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   <subfield code="a">A Transmissible Cytotoxic Activity Isolated from a Patient with Brain Ischemia Causes Microglial Cell Activation and Dysfunction</subfield>
   <subfield code="h">[Elektronische Daten]</subfield>
   <subfield code="c">[F. Beretti, V. Cenacchi, M. Portolani, A. Ardizzoni, E. Blasi, C. Cermelli]</subfield>
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   <subfield code="a">Summary: 1. Microglial cell activation occurs during brain injury, ischemia, and in several neurologic disorders. Recently, we isolated a transmissible cytotoxic activity (TCA) from the cerebrospinal fluid of a patient with brain ischemia. Such a TCA, associated with one or more protein(s) that supposedly had undergone in vivo misfolding, causes apoptosis in vitro in different cell lines, including microglial cells. The TCA producing cells and the potential in vivo role of such cytotoxic activity remains to be elucidated. Here, we investigated the in vitro effects of TCA on microglial cell immune functions. 2. The murine microglial cell line RR4 was exposed to TCA, and then its response was evaluated as: (a) phagocytosis and antifungal activity against Candida albicans; (b) secretory pattern; and (c) levels of p38 phosphorylation. 3. Unlike mock-treated controls, microglial cells exposed to TCA showed an increase in phagocytic activity. Unexpectedly, their capability to kill the ingested fungi significantly diminished. Moreover, TCA-treated cells produced amounts of macrophage inflammatory protein 1-α, tumor necrosis factor-α, and nitric oxide significantly higher than mock-treated cells. Finally, phosphorylation of p38 mitogen-activated protein kinase (MAPK) was detected in TCA-treated but not in mock-treated controls as early as 30min after treatment. 4. Overall, these results indicate that TCA causes a rapid molecular response in microglial cells, by the time, leading to an intriguing effector and secretory dysfunction.</subfield>
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   <subfield code="a">Springer Science+Business Media, LLC, 2007</subfield>
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   <subfield code="a">transmissible cytotoxic activity (TCA)</subfield>
   <subfield code="2">nationallicence</subfield>
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   <subfield code="a">glial cells</subfield>
   <subfield code="2">nationallicence</subfield>
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   <subfield code="a">phagocytosis</subfield>
   <subfield code="2">nationallicence</subfield>
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   <subfield code="a">antifungal acitvity</subfield>
   <subfield code="2">nationallicence</subfield>
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  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">Candida albicans</subfield>
   <subfield code="2">nationallicence</subfield>
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   <subfield code="a">Beretti</subfield>
   <subfield code="D">F.</subfield>
   <subfield code="u">Dipartimento Integrato dei Servizi Diagnostici, di Laboratorio e di Medicina Legale, Università degli Studi di Modena e Reggio Emilia, Via del Pozzo 87, 41100 Modena, Italy</subfield>
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   <subfield code="a">Cenacchi</subfield>
   <subfield code="D">V.</subfield>
   <subfield code="u">Dipartimento di Scienze di Sanità Pubblica, Università degli Studi di Modena e Reggio Emilia, Via Campi 287 41100, Modena, Italy</subfield>
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   <subfield code="a">Portolani</subfield>
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   <subfield code="u">Dipartimento Integrato dei Servizi Diagnostici, di Laboratorio e di Medicina Legale, Università degli Studi di Modena e Reggio Emilia, Via del Pozzo 87, 41100 Modena, Italy</subfield>
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   <subfield code="a">Ardizzoni</subfield>
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   <subfield code="u">Dipartimento di Scienze di Sanità Pubblica, Università degli Studi di Modena e Reggio Emilia, Via Campi 287 41100, Modena, Italy</subfield>
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   <subfield code="a">Blasi</subfield>
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   <subfield code="u">Dipartimento di Scienze di Sanità Pubblica, Università degli Studi di Modena e Reggio Emilia, Via Campi 287 41100, Modena, Italy</subfield>
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   <subfield code="a">Cermelli</subfield>
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   <subfield code="u">Dipartimento di Scienze di Sanità Pubblica, Università degli Studi di Modena e Reggio Emilia, Via Campi 287 41100, Modena, Italy</subfield>
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   <subfield code="t">Cellular and Molecular Neurobiology</subfield>
   <subfield code="d">Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com</subfield>
   <subfield code="g">27/4(2007-06-01), 517-528</subfield>
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