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141篇 您的检索式:作者名="Baras M"
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1Helicobacter pylori in dental plaque and stomach of patients from Northern Brazil显示文摘AIM: To establish whether virulence factor genes vacA and cagA are present in Helicobacter pylori (H. pylori) retrieved from gastric mucosa and dental plaque in pa-tients with dyspepsia. METHODS: Cumulative dental plaque specimens and gastric biopsies were submitted to histological exami-nation, rapid urease test and polymerase chain reac-tion (PCR) assays to detect the presence of cagA and vacA polymorphisms.RESULTS: Detection of H. pylori from dental plaque and gastric biopsy samples was greater by PCR com-pared to histological examination and the rapid ure-ase test. DNA from H. pylori was detected in 96% of gastric mucosa samples and in 72% of dental plaque samples. Sixty-three (89%) of 71 dental plaque sam-ples that were H. pylori-positive also exhibited identical vacA and cagA genotypes in gastric mucosa. The most common genotype was vacAs1bm1 and cagA positive, either in dental plaque or gastric mucosa. These viru-lent H. pylori isolates were involved in the severity of clinical outcome.CONCLUSION: These pathogenic strains were found simultaneously in dental plaque and gastric mucosa, which suggests that gastric infection is correlated with the presence of H. pylori in the mouth.Mnica Baraúna Assumpo Luisa Caricio Martins Hivana Patricia Melo Barbosa Katarine Antonia dos Santos Barile Sintia Silva de Almeida Paulo Pimentel Assumpo Tereza Cristina de Oliveira Corvelo 2010World Journal of Gastroenterology2010,16,24:29
2Interleukin-1 and TNF-α polymorphisms and Helicobacter pylori in a Brazilian Amazon population显示文摘AIM:To study the association between Interleukin-1(IL-1)and tumor necrosis factor(TNF)-αpolymorphisms,infection by Helicobacter pylori(H pylori)and the development of gastrointestinal diseases.METHODS:Genomic DNA was extracted from the peripheral blood of 177 patients with various gastrointestinal diseases and from 100 healthy volunteers.The polymorphisms in IL-1βand TNF-αgenes were analyzed using the polymerase chain reactionrestriction fragment length polymorphism method(PCRRFLP)and those from IL-1RN with PCR.The presence of infection due to H pylori and the presence of the CagA toxin were detected by serology.The histopathological parameters in the gastric biopsies of the patients were according to the Sydney classification.RESULTS:A comparison of the frequencies of the different polymorphisms studied among the patients and the control group demonstrated that the allele IL1RN*2 was more frequent among patients with gastric ulcers and adenocarcinoma.Carriers of the allele ILRN*2 and those with reactive serology for anti-CagA IgG had a greater risk of developing peptic ulcer and gastric adenocarcinoma,as well as a higher degree of inflammation and neutrophilic activity in the gastric mucosa.CONCLUSION:Our results indicate a positive association between IL-1RN gene polymorphism and infection by positive H pylori CagA strains and the development of gastric ulcers and adenocarcinoma.Hivana Patricia Melo Barbosa Luisa Caricio Martins Sidney Emanuel Batista dos Santos Samia Demachki Mnica Baraúna Assumpo Charliana Damasceno Arago Tereza Cristina de Oliveira Corvelo 2009World Journal of Gastroenterology2009,15,12:17
3Static output feedback stabilization with H~ performance for linear discrete-time systems 显示文摘Bara G I Boutayeb M 2005IEEE Transactions on Automatic Control2005,50,2:1
4Application of ERICPCR for the comparison of isolates of Haemophilus parasuis显示文摘Raffie M Bara M Stephens C P 2000Aust Vet J2000,78,12:1
5The prevalence of a history of child sexual abuse among adults visiting family practitioners in Israel显示文摘Schein M Biderman A Baras M 2000Child Abuse Negl2000,24,5:1
6Observers for a class of Lipschitz systems with extension to performance analysis显示文摘Zemouche A Boutayeb M Bara G I 0,,:1
7Penetration of strain-hardening targets with rigid spherical-nose rods显示文摘FORRESTAL M J BARA N S LUK V K 1991J Appl Meeh1991,58,1:1
8Biochemical and pharmacologic rationale for the development of a synthetic heparin pentasaccharide显示文摘WALENGA J M JESKE W P BARA L 1997Thromb Res1997,86,:1
9Experimental and Numerical Study of Viscous Flow Field Around anAdvancing Vertical Circular Cylinder Piercing a Free-Surface显示文摘INOUE M BARA N HIMENO Y 1993Journal of the Kansai Society of Naval Architects1993,,220:1
10Application of ERIC-PCR for the comparison of isolates ofHaemophilus parasuis显示文摘 Bara M Stephens CP 2000Aust Vet J2000,78,12:1
11Application of ERICPCR for the comparison of isolates of Haemophilus parasuis显示文摘Rafiee M Bara M Stephens C P 2000Aust Vet J2000,78,12:1
12Physical-layer authentication 显示文摘Yu P L Baras J S Sadler B M 2008IEEE Trans on Information Forensics and Security2008,3,1:1
13In vitro effect on heptest of low molecular weight heparn显示文摘Bara L Mardiguian J Samama M 1990Thromb Res1990,57,:1
14Generation of Precise Wide-Area Geocoded Elevation Models with ERS SAR Data显示文摘Bara M Mora O Romero M 1999IGAILSS''991999,1999,:1
15Anticholinergic drugs for wheeze in children under the age of two years显示文摘EVERARD ML BARA A KURIAN M 2005Cochrane Database Syst Rev2005,18,00:1
16Magnesium regulation of Ca'smooth muscle and endothelial cells of human allantochorial placervessels显示文摘Bara M Guiet-Sara A 2001Magnes Res2001,14,2:1
17Properties of alkylimidazoles as solvents for CO 2 capture and comparisons to imidazolium-based ionic liquids显示文摘SHANNON M S BARA J E 2011Industrial & Engineering Chemistry Research2011,50,14:1
18Diefarg antioxidants fail in protection against oxidative genetic damage in in vifro evalnation 显示文摘 Savia bara H AshidaH 2000Biosci Bionechnol Bio Chem2000,64,7:1
19Ultrastructure of a model of thrombogenesis induced by mechanical injury显示文摘Le Menn R Bara L Samama M 1981J Submicrosc Cytol1981,13,4:1
20A vaccine manufacturer's approach to address medical needs related to seasonal and pandemic influenza viruses显示文摘Baras B Bouveret N Devaster J M 2008Influenza and other Respiratory viruses2008,2,6:1
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