Search Results - (Author, Cooperation:L. Hammarstrom)

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  1. 1
    Staff View
    Publication Date:
    2013-04-13
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    DNA Mutational Analysis ; Genetic Loci ; *Haploinsufficiency ; Heterotaxy Syndrome/*genetics ; Humans ; Mutation ; Pedigree ; Penetrance ; Receptors, Laminin/*genetics ; Ribosomal Proteins/*genetics ; Spleen/*abnormalities/growth & development
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    L. Hammarstrom ; J. R. Winkler ; H. B. Gray ; S. Styring
    American Association for the Advancement of Science (AAAS)
    Published 2011
    Staff View
    Publication Date:
    2011-07-19
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Photosynthesis ; *Solar Energy ; Synthetic Biology
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    PRIMI, D. ; HAMMARSTROM, L. ; MÖLLER, G. ; SMITH, C. I. E. ; UHR, JAQUELINE

    Oxford, UK : Blackwell Publishing Ltd
    Published 1979
    Staff View
    ISSN:
    1365-3083
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Concanavalin A induced polyclonal antibody synthesis in normal spleen cells in vitro. Optimal responses were obtained by Con A concentrations lower than those optimal for induction of DNA synthesis. T cells, but not macrophages, were necessary for the effect. Spleen cells from nude mice were not activated, whereas cells from the LPS non-responder stain C3H/HeJ were activated to polyclonal antibody synthesis by Con A. Supernatants from Con A activated spleen cells could by themselves induce polyclonal antibody synthesis in untreated spleen cell cultures, even when Con A had been removed by absorption with Sephadex G-50 and when alpha-methyl-mannoside was present in the secondary cultures. T cells produced the active Supernatants, which were competent to induce polyclonal antibody synthesis, but not DNA synthesis, in both H-2-incompatible and compatible strains. When the Supernatants were absorbed with erythrocyte antigens, they specifically induced an enhanced response, in secondary cultures, to the antigen used for absorption. Possible mechanisms of this specific effect are discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3083.1979.tb03069.x

    Articles: DFG German National Licenses
  4. 4
    Pierce, A.M. ; Lindskog, S. ; Hammarstrom, L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0892-0354
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Electrical Engineering, Measurement and Control Technology
    Natural Sciences in General
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0892-0354(91)90015-5

    Articles: DFG German National Licenses
  5. 5
    Hammarstrom, L. ; Appelgren, L.-E. ; Ullberg, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0014-4827
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0014-4827(65)90210-7

    Articles: DFG German National Licenses
  6. 6
    Hammarstrom, L. ; Smith, C.I.E.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0014-4827
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0014-4827(79)90362-8

    Articles: DFG German National Licenses
  7. 7
    Hammarstrom, L. ; Smith, C.I.E.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0014-4827
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0014-4827(82)90025-8

    Articles: DFG German National Licenses
  8. 8
    Staff View
    ISSN:
    0022-5320
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/S0022-5320(64)80010-1

    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    0022-5193
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/S0022-5193(05)80146-8

    Articles: DFG German National Licenses
  10. 10
    Staff View
    ISSN:
    0888-7543
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1006/geno.1994.1310

    Articles: DFG German National Licenses
  11. 11
    Andersson, G. ; Ek-Rylander, B. ; Hammarstrom, L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0003-9861
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0003-9861(84)90007-9

    Articles: DFG German National Licenses
  12. 12
    Pierce, A.M. ; Lindskog, S. ; Hammarstrom, L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0892-0354
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Electrical Engineering, Measurement and Control Technology
    Natural Sciences in General
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0892-0354(91)90015-5

    Articles: DFG German National Licenses
  13. 13
    HAMMARSTROM, L. ; PERSSON, M. A. A. ; SMITH, C. I. E.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1983
    Staff View
    ISSN:
    1365-3083
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Anti-IgA antibodies were found in 14 of 33 (42%) IgA-deficient donors. In healthy IgA-deficient blood donors anti-IgA appeared associated with the presence of HLA DR3. The antibodies were mainly of the IgG1 and, in high-titred sera, IgG4 subclasses. Sera containing high-titred anti-IgA selectively impaired IgA synthesis in vitro as induced by direct and indirect polyclonal B-cell activators. These antibodies may play a role in the pathogenesis and/or the maintenance of IgA deficiency.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3083.1983.tb00885.x

    Articles: DFG German National Licenses
  14. 14
    Hammarstrom, L.-G. ; Berg, U. ; Liljefors, T.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/S0040-4039(00)96651-6

    Articles: DFG German National Licenses
  15. 15
    Staff View
    ISSN:
    0165-4608
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0165-4608(86)90201-3

    Articles: DFG German National Licenses
  16. 16
    Hammarstrom, L. E. ; Toverud, S. U. ; Hanker, J. S.
    Springer
    Published 1971
    Staff View
    ISSN:
    1432-0827
    Keywords:
    Tech ; Development ; Enamel ; Enzyme ; Histochemistry
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Medicine
    Physics
    Description / Table of Contents:
    Résumé L'activité en naphtylamidase est étudiéc au niveau des incisives et molaires de rat, à divers stades de développement. Du L-leucyl-4-methoxy-2-naphtylamide, du L-alanyl-4-methoxy-2-naphtylamide, du L-leucyl-2-naphthylamide et du DL-alanyl-2-naphtylamide sont utilisés comme substrats: du bleu rapide B et du grenat rapide GBC sont employés comme sels de diazonium. Le naphtylamidase n'est pas visible au niveau de dents, en voie de dévelopment, au cours de la formation matricielle de l'émail. A la fin de ce stade, le naphtylamidase est présent au niveau de l'extrémité distale des améloblastes, près de la surface de l'émail. L'activité enzymatique reste identique jusqu'au moment de la fusion de l'épithélium dentaire et de l'épithélium buccal, au moment de l'éruption de la dent dans la cavité buccale. On ne rencontre pas de naphtylamidase au niveau d'autres tissues dentaires; cependant une activité marquée est observée dans les ostéoclastes au niveau des surfaces de résorption de l'os alvéolaire, entourant les dents, en voie de développement et d'éruption, et dans certaines régions du tissu conjonctif.
    Abstract:
    Zusammenfassung Die Aktivität der Naphthylamidase wurde in den Backen- und Schneidezähnen von Ratten in verschiedenen Entwicklungsstufen studiert. Als Substrate wurden L-leucyl-4-methoxy-2-naphthylamid, L-alanyl-4-methoxy-2-naphthylamid, L-leucyl-2-naphthylamid und DL-alanyl-2-naphthylamid verwendet; als Diazoniumsalze dienten Echtblau B und Echt-Granat GBC. Naphthylamidase konnte während der Schmelzmatrixbildung im Zahn nicht nachgewiesen werden. Nach Abschluß dieser Phase erschien Naphthylamidase in den distalen Enden der Ameloblasten, nahe bei der Schmelzoberfläche. Die Enzymtätigkeit blieb am selben Ort lokalisiert, bis das Zahnepithel, im Augenblick wo der Zahn in die Mundhöhle durchstößt, in das Mundepithel überging. Naphthylamidase wurde in anderen Zahngeweben nicht gefunden, aber eine deutliche Aktivität konnte in gewissen Bezirken des Bindegewebes sowie in den Osteoklasten der resorbierenden Oberflächen vom alveolären Knochen festgestellt werden, welcher die sich bildenden und die hervorstoßenden Zähne umgibt.
    Notes:
    Abstract Naphthylamidase activity was studied in rat molar and incisor teeth at different stages of development. L-leucyl-4-methoxy-2-naphthylamide, L-alanyl-4-methoxy-2-naphthylamide, L-leucyl-2-naphthylamide and DL-alanyl-2-naphthylamide were used as substrates and Fast blue B and Fast Garnet GBC as diazonium salts. Naphthylamidase was not demonstrable in the teeth during enamel matrix formation. After the termination of this stage, naphthylamidase was present in the ameloblasts in their distal ends close to the enamel surface. The enzyme activity retained this localization until the dental epithelium fused with the oral epithelium at the time of tooth eruption into the oral cavity. Naphthylamidase was not found in other dental tissues, but marked activity was found in osteoclasts at the resorbing surfaces of alveolar bone surrounding the developing and erupting teeth and in certain areas of the connective tissue.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF02062616

    Articles: DFG German National Licenses