In:
Mediators of Inflammation, Hindawi Limited, Vol. 1, No. 6 ( 1992), p. 411-417
Abstract:
The effect of selective PDE-I (vinpocetine), PDE-III (milrinone, CI-930), PDE-IV (rolipram, nitroquazone), and PDE-V (zaprinast) isozyme inhibitors on TNF-α and IL-1β production from LPS stimulated human monocytes was investigated. The PDE-IV inhibitors caused a concentration dependent inhibition of TNF-α production, but only partially inhibited IL-1β at high concentrations. High concentrations of the PDE-III inhibitors weakly inhibited TNF-α, but had no effect on IL-1β production. PDE-V inhibition was associated with an augmentation of cytokine secretion. Studies with combinations of PDE isozyme inhibitors indicated that PDE-III and PDE-V inhibitors modulate rolipram's suppression of TNF production in an additive manner. These data confirm that TNF-α and IL-1β production from LPS stimulated human monocytes are differentially regulated, and suggest that PDE-IV inhibitors have the potential to suppress TNF levels in man.
Type of Medium:
Online Resource
ISSN:
0962-9351
,
1466-1861
DOI:
10.1155/S0962935192000620
Language:
English
Publisher:
Hindawi Limited
Publication Date:
1992
detail.hit.zdb_id:
2008065-7
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