PMID- 24847209 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140624 LR - 20211021 IS - 1662-5102 (Print) IS - 1662-5102 (Electronic) IS - 1662-5102 (Linking) VI - 8 DP - 2014 TI - Cxs and Panx- hemichannels in peripheral and central chemosensing in mammals. PG - 123 LID - 10.3389/fncel.2014.00123 [doi] LID - 123 AB - Connexins (Cxs) and Pannexins (Panx) form hemichannels at the plasma membrane of animals. Despite their low open probability under physiological conditions, these hemichannels release signaling molecules (i.e., ATP, Glutamate, PGE2) to the extracellular space, thus subserving several important physiological processes. Oxygen and CO2 sensing are fundamental to the normal functioning of vertebrate organisms. Fluctuations in blood PO2, PCO2 and pH are sensed at the carotid bifurcations of adult mammals by glomus cells of the carotid bodies. Likewise, changes in pH and/or PCO2 of cerebrospinal fluid are sensed by central chemoreceptors, a group of specialized neurones distributed in the ventrolateral medulla (VLM), raphe nuclei, and some other brainstem areas. After many years of research, the molecular mechanisms involved in chemosensing process are not completely understood. This manuscript will review data regarding relationships between chemosensitive cells and the expression of channels formed by Cxs and Panx, with special emphasis on hemichannels. FAU - Reyes, Edison Pablo AU - Reyes EP AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile ; Direccion de Investigacion, Universidad Autonoma de Chile Santiago, Chile. FAU - Cerpa, Veronica AU - Cerpa V AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile. FAU - Corvalan, Liliana AU - Corvalan L AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile. FAU - Retamal, Mauricio Antonio AU - Retamal MA AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile. LA - eng PT - Journal Article PT - Review DEP - 20140509 PL - Switzerland TA - Front Cell Neurosci JT - Frontiers in cellular neuroscience JID - 101477935 PMC - PMC4023181 OTO - NOTNLM OT - astrocytes OT - carotid body OT - connexins OT - gap junctions OT - glomus cells OT - hypercapnia OT - hypoxia EDAT- 2014/05/23 06:00 MHDA- 2014/05/23 06:01 PMCR- 2014/01/01 CRDT- 2014/05/22 06:00 PHST- 2014/02/26 00:00 [received] PHST- 2014/04/18 00:00 [accepted] PHST- 2014/05/22 06:00 [entrez] PHST- 2014/05/23 06:00 [pubmed] PHST- 2014/05/23 06:01 [medline] PHST- 2014/01/01 00:00 [pmc-release] AID - 10.3389/fncel.2014.00123 [doi] PST - epublish SO - Front Cell Neurosci. 2014 May 9;8:123. doi: 10.3389/fncel.2014.00123. eCollection 2014.