PMID- 25041990 OWN - NLM STAT- MEDLINE DCOM- 20160504 LR - 20151124 IS - 1097-6809 (Electronic) IS - 0741-5214 (Linking) VI - 62 IP - 6 DP - 2015 Dec TI - Attenuation of early atherosclerotic lesions by immunotolerance with beta2 glycoprotein I and the immunomodulatory effectors interleukin 2 and 10 in a murine model. PG - 1625-31 LID - S0741-5214(14)01122-7 [pii] LID - 10.1016/j.jvs.2014.05.096 [doi] AB - OBJECTIVE: This study assessed the effect of cellular and humoral autoimmune response inhibition after immunization with beta2-glycoprotein I (beta2-GPI) and the effect of immunomodulation with interleukin (IL)-2 and IL-10 in the development of early atherosclerotic vascular lesion in a murine model. Atherosclerosis is increasingly considered a chronic inflammatory disease with pathogenic autoimmune processes. Regulatory T cells, and their cytokines, have been implicated in the inhibition of the development of atherosclerotic lesions and involved in the immunologic tolerance induction. METHODS: Eight-week-old male C57BL6 LDL-receptor deficient (LDLR(-/-)) mice were fed a cholesterol-rich (2.8%), high-saturated-fat (82%) diet for a week and divided in five groups. The groups received the following intravenous immunizations: group I (control group): one dose of 5 mug beta2-GPI; group II: 5 mug beta2-GPI I and 1 mug IL-2; group III: 5 mug beta2-GPI and 0.75 mug of IL-10; and group IV: 5 mug beta2-GPI, 1 mug IL-2, and 0.75 mug IL-10. The aortas of the mice were assessed 8 weeks after inoculation to determine the aortic lesion size and composition in all groups. RESULTS: beta2-GPI immunization attenuated the early atherosclerotic lesions development compared with the control group (P = .001). Macroscopic and histologic aortic atherosclerotic lesions were significantly decreased in the IL-2 and IL-10-treated groups in beta2-GPI-tolerant mice compared with the beta2-GPI-tolerant group without cytokine injection (P = .001). The association of both cytokines did not provoke a major inhibition in the atherosclerosis development when compared with groups injected with the two cytokines separately. CONCLUSIONS: The immunotolerance induction against beta2-GPI attenuates the development of atherosclerosis lesions in an animal model, enhanced by downregulation of the cellular and humoral autoimmune response provoked by IL-2 and IL-10. CI - Copyright (c) 2015 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved. FAU - De Haro, Joaquin AU - De Haro J AD - Angiology and Vascular Surgery Department, Getafe University Hospital, Getafe, Madrid, Spain. Electronic address: deharojoaquin@yahoo.es. FAU - Esparza, Leticia AU - Esparza L AD - Angiology and Vascular Surgery Department, Getafe University Hospital, Getafe, Madrid, Spain. FAU - Bleda, Silvia AU - Bleda S AD - Angiology and Vascular Surgery Department, Getafe University Hospital, Getafe, Madrid, Spain. FAU - Varela, Cesar AU - Varela C AD - Angiology and Vascular Surgery Department, Getafe University Hospital, Getafe, Madrid, Spain. FAU - Sanchez, Carolina AU - Sanchez C AD - Biomedical Research Centre, Getafe University Hospital, Getafe, Madrid, Spain. FAU - Acin, Francisco AU - Acin F AD - Angiology and Vascular Surgery Department, Getafe University Hospital, Getafe, Madrid, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140717 PL - United States TA - J Vasc Surg JT - Journal of vascular surgery JID - 8407742 RN - 0 (Interleukin-2) RN - 0 (beta 2-Glycoprotein I) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Animals MH - Aortic Diseases/*immunology/*pathology/physiopathology MH - Atherosclerosis/*immunology/*pathology/physiopathology MH - Disease Models, Animal MH - Down-Regulation/immunology MH - Humans MH - Immune Tolerance/drug effects/*physiology MH - Immunity, Cellular MH - Immunomodulation/*drug effects/physiology MH - Interleukin-10/*pharmacology/physiology MH - Interleukin-2/*pharmacology/physiology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - beta 2-Glycoprotein I/*physiology EDAT- 2014/07/22 06:00 MHDA- 2016/05/05 06:00 CRDT- 2014/07/22 06:00 PHST- 2014/02/04 00:00 [received] PHST- 2014/05/24 00:00 [accepted] PHST- 2014/07/22 06:00 [entrez] PHST- 2014/07/22 06:00 [pubmed] PHST- 2016/05/05 06:00 [medline] AID - S0741-5214(14)01122-7 [pii] AID - 10.1016/j.jvs.2014.05.096 [doi] PST - ppublish SO - J Vasc Surg. 2015 Dec;62(6):1625-31. doi: 10.1016/j.jvs.2014.05.096. Epub 2014 Jul 17.