KCNMA1-linked channelopathy

CS Bailey, HJ Moldenhauer, SM Park… - Journal of General …, 2019 - rupress.org
KCNMA1 encodes the pore-forming α subunit of the “Big K+”(BK) large conductance calcium
and voltage-activated K+ channel. BK channels are widely distributed across tissues …

Aldosterone, SGK1, and ion channels in the kidney

WC Valinsky, RM Touyz, A Shrier - Clinical science, 2018 - portlandpress.com
Hyperaldosteronism, a common cause of hypertension, is strongly connected to Na+, K+,
and Mg2+ dysregulation. Owing to its steroidal structure, aldosterone is an active …

[HTML][HTML] Current management of hyperkalemia in patients on dialysis

S Bansal, PE Pergola - Kidney international reports, 2020 - Elsevier
Patients with end-stage renal disease (ESRD) on maintenance dialysis have a high risk of
developing hyperkalemia, generally defined as serum potassium (K+) concentrations of> 5.0 …

Hypertension of Kcnmb1−/− is linked to deficient K secretion and aldosteronism

PR Grimm, DL Irsik, DC Settles… - Proceedings of the …, 2009 - National Acad Sciences
Mice lacking the β1-subunit (gene, Kcnmb1; protein, BK-β1) of the large Ca-activated K
channel (BK) are hypertensive. This phenotype is thought to result from diminished BK …

[HTML][HTML] The BK potassium channel in the vascular smooth muscle and kidney: α-and β-subunits

RS Wu, SO Marx - Kidney international, 2010 - Elsevier
The large-conductance voltage and calcium-sensitive BK channel is important in many
electrically active cells. Its unique sensitivity to both intracellular calcium levels and …

Colonic potassium handling

MV Sorensen, JE Matos, HA Praetorius… - Pflügers Archiv-European …, 2010 - Springer
Homeostatic control of plasma K+ is a necessary physiological function. The daily dietary K+
intake of~ 100 mmol is excreted predominantly by the distal tubules of the kidney. About …

Large conductance, calcium-and voltage-gated potassium (BK) channels: regulation by cholesterol

AM Dopico, AN Bukiya, AK Singh - Pharmacology & therapeutics, 2012 - Elsevier
Cholesterol (CLR) is an essential component of eukaryotic plasma membranes. CLR
regulates the membrane physical state, microdomain formation and the activity of membrane …

Role of BK channels in hypertension and potassium secretion

JD Holtzclaw, PR Grimm… - Current opinion in …, 2011 - journals.lww.com
Classical physiological analysis of electrolyte handling in knockout mice has enlightened
our understanding of the mechanism of handling K loads by renal K channels. Studies have …

Hyperkalemia in patients undergoing hemodialysis: Its pathophysiology and management

S Shibata, S Uchida - Therapeutic Apheresis and Dialysis, 2022 - Wiley Online Library
Potassium is a major intracellular cation in the body, regulating membrane potential of
excitable cells, such as cardiomyocytes and skeletal muscle cells. Because the kidney plays …

[HTML][HTML] Colonic potassium absorption and secretion in health and disease

VM Rajendran, GI Sandle - Comprehensive Physiology, 2018 - ncbi.nlm.nih.gov
The colon has large capacities for K+ absorption and K+ secretion, but its role in maintaining
K+ homeostasis is often overlooked. For many years, passive diffusion and/or solvent drag …