Effect of Nitric Oxide Donors on Isoprenaline-Induced Lipolysis in Rat Epididymal Adipose Tissue: Studies in Isolated Adipose Tissues and Immobilized Perfused Adipocytes

Title:

Effect of Nitric Oxide Donors on Isoprenaline-Induced Lipolysis in Rat Epididymal Adipose Tissue: Studies in Isolated Adipose Tissues and Immobilized Perfused Adipocytes

Creator:

Dagmar Lincová, Drahomíra Mišeková, Eva Kmoníčková, Canová, N., and Hassan Farghali

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:5b2086aa-5b3d-49c0-bdcc-9887da522daa
uuid:5b2086aa-5b3d-49c0-bdcc-9887da522daa
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, Adipose tissue, Lipid mobilization, Nitric oxide, Isoprenaline, Molsidomine, Sodium nitroprusside, 14, and 612

Type:

article, studie, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

The present investigation was directed to study the effect of in vitro or ex vivo NO donors, sodium nitroprusside and molsidomine, using isolated sliced adipose tissue or in the form of immobilized and perfused adipocytes on the basal and isoprenaline-stimulated lipolysis. The results demonstrated that 1) in vitro application of sodium nitroprusside to perfused adipocytes or molsidomine to sliced adipose tissues affects isoprenaline-induced lipolysis in two ways, an increase in lipolysis at low isoprenaline concentrations (which means the sensitization of adipose tissues to adrenergic effect by NO) and decreased adrenergic agonist-stimulated lipolysis at higher concentration of isoprenaline (a decrease in the maximum lipolytic effect of isoprenaline), 2) low concentrations of molsidomine alone induced lipolysis from adipose tissue which attained more than 60 % of that by isoprenaline (pD2 value for molsidomine = 11.2, while pD2 for isoprenaline = 8.17) while sodium nitroprusside did not affect the basal lipolysis significantly, 3) in vivo administration of molsidomine for 2 days reduced the maximum lipolytic effect of isoprenaline and (only non-significantly) increased the sensitivity to low doses of isoprenaline. In conclusion the present data demonstrate that NO plays an important role in adrenergic lipolysis in adipose tissues and further investigations are needed to unravel the exact role of NO in lipolysis., D. Lincová, D. Mišeková, E. Kmoníčková, N. Canová, H. Farghali., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2002 Volume:51 | Number:4

Harvested from:

CDK

Metadata only:

false