Artículo
Progesterone treatment reduces NADPH-diaphorase/Nitric oxide synthase in Wobbler mouse motoneuron disease
Gonzalez Deniselle, Maria Claudia
; Garay, Laura Ines
; López, Juan José
; Gonzalez, Susana Laura
; Mougel, Analía; Guennoun, Rachida; Schumacher, Michael; de Nicola, Alejandro Federico
Fecha de publicación:
12/2004
Editorial:
Elsevier Science
Revista:
Brain Research
ISSN:
0006-8993
e-ISSN:
1872-6240
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Previous work demonstrated that progesterone (PROG) treatment attenuates morphological, molecular and functional abnormalities in the spinal cord of the Wobbler (Wr) mouse, a genetic model of motoneuron degeneration. Wr mice show a marked up-regulation of the nitric oxide synthesizing enzyme (NOS). Since nitric oxide is a highly reactive species, it may play a role in neuropathology of Wr mice. We now studied if PROG neuroprotection involved changes of NOS activity in motoneurons and astrocytes, determined by the nicotinamide adenine dinucleotide phosphate-diaphorase (NADPHD) histochemical reaction. Two and four-month-old Wr mice at the progressive and stabilization stages of the disease, respectively, and their age-matched controls were left untreated or received a single 20-mg PROG pellet for 18 days. PROG reduced the high number of NADPHD-active motoneurons and white matter astrocytes in 2-month-old Wr mice but was unable to change the low number of NADPHD-active motoneurons in 4-month-old Wr mice or astrocytes in this age group. A large number of motoneurons in 2-month-old Wr mice showed a vacuolated phenotype, which was significantly reverted by PROG treatment. In summary, PROG treatment during the early symptomatic stage of the disease caused a significant reduction of NADPHD-active motoneurons and astrocytes and also reduced vacuolated degenerating cells, suggesting that blockade of NO synthesis and oxidative damage may contribute to steroid neuroprotection.
Palabras clave:
Progesterone
,
Wobbler
,
Nitric Oxide Synthase
,
Nadph-Diaphorase
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBCN)
Articulos de INST.DE BIOLO.CEL.Y NEURCS."PROF.E.DE ROBERTIS"
Articulos de INST.DE BIOLO.CEL.Y NEURCS."PROF.E.DE ROBERTIS"
Articulos(IBYME)
Articulos de INST.DE BIOLOGIA Y MEDICINA EXPERIMENTAL (I)
Articulos de INST.DE BIOLOGIA Y MEDICINA EXPERIMENTAL (I)
Citación
Gonzalez Deniselle, Maria Claudia; Garay, Laura Ines; López, Juan José; Gonzalez, Susana Laura; Mougel, Analía; et al.; Progesterone treatment reduces NADPH-diaphorase/Nitric oxide synthase in Wobbler mouse motoneuron disease; Elsevier Science; Brain Research; 1014; 1-2; 12-2004; 71-79
Compartir
Altmétricas