| Literature DB >> 17110039 |
Joong Jean Park1, Jaehee Lee, Myung Ah Kim, Seung Keun Back, Seung Kil Hong, Heung Sik Na.
Abstract
TRPV1 is a cation channel which is activated by temperature (> or =42 degrees C) and capsaicin. In the present study, we found a person with total insensitivity to capsaicin and attempted to unravel its causes. The expression levels of TRPV1 protein and mRNA in the cells of the person's buccal mucosa were less than half of those in a normal subject. Sequential analysis of mRNA and genomic DNA revealed several point mutations mostly in the second intron of the person's TRPV1. Interestingly, the subject showed hypersensitivity to garlic extract, but TRPA1 (allicin receptor) level was normal. These results suggest that the decreased expression of TRPV1 may be related to a functional knock out in capsaicin sensation and hypersensitivity to allicin in humans.Entities:
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Year: 2006 PMID： 17110039 DOI： 10.1016/j.neulet.2006.10.046
Source DB: PubMed Journal: Neurosci Lett ISSN： 0304-3940 Impact factor: 3.046