Linked Life Data

3943605

Source:http://linkedlifedata.com/resource/pubmed/id/3943605

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1986-3-6
pubmed:abstractText
A 24 h pretreatment of MRC5 fibroblasts with the protein kinase C activator 12-O-tetradecanoylphorbol 13-acetate (TPA) induced a marked decrease in low density lipoprotein (LDL) internalization and degradation; the maximal effect (about 55% decrease) was observed for 10(-7) M TPA. LDL binding was reduced about 35-40%. A significant decrease (about 25%) in LDL internalization was observed after a 2 h incubation of cells with the drug, but longer incubation times (4-6 h) led to a greater effect. Another tumor promoter, phorbol 12,13-dibutyrate decreased LDL internalization by about 35%, whereas the non-tumor promoting 4 alpha-phorbol 12,13-didecanoate had no effect. The protein kinase C inhibitor alpha-cobrotoxin partially antagonized the inhibitory effect of TPA on LDL internalization. The non-phorbol tumor promoter mezerein, another protein kinase C activator, decreased LDL uptake by about 50%. Finally, it was found that TPA had no significant effect on the affinity of the receptor for the LDL. These results suggest a role for protein kinase C in the LDL pathway in cultured human fibroblasts.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0014-5793
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
195
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
135-9
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Phorbol esters inhibit low density lipoprotein processing by cultured human fibroblasts.
pubmed:publicationType
Journal Article