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104篇 您的检索式:作者名="Victoria R"
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1Evaluation of VEGF gene polymorphisms and proliferative diabetic retinopathy in Mexican population显示文摘● AIM: To assess if the included vascular endothelial growth factor(VEGF) polymorphisms rs3025035, rs3025021 and rs2010963 are associated to proliferative retinopathy in a Mexican population with type 2 diabetes mellitus(T2DM).● METHODS: A case-control study was conducted in adult individuals with T2 DM associated to proliferative retinopathy or non-proliferative retinopathy from Oct. 2014 to Jun. 2015 from the Retina Department of the Asociation to Prevent Blindness in Mexico. The selected patients were adults with a diagnosis of T2 DM ≥5y. All subjects had a comprehensive ocular examination and the classification of the retinopathy severity was made considering the Early Treatment Diabetic Retinopathy Study(ETDRS) standardization protocols. Genomic DNA was extracted from whole fresh blood. All samples were genotyped by q PCR for selected VEGF polymorphisms. Hardy-Weinberg equilibrium was calculated by comparing Chi-square values between the expected and the observed values for genotype counts.● RESULTS: In total 142 individuals were enrolled, 71 individuals with T2 DM and associated proliferative retinopathy and 71 individuals with non-proliferative retinopathy. One-sided Fisher's exact test was performed for rs3025021[OR(95% CI)=0.44(0.08-2.2); P=0.25] and rs2010963 [OR(95% CI)=0.63(0.25-1.6); P=0.23]. The minor allelic frequencies obtained were 26% for rs3025021, 10% for rs3025035 and 61% for rs2010963. The pairwise linkage disequilibrium between the three SNP was assessed, and was as follows: rs3025021 vs rs3025035: D'=1.0, r^2=0.1043, P≤0.0001; rs3025021 vs rs2010963: D'=0.442, r^2=0.0446, P=0.149; rs3025035 vs rs2010963: D'=0.505, r^2=0.0214, P=0.142.● CONCLUSION: This is the first analysis involving VEGFA polymorphisms and proliferative diabetic retinopathy in a Mexican population. A major finding of the present study is that none of the polymorphisms studied was significantly associated with proliferative retinopathy. Based on these results, we can infer that different populations have different associations for the same polymorphisms.Roberto Gonzalez-Salinas Maria C Garcia-Gutierrez Gerardo Garcia-Aguirre Virgilio Morales-Canton Raul Velez-Montoya Vidal R Soberon-Ventura Victoria Gonzalez Rodrigo Lechuga Pablo Garcia-Solis David G Garcia-Gutierrez Marco Vinicio Garcia-Solis Manuel Saenz de Viteri Juan C Solis-S 2017International Journal of Ophthalmology(English edition)2017,10,1:12
2Pathophysiology of cerebral oedema in acute liver failure显示文摘Cerebral oedema is a devastating consequence of acute liver failure(ALF)and may be associated with the development of intracranial hypertension and death.In ALF,some patients may develop cerebral oedema and increased intracranial pressure but progression to lifethreatening intracranial hypertension is less frequent than previously described,complicating less than one third of cases who have proceeded to coma since the advent of improved clinical care.The rapid onset of encephalopathy may be dramatic with the development of asterixis,delirium,seizures and coma.Cytotoxic and vasogenic oedema mechanisms have been implicated with a preponderance of experimental data favouring a cytotoxic mechanism.Astrocyte swelling is the most consistent neuropathological finding in humans with ALF and ammonia plays a definitive role in the development of cytotoxic brain oedema.The mechanism(s)by which ammonia induces astrocyte swelling remains unclear but glutamine accumulation within astrocytes has led to the osmolyte hypothesis.Current evidence also supports an alternate‘Trojan horse’hypothesis,with glutamine as a carrier of ammonia into mitochondria,where its accumulation results in oxidative stress,energy failure and ultimately astrocyte swelling.Although a complete breakdown of the blood-brain barrier is not evident in human ALF,increased permeation to water and other small molecules such as ammonia has been demonstrated resulting from subtle alterations in the protein composition of paracellular tight junctions.At present,there is no fully efficacious therapy for cerebral oedema other than liver transplantation and this reflects our incomplete knowledge of the precise mechanisms underlying this process which remain largely unknown.Teresa R Scott Victoria T Kronsten Robin D Hughes Debbie L Shawcross 2013World Journal of Gastroenterology2013,19,48:8
3Maize biochars accelerate short-term soil nitrogen dynamics in a loamy sand soil显示文摘Victoria Nelissen Tobias Rütting Dries Huygens Jeroen Staelens Greet Ruysschaert Pascal Boeckx 2012Soil Biology and Biochemistry2012,,:4
4Heterogeneity in mouse spasmolytic polypeptide-expressing metaplasia lineages identifies markers of metaplastic progression显示文摘Victoria G Weis Josane F Sousa Bonnie J LaFleur Ki Taek Nam Jared A Weis Paul E Finke Nadia A Ameen James G Fox James R Goldenring 2013Gut2013,,9:3
5Venous and arterial disease in inflammatory bowel disease显示文摘Victoria P Tan Alvin Chung Bryan P Yan Peter R Gibson 2013J Gastroenterol Hepatol2013,,7:3
6Macrophage secretory products induce an inflammatory phenotype in hepatocytes显示文摘AIM:To investigate the influence of macrophages on hepatocyte phenotype and function.METHODS:Macrophages were differentiated from THP-1 monocytes via phorbol myristate acetate stimulation and the effects of monocyte or macrophageconditioned medium on HepG2 mRNA and protein expression determined.The in vivo relevance of these findings was confirmed using liver biopsies from 147 patients with hepatitis C virus(HCV)infection.RESULTS:Conditioned media from macrophages,but not monocytes,induced a transient morphological change in hepatocytes associated with upregulation of vimentin(7.8±2.5-fold,P=0.045)and transforming growth factor(TGF)-β1(2.6±0.2-fold,P<0.001)and downregulation of epithelial cadherin(1.7±0.02-fold,P=0.017)mRNA expression.Microarray analysis revealed significant upregulation of lipocalin-2(17-fold,P <0.001)and pathways associated with inflammation,and substantial downregulation of pathways related to hepatocyte function.In patients with chronic HCV,realtime polymerase chain reaction and immunohistochemistry confirmed an increase in lipocalin-2 mRNA(F0 1.0 ±0.3,F1 2.2±0.2,F2 3.0±9.3,F3/4 4.0±0.8,P= 0.003)and protein expression(F1 1.0±0.5,F2 1.3± 0.4,F3/4 3.6±0.4,P=0.014)with increasing liver injury.High performance liquid chromatography-tandem mass spectrometry analysis identified elevated levels of matrix metalloproteinase(MMP)-9 in macrophageconditioned medium,and a chemical inhibitor of MMP-9 attenuated the change in morphology and mRNA expression of TGF-β1(2.9±0.2 vs 1.04±0.1,P<0.001) in macrophage-conditioned media treated HepG2 cells.In patients with chronic HCV infection,hepatic mRNA expression of CD163(F0 1.0±0.2,F1/2 2.8±0.3,F3/4 5.3±1.0,P=0.001)and MMP-9(F0 1.0±0.4,F1/2 2.8±0.3,F3/4 4.1±0.8,P=0.011)was significantly associated with increasing stage of fibrosis.CONCLUSION:Secreted macrophage products alter the phenotype and function of hepatocytes,with increased expression of inflammatory mediators,suggesting that hepatocytes actively participate in liver injury.Michelle Melino Victoria L Gadd Gene V Walker Richard Skoien Helen D Barrie Dinesh Jothimani Leigh Horsfall Alun Jones Matthew J Sweet Gethin P Thomas Andrew D Clouston Julie R Jonsson Elizabeth E Powell 2012World Journal of Gastroenterology2012,18,15:3
7Paraoxonasel (PON1) poly- morphisms and prostate cancer in the CPS-I INutrition Cohort 显示文摘Victoria L Stevens Carmen R 2008Prostate2008,,68:1
8The use of stable isotopes in studies of nutrient cycling:Carbon isotope composition of Amazon varzea sediments显示文摘VICTORIA R L MARTINELLI L A TRIVELIN P C 1992Biotropica1992,24,:1
9Dicaffeoyltartaric acid analogues inhibit human immunodeficiency virus type 1 ( HIV - 1 ) inte-grase and HIV - 1 replication at nontoxic concentrations 显示文摘REINKE R A KING P J VICTORIA J G 2002J Med Chem2002,45,:1
10Synthesis and application of core-shell particles as toughening agents for epoxies显示文摘Julie Y Qian Pearson R A Victoria L 1995Appl Polym Sci1995,58,2:1
11Spread of metals through an invertebrate food chain as influenced by a plant that hyperaccumulates nickel显示文摘Lynsey R Peterson Victoria Trivett Alan J M Baker 2003Chemoecology2003,,13:1
12Electronic structure of Ni2 MnIn for use in spin injection显示文摘Kilian K A Victoria R H 0,,09:1
13Using stable isotopes to determine sources of evaporated water to the atmosphere in the Amazon basin显示文摘MARTINELLI L A VICTORIA R L STERNBERG L S L 1996Journal of Hydrology1996,183,3:1
14查看详情显示文摘Andrew R P Victoria L W Dominique D 0,,:1
15IL-6 mediates hypoferrenfia of inflammation by inducing the synthesis of the iron regulatory hormone hepcidin 显示文摘Elizabeta N Seth R Victoria G 2004J Clin Invest2004,113,:1
16Incidence of additional primary cancers in patients with invasive intraductal papillary mucinous neoplasms and sporadic pancreatic adenocarcinomas 显示文摘Taylor S R FACS Victoria S 2007J Am Coll Surg2007,204,5:1
17Elimination of polycyclic aromatic hydrocarbons by bleaching of olive pomace oil显示文摘MANUEL L C ISABEL V A VICTORIA R M 2003Eur J Lipid Sci Technol2003,105,1:1
18Chemical and mineralogical composition of Amazon River floodplain sediments, Brazil 显示文摘Martinelli L Victoria R L Dematte J L I 1993Applied Geochemistry1993,8,:1
19CpG Island Methylator Phenotype is Associated With Response to Adjuvant Irinotecan-Based Therapy for Stage 3 Colon Cancer显示文摘Stacey Shiovitz Monica M. Bertagnolli Lindsay A. Renfro Eunmi Nam Nathan R. Foster Slavomir Dzieciatkowski Yanxin Luo Victoria Valinluck Lao Raymond J. Monnat Mary J. Emond Nancy Maizels Donna Niedzwiecki Richard M. Goldberg Leonard B. Saltz Alan Venook R 2014Gastroenterology2014,,:1
20Spontaneous mutation rate to new length alleles at tandem repetitive hypervariable loci in human DNA显示文摘ALEC J J NICOLA J R VICTORIA W 1988Nature1988,332,:1
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