Effects of RedLiriope platyphyllaon NGF secretion ability, NGF receptor signaling pathway and γ-secretase components in NSE/hAPPsw transgenic mice expressing Alzheimer's Disease
Open Access
- 1 January 2012
- journal article
- Published by Springer Science and Business Media LLC in Laboratory Animal Research
- Vol. 28 (3), 155-63
- https://doi.org/10.5625/lar.2012.28.3.155
Abstract
Liriope platyphylla (LP) has long been regarded as a curative herb for the treatment of diabetes, asthma, and neurodegenerative disorders. To examine the therapeutic effects of Red LP (RLP) manufactured by steaming process on neurodegenerative disorders, significant alteration of the key factors influencing Alzheimer's Disease (AD) was detected in NSE/hAPPsw transgenic (Tg) mice after RLP treatment. The concentration of nerve growth factor (NGF) in serum increased in RLP-treated NSE/hAPPsw Tg mice compared with vehicle-treated Tg mice. However, downstream effectors of the NGF receptor signaling pathway, including TrkA and p75(NTR) proteins, were suppressed in RLP-treated NSE/hAPPsw Tg mice. Especially, Tg mice showed decreased levels of TrkA, p75(NTR), and RhoA expression. Production of Aβ-42 peptides was lower in RLP-treated NSE/hAPPsw Tg mice than in vehicle-treated Tg mice. Further, analysis of γ-secretase components showed that Aβ-42 peptide expression was downregulated. Of the four components, the expression of APH-1 and Nicastrin (NCT) decreased in RLP-treated NSE/hAPPsw Tg mice, whereas expression of PS-2 and Pen-2 was maintained or increased within the same group. Overall, these results suggest that RLP can help relieve neurodegenerative diseases, especially AD, through upregulation of NGF secretion ability, activation of NGF signaling pathway, downregulation of Aβ-42 peptide deposition, and alteration of γ-secretase components.Keywords
This publication has 27 references indexed in Scilit:
- Differential regulation of the biosynthesis of glucose transporters by the PI3-K and MAPK pathways of insulin signaling by treatment with novel compounds from Liriope platyphyllaInternational Journal of Molecular Medicine, 2011
- Oxidative insults to neurons and synapse are prevented by aged garlic extract and S-allyl-l-cysteine treatment in the neuronal culture and APP-Tg mouse modelJournal of Neurochemistry, 2010
- Neurite outgrowth induced by spicatoside A, a steroidal saponin, via the tyrosine kinase A receptor pathwayEuropean Journal of Pharmacology, 2009
- Intramuscular delivery of a single chain antibody gene reduces brain Aβ burden in a mouse model of Alzheimer's diseaseNeurobiology of Aging, 2009
- Pharmacological activity of sanchi ginseng (Panax notoginseng)Journal of Pharmacy and Pharmacology, 2006
- Endogenous IL-4 and IFN-γ are essential for expression of Th2, but not Th1 cytokine message during the early differentiation of human CD4+ T helper cellsHuman Immunology, 2004
- The insulin sensitizing effect of homoisoflavone-enriched fraction in Liriope platyphylla Wang et Tang via PI3-kinase pathwayLife Sciences, 2004
- The γ-secretase complex: machinery for intramembrane proteolysisCurrent Opinion in Neurobiology, 2004
- Alterations in behavior, amyloid p‐42, caspase‐3, and Cox‐2 in mutant PS2 transgenic mouse model of Alzheimer's diseaseThe FASEB Journal, 2002
- Ginsenoside Rh4, A Genuine Dammarane Glycoside from Korean Red GinsengPlanta Medica, 1996