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  • Articles  (5,424)
  • Mice  (5,424)
  • American Association for the Advancement of Science (AAAS)  (5,420)
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  • Articles  (5,424)
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  • 1
    Electronic Resource
    Electronic Resource
    Transfer of nuclei from 8-cell stage mouse embryos following use of nocodazole to control the cell cycle (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 39 (1994), S. 147-152 
    Details
    ISSN: 1040-452X
    Keywords: Mitosis ; Synchronization ; Mice ; Blastomere ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Mouse 2-, 4-, 8-, and 16-cell embryos were exposed to nocodazole in M16 culture medium. The effect of different concentrations and exposure times on the efficiency of cell cycle synchronization and the development of the treated embyros after release from the drug was determined. The minimum effective concentration (95% of arrested nuclei) for 4-, 8-, and 16-cell embryos was 5μM nocodazole. The effect upon subsequent development of mouse embryos depended upon both the stage of development of the embryo at treatment (P 〈 0.001) and the length of exposure to nocodazole (P 〈 0.001). Exposure to any concentration of nocodazole within the range 2.5-10 μM for 12 hr caused a reduction in the proportion of embryos that formed blastocysts. As the period of exposure to 5μM nocodazole increased from 12 to 24 hr, the proportion of embryos developing to the blastocyst stage decreased. The lower proportion of embyros developing to the blastocyst stage and to term (P 〈 0.01) suggests that the more advanced stages were more susceptible to damage as a result of exposure to nocodazole. The rate of development of 4-cell embryos to blastocysts was not affected when an exposure time of 9 hr was used. Together these results show that it is possible to use nocodazole to arrest mouse embryonic cells in mitosis but that it is not appropriate to culture the embryos in the presence of this drug for prolonged periods. Individual blastomeres completed mitosis at 60-90 min and started DNA synthesis at 120-150 min after release from nocodazole. Nuclei from blastomeres thus synchronized were used to conduct studies on the effect of the cell cycle on nuclear transfer. A signficant effect was found. When nuclei from 8-cell embryos in G1 or S-phase were used as nuclei donors, development to blastocyst was respectively 27% and none. ©Wiley-Liss, Inc.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080390205
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  • 2
    Electronic Resource
    Electronic Resource
    Transgenic offspring by transcaryotic implantation of transgenic ovaries into normal mice (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 25 (1990), S. 42-44 
    Details
    ISSN: 1040-452X
    Keywords: Ovary transfer ; Mice ; Transgenic offspring ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Female transgenic mice may be unable to reproduce successfully if the product encoded by the transgene results in pathological changes or affects the fertility of the mouse. To approach this problem, we have produced chimaeras by transferring the ovaries of transgenic mice into normal mice of the same strain. Such chimaeras will be an ideal tool for investigating the interactions between transgenic ovaries and normal mice or vice versa. Here we show that, using this method, we were able to get large numbers of transgenic offspring even from founder transgenic female mice that were themselves infertile as a result of the overexpression of growth hormone genes. Although none of the ovary recipients were given immunosuppressant treatment, 60% of the recipients had biologically active ovaries over a mean period of about 100 days.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080250108
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  • 3
    Electronic Resource
    Electronic Resource
    Site-specific drug delivery to the lung (1992)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 3 (1992), S. 323-329 
    Details
    ISSN: 1042-7147
    Keywords: Polyanhydrides ; Pulmonary neoplasms ; Mice ; Chemotherapy ; Cisplatin ; BCNU ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Investigations were undertaken to determine whether anti-cancer drugs introduced locally into the lung using bioerodible polyanhydride microspheres as carriers would demonstrate both efficacy and reduced toxicity.BCNU (carmustine) and CDDP (cisplatin), loaded in polyanhydride microspheres, were administered to mice bearing either of two tumors selected for their affinity for the lung: the B16F10 melanoma and the recently established GL26F4 glioma. Following intravenous inoculation of these tumor cells, the number of metastatic foci formed in the lung follows a predictable time course and can readily be determined. Comparisons were made between the efficacy of microspheres introduced into the lung by intratracheal intubation (IT) and of those administered by intraperitoneal injection (IP). Administration of microspheres loaded either with BCNU or cisplatin reduced the detectable metastatic foci by 25-90% depending on the tumor load, both when administered IP and IT.Toxicity was assessed by flow cytometric analysis of bone marrow cellularity as well as by determination of mortality rates. Intratracheal administration of either cisplatin or BCNU reduced the deleterious systemic effects observed when the drug was administered by IP injection. This was seen at high drug levels, where significant mortality occurred only in animals given drug injections IP; and at lower levels where IP injection led to a reduction of bone marrow blast cells, while IT administration caused no detectable effect on marrow cellularity.Since local delivery of BCNU or cisplatin through bioerodible polyanhydride microspheres induces significantly less systemic damage while demonstrating efficacy equal to or exceeding that of IP injection, this mode of drug delivery warrants further and more detailed exploration. Moreover, the method may be applicable to the treatment of other chronic pulmonary pathologies.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1992.220030607
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  • 4
    Electronic Resource
    Electronic Resource
    In situ hybridization studies on murine catalase mRNA expression during embryonic development (1990)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 11 (1990), S. 318-325 
    Details
    ISSN: 0192-253X
    Keywords: Mice ; housekeeping genes ; liver ; tissue specificity ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: In situ hybridization using nucleic acid probes was used to detect cell- and tissue-specific transcript(s) of embryonic genes during development and differentiation. This highly sensitive technique has the potential to provide valuable information on the regulation of low-abundance housekeeping genes during development. We have determined the experimental conditions required to detect the catalase message in adult mouse liver. Catalase effects the breakdown of H2O2 to O2 and H2O and offers protection against the toxic effects of oxygen radicals. We used a cloned 550 bp BamHI-Pstl fragment from a mouse catalase cDNA (pMCT-1) to generate 35S-labeled sense and antisense riboprobes. The experimental conditions used were sensitive enough to quantitate the abundance of silver grains generated by the antisense riboprobe on the adult liver, a tissue known to be positive for this message. The hybridization protocol was applied to serial sections of 13- and 18-day-old mouse embryos. The results suggest that the catalase expression in the liver and brain begins with somite formation and increases with development and differentiation. On the other hand, this message appears to be absent in mesenchyme, particularly in day 13 embryos. The message in positive tissues appears evenly distributed throughout the cell. The observed expression of the catalase message in the adult liver is approximately six times that in the embryonic liver. It is compatible with the enzyme activity results and emphasizes the sensitivity of the in situ hybridization method (over northern blot, etc.) used in this study.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/dvg.1020110411
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  • 5
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    Cancer. BRCA2 enters the fray (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, John H -- Elledge, Stephen J -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1822-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228708" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BRCA1 Protein/metabolism ; BRCA2 Protein/*chemistry/*metabolism ; Binding Sites ; Breast Neoplasms/genetics ; Crystallography, X-Ray ; DNA/*metabolism ; DNA Damage ; *DNA Repair ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/metabolism ; Female ; Genes, BRCA1 ; Genes, BRCA2 ; Genetic Predisposition to Disease ; Humans ; Mice ; Ovarian Neoplasms/genetics ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rad51 Recombinase ; Rats ; Recombination, Genetic ; Replication Protein A
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Direct recognition of cytomegalovirus by activating and inhibitory NK cell receptors (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-16
    Description: Natural killer (NK) cells express inhibitory receptors for major histocompatibility complex (MHC) class I antigens, preventing attack against healthy cells. Mouse cytomegalovirus (MCMV) encodes an MHC-like protein (m157) that binds to an inhibitory NK cell receptor in certain MCMV-susceptible mice. In MCMV-resistant mice, this viral protein engages a related activating receptor (Ly49H) and confers host protection. These activating and inhibitory receptors are highly homologous, suggesting the possibility that one evolved from the other in response to selective pressure imposed by the pathogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arase, Hisashi -- Mocarski, Edward S -- Campbell, Ann E -- Hill, Ann B -- Lanier, Lewis L -- AI30363/AI/NIAID NIH HHS/ -- CA89294/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2002 May 17;296(5571):1323-6. Epub 2002 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology and the Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11950999" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antigens, Ly/chemistry/genetics/*immunology/metabolism ; Cell Line ; Coculture Techniques ; Disease Susceptibility ; Evolution, Molecular ; Herpesviridae Infections/*immunology ; Histocompatibility Antigens Class I/immunology ; Hybridomas ; Immunity, Innate ; Interferon-gamma/biosynthesis ; Killer Cells, Natural/*immunology ; Lectins, C-Type ; Ligands ; Lymphocyte Activation ; Membrane Glycoproteins/chemistry/genetics/*immunology/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Muromegalovirus/genetics/*immunology/metabolism ; NK Cell Lectin-Like Receptor Subfamily A ; Protein Binding ; Receptors, Immunologic/chemistry/genetics/*immunology/metabolism ; Receptors, NK Cell Lectin-Like ; Recombinant Fusion Proteins/metabolism ; Transfection ; Viral Proteins/chemistry/genetics/*immunology/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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  • 7
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    Genomic instability in mice lacking histone H2AX (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-06
    Description: Higher order chromatin structure presents a barrier to the recognition and repair of DNA damage. Double-strand breaks (DSBs) induce histone H2AX phosphorylation, which is associated with the recruitment of repair factors to damaged DNA. To help clarify the physiological role of H2AX, we targeted H2AX in mice. Although H2AX is not essential for irradiation-induced cell-cycle checkpoints, H2AX-/- mice were radiation sensitive, growth retarded, and immune deficient, and mutant males were infertile. These pleiotropic phenotypes were associated with chromosomal instability, repair defects, and impaired recruitment of Nbs1, 53bp1, and Brca1, but not Rad51, to irradiation-induced foci. Thus, H2AX is critical for facilitating the assembly of specific DNA-repair complexes on damaged DNA.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721576/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721576/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celeste, Arkady -- Petersen, Simone -- Romanienko, Peter J -- Fernandez-Capetillo, Oscar -- Chen, Hua Tang -- Sedelnikova, Olga A -- Reina-San-Martin, Bernardo -- Coppola, Vincenzo -- Meffre, Eric -- Difilippantonio, Michael J -- Redon, Christophe -- Pilch, Duane R -- Olaru, Alexandru -- Eckhaus, Michael -- Camerini-Otero, R Daniel -- Tessarollo, Lino -- Livak, Ferenc -- Manova, Katia -- Bonner, William M -- Nussenzweig, Michel C -- Nussenzweig, Andre -- Z99 CA999999/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2002 May 3;296(5569):922-7. Epub 2002 Apr 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11934988" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/immunology/physiology ; Base Sequence ; Cell Aging ; Cell Cycle ; Cells, Cultured ; *Chromosome Aberrations ; DNA Damage ; *DNA Repair ; Female ; Gene Targeting ; Histones/chemistry/*genetics/*physiology ; Immunoglobulin Class Switching ; Infertility, Male/genetics/physiopathology ; Lymphocyte Count ; Male ; Meiosis ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Mutation ; Phosphorylation ; *Recombination, Genetic ; Spermatocytes/physiology ; T-Lymphocytes/immunology/physiology
    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
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    Chemical synthesis of poliovirus cDNA: generation of infectious virus in the absence of natural template (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-13
    Description: Full-length poliovirus complementary DNA (cDNA) was synthesized by assembling oligonucleotides of plus and minus strand polarity. The synthetic poliovirus cDNA was transcribed by RNA polymerase into viral RNA, which translated and replicated in a cell-free extract, resulting in the de novo synthesis of infectious poliovirus. Experiments in tissue culture using neutralizing antibodies and CD155 receptor-specific antibodies and neurovirulence tests in CD155 transgenic mice confirmed that the synthetic virus had biochemical and pathogenic characteristics of poliovirus. Our results show that it is possible to synthesize an infectious agent by in vitro chemical-biochemical means solely by following instructions from a written sequence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cello, Jeronimo -- Paul, Aniko V -- Wimmer, Eckard -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):1016-8. Epub 2002 Jul 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, School of Medicine, State University of New York at Stony Brook, Stony Brook, NY 11794-5222, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12114528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Capsid/metabolism ; Cell-Free System ; DNA, Complementary/*chemical synthesis/genetics ; DNA-Directed RNA Polymerases/genetics ; Female ; *Genome, Viral ; HeLa Cells ; Humans ; Male ; *Membrane Proteins ; Mice ; Mice, Transgenic ; Neutralization Tests ; Poliomyelitis/virology ; *Poliovirus/genetics/immunology/pathogenicity/physiology ; Promoter Regions, Genetic ; Protein Biosynthesis ; RNA, Viral/*chemical synthesis/genetics/physiology ; Receptors, Virus/genetics/immunology/metabolism ; Transcription, Genetic ; Viral Plaque Assay ; Viral Proteins ; Virulence ; Virus Replication
    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
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    Enhanced and delayed stress-induced alcohol drinking in mice lacking functional CRH1 receptors (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-04
    Description: There is a relation between stress and alcohol drinking. We show that the corticotropin-releasing hormone (CRH) system that mediates endocrine and behavioral responses to stress plays a role in the control of long-term alcohol drinking. In mice lacking a functional CRH1 receptor, stress leads to enhanced and progressively increasing alcohol intake. The effect of repeated stress on alcohol drinking behavior appeared with a delay and persisted throughout life. It was associated with an up-regulation of the N-methyl-d-aspartate receptor subunit NR2B. Alterations in the CRH1 receptor gene and adaptional changes in NR2B subunits may constitute a genetic risk factor for stress-induced alcohol drinking and alcoholism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sillaber, Inge -- Rammes, Gerhard -- Zimmermann, Stephan -- Mahal, Beatrice -- Zieglgansberger, Walter -- Wurst, Wolfgang -- Holsboer, Florian -- Spanagel, Rainer -- New York, N.Y. -- Science. 2002 May 3;296(5569):931-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute of Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany. sillaber@mpipsykl.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11988580" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; *Alcohol Drinking ; Alcoholism/*etiology/genetics ; Animals ; Brain/metabolism ; Corticotropin-Releasing Hormone/physiology ; Ethanol/blood ; Female ; Hippocampus/physiology ; In Vitro Techniques ; Male ; Mice ; Mice, Knockout ; Models, Animal ; Mutation ; Receptors, AMPA/metabolism ; Receptors, Corticotropin-Releasing Hormone/*genetics/*physiology ; Receptors, Kainic Acid/metabolism ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Signal Transduction ; Stress, Physiological/physiopathology ; Stress, Psychological/*physiopathology ; Up-Regulation
    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
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    Obesity drug pipeline not so fat (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, Trisha -- New York, N.Y. -- Science. 2003 Feb 7;299(5608):849-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12574616" target="_blank"〉PubMed〈/a〉
    Keywords: Agouti-Related Protein ; Animals ; Anti-Obesity Agents/adverse effects/pharmacology/*therapeutic use ; Appetite/drug effects ; Arcuate Nucleus of Hypothalamus/metabolism ; Ciliary Neurotrophic Factor/therapeutic use ; Clinical Trials as Topic ; Cyclobutanes/adverse effects/therapeutic use ; Energy Intake ; Ghrelin ; Humans ; Hunger/drug effects ; Intercellular Signaling Peptides and Proteins ; Lactones/adverse effects/therapeutic use ; Leptin/metabolism/therapeutic use ; Mice ; Nerve Tissue Proteins/adverse effects/therapeutic use ; Neurons/metabolism ; Neuropeptide Y/metabolism/pharmacology ; Obesity/*drug therapy/metabolism ; Peptide Fragments ; Peptide Hormones/metabolism/pharmacology ; Peptide YY/metabolism/pharmacology ; Phentermine/adverse effects/therapeutic use ; Proteins/metabolism ; Receptors, Corticotropin/metabolism ; Receptors, Melanocortin ; Weight Loss ; alpha-MSH/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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