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  • Animals  (9)
  • American Association for the Advancement of Science (AAAS)  (9)
  • 1
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    Meiotic arrest in the mouse follicle maintained by a Gs protein in the oocyte (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-08-24
    Description: The mammalian ovarian follicle consists of a multilayered complex of somatic cells that surround the oocyte. A signal from the follicle cells keeps the oocyte cell cycle arrested at prophase of meiosis I until luteinizing hormone from the pituitary acts on the follicle cells to release the arrest, causing meiosis to continue. Here we show that meiotic arrest can be released in mice by microinjecting the oocyte within the follicle with an antibody that inhibits the stimulatory heterotrimeric GTP-binding protein Gs. This indicates that Gs activity in the oocyte is required to maintain meiotic arrest within the ovarian follicle and suggests that the follicle may keep the cell cycle arrested by activating Gs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mehlmann, Lisa M -- Jones, Teresa L Z -- Jaffe, Laurinda A -- New York, N.Y. -- Science. 2002 Aug 23;297(5585):1343-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Connecticut Health Center, Farmington, CT 06032, USA. lmehlman@neuron.uchc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12193786" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology ; Cells, Cultured ; Cyclic AMP/metabolism ; Female ; GTP-Binding Protein alpha Subunits, Gi-Go/immunology/physiology ; GTP-Binding Protein alpha Subunits, Gs/antagonists & ; inhibitors/immunology/*physiology ; Hypoxanthine/pharmacology ; *Meiosis ; Mice ; Oocytes/drug effects/metabolism/*physiology ; Ovarian Follicle/*physiology ; Signal Transduction
    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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  • 2
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    Stem cell self-renewal specified by JAK-STAT activation in response to a support cell cue (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-26
    Description: Stem cells generate many differentiated, short-lived cell types, such as blood, skin, and sperm, throughout adult life. Stem cells maintain a long-term capacity to divide, producing daughter cells that either self-renew or initiate differentiation. Although the surrounding microenvironment or "niche" influences stem cell fate decisions, few signals that emanate from the niche to specify stem cell self-renewal have been identified. Here we demonstrate that the apical hub cells in the Drosophila testis act as a cellular niche that supports stem cell self-renewal. Hub cells express the ligand Unpaired (Upd), which activates the Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway in adjacent germ cells to specify self-renewal and continual maintenance of the germ line stem cell population.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kiger, A A -- Jones, D L -- Schulz, C -- Rogers, M B -- Fuller, M T -- GM07790-22/GM/NIGMS NIH HHS/ -- HD07493/HD/NICHD NIH HHS/ -- P01-DK53074/DK/NIDDK NIH HHS/ -- R01 GM078176/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2542-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752574" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cues ; DNA-Binding Proteins/genetics/*metabolism ; Drosophila/cytology/embryology/genetics/*physiology ; Drosophila Proteins/*metabolism ; Germ Cells/*physiology ; Glycoproteins/*metabolism ; Janus Kinases ; Ligands ; Male ; Mutation ; Protein-Tyrosine Kinases/genetics/*metabolism ; STAT Transcription Factors ; Signal Transduction ; Spermatocytes/cytology/physiology ; Spermatogenesis ; Stem Cells/cytology/*physiology ; Testis/cytology/metabolism ; Trans-Activators/genetics/*metabolism ; *Transcription Factors
    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
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    Orbitofrontal cortex supports behavior and learning using inferred but not cached values (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-11-20
    Description: Computational and learning theory models propose that behavioral control reflects value that is both cached (computed and stored during previous experience) and inferred (estimated on the fly on the basis of knowledge of the causal structure of the environment). The latter is thought to depend on the orbitofrontal cortex. Yet some accounts propose that the orbitofrontal cortex contributes to behavior by signaling "economic" value, regardless of the associative basis of the information. We found that the orbitofrontal cortex is critical for both value-based behavior and learning when value must be inferred but not when a cached value is sufficient. The orbitofrontal cortex is thus fundamental for accessing model-based representations of the environment to compute value rather than for signaling value per se.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3592380/" 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/PMC3592380/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, Joshua L -- Esber, Guillem R -- McDannald, Michael A -- Gruber, Aaron J -- Hernandez, Alex -- Mirenzi, Aaron -- Schoenbaum, Geoffrey -- F32 DA031517/DA/NIDA NIH HHS/ -- F32-031517/PHS HHS/ -- R01 DA015718/DA/NIDA NIH HHS/ -- R01-DA015718/DA/NIDA NIH HHS/ -- ZIA DA000587-01/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 16;338(6109):953-6. doi: 10.1126/science.1227489.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn Street, Baltimore, MD 21201, USA. josh.jones@nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23162000" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Animal ; Conditioning (Psychology) ; Cues ; Frontal Lobe/*physiology ; *Learning ; Male ; Rats ; Rats, Inbred LEC
    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
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    Orientation of asymmetric stem cell division by the APC tumor suppressor and centrosome (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-13
    Description: Stem cell self-renewal can be specified by local signals from the surrounding microenvironment, or niche. However, the relation between the niche and the mechanisms that ensure the correct balance between stem cell self-renewal and differentiation is poorly understood. Here, we show that dividing Drosophila male germline stem cells use intracellular mechanisms involving centrosome function and cortically localized Adenomatous Polyposis Coli tumor suppressor protein to orient mitotic spindles perpendicular to the niche, ensuring a reliably asymmetric outcome in which one daughter cell remains in the niche and self-renews stem cell identity, whereas the other, displaced away, initiates differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamashita, Yukiko M -- Jones, D Leanne -- Fuller, Margaret T -- 1P01 DK53074/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 12;301(5639):1547-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12970569" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Arabidopsis Proteins ; Cadherins/metabolism ; Calcium-Binding Proteins/*metabolism ; Cell Count ; Cell Differentiation ; *Cell Division ; Cell Polarity ; Centrosome/*physiology ; Cytoskeletal Proteins/metabolism ; Drosophila/*cytology/genetics/physiology ; Drosophila Proteins/*metabolism ; Germ Cells/cytology/*physiology ; Homeodomain Proteins/genetics/physiology ; Male ; Mutation ; Spindle Apparatus/physiology ; Stem Cells/cytology/*physiology ; Testis/cytology ; Trans-Activators/metabolism ; Tubulin/metabolism ; Tumor Suppressor Proteins/*metabolism ; beta Catenin
    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
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    Protection of cattle against rinderpest with vaccinia virus recombinants expressing the HA or F gene (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-11-18
    Description: Rinderpest is a highly contagious ruminant viral disease manifested by a rapid course and greater than 90% mortality. Infectious vaccinia virus recombinants were constructed that express either the hemagglutinin or the fusion gene of rinderpest virus. All cattle vaccinated with either recombinant or with the combined recombinants produced neutralizing antibodies against rinderpest virus and were protected against the disease when challenged with more than 1000 times the lethal dose of the virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yilma, T -- Hsu, D -- Jones, L -- Owens, S -- Grubman, M -- Mebus, C -- Yamanaka, M -- Dale, B -- New York, N.Y. -- Science. 1988 Nov 18;242(4881):1058-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Veterinary Microbiology and Immunology, University of California, Davis 95616.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3194758" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cloning, Molecular ; Hemagglutinins, Viral/genetics/*immunology ; Immunologic Memory ; Rinderpest/*prevention & control ; Vaccination ; *Vaccines ; *Vaccines, Synthetic ; Vaccinia virus/genetics ; Viral Fusion Proteins/genetics/*immunology
    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
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    Involvement of platelet-endothelial cell adhesion molecule-1 in neutrophil recruitment in vivo (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-03
    Description: During inflammation, neutrophils migrate from the vascular lumen into extravascular sites. In vitro assays have suggested that platelet-endothelial cell adhesion molecule-1 [PECAM-1 (CD31)], a member of the immunoglobulin superfamily, is required for the transmigration of neutrophils across endothelial monolayers. Antibody to human PECAM-1, which cross-reacts with rat PECAM-1, was found to block not only in vivo accumulation of rat neutrophils into the peritoneal cavity and the alveolar compartment of the lung but also neutrophil accumulation in human skin grafts transplanted onto immunodeficient mice. On the basis of these findings in three different models of inflammation, it appears that PECAM-1 is required for neutrophil transmigration in vivo and may thus be a potential therapeutic target.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vaporciyan, A A -- DeLisser, H M -- Yan, H C -- Mendiguren, I I -- Thom, S R -- Jones, M L -- Ward, P A -- Albelda, S M -- HL-31963/HL/NHLBI NIH HHS/ -- HL-430020-02/HL/NHLBI NIH HHS/ -- HL-46311/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Dec 3;262(5139):1580-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Michigan Medical School, Ann Arbor 48109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8248808" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/pharmacology ; Antigens, CD31 ; Antigens, Differentiation, Myelomonocytic/immunology/*physiology ; Cell Adhesion Molecules/immunology/*physiology ; Cell Movement/physiology ; Chemotaxis, Leukocyte/physiology ; Endothelium/immunology ; Humans ; Immune Complex Diseases/immunology ; Membrane Glycoproteins/immunology/*physiology ; Mice ; Mice, SCID ; Neutrophils/*physiology ; Peritoneal Cavity/cytology ; Rats ; Skin Transplantation/immunology ; Transplantation, Heterologous/immunology
    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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    Functional CpG methylation system in a social insect (2006)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2006-10-28
    Description: DNA methylation systems are well characterized in vertebrates, but methylation in Drosophila melanogaster and other invertebrates remains controversial. Using the recently sequenced honey bee genome, we present a bioinformatic, molecular, and biochemical characterization of a functional DNA methylation system in an insect. We report on catalytically active orthologs of the vertebrate DNA methyltransferases Dnmt1 and Dnmt3a and b, two isoforms that contain a methyl-DNA binding domain, genomic 5-methyl-deoxycytosine, and CpG-methylated genes. The honey bee provides an opportunity to study the roles of methylation in social contexts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Ying -- Jorda, Mireia -- Jones, Peter L -- Maleszka, Ryszard -- Ling, Xu -- Robertson, Hugh M -- Mizzen, Craig A -- Peinado, Miguel A -- Robinson, Gene E -- New York, N.Y. -- Science. 2006 Oct 27;314(5799):645-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17068262" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Composition ; Bees/enzymology/*genetics/*metabolism ; Computational Biology ; DNA/chemistry/metabolism ; DNA (Cytosine-5-)-Methyltransferase/chemistry/*genetics/*metabolism ; *DNA Methylation ; DNA-Binding Proteins/genetics/metabolism ; Dinucleoside Phosphates/*metabolism ; Genes, Insect ; Genome, Insect ; Insect Proteins/genetics/metabolism ; Molecular Sequence Data
    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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    Risky ripples allow bats and frogs to eavesdrop on a multisensory sexual display (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-01-25
    Description: Animal displays are often perceived by intended and unintended receivers in more than one sensory system. In addition, cues that are an incidental consequence of signal production can also be perceived by different receivers, even when the receivers use different sensory systems to perceive them. Here we show that the vocal responses of male tungara frogs (Physalaemus pustulosus) increase twofold when call-induced water ripples are added to the acoustic component of a rival's call. Hunting bats (Trachops cirrhosus) can echolocate this signal by-product and prefer to attack model frogs when ripples are added to the acoustic component of the call. This study illustrates how the perception of a signal by-product by intended and unintended receivers through different sensory systems generates both costs and benefits for the signaler.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Halfwerk, W -- Jones, P L -- Taylor, R C -- Ryan, M J -- Page, R A -- New York, N.Y. -- Science. 2014 Jan 24;343(6169):413-6. doi: 10.1126/science.1244812.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Republic of Panama.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24458640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura/*physiology ; *Auditory Perception ; Chiroptera/*physiology ; *Courtship ; *Echolocation ; Female ; Male ; *Mating Preference, Animal ; Sound ; *Vibration ; *Vocalization, Animal ; Water
    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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    Evidence for a vesicular transport mechanism in hepatocytes for biliary secretion of immunoglobulin A (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-06-13
    Description: Quantitative electron microscopic autoradiography and diaminobenzidine cytochemistry provide evidence for an uptake and vesicular transport mechanism for iodine-125-labeled immunoglobulin A from plasma to bile by hepatocytes in vivo. The data confirm the existence of a hepatobiliary pathway for secretion of immunoglobulin A into the intestine and are consistent with a vesicular transport mechanism for biliary proteins within liver parenchymal cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Renston, R H -- Jones, A L -- Christiansen, W D -- Hradek, G T -- Underdown, B J -- New York, N.Y. -- Science. 1980 Jun 13;208(4449):1276-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7375938" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Bile/*immunology ; Biological Transport ; Cell Membrane/metabolism ; Cytoplasm/metabolism ; Immunoglobulin A/*metabolism ; Immunoglobulin A, Secretory/*metabolism ; Liver/immunology/*secretion ; Male ; Organoids/metabolism ; Rats ; Secretory Component/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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