Differential Localization of Acid-Sensing Ion Channels 1 and 2 in Human Cutaneus Pacinian Corpuscles

被引:36
作者
Calavia, M. G. [1 ]
Montano, J. A. [2 ]
Garcia-Suarez, O. [1 ]
Feito, J. [1 ]
Guervos, M. A. [3 ]
Germana, A. [4 ,5 ]
del Valle, M. [1 ]
Perez-Pinera, P. [1 ]
Cobo, J. [6 ,7 ]
Vega, J. A. [1 ,8 ]
机构
[1] Univ Oviedo, Dept Morfol & Biol Celular, Fac Med, E-33006 Oviedo, Spain
[2] Univ Catolica San Antonio, Dept Ciencias Salud, Murcia, Spain
[3] Univ Oviedo, Serv Cient Tecn, Serv Proceso Imagenes, E-33006 Oviedo, Spain
[4] Univ Messina, Fac Med Vet, Dipartimento MOBIFIPA, Sez Morfol, Messina, Italy
[5] Univ Messina, Fac Med Vet, CISS, Messina, Italy
[6] Univ Oviedo, Dept Cirugia & Especialidades Med Quirurg, E-33006 Oviedo, Spain
[7] Inst Asturiano Odontol, Oviedo, Spain
[8] Univ Oviedo, IUOPA, E-33006 Oviedo, Spain
关键词
ASIC proteins; Pacinian corpuscles; Immunohistochemistry; Human; Mechanoreceptors; GAMMA-SUBUNIT; BETA-SUBUNIT; EXPRESSION; ASIC2; ENAC; CONTRIBUTES; MECHANISMS; PROTEINS; MEISSNER; ENDINGS;
D O I
10.1007/s10571-010-9511-2
中图分类号
Q2 [细胞生物学];
学科分类号
071013 [干细胞生物学];
摘要
Acid-sensing ion channels (ASICs) are the members of the degenerin/epithelial sodium channel (Deg/ENaC) superfamily which mediate different sensory modalities including mechanosensation. ASICs have been detected in mechanosensory neurons as well as in peripheral mechanoreceptors. We now investigated the distribution of ASIC1, ASIC2, and ASIC3 proteins in human cutaneous Pacinian corpuscles using immunohistochemistry and laser confocal-scanner microscopy. We detected different patterns of expression of these proteins within Pacinian corpuscles. ASIC1 was detected in the central axon co-expressed with RT-97 protein, ASIC2 was expressed by the lamellar cells of the inner core co-localized with S100 protein, and ASIC3 was absent. These results demonstrate for the first time the differential distribution of ASIC1 and ASIC2 in human rapidly adapting low-threshold mechanoreceptors, and suggest specific roles of both proteins in mechanotransduction.
引用
收藏
页码:841 / 848
页数:8
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