W O Fu

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Bioelectrical properties and anion secretion in cultured epithelia from different regions of rat and human male excurrent ducts were studied by measuring the short-circuit currents (ISC). In all regions of the rat excurrent duct, Cl- secretion accounts for over 90% of the basal ISC, although the magnitude varied in different regions. Cl- secretion was found(More)
Ionic fluxes are thought to be important in the initiating process of gamete interaction such as acrosome reaction. Different populations of ion channels in rat and human spermatozoa were investigated using the planar lipid bilayer technique. Membrane proteins were isolated from rat and human sperm and inserted into lipid bilayer via fusion. We observed(More)
Swelling-induced Cl- conductance in cultured rat epididymal cells was characterized using whole cell patch-clamp techniques. Activation of whole cell current with an outwardly rectifying current-potential relationship was observed in cells exposed to hyposmotic solutions. This current was determined, from the observed current-reversal potentials at(More)
An outwardly rectifying conductance was observed in primary cultured human epididymal cells under the patch-clamp whole-cell configuration in KCl pipette and bath solutions. Removal of Cl- from intracellular and extracellular solutions did not affect this conductance, but substitution of K+ with N-methyl-D-glucamine in both solutions completely blocked the(More)
1. Activation of both anion and cation conductances was observed in primary cultured human epididymal cells during osmotic swelling under the patch-clamp whole-cell configuration. The swelling-induced anion conductance was 25.66 +/- 4.70 nS and the cation conductance was 7.35 +/- 1.40 nS. The permeability ratio of K+ to Cl- (PK/PCl) was calculated to be(More)
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