Movement of NH3 through the human urea transporter B: a new gas channel

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Movement of NH₃ through the human urea transporter B: a new gas channel.

Aquaporins and Rh proteins can function as gas (CO₂ and NH₃) channels. The present study explores the urea, H₂O, CO₂, and NH₃ permeability of the human urea transporter B (UT-B) (SLC14A1), expressed in Xenopus oocytes. We monitored urea uptake using [¹⁴C]urea and measured osmotic water permeability (Pf) using video microscopy. To obtain a semiquantitative measure of gas permeability, we used mi...

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Expression and localization of a UT-B urea transporter in the human bladder.

Facilitative UT-B urea transporters have been shown to play an important role in the urinary concentrating mechanism. Recent studies have now suggested a link between UT-B allelic variation and human bladder cancer risk. UT-B1 protein has been previously identified in the bladder of various mammalian species, but not yet in humans. The aim of the present study was to investigate whether any UT-...

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ژورنال

عنوان ژورنال: American Journal of Physiology-Renal Physiology

سال: 2013

ISSN: 1931-857X,1522-1466

DOI: 10.1152/ajprenal.00609.2012