Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord
It is now widely accepted that progesterone (PROG) brings neuroprotection in lesions of the peripheral and central nervous system. Spinal cord trauma leads to neuronal degeneration, astrogliosis, demyelination, and proliferation of oligodendrocyte-precursor cells (OPCs). In this work, we studied the...
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todo:paper_08977151_v23_n2_p181_Labombarda2023-10-03T15:43:56Z Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord Labombarda, F. Gonzalez, S. Deniselle, M.C.G. Garay, L. Guennoun, R. Schumacher, M. De Nicola, A.F. Myelin basic protein Neuroprotection NG2+ cells Oligodendrocytes Progesterone Spinal cord injury antibody cell marker messenger RNA myelin basic protein progesterone proteochondroitin sulfate proteoglycan NG2 unclassified drug animal experiment animal model animal tissue article astrocytosis cell proliferation controlled study demyelination gray matter immunohistochemistry lumbar spinal cord male motoneuron nerve cell degeneration neuroprotection nonhuman oligodendroglia protein expression pyramidal tract rat spinal cord injury stem cell thoracic spinal cord white matter Animals Antigens Cell Count Male Myelin Basic Proteins Oligodendroglia Progesterone Proteoglycans Rats Rats, Sprague-Dawley RNA, Messenger Spinal Cord Injuries Stem Cells It is now widely accepted that progesterone (PROG) brings neuroprotection in lesions of the peripheral and central nervous system. Spinal cord trauma leads to neuronal degeneration, astrogliosis, demyelination, and proliferation of oligodendrocyte-precursor cells (OPCs). In this work, we studied the effects of PROG on myelin-related parameters in rats with complete spinal cord transection (TRX). To this end, sham-operated controls and rats with TRX at thoracic level T10 received vehicle or PROG (4 mg/kg/day) during 3 days. Three variables were measured in the lumbar L4 region below the lesion: (1) expression of myelin basic protein (MBP) at the protein and mRNA levels; (2) density of NG2-immunopositive cells as markers for OPCs; and (3) number of cells immunopositive for RIP, an antibody staining mature oligodendrocytes. TRX decreased MBP immunostaining in the corticospinal tract (CST) and dorsal ascending tract (DAT) but not the ventral funiculus (VF). NG2 + cells, which were detected in low number in controls, increased after TRX in the gray and white matter. RIP-positive cell number, however, remained unchanged. PROG treatment of rats with TRX enhanced the expression of MBP protein and mRNA in CST and DAT, but not VF and highly stimulated the number of cells showing NG2 immunostaining over untreated lesioned rats. Instead, density of RIP positive cells was similar in the PROG-treated and untreated lesioned groups. We propose that PROG effects on expression of MBP and the number of NG2 immunopositive cells may contribute to neuroprotection, as they go in parallel with previous results showing enhanced biochemical and morphological parameters of motoneurons of animals with TRX receiving PROG treatment. © Mary Ann Liebert, Inc. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08977151_v23_n2_p181_Labombarda |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Myelin basic protein Neuroprotection NG2+ cells Oligodendrocytes Progesterone Spinal cord injury antibody cell marker messenger RNA myelin basic protein progesterone proteochondroitin sulfate proteoglycan NG2 unclassified drug animal experiment animal model animal tissue article astrocytosis cell proliferation controlled study demyelination gray matter immunohistochemistry lumbar spinal cord male motoneuron nerve cell degeneration neuroprotection nonhuman oligodendroglia protein expression pyramidal tract rat spinal cord injury stem cell thoracic spinal cord white matter Animals Antigens Cell Count Male Myelin Basic Proteins Oligodendroglia Progesterone Proteoglycans Rats Rats, Sprague-Dawley RNA, Messenger Spinal Cord Injuries Stem Cells |
| spellingShingle |
Myelin basic protein Neuroprotection NG2+ cells Oligodendrocytes Progesterone Spinal cord injury antibody cell marker messenger RNA myelin basic protein progesterone proteochondroitin sulfate proteoglycan NG2 unclassified drug animal experiment animal model animal tissue article astrocytosis cell proliferation controlled study demyelination gray matter immunohistochemistry lumbar spinal cord male motoneuron nerve cell degeneration neuroprotection nonhuman oligodendroglia protein expression pyramidal tract rat spinal cord injury stem cell thoracic spinal cord white matter Animals Antigens Cell Count Male Myelin Basic Proteins Oligodendroglia Progesterone Proteoglycans Rats Rats, Sprague-Dawley RNA, Messenger Spinal Cord Injuries Stem Cells Labombarda, F. Gonzalez, S. Deniselle, M.C.G. Garay, L. Guennoun, R. Schumacher, M. De Nicola, A.F. Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| topic_facet |
Myelin basic protein Neuroprotection NG2+ cells Oligodendrocytes Progesterone Spinal cord injury antibody cell marker messenger RNA myelin basic protein progesterone proteochondroitin sulfate proteoglycan NG2 unclassified drug animal experiment animal model animal tissue article astrocytosis cell proliferation controlled study demyelination gray matter immunohistochemistry lumbar spinal cord male motoneuron nerve cell degeneration neuroprotection nonhuman oligodendroglia protein expression pyramidal tract rat spinal cord injury stem cell thoracic spinal cord white matter Animals Antigens Cell Count Male Myelin Basic Proteins Oligodendroglia Progesterone Proteoglycans Rats Rats, Sprague-Dawley RNA, Messenger Spinal Cord Injuries Stem Cells |
| description |
It is now widely accepted that progesterone (PROG) brings neuroprotection in lesions of the peripheral and central nervous system. Spinal cord trauma leads to neuronal degeneration, astrogliosis, demyelination, and proliferation of oligodendrocyte-precursor cells (OPCs). In this work, we studied the effects of PROG on myelin-related parameters in rats with complete spinal cord transection (TRX). To this end, sham-operated controls and rats with TRX at thoracic level T10 received vehicle or PROG (4 mg/kg/day) during 3 days. Three variables were measured in the lumbar L4 region below the lesion: (1) expression of myelin basic protein (MBP) at the protein and mRNA levels; (2) density of NG2-immunopositive cells as markers for OPCs; and (3) number of cells immunopositive for RIP, an antibody staining mature oligodendrocytes. TRX decreased MBP immunostaining in the corticospinal tract (CST) and dorsal ascending tract (DAT) but not the ventral funiculus (VF). NG2 + cells, which were detected in low number in controls, increased after TRX in the gray and white matter. RIP-positive cell number, however, remained unchanged. PROG treatment of rats with TRX enhanced the expression of MBP protein and mRNA in CST and DAT, but not VF and highly stimulated the number of cells showing NG2 immunostaining over untreated lesioned rats. Instead, density of RIP positive cells was similar in the PROG-treated and untreated lesioned groups. We propose that PROG effects on expression of MBP and the number of NG2 immunopositive cells may contribute to neuroprotection, as they go in parallel with previous results showing enhanced biochemical and morphological parameters of motoneurons of animals with TRX receiving PROG treatment. © Mary Ann Liebert, Inc. |
| format |
JOUR |
| author |
Labombarda, F. Gonzalez, S. Deniselle, M.C.G. Garay, L. Guennoun, R. Schumacher, M. De Nicola, A.F. |
| author_facet |
Labombarda, F. Gonzalez, S. Deniselle, M.C.G. Garay, L. Guennoun, R. Schumacher, M. De Nicola, A.F. |
| author_sort |
Labombarda, F. |
| title |
Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| title_short |
Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| title_full |
Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| title_fullStr |
Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| title_full_unstemmed |
Progesterone increases the expression of myelin basic protein and the number of cells showing NG2 immunostaining in the lesioned spinal cord |
| title_sort |
progesterone increases the expression of myelin basic protein and the number of cells showing ng2 immunostaining in the lesioned spinal cord |
| url |
http://hdl.handle.net/20.500.12110/paper_08977151_v23_n2_p181_Labombarda |
| work_keys_str_mv |
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| _version_ |
1807323127392239616 |