Gene/Protein Disease Symptom Drug Enzyme Compound
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Patients with low-grade, follicular non-Hodgkin's lymphoma usually present with advanced disease, which is not considered curable with conventional therapies. New approaches are needed to improve the outcomes in patients with this disease. Yttrium 90 ibritumomab tiuxetan (Zevalin; Biogen Idec Inc, Cambridge, MA), is highly effective, with overall response rates of 73% to 83% and complete response rates of 15% to 51%, with a median duration of response in complete responders of 23 months. The response rates tend to be higher in patients who have been treated with fewer prior therapies, and (90)Y ibritumomab tiuxetan may be suitable for use early in the course of therapy. Delayed myelosuppression is the most common adverse effect, and it is predictable, reversible, and manageable. Yttrium 90 ibritumomab tiuxetan has less nonhematologic toxicity than chemotherapy, with only minimal alopecia, mucositis, nausea, or vomiting, and a lower incidence of infections. The ibritumomab tiuxetan regimen is routinely and safely given in an outpatient setting and is completed in 7 to 9 days, and is thus more convenient for patients than chemotherapy.
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PMID:Safety and efficacy of radioimmunotherapy with yttrium 90 ibritumomab tiuxetan (Zevalin). 1476 38

Most patients with non-Hodgkin's lymphoma (NHL) achieve remission but, despite newer drugs, the natural history of this disease has not improved during the last 20 years. Less than one half of patients with aggressive NHL are cured, and few of those with low-grade NHL are curable. Furthermore, NHL becomes progressively more chemoresistant while remaining responsive to external beam radiation therapy. Radioimmunotherapy (RIT) is a logical strategy for the treatment of NHL because this disease is multifocal and radiosensitive. Because of their remarkable effectiveness for RIT, 2 anti-CD20 monoclonal antibodies (mAbs), one labeled with (111)In for imaging or (90)Y for therapy and a second labeled with (131)I for imaging and therapy, have been approved for use in patients with NHL. These drugs have proven remarkably effective and safe. Evidence for the importance of the radionuclide is manifested by the data in the randomized pivotal phase III trial of (90)Y-ibritumomab that revealed response rates were several times greater in the (90)Y-ibritumomab arm than in the rituximab arm. A second drug for RIT, (131)I-tositumomab, was compared in a pivotal trial with the efficacy of the last chemotherapy received by each patient. Once again, response rates were much higher for RIT. Both (90)Y-ibritumomab and (131)I-tositumomab require preinfusion of several hundred milligrams of unlabeled anti-CD20 mAb to obtain "favorable" biodistribution, that is, targeting of NHL. Response rates for other mAbs and radionuclides in NHL also have been high but these drugs have not reached the approval stage. These drugs can be used safely by physicians who have suitable training and judgment. Unlike chemotherapy, RIT is not associated with mucositis, hair loss, or persistent nausea or vomiting. Although hematologic toxicity is dose limiting, hospitalization for febrile neutropenia is uncommon. Randomized trials of RIT in different formulations have not been conducted, but there is evidence to suggest that the mAb, antigen, radionuclide, chelator, linker, and dosing strategy may make a difference in the outcome.
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PMID:Treatment of non-Hodgkin's lymphoma (NHL) with radiolabeled antibodies (mAbs). 1609 94

The study was aimed to evaluate the effect of IEMAD (modified MIME) composed of isofosfamide, VM26 or VP16, methotrexate, cytarabine, dexamethasone or methylprednisolone, in treatment of refractory or relapsed non-Hodgkin's lymphoma. Twenty-five patients with refractory or relapsed non-Hodgkin's lymphoma (11 refractory NHL patients, 14 relapsed NHL patients) were treated with IEMAD regimen. The results showed that the complete remission rate was 24.0% (6/25) and the partial remission rate was 28.0%, having an overall response rate of 52%. The median survival duration was 13 months and the median duration of progression-free survival was 8 months. The most frequent complications were gastrointestinal complaint (nausea, vomiting etc.) and myelosuppression. No treatment related mortality was found. It is concluded that the IEMAD (modified MIME) regimen may be a safe and effective regimen that can be used in treatment of patients with refractory or relapsed non-Hodgkin's lymphoma who did not respond to other regimens.
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PMID:[IEMAD (modified MIME) therapy for refractory or relapsed non-Hodgkin's lymphoma]. 1663 1

We provide a global assessment, with detailed multi-scale data, of the ecological and toxicological effects generated by inorganic nitrogen pollution in aquatic ecosystems. Our synthesis of the published scientific literature shows three major environmental problems: (1) it can increase the concentration of hydrogen ions in freshwater ecosystems without much acid-neutralizing capacity, resulting in acidification of those systems; (2) it can stimulate or enhance the development, maintenance and proliferation of primary producers, resulting in eutrophication of aquatic ecosystems; (3) it can reach toxic levels that impair the ability of aquatic animals to survive, grow and reproduce. Inorganic nitrogen pollution of ground and surface waters can also induce adverse effects on human health and economy. Because reductions in SO2 emissions have reduced the atmospheric deposition of H2SO4 across large portions of North America and Europe, while emissions of NOx have gone unchecked, HNO3 is now playing an increasing role in the acidification of freshwater ecosystems. This acidification process has caused several adverse effects on primary and secondary producers, with significant biotic impoverishments, particularly concerning invertebrates and fishes, in many atmospherically acidified lakes and streams. The cultural eutrophication of freshwater, estuarine, and coastal marine ecosystems can cause ecological and toxicological effects that are either directly or indirectly related to the proliferation of primary producers. Extensive kills of both invertebrates and fishes are probably the most dramatic manifestation of hypoxia (or anoxia) in eutrophic and hypereutrophic aquatic ecosystems with low water turnover rates. The decline in dissolved oxygen concentrations can also promote the formation of reduced compounds, such as hydrogen sulphide, resulting in higher adverse (toxic) effects on aquatic animals. Additionally, the occurrence of toxic algae can significantly contribute to the extensive kills of aquatic animals. Cyanobacteria, dinoflagellates and diatoms appear to be major responsible that may be stimulated by inorganic nitrogen pollution. Among the different inorganic nitrogenous compounds (NH4+, NH3, NO2-, HNO2NO3-) that aquatic animals can take up directly from the ambient water, unionized ammonia is the most toxic, while ammonium and nitrate ions are the least toxic. In general, seawater animals seem to be more tolerant to the toxicity of inorganic nitrogenous compounds than freshwater animals, probably because of the ameliorating effect of water salinity (sodium, chloride, calcium and other ions) on the tolerance of aquatic animals. Ingested nitrites and nitrates from polluted drinking waters can induce methemoglobinemia in humans, particularly in young infants, by blocking the oxygen-carrying capacity of hemoglobin. Ingested nitrites and nitrates also have a potential role in developing cancers of the digestive tract through their contribution to the formation of nitrosamines. In addition, some scientific evidences suggest that ingested nitrites and nitrates might result in mutagenicity, teratogenicity and birth defects, contribute to the risks of non-Hodgkin's lymphoma and bladder and ovarian cancers, play a role in the etiology of insulin-dependent diabetes mellitus and in the development of thyroid hypertrophy, or cause spontaneous abortions and respiratory tract infections. Indirect health hazards can occur as a consequence of algal toxins, causing nausea, vomiting, diarrhoea, pneumonia, gastroenteritis, hepatoenteritis, muscular cramps, and several poisoning syndromes (paralytic shellfish poisoning, neurotoxic shellfish poisoning, amnesic shellfish poisoning). Other indirect health hazards can also come from the potential relationship between inorganic nitrogen pollution and human infectious diseases (malaria, cholera). Human sickness and death, extensive kills of aquatic animals, and other negative effects, can have elevated costs on human economy, with the recreation and tourism industry suffering the most important economic impacts, at least locally. It is concluded that levels of total nitrogen lower than 0.5-1.0 mg TN/L could prevent aquatic ecosystems (excluding those ecosystems with naturally high N levels) from developing acidification and eutrophication, at least by inorganic nitrogen pollution. Those relatively low TN levels could also protect aquatic animals against the toxicity of inorganic nitrogenous compounds since, in the absence of eutrophication, surface waters usually present relatively high concentrations of dissolved oxygen, most inorganic reactive nitrogen being in the form of nitrate. Additionally, human health and economy would be safer from the adverse effects of inorganic nitrogen pollution.
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PMID:Ecological and toxicological effects of inorganic nitrogen pollution in aquatic ecosystems: A global assessment. 1678 74

Primary intestinal lymphoma with spontaneous perforation and after systemic chemotherapy is rare. The present study summarizes retrospectively the outcome of eight free intestinal perforated patients diagnosed with intestinal non-Hodgkin's lymphoma. Two patients had a history of systemic chemotherapy before perforation. The most common symptoms of the patients were abdominal pain, nausea, vomiting, weight loss, and fever. Sites of perforation were ileum in four, jejunum in two, cecum in one, and sigmoid colon in one patient. Synchronous lymphoma was present in three patients. The perforation was closed by primary closure in three patients. Resection/anastomosis was performed in four patients and sigmoid colostomy was performed in one patient. Three patients were lost due to leakage or septicemia. Intestinal lymphoma might be kept in mind as a cause in free intestinal perforations. Because of the high mortality rate early diagnosis and treatment are important to improve the prognosis of bowel perforation in patients with non-Hodgkin's lymphoma.
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PMID:Spontaneous intestinal perforation due to non-Hodgkin's lymphoma: evaluation of eight cases. 1742 Sep 36

Patients who undergo autologous peripheral blood stem cell (PBSC) transplantation experience multiple symptoms that adversely affect quality of life. We assessed symptoms during the acute phase of autologous PBSC transplantation to determine the severity of individual symptoms and to determine overall symptom profiles in 100 patients with multiple myeloma or non-Hodgkin's lymphoma. Study subjects completed the blood and marrow transplantation module of the M. D. Anderson Symptom Inventory before hospitalization, during conditioning, on day of transplantation, at nadir (the time of lowest white blood cell count) and on day 30 post-transplantation. Additional symptom, quality-of-life and medical status measures were collected. Symptom means were mild at baseline, intensified during conditioning, peaked at nadir and decreased by day 30. At nadir, the most severe symptoms for the entire patient sample were lack of appetite, fatigue, weakness, feeling sick, disturbed sleep, nausea and diarrhea. Cancer diagnosis was a significant predictor of changes in symptoms over time. The patterns of fatigue, pain, sleep disturbance and lack of appetite were significantly different for patients with multiple myeloma as compared with patients with non-Hodgkin's lymphoma.
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PMID:Symptom burden in patients undergoing autologous stem-cell transplantation. 1743 88

The treatment of choice for relapsed/refractory non-Hodgkin's lymphoma (NHL) consists of high-dose chemotherapy (HDC) followed by autologous stem cell transplantation (ASCT). Little is known, however, regarding the comparative toxicity and efficacy of various HDC regimens applied in NHL. We have retrospectively evaluated the clinical aspects of the BCNU, etoposide, cytarabine, and cyclophosphamide (BEAC) and BCNU, etoposide, cytarabine, and melphalan (BEAM) regimens for ASCT. Between April 1994 and February 2005, 97 NHL patients underwent HDC with BEAC (N = 69) or BEAM (N = 28), followed by ASCT, at the Asan Medical Center. We matched each BEAM patient with two BEAC patients having the same International Prognostic Index. Thus, 84 patients (56 BEAC and 28 BEAM) were analyzed. Median age was 40.5 years, and baseline characteristics were well balanced between the two groups. The median time to neutrophil engraftment (>500/mm(3)) was significantly longer with BEAC than with BEAM (12 vs 11 days, P = 0.001), as was the total amount of red blood cell transfusion (6.5 vs 3.7U, P = 0.037), but the median time to platelet engraftment (>20,000/mm(3)) and the total amount of platelet transfusion did not differ between the two groups. BEAM patients had significantly more frequent World Health Organization grade greater than or equal to 2 diarrhea than BEAC patients (46.4 vs 19.6%, P = 0.010), but the incidence of mucositis, nausea/vomiting, and bleeding and the number of episodes of febrile neutropenia and septicemia did not differ between the two groups. Median follow-up for survivors was 33 months in the BEAM group and 89 months in the BEAC group. Median overall survival and median event-free survival were not reached in the BEAM group and were 7.9 (95% confidence interval [CI], 1-14.8 months, P = 0.003) and 3.7 months (95% CI, 0.1-7.2 months, P = 0.001), respectively, in the BEAC group. BEAM appeared to be superior to BEAC for survival. Regimen-related toxicities were similar, except that BEAM was associated with more frequent but acceptable diarrhea.
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PMID:BEAC or BEAM high-dose chemotherapy followed by autologous stem cell transplantation in non-Hodgkin's lymphoma patients: comparative analysis of efficacy and toxicity. 1771 Apr 1

This study assessed the efficacy and safety of dolasetron compared with ondansetron for the prevention of nausea and vomiting during high-dose myeloablative chemotherapy followed by peripheral blood stem cell support. Twenty centers randomized 197 patients to receive dolasetron 100 mg intravenously (I.V.) followed 8-12 hours later by a single oral dose of dolasetron 100 mg or ondansetron 32 mg I.V., followed 8-12 hours later by a single oral dose of ondansetron 8 mg during high-dose chemotherapy (HDC) regimens for breast cancer (n = 96; 48.7%), non-Hodgkin's lymphoma (n = 83; 42.1%), or Hodgkin's disease (n = 18; 9.1%). All patients received a daily I.V. bolus of dexamethasone 10 mg with study antiemetic agents and a continuous infusion of diphenhydramine, lorazepam, and dexamethasone (ie, BAD pump) throughout the course of the study, with patient-controlled on-demand bolus doses as needed. After completing a daily diary of emetic episodes and rescue medication use, 164 of 197 patients were evaluable. Total plus complete responses (no emesis, no nausea, no rescue) over the entire study period were achieved in 45.7% and 46.9% of patients on the dolasetron and ondansetron arms, respectively. Dolasetron and ondansetron were well-tolerated. This study demonstrates that dolasetron and ondansetron are equally safe and effective in the prevention of nausea and vomiting associated with HDC (P = 0.955).
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PMID:A randomized, multicenter, open-label comparison of the antiemetic efficacy of dolasetron versus ondansetron for the prevention of nausea and vomiting during high-dose myeloablative chemotherapy. 1862 98

We investigated the efficacy and toxicity of combining granulocyte-colony stimulating factor (G-CSF) at standard doses with plerixafor, a CXCR4 inhibitor, to mobilize stem cells in patients with non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM). Patients with NHL and MM underwent mobilization with G-CSF (10 microg/kg/day) for up to 9 days and plerixafor (240 microg/kg/day), which started on the evening of day 4. Apheresis began on day 5 and continued daily until either >or= 5 x 10(6) CD34/kg were collected or to a maximum of 5 aphereses. Toxicities, increase in circulating CD34 cells/microL before and after the first dose of plerixafor, percentage of patients collecting >or= 5 x 10(6) CD34/kg, total CD34 cells/kg collected, engraftment, and exploratory efficacy analyses in heavily pretreated patients were examined. Six sites enrolled 49 patients (NHL, 23; MM, 26). All completed mobilization and 47 of 49 (96%) underwent transplant. Circulating CD34 cells/microL increased by 2.5-fold (1.3-6.0-fold) after the first plerixafor dose. The median CD34 cells/kg collected was 5.9 x 10(6) (1.5-22.5) in 2 (1-5) days of aphereses. Median days to neutrophil and platelet engraftment were 11 (8-16) and 14.5 (7-39) days, respectively. Adverse events primarily were mild nausea and diarrhea (n=24). Twenty-eight (57%) were identified as heavily pretreated patients. Their median fold increase in circulating CD34 cells/microL was 2.5 (1.4-5.0) after plerixafor, similar to minimally pretreated patients. Plerixafor and G-CSF increased circulating CD34 cells/microL and led to the adequate collection of stem cells for autotransplant in 96% of the patients. This combination may have particular value in heavily pretreated patients.
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PMID:Treatment with plerixafor in non-Hodgkin's lymphoma and multiple myeloma patients to increase the number of peripheral blood stem cells when given a mobilizing regimen of G-CSF: implications for the heavily pretreated patient. 1916 85

High-dose chemotherapy with autologous SCT has become standard of care for patients with relapsed aggressive non-Hodgkin's lymphoma (NHL). To improve safety and efficacy of this treatment, new conditioning regimens are being developed. We retrospectively reviewed clinical data of patients with relapsed NHL treated at our institution with i.v. BU and CY (BU/CY) as conditioning regimen for autologous SCT between January 2000 and April 2005. We identified 43 patients (24 men, 19 women, median age 50) with diffuse large B-cell lymphoma (n=28), follicular lymphoma (n=8), mantle cell lymphoma (n=4) and peripheral T-cell lymphoma (n=3). Following salvage chemotherapy, there were 26 complete responses, 13 partial responses and 4 stable diseases. Median time to neutrophil and platelet recovery was 11 and 13.5 days, respectively. Treatment-related toxicities included nausea/vomiting, diarrhea and mucositis. The 100-day mortality was 9%: sepsis (n=1), pneumonia (n=1) and hepatic veno-occlusive disease (n=2). Twenty-one patients were followed until death and twenty-one surviving patients were followed for a median of 29 months (range 0.4-76). Three-year estimates of event-free survival, progression-free survival and overall survival were 35, 39 and 43%, respectively. We conclude that i.v. BU/CY is a safe and effective conditioning regimen for autologous SCT in relapsed NHL.
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PMID:Autologous transplantation for relapsed non-Hodgkin's lymphoma using intravenous busulfan and cyclophosphamide as conditioning regimen: a single center experience. 1916 87


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