Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027819 (neuroblastoma)
 27,800 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Seventy-four out of 113 sera from patients with infectious hepatitis, chickenpox, measles and mumps reacted with both smooth muscle and cytoplasmic filaments in cultured fibroblasts and neuroblastoma. Five out of eighty-five control sera also reacted in this way. That the cytoplasmic structures are intermediate filaments was suggested by their rearrangement into coils of perinuclear filaments in colchicine- or vinblastine-treated fibroblasts, but not in cytochalasin B-treated cells. The idenity of these structures was confirmed by the demonstration that the same structures reacted with the post-viral sera and a rabbit and human anti-intermediate filament antibody. Immunoabsorption studies showed that twenty-seven out of thirty-two positive sera were neutralised by skeletin, the intermediate filament protein from smooth muscle. In all but one of the sera, the antibody was IgM. Antibody titres fell in the second specimen in eleven out of fourteen pairs of acute and convalescent sera. The association between viral infections and autoantibodies suggest that production of antibodies suggests that production of antibody to intermediate filaments may be initiated by viruses.
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PMID:Viral infections and IgM autoantibodies to cytoplasmic intermediate filaments. 38 89

Intradermal skin test antigen (Varidase, Mumps, Candidine) and contact sensitization with 2,4-dinitrochlorobenzene (DNCB) were employed in 35 previously untreated children with neuroblastoma and malignant lymphoma, to evaluate delayed cutaneous hypersensitivity. Cutaneous responses were correlated to stage of disease and survival. The limited number of patients prevents any definitive conclusion. It is apparent, however, that in childhood non-Hodgkin's lymphoma anergy to DNCB is correlated to advanced stages with rapid progressive disease. In neuroblastoma and Hodgkin's disease patients skin test sensitization seems to be of questionable clinical value.
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PMID:Skin tests in childhood lymphoma and neuroblastoma. 102 49

Previous studies have suggested a relationship between reproductive history, pregnancy and birth factors, and the risk of neuroblastoma. We conducted a case-control telephone interview study that included a total of 504 children under the age of 19 years with newly diagnosed neuroblastoma identified by two national collaborative clinical trials groups, the Children's Cancer Group and the Pediatric Oncology Group. A total of 504 controls, matched to cases on age, were identified by random digit dialing. Conditional logistic regression was used to estimate the matched odds ratio (OR) and 95% confidence interval (CI) with adjustment for household income, and maternal race and education. In addition, case subgroups defined by age at diagnosis, tumour MYCN oncogene amplification status, and stage were evaluated. A suggestive pattern of increased risk was seen for a greater number of prior pregnancies, history of previous miscarriages and induced abortions, with nearly a twofold increase in risk for two or more prior induced abortions (OR = 1.9, 95% CI [1.0,3.7]). No association was found for the following diseases or conditions during pregnancy: hepatitis, rubella, measles, mumps, chickenpox, mononucleosis, vaccinations, morning sickness, pre-eclampsia, bleeding, proteinuria, anaemia, urinary tract infections, heart disease, kidney disease, liver disease and diabetes. A weak association was found for hypertension during pregnancy. Several labour and delivery factors were related to an increased risk, including threatened miscarriage, anaesthetic during labour (specifically epidural) and caesarean delivery. We found associations between premature delivery (<33 weeks: OR = 1.9, 95% CI [0.7,4.8]), very low birthweight (<1500 g: OR = 2.6, 95% CI [0.7,10.3]) and risk of neuroblastoma. There was no consistent pattern of increased risk found for most factors within subgroups defined by age at diagnosis, stage or MYCN status.
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PMID:Association of pregnancy history and birth characteristics with neuroblastoma: a report from the Children's Cancer Group and the Pediatric Oncology Group. 1170 80

Neuroblastoma is the most common cancer in infants worldwide, but little is known about its etiology. Infectious etiologies involving the immune system have been hypothesized for some childhood cancers, especially leukemia, but the role of infectious agents in neuroblastoma has not been fully investigated. The authors used data from a large case-control study conducted by the Children's Oncology Group in the United States and Canada in 1992-1994 to investigate whether there was any relation among day-care attendance, childhood infections, allergies, and neuroblastoma. They interviewed mothers of 538 case children and 504 age-matched control children by telephone about several factors, including pregnancy, medical history, lifestyle, and childhood medical conditions and exposures. The results suggested decreased risks associated with day-care attendance (odds ratio (OR) = 0.81, 95% confidence interval (CI): 0.56, 1.17), childhood infectious diseases (chickenpox, mumps, red measles, and German measles) (OR = 0.60, 95% CI: 0.39, 0.93), and allergies (OR = 0.68, 95% CI: 0.44, 1.07). The authors found reduced neuroblastoma risk associated with markers of potential childhood infections. This suggests a possible role of infectious agents in neuroblastoma etiology. Future epidemiologic studies should incorporate more direct data on infection.
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PMID:Day care, childhood infections, and risk of neuroblastoma. 1510 77

A high rate of post-vaccinal aseptic meningitis for Urabe AM9 mumps virus strain is well documented. This strain is composed of two virus variants differing at the nt 1081 (A/G) region in the hemagglutinin-neuraminidase (HN) gene. An association of HN-A(1081) variant with neurovirulence has been proposed. In order to test for neurotropism we isolated the HN-A(1081) and HN-G(1081) virus variants from Urabe AM9 mumps virus vaccine. Sequential passages were performed in monkey kidney Vero cells and human neuroblastoma SH-SY5Y cells. Viral replication was determined by conventional and real-time RT-PCR. The results show that clone HN-A(1081) can replicate efficiently in both cell types. However, a defective replication of clone HN-G(1081), lacking its genetic marker, was observed after the third passage in neuroblastoma cells. Kinetics assays showed that clone HN-A(1081) replicates faster than clone HN-G(1081). Viral clones were also inoculated into the brains of newborn rats. Clone HN-A(1081) replicated 14 times, while clone HN-G(1081) merely duplicated its level over the initial inoculum. These results suggest that there is a selective replication of HN-A(1081) mumps virus variants in cells of nervous origin.
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PMID:Two clones obtained from Urabe AM9 mumps virus vaccine differ in their replicative efficiency in neuroblastoma cells. 1629 53

Mumps virus (MuV) infects various organs including central nervous system (CNS). However, the molecular basis of the neural cell specificity of MuV is not well understood. We found that the Hoshino vaccine strain rescued from cDNA replicated moderately in neuroblastoma SH-SY5Y cell line, while an Urabe strain (Ur89-250) isolated from a post-vaccination aseptic meningitis case replicated efficiently in the same cells. In order to examine the contribution of individual genes of Ur89-250 to the growth in SH-SY5Y cells, recombinant Hoshino vaccine strains in which each gene(s) was replaced with corresponding gene(s) of Ur89-250 were generated. A recombinant virus possessing the small hydrophobic and haemagglutinin-neuraminidase (HN) genes of Ur89-250 grew as efficiently in SH-SY5Y cells as Ur89-250. Further analysis indicated that an amino acid substitution at position 464 in the HN protein was most important for efficient growth. Thus, single amino acid substitution in the HN protein could affect neural cell specificity of mumps virus.
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PMID:Amino acid substitution at position 464 in the haemagglutinin-neuraminidase protein of a mumps virus Urabe strain enhanced the virus growth in neuroblastoma SH-SY5Y cells. 1971 64

Opsoclonus-myoclonus-ataxia (OMA) syndrome is a rare neurological disorder, characterized by a rapid onset of generalized myoclonus in association with chaotic multi-directional eye movements and, less frequently, cerebellar ataxia. OMA is commonly related to a paraneoplastic process, specifically neuroblastoma in children and lung or breast cancer in adults. Nevertheless, OMA may occur in association with various infectious agents, such as Coxsackie virus B3, Epstein-Barr virus, mumps, enterovirus, and streptococcus. We recently encountered two cases of HIV-related OMA syndrome. The first patient developed a sudden onset of OMA at the time of HIV seroconversion. The second patient experienced severe ataxia with a mild degree of myoclonus and opsoclonus, associated with an elevated CD4 count following the initiation of highly active antiretroviral therapy (HAART). We suggest that OMA syndrome may be another rare manifestation of HIV infection at the time of seroconversion or during an immune restoration period.
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PMID:HIV-related opsoclonus-myoclonus-ataxia syndrome: report on two cases. 2042 23