Table 6.
Models | Exposure | Intervention | Results | Interpretation | References | ||
---|---|---|---|---|---|---|---|
Inflammation and Oxidative Stress | Coagulation and Adhesion Molecules | Blood Parameters | |||||
Male mice (C57BL/6) 8–12 wk-old |
Intratracheal instillation of urban PM (SRM1649a) 200 µg/animal Evaluated at 24 h after exposure |
Pretreated with # Vesicular monoamine transporter: Reserpine (chemical sympathectomy) # Propranolol 3 mg/kg IP q 8 h for 48 h |
↓ NE in BALF, BAT, adrenal gland, lung ↓ IL-6 in BALF ↓ IL-6 in BALF |
↓ plasma TAT complexes ↓ plasma TAT complexes ↑ thrombotic occlusion time |
Blocking of the sympathetic nervous system and β2AR signaling alleviated IL-6 release, lung inflammation, and reduced thrombosis. | [44] | |
Male mice C57Bl6/j 8–12 wk-old |
Inhalation exposure to concentrated ambient particles (CAPs) from downtown Chicago for 8 h/d for 3 d Evaluated at 24 h after exposure |
Pretreated with TNF-α inhibitor, Etanercept 10 mg/kg IP. 3 days before, and on the first day of exposure to CAPs |
↓ PAI-1/18s mRNA | Blocking TNF-α could promote normal fibrinolytic function, but not alter the PM-induced clotting formation. | [56] | ||
Intratracheal instillation of urban PM (SRM1649a) 200 µg/animal Evaluate at 24 h after exposure |
Pretreated with TNF-α inhibitor, Etanercept 10 mg/kg IP. 3 days before, and on the first day of exposure to PM |
↔ Bleeding time ↔ PT, ↔ PTT ↔ TAT complexes ↓ PAI-1/18s mRNA ↓ PAI-1 in BALF |
|||||
Hamsters 100–110 g |
Intratracheal instillation of DEP (SRM 1650) 50 µg/animal For 1, 3, 6, 24 h after exposure |
Pretreated with Antihistamine: Diphenhydramine IP 30 mg/kg for 1 h | BALF ↓ cell count, PMN influx ↓ histamine plasma ↓ histamine |
↓ thrombus formation ↑ PFA100 closure time |
Pretreatment with diphenhydramine reduced the effects of DEP-induced pulmonary inflammation and peripheral thrombosis. | [67] | |
Hamsters (Pfd Gold) 100–110 g |
Intratracheal instillation of DEP (SRM 1650) 50 µg/animal Evaluation at 24 h after exposure |
# Pretreated dexamethasone IP 5 mg/kg # Pretreated dexamethasone IT 0.1 or 0.5 mg/kg # Pretreated Sodium Cromoglycate IP 40 mg/kg for 1 h |
# Dexamethasone IP: ↓ BALF cell count, PMN ↓ BALF and plasma histamine # Dexamethasone IT (0.5 mg/kg): ↓ BALF cell count, PMN ↓ BALF histamine ↔ plasma histamine # Sodium cromoglycate: ↓ BALF cell count, PMN ↓ BALF and plasma histamine |
# Dexamethasone IP: ↓ thrombus formation # Dexamethasone IT (0.5 mg/kg): ↓ thrombus formation # Sodium cromoglycate: ↑ PFA100 closure time |
Dexamethasone prevented PM-induced lung inflammation, histamine release, and thrombosis. Anti-inflammatory pretreatment also helped prevent PM-induced histamine release and reduced the prothrombotic state. |
[68] | |
Male TO mice (HsdOla: TO) 30–35 g |
Intratracheal instillation of DEP (SRM 2975) 15 µg/animal on day 0, 2, 4, 6 Evaluation at 48 h after the last exposure |
Pretreated with Curcumin (200 µl) oral gavage for 1 h |
BALF: ↓ PMN, macrophages ↓ TNF-α ↔ IL-6 Plasma: ↓ CRP ↓ TNF-α ↔ IL-6 |
↑ thrombotic occlusion time ↓ D-dimer ↓ PAI-1 ↔ VWF |
↑ Platelet | Curcumin pretreatment prevented DEP-induced inflammation and promoted fibrinolytic activity, which diminished the prothrombotic state. | [66] |
Male TO mice (HsdOla: TO) 30–35 g |
Intratracheal instillation of DEP (SRM 2975) 30 µg/animal Evaluation at 4, and 18 h after exposure |
Pretreated with anti-inflammatory agent: Thymoquinone IP 6 mg/kg for 1 and 24 h |
BALF ↓ PMN, macrophages ↓ IL-6 ↓ total protein Plasma ↓ IL-6 ↑ superoxide dismutase |
↑ thrombotic occlusion time | ↓ WBC ↑ Platelets |
Thymoquinone pretreatment significantly prevented DEP-induced inflammatory response, oxidative stress, and thrombosis. | [48] |
Male TO mice | Intratracheal instillation of DEP 1 mg/kg Evaluation at 24 h after exposure |
Emodin (antioxidant/anti-inflammation) IP 4 mg/kg twice, 1 h before, and 7 h after exposure |
↓ TNF-α ↓ IL-1β ↑ superoxide dismutase ↓ glutathione reductase |
↑ thrombotic occlusion time | ↓ Hb, Hct, RBC ↓ WBC |
Administration of antioxidants prevented DEP-induced inflammatory response, oxidative stress, and thrombotic complications. | [47] |
DM type II patients (N = 30) Mean age 56.5 y |
Acute exposure to ambient PM in Rochester, NY, USA Evaluated the PM level at 1, 12, 24, 48, 96 h |
8 wk sequential therapy with # ASA 81 mg/d for 7 d # Fish oil 4 g/d for 28 d # Combined for 7 d |
# ASA, and/or fish oil: ↔ TBXB2 ↔ ADP-, and collagen-induced platelet aggregation |
ASA/fish oil blunted the effect of pollution on platelet function and TBXB2. | [78] |
ADP: adenosine diphosphate, BAL: bronchoalveolar lavage, BALF: bronchoalveolar lavage fluid, BAT: brown adipose tissue, β2AR: adrenergic receptor beta-2, CAPs: concentrated ambient particles, CRP: C-reactive protein, d: days, DEP: diesel exhaust particles, DM: diabetes mellitus, h: hours, Hb: hemoglobin, Hct: hematocrit, IL-1β: interleukin-1β, IL-6: interleukin-6, IL-10: interleukin-10, IL-12: interleukin-12, IFN-γ: interferon-γ, IP: intraperitoneal injection, IT: intratracheally instillation, MCP-1: monocyte chemoattractant protein-1, mRNA: messenger ribonucleic acid, NE: norepinephrine, PAI-1: plasminogen activator inhibitor-1, PFA100: platelet function analyzer-100, PM: particulate matter, PM10: particulate matter in diameter <10 µm, PMN: polymorphonuclear cells, PT: prothrombin time, PTT: partial thromboplastin time, RBC: red blood cells, SRM: standard reference material, TAT: thrombin-antithrombin complexes, TBXB2: thromboxane B2, TF: tissue factor, TNF-α: tumor necrotic factor-α, TO mice: Tuck-Ordinary mice, VWF: von Willebrand factor, WBC: white blood cells, wk: weeks, WT mice: wide type mice, y: years.