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2017 ; 23
(ä): 242-250
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Resolvin D1 inhibits inflammatory response in STZ-induced diabetic retinopathy
rats: Possible involvement of NLRP3 inflammasome and NF-?B signaling pathway
#MMPMID28465656
Yin Y
; Chen F
; Wang W
; Wang H
; Zhang X
Mol Vis
2017[]; 23
(ä): 242-250
PMID28465656
show ga
PURPOSE: To investigate the effect of resolvin D1 (RvD1) on the Nod-like receptor
family pyrin domain-containing (NLRP3) inflammasome and the nuclear factor-kappa
beta (NF-?B) pathway in streptozotocin (STZ)-induced diabetic retinopathy in
rats. METHODS: Ninety-six male rats were divided into four groups: control, STZ,
RvD1, and vehicle. The rats with diabetic retinopathy induced by STZ in the RvD1
and vehicle groups were given an intravitreal injection of RvD1 (1,000 ng/kg) or
the same dosage of vehicle, respectively. All rats were euthanized 7 days
following treatment. Hematoxylin and eosin staining was used to observe the
pathological changes in the retinal tissues. The location and expression of the
NLRP3 inflammasome components, including NLRP3, caspase-associated recruitment
domain (ASC), and caspase-1, in the retinas were detected using
immunohistochemistry, real-time PCR, and western blot, respectively. Retinal
homogenate of rats were collected for the detection of the downstream molecules
interleukin 1 beta (IL-1?) and IL-18 of the NLRP3 inflammasome with enzyme-linked
immunosorbent assay kits. RESULTS: The levels of NLRP3, ASC, cleaved caspase-1,
IL-1?, and IL-18 were upregulated in the retinas of the STZ-induced diabetic
rats; however, these changes were partially inhibited by the RvD1 treatment.
Furthermore, the administration of RvD1 suppressed activation of NF-kB, which was
upregulated in STZ-induced diabetic retinopathy. CONCLUSIONS: RvD1 plays a
protective role in STZ-induced diabetic retinopathy by inhibiting the level of
activation of the NLRP3 inflammasome and associated cytokine production,
suggesting targeting of this pathway might be an effective strategy in treatment
of diabetic retinopathy.
|Animals
[MESH]
|Blotting, Western
[MESH]
|Caspase 1/metabolism
[MESH]
|Cytokines/metabolism
[MESH]
|Diabetes Mellitus, Experimental/metabolism/*prevention & control
[MESH]
|Diabetic Retinopathy/metabolism/*prevention & control
[MESH]