Effects of anesthesia and surgical procedures on intestinal myoelectric activity in rats

Buéno, Lionel; Ferré, Jean‐Pierre; Ruckebusch, Y.

doi:10.1007/bf01072353

Cited by 127 publications

(78 citation statements)

References 14 publications

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“…Uncomplicated ileus has transient Opening the peritoneum is known to abolish MMC activity, but cutting only the skin has no effect on MMC activity. 19 In a previous study, we showed that recovery ofgastric emptying and transit time are more rapid after laparoscopic colectomy than open colectomy in dogs.28 In the present study, only gastric emptying was delayed after open cholecystectomy. Laparoscopic abdominal surgery, therefore, does seem to offer some advantage in recovery ofgastrointestinal motility compared with celiotomy, based on the results ofour investigations.…”

Section: Discussionmentioning

confidence: 47%

Recovery of Fasted and Fed Gastrointestinal Motility After Open Versus Laparoscopic Cholecystectomy in Dogs

et al. 1996

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ObjectiveThe authors investigate the recovery of gastrointestinal motility in the fed and fasted state after laparoscopic and open cholecystectomy. Summary Background DataClinical recovery after laparoscopic cholecystectomy is known to be more rapid than after conventional open cholecystectomy. However, the actual effect of a laparoscopic approach on gastrointestinal motility, particularly fed-state motility, is not well investigated. MethodsLaparoscopic (LAP, n = 6) or open (OPEN, n = 6) cholecystectomy was performed in 12 dogs. Bipolar recording electrodes were placed on the antrum, small intestine, and the transverse and descending colon, and fasting myoelectric data were recorded after operation. Solid meal gastric emptying studies were performed before surgery and on postoperative days 1 and 2. Transit time studies were performed using 10 radiopaque markers. ResultsGastric emptying was significantly delayed in the OPEN group at 120 minutes on postoperative day 1 compared with pre-operative emptying (p < 0.05), but was not delayed on postoperative day 2. Gastric emptying was not delayed in the LAP group after operation. Transit time was the same between groups. Gastric dysrhythmias were more frequent on postoperative day 3 (p < 0.05) in the OPEN group. There were no significant differences in the presence, cycle length, or propagation velocity of the migrating motor complex on any postoperative day. Discrete or continuous electrical response activity in the colon was observed by postoperative day 1 in both groups. ConclusionsFed-state gastric motility is the only parameter for which laparoscopic cholecystectomy showed an improvement in postoperative recovery. Recovery of fasted gastrointestinal motility in dogs is equally rapid after either operation. 413

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Section: Discussionmentioning

confidence: 47%

Recovery of Fasted and Fed Gastrointestinal Motility After Open Versus Laparoscopic Cholecystectomy in Dogs

et al. 1996

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“…Fish were anaesthetised during the course of the experiment, which may have altered the frequency, amplitude and propagation speed of the contractions (Buéno et al, 1978;Fujimiya and Inui, 2000). For example, in vivo gastrointestinal transit in rats was significantly…”

Section: Discussionmentioning

confidence: 99%

“…So far, the only in vivo studies involve larval zebrafish (Danio rerio) and halibut (Hippoglossus hippoglossus), identifying anterograde and retrograde propagating contractions (Holmberg et al, 2007;Holmberg et al, 2006;Holmberg et al, 2003;Holmberg et al, 2004;Ronnestad et al, 2000). However, as few in vivo motility studies are performed on conscious animals, it should be kept in mind that some anaesthetics may suppress or modify normal motility patterns (Buéno et al, 1978;Fujimiya and Inui, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of feeding on in vivo motility patterns in the proximal intestine of shorthorn sculpin (Myoxocephalus scorpius)

Brijs

Hennig

Axelsson

et al. 2014

Journal of Experimental Biology

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This is the first study to catalogue the diverse array of in vivo motility patterns in a teleost fish and how they are affected by feeding. Video recordings of exteriorised proximal intestine from fasted and fed shorthorn sculpin (Myoxocephalus scorpius) were used to generate spatio-temporal maps to portray and quantify motility patterns. Propagating and non-propagating contractions were observed to occur at different frequencies and durations. The most apparent difference between the feeding states was that bands of relatively high amplitude contractions propagating slowly in the anal direction were observed in all fasted fish (N=10) but in only 35% of fed fish (N=11). Additionally, fed fish displayed a reduced frequency (0.21±0.03 versus 0.32±0.06 contractions min −1 ) and rhythmicity of these contractions compared with fasted fish. Although the underlying mechanisms of these slow anally propagating contractions differ from those of mammalian migrating motor complexes, we believe that they may play a similar role in shorthorn sculpin during the interdigestive period, to potentially remove food remnants and prevent the establishment of pathogens. 'Ripples' were the most prevalent contraction type in shorthorn sculpin and may be important during mixing and absorption. The persistence of shallow ripples and pendular movements of longitudinal muscle after tetrodotoxin (1 μmol l −1 ) treatment suggests these contractions were myogenic in origin. The present study highlights both similarities and differences in motility patterns between shorthorn sculpin and other vertebrates, as well as providing a platform to examine other aspects of gastrointestinal functions in fish, including the impact of environmental changes.

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“…The slight differences in frequency can most likely be attributed to the effects of anaesthesia, which are known to alter the contraction frequency in a range of mammals (Bueno et al, 1978;Fujimiya and Inui, 2000). During the transition from FW to SW, intestinal contractile activity of rainbow trout gradually increased and plateaued at a significantly elevated level after ∼2 days in SW.…”

Section: Temporal Changes In Intestinal Motility During a Transition mentioning

confidence: 99%

Exposure to seawater increases intestinal motility in euryhaline rainbow trout (Oncorhynchus mykiss)

Brijs

Hennig

Gräns

et al. 2017

Journal of Experimental Biology

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Upon exposure to seawater, euryhaline teleosts need to imbibe and desalinate seawater to allow for intestinal ion and water absorption, as this is essential for maintaining osmotic homeostasis. Despite the potential benefits of increased mixing and transport of imbibed water for increasing the efficiency of absorptive processes, the effect of water salinity on intestinal motility in teleosts remains unexplored. By qualitatively and quantitatively describing in vivo intestinal motility of euryhaline rainbow trout (Oncorhynchus mykiss), this study demonstrates that, in freshwater, the most common motility pattern consisted of clusters of rhythmic, posteriorly propagating contractions that lasted ∼1-2 min followed by a period of quiescence lasting ∼4-5 min. This pattern closely resembles mammalian migrating motor complexes (MMCs). Following a transition to seawater, imbibed seawater resulted in a significant distension of the intestine and the frequency of MMCs increased twofold to threefold with a concomitant reduction in the periods of quiescence. The increased frequency of MMCs was also accompanied by ripple-type contractions occurring every 12-60 s. These findings demonstrate that intestinal contractile activity of euryhaline teleosts is dramatically increased upon exposure to seawater, which is likely part of the overall response for maintaining osmotic homeostasis as increased drinking and mechanical perturbation of fluids is necessary to optimise intestinal ion and water absorption. Finally, the temporal response of intestinal motility in rainbow trout transitioning from freshwater to seawater coincides with previously documented physiological modifications associated with osmoregulation and may provide further insight into the underlying reasons shaping the migration patterns of salmonids.

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Effects of anesthesia and surgical procedures on intestinal myoelectric activity in rats

Cited by 127 publications

References 14 publications

Recovery of Fasted and Fed Gastrointestinal Motility After Open Versus Laparoscopic Cholecystectomy in Dogs

Recovery of Fasted and Fed Gastrointestinal Motility After Open Versus Laparoscopic Cholecystectomy in Dogs

Effects of feeding on in vivo motility patterns in the proximal intestine of shorthorn sculpin (Myoxocephalus scorpius)

Exposure to seawater increases intestinal motility in euryhaline rainbow trout (Oncorhynchus mykiss)

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