Effects of transection on small intestinal slow-wave propagation velocity

Diamant, NE; Wong, James; Chen, L

doi:10.1152/ajplegacy.1973.225.6.1497

Cited by 11 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with tissues that possess fibrils with a crimped structure, such as the rat tail (Gathercole and Keller, 1978), the hen tendon showed collagen fibrils arranged unidirectionally, which may be relevant to the formation of the wavy structure. Accordingly, the biochemical characteristics and presumably physiological roles of these wavy structures appear to be considerably distinct from those of the crimped structures reported previously (Berkovitz, 2000;Diamant et al, 1973;Gathercole and Keller, 1978;Orberg et al, 1983;Shah et al, 1982).…”

Section: Discussioncontrasting

confidence: 57%

“…At present, it is not known whether the wavy structure of collagens were formed as the result of formation of the mineralizing particles, or if this structure caused the production of the mineral particles. The crimped structure of collagen fibrils has been found in connective tissues, namely, in tendons, ligaments, and intestinal wall (Diamant et al, 1973;Gathercole and Keller, 1978;Orberg et al, 1983;Shah et al, 1982). This structure was also found in a mineralizing tissue, i.e., the intra-articular disc and articular surfaces of the human temporomandibular joint (Berkovitz, 2000).…”

Section: Discussionmentioning

confidence: 94%

See 1 more Smart Citation

Two forms of apatite deposited during mineralization of the hen tendon

Ono

Nemoto

2005

Matrix Biology

View full text Add to dashboard Cite

Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 94%

Two forms of apatite deposited during mineralization of the hen tendon

Ono

Nemoto

2005

Matrix Biology

View full text Add to dashboard Cite

“…Disturbances in the frequency and propagation of myoelectric activity through smooth muscle of the gut wall at sites distal to re-entrant cannulas have been observed in sheep (Poncet, Dimova, Leveille & Dardillat, 1977) and pigs (Laplace & Tomassone, 1970). Indeed similar disorders in motility were recorded electromyographically after simple transaction and resection of the small intestine of dogs, cats and sheep (Grivel & Ruckebusch, 1971, 1972Diamant, Wong & Chen, 1973;Bueno & Praddaude, 1978). More recently Wenham (1979), using a radiological videotape method, observed abnormalities in the propulsion of digesta through re-entrant duodenal cannulas in sheep, in particular the flange and barrel of these cannulas offered much resistance to the movement of digesta.…”

Section: Introductionmentioning

confidence: 85%

Effect of duodenal cannulation on abomasal emptying and secretion in the preruminant calf.

Sissons¹,

Smith²

1982

The Journal of Physiology

View full text Add to dashboard Cite

SUMMARY1. The effect of re-entrant cannulation of the duodenum on digesta flow from, and secretion into, the abomasum of the preruminant calf was studied.2. Calves fitted with abomasal cannulas and, at the same time or later, with re-entrant duodenal cannulas were given, by abomasal infusion, test feeds containing glucose and minerals. Net volumes of secretary fluids entering the abomasum and amounts of digesta flowing to the duodenum were estimated from changes in concentrations of water soluble markers (phenol red and polyethylene glycol) in digesta samples collected from an abomasal cannula.3. Amounts of abomasal contents, net volumes of secretary fluids and digesta flow to the duodenum for calves fitted with only an abomasal cannula did not differ significantly from those obtained for animals with abomasal and re-entrant duodenal cannulas.4. Collecting digesta from a re-entrant cannula and returning it promptly to the animal did not affect net volumes of secretary fluids. Under these conditions with cannulas open to the atmosphere, rather than being connected together, the amounts of digesta entering the duodenum increased slightly but differences were not significant.5. Weight gains of calves fitted with abomasal and duodenal cannulas were similar to those of intact animals.6. It is concluded that in calves receiving liquid feeds duodenal re-entrant cannulation is a suitable preparation for investigating digestive processes of the abomasum.

show abstract

“…In our earlier study, we saw no clear evidence of propagation, but we supposed that further analysis of the video recording could give information about slow‐wave propagation. Most studies based on microelectrode recordings were limited to only a few measurement points 7 –9 and very little information is available on the kinematics of slow‐wave propagation. Nevertheless, the importance of slow waves in intestinal motility physiology is well established by the studies of their modification by physiological 10 or pathological 11 events.…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial rhythmicity of jejunal wall motion in rats

Bouchoucha

Benard

Dupres

1999

Neurogastroenterology Motil

View full text Add to dashboard Cite

Isolated segments of jejunum of fasted rats exhibit regular rhythmic contractions at the same frequency as slow-waves. The aim of the present study was to search for a possible spatial rhythmicity of this activity. Using a video imaging technique, jejunal segments of 50 rats were studied. Only experiments (n=76) with no propagated contractions at visual inspection were included in the study. After the measurement, a spectral analysis of the diameter variations was performed. The bands were characterized by four parameters: level, main frequency, amplitude and phase. At each level, the phase varied, suggesting that the same rhythmic phenomenon occurred, but with a delay as a function of the spatial position. In 58 measurements, the rhythmic activity had a frequency near 0.50 Hz and in 18, near 0.25 Hz. Phase difference was found in 32 segments (42%). The variation with distance was linear as a function of time and its length was greater for the low-frequency group than for the high-frequency group (25.6 +/- 9.4 vs. 33.3 +/- 5.2 mm, P=0.015). By contrast, the speed of propagation was not significantly different. The wavelength lambda of the spatial rhythmicity was 27.7 +/- 23.2 and 9.8 +/- 4.2 mm (P=NS) in the high- and low-frequency groups, respectively. This corresponds to a speed of propagation of v=lambda*f, where f is the frequency of the wall motion (7.0 +/- 5.2 vs. 5.2 +/- 2.2 mm sec-1, P=NS).

show abstract

Effects of transection on small intestinal slow-wave propagation velocity

Cited by 11 publications

References 0 publications

Two forms of apatite deposited during mineralization of the hen tendon

Two forms of apatite deposited during mineralization of the hen tendon

Effect of duodenal cannulation on abomasal emptying and secretion in the preruminant calf.

Temporal and spatial rhythmicity of jejunal wall motion in rats

Contact Info

Product

Resources

About