PMID- 15893591 OWN - NLM STAT- MEDLINE DCOM- 20050802 LR - 20181201 IS - 0169-328X (Print) IS - 0169-328X (Linking) VI - 136 IP - 1-2 DP - 2005 May 20 TI - TRPM8 protein localization in trigeminal ganglion and taste papillae. PG - 91-8 AB - TRPM8 is a TRP family cation channel which can be activated by cold stimuli or l-menthol. However, TRPM8 protein localization of nerve terminals in sensory organs remains unknown. Here we generated an antibody against TRPM8 and analyzed TRPM8 protein localization in trigeminal ganglia (TG) and in sensory nerve fibers in the tongue. TRPM8 immunoreactivity was detected in a subset of neurons with a small diameter in TG and in nerve fibers in the tongue. TRPM8-immunoreactive nerve fibers were rich in fungiform papillae, but sparse in foliate and circumvallate papillae. The TRPM8-immunoreactive nerve fibers reached the outer epithelial layer in each papilla, while no TRPM8-immunoreactive nerve fibers penetrated into taste buds. Double labeling analysis revealed that TRPM8 immunoreactivity was co-expressed with a part of TRPV1 or CGRP-immunoreactive neurons in TG. However, TRPM8 immunoreactivity was not observed in TRPV1- or CGRP-positive nerve fibers in fungiform, foliate, and circumvallate papillae. These results suggest that TRPM8 protein is present in sensory lingual nerve fibers mainly projected from TG and might work as cold and l-menthol receptors on tongue. FAU - Abe, Junji AU - Abe J AD - Division of Biological Information, Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan. FAU - Hosokawa, Hiroshi AU - Hosokawa H FAU - Okazawa, Makoto AU - Okazawa M FAU - Kandachi, Mikako AU - Kandachi M FAU - Sawada, Yosuke AU - Sawada Y FAU - Yamanaka, Keiji AU - Yamanaka K FAU - Matsumura, Kiyoshi AU - Matsumura K FAU - Kobayashi, Shigeo AU - Kobayashi S LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050302 PL - Netherlands TA - Brain Res Mol Brain Res JT - Brain research. Molecular brain research JID - 8908640 RN - 0 (Ion Channels) RN - 0 (Neoplasm Proteins) RN - 0 (Neurofilament Proteins) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (TRPM Cation Channels) RN - 0 (TRPM8 protein, human) RN - 0 (TRPV Cation Channels) RN - 0 (Trpm8 protein, rat) RN - 0 (Trpv1 protein, rat) RN - 108688-71-7 (neurofilament protein H) RN - EC 3.4.19.12 (UCHL1 protein, rat) RN - EC 3.4.19.12 (Ubiquitin Thiolesterase) RN - JHB2QIZ69Z (Calcitonin Gene-Related Peptide) SB - IM MH - Animals MH - Animals, Newborn MH - Blotting, Western/methods MH - Calcitonin Gene-Related Peptide/metabolism MH - Cell Line MH - Gene Expression Regulation/*physiology MH - Humans MH - Immunohistochemistry/methods MH - Ion Channels/*metabolism MH - Male MH - Neoplasm Proteins/*metabolism MH - Neurofilament Proteins/metabolism MH - Neurons/metabolism MH - Proto-Oncogene Proteins c-myc/metabolism MH - Rats MH - Rats, Wistar MH - TRPM Cation Channels MH - TRPV Cation Channels MH - Taste Buds/*metabolism MH - Tongue/*cytology/metabolism MH - Transfection/methods MH - Trigeminal Ganglion/cytology/*metabolism MH - Ubiquitin Thiolesterase/metabolism EDAT- 2005/05/17 09:00 MHDA- 2005/08/03 09:00 CRDT- 2005/05/17 09:00 PHST- 2004/08/24 00:00 [received] PHST- 2004/12/30 00:00 [revised] PHST- 2005/01/09 00:00 [accepted] PHST- 2005/05/17 09:00 [pubmed] PHST- 2005/08/03 09:00 [medline] PHST- 2005/05/17 09:00 [entrez] AID - S0169-328X(05)00034-3 [pii] AID - 10.1016/j.molbrainres.2005.01.013 [doi] PST - ppublish SO - Brain Res Mol Brain Res. 2005 May 20;136(1-2):91-8. doi: 10.1016/j.molbrainres.2005.01.013. Epub 2005 Mar 2.