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Table 5 Targeting NADPH oxidases in skeletal muscle

From: Crossroads between peripheral atherosclerosis, western-type diet and skeletal muscle pathophysiology: emphasis on apolipoprotein E deficiency and peripheral arterial disease

Reference

Intervention

Findings

[94]

♂ ApoE-/- (16wks); ND or HFD (15.8% fat, 1.25% cholesterol) for 8wks; For 4wks; HFD + Nox2 inhibitor peptide (Nox2ds-tat) or HFD plus control sequence (scrambled, Scr)

↑ cholesterol and TGs in Scr and Nox2ds-tat; ↑ O2 .- production in carotid arteries and atherosclerotic lesions throughout the aorta of HFD and Scr but ↓ in Nox2ds-tat; ↓ mRNA expression of p47phox and p22phox in Nox2ds-tat vs Scr; ↑ gene expression of VEGF, HIF1α, visfatin and MMP9 in carotid arteries of Scr, ↓ in Nox2ds-tat; ↑ MMP9 activity and protein levels in carotid arteries of Scr vs ND and ↓ in Nox2ds-tat

[90]

♂, gp91-/-, ApoE-/- and ApoE-/-/p47-/- (18wks); ND and HFD for 10wks (15% w/w fat, 34% kcal from fat)

↓ p47-/- in gp91-/- response of SMC in growth factors in vs WT; ↓ O2 .- expression in aortas of p47-/- vs WT; ↔ ApoE-/- and ApoE-/-/p47-/- in serum lipid levels; ↓ lesion area throughout the aorta, ↔ in the aortic sinus in ApoE-/-/p47-/- vs ApoE-/- HFD

[228]

♂ ApoE-/-, ApoE-/-/p47-/- (16wks); ND

↔ basal O2 .- levels in aorta that ↓ in ApoE-/-/p47-/- after inhibition of SOD; ↔ aortic lesion area, serum blood levels and aortic blood pressure

[233]

♂ and ♀ WT, gp91-/- (30wks), ApoE-/-, ApoE-/-/gp91-/- (24wks); HFD for 20wks in WT and gp91-/- (15% w/w, 37.1% kcal from fat, 1.25% cholesterol, and 0.5% sodium cholate); ApoE-/-and ApoE-/-/gp91-/- in ND

↓ O2 .- production from peritoneal macrophages in gp91-/- and WT; ↔ gp91-/- and WT in plasma lipid profile and lesion area (♀: ↓ plasma TGs and ↑ lesions);

↓ plasma cholesterol & TGs (only in ♂ ApoE-/-/gp91-/- vs ApoE-/-); ↓ 2-fold HDL and ↑ 60% of LDL in ApoE-/-/gp91-/- vs ApoE-/-; ↔ aortic sinus lesion area in ApoE-/-/gp91-/- vs ApoE-/-

[57]

♂ApoE-/- & (12 and 19wks); WD (21% w/w fat, 40% kcal and 0.15% cholesterol) for 7 and 14wks

↓ superoxide production, ↑ NO bioavailability and ↓ lesion coverage in Nox2-/yApoE-/-

[229]

♂ and ♀ ApoE-/-, ApoE-/-/p47-/- ; Bone marrow transplanted mice for 4wks in ND and then in WD (42% kcal from fat, 0.2% cholesterol) for 12wks; (Control: Bone marrow transplantation from ApoE-/- to ApoE-/-)

↓ VWO & BMO in atherosclerotic coverage, lesion size with fewer macrophages and O2 .-production vs Control; ↔ BMO & VWO in total cholesterol, TGs, expression of p22phox and catalytic subunits of Nox1 and Nox4; ↓ BMO in oxLDL levels vs VWO and Control; ↓ VWO in gene expression and immunostaining of VCAM1, iCAM1 and P Selectin vs BMO and control

↓ ApoE-/-/p47phox-/- in neointimal hyperplasia after femoral injury vs ApoE-/-; ↑ VSMC proliferation in ApoE-/- vs ApoE-/-/p47phox-/-

[225]

ApoE-/-, Nox2Tg ApoE-/-(9-24wks); Sex, NS; ND

↑ O2 .- in Nox2Tg ApoE-/-; ↑ VCAM1 and macrophage recruitment in Nox2Tg ApoE-/- only at 9wks; ↔ total plasma cholesterol, LDL, HDL, TGs, OxLDL lesion area, lesion progression and composition, macrophage recruitment and lipid deposition in Nox2Tg ApoE-/-; Treatment with AngII for 4wks ↑ lesions in a dose-dependent manner similarly

[231]

♂ ApoE-/- and Nox1-/yApoE-/- (12, 19 and 26wks); WD (21% w/w fat and 0.15% cholesterol) for 7,14, or 21wks

↑ VLDL/LDL, TGs, O2 .- and intimal thickening in aortic sinus in Nox1-/yApoE-/-; ↔ plaque area in Nox1-/yApoE-/- ; ↓ collagen, SMCs and ↑ MMP-9 in aortic sinus lesions in Nox1-/yApoE-/-

[230]

♂ ApoE-/- and Nox1-/yApoE-/- (24wks); HFD for 18wks (42% kcal from fat)

↓ aortic lesions, O2 .- production and number of macrophages in lesions in Nox1-/yApoE-/-

[91]

♂ WT (28 wks old); HFD for 8wks (60% kcal from fat) or ND, a HFD subgroup treated with apocynin

↑ plasma insulin, glucose and HOMA-IR in HFD; ↓ glucose uptake from muscle and ↑ H2O2 in myofibres after insulin stimulation of HFD; GSH/GSSG ratio in muscle of HFD; ↑ Nox2 and p47phox protein expression in HFD muscle; ↓ insulin resistance in whole body and muscle and p47phox and Nox2 levels in muscle of HFD after treatment with apocynin

[239]

♂ WT and Nox2-/y (18 and 42wks); ND or HFD (45% kcal from fat) for 3 or 9 months

↑↑ WT HFD and ↑ Nox2-/y in BW, HOMA-IR and GTT; ↔ oxidative and glycolytic myofibres; ↑ Nox2, p22phox, p67phox and O2 .-production in the muscle of WT HFD; ↑ Nox2-/y HFD and ↓ WT HFD in Glut4 and Akt phosphorylation of muscle; ↑ Nox2, p22phox, p67phox and ↓ phosphorylated Akt and glucose uptake in myoblasts treated with palmitate or high concentration of glucose; ↓ phosphorylated Akt and glucose uptake in shRNA Nox2-expressing myoblasts after treatment with H2O2

  1. Abbreviations and Symbols: Akt Protein Kinase B, AngII Angiotensin II, ApoE -/- Apolipoprotein E knockout, ApoE -/- /gp91 -/- Double Apolipoprotein E knockout and gp91 knockout, ApoE -/- /Nox1 -/y Double Apolipoprotein E knockout and Nox1 knockout, ApoE -/- /p47 -/- Double Apolipoprotein E knockout and p47 knockout, BMO Bone Marrow transplantation from ApoE-/-/p47phox-/- to ApoE-/-, BW Body Weight, DHE Dihydroethidium, Glut4 Glucose Transporter Type 4, gp91 -/- gp91 knockout, GSH Glutathione reduced, GSSG glutathione oxidised, GTT Glucose Tolerance Test, H 2 O 2 Hydrogen Peroxide, HDL High-density lipoprotein, HIF1a Hypoxia Inducible Factor 1a, HFD High-fat Diet, HOMA-IR Homeostatic Model Assessment for Insulin Resistance, iCAM1 Intercellular adhesion molecule 1, LDL Low-density lipoprotein, MMP9 Matrix metalloproteinase 9, Nox2 nicotinamide adenine dinucleotide phosphate-oxidase 2, Nox2 -/y Nox2 Knockout, Nox2Tg ApoE -/- ApoE-/- with overexpression of Nox2 specifically in Endothelial Cells, ND Normal Diet (chow diet), NS Not Specified, O 2 .- Superoxide, oxLDL Oxidised LDL, p47phox -/- p47phox knockout, shRNA Nox2-expressing Short Hairpin RNA to silence Nox2 expression, SOD Superoxide Dismutase, SMC Smooth Muscle Cells, TGs Triglycerides, VCAM1 Vascular cell adhesion molecule 1, VEGF Vascular Endothelial Growth Factor, VLDL Very low-density lipoproteins, VSMC vascular smooth muscle cells, VWO Bone Marrow transplantation from ApoE-/- to ApoE-/-/p47phox-/-, WD Western-type diet, WT wild type; ↓ decrease, ↑ increase, ↔ similar; All strains WT, ApoE-/-, ApoE-/-/gp91-/-, gp91-/-, Nox2Tg ApoE-/-, Nox1-/yApoE-/-, Nox2-/yApoE-/- and p47-/-are on a C57Bl/6 background