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ganglion cysts/tyrosine

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Incubation of the rat superior cervical ganglion in Na+-free or low-Na+ medium increased the rate of synthesis of 3,4-dihydroxyphenylalanine (DOPA) in the ganglion fourfold and caused a concomitant stable activation of tyrosine hydroxylase. DOPA synthesis was half-maximal in medium containing about
Dexamethasone is known to elicit an increase of tyrosine hydroxylase activity in the superior cervical ganglion. The details of such a glucocorticoid effect were investigated in the present study. Of 4 glucocorticoids (dexamethasone, corticosterone, hydrocortisone and triamcinolone) examined in
Electrical stimulation of the preganglionic cervical sympathetic trunk increases the phosphorylation of tyrosine hydroxylase in the superior cervical ganglion of the rat by a nicotinic mechanism and by a noncholinergic mechanism. We have measured the incorporation of [32P]Pi into specific tryptic

Phorbol 12,13-dibutyrate increases tyrosine hydroxylase activity in the superior cervical ganglion of the rat.

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Phorbol 12,13-dibutyrate (PDBu) increased the production of 3,4-dihydroxyphenylalanine (DOPA) in the superior cervical ganglion of the rat. This effect occurred without a detectable lag and persisted for at least 90 min of incubation. The action of PDBu was half-maximal at a concentration of
Retinal ganglion cell (RGC) degeneration is irreversible in glaucoma and tyrosine kinase receptor B (TrkB)-associated signaling pathways have been implicated in the process. In this study, we attempted to examine whether imipramine, a tricyclic antidepressant, may protect hydrogen peroxide
We have previously shown that stimulation of the preganglionic cervical sympathetic trunk leads to an acute increase in tyrosine hydroxylase (TyrOHase) activity in the rat superior cervical ganglion. This increase appears to be mediated in part by acetylcholine and in part by a second

Phosphorylation of tyrosine hydroxylase in the superior cervical ganglion.

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We studied the phosphorylation of tyrosine hydroxylase in the superior cervical ganglion of the rat. Ganglia were preincubated with [32P]Pi and were then incubated in non-radioactive medium containing a variety of agents that are known to activate tyrosine hydroxylase in this tissue. Tyrosine
Muscarinic agonists cause a stable activation of tyrosine 3-monooxygenase in the superior cervical ganglion and increase the incorporation of 32Pi into phospholipids in the ganglion. We have studied the relationship between muscarine-stimulated phospholipid turnover and the muscarine-induced

Activation of tyrosine hydroxylase in the superior cervical ganglion by nicotinic and muscarinic agonists.

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Both dimethylphenylpiperazinium (DMPP), a nicotinic agonist, and bethanechol, a muscarinic agonist, increase 3,4-dihydroxyphenylalanine (DOPA) synthesis in the superior cervical ganglion of the rat. DMPP causes approximately a fivefold increase in DOPA accumulation in intact ganglia whereas
BACKGROUND To achieve a better understanding of the repertoire of receptor tyrosine kinases (RTKs) in adult retinal ganglion cells (RGCs) we performed polymerase chain reaction (PCR), using degenerate primers directed towards conserved sequences in the tyrosine kinase domain, on cDNA from isolated
The coexistence of histamine, histidine decarboxylase (the enzyme synthesizing histamine), 5-hydroxytryptamine and tyrosine hydroxylase (the rate-limiting enzyme in catecholamine synthesis), was studied in the rat superior cervical ganglion with the indirect immunofluorescence method. Possible
The effects of increased synaptic stimulation of sympathetic neurons on the tyrosine hydroxylase activity of these cells were studied. Seventy-two hours after unilateral stimulation of the preganglionic cervical sympathetic trunk at 10 Hz for 30 min tyrosine hydroxylase activity was 32% higher in

Localization of tyrosine-phosphorylated proteins in cultured mouse dorsal root ganglion neurons.

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The present study, using confocal laser scanning microscopy and immunoelectron microscopy, examined the intracellular localization of tyrosine-phosphorylated proteins in cultured mouse dorsal root ganglion neurons with special reference to their growth cones. The growth cone is the specialized
We have examined whether the noradrenergic neurons have direct synaptic projections to the myenteric ganglion neurons of the duodenum and the ultrastructure of their terminals by using immunogold-silver labeling for tyrosine hydroxylase. In the neuropil of the myenteric ganglia, about half of the
Previous work showed that axotomy-induced deafferentation of the placode-derived visceral afferent neurons of the nodose ganglion altered their expression of some neuropeptides and tyrosine hydroxylase. The present studies were designed to selectively evaluate the loss of axonal transport on the
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