Related Experiment Video

Updated: Jul 11, 2026

Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays
12:48

Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays

Published on: February 19, 2013

Vanadate: non-selective inhibition of transepithelial transport of Na+, H+ and water

D D Fanestil

    Experientia
    |September 15, 1980
    PubMed

    Keywords:
    Vanadate effects on epithelial transportNon-selective ion transport inhibitionUrinary bladder transport mechanismsToad epithelial transport studies

    More Related Videos

    Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane07:38

    Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane

    Published on: March 30, 2015

    Application of Electrophysiology Measurement to Study the Activity of Electro-Neutral Transporters11:51

    Application of Electrophysiology Measurement to Study the Activity of Electro-Neutral Transporters

    Published on: February 3, 2018

    Related Concept Videos

    ATP Driven Pumps III: V-type Pumps01:30

    ATP Driven Pumps III: V-type Pumps

    V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
    The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
    Drug Elimination by Renal Route: Tubular Reabsorption01:22

    Drug Elimination by Renal Route: Tubular Reabsorption

    During the process of renal excretion, as the glomerular filtrate progresses to the distal convoluted tubule (DCT), drugs that are highly permeable, lipophilic, and nonionized undergo passive reabsorption from the tubular fluid into the surrounding peritubular capillaries. This reabsorption process restricts their elimination through the kidneys. However, the majority of drugs are either weak acids or weak bases, and their ionization level is dependent on pH. By altering the pH of urine, the...
    Drug Elimination by Renal Route: Tubular Secretion01:15

    Drug Elimination by Renal Route: Tubular Secretion

    Once the process of glomerular filtration is completed, blood carrying unfiltered drug molecules traverses through efferent arterioles and makes its way into the peritubular capillaries in the proximal tubule. A variety of carriers play a pivotal role in actively secreting drugs from these peritubular capillaries into the tubular fluid. The organic anion transporter transfers acidic drugs, against an electrochemical gradient, from the peritubular capillaries into the renal tubule cells and...
    Reabsorption and Secretion in the Loop of Henle01:17

    Reabsorption and Secretion in the Loop of Henle

    The thick ascending limb of the nephron loop has Na+–K+–2Cl− symporters in the apical membranes of its cells. These symporters simultaneously reclaim one sodium ion, one potassium ion, and two chloride ions from the tubular fluid. Sodium ions are actively transported into the interstitial fluid at the base and sides of the cell, diffusing into the vasa recta. Chloride ions move through leakage channels in the basolateral membrane into the interstitial fluid and then into the vasa recta.
    Pore Transport and Ion-Pair Transport01:17

    Pore Transport and Ion-Pair Transport

    Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
    Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...
    Active Transport01:14

    Active Transport

    Active transport is a critical biological process that allows cells to move solutes against an electrochemical gradient. This process requires direct energy input and is characterized by its selectivity, saturability, and susceptibility to competitive inhibition.
    Primary active transporters, like Na+, K+ and -ATPase, directly utilize ATP to move ions across the membrane. These transporters play significant roles in various physiological processes. For instance, Na+, K+ and -ATPase maintain...