The sodium/potassium pump helps restore the electrical charge in human neutrophils after they become depolarized, but it plays almost no role in keeping the normal charge stable over time.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
A systematic review could quantify the relative contribution of the Na+/K+ pump to repolarization versus resting potential maintenance across all human neutrophil studies.
A systematic review and meta-analysis of all studies (1970–2024) using ouabain to inhibit the Na+/K+ pump and measuring both repolarization kinetics after depolarization and resting potential stability, with standardized outcome definitions.
An RCT could determine whether inhibiting the Na+/K+ pump impairs repolarization more than it alters resting potential in human neutrophils.
A double-blind, crossover RCT in 25 healthy adults, where neutrophils are exposed to ouabain (1 mM) or vehicle in randomized order, with membrane potential measured during depolarization (calcium-free) and subsequent repolarization (calcium-repleted), and at resting state.
A cohort study could determine whether individuals with Na+/K+ pump mutations show impaired repolarization but normal resting potential in neutrophils.
A prospective cohort of 120 individuals with familial pseudohypoaldosteronism type II (caused by Na+/K+ pump mutations) and 120 matched controls, measuring neutrophil repolarization kinetics and resting potential under standardized conditions.
A case-control study could determine whether neutrophils from patients with chronic inflammation show altered Na+/K+ pump dependence for repolarization.
A matched case-control study comparing Na+/K+ pump contribution to repolarization in 70 patients with active rheumatoid arthritis and 70 healthy controls, using ouabain sensitivity and membrane potential tracking.
A cross-sectional study could describe the variability in Na+/K+ pump contribution to repolarization and resting potential in a healthy population.
A cross-sectional analysis of 400 healthy adults measuring the change in membrane potential after ouabain exposure during repolarization and at rest, stratifying by age, sex, and baseline potassium levels.