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  • 2005-2009  (3)
Publikationsart
Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Mucosal proinflammatory cytokine and chemokine expression of gastroduodenal lesions in Crohn's disease (2005)
    Oxford, UK : Blackwell Publishing Ltd
    Alimentary pharmacology & therapeutics 21 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background:  The stomach and the duodenum are frequent sites of involvement by diminutive lesions in Crohn's disease (CD).Aim:  To assess mucosal proinflammatory cytokines and chemokines in gastroduodenal lesions of CD.Methods:  13C-Urea breath test and upper endoscopy were performed in 29 CD patients and seven control subjects, and biopsy specimens were obtained from the gastric cardia and the duodenum. Histology and mucosal levels of IL-1β, IL-8/CXCL8 and RANTES/CCL5 were assessed and compared according to the presence of gastric cardial lesion [bamboo joint-like appearance (BJA)] and duodenal lesion (notched appearance, aphthous erosion and polypoid lesion). In 11 CD patients, these procedures were repeatedly performed after administration of famotidine.Results:  H. pylori was less frequently positive in CD patients than in controls (10% vs. 71%, P = 0.003). Prevalence of cardial and duodenal lesion was significantly higher in CD than in controls (59% vs. 0%, P = 0.008 for gastric lesion; 45% vs. 0%, P =0.034 for duodenal lesion). There were no differences in IL-1β, IL-8 and RANTES between CD and controls. Duodenal mucosal IL-1β and IL-8 were significantly higher in positive duodenal lesion than in negative duodenal lesion. However, there were no such differences with respect to cardial lesions. Endoscopic findings remained unchanged after administration of famotidine, while there was a trend towards decreases in IL-1β and IL-8 in the gastric cardia.Conclusions:  The pathogenesis of diminutive lesions of CD may be different between the stomach and the duodenum. Famotidine may not have a therapeutic effect on duodenal lesion in CD.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02480.x
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  • 2
    Digitale Medien
    Digitale Medien
    Inguinal dedifferentiated liposarcoma with meningothelial-like whorls and metaplastic bone formation (2005)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 46 (2005), S. 0 
    Details
    ISSN: 1365-2559
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2559.2005.02022.x
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  • 3
    Digitale Medien
    Digitale Medien
    Negative Refraction in Photonic Crystals (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 55 (Sept. 2008), p. 91-100 
    Details
    ISSN: 1662-0356
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Allgemeine Naturwissenschaft , Technik allgemein
    Notizen: Light focusing characteristics of a negative refractive lens fabricated out of asilicon-on-insulator photonic crystal (PC) slab are investigated theoretically andexperimentally. It focuses in the near infrared, but the focal spot is degraded by a lensaberration. To reduce the aberration, we designed a composite PC that gives rise to anarrower focal spot. In addition, two unique functions of this lens are demonstrated:refocusing outside of the PC and parallel focusing, enabling image transfer and realimage formation, respectively. These results prove the feasibility of an in-plane freespace optical network based on negative refraction
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.55.91.pdf
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