Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027651 (tumor)
 685,946 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The approach we have followed in developing treatment strategies for lymphoma consists of testing new combinations in patients with recurrent disease and, if these are found to be effective, advancing them to front-line therapy. Three series of salvage regimens tested at the M. D. Anderson Cancer Center (MDACC) will be described. These were initially based on ifosfamide/etoposide, later on high-dose cytarabine/cisplatin, and more recently on a novel strategy that first uses MINE (mesna/ifosfamide/Novantrone [mitoxantrone; Lederle International, Wayne, NJ]/etoposide) for induction of remission and, following the attainment of the maximum response to MINE, changes treatment to a non--cross-resistant combination known as ESHAP (etoposide/Solu-medrol ([methylprednisolone]/high-dose cytarabine/cisplatin). The front-line management of intermediate-grade lymphoma at MDACC currently is based on prognostic factors. The criteria for selecting categories of less favorable patients will be discussed. A new regimen, alternating triple therapy based on three non--cross-resistant drug regimens, currently is being explored for these patients. Already this regimen has shown an early advantage in the worst category of cases, those with M.D. Anderson stage D (high tumor burden, high levels of lactate dehydrogenase). The data, however, remain preliminary.
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PMID:Non-Hodgkin's lymphomas: a review of the M.D. Anderson experience. 138 34

Urinary excretion of parathyroid hormone-related protein (PTH-rP) was measured by radioimmunoassay in 25 patients with adult T-cell leukemia (ATL), in 68 patients with other hematologic disorders and in 13 asymptomatic individuals seropositive for human T-cell leukemia virus type I (HTLV-I). The mean levels of urinary PTH-rP in ATL patients with hypercalcemia (11.01 micrograms/g.Cr) were higher than in ATL patients with normocalcemia (5.16 micrograms/g.Cr). The mean levels in patients with acute type (8.84 micrograms/g.Cr), lymphoma type (4.18 micrograms/g.Cr) and crisis ATL (18.20 micrograms/g.Cr) were significantly higher than in urine of healthy controls. However, all asymptomatic carriers of HTLV-I and patients with chronic and smoldering ATL had normal urinary PTH-rP levels. In 7 patients with acute myelogenous leukemia, 1 patient with blastic crisis of chronic myelogenous leukemia and 3 patients with malignant lymphoma, the urinary levels of PTH-rP were above the normal range. Urinary levels of PTH-rP of the ATL patients with hypercalcemia correlated with the serum calcium levels. Urinary levels of PTH-rP of the all ATL correlated with serum lactic dehydrogenase level. These findings suggest that the measurement of urinary levels of PTH-rP is useful for evaluation of ATL and that some tumor cells of other hematologic diseases may produce PTH-rP.
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PMID:[Urinary excretion of parathyroid hormone-related protein in patients with adult T-cell leukemia and other hematologic disorders]. 143 36

The aim of our study was to assess the relationship between the serum lactate dehydrogenase isoenzyme 1 (S-LDH-1) activity in patients with testicular germ cell tumors and the number of copies of the short arm of chromosome 12 (12p) present in tumor. Twenty-seven adult patients with measurable tumor lesions were studied. Twenty-five had three or more copies of chromosome 12 per cell in the tumors. Nineteen had one or more copies of a specific chromosomal abnormality, an isochromosome of the short arm of chromosome 12, i(12p). Fourteen had increased S-LDH-1 levels. S-LDH-1 activity correlated significantly with the product of total tumor volume and the total number of copies of the short arm of chromosome 12 present per cell (total tumor 12p). We conclude that the total number of copies of the short arm of chromosome 12 in the tumors is most probably a factor contributing to the LDH-1 activity released from the tumors.
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PMID:Serum lactate dehydrogenase isoenzyme 1 activity in patients with testicular germ cell tumors correlates with the total number of copies of the short arm of chromosome 12 in the tumor. 143 25

A frequently used method to assess cellular dysfunction and damage in humans is to document the presence of uniquely intracellular proteins in extracellular spaces. Thus, increased plasma levels of transaminases generally reflect hepatocellular damage (Lieber 1978), increases in the cardiac fractions of creatine kinase (CK, or CPK for creatine phosphokinase) or lactate dehydrogenase (LDH) are diagnostic for myocardial infarction (Armstrong et al. 1979; 1982), and increases of skeletal muscle fractions of CK may indicate myopathy (Goto 1974; Ford 1984). Similarly, a number of enzymes and proteins serve as tumor markers in a variety of malignant cancer (e.g., Concannon et al. 1974; Foti et al. 1977).
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PMID:Creatine kinase and enolase: intracellular enzymes serving as markers of central nervous system damage in neuropsychiatric disorders. 147 Jun 77

Dysgerminoma is the most common malignant germ cell tumor in young women. The management of advanced-stage dysgerminoma challenges the gynecologic oncologist to achieve maximal survival, while maintaining childbearing potential. Radiation therapy has been extremely successful in curing dysgerminoma, but ovarian conservation is usually not possible. In contrast, various chemotherapeutic regimens have achieved high cure rates with continued ovarian function. Diagnosing recurrent dysgerminoma promptly so that salvage therapy can be initiated is important when conservative management has been employed. While alpha-fetoprotein and human chorionic gonadotropin have proven useful as tumor markers in some types of germ cell tumors, they have not been useful in patients with dysgerminoma. Serum lactic dehydrogenase (LDH) levels are known to be elevated in some patients with dysgerminoma. We treated a patient with Stage IIIC dysgerminoma whose initial serum LDH level was markedly elevated. After unilateral salpingo-oophorectomy with pelvic and paraaortic lymphadenectomy, followed by four cycles of VAC chemotherapy, her LDH level returned to normal. Her LDH level rose with disease recurrence and returned to normal again with salvage BEP chemotherapy. This is the first report to document the utility of serial LDH measurements in detecting disease recurrence in patients with ovarian dysgerminoma.
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PMID:Serum lactic dehydrogenase as a tumor marker in dysgerminoma. 154 42

To determine the safety, diagnostic value, and clinical outcome of patients with malignancy undergoing subxiphoid pericardiotomy for large pericardial effusions, we prospectively studied 25 consecutive patients with malignancy and new, large pericardial effusions diagnosed by echocardiography. Twenty-two of the 25 operations were done under local anesthesia, and no patient died at surgery. Pericardial fluid cytology revealed malignant cells in 11 patients (44 percent), while tumor was seen in only five (45 percent) of these 11 patients on pathologic examination. The remaining 14 patients showed no evidence of pericardial invasion with tumor. Evidence of intrathoracic disease by CT or MRI scanning, tamponade, a sanguineous pericardial fluid character, and an elevated serum and pericardial fluid lactate dehydrogenase level all were suggestive of malignant invasion of the pericardium. All 25 patients were followed at least 12 months postoperatively. Effusions recurred in three patients (12 percent), and one patient required reoperation. Overall mortality was 72 percent with a 91 percent (10 of 11) mortality for those with malignant effusions and a 57 percent (8 of 14) mortality for those with nonmalignant effusions. Diagnostically, subxiphoid pericardiotomy has little advantage over examination of pericardial fluid alone in this group of patients. Therapeutically, however, it is a low morbidity procedure which is safe and effective in treating patients with malignancy and large pericardial effusions.
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PMID:Subxiphoid pericardiotomy in the diagnosis and management of large pericardial effusions associated with malignancy. 155 67

Between January 1, 1979, and September 30, 1990, a total of 1,886 patients in the National Defense Medical College Hospital, a self-referred population, had a hysterectomy because of signs and symptoms presumably resulting from uterine myomas. After hysterectomy with presumed benign disease, a histologic diagnosis of leiomyosarcoma was made in 7 patients (0.37%). Preoperative diagnosis of leiomyosarcoma was not made in any of the 7 patients. However, serum lactate dehydrogenase levels were abnormally elevated in 3 of them, and degenerative changes were found within the tumor by ultrasonography in 5 of them. Furthermore, increased lactate dehydrogenase levels and degenerative changes within the tumor were found in 3 of the patients whose tumors had 10 or more mitoses per 10 high-power fields. The prognosis for the leiomyosarcomas with increased mitotic rates is very poor. Therefore, a degenerative change within the uterine mass and an increased lactate dehydrogenase level, when present, should suggest the diagnosis of leiomyosarcoma.
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PMID:Leiomyosarcoma of the uterus: ultrasonography and serum lactate dehydrogenase level. 155 23

Three cases of pure dysgerminoma concomitant with pregnancy were managed by conservative surgery and term delivery. One woman with advanced disease received chemotherapy for the last trimester. Tumor response, measured by normalization of the serum tumor markers CA 125 and lactic dehydrogenase, was confirmed by magnetic resonance imaging.
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PMID:Conservative surgical management of dysgerminoma concomitant with pregnancy. 156 99

A substantial fraction of cells present within hard tumors experience extremely hypoxic and hypoglycemic conditions that can lead to phenotypic alterations such as increased metastatic potential and chemotherapeutic drug resistance. Little is known regarding the influence of anoxic aglycemia on tumor cell energy metabolism and viability, and no direct comparisons have been made between the effects of this form of metabolic stress on tumor cells and their tissue of origin. In this study, the effects of in vitro aglycemic incubation under N2 (with or without iodoacetate) on trypan blue exclusion, lactate dehydrogenase release, cell surface blebbing, ATP levels, and mitochondrial respiratory capacity of rat AS-30D ascites hepatoma cells and normal hepatocytes were measured. Under anoxic-aglycemic conditions, the period of incubation during which 50% viability was lost was 2 h for hepatocytes and 6-8 h for AS-30D cells. In contrast, the rate of anoxia-induced loss of ATP was comparable for the two cell types, and mitochondrial damage was actually accelerated in the tumor cells. These findings suggest that tumor cells are more resistant to anoxic cell death because of their greater ability to withstand deenergization and subcellular injury.
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PMID:Differential sensitivity of AS-30D rat hepatoma cells and normal hepatocytes to anoxic cell damage. 161 5

Strontium-89 has been used for the treatment of painful bony metastases in patients suffering from disseminated adenocarcinoma of the prostate, with a variable proportion of patients obtaining clinically significant reductions in analgesic requirements. Based on data revealing enhancement of continuous low-dose rate irradiation by low-dose cisplatin in murine models, a protocol using 148 MBq (4 mCi) of 89Sr and 35 mg/m2 of cisplatin infused over 2 days, 1 and 4 wk after administration of the radioisotope was undertaken. Preliminary data suggest good pain relief with 55% of 18 patients entered thus far obtaining at least a 50% reduction in analgesic requirements. Improvements in total alkaline phosphatase and serum lactate dehydrogenase have consistently been seen, with some patients exhibiting improvements in hemoglobin, tumor markers and bone scans. Toxicity appears to be mild, with no life-threatening complications. In particular, myelosuppression after one course of treatment was modest, but retreatments in two patients has resulted in grade 3 hematologic toxicity. Two patients developed a "pain flare" after administration of cisplatin. Further accrual to this study will allow more accurate determination of pain response rate, and improved evaluation of parameters of objective response.
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PMID:Strontium-89 and low-dose infusion cisplatin for patients with hormone refractory prostate carcinoma metastatic to bone: a preliminary report. 163 33


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