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  • 1
    Publication Date: 2019-06-28
    Description: Many studies of superclusters of galaxies have been conducted, taking into account also superclusters representing candidate binary cluster systems. The present investigation is concerned with further studies of potential binary cluster systems, giving attention to a sample of six cluster pairs, in which the redshifts and X-ray luminosities of each member of a pair have been measured. One of the objectives of the investigation was related to a search for X-ray evidence that the clusters interact in these potentially binary systems. A second objective was to provide a measure of the mass of hot gas in the clusters. Two new systems in which the two clusters may have a physical association were found.
    Keywords: ASTRONOMY
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 290; 551-556
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  • 2
    Publication Date: 1988-08-05
    Description: The human pS2 gene is specifically expressed under estrogen transcriptional control in a subclass of estrogen receptor-containing human breast cancer cells. The pS2 gene encodes an 84-amino acid protein that is secreted after signal peptide cleavage. The distribution of pS2 protein in normal human tissues was studied with antibodies to pS2; pS2 was specifically expressed and secreted by mucosa cells of the normal stomach antrum and body of both female and male individuals. Moreover, no estrogen receptor could be detected in these cells, indicating that pS2 gene expression is estrogen-independent in the stomach. The function of the pS2 protein in the gastrointestinal tract is unknown. However, the pS2 protein is similar in sequence to a porcine pancreatic protein that has been shown to inhibit gastrointestinal motility and gastric secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rio, M C -- Bellocq, J P -- Daniel, J Y -- Tomasetto, C -- Lathe, R -- Chenard, M P -- Batzenschlager, A -- Chambon, P -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):705-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CNRS et U. 184 de l'INSERM, Institut de Chimie Biologique, Faculte de Medecine, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3041593" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal ; Breast Neoplasms/*metabolism ; Estrogens/pharmacology ; Exons ; Female ; Gastric Mucosa/*metabolism ; *Gene Expression Regulation ; Histocytochemistry ; Humans ; Immunoenzyme Techniques ; Male ; Molecular Sequence Data ; Neoplasm Proteins/*biosynthesis/genetics/secretion ; *Proteins ; RNA, Messenger/metabolism ; Receptors, Estrogen/metabolism ; Sequence Homology, Nucleic Acid ; Tissue Distribution ; Tumor Cells, Cultured ; Tumor Suppressor Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1989-08-25
    Description: Cocaine abuse has reached epidemic proportions in the United States, and the search for an effective pharmacotherapy continues. Because primates self-administer most of the drugs abused by humans, they can be used to predict the abuse liability of new drugs and for preclinical evaluation of new pharmacotherapies for drug abuse treatment. Daily administration of buprenorphine (an opioid mixed agonist-antagonist) significantly suppressed cocaine self-administration by rhesus monkeys for 30 consecutive days. The effects of buprenorphine were dose-dependent. The suppression of cocaine self-administration by buprenorphine did not reflect a generalized suppression of behavior. These data suggest that buprenorphine would be a useful pharmacotherapy for treatment of cocaine abuse. Because buprenorphine is a safe and effective pharmacotherapy for heroin dependence, buprenorphine treatment may also attenuate dual abuse of cocaine and heroin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mello, N K -- Mendelson, J H -- Bree, M P -- Lukas, S E -- DA-00101/DA/NIDA NIH HHS/ -- DA-02519/DA/NIDA NIH HHS/ -- DA-04059/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1989 Aug 25;245(4920):859-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Alcohol and Drug Abuse Research Center, Harvard Medical School, McLean Hospital, Belmont, MA 02178.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2772637" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Buprenorphine/*pharmacology/therapeutic use ; Cocaine/*administration & dosage ; Dose-Response Relationship, Drug ; Female ; Macaca mulatta ; Male ; Self Administration ; Substance-Related Disorders/*drug therapy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 1997-05-02
    Description: Mutations in the tumor suppressor gene PATCHED (PTC) are found in human patients with the basal cell nevus syndrome, a disease causing developmental defects and tumors, including basal cell carcinomas. Gene regulatory relationships defined in the fruit fly Drosophila suggest that overproduction of Sonic hedgehog (SHH), the ligand for PTC, will mimic loss of ptc function. It is shown here that transgenic mice overexpressing SHH in the skin develop many features of basal cell nevus syndrome, demonstrating that SHH is sufficient to induce basal cell carcinomas in mice. These data suggest that SHH may have a role in human tumorigenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oro, A E -- Higgins, K M -- Hu, Z -- Bonifas, J M -- Epstein, E H Jr -- Scott, M P -- AR39959/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1997 May 2;276(5313):817-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Dermatology, Stanford University School of Medicine, Stanford, CA 94305-5427, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9115210" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basal Cell Nevus Syndrome/*genetics/metabolism/pathology ; Carcinoma, Basal Cell/*genetics/metabolism/pathology ; Embryo, Mammalian ; *Gene Expression Regulation, Neoplastic ; Hedgehog Proteins ; Humans ; Intracellular Signaling Peptides and Proteins ; Keratinocytes/metabolism ; Male ; Membrane Proteins/genetics/metabolism ; Mice ; Mice, SCID ; Mice, Transgenic ; Mutation ; Neoplasm Transplantation ; Protein Biosynthesis ; Proteins/*genetics/metabolism ; Receptors, Cell Surface ; Skin/pathology ; Skin Neoplasms/*genetics/metabolism/pathology ; Skin Transplantation ; *Trans-Activators
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1995-07-21
    Description: Huntington's disease (HD) is a dominant neurodegenerative disorder caused by expansion of a CAG repeat in the gene encoding huntingtin, a protein of unknown function. To distinguish between "loss of function" and "gain of function" models of HD, the murine HD homolog Hdh was inactivated by gene targeting. Mice heterozygous for Hdh inactivation were phenotypically normal, whereas homozygosity resulted in embryonic death. Homozygotes displayed abnormal gastrulation at embryonic day 7.5 and were resorbing by day 8.5. Thus, huntingtin is critical early in embryonic development, before the emergence of the nervous system. That Hdh inactivation does not mimic adult HD neuropathology suggests that the human disease involves a gain of function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duyao, M P -- Auerbach, A B -- Ryan, A -- Persichetti, F -- Barnes, G T -- McNeil, S M -- Ge, P -- Vonsattel, J P -- Gusella, J F -- Joyner, A L -- NS16367/NS/NINDS NIH HHS/ -- NS32765/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 21;269(5222):407-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurogenetics Unit, Massachusetts General Hospital, Charlestown 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618107" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Ectoderm/cytology ; Embryonic and Fetal Development ; Female ; Gene Targeting ; Genotype ; Heterozygote ; Homozygote ; Humans ; Huntington Disease/*genetics ; Male ; Mesoderm/cytology ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Nerve Tissue Proteins/*genetics/physiology ; Nuclear Proteins/*genetics/physiology ; Phenotype ; Stem Cells/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1996-05-24
    Description: The entorhinal cortex provides the major cortical input to the hippocampus, and both structures have been implicated in memory processes. The dynamics of neuronal circuits in the entorhinal-hippocampal system were studied in slices by optical imaging with high spatial and temporal resolution. Reverberation of neural activity was detected in the entorhinal cortex and was more prominent when the inhibition due to gamma-aminobutyric acid was slightly suppressed. Neural activity was transferred in a frequency-dependent way from the entorhinal cortex to the hippocampus. The entorhinal neuronal circuit could contribute to memory processes by holding information and selectively gating the entry of information into the hippocampus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iijima, T -- Witter, M P -- Ichikawa, M -- Tominaga, T -- Kajiwara, R -- Matsumoto, G -- New York, N.Y. -- Science. 1996 May 24;272(5265):1176-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cellular Neuroscience Section, Electrotechnical Laboratory, Ibaraki, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638163" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Electric Stimulation ; Entorhinal Cortex/*physiology ; GABA Antagonists/pharmacology ; Hippocampus/*physiology ; Image Processing, Computer-Assisted ; In Vitro Techniques ; Male ; Memory/*physiology ; Microscopy, Fluorescence ; Neural Pathways ; Rats ; Rats, Wistar ; Synaptic Transmission/drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1996-10-11
    Description: To determine the function of the pS2 trefoil protein, which is normally expressed in the gastric mucosa, the mouse pS2 (mpS2) gene was inactivated. The antral and pyloric gastric mucosa of mpS2-null mice was dysfunctional and exhibited severe hyperplasia and dysplasia. All homozygous mutant mice developed antropyloric adenoma, and 30 percent developed multifocal intraepithelial or intramucosal carcinomas. The small intestine was characterized by enlarged villi and an abnormal infiltrate of lymphoid cells. These results indicate that mpS2 is essential for normal differentiation of the antral and pyloric gastric mucosa and may function as a gastric-specific tumor suppressor gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lefebvre, O -- Chenard, M P -- Masson, R -- Linares, J -- Dierich, A -- LeMeur, M -- Wendling, C -- Tomasetto, C -- Chambon, P -- Rio, M C -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):259-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS/INSERM/Universite Louis Pasteur/College de France, Communaute Urbaine de Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824193" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/etiology/pathology ; Animals ; Base Sequence ; Cell Differentiation ; Cloning, Molecular ; Female ; Gastric Mucosa/cytology/*pathology ; Gene Targeting ; Genes, Tumor Suppressor ; Intestinal Mucosa/cytology/*pathology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Neoplasm Proteins/genetics/*physiology ; Phenotype ; *Proteins ; Pyloric Antrum ; Stomach Neoplasms/*etiology/pathology ; Tumor Suppressor Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1996-02-02
    Description: Microsatellite DNA markers have been widely used as a tool for the detection of loss of heterozygosity and genomic instability in primary tumors. In a blinded study, urine samples from 25 patients with suspicious bladder lesions that had been identified cystoscopically were analyzed by this molecular method and by conventional cytology. Microsatellite changes matching those in the tumor were detected in the urine sediment of 19 of the 20 patients (95 percent) who were diagnosed with bladder cancer, whereas urine cytology detected cancer cells in 9 of 18 (50 percent) of the samples. These results suggest that microsatellite analysis, which in principle can be performed at about one-third the cost of cytology, may be a useful addition to current screening methods for detecting bladder cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mao, L -- Schoenberg, M P -- Scicchitano, M -- Erozan, Y S -- Merlo, A -- Schwab, D -- Sidransky, D -- New York, N.Y. -- Science. 1996 Feb 2;271(5249):659-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Otolaryngology--Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205-2196, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8571131" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Chromosome Deletion ; Chromosomes, Human, Pair 9 ; DNA, Neoplasm/genetics/*urine ; Female ; Genetic Markers ; Heterozygote ; Humans ; Male ; *Microsatellite Repeats ; Middle Aged ; Neoplasm Staging ; Pilot Projects ; Polymerase Chain Reaction ; Urinary Bladder Neoplasms/*diagnosis/genetics/pathology/urine ; Urine/cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 1996-06-14
    Description: The basal cell nevus syndrome (BCNS) is characterized by developmental abnormalities and by the postnatal occurrence of cancers, especially basal cell carcinomas (BCCs), the most common human cancer. Heritable mutations in BCNS patients and a somatic mutation in a sporadic BCC were identified in a human homolog of the Drosophila patched (ptc) gene. The ptc gene encodes a transmembrane protein that in Drosophila acts in opposition to the Hedgehog signaling protein, controlling cell fates, patterning, and growth in numerous tissues. The human PTC gene appears to be crucial for proper embryonic development and for tumor suppression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, R L -- Rothman, A L -- Xie, J -- Goodrich, L V -- Bare, J W -- Bonifas, J M -- Quinn, A G -- Myers, R M -- Cox, D R -- Epstein, E H Jr -- Scott, M P -- AR3995/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 14;272(5268):1668-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, California 94305-5427, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658145" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amino Acid Sequence ; Animals ; Basal Cell Nevus Syndrome/*genetics ; Base Sequence ; Cloning, Molecular ; DNA, Neoplasm ; Drosophila ; *Drosophila Proteins ; Female ; Frameshift Mutation ; *Genes, Tumor Suppressor ; Humans ; Insect Hormones/genetics ; Male ; Membrane Proteins/*genetics ; Middle Aged ; Molecular Sequence Data ; Polymerase Chain Reaction ; Polymorphism, Single-Stranded Conformational ; Protein Conformation ; Receptors, Cell Surface
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 1986-04-25
    Description: Immunoreactive oxytocin and neurophysin were identified and measured by radioimmunoassay in human thymus extracts. Serial dilutions of extracts paralleled the appropriate standard curves. Thymus-extracted oxytocin and neurophysin eluted in the same positions as reference preparations on Sephadex G-75. Authenticity of oxytocin was confirmed by biological assay and high-performance liquid chromatography analysis. In most instances, thymus contents of oxytocin and neurophysin were far greater than those expected from known circulating concentrations and declined with increasing age. The molar ratio of oxytocin to neurophysin in thymus was similar to that found in the hypothalamo-neurohypophyseal system, which strongly suggested with the other data a local synthesis of oxytocin. These findings indicate the presence of neurohypophyseal peptides in the human thymus and further support the concept of a neuroendocrine function integrated in an immune structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geenen, V -- Legros, J J -- Franchimont, P -- Baudrihaye, M -- Defresne, M P -- Boniver, J -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):508-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961493" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Age Factors ; Child ; Chromatography, Gel ; Chromatography, High Pressure Liquid ; Female ; Humans ; Infant, Newborn ; Male ; Middle Aged ; Myasthenia Gravis/physiopathology ; Neurophysins/*analysis/isolation & purification/physiology ; Oxytocin/*analysis/isolation & purification/physiology ; Radioimmunoassay ; Thymus Gland/*analysis/physiology/physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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