The procoagulant and proinflammatory plasma contact system.
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The procoagulant and proinflammatory plasma contact system. / Renné, Thomas.
In: SEMIN IMMUNOPATHOL, Vol. 34, No. 1, 1, 2012, p. 31-41.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - The procoagulant and proinflammatory plasma contact system.
AU - Renné, Thomas
PY - 2012
Y1 - 2012
N2 - The contact system is a plasma protease cascade that is initiated by coagulation factor XII activation on cardiovascular cells. The system starts procoagulant and proinflammatory reactions, via the intrinsic pathway of coagulation or the kallikrein-kinin system, respectively. The biochemistry of the contact system in vitro is well understood, however, its in vivo functions are just beginning to emerge. Data obtained in genetically engineered mice have revealed an essential function of the contact system for thrombus formation. Severe deficiency in contact system proteases impairs thrombus formation but does not reduce the hemostatic capacity of affected individuals. The system is activated by an inorganic polymer, polyphosphate that is released from activated platelets. Excessive inherited activation of the contact system causes a life-threatening swelling disorder, hereditary angioedema. Activation of the contact system by pathogens contributes to leakage in bacterial infections. Mast-cell-derived heparin triggers contact-system-mediated edema formation with implications for allergic disease states. Here we present an overview about the plasma contact system in occlusive and inflammatory disease and its contribution to health and pathology.
AB - The contact system is a plasma protease cascade that is initiated by coagulation factor XII activation on cardiovascular cells. The system starts procoagulant and proinflammatory reactions, via the intrinsic pathway of coagulation or the kallikrein-kinin system, respectively. The biochemistry of the contact system in vitro is well understood, however, its in vivo functions are just beginning to emerge. Data obtained in genetically engineered mice have revealed an essential function of the contact system for thrombus formation. Severe deficiency in contact system proteases impairs thrombus formation but does not reduce the hemostatic capacity of affected individuals. The system is activated by an inorganic polymer, polyphosphate that is released from activated platelets. Excessive inherited activation of the contact system causes a life-threatening swelling disorder, hereditary angioedema. Activation of the contact system by pathogens contributes to leakage in bacterial infections. Mast-cell-derived heparin triggers contact-system-mediated edema formation with implications for allergic disease states. Here we present an overview about the plasma contact system in occlusive and inflammatory disease and its contribution to health and pathology.
KW - Animals
KW - Humans
KW - Mice
KW - Mice, Transgenic
KW - Angioedemas, Hereditary/genetics/immunology
KW - Bacterial Infections/genetics/immunology
KW - Blood Coagulation/genetics/immunology
KW - Blood Platelets/immunology
KW - Factor XII/genetics/immunology
KW - Hypersensitivity/genetics/immunology
KW - Inflammation/genetics/immunology
KW - Kallikreins/genetics/immunology
KW - Kinins/genetics/immunology
KW - Plasma/immunology
KW - Platelet Activation/immunology
KW - Thrombosis/genetics/immunology
KW - Animals
KW - Humans
KW - Mice
KW - Mice, Transgenic
KW - Angioedemas, Hereditary/genetics/immunology
KW - Bacterial Infections/genetics/immunology
KW - Blood Coagulation/genetics/immunology
KW - Blood Platelets/immunology
KW - Factor XII/genetics/immunology
KW - Hypersensitivity/genetics/immunology
KW - Inflammation/genetics/immunology
KW - Kallikreins/genetics/immunology
KW - Kinins/genetics/immunology
KW - Plasma/immunology
KW - Platelet Activation/immunology
KW - Thrombosis/genetics/immunology
M3 - SCORING: Journal article
VL - 34
SP - 31
EP - 41
JO - SEMIN IMMUNOPATHOL
JF - SEMIN IMMUNOPATHOL
SN - 1863-2297
IS - 1
M1 - 1
ER -