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  1 / 3701 MEDLINE  
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Rocha, Joäo Batista Teixeira
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[PMID]:29339219
[Au] Autor:da Silva CS; de Cássia Gonçalves de Lima R; Elekofehinti OO; Ogunbolude Y; Duarte AE; Rocha JBT; Alencar de Menezes IR; Barros LM; Tsopmo A; Lukong KE; Kamdem JP
[Ad] Endereço:Department of Biological Sciences, Regional University of Cariri, Campus Pimenta, Crato, Ceará, CEP 63105-000, Brazil.
[Ti] Título:Caffeine-supplemented diet modulates oxidative stress markers and improves locomotor behavior in the lobster cockroach Nauphoeta cinerea.
[So] Source:Chem Biol Interact;282:77-84, 2018 Feb 25.
[Is] ISSN:1872-7786
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:The effects of caffeine supplementation is well documented in conventional animal models, however, in the lobster cockroaches Nauphoeta cinerea, they have not been reported. Thus, the aim of this study was to investigate the locomotor behavior and biochemical endpoints in the head of the nymphs of N. cinerea following 60 days exposure to food supplemented with 0, 0.5, 1.0, 2.5, 5.0 and 10.0 mg of caffeine/g of diet. The analysis of the locomotor behavior using the video-tracking software, Any-maze, for 12 min revealed that caffeine supplementation caused significant behavioral improvement. There was increase in distance travelled, velocity, frequency of rotation and turn angle (stereotypical behavior such as circling movements), and this was supported by the representative track plots of the path travelled by cockroaches in the open-field arena. In addition, caffeine supplementation markedly increased total thiol and non-protein thiol glutathione (GSH) levels in the heads of cockroaches, and this was in parallel with significant reduction of lipid peroxidation and free Fe(II) content. Taking together, our results indicate that long-term caffeine supplementation may exert preventive effects against oxidative stress and support the use of N. cinerea as an efficient alternative model to assess the efficacy of food molecules.
[Mh] Termos MeSH primário: Biomarcadores/metabolismo
Cafeína/farmacologia
Baratas/efeitos dos fármacos
Baratas/metabolismo
Locomoção/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Dieta/métodos
Suplementos Nutricionais
Glutationa/metabolismo
Peroxidação de Lipídeos/efeitos dos fármacos
Modelos Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 3G6A5W338E (Caffeine); GAN16C9B8O (Glutathione)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180209
[Lr] Data última revisão:
180209
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180118
[St] Status:MEDLINE


  2 / 3701 MEDLINE  
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[PMID]:28973021
[Au] Autor:Richards C; Otani S; Mikaelyan A; Poulsen M
[Ad] Endereço:Centre for Social Evolution, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Copenhagen East, Denmark.
[Ti] Título:Pycnoscelus surinamensis cockroach gut microbiota respond consistently to a fungal diet without mirroring those of fungus-farming termites.
[So] Source:PLoS One;12(10):e0185745, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The gut microbiotas of cockroaches and termites play important roles in the symbiotic digestion of dietary components, such as lignocellulose. Diet has been proposed as a primary determinant of community structure within the gut, acting as a selection force to shape the diversity observed within this "bioreactor", and as a key factor for the divergence of the termite gut microbiota from the omnivorous cockroach ancestor. The gut microbiota in most termites supports primarily the breakdown of lignocellulose, but the fungus-farming sub-family of higher termites has become similar in gut microbiota to the ancestral omnivorous cockroaches. To assess the importance of a fungus diet as a driver of community structure, we compare community compositions in the guts of experimentally manipulated Pycnoscelus surinamensis cockroaches fed on fungus cultivated by fungus-farming termites. MiSeq amplicon analysis of gut microbiotas from 49 gut samples showed a step-wise gradient pattern in community similarity that correlated with an increase in the proportion of fungal material provided to the cockroaches. Comparison of the taxonomic composition of manipulated communities to that of gut communities of a fungus-feeding termite species showed that although some bacteria OTUs shared by P. surinamensis and the farming termites increased in the guts of cockroaches on a fungal diet, cockroach communities remained distinct from those of termites. These results demonstrate that a fungal diet can play a role in structuring gut community composition, but at the same time exemplifies how original community compositions constrain the magnitude of such change.
[Mh] Termos MeSH primário: Baratas/microbiologia
Fungos
Microbioma Gastrointestinal
Trato Gastrointestinal/microbiologia
Isópteros/microbiologia
[Mh] Termos MeSH secundário: Animais
Dieta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171004
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185745


  3 / 3701 MEDLINE  
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[PMID]:28934335
[Au] Autor:Kawano T; Imada M; Chamavit P; Kobayashi S; Hashimoto T; Nozaki T
[Ad] Endereço:Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
[Ti] Título:Genetic diversity of Entamoeba: Novel ribosomal lineages from cockroaches.
[So] Source:PLoS One;12(9):e0185233, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Our current taxonomic perspective on Entamoeba is largely based on small-subunit ribosomal RNA genes (SSU rDNA) from Entamoeba species identified in vertebrate hosts with minor exceptions such as E. moshkovskii from sewage water and E. marina from marine sediment. Other Entamoeba species have also been morphologically identified and described from non-vertebrate species such as insects; however, their genetic diversity remains unknown. In order to further disclose the diversity of the genus, we investigated Entamoeba spp. in the intestines of three cockroach species: Periplaneta americana, Blaptica dubia, and Gromphadorhina oblongonota. We obtained 134 Entamoeba SSU rDNA sequences from 186 cockroaches by direct nested PCR using the DNA extracts of intestines from cockroaches, followed by scrutinized BLASTn screening and phylogenetic analyses. All the sequences identified in this study were distinct from those reported from known Entamoeba species, and considered as novel Entamoeba ribosomal lineages. Furthermore, they were positioned at the base of the clade of known Entamoeba species and displayed remarkable degree of genetic diversity comprising nine major groups in the three cockroach species. This is the first report of the diversity of SSU rDNA sequences from Entamoeba in non-vertebrate host species, and should help to understand the genetic diversity of the genus Entamoeba.
[Mh] Termos MeSH primário: Baratas/citologia
Baratas/genética
Variação Genética
Ribossomos/genética
[Mh] Termos MeSH secundário: Animais
Filogenia
Polimorfismo Genético
Análise de Sequência de DNA
Especificidade da Espécie
[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:170922
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185233


  4 / 3701 MEDLINE  
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[PMID]:28848100
[Au] Autor:Wang J; Wu Y; Li J; Huang X; Zhu R
[Ad] Endereço:Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
[Ti] Título:Eight Aeroallergen Skin Extracts May Be the Optimal Panel for Allergic Rhinitis Patients in Central China.
[So] Source:Int Arch Allergy Immunol;173(4):193-198, 2017.
[Is] ISSN:1423-0097
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The prevalence of allergic rhinitis (AR) is increasing rapidly in Central China. The skin prick test (SPT) is the standard tool with which to determine the allergen sensitization status in AR patients. Changes in allergen sensitization patterns have been observed within countries and regions due to geographical and seasonal variations. OBJECTIVE: The aim of this study was to evaluate the profile of SPT reactivity to different aeroallergens in AR patients and to suggest a minimal panel of allergens to detect sensitized patients in Central China. METHODS: From January 2015 to December 2016, patients who presented to Tongji Hospital with suspected AR were tested with the same panel of 19 aeroallergens. The results of SPT were analyzed to determine the minimum test battery panel necessary to cover 99% of the cases of SPT sensitization in different age subgroups. RESULTS: A total of 2,416 patients (male:female ratio 1.2:1) were enrolled in our study with an average age of 22.0 years. The overall rate of sensitization to any allergen was 79.0%, and 64.3% of the subjects were monosensitized. The highest sensitized rate was found in the subgroup aged 14-18 years (92.0%), followed by the subgroups of 6-14 years (86.4%), >18 years (75.6%), and ≤6 years (74.9%). The most common sensitization was to Dermatophagoides farinae (71.1%). Testing with 8 allergens (D. pteronyssinus, D. farinae, Platanus, Artemisia, Cryptomeria, Blatella germanica, Humulus, and Alternaria) was sufficient to identify over 99% of the sensitized patients. CONCLUSION: An SPT panel covering 8 allergen extracts was able to detect almost all sensitized patients suffering from AR symptoms in Central China.
[Mh] Termos MeSH primário: Alérgenos/imunologia
Rinite Alérgica/diagnóstico
Testes Cutâneos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Poluentes Atmosféricos/imunologia
Alternaria/imunologia
Animais
Antígenos de Dermatophagoides/imunologia
Antígenos de Fungos/imunologia
Antígenos de Plantas/imunologia
Criança
Pré-Escolar
China
Baratas/imunologia
Dermatophagoides farinae/imunologia
Dermatophagoides pteronyssinus/imunologia
Feminino
Seres Humanos
Lactente
Proteínas de Insetos/imunologia
Magnoliopsida/imunologia
Masculino
Meia-Idade
Rinite Alérgica/imunologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Allergens); 0 (Antigens, Dermatophagoides); 0 (Antigens, Fungal); 0 (Antigens, Plant); 0 (Insect Proteins)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170830
[St] Status:MEDLINE
[do] DOI:10.1159/000479429


  5 / 3701 MEDLINE  
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[PMID]:28767688
[Au] Autor:Mattison CP; Khurana T; Tarver MR; Florane CB; Grimm CC; Pakala SB; Cottone CB; Riegel C; Bren-Mattison Y; Slater JE
[Ad] Endereço:Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, Louisiana, United States of America.
[Ti] Título:Cross-reaction between Formosan termite (Coptotermes formosanus) proteins and cockroach allergens.
[So] Source:PLoS One;12(8):e0182260, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cockroach allergens can lead to serious allergy and asthma symptoms. Termites are evolutionarily related to cockroaches, cohabitate in human dwellings, and represent an increasing pest problem in the United States. The Formosan subterranean termite (Coptotermes formosanus) is one of the most common species in the southern United States. Several assays were used to determine if C. formosanus termite proteins cross-react with cockroach allergens. Expressed sequence tag and genomic sequencing results were searched for homology to cockroach allergens using BLAST 2.2.21 software. Whole termite extracts were analyzed by mass-spectrometry, immunoassay with IgG and scFv antibodies to cockroach allergens, and human IgE from serum samples of cockroach allergic patients. Expressed sequence tag and genomic sequencing results indicate greater than 60% similarity between predicted termite proteins and German and American cockroach allergens, including Bla g 2/Per a 2, Bla g 3/Per a 3, Bla g 5, Bla g 6/Per a 6, Bla g 7/Per a 7, Bla g 8, Per a 9, and Per a 10. Peptides from whole termite extract were matched to those of the tropomyosin (Bla g 7), arginine kinase (Per a 9), and myosin (Bla g 8) cockroach allergens by mass-spectrometry. Immunoblot and ELISA testing revealed cross-reaction between several proteins with IgG and IgE antibodies to cockroach allergens. Several termite proteins, including the hemocyanin and tropomyosin orthologs of Blag 3 and Bla g 7, were shown to crossreact with cockroach allergens. This work presents support for the hypothesis that termite proteins may act as allergens and the findings could be applied to future allergen characterization, epitope analysis, and clinical studies.
[Mh] Termos MeSH primário: Alérgenos/imunologia
Baratas/imunologia
Imunoglobulinas/metabolismo
Isópteros/imunologia
[Mh] Termos MeSH secundário: Alérgenos/genética
Animais
Baratas/genética
Reações Cruzadas
Imunoglobulina A/metabolismo
Imunoglobulina E/metabolismo
Proteínas de Insetos/genética
Proteínas de Insetos/imunologia
Isópteros/genética
Homologia de Sequência do Ácido Nucleico
Estados Unidos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Allergens); 0 (Immunoglobulin A); 0 (Immunoglobulins); 0 (Insect Proteins); 37341-29-0 (Immunoglobulin E)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170829
[Lr] Data última revisão:
170829
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182260


  6 / 3701 MEDLINE  
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[PMID]:28668242
[Au] Autor:Medsker BH; Forno E; Han YY; Acosta-Pérez E; Colón-Semidey A; Alvarez M; Alcorn JF; Canino GJ; Celedón JC
[Ad] Endereço:Division of Newborn Medicine, Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Pittsburgh, Pennsylvania.
[Ti] Título:Cockroach allergen exposure and plasma cytokines among children in a tropical environment.
[So] Source:Ann Allergy Asthma Immunol;119(1):65-70.e3, 2017 Jul.
[Is] ISSN:1534-4436
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Little is known about the effects of socioeconomic status or cockroach allergen on immune responses in school-age children, particularly in tropical environments. OBJECTIVE: To examine whether cockroach allergen and/or socioeconomic status is associated with plasma cytokine levels in Puerto Rican children. METHODS: This was a cross-sectional study of 532 children (6-14 years old) with (n = 272) and without (n = 260) asthma in San Juan (Puerto Rico). House dust allergens (cockroach [Bla g 2], dust mite [Der p 1], cat dander [Fel d 1], dog dander [Can f 1], and mouse urinary protein [Mus m 1]) were quantified using monoclonal antibody arrays. A panel of 14 cytokines (interleukin [IL]-1ß, IL-4, IL-6, IL-10, IL-17A, IL-17F, IL-21, IL-22, IL-23, IL-25, IL-31, IL-33, interferon-γ, and tumor necrosis factor-α) was measured in plasma samples. Low household income was defined as less than $15,000 per year (below the median income for Puerto Rico in 2008-2009). Linear regression was used for the analysis of cockroach allergen and plasma cytokines. RESULTS: In a multivariable analysis adjusting for low income and other allergen levels, cockroach allergen was significantly associated with decreased IL-17A and with increased levels of 8 cytokines (IL-4, IL-10, IL-17F, IL-21, IL-25, IL-31, interferon-γ, and tumor necrosis factor-α). After stratifying this analysis by cockroach allergy (ie, having a cockroach positive immunoglobulin E reaction), our findings remained largely unchanged for children sensitized to cockroach but became weaker and statistically nonsignificant for non-sensitized children. CONCLUSION: Cockroach allergen has broad effects on adaptive immune responses in school-age children in a tropical environment, particularly in those sensitized to cockroach.
[Mh] Termos MeSH primário: Alérgenos/imunologia
Baratas/imunologia
Citocinas/sangue
Exposição Ambiental/efeitos adversos
Hipersensibilidade/sangue
Hipersensibilidade/etiologia
Clima Tropical
[Mh] Termos MeSH secundário: Adolescente
Animais
Criança
Estudos Transversais
Feminino
Seres Humanos
Hipersensibilidade/epidemiologia
Masculino
Porto Rico/epidemiologia
Fatores Socioeconômicos
Inquéritos e Questionários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Allergens); 0 (Cytokines)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170807
[Lr] Data última revisão:
170807
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170703
[St] Status:MEDLINE


  7 / 3701 MEDLINE  
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[PMID]:28610024
[Au] Autor:Trotter AJ; McRAE JM; Main DC; Finston TL
[Ad] Endereço:Bennelongia Environmental Consultants, 5 Bishop Street, Jolimont, W.A. 6014, Australia.. andrew.trotter@bennelongia.com.au.
[Ti] Título:Speciation in fractured rock landforms: towards understanding the diversity of subterranean cockroaches (Dictyoptera: Nocticolidae: Nocticola) in Western Australia.
[So] Source:Zootaxa;4250(2):143-170, 2017 Apr 04.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:Three new species of subterranean cockroach of the genus Nocticola from the Pilbara region of Western Australia are described on morphological characters of males. Nocticola quartermainei n. sp., Nocticola cockingi n. sp. and Nocticola currani n. sp. occur in fractured rock landforms and have varying degrees of troglomorphies. Sequence divergence of mitochondrial cytochrome c oxidase subunit I (COXI) clearly demonstrated populations are reproductively isolated over very short distances for the highly troglomorphic Nocticola cockingi n. sp. and Nocticola currani n. sp. and conversely, there is less isolation within the same landforms for the less troglomorphic Nocticola quartermainei n. sp.
[Mh] Termos MeSH primário: Baratas
[Mh] Termos MeSH secundário: Animais
Masculino
Filogenia
Austrália Ocidental
[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:170615
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4250.2.2


  8 / 3701 MEDLINE  
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[PMID]:28573241
[Au] Autor:Li Z; Li S; Hu L; Li F; Cheung AC; Shao W; Que Y; Leung GP; Yang C
[Ad] Endereço:Ethnic Drug Screening & Pharmacology Center, Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, P.R. China.
[Ti] Título:MECHANISMS UNDERLYING ACTION OF INJECTION, A TRADITIONAL CHINESE MEDICINE IN CARDIAC FUNCTION IMPROVEMENT.
[So] Source:Afr J Tradit Complement Altern Med;14(2):241-252, 2017.
[Is] ISSN:2505-0044
[Cp] País de publicação:Nigeria
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: As a bioactive composite extracted from American cockroach, injection (XML) is used for the treatment of congestive heart failure (CHF) in China. Clinical data has provided evidence that XML has positive inotropic properties. The objective of this study was to assess the mechanisms involved in the therapeutical effect of XML on CHF. MATERIALS AND METHODS: The effects of XML on the cardiac function in isolated rat heart were measured. A Ca imaging technology was used in rat cardiomyocytes (H9c2 cells) to reveal the role of XML on Ca channels. Meanwhile, the effects of XML on the activities of Na+/K+ ATPase and sodium/calcium exchanger were measured. In addition, the level of reactive oxygen species and the protein expressions for the superoxide dismutase and hemeoxygenase were determined in the cardiomyocytes. RESULTS: The results showed that XML increased the electrical impulse-induced [Ca ] in H9c2 cells, which was dependant on extracellular Ca and was abolished by ML218-HCl (a T-type Ca channels antagonist) but not nimodipine (a L-type Ca channels antagonist). Ouabain, a Na+/K+-ATPase inhibitor, increased the electrical impulse-induced [Ca ] , which was significantly inhibited by XML. Moreover, XML markedly inhibited the Na+/K+ ATPase activity in H9c2 cells. In addition, XML notably reduced the production of reactive oxygen species and enhanced the protein expressions of antioxidant enzymes including superoxide dismutase 1, superoxide dismutase 2 and hemeoxygenase 1 in H9c2 cell. CONCLUSION: Our findings pave the ways to the better understandings of the therapeutic effects of XML on cardiovascular system.
[Mh] Termos MeSH primário: Canais de Cálcio/metabolismo
Cálcio/metabolismo
Medicamentos de Ervas Chinesas/farmacologia
Coração/efeitos dos fármacos
Miócitos Cardíacos/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Compostos Azabicíclicos/farmacologia
Benzamidas/farmacologia
Bloqueadores dos Canais de Cálcio/farmacologia
Cardiotônicos/farmacologia
Linhagem Celular
Baratas/química
Coração/fisiologia
Heme Oxigenase-1/metabolismo
Medicina Tradicional Chinesa
Miócitos Cardíacos/metabolismo
Nimodipino/farmacologia
Ouabaína/farmacologia
Ratos
Espécies Reativas de Oxigênio/metabolismo
Trocador de Sódio e Cálcio/metabolismo
ATPase Trocadora de Sódio-Potássio/metabolismo
Superóxido Dismutase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azabicyclo Compounds); 0 (Benzamides); 0 (Calcium Channel Blockers); 0 (Calcium Channels); 0 (Cardiotonic Agents); 0 (Drugs, Chinese Herbal); 0 (ML218 compound); 0 (Reactive Oxygen Species); 0 (Sodium-Calcium Exchanger); 0 (xinmailong); 57WA9QZ5WH (Nimodipine); 5ACL011P69 (Ouabain); EC 1.14.14.18 (Heme Oxygenase-1); EC 1.15.1.1 (Superoxide Dismutase); EC 3.6.3.9 (Sodium-Potassium-Exchanging ATPase); SY7Q814VUP (Calcium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170816
[Lr] Data última revisão:
170816
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170603
[St] Status:MEDLINE
[do] DOI:10.21010/ajtcam.v14i2.26


  9 / 3701 MEDLINE  
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[PMID]:28545131
[Au] Autor:Gontang EA; Aylward FO; Carlos C; Glavina Del Rio T; Chovatia M; Fern A; Lo CC; Malfatti SA; Tringe SG; Currie CR; Kolter R
[Ad] Endereço:Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, United States of America.
[Ti] Título:Major changes in microbial diversity and community composition across gut sections of a juvenile Panchlora cockroach.
[So] Source:PLoS One;12(5):e0177189, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Investigations of gut microbiomes have shed light on the diversity and genetic content of these communities, and helped shape our understanding of how host-associated microorganisms influence host physiology, behavior, and health. Despite the importance of gut microbes to metazoans, our understanding of the changes in diversity and composition across the alimentary tract, and the source of the resident community are limited. Here, using community metagenomics and 16S rRNA gene sequencing, we assess microbial community diversity and coding potential in the foregut, midgut, and hindgut of a juvenile Panchlora cockroach, which resides in the refuse piles of the leaf-cutter ant species Atta colombica. We found a significant shift in the microbial community structure and coding potential throughout the three gut sections of Panchlora sp., and through comparison with previously generated metagenomes of the cockroach's food source and niche, we reveal that this shift in microbial community composition is influenced by the ecosystems in which Panchlora sp. occurs. While the foregut is composed of microbes that likely originate from the symbiotic fungus gardens of the ants, the midgut and hindgut are composed of a microbial community that is likely cockroach-specific. Analogous to mammalian systems, the midgut and hindgut appear to be dominated by Firmicutes and Bacteroidetes with the capacity for polysaccharide degradation, suggesting they may assist in the degradation of dietary plant material. Our work underscores the prominence of community changes throughout gut microbiomes and highlights ecological factors that underpin the structure and function of the symbiotic microbial communities of metazoans.
[Mh] Termos MeSH primário: Baratas/microbiologia
Microbioma Gastrointestinal/fisiologia
Trato Gastrointestinal/microbiologia
Metagenoma
[Mh] Termos MeSH secundário: Animais
Formigas/microbiologia
Biodiversidade
Microbioma Gastrointestinal/genética
Filogenia
RNA Ribossômico 16S
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170912
[Lr] Data última revisão:
170912
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170526
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0177189


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[PMID]:28489864
[Au] Autor:Stanley CR; Mettke-Hofmann C; Preziosi RF
[Ad] Endereço:Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom.
[Ti] Título:Personality in the cockroach Diploptera punctata: Evidence for stability across developmental stages despite age effects on boldness.
[So] Source:PLoS One;12(5):e0176564, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Despite a recent surge in the popularity of animal personality studies and their wide-ranging associations with various aspects of behavioural ecology, our understanding of the development of personality over ontogeny remains poorly understood. Stability over time is a central tenet of personality; ecological pressures experienced by an individual at different life stages may, however, vary considerably, which may have a significant effect on behavioural traits. Invertebrates often go through numerous discrete developmental stages and therefore provide a useful model for such research. Here we test for both differential consistency and age effects upon behavioural traits in the gregarious cockroach Diploptera punctata by testing the same behavioural traits in both juveniles and adults. In our sample, we find consistency in boldness, exploration and sociality within adults whilst only boldness was consistent in juveniles. Both boldness and exploration measures, representative of risk-taking behaviour, show significant consistency across discrete juvenile and adult stages. Age effects are, however, apparent in our data; juveniles are significantly bolder than adults, most likely due to differences in the ecological requirements of these life stages. Size also affects risk-taking behaviour since smaller adults are both bolder and more highly explorative. Whilst a behavioural syndrome linking boldness and exploration is evident in nymphs, this disappears by the adult stage, where links between other behavioural traits become apparent. Our results therefore indicate that differential consistency in personality can be maintained across life stages despite age effects on its magnitude, with links between some personality traits changing over ontogeny, demonstrating plasticity in behavioural syndromes.
[Mh] Termos MeSH primário: Envelhecimento
Comportamento Animal/fisiologia
Baratas/fisiologia
Personalidade/fisiologia
Assunção de Riscos
[Mh] Termos MeSH secundário: Fatores Etários
Animais
Fenótipo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170911
[Lr] Data última revisão:
170911
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170511
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0176564



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