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ganglion cysts/nikotin

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The median neuroendocrine cells of the subesophageal ganglion, important components of the neuroendocrine system of the tobacco hawkmoth, Manduca sexta, have not been well investigated. Therefore, we studied the anatomy of these cells by axonal backfills and characterized their peptide

Pharmacology of nicotine-induced increase in cytosolic Ca2+ concentrations in chick embryo ciliary ganglion cells.

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Chick embryo ciliary ganglion cells were acutely isolated, and the mechanism(s) underlying the increase in the cytosolic Ca2+ concentration ([Ca]in) induced by high concentrations of nicotine examined using fura-2 microfluorometry. The order of potencies of nicotinic receptor agonists in increasing

Capsaicin and nicotine both activate a subset of rat trigeminal ganglion neurons.

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Nicotine and capsaicin produce many similar physiological responses that include pain, irritation, and vasodilation. To determine whether neuronal nicotine acetylcholine receptors (nAChR) are present on capsaicin-sensitive neurons, whole cell patch-clamp recordings were performed on rat trigeminal

Sphenopalatine ganglion blocks for the treatment of nicotine addiction.

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The purpose of this study was to investigate the effects of sphenopalatine ganglion block upon the physical symptoms of nicotine withdrawal in a double-blind placebo-controlled study. Seventeen patients completed a course of treatment which involved daily intranasal application of local anesthetic

Rabbit retinal ganglion cell responses to nicotine can be mediated by beta2-containing nicotinic acetylcholine receptors.

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Acetylcholine (ACh) affects the response properties of many retinal ganglion cells (GCs) through the activation of nicotinic acetylcholine receptors (nAChRs). To date there have been few studies directly correlating the expression of specific nAChR subtypes with the physiological and morphological

Effects of ganglion blocking agents on nicotine extensor convulsions and lethality in mice.

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1. The ganglion blocking agents, chlorisondamine, pentamethonium, mecamylamine, decamethonium and hexamethonium all block nicotine extensor convulsions when administered intraventricularly in mice. Tetraethylammonium was inactive.2. For the intraventricular route, there is a relationship between

Nicotine cue in rats: effects of central administration of ganglion-blocking drugs.

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In rats trained to discriminate nicotine from saline, a single intraventricular injection of a small dose of the quaternary ganglion-blocking drug chlorisondamine blocked the response to nicotine for four weeks. pentolinium was only weakly active and hexamethonium was inactive as a nicotine

Effects of nicotine and hexamethonium on discharges in the stellate ganglion.

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The effects of nicotine and hexamethonium on postganglionic discharges elicited by tetanic preganglionic stimulation or muscarinic agonists were observed on the isolated hamster stellate ganglion. The amplitude and duration of the afterdischarges from tetanic preganglionic stimulation in
The frontal ganglion of the adult forms of the tobacco hornworm, Manduca sexta, was investigated immunocytochemically for the occurrence of the gastro-entero-pancreatic (GEP) neurohormonal peptides, namely insulin, nerve growth factor, epidermal growth factor, insulin C-peptide, somatostatin,

Differential expression of immediate early genes in the superior cervical ganglion after nicotine treatment.

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We examined the effects of single and multiple systemic injections of nicotine on the expression of five immediate early genes in the rat superior cervical ganglion by in situ hybridization histochemistry. A single nicotine injection resulted in a rapid and transient activation phase of nerve growth
1. The relative potency in blocking the nicotine-induced relaxation of the bovine retractor penis muscle (BRP) was estimated for 12 drugs known to have ganglion-blocking properties. 2. The order of potency of the drugs studied was mecamylamine greater than chlorisondamine greater than pentolinium

Prenatal nicotine affects catecholamine gene expression in newborn rat carotid body and petrosal ganglion.

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Nicotine exposure modifies the expression of catecholamine and opioid neurotransmitter systems involved in attenuation of hypoxic chemosensitivity. We used in situ hybridization histochemistry to determine the effect of prenatal and early postnatal nicotine exposure on tyrosine hydroxylase (TH),

Nicotine is neuroprotective to neonatal neurons of sympathetic ganglion in rat.

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Sympathetic neurons of SCG are dependent on availability of nerve growth factor (NGF) for their survival. SCG neurons express nicotinic receptors (nAChR) whose expression levels are modulated by nicotine. Nicotine exerts multiple effects on neurons, including neuroprotection, through nAChR binding.

Dual action of nicotine on the sympathetic ganglion of the cat.

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