Nifedipine inhibits the activation of inflammatory and immune reactions in viral myocarditis.

Abstract:

AIMS:The aim of study is to investigate the effect of nifedipine on viral myocarditis in an animal model. MAIN METHODS:Four-week-old male DBA/2 mice were inoculated with 2 pfu of encephalomyocarditis virus (EMCV) and randomized to nifedipine (n=10) or control (n=10) group. The control group was fed by regular chow and the nifedipine group contained 0.01% of nifedipine. Mast cell density was counted, and expressions of messenger RNAs of stem cell factor (SCF), matrix metalloproteinases (MMPs), pro-collagen I, mast cell proteases, tumor necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6) were evaluated by RT-PCR. KEY FINDINGS:The area of myocardial necrosis was smaller in the nifedipine vs the control group (mean+/-SD, 1.2+/-1.3% vs 3.8+/-1.8%, respectively, P<0.005). The mast cell density (count/mm(2)) was lower in the nifedipine vs the control group (mean+/-SD, 0.23+/-0.16 vs 1.08+/-0.45, respectively, P<0.0005). The expressions of MMPs, mast cell proteases, TNF-alpha, IL-6, SCF and pro-collagen I were lower in the nifedipine group than in the control group (P<0.05). SIGNIFICANCE:Nifedipine inhibited the activation of various participants in inflammatory and immune reactions in EMCV myocarditis.

journal_name

Life Sci

journal_title

Life sciences

authors

Liu W,Shimada M,Xiao J,Hu D,Matsumori A

doi

10.1016/j.lfs.2009.05.018

subject

Has Abstract

pub_date

2009-07-31 00:00:00

pages

235-40

issue

5-6

eissn

0024-3205

issn

1879-0631

pii

S0024-3205(09)00257-4

journal_volume

85

pub_type

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