Vasomotor sympathetic neurons are more excitable than secretomotor sympathetic neurons in bullfrog paravertebral ganglia
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چکیده
منابع مشابه
Continuous repetitive stimuli are more effective than bursts for evoking LHRH release in bullfrog sympathetic ganglia.
Effects of different patterns of presynaptic stimulation upon release of leuteinizing hormone releasing hormone (LHRH) were studied by monitoring LHRH-induced slow currents from individual postsynaptic neurons in bullfrog sympathetic ganglia. LHRH-mediated synaptic currents in ganglionic B and C neurons were recorded by a single-electrode voltage-clamp technique. Using continuous stimulation, r...
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Currents carried by Ba2+ through calcium channels were recorded in the whole-cell configuration in isolated frog sympathetic neurons. The effect of surface charge on the apparent saturation of the channel with Ba2+ was examined by varying [Ba2+]o and ionic strength. The current increased with [Ba2+]o, and the I-V relation and the activation curve shifted to more positive voltages. The shift of ...
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I have explored the chick sympathetic system as a model for the study of specific synapse formation by examining the pattern of ganglion cell innervation by preganglionic axons in 2 different ganglia. Using intracellular recording and HRP labeling techniques, the innervation of the 12th and 15th cervical ganglia (C12 and C15) was examined. Sympathetic ganglion cells of the chick are innervated ...
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Calcium currents in bullfrog sympathetic neurons inactivate slowly and partially during depolarizations lasting 0.5-1 s. There is also a slower (minutes) inactivation process with a broad voltage dependence. An irreversible loss of current (rundown) is prominent with low concentrations of intracellular Ca2+ buffers, with either Ca2+ or Ba2+ as the charge carrier. The extent and rate of the more...
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ژورنال
عنوان ژورنال: Autonomic Neuroscience
سال: 2010
ISSN: 1566-0702
DOI: 10.1016/j.autneu.2009.12.009