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Abstract:

In mice with experimental autoimmune encephalomyelitis (EAE) pretreatment with progesterone improves clinical signs and decreases the loss of myelin basic protein (MBP) and proteolipid protein (PLP) measured by immunohistochemistry and in situ hybridization. Presently, we analyzed if progesterone effects in the spinal cord of EAE mice involved the decreased transcription of local inflammatory mediators and the increased transcription of myelin proteins and myelin transcription factors. C57Bl/6 female mice were divided into controls, EAE and EAE receiving progesterone (100. mg implant) 7. days before EAE induction. Tissues were collected on day 17 post-immunization. Real time PCR technology demonstrated that progesterone blocked the EAE-induced increase of the proinflammatory mediators tumor necrosis factor alpha (TNFα) and its receptor TNFR1, the microglial marker CD11b and toll-like receptor 4 (TLR4) mRNAs, and increased mRNA expression of PLP and MBP, the myelin transcription factors NKx2.2 and Olig1 and enhanced CC1. +. oligodendrocyte density respect of untreated EAE mice. Immunocytochemistry demonstrated decreased Iba1. +. microglial cells. Confocal microscopy demonstrated that TNFα colocalized with glial-fibrillary acidic protein. +. astrocytes and OX-42. +. microglial cells. Therefore, progesterone treatment improved the clinical signs of EAE, decreased inflammatory glial reactivity and increased myelination. Data suggest that progesterone neuroprotection involves the modulation of transcriptional events in the spinal cord of EAE mice. © 2012 IBRO.

Registro:

Documento: Artículo
Título:Progesterone down-regulates spinal cord inflammatory mediators and increases myelination in experimental autoimmune encephalomyelitis
Autor:Garay, L.I.; González Deniselle, M.C.; Brocca, M.E.; Lima, A.; Roig, P.; De Nicola, A.F.
Filiación:Laboratory of Neuroendocrine Biochemistry, Instituto de Biologia y Medicina Experimental-CONICET, Obligado 2490, 1428 Buenos Aires, Argentina
Department of Human Biochemistry, Faculty of Medicine, University of Buenos Aires, Paraguay 2155, 1425 Buenos Aires, Argentina
Palabras clave:Experimental autoimmune encephalomyelitis; Myelin proteins; Neuroprotection; Progesterone; Proinflammatory mediators; Transcription factors; autacoid; CD11b antigen; glial fibrillary acidic protein; messenger RNA; myelin basic protein; progesterone; protein Olig1; proteolipid protein; toll like receptor 4; transcription factor; transcription factor Nkx2.2; tumor necrosis factor alpha; tumor necrosis factor receptor 1; unclassified drug; allergic encephalomyelitis; animal cell; animal experiment; animal model; animal tissue; article; astrocyte; confocal microscopy; controlled study; down regulation; drug mechanism; female; immunocytochemistry; immunohistochemistry; in situ hybridization; microglia; mouse; myelination; nonhuman; nucleotide sequence; oligodendroglia; pharmacological blocking; priority journal; protein localization; real time polymerase chain reaction; spinal cord; Animals; Calcium-Binding Proteins; Down-Regulation; Encephalomyelitis, Autoimmune, Experimental; Female; Immunohistochemistry; Inflammation Mediators; Mice; Mice, Inbred C57BL; Microfilament Proteins; Microglia; Microscopy, Confocal; Myelin Proteins; Myelin Sheath; Oligodendroglia; Progesterone; Real-Time Polymerase Chain Reaction; RNA, Messenger; Spinal Cord; Transcription Factors
Año:2012
Volumen:226
Página de inicio:40
Página de fin:50
DOI: http://dx.doi.org/10.1016/j.neuroscience.2012.09.032
Título revista:Neuroscience
Título revista abreviado:Neuroscience
ISSN:03064522
CODEN:NRSCD
CAS:progesterone, 57-83-0; toll like receptor 4, 203811-83-0; Aif1 protein, mouse; Calcium-Binding Proteins; Inflammation Mediators; Microfilament Proteins; Myelin Proteins; Progesterone, 57-83-0; RNA, Messenger; Transcription Factors
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03064522_v226_n_p40_Garay

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Citas:

---------- APA ----------
Garay, L.I., González Deniselle, M.C., Brocca, M.E., Lima, A., Roig, P. & De Nicola, A.F. (2012) . Progesterone down-regulates spinal cord inflammatory mediators and increases myelination in experimental autoimmune encephalomyelitis. Neuroscience, 226, 40-50.
http://dx.doi.org/10.1016/j.neuroscience.2012.09.032
---------- CHICAGO ----------
Garay, L.I., González Deniselle, M.C., Brocca, M.E., Lima, A., Roig, P., De Nicola, A.F. "Progesterone down-regulates spinal cord inflammatory mediators and increases myelination in experimental autoimmune encephalomyelitis" . Neuroscience 226 (2012) : 40-50.
http://dx.doi.org/10.1016/j.neuroscience.2012.09.032
---------- MLA ----------
Garay, L.I., González Deniselle, M.C., Brocca, M.E., Lima, A., Roig, P., De Nicola, A.F. "Progesterone down-regulates spinal cord inflammatory mediators and increases myelination in experimental autoimmune encephalomyelitis" . Neuroscience, vol. 226, 2012, pp. 40-50.
http://dx.doi.org/10.1016/j.neuroscience.2012.09.032
---------- VANCOUVER ----------
Garay, L.I., González Deniselle, M.C., Brocca, M.E., Lima, A., Roig, P., De Nicola, A.F. Progesterone down-regulates spinal cord inflammatory mediators and increases myelination in experimental autoimmune encephalomyelitis. Neuroscience. 2012;226:40-50.
http://dx.doi.org/10.1016/j.neuroscience.2012.09.032