SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Uribe A.) srt2:(1995-1999)"

Sökning: WFRF:(Uribe A.) > (1995-1999)

  • Resultat 1-10 av 21
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  •  
4.
  •  
5.
  • Brannstrom, J, et al. (författare)
  • Helicobacter pylori stimulates DNA synthesis in a small intestinal cell line in vitro
  • 1998
  • Ingår i: Digestion. - : S. Karger AG. - 0012-2823 .- 1421-9867. ; 59:1, s. 33-39
  • Tidskriftsartikel (refereegranskat)abstract
    • <b>Background:</b> <i>Helicobacter pylori</i>, which causes gastritis and peptic ulcer, seems to be an important factor in the pathogenesis of gastric cancer and MALT lymphoma. Thus our aim was to examine whether <i>H. pylori</i> influences DNA synthesis in epithelial cells in vitro. <b>Methods:</b> Sonicated and water extracts of <i>H. pylori</i> (cytotoxic strains NCTC 11637, 88-23 and A5, and a noncytotoxic isogenic mutant of A5, A5 vac A) were diluted to a final concentration of 1/1,000, 1/100, 1/50 and 1/10. Water extracts of <i>Escherichia coli</i> were used as reference. IEC-6 cells were incubated during 24 h with fragments of <i>H. pylori</i> or extracts of the concentrations described above. The cells were labeled with <sup>3</sup>H-methylthymidine for 4 h and processed for autoradiography. DNA synthesis was evaluated by the labeling index (LI). <b>Results:</b> The LI% of controls was 15.6 ± 5.1%. All the water extracts and sonicated strains of <i>H. pylori</i> increased the LI% in a dose-dependent manner (p < 0.001). The highest concentrations of the sonicated strains tended to reduce the LI%, although these values were still higher than those of the control group. The water extracts of <i>E. coli</i> increased the LI% in a dose-dependent manner (p < 0.0001). <b>Conclusion:</b> <i>H. pylori</i> stimulates DNA synthesis in epithelial cells in vitro, but no association was found with the presence of cytotoxin production. Our results suggest that hitherto unknown components of <i>H. pylori</i> may contribute to the increase in cell proliferation observed in gastritis and to the development of MALT lymphoma and gastric cancer.
  •  
6.
  •  
7.
  •  
8.
  •  
9.
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 21

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy