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Related Concept Videos

Gastrointestinal Motility Disorders01:20

Gastrointestinal Motility Disorders

970
Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
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Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists01:28

Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists

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Prokinetic agents are specialized medications that stimulate gastrointestinal (GI) motility, promoting food movement through the GI tract. Dopamine, an inhibitory neurotransmitter, plays a significant role in this process, reducing GI motility and indirectly controlling the speed of digestion. Dopamine receptor antagonists, such as metoclopramide and domperidone, offer a unique advantage as prokinetic agents. By blocking the dopamine receptors, these drugs increase GI motility, improving food...
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Gastric Motility01:16

Gastric Motility

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Gastric motility is the coordinated contraction and relaxation of stomach muscles that convert ingested food into chyme, a semi-liquid substance ready for further digestion in the intestines. The process begins with the vagus nerve inducing the relaxation of the smooth muscles in the fundus and body of the stomach, allowing these regions to expand and accommodate up to approximately 1.5 liters of food and liquid.
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
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Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists01:23

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists

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Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
802
Drugs Affecting GI Tract Motility: Other Laxatives01:20

Drugs Affecting GI Tract Motility: Other Laxatives

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Laxatives are primarily used to alleviate constipation, a common gastrointestinal disorder characterized by infrequent bowel movements and difficulty passing stools. They work by various mechanisms to increase the volume or frequency of bowel movements. The primary modes of action of laxatives include increasing stool bulk, softening the stool, stimulating intestinal motility, and osmotically drawing water into the intestines.
Osmotic or saline laxatives, like magnesium hydroxide or milk of...
915
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

180
Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
180

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Gastrointestinal Motility Monitor GIMM
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GASTROINTESTINAL MOTILITY DISORDERS IN OBESITY.

I Miron1, D L Dumitrascu2

  • 1"Iuliu Hatieganu" University of Medicine and Pharmacy, 3 Medical Clinic, Cluj-Napoca, Romania.

Acta Endocrinologica (Bucharest, Romania : 2005)
|May 8, 2020
PubMed
Summary
This summary is machine-generated.

Obesity alters gastrointestinal (GI) motility, affecting digestion and absorption. Key changes include increased reflux, slowed gastric emptying, and constipation, influenced by the gut-brain axis.

Keywords:
GERDconstipationgastrointestinal motilitygastroparesisobesity

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Area of Science:

  • Gastroenterology
  • Obesity Research
  • Physiology

Background:

  • Obesity significantly impacts gastrointestinal (GI) motility, crucial for digestion and nutrient absorption.
  • This review systematically examines alterations in GI motility throughout the entire GI tract in obese individuals.

Discussion:

  • Obesity is linked to increased gastroesophageal reflux disease and inhibited gastric motility.
  • Distal small bowel transit slows, potentially enhancing digestion and absorption.
  • Constipation is more prevalent in obese individuals compared to normal-weight populations.

Key Insights:

  • The gut-brain axis, involving neural, hormonal, microbial, and cytokine signaling, is central to GI motility disorders in obesity.
  • Complex molecular mechanisms underlie obesity-associated GI motility changes.

Outlook:

  • Current findings provide a foundation for further research into the intricate relationship between obesity and GI motility dysfunction.
  • Understanding these mechanisms is vital for developing targeted therapeutic strategies.