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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 Cell+Death+Dis
2018 ; 9
(3
): 351
Nephropedia Template TP
Tang TT
; Lv LL
; Pan MM
; Wen Y
; Wang B
; Li ZL
; Wu M
; Wang FM
; Crowley SD
; Liu BC
Cell Death Dis
2018[Mar]; 9
(3
): 351
PMID29500339
show ga
Inflammation is a major contributor to the pathogenesis of ischemic acute kidney
injury (AKI), which complicates the post-operative outcomes of large numbers of
hospitalized surgical patients. Hydroxychloroquine (HCQ), a well-known
anti-malarial drug, is commonly used in clinical practice for its
anti-inflammatory actions. However, little is known about its role in renal
ischemia/reperfusion (I/R) injury. In the current study, mice were subjected to
I/R injury and HCQ was administered for seven days by gavage prior to surgery. In
parallel, HK-2 human renal proximal tubule cells were prophylactically treated
with HCQ and then were exposed to hypoxia/reoxygenation (H/R). The results showed
that HCQ significantly attenuated renal dysfunction evidenced by blunted
decreases in serum creatinine and kidney injury molecular-1 expression and the
improvement of HK-2 cell viability. Additionally, HCQ markedly reduced macrophage
and neutrophil infiltration, pro-inflammatory cytokine production, and NLRP3
inflammasome activation. Mechanistic studies showed that HCQ could inhibit the
priming of the NLRP3 inflammasome by down-regulating I/R or H/R-induced NF-?B
signaling. Moreover, HCQ reduced cathepsin (CTS) B, CTSD and CTSL activity, and
their redistribution from lysosomes to cytoplasm. CTSB and CTSL (not CTSD) were
implicated in I/R triggered NLRP3 inflammasome activation. Notably, we found that
HCQ attenuated renal injury through downregulation of CTSB and CTSL-mediated
NLRP3 inflammasome activation. This study provides new insights into the
anti-inflammatory effect of HCQ in the treatment of AKI.
|Acute Kidney Injury/*drug therapy
[MESH]
|Animals
[MESH]
|Anti-Inflammatory Agents/metabolism/*therapeutic use
[MESH]
|Cathepsin B/*metabolism
[MESH]
|Cathepsin L/*metabolism
[MESH]
|Cell Line
[MESH]
|Cell Survival/drug effects
[MESH]
|Creatinine/blood
[MESH]
|Disease Models, Animal
[MESH]
|Hepatitis A Virus Cellular Receptor 1/blood
[MESH]
|Humans
[MESH]
|Hydroxychloroquine/metabolism/*therapeutic use
[MESH]