M. J. Broekman

Downregulation of human platelet reactivity by neutrophils. Participation of lipoxygenase derivatives and adhesive proteins.

Valles, J, Santos, M T, Marcus, A J, Safier, L B, Broekman, M J, Islam, N, ...

Unstimulated neutrophils inhibited activation and recruitment of thrombin- or collagen-stimulated platelets in an agonist-specific manner. This occurred under conditions of close physical cell-cell...

Cardiac preservation is enhanced in a heterotopic rat transplant model by supplementing the nitric oxide pathway.

Pinsky, D J, Oz, M C, Koga, S, Taha, Z, Broekman, M J, Marcus, A J, ...

Nitric oxide (NO) is a novel biologic messenger with diverse effects but its role in organ transplantation remains poorly understood. Using a porphyrinic microsensor, the first direct measurements of...

Inhibition of platelet function by an aspirin-insensitive endothelial cell ADPase. Thromboregulation by endothelial cells.

Marcus, A J, Safier, L B, Hajjar, K A, Ullman, H L, Islam, N, Broekman, M J, ...

We previously reported that platelets become unresponsive to agonists when stimulated in combined suspension with aspirin-treated human umbilical vein endothelial cells. Inhibition occurred...

Enhancement of platelet reactivity and modulation of eicosanoid production by intact erythrocytes. A new approach to platelet activation and recruitment.

Santos, M T, Valles, J, Marcus, A J, Safier, L B, Broekman, M J, Islam, N, ...

Erythrocytes are known to influence hemostasis. Bleeding times are prolonged in anemia and corrected by normalizing the hematocrit. We now demonstrate that intact erythrocytes modulate biochemical...

12S,20-dihydroxyicosatetraenoic acid: a new icosanoid synthesized by neutrophils from 12S-hydroxyicosatetraenoic acid produced by thrombin- or collagen-stimulated platelets.

Marcus, A J, Safier, L B, Ullman, H L, Broekman, M J, Islam, N, Oglesby, T D, ...

A new metabolite of arachidonic acid, formed during interaction between thrombin- or collagen-stimulated platelets and unstimulated neutrophils, has been demonstrated by both thin-layer...

Enhancement of mononuclear procoagulant activity by platelet 12-hydroxyeicosatetraenoic acid.

Lorenzet, R, Niemetz, J, Marcus, A J, Broekman, M J

Platelets induce generation of procoagulant tissue factor activity (TFa) by mononuclear leukocytes, and also enhance the TFa induced by endotoxin. Our present investigation demonstrated that...

Studies on the mechanism of omega-hydroxylation of platelet 12-hydroxyeicosatetraenoic acid (12-HETE) by unstimulated neutrophils.

Marcus, A J, Safier, L B, Ullman, H L, Islam, N, Broekman, M J, Von Schacky, C

Stimulated platelets, in the presence or absence of aspirin, synthesize significant quantities of 12-hydroxyeicosatetraenoic acid (12-HETE), which is chemotactic and chemokinetic, and enhances...

The endothelial cell ecto-ADPase responsible for inhibition of platelet function is CD39.

Marcus, A J, Broekman, M J, Drosopoulos, J H, Islam, N, Alyonycheva, T N, Safier, L B, ...

We previously demonstrated that when platelets are in motion and in proximity to endothelial cells, they become unresponsive to agonists (Marcus, A.J., L.B. Safier, K.A. Hajjar, H.L. Ullman, N....

Inhibition of platelet function by recombinant soluble ecto-ADPase/CD39.

Gayle, R B, Maliszewski, C R, Gimpel, S D, Schoenborn, M A, Caspary, R G, Richards, C, ...

Excessive platelet accumulation and recruitment, leading to vessel occlusion at sites of vascular injury, present major therapeutic challenges in cardiovascular medicine. Endothelial cell CD39, an...

Phospholipid metabolism in human neutrophils activated by N-formyl-methionyl-leucyl-phenylalanine. Degranulation is not required for release of arachidonic acid: studies with neutrophils and neutrophil-derived cytoplasts.

Wynkoop, E M, Broekman, M J, Korchak, H M, Marcus, A J, Weissmann, G

Neutrophils respond to chemoattractants by aggregating, degranulating, remodelling of phospholipids and releasing arachidonic acid. To determine whether ligand-induced remodelling of phospholipids...

Downregulation of human platelet reactivity by neutrophils. Participation of lipoxygenase derivatives and adhesive proteins.

Valles, J, Santos, M T, Marcus, A J, Safier, L B, Broekman, M J, Islam, N, ...

Unstimulated neutrophils inhibited activation and recruitment of thrombin- or collagen-stimulated platelets in an agonist-specific manner. This occurred under conditions of close physical cell-cell...

Cardiac preservation is enhanced in a heterotopic rat transplant model by supplementing the nitric oxide pathway.

Pinsky, D J, Oz, M C, Koga, S, Taha, Z, Broekman, M J, Marcus, A J, ...

Nitric oxide (NO) is a novel biologic messenger with diverse effects but its role in organ transplantation remains poorly understood. Using a porphyrinic microsensor, the first direct measurements of...

Inhibition of platelet function by an aspirin-insensitive endothelial cell ADPase. Thromboregulation by endothelial cells.

Marcus, A J, Safier, L B, Hajjar, K A, Ullman, H L, Islam, N, Broekman, M J, ...

We previously reported that platelets become unresponsive to agonists when stimulated in combined suspension with aspirin-treated human umbilical vein endothelial cells. Inhibition occurred...

Enhancement of platelet reactivity and modulation of eicosanoid production by intact erythrocytes. A new approach to platelet activation and recruitment.

Santos, M T, Valles, J, Marcus, A J, Safier, L B, Broekman, M J, Islam, N, ...

Erythrocytes are known to influence hemostasis. Bleeding times are prolonged in anemia and corrected by normalizing the hematocrit. We now demonstrate that intact erythrocytes modulate biochemical...

12S,20-dihydroxyicosatetraenoic acid: a new icosanoid synthesized by neutrophils from 12S-hydroxyicosatetraenoic acid produced by thrombin- or collagen-stimulated platelets.

Marcus, A J, Safier, L B, Ullman, H L, Broekman, M J, Islam, N, Oglesby, T D, ...

A new metabolite of arachidonic acid, formed during interaction between thrombin- or collagen-stimulated platelets and unstimulated neutrophils, has been demonstrated by both thin-layer...

Enhancement of mononuclear procoagulant activity by platelet 12-hydroxyeicosatetraenoic acid.

Lorenzet, R, Niemetz, J, Marcus, A J, Broekman, M J

Platelets induce generation of procoagulant tissue factor activity (TFa) by mononuclear leukocytes, and also enhance the TFa induced by endotoxin. Our present investigation demonstrated that...

Studies on the mechanism of omega-hydroxylation of platelet 12-hydroxyeicosatetraenoic acid (12-HETE) by unstimulated neutrophils.

Marcus, A J, Safier, L B, Ullman, H L, Islam, N, Broekman, M J, Von Schacky, C

Stimulated platelets, in the presence or absence of aspirin, synthesize significant quantities of 12-hydroxyeicosatetraenoic acid (12-HETE), which is chemotactic and chemokinetic, and enhances...

The endothelial cell ecto-ADPase responsible for inhibition of platelet function is CD39.

Marcus, A J, Broekman, M J, Drosopoulos, J H, Islam, N, Alyonycheva, T N, Safier, L B, ...

We previously demonstrated that when platelets are in motion and in proximity to endothelial cells, they become unresponsive to agonists (Marcus, A.J., L.B. Safier, K.A. Hajjar, H.L. Ullman, N....

Inhibition of platelet function by recombinant soluble ecto-ADPase/CD39.

Gayle, R B, Maliszewski, C R, Gimpel, S D, Schoenborn, M A, Caspary, R G, Richards, C, ...

Excessive platelet accumulation and recruitment, leading to vessel occlusion at sites of vascular injury, present major therapeutic challenges in cardiovascular medicine. Endothelial cell CD39, an...

Phospholipid metabolism in human neutrophils activated by N-formyl-methionyl-leucyl-phenylalanine. Degranulation is not required for release of arachidonic acid: studies with neutrophils and neutrophil-derived cytoplasts.

Wynkoop, E M, Broekman, M J, Korchak, H M, Marcus, A J, Weissmann, G

Neutrophils respond to chemoattractants by aggregating, degranulating, remodelling of phospholipids and releasing arachidonic acid. To determine whether ligand-induced remodelling of phospholipids...