Abstract:
:CD34+ cells were purified in bulk from apheresis-collected cells of children with cancer using monoclonal antibody (MoAb) and magnetic beads (Baxter ISOLEX system). To improve the purity of the final product for possibly better tumor cell purging and to make the manufacturer's original procedure more cost-effective, we incubated the cells for 30 min with l-phenylalanine methylester hydrochloride (PME) to reduce the cell number by removing contaminating granulocytes and monocytes in the initial step before incubation with MoAb. Our modification prevented nonspecific interactions between MoAb and magnetic beads, and thereby saved expensive materials for purification. A total of 40 purifications were performed with samples containing a mean of 3.1 x 10(9) blood cells mobilized from 15 children by chemotherapy plus granulocyte colony-stimulating factor (G-CSF). The entire purification procedure, from the end of apheresis to storage, was completed within 5h. After incubation with PME and double-layered (40/60%) Percoll separation, the number of CD34+ cells was reduced to 48+/-29%, which suggests the possibility that half of the CD34+ cells in the inoculum were nonclonogenic in the hematopoietic progenitor assay. PME/Percoll-treated cells were then subjected to a final isolation procedure with MoAb according to the manufacturer's suggestions, and 52+/-42% and 32+/-22%, respectively, of the CFU-GM and CD34+ cells present in the initial bag inoculums were recovered. The recovery rates were, respectively, 54% and 67%, when the calculation was limited to the isolation procedure with MNoAb. The purity of isolated CD34+ cells and the plating efficiency in methylcellulose culture were, respectively, 77+/-24% and 33+/-13%. Fourteen children were subsequently autografted with purified CD34+ cells after marrow ablative chemotherapy. The median number of days to achieve an ANC of 0.5 x 10(9)/l was 12 and that to achieve a platelet count of 50 x 10(9)/l was 22.5, which were comparable to those in our historical group of 55 patients who underwent transplant with unmanipulated blood cells (13 and 16 days). These results suggest that our modified purification procedure with PME is useful for the initial reduction of cell numbers to save costly materials, and that cells isolated by this procedure can be directly used in clinical transplantation procedures.
journal_name
Bone Marrow Transplantjournal_title
Bone marrow transplantationauthors
Kawano Y,Takaue Y,Law P,Watanabe T,Abe T,Okamoto Y,Makimoto A,Sato J,Nakagawa R,Kajiume T,Hirao A,Watanabe A,Kuroda Ydoi
10.1038/sj.bmt.1701479subject
Has Abstractpub_date
1998-11-01 00:00:00pages
1011-7issue
10eissn
0268-3369issn
1476-5365journal_volume
22pub_type
临床试验,杂志文章abstract::The study was designed to determine whether the number of CD34+/CD33- cells given at autologous peripheral blood stem cell (PBSC) rescue after intensive therapy for cancer was a better predictor of platelet engraftment than the total number of CD34+ cells infused. Comparison between the total number of CD34+ cells/kg ...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1701368
更新日期:1998-09-01 00:00:00
abstract::Since approximately 30% of leukemia patients relapse after allogeneic BMT using total body irradiation (TBI)-based preparative regimens, treatment intensity may be suboptimal. The killing of leukemia cells is proportional to the radiation absorbed dose. We studied the feasibility and toxicity of escalating the doses o...
journal_title:Bone marrow transplantation
pub_type: 杂志文章,多中心研究
doi:10.1038/sj.bmt.1702230
更新日期:2000-04-01 00:00:00
abstract::Eight children underwent reduced-intensity stem cell transplantation (RIST) from an HLA-matched sibling. They received a fludarabine-melphalan based preparative regimen. Stem cell source was bone marrow, and GVHD prophylaxis consisted of cyclosporine A alone. Acute GVHD grade II-IV and grade III-IV were observed in fo...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1705285
更新日期:2006-03-01 00:00:00
abstract::Few studies have addressed the incidence of graft-versus-host disease (GVHD) or survival after ABO-incompatible allogeneic peripheral blood stem cell transplantation (PBSCT). We analyzed the clinical outcome of ABO incompatibility after allogeneic PBSCT. A total of 89 consecutive adult patients with hematological dise...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1704816
更新日期:2005-03-01 00:00:00
abstract::Over the past decade, relevant improvements and refinements have significantly changed the indications, technique and results obtained with allogeneic hematopoietic SCT (HSCT) in childhood. A fundamental turning point in the history of allogeneic HSCT is represented by the use of placental blood, which was first emplo...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/bmt.2008.45
更新日期:2008-06-01 00:00:00
abstract:SUMMARY:Hematopoietic chimerism (HpC) was assayed monthly using a sensitive, polymerase chain reaction (PCR) -based method in consecutive patients. Between January 1998 and April 2002, 181 patients underwent non-T cell depleted allogeneic hematopoietic cell transplantation (HCT). A total of 163 patients were evaluable ...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1704147
更新日期:2003-08-01 00:00:00
abstract::Plerixafor, a novel CXCR4 inhibitor, is effective in mobilizing PBSCs particularly when used in conjunction with G-CSF. In four cohorts, this pilot study explored the safety of plerixafor mobilization when incorporated into a conventional stem cell mobilization regimen of chemotherapy and G-CSF. Forty (26 multiple mye...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1038/bmt.2009.119
更新日期:2010-01-01 00:00:00
abstract::Conditioning therapy in connection with haematopoietic SCT (HSCT) induces a disruption of the intestinal barrier function facilitating the permeation of bacteria and endotoxin through the bowel wall with subsequent increased risk of septicaemia and a worsening of GVHD in the allogeneic setting. Palifermin (recombinant...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/bmt.2008.388
更新日期:2009-05-01 00:00:00
abstract::This study was designed to test the efficacy and toxicity of combining high-dose cytarabine (3 g/m2 every 12 h x 8 doses day -7 to day -4, total dose 24 g/m2), methyl prednisolone (0.5 mg/kg every 4 h day -7 to day -1), and cyclophosphamide (CY) (60 mg/kg day -3 and day -2) with either total body irradiation (TBI) (90...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:
更新日期:1990-05-01 00:00:00
abstract::AlloSCT is a potentially curative procedure for haematological malignancies and marrow failure syndromes. However, unlike leukaemia and lymphoproliferative disorders, AlloSCT has yet to find its place in the clinical management of patients with multiple myeloma. AlloSCT in multiple myeloma is associated with a high pr...
journal_title:Bone marrow transplantation
pub_type: 杂志文章,评审
doi:10.1038/bmt.2008.397
更新日期:2009-01-01 00:00:00
abstract::Immunological effects of IL-21 on T, B and natural killer (NK) cells have been reported, but the role of IL-21 in GVHD remains obscure. Here, we demonstrate that morbidity and mortality of GVHD was significantly reduced after BMT with splenocytes from IL-21R(-/-) mice compared with those from wild type mice. To furthe...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/bmt.2009.223
更新日期:2010-04-01 00:00:00
abstract::Chimerism studies after allogeneic BMT are performed to determine the donor and/or recipient origin of peripheral blood and marrow lymphoid and hematopoietic cells. These studies have been performed mostly in leukemias and aplastic anemia. We report DNA-based chimerism studies in three patients transplanted for advanc...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::Preparative regimens without total body irradiation (TBI) have been reported for alternative donor hemopoietic stem cell transplants (HSCT). Between 7 September 1994 and 7 June 1999 48 patients with advanced hematologic malignancies were conditioned with thiotepa (THIO) 15 mg/kg, cyclophosphamide (CY) 150 mg/kg and an...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1702719
更新日期:2000-12-01 00:00:00
abstract::The influence of the CFU-GM content of donor marrow on the outcome of allogeneic marrow transplantation (BMT) has been debated. We now report 38 patients (25 acute leukemias, 10 chronic myeloid leukemias, two myeloma; 24 in first CR/CP and 14 in more advanced phases of their disease) undergoing unmanipulated HLA-ident...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:
更新日期:1995-02-01 00:00:00
abstract::The treatment of established veno-occlusive disease (VOD) of the liver with tissue plasminogen activator (tPA) has been disappointing. In attempts to improve upon these results we identified a subgroup of patients with consistently elevated bilirubin levels who did not meet conventional criteria for VOD (Susp VOD) but...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章
doi:10.1038/sj.bmt.1702069
更新日期:1999-12-01 00:00:00
abstract::HSV can cause oral lesions that exacerbate chemotherapy-related mucositis. Intravenous acyclovir is effective in preventing HSV reactivations, but expensive. Valacyclovir has good bioavailability and has not been studied for prophylaxis of HSV among PCT patients. We compared the efficacy and costs of valacyclovir in p...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章
doi:10.1038/sj.bmt.1703354
更新日期:2002-02-01 00:00:00
abstract::This retrospective analysis compared two regimens of fludarabine combined with i.v. BU 6.4 mg/kg (FB2) or BU 12.8 mg/kg (FB4) for allografting of AML in first CR. A total of 437 patients (median age: 50 years) were administered FB2 (n = 225, 51%) or FB4 (n = 212, 49%). Median follow-up time was 28 months. Use of FB2 r...
journal_title:Bone marrow transplantation
pub_type: 杂志文章,多中心研究
doi:10.1038/bmt.2014.133
更新日期:2014-09-01 00:00:00
abstract::Extracorporeal photopheresis (ECP) was given to 23 patients with steroid-refractory acute GVHD (aGVHD, grade II (n=10), III (n=7) or IV (n=6)). The median duration of ECP was 7 months (1-33) and the median number of ECP cycles in each patient was 10. Twelve patients (52%) had complete responses. Eleven patients (48%) ...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/bmt.2008.221
更新日期:2008-11-01 00:00:00
abstract::Authors report a case of P. carinii pneumonia in a child with 5% CD4 lymphocytes (absolute number 5/microliters) after autologous bone marrow transplantation followed by pulmonary irradiation. Serial evaluation of CD4 lymphocyte count or percentage or, at least, detection of significant and persistent lymphopenia coul...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:
更新日期:1995-06-01 00:00:00
abstract::SCT from an HLA-compatible sibling donor is an adoptive immunotherapy for cytokine-refractory, metastatic clear-cell renal cell cancer (RCC). However, the recent introduction of targeted therapy compounds has reduced the interest in this therapeutic strategy. We have reanalyzed our series with the aim to assess long-t...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章
doi:10.1038/bmt.2009.9
更新日期:2009-08-01 00:00:00
abstract::To examine the effect of granulocyte colony-stimulating factor (G-CSF) on hematopoietic recovery after high-dose chemotherapy and peripheral blood progenitor cell transplantation (PBPCT), 20 patients with hematologic malignancies were divided into two groups. One group was given G-CSF at a daily dose of 50 micrograms/...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章
doi:
更新日期:1994-03-01 00:00:00
abstract::The objective of this study was to assess the pattern of change in salivary immunoglobulins and antibodies to S. mitis and S. oralis in 23 children following allogeneic bone marrow transplantation and their matched controls. To overcome the difficulty of obtaining a sufficient quantity of whole saliva from very young,...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1701968
更新日期:1999-09-01 00:00:00
abstract::Thirty-five patients with myelodysplastic syndromes (MDS) were treated with BMT between 1986 and 1994. Their median age was 41 years (range 23-60). Thirteen patients had transfusion-dependent refractory anaemia (RA). Twenty-two patients suffered from more advanced stages of MDS, 15 being in complete remission (CR) aft...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1700739
更新日期:1997-04-01 00:00:00
abstract::Community-acquired respiratory virus (RV) infections are an important cause of disease in immunocompromised adults with cancer. To investigate the viral etiology, incidence, clinical presentation, and outcome of RV infections in an outpatient cohort of adult bone marrow or peripheral blood stem cell transplant (SCT) r...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1704257
更新日期:2003-12-01 00:00:00
abstract::To determine the role of biomarkers in the clinical management of respiratory complications (RC) in hematopoietic stem cell transplantation (HSCT) recipients, we have prospectively evaluated a cohort of 175 patients followed-up for 1 year after HSCT. To avoid misinterpretation, we have excluded both unidentified respi...
journal_title:Bone marrow transplantation
pub_type: 临床试验,杂志文章
doi:10.1038/bmt.2016.280
更新日期:2017-03-01 00:00:00
abstract::Waldenström macroglobulinemia is a highly chemosensitive lymphoplasmacytic lymphoma with response rates of 90% to first-line chemotherapy. The fraction of patients undergoing stem cell transplant for this disorder appears to be lower than that of patients with multiple myeloma. The indolent nature and favorable geneti...
journal_title:Bone marrow transplantation
pub_type: 杂志文章,评审
doi:10.1038/bmt.2011.175
更新日期:2012-09-01 00:00:00
abstract::We have tested the immunologic status and hematologic parameters of mice 2 months (short-term survivors) or 18 months (long-term survivors) after lethal total body irradiation and syngeneic bone marrow transplantation (SBMT), and of normal mice of corresponding age. Long-term SBMT survivors showed significantly lowere...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::Successful stem cell mobilization and collection is possible in B-CLL after a favorable response to preceding chemotherapy, and also after treatment with the new nucleoside analogues fludarabine and cladribine. A poor response, on the other hand, seemed to predict a mobilization failure. CD34+ cell selection resulted ...
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/sj.bmt.1700730
更新日期:1997-04-01 00:00:00
abstract::Multiple clinical studies have been undertaken to evaluate the role of ABMT in relapse, in second and subsequent remission (CR greater than or equal to 2), and in first remission (CR1). The value of these high dose cytoreductive programs with ABMT is not yet known. No randomized studies have been done yet indicating t...
journal_title:Bone marrow transplantation
pub_type: 杂志文章,评审
doi:
更新日期:1989-01-01 00:00:00
abstract::We designed a phase I clinical trial of escalating doses of topotecan with CY and carboplatin in combination with autologous hematopoietic SCT (AHSCT) for the treatment of relapsed or persistent platinum sensitive ovarian or primary peritoneal carcinoma. After stem cell collection, 16 patients received topotecan at 1....
journal_title:Bone marrow transplantation
pub_type: 杂志文章
doi:10.1038/bmt.2009.181
更新日期:2010-03-01 00:00:00