Logo Medical Science Monitor

Call: +1.631.470.9640
Closed: National Holiday

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

01 October 2007

The effect of gastric overfilling on the pharyngo-esophageal and lower esophageal sphincter: A possible factor in restricting food intake

Ahmed Shafik, Ali A Shafik, Olfat El Sibai, Ismail A Shafik

Med Sci Monit 2007; 13(10): BR220-224 :: ID: 502338

Abstract

& α Background: How afferent activity in the gut achieves the required ingestion control has not been established. The authors hypothesized that gastric overdistension effects an increase in pharyngo-esophageal and lower esophageal sphincter activity aimed at inhibiting ingestion.
Material/Methods: The study comprised 16 mongrel dogs. Under anesthesia, one balloon-tipped catheter was placed in the stomach, another within the lower esophageal sphincter (LES), and a third within the pharyngo-esophageal sphincter (PES). The gastric balloon was filled with H[sub]2[/sub]O in increments of 10 ml and LES and PES pressures were recorded. The test was repeated after individual gastric, LES, and PES anesthetization.
Results: Gastric balloon filling with more than 20 ml of H[sub]2[/sub]O showed progressively increasing LES pressure up to 110–120 ml of gastric filling, beyond which the pressure exhibited no further increase upon incrementally increased gastric filling volume. PES pressure increased only with a gastric filling volume exceeding 100–110 ml and continued to increase with increasing gastric filling. Gastric filling as above while the stomach, LES, and PES were separately anesthetized produced no LES or PES pressure response.
Conclusions: LES and PES appear to contract on gastric filling; PES responds only to excess gastric filling. It seems that LES and PES response to gastric filling is mediated through a reflex which the authors call the "gastro-esophagopharyngeal reflex" (GEPR). Changes in the evoked response would indicate a defect in the reflex pathway. GEPR might thus serve as an investigative tool in the diagnosis of gastroesophageal disorders, although further studies are required. 

Keywords: Catheterization, Dogs, Esophageal Sphincter, Lower - physiopathology, Feeding Behavior - physiology, Pharynx - physiology, Pressure, Stomach - physiology, Water

Add Comment 0 Comments

Editorial

01 February 2025 : Editorial  

Editorial: Current Approaches to Screening for Lung Cancer in Smokers and Non-Smokers

Dinah V. Parums

DOI: 10.12659/MSM.948255

Med Sci Monit 2025; 31:e948255

0:00

In Press

Review article  

Hydrogels in Oral Disease Management: A Review of Innovations in Drug Delivery and Tissue Regeneration

Med Sci Monit In Press; DOI: 10.12659/MSM.946122  

Clinical Research  

Procedure Dynamics in Transfemoral vs Transradial Cerebral Angiography: A Retrospective Study

Med Sci Monit In Press; DOI: 10.12659/MSM.947603  

Clinical Research  

Predicting Cerebral Small Vessel Disease Burden Based on Thromboelastography in Patients with Acute Ischemi...

Med Sci Monit In Press; DOI: 10.12659/MSM.946303  

Clinical Research  

Long-Term Outcomes of Implanon in Managing Adenomyosis: A 3-Year Prospective Study

Med Sci Monit In Press; DOI: 10.12659/MSM.945972  

Most Viewed Current Articles

17 Jan 2024 : Review article   6,969,459

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799

0:00

16 May 2023 : Clinical Research   701,879

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387

0:00

01 Mar 2024 : Editorial   25,628

Editorial: First Regulatory Approvals for CRISPR-Cas9 Therapeutic Gene Editing for Sickle Cell Disease and ...

DOI :10.12659/MSM.944204

Med Sci Monit 2024; 30:e944204

0:00

28 Jan 2024 : Review article   20,173

A Review of IgA Vasculitis (Henoch-Schönlein Purpura) Past, Present, and Future

DOI :10.12659/MSM.943912

Med Sci Monit 2024; 30:e943912

0:00

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750