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Query: UMLS:C0027819 (neuroblastoma)
 27,800 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A case of meningeal carcinomatosis associated with cerebral metastases from an adrenal neuroblastoma is described. The clinical picture was ushered-in by bilateral sciatic pain in a 50 years old female and was followed by rapidly progressive sensory-motor deficits of the arms and legs, leading to flaccid quadriplegia associated with paralysis of cranial nerves and episodes of mental confusion. Death occurred 4 months alter, in cardiac failure. At autopsy, a bilateral tumor of the adrenal glands was found. No metastases were detected anywhere except in the central nervous system. Histology identified the tumor as a neuroblastoma; meningeal carcinomatosis, radicular infiltration by tumor cells and parenchimal metastases were found in the central nervous system. Neuroblastoma is typically a tumor of childhood, only 13% of them being found in adult's according to Russell and Rubinstein. Meningeal metastases from adrenal neuroblastoma have not hitherto been reported in the literature. In our opinion, the most likely mode of spread of tumor cells to the central nervous system was hematogenous because of the presence of small multiple intraparenchimal metastases; however, possible spread through the perineural lymphatics, as proposed by others, cannot be excluded, due to the prominent localization of tumor cells at spinal roots level. The main differential diagnostic problems (paraneoplastic neuropathy (Wyburn-Mason) and infectious subacute or chronic meningitis) are discussed. The authors stress the emportance of complete cerebro-spinal fluid examination including a careful search for tumor cells.
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PMID:[Meningeal carcinomatosis: clinical and anatomical study of a case of suprarenal neuroblastoma (author's transl)]. 6

The cytotoxic potential of heterologous rabbit antibody directed against mouse serum albumin (MSA) and alpha-fetoprotein (AFP) was investigated in vitro with a cell line (Hepa) derived from the mouse hepatoma BW7756. Anti-AFP in the presence of complement could kill Hepa cells at concentrations of anti-MSA that were virtually nontoxic. The specificity of the anti-AFP was defined by demonstrating that Hepa cell toxicity was dependent upon and paralleled the secretion of AFP in synchronized cultures. Furthermore, neither antiserum could be shown to be significantly toxic to mouse neuroblastoma cells (Neuro-2A). Immunoglobulin purified from pools of antisera was also highly effective in producing cytotoxicity even in a complement-free system. This reaction proceeded more slowly, requiring nearly 48 hr to reach maximum effect in comparison to the 12 hr for complement-mediated toxicity. MSA and AFP are secreted during different phases of the cell cycle. In cultures arrested by isoleucine starvation, labeled AFP appears in the medium 10 hr after release of the blockade in association with S phase. The appearance of labeled MSA is delayed until the first mitosis. Cytotoxic effects of anti-AFP parallel the secretion of AFP in synchronous cultures. Both antisera could be inhibitory to the secretion and synthesis of the proteins of their antigenic specificity. MSA synthesis was more susceptible to this inhibition than was AFP synthesis. The significance of this phenomenon and its association with the differential cytotoxicity of the antiserum are discussed.
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PMID:The influence of antisera specific for alpha-fetoprotein and mouse serum albumin on the viability and protein synthesis of cultured mouse hepatoma cells. 6 16

Partial biochemical characterization of several neural tissue specific antigens isolated from a murine glioblastoma cell line was accomplished by means of radioiodination of intact cells followed by immunoprecipitation of the cell lysate with a rabbit serum specific for neural tissue antigens. Polyacrylamide gel electrophoresis of the immunoprecipitate in sodium dodecyl sulfate resolved the labeled antigens into several major components: two proteins (or glycoproteins) having apparent m.w.'s of 84,000 and 120,000 and lipid associated components which may be heterogeneous. The protein and lipid associated components apparently possess independent antigenicity because after chloroformmethanol extraction the protein components can be immunoprecipitated from the aqueous phase and the lipid associated component can be immunoprecipitated from the organic phase. Despite their independent antigenicity it is not known whether the components may be noncovalently associated on the cell surface. Although some of these antigens can be isolated from brain or glioma cells (a related tumor), non can be demonstrated in lymphoid tissues or C1300 neuroblastoma cells using identical methods. Therefore, these studies confirm our previous findings concerning the specificity of the anti-NS-2 antiserum by using cytotoxicity tests.
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PMID:Partial characterization of nervous system-specific cell surface antigen(s) NS-2. 6 27

Brain-associated antigens have been detected on human and mouse thymocytes. Also, murine neuroblasts and brain cells have common antigens. In this study we compared the reactivity of rabbit anti-human brain (HB) serum with neoplastic neuroblasts and normal and neoplastic lymphoid cells. The binding of HB antiserum to viable cells was assessed by immunofluorescence and an indirect radiolabeled antibody assay. HB antiserum reacted with greater than 80% of neuroblasts derived from two human cell lines and five children with neuroblastoma, but with less than 1% of human thymocytes, bone marrow lymphoid cells, and lymphocytic leukemia cells. HB antiserum also reacted with 5 to 10% of peripheral blood lymphocytes. Absorption with neuroblasts did not alt-r this reactivity. Rabbit antisera raised against normal human thymocytes and leukemic T-cells specifically bound to thymocytes but did not bind to neuroblasts. The reactivity of anti-HB serum against SK-N-SH neuroblasts was removed by absorption with HB, but not with human kidney or liver, or mouse and guinea pig brain. We conclude that human neuroblastoma cells possess cell-surface antigens that are present on HB. These antigens appear to be species specific and are not present on normal or malignant thymic cells. Conversely, thymus-associated antigens are not expressed on neuroblasts.
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PMID:Reactivity of human brain antiserum with neuroblastoma cells and nonreactivity with thymocytes and lymphoblasts. 6 86

As part of an inquiry into factors that determine the virulence of fixed rabies virus, mouse neuroblastoma cells were infected in culture with high virulence and low virulence strains of Flury HEP virus. Low virulence virus infection differed from high virulence virus infection in (1) its more rapid production of progeny virus in the early cycles of virus infection as shown by the number of extracellular virus particles and the infectivity of the supernatant fluid; (2) its earlier development of viral antigens on the cell surface; and (3) its earlier and more severe morphologic alteration of the cell surface. Where applicable, the differences were corroborated by scanning and transmission electron microscopy of the infected cells using the critical point drying technique on whole cells. The number of cells susceptible to complement-dependent immunolysis was almost proportional to the number of cells that were surface antigen-positive regardless of the strain of the virus used. Implications of the difference in the kinetics of virus production and of the development of surface antigens between low and high virulence strains are discussed.
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PMID:Rabies virus infection in mouse neuroblastoma cells. 6 72

By using a cytotoxicity inhibition assay employing AKR anti-C3H thymocyte antiserum, we have determined the degree of expression of the thy-1 antigen in fractions of adult mouse brain. As expressed as cytotoxicity inhibitory capacity per mg protein with C3H whole brain arbitrarily assigned a value of 1.0, the following values were found: C3H cerebral cortex, 5.8; C3H cerebral cortex synaptosomes, 2.5: C3H whole brain myelin, 0.65; C3H cerebral cortex neurons, 0.16; and C3H cerebral cortex mitochondria 0.10. Neither C1300 neuroblastoma cells nor any AKR neural fraction had detectable levels of thy-1. The findings indicate that the thy-1 antigen is found mainly in mouse cerebral cortex and in synaptosomal fractions, whereas myelin fractions contain lower but perhaps significant amounts of thy-1. Cerebral cortex neurons, isolated by a method requiring a 90-min mild trypsinization at 37 degrees C, did not display significant amounts of the thy-1 antigen. These results lend themselves to further study in the area of differentiation and development of central nervous system components and in the area of central nervous system immunopathology.
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PMID:Distribution of the thy-1 antigen in cellular and subcellular fractions of adult mouse brain. 6 59

Vital staining of neuroblastoma cells with acridine orange produces a bright intracellular red-orange fluorescence most probably due to the occurrence of RNA. The distribution of this fluorescence depends on the state of morphological differentiation. The fluorescence is predominantly found in the perikaryon, the growth cones, and the endings of the processes of differentiated cells. This is of special interest in respect to the biochemistry of differentiation and the function of nerve cells. Comparative autoradiographical studies with 3H-uridine demonstrate that the newly synthesised RNA is transported into the endings of the cell processes.
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PMID:Distribution of acridine orange-stained RNA in neuroblastoma cells during differentiation. 7 Jul 60

As part of a more extensive study of the immune response in children with neuroblastoma, serum immunoglobulin and alpha-glycoprotein levels were measured in 58 patients. Twenty-nine children were studied at diagnosis, 18 at some time during the first 2 years of treatment, and 11 who were apparently cured after treatment had been completed. No correlation was found between the levels of IgG, IgA, and IgM and the clinical status of the patient. The acute phase reactants (alpha-1-antitrypsin, haptoglobin, C3 component of complement and orosomucoid) varied with the disease status. Twenty-seven of the 29 patients had elevated levels at the time of diagnosis. Alpha-1-antitrypsin and haptoglobin were the two proteins that most accurately reflection the clinical status; C3 component of complement was not infrequently normal when the disease was active; and orosomucoid was sometimes raised in patients apparently in remission. Serial measurement of alpha-1-antitrypsin and haptoglobin could provide a useful means of detecting early relapse in patients responding to treatment.
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PMID:The prognostic value of acute phase reactants in patients with neuroblastoma. 7 Nov 94

Four human neuroblastoma cell lines were studied by chromosome banding techniques. All of the lines contained a marker chromosome with a long nonbanding homogeneously staining region (HSR). The HSR-containing chromosome differed in each line. One line contained two classes of cells: one with an HST marker chromosome and the other with double minute chromosomes. Each cell had one of these abnormalities; no cell had both. The presence of two additional chromosomal markers in all cells of this line indicates a common origin. These observations suggest that the double minute chromosomes are derived from the HSR.
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PMID:Double minute chromosomes and the homogeneously staining regions in chromosomes of a human neuroblastoma cell line. 7 59

The surface antigenic characteristics of human glial brain tumor (HGBT) cells were studied by complement-dependent cytotoxic antibody assays and indirect membrane immunofluorescence. Eight permanent, well-characterized cell lines derived from human gliomas were used for analysis with antisera raised by hyperimmunization of nonhuman primates (Macaca fascicularis) with glioblastoma multiforme tissue or established HGBT cells lines. Exhaustive absorption of these antisera to remove predominantly antispecies activity rendered HLA nonreactive "preabsorbed" antisera, which reacted with a large panel of gliomatous and nongliomatous human tumor cells; 1 carcinoma, 2 sarcomas, 2 melanomas, 1 neuroblastoma, and 8 HGBT cell lines. Four lymphoblastoid lines and 2 carcinomas were unreactive. After further absorption with a human osteogenic sarcoma cell line, the antisera demonstrated significant levels of reactivity for 8 tested HGBT cell lines and no longer reacted with the nongliomatous cultured tumor cells lines. Therefore, extensive absorption of nonhuman primate anti-human glioma sera removed all activity for the nongliomatous cell lines tested, but it left significant reactivity against a glial tumor cell line-associated antigen(s) present on all 8 human glioma cell lines tested.
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PMID:Surface antigenic characteristics of human glial brain tumor cells. 7 98


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