Role and mechanisms of regulation of the basolateral Kir4.1/Kir5.1K+ channels in the distal tubules

O Palygin, O Pochynyuk, A Staruschenko - Acta Physiologica, 2017 - Wiley Online Library
Epithelial K+ channels are essential for maintaining electrolyte and fluid homeostasis in the
kidney. It is recognized that basolateral inward‐rectifying K+ (Kir) channels play an important …

Ion channel function and electrical excitability in the zona glomerulosa: a network perspective on aldosterone regulation

PQ Barrett, NA Guagliardo… - Annual review of …, 2021 - annualreviews.org
Aldosterone excess is a pathogenic factor in many hypertensive disorders. The discovery of
numerous somatic and germline mutations in ion channels in primary hyperaldosteronism …

Impaired renal HCO3-excretion in cystic fibrosis

P Berg, SL Svendsen, MV Sorensen… - Journal of the …, 2020 - journals.lww.com
Background Patients with cystic fibrosis (CF) do not respond with increased urinary HCO 3−
excretion after stimulation with secretin and often present with metabolic alkalosis. Methods …

[HTML][HTML] Potassium acts through mTOR to regulate its own secretion

MV Sørensen, B Saha, IS Jensen, P Wu, N Ayasse… - JCI insight, 2019 - ncbi.nlm.nih.gov
Potassium (K+) secretion by kidney tubule cells is central to electrolyte homeostasis in
mammals. In the K+-secreting principal cells of the distal nephron, electrogenic Na+ …

Potassium activates mTORC2-dependent SGK1 phosphorylation to stimulate epithelial sodium channel: role in rapid renal responses to dietary potassium

B Saha, W Shabbir, E Takagi, XP Duan… - Journal of the …, 2023 - journals.lww.com
Background Increasing evidence implicates the signaling kinase mTOR complex-2
(mTORC2) in rapid renal responses to changes in plasma potassium concentration [K+] …

Impaired renal HCO3 secretion in CFTR deficient mice causes metabolic alkalosis during chronic base‐loading

P Berg, SL Svendsen, TTL Hoang… - Acta …, 2021 - Wiley Online Library
Aim Cystic fibrosis patients have an increased risk of developing metabolic alkalosis
presumably as a result of altered renal HCO3− handling. In this study, we directly assess the …

Potassium activates mTORC2-dependent SGK1 phosphorylation to stimulate ENaC: role in rapid renal responses to dietary potassium

B Saha, W Shabbir, E Takagi, XP Duan… - Journal of the American …, 2023 - zora.uzh.ch
BACKGROUND: Increasing evidence implicates the signaling kinase mTOR complex-2
(mTORC2) in rapid renal responses to changes in plasma potassium concentration [K+] …

Na+ dependence of K+‐induced natriuresis, kaliuresis and Na+/Cl cotransporter dephosphorylation

IS Jensen, CK Larsen, J Leipziger… - Acta …, 2016 - Wiley Online Library
Aim High dietary K+ intake is associated with protection against hypertension. In mammals,
acute K+ intake induces natriuresis and kaliuresis, associated with a marked …

Loss of the secretin receptor impairs renal bicarbonate excretion and aggravates metabolic alkalosis in mice during acute base-loading

P Berg, T Jensen, JF Andersen… - Journal of the …, 2023 - journals.lww.com
Background The secretin receptor (SCTR) is functionally expressed in the basolateral
membrane of the β-intercalated cells of the kidney cortical collecting duct and stimulates …

Dietary K+ acts as a genuine diuretic

SL Svendsen, S Kornvig, P Berg, IS Jensen… - Acta …, 2022 - Wiley Online Library
K+ balance in mammals relies on regulated renal K+ excretion matching unregulated
fluctuating K+ intake. Upon a K+ rich meal, rapid and powerful K+ excretion is needed …