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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Neuroinflammation
2018 ; 15
(1
): 95
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Central blockade of NLRP3 reduces blood pressure via regulating inflammation
microenvironment and neurohormonal excitation in salt-induced prehypertensive
rats
#MMPMID29573749
Wang ML
; Kang YM
; Li XG
; Su Q
; Li HB
; Liu KL
; Fu LY
; Saahene RO
; Li Y
; Tan H
; Yu XJ
J Neuroinflammation
2018[Mar]; 15
(1
): 95
PMID29573749
show ga
BACKGROUND: Inflammation has been implicated in the development of cardiovascular
disease. We determined whether nod-like receptor with pyrin domain containing 3
(NLRP3) involved in the process of prehypertension, central blockade of NLRP3
decreased inflammation reaction, regulated neurohormonal excitation, and delayed
the progression of prehypertension. METHODS: Prehypertensive rats were induced by
8% salt diet. The rats on high-salt diet for 1 month were administered a specific
NLRP3 blocker in the hypothalamic paraventricular nucleus (PVN) for 4 weeks.
ELISA, western blotting, immunohistochemistry, and flow cytometry were used to
measure NLRP3 cascade proteins, pro-inflammation cytokines (PICs), chemokine
ligand 2 (CCL2), C-X-C chemokine receptor type 3 (CXCR3), vascular cell adhesion
molecule 1 (VCAM-1), neurotransmitters, and leukocytes count detection,
respectively. RESULTS: NLRP3 expression in PVN was increased significantly in
prehypertensive rats, accompanied by increased number of microglia, CD4(+),
CD8(+) T cell, and CD8(+) microglia. Expressions of PICs, CCL2, CXCR3, and VCAM-1
significantly increased. The balance between 67-kDa isoform of glutamate
decarboxylase (GAD67) and tyrosine hydroxylase (TH) was damaged. Plasma
norepinephrine (NE) in prehypertensive rats was increased and gamma-aminobutyric
acid (GABA) was reduced. NLRP3 blockade significantly decreased blood pressure,
reduced PICs, CCL2, VCAM-1 expression in PVN, and restored neurotransmitters.
Blood pressure and inflammatory markers were upregulated after termination of
central blockage NLRP3. CONCLUSIONS: Salt-induced prehypertension is partly due
to the role of NLRP3 in PVN. Blockade of brain NLRP3 attenuates prehypertensive
response, possibly via downregulating the cascade reaction triggered by
inflammation and restoring the balance of neurotransmitters.
|Animals
[MESH]
|Antihypertensive Agents/pharmacology/therapeutic use
[MESH]