Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027627 (metastases)
 103,950 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Electron spin resonance (ESR) spectroscopy was used to examine changes in the concentration of paramagnetic metal ions in Yoshida tumours carried by female Wistar rats. Blood, spleen and lymph nodes from these animals were also examined by ESR. A decrease in the concentration of a paramagnetic species associated with mitochondrial activity, and marked increases in those thought to be associated with inflammatory or immune reactions and cell lysis, were observed in the tumours within one day of implantation. During development of the tumour, and during its regression after treatment with methylene dimethane sulphonate (MDMS), further changes were observed in the concentration of the species. These were dependent on the region of the tumour examined. In blood, development of the tumour produced an increase in ceruloplasmin and a decrease in iron-transferrin. An increase in spleen weight, as the tumour developed, was accompanied by a small decrease in the concentration of species with g-values of 6-0 and 4-3, which was reversed on regression of the treated tumour. The presence of metastases in the regional lymph nodes produced distinguishable changes in the ESR spectra.
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PMID:Electron spin resonance study of changes during development of solid yoshida tumour. II. Paramagnetic metal ions. 18 10

The alkaline phosphatase in homogenates of human liver was separated into two components by the addition of Triton X-100 to an agarose gel electrophoretic system. One of these components migrated at a rate identical to that of the original one and similar to alpha2-macroglobulin. The other component migrated more slowly, at a rate that resembled that of beta1-transferrin. Human serum samples regularly contained an identical fast-migrating fraction, whereas an identical slowly migrating fraction only appeared in serum obtained from patients with various diseases, especially from patients with malignant tumours, even though the liver did not contain tumour metastases. Slow isoenzyme was found in a few sera that had alkaline phosphatase activity within the normal range. Histochemical examinations of liver tissue from patients whose serum contained the slowly migrating isoenzyme showed a pronounced reaction of alkaline phosphatase in the bile canaliculi, and this isoenzyme seems to arise from the canaliculi. The fast-migrating isoenzyme might arise from the endothelial cells of the liver, to which the activity is usually confined in histochemical stainings.
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PMID:Endothelial and bile canalicular alkaline phosphatase in human liver and serum. 127 91

Certain metastatic tumor cells successfully form metastases at particular organ sites, and their organ colonization properties cannot be explained by mechanical or anatomic factors. These tumor cells possess the ability to colonize such sites through preferential adhesion to organ microvessel endothelial cells, preferential organ invasion by expression of particular degradative enzymes and response to organ motility factors, and preferential organ growth by response to growth factors present at relatively higher concentrations in the target organ. The likelihood that target organ-associated growth factors exist and are important in metastatic colonization has been approached by studying the mitogenic effects of target organ extracts, fragments, or conditioned media on poorly and highly metastatic tumor cells that show organ preference of metastasis. We previously described the isolation of a major organ-derived (paracrine) growth factor from lung tissue-conditioned medium. Characterization of this mitogen has demonstrated that it is a transferrin or a transferrin-like glycoprotein, and antibodies to transferrin can remove significant growth activity from lung tissue-conditioned medium. Further demonstration of the existence and characterization of metastasis-associated organ (paracrine) growth factors and their receptors will be helpful in understanding the organ preference of metastasis.
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PMID:Differential stimulation of the growth of lung-metastasizing tumor cells by lung (paracrine) growth factors: identification of transferrin-like mitogens in lung tissue-conditioned medium. 138 88

The biodistribution and imaging characteristics of the 111In-labeled anti CEA monoclonal antibody ZCE-025 were studied in five patients with suspicion of colorectal carcinoma. Evaluation included antibody pharmacokinetics and assessment of antibody distribution in surgical specimen, making a comparison with whole-body imaging with a gamma camera. ZCE-025 localization in tumors was demonstrated by gamma-camera imaging in 4 of the 5 patients, corresponding to surgical findings. Persistent accumulation of 111In in the lymph nodes was observed in one patient, whereas surgical exploration of these lymph nodes showed no gross or microscopic evidence of metastases of colon carcinoma. Analysis of individual plasma by size exclusion HPLC showed two radioactivity peaks, labeled antibody and free DTPA. No transchelation of 111In to circulating transferrin was observed. The blood clearance was fitted to a two-compartment equation and its half-lives were found to be 10.8 +/- 8.7 h and 69.5 +/- 21.8 h for t1/2 alpha and t1/2 beta, respectively. Total urinary excretion averaged 0.3% of the injected dose/h with a small patient to patient variation. At 24 hrs postadministration the predominant radiolabeled species in urine was free DTPA. Thereafter, radioactivity in urine was partly present as a low molecular weight catabolic product. No apparent correlation between CEA content and uptake of 111In-ZCE-025 in tumors resected by surgery could be found. How 111In-labeled antibody is accumulated into tumors as well as into some nontumor tissues needs further study.
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PMID:Pharmacokinetic analysis of antibody localization in human colon cancer: comparison with immunoscintigraphy. 152 May 70

Aggressive prostatic carcinomas most frequently metastasize to the skeletal system. We have previously shown that cultured human prostatic carcinoma cells are highly responsive to growth factors found in human bone marrow. To identify the factor(s) responsible for the increased prostatic carcinoma cell proliferation, we fractionated crude bone marrow preparations by using hydroxylapatite HPLC. The major activity peak contained two high molecular weight bands (M(r) = 80,000 and 69,000) that cross-reacted with antibodies to human transferrin and serum albumin, respectively. Bone marrow transferrin, purified to apparent homogeneity by using DEAE-Affi-Gel Blue chromatography, anti-transferrin affinity chromatography, and hydroxylapatite HPLC, markedly stimulated prostatic carcinoma cell proliferation, whereas human serum albumin showed no significant growth factor activity. Marrow preparations, depleted of transferrin by passage over an anti-transferrin affinity column, lost greater than 90% of their proliferative activity. In contrast to the response observed with the prostatic carcinoma cell lines, a variety of human malignant cell lines, derived from other primary sites and metastatic to sites other than bone marrow, showed a reduced response to purified marrow-derived transferrin. These results suggest that rapid growth of human prostatic carcinoma metastases in spinal bone may result from a combination of conditions that include (i) drainage of prostatic carcinoma cells into the paravertebral circulation, (ii) high concentrations of available transferrin in bone marrow, and (iii) increased sensitivity of prostatic carcinoma cells to the mitogenic activity of transferrin.
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PMID:Selective stimulation of prostatic carcinoma cell proliferation by transferrin. 163 Nov 8

A monoclonal antibody (mAb) directed against the cytokeratin (CK) polypeptide no. 18 specifically expressed in cells derived from simple epithelia was used to detect epithelial tumor cells in bone marrow aspirates. Of 156 patients with colorectal carcinoma, 42 presented with cells at the time of primary surgery. The incidence of positive findings varied considerably with the size and the localization of the primary tumor, the involvement of regional lymph nodes, and the presence of clinically manifest metastases. Applying a sensitive double-staining procedure, we could demonstrate that epithelial cells in bone marrow showed a heterogeneic expression of receptors for epidermal growth factor (EGF-R) and transferrin (Tf-R) as well as of the proliferation-associated Ki67 antigen. Also human leukocyte antigen (HLA) class I antigens differed widely in their expression on the CK-positive cells. Clinical follow-up studies on 85 patients showed a significantly higher relapse rate in patients presenting with CK-positive cells in their bone marrow at the time of primary surgery. Twenty-three patients were monitored for the presence or absence of CK-positive cells in bone marrow over time. The majority of monitored patients (18 of 23) exhibited a constant pattern of immunocytochemical findings during the time of observation. Thus, the technique may be useful in identifying high-risk patients as well as in monitoring adjuvant therapeutic trials.
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PMID:Epithelial tumor cells in bone marrow of patients with colorectal cancer: immunocytochemical detection, phenotypic characterization, and prognostic significance. 169 90

The consultants all agree to treat this patient who has a seemingly poor prognosis. However, they disagree as to the method and order of treatment. A patient's nutritional status is taken seriously by all 3 experts, although no one would delay surgery to correct a patient's weight loss. Drs. Komisar and Miller consider a weight loss of 10% significant and prefer to assess a patient with lymphocyte counts, serum albumin and transferrin levels, and creatinine/height index. Dr. Osguthorope follows serum hemoglobin, transferrin, prealbumin, and albumin levels. All the experts prefer an enteral route for weight gain. With regard to diagnosis, the experts agree that endoscopy plays an important role in tumor staging. Drs. Komisar and Osguthorpe believe that a tracheotomy should be performed prior to endoscopy. Dr. Miller would prefer intubation with an endotracheal tube but if there were any question of safety, he would proceed with a tracheotomy under local anesthesia. Confirming the histology of the pulmonary lesion is important. Dr. Komisar would proceed with flexible bronchoscopy and if tissue could not be obtained with this method he would obtain a fine-needle biopsy. He believes that if the histology matches that of the larynx, the pulmonary lesion is a metastasis. Dr. Osguthorpe would also obtain a needle biopsy of the lung lesion. If no other lesions are seen on the CT, he would consider this a second primary. Dr. Miller states that unless the histologies are different, the question of primary vs metastatic disease is unanswerable.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Obstructing laryngeal carcinoma with a simultaneous lung lesion. 186 41

Breast carcinomas were examined by the immunoperoxidase technique using antisera specific for lymphocyte subsets, monocytes, NK cells and major histocompatibility antigens (HLA-A, -B, -C; Ia-like). Sixty-four per cent of the patients had a moderate or strong mononuclear cell infiltration, 77% of the patients without mononuclear cell infiltration had receptors for estrogens as compared to 51% of the patients with infiltration. The majority of the infiltrating mononuclear cells were T cells; generally the OKT8 cells were predominant. The Leu 3A/OKT8 cell ratio was not related to histological type, tumor size, age of the patient or presence of metastases. Some of the T cells had the Ia antigen and were thus probably activated. The B cells were either absent or less numerous than the T cells. There was no relation between their distribution and the various parameters studied. A few monocytes were heterogeneous according to their markers (OKM I and acid phosphatase). In 6 cases only there was a strong infiltration of mononuclear cells positive for acid phosphatase. The number of the natural killer cells was also low. Only a few mononuclear infiltrating cells had receptors for transferrin. There was a positive correlation between the inflammatory infiltration and the presence of HLA class-I antigens on tumor cells. Some of the antisera specific for lymphocyte subsets also stained the breast carcinoma cells. The great variations in the subsets of mononuclear cells in breast carcinomas may correspond to various systems of defense against neoplasm.
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PMID:Mononuclear cells infiltrating human mammary carcinomas: immunohistochemical analysis with monoclonal antibodies. 298 90

Fab fragments of monoclonal antibodies (MoAb) to melanoma, radiolabeled with 131I, were evaluated as diagnostic reagents to determine their ability to localize systemic--MoAb injected intravenously (IV)--or nodal metastatic disease--injected subcutaneously (SQ) at a site proximal to draining lymph nodes. Sixty-one scans were performed (40 IV, 21 SQ) in 59 patients who had injections of 0.2-50 mg of 131I coupled (0.2-12 mCi) antibody. These included 48.7, which identifies a high molecular weight antigen (HMW), or 96.5, which identifies a transferrin like molecule, p97. 125I coupled nonspecific Fab 1.4, reacting with murine leukemia virus, or the whole antibody BL3, reactive with a human B cell idiotypic determinant, was generally used in tandem with the patients injected SQ as a nonspecific control. All patients had immunohistochemical studies performed on biopsied lesions and demonstrated binding to the antibodies injected. Of the IV patients, 22/38 (58%) had (+) scans, 13 at SQ or nodal sites, four at visceral sites, and five at visceral and SQ sites. Patients with clinical stage II disease had SQ injection of MoAb, including 11 additional patients injected with the whole antibody 9.2.27 (anti-HMW) labeled with 111In (6 patients) or 131I (5 patients). Nodal dissection was performed 2-4 days later. All 111In coupled antibodies demonstrated excellent nodal delineation without specific identification of tumor deposits. Of the 21 patients injected SQ with MoAb, 17 had confirmed tumor in nodes. Of patients injected with Fab fragments, 4/8 (50%) had specific uptake of MoAb, although only two were successfully imaged. Increased uptake of antimelanoma antibodies was observed in some patients in lymph nodes not containing tumor and was possibly related to antigen shedding. Clearance of labeled antibody from the injection site occurred with a half life of 16-50 hours. Toxicity was limited to local discomfort at the site of SQ injection. Melanoma metastases can be identified with IV or SQ injection or radiolabeled antibodies. These reagents may be useful in the diagnosis or therapy of human melanoma. Further evaluation will be required before they could be considered clinically useful.
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PMID:Monoclonal antibody imaging of human melanoma. Radioimmunodetection by subcutaneous or systemic injection. 375 57

Nutritional status and food intake were recorded for 28 patients with cancer of the larynx and 13 patients with cancer of the pharynx. All patients were without distant metastases and received radiotherapy with a curative intent. No patients were nutritionally depleted when treatment began. Treatment did not induce changes in nutritional status or food intake in patients with cancer of the larynx. The mean energy intake was 135% of the basal metabolic rate (BMR), and the protein intake was 1 g/kg/day. Inversely, patients with cancer of the pharynx suffered a mean loss of body weight of 5 kg (p less than .01), which was almost equally divided between fat tissue (-2.2 kg) and fat-free cell mass (-2.6 kg). There were only minor or no changes in serum albumin and serum transferrin. Mean energy intake was 121% of BMR, and the mean protein intake was 0.9 g/kg/day. Neither nutritional support during admission nor dietetic instructions managed to preserve the nutritional status in patients with cancer of the pharynx. Therefore, these patients need a more intensified nutritional therapy, such as tube feeding.
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PMID:Changes in food intake and nutritional status in patients treated with radiation therapy for cancer of the larynx and pharynx. 383 4


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