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Clinical and Experimental Medicine

, Volume 5, Issue 4, pp 169–176 | Cite as

Association of interleukin-1B and interleukin-1RN polymorphisms with gastric cancer in a high-risk population of Costa Rica

  • W. Alpízar-AlpízarEmail author
  • G. I. Pérez-Pérez
  • C. Une
  • P. Cuenca
  • R. Sierra
ORIGINAL

Abstract

Several risk factors have been associated with gastric cancer, among them Helicobacter pylori infection. This bacterium yields inflammation, the degree of which depends on the bacterial strain and the severity of the host response. The inflammatory response involves a complex cytokine network. Recently, polymorphisms of the genes coding for interleukin-1β (IL-1B), interleukin-1Ra (ILRN) and interleukin-10 have been associated with an increased risk of gastric cancer. In order to determine the association of the IL-1B, IL-1RN and IL-10 polymorphisms with gastric cancer in a high-risk Costa Rican population, we analysed purified DNA of 58 gastric cancer patients, 99 controls and 41 patients classified as group I or II, according to the Japanese classification. Genotyping was carried out by PCR, PCR-RFLP and pyrosequencing analysis. We did not find any association of the IL-1B-31, IL-1B-511 and IL-10 polymorphisms with the risk for developing gastric cancer in the studied population. Carriers of the IL-1B+3954T/– had an increased risk for developing gastric cancer (OR 3.7; 95%CI: 1.34–10.2). Also we found an increased risk for developing gastric cancer for allele 2 heterozygotes of the IL-1RN (OR 2.94; 95%CI: 1.09–7.93). This is the first time that IL-1B+3954 has been associated with gastric cancer. This is one of the first studies trying to describe the role played by IL-1B, IL-1RN and IL-10 genetic polymorphisms in gastric cancer in one of the highest risk American countries. Further investigation on American countries is needed.

Key words

Interleukin-1B polymorphisms Interleukin-1RN polymorphisms Interleukin-10 polymorphisms Helicobacter pylori Gastric cancer Pro-inflammatory response 

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Copyright information

© Springer-Verlag Italia 2005

Authors and Affiliations

  • W. Alpízar-Alpízar
    • 1
    Email author
  • G. I. Pérez-Pérez
    • 2
  • C. Une
    • 1
  • P. Cuenca
    • 1
  • R. Sierra
    • 1
  1. 1.Instituto de Investigaciones en Salud (INISA)Universidad de Costa RicaSan Pedro, San JoséCosta Rica
  2. 2.Division of Infectious DiseasesNew York University School of MedicineNew YorkUSA

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