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The effect of omega-conotoxin GVIA (omega-CgTx) was studied on spontaneous, K(+)-induced and electrically evoked neurotransmitter release at the neuromuscular junction of mouse diaphragm. omega-CgTx decreased the frequency and amplitude of basal and K(+)-induced miniature end plate potentials. This effect was abolished by raising the extracellular Ca2+(More)
We investigated the role of the immune system in the pathogenesis of amyotrophic lateral sclerosis (ALS) by studying the long-term consequences of ALS immunoglobulin (Ig) application on the levator auris muscle of the mouse. We applied Ig from seven ALS patients, four disease controls, and a pool of normal Ig (6 mg of Ig in 2 weeks) by subcutaneous(More)
The effect of the phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA) on the release process was studied in presence of different extracellular Ca2+ concentrations, in the mouse phrenic-diaphragm preparation. Hemidiaphragms were incubated for 2 h at room temperature in the presence or absence of TPA. TPA increased the basal frequency of miniature end(More)
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