2022
DOI: 10.3390/fishes7050261
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Expression of Ion Transporters and Na+/K+-ATPase and H+-ATPase Activities in the Gills and Kidney of Silver Catfish (Rhamdia quelen) Exposed to Different pHs

Abstract: Exposure to acidic and alkaline pHs results in an ionic imbalance. Cellular responses involved in osmoregulation in silver catfish exposed to different pHs (5.5, 7.5, and 9.0) for 24 h were evaluated. The gills and kidney were collected to measure Na+/K+-ATPase (NKA) and H+-ATPase (V-ATPase) activities and to evaluate the expression of ion transporter-related genes: NKA (atp1a1), H+-ATPases (atp6v0a1b, atp6v0a2a, atp6v0a2b), Na+/H+ antiporter (slc9a3), K+/Cl− symporters (slc12a4, slc12a6, slc12a7a, slc12a7b), … Show more

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Cited by 6 publications
(3 citation statements)
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“…This protein is required not only for intracellular homeostasis but also for impelling force in fish gills for water and ion transport (Hwang et al, 1999). Fluctuation, like the high and low activity of the NKA pump, aids nutrition absorption in the small intestine (Marx et al, 2022). NKA maintains low intracellular Na + and high extracellular K + concentrations, whereas NKCC promotes Na + and Cl − entrance into the cellular compartment via the electrochemical gradient supplied by NKA (Rose & Verkhratsky, 2016).…”
Section: Morphology and Functional Activities Of Mrcsmentioning
confidence: 99%
“…This protein is required not only for intracellular homeostasis but also for impelling force in fish gills for water and ion transport (Hwang et al, 1999). Fluctuation, like the high and low activity of the NKA pump, aids nutrition absorption in the small intestine (Marx et al, 2022). NKA maintains low intracellular Na + and high extracellular K + concentrations, whereas NKCC promotes Na + and Cl − entrance into the cellular compartment via the electrochemical gradient supplied by NKA (Rose & Verkhratsky, 2016).…”
Section: Morphology and Functional Activities Of Mrcsmentioning
confidence: 99%
“…Environmental factors affect the adaptability of organisms to changes in environmental conditions [15][16][17][18]. Salinity is a fundamental environmental factor in mariculture, and it has a more significant influence in intensive culture patterns.…”
Section: Introductionmentioning
confidence: 99%
“…Exposure to salinity stress is associated with genetic response and the modulation of gene expression in hypersalinity tolerance. For instance, the function of Na+/K+ ATPase (NKA) has been studied in the gill and kidney of multiple species of fish including silver catfish (Marx et al, 2022), Nile tilapia (Oreochromis niloticus) (Mohamed et al, 2021), Japanese eel (Tang et al, 2012), Senegalese sole (Armesto et al, 2015), and pufferfish (Tetraodon nigroviridis) (Wang et al, 2017). Since NKA is in the gills, increased expression of NKA in gills after 14 days of exposure to 10 ppt saline is probably the result of the excretion of ions that flow into the body across the thin epithelia of the gills.…”
Section: Introductionmentioning
confidence: 99%