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  • Articles  (2)
  • American Association for the Advancement of Science (AAAS)  (2)
  • 1
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    Impaired B and T cell antigen receptor signaling in p110delta PI 3-kinase mutant mice (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: Class IA phosphoinositide 3-kinases (PI3Ks) are a family of p85/p110 heterodimeric lipid kinases that generate second messenger signals downstream of tyrosine kinases, thereby controlling cell metabolism, growth, proliferation, differentiation, motility, and survival. Mammals express three class IA catalytic subunits: p110alpha, p110beta, and p110delta. It is unclear to what extent these p110 isoforms have overlapping or distinct biological roles. Mice expressing a catalytically inactive form of p110delta (p110delta(D910A)) were generated by gene targeting. Antigen receptor signaling in B and T cells was impaired and immune responses in vivo were attenuated in p110delta mutant mice. They also developed inflammatory bowel disease. These results reveal a selective role for p110delta in immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okkenhaug, Klaus -- Bilancio, Antonio -- Farjot, Geraldine -- Priddle, Helen -- Sancho, Sara -- Peskett, Emma -- Pearce, Wayne -- Meek, Stephen E -- Salpekar, Ashreena -- Waterfield, Michael D -- Smith, Andrew J H -- Vanhaesebroeck, Bart -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):1031-4. Epub 2002 Jul 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, 91 Riding House Street, London W1W 7BS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130661" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; B-Lymphocytes/enzymology/*immunology ; Bone Marrow Cells/cytology ; Catalytic Domain ; Cell Differentiation ; Cell Division ; Female ; Gene Targeting ; Hematopoietic Stem Cells/cytology ; Immunoglobulins/blood ; Inflammatory Bowel Diseases/immunology/pathology ; Interleukin-2/biosynthesis ; Intestinal Mucosa/pathology ; Lymph Nodes/cytology/pathology ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred C57BL ; Phosphatidylinositol 3-Kinases/genetics/*metabolism ; Point Mutation ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Receptors, Antigen, B-Cell/*metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Signal Transduction ; Spleen/cytology/pathology ; T-Lymphocytes/enzymology/*immunology ; Thymus Gland/cytology
    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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    Anxiety and muscle tension as consequences of caffeine withdrawal (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-26
    Description: Regular consumers of caffeine had higher muscle tension after three or more hours of abstinence than low caffeine consumers. This difference was absent after double-blind administration of caffeine citrate or placebo. In a discriminative reaction time test, caffeine treatment improved performance. Among subjects receiving placebo, anxiety was highly correlated with prior caffeine use, suggesting that even a brief abstinence may produce anxiety in the regular user.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉White, B C -- Lincoln, C A -- Pearce, N W -- Reeb, R -- Vaida, C -- AA 03513/AA/NIAAA NIH HHS/ -- HD 05958/HD/NICHD NIH HHS/ -- NS 11618/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1980 Sep 26;209(4464):1547-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7433978" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Anxiety/*etiology ; Caffeine/*pharmacology ; Humans ; Muscle Contraction/*drug effects ; Substance Withdrawal Syndrome/complications/*physiopathology
    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)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
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