Abstract
The gastrointestinal motor correlates of vomiting were examined in 8 dogs. Each dog was chronically implanted with extramural strain gage force transducers distributed along the gastrointestinal tract. The following gastrointestinal motor responses accompanied vomiting activated spontaneously or after apomorphine administration (2.5-15 μg/kg, i.v.): (a) a retrograde peristaltic contraction (RPC), (b) a peri-RPC inhibitory period, (c) a post-RPC series of phasic contractions, and (d) a post-RPC inhibitory period. These same motor patterns occurred without the somatomotor responses associated with vomiting but sometimes with regurgitation under the following conditions: (a) spontaneously, (b) one-third of the time after low doses of apomorphine (2.5-5.0 μg/kg, i.v.), or (c) after the intragastric administration of hypertonic saline or a vinegar solution. We concluded that a set of gastrointestinal motor responses accompany vomiting and that this set of responses represents an independent phenomenon. This phenomenon was vagally mediated but only one phase, the RPC, was cholinergically mediated, Our results suggest that the vomiting center may consist of two functionally distinct parts that are activated sequentially: one controlling the gastrointestinal responses and the other the somatomotor responses.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 40-47 |
| Number of pages | 8 |
| Journal | Gastroenterology |
| Volume | 90 |
| Issue number | 1 |
| State | Published - 1986 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Gastroenterology
Cite this
Gastrointestinal motor correlates of vomiting in the dog : Quantification and characterization as an independent phenomenon. / Lang, Ivan M.; Sarna, Sushil K.; Condon, Robert E.
In: Gastroenterology, Vol. 90, No. 1, 1986, p. 40-47.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Gastrointestinal motor correlates of vomiting in the dog
T2 - Quantification and characterization as an independent phenomenon
AU - Lang, Ivan M.
AU - Sarna, Sushil K.
AU - Condon, Robert E.
PY - 1986
Y1 - 1986
N2 - The gastrointestinal motor correlates of vomiting were examined in 8 dogs. Each dog was chronically implanted with extramural strain gage force transducers distributed along the gastrointestinal tract. The following gastrointestinal motor responses accompanied vomiting activated spontaneously or after apomorphine administration (2.5-15 μg/kg, i.v.): (a) a retrograde peristaltic contraction (RPC), (b) a peri-RPC inhibitory period, (c) a post-RPC series of phasic contractions, and (d) a post-RPC inhibitory period. These same motor patterns occurred without the somatomotor responses associated with vomiting but sometimes with regurgitation under the following conditions: (a) spontaneously, (b) one-third of the time after low doses of apomorphine (2.5-5.0 μg/kg, i.v.), or (c) after the intragastric administration of hypertonic saline or a vinegar solution. We concluded that a set of gastrointestinal motor responses accompany vomiting and that this set of responses represents an independent phenomenon. This phenomenon was vagally mediated but only one phase, the RPC, was cholinergically mediated, Our results suggest that the vomiting center may consist of two functionally distinct parts that are activated sequentially: one controlling the gastrointestinal responses and the other the somatomotor responses.
AB - The gastrointestinal motor correlates of vomiting were examined in 8 dogs. Each dog was chronically implanted with extramural strain gage force transducers distributed along the gastrointestinal tract. The following gastrointestinal motor responses accompanied vomiting activated spontaneously or after apomorphine administration (2.5-15 μg/kg, i.v.): (a) a retrograde peristaltic contraction (RPC), (b) a peri-RPC inhibitory period, (c) a post-RPC series of phasic contractions, and (d) a post-RPC inhibitory period. These same motor patterns occurred without the somatomotor responses associated with vomiting but sometimes with regurgitation under the following conditions: (a) spontaneously, (b) one-third of the time after low doses of apomorphine (2.5-5.0 μg/kg, i.v.), or (c) after the intragastric administration of hypertonic saline or a vinegar solution. We concluded that a set of gastrointestinal motor responses accompany vomiting and that this set of responses represents an independent phenomenon. This phenomenon was vagally mediated but only one phase, the RPC, was cholinergically mediated, Our results suggest that the vomiting center may consist of two functionally distinct parts that are activated sequentially: one controlling the gastrointestinal responses and the other the somatomotor responses.
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M3 - Article
VL - 90
SP - 40
EP - 47
JO - Gastroenterology
JF - Gastroenterology
SN - 0016-5085
IS - 1
ER -