dAthrosclrose Ziad Mallat, MD, PhD Department of Medicine, - - PowerPoint PPT Presentation

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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,


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Ziad Mallat, MD, PhD

Inserm

Department of Medicine, University of Cambridge, Cambridge, UK

Biologie de la Plaque d’Athérosclérose

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Kolodgie, et al. Heart 2004

Atherosclerosis

Risk factors: ApoB/apoA1 ratio, diabetes, abdominal obesity, smoking, hypertension, psychosocial index, fruits/veg., exercise, alcohol

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Hanson GK. N Engl J Med 2005

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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

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Cohen JC et al. Cell Metab 2014

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Napoli et al. JCI, 1997, 100:2680-2690.

Percent of Atherogenic Sites

Composition of Atherogenic Sites in Fetal Aortas

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Charo I, NEJM 2006

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Bornfeldt KE et al. Cell Metab 2011

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Bornfeldt KE et al. Cell Metab 2011

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Weber C et al. Nat Med 2011

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Moore KJ & Tabas I. Cell 2011

Debris of dead cells (thrombogenic)

Mallat et al. 1999, 2000

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Bornfeldt KE et al. Cell Metab 2011

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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

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Flego D et al.

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Klatzmann D & Abbas K, 2015

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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

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2010 Ait-Oufella et al.

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2013 Rituximab

No CD20 mAb

Large infarction Heart failure

CD20 mAb

Small infarction No heart failure

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Low Wang CC et al. Circulation 2016

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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

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Gallego-Colon E et al. Atherosclerosis 2018

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Winkels H et al, Circ Res 2018

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Gallego-Colon E et al. Atherosclerosis 2018

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microRNA-33 Regulates Macrophage Autophagy in Atherosclerosis, Volume: 37, Issue: 6, Pages: 1058-1067, DOI: (10.1161/ATVBAHA.116.308916)

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How Common Is Residual Cholesterol/Inflammatory Risk?

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