The relationships between anatomy and motor activity of the colon

Torsoli, A; Ramorino, M. L.; Crucioli, V.

doi:10.1007/bf02233670

Cited by 35 publications

(4 citation statements)

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“…That a humoral mechanism is implicated in the colonic response is suggested by the observations of Frigo, Crema, and Benzi (quoted by Torsoli, Ramorino, and Crucioli, 1968), who reported increased colonic activity after feeding in crosscirculation experiments on cats. Of the possible hormonal mediators other than gastrin, secretin and cholecystokinin-pancreozymin have obviously to be considered, and have been isolated in pure form (Jorpes and Mutt, 1961;Jorpes, Mutt, and Tocsko, 1964).…”

Section: Discussionmentioning

confidence: 89%

Factors controlling colonic motility: Colonic pressures and transit after meals in patients with total gastrectomy, pernicious anaemia, or duodenal ulcer

Holdstock¹,

Misiewicz²

1970

Gut

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SUMMARY The motor responses of the proximal colon, sigmoid, and rectum to the ingestion of a standard meal have been compared in patients with total gastrectomy, pernicious anaemia, or duodenal ulcer. Colonic pressure activity increased during and after food in all the patients, but this was only once associated with propulsive activity. The results suggest that the postprandial pressure activity in the sigmoid colon is greater after total gastrectomy than in the other two groups. It is concluded that entry of food into the upper small intestine is the most important factor in initiating the colonic pressure response to food, since this response does not require the presence of the stomach, acid, antral gastrin, or of vagal innervation.

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Section: Discussionmentioning

confidence: 89%

Factors controlling colonic motility: Colonic pressures and transit after meals in patients with total gastrectomy, pernicious anaemia, or duodenal ulcer

Holdstock¹,

Misiewicz²

1970

Gut

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“…Anatomically, the AC appears to be a continuation of the cecum yet both are separated by the CCJ, which has a measurable length, a high-pressure zone, a sphincter [3][4][5][6][7][8][9], and reacts to cecal or colonic contraction [10]. The current study may shed some light on the motile activity of both the cecum and AC.…”

Section: Discussionmentioning

confidence: 99%

“…In herbivorous and carnivorous animals, such as the dog, a sphincter could be identified at the CCJ [2]. Radiological studies have reported a sphincter, called Busi's sphincter which is located immediately above the ileocecal junction at the CCJ level, separating the cecum from the AC [3][4][5]. Endoscopic studies are also in support of a possible existence of a cecocolonic sphincter (CCS).…”

Section: Introductionmentioning

confidence: 99%

Electromotor Activity of the Cecum and Ascending Colon: The Concept of ‘Individual Pacemakers’

Shafik

Mostafa²,

El-Sibai³

et al. 2004

Eur Surg Res

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Background/Aims: The cecum is described as differing anatomically from the ascending colon (AC); yet their similarity or difference in terms of motile activity has not been studied sufficiently. The cecum is separated from the AC by the cecocolonic junction (CCJ) which contains a cecocolonic sphincter. We assumed that the motile activity of the AC is different from that of the cecum and hypothesized that both the AC and the cecum might have different pacemakers which initiate the motile activity. This hypothesis was investigated in the current study. Methods: The study was performed in 10 subjects (mean age 41.6 ± 12.8 SD years; 7 women) during the repair of huge abdominal incisional hernias. The electric activity was recorded from 2 monopolar electrodes applied each to the cecum, CCJ and AC. The CCJ was then anesthetized by xylocaine and the electric waves of the cecum, CCJ and AC were registered after 10 and 90 min. The test was repeated using normal saline instead of xylocaine. Results: Electric waves were recorded from the cecum, CCJ and AC in the form of monophasic pacesetter (PPs) and action potentials (APs). The PPs occurred regularly and the APs randomly. The frequency, amplitude and conduction velocity of the waves recorded from the CCJ and AC had higher readings than those from the cecum (p < 0.05). The CCJ and AC showed similar frequency and conduction velocity (p > 0.05). Ten minutes after CCJ anesthetization, electric waves were recorded from the cecum but not from the CCJ or AC; however, electric activity returned after 90 min. Saline injection did not affect the electric activity of the cecum, CCJ and AC. Conclusion: The electric wave parameters of the cecum differed from those of the CCJ and AC, suggesting that the motile activity of the CCJ and AC is not a continuation of the motile activity of the cecum and that it might be evoked by 2 different pacemakers. The similarity in frequency and conduction velocity of electric waves of the CCJ and AC, however, most likely denotes that the AC waves are a continuation of those of the CCJ, and that both are evoked by the same pacemaker probably located in the CCJ. The higher amplitude of cecal waves might be due to the thicker cecal musculature compared to that of the AC.

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“…Starting from the early 1980s, due in particular to the seminal myoelectrical studies from the Toulouse group, 2 , 3 new impetus was given to this topic. Although short‐term proximal colonic motor recordings had been previously, but sporadically, reported, 4 , 5 Frexinos and colleagues demonstrated effectively that prolonged (24 h or more) endoluminal colonic electromyography was both feasible and reliable using colonoscopically positioned probes 6 . Shortly after, this laboratory modified their technique by inserting a multilumen manometric probe deep within the viscus, obtaining for the first time 24 h recordings of colonic pressure activity in healthy human subjects under relatively physiological conditions 7 …”

mentioning

confidence: 99%

Motions and emotions: the treatment of depression causes constipation

Bassotti

2000

Neurogastroenterology Motil

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The relationships between anatomy and motor activity of the colon

Cited by 35 publications

References 0 publications

Factors controlling colonic motility: Colonic pressures and transit after meals in patients with total gastrectomy, pernicious anaemia, or duodenal ulcer

Factors controlling colonic motility: Colonic pressures and transit after meals in patients with total gastrectomy, pernicious anaemia, or duodenal ulcer

Electromotor Activity of the Cecum and Ascending Colon: The Concept of ‘Individual Pacemakers’

Motions and emotions: the treatment of depression causes constipation

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