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2016 ; 11
(4
): e0153434
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Post-Natal Inhibition of NF-?B Activation Prevents Renal Damage Caused by
Prenatal LPS Exposure
#MMPMID27073902
Guo W
; Guan X
; Pan X
; Sun X
; Wang F
; Ji Y
; Huang P
; Deng Y
; Zhang Q
; Han Q
; Yi P
; Namaka M
; Liu Y
; Deng Y
; Li X
PLoS One
2016[]; 11
(4
): e0153434
PMID27073902
show ga
Prenatal exposure to an inflammatory stimulus has been shown to cause renal
damage in offspring. Our present study explored the role of intra-renal NF-?B
activation in the development of progressive renal fibrosis in offspring that
underwent prenatal exposure to an inflammatory stimulus. Time-dated pregnant rats
were treated with saline (control group) or 0.79 mg/kg lipopolysaccharide (LPS)
through intra-peritoneal injection on gestational day 8, 10 and 12. At the age of
7 weeks, offspring from control or LPS group were treated with either tap water
(Con+Ve or LPS+Ve group) or pyrollidine dithiocarbamate (PDTC, 120 mg/L), a NF-?B
inhibitor, via drinking water starting (Con+PDTC or LPS+PDTC group),
respectively, till the age of 20 or 68 weeks. The gross structure of kidney was
assessed by hematoxylin-eosin, periodic acid-Schiff staining and Sirius red
staining. The expression levels of TNF-?, IL-6, ?-smooth muscle actin (?-SMA) and
renin-angiotensin system (RAS) genes were determined by real time polymerase
chain reaction and/or immunohistochemical staining. Our data showed that
post-natal persistent PDTC administration efficiently repressed intra-renal NF-?B
activation, TNF-? and IL-6 expression. Post-natal PDTC also prevented intra-renal
glycogen deposition and collagenous fiber generation as evident by the reduced
expression of collagen III and interstitial ?-SMA in offspring of prenatal LPS
exposure. Furthermore, post-natal PDTC administration reversed the intra-renal
renin-angiotensin system (RAS) over-activity in offspring of prenatal LPS
exposure. In conclusion, prenatal inflammatory exposure results in offspring's
intra-renal NF-?B activation along with inflammation which cross-talked with
excessive RAS activation that caused exacerbation of renal fibrosis and
dysfunction in the offspring. Thus, early life prevention of NF-?B activation may
be a potential preventive strategy for chronic renal inflammation and progressive
renal damage.
|*Lipopolysaccharides
[MESH]
|Animals
[MESH]
|Female
[MESH]
|Fibrosis/chemically induced/metabolism/pathology/*prevention & control
[MESH]