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  • 1
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    Complete development of mosquito phases of the malaria parasite in vitro (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: Methods for reproducible in vitro development of the mosquito stages of malaria parasites to produce infective sporozoites have been elusive for over 40 years. We have cultured gametocytes of Plasmodium berghei through to infectious sporozoites with efficiencies similar to those recorded in vivo and without the need for salivary gland invasion. Oocysts developed extracellularly in a system whose essential elements include co-cultured Drosophila S2 cells, basement membrane matrix, and insect tissue culture medium. Sporozoite production required the presence of para-aminobenzoic acid. The entire life cycle of P. berghei, a useful model malaria parasite, can now be achieved in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Al-Olayan, Ebtesam M -- Beetsma, Annette L -- Butcher, Geoff A -- Sinden, Robert E -- Hurd, Hilary -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):677-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Applied Entomology and Parasitology, School of Life Sciences, Keele University, Staffordshire ST5 5BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809973" target="_blank"〉PubMed〈/a〉
    Keywords: 4-Aminobenzoic Acid/pharmacology ; Aedes ; Aerobiosis ; Animals ; Anopheles/parasitology ; Cell Line ; Coculture Techniques ; Collagen ; Culture Media ; Drosophila ; Drug Combinations ; Hydrogen-Ion Concentration ; Laminin ; Life Cycle Stages ; Malaria/parasitology ; Male ; Mice ; Plasmodium berghei/cytology/drug effects/*growth & development ; Proteoglycans
    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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    Neutrophil Mac-1 and MEL-14 adhesion proteins inversely regulated by chemotactic factors (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-09-15
    Description: The neutrophil Mac-1 and gp100MEL-14 adhesion proteins are involved in neutrophil extravasation during inflammation. Both the expression and activity of Mac-1 are greatly increased after neutrophil activation. In contrast, neutrophils shed gp100MEL-14 from the cell surface within 4 minutes after activation with chemotactic factors or phorbol esters, releasing a 96-kilodalton fragment of the antigen into the supernatant. Immunohistology showed that gp100MEL-14 was downregulated on neutrophils that had extravasated into inflamed tissue. The gp100MEL-14 adhesion protein may participate in the binding of unactivated neutrophils to the endothelium; rapid shedding of gp100MEL-14 may prevent extravasation into and damage of normal tissues by activated neutrophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kishimoto, T K -- Jutila, M A -- Berg, E L -- Butcher, E C -- AI 19957/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Sep 15;245(4923):1238-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2551036" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Differentiation/*immunology ; Antigens, Surface/*immunology ; Bone Marrow Cells ; Cell Adhesion ; Cell Adhesion Molecules ; Chemotactic Factors/*physiology ; Complement C5/physiology ; Complement C5a ; Fluorescent Antibody Technique ; Interleukin-1/physiology ; Interleukin-8 ; Kinetics ; Leukotriene B4/physiology ; Lipopolysaccharides/physiology ; Lymphocyte Activation ; Macrophage Activation ; Macrophage-1 Antigen ; Mice ; Mice, Inbred BALB C ; Neutrophils/cytology/*immunology ; Tetradecanoylphorbol Acetate ; Tumor Necrosis Factor-alpha/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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  • 3
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    Benzothiazinones kill Mycobacterium tuberculosis by blocking arabinan synthesis (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-03-21
    Description: New drugs are required to counter the tuberculosis (TB) pandemic. Here, we describe the synthesis and characterization of 1,3-benzothiazin-4-ones (BTZs), a new class of antimycobacterial agents that kill Mycobacterium tuberculosis in vitro, ex vivo, and in mouse models of TB. Using genetics and biochemistry, we identified the enzyme decaprenylphosphoryl-beta-d-ribose 2'-epimerase as a major BTZ target. Inhibition of this enzymatic activity abolishes the formation of decaprenylphosphoryl arabinose, a key precursor that is required for the synthesis of the cell-wall arabinans, thus provoking cell lysis and bacterial death. The most advanced compound, BTZ043, is a candidate for inclusion in combination therapies for both drug-sensitive and extensively drug-resistant TB.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3128490/" 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/PMC3128490/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Makarov, Vadim -- Manina, Giulia -- Mikusova, Katarina -- Mollmann, Ute -- Ryabova, Olga -- Saint-Joanis, Brigitte -- Dhar, Neeraj -- Pasca, Maria Rosalia -- Buroni, Silvia -- Lucarelli, Anna Paola -- Milano, Anna -- De Rossi, Edda -- Belanova, Martina -- Bobovska, Adela -- Dianiskova, Petronela -- Kordulakova, Jana -- Sala, Claudia -- Fullam, Elizabeth -- Schneider, Patricia -- McKinney, John D -- Brodin, Priscille -- Christophe, Thierry -- Waddell, Simon -- Butcher, Philip -- Albrethsen, Jakob -- Rosenkrands, Ida -- Brosch, Roland -- Nandi, Vrinda -- Bharath, Sowmya -- Gaonkar, Sheshagiri -- Shandil, Radha K -- Balasubramanian, Venkataraman -- Balganesh, Tanjore -- Tyagi, Sandeep -- Grosset, Jacques -- Riccardi, Giovanna -- Cole, Stewart T -- 062511/Wellcome Trust/United Kingdom -- 080039/Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2009 May 8;324(5928):801-4. doi: 10.1126/science.1171583. Epub 2009 Mar 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉A. N. Bakh Institute of Biochemistry, Russian Academy of Science, 119071 Moscow, Russia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19299584" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antitubercular Agents/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Arabinose/metabolism ; Cell Wall/metabolism ; Drug Resistance, Bacterial ; Enzyme Inhibitors/cerebrospinal fluid/chemistry/pharmacology/therapeutic use ; Ethambutol/pharmacology ; Gene Expression Regulation, Bacterial/drug effects ; Genes, Bacterial ; Mice ; Mice, Inbred BALB C ; Microbial Sensitivity Tests ; Molecular Sequence Data ; Molecular Structure ; Mycobacterium/drug effects/genetics ; Mycobacterium tuberculosis/*drug effects/genetics/metabolism ; Polysaccharides/*biosynthesis ; Racemases and Epimerases/*antagonists & inhibitors/metabolism ; Spiro Compounds/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Thiazines/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Tuberculosis/*drug therapy/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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  • 4
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    Role of Rho in chemoattractant-activated leukocyte adhesion through integrins (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-02-16
    Description: Heterotrimeric guanine nucleotide binding protein (G protein)-linked receptors of the chemoattractant subfamily can trigger adhesion through leukocyte integrins, and in this role they are thought to regulate immune cell-cell interactions and trafficking. In lymphoid cells transfected with formyl peptide or interleukin-8 receptors, agonist stimulation activated nucleotide exchange on the small guanosine triphosphate-binding protein RhoA in seconds. Inactivation of Rho by C3 transferase exoenzyme blocked agonist-induced lymphocyte alpha4beta1 adhesion to vascular cell adhesion molecule-1 and neutrophil beta2 integrin adhesion to fibrinogen. These findings suggest that Rho participates in signaling from chemoattractant receptors to trigger rapid adhesion in leukocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laudanna, C -- Campbell, J J -- Butcher, E C -- 1F32 AI08930/AI/NIAID NIH HHS/ -- 5T32 CA09302/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 16;271(5251):981-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8584934" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/genetics ; B-Lymphocytes/*physiology ; *Cell Adhesion ; Cells, Cultured ; Chemotactic Factors/*pharmacology ; GTP-Binding Proteins/metabolism/*physiology ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Guanosine Diphosphate/metabolism ; Integrin alpha4beta1 ; Integrins/*physiology ; Interleukin-8/pharmacology ; Mice ; Molecular Sequence Data ; N-Formylmethionine Leucyl-Phenylalanine/pharmacology ; Receptors, Formyl Peptide ; Receptors, Immunologic/genetics ; Receptors, Interleukin/genetics ; Receptors, Interleukin-8A ; Receptors, Lymphocyte Homing/*physiology ; Receptors, Peptide/genetics ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection ; Vascular Cell Adhesion Molecule-1/*physiology ; rhoA GTP-Binding Protein
    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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  • 5
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    A distinct endothelial cell recognition system that controls lymphocyte traffic into inflamed synovium (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-08-01
    Description: Lymphocytes are essential mediators of normal tissue inflammatory reactions and of pathologic tissue damage in, for example, rheumatoid arthritis and other autoimmune diseases. In a study of the mechanisms controlling lymphocyte entry into sites of inflammation from the blood, the function and specificity of lymphocyte-endothelial interactions were examined in inflamed joint tissue (synovium) from patients with rheumatoid arthritis. Synovial high endothelial venules (HEV) supported the binding of normal peripheral blood lymphocytes in vitro. The characteristics of this binding, which were similar to those of lymphocyte-HEV interactions controlling lymphocyte migration into organized lymphoid tissues, included a requirement for calcium ions, a dependence on metabolic activity, and a preferential adherence of circulating lymphocytes as opposed to immature thymocytes. However, the binding of lymphocytes to synovial HEV was not inhibited by a monoclonal antibody to lymphocyte receptors for lymph node HEV, and synovial HEV failed to bind either lymph node HEV-specific or mucosal HEV-specific B lymphoblastoid cells. The results suggest that a lymphocyte-endothelial cell recognition system that is distinct from such systems in organized lymphoid tissues directs the extravasation of normal lymphocytes as well as pathologically important effector cells into inflamed synovium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jalkanen, S -- Steere, A C -- Fox, R I -- Butcher, E C -- AI19957/AI/NIAID NIH HHS/ -- AM-20358/AM/NIADDK NIH HHS/ -- RR-00125/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1986 Aug 1;233(4763):556-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726548" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis, Rheumatoid/immunology ; Endothelium/immunology ; Humans ; Immunity, Cellular ; Lymph Nodes/cytology ; Lymphocytes/immunology/*physiology ; Mice ; Synovial Membrane/immunology ; Synovitis/*immunology
    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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