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Table 1 The Role of various natural products and the derivatives in atherosclerosis through Inhibiting IKKβ-mediated Inflammation

From: Anti-inflammatory therapy of atherosclerosis: focusing on IKKβ

Classification/Name

major ingredient

Drug Class

Drug Source

Effective Dose of Drug

Animal/Cell Model Induction

Effect

Target

Pathway

Ref

Natural products-based derivatives

 Vinpocetine

Vinpocetine

Vincamine alkaloid

Vinca minor

5 mg/kg (i.p.)

high cholesterol diet (16.6% fat, 10.6% sucrose and 1.3% cholesterol) for 12 weeks + apoE−/− mice-induced atherosclerosis model

anti-inflammatory, anti-oxidant stress, inhibit monocyte adhesion to ECs

TNF-α, IL-6, MCP-1, MCP-1, MMP-2, MMP-9

p-Akt, p-IKKα, p-IKKβ, p-IκBα ↓

Akt/NF-κB

[80]

30, 50 µM

20 μg/ml ox-LDL + PMA-induced macrophages for 12 h

20 μg/ml ox-LDL + (HUVECs + THP-1 cells) to induce monocyte-endothelial cell adhesion

 Metformin

guanidine

hypoglycemic agents

Galega officinalis

200 mg/kg/day (p.o.)

atherogenic diet (0.8% cholesterol and 3% soybean oil) for 10 weeks + new zealand white rabbits to induce atherosclerosis model

anti-inflammatory, inhibit monocyte adhesion to ECs

MCP-1, CRP, TNF-α, IL-6, IL-4, IL-10, IL-8, IL-1, VCAM-1, ICAM-1, LOX-1 ↓

p65 ↓, IκBα ↑

-

[86]

100, 200, 300 µM/ml

10 ng/ml TNF-α + rabbit endothelial cells + rabbit monocytes

100, 500,1000 µM

10 ng/ml TNF-α + HUVECs-induced inflammation

anti-inflammatory

IL-6 ↓

P-IKKα/β↓, IκBα, P-AMPK, αAMPK ↑

PI3K/AMPK/IKKα/β

[88]

10−3 mol/L

(10−4 mmol/L Insulin + 30 mM glucose + 1 µM dexamethasone) + HUVECs-induced Insulin resistance of endothelial cells model

enhance endothelial function

NO, eNOS, ET-1 ↑

-

-

[84]

 Naringin

Naringin

flavonoid

grape, citrus species, fractus aurantii

50, 100, 200 μg/ml

10 ng/ml TNF-α stuimilated-HUVECs + THP-1- induced inflammation and monocyte adhesion

anti-inflammatory, inhibit monocyte adhesion to ECs

ICAM-1,VCAM-1, MCP-1, E-selectin, RANTES↓

p-p65, p-IκBα, p-IKKα/β ↓, IκBα ↑

IKK/NF-κB

[92]

 Emodin

Emodin

anthraquonoid compound

dried root of Rhei Rizoma

10 µM

100 ng/ml Light + monocyte-like cell line (THP-1) to induce monocytes migration

anti-inflammatory, inhibit migration

CCR1, CCR2, ICAM-1, IL-8, MCP-1, TNF-α, IL-6 ↓

p38, p-p38, p-IκBα

p38/NF-κB

[94]

10 µM

10 ng/ml TNF-α inducing rat aortic VSMCs migration

anti-inflammatory

MMP-2, MMP-9, MCP-1, IL-1β, IL-6, ICAM-1, VCAM-1↓

-

NF-κB pathway

[95]

 Green tea polyphenols

Epigallocatechin gallate

polyphenols

green tea

0.1, 0.2, 0.4 mg/ml

50 mg/ml ox-LDL + HUVECs-induced inflammation model

anti-inflammatory, improve endothelial dysfunction

TNF-α↓

p65↓

IKK/NF-κB

[99]

 Stybenpropol A

Stybenpropol A

phenylpropane derivative

Benzoinum

50, 200 μmol/ L

12.5 ng/ml TNF-α + HUVECs-induced inflammation

anti-inflammatory, anti-apoptotic

sVCAM-1, sICAM-1, IL-1β, IL-8, Caspase-9, Bax↓, Bcl-2 ↑

IKKβ, IκBα ↑

IKK/NF-κB

[100]

 Methyl-β-cyclodextrin

Methyl-β-cyclodextrin

cyclic oligosaccharide

starch hydrolysis enzymatic

5 nM

(1 μg/ml LPS / 50 μg/ml ox-LDL) + (HUVECs + THP-1)-induced monocyte-endothelial adhesion

inhibit monocyte adhesion to ECs

ICAM-1, VCAM-1↓

p-p65, p65, IKK, Akt↓, IκB, p-Akt↑

LPS/IKK/NF-κB, oxLDL/Akt/NF-κB

[51]

Natural extracts

 Tanshinone IIA

Tanshinone IIA

Diterpene

Salvia miltiorrhiza bunge

90, 30 10 mg/kg/day (p.o.)

high-fat diet (fat: 21% (wt/wt), cholesterol: 0.15% (wt/wt)) for 13 weeks + ApoE−/− mice-induced atherosclerosis model

anti-inflammatory

MC-1, TNF-α ↓

TLR4, MyD88, NF-κB ↓

TLR4/MyD88/NF-κB

[104]

5, 10, 20 µg/ml

10 ng/ml TNF-α + (HUVECs + THP-1)-induced inflammation

anti-inflammatory

ICAM-1,VCAM-1, TNF-α, E-selectin ↓

IKKα/β, p-IKKα/β, p65, p-IκBα, p-p65↓, IκBα↑

IKK/NF-κB

[105]

 Quercetin

Quercetin

Flavonoid subclass

fruits and vegetables

0.1%, w/w in diet

human CRP transgenic mice + IL-1β 100 L/mouse (i.p.); ApoE*3 leiden transgenic mice + high cholesterol diet (15% (w/w) cacao butter, 1% (w/w) palm oil, 40.5% sucrose, 20% acid casein, 10% corn starch and 6.2% cellulose, supplemented with or without 1% cholesterol (all w/w) for 15 weeeks-induced AS model

anti-inflammatory, anti-proliferation

CRP, SAA, E-selectin, VCAM-1 ↓

p65

-

[109]

10, 30 µmol/L

0.2 mmol/L H2O2/10 U/ml TNF-α/IL-1β 5 ng/ml- stimulated HUVECs/human HuH7 hepatoma cells

 Myricetin

myricetin

flavonoid

fruits, vegetables, medicinal herbs

-

TNF-α + ECV304 cells-induced inflammation

inhibit monocyte adhesion to ECs

-

IKK, p65, IκB ↓

IKK/NF-κB/IκB

[115]

10 µgl/ml

10 ng/ ml LPS + dendritic cells-induced cells inflammation model

anti-inflammatory

TNF-α, IL-6, IL-12p70 ↓

P65, p-IKKα/β, p-IκBα ↓, IκBα ↑

IKK/NF-κB

[178]

 Clematichinenoside

Clematichinenoside

triterpene saponin

Clematis chinensis osbeck root

1, 3, 10 µM

10 ng/ml TNF-α + HUVECs-induced inflammation

anti-oxidant stress, suppress monocyte- HUVECs adhesion

ICAM-1,VCAM-1, ROS, O2(∙-), H2O2, NOX4, p47↓

p-IκBα, IKKβ, p65↓, IκBα ↑

IKK/NF-κB

[118]

 Andrographolide

Andrographolide

diterpene lactone

leaves

10 μM

1 ng/ml TNF-α + EA.hy926 cells -induced inflammation

anti-inflammatory

ICAM-1 ↓

p-IKKβ/IKKβ, p-IκBα, p-IKKα/IKKα, p65↓, IκBα ↑

IKK/NF-κB

[179]

 Avenanthramide-c

CH3-Avenanthramide-c

polyphenol

Avena sativa

50, 100 μM

100 ng/ml TNF-α + human aortic SMCs to induce proliferation and migration

anti-inflammatory, anti-proliferation

MMP-2, MMP-9, TNF-α, IL-1β, IL-6 ↓

p65, p-IκB, p-ERK1/2, p-JNK, p-p38↓, IκB ↑

MAPK/NF- κB

[123]

20, 40, 100 μM

5 ng/ml hrIL-1β + HAECs / 20 ng/ml TNF-α + HUVECs-induced inflammation

anti-inflammatory

IL-6, IL-8, MCP-1↓

p65, p-IKKα, p-IKKβ, p-IκB↓, IκBα↑

IKK/NF-κB

[124]

 Digitoxin

digitoxin

steroid glycoside

Digitalis

3, 10, 30 nmol/l

10 ng/ml IL-1β + HUVECs-induced inflammation

anti-inflammatory

MCP-1, Caspase-3, eNOS↓

p65, p-TAK1, p-IKK, p-IκBα ↓, IκBα↑

TAK-1/IKK/NF-κB

[126]

 Kansuinine A

Kansuinine A

Terpenoid

Euphorbia kansui L

20, 60 μg/ kg (i.p.)

A high fat-diet + ApoE−/− mice + -induced atherosclerosis model

anti-oxidant stress, anti-apoptotic, anti-inflammatory

ROS, GPx, MDA, Bax, Bcl-2, CC3 ↓

p-p65, p65, p-IKKβ, IKKβ, p-IκBα↓, IκBα ↑

IKKβ/IκBα/NF-κB

[128]

0.1, 0.3, 1.0 μM

200 μM H2O2 + HAECs-induced endothelial injury

 Honokiol

Honokiol

pleiotropic lignan

Magnolia grandiflora

10 μM

0.5 mM Palmitic acid (PA) + HUVECs-induced endothelial cell injury model

anti-inflammatory

IL-6, IL-8, MCP-1, NO, iNOS, eNOS ↓

p-IKKβ, p-IκB, p50, p65↓

IKK/IκB/NF-κB

[131]

 Longxuetongluo capsule

Dragon's Blood

totaenolic extract

Croton, Dracaen, Daemonorops, Pterocarpus

100, 200, and 300 mg/kg/d (p.o.)

A high-fat diet (0.2% cholesterol,15% fat added) for 7 weeks + ApoE−/− mice-induced atherosclerosis model

anti-inflammatory, inhibit the adhesion of monocytes to HUVECs

eNOS ↑, VCAM-1, MCP-1, COX-2 ↓

p-ErK/ErK, p-IKKα/β, p-IκBα, IKKβ, IKKα, p-p38/p38↓, IκBα ↑

p38/IKK/IκB/NF-κB

[180]

20, 40 µg/ml

20 µg/ml ox-LDL + (HUVECs + THP-1)-induced inflammation

 Pulvones A/C

pulvones A/C

isoflavonoids

Millettia pulchra

3, 10 µM

1 µg/ml LPS + RAW264.7 macrophage cells to induce inflammation

anti-inflammatory

iNOS, COX-2, IL-6, IL-1β↓

p65, IKK, p-IκBα↓, IκBα↑

IKKβ/NF-κB

[133]

 Acetyl-11-Keto-β-Boswellic Acid

Acetyl-11-Keto-β-Boswellic Acid

γ-cyclodextrin complex

oleogum resin

100 mol/kg (i.p.)

50 μg LPS-injected apoE−/− mices-induced atherosclerotic model

Anti-inflammatory

anti-atherogenic

MCP-1, MCP-3, IL-1α, MIP-2, VEGF, TF ↓

IKK, p-IκBα, p65↓, IκBα↑

NF-κB signaling

[135]

10 μmol/L

100 ng/ml LPS + human macrophages / mouse mononuclear and macrophages-induced inflammation model

 Ginsenoside Re

Ginsenoside Re

-

Ginseng

10 µM

50 ng/ml LPS + peritoneal macrophages to induce inflammation model

anti-inflammatory

IL-1β, TNF-α, COX-2, iNOS, IRAK-4, IRAK-1↓

p-IKKβ, p65, p-p65, TLR4, MyD88 ↓, IκBα ↑

-

[137]

 Corosolic acid

Corosolic acid

Pentacyclic triterpenoid

-

50 μM

1 μg/ml LPS + RAW 264.7 macrophage cells -induced inflammation model

anti-inflammatory

IFN-γ ↓

Akt, NF-κB, c-JUN, IKKα, p-IKKα, p-IKKβ ↓

Akt/IKK/NF-κB

[139]

 Ursolic acid

Ursolic acid

100 μM

 Pipernigramides

compounds 42/43/44

amide alkaloids

Piper nigrum L

2, 4, 8 μM

1 μg/ml LPS + RAW 264.7 macrophage cells -induced inflammation model

anti-inflammatory

IL-1β, IL-6, TNF-α, PGE2, iNOS, COX-1, COX-2 ↓

IKKα/β, P-IKKα/β, p-IκBα, p65, p-p65 ↓, IκBα ↑

NF-κB signaling

[141]

Synthetic drugs

 Sulforaphane

Sulforaphane

isothiocyanate

Isothiocyanate, broccoli

0.25 mg/kg/day (p.o.)

A high cholesterol die (1% cholesterol-enriched chow) for 4 weeks + new zealand white rabbits to induce atherosclerosis model

anti-oxidant stress

MDA, SOD ↓, GSH ↑

p65

-

[143]

2.5, 5 μM

5 ng/ml TNF-α + Human endothelial cells ECV-304-induced inflammation

anti-inflammatory

IL-1β, IL-6, IL-8, ICAM-1, VCAM-1, E-select ↓

p65, p-IκBα, p-IKKβ, IKKβ, p-RhoA, RhoA, p-ROCK, ROCK↓, IκBα↓

RhoA/ROCK/NF-κB

[146]

10 μmol/L

4 ng/mL TNF-α + HUVECs to induce inflammation model

anti-inflammatory

EL ↓

p50, p65, p-IKK1/IKK1, p-IKK2/IKK2, p-IκB/IκB↓, IκBα ↑

NF-κB/EL

[91]

 Vitamin C

Vitamin C

Vitamin

 

10, 20, 40 mM

10 ng/ml IL-1/100 ng/ml PMA / 0.2 mM H2O2 / 10 ng/ml TNF / 200 U/ml IFN-γ + ECV304 / HUVECs-induced inflammation model

anti-inflammatory anti-oxidant stress

IL-8 ↓

p65, p-IκBα, IKKα, IKKβ ↓, IκBα ↑

-

[149]

 Zinc

Zinc

-

-

1, 15 μM

10 μg/ml LPS + HUVECs-induced inflammation model

anti-inflammatory

TNF-α, IL-1β, MCP-1, NO, VCAM-1 ↓

IKKα, p65↓

IKKα/NF-κB

[152]

 1-Deoxynojirimycin

1-Deoxynojirimycin

Polyhydroxy alkaloid

Mulberry Leaves

10 mg/d (p.o.)

A total of 144 patients with stable angina pectoris and blood stasis syndrome

anti-oxidant

anti-inflammatory

hs-CRP, IL-6, TNF-α, SOD, MDA ↓

IKK, p65↓, IκBα ↑

-

[153]

 Ebselen

2-phenyl-1,2-benzisoselenazol-3[2H]-one]

organoselen-ium compound

Synthetic compound

20 mg/kg/d

C57Bl/J6 apoE−/− mice + streptozotocin-induced diabetic apoE−/− mouse model

anti-atherosclerosis

VEGF, RAGE, NOX2, SOD-1, GPx1, catalase, TNF-α ↓

p-IKK, p-JNK↓

-

[42]

0.03 μmol/L

100 μmol/L H2O2 + HAECs-induced inflammation model

 Polyethylene glycol-superoxide dismutase

-

superoxide anion scavenger

-

300 U/mL

100 μmol/L homocysteine + HUVECs / HAECs to induce endothelial injury

anti-oxidant stress, anti-inflammatory

SOD ↓

p-IκBα, IKKα, IKKβ, p65↓, IκBα ↑

-

[156]

 Prostaglandin A1

-

 

-

30 μmol/L

 FABP 4/5 inhibitors

Compound A16/B8

FABP 4/5 inhibitor

-

30, 60 µM

100 ng/ml LPS + RAW 264.7 macrophage cells -induced inflammation model

anti-inflammatory

MCP-1, TNF-α, IL-6, COX-2↓

IKK, p-IKK, p65, p-p65 ↓

IKK/NF-κB

[181]

 BAY11-7082 analogs

8-tosylamino quinoline

IKK inhibitor

-

20 μmol/L

1 μg/ml LPS + RAW264.7 macrophage cells and peritoneal macrophages-induced inflammation model

anti-inflammatory

NO, PGE2, TNF-α, IL-12p40, iNOS, COX-2 ↓

p65, IKK, p-IKK, Akt, p-Akt, p-IκBα ↓, IκBα ↑

Akt/NF-κB

[159]

 Losartan

Losartan

Ang II type 1 receptor antagonist

-

30 mg/kg

male apoE−/− mice + 5/6 nephrectomy to induce experimental mild uremia

antiinflammatory

anti-atherosclerosis

BUN, CRE, CCL2/MCP-1, CX3CL1, TNF-α, IL-6↓

IRE1α, p-IRE1α, GRP78, p-IKK, IKKα, IKKβ, p65 ↓, IκBα ↑

IRE1α/IKK/NF-κB

[70]

10 μmol/L

1 μg/ml Ang II + RAW264.7 murine macrophages to induce inflammation model

 TMP195

TMP195

class IIa histone deacetylase inhibitor

 

50 mg/kg/d, i.p

ApoE–/– mice + Western-type diet (21% fat) to induce atherosclerosis model

alleviate vascular inflammation

CXCL-1, CCL-2, TNF-α, IL-1β, IL-6, IL-8, VCAM-1 ↓

IKKβ, p-p65 ↓

IKKβ/NF-κB

[68]

3, 5 µmol/L

50 ng/mL mouse recombinant + Human Peripheral Blood Mononuclear Cells (PBMCs) to induce inflammation model

 LCY-2-CHO

LCY-2-CHO

carbazole analogue

-

3, 10 μM

50 nM TNF-α/10 ng/ml IL-1β + Rat aortic VSMCs to induce inflammation model

anti-inflammatory

HO-1, Nrf2, Lamin B, iNOS, COX-2, IL-8, GRO-α, eNOS, p-eNOS, MBP ↓

IKK, p-IKK ↓, IκBα ↑

IKK/NF-κB

[160]

other drugs

 β-defensins 3

β-defensins 3

Antimicrobial peptide

mucosa and epithelial cells

15, 10, 5 μg/ml

40 ng/ml TNF-α + (HUVECs + TPH-1)-induced inflammation and monocyte adhesion

anti-inflammatory, reduce monocyte adhesion

IL-6, IL-8, MCP-1, MIF, ICAM-1, VCAM-1, Bax, E-selectin, ROS, cleaved caspase-3/caspase-3↓, Bcl-2 ↑

p-IKK, p-IκBα, p-p65↓, IκBα ↑

NF-κB, MAPK

[162]

 Glucagon-like peptide 1

Liraglutide

incretin hormone

gut enteroendocrine cells

30 nM

5 ng/ml TNF-α + HUVECs-induced oxidative damage and inflammation

anti-oxidant stress, anti-inflammatory

SOD, catalase, GPx ↑

PKC-α, P-IKKα/β, IKKα, IKKβ ↓, IκBα ↑

-

[165]

s.c and tail i.v 0.2 mg/kg

2.5 mg/kg adriamycin (i.p.) + GK rats for 6 weeks- induced diabetic cardiomyopathy model

anti-oxidant stress, alleviate myocardial fibrosis

MDA↓, SOD, GPx ↑

PPARγ↑, p65 ↓

-

[164]

 Mediterranean diet + CoQ

-

-

-

Med diet + CoQ

Clinical inclusion criteria: age 65 years or older, body mass index 20 ~ 40 kg/m2, total cholesterol concentration ≤ 8.0 mmol/L, and nonsmokers

anti-inflammatory

IL-1β, JNK-1, MMP-9, sXBP-1, CRT, BiP/Grp78 ↓

p65, IKKβ ↓, IκBα ↑

-

[182]

 Jianpi huazhuo tiaozhi granules

-

chinese herbal medicine

-

2.5%, 5%, 10% concentrations

100 mg/L ox-LDL + RAW264.7 macrophage cells- induced oxidative stress injury model

anti-oxidant stress

anti-apoptosis

MDA, SOD, ROS, NOX4, p22phox

IKKα, IKKβ, p65↓

NOX/ROS/NF-κB

[62]

 Fufang-Zhenzhu-Tiaozhi Capsule

-

Chinese herbal medicine

-

0.66 mg/kg/d

male new zealand rabbits + balloon rubbing the endothelium of the abdominal aorta + a high fat diet (1.5% cholesterol, 0.5% sodium cholate, 8% lard, and 10% egg yolk powder)-induced atherosclerosis model

lipid-lowering

anti-inflammatory

TC, TG, LDL-C, VLDL-C, IL-1, IL-6, IL-8, IL-12, TNF-α, MCP-1, ICAM-1 ↓

p65, p-IκBα, IKK-α, p-IKKα/β↓, IκBα ↑

IKK/NF-κB

[169]

  1. i.p. Intraperitoneally, p.o. Persral oral