Uses
Smilagenin (SMI) is a small-molecule steroidal sapogenin from Anemarrhena asphodeloides and Pelargonium hortorum widely used in traditional Chinese medicine for treating chronic neurodegeneration diseases[1].
Smilagenin (SMI) improves memory of aged rats by increasing the muscarinic receptor subtype 1 (M1)-receptor density[2].
Smilagenin (SMI) attenuates Aβ(25-35)-induced neurodegenerationvia stimulating the gene expression of brain-derived neurotrophic factor, may represents a novel therapeutic strategy for AD[3].
Definition
ChEBI: An oxaspiro compound that is(5beta,25R)-spirostan substituted by a beta-hydroxy group at position 3.
in vivo
Smilagenin (intragastric administration; 10 or 26 mg/kg, once daily; 60 days) prevents the impairment of dopaminergic neurons in chronic MPTP/probenecid-induced mouse model[2].
| Animal Model: | MPTP/probenecid-induced mouse model[2] |
| Dosage: | 10 or 26 mg/kg |
| Administration: | Intragastric administration; 10 or 26 mg/kg; once daily; 60 days |
| Result: | Ameliorated locomotor ability of MPTP/probenecid-lesioned mice. |
Purification Methods
Chromatograph smilagenin on active Al2O3 and elute with *C6H6, then recrystallise it from Me2CO, aqueous EtOH (m 187-188o) or MeOH. The acetate crystallises from MeOH with m 152o and [] D 25 -59.6o, [] 546 25 –68.9o (c 0.25, CHCl3). [Askew J Chem Soc 1399 1936 and 1402 1936, Scheer et al. J Am Chem Soc 77 6411955, Beilstein 19 III/IV 826.]
References
[1] He X, et al. Smilagenin Protects Dopaminergic Neurons in Chronic MPTP/Probenecid-Lesioned Parkinson's Disease Models. Front Cell Neurosci. 2019 Feb 5;13:18. DOI:
10.3389/fncel.2019.00018[2] Hu Y, et al. Regulation of M1-receptor mRNA stability by smilagenin and its significance in improving memory of aged rats. Neurobiol Aging. 2010 Jun;31(6):1010-9. DOI:
10.1016/j.neurobiolaging.2008.06.008[3] Zhang R, et al. Smilagenin attenuates beta amyloid (25-35)-induced degeneration of neuronal cells via stimulating the gene expression of brain-derived neurotrophic factor. Neuroscience. 2012 May 17;210:275-85 DOI:
10.1016/j.neuroscience.2012.03.017
