NA-COUPLED BICARBONATE TRANSPORTERS OF THE SOLUTE CARRIER 4 FAMILY IN THE NERVOUS SYSTEM FUNCTION, LOCALIZATION, AND RELEVANCE TO NEUROLOGIC FUNCTION

作者：Majumdar D; Bevensee M O^*

来源：Neuroscience, 2010, 171(4): 951-972.

DOI：10.1016/j.neuroscience.2010.09.037

• brain
• electrogenic astrocyte
• genetic
• neuron
• pH

Many cellular processes including neuronal activity are sensitive to changes in intracellular and/or extracellular pH both of which are regulated by acid-base transporter activity HCO(3)(-) dependent transporters are particularly potent regulators of intracellular pH in neurons and astrocytes, and also contribute to the composition of the cerebrospinal fluid (CSF) The molecular physiology of HCO(3)(-) transporters has advanced considerably over the past similar to 14 years as investigators have cloned and characterized the function and localization of many Na Coupled Bicarbonate Transporters of the solute carrier 4 (Slc4) family (NCBTs) In this review, we provide an updated overview of the function and localization of NCBTs in the nervous system Multiple NCBTs are expressed in neurons and astrocytes in various brain regions, as well as in epithelial cells of the choroid plexus Characteristics of human patients with SLC4 gene mutations/deletions and results from recent studies on mice with Slc4 gene disruptions highlight the functional importance of NCBTs in neuronal activity somatosensory function and CSF production Furthermore energy deficient states (e g hypoxia and ischemia) lead to altered expression and activity of NCBTs Thus, recent studies expand

• 出版日期2010-12-29