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PTX3, Anti-PTX3, and Anti-C1q Autoantibodies in Lupus Glomerulonephritis.
- Source :
-
Clinical reviews in allergy & immunology [Clin Rev Allergy Immunol] 2015 Oct; Vol. 49 (2), pp. 217-26. - Publication Year :
- 2015
-
Abstract
- Pentraxin 3 (PTX3) is an acute-phase protein involved in C1q clearance. The presence of anti-C1q and the absence of anti-PTX3 antibodies were associated with lupus glomerulonephritis (LGLN). Our aim was to assess soluble and kidney-expressed PTX3 and their relationships with anti-C1q and anti-PTX3 antibodies in LGLN. Serum PTX3, anti-C1q, anti-dsDNA, and anti-PTX3 antibodies were tested in 130 systemic lupus erythematosus (SLE) patients, 130 healthy and 127 disease controls. Twenty-nine renal biopsies from SLE patients were analyzed and PTX3 immunostaining was quantified by morphometric analysis. Parametric and nonparametric statistics were performed. PTX3 serum levels were lower in SLE versus controls, but they were correlated with proteinuria in LGLN patients (p = 0.001). LGLN patients had higher anti-C1q and lower anti-PTX3 antibody levels than those without (p < 0.0001). LGLN was more prevalent in anti-C1q(+)/anti-PTX3(-) than in anti-C1q(+)/anti-PTX3(+) patients (p < 0.001). No LGLN was observed in anti-C1q(-)/anti-PTX3(+) patients. PTX3 was expressed in glomeruli and renal interstitium. Renal PTX3 was correlated with proteinuria (p = 0.024) and interstitial fibrosis (p = 0.023). PTX3 staining and fibrosis were higher in anti-PTX3(-) than anti-PTX3(+) patients. In conclusion, PTX3 is expressed in glomeruli of LGLN patients, primarily in anti-PTX3(-) patients, where it is correlated with renal fibrosis. Anti-C1q/anti-PTX3 antibody profile seems to be useful in LGLN assessment.
- Subjects :
- Adolescent
Adult
Autoantigens immunology
C-Reactive Protein immunology
Complement C1q immunology
DNA immunology
Female
Fibrosis
Humans
Kidney immunology
Kidney pathology
Lupus Nephritis diagnosis
Male
Middle Aged
Proteinuria diagnosis
Serum Amyloid P-Component immunology
Young Adult
Acute-Phase Reaction metabolism
Autoantibodies metabolism
Biomarkers metabolism
C-Reactive Protein metabolism
Kidney metabolism
Lupus Nephritis immunology
Proteinuria immunology
Serum Amyloid P-Component metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1559-0267
- Volume :
- 49
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Clinical reviews in allergy & immunology
- Publication Type :
- Academic Journal
- Accession number :
- 25805362
- Full Text :
- https://doi.org/10.1007/s12016-015-8476-9