Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.1.1.69 (BMT)
 2,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Fever after bone marrow transplantation may indicate the onset of bacterial or opportunistic infection, or acute graft-versus-host disease (GVHD). In an attempt to differentiate between infection and GVHD, we prospectively studied 41 bone marrow transplants in 38 patients (24 allogeneic, 17 autologous). Elevation of C-reactive protein (CRP) proved to be a good indicator of disseminated infections. In 40 episodes of documented (11) or presumed (29) sepsis, CRP rose above 5 mg/dl in 38 episodes (95%), and above 10 mg/dl in 32 episodes (80%). The CRP concentration paralleled the clinical course of the infectious episodes. Elevated CRP values were not observed in the 15 episodes of acute GVHD without concurrent infection. High peak values of serum total IgE, ranging from 4-fold to over 4000-fold baseline, were observed posttransplant in 18/22 allogeneic BMT recipients, temporally associated with activation of acute GVHD. IgE was elevated neither in episodes of sepsis without concurrent GVHD, nor in viral or focal bacterial infections. In general, septic infections were characterized by high CRP but low IgE levels. Acute GVHD without concurrent infection was characterized by high IgE but low CRP. We conclude that CRP and serum total IgE utilized together in serial fashion are helpful in distinguishing sepsis from acute GVHD.
 ...
PMID:Differentiation of presumed sepsis from acute graft-versus-host disease by C-reactive protein and serum total IgE in bone marrow transplant recipients. 331 43

The benefits of fungal prophylaxis with fluconazole in BMT patients appear to outweigh the risks of a possible increase in colonization and infection by C. krusei or T. glabrata. Disseminated fungal infections caused by C. tropicalis and C. albicans have a 38.8% mortality rate, and these infections may be prevented by the prophylactic use of fluconazole. C. krusei and T. glabrata infections generally do not contribute to increased mortality, and most patients infected by these organisms recover after appropriate antifungal therapy. The use of amphotericin B as prophylaxis may have some efficacy. One retrospective study found low-dose amphotericin B therapy to be effective in preventing Candida infections, but results from a placebo-controlled, randomized prospective trial with 0.1 mg/kg/d failed to support this claim. Low-dose amphotericin B prophylaxis (0.1-0.25 mg/kg/d) shows promise against aspergillosis, an opportunistic infection associated with high morbidity and mortality. The literature suggests the possible value of using oral or intravenous fluconazole 200-400 mg/d or intravenous amphotericin B 0.1-0.25 mg/kg/d as antifungal prophylaxis in patients after autologous or allogeneic BMT. Many questions remain unanswered, however. These studies described the potential decrease in morbidity and mortality of BMT patients with the use of either fluconazole or amphotericin B, but it is not known whether all patients after BMT or only those at high risk of fungal infection may benefit from prophylaxis. Optimal dosing of either antifungal agent has not been defined in the studies. Clinicians should be aware of the possible increase in colonization by less pathogenic fungal species, such as C. krusel and T. glabrata, when prescribing fluconazole prophylaxis.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Antifungal prophylaxis in bone marrow transplant. 854 42

Allogeneic BMT from histocompatible-related and -unrelated donors can provide curative therapy for a variety of hematologic, oncologic, immunologic and hereditary diseases. Obstacles to successful outcome of allogeneic BMT include GVHD, disease relapse, opportunistic infection and toxicity of the conditioning and GVHD prophylaxis regimens. As these problems are surmounted, the number of BMT survivors is expected to steadily increase and the QOL post-BMT will become as important as the duration of survival in evaluating the outcome of allogeneic BMT. High-dose chemotherapy or chemoradiotherapy, followed by ABMT or autologous peripheral blood stem cell transplant has been shown to produce long-term, disease-free survival in patients with relapsed, refractory and poor-risk HD and NHL. Despite the success of ABMT and PBSCT in treating these diseases, the short- and long-term transplant-related mortality continues to be a major concern and mandates exploration of new approaches to reduce acute and delayed fatal toxicities. ABMT as post-remission therapy for adult AML has yielded results similar to those achieved with allogeneic BMT. The role of bone marrow purging and posttransplant immunomodulation in preventing disease relapse after ABMT is being investigated.
 ...
PMID:Bone marrow transplantation: the City of Hope experience. 879 75

Carboplatin and melphalan are two drugs whose toxicity profile makes them suitable for use in high doses followed by stem cell rescue. We report the use of high-dose carboplatin, with the dose based on glomerular filtration rate (GFR), combined with melphalan followed by autologous stem cell rescue in children with advanced stage or chemoresistant solid tumours. Thirty children were treated. After multiagent induction chemotherapy before BMT, 13 were in CR, five in VGPR, 11 in PR and one had progressive disease. They received melphalan, 180 mg/m2 and carboplatin, followed by autologous stem cell rescue. The dose of carboplatin was varied by GFR rather than fixed by surface area. The dose given ranged from 0.7 to 2.6 g/m2. Haematological and gastrointestinal toxicities were severe. Life-threatening or fatal toxicity was attributable to opportunistic infection in two cases and regimen-related in two cases. Of the 30 patients, 15 are alive and 13 disease-free at 4-36 months post-BMT. This simple two-drug combination has been used as consolidation of initial remission for patients with high-risk tumours. The toxicity is severe but tolerable. Use of a carboplatin dose based on GFR should optimise effectiveness in patients with good renal function and avoid excessive toxicity where renal function is impaired.
 ...
PMID:Melphalan combined with a carboplatin dose based on glomerular filtration rate followed by autologous stem cell rescue for children with solid tumours. 897 71

Opportunistic infections have been a problem after BMT in CLL. We have allografted seven patients with B-CLL (n = 6) or B-prolymphocytic leukemia (n = 1) from matched siblings (n = 6) or a mismatched unrelated donor (n = 1). Amongst the first six, we saw two cases of recurrent or prolonged cytomegaloviremia and CMV disease, one listeria meningitis, and one fatal toxoplasma encephalitis. The latter two developed in the setting of steroid therapy of GVHD with extensive prior fludarabine therapy. Prophylaxis for opportunistic infections was developed on an ongoing basis as new infectious complications were seen. The current drug prophylaxis, which has been successful for eight months in the last patient despite pretreatment with fludarabine and steroid therapy for GVHD, is directed against pneumocystis, toxoplasma, fungi, and pneumococci. It includes immunoglobulin (for 3 1/2 months), pyrimethamine-sulfadiazine (for 4 months and during steroids), fluconazole (for 2 1/2 months), cotrimoxazole or pentamidine (for 2 years) and penicillin (lifelong). Dietary precautions are followed for 4 months and during steroids to prevent listeriosis. Four patients are alive in remission with no active infectious problems 8-44 months (median 29) after BMT. We recommend adoption of these or similar prophylactic measures for BMT in CLL as a baseline which can be modified if new infections are identified and according to individual needs.
 ...
PMID:Antimicrobial prophylaxis to prevent opportunistic infections in patients with chronic lymphocytic leukemia after allogeneic blood or marrow transplantation. 925 Jul 91

The relative benefit of allogeneic bone marrow transplantation (alloBMT) vs autologous BMT (autoBMT) for patients with relapsed or refractory Hodgkin's disease (HD) or non-Hodgkin's lymphoma (NHL) remains uncertain. Toxicity from graft-versus-host disease (GVHD) may diminish the potential benefits both of graft-versus-tumor activity and of receiving uncontaminated donor marrow stem cells. From 1987 to 1995, 27 adults (ages 18-60 years; median 36) underwent alloBMT for lymphoma after failure of standard chemotherapy. Twenty-one had NHL and six had HD (nodular sclerosis). Thirteen patients had primary refractory disease or chemotherapy-resistant relapses; two of these had relapsed after autoBMT. Three patients had untested relapses (one of them had relapsed after autoBMT), and 11 had chemotherapy-sensitive relapses. Twenty-four received HLA-matched bone marrow from a sibling (one twin); three received haploidentical marrow cells. Nine (33%) died from lymphoma. Eleven (41%) died of treatment-related causes. Opportunistic infections were a substantial problem leading to eight of these deaths (30%). Six patients (22%) survive free of lymphoma 17-70 months post-BMT (median, 56 months); four had had sensitive relapses, one had had a resistant relapse, and one had had nontested relapse. Three have chronic GVHD (limited in one; extensive in two). One HD patient who had relapsed after autoBMT remains in remission 19 months after alloBMT. No therapy-related myelodysplasia has been observed. We conclude that alloBMT has substantial morbidity in heavily pretreated lymphoma patients due to acute toxicity, infections and GVHD. However, 22% of our HD/NHL patients have had long-term disease-free survival.
 ...
PMID:Allogeneic bone marrow transplantation for relapsed and refractory Hodgkin's disease and non-Hodgkin's lymphoma. 933 51