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2017 ; 8
(9
): 14283-14293
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English Wikipedia
Melatonin attenuates angiotensin II-induced abdominal aortic aneurysm through the
down-regulation of matrix metalloproteinases
#MMPMID28179581
Kong J
; Zhang Y
; Liu S
; Li H
; Liu S
; Wang J
; Qin X
; Jiang X
; Yang J
; Zhang C
; Zhang W
Oncotarget
2017[Feb]; 8
(9
): 14283-14293
PMID28179581
show ga
Abdominal aortic aneurysm (AAA) affects more than 5% of the population in
developed countries and the pharmacotherapies for AAA are limited. Here, we
explored whether melatonin regulates the development of AAA. In smooth muscle
cells, melatonin treatment decreases angiotensin II-induced matrix
metalloproteinase 2 (MMP2) and MMP9 expression. Human antigen R (HuR) could bind
with the adenylateuridylate-rich elements of MMP2 and MMP9 mRNAs 3' untranslated
region, resulting in the increased stability of MMP2 and MMP9 mRNAs. HuR is
required for angiotensin II-induced MMP2 and MMP9 expression. Moreover, melatonin
suppresses angiotensin II-induced HuR expression through inhibiting NF-?B
signaling, leading to decreased MMP2 and MMP9 levels. Finally, melatonin
attenuates the development of AAA in ApoE-/- mice infused with angiotensin II in
vivo. These data support a role of HuR in the development of AAA and possible
therapeutic roles for melatonin and/or HuR inhibition in AAA.