Effects of three anti-TNF-alpha drugs: etanercept, infliximab and pirfenidone on release of TNF-alpha in medium and TNF-alpha associated with the cell in vitro.

Abstract:

:Tumor necrosis factor-alpha (TNF-alpha) is a vital component of the inflammatory process and its aberrant over-expression has been linked to numerous disease states. New treatment strategies have sought to reduce circulating TNF-alpha, either with neutralizing anti-TNF-alpha binding proteins such as etanercept or via drugs that inhibit de novo TNF-alpha synthesis like pirfenidone. In the present study, we examined the effects of both classes of drugs on secreted and cell-associated TNF-alpha produced by THP-1 cells. All of the tested drugs significantly reduced secreted levels of bioactive TNF-alpha following stimulation with LPS as measured by bioassay. However, etanercept-treated cells had approximately six-fold higher levels of cell-associated TNF-alpha compared with that of the LPS-alone treatment group. Surprisingly, LPS+infliximab treated cells did not increase cell-associated TNF-alpha relative to the LPS-alone treatment. Pirfenidone significantly reduced both secreted and cell-associated TNF-alpha levels. These drug-related differences in cell-associated TNF-alpha may have broad implications in the future for the therapeutic uses of anti-TNF-alpha drugs in the management of TNF-alpha diseases.

journal_name

Int Immunopharmacol

authors

Grattendick KJ,Nakashima JM,Feng L,Giri SN,Margolin SB

doi

10.1016/j.intimp.2008.01.013

subject

Has Abstract

pub_date

2008-05-01 00:00:00

pages

679-87

issue

5

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(08)00015-5

journal_volume

8

pub_type

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