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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 PLoS+One
2015 ; 10
(4
): e0122904
Nephropedia Template TP
gab.com Text
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English Wikipedia
Apolipoprotein-A1 as a damage-associated molecular patterns protein in
osteoarthritis: ex vivo and in vitro pro-inflammatory properties
#MMPMID25849372
de Seny D
; Cobraiville G
; Charlier E
; Neuville S
; Lutteri L
; Le Goff C
; Malaise D
; Malaise O
; Chapelle JP
; Relic B
; Malaise MG
PLoS One
2015[]; 10
(4
): e0122904
PMID25849372
show ga
Osteoarthritis (OA) is associated with a local inflammatory process. Dyslipidemia
is known to be an underlying cause for the development of OA. Therefore, lipid
and inflammatory levels were quantified ex vivo in blood and synovial fluid of OA
patients (n=29) and compared to those of rheumatoid arthritis (RA) patients
(n=27) or healthy volunteers (HV) (n=35). The role of apolipoprotein A-I (ApoA1)
was investigated in vitro on inflammatory parameters using human joint cells
isolated from cartilage and synovial membrane obtained from OA patients after
joint replacement. Cells were stimulated with ApoA1 in the presence or not of
serum amyloid A (SAA) protein and/or lipoproteins (LDL and HDL) at physiological
concentration observed in OA synovial fluid. In our ex vivo study, ApoA1, LDL-C
and total cholesterol levels were strongly correlated to each other inside the OA
joint cavity whereas same levels were not or weakly correlated to their
corresponding serum levels. In OA synovial fluid, ApoA1 was not as strongly
correlated to HDL as observed in OA serum or in RA synovial fluid, suggesting a
dissociative level between ApoA1 and HDL in OA synovial fluid. In vitro, ApoA1
induced IL-6, MMP-1 and MMP-3 expression by primary chondrocytes and
fibroblast-like synoviocytes through TLR4 receptor. HDL and LDL attenuated joint
inflammatory response induced by ApoA1 and SAA in a ratio dependent manner. In
conclusion, a dysregulated lipidic profile in the synovial fluid of OA patients
was observed and was correlated with inflammatory parameters in the OA joint
cavity. Pro-inflammatory properties of ApoA1 were confirmed in vitro.