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2017 ; 12
(7
): e0180642
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Synthetic PreImplantation Factor (PIF) prevents fetal loss by modulating LPS
induced inflammatory response
#MMPMID28704412
Di Simone N
; Di Nicuolo F
; Marana R
; Castellani R
; Ria F
; Veglia M
; Scambia G
; Surbek D
; Barnea E
; Mueller M
PLoS One
2017[]; 12
(7
): e0180642
PMID28704412
show ga
Maternal control of inflammation is essential during pregnancy and an exaggerated
response is one of the underlying causes of fetal loss. Inflammatory response is
mediated by multiple factors and Toll-like receptors (TLRs) are central.
Activation of TLRs results in NALP-3 mediated assembly of apoptosis-associated
speck-like protein containing a CARD (ASC) and caspase-1 into the inflammasome
and production of pro-inflammatory cytokines IL-1? and IL-18. Given that
preventing measures are lacking, we investigated PreImplantation Factor (PIF) as
therapeutic option as PIF modulates Inflammation in pregnancy. Additionally,
synthetic PIF (PIF analog) protects against multiple immune disorders. We used a
LPS induced murine model of fetal loss and synthetic PIF reduced this fetal loss
and increased the embryo weight significantly. We detected increased PIF
expression in the placentae after LPS insult. The LPS induced serum and placenta
cytokines were abolished by synthetic PIF treatment and importantly synthetic PIF
modulated key members of inflammasome complex NALP-3, ASC, and caspase-1 as well.
In conclusion our results indicate that synthetic PIF protects against LPS
induced fetal loss, likely through modulation of inflammatory response especially
the inflammasome complex. Given that synthetic PIF is currently tested in
autoimmune diseases of non-pregnant subjects (clinicaltrials.gov, NCT02239562),
therapeutic approach during pregnancy can be envisioned.
|Abortion, Spontaneous/*drug therapy/etiology/prevention & control
[MESH]
|Animals
[MESH]
|Anti-Inflammatory Agents/pharmacology/*therapeutic use
[MESH]