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[PMID]:27595342
[Au] Autor:Ishizaki K
[Ad] Endereço:a Department of Biology , Graduate School of Science, Kobe University , Kobe , Japan.
[Ti] Título:Evolution of land plants: insights from molecular studies on basal lineages.
[So] Source:Biosci Biotechnol Biochem;81(1):73-80, 2017 Jan.
[Is] ISSN:1347-6947
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The invasion of the land by plants, or terrestrialization, was one of the most critical events in the history of the Earth. The evolution of land plants included significant transformations in body plans: the emergence of a multicellular diploid sporophyte, transition from gametophyte-dominant to sporophyte-dominant life histories, and development of many specialized tissues and organs, such as stomata, vascular tissues, roots, leaves, seeds, and flowers. Recent advances in molecular genetics in two model basal plants, bryophytes Physcomitrella patens and Marchantia polymorpha, have begun to provide answers to several key questions regarding land plant evolution. This paper discusses the evolution of the genes and regulatory mechanisms that helped drive such significant morphological innovations among land-based plants.
[Mh] Termos MeSH primário: Embriófitas/genética
Evolução Molecular
[Mh] Termos MeSH secundário: Embriófitas/metabolismo
Espécies Introduzidas
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170131
[Lr] Data última revisão:
170131
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160906
[St] Status:MEDLINE



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