Oleic acid inhibits gap junction permeability and increases glucose uptake in cultured rat astrocytes
Lavado, E; Sanchezabarca, LI; Tabernero, A; Bolanos, JP; Medina, JM
HERO ID
4936446
Reference Type
Journal Article
Year
1997
Language
English
PMID
| HERO ID | 4936446 |
|---|---|
| In Press | No |
| Year | 1997 |
| Title | Oleic acid inhibits gap junction permeability and increases glucose uptake in cultured rat astrocytes |
| Authors | Lavado, E; Sanchezabarca, LI; Tabernero, A; Bolanos, JP; Medina, JM |
| Journal | Journal of Neurochemistry |
| Volume | 69 |
| Issue | 2 |
| Page Numbers | 721-728 |
| Abstract | The role of oleic acid in the modulation of gap junction permeability was studied in cultured rat astrocytes by the scrape-loading/Lucifer yellow transfer technique. Incubation with oleic acid caused a dose-dependent inhibition of gap junction permeability by 79.5% at 50 mu M, and no further inhibition was observed by increasing the oleic acid concentration to 100 mu M. The oleic acid-mediated inhibition of gap junction permeability was reversible and was prevented by bovine serum albumin. The potency of oleic acid-related compounds in inhibiting gap junction permeability was arachidonic acid > oleic acid > oleyl alcohol > palmitoleic acid > stearic acid > octanol > caprylic acid > palmitic acid > methyloleyl ester. Oleic acid and arachidonic acid, but not methyloleyl ester, increased glucose uptake by astrocytes. Neither-oleic acid nor arachidonic acid increased glucose uptake in the poorly coupled glioma C6 cells. These results support that the inhibition of gap junction permeability is associated with the increase in glucose uptake. We suggest that oleic acid may be a physiological mediator of the transduction pathway leading to the inhibition of intercellular communication. |
| Pmid | 9231732 |
| Wosid | WOS:A1997XL15400031 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | dye coupling; intercellular communication; Lucifer yellow; glial cells; glucose uptake |