Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UNIPROT:Q06643 (non-Hodgkin's lymphoma)
 11,307 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Bone marrow aspirates are composed of two cellular compartments, an abundant buffy coat suspension and a minor particulate fraction. The particulate fraction is routinely removed by filtration prior to transplantation in order to reduce the risk of embolism. This study shows that the filter-retained fraction includes many multicellular complexes, previously defined as haematons. A haematon is a finely arborized stromal-web which is tightly packed with haemopoietic progenitor cells and differentiated postmitotic cells. Comparison of the pooled buffy coat and the filter-retained materials from healthy donors showed that the haematon fraction contained 8-40 x 10(6) CD34+ cells, 20-115 x 10(3) high proliferative potential colony-forming cells (HPP-CFC) and 0.49-2.67 x 10(6) granulocyte-macrophage colony-forming unit (GM-CFU) which constituted 24+/-8% (10-36; n=8) of the total GM-CFU population harvested. Similar, but more variable recoveries of GM-CFU were obtained from the haematon fractions from patients with breast cancer (21+/-13%; n=10), Hodgkin's disease (33+/-19%; n=4), non-Hodgkin's lymphoma (21+/-18; n=7), but the recovery was lower from patients with acute myelogenous leukaemia (AML) (13+/-13%; n=6). The haematon fraction was enriched in CD34+ cells (2.5-fold), long-term culture initiating cells (LTC-IC/CAFC, week 5) (3.5-fold), HPP-CFC (2.8-fold) and GM-CFU (2.3-fold) over the buffy coat. Purified CD34+ cells expanded exponentially and produced 800 to 4000-fold more nucleated cells, 300 to 3500-fold more GM-CFU and 10 to 80-fold more HPP-CFC in stroma-free suspension culture with interleukin-1 (IL-1beta), IL-3, IL-6, GM-CSF and stem cell factor (SCF), than did the starting cell input. The haematon fraction produced significantly more progenitor cells than the buffy coat in long-term liquid culture (LTC). This was due to the higher frequency of LTC-IC/CAFC and to the presence of the whole spectrum of native, stroma cell-associated CAFC in haematons. Thus, the haematon includes the most productive haematogenous compartment in human BM. This simple enrichment strategy, using filter-retained haematons, provides a rational source of BM cells for large scale experimental and/or clinical studies on haemopoietic stem cells and on critical accessory stromal cells.
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PMID:Large scale recovery and characterization of stromal cell-associated primitive haemopoietic progenitor cells from filter-retained human bone marrow. 1021 40

The effects of granulocyte-colony stimulating factor (G-CSF) have been studied in several clinical settings. G-CSFs are widely used to stimulate the production of granulocytes and are well known to mobilize peripheral blood stem cells (PBSCs). However, very few studies have examined differences among G-CSFs. The aim of this study was to compare the mobilization of PBSCs induced by a standard dose of two G-CSFs following biweekly cyclophosphamide, doxorubicin, vincristine and prednisone (CHOP) therapy. Using a standard dose of G-CSF, we conducted a randomized, crossover trial that compared the efficacy of two kinds of G-CSF, glycosylated [lenograstim (2 micrograms/kg)] and mutated [nartograstim (1 microgram/kg)], on PBSC mobilization in 10 patients with non-Hodgkin's lymphoma after biweekly CHOP chemotherapy. Lenograstim (2 micrograms/kg) was more effective in shortening the duration of neutropenia than nartograstim (1 microgram/kg) (3.8 days vs. 5.0 days, p < 0.05, the number of days for the neutrophil count to reach 5 x 10(9)/l from nadir). The number of CD34+ cells and granulocyte-macrophage colony forming units (GM-CFU) was higher for lenograstim but no statistically significant difference between the two groups was found. Glycosylated G-CSF is more effective than mutated G-CSF in shortening the duration of neutropenia. As for the mobilization of CD34+ cells and the number of CFU-GM, there was a tendency to increase in the lenograstim group but no statistically significant differences were found.
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PMID:Mobilization of peripheral blood stem cells by granulocyte-colony stimulating factors: comparison of a standard dose of glycosylated and mutated granulocyte-colony stimulating factor in non-Hodgkin's lymphoma patients following CHOP therapy. 1076 30

The yield of CD34+ PBPC and colony-forming units-granulocyte-macrophage (CFU-GM) in leukapheresis products and the expression of the adhesion molecules CD11a, CD31, CD49d, CD49e, CD54, CD58, CD62L, c-kit (CD117), Thy-1 (CD90), CD33, CD38, and HLA-DR on CD34+ PBPC were analyzed in patients with cancer of the testis (n = 10), breast cancer (n = 10), Hodgkin's disease (n = 20), high-grade (n = 20) and low-grade (n = 20) non-Hodgkin's lymphoma, and healthy donors (n = 20) undergoing G-CSF (filgrastim)-stimulated PBPC mobilization. For each disease entity, G-CSF was administered in two different doses, 10 microg G-CSF/kg body weight (BW)/day s.c. vs. 24 microg G-CSF/kg BW s.c./day in steady-state condition. Data were compared for each dose group separately. Patients with cancer of the testis and breast cancer mobilized significantly more CD34+ cells than patients with high-grade and low-grade non-Hodgkin's lymphoma and Hodgkin's disease (p<0.05). Correspondingly, expression of CD49d on CD34+ PBPC was significantly lower in the same patients with cancer of the testis compared with high-grade and low-grade non-Hodgkin's lymphoma and Hodgkins' disease and in patients with breast cancer compared with high-grade and low-grade non-Hodgkin's lymphoma, Hodgkins's disease, and healthy donors. Similar results were obtained for CD49e. These data suggest that the expression of the adhesion molecules CD49d and CD49e on G-CSF-mobilized CD34+ cells of patients with solid tumors, non-Hodgkin's lymphoma, Hodgkin's disease, and healthy donors is inversely correlated with the amount of mobilized CD34+ cells.
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PMID:Expression of the adhesion molecules CD49d and CD49e on G-CSF-mobilized CD34+ cells of patients with solid tumors or non-Hodgkin's and Hodgkin's lymphoma and of healthy donors is inversely correlated with the amount of mobilized CD34+ cells. 1079 4

Large volumes of peripheral blood need to be processed to obtain sufficient stem cells for hematopoietic rescue after myeloablation, and more than one leukapheresis is necessary in most patients. We conceived the feasibility of harvesting sufficient numbers of hematopoietic cells from the whole blood, obtainable by venaepunctures, of patients treated with a standard dose chemotherapy regimen for high-grade non-Hodgkin's lymphoma. We evaluated the kinetics of mobilization, amount and quality of hematopoietic cells released into circulation during VACOB-B chemotherapy (which consists of a 12-week program), and G-CSF in 6 patients with aggressive non-Hodgkin's lymphoma. The median number of granulocyte-macrophage colony-forming cells (GM-CFC) x 10(3)/ml of blood (range), were 1.9 (0.3-8), and 1.16 (0.2-3.2) after the 7th and 11th weekly dose of drugs, respectively, showing an increase of 19- and 12-fold over patients' prechemotherapy values and of 53- and 33-fold over normal controls (p < 0.001). The median number of CD34+ cells x 10(3)/ml of blood (range), at the 7th and 11th cycle, was 135 (53.7-240.9) and 79.8 (69-173.5), respectively, showing an increase of 10- and 13-fold over patients prechemotherapy values (p < or = 0.04) and of 300- and 179-fold over normal controls (p < or = 0.001). Long-term culture initiating cells (LTC-IC) were released into circulation together with hematopoietic progenitors. We estimated that 1 liter of peripheral blood could yield on average 1.8 x 10(6)/kg CD34+ cells and 2 x 10(4)/kg GM-CFC with LTC-IC frequency comparable to a bone marrow harvest. These figures may be considered sufficient for hematopoietic rescue after myeloablation or hematopoietic support after high-dose chemotherapy.
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PMID:Transplantation potential of peripheral whole blood primed by VACOP-B chemotherapy plus filgrastim (r-metHuG-CSF) in patients with aggressive non-Hodgkin's lumphoma. 1109 81

We designed a randomized, prospective three-arm mobilization study to determine the kinetics of peripheral blood stem cell (PBSC) mobilization in 60 non-Hodgkin's lymphoma (NHL) patients primed with cyclophosphamide (CTX) in combination with granulocyte colony-stimulating factor (G-CSF) (arm A), granulocyte-macrophage (GM)-CSF (arm B) or GM-CSF/G-CSF (arm C). We also compared mobilization and transplant-related toxicities, pre- and post-transplant support and the probability of survival among the three arms. To date, 35 patients have been enrolled in the study; 13 patients have been enrolled in arm A, 10 patients in arm B, and 13 patients in arm C. Successful collection of the target of > or = 2 X 10(6) CD34+ cells/kg in one to four apheresis collections was 10/13, 6/10, and 7/12 in arms A, B, and C, respectively. The differences between arms were not statistically significant. The median time to achieve the target CD34+ cells in patients who successfully mobilized the target CD34+ cells was 3 days, 2 days, and 1 day, in patients in arms A, B, and C, respectively. The time for neutrophil engraftment was 11, 10, and 10 days in arms A, B, and C, respectively. The time for platelet engraftment was 11 days for patients in all arms of the study. Most importantly, no significant differences were observed among the three arms in the duration of neutropenic fever, the extent of mucositis, diarrhea, and nausea/vomiting, or in the number of units of platelets or red cells transfused after transplantation. Risk factors associated with poor mobilization were > or = 3 regimens of chemotherapy prior to mobilization, older age, and disease histology (follicular versus diffuse). Therefore, we conclude that the type of growth factor used for mobilization did not play a major role in the outcome of mobilization and recommend mobilizing NHL patients before they receive multiple regimens of chemotherapy.
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PMID:Peripheral blood stem cell mobilization with cyclophosphamide in combination with G-CSF, GM-CSF, or sequential GM-CSF/G-CSF in non-Hodgkin's lymphoma patients: a randomized prospective study. 1109 98

The distribution and functional characteristics of in vitro bone marrow (BM) endothelial colonies (CFU-En) were studied in 70 non-Hodgkin's lymphoma (NHL) patients in different phases of the disease to explore the association between CFU-En growth and angiogenesis, and between the number of CFU-En and the presence of hematopoietic and mesenchymal progenitor cells. The mean number of CFU-En/10(6) BM mononuclear cells seen in remission patients was significantly higher than that seen in newly diagnosed patients (P=0.04), and in normal subjects (P=0.008). Patients with low-grade NHL in remission displayed a higher CFU-En value compared with high-grade NHL (P=0.04). In the autograft group (40 patients), a significant reduction of CFU-En number was detected in the first 4-6 months after transplantation. In remission patients, the CFU-En number positively correlated with the incidence of BM colony-forming unit granulocyte-macrophage (CFU-GM) (P=0.013) and CFU-multilineage (CFU-GEMM) hematopoietic colonies (P=0.044). These in vitro data show that CFU-En numbers increase following standard-dose chemotherapy, thus providing a rationale for further investigating the effects of different cytostatic drugs on BM endothelial cells growth and function.
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PMID:In vitro assessment of bone marrow endothelial colonies (CFU-En) in non-Hodgkin's lymphoma patients undergoing peripheral blood stem cell transplantation. 1464 71

Chemotherapy-associated neutropenia is often dose-limiting and may compromise treatment efficacy. Granulocyte colony-stimulating factor (G-CSF) and granulocyte-macrophage-colony-stimulating factor (GM-CSF) are increasingly used to prevent febrile neutropenia (FN) or to increase dose-density. This review discusses recent changes in treatment guidelines for chemotherapy-associated neutropenia. Primary prophylactic use of CSFs is now recommended as a treatment option at an overall risk of FN of 20%, not taking into account cost-effectiveness. To estimate the risk of FN, patient-, disease-, and treatment-related factors predicting an adverse outcome of FN have been determined. Dose-dense chemotherapy has become feasible with the use of CSFs. However, clinical benefit has been shown only for specific chemotherapy regimens in breast cancer, small cell lung cancer (SCLC), and non-Hodgkin's lymphoma (NHL), for the latter particularly for patients above 60 years of age. Strategies are being developed to tailor the use of CSFs to patients with a high risk of adverse outcome of FN.
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PMID:Use of colony-stimulating factors for chemotherapy-associated neutropenia: review of current guidelines. 1763 Nov 79


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