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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The mouthwash: a non-invasive sampling method to study cytokine gene polymorphisms.

BACKGROUND: We describe a simple, non-invasive mouthwash sampling method for rapid DNA isolation to detect cytokine gene polymorphisms. In the present paper, interleukin- 1beta(IL-1B) and interleukin-1 receptor antagonist (IL-1RN) gene polymorphisms were studied. METHODS: Two mouthwash samples and blood samples were collected from 11 healthy individuals. The second mouthwash sample was stored for 7 days at room temperature. Polymerase chain reaction amplification was used to identify a bi-allelic polymorphism at position +3953 in the IL-1B gene and a variable number of tandem repeats (VNTR) polymorphism in the IL-1RN gene. RESULTS: Our results show that the typing of these cytokine gene polymorphisms using DNA isolated from mouthwash samples did not differ from those obtained by a phenol/chloroform isolation method from EDTA anti-coagulated blood. Moreover, reliable results from mouthwash samples were obtained after storage for at least 7 days at room temperature. CONCLUSIONS: Mouthwash can be the method of choice to study gene polymorphisms in periodontitis and other chronic inflammatory diseases.[1]


  1. The mouthwash: a non-invasive sampling method to study cytokine gene polymorphisms. Laine, M.L., Farré, M.A., Crusius, J.B., van Winkelhoff, A.J., Peña, A.S. J. Periodontol. (2000) [Pubmed]
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