Reaper, Hid, and Grim are three Drosophila cell death activators that each contain a conserved NH(2)-terminal Reaper, Hid, Grim (RHG) motif. We have analyzed the importance of the RHG motifs in Reaper and Grim for their different abilities to activate cell death during development. Analysis of chimeric R/Grim and G/Reaper proteins indicated that the Reaper and Grim RHG motifs are functionally d...

BACKGROUND Peripheral blood hematopoietic cell transplantation (PBHCT) is a feasible treatment option for dogs with B-cell lymphoma. OBJECTIVE To examine apheresis and PBHCT outcomes in dogs diagnosed with T-cell lymphoma (TCL). ANIMALS Fifteen client-owned dogs diagnosed with high-grade TCL. METHODS After high-dose cyclophosphamide and rhG-colony-stimulating (rhG-CSF) factor treatment, p...

OBJECTIVES The goal of this study was to investigate the effect of mobilized stem cells by granulocyte-colony stimulating factor (G-CSF) on neointimal growth, the biologic impact on vascular healing process, and the utility of paclitaxel-eluting stent (PES) in this circumstance. BACKGROUND Questions have been raised on the safety of stem cell mobilization because of the tendency of neointimal...

BACKGROUND Regenerative strategies in the treatment of acute stroke may have great potential. Hematopoietic growth factors mobilize hematopoietic stem cells and may convey neuroprotective effects. We examined the safety, potential functional and structural changes, and CD34(+) cell-mobilization characteristics of G-CSF treatment in patients with acute ischemic stroke. METHODS AND RESULTS Thre...

Several hematopoietic cytokines have been investigated for their potential to provide protection from the lethal consequences of bone marrow aplasia after total body irradiation (TBI). Some can increase the dose of irradiation tolerated by the animals; none allow endogenous recovery after doses such as administered in clinical blood or marrow transplantation. We tested the radioprotective poten...

Intravascular adenosine triphosphate (ATP) evokes vasodilation and is implicated in the regulation of skeletal muscle blood flow during exercise. Mechanical stresses to erythrocytes and endothelial cells stimulate ATP release in vitro. How mechanical effects of muscle contractions contribute to increased plasma ATP during exercise is largely unexplored. We tested the hypothesis that simulated m...

Recombinant human granulocyte colony-stimulating factor (rhGCSF) has been widely and successfully used in treating childhood congenital or idiopathic neutropenia.' Recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) has been less commonly and, in some patients in whom it failed, rhGCSF was able to restore normal granulocyte count? We report a case with a negative respo...