Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:1.1.1.41 (isocitrate dehydrogenase)
 3,101 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The concept of tumor markers was reviewed, and the potential uses of markers of central nervous system (CNS) tumors and methods for their evaluation were discussed. Markers examined included lactate dehydrogenase, aspartate aminotransferase, fructose-bisphosphate aldolase, the polyamines, desmosterol, and several other enzymatic, nonenzymatic, and immunologic markers. Data collated from the clinical studies surveyed showed isocitrate dehydrogenase, desmosterol, and the polyamines to have the greatest potential utility in the diagnosis of CNS tumors.
J Natl Cancer Inst 1979 Oct
PMID:Biochemical markers of central nervous system tumors measured in cerebrospinal fluid and their potential use in diagnosis and patient management: a review. 38 10

A binary logistic model is used for predicting response to cytotoxic chemotherapy for a breast cancer patient on the basis of her tumor enzyme activity profile. The enzymes used in the model are lactate dehydrogenase, nicotinamide adenine dinucleotide phosphate-isocitrate dehydrogenase, and phosphoglucomutase, all of which were measured on primary tumor specimens from each patient. The statistical model provides an estimate of the probability that an individual will respond to treatment. Chemotherapeutic treatment consisting of combination cytotoxic drugs and subsequent evaluation of patient response followed cooperative group protocol guidelines, including outside review to confirm the patient evaluation. The model based on this study, which represents 5 years of patient follow-up, correctly predicts clinical outcome in 32 of the 37 cases available.
Cancer Res 1978 Aug
PMID:A statistical model for predicting response of breast cancer patients to cytotoxic chemotherapy. 66 49

This paper presents preliminary data concerning the relationship of various components of glandular epithelium and effect of enzymes on metabolism, storage, and release of certain substances in normal and abnormal endometria. Activity of these endometrial enzymes has been compared between two groups: 252 patients with normal menstrual histories and 156 patients, all over the age of 40, with abnormal uterine bleeding. Material was obtained by endometrial biopsy or curettage. In the pathologic classification of the group of 156, 30 patients had secretory endometria, 88 patients had endometria classified as proliferative, 24 were classified as endometrial hyperplasia, and 14 were classified as adenocarcinoma. All tissue was studied by histologic, histochemical, and biochemical methods. Glycogen synthetase activity caused synthesis of glucose to glycogen, increasing in amount until midcycle, when glycogen phosphorylase activity caused the breakdown to glucose during the regressive stage of endometrial activity. This normal cyclic activity did not occur in the abnormal endometria, where activity of both enzymes continued at low constant tempo. Only the I form of glycogen synthetase increased as the tissue became more hyperplastic. With the constant glycogen content and the increased activity of both the TPN isocitric dehydrogenase and glucose-6-phosphate dehydrogenase in the hyperplastic and cancerous endometria, tissue energy was created, resulting in abnormal cell proliferation. These altered biochemical and cellular activities may be the basis for malignant cell growth.
Cancer 1976 Jul
PMID:The effect of enzymes upon metabolism, storage, and release of carbohydrates in normal and abnormal endometria. 81 24

Activities of glucosephosphate isomerase, lactate dehydrogenase, and NADP-isocitrate dehydrogenase were significantly elevated in breast cancer specimens from patients who responded favorably to combination cytotoxic chemotherapy regimens compared with those in carcinomas from patients failing to respond to the same chemotherapy. Presence of estrogen receptors and clinical response to hormonal therapy were also evaluated in neoplasms from these patients. The data suggest that measurement of the enzyme profile, along with estrogen receptor levels, may be useful in selecting a mode of therapy for patients with advanced disease.
Cancer 1976 Aug
PMID:Relationship of glycolytic enzyme activities and response of breast cancer patients to chemotherapy: A preliminary report. 97 90

Histochemical distribution of lactate, isocitrate and succinate dehydrogenases in normal oral epithelium and in well differentiated squamous cell carcinoma of cheek region was studied. Lactate dehydrogenase, isocitrate dehydrogenase, and succinate dehydrogenase activity was found to be more in the malignant cells. Succinate and lactate dehydrogenase presented a conspicuous pattern in which the cells located at the periphery of the malignant sheets in well differentiated squamous cell carcinoma showed moderate to intense activity as compared to cells in the central portion. The results are discussed and it is suggested that the enhanced glycolysis and subdued function of the tricarboxylic acid cycle is not a universal criterion during malignancy as reported in the previous investigations.
Indian J Cancer 1989 Mar
PMID:Histochemical studies on the distribution of certain dehydrogenases in squamous cell carcinoma of cheek. 277 29

No evidence for liver necrosis was observed at 24, 48 or 72 h after injection of dimethylnitrosamine (DMN) (70 mg/kg, i.p.) to pigeons. The assessment of possible liver necrosis was made by determination of isocitric dehydrogenase (ICD), glutamate oxalacetate transaminase (GOT) and glutamate pyruvate transaminase (GPT) in plasma. The ability of pigeon liver slices to metabolize CO2 or to give covalent binding of reactive metabolites to nucleic acids was 24 times smaller than that for rat. Similarly, the pigeon liver microsomes or 9000 X g supernatant have DMN-demethylase activity or ability to activate DMN to reactive metabolites that bind covalently to proteins very close to zero. Results suggest that resistance of pigeon liver to DMN acute effects is related to its lack of ability for DMN metabolic activation.
Cancer Lett 1983 Mar
PMID:No response of pigeon liver to dimethylnitrosamine acute effects. 640 21

Endometria of normal histology from postmenopausal women receiving either estrogen or estrogen plus a progestin have been analyzed for nuclear estradiol receptor, epithelial DNA synthesis, isocitric dehydrogenase, and estradiol dehydrogenase activities. Epithelial DNA synthesis correlated positively with nuclear estradiol receptor and negatively with both the dehydrogenases; this result was obtained regardless of whether the enzyme activity was related to the protein or DNA content of the samples. Thus, either of the dehydrogenases might provide an index of progestin effects on proliferative activity in endometrial carcinomata. Provera administered in vivo had no effect on either dehydrogenase activity in soluble estradiol receptor-poor carcinomata, whereas both dehydrogenase activities were high in some but not all soluble estradiol receptor-rich tumors. The enzyme activities in Provera-treated tumors have been compared with those in normal epithelium and endometrium from postmenopausal women taking estrogen plus progestin. The activities of both dehydrogenases were lower in soluble estradiol receptor-rich carcinomata than in either endometrium or epithelium from estrogen plus progestin-primed, normal postmenopausal women. This may indicate suboptimal progestin effects in the patients with carcinoma, and potential reasons for this are discussed.
Cancer Res 1983 Oct
PMID:Simple biochemical method to assess progestin effects on human endometrial DNA synthesis and its application to endometrial carcinoma. 688 50

Dimethylnitrosamine (DMN)-induced liver damage, as measured by the increase in plasma isocitrate dehydrogenase as well as by histologic assessment of necrosis, was marked after DMN ip administration (70 mg/kg) in males of all noninbred species tested (BALB/c mouse, Sprague-Dawley rat, Syrian golden hamster, general purpose guinea pig) but not in the noninbred White Leghorn chicken. At 1 and 3 hours after DMN injection, liver DMN levels were not lower in the chicken as compared to levels in the other species. Furthermore, in all species except the chicken, significant decreases were found at 3 hours as compared to 1 hour after DMN administration. DMN metabolism to CO2 and to formaldehyde, as well as covalent binding of DMN-reactive metabolites to either proteins or nucleic acid, was measured with the use of liver slices, microsomes, and/or 9,000 X g supernatants. Results indicated that chicken liver had a very low capacity for metabolism and activation (29-3,166 times lower than comparable data in mice or hamsters).
J Natl Cancer Inst 1982 Sep
PMID:Chicken resistance to dimethylnitrosamine acute effects on the liver: a comparative study with other species. 695 59

Currently, one of the most popular applications of proteomics is in the area of cancer research. In Africa, Southeast Asia, and China, hepatocellular carcinoma is one of the most common cancers, occurring as one of the top five cancers in frequency. This project was initiated with the purpose of separating and identifying the proteins of a human hepatocellular carcinoma cell line, HCC-M. After two-dimensional gel electrophoresis separation, silver staining, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analyses, tryptic peptide masses were searched for matches in the SWISS-PROT and NCBI nonredundant databases. Approximately 400 spots were analyzed using this approach. Among the proteins identified were housekeeping proteins such as alcohol dehydrogenase, alpha-enolase, asparagine synthetase, isocitrate dehydrogenase, and glucose-6-phosphate 1-dehydrogenase. In addition, we also identified proteins with expression patterns that have been postulated to be related to the process of carcinogenesis. These include 14-3-3 protein, annexin, prohibitin, and thioredoxin peroxidase. This study of the HCC-M proteome, coupled with similar proteome analyses of normal liver tissues, tumors, and other hepatocellular carcinoma cell lines, represents the first step towards the establishment of protein databases, which are valuable resources in studies on the differential protein expressions of human hepatocellular carcinoma.
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PMID:Two-dimensional electrophoresis map of the human hepatocellular carcinoma cell line, HCC-M, and identification of the separated proteins by mass spectrometry. 1087 Sep 66

Heat shock protein (HSP) 27, estradiol (ER), progesterone (PR), isocitric dehydrogenase and DNA-ploidy have been measured in 152 endometrial adenocarcinomas. These parameters have also been related to each other and to tumor grade and overall patient survival. HSP27 was assessed immunohistochemically and ploidy by FACS analysis, whilst biochemical methods were used for the other assays. HSP27 was significantly correlated with ER but not PR, grade or ploidy. Both ER and PR were related to tumor grade but not ploidy. Provera (2-14 days, mean 8) had no apparent effect on HSP27 staining but induced isocitric dehydrogenase in 70% of the tumors. Provera decreased ER (64%) and PR (70%) content in originally positive tumors. The presence of either HSP27, ER or PR in the pretreatment sample was significantly associated with provera induction of isocitric dehydrogenase activity; neither tumor grade nor ploidy predicted for induction of this enzyme. High levels of either HSP27, ER, PR or provera-induced isocitric dehydrogenase and diploid DNA were associated with good overall survival, whereas aneuploidy was linked with poor survival.
Int J Gynecol Cancer 1995 Mar
PMID:Influence of HSP27 and steroid receptor status on provera sensitivity, DNA-ploidy and survival of females with endometrial cancer. 1157 61


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