dAthrosclrose Ziad Mallat, MD, PhD Department of Medicine, - - PowerPoint PPT Presentation
dAthrosclrose Ziad Mallat, MD, PhD Department of Medicine, - - PowerPoint PPT Presentation
Biologie de la Plaque dAthrosclrose Ziad Mallat, MD, PhD Department of Medicine, University of Cambridge, Cambridge, UK Inserm Atherosclerosis Kolodgie, et al. Heart 2004 Risk factors: ApoB/apoA1 ratio, diabetes, abdominal obesity,
Kolodgie, et al. Heart 2004
Atherosclerosis
Risk factors: ApoB/apoA1 ratio, diabetes, abdominal obesity, smoking, hypertension, psychosocial index, fruits/veg., exercise, alcohol
Hanson GK. N Engl J Med 2005
Effect of Subendothelial Retention of Atherogenic Lipoproteins on Atherosclerosis
Skalen et al. Nature, 2002;417:750-754.
Proteoglycan- binding-defective LDL Wild type- control LDL
Cohen JC et al. Cell Metab 2014
Napoli et al. JCI, 1997, 100:2680-2690.
Percent of Atherogenic Sites
Composition of Atherogenic Sites in Fetal Aortas
Charo I, NEJM 2006
Bornfeldt KE et al. Cell Metab 2011
Bornfeldt KE et al. Cell Metab 2011
Weber C et al. Nat Med 2011
Moore KJ & Tabas I. Cell 2011
Debris of dead cells (thrombogenic)
Mallat et al. 1999, 2000
Bornfeldt KE et al. Cell Metab 2011
Hanson GK. N Engl J Med 2005
Mallat et al. 1999, 2001 IL-10 and TGF-β
Ait-Oufella et al. 2006 nTreg and TGF-β
Mallat et al. 2003 Tr1 cells: IL-10
Herbin et al. 2012
ApoB100-Tregs
Pro-atherogenic Th1 vs atheroprotective Tregs
Clement et al., 2018
Flego D et al.
Klatzmann D & Abbas K, 2015
Maintenance of tolerance
Th1 Th2 Treg Treg Mac. IL10 TGFb IFNg Treg Th2 Th1 IL10 TGFb
Stable atherosclerotic plaque Lymph node Regulation of inflammation
EC
Pathogenic immunity
- xLDL,
HSP… IFNg TLRs, IL12/IL18… IL10 TGFb IL4 IL12
Unstable atherosclerotic plaque Pathogenic Immunity
Treg Teff
Apoptotic debris Clearance
Thrombus Protective Immunity
Treg Teff
Low-dose IL2 Restablishing Healthy Balance
Low-dose IL-2 to limit plaque inflammation
2010 Ait-Oufella et al.
2013 Rituximab
No CD20 mAb
Large infarction Heart failure
CD20 mAb
Small infarction No heart failure
Low Wang CC et al. Circulation 2016
University of Cambridge British Heart Foundation Xuan LI Andy SAGE Marc CLEMENT Inserm U970 Paris, France Hafid AIT-OUFELLA JS SILVESTRE Alain TEDGUI CeMM, Medical University
- f Vienna, Austria
- CJ. BINDER
Duke University, USA Thomas F. TEDDER
Gallego-Colon E et al. Atherosclerosis 2018
Winkels H et al, Circ Res 2018
Gallego-Colon E et al. Atherosclerosis 2018
microRNA-33 Regulates Macrophage Autophagy in Atherosclerosis, Volume: 37, Issue: 6, Pages: 1058-1067, DOI: (10.1161/ATVBAHA.116.308916)
How Common Is Residual Cholesterol/Inflammatory Risk?