Linked Life Data

2442382

Source:http://linkedlifedata.com/resource/pubmed/id/2442382

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1987-10-19
pubmed:abstractText
Two types of cuticular strain detectors, the campaniform sensilla on the haltere of the blowfly, Calliphora vicina, and the slit sensilla on the tibia of the spider, Cupiennius salei, were investigated. In campaniform sensilla a transepithelial voltage (43.6 +/- 10.7 mV), which depends on an intact metabolism, occurs. In spider slit sensilla no transepithelial voltage exists. The occurrence and the lack of a transepithelial voltage is paralleled with differences in the ionic composition of the receptor lymph in the two arthropod sensilla. We used double-barrelled ion-selective microelectrodes to measure potassium and calcium content in the receptor lymph with respect to the hemolymph. The potassium concentration in campaniform sensilla (121 +/- 15 mM) is five times larger than that of the wing hemolymph (25 +/- 7 mM) and nine times larger than that of the haltere hemolymph (13 +/- 3 mM). These differences are statistically significant. The calcium concentration in campaniform sensilla (0.8 +/- 0.5 mM) does not differ significantly from that of the hemolymph (1.2 +/- 0.7 mM). In spider slit sensilla no significant difference occurs between the potassium concentration of the receptor lymph (9.5 mM +/- 5.5 mM) and that of the hemolymph (8 +/- 3 mM). The calcium concentration of the hemolymph (1.6 +/- 0.9 mM) is 3 times higher than that of the receptor lymph (0.6 +/- 0.3 mM). This difference is significant.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0340-7594
pubmed:author
pubmed:issnType
Print
pubmed:volume
161
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
329-33
pubmed:dateRevised
2009-6-4
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
K+ and Ca++ in the receptor lymph of arthropod cuticular mechanoreceptors.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't