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  1 / 130 MEDLINE  
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[PMID]:28749031
[Au] Autor:Yeoh SH; Satake A; Numata S; Ichie T; Lee SL; Basherudin N; Muhammad N; Kondo T; Otani T; Hashim M; Tani N
[Ad] Endereço:Faculty of Science, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia.
[Ti] Título:Unravelling proximate cues of mass flowering in the tropical forests of South-East Asia from gene expression analyses.
[So] Source:Mol Ecol;26(19):5074-5085, 2017 Oct.
[Is] ISSN:1365-294X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Elucidating the physiological mechanisms of the irregular yet concerted flowering rhythm of mass flowering tree species in the tropics requires long-term monitoring of flowering phenology, exogenous and endogenous environmental factors, as well as identifying interactions and dependencies among these factors. To investigate the proximate factors for floral initiation of mast seeding trees in the tropics, we monitored the expression dynamics of two key flowering genes, meteorological conditions and endogenous resources over two flowering events of Shorea curtisii and Shorea leprosula in the Malay Peninsula. Comparisons of expression dynamics of genes studied indicated functional conservation of FLOWERING LOCUS T (FT) and LEAFY (LFY) in Shorea. The genes were highly expressed at least 1 month before anthesis for both species. A mathematical model considering the synergistic effect of cool temperature and drought on activation of the flowering gene was successful in predicting the observed gene expression patterns. Requirement of both cool temperature and drought for floral transition suggested by the model implies that flowering phenologies of these species are sensitive to climate change. Our molecular phenology approach in the tropics sheds light on the conserved role of flowering genes in plants inhabiting different climate zones and can be widely applied to dissect the flowering processes in other plant species.
[Mh] Termos MeSH primário: Dipterocarpaceae/genética
Flores/fisiologia
Proteínas de Plantas/genética
[Mh] Termos MeSH secundário: Mudança Climática
Dipterocarpaceae/fisiologia
Secas
Flores/genética
Florestas
Regulação da Expressão Gênica de Plantas
Malásia
Modelos Teóricos
Temperatura Ambiente
Fatores de Transcrição/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Transcription Factors)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171220
[Lr] Data última revisão:
171220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170728
[St] Status:MEDLINE
[do] DOI:10.1111/mec.14257


  2 / 130 MEDLINE  
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[PMID]:28779899
[Au] Autor:Sak B; Jandová A; Dolezal K; Kvác M; Kvetonová D; Hlásková L; Rost M; Olsanský M; Nurcahyo W; Foitová I
[Ad] Endereço:Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceské Budejovice, Czech Republic. Electronic address: casio@paru.cas.cz.
[Ti] Título:Effects of selected Indonesian plant extracts on E. cuniculi infection in vivo.
[So] Source:Exp Parasitol;181:94-101, 2017 Oct.
[Is] ISSN:1090-2449
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The present study was conducted to evaluate the methanolic extracts from several plant leaves widely used in traditional medicine to cure digestive tract disorders and in the self-medication of wild animals such as non-human primates, namely Archidendron fagifolium, Diospyros sumatrana, Shorea sumatrana, and Piper betle leaves, with regard to their antimicrosporidial activity against Encephalitozoon cuniculi in immunocompetent BALB/c mice determined using molecular detection of microsporidial DNA (qPCR) in various tissues and body fluids of infected, treated mice. Of the plant extracts tested, Diospyros sumatrana provided the most promising results, reducing spore shedding by 88% compared to untreated controls. Moreover, total burden per 1 g of tissue in the D. sumatrana extract-treated group reached 87% reduction compared to untreated controls, which was comparable to the effect of the standard drug, Albendazole. This data represents the baseline necessary for further research focused on determining the structure, activity and modes of action of the active compounds, mainly of D. sumatrana, enabling subsequent development of antimicrosporidial remedies.
[Mh] Termos MeSH primário: Antifúngicos/uso terapêutico
Diospyros/química
Encephalitozoon cuniculi/efeitos dos fármacos
Encefalitozoonose/tratamento farmacológico
Extratos Vegetais/uso terapêutico
[Mh] Termos MeSH secundário: Albendazol/farmacologia
Albendazol/uso terapêutico
Animais
Antifúngicos/farmacologia
Cercopithecus aethiops
DNA Fúngico/isolamento & purificação
Dimetil Sulfóxido/farmacologia
Dimetil Sulfóxido/uso terapêutico
Dipterocarpaceae/química
Fabaceae/química
Fezes/parasitologia
Trato Gastrointestinal/microbiologia
Imunocompetência
Indonésia
Camundongos
Camundongos Endogâmicos BALB C
Piper betle/química
Extratos Vegetais/farmacologia
Folhas de Planta/química
Esporos Fúngicos/efeitos dos fármacos
Células Vero
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antifungal Agents); 0 (DNA, Fungal); 0 (Plant Extracts); F4216019LN (Albendazole); YOW8V9698H (Dimethyl Sulfoxide)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170807
[St] Status:MEDLINE


  3 / 130 MEDLINE  
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[PMID]:28610295
[Au] Autor:Pinkert S; Bechly G; Nel A
[Ad] Endereço:Faculty of Biology, Department of Ecology - Animal Ecology, Philipps-Universität Marburg, Karl-von-Frisch-Strasse 8, 35043 Marburg, Germany.. StefanPinkert@posteo.de.
[Ti] Título:First record of hawker dragonflies from Eocene Baltic amber (Odonata: Anisoptera: Gomphaeschnidae).
[So] Source:Zootaxa;4272(2):263-275, 2017 05 29.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:Based on three specimens, the first record of hawker dragonflies from Baltic amber is described in a new genus with two new species: Elektrogomphaeschna peterthieli gen. et sp. nov. and E. annekeae sp. nov.. They belong to the family Gomphaeschnidae and are tentatively attributed to the extinct subfamily Gomphaeschnaoidinae. The latter was previously only known from Cretaceous fossils and is here shown to have survived the K-Pg mass extinction event. This discovery also confirms the still higher diversity of Gomphaeschnidae during the Paleogene compared to the Neogene that was dominated by the more derived Aeshnidae sensu stricto.
[Mh] Termos MeSH primário: Odonatos
[Mh] Termos MeSH secundário: Âmbar
Animais
Países Bálticos
Dipterocarpaceae
Fósseis
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amber)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170810
[Lr] Data última revisão:
170810
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4272.2.7


  4 / 130 MEDLINE  
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[PMID]:28430826
[Au] Autor:Ng CH; Lee SL; Tnah LH; Ng KKS; Lee CT; Diway B; Khoo E
[Ad] Endereço:Division of Forestry Biotechnology, Forest Research Institute Malaysia, Kepong, Selangor, Malaysia.
[Ti] Título:Geographic origin and individual assignment of Shorea platyclados (Dipterocarpaceae) for forensic identification.
[So] Source:PLoS One;12(4):e0176158, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The development of timber tracking methods based on genetic markers can provide scientific evidence to verify the origin of timber products and fulfill the growing requirement for sustainable forestry practices. In this study, the origin of an important Dark Red Meranti wood, Shorea platyclados, was studied by using the combination of seven chloroplast DNA and 15 short tandem repeats (STRs) markers. A total of 27 natural populations of S. platyclados were sampled throughout Malaysia to establish population level and individual level identification databases. A haplotype map was generated from chloroplast DNA sequencing for population identification, resulting in 29 multilocus haplotypes, based on 39 informative intraspecific variable sites. Subsequently, a DNA profiling database was developed from 15 STRs allowing for individual identification in Malaysia. Cluster analysis divided the 27 populations into two genetic clusters, corresponding to the region of Eastern and Western Malaysia. The conservativeness tests showed that the Malaysia database is conservative after removal of bias from population subdivision and sampling effects. Independent self-assignment tests correctly assigned individuals to the database in an overall 60.60-94.95% of cases for identified populations, and in 98.99-99.23% of cases for identified regions. Both the chloroplast DNA database and the STRs appear to be useful for tracking timber originating in Malaysia. Hence, this DNA-based method could serve as an effective addition tool to the existing forensic timber identification system for ensuring the sustainably management of this species into the future.
[Mh] Termos MeSH primário: Dipterocarpaceae/genética
Genética Forense
Genes de Plantas
Geografia
[Mh] Termos MeSH secundário: DNA de Cloroplastos/genética
Repetições de Microssatélites/genética
Reprodutibilidade dos Testes
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Chloroplast)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170907
[Lr] Data última revisão:
170907
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170422
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0176158


  5 / 130 MEDLINE  
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[PMID]:28402310
[Au] Autor:Yavari S; Malakahmad A; Sapari NB; Yavari S
[Ad] Endereço:Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Malaysia E-mail: amirhossein@utp.edu.my; amalakahmad@gmail.com.
[Ti] Título:Treatment of urea manufacturing facility effluent by Hopea odorata and Khaya ivorensis.
[So] Source:Water Sci Technol;75(7-8):1684-1692, 2017 Apr.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phytoremediation is an environmentally friendly and sustainable alternative for treatment of nitrogen-enriched wastewaters. In this study, Ta-khian (Hopea odorata) and Lagos mahogany (Khaya ivorensis), two tropical timber plants, were investigated for their performances in treatment of urea manufacturing factory effluent with high nitrogen (N) content. Plant seedlings received four concentrations of N (190, 240, 290 and 340 mg/L N) in laboratory-scale constructed wetlands every 4 days for a duration of 8 weeks. The solution volumes supplied to each container, amount of N recovered by plants and plant growth characteristics were measured throughout the experiment. Results showed that Ta-khian plants were highly effective at reducing N concentration and volume of water. A maximum of 63.05% N recovery was obtained by Ta-khian plants grown in 290 mg/L N, which was assimilated in the chlorophyll molecule structure and shoot biomass. Significant positive correlations have been shown between N recovery percentages and plant growth parameters. Ta-Khian plants can be applied as suitable phytoremediators for mitigating N pollution in water sources.
[Mh] Termos MeSH primário: Dipterocarpaceae/metabolismo
Meliaceae/metabolismo
Ureia/química
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Resíduos Industriais/análise
Nigéria
Nitrogênio/metabolismo
Águas Residuais/química
Purificação da Água/instrumentação
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Industrial Waste); 0 (Waste Water); 8W8T17847W (Urea); N762921K75 (Nitrogen)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170413
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.043


  6 / 130 MEDLINE  
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[PMID]:28230758
[Au] Autor:Ninomiya K; Chaipech S; Kunikata Y; Yagi R; Pongpiriyadacha Y; Muraoka O; Morikawa T
[Ad] Endereço:Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan. ninomiya@phar.kindai.ac.jp.
[Ti] Título:Quantitative Determination of Stilbenoids and Dihydroisocoumarins in Shorea roxburghii and Evaluation of Their Hepatoprotective Activity.
[So] Source:Int J Mol Sci;18(2), 2017 Feb 20.
[Is] ISSN:1422-0067
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:A simultaneous quantitative analytical method for 13 stilbenoids including (-)-hopeaphenol ( ), (+)-isohopeaphenol ( ), hemsleyanol D ( ), (-)-ampelopsin H ( ), vaticanols A ( ), E ( ), and G ( ), (+)-α-viniferin ( ), pauciflorol A ( ), hopeafuran ( ), (-)-balanocarpol ( ), (-)-ampelopsin A ( ), and -resveratrol 10- -ß-d-glucopyranoside ( ), and two dihydroisocoumarins, phayomphenols A1 ( ) and A2 ( ) in the extract of (dipterocarpaceae) was developed. According to the established protocol, distributions of these 15 polyphenols ( - ) in the bark and wood parts of and a related plant were evaluated. In addition, the principal polyphenols ( , , , - ) exhibited hepatoprotective effects against d-galactosamine (d-galN)/lipopolysaccharide (LPS)-induced liver injury in mice at a dose of 100 or 200 mg/kg, p.o. To characterize the mechanisms of action, the isolates were examined in in vitro studies assessing their effects on (i) d-GalN-induced cytotoxicity in primary cultured mouse hepatocytes; (ii) LPS-induced nitric oxide (NO) production in mouse peritoneal macrophages; and (iii) tumor necrosis factor-α (TNF-α)-induced cytotoxicity in L929 cells. The mechanisms of action of these polyphenols ( , , and ) were suggested to be dependent on the inhibition of LPS-induced macrophage activation and reduction of sensitivity of hepatocytes to TNF-α. However, none of the isolates reduced the cytotoxicity caused by d-GalN.
[Mh] Termos MeSH primário: Dipterocarpaceae/química
Hepatócitos/efeitos dos fármacos
Isocumarinas/farmacologia
Extratos Vegetais/farmacologia
Substâncias Protetoras/farmacologia
Estilbenos/farmacologia
[Mh] Termos MeSH secundário: Animais
Linhagem Celular
Cromatografia Líquida de Alta Pressão
Modelos Animais de Doenças
Galactosamina/efeitos adversos
Hepatócitos/metabolismo
Seres Humanos
Isocumarinas/química
Lipopolissacarídeos/efeitos adversos
Fígado/efeitos dos fármacos
Fígado/metabolismo
Hepatopatias/tratamento farmacológico
Hepatopatias/etiologia
Hepatopatias/metabolismo
Hepatopatias/patologia
Macrófagos Peritoneais/efeitos dos fármacos
Macrófagos Peritoneais/imunologia
Macrófagos Peritoneais/metabolismo
Masculino
Camundongos
Óxido Nítrico/metabolismo
Extratos Vegetais/química
Polifenóis/química
Polifenóis/farmacologia
Substâncias Protetoras/química
Estilbenos/química
Fator de Necrose Tumoral alfa/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Isocoumarins); 0 (Lipopolysaccharides); 0 (Plant Extracts); 0 (Polyphenols); 0 (Protective Agents); 0 (Stilbenes); 0 (Tumor Necrosis Factor-alpha); 31C4KY9ESH (Nitric Oxide); 7535-00-4 (Galactosamine)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170420
[Lr] Data última revisão:
170420
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170224
[St] Status:MEDLINE


  7 / 130 MEDLINE  
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[PMID]:27871266
[Au] Autor:Kabir MS; Hossain MM; Kabir MI; Ahmad S; Chakrabarty N; Rahman MA; Rahman MM
[Ad] Endereço:Department of Pharmacy, International Islamic University Chittagong, Chittagong, 4318, Bangladesh.
[Ti] Título:Antioxidant, antidiarrheal, hypoglycemic and thrombolytic activities of organic and aqueous extracts of Hopea odorata leaves and in silico PASS prediction of its isolated compounds.
[So] Source:BMC Complement Altern Med;16(1):474, 2016 Nov 21.
[Is] ISSN:1472-6882
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Hopea Odorata, locally known as Telsur (Bangladesh), has some traditional uses as folk medicine. This study aims to investigate the antioxidant, antidiarrheal, hypoglycemic and thrombolytic activities of H. odorata leaf extracts as new therapeutic prospects predicting the activity of some of the isolated compounds of this plant. METHODS: Leaves of Hopea odorata was extracted with pure methanol (MEHO), ethanol (EEHO) and water (AEHO). The extract was tested for antioxidant activity by using reducing power and H O scavenging assay. Antidiarrheal effects were assayed by three standard methods of bioassay: Castor oil-induced diarrhea, Castor oil induced enteropooling and gastrointestinal transit test. Hypoglycemic effect was determined by normoglycemic model of mice. Thrombolytic activity was evaluated by clot lyses test for human and mice blood. In silico PASS prediction was applied for phytoconstituents namely Balanocarpol, Hopeaphenol and Ampelopsin H isolated from this plant. RESULT: Among the all extracts, MEHO exhibited strong antioxidant activity in both reducing power and H O scavenging assay. Phenol content of MEHO was 297.22 ± 0.78 mg/g and flavonol content was 91.53 ± 1.82 mg/g. All the experiment of extracts at dose of 200 and 400 mg/kg and the standard drug loperamide (5 mg/kg) showed significant (p < 0.001) inhibition against castor oil induced diarrhea and castor oil induced enteropooling in mice. There were also significant (p < 0.01) reduction in gastrointestinal motility in the charcoal meal test. Leaf extract showed no significant (P < 0.01) decrease of blood glucose compared to Glibenclamide in normoglycemic mice. Using an in vitro thrombolytic model, MEHO showed the highest and significant clot lysis of human and mice blood compared to Streptokinase. PASS predicted the wide range of antioxidant, free radical scavenger, Nitric oxide scavenger, cardioprotectant, hepatoprotectant, thrombolytic, fibrinolytic, antibacterial, antifungal, anticarcinogenic, anthelmintic and anti-inflammatory activity of examined phytoconstituents. CONCLUSION: These findings suggest that the plant may be a potential source of new antidiarrheal, thrombolytic and antioxidative agents but it is found to have no antidiabetic capability. PASS prediction matched with present study for the extracts. Further study needs to identify the PASS predicted biological actions of the phytoconstituents.
[Mh] Termos MeSH primário: Antidiarreicos/farmacologia
Antioxidantes/farmacologia
Diarreia/tratamento farmacológico
Dipterocarpaceae/química
Fibrinolíticos/farmacologia
Hipoglicemiantes/farmacologia
Extratos Vegetais/farmacologia
Folhas de Planta/química
[Mh] Termos MeSH secundário: Animais
Antidiarreicos/química
Antioxidantes/química
Células Sanguíneas/efeitos dos fármacos
Células Sanguíneas/fisiologia
Feminino
Fibrinolíticos/química
Seres Humanos
Hipoglicemiantes/química
Masculino
Camundongos
Estrutura Molecular
Extratos Vegetais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antidiarrheals); 0 (Antioxidants); 0 (Fibrinolytic Agents); 0 (Hypoglycemic Agents); 0 (Plant Extracts)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161123
[St] Status:MEDLINE


  8 / 130 MEDLINE  
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[PMID]:27813581
[Au] Autor:Duc NM; Duy VD; Xuan BT; Thang BV; Ha NT; Tam NM
[Ad] Endereço:Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam.
[Ti] Título:Genetic structure of the threatened Dipterocarpus costatus populations in lowland tropical rainforests of southern Vietnam.
[So] Source:Genet Mol Res;15(4), 2016 Oct 24.
[Is] ISSN:1676-5680
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Dipterocarpus costatus is an endangered species restricted to the lowland forests of southern Vietnam. Habitat loss and over-exploitation of D. costatus wood are the major threats to this species. We investigated the level of genetic variability within and among populations of D. costatus in order to provide guidelines for the conservation, management, and restoration of this species to the Forest Protection Department, Vietnam. Nine microsatellite markers were used to analyze 114 samples from four populations representing the natural range of D. costatus in southeast Vietnam. We indicated the low allelic diversity (N = 2.3) and low genetic diversities with an average observed and expected heterozygosity of 0.130 and 0.151, respectively, in the lowland forests of southeast Vietnam. The low genetic diversity might be a consequence of inbreeding within the small and isolated populations of D. costatus owing to its habitat loss and over-exploitation. All populations deviated from Hardy-Weinberg equilibrium showing reduced heterozygosity. Alleles were lost from the populations by genetic drift. Genetic differentiation among populations was high (average pairwise F = 0.405), indicating low gene flow (<1) and isolated populations due to its destructed habitat and large geographical distances (P < 0.05) among populations. Heterozygosity excess tests (except of Bu Gia Map only under infinite allele model) were negative. The high genetic variation (62.7%) was found within populations. The STRUCTURE and neighbor joining tree results suggest strong differentiation among D. costatus populations, with the three genetic clusters, Phu Quoc, Tan Phu and Bu Gia Map, and Lo Go-Xa Mat due to habitat fragmentation and isolation. The threatened status of D. costatus was related to a lack of genetic diversity, with all its populations isolated in small forest patches. We recommend the establishment of an ex situ conservation site for D. costatus with a new big population comprising all genetic groups in order to enhance its survival under different environmental stresses.
[Mh] Termos MeSH primário: Dipterocarpaceae/genética
Genética Populacional
Repetições de Microssatélites/genética
Filogenia
[Mh] Termos MeSH secundário: Conservação dos Recursos Naturais
Dipterocarpaceae/crescimento & desenvolvimento
Espécies em Perigo de Extinção
Deriva Genética
Endogamia
Floresta Úmida
Vietnã
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170221
[Lr] Data última revisão:
170221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161105
[St] Status:MEDLINE
[do] DOI:10.4238/gmr15048821


  9 / 130 MEDLINE  
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[PMID]:27797714
[Au] Autor:Kondo T; Nishimura S; Tani N; Ng KK; Lee SL; Muhammad N; Okuda T; Tsumura Y; Isagi Y
[Ad] Endereço:Graduate School for International Development and Cooperation, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima 739-8529, Japan kondo@hiroshima-u.ac.jp.
[Ti] Título:Complex pollination of a tropical Asian rainforest canopy tree by flower-feeding thrips and thrips-feeding predators.
[So] Source:Am J Bot;103(11):1912-1920, 2016 Nov.
[Is] ISSN:1537-2197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PREMISE OF THE STUDY: In tropical rainforests of Southeast Asia, a highly fecund thrips (Thrips spp.) responds rapidly to the mass flowering at multiple-year intervals characteristic of certain species such as the canopy tree studied here, Shorea acuminata, by feeding on flower resources. However, past DNA analyses of pollen adherent to thrips bodies revealed that the thrips promoted a very high level of self-pollination. Here, we identified the pollinator that contributes to cross-pollination and discuss ways that the pollination system has adapted to mass flowering. METHODS: By comparing the patterns of floral visitation and levels of genetic diversity in adherent pollen loads among floral visitors, we evaluated the contribution of each flower visitor to pollination. KEY RESULTS: The big-eyed bug, Geocoris sp., a major thrips predator, was an inadvertent pollinator, and importantly contributed to cross-pollination. The total outcross pollen adhering to thrips was approximately 30% that on the big-eyed bugs. Similarly, 63% of alleles examined in S. acuminata seeds and seedlings occurred in pollen adhering to big-eyed bugs; about 30% was shared with pollen from thrips. CONCLUSIONS: During mass flowering, big-eyed bugs likely travel among flowering S. acuminata trees, attracted by the abundant thrips. Floral visitation patterns of big-eyed bugs vs. other insects suggest that these bugs can maintain their population size between flowering by preying upon another thrips (Haplothrips sp.) that inhabits stipules of S. acuminata throughout the year and quickly respond to mass flowering. Thus, thrips and big-eyed bugs are essential components in the pollination of S. acuminata.
[Mh] Termos MeSH primário: Dipterocarpaceae/fisiologia
Polinização
Tisanópteros/fisiologia
[Mh] Termos MeSH secundário: Animais
Dipterocarpaceae/genética
Dipterocarpaceae/parasitologia
Flores/genética
Flores/parasitologia
Flores/fisiologia
Variação Genética
Técnicas de Genotipagem
Repetições de Microssatélites/genética
Pólen/genética
Pólen/parasitologia
Pólen/fisiologia
Densidade Demográfica
Floresta Úmida
Reprodução
Plântulas/genética
Plântulas/parasitologia
Plântulas/fisiologia
Sementes/genética
Sementes/fisiologia
Árvores
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170515
[Lr] Data última revisão:
170515
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161101
[St] Status:MEDLINE


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Fotocópia
[PMID]:27725445
[Au] Autor:Moriyama H; Moriyama M; Ninomiya K; Morikawa T; Hayakawa T
[Ad] Endereço:Pharmaceutical Research and Technology Institute, Kindai University.
[Ti] Título:Inhibitory Effects of Oligostilbenoids from the Bark of Shorea roxburghii on Malignant Melanoma Cell Growth: Implications for Novel Topical Anticancer Candidates.
[So] Source:Biol Pharm Bull;39(10):1675-1682, 2016.
[Is] ISSN:1347-5215
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Human malignant melanomas remain associated with dismal prognosis due to their resistance to apoptosis and chemotherapy. There is growing interest in plant oligostilbenoids owing to their pleiotropic biological activities, including anti-inflammatory, antioxidant, and anticancer effects. Recent studies have demonstrated that resveratrol, a well-known stilbenoid from red wine, exhibits cell cycle-disrupting and apoptosis-inducing activities on melanoma cells. The objective of our study was to evaluate the anti-melanoma effect of oligostilbenoids isolated from the bark of Shorea roxburghii. Among the isolates, four resveratrol oligomers, i.e., (-)-hopeaphenol, vaticanol B, hemsleyanol D, and (+)-α-viniferin, possessed more potent antiproliferative action than did resveratrol against SK-MEL-28 melanoma cells. Cell cycle analysis revealed that (-)-hopeaphenol, hemsleyanol D, and (+)-α-viniferin arrested cell division cycle at the G1 phase, whereas vaticanol B had little effect on the cell cycle. In addition, cell proliferation assay also revealed that (+)-α-viniferin induced DNA damage followed by induction of apoptosis in SK-MEL-28 cells, which was confirmed by an increased expression of γ-H2AX and cleaved caspase-3, respectively. The compounds vaticanol B, hemsleyanol D, and resveratrol significantly increased the expression of p21, suggesting that they are able to block cell cycle progression. Moreover, these oligostilbenoids downmodulated cylin D1 expression and extracellular signal-regulated kinase (ERK) activation. Furthermore, hemsleyanol D, (+)-α-viniferin, and resveratrol significantly decreased the expression of cyclin B1, which could also suppress cell cycle progression. The present study thus suggests that these plant oligostilbenoids are effective as therapeutic or chemopreventive agents against melanoma.
[Mh] Termos MeSH primário: Antineoplásicos/farmacologia
Dipterocarpaceae
Estilbenos/farmacologia
[Mh] Termos MeSH secundário: Administração Tópica
Apoptose/efeitos dos fármacos
Caspase 3/metabolismo
Ciclo Celular/efeitos dos fármacos
Linhagem Celular Tumoral
Proliferação Celular/efeitos dos fármacos
Sobrevivência Celular/efeitos dos fármacos
Seres Humanos
Casca de Planta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents); 0 (Stilbenes); EC 3.4.22.- (Caspase 3)
[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:161012
[St] Status:MEDLINE



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