Acute graft-versus-host disease (GVHD). a major complication of allogeneic bone marrow transplantation (BMT). is probably mediated by T lymphocytes present in the marrow graft. In this study. the repopulation of the peripheral blood with T4 and T8 T cells was investigated during the period preceding the occurrence of acute GVHD. Twentyfour allogeneic and 1 1 autologous BMT recipients were monit...

Despite the availability of new antifungal compounds, invasive fungal infection remains a significant cause of morbidity and mortality in children and adults undergoing allogeneic hematopoietic stem cell transplantation (HSCT). Allogeneic HSCT recipients suffer from a long lasting defect of different arms of the immune system, which increases the risk for and deteriorates the prognosis of invas...

Concomitant use of allogeneic donor granulocyte transfusions and amphotericin B in febrile neutropenic recipients may be limited by the increased incidence of respiratory distress. In vitro effects of amphotericin B and AmBisome were compared on polymorphonuclear leukocyte (PMN) aggregation from PMNs isolated from granulocyte-colony-stimulating factor (G-CSF)/dexamethasone-mobilized allogeneic ...

Allogeneic bone marrow transplantation (BMT) after high-dose, marrow-ablative chemoradiotherapy has been established as the treatment of choice for various hematologic, neoplastic, and congenital disorders. The most common type of marrow graft is an allogeneic one from a sibling donor who has compatible human leukocyte antigen (HLA). Only 30% of patients requiring allogeneic BMT have an HLA-com...

The major challenge in allogeneic hematopoietic cell transplantation is how to transfer allogeneic T-cell immunity without causing graft-versus-host disease (GVHD). Here we report a novel strategy to selectively prevent GVHD by depleting CD62L(+) T cells (naive and a subset of memory T cells). In unprimed mice, CD62L(-) T cells (a subset of memory T cells) failed to proliferate in response to a...

BACKGROUND The reduced intensity of nonmyeloablative stem cell transplant (NMSCT) has enabled older patients to benefit from allogeneic therapy. Identification of suitable donors remains an obstacle. The use of alternative donors for stem cell therapy is essential to ensure broad applicability of allogeneic therapy. METHODS Clinical results using alternative hematopoietic stem cell donors are...

In order to determine whether an allogeneic tendon could be used to replace an extra-articular ligament, the right medial collateral ligament from 11 adult dogs was replaced with a fresh-frozen allogeneic patellar tendon. At each of 3, 6, 15, 30 and 52 weeks postoperatively, one dog was killed for micro-angiographical and histological studies; at 52 weeks the remaining six dogs were killed for ...

Granulocytic sarcoma, a localized extramedullary tumor composed of myeloid blasts, develops in 2–6% of patients at the time of newly diagnosed acute myeloid leukemia (AML).1,2 Granulocytic sarcoma relapse following an allogeneic stem-cell transplant (SCT) is associated with marrow relapse in 20% of patients.2 Isolated granulocytic sarcoma following an allogeneic transplant is rare, seen in only...

CD4 CD25 immunoregulatory T cells play a pivotal role in preventing organ-specific autoimmune diseases and in tolerance induction to allogeneic organ transplants. We investigated whether these cells could also control graft-versus-host disease (GVHD), the main complication after allogeneic hematopoietic stem cell transplantation (HSCT). Here, we show that the few CD4 CD25 T cells naturally pres...

Introduction It has been well documented that bone marrow stromal cells (MSCs) are progenitors of various structural and connective tissues, including bone, cartilage, and fat. Recent studies reported that MSCs could suppress lymphocyte proliferation in vitro and allogeneic MSCs implanted by systemic infusion could “home” to bone marrow of nonMHC matched baboons. These results have positive imp...