Search Results - "Wattchow, David A"
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Mechanisms Controlling Glucose-Induced GLP-1 Secretion in Human Small Intestine
Published in Diabetes (New York, N.Y.) (01-08-2017)“…Intestinal glucose stimulates secretion of the incretin hormone glucagon-like peptide 1 (GLP-1). The mechanisms underlying this pathway have not been fully…”
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Stimulation of extrinsic sympathetic nerves differentially affects neurogenic motor activity in guinea pig distal colon
Published in Physiological reports (01-01-2023)“…The speed of pellet propulsion through the isolated guinea pig distal colon in vitro significantly exceeds in vivo measurements, suggesting a role for…”
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Roles of three distinct neurogenic motor patterns during pellet propulsion in guinea‐pig distal colon
Published in The Journal of physiology (01-10-2019)“…Key points Enteric neural circuits enable isolated preparations of guinea‐pig distal colon to propel solid and fluid contents by a self‐sustaining…”
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Sympathetic Pathways Target Cholinergic Neurons in the Human Colonic Myenteric Plexus
Published in Frontiers in neuroscience (17-03-2022)“…The sympathetic nervous system inhibits human colonic motility largely by effects on enteric neurons. Noradrenergic axons, which branch extensively in the…”
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Characterization of viscerofugal neurons in human colon by retrograde tracing and multi-layer immunohistochemistry
Published in Frontiers in neuroscience (16-01-2024)“…Viscerofugal neurons (VFNs) have cell bodies in the myenteric plexus and axons that project to sympathetic prevertebral ganglia. In animals they activate…”
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Characterisation of parasympathetic ascending nerves in human colon
Published in Frontiers in neuroscience (01-12-2022)“…In the human large bowel, sacral parasympathetic nerves arise from S2 to S4, project to the pelvic plexus ("hypogastric plexus") and have post-ganglionic axons…”
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Characterization of projections of longitudinal muscle motor neurons in human colon
Published in Neurogastroenterology and motility (01-10-2019)“…Background The enteric nervous system contains inhibitory and excitatory motor neurons which modulate smooth muscle contractility. Cell bodies of longitudinal…”
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Efficacy and safety of low-dose celecoxib in reducing post-operative paralytic ileus after major abdominal surgery
Published in ANZ journal of surgery (01-12-2015)“…Background A number of interventions have been used to decrease the incidence of post‐operative paralytic ileus. A secondary outcome of a randomized controlled…”
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Long range synchronization within the enteric nervous system underlies propulsion along the large intestine in mice
Published in Communications biology (10-08-2021)“…How the Enteric Nervous System (ENS) coordinates propulsion of content along the gastrointestinal (GI)-tract has been a major unresolved issue. We reveal a…”
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Sugar Responses of Human Enterochromaffin Cells Depend on Gut Region, Sex, and Body Mass
Published in Nutrients (22-01-2019)“…Gut-derived serotonin (5-HT) is released from enterochromaffin (EC) cells in response to nutrient cues, and acts to slow gastric emptying and modulate gastric…”
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5-HT3 and 5-HT4 antagonists inhibit peristaltic contractions in guinea-pig distal colon by mechanisms independent of endogenous 5-HT
Published in Frontiers in neuroscience (01-01-2013)“…Recent studies have shown that endogenous serotonin is not required for colonic peristalsis in vitro, nor gastrointestinal (GI) transit in vivo. However,…”
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Damage from dissection is associated with reduced neuro-musclar transmission and gap junction coupling between circular muscle cells of guinea pig ileum, in vitro
Published in Frontiers in physiology (22-08-2014)“…Excitatory and inhibitory junction potentials of circular smooth muscle cells in guinea pig ileum and colon are suppressed 30-90 min after setting up in vitro…”
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13
Identification of a Rhythmic Firing Pattern in the Enteric Nervous System That Generates Rhythmic Electrical Activity in Smooth Muscle
Published in The Journal of neuroscience (13-06-2018)“…The enteric nervous system (ENS) contains millions of neurons essential for organization of motor behavior of the intestine. It is well established that the…”
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14
Intrinsic sensory neurons provide direct input to motor neurons and interneurons in mouse distal colon via varicose baskets
Published in Journal of comparative neurology (1911) (01-08-2020)“…Connections from intrinsic primary afferent neurons (IPANs), to ascending motor and interneurons have been described in guinea pig colon. These mono‐ and…”
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15
Augmented capacity for peripheral serotonin release in human obesity
Published in International Journal of Obesity (01-11-2018)“…Background/objectives Evidence from animal studies highlights an important role for serotonin (5-HT), derived from gut enterochromaffin (EC) cells, in…”
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Electrophysiological and morphological features of myenteric neurons of human colon revealed by intracellular recording and dye fills
Published in Neurogastroenterology and motility (01-04-2023)“…Background Ex vivo intracellular recordings and dye fills, combined with immunohistochemistry, are a powerful way to analyze the enteric nervous system of…”
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From the organ bath to the whole person: a review of human colonic motility
Published in ANZ journal of surgery (01-03-2024)“…Motor function of the colon is essential for health. Our current understanding of the mechanisms that underlie colonic motility are based upon a range of…”
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Circulating cathepsin S improves glycaemic control in mice
Published in Journal of endocrinology (01-02-2021)“…Cathepsin S (CTSS) is a cysteine protease that regulates many physiological processes and is increased in obesity and type 2 diabetes. While previous studies…”
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Dynamin regulates L cell secretion in human gut
Published in Molecular and cellular endocrinology (15-09-2021)“…The mechanochemical enzyme dynamin mediates endocytosis and regulates neuroendocrine cell exocytosis. Enteroendocrine L cells co-secrete the anorectic gut…”
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Alterations in GLP-1 and PYY release with aging and body mass in the human gut
Published in Molecular and cellular endocrinology (01-12-2023)“…The lining of our intestinal surface contains an array of hormone-producing cells that are collectively our bodies’ largest endocrine cell reservoir. These…”
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