Measurement of pyloric sphincter pressure with miniature transducer under fiber-gastroscope

1984 ◽  
Vol 4 (3) ◽  
pp. 180-181
Author(s):  
Zhang Jin-kyn
Keyword(s):  
Pyloric Sphincter ◽  
Sphincter Pressure

Continuous recording of pyloric sphincter pressure in dogs

1985 ◽  
Vol 30 (7) ◽  
pp. 669-674 ◽  
Author(s):  
Carlos C. Defilippi ◽  
Elsa Gomez
Keyword(s):  
Pyloric Sphincter ◽  
Continuous Recording ◽  
Sphincter Pressure

scholarly journals Extrinsic and intrinsic neural control of pyloric sphincter pressure in the dog.

1988 ◽  
Vol 401 (1) ◽  
pp. 17-38 ◽  
Author(s):  
H D Allescher ◽  
E E Daniel ◽  
J Dent ◽  
J E Fox ◽  
F Kostolanska
Keyword(s):  
Neural Control ◽  
Pyloric Sphincter ◽  
Sphincter Pressure

scholarly journals Atraumatic non-distorting pyloric sphincter pressure studies.

Gut ◽  
1980 ◽  
Vol 21 (10) ◽  
pp. 826-828 ◽  
Author(s):  
A J McShane ◽  
C O'Morain ◽  
J R Lennon ◽  
J B Coakley ◽  
B G Alton
Keyword(s):  
Pyloric Sphincter ◽  
Sphincter Pressure

Food and Gastroesophageal Reflux Disease

2019 ◽  
Vol 26 (19) ◽  
pp. 3497-3511 ◽  
Author(s):  
Teodora Surdea-Blaga ◽  
Dana E. Negrutiu ◽  
Mariana Palage ◽  
Dan L. Dumitrascu
Keyword(s):  
Gastroesophageal Reflux Disease ◽  
Gastroesophageal Reflux ◽  
Lower Esophageal Sphincter ◽  
Reflux Disease ◽  
Current Knowledge ◽  
Positive Association ◽  
Sphincter Pressure ◽  
Low Carbohydrate Diet ◽  
Reflux Symptoms ◽  
Esophageal Sphincter

Gastroesophageal reflux disease is a chronic condition with a high prevalence in western countries. Transient lower esophageal sphincter relaxation episodes and a decreased lower esophageal sphincter pressure are the main mechanisms involved. Currently used drugs are efficient on reflux symptoms, but only as long as they are administered, because they do not modify the reflux barrier. Certain nutrients or foods are generally considered to increase the frequency of gastroesophageal reflux symptoms, therefore physicians recommend changes in diet and some patients avoid bothering foods. This review summarizes current knowledge regarding food and gastroesophageal reflux. For example, fat intake increases the perception of reflux symptoms. Regular coffee and chocolate induce gastroesophageal reflux and increase the lower esophageal exposure to acid. Spicy foods might induce heartburn, but the exact mechanism is not known. Beer and wine induce gastroesophageal reflux, mainly in the first hour after intake. For other foods, like fried food or carbonated beverages data on gastroesophageal reflux is scarce. Similarly, there are few data about the type of diet and gastroesophageal reflux. Mediterranean diet and a very low carbohydrate diet protect against reflux. Regarding diet-related practices, consistent data showed that a “short-meal-to-sleep interval” favors reflux episodes, therefore some authors recommend that dinner should be at least four hours before bedtime. All these recommendations should consider patient’s weight, because several meta-analyses showed a positive association between increased body mass index and gastroesophageal reflux disease.

Morphology of the canine pyloric sphincter in relation to function

1989 ◽  
Vol 67 (12) ◽  
pp. 1560-1573 ◽  
Author(s):  
E. E. Daniel ◽  
I. Berezin ◽  
H. D. Allescher ◽  
H. Manaka ◽  
V. Posey-Daniel
Keyword(s):  
Smooth Muscle ◽  
Substance P ◽  
Smooth Muscle Cells ◽  
Gap Junctions ◽  
Vasoactive Intestinal Polypeptide ◽  
Interstitial Cells Of Cajal ◽  
Circular Muscle ◽  
Interstitial Cells ◽  
Pyloric Sphincter ◽  
Cells Of Cajal

The ultrastructure and immunocytochemistry of the canine distal pyloric muscle loop, the pyloric sphincter, were studied. Cells in this muscle were connected by gap junctions, fewer than in the antrum or corpus. The sphincter had a dense innervation and a sparse population of interstitial cells of Cajal. Most such cells were of the circular muscle type but a few were of the type in the myenteric plexus. Nerves were sometimes associated with interstitial cell profiles, but most nerves were neither close to nor associated with interstitial cells nor close to smooth muscle cells. Nerve profiles were characterized by an unusually high proportion of varicosities with a majority or a high proportion of large granular vesicles. Many of these were shown to contain material immunoreactive for vasoactive intestinal polypeptide (VIP) and some had substance P (SP) immunoreactive material. All were presumed to be peptidergic. VIP was present in a higher concentration in this muscle than in adjacent antral or duodenal circular muscle. Interstitial cells of Cajal made gap junctions to smooth muscle and to one another and might provide myogenic pacemaking activity for this muscle, but there was no evidence of a close or special relationship between nerves with VIP or SP and these cells. The absence of close relationships between nerves and either interstitial cells or smooth muscle cells leaves unanswered questions about the structural basis for previous observations of discrete excitatory responses or pyloric sphincter to single stimuli or nerves up to one per second. In conclusion, the structural observations suggest that this muscle has special neural and myogenic control systems and that interstitial cells may function to control myogenic activity of this muscle but not to mediate neural signals.Key words: vasoactive intestinal polypeptide, interstitial cells of Cajal, neuropeptides, gap junctions, substance P.

BMP signalling specifies the pyloric sphincter

Nature ◽  
10.1038/45439 ◽  
1999 ◽  
Vol 402 (6763) ◽  
pp. 748-749 ◽  
Author(s):  
Devyn M. Smith ◽  
Clifford J. Tabin
Keyword(s):  
Pyloric Sphincter ◽  
Bmp Signalling
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