Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.456.500.432 [Categoria DeCS]
Referências encontradas : 176 [refinar]
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[PMID]:29254303
[Au] Autor:Abbasi MH; Fatima S; Khawar MB; Naz N; Mujeeb KA; Akhtar T; Sheikh N
[Ad] Endereço:Department of Zoology, Government College of Science, Lahore, Pakistan.
[Ti] Título:Dose-dependent acute phase response of aqueous leaf decoction of Nerium oleander in Wistar rats.
[So] Source:J Biol Regul Homeost Agents;31(4):985-989, 2017 Oct-Dec.
[Is] ISSN:0393-974X
[Cp] País de publicação:Italy
[La] Idioma:eng
[Ab] Resumo:Many studies have been carried out in order to determine the toxicity of medicinal plants. The objective of this study was to compare and analyze the hepatic response against two doses of Nerium oleander, (N. oleander) “kaner” leaf decoction. Aqueous leaf decoction was injected intramuscularly into both hind limbs of male rats (200∓10g), assigned into three categories (n=4): control group with no treatment; group I, injected with 5 ml/ kg; and group II injected with 10 ml/ kg of leaf decoction, respectively. Animals were sacrificed 6 h after administration and hepato-histological changes were then observed. The decoction induced an acute phase reaction reflected by a more significant recruitment of inflammatory cells in group II than in group I and controls, as observed by histological studies. These results indicated that both doses can induce an acute-phase condition. Hence, traditional practice of medicinal plants without preliminary dose assessment must not be administered.
[Mh] Termos MeSH primário: Reação de Fase Aguda/induzido quimicamente
Fígado/efeitos dos fármacos
Nerium/química
Extratos Vegetais/efeitos adversos
Folhas de Planta/química
[Mh] Termos MeSH secundário: Reação de Fase Aguda/imunologia
Reação de Fase Aguda/patologia
Animais
Biomarcadores/metabolismo
Relação Dose-Resposta Imunológica
Ectodisplasinas/imunologia
Ectodisplasinas/metabolismo
Imuno-Histoquímica
Injeções Intramusculares
Fígado/imunologia
Fígado/patologia
Masculino
Plantas Medicinais
Ratos
Ratos Wistar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Ectodysplasins); 0 (Plant Extracts)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171220
[St] Status:MEDLINE


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[PMID]:28922384
[Au] Autor:Kumar D; Al Hassan M; Naranjo MA; Agrawal V; Boscaiu M; Vicente O
[Ad] Endereço:Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universitat Politècnica de València, Valencia, Spain.
[Ti] Título:Effects of salinity and drought on growth, ionic relations, compatible solutes and activation of antioxidant systems in oleander (Nerium oleander L.).
[So] Source:PLoS One;12(9):e0185017, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Nerium oleander is an ornamental species of high aesthetic value, grown in arid and semi-arid regions because of its drought tolerance, which is also considered as relatively resistant to salt; yet the biochemical and molecular mechanisms underlying oleander's stress tolerance remain largely unknown. To investigate these mechanisms, one-year-old oleander seedlings were exposed to 15 and 30 days of treatment with increasing salt concentrations, up to 800 mM NaCl, and to complete withholding of irrigation; growth parameters and biochemical markers characteristic of conserved stress-response pathways were then determined in stressed and control plants. Strong water deficit and salt stress both caused inhibition of growth, degradation of photosynthetic pigments, a slight (but statistically significant) increase in the leaf levels of specific osmolytes, and induction of oxidative stress-as indicated by the accumulation of malondialdehyde (MDA), a reliable oxidative stress marker-accompanied by increases in the levels of total phenolic compounds and antioxidant flavonoids and in the specific activities of ascorbate peroxidase (APX) and glutathione reductase (GR). High salinity, in addition, induced accumulation of Na+ and Cl- in roots and leaves and the activation of superoxide dismutase (SOD) and catalase (CAT) activities. Apart from anatomical adaptations that protect oleander from leaf dehydration at moderate levels of stress, our results indicate that tolerance of this species to salinity and water deficit is based on the constitutive accumulation in leaves of high concentrations of soluble carbohydrates and, to a lesser extent, of glycine betaine, and in the activation of the aforementioned antioxidant systems. Moreover, regarding specifically salt stress, mechanisms efficiently blocking transport of toxic ions from the roots to the aerial parts of the plant appear to contribute to a large extent to tolerance in Nerium oleander.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Nerium/crescimento & desenvolvimento
Estresse Oxidativo/efeitos dos fármacos
Raízes de Plantas/metabolismo
Salinidade
Cloreto de Sódio/farmacologia
[Mh] Termos MeSH secundário: Catalase/metabolismo
Desidratação
Ativação Enzimática/efeitos dos fármacos
Proteínas de Plantas/metabolismo
Superóxido Dismutase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Plant Proteins); 451W47IQ8X (Sodium Chloride); EC 1.11.1.6 (Catalase); EC 1.15.1.1 (Superoxide Dismutase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170919
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185017


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[PMID]:28097483
[Au] Autor:Khandare RV; Desai SB; Bhujbal SS; Watharkar AD; Biradar SP; Pawar PK; Govindwar SP
[Ad] Endereço:Department of Biotechnology, Shivaji University, Vidyanagar, Kolhapur, 416004, India. krahulbt@gmail.com.
[Ti] Título:Phytoremediation of fluoride with garden ornamentals Nerium oleander, Portulaca oleracea, and Pogonatherum crinitum.
[So] Source:Environ Sci Pollut Res Int;24(7):6833-6839, 2017 Mar.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Nursery grown plants of Nerium oleander, Pogonatherum crinitum, and Portulaca oleracea were observed to remove fluoride up to 92, 80, and 73%, respectively, from NaF solution at the concentration of 10 mg L within 15 days. Concentration range of 10-50 mg L of fluoride revealed a constant decrease of removal from 92 to 51% within 15 days by N. oleander, while the biomass (one to five plants) showed enhancement in removal from 74 to 98% in 10 days. Translocation and bioaccumulation factors calculated after fluoride contents in roots and leaves of N. oleander, P. crinitum, and P. oleracea were 1.85, 1.19, and 1.43, and 9.8, 3.6, and 2.2, respectively. P . oleracea, P. crinitum, and N. oleander showed reductions in chlorophyll contents by 40, 57 and 25 and 8%, carbohydrates by 50, 44, and 16%, and proteins by 38, 53, and 15%, respectively. Activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) in the roots of P. oleracea, P. crinitum, and N. oleander were observed to be induced by 400, 383, and 500%; 80, 105, and 424%; and 153, 77, and 71%, respectively, while the leaves showed induction in SOD, CAT, and GPX activities by 550, 315, and 165%; 196, 227, and 243%; and 280, 242, and 184%, respectively. Results endorsed the superiority of N. oleander for fluoride removal over other plant species.
[Mh] Termos MeSH primário: Fluoretos/metabolismo
Nerium/metabolismo
Poaceae/metabolismo
Portulaca/metabolismo
Poluentes Químicos da Água/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Catalase/metabolismo
Clorofila/metabolismo
Fluoretos/análise
Estresse Oxidativo
Folhas de Planta/metabolismo
Proteínas de Plantas/metabolismo
Raízes de Plantas/metabolismo
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Water Pollutants, Chemical); 1406-65-1 (Chlorophyll); EC 1.11.1.6 (Catalase); Q80VPU408O (Fluorides)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171104
[Lr] Data última revisão:
171104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170119
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8424-8


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[PMID]:27910702
[Au] Autor:Ma YM; Qiao K; Kong Y; Li MY; Guo LX; Miao Z; Fan C
[Ad] Endereço:a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China.
[Ti] Título:A new isoquinolone alkaloid from an endophytic fungus R22 of Nerium indicum.
[So] Source:Nat Prod Res;31(8):951-958, 2017 Apr.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A new isoquinolone alkaloid named 5-hydroxy-8-methoxy-4-phenylisoquinolin-1(2H)-one (3), together with two known quinolinone alkaloids 3-O-methylviridicatin (1) and viridicatol (2) were isolated from the fermentation of an endophytic fungus Penicillium sp. R22 in Nerium indicum. Their structures were elucidated by NMR, IR and MS data, and were also confirmed by comparing with the reported data in the literature. Meanwhile, the antibacterial and antifungal activities of all compounds were tested, and the results showed that three compounds had strong antifungal activity. Among them, compound 2 revealed potent antibacterial activity against Staphylococcus aureus with MIC value of 15.6 µg/mL.
[Mh] Termos MeSH primário: Alcaloides/química
Antibacterianos/farmacologia
Antifúngicos/farmacologia
Isoquinolinas/isolamento & purificação
Nerium/microbiologia
Penicillium/química
[Mh] Termos MeSH secundário: Alcaloides/isolamento & purificação
Alcaloides/farmacologia
Antibacterianos/química
Antifúngicos/química
Avaliação Pré-Clínica de Medicamentos/métodos
Endófitos/química
Hidroxiquinolinas/química
Hidroxiquinolinas/isolamento & purificação
Isoquinolinas/química
Isoquinolinas/farmacologia
Testes de Sensibilidade Microbiana
Estrutura Molecular
Penicillium/fisiologia
Quinolonas/química
Quinolonas/isolamento & purificação
Staphylococcus aureus/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (3-O-methylviridicatin); 0 (5-hydroxy-8-methoxy-4-phenylisoquinolin-1(2H)-one); 0 (Alkaloids); 0 (Anti-Bacterial Agents); 0 (Antifungal Agents); 0 (Hydroxyquinolines); 0 (Isoquinolines); 0 (Quinolones); 45P12JNE0L (viridicatol)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161203
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2016.1258556


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[PMID]:27756956
[Au] Autor:Mohale DS; Tripathi AS; Shrirao AV; Jawarkar AG; Chandewar AV
[Ad] Endereço:Department of Pharmacology, P Wadhwani College of Pharmacy, Yavatmal, Maharashtra, India.
[Ti] Título:Evaluation of antioxidant effect of in anxious rats.
[So] Source:Indian J Pharmacol;48(4):430-433, 2016 Jul-Aug.
[Is] ISSN:1998-3751
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:AIM: The aim of this study was to analyze the ethyl acetate extract of (NIE) flower for its antioxidant effect in anxious Sprague-Dawley rats. MATERIALS AND METHODS: Animals were divided into six groups ( = 6) and treated with 200 mg/kg and 400 mg/kg p.o. of NIE for 21 days to assess its preventive and curative effects. Anxiety was induced by isolating animals socially for 21 days. Elevated plus maze (EPM) and light and dark model were used for measuring anxiety in animals. Oxidative stress parameters such as lipid peroxidation (LPO), superoxide dismutase (SOD), catalase (CAT), and reduced glutathione (GSH) in blood and brain tissue homogenate were monitored after 21 days of social isolation in animals. RESULTS: Rats were treated with NIE 200 mg/kg and 400 mg/kg p.o. Both the treatments showed a significant ( < 0.001) increase in the number of open arm entries and time spent in open arm in EPM when compared with the negative control. Results also demonstrated that there was a significant ( < 0.001) increase in the number of lightbox entries and time spent in light box in light and dark model when compared with negative control. There was a significant ( < 0.001) improvement in endogenous anti-oxidants such as SOD, CAT, reduced GSH, and decreased levels of LPO in blood and brain tissue when compared with the negative control. CONCLUSION: The present study suggests the role of NIE in the treatment of anxiety, possibly by modulating the oxidative stress.
[Mh] Termos MeSH primário: Ansiolíticos/uso terapêutico
Antioxidantes/uso terapêutico
Ansiedade de Separação/tratamento farmacológico
Nerium/química
Estresse Oxidativo/efeitos dos fármacos
Extratos Vegetais/uso terapêutico
[Mh] Termos MeSH secundário: Animais
Ansiolíticos/isolamento & purificação
Antioxidantes/administração & dosagem
Ansiedade de Separação/metabolismo
Encéfalo/efeitos dos fármacos
Encéfalo/enzimologia
Encéfalo/metabolismo
Modelos Animais de Doenças
Flores/química
Peroxidação de Lipídeos/efeitos dos fármacos
Masculino
Aprendizagem em Labirinto/efeitos dos fármacos
Extratos Vegetais/isolamento & purificação
Ratos Sprague-Dawley
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Anxiety Agents); 0 (Antioxidants); 0 (Plant Extracts)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161021
[St] Status:MEDLINE


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[PMID]:27685366
[Au] Autor:Butler J; Khan S; Scarzella G
[Ad] Endereço:From the ASPCA Animal Poison Control Center, Urbana, Illinois (J.B., S.K.); and College Road Animal Hospital, Wilmington, North Carolina (G.S.).
[Ti] Título:Fatal Oleander Toxicosis in Two Miniature Horses.
[So] Source:J Am Anim Hosp Assoc;52(6):398-402, 2016 Nov/Dec.
[Is] ISSN:0587-2871
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Two young American miniature horses from the same farm were evaluated by a veterinarian due to presence of lethargy, anorexia, and cardiac arrhythmias. Both horses were treated aggressively with IV fluids and other supportive measures. The first horse died approximately 72 hr after the start of clinical signs and the second horse was humanely euthanized due to poor response to treatment. Oleander toxicosis was suspected based on the types of clinical signs present and due to several oleander plants and dried leaves present on the property. Oleander toxicosis was confirmed by the presence of oleandrin in gastrointestinal contents and digoxin in the serum of second horse.
[Mh] Termos MeSH primário: Doenças dos Cavalos/induzido quimicamente
Nerium/toxicidade
Intoxicação por Plantas/veterinária
[Mh] Termos MeSH secundário: Animais
Evolução Fatal
Feminino
Doenças Transmitidas por Alimentos/veterinária
Cavalos
Folhas de Planta
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170127
[Lr] Data última revisão:
170127
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160930
[St] Status:MEDLINE


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[PMID]:27637152
[Au] Autor:Cerboneschi M; Decorosi F; Biancalani C; Ortenzi MV; Macconi S; Giovannetti L; Viti C; Campanella B; Onor M; Bramanti E; Tegli S
[Ad] Endereço:Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente, Laboratorio di Patologia Vegetale Molecolare, Università degli Studi di Firenze, Via della Lastruccia 10, 50019 Sesto Fiorentino (Firenze), Italy.
[Ti] Título:Indole-3-acetic acid in plant-pathogen interactions: a key molecule for in planta bacterial virulence and fitness.
[So] Source:Res Microbiol;167(9-10):774-787, 2016 Nov - Dec.
[Is] ISSN:1769-7123
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:The plant pathogenic bacterium Pseudomonas savastanoi, the causal agent of olive and oleander knot disease, uses the so-called "indole-3-acetamide pathway" to convert tryptophan to indole-3-acetic acid (IAA) via a two-step pathway catalyzed by enzymes encoded by the genes in the iaaM/iaaH operon. Moreover, pathovar nerii of P. savastanoi is able to conjugate IAA to lysine to generate the less biologically active compound IAA-Lys via the enzyme IAA-lysine synthase encoded by the iaaL gene. Interestingly, iaaL is now known to be widespread in many Pseudomonas syringae pathovars, even in the absence of the iaaM and iaaH genes for IAA biosynthesis. Here, two knockout mutants, ΔiaaL and ΔiaaM, of strain Psn23 of P. savastanoi pv. nerii were produced. Pathogenicity tests using the host plant Nerium oleander showed that ΔiaaL and ΔiaaM were hypervirulent and hypovirulent, respectively and these features appeared to be related to their differential production of free IAA. Using the Phenotype Microarray approach, the chemical sensitivity of these mutants was shown to be comparable to that of wild-type Psn23. The main exception was 8 hydroxyquinoline, a toxic compound that is naturally present in plant exudates and is used as a biocide, which severely impaired the growth of ΔiaaL and ΔiaaM, as well as growth of the non-pathogenic mutant ΔhrpA, which lacks a functional Type Three Secretion System (TTSS). According to bioinformatics analysis of the Psn23 genome, a gene encoding a putative Multidrug and Toxic compound Extrusion (MATE) transporter, was found upstream of iaaL. Similarly to iaaL and iaaM, its expression appeared to be TTSS-dependent. Moreover, auxin-responsive elements were identified for the first time in the modular promoters of both the iaaL gene and the iaaM/iaaH operon of P. savastanoi, suggesting their IAA-inducible transcription. Gene expression analysis of several genes related to TTSS, IAA metabolism and drug resistance confirmed the presence of a concerted regulatory network in this phytopathogen among virulence, fitness and drug efflux.
[Mh] Termos MeSH primário: Interações Hospedeiro-Patógeno
Ácidos Indolacéticos/metabolismo
Nerium/microbiologia
Reguladores de Crescimento de Planta/metabolismo
Pseudomonas/metabolismo
[Mh] Termos MeSH secundário: Deleção de Genes
Regulação Bacteriana da Expressão Gênica
Redes Reguladoras de Genes
Redes e Vias Metabólicas/genética
Doenças das Plantas/microbiologia
Pseudomonas/genética
Transcrição Genética
Virulência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Indoleacetic Acids); 0 (Plant Growth Regulators); 6U1S09C61L (indoleacetic acid)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160918
[St] Status:MEDLINE


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[PMID]:27516209
[Au] Autor:Dey P; Dutta S; Biswas-Raha A; Sarkar MP; Chaudhuri TK
[Ad] Endereço:Cellular Immunology Laboratory, Department of Zoology, Life Science Building, University of North Bengal, PO: Raja Rammohunpur, Siliguri, 734013, West Bengal, India.
[Ti] Título:Haloalkane induced hepatic insult in murine model: amelioration by Oleander through antioxidant and anti-inflammatory activities, an in vitro and in vivo study.
[So] Source:BMC Complement Altern Med;16(1):280, 2016 Aug 11.
[Is] ISSN:1472-6882
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Nerium oleander L. (syn. Nerium indicum Mill, Nerium odorum Aiton) belongs to the family Apocynaceae. It is used for its anti-inflammatory, anti-diabetic, anti-cancer and hepatoprotective activities in traditional medicine. Previous pharmacognostic studies suggested that 70 % hydro-methanolic extracts of oleander possess potent free radical scavenging and anti-inflammatory activities, both of which are helpful against hepatotoxicity. METHODS: Hydro-methanolic extracts of oleander stem and root were evaluated for their hepatoprotective activities in acute CCl4 intoxicated mouse through in vitro and in vivo studies. Silymarin was used as positive reference. Antioxidant enzymes, pro-inflammatory markers and liver enzymatic and biochemical parameters were studied. The extracts were further chemically characterized using Fourier Transform Infrared (FTIR) spectroscopy and Gas chromatography-mass spectrometry (GC-MS). RESULTS: CCl4 toxicity caused fatty liver formation by increase of relative liver weight (32.53 g) compared to control group (16.08 g). The elevated liver enzymatic and biochemical parameters due to CCl4 toxicity were considerably normalized by the extracts treatment under both in vivo and in vitro models. Oleander stem (NOSE) and root (NORE) extracts increased the reduced hepatic catalase activity 27.37 and 25.25 %, whereas peroxidase activity was increased 18.19 and 22.78 %, respectively. The extent of lipid peroxidation was significantly (p < 0.01) lowered 20.76 % (NOSE) and 21.12 % (NORE) compared to CCl4 group. The levels of pro-inflammatory tumor necrosis factor-α (TNF-α) was lowered 71.33 % (NOSE) and 61.60 % (NORE). Histopathological study demonstrated substantial reduction of hepatocellular necrosis, fatty infiltration, sinusoidal dilation, bile duct proliferation, vascular congestion, leukocyte infiltration in the silymarin and extract treated groups. Furthermore, various bioactive compounds were identified in the extracts such as apocynin, tocopherol, squalene, vanillin, isoeugenol, amyrin, lupeol etc. CONCLUSION: The present study provided convincing evidence that oleander extracts possess potent hepatoprotective capacity which was primarily governed by its antioxidant and anti-inflammatory activities. The collegial bioactivities of the phytochemicals may be accredited behind the hepatoprotective activity of oleander.
[Mh] Termos MeSH primário: Anti-Inflamatórios/farmacologia
Antioxidantes/farmacologia
Tetracloreto de Carbono/toxicidade
Doença Hepática Induzida por Substâncias e Drogas/metabolismo
Fígado/efeitos dos fármacos
Nerium/química
Extratos Vegetais/farmacologia
[Mh] Termos MeSH secundário: Animais
Anti-Inflamatórios/química
Antioxidantes/química
Peso Corporal/efeitos dos fármacos
Sobrevivência Celular/efeitos dos fármacos
Doença Hepática Induzida por Substâncias e Drogas/patologia
Modelos Animais de Doenças
Feminino
Peroxidação de Lipídeos/efeitos dos fármacos
Fígado/patologia
Masculino
Camundongos
Extratos Vegetais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Inflammatory Agents); 0 (Antioxidants); 0 (Plant Extracts); CL2T97X0V0 (Carbon Tetrachloride)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160813
[St] Status:MEDLINE
[do] DOI:10.1186/s12906-016-1260-4


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[PMID]:27220729
[Au] Autor:Chondrogiannis C; Grammatikopoulos G
[Ad] Endereço:Laboratory of Plant Physiology, Department of Biology, University of Patras, Rio, 26504, Patras, Greece.
[Ti] Título:Photosynthesis in developing leaf of juveniles and adults of three Mediterranean species with different growth forms.
[So] Source:Photosynth Res;130(1-3):427-444, 2016 Dec.
[Is] ISSN:1573-5079
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Leaf development is influenced by almost all the prevailing environmental conditions as well as from the conditions at the time of bud formation. Furthermore, the growth form of a plant determines the leaf longevity and subsequently the investment in biomass and the internal structure of the mesophyll. Therefore, photosynthetic traits of a growing leaf, though, partly predetermined, should also acclimate to temporal changes during developmental period. In addition, the age of the plant can affect photosynthesis of the growing leaf, yet, in the majority of studies, the age is associated to the size of the plant. To test if the reproductive status of the plant affects the time kinetics of the photosynthetic capacity of a growing leaf and the relative contribution of the plants' growth form to the whole procedure, field measurements were conducted in juveniles (prereproductive individuals) and adults (fully reproductive individuals) of an evergreen sclerophyllous shrub (Nerium oleander), a semi-deciduous dimorphic shrub (Phlomis fruticosa), and a winter deciduous tree with pre-leafing flowering (Cercis siliquastrum). PSII structural and functional integrity was progressively developed in all species, but already completed, only some days after leaf expansion in P. fruticosa. Developing leaf as well as fully developed leaf in adults of C. siliquastrum showed enhanced relative size of the pool of final PSI electron acceptors. Photosynthetic traits between juveniles and adults of P. fruticosa were similar, though the matured leaf of adults exhibited lower transpiration rates and improved water-use efficiency than that of juveniles. Adults of the evergreen shrub attained higher CO assimilation rate than juveniles in matured leaf which can be attributed to higher electron flow devoted to carboxylation, and lower photorespiration rate. The reproductive phase of the plant seemed to be involved in modifications of the PSII and PSI functions of the deciduous tree, in carboxylation and photorespiration traits of the evergreen shrub, and in water conductance efficiency of the semi-deciduous shrub. However, it is interesting, that regardless of the growth form of the plant and the prospective leaf longevity of the developing leaf, adults need to support flowering outmatch juveniles, in terms of photosynthesis.
[Mh] Termos MeSH primário: Fabaceae/crescimento & desenvolvimento
Nerium/crescimento & desenvolvimento
Phlomis/crescimento & desenvolvimento
Fotossíntese/fisiologia
Folhas de Planta/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Clorofila/análise
Clorofila/fisiologia
Fabaceae/fisiologia
Fluorescência
Região do Mediterrâneo
Nerium/fisiologia
Nitrogênio/análise
Phlomis/fisiologia
Folhas de Planta/química
Folhas de Planta/fisiologia
Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
059QF0KO0R (Water); 1406-65-1 (Chlorophyll); N762921K75 (Nitrogen)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:171101
[Lr] Data última revisão:
171101
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160526
[St] Status:MEDLINE


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[PMID]:27209774
[Au] Autor:Ozen SA; Yaman M
[Ti] Título:Examination of Correlation between Histidine and Cadmium Absorption by Eleagnus angustifolia L., Vitis vinifera L. and Nerium oleander L. Using HPLC-MS and ICP-MS.
[So] Source:Guang Pu Xue Yu Guang Pu Fen Xi;36(2):588-92, 2016 Feb.
[Is] ISSN:1000-0593
[Cp] País de publicação:China
[La] Idioma:eng
[Ab] Resumo:In this study, HPLC-MS and ICP-MS methods wereused for the determination of histidine and cadmium in Eleagnus angustifolia L., Vitis vinifera L. and Nerium oleander L. leaves taken from industrial area including Gaziantep and Bursa cities. To histidine determination by HPLC-MS, flow rate of mobile phase, fragmentor potential, injection volume and column temperature were optimized as 0.2 mL · min⁻¹, 70 V, 15 µL and 20 °C, respectively. For extraction of histidine from plants, distilled water was used by applying on 90 °C and 30 min. The concentrations (as mg · kg⁻¹) of histidine were found to be in range of 8~22 for Eleagnus angustifolia L., 10~33 for Vitis vinifera L. and 6~11 for Nerium oleander L. The concentrations of cadmium were found to be in ranges of 6~21 µg · kg⁻¹ for Vitis vinifera L. 15~110 µg · kg⁻¹ for Eleagnus angustifolia L. and 63~218 µg · kg⁻¹ for Nerium oleander L.
[Mh] Termos MeSH primário: Cádmio/metabolismo
Elaeagnaceae/metabolismo
Histidina/metabolismo
Nerium/metabolismo
Vitis/metabolismo
[Mh] Termos MeSH secundário: Cromatografia Líquida de Alta Pressão
Espectrometria de Massas
Folhas de Planta/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
00BH33GNGH (Cadmium); 4QD397987E (Histidine)
[Em] Mês de entrada:1606
[Cu] Atualização por classe:160523
[Lr] Data última revisão:
160523
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160524
[St] Status:MEDLINE



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