Nov 30, 2000

beta(2)-adrenoceptor agonist suppresses renal tumour necrosis factor and enhances interleukin-6 gene expression induced by endotoxin

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
A NakamuraT Kohsaka

Abstract

beta(2)-Adrenoceptor activation regulates tumour necrosis factor (TNF)-alpha and interleukin-6 (IL-6) production in cultured renal cells. However, it remains uncertain whether, in vivo, the administration of beta(2)-adrenoceptor agonists regulate renal TNF-alpha and IL-6 mRNA following lipopolysaccharide (LPS) stimulation to cause endotoxaemia. This study was performed in order to evaluate the effect of beta(2)-adrenoceptor agonist on renal TNF-alpha and IL-6 production. Four-week-old Wistar rats pre-treated with the beta(2)-adrenoceptor agonist terbutaline or formoterol, and/or the beta- and beta(2)-adrenoceptor antagonists (propanolol, ICI118,551), were injected with LPS (1 mg i.p.), and then 2, 4 or 6 h later, kidneys (cortex, medulla), spleen, thymus and plasma were collected to assay TNF-alpha and IL-6 mRNA levels and their respective protein release. Administration of beta(2)-adrenoceptor agonists suppressed TNF-alpha mRNA expression in the whole kidney, by 61% (P<0.05), as well as plasma, spleen and thymus TNF-alpha protein and mRNA expression 2 hours after injection of LPS. On the other hand, although IL-6 levels in plasma, spleen and thymus mRNA expression were suppressed significantly by administration of beta(2)-adre...Continue Reading

Mentioned in this Paper

Cortex Bone Disorders
Adrenal Cortex Diseases
Endotoxemia
Tumor Necrosis Factor-alpha
Renal Pyramid Structure
Spleen
Entire Medulla of Kidney
Entire Medulla Oblongata
Neoplasm of Uncertain or Unknown Behavior of Thymus
Tnf

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