PMID- 28614118 OWN - NLM STAT- MEDLINE DCOM- 20180417 LR - 20221104 IS - 1473-6543 (Electronic) IS - 1062-4821 (Print) IS - 1062-4821 (Linking) VI - 26 IP - 5 DP - 2017 Sep TI - The renal response to potassium stress: integrating past with present. PG - 411-418 LID - 10.1097/MNH.0000000000000352 [doi] AB - PURPOSE OF REVIEW: The current review combines past findings with recent advances in our understanding of the homeostatic response to potassium imbalance. RECENT FINDINGS: Following the ingestion of a dietary potassium load, a combination of extrarenal and renal mechanisms act to maintain extracellular K+ within a tight window. Through hormonal regulation and direct K+ sensing, the nephron is ideally suited to respond to wide shifts in external K+ balance. Current evidence indicates that dietary K+ loading triggers a coordinated kaliuretic response that appears to involve voltage-dependent changes in sodium transport across multiple nephron segments, including the proximal tubule, medullary loop of Henle, and distal tubule. Inhibition of sodium transport in these segments would accomplish the final goal of enhancing distal NaCl delivery, luminal flow, and K+ secretion in the aldosterone sensitive distal nephron (ASDN). SUMMARY: Ongoing research seeks to define the relationship between potassium and volume homeostasis by elucidating pathways that couple renal K+ sensing and tubular function during the potassium stress response. FAU - Boyd-Shiwarski, Cary R AU - Boyd-Shiwarski CR AD - aDepartment of Medicine, Renal-Electrolyte Division bDepartment of Cell Biology, University of Pittsburgh School of Medicine cVA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA. FAU - Subramanya, Arohan R AU - Subramanya AR LA - eng GR - P30 DK079307/DK/NIDDK NIH HHS/United States GR - R01 DK098145/DK/NIDDK NIH HHS/United States GR - T32 DK061296/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Review PL - England TA - Curr Opin Nephrol Hypertens JT - Current opinion in nephrology and hypertension JID - 9303753 RN - 0 (Potassium, Dietary) RN - 9NEZ333N27 (Sodium) RN - RWP5GA015D (Potassium) SB - IM MH - Animals MH - Homeostasis MH - Humans MH - Ion Transport MH - Nephrons/*metabolism MH - Potassium/*metabolism MH - Potassium, Dietary/*administration & dosage MH - Sodium/metabolism MH - Stress, Physiological PMC - PMC9624486 MID - NIHMS929770 COIS- Conflicts of interest There are no conflicts of interest. EDAT- 2017/06/15 06:00 MHDA- 2018/04/18 06:00 PMCR- 2022/11/01 CRDT- 2017/06/15 06:00 PHST- 2017/06/15 06:00 [pubmed] PHST- 2018/04/18 06:00 [medline] PHST- 2017/06/15 06:00 [entrez] PHST- 2022/11/01 00:00 [pmc-release] AID - 10.1097/MNH.0000000000000352 [doi] PST - ppublish SO - Curr Opin Nephrol Hypertens. 2017 Sep;26(5):411-418. doi: 10.1097/MNH.0000000000000352.