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  • Mice, Inbred C57BL  (19)
  • Phylogeny  (14)
  • American Association for the Advancement of Science (AAAS)  (33)
  • 2010-2014  (33)
  • 1980-1984
  • 1940-1944
  • 2012  (33)
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  • 2010-2014  (33)
  • 1980-1984
  • 1940-1944
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  • 1
    Publication Date: 2012-03-31
    Description: Rapamycin, an inhibitor of mechanistic target of rapamycin complex 1 (mTORC1), extends the life spans of yeast, flies, and mice. Calorie restriction, which increases life span and insulin sensitivity, is proposed to function by inhibition of mTORC1, yet paradoxically, chronic administration of rapamycin substantially impairs glucose tolerance and insulin action. We demonstrate that rapamycin disrupted a second mTOR complex, mTORC2, in vivo and that mTORC2 was required for the insulin-mediated suppression of hepatic gluconeogenesis. Further, decreased mTORC1 signaling was sufficient to extend life span independently from changes in glucose homeostasis, as female mice heterozygous for both mTOR and mLST8 exhibited decreased mTORC1 activity and extended life span but had normal glucose tolerance and insulin sensitivity. Thus, mTORC2 disruption is an important mediator of the effects of rapamycin in vivo.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3324089/" 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/PMC3324089/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamming, Dudley W -- Ye, Lan -- Katajisto, Pekka -- Goncalves, Marcus D -- Saitoh, Maki -- Stevens, Deanna M -- Davis, James G -- Salmon, Adam B -- Richardson, Arlan -- Ahima, Rexford S -- Guertin, David A -- Sabatini, David M -- Baur, Joseph A -- 1F32AG032833-01A1/AG/NIA NIH HHS/ -- CA129105/CA/NCI NIH HHS/ -- F32 AG032833/AG/NIA NIH HHS/ -- P30DK19525/DK/NIDDK NIH HHS/ -- R01 CA129105/CA/NCI NIH HHS/ -- R01 CA129105-05/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Mar 30;335(6076):1638-43. doi: 10.1126/science.1215135.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22461615" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue, White/metabolism ; Animals ; Carrier Proteins/genetics/metabolism ; Female ; Gluconeogenesis ; Glucose/metabolism ; Glucose Clamp Technique ; Homeostasis ; Insulin/administration & dosage/blood ; *Insulin Resistance ; Liver/metabolism ; *Longevity ; Male ; Mice ; Mice, Inbred C57BL ; Multiprotein Complexes ; Muscle, Skeletal/metabolism ; Phosphorylation ; Proteins/antagonists & inhibitors/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Signal Transduction ; Sirolimus/*pharmacology ; TOR Serine-Threonine Kinases/genetics/metabolism
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  • 2
    Publication Date: 2012-07-07
    Description: Obstruction of critical blood vessels due to thrombosis or embolism is a leading cause of death worldwide. Here, we describe a biomimetic strategy that uses high shear stress caused by vascular narrowing as a targeting mechanism--in the same way platelets do--to deliver drugs to obstructed blood vessels. Microscale aggregates of nanoparticles were fabricated to break up into nanoscale components when exposed to abnormally high fluid shear stress. When coated with tissue plasminogen activator and administered intravenously in mice, these shear-activated nanotherapeutics induce rapid clot dissolution in a mesenteric injury model, restore normal flow dynamics, and increase survival in an otherwise fatal mouse pulmonary embolism model. This biophysical strategy for drug targeting, which lowers required doses and minimizes side effects while maximizing drug efficacy, offers a potential new approach for treatment of life-threatening diseases that result from acute vascular occlusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korin, Netanel -- Kanapathipillai, Mathumai -- Matthews, Benjamin D -- Crescente, Marilena -- Brill, Alexander -- Mammoto, Tadanori -- Ghosh, Kaustabh -- Jurek, Samuel -- Bencherif, Sidi A -- Bhatta, Deen -- Coskun, Ahmet U -- Feldman, Charles L -- Wagner, Denisa D -- Ingber, Donald E -- New York, N.Y. -- Science. 2012 Aug 10;337(6095):738-42. doi: 10.1126/science.1217815. Epub 2012 Jul 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22767894" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomimetic Materials ; Blood Circulation ; Drug Delivery Systems/*methods ; Fibrinolytic Agents/*administration & dosage ; Hemodynamics ; Hemorheology ; Lactic Acid ; Male ; Mesenteric Arteries ; Mesenteric Vascular Occlusion/*drug therapy ; Mice ; Mice, Inbred C57BL ; Microfluidic Analytical Techniques ; Models, Anatomic ; *Nanoparticles ; Polyglycolic Acid ; Pulmonary Embolism/*drug therapy ; Stress, Mechanical ; Thrombosis/*drug therapy/prevention & control ; Tissue Plasminogen Activator/*administration & dosage
    Print ISSN: 0036-8075
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  • 3
    Publication Date: 2012-06-08
    Description: The intestinal microflora, typically equated with bacteria, influences diseases such as obesity and inflammatory bowel disease. Here, we show that the mammalian gut contains a rich fungal community that interacts with the immune system through the innate immune receptor Dectin-1. Mice lacking Dectin-1 exhibited increased susceptibility to chemically induced colitis, which was the result of altered responses to indigenous fungi. In humans, we identified a polymorphism in the gene for Dectin-1 (CLEC7A) that is strongly linked to a severe form of ulcerative colitis. Together, our findings reveal a eukaryotic fungal community in the gut (the "mycobiome") that coexists with bacteria and substantially expands the repertoire of organisms interacting with the intestinal immune system to influence health and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3432565/" 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/PMC3432565/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iliev, Iliyan D -- Funari, Vincent A -- Taylor, Kent D -- Nguyen, Quoclinh -- Reyes, Christopher N -- Strom, Samuel P -- Brown, Jordan -- Becker, Courtney A -- Fleshner, Phillip R -- Dubinsky, Marla -- Rotter, Jerome I -- Wang, Hanlin L -- McGovern, Dermot P B -- Brown, Gordon D -- Underhill, David M -- 086558/Wellcome Trust/United Kingdom -- AI071116/AI/NIAID NIH HHS/ -- P01-DK046763/DK/NIDDK NIH HHS/ -- R01 DK093426/DK/NIDDK NIH HHS/ -- UL1 RR033176/RR/NCRR NIH HHS/ -- UL1 TR000124/TR/NCATS NIH HHS/ -- UL1RR033176/RR/NCRR NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Jun 8;336(6086):1314-7. doi: 10.1126/science.1221789. Epub 2012 Jun 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22674328" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Fungal/blood ; Candida tropicalis/immunology/isolation & purification/pathogenicity/physiology ; Colitis, Ulcerative/chemically induced/*immunology/*microbiology ; Colon/immunology/*microbiology ; Colony Count, Microbial ; Dextran Sulfate ; Disease Susceptibility ; Female ; Fungi/classification/*immunology/isolation & purification/*physiology ; Haplotypes ; Humans ; Immunity, Innate ; Immunity, Mucosal ; Intestinal Mucosa/immunology/*microbiology ; Intestines/immunology/microbiology ; Lectins, C-Type/deficiency/*genetics/*metabolism ; Metagenome ; Mice ; Mice, Inbred C57BL ; Polymorphism, Single Nucleotide
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  • 4
    Publication Date: 2012-06-08
    Description: The mammalian intestinal tract is colonized by trillions of beneficial commensal bacteria that are anatomically restricted to specific niches. However, the mechanisms that regulate anatomical containment remain unclear. Here, we show that interleukin-22 (IL-22)-producing innate lymphoid cells (ILCs) are present in intestinal tissues of healthy mammals. Depletion of ILCs resulted in peripheral dissemination of commensal bacteria and systemic inflammation, which was prevented by administration of IL-22. Disseminating bacteria were identified as Alcaligenes species originating from host lymphoid tissues. Alcaligenes was sufficient to promote systemic inflammation after ILC depletion in mice, and Alcaligenes-specific systemic immune responses were associated with Crohn's disease and progressive hepatitis C virus infection in patients. Collectively, these data indicate that ILCs regulate selective containment of lymphoid-resident bacteria to prevent systemic inflammation associated with chronic diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3659421/" 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/PMC3659421/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sonnenberg, Gregory F -- Monticelli, Laurel A -- Alenghat, Theresa -- Fung, Thomas C -- Hutnick, Natalie A -- Kunisawa, Jun -- Shibata, Naoko -- Grunberg, Stephanie -- Sinha, Rohini -- Zahm, Adam M -- Tardif, Melanie R -- Sathaliyawala, Taheri -- Kubota, Masaru -- Farber, Donna L -- Collman, Ronald G -- Shaked, Abraham -- Fouser, Lynette A -- Weiner, David B -- Tessier, Philippe A -- Friedman, Joshua R -- Kiyono, Hiroshi -- Bushman, Frederic D -- Chang, Kyong-Mi -- Artis, David -- 2-P30 CA016520/CA/NCI NIH HHS/ -- AI061570/AI/NIAID NIH HHS/ -- AI074878/AI/NIAID NIH HHS/ -- AI083480/AI/NIAID NIH HHS/ -- AI087990/AI/NIAID NIH HHS/ -- AI095466/AI/NIAID NIH HHS/ -- AI095608/AI/NIAID NIH HHS/ -- AI47619/AI/NIAID NIH HHS/ -- K08 DK093784/DK/NIDDK NIH HHS/ -- K08-DK093784/DK/NIDDK NIH HHS/ -- P30 AI 045008/AI/NIAID NIH HHS/ -- P30DK50306/DK/NIDDK NIH HHS/ -- R01 AI061570/AI/NIAID NIH HHS/ -- R01 AI074878/AI/NIAID NIH HHS/ -- R01 AI095466/AI/NIAID NIH HHS/ -- R01 AI102942/AI/NIAID NIH HHS/ -- R21 AI083480/AI/NIAID NIH HHS/ -- R21 AI087990/AI/NIAID NIH HHS/ -- T32 AI007532/AI/NIAID NIH HHS/ -- T32 AI055428/AI/NIAID NIH HHS/ -- T32 RR007063/RR/NCRR NIH HHS/ -- T32-AI007532/AI/NIAID NIH HHS/ -- T32-AI055428/AI/NIAID NIH HHS/ -- T32-RR007063/RR/NCRR NIH HHS/ -- U01 AI095608/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2012 Jun 8;336(6086):1321-5. doi: 10.1126/science.1222551. Epub 2012 Jun 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22674331" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Alcaligenes/immunology/isolation & purification/*physiology ; Animals ; Bacterial Translocation ; Crohn Disease/immunology/microbiology ; Hepatitis C, Chronic/immunology/microbiology ; Humans ; Immunity, Innate ; Inflammation ; Interleukins/administration & dosage/biosynthesis/*immunology ; Intestines/*immunology/microbiology ; Leukocyte L1 Antigen Complex/metabolism ; Liver/microbiology ; Lymph Nodes/immunology ; Lymphocytes/*immunology ; Lymphoid Tissue/*immunology/*microbiology ; Macaca mulatta ; Mice ; Mice, Inbred C57BL ; Middle Aged ; Spleen/microbiology ; Young Adult
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  • 5
    Publication Date: 2012-02-22
    Description: The primary endosymbiotic origin of the plastid in eukaryotes more than 1 billion years ago led to the evolution of algae and plants. We analyzed draft genome and transcriptome data from the basally diverging alga Cyanophora paradoxa and provide evidence for a single origin of the primary plastid in the eukaryote supergroup Plantae. C. paradoxa retains ancestral features of starch biosynthesis, fermentation, and plastid protein translocation common to plants and algae but lacks typical eukaryotic light-harvesting complex proteins. Traces of an ancient link to parasites such as Chlamydiae were found in the genomes of C. paradoxa and other Plantae. Apparently, Chlamydia-like bacteria donated genes that allow export of photosynthate from the plastid and its polymerization into storage polysaccharide in the cytosol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Price, Dana C -- Chan, Cheong Xin -- Yoon, Hwan Su -- Yang, Eun Chan -- Qiu, Huan -- Weber, Andreas P M -- Schwacke, Rainer -- Gross, Jeferson -- Blouin, Nicolas A -- Lane, Chris -- Reyes-Prieto, Adrian -- Durnford, Dion G -- Neilson, Jonathan A D -- Lang, B Franz -- Burger, Gertraud -- Steiner, Jurgen M -- Loffelhardt, Wolfgang -- Meuser, Jonathan E -- Posewitz, Matthew C -- Ball, Steven -- Arias, Maria Cecilia -- Henrissat, Bernard -- Coutinho, Pedro M -- Rensing, Stefan A -- Symeonidi, Aikaterini -- Doddapaneni, Harshavardhan -- Green, Beverley R -- Rajah, Veeran D -- Boore, Jeffrey -- Bhattacharya, Debashish -- MSP-14226/Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2012 Feb 17;335(6070):843-7. doi: 10.1126/science.1213561.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22344442" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Evolution ; Cyanobacteria/genetics ; Cyanophora/*genetics ; *Evolution, Molecular ; Gene Transfer, Horizontal ; Genes, Bacterial ; *Genome, Plant ; Molecular Sequence Data ; Photosynthesis/*genetics ; Phylogeny ; Symbiosis
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  • 6
    Publication Date: 2012-10-09
    Description: Brain-derived neurotrophic factor (BDNF) is a key positive regulator of neural plasticity, promoting, for example, the actions of stimulant drugs of abuse such as cocaine. We discovered a surprising opposite role for BDNF in countering responses to chronic morphine exposure. The suppression of BDNF in the ventral tegmental area (VTA) enhanced the ability of morphine to increase dopamine (DA) neuron excitability and promote reward. In contrast, optical stimulation of VTA DA terminals in nucleus accumbens (NAc) completely reversed the suppressive effect of BDNF on morphine reward. Furthermore, we identified numerous genes in the NAc, a major target region of VTA DA neurons, whose regulation by BDNF in the context of chronic morphine exposure mediated this counteractive function. These findings provide insight into the molecular basis of morphine-induced neuroadaptations in the brain's reward circuitry.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3547365/" 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/PMC3547365/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koo, Ja Wook -- Mazei-Robison, Michelle S -- Chaudhury, Dipesh -- Juarez, Barbara -- LaPlant, Quincey -- Ferguson, Deveroux -- Feng, Jian -- Sun, Haosheng -- Scobie, Kimberly N -- Damez-Werno, Diane -- Crumiller, Marshall -- Ohnishi, Yoshinori N -- Ohnishi, Yoko H -- Mouzon, Ezekiell -- Dietz, David M -- Lobo, Mary Kay -- Neve, Rachael L -- Russo, Scott J -- Han, Ming-Hu -- Nestler, Eric J -- K99 MH094405/MH/NIMH NIH HHS/ -- P01 DA008227/DA/NIDA NIH HHS/ -- R01 DA014133/DA/NIDA NIH HHS/ -- R01 MH092306/MH/NIMH NIH HHS/ -- T32 MH087004/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2012 Oct 5;338(6103):124-8. doi: 10.1126/science.1222265.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fishberg Department of Neuroscience and Friedman Brain Institute, Mount Sinai School of Medicine, New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23042896" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain-Derived Neurotrophic Factor/genetics/*physiology ; Dopamine/metabolism ; Dopaminergic Neurons/*drug effects/physiology ; Gene Expression Regulation ; Gene Knockdown Techniques ; Gene Knockout Techniques ; Male ; Mice ; Mice, Inbred C57BL ; Morphine/*pharmacology ; Morphine Dependence/genetics/*physiopathology ; Nucleus Accumbens/drug effects/physiopathology ; Photic Stimulation ; Receptor, trkB/genetics/physiology ; Ventral Tegmental Area/*drug effects/physiology
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  • 7
    Publication Date: 2012-02-11
    Description: Alzheimer's disease (AD) is associated with impaired clearance of beta-amyloid (Abeta) from the brain, a process normally facilitated by apolipoprotein E (apoE). ApoE expression is transcriptionally induced through the action of the nuclear receptors peroxisome proliferator-activated receptor gamma and liver X receptors in coordination with retinoid X receptors (RXRs). Oral administration of the RXR agonist bexarotene to a mouse model of AD resulted in enhanced clearance of soluble Abeta within hours in an apoE-dependent manner. Abeta plaque area was reduced more than 50% within just 72 hours. Furthermore, bexarotene stimulated the rapid reversal of cognitive, social, and olfactory deficits and improved neural circuit function. Thus, RXR activation stimulates physiological Abeta clearance mechanisms, resulting in the rapid reversal of a broad range of Abeta-induced deficits.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3651582/" 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/PMC3651582/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cramer, Paige E -- Cirrito, John R -- Wesson, Daniel W -- Lee, C Y Daniel -- Karlo, J Colleen -- Zinn, Adriana E -- Casali, Brad T -- Restivo, Jessica L -- Goebel, Whitney D -- James, Michael J -- Brunden, Kurt R -- Wilson, Donald A -- Landreth, Gary E -- AG030482-03S1/AG/NIA NIH HHS/ -- DC003906/DC/NIDCD NIH HHS/ -- K01 AG029524/AG/NIA NIH HHS/ -- P50-AG005681/AG/NIA NIH HHS/ -- R01 AG030482/AG/NIA NIH HHS/ -- R01 AG037693/AG/NIA NIH HHS/ -- R01 DC003906/DC/NIDCD NIH HHS/ -- R01-AG037693/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2012 Mar 23;335(6075):1503-6. doi: 10.1126/science.1217697. Epub 2012 Feb 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22323736" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*drug therapy/*metabolism ; Amyloid beta-Peptides/*metabolism ; Amyloidosis/drug therapy/metabolism ; Animals ; Apolipoproteins E/*metabolism ; Astrocytes/drug effects/metabolism ; Behavior, Animal/drug effects ; Brain/drug effects/*metabolism ; Disease Models, Animal ; Extracellular Fluid/drug effects/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Microglia/drug effects/metabolism ; Molecular Targeted Therapy ; Odors ; Olfactory Pathways/drug effects/physiology ; Orphan Nuclear Receptors/metabolism ; PPAR gamma/metabolism ; Phagocytosis ; Plaque, Amyloid/drug therapy ; Retinoid X Receptors/agonists/metabolism ; Tetrahydronaphthalenes/*pharmacology/*therapeutic use
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  • 8
    Publication Date: 2012-03-24
    Description: Phenotypic variability in genetic disease is usually attributed to genetic background variation or environmental influence. Here, we show that deletion of a single gene, Trim28 (Kap1 or Tif1beta), from the maternal germ line alone, on an otherwise identical genetic background, results in severe phenotypic and epigenetic variability that leads to embryonic lethality. We identify early and minute epigenetic variations in blastomeres of the preimplantation embryo of these animals, suggesting that the embryonic lethality may result from the misregulation of genomic imprinting in mice lacking maternal Trim28. Our results reveal the long-range effects of a maternal gene deletion on epigenetic memory and illustrate the delicate equilibrium of maternal and zygotic factors during nuclear reprogramming.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Messerschmidt, Daniel M -- de Vries, Wilhelmine -- Ito, Mitsuteru -- Solter, Davor -- Ferguson-Smith, Anne -- Knowles, Barbara B -- 079249/Wellcome Trust/United Kingdom -- 095606/Wellcome Trust/United Kingdom -- MR/J001597/1/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Mar 23;335(6075):1499-502. doi: 10.1126/science.1216154.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mammalian Development Group, Institute of Medical Biology, Singapore.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22442485" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/physiology ; DNA Methylation ; Down-Regulation ; *Embryo Loss ; Embryo, Mammalian/*physiology ; Embryonic Development ; *Epigenesis, Genetic ; Female ; Gene Expression Regulation, Developmental ; *Genomic Imprinting ; Insulin-Like Growth Factor II/genetics/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Nuclear Proteins/*genetics/*physiology ; Oligonucleotide Array Sequence Analysis ; Oocytes/*physiology ; Phenotype ; RNA, Long Noncoding ; RNA, Untranslated/genetics/metabolism ; Repressor Proteins/*genetics/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2012-01-10
    Description: Complex worker caste systems have contributed to the evolutionary success of advanced ant societies; however, little is known about the developmental processes underlying their origin and evolution. We combined hormonal manipulation, gene expression, and phylogenetic analyses with field observations to understand how novel worker subcastes evolve. We uncovered an ancestral developmental potential to produce a "supersoldier" subcaste that has been actualized at least two times independently in the hyperdiverse ant genus Pheidole. This potential has been retained and can be environmentally induced throughout the genus. Therefore, the retention and induction of this potential have facilitated the parallel evolution of supersoldiers through a process known as genetic accommodation. The recurrent induction of ancestral developmental potential may facilitate the adaptive and parallel evolution of phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rajakumar, Rajendhran -- San Mauro, Diego -- Dijkstra, Michiel B -- Huang, Ming H -- Wheeler, Diana E -- Hiou-Tim, Francois -- Khila, Abderrahman -- Cournoyea, Michael -- Abouheif, Ehab -- New York, N.Y. -- Science. 2012 Jan 6;335(6064):79-82. doi: 10.1126/science.1211451.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, McGill University, 1205 Avenue Dr. Penfield, Montreal, Quebec, Canada, H3A 1B1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22223805" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ants/*genetics/growth & development/physiology ; *Biological Evolution ; Environment ; Female ; Genes, Insect ; Larva/growth & development ; Male ; Methoprene/pharmacology ; Molecular Sequence Data ; Phenotype ; Phylogeny ; Selection, Genetic ; Social Behavior ; Wings, Animal/growth & development
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  • 10
    Publication Date: 2012-07-24
    Description: Diseases of the esophageal epithelium (EE), such as reflux esophagitis and cancer, are rising in incidence. Despite this, the cellular behaviors underlying EE homeostasis and repair remain controversial. Here, we show that in mice, EE is maintained by a single population of cells that divide stochastically to generate proliferating and differentiating daughters with equal probability. In response to challenge with all-trans retinoic acid (atRA), the balance of daughter cell fate is unaltered, but the rate of cell division increases. However, after wounding, cells reversibly switch to producing an excess of proliferating daughters until the wound has closed. Such fate-switching enables a single progenitor population to both maintain and repair tissue without the need for a "reserve" slow-cycling stem cell pool.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3527005/" 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/PMC3527005/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doupe, David P -- Alcolea, Maria P -- Roshan, Amit -- Zhang, Gen -- Klein, Allon M -- Simons, Benjamin D -- Jones, Philip H -- 079249/Wellcome Trust/United Kingdom -- 092096/Wellcome Trust/United Kingdom -- G0601740/Medical Research Council/United Kingdom -- G0700600/1/National Centre for the Replacement, Refinement and Reduction of Animals in Research/United Kingdom -- G0800784/Medical Research Council/United Kingdom -- MC_U105370181/Medical Research Council/United Kingdom -- U.1053.00.010(70181)/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Aug 31;337(6098):1091-3. doi: 10.1126/science.1218835. Epub 2012 Jul 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) Cancer Cell Unit, Hutchison-MRC Research Centre, Cambridge, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22821983" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers/analysis ; Cell Differentiation/drug effects ; Cell Division/drug effects ; Cell Proliferation/drug effects ; Cells, Cultured ; Doxycycline/pharmacology ; Epithelial Cells/*physiology ; Epithelium/drug effects/metabolism/*physiology ; Esophagus/*cytology/*physiology ; Green Fluorescent Proteins/biosynthesis ; Histones/biosynthesis ; Mice ; Mice, Inbred C57BL ; Recombinant Fusion Proteins/biosynthesis ; *Regeneration ; Stem Cells/metabolism/*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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