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[PMID]:28817648
[Au] Autor:Godaert L; Bartholet S; Najioullah F; Hentzien M; Fanon JL; Césaire R; Dramé M
[Ad] Endereço:Department of Geriatrics, University Hospitals of Martinique, Fort-de-France, Martinique, France.
[Ti] Título:Screening for Chikungunya virus infection in aged people: Development and internal validation of a new score.
[So] Source:PLoS One;12(8):e0181472, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: This study aimed to derive and validate a score for Chikungunya virus (CHIKV) infection screening in old people admitted to acute care units. METHODS: This study was performed in the Martinique University Hospitals from retrospective cases. Patients were aged 65+, admitted to acute care units for suspected CHIKV infection in 2014, with biological testing using Reverse Transcription Polymerase Chain Reaction (RT-PCR). RT-PCR was used as the gold standard. A screening score was created using adjusted odds ratios of factors associated with positive RT-PCR derived from a multivariable logistic regression model. A ROC curve was used to determine the best cut-off of the score. Bootstrap analysis was used to evaluate its internal validity. RESULTS: In all, 687 patients were included, 68% with confirmed CHIKV infection, and 32% with laboratory-unconfirmed CHIKV infection. Mean age was 80±8 years, 51% were women. Four variables were found to be independently associated with positive RT-PCR (fever: 3 points; arthralgia of the ankle: 2 points; lymphopenia: 6 points; absence of neutrophil leucocytosis: 10 points). The best cut-off was score ≥12; sensitivity was 87% (83%-90%) and specificity was 70% (63%-76%). CONCLUSION: This score shows good diagnostic performance and good internal validation and could be helpful to screen aged people for CHIKV infection.
[Mh] Termos MeSH primário: Febre de Chikungunya/epidemiologia
Febre de Chikungunya/virologia
Vírus Chikungunya
[Mh] Termos MeSH secundário: Fatores Etários
Idoso
Idoso de 80 Anos ou mais
Febre de Chikungunya/diagnóstico
Feminino
Seres Humanos
Masculino
Programas de Rastreamento
Fenótipo
Curva ROC
Reprodutibilidade dos Testes
Estudos Retrospectivos
Índias Ocidentais/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171018
[Lr] Data última revisão:
171018
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170818
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181472


  2 / 3050 MEDLINE  
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[PMID]:28796803
[Au] Autor:Richards EJ; Martin CH
[Ad] Endereço:Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America.
[Ti] Título:Adaptive introgression from distant Caribbean islands contributed to the diversification of a microendemic adaptive radiation of trophic specialist pupfishes.
[So] Source:PLoS Genet;13(8):e1006919, 2017 Aug.
[Is] ISSN:1553-7404
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Rapid diversification often involves complex histories of gene flow that leave variable and conflicting signatures of evolutionary relatedness across the genome. Identifying the extent and source of variation in these evolutionary relationships can provide insight into the evolutionary mechanisms involved in rapid radiations. Here we compare the discordant evolutionary relationships associated with species phenotypes across 42 whole genomes from a sympatric adaptive radiation of Cyprinodon pupfishes endemic to San Salvador Island, Bahamas and several outgroup pupfish species in order to understand the rarity of these trophic specialists within the larger radiation of Cyprinodon. 82% of the genome depicts close evolutionary relationships among the San Salvador Island species reflecting their geographic proximity, but the vast majority of variants fixed between specialist species lie in regions with discordant topologies. Top candidate adaptive introgression regions include signatures of selective sweeps and adaptive introgression of genetic variation from a single population in the northwestern Bahamas into each of the specialist species. Hard selective sweeps of genetic variation on San Salvador Island contributed 5 times more to speciation of trophic specialists than adaptive introgression of Caribbean genetic variation; however, four of the 11 introgressed regions came from a single distant island and were associated with the primary axis of oral jaw divergence within the radiation. For example, standing variation in a proto-oncogene (ski) known to have effects on jaw size introgressed into one San Salvador Island specialist from an island 300 km away approximately 10 kya. The complex emerging picture of the origins of adaptive radiation on San Salvador Island indicates that multiple sources of genetic variation contributed to the adaptive phenotypes of novel trophic specialists on the island. Our findings suggest that a suite of factors, including rare adaptive introgression, may be necessary for adaptive radiation in addition to ecological opportunity.
[Mh] Termos MeSH primário: Adaptação Fisiológica/genética
Especiação Genética
Peixes Listrados/genética
Filogenia
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Ecossistema
Fluxo Gênico
Variação Genética
Genoma
Simpatria
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170827
[Lr] Data última revisão:
170827
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170811
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pgen.1006919


  3 / 3050 MEDLINE  
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[PMID]:28719311
[Au] Autor:Fernandes E; Olive C; Inamo J; Roques F; Cabié A; Hochedez P
[Ad] Endereço:Department of Infectious Diseases, Medicine B, Hospital of Basse Terre, Guadeloupe, France.
[Ti] Título:Infective Endocarditis in French West Indies: A 13-Year Observational Study.
[So] Source:Am J Trop Med Hyg;97(1):77-83, 2017 Jul.
[Is] ISSN:1476-1645
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We conducted an observational study to describe the characteristics of infective endocarditis (IE) in French West Indies (FWI) and to identify variables associated with in-hospital case fatality. The records of the patients admitted for IE to the University Hospital of Martinique between 2000 and 2012 were collected using an electronic case report form. Only Duke-Li definite cases were considered for this analysis. Variables associated with in-hospital mortality were tested using univariate logistic regression analysis. The analysis included 201 patients (median age 58 years, sex ratio: two males to one female). There was no previously known heart disease in 45.8%, a prosthetic valve in 21.4%, and previously known native valve disease in 32.8% of the cases. Community-acquired IE represented 59.7% of all cases, health-care-associated IE represented 38.3% and injection-drug-use-acquired IE represented 1.5%. Locations of IE were distributed as follows: 42.3% were mitral valve IE, 34.8% were aortic valve IE, and 7% were right-sided IE. Microorganisms recovered from blood cultures included 30.4% streptococci, 28.9% staphylococci, and 5% enterococci. Blood cultures were negative in 20.9% of the cases. Surgical treatment was performed in 53% of the patients. In-hospital case fatality rate was 19%. Advanced age, IE, and health-care-associated IE were associated with in-hospital case fatality. The epidemiological and microbiological profile of IE in FWI is in between those observed in developed countries and developing countries: patients were younger, blood cultures were more frequently negative, and IE due to group D streptococci and enterococci were less common than in industrialized countries.
[Mh] Termos MeSH primário: Países Desenvolvidos/estatística & dados numéricos
Países em Desenvolvimento/estatística & dados numéricos
Endocardite/epidemiologia
Endocardite/mortalidade
[Mh] Termos MeSH secundário: Adulto
Fatores Etários
Feminino
Seres Humanos
Masculino
Martinica/epidemiologia
Meia-Idade
Fatores de Risco
Índias Ocidentais/epidemiologia
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170821
[Lr] Data última revisão:
170821
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170719
[St] Status:MEDLINE
[do] DOI:10.4269/ajtmh.16-0514


  4 / 3050 MEDLINE  
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[PMID]:28662044
[Au] Autor:Spangler GL; Rosen BD; Ilori MB; Hanotte O; Kim ES; Sonstegard TS; Burke JM; Morgan JLM; Notter DR; Van Tassell CP
[Ad] Endereço:Animal Genomics and Improvement Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland, United States of America.
[Ti] Título:Whole genome structural analysis of Caribbean hair sheep reveals quantitative link to West African ancestry.
[So] Source:PLoS One;12(6):e0179021, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Hair sheep of Caribbean origin have become an important part of the U.S. sheep industry. Their lack of wool eliminates a number of health concerns and drastically reduces the cost of production. More importantly, Caribbean hair sheep demonstrate robust production performance even in the presence of drug-resistant gastrointestinal nematodes, a rising concern to the industry. Despite the growing importance of hair sheep in the Americas their genetic origins have remained speculative. Prior to this report no genetic studies were able to identify a unique geographical origin of hair sheep in the New World. Our study clarifies the African and European ancestry of Caribbean hair sheep. Whole-genome structural analysis was conducted on four established breeds of hair sheep from the Caribbean region. Using breeds representing Africa and Europe we establish an objective measure indicating Caribbean hair sheep are derived from Iberian and West African origins. Caribbean hair sheep result from West African introgression into established ecotypes of Iberian descent. Genotypes from 47,750 autosomal single nucleotide polymorphism markers scored in 290 animals were used to characterize the population structure of the St. Croix, Barbados Blackbelly, Morada Nova, and Santa Ines. Principal components, admixture, and phylogenetic analyses results correlate with historical patterns of colonization and trade. These patterns support co-migration of these sheep with humans.
[Mh] Termos MeSH primário: Ovinos/genética
[Mh] Termos MeSH secundário: África Ocidental
Animais
Análise de Componente Principal
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170928
[Lr] Data última revisão:
170928
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170630
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179021


  5 / 3050 MEDLINE  
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[PMID]:28641228
[Au] Autor:Mottes C; Lesueur Jannoyer M; Le Bail M; Guéné M; Carles C; Malézieux E
[Ad] Endereço:Cirad, UPR HortSys, F-97285, Le Lamentin, Martinique, France. Electronic address: charles.mottes@cirad.fr.
[Ti] Título:Relationships between past and present pesticide applications and pollution at a watershed outlet: The case of a horticultural catchment in Martinique, French West Indies.
[So] Source:Chemosphere;184:762-773, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The understanding of factors affecting pesticide transfers to catchment outlet is still at a very early stage in tropical context, and especially on tropical volcanic context. We performed on-farm pesticide use surveys during 87 weeks and monitored pesticides in water weekly during 67 weeks at the outlet of a small catchment in Martinique. We identified three types of pollution. First, we showed long-term chronic pollution by chlordecone, diuron and metolachlor resulting from horticultural practices applied 5-20 years ago (quantification frequency higher than 80%). Second, we showed peak pollution. High amounts of propiconazole and fosthiazate applied at low frequencies caused river pollution peaks for weeks following a single application. Low amounts of diquat and diazinon applied at low frequencies also caused pollution peaks. The high amounts of glyphosate applied at high frequency resulted into pollution peaks by glyphosate and aminomethylphosphonic acid (AMPA) in 6 and 20% of the weeks. Any intensification of their uses will result in higher pollution levels. Third, relatively low amounts of glufosinate-ammonium, difenoconazol, spinosad and metaldehyde were applied at high frequencies. Unexpectedly, such pesticides remained barely detected (<1.5%) or undetected in water samples. We showed that AMPA, fosthiazate and propiconazole have serious leaching potential. They might result in future chronic pollution of shallow aquifers alimenting surface water. We prove that to avoid the past errors and decrease the risk of long-term pollution of water resources, it is urgent to reduce or stop the use of pesticides with leaching potential by changing agricultural practices.
[Mh] Termos MeSH primário: Agricultura
Monitoramento Ambiental
Praguicidas/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Clordecona/análise
Água Subterrânea
Martinica
Rios
Recursos Hídricos
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pesticides); 0 (Water Pollutants, Chemical); RG5XJ88UDF (Chlordecone)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170623
[St] Status:MEDLINE


  6 / 3050 MEDLINE  
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[PMID]:28637387
[Au] Autor:Ng LFP
[Ad] Endereço:Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore 138648; email: lisa_ng@immunol.a-star.edu.sg.
[Ti] Título:Immunopathology of Chikungunya Virus Infection: Lessons Learned from Patients and Animal Models.
[So] Source:Annu Rev Virol;4(1):413-427, 2017 Sep 29.
[Is] ISSN:2327-0578
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Chikungunya virus (CHIKV) is an arthropod-borne alphavirus that causes acute and chronic arthritis. The virus reemerged in the Indian Ocean islands in 2005-2006 and is responsible for outbreaks in the Caribbean islands and the Americas since late 2013. Despite the wealth of research over the past 10 years, there are no commercially available antiviral drugs or vaccines. Treatment usually involves analgesics, anti-inflammatory drugs, and supportive care. Most studies have been focused on understanding the pathogenesis of CHIKV infection through clinical observation and with animal models. In this review, the clinical manifestations of CHIKV that define the disease and the use of relevant animal models, from mice to nonhuman primates, are discussed. Understanding key cellular factors in CHIKV infection and the interplay with the immune system will aid in the development of preventive and therapeutic approaches to combat this painful viral disease in humans.
[Mh] Termos MeSH primário: Febre de Chikungunya/imunologia
Febre de Chikungunya/virologia
Vírus Chikungunya/imunologia
Vírus Chikungunya/patogenicidade
[Mh] Termos MeSH secundário: Imunidade Adaptativa
Animais
Anticorpos Antivirais
Febre de Chikungunya/epidemiologia
Modelos Animais de Doenças
Seres Humanos
Imunidade Inata
Ilhas do Oceano Índico/epidemiologia
Camundongos
Modelos Animais
Primatas
Índias Ocidentais/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Antibodies, Viral)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170623
[St] Status:MEDLINE
[do] DOI:10.1146/annurev-virology-101416-041808


  7 / 3050 MEDLINE  
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[PMID]:28609963
[Au] Autor:Zeidler W
[Ad] Endereço:Marine Invertebrates Department, South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia.. wolfgang.zeidler@samuseum.sa.gov.au.
[Ti] Título:Validation of the replacement name Eusceliotes Stebbing, 1888 for the pelagic hyperiidean amphipod genus Euscelus Claus, 1879 (Crustacea: Amphipoda: Hyperiidea: Parascelidae), preoccupied by Euscelus Schoenherr, 1833 (Insecta: Coleoptera: Attelabidae).
[So] Source:Zootaxa;4254(3):377-378, 2017 Apr 18.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:The generic name Euscelus was originally proposed by Schoenherr (1833: 205) for a genus of Leaf Rolling weevils (Insecta: Coleoptera: Attelabidae). It is a valid name, in current use, for a relatively large genus of weevils, widespread in northern South America and central America, including the West Indies and the Caribbean (e.g. Hamilton 2007; Legalov 2007). Euscelus Claus, 1879 was established as a monotypic genus of pelagic amphipod (Crustacea: Amphipoda: Hyperiidea: Parascelidae). It is a very rare genus, still monotypic, with the only species, E. robustus Claus, 1879, having been recorded only twice in the literature prior to my review of the families and genera of the superfamily Platysceloidea (Zeidler 2016); initially by Claus (1879), from the Indian Ocean (off Zanzibar), and secondly by Spandl (1927), from the North Atlantic Ocean (off the Azores). Both authors only recorded males. While examining the collections of the Zoological Museum, University of Copenhagen (Zeidler 2016) more specimens of this rare species were located amongst the collections of the Dana expeditions of 1928-1930 (Jespersen & Tåning 1934), thus enabling a more complete description of the species including that of females. It was recently brought to my attention that, according to the data base Interim Register of Marine and Nonmarine Genera (Rees 2016), Euscelus Claus, 1879 is a junior homonym of Euscelus Schoenherr, 1833. While researching this problem I discovered that Stebbing (1888) had also become aware of this homonymy and had suggested the replacement name Eusceliotes. Unfortunately, Stebbing (1888) only refers to the name in his index (pp. 1672, 1699) and hence subsequent authors were unaware of the above homonymy and Stebbing's replacement name, although it is listed by Neave (1939: 370). The purpose of this communication is to resolve the above homonymy by validating Stebbing's (1888) replacement name. This action is preferred to proposing yet another new name for Euscelus Claus, 1879, in order to avoid further confusion, because Stebbing's name, Eusceliotes, already exists in the literature (Stebbing 1888, Neave 1939).
[Mh] Termos MeSH primário: Anfípodes
Coleópteros
[Mh] Termos MeSH secundário: Animais
Oceano Atlântico
Açores
Região do Caribe
América Central
Feminino
Oceano Índico
Masculino
América do Norte
América do Sul
Tanzânia
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4254.3.6


  8 / 3050 MEDLINE  
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[PMID]:28603244
[Au] Autor:Molina-Acevedo IC; Carrera-Parra LF
[Ad] Endereço:El Colegio de la Frontera Sur. Depto. Sistemática y Ecología Acuática. Estructura y Función del Bentos. Chetumal, Quintana Roo, México. user@example.com.
[Ti] Título:Revision of Marphysa de Quatrefages, 1865 and some species of Nicidion Kinberg, 1865 with the erection of a new genus (Polychaeta: Eunicidae) from the Grand Caribbean.
[So] Source:Zootaxa;4241(1):1-62, 2017 Mar 08.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:Nine species of Marphysa from the Grand Caribbean Region are recognized and described based on the type and non-type specimens. One species is formally described as new: M. emiliae n. sp., and one is re-established as a valid species: M. fragilis Treadwell, 1911. The diagnosis of Nicidion Kinberg, 1865 is restricted based on novel features of the maxillary apparatus. Nicidion angeli (Carrera-Parra & Salazar-Vallejo, 1998) is redescribed, and two species that previously belonged to Marphysa, are transferred to Nicidion: N. longula (Ehlers, 1887) n. comb. and N. obtusa (Verrill, 1900) n. comb.. A new genus Treadwellphysa n. gen. is proposed to include those species having a newly described type of chaetae named spinifalcigers (exhibiting a mixture of falciger and spiniger blades), the base of maxillae II with a small elevation, and the ventral cirri with swollen base as transverse welt with short digitiform tip. Treadwellphysa n. gen. includes a new species, T. yucatanensis n. sp. and three other species previously included in Marphysa: T. amadae (Fauchald, 1977) n. comb., T. languida (Treadwell, 1921) n. comb., and T. veracruzensis (de León-González & Díaz-Castañeda, 2006) n. comb. Some morphological features are evaluated to clarify their variability with respect to specimen size. A key to Eunicidae genera, and keys to species of Marphysa and Treadwellphysa n. gen. from the Grand Caribbean region are given.
[Mh] Termos MeSH primário: Poliquetos
[Mh] Termos MeSH secundário: Distribuição Animal
Animais
Região do Caribe
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170809
[Lr] Data última revisão:
170809
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170613
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4241.1.1


  9 / 3050 MEDLINE  
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[PMID]:28408324
[Au] Autor:Gutiérrez-Valencia J; Chomicki G; Renner SS
[Ad] Endereço:Systematic Botany and Mycology, University of Munich (LMU), Menzinger Str. 67, 80638 Munich, Germany.
[Ti] Título:Recurrent breakdowns of mutualisms with ants in the neotropical ant-plant genus Cecropia (Urticaceae).
[So] Source:Mol Phylogenet Evol;111:196-205, 2017 Jun.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Mutualisms could be evolutionarily unstable, with changes in partner abundances or in the spatial context of interactions potentially promoting their dissolution. We test this prediction using the defense mutualisms between species of the Neotropical genus Cecropia and Azteca ants. A new, multigene phylogeny with representatives of all five genera of Cecropieae (most of them from the Neotropics) and half of the 61 species of Cecropia shows the West African endemic Musanga (2spp.) as sister to Cecropia, implying dispersal from the Neotropics to Africa, with a molecular clock suggesting that this occurred about 23Mya. Cecropia, a genus of neotropical pioneer trees, started diversifying ca. 8Mya. We infer a single origin of specialized symbiosis with Azteca within Cecropia, eight complete losses of this symbiosis, and a potential partner shift involving the replacement of Azteca by Neoponera luteola ants. Niche space modeling based on geo-referenced occurrences of over 9000 collections representing 58 of the 61 species of Cecropia, together with several comparative analyses, implies that mutualism loss is concentrated at high altitudes and on Caribbean islands, with the surprisingly frequent breakdowns potentially facilitated by low species-specificity of interacting Cecropia and Azteca mutualists.
[Mh] Termos MeSH primário: Formigas/fisiologia
Cecropia (Planta)/classificação
Simbiose
Clima Tropical
[Mh] Termos MeSH secundário: África
Altitude
Animais
Filogenia
Fatores de Tempo
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171009
[Lr] Data última revisão:
171009
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170415
[St] Status:MEDLINE


  10 / 3050 MEDLINE  
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[PMID]:28403177
[Au] Autor:Bedoya CA; Dreisigacker S; Hearne S; Franco J; Mir C; Prasanna BM; Taba S; Charcosset A; Warburton ML
[Ad] Endereço:International Maize and Wheat Improvement Center, Applied Biotechnology Center, Texcoco, Mexico.
[Ti] Título:Genetic diversity and population structure of native maize populations in Latin America and the Caribbean.
[So] Source:PLoS One;12(4):e0173488, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This study describes the genetic diversity and population structure of 194 native maize populations from 23 countries of Latin America and the Caribbean. The germplasm, representing 131 distinct landraces, was genetically characterized as population bulks using 28 SSR markers. Three main groups of maize germplasm were identified. The first, the Mexico and Southern Andes group, highlights the Pre-Columbian and modern exchange of germplasm between North and South America. The second group, Mesoamerica lowland, supports the hypothesis that two separate human migration events could have contributed to Caribbean maize germplasm. The third, the Andean group, displayed early introduction of maize into the Andes, with little mixing since then, other than a regional interchange zone active in the past. Events and activities in the pre- and post-Columbian Americas including the development and expansion of pre-Columbian cultures and the arrival of Europeans to the Americas are discussed in relation to the history of maize migration from its point of domestication in Mesoamerica to South America and the Caribbean through sea and land routes.
[Mh] Termos MeSH primário: Variação Genética
Zea mays/genética
[Mh] Termos MeSH secundário: América Central
Frequência do Gene
Genes de Plantas
Repetições de Microssatélites
Filogenia
Análise de Sequência de DNA
América do Sul
Índias Ocidentais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170504
[Lr] Data última revisão:
170504
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0173488



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