Linked Life Data

12383862

Source:http://linkedlifedata.com/resource/pubmed/id/12383862

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2002-10-17
pubmed:abstractText
Proctolin (Arg-Tyr-Leu-Pro-Thr-OH) and crayfish peptide "DF(2)" (Asp-Arg-Asn-Phe-Leu-Arg-Phe-NH(2)) enhance spontaneous contractions of isolated crayfish hindguts. Both peptides increase the frequency and amplitude of spontaneous, rapid contractions. Proctolin induces a slow contraction, which gives the appearance of an increase in overall tonus. DF(2) has no such effect. To determine whether the peptides affect both longitudinal and circular muscles, hindguts were cut into longitudinal strips and into rings, and contractions were recorded from each. The longitudinal strips generated only rapid contractions, and both peptides increased the frequency and amplitude of such contractions without significantly altering tonus. Rapid contractions were observed in only 1 of 14 preparations of rings. Proctolin induced slow contractions in the rings, and DF(2) had no such effect. The results indicate that neuropeptides have different effects on circular and longitudinal muscles of hindgut.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0196-9781
pubmed:author
pubmed:issnType
Print
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1751-57
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Differential effects of neuropeptides on circular and longitudinal muscles of the crayfish hindgut.
pubmed:affiliation
Department of Biological Sciences, Brock University, 500 Glenridge Avenue, St. Catharines, Ont., Canada L2S 3A1. amercier@spartan.ac.brocku.ca
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't