Pro-coagulant effects of environmental particles (PM10)

P. S. Gilmour, Elspeth Rona Morrison, P. Henriksen, Mark Adrian Vickers, Isobel Ford, Michael Greaves, K. Donaldson, W. MacNee

Research output: Contribution to journalArticle

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Abstract

Background and Aims: Epidemiology studies have shown that cardiovascular ( CV) disease is primarily responsible for the mortality associated with increased pulmonary environmental particle (PM10) exposure. The mechanisms involved in PM10 mediated CV effects are unknown although changes in plasma viscosity and in the homoeostasis of blood coagulation have been implicated. It was hypothesised that PM10 exposure would result in an inflammatory response and enhance the activation of the extrinsic coagulation mechanisms in pulmonary and vascular cells in culture.

Methods: Primary human monocyte derived macrophages and human umbilical cord vein endothelial, human alveolar type II epithelial ( A549), and human bronchial epithelial ( 16HBE) cells were tested for their inflammatory and procoagulant response to PM10 exposure. IL-8, tissue factor (TF), and tissue plasminogen activator (tPA) gene expression and protein release, and coagulation enhancing ability of culture media were determined 6 and 24 hours following exposure.

Results: The culture media from macrophages and 16HBE bronchial epithelial cells, but not A549 cells, exposed to PM10 had an enhanced ability to cause clotting. Furthermore, H2O2 also increased the clotting activity. Apoptosis was significantly increased in macrophages exposed to PM10 and LPS as shown by annexin V binding. TF gene expression was enhanced in macrophages exposed to PM10, and HUVEC tissue factor and tPA gene and protein expression were inhibited.

Conclusions: These data indicate that PM10 has the ability to alter macrophage, epithelial, and endothelial cell function to favour blood coagulation via activation of the extrinsic pathway and inhibition of fibrinolysis pathways.

Original languageEnglish
Pages (from-to)164-171
Number of pages7
JournalOccupational and Environmental Medicine
Volume62
DOIs
Publication statusPublished - 2005

Keywords

  • PARTICULATE AIR-POLLUTION
  • RESPIRATORY-DISTRESS-SYNDROME
  • TISSUE FACTOR ACTIVITY
  • ACUTE LUNG INJURY
  • DAILY TIME-SERIES
  • EPITHELIAL-CELLS
  • ULTRAFINE PARTICLES
  • ENDOTHELIAL-CELLS
  • INHALED PARTICLES
  • ORGANIC DUST

Cite this

Gilmour, P. S., Morrison, E. R., Henriksen, P., Vickers, M. A., Ford, I., Greaves, M., ... MacNee, W. (2005). Pro-coagulant effects of environmental particles (PM10). Occupational and Environmental Medicine, 62, 164-171. https://doi.org/10.1136/oem.2004.014951

Pro-coagulant effects of environmental particles (PM10). / Gilmour, P. S.; Morrison, Elspeth Rona; Henriksen, P.; Vickers, Mark Adrian; Ford, Isobel; Greaves, Michael; Donaldson, K.; MacNee, W.

In: Occupational and Environmental Medicine, Vol. 62, 2005, p. 164-171.

Research output: Contribution to journalArticle

Gilmour, PS, Morrison, ER, Henriksen, P, Vickers, MA, Ford, I, Greaves, M, Donaldson, K & MacNee, W 2005, 'Pro-coagulant effects of environmental particles (PM10)', Occupational and Environmental Medicine, vol. 62, pp. 164-171. https://doi.org/10.1136/oem.2004.014951
Gilmour, P. S. ; Morrison, Elspeth Rona ; Henriksen, P. ; Vickers, Mark Adrian ; Ford, Isobel ; Greaves, Michael ; Donaldson, K. ; MacNee, W. / Pro-coagulant effects of environmental particles (PM10). In: Occupational and Environmental Medicine. 2005 ; Vol. 62. pp. 164-171.
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T1 - Pro-coagulant effects of environmental particles (PM10)

AU - Gilmour, P. S.

AU - Morrison, Elspeth Rona

AU - Henriksen, P.

AU - Vickers, Mark Adrian

AU - Ford, Isobel

AU - Greaves, Michael

AU - Donaldson, K.

AU - MacNee, W.

PY - 2005

Y1 - 2005

N2 - Background and Aims: Epidemiology studies have shown that cardiovascular ( CV) disease is primarily responsible for the mortality associated with increased pulmonary environmental particle (PM10) exposure. The mechanisms involved in PM10 mediated CV effects are unknown although changes in plasma viscosity and in the homoeostasis of blood coagulation have been implicated. It was hypothesised that PM10 exposure would result in an inflammatory response and enhance the activation of the extrinsic coagulation mechanisms in pulmonary and vascular cells in culture.Methods: Primary human monocyte derived macrophages and human umbilical cord vein endothelial, human alveolar type II epithelial ( A549), and human bronchial epithelial ( 16HBE) cells were tested for their inflammatory and procoagulant response to PM10 exposure. IL-8, tissue factor (TF), and tissue plasminogen activator (tPA) gene expression and protein release, and coagulation enhancing ability of culture media were determined 6 and 24 hours following exposure.Results: The culture media from macrophages and 16HBE bronchial epithelial cells, but not A549 cells, exposed to PM10 had an enhanced ability to cause clotting. Furthermore, H2O2 also increased the clotting activity. Apoptosis was significantly increased in macrophages exposed to PM10 and LPS as shown by annexin V binding. TF gene expression was enhanced in macrophages exposed to PM10, and HUVEC tissue factor and tPA gene and protein expression were inhibited.Conclusions: These data indicate that PM10 has the ability to alter macrophage, epithelial, and endothelial cell function to favour blood coagulation via activation of the extrinsic pathway and inhibition of fibrinolysis pathways.

AB - Background and Aims: Epidemiology studies have shown that cardiovascular ( CV) disease is primarily responsible for the mortality associated with increased pulmonary environmental particle (PM10) exposure. The mechanisms involved in PM10 mediated CV effects are unknown although changes in plasma viscosity and in the homoeostasis of blood coagulation have been implicated. It was hypothesised that PM10 exposure would result in an inflammatory response and enhance the activation of the extrinsic coagulation mechanisms in pulmonary and vascular cells in culture.Methods: Primary human monocyte derived macrophages and human umbilical cord vein endothelial, human alveolar type II epithelial ( A549), and human bronchial epithelial ( 16HBE) cells were tested for their inflammatory and procoagulant response to PM10 exposure. IL-8, tissue factor (TF), and tissue plasminogen activator (tPA) gene expression and protein release, and coagulation enhancing ability of culture media were determined 6 and 24 hours following exposure.Results: The culture media from macrophages and 16HBE bronchial epithelial cells, but not A549 cells, exposed to PM10 had an enhanced ability to cause clotting. Furthermore, H2O2 also increased the clotting activity. Apoptosis was significantly increased in macrophages exposed to PM10 and LPS as shown by annexin V binding. TF gene expression was enhanced in macrophages exposed to PM10, and HUVEC tissue factor and tPA gene and protein expression were inhibited.Conclusions: These data indicate that PM10 has the ability to alter macrophage, epithelial, and endothelial cell function to favour blood coagulation via activation of the extrinsic pathway and inhibition of fibrinolysis pathways.

KW - PARTICULATE AIR-POLLUTION

KW - RESPIRATORY-DISTRESS-SYNDROME

KW - TISSUE FACTOR ACTIVITY

KW - ACUTE LUNG INJURY

KW - DAILY TIME-SERIES

KW - EPITHELIAL-CELLS

KW - ULTRAFINE PARTICLES

KW - ENDOTHELIAL-CELLS

KW - INHALED PARTICLES

KW - ORGANIC DUST

U2 - 10.1136/oem.2004.014951

DO - 10.1136/oem.2004.014951

M3 - Article

VL - 62

SP - 164

EP - 171

JO - Occupational and Environmental Medicine

JF - Occupational and Environmental Medicine

SN - 1351-0711

ER -