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2015 ; 10
(11
): e0142456
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TAK-242, a Toll-Like Receptor 4 Antagonist, Protects against Aldosterone-Induced
Cardiac and Renal Injury
#MMPMID26556241
Zhang Y
; Peng W
; Ao X
; Dai H
; Yuan L
; Huang X
; Zhou Q
PLoS One
2015[]; 10
(11
): e0142456
PMID26556241
show ga
Cardiovascular and renal inflammation induced by Aldosterone (Aldo) plays an
important role in the pathogenesis of hypertension and renal fibrosis. Toll-like
receptor 4 (TLR4) signaling contributes to inflammatory cardiovascular and renal
diseases, but its role in Aldo-induced hypertension and renal damage is not
clear. In the current study, rats were treated with Aldo-salt combined with
TAK-242 (a TLR4 signaling antagonist) for 4 weeks. Hemodynamic, cardiac and renal
parameters were assayed at the indicated time. We found that Aldo-salt-treated
rats present cardiac and renal hypertrophy and dysfunction. Cardiac and renal
expression levels of TLR4 as well as levels of molecular markers attesting
inflammation and fibrosis are increased by Aldo infusion, whereas the treatment
of TAK-242 reverses these alterations. TAK-242 suppresses cardiac and renal
inflammatory cytokines levels (TNF-a, IL-1? and MCP-1). Furthermore, TAK-242
inhibits hypertension, cardiac and renal fibrosis, and also attenuates the
Aldo-induced Epithelial-Mesenchymal Transition (EMT). In experimental
hyperaldosteronism, upregulation of TLR4 is correlated with cardiac and renal
fibrosis and dysfunction, and a TLR4 signaling antagonist, TAK-242, can reverse
these alterations. TAK-242 may be a therapeutic option for salt-sensitive
hypertension and renal fibrosis.
|*Aldosterone
[MESH]
|Acute Kidney Injury/blood/chemically induced/physiopathology/*prevention &
control
[MESH]
|Animals
[MESH]
|Cytokines/blood
[MESH]
|Heart Diseases/blood/chemically induced/physiopathology/*prevention & control
[MESH]
|Hemodynamics/drug effects/physiology
[MESH]
|Inflammation/blood/chemically induced/physiopathology/prevention & control
[MESH]
|Male
[MESH]
|Protective Agents/*pharmacology/therapeutic use
[MESH]
|Rats
[MESH]
|Rats, Wistar
[MESH]
|Sulfonamides/*pharmacology/therapeutic use
[MESH]