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2644篇 您的检索式:作者名="L Costa"
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1Genomic prediction of fruit texture and training population optimization towards the application of genomic selection in apple显示文摘Texture is a complex trait and a major component of fruit quality in apple.While the major effect of MdPG1,a gene controlling firmness,has already been exploited in elite cultivars,the genetic basis of crispness remains poorly understood.To further improve fruit texture,harnessing loci with minor effects via genomic selection is therefore necessary.In this study,we measured acoustic and mechanical features in 537 genotypes to dissect the firmness and crispness components of fruit texture.Predictions of across-year phenotypic values for these components were calculated using a model calibrated with 8,294 SNP markers.The best prediction accuracies following cross-validations within the training set of 259 genotypes were obtained for the acoustic linear distance(0.64).Predictions for biparental families using the entire training set varied from low to high accuracy,depending on the family considered.While adding siblings or half-siblings into the training set did not clearly improve predictions,we performed an optimization of the training set size and composition for each validation set.This allowed us to increase prediction accuracies by 0.17 on average,with a maximal accuracy of 0.81 when predicting firmness in the‘Gala’בPink Lady’family.Our results therefore identified key genetic parameters to consider when deploying genomic selection for texture in apple.In particular,we advise to rely on a large training population,with high phenotypic variability from which a‘tailored training population’can be extracted using a priori information on genetic relatedness,in order to predict a specific target population.Morgane Roth Hélène Muranty Mario Di Guardo Walter Guerra Andrea Patocchi Fabrizio Costa 2020Horticulture Research2020,7,1:4
2Association between EGF +61A/G polymorphism and gastric cancer in Caucasians显示文摘AIM: To investigate the association between epidermal growth factor (EGF) +61A/G polymorphism and susceptibility to gastric cancer, through a cross-sectional study. METHODS: Polymerase chain reaction resctriction fragment lenght polymorphism analyses were used to genotype EGF +61 in 207 patients with gastric lesions (162 patients with gastric adenocarcinomas, 45 with atrophy or intestinal metaplasia) and 984 controls. All subjects were Caucasian. RESULTS: Genotype distribution was 23.5% for GG and 76.5% for GA/AA in the control group, 18.4% for GG and 68.6% for GA/AA in the entire group with gastric lesions and 17.9% for GG and 82.1% for GA/AA in the group with gastric adenocarcinoma. No statistically significant associations were found between EGF +61 variants and risk for developing gastric cancer [odds ratios (OR) = 1.41, 95% confidence intervals (CI): 0.90-2.21, P = 0.116]. However, the stratification of individuals by gender revealed that males carrying A alleles (EGF +61A/G or AA) had an increased risk for developing gastric cancer as compared to GG homozygous males (OR = 1.55, 95% CI: 1.05-2.28, P = 0.021). CONCLUSION: In summary, we found that males who were A carriers for EGF +61 had an increased risk for developing gastric cancer. This result may be explained by the suggestion that women secrete less gastric acid than men.Ana Paula Araújo Bruno M Costa Ana L Pinto-Correia Maria Fragoso Paula Ferreira Mário Dinis-Ribeiro Sandra Costa Rui M Reis Rui Medeiros 2011World Journal of Gastroenterology2011,17,4:3
3Inhomogeneous distribution of REE in scheelite and dynamics of Archaean hydrothermal systems (Mt. Charlotte and Drysdale gold deposits, Western Australia)显示文摘Jo?l Brugger Yann Lahaye Sylvie Costa David Lambert Roger Bateman 2000Contributions to Mineralogy and Petrology2000,,3:2
4NEW TOXOPLASMA GONDII GENOTYPES ISOLATED FROM FREE-RANGE CHICKENS FROM THE FERNANDO DE NORONHA, BRAZIL: UNEXPECTED FINDINGS显示文摘Dubey J P Rajendran C Costa D G C Ferreira L R Kwok O C H Qu D Su C Marvulo M F V Alves L C Mota R A Silva J C R 2010The Journal of Parasitology2010,,4:2
5Association between the CYBA and NOX4 genes of NADPH oxidase and its relationship with metabolic syndrome in non-alcoholic fatty liver disease in Brazilian population显示文摘Background: Oxidative stress has been implicated in the progression of severe forms of non-alcoholic fatty liver disease(NAFLD). NADPH oxidase produces reactive oxygen species. In the present study, we investigated for the first time two single nucleotide polymorphisms(SNPs) in the regulatory region of genes encoding NADPH oxidase 4(NOX4) and p22 phox(CYBA) in NAFLD.Methods: A total of 207 biopsy-proven NAFLD patients [simple steatosis(n = 27); nonalcoholic steatohepatitis(NASH)(n = 180)] were evaluated. Genomic DNA was extracted from peripheral blood cells, and polymorphisms in CYBA(unregistered) and NOX4(rs3017887) were determined by direct sequencing of PCR.Results: Associations of CYBA-675 T/A with high-density lipoprotein(HDL)(TT vs TA vs AA; P < 0.01) and triglycerides(TGL)(TT vs XA; P < 0.01) were observed only in NASH patients. For polymorphisms in the NOX4 gene, NOX4(rs3017887) CA + AA genotypes was significant associated with alanine aminotransferase(ALT)(CA + AA vs CC; P = 0.02). However, there was no association of SNPs in the CYBA and NOX4 genes encoding the NADPH oxidase system proteins and the presence of NASH. Regarding the clinical results, it was observed that the most advanced degrees of fibrosis occurred in patients diagnosed with type 2 diabetes mellitus(66.9% vs 37.5%, P < 0.01) and those who were more obese(32.2 vs 29.0 kg/m2,P < 0.01). In addition, serum glucose and insulin levels increased significantly in the presence of NASH.Conclusions: There were associations between the presence of the allele A in the NOX4 SNP and a higher concentration of ALT in the NAFLD population; between the presence of the AA genotype in the polymorphism of the CYBA-675 T/A CYBA gene and a higher level of TGL and lower HDL in NASH patients. The presence of metabolic syndrome was associated with advanced degrees of fibrosis in NAFLD patients.Fabiola Rabelo Jose Tadeu Stefano Ana Mercedes Cavaleiro Rodrigo Vieira Costa Lima Daniel Ferraz de Campos Mazo Flair Jose Carrilho Maria Lúcia Correa-Giannellac Claudia P.Oliveiraa 2018Hepatobiliary & Pancreatic Diseases International2018,17,4:2
6Effects of resistance training on the lipid profile in obese women显示文摘Costa R R Lima Alberton C Tagliari M Martins Kruel L F 2011Journal of Sports Medicine and Physical Fitness2011,,1:2
7Exogenous cytokinin application to Actinidia chinensis var. deliciosa ‘Hayward’ fruit promotes fruit expansion through water uptake显示文摘Exogenous application of a cytokinin-like compound forchlorfenuron(CPPU)can promote fruit growth,although often at the expense of dry matter(DM),an important indicator of fruit quality.Actinidia chinensis var.deliciosa‘Hayward’fruit are very responsive to CPPU treatments,but the mechanism underlying the significant fruit weight increase and associated decrease in DM is unclear.In this study,we hypothesised that CPPU-enhanced growth increases fruit carbohydrate demand,but limited carbohydrate supply resulted in decreased fruit DM.During fruit development,CPPU effects on physical parameters,metabolites,osmotic pressure and transcriptional changes were assessed under conditions of both standard and a high carbohydrate supply.We showed that CPPU increased fruit fresh weight but the dramatic DM decrease was not carbohydrate limited.Enhanced glucose and fructose concentrations contributed to an increase in soluble carbohydrate osmotic pressure,which was correlated with increased water accumulation in CPPU-treated fruit and up-regulation of water channel aquaporin gene PIP2.4 at 49 days after anthesis.Transcipt analysis suggested that the molecular mechanism contributing to increased glucose and fructose concentrations was altered by carbohydrate supply.At standard carbohydrate supply,the early glucose increase in CPPU fruit was associated with reduced starch synthesis and increased starch degradation.When carbohydrate supply was high,the early glucose increase in CPPU fruit was associated with a general decrease in starch synthesis but up-regulation of vacuolar invertase and fructokinase genes.We conclude that CPPU affected fruit expansion by increasing the osmotically-driven water uptake and its effect was not carbohydrate supply-limited.Simona Nardozza Helen L Boldingh Mark W Wohlers Andrew P Gleave Zhiwei Luo Guglielmo Costa Elspeth A MacRae Michael J Clearwater Annette C Richardson 2017Horticulture Research2017,4,1:2
8A novel transcription factor, T- bet, directs Thl lineage commitement显示文摘SZABO S J KIM S T COSTA G L 2000Cell2000,100,6:1
9Effect of No-Tillage on Some Soil Physical Properties of a Structural Degraded Petrocalcic Paleudoll of the Southern 'Pampa' of Argentina显示文摘 Costa J L Garcia F O 2000Soil & tillage research2000,54,:1
10Hysteroscopy in menopause: analysis of the techniques and accuracy of the method 显示文摘Costa Hde L Costa LO 2008Rev Bras Ginecol Obstet2008,30,10:1
11Characteriza- tion of Fiber Laser Welds in X100 Pipeline Steel 显示文摘Miranda R Costa A Quintino L 2009Materials and Design2009,30,7:1
12Impact of skeletal complications on patients' quality of life, mobility, and functional independence显示文摘Costa L Badia X Chow E Lipton A Wardley A 2008Support Care Cancer2008,16,8:1
13Levodopa improves time-based prospective memory in Parkinson's disease显示文摘Costa A Peppe A Brusa L 2008J Int Neuropsychol Soc2008,14,4:1
14Counterbalancing patient demands with evidence:Results from a pan- Canadian randomized clinical trial of brief sup- portive - expressive group psyehothera-py for women with systemic lupus ery- thematosus显示文摘Dobkin PL Da Costa D Joseph L etal 2002Ann Behav Med2002,24,2:1
15A Control-volume based Finite Element Method for Three-dimensional Incompressible Turbulent Fluid Flow, Heat Transfer and Related Phenomena 显示文摘Costa V A F Oliveira L A Figueiredo A R 1995Int J Numer Mesh Fluid1995,21,5:1
16Melia azedarach extract as an antifeedant to Bemisia tabaci (Homoptera:Aleyrodidae)显示文摘Nardo E A B de Costa A S Lourencao A L 1997Florida Entomologist1997,80,:1
17The formation and failure of natural dams 显示文摘Costa J E Schuster R L 1988Geological Society of America Bulletin1988,,100:1
18Fatigue behaviour of AA6082 friction stir welds under variable loadings显示文摘COSTA J D FERREIRA J A M BORREGO L P 2012In- ternational Journal of Fatigue2012,37,:1
19Ratio between positive lymph no- and total dissected axillaries lymph nodes as an independent prognostic factor for disease free survival in patients with breast caneer显示文摘Megale Costa L J Soares H P Gaspar H A 2004Am J Clin Oncol2004,27,3:1
20Does teaching style matter? A randomised trial of group discussion versus lectures in orthopaedic undergraduate teaching显示文摘COSTA M L RENSBURG RUSHTONL N 2007Medical Education2007,41,:1
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