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Concentration of Anti-7-ketocholesterol Antibodies in Patient Sera After Heart Transplantation
- Source :
-
Transplantation Proceedings . Oct2009, Vol. 41 Issue 8, p3206-3208. 3p. - Publication Year :
- 2009
-
Abstract
- Abstract: Oxidized low-density lipoproteins (ox-LDL) have been shown to be strongly atherogenic and immunogenic in experimental animals and in humans. Autoantibodies against ox-LDL and its various epitopes have been detected in sera and in atherosclerotic lesions. LDL oxidation may also lead to generation of oxidized derivatives of cholesterol (eg, 7-ketocholesterol [7-ketoCh]), which are characterized by high levels of cytotoxicity, muta- and carcinogenicity, as well as immunosuppressive effects and probable immunogenic properties. The aim of this study was to quantify autoantibodies to 7-ketoCh in sera from patients after orthotopic heart transplantation (OHT). IgG antibodies were measured in sera from 81 patients after OHT and 73 healthy volunteers using and enzyme-linked immunosorbent assay (ELISA) method. For the antigen we used 7-ketoCh hemisuccinate conjugated to bovine serum albumin. Anti-7-ketoCh antibodies were detected in all examined sera. Their concentrations were significantly higher among OHT patients than the control group, namely, 109.0 ± 109.7 vs 53.5 ± 20.0 U/mL (P < .005). Also, we observed a direct relationship between antibody concentration and time after OHT. Our results showed that the low molecular product of LDL oxidation, 7-ketoCh, was immunogenic possibly playing a role in the progression of atherosclerosis among OHT patients. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00411345
- Volume :
- 41
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Transplantation Proceedings
- Publication Type :
- Academic Journal
- Accession number :
- 44827393
- Full Text :
- https://doi.org/10.1016/j.transproceed.2009.08.017