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  • 1
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    Colossal negative thermal expansion induced by magnetic phase competition on frustrated lattices in Laves phase compound (Hf,Ta)Fe_{2} (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-06-08
    Description: Author(s): B. Li, X. H. Luo, H. Wang, W. J. Ren, S. Yano, C.-W. Wang, J. S. Gardner, K.-D. Liss, P. Miao, S.-H. Lee, T. Kamiyama, R. Q. Wu, Y. Kawakita, and Z. D. Zhang Competition between ferromagnetic and antiferromagnetic phases on frustrated lattices in hexagonal Laves phase compound Hf 0.86 Ta 0.14 Fe 2 is investigated by using neutron diffraction as a function of temperature and magnetic fields and density-functional-theory calculations. At 325 K, the compound ord… [Phys. Rev. B 93, 224405] Published Mon Jun 06, 2016
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Impaired cued and contextual memory in NPAS2-deficient mice (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-24
    Description: Neuronal PAS domain protein 2 (NPAS2) is a basic helix-loop-helix (bHLH) PAS domain transcription factor expressed in multiple regions of the vertebrate brain. Targeted insertion of a beta-galactosidase reporter gene (lacZ) resulted in the production of an NPAS2-lacZ fusion protein and an altered form of NPAS2 lacking the bHLH domain. The neuroanatomical expression pattern of NPAS2-lacZ was temporally and spatially coincident with formation of the mature frontal association/limbic forebrain pathway. NPAS2-deficient mice were subjected to a series of behavioral tests and were found to exhibit deficits in the long-term memory arm of the cued and contextual fear task. Thus, NPAS2 may serve a dedicated regulatory role in the acquisition of specific types of memory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, J A -- Zhang, D -- Estill, S J -- Michnoff, C -- Rutter, J -- Reick, M -- Scott, K -- Diaz-Arrastia, R -- McKnight, S L -- AG12297/AG/NIA NIH HHS/ -- AG16450/AG/NIA NIH HHS/ -- NS01763/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Jun 23;288(5474):2226-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10864874" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning ; Basic Helix-Loop-Helix Transcription Factors ; Behavior, Animal ; Brain/metabolism/*physiology ; Conditioning (Psychology) ; Cues ; Fear ; Gene Targeting ; Helix-Loop-Helix Motifs ; Learning/*physiology ; Limbic System/metabolism/physiology ; Male ; Memory/*physiology ; Mice ; Nerve Tissue Proteins/chemistry/genetics/*physiology ; Prosencephalon/metabolism/physiology ; Recombinant Fusion Proteins/chemistry/metabolism ; Touch ; Transcription Factors/chemistry/genetics/*physiology ; Transcriptional Activation ; Transfection ; beta-Galactosidase/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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  • 3
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    Spermiogenesis deficiency in mice lacking the Trf2 gene (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-16
    Description: The discovery of TATA-binding protein-related factors (TRFs) has suggested alternative mechanisms for gene-specific transcriptional regulation and raised interest in their biological functions. In contrast to recent observations of an embryonic lethal phenotype for TRF2 inactivation in Caenorhabditis elegans and Xenopus laevis, we found that Trf2-deficient mice are viable. However, Trf2-/- mice are sterile because of a severe defect in spermiogenesis. Postmeiotic round spermatids advance at most to step 7 of differentiation but fail to progress to the elongated form, and gene-specific transcription deficiencies were identified. We speculate that mammals may have evolved more specialized TRF2 functions in the testis that involve transcriptional regulation of genes essential for spermiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, D -- Penttila, T L -- Morris, P L -- Teichmann, M -- Roeder, R G -- New York, N.Y. -- Science. 2001 May 11;292(5519):1153-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352070" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Differentiation ; Cell Size ; DNA-Binding Proteins/*deficiency/genetics/*physiology ; Female ; *Gene Deletion ; Gene Expression Regulation, Developmental ; Gene Targeting ; Genotype ; Infertility, Male/genetics/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Organ Size ; RNA, Messenger/genetics/metabolism ; Spermatogenesis/*genetics ; Spermatozoa/metabolism/pathology ; Telomeric Repeat Binding Protein 2 ; Testis/abnormalities/metabolism/pathology
    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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    Presenilins are essential for regulating neurotransmitter release (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-07-31
    Description: Mutations in the presenilin genes are the main cause of familial Alzheimer's disease. Loss of presenilin activity and/or accumulation of amyloid-beta peptides have been proposed to mediate the pathogenesis of Alzheimer's disease by impairing synaptic function. However, the precise site and nature of the synaptic dysfunction remain unknown. Here we use a genetic approach to inactivate presenilins conditionally in either presynaptic (CA3) or postsynaptic (CA1) neurons of the hippocampal Schaeffer-collateral pathway. We show that long-term potentiation induced by theta-burst stimulation is decreased after presynaptic but not postsynaptic deletion of presenilins. Moreover, we found that presynaptic but not postsynaptic inactivation of presenilins alters short-term plasticity and synaptic facilitation. The probability of evoked glutamate release, measured with the open-channel NMDA (N-methyl-D-aspartate) receptor antagonist MK-801, is reduced by presynaptic inactivation of presenilins. Notably, depletion of endoplasmic reticulum Ca(2+) stores by thapsigargin, or blockade of Ca(2+) release from these stores by ryanodine receptor inhibitors, mimics and occludes the effects of presynaptic presenilin inactivation. Collectively, these results indicate a selective role for presenilins in the activity-dependent regulation of neurotransmitter release and long-term potentiation induction by modulation of intracellular Ca(2+) release in presynaptic terminals, and further suggest that presynaptic dysfunction might be an early pathogenic event leading to dementia and neurodegeneration in Alzheimer's disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2744588/" 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/PMC2744588/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Chen -- Wu, Bei -- Beglopoulos, Vassilios -- Wines-Samuelson, Mary -- Zhang, Dawei -- Dragatsis, Ioannis -- Sudhof, Thomas C -- Shen, Jie -- R01 NS041783/NS/NINDS NIH HHS/ -- R01 NS041783-04/NS/NINDS NIH HHS/ -- R01 NS041783-08/NS/NINDS NIH HHS/ -- R01NS041783/NS/NINDS NIH HHS/ -- England -- Nature. 2009 Jul 30;460(7255):632-6. doi: 10.1038/nature08177.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurologic Diseases, Brigham & Women's Hospital, Program in Neuroscience, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19641596" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Cells, Cultured ; *Gene Expression Regulation ; Glutamic Acid/metabolism ; Hippocampus/cytology/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Neurons/*metabolism ; Neurotransmitter Agents/*metabolism ; Presenilins/*genetics/*metabolism ; Presynaptic Terminals/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 5
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    Neutrophil ageing is regulated by the microbiome (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-09-17
    Description: Blood polymorphonuclear neutrophils provide immune protection against pathogens, but may also promote tissue injury in inflammatory diseases. Although neutrophils are generally considered to be a relatively homogeneous population, evidence for heterogeneity is emerging. Under steady-state conditions, neutrophil heterogeneity may arise from ageing and replenishment by newly released neutrophils from the bone marrow. Aged neutrophils upregulate CXCR4, a receptor allowing their clearance in the bone marrow, with feedback inhibition of neutrophil production via the IL-17/G-CSF axis, and rhythmic modulation of the haematopoietic stem-cell niche. The aged subset also expresses low levels of L-selectin. Previous studies have suggested that in vitro-aged neutrophils exhibit impaired migration and reduced pro-inflammatory properties. Here, using in vivo ageing analyses in mice, we show that neutrophil pro-inflammatory activity correlates positively with their ageing whilst in circulation. Aged neutrophils represent an overly active subset exhibiting enhanced alphaMbeta2 integrin activation and neutrophil extracellular trap formation under inflammatory conditions. Neutrophil ageing is driven by the microbiota via Toll-like receptor and myeloid differentiation factor 88-mediated signalling pathways. Depletion of the microbiota significantly reduces the number of circulating aged neutrophils and dramatically improves the pathogenesis and inflammation-related organ damage in models of sickle-cell disease or endotoxin-induced septic shock. These results identify a role for the microbiota in regulating a disease-promoting neutrophil subset.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712631/" 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/PMC4712631/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Dachuan -- Chen, Grace -- Manwani, Deepa -- Mortha, Arthur -- Xu, Chunliang -- Faith, Jeremiah J -- Burk, Robert D -- Kunisaki, Yuya -- Jang, Jung-Eun -- Scheiermann, Christoph -- Merad, Miriam -- Frenette, Paul S -- R01 CA154947/CA/NCI NIH HHS/ -- R01 CA173861/CA/NCI NIH HHS/ -- R01 CA190400/CA/NCI NIH HHS/ -- R01 DK056638/DK/NIDDK NIH HHS/ -- R01 HL069438/HL/NHLBI NIH HHS/ -- R01 HL116340/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Sep 24;525(7570):528-32. doi: 10.1038/nature15367. Epub 2015 Sep 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, New York 10461, USA. ; Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA. ; Department of Pediatrics, Albert Einstein College of Medicine, Bronx, New York 10461, USA. ; Department of Oncological Sciences, Mount Sinai School of Medicine, New York, New York 10029, USA. ; The Immunology Institute, Mount Sinai School of Medicine, New York, New York 10029, USA. ; The Institute for Genomics and Multiscale Biology, Mount Sinai School of Medicine, New York, New York 10029, USA. ; Department of Medicine, Albert Einstein College of Medicine, Bronx, New York 10461, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26374999" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia, Sickle Cell/blood/microbiology/pathology ; Animals ; Cell Aging/*immunology ; Disease Models, Animal ; Erythrocytes, Abnormal/pathology ; Inflammation/immunology/pathology ; Macrophage-1 Antigen/metabolism ; Male ; Mice ; Microbiota/*immunology ; Myeloid Differentiation Factor 88/metabolism ; Neutrophils/*cytology/*immunology ; Shock, Septic/immunology/microbiology/pathology ; Signal Transduction ; Toll-Like Receptors/immunology
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    TLR11 activation of dendritic cells by a protozoan profilin-like protein (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-04-30
    Description: Mammalian Toll-like receptors (TLRs) play an important role in the innate recognition of pathogens by dendritic cells (DCs). Although TLRs are clearly involved in the detection of bacteria and viruses, relatively little is known about their function in the innate response to eukaryotic microorganisms. Here we identify a profilin-like molecule from the protozoan parasite Toxoplasma gondii that generates a potent interleukin-12 (IL-12) response in murine DCs that is dependent on myeloid differentiation factor 88. T. gondii profilin activates DCs through TLR11 and is the first chemically defined ligand for this TLR. Moreover, TLR11 is required in vivo for parasite-induced IL-12 production and optimal resistance to infection, thereby establishing a role for the receptor in host recognition of protozoan pathogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yarovinsky, Felix -- Zhang, Dekai -- Andersen, John F -- Bannenberg, Gerard L -- Serhan, Charles N -- Hayden, Matthew S -- Hieny, Sara -- Sutterwala, Fayyaz S -- Flavell, Richard A -- Ghosh, Sankar -- Sher, Alan -- 1R01AI045806-01A1/AI/NIAID NIH HHS/ -- AI05093/AI/NIAID NIH HHS/ -- R01-AI59440/AI/NIAID NIH HHS/ -- R01-GM38765/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jun 10;308(5728):1626-9. Epub 2005 Apr 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology Section, Laboratory of Parasitic Diseases; National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA. fyarovinsky@niaid.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15860593" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Antigens, Differentiation/genetics/metabolism ; Contractile Proteins/chemistry/*immunology/isolation & purification/metabolism ; Dendritic Cells/*immunology ; Genes, Protozoan ; Immunity, Innate ; Interleukin-12/biosynthesis/blood ; Ligands ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Inbred C57BL ; Microfilament Proteins/chemistry/*immunology/isolation & purification/metabolism ; Molecular Sequence Data ; Myeloid Differentiation Factor 88 ; NF-kappa B/metabolism ; Profilins ; Protozoan Proteins/chemistry/*immunology/isolation & purification/metabolism ; Receptors, Cell Surface/*metabolism ; Receptors, Immunologic/genetics/metabolism ; Recombinant Proteins/immunology ; Signal Transduction ; Toll-Like Receptors ; Toxoplasma/genetics/*immunology ; Toxoplasmosis, Animal/*immunology ; Transfection
    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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    A toll-like receptor that prevents infection by uropathogenic bacteria (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-06
    Description: Toll-like receptors (TLRs) recognize molecular patterns displayed by microorganisms, and their subsequent activation leads to the transcription of appropriate host-defense genes. Here we report the cloning and characterization of a member of the mammalian TLR family, TLR11, that displays a distinct pattern of expression in macrophages and liver, kidney, and bladder epithelial cells. Cells expressing TLR11 fail to respond to known TLR ligands but instead respond specifically to uropathogenic bacteria. Mice lacking TLR11 are highly susceptible to infection of the kidneys by uropathogenic bacteria, indicating a potentially important role for TLR11 in preventing infection of internal organs of the urogenital system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Dekai -- Zhang, Guolong -- Hayden, Matthew S -- Greenblatt, Matthew B -- Bussey, Crystal -- Flavell, Richard A -- Ghosh, Sankar -- GM07205/GM/NIGMS NIH HHS/ -- R01-AI59440/AI/NIAID NIH HHS/ -- R37-AI33443/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2004 Mar 5;303(5663):1522-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001781" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cloning, Molecular ; Codon, Terminator ; Colony Count, Microbial ; Disease Susceptibility ; Epithelial Cells/metabolism ; Escherichia coli/growth & development/immunology/*pathogenicity ; Escherichia coli Infections/*immunology/microbiology ; Gene Expression Profiling ; Humans ; Immunity, Innate ; Kidney/immunology/*metabolism/microbiology ; Ligands ; Liver/metabolism ; Macrophages/metabolism ; Mice ; Mice, Knockout ; Molecular Sequence Data ; NF-kappa B/metabolism ; Polymorphism, Genetic ; Receptors, Cell Surface/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Toll-Like Receptors ; Transfection ; Tumor Necrosis Factor-alpha/metabolism ; Urinary Bladder/immunology/*metabolism/microbiology ; Urinary Tract Infections/*immunology/microbiology
    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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    Arteriolar niches maintain haematopoietic stem cell quiescence (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-10-11
    Description: Cell cycle quiescence is a critical feature contributing to haematopoietic stem cell (HSC) maintenance. Although various candidate stromal cells have been identified as potential HSC niches, the spatial localization of quiescent HSCs in the bone marrow remains unclear. Here, using a novel approach that combines whole-mount confocal immunofluorescence imaging techniques and computational modelling to analyse significant three-dimensional associations in the mouse bone marrow among vascular structures, stromal cells and HSCs, we show that quiescent HSCs associate specifically with small arterioles that are preferentially found in endosteal bone marrow. These arterioles are ensheathed exclusively by rare NG2 (also known as CSPG4)(+) pericytes, distinct from sinusoid-associated leptin receptor (LEPR)(+) cells. Pharmacological or genetic activation of the HSC cell cycle alters the distribution of HSCs from NG2(+) periarteriolar niches to LEPR(+) perisinusoidal niches. Conditional depletion of NG2(+) cells induces HSC cycling and reduces functional long-term repopulating HSCs in the bone marrow. These results thus indicate that arteriolar niches are indispensable for maintaining HSC quiescence.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3821873/" 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/PMC3821873/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kunisaki, Yuya -- Bruns, Ingmar -- Scheiermann, Christoph -- Ahmed, Jalal -- Pinho, Sandra -- Zhang, Dachuan -- Mizoguchi, Toshihide -- Wei, Qiaozhi -- Lucas, Daniel -- Ito, Keisuke -- Mar, Jessica C -- Bergman, Aviv -- Frenette, Paul S -- HL069438/HL/NHLBI NIH HHS/ -- HL097700/HL/NHLBI NIH HHS/ -- R00 CA139009/CA/NCI NIH HHS/ -- R01 DK056638/DK/NIDDK NIH HHS/ -- R01 DK098263/DK/NIDDK NIH HHS/ -- R01 DK100689/DK/NIDDK NIH HHS/ -- R01 HL069438/HL/NHLBI NIH HHS/ -- R01 HL097700/HL/NHLBI NIH HHS/ -- R01 HL116340/HL/NHLBI NIH HHS/ -- T32 063754/PHS HHS/ -- England -- Nature. 2013 Oct 31;502(7473):637-43. doi: 10.1038/nature12612. Epub 2013 Oct 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, New York 10461, USA [2] Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24107994" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/*cytology ; Bone Marrow/blood supply ; Cell Division ; Cell Separation ; Female ; Flow Cytometry ; Hematopoietic Stem Cells/*cytology/metabolism ; Male ; Mesenchymal Stromal Cells/cytology ; Mice ; Mice, Inbred C57BL ; Nestin/metabolism ; *Stem Cell Niche
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
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    Controlled-release mitochondrial protonophore reverses diabetes and steatohepatitis in rats (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-02-28
    Description: Nonalcoholic fatty liver disease (NAFLD) is a major factor in the pathogenesis of type 2 diabetes (T2D) and nonalcoholic steatohepatitis (NASH). The mitochondrial protonophore 2,4 dinitrophenol (DNP) has beneficial effects on NAFLD, insulin resistance, and obesity in preclinical models but is too toxic for clinical use. We developed a controlled-release oral formulation of DNP, called CRMP (controlled-release mitochondrial protonophore), that produces mild hepatic mitochondrial uncoupling. In rat models, CRMP reduced hypertriglyceridemia, insulin resistance, hepatic steatosis, and diabetes. It also normalized plasma transaminase concentrations, ameliorated liver fibrosis, and improved hepatic protein synthetic function in a methionine/choline-deficient rat model of NASH. Chronic treatment with CRMP was not associated with any systemic toxicity. These data offer proof of concept that mild hepatic mitochondrial uncoupling may be a safe and effective therapy for the related epidemics of metabolic syndrome, T2D, and NASH.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495920/" 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/PMC4495920/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perry, Rachel J -- Zhang, Dongyan -- Zhang, Xian-Man -- Boyer, James L -- Shulman, Gerald I -- P30 DK-34989/DK/NIDDK NIH HHS/ -- P30 DK-45735/DK/NIDDK NIH HHS/ -- P30 DK034989/DK/NIDDK NIH HHS/ -- P30 DK045735/DK/NIDDK NIH HHS/ -- R01 DK-40936/DK/NIDDK NIH HHS/ -- R01 DK040936/DK/NIDDK NIH HHS/ -- R24 DK-085638/DK/NIDDK NIH HHS/ -- T32 DK-101019/DK/NIDDK NIH HHS/ -- U24 DK-059635/DK/NIDDK NIH HHS/ -- UL1 TR-000142/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Mar 13;347(6227):1253-6. doi: 10.1126/science.aaa0672. Epub 2015 Feb 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA. Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA. Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA. ; Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA. ; Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA. ; Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA. Yale Liver Center, Yale University School of Medicine, New Haven, CT, USA. ; Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA. Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA. Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA. gerald.shulman@yale.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25721504" target="_blank"〉PubMed〈/a〉
    Keywords: 2,4-Dinitrophenol/*administration & dosage/toxicity ; Animals ; Blood Glucose/metabolism ; Delayed-Action Preparations/*administration & dosage ; Diabetes Mellitus, Type 2/*drug therapy/metabolism ; Glucose Tolerance Test ; Insulin Resistance ; Lipid Metabolism ; Liver Cirrhosis/drug therapy ; Male ; Mice ; Mitochondria, Liver/drug effects/metabolism ; Muscle, Skeletal/metabolism ; Non-alcoholic Fatty Liver Disease/*drug therapy/metabolism ; Oxidation-Reduction ; Proton Ionophores/*administration & dosage/toxicity ; Random Allocation ; Rats ; Rats, Zucker
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 10
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    Evolution of magnetic properties in the vicinity of the Verwey transition in ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}$ thin films (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-09-06
    Description: Author(s): X. H. Liu, W. Liu, and Z. D. Zhang We have systematically studied the evolution of magnetic properties, especially the coercivity and the remanence ratio in the vicinity of the Verwey transition temperature ( T V ) , of high-quality epitaxial Fe 3 O 4 thin films grown on MgO (001), MgAl 2 O 4 (MAO) (001), and SrTiO 3 (STO) (001) substrates. We ... [Phys. Rev. B 96, 094405] Published Tue Sep 05, 2017
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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