Vulnerable Plaque Pathophysiology, Detection, and Intervention. VP: A Local Problem or Systemic Disease. Erling Falk, Denmark
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1 Vulnerable Plaque Pathophysiology, Detection, and Intervention VP: A Local Problem or Systemic Disease Erling Falk, Denmark
2 Vulnerable Plaque Pathophysiology, Detection, and Intervention VP: A Local Problem in a Systemic Disease Erling Falk, Denmark
3 Vulnerable Plaque Pathophysiology, Detection, and Intervention VPs: Local Problems in a Systemic Disease? Erling Falk, Denmark
4 Am J Cardiol 1990;65:2F-6F. Review
5
6
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8 Atherosclerosis: chronic smoldering inflammation plaque composition Plaques causing >75% stenosis by histology Fibrosis 68% Necrosis 16% Infl: 8% Ca: 8% Roberts et al (Falk. JACC 2006;47:C7-12)
9 Seattle, March 18, 1999 N Engl J Med 1999 Jan;340:115-26
10 NEJM :
11 Non-coronary atherosclerosis CHD risk equivalent NCEP ATP III, 2002
12 Non-coronary atherosclerosis CHD risk equivalent NCEP ATP III, 2002
13
14 Acute coronary syndrome very high risk Circulation 2004;110:
15 Despite profound lipid lowering in ACS ¼ come back with a new event within 30 m PROVE IT TIMI 22: statin after stabilized ACS (standard) (intensive) Cannon et al. NEJM 2004:350:
16 Atherosclerosis systemic disease with focal manifestations VP Thrombosis Falk. JACC 2006;47:C7-12
17 Atherosclerosis systemic disease with focal manifestations VP Thrombosis VP/culprit One? Few? Many? Falk. JACC 2006;47:C7-12
18 Am J Cardiol 2006;98(suppl):3Q-9Q
19 Am J Cardiol 2006;98(suppl):3Q-9Q
20
21
22 Mauriello et al. JACC 2005;45:
23 Plaque rupture (14/16 thrombi = 87.5%) AMI <2 TCFA per patient 16 patients Mauriello et al. JACC 2005;45:
24 Plaque rupture (14/16 thrombi = 87.5%) AMI <2 TCFA per patient 16 patients Mauriello et al. JACC 2005;45:
25
26 <2 TCFA per patient
27 Despite profound lipid lowering in ACS ¼ come back with a new event within 30 m PROVE IT TIMI 22: statin after stabilized ACS (standard) (intensive) Cannon et al. NEJM 2004:350:
28 Plaque rupture in fatal CAD 2-3 per patient, including culprit Ruptured Plaques total +thrombus 47 patients patients Falk E. Br Heart J 1983;50: Frink RJ. J Inv Cardiol 1994;6:173-85
29 Plaque rupture in non-cardiac death, n=129 relatively rare (vs CAD) Atheroma-related disease Plaque Rupture no thrombus +thrombus 69 persons: no 6 ( 9%) 0 60 persons: + 10 (17%) 3 mural (5%) Davies MJ et al. Eur Heart J 1989;10:203-8
30 NEJM 1984;310:
31 115 thrombi in 74 patients 103 (90%) of these had plaque fissuring NEJM 1984;310:
32 Curr Opin Cardiol 2001;16:
33 Plaque rupture CAD ~1.3 TCFA per patient Kolodgie,, Virmani. Curr Opin Cardiol 2001;16:
34 Plaque rupture CAD ~1.3 TCFA per patient Kolodgie,, Virmani. Curr Opin Cardiol 2001;16:
35 Thin-cap fibroatheroma & rupture prox LAD: hot spot TCFA Plaque Rupture Healed Rupture Kolodgie,, Virmani. Curr Opin Cardiol 2001;16:
36 LAD
37 VP and ruptured plaques relatively infrequent limited, focal distribution AHA, Nov 2006; abstract 251
38 VP and ruptured plaques relatively infrequent limited, focal distribution 50 hearts (33 CVD) TCFA, Vulnerable Plaque n=23 (0.46 per heart) Ruptured plaques n=19 (0.38 per heart) AHA, Nov 2006; abstract 251
39 Targeting Vulnerable Plaque medical whack-a-mole? Thrombosis-prone plaques 1. Origin speed of development 2. How long does a VP persist? 3. Fate healing without thrombosis silent rupture/thrombosis acute ischemic event (ACS, stroke)
40 Targeting Vulnerable Plaque medical whack-a-mole? Thrombosis-prone plaques 1. Origin speed of development 2. How long does a VP persist? 3. Fate healing without thrombosis silent rupture/thrombosis acute ischemic event (ACS, stroke) Acne. NEJM 2005;352:
41 Plaque Rupture Coronary Thrombosis men ~80% women ~60% Plaque rupture
42 Thrombosis-prone = high-risk = vulnerable plaque Coronary Thrombosis plaque rupture men ~80% women ~60% Ruptured Fatal Coronary Thrombi Precipitated by Plaque Rupture Non-ruptured Total AMI + SCD 1,460 1,114 = 76% Worldwide Falk. JACC 2006;47:C7-12
43 Coronary Atherosclerosis ruptured vs intact plaque Ruptured Intact lumen
44 Coronary Atherosclerosis ruptured vs intact plaque Plaque size Ruptured Intact lumen
45 Circulation 1996;94:2662-6
46 Circulation 1996;94: ANGIOGRAPHY luminal narrowing (diameter reduction) IVUS/HISTOLOGY wall disease (plaque) B: Wall: 50% X-sectional Lumen: normal
47 Circulation 1996;94: ANGIOGRAPHY luminal narrowing (diameter reduction) IVUS/HISTOLOGY wall disease (plaque) B: Wall: 50% X-sectional Lumen: normal
48 core Coronary Atherosclerosis ruptured vs intact plaque Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Ruptured Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
49 % of plaque area Coronary Plaque Rupture necrotic core in intact (stenotic) vs ruptured plaques % Intact 32% Ruptured Fibrosis Necrotic Core Calcium Gertz SD, Roberts WC. Am J Cardiol 1990;66:
50 Heart 2004;90: Mean (SD) (stenotic)
51 Heart 2004;90: Mean (SD) (stenotic) Overlap: Necrotic core >10% of an average stable plaque
52 Ruptured core Coronary Atherosclerosis ruptured vs intact plaque Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 (95% <65 µm) * cap Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
53 Mean (SD) Heart 2004;90:
54 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages, ~26% of cap * (95% <65 µm) * cap Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
55 Ruptured acellular hypocellular 26% 26% Coronary Atherosclerosis ruptured vs intact plaque Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages, ~26% of cap * (95% <65 µm) * cap Ca core Intact fibrosis lumen *Kolodgie, Virmani et al. Heart 2004;90:
56 Mean ~ SD Lp-PLA 2 Kolodgie,, Virmani. Lp-associated PLA 2. ATVB 2006;26:2523-9
57 Heart 1996;76:312-6
58 Plaque inflammation: considerable overlap (dis)similar syndromes Considerable overlap between 1. Chr. stable angina, n=28 2. Unstable angina, n=18 3. Acute rest angina, n=12 van der Wal et al. Heart 1996;76:312-6
59 Mean ~ SD Lp-PLA 2 Kolodgie,, Virmani. Lp-associated PLA 2. ATVB 2006;26:2523-9
60 Mean ~ SD Lp-PLA 2 Kolodgie,, Virmani. Lp-associated PLA 2. ATVB 2006;26:2523-9
61 Mean ~ SD Lp-PLA 2 Kolodgie,, Virmani. Lp-associated PLA 2. ATVB 2006;26:2523-9
62 Mean ~ SD Lp-PLA 2 Kolodgie,, Virmani. Lp-associated PLA 2. ATVB 2006;26:2523-9
63 AHA Nov 2006
64 AHA Nov 2006 TCFA+RP relationship Plaque component predictor bivariate plaque size + + necrotic core size + + inflammation (macr) + - Conclusion: Plaque area and necrotic core determine the likelihood of plaque rupture
65 Plaque rupture: role of inflammation thrombus necrotic core
66 Plaque rupture: role of inflammation thrombus necrotic core
67 Plaque rupture: role of inflammation cap cap macrophages at rupture site (MMP, TF)
68 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) (95% <65 µm) * Intact lumen
69 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) % of plaque/cap 60 (95% <65 µm) * Aorta Intact lumen Core Cap Macr Cap SMC Stable Vulnerable Disrupted Davies et al. Br Heart J 1993;69:377-81
70 Mean (SD) Heart 2004;90:
71 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core thrombus cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus Fatal Coronary Thrombi Precipitated by Plaque Rupture (95% <65 µm) * Intact lumen Total AMI + SCD 1,460 1,114 = 76% Worldwide Falk. JACC 2006;47:C7-12
72 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core thrombus cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
73 No correlation! Circ 1996; 94:928-31
74 Coronary Remodeling & Plaque Vulnerability positive but weak correlation with lipid core and macr Varnava, Mills, Davies. Circ 2002;105:939-43
75 Coronary Remodeling & Plaque Vulnerability positive but weak correlation with lipid core and macr Varnava, Mills, Davies. Circ 2002;105:939-43
76
77 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core thrombus cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Angiogenesis intraplaque hemorrhage Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
78 plaque LAD lumen vasa vasorum vasa vasorum Barger et al. Panels C & D, with further filling: Rich capillary network confined to the plaque, = adventitia-derived neovascularization A B neo- vascularization Leaky exudation Fragile hemorrhage neo- vascularization Lower edge of plaque C D
79 NEJM 2003 Dec;349:
80 Human Pathol 1995;26:450-6
81 Human Pathol 2005;36;330-40
82 Coronary Atherosclerosis ruptured vs intact plaque Ruptured core thrombus cap Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Angiogenesis intraplaque hemorrhage Perivascular inflammation Intact lumen *Kolodgie, Virmani et al. Heart 2004;90:
83 Adventitial lymphocyte infiltration Lymphocytes Plaque (AHA Type V) HE Søren Dalager Adv. Media LAD, 50 F Died of AMI
84 AHA Nov 2006
85 Coronary Atherosclerosis ruptured vs intact plaque Ruptured Intact Ca core thrombus cap lumen Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Angiogenesis intraplaque hemorrhage Perivascular inflammation Calcification & spotty *Kolodgie, Virmani et al. Heart 2004;90:
86 Coronary Plaque Rupture calcification in intact (stenotic) vs ruptured plaques % of plaque area Intact 15% 5% Ruptured Fibrosis Necrotic Core Calcium Gertz SD, Roberts WC. Am J Cardiol 1990;66:
87
88 Coronary Atherosclerosis ruptured vs intact plaque Ruptured Intact Ca core thrombus cap lumen Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Angiogenesis intraplaque hemorrhage Perivascular inflammation Calcification & spotty *Kolodgie, Virmani et al. Heart 2004;90:
89 Coronary Atherosclerosis targets for imaging Ruptured Intact Ca core thrombus cap lumen Plaque size Necrotic core ~34% of plaque area * ~3.8 mm 2 & ~9 mm long * Fibrous cap thinkness,, ~23 µm (95% <65 macrophages,, ~26% of cap * smooth muscle cells (apoptosis) thrombus (95% <65 µm) * Expansive remodeling Angiogenesis intraplaque hemorrhage Perivascular inflammation Calcification & spotty *Kolodgie, Virmani et al. Heart 2004;90:
90 Madjid et al. ATVB 2004;24:
91 Circulation 2006;114:
92 TCFA = thin-cap fibroatheroma (the most frequent VP) Circulation 2006;114:
93 TCFA = thin-cap fibroatheroma (the most frequent VP) Circulation 2006;114:
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