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Pesquisa : B01.650.940.800.575.912.250.233 [Categoria DeCS]
Referências encontradas : 35 [refinar]
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[PMID]:28419924
[Au] Autor:Issaadi HM; Tsai YC; Chang FR; Hunyadi A
[Ad] Endereço:Institute of Pharmacognosy, University of Szeged, Eötvös str. 6, 6720, Szeged, Hungary.
[Ti] Título:Centrifugal partition chromatography in the isolation of minor ecdysteroids from Cyanotis arachnoidea.
[So] Source:J Chromatogr B Analyt Technol Biomed Life Sci;1054:44-49, 2017 Jun 01.
[Is] ISSN:1873-376X
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Phytoecdysteroids are known for their various beneficial bioactivities in mammals including a non-hormonal anabolic and adaptogenic effect. Cyanotis arachnoidea extracts are extensively utilized worldwide as ecdysteroid-rich materials for various purposes, e.g. food supplementation, use in agriculture and aquaculture, etc. Preparative chromatography of ecdysteroids requires extensive use of methods of different selectivity, and only a very limited number of papers are available on related application of modern liquid-liquid chromatographic techniques. In this work, a centrifugal partition chromatography (CPC) method was developed for the isolation of two minor ecdysteroids, dacryhainansterone and calonysterone, from a pre-purified commercial extract of Cyanotis arachnoidea. The biphasic solvent system was optimized by HPLC, and was composed of n-hexane - ethyl acetate - methanol - water (1:5:1:5, v/v/v/v). The isolated dacryhainansterone and calonysterone represented 99.1% and 99.7% purity, respectively. Calonysterone exerts a stronger effect on the protein kinase B (Akt) phosphorylation in mammalian skeletal muscle cells than the abundant 20-hydroxyecdysone, while no related data are available on dacryhainansterone. Despite their presence in food supplements, neither compound has appropriately been assessed for safety and efficacy. The reported method allows the gram scale isolation of these compounds, opening ways to their in-depth pharmacological investigation.
[Mh] Termos MeSH primário: Cromatografia Líquida de Alta Pressão/métodos
Commelinaceae/química
Ecdisteroides/isolamento & purificação
Extratos Vegetais/química
[Mh] Termos MeSH secundário: Acetatos/química
Centrifugação/métodos
Cromatografia de Fase Reversa/métodos
Ecdisteroides/análise
Hexanos/química
Metanol/química
Solventes/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (Ecdysteroids); 0 (Hexanes); 0 (Plant Extracts); 0 (Solvents); 2DDG612ED8 (n-hexane); 76845O8NMZ (ethyl acetate); Y4S76JWI15 (Methanol)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170606
[Lr] Data última revisão:
170606
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170419
[St] Status:MEDLINE


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[PMID]:27311979
[Au] Autor:Winiarczyk K; Gebura J
[Ad] Endereço:Department of Plant Anatomy and Cytology, Maria Curie e Sklodowska University, Akademicka 19, 20033, Lublin, Poland. krystyna.winiarczyk@umcs.pl.
[Ti] Título:Formation of a unique structure during microsporogenesis in Tinantia anomala (Commelinaceae) anthers.
[So] Source:Protoplasma;254(2):785-790, 2017 Mar.
[Is] ISSN:1615-6102
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:The analysis of microsporogenesis in Tinantia anomala revealed a unique ring-shaped structure assembling pollen grains into large aggregates. The heterogeneous ring was composed of several segments and was dominated by lipid compounds. Although the ring is a product of the tapetum, such a structure has not been described yet. The authors put forward some hypotheses for elucidation of the role of this structure in the process of male gametophyte formation.
[Mh] Termos MeSH primário: Commelinaceae/anatomia & histologia
Commelinaceae/fisiologia
Flores/anatomia & histologia
Flores/fisiologia
Gametogênese Vegetal
[Mh] Termos MeSH secundário: Commelinaceae/citologia
Commelinaceae/ultraestrutura
Flores/citologia
Flores/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170327
[Lr] Data última revisão:
170327
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160618
[St] Status:MEDLINE
[do] DOI:10.1007/s00709-016-0990-y


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[PMID]:27082647
[Au] Autor:Li D; Zhang Y; Cui Z; He L; Chen W; Meng Q; Ren L
[Ad] Endereço:State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, P. R. China.
[Ti] Título:Effects of Phytoecdysteroids (PEDS) Extracted from Cyanotis arachnoidea on Rumen Fermentation, Enzyme Activity and Microbial Efficiency in a Continuous-Culture System.
[So] Source:PLoS One;11(4):e0153584, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The objective of this study was to evaluate the effects of supplementation of phytoecdysteroids (PEDS) extracted from Cyanotis arachnoidea on rumen fermentation, enzymes activity and microbial efficiency in a dual flow continuous-culture system. A single-factor experimental design was used with twelve fermenters in 4 groups with 3 replicates each. Fermenters were incubated for a total of 7 days that included first 4 days for adaptation and last 3 days for sampling. PEDS was added at levels of zero (as control), 5, 10, and 15 mg/g of the substrate (DM). The results showed that increasing supplementation levels of PEDS resulted in incremental digestibility of dry matter (DMD) (quadratic, P = 0.001) and organic matter (OMD) (quadratic, P = 0.031), but unchanged digestibility of neutral detergent fiber (NDFD), crude protein (CPD) and acid detergent acid (ADFD). As supplementation levels of PEDS increased, there were decreased response in the concentration of ammonia nitrogen (NH3-N) (linear, P = 0.015) and increased response in molar proportions of butyrate (linear, P = 0.004), but unchanged response in total volatile fatty acid (TVFA) and the molar proportion of acetate and propionate, respectively. Increasing PEDS supplementation levels decreased the ratio of acetate to propionate (linear, P = 0.038), suggesting an alteration of rumen fermentation pattern occurring due to PEDS supplementation in the diet. Supplementation of PEDS significantly increased activities of glutamate dehydrogenase (quadratic, P = 0.001), alanine dehydrogenase (quadratic, P = 0.004), glutamate synthase (linear, P = 0.038), glutamine synthetase (quadratic, P = 0.011), respectively. There were no discernible differences in the activity of carboxymethyl cellulose (CMCase), xylanase and protease regardless of the treatments. The daily production of microbial nitrogen (linear, P = 0.002) and microbial efficiency (MOEEF) (linear, P = 0.001) increased linearly as supplementation levels of PEDS increased. The decreased response of fluid NH3-N and the increased response of MN indicated that PEDS positively increased the synthesis of microbial proteins.
[Mh] Termos MeSH primário: Bactérias/metabolismo
Commelinaceae/química
Técnicas de Cultura/métodos
Ecdisteroides/farmacologia
Enzimas/metabolismo
Fermentação/efeitos dos fármacos
Rúmen/metabolismo
[Mh] Termos MeSH secundário: Ração Animal
Fenômenos Fisiológicos da Nutrição Animal/efeitos dos fármacos
Animais
Bactérias/citologia
Bactérias/efeitos dos fármacos
Reatores Biológicos/microbiologia
Bovinos
Ecdisteroides/isolamento & purificação
Microbioma Gastrointestinal/efeitos dos fármacos
Microbioma Gastrointestinal/fisiologia
Fitosteróis/isolamento & purificação
Fitosteróis/farmacologia
Extratos Vegetais/química
Extratos Vegetais/farmacologia
Rúmen/efeitos dos fármacos
Rúmen/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Ecdysteroids); 0 (Enzymes); 0 (Phytosterols); 0 (Plant Extracts)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:160423
[Lr] Data última revisão:
160423
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160416
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0153584


  4 / 35 MEDLINE  
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[PMID]:26961770
[Au] Autor:Gebura J; Winiarczyk K
[Ad] Endereço:Department of Plant Anatomy and Cytology, Maria Curie-Sklodowska University, Akademicka 19, 20033, Lublin, Poland.
[Ti] Título:A study on calcium oxalate crystals in Tinantia anomala (Commelinaceae) with special reference to ultrastructural changes during anther development.
[So] Source:J Plant Res;129(4):685-95, 2016 Jul.
[Is] ISSN:1618-0860
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Calcium oxalate (CaOx) crystals in higher plants occur in five forms: raphides, styloids, prisms, druses, and crystal sand. CaOx crystals are formed in almost all tissues in intravacuolar crystal chambers. However, the mechanism of crystallization and the role of CaOx crystals have not been clearly explained. The aim of this study was to explore the occurrence and location of CaOx crystals in organs of Tinantia anomala (Torr.) C.B. Clarke (Commelinaceae) with special attention to ultrastructural changes in the quantity of tapetal raphides during microsporogenesis. We observed various parts of the plant, that is, stems, leaves, sepals, petals, anthers, staminal trichomes and stigmatic papillae and identified CaOx crystals in all parts except staminal trichomes and stigmatic papillae in Tinantia anomala. Three morphological forms: styloids, raphides and prisms were found in different amounts in different parts of the plant. Furthermore, in this species, we identified tapetal raphides in anthers. The number of tapetal raphides changed during microsporogenesis. At the beginning of meiosis, the biosynthesis of raphides proceeded intensively in the provacuoles. These organelles were formed from the endoplasmic reticulum system. In the tetrad stage, we observed vacuoles with needle-shaped raphides (type I) always localised in the centre of the organelle. When the amoeboid tapetum was degenerating, vacuoles also began to fade. We observed a small number of raphides in the stage of mature pollen grains.
[Mh] Termos MeSH primário: Oxalato de Cálcio/metabolismo
Commelinaceae/crescimento & desenvolvimento
Commelinaceae/ultraestrutura
Flores/crescimento & desenvolvimento
Flores/ultraestrutura
[Mh] Termos MeSH secundário: Cristalização
Gametogênese Vegetal
Pólen/crescimento & desenvolvimento
Pólen/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
2612HC57YE (Calcium Oxalate)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:171014
[Lr] Data última revisão:
171014
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160311
[St] Status:MEDLINE
[do] DOI:10.1007/s10265-016-0812-5


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[PMID]:26465254
[Au] Autor:Csábi J; Hsieh TJ; Hasanpour F; Martins A; Kele Z; Gáti T; Simon A; Tóth G; Hunyadi A
[Ti] Título:Oxidized Metabolites of 20-Hydroxyecdysone and Their Activity on Skeletal Muscle Cells: Preparation of a Pair of Desmotropes with Opposite Bioactivities.
[So] Source:J Nat Prod;78(10):2339-45, 2015 Oct 23.
[Is] ISSN:1520-6025
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Increasing the activation of protein kinase B (Akt) has been suggested as a key signaling step in the nonhormonal anabolic activity of the phytoecdysteroid 20-hydroxyecdysone (20E) in mammals. Base-catalyzed autoxidation of this compound was shown previously to yield interesting B-ring-modified analogues. Herein is reported a thorough study on this reaction, resulting in the preparation and complete NMR spectroscopic assignments of calonysterone (5) and its previously overlooked desmotropic pair (7), along with two new sensitive metabolites of 20E. The two isomers showed considerable stability in solution. Time dependency of the reaction for yield optimization is also presented; by means of analytical HPLC, the two desmotropes can reach a maximum combined yield of >90%. The activity of these compounds on Akt phosphorylation was tested in murine skeletal muscle cells. Compounds 2 and 5 showed more potent activity than 20E in increasing Akt activation, while compound 7 exerted an opposite effect. As such, the present study provides the first direct evidence for a pair of desmotropes exerting significantly different bioactivities.
[Mh] Termos MeSH primário: Commelinaceae/química
Medicamentos de Ervas Chinesas/química
Ecdisterona/metabolismo
Músculo Esquelético/metabolismo
[Mh] Termos MeSH secundário: Animais
Cromatografia Líquida de Alta Pressão
Medicamentos de Ervas Chinesas/isolamento & purificação
Medicamentos de Ervas Chinesas/farmacologia
Ecdisterona/isolamento & purificação
Camundongos
Estrutura Molecular
Fibras Musculares Esqueléticas/metabolismo
Músculo Esquelético/efeitos dos fármacos
Oxirredução
Fosforilação
Raízes de Plantas/química
Proteínas Proto-Oncogênicas c-akt/metabolismo
Transdução de Sinais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Drugs, Chinese Herbal); 5289-74-7 (Ecdysterone); EC 2.7.11.1 (Proto-Oncogene Proteins c-akt)
[Em] Mês de entrada:1602
[Cu] Atualização por classe:151023
[Lr] Data última revisão:
151023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151015
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jnatprod.5b00249


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[PMID]:25854807
[Au] Autor:Hang DT; Hang NT; Anh Hle T; Nhiem NX; Hue CT; Binh PT; Dat NT; Nam NH; Yen PH; Minh CV; Hung NV; Kiem PV
[Ad] Endereço:Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam.
[Ti] Título:1H and 13C NMR assignments of new ecdysteroids from Callisia fragrans.
[So] Source:Magn Reson Chem;53(5):379-82, 2015 May.
[Is] ISSN:1097-458X
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Commelinaceae/química
Ecdisteroides/química
Extratos Vegetais/química
Espectroscopia de Prótons por Ressonância Magnética/métodos
[Mh] Termos MeSH secundário: Isótopos de Carbono/análise
Isótopos de Carbono/química
Ecdisteroides/análise
Extratos Vegetais/análise
[Pt] Tipo de publicação:LETTER
[Nm] Nome de substância:
0 (Carbon Isotopes); 0 (Ecdysteroids); 0 (Plant Extracts)
[Em] Mês de entrada:1601
[Cu] Atualização por classe:150424
[Lr] Data última revisão:
150424
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150410
[St] Status:MEDLINE
[do] DOI:10.1002/mrc.4214


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[PMID]:25484312
[Au] Autor:Gruhlke MC; Hemmis B; Noll U; Wagner R; Lühring H; Slusarenko AJ
[Ad] Endereço:Department of Plant Physiology (Bio III), RWTH Aachen University, 52056 Aachen, Germany.
[Ti] Título:The defense substance allicin from garlic permeabilizes membranes of Beta vulgaris, Rhoeo discolor, Chara corallina and artificial lipid bilayers.
[So] Source:Biochim Biophys Acta;1850(4):602-11, 2015 Apr.
[Is] ISSN:0006-3002
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Allicin (diallylthiosulfinate) is the major volatile- and antimicrobial substance produced by garlic cells upon wounding. We tested the hypothesis that allicin affects membrane function and investigated 1) betanine pigment leakage from beetroot (Beta vulgaris) tissue, 2) the semipermeability of the vacuolar membrane of Rhoeo discolor cells, 3) the electrophysiology of plasmalemma and tonoplast of Chara corallina and 4) electrical conductivity of artificial lipid bilayers. METHODS: Garlic juice and chemically synthesized allicin were used and betanine loss into the medium was monitored spectrophotometrically. Rhoeo cells were studied microscopically and Chara- and artificial membranes were patch clamped. RESULTS: Beet cell membranes were approximately 200-fold more sensitive to allicin on a mol-for-mol basis than to dimethyl sulfoxide (DMSO) and approximately 400-fold more sensitive to allicin than to ethanol. Allicin-treated Rhoeo discolor cells lost the ability to plasmolyse in an osmoticum, confirming that their membranes had lost semipermeability after allicin treatment. Furthermore, allicin and garlic juice diluted in artificial pond water caused an immediate strong depolarization, and a decrease in membrane resistance at the plasmalemma of Chara, and caused pore formation in the tonoplast and artificial lipid bilayers. CONCLUSIONS: Allicin increases the permeability of membranes. GENERAL SIGNIFICANCE: Since garlic is a common foodstuff the physiological effects of its constituents are important. Allicin's ability to permeabilize cell membranes may contribute to its antimicrobial activity independently of its activity as a thiol reagent.
[Mh] Termos MeSH primário: Beta vulgaris/efeitos dos fármacos
Chara/efeitos dos fármacos
Commelinaceae/efeitos dos fármacos
Alho/química
Bicamadas Lipídicas/metabolismo
Ácidos Sulfínicos/farmacologia
[Mh] Termos MeSH secundário: Beta vulgaris/metabolismo
Permeabilidade da Membrana Celular/efeitos dos fármacos
Chara/metabolismo
Commelinaceae/metabolismo
Dimetil Sulfóxido/farmacologia
Pigmentos Biológicos/metabolismo
Ácidos Sulfínicos/farmacocinética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Lipid Bilayers); 0 (Pigments, Biological); 0 (Sulfinic Acids); 3C39BY17Y6 (allicin); YOW8V9698H (Dimethyl Sulfoxide)
[Em] Mês de entrada:1508
[Cu] Atualização por classe:161126
[Lr] Data última revisão:
161126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:141209
[St] Status:MEDLINE


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[PMID]:25232679
[Au] Autor:Wang QJ; Zheng LP; Zhao PF; Zhao YL; Wang JW
[Ad] Endereço:College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
[Ti] Título:Cloning and characterization of an elicitor-responsive gene encoding 3-hydroxy-3-methylglutaryl coenzyme A reductase involved in 20-hydroxyecdysone production in cell cultures of Cyanotis arachnoidea.
[So] Source:Plant Physiol Biochem;84:1-9, 2014 Nov.
[Is] ISSN:1873-2690
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:Cyanotis arachnoidea contains a rich source of bioactive phytoecdysteroids (i.e. analogues of insect steroid hormones). 3-Hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) supplies mevalonate for the synthesis of many secondary metabolites including 20-hydroxyecdysone (20E), one of metabolism-enhancing phytoecdysteroids. In this study, in order to develop a sustainable source of 20E, cell suspension cultures were established from shoot cultures of C. arachnoidea, and a full length cDNA encoding HMGR (designated as CaHMGR) was cloned and characterized. The cDNA contained 2037 nucleotides with a complete open reading frame (ORF) of 1800 nucleotides, which was predicted to encode a peptide of 599 amino acids. Expression analysis by real-time PCR revealed that CaHMGR mRNA was abundant in C. arachnoidea stems, roots and leaves. When cultivated in Murashige & Skoog medium supplemented with 0.2 mg L(-1) 1-naphthlcetic acid (NAA) and 3.0 mg L(-1) 6-benzyladenine (6-BA), C. arachnoidea cells in suspension culture grew rapidly, yielding 20E (124.14 µg L(-1)) after 12 days. The content of 20E in cell cultures elicited by 0.2 mM methyl jasmonate (MeJA), 100 mg L(-1) yeast elicitor (YE) or 25 µM AgNO3 was increased 8-, 2-, and 6-fold over the control, respectively. Quantitative real-time PCR analysis showed that CaHMGR was expressed at a higher level under the treatment of MeJA or Ag(+) elicitor. Our results suggested that 20E accumulation may be the result of the expression up-regulation of CaHMGR involved in the biosynthesis under the treatment of various elicitors.
[Mh] Termos MeSH primário: Commelinaceae/genética
[Mh] Termos MeSH secundário: Acetatos/farmacologia
Acil Coenzima A/metabolismo
Ácidos Carboxílicos/farmacologia
Clonagem Molecular
Commelinaceae/química
Ciclopentanos/farmacologia
Ecdisterona/metabolismo
Regulação da Expressão Gênica de Plantas/efeitos dos fármacos
Naftalenos/farmacologia
Fases de Leitura Aberta
Oxilipinas/farmacologia
Reação em Cadeia da Polimerase em Tempo Real
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Acetates); 0 (Acyl Coenzyme A); 0 (Carboxylic Acids); 0 (Cyclopentanes); 0 (Naphthalenes); 0 (Oxylipins); 1553-55-5 (3-hydroxy-3-methylglutaryl-coenzyme A); 2NIV4O66BH (1-naphthoic acid); 5289-74-7 (Ecdysterone); 900N171A0F (methyl jasmonate)
[Em] Mês de entrada:1508
[Cu] Atualização por classe:170829
[Lr] Data última revisão:
170829
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140919
[St] Status:MEDLINE


  9 / 35 MEDLINE  
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[PMID]:24114927
[Au] Autor:Balázs A; Hunyadi A; Csábi J; Jedlinszki N; Martins A; Simon A; Tóth G
[Ad] Endereço:Ubichem Research Ltd., Illatos út 33, H-1097, Budapest, Hungary.
[Ti] Título:1H and 13C NMR investigation of 20-hydroxyecdysone dioxolane derivatives, a novel group of MDR modulator agents.
[So] Source:Magn Reson Chem;51(12):830-6, 2013 Dec.
[Is] ISSN:1097-458X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The synthesis, structure elucidation and the complete (1)H and (13)C signal assignment of a series of dioxolane derivatives of 20-hydroxyecdysone, synthesized as novel modulators of multidrug resistance, are presented. The structures and NMR signal assignment were established by comprehensive one-dimensional and two-dimensional NMR spectroscopy supported by mass spectrometry.
[Mh] Termos MeSH primário: Commelinaceae/química
Dioxolanos/química
Ecdisterona/análogos & derivados
Raízes de Plantas/química
[Mh] Termos MeSH secundário: Isótopos de Carbono
Dioxolanos/síntese química
Resistência a Múltiplos Medicamentos
Ecdisterona/síntese química
Ecdisterona/química
Espectroscopia de Ressonância Magnética
Espectrometria de Massas
Modelos Moleculares
Conformação Molecular
Prótons
[Pt] Tipo de publicação:LETTER; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (20-hydroxyecdysone dioxolane); 0 (Carbon Isotopes); 0 (Dioxolanes); 0 (Protons); 5289-74-7 (Ecdysterone)
[Em] Mês de entrada:1406
[Cu] Atualização por classe:131111
[Lr] Data última revisão:
131111
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:131012
[St] Status:MEDLINE
[do] DOI:10.1002/mrc.4015


  10 / 35 MEDLINE  
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[PMID]:23883949
[Au] Autor:Vignolini S; Moyroud E; Glover BJ; Steiner U
[Ad] Endereço:Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK. sv319@cam.ac.uk
[Ti] Título:Analysing photonic structures in plants.
[So] Source:J R Soc Interface;10(87):20130394, 2013 Oct 06.
[Is] ISSN:1742-5662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The outer layers of a range of plant tissues, including flower petals, leaves and fruits, exhibit an intriguing variation of microscopic structures. Some of these structures include ordered periodic multilayers and diffraction gratings that give rise to interesting optical appearances. The colour arising from such structures is generally brighter than pigment-based colour. Here, we describe the main types of photonic structures found in plants and discuss the experimental approaches that can be used to analyse them. These experimental approaches allow identification of the physical mechanisms producing structural colours with a high degree of confidence.
[Mh] Termos MeSH primário: Cor
Plantas/ultraestrutura
[Mh] Termos MeSH secundário: Commelinaceae/anatomia & histologia
Commelinaceae/ultraestrutura
Flores/anatomia & histologia
Flores/ultraestrutura
Frutas/anatomia & histologia
Frutas/ultraestrutura
Magnoliopsida/anatomia & histologia
Magnoliopsida/ultraestrutura
Óptica e Fotônica
Folhas de Planta/anatomia & histologia
Folhas de Planta/ultraestrutura
Plantas/anatomia & histologia
Selaginellaceae/anatomia & histologia
Selaginellaceae/ultraestrutura
Tulipa/anatomia & histologia
Tulipa/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1402
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130726
[St] Status:MEDLINE
[do] DOI:10.1098/rsif.2013.0394



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