Constituants alimentaires et motricité digestive

RUCKEBUSCH, Y.; BUENO, L.; FIORAMONTI, J.

doi:10.1051/rnd:19810601

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…The shedding of IS intracellularis preceding the development of clinical signs indicates that infection by IS intracellularis precedes PE. It is unlikely that the IS intracellularis organisms detected in the feces were those with which the pigs were inoculated, as the transit time of the pig alimentary tract varies from under 24 h to 40 h in pigs on a concentrate ration (46,47). Furthermore, pig 11 was necropsied 7 days FIG.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Ileal symbiont intracellularis and porcine proliferative enteritis

et al. 1993

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The relationship between Ileal symbiont (IS) intracellularis, formerly known as a Campylobacter-like organism, and porcine proliferative enteritis (PE) was studied by use of pigs with experimentally transmitted PE. Twenty one pigs were experimentally inoculated with homogenized ileal mucosa from a pig that died with PE, and 7 were maintained as uninoculated controls. Fecal samples were collected, and pigs were necropsied weekly postinoculation. Light microscopy and electron microscopy were used to examine tissues for lesions of PE and infectious agents. DNA was extracted from the fecal samples and assayed for the presence of sequences specific for IS intracellularis by dot blot hybridization and polymerase chain reaction amplification. IS intracellularis was detected by the polymerase chain reaction in the feces of 20 of 21 inoculated pigs but not in the feces of uninoculated pigs. Seven inoculated pigs but no uninoculated pigs were detected shedding IS intracellularis by dot blot hybridization. Shedding was detected 1 to 5 weeks after inoculation, and clinical signs were seen in the second to fifth weeks after inoculation. Few pigs without lesions of PE were found to shed IS intracellularis. There was a highly significant association between the presence of IS intracellularis in feces or tissue and the presence of microscopic proliferative lesions and between the severity of the lesions of PE and the percentage of IS intracellularis-infected intestinal crypts. Pigs that ceased shedding IS intracellularis were significantly less likely to have proliferative lesions. These and previous reports are consistent with the hypothesis that IS intracellularis is a necessary causative agent of PE.

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Section: Discussionmentioning

confidence: 99%

Relationship between Ileal symbiont intracellularis and porcine proliferative enteritis

et al. 1993

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“…An other fact which determines the MMC pattern of intestinal motility is the length of the small bowel Fleckenstein et al, 1982], The gastric emptying and the luminal transport in the proximal half of the intestine are quite rapid, but in the distal part of the small bowel, they are extensively slowed down in the rat [Derblom et al, 1966;Nilsson et al, 1973;Purdon et al, 1973;Borella and Lippman, 1980], In consequence, the ileum works as a functional reservoir for unab sorbed solids [Kerlin and Phillips, 1983]. It is already known that the appearance of MMC and the distribution of the 3 phases may be largely modified by luminal factors such as liquid or solid form, osmolarity, volume and pH of the luminal content [Itoh et al, 1980;Ruckebusch et al. 1981].…”

Section: Discussionmentioning

confidence: 99%

Electromyographic Characteristics of Small Bowel Motility in the Rat

Wittmann¹,

Crenner²,

Felder³

et al. 1986

Eur Surg Res

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Rats are widely used in intestinal motility studies, but no precise observation has yet been carried out on the organization of motility throughout the whole small bowel of the rat. The aim of this work was to investigate the characteristics of small intestinal motility of the rat using an electromyographic technique. The variables describing the pattern of occurrence of the migrating myoelectric complex (MMC) were studied as well as the relative distribution of the 3 phases within the MMC cycles. The mean duration of the MMC was 20 min on the jejunum, and it increased up to twofold along the ileum. The propagation of the MMCs was regular in the jejunum, but about half the MMCs disappeared along the ileum and did not reach the caecum. The electromyographic characteristics of the jejunum are greatly different from those of the ileum, and the motility of a segment is not representative of the whole small bowel motility. Considering these particularities of intestinal motility, rats differ in many details from other species.

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“…In physiological situations, the postprandial period is followed by the return of MMCs. These MMCs present the same characteris tics (total duration of cycles and distribution of phases) as those seen during a prolonged period of fasting [20,30]. After jejunal and ileal resections, the return of MMCs in the ileum after feeding is characterized by shorter MMC cycles compared to control values.…”

Section: Discussionmentioning

confidence: 74%

Changes in Motility after Jejunal and Heal Resection: Electromyographic Study in Rats

Wittmann¹,

Crenner²,

Pousse³

et al. 1985

Digestion

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The aim of this work was to compare the effects of massive jejunal and ileal resections on intestinal motility using an electromyographic technique. Male Wistar rats were used: in the first group a massive jejunal resection was performed, conserving a 7-cm segment after the ligament of Treitz; the rats of the second group underwent an ileal resection, preserving 7 cm of the terminal ileum. Motility was studied at the 10th and 30th postoperative days by means of electrodes implanted throughout the remaining bowel and was expressed by the pattern of recurrence of the migrating myoelectric complex (MMC). In a fasting state, in both transected and resected animals at the 10th postoperative day, the gradient in the duration of MMC along the intestine still existed. However, on the 30th postoperative day, in animals with jejunal resection only, there was an adaptive process: the duration of MMC in the remaining jejunum was significantly increased to the duration in the ileum. After the end of the postprandial inhibition of the appearance of the MMC, on the 10th postoperative day there was a significant decrease in the duration of MMC in the ileum in both types of resection, compared to the controls. However, on the 30th postoperative day, the duration of MMC returned to its control value. In conclusion, jejunal resection seems to induce more important adaptive processes in intestinal motility than does ileal resection. The different results are discussed.

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Constituants alimentaires et motricité digestive

Abstract: Summary. Dietary components and digestive motility.The motor profiles of the small and the large intestine are described in terms of migrating myoelectric patterns in the small bowel and of long to short spike burst ratios in the colon.

Cited by 8 publications

References 6 publications

Relationship between Ileal symbiont intracellularis and porcine proliferative enteritis

Relationship between Ileal symbiont intracellularis and porcine proliferative enteritis

Electromyographic Characteristics of Small Bowel Motility in the Rat

Changes in Motility after Jejunal and Heal Resection: Electromyographic Study in Rats

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