Potato (Solanum tuberosum) is a major crop world-wide and the productivity of currently used cultivars is strongly reduced at high soil salt levels. We compared the response of six potato cultivars to increased root NaCl concentrations. Cuttings were grown hydroponically and treated with 0 mM, 60 mM and 180 mM NaCl for one week. Growth reduction on salt was strongest for the cultivars Mozart an...

PURPOSE To examine the effect of hypertonicity on the induction of the Na(+)-myo-inositol (Na(+)-MI) cotransporter(s) in cultured bovine lens epithelial cells (BLECs). METHODS Na(+)-MI cotransporter 626-bp reverse transcription-polymerase chain reaction product amplified from lens cell RNA and aldose reductase (AR) cDNA probes were used to measure respective mRNA content by Northern blot anal...

OBJECTIVE Na+ can be stored in muscle and skin without commensurate water accumulation. The aim of this study was to assess Na+ and H2O in muscle and skin with MRI in acute heart failure patients before and after diuretic treatment and in a healthy cohort. METHODS Nine patients (mean age 78 years; range 58-87) and nine age and gender-matched controls were studied. They underwent 23Na/1H-MRI a...

Two mechanisms of Na+ influx have been observed using synaptosomal plasma membrane vesicles purified by density gradient centrifugation from a synaptosomal hypotonic lysate. First, a 5-fold increase in uptake over basal Na+ entry occurs with 50 microM veratridine. The veratridine-dependent Na+ uptake is partially inhibited by 2 microM tetrodotoxin with an apparent time dependency of action (hal...

abstract nowadays, environmental pollution by heavy metals is one of the most serious threats of the world which needs effective remediation actions. the aim of this study was to investigate the potential use of atriplex [atriplex verucifera], salicornia [salicornia europaea] and chenopodium album in simultaneous uptake and accumulation of na and cd or pb in two calcareous soils with different ...

To measure the influx of Na' and other ions through the lightdependent permeability of photoreceptors, we superfused the isolated retina of the toad, Bufo marinus, with a low-Ca2+ (10-8 M), low-ClRinger's solution containing 0.5 mM ouabain . Under these conditions, the membrane potential of the rod is near zero and there is no light-induced potential change either in the rod or in more proximal...

One function of the vertebrate choroid plexus (CP) is removal of potentially toxic metabolites and xenobiotics from cerebrospinal fluid (CSF) to blood for subsequent excretion in urine and bile. We have used confocal microscopy and quantitative image analysis to follow transport of the large organic anion fluorescein-methotrexate (FL-MTX) from bath (CSF side) to blood vessels in intact rat CP a...

Continuous oral administration of sodium cyclamate(CHS-Na) to guinea pig caused the gradual increase of urinary excretion of cyclohexylamine(CHA) after a certain period. The amount of CHA excreted was not only different in individuals, but also dependent on each experiment. It was diminished when CHS-Na was administered orally with antibiotics or intraperitoneally. It was shown from the incubat...