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Abstract:

Progesterone is emerging as a myelinizing factor for central nervous system injury. Successful remyelination requires proliferation and differentiation of oligodendrocyte precursor cells (OPC) into myelinating oligodendrocytes, but this process is incomplete following injury. To study progesterone actions on remyelination, we administered progesterone (16 mg/kg/day) to rats with complete spinal cord injury. Rats were euthanized 3 or 21 days after steroid treatment. Short progesterone treatment (a) increased the number of OPC without effect on the injury-induced reduction of mature oligodendrocytes, (b) increased mRNA and protein expression for the myelin basic protein (MBP) without effects on proteolipid protein (PLP) or myelin oligodendrocyte glycoprotein (MOG), and (c) increased the mRNA for Olig2 and Nkx2.2 transcription factors involved in specification and differentiation of the oligodendrocyte lineage. Furthermore, long progesterone treatment (a) reduced OPC with a concomitant increase of oligodendrocytes; (b) promoted differentiation of cells that incorporated bromodeoxyuridine, early after injury, into mature oligodendrocytes; (c) increased mRNA and protein expression of PLP without effects on MBP or MOG; and (d) increased mRNA for the Olig1 transcription factor involved in myelin repair. These results suggest that early progesterone treatment enhanced the density of OPC and induced their differentiation into mature oligodendrocytes by increasing the expression of Olig2 and Nkx2.2. Twenty-one days after injury, progesterone favors remyelination by increasing Olig1 (involved in repair of demyelinated lesions), PLP expression, and enhancing oligodendrocytes maturation. Thus, progesterone effects on oligodendrogenesis and myelin proteins may constitute fundamental steps for repairing traumatic injury inflicted to the spinal cord. © 2008 Wiley-Liss, Inc.

Registro:

Documento: Artículo
Título:Effects of Progesterone on oligodendrocyte progenitors, oligodendrocyte transcription factors, and myelin proteins following spinal cord injury
Autor:Labombarda, F.; González, S.L.; Lima, A.; Roig, P.; Guennoun, R.; Schumacher, M.; 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, Buenos Aires, Argentina
UMR788 Inserm, University Paris-Sud 11, Kremlin-Bicêtre, France
Palabras clave:NG2 cells; Nkx2.2; Olig1; Olig2; Remyelination; Steroids; Trauma; broxuridine; messenger RNA; myelin basic protein; myelin oligodendrocyte glycoprotein; myelin protein; nucleic acid binding protein; oligodendrocyte transcription factor 1; oligodendrocyte transcription factor 2; progesterone; proteolipid protein; transcription factor; transcription factor Nkx2.2; unclassified drug; basic helix loop helix transcription factor; gestagen; homeodomain protein; messenger RNA; myelin associated glycoprotein; myelin protein; nerve protein; Nkx 2.2 homedomain protein; Nkx-2.2 homedomain protein; Olig1 protein, rat; oligodendrocyte myelin glycoprotein; oligodendrocyte-myelin glycoprotein; Plp1 protein, rat; progesterone; proteolipid protein; transcription factor; animal cell; animal experiment; animal model; article; cell count; cell density; cell function; cell lineage; cell proliferation; cell specificity; chronic drug administration; controlled study; demyelination; down regulation; drug mechanism; early intervention; gene expression regulation; hormone action; male; nerve cell differentiation; neural stem cell; nonhuman; nucleotide sequence; oligodendroglia; priority journal; protein expression; protein function; rat; remyelinization; short course therapy; spinal cord injury; upregulation; adult stem cell; animal; disease model; drug effect; genetics; metabolism; methodology; oligodendroglia; orchiectomy; Sprague Dawley rat; time; Adult Stem Cells; Animals; Basic Helix-Loop-Helix Transcription Factors; Disease Models, Animal; Gene Expression Regulation; Homeodomain Proteins; Male; Myelin Proteins; Myelin Proteolipid Protein; Myelin-Associated Glycoprotein; Nerve Tissue Proteins; Oligodendroglia; Orchiectomy; Progesterone; Progestins; Rats; Rats, Sprague-Dawley; RNA, Messenger; Spinal Cord Injuries; Time Factors; Transcription Factors
Año:2009
Volumen:57
Número:8
Página de inicio:884
Página de fin:897
DOI: http://dx.doi.org/10.1002/glia.20814
Título revista:GLIA
Título revista abreviado:GLIA
ISSN:08941491
CODEN:GLIAE
CAS:broxuridine, 59-14-3; progesterone, 57-83-0; Basic Helix-Loop-Helix Transcription Factors; Homeodomain Proteins; Myelin Proteins; Myelin Proteolipid Protein; Myelin-Associated Glycoprotein; Nerve Tissue Proteins; Nkx-2.2 homedomain protein; Olig1 protein, rat; Plp1 protein, rat; Progesterone, 57-83-0; Progestins; RNA, Messenger; Transcription Factors; oligodendrocyte-myelin glycoprotein
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08941491_v57_n8_p884_Labombarda

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Citas:

---------- APA ----------
Labombarda, F., González, S.L., Lima, A., Roig, P., Guennoun, R., Schumacher, M. & De Nicola, A.F. (2009) . Effects of Progesterone on oligodendrocyte progenitors, oligodendrocyte transcription factors, and myelin proteins following spinal cord injury. GLIA, 57(8), 884-897.
http://dx.doi.org/10.1002/glia.20814
---------- CHICAGO ----------
Labombarda, F., González, S.L., Lima, A., Roig, P., Guennoun, R., Schumacher, M., et al. "Effects of Progesterone on oligodendrocyte progenitors, oligodendrocyte transcription factors, and myelin proteins following spinal cord injury" . GLIA 57, no. 8 (2009) : 884-897.
http://dx.doi.org/10.1002/glia.20814
---------- MLA ----------
Labombarda, F., González, S.L., Lima, A., Roig, P., Guennoun, R., Schumacher, M., et al. "Effects of Progesterone on oligodendrocyte progenitors, oligodendrocyte transcription factors, and myelin proteins following spinal cord injury" . GLIA, vol. 57, no. 8, 2009, pp. 884-897.
http://dx.doi.org/10.1002/glia.20814
---------- VANCOUVER ----------
Labombarda, F., González, S.L., Lima, A., Roig, P., Guennoun, R., Schumacher, M., et al. Effects of Progesterone on oligodendrocyte progenitors, oligodendrocyte transcription factors, and myelin proteins following spinal cord injury. GLIA. 2009;57(8):884-897.
http://dx.doi.org/10.1002/glia.20814