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| 1 | Mucosal bacterial microflora and mucus layer thickness in adolescents with inflammatory bowel disease显示文摘AIM:To assess the mucosa-associated bacterial microflora and mucus layer in adolescents with inflammatory bowel disease(IBD) .METHODS:Sixty-one adolescents(mean age 15 years,SD ± 4.13) were included in the study.Intestinal biopsies from inflamed and non-inflamed mucosa of IBD patients and from controls with functional abdominal pain were cultured under aerobic and anaerobic conditions.The number of microbes belonging to the same group was calculated per weight of collected tissue.The mucus thickness in frozen samples was measured under a fluorescent microscope.RESULTS:The ratios of different bacterial groups in inflamed and non-inflamed mucosa of IBD patients and controls were specific for particular diseases.Streptococcus spp.were predominant in the inflamed mucosa of Crohn's disease(CD) patients(80% of all bacteria) ,and Lactobacillus spp.were predominant in ulcerative colitis patients(90%) .The differences were statistically significant(P = 0.01-0.001) .Lower number of bifidobacteria was observed in the whole IBD group.A relation was also found between clinical and endoscopic severity and decreased numbers of Lactobacillus and,to a lesser extent,of Streptococcus in biopsies from CD patients.The mucus layer in the inflamed sites was significantly thinner as compared to controls(P = 0.0033) and to non-inflamed areas in IBD patients(P = 0.031) .CONCLUSION:The significantly thinner mucosa of IBD patients showed a predominance of some aerobes specific for particular diseases,their numbers decreased in relation to higher clinical and endoscopic activity of the disease. | Krzysztof Fyderek Magdalena Strus Kinga Kowalska-Duplaga Tomasz Gosiewski Andrzej Wedrychowicz Urszula Jedynak-Wasowicz Malgorzata Sladek Stanislaw Pieczarkowski Pawel Adamski Piotr Kochan Piotr B Heczko | 2009 | World Journal of Gastroenterology2009，15，42： | 14 |
| 2 | Virulence factors of Enterococcus strains isolated from patients with inflammatory bowel disease显示文摘AIM: To determine the features of Enterococcus that contribute to the development and maintenance of the inflammatory process in patients with inflammatory bowel disease (IBD). METHODS: Multiplex polymerase chain reaction (PCR) was applied to assess the presence of genes that encode virulence factors [surface aggregating protein (asa1), gelatinase (gelE), cytolysin (cylA), extracellular surface protein (esp) and hyaluronidase (hyl)] in the genomic DNA of 28 strains of Enterococcus isolated from the intestinal tissues of children with IBD (n =16) and of children without IBD (controls; n = 12). Additionally, strains with confirmed presence of the gelE gene were tested by PCR for the presence of quorum sensing genes (fsrA, fsrB, fsrC) that control the gelatinase production. Gelatinase activity was tested on agar plates containing 1.6% gelatin. We also analysed the ability of Enterococcus strains to release and decompose hydrogen peroxide (using Analytical Merckoquant peroxide test strips) and tested their ability to adhere to Caco-2 human gut epithelium cells and form biofilms in vitro. RESULTS: A comparison of the genomes of Enterococcus strains isolated from the inflamed mucosa of patients with IBD with those of the control group showed statistically significant differences in the frequency of theasa1 gene and thegelE gene. Furthermore, the cumulative occurrence of different virulence genes in the genome of a single strain ofEnterococcus isolated from the IBD patient group is greater than in a strain from the control group, although no significant difference was found. Statistically significant differences in the decomposition of hydrogen peroxide and adherence to the Caco-2 epithelial cell line between the strains from the patient group and control group were demonstrated. The results also showed that profuse biofilm production was more frequent amongEnterococcus strains isolated from children with IBD than in control strains. CONCLUSION: Enterococcus strains that adhere strongly to the intestinal epithelium, form biofilms and possess antioxidant defence mechanisms seem to have the greatest influence on the inflammatory process. | Edyta Golińska Anna Tomusiak Tomasz Gosiewski Gra yna Wiecek Agnieszka Machul Diana Mikoajczyk Magorzata Bulanda Piotr B Heczko Magdalena Strus | 2013 | World Journal of Gastroenterology2013，19，23： | 8 |
| 3 | Temperature de- pendence of reversible field-induced strain in Ni-Mn- Ga single crystal显示文摘 | Straka L Heczko O Hannul S P | 2006 | Scripta Materialia2006，54，8： | 1 |
| 4 | Strain and con- current magnetization changes in magnetic shape memory Ni-Mn-Ga single crystals-experiment and model 显示文摘 | Heczko O Straka L Aaltio I | 2008 | Materiais Science and Engineering A- Structural Materials Properties Microstructure and Processing2008，481，1： | 1 |
| 5 | Conversion of OXA- 66 into OXA-82 in clinical isolates and association with altered carbapenem susceptibility 显示文摘 | Zander E Chmielarczyk A Heczko P | 2013 | J Antimicrob Cheraother2013，68，2： | 1 |
| 6 | Coexistence of ferromagnetic and antiferromagnetic order in Mn-dopedNi2Mn-Ga显示文摘 | ENKOVAARA J HECZKO O AYUELA A | 2003 | Physical Review B2003，67，21： | 1 |
| 7 | Effect of temperature on magnetic properties of Ni-Mn-Ga magnetic shape memory (MSM) alloys显示文摘 | HECZKO O ULLAKKO K | 2004 | IEEE Transactions on Magnetics2004，37，4： | 1 |
| 8 | Different microstructures of mobile twin boundaries in 10M modulated Ni-Mn-Ga mar- tensite显示文摘 | Heczko O Straka L Seiner H | 2013 | Acta Mater2013，61，2： | 1 |
| 9 | Magnetic shape memory effect in thin foils显示文摘 | HECZKO O SOROKA A HANNULA S | 2008 | Applied Physics Letters2008，93，2： | 1 |
| 10 | Bacterial infections of the lower genital tract in fertile and infertile women from the southeastern Poland显示文摘 | TOMUSIAK A HECZKO P B JANECZKO J | 2013 | Ginekologia Polska2013，84，5： | 1 |
| 11 | Temperature dependence of magnetic anisotropy in Ni-Mn -Ga alloys exhibiting giant field-induced strain显示文摘 | Ladislav Straka Natalyia Lanska | 2002 | J Appl Phys2002，91，10： | 1 |
| 12 | In vitro antagonistic effect of Lactobacilli on organisms associated with bacterial vaginosis 显示文摘 | STRUS M MALINOWSKA M HECZKO P B | 2002 | J Report Med2002，47，1： | 1 |
| 13 | Relation between structure, magnetization process and magnetic shape memory effect of various martensites occurring in Ni-Mn-Ga alloys显示文摘 | Heczko O Straka L Ullakko K | 2003 | Journal DE Physique IV2003，112，2： | 1 |
| 14 | Superelastic response of Ni-Mn- Ga martensite in magnetic fields and a simple model 显示文摘 | Straka L Heczko O | 2003 | IEEE Transactions on Magnetics2003，39，5： | 1 |
| 15 | 显示文摘 | Heczko O Straka L Ullakko K | 2002 | J Appl Phys2002，91，： | 1 |
| 16 | Helicobacter pylori -infected human antral primary cell cultures:effect on gas trin cell function 显示文摘 | Heczko U Meloche RM | 1998 | Am J Physiol Gastrointest Liver Physiol1998，270，： | 1 |
| 17 | Decreased apoptosis in the ileum and ileal Peyer's patches:a feature after infection with rabbit enteropathogenic Escherichia coli O103显示文摘 | Heczko U Carthy CM O'Brien BA | 2001 | Infect Immun2001，69，7： | 1 |
| 18 | Structural analysis of the Lactobacillus rhamnosus strain KL37C exopolysacclaaride 显示文摘 | Lipinski T Jones C Lemercinier X Korzeniowska-Kowal A Strus M Rybka J Gamian A Heczko PB | 2003 | Carbohydr Res2003，338，7： | 1 |
| 19 | Characteristics of Helicobacter pylori attachmentto human primary antral epithelial cells显示文摘 | Ursula Heczko Valerie C Smith R Mark Meloche Alison M.J Buchan B.Brett Finlay | 2000 | Microbes and Infection2000，，14： | 1 |
| 20 | Giant field-induced reversible strain in magnetic shape memory NiMnGa alloy 显示文摘 | Heczko O Sozinov A Ullakko K | 2000 | IEEE Transactions on Magnetics2000，36，5： | 1 |
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