Submucous Neurons
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Morphoquantitative study of the ileum enteric nervous system immunoreactives neurons to P2X2 receptor, calbindin, calretinin, choline acetyltransferase and nitric oxide sintase of the animals submitted to undernutrition and refeeding. / Estudo morfoquantitativo de neurônios entéricos imunorreativos ao receptor P2X2, a calbindina, a calretinina, a colina acetil transferase e ao óxido nítrico sintase do íleo de animais submetidos à desnutrição e a renutrição protéica.
Foi descrita a presença do receptor P2X2 no sistema nervoso entérico e foi constatado que a desnutrição afeta os neurônios mioentéricos. Este projeto analisou os neurônios dos plexos mioentérico (PM) e submucoso (PS) imunorreativos ao receptor P2X2(ir), calbindina (Calb-ir), calretinina (Calr-ir), colina acetil transferase (ChAT-ir) e ao óxido nítr
Publicado em: 2007
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2. Ultrastructural localisation of substance P, vasoactive intestinal peptide and somatostatin immunoreactivities in the submucous plexus of guinea pig ileum.
The submucous neurons, especially those related to the lymphatic vessels, together with their associated synapses, were studied ultrastructurally with respect to their immunoreactivities for 3 types of neuropeptides, namely substance P (SP), vasoactive intestinal peptide (VIP) and somatostatin (SOM). With the antibodies directed against the 3 types of neurop
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3. An ultrastructural study of the submucous plexus of guinea pig intestine after unilateral vagotomy.
This study describes the degenerative changes of the axon terminals making synaptic contacts with the neurons in the submucous ganglia of guinea pig small and large intestines following left or right cervical vagotomy. There were no noticeable ultrastructural changes 1 d after the operation. Beginning at the 3rd postoperative day for the small intestines and
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4. IL-1β and IL-6 excite neurons and suppress nicotinic and noradrenergic neurotransmission in guinea pig enteric nervous system
Conventional intracellular microelectrodes and injection of biocytin were used to study the actions of IL-1β and IL-6 on electrical and synaptic behavior in morphologically identified guinea pig small intestinal submucous neurons. Exposure to nanomolar concentrations of either IL-1β or IL-6 stimulated neuronal excitability. The excitatory action consisted
American Society for Clinical Investigation.
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5. Studies of the lymphatic vessel-associated neurons in the intestine of the guinea pig.
A unique group of neurons in the submucous plexus of the gastrointestinal tract in guinea pigs was studied using (1) Nissl staining and an enzyme histochemical technique for acetylcholinesterase (AChE), (2) immunohistochemical methods for the localisation of neuron specific enolase (NSE) and neuropeptides, including vasoactive intestinal peptide (VIP), subst
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6. Peptone stimulates CCK-releasing peptide secretion by activating intestinal submucosal cholinergic neurons.
In this study we tested the hypothesis that peptone in the intestine stimulates the secretion of the CCK-releasing peptide (CCK-RP) which mediates CCK secretion, and examined the enteric neural circuitry responsible for CCK-RP secretion. We used a "donor-recipient" rat intestinal perfusion model to quantify the CCK-RP secreted in response to nutrient stimula
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7. Mu and delta receptors belong to a family of receptors that are coupled to potassium channels.
The effects of agonists at mu and delta opioid receptors were compared by measuring membrane currents under voltage clamp from neurons of the rat nucleus locus coeruleus and guinea pig submucous plexus. In each tissue, the appropriate selective agonist (Tyr-D-Ala-Gly-MePhe-Gly-ol for mu receptors in locus coeruleus or Tyr-D-Pen-Gly-Phe-D-Pen for delta recept
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8. Toll-like Receptors 3, 4, and 7 Are Expressed in the Enteric Nervous System and Dorsal Root Ganglia
The aim of the present study was to evaluate the expression of innate immunity receptors belonging to the Toll-like family in the neural plexuses of the different tracts of murine intestine, of the human ileum, and in lower dorsal root ganglia (DRGs) from where extrinsic afferents to these plexuses originate. Results obtained by immunohistochemistry and immu
Histochemical Society.