Ginsenoside Rbl attenuates beta-amyloid peptide25-35 -induced tau hyperphosphorylation in cortical neurons / 药学学报
Acta Pharmaceutica Sinica
;
(12): 225-230, 2005.
Artículo
en Chino
| WPRIM
| ID: wpr-241323
ABSTRACT
<p><b>AIM</b>To explore the effect and the possible mechanism of ginsenoside Rb1 on beta-amyloid peptide (beta-AP)(25-35) -induced tau protein hyperphosphorylation in cortical neurons.</p><p><b>METHODS</b>Western blotting and immunocytochemical staining were used to detect tau phosphorylation level, total tau and glycogen synthase kinase-3beta (GSK-3beta) in cortical neurons.</p><p><b>RESULTS</b>After exposure to beta-AP(25-35) (20 micromol x L(-1)) for 12 h, the levels of tau protein phosphorylation in the sites of Ser 396, Ser 199/202, Thr 231 and total tau were raised. Meanwhile, the expression of GSK-3beta also increased. Pretreatment with ginsenoside Rbl or lithium chloride, a specific inhibitor of GSK-3beta, markedly reduced beta-AP(25-35)-induced tau hyperphosphorylation and the expression of GSK-3beta.</p><p><b>CONCLUSION</b>Ginsenoside Rb1 can attenuate beta AP(25-35)-induced tau protein hyperphosphorylation in cortical neurons by inhibiting the expression of GSK-3beta.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Fragmentos de Péptidos
/
Farmacología
/
Fosforilación
/
Plantas Medicinales
/
Corteza Cerebral
/
Química
/
Péptidos beta-Amiloides
/
Proteínas tau
/
Ratas Sprague-Dawley
/
Biología Celular
Límite:
Animales
Idioma:
Chino
Revista:
Acta Pharmaceutica Sinica
Año:
2005
Tipo del documento:
Artículo
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