Constituents of the flowers of Platycodon grandiflorum with inhibitory activity on advanced glycation end products and rat lens aldose reductase in vitro

2010 ◽  
Vol 33 (6) ◽  
pp. 875-880 ◽  
Author(s):  
Dae Sik Jang ◽  
Yun Mi Lee ◽  
Il Ha Jeong ◽  
Jin Sook Kim
Keyword(s):  
Aldose Reductase ◽  
Advanced Glycation End Products ◽  
Inhibitory Activity ◽  
Advanced Glycation ◽  
Platycodon Grandiflorum ◽  
Rat Lens Aldose Reductase ◽  
Glycation End Products ◽  
End Products

scholarly journals Inhibitory Activities ofStauntonia hexaphyllaLeaf Constituents on Rat Lens Aldose Reductase and Formation of Advanced Glycation End Products and Antioxidant

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Seung Hwan Hwang ◽  
Shin Hwa Kwon ◽  
Set Byeol Kim ◽  
Soon Sung Lim
Keyword(s):  
Aldose Reductase ◽  
Advanced Glycation End Products ◽  
Inhibitory Activity ◽  
Solvent System ◽  
Inhibitory Effect ◽  
Advanced Glycation ◽  
Rat Lens Aldose Reductase ◽  
Glycation End Products ◽  
End Products ◽  
Etoac Fraction

Stauntonia hexaphylla(Thunb.) Decne. (Lardizabalaceae) leaves (SHL) have been used traditionally as analgesics, sedatives, diuretics, and so on, in China. To date, no data have been reported on the inhibitory effect of SHL and its constituents on rat lens aldose reductase (RLAR) and advanced glycation end products (AGEs). Therefore, the inhibitory effect of compounds isolated from SHL extract on RLAR and AGEs was investigated to evaluate potential treatments of diabetic complications. The ethyl acetate (EtOAC) fraction of SHL extract showed strong inhibitory activity on RLAR and AGEs; therefore, EtOAc fraction (3.0 g) was subjected to Sephadex LH-20 column chromatography, for further fractionation, with 100% MeOH solvent system to investigate its effect on RLAR and AGEs. Phytochemical investigation of SHL led to the isolation of seven compounds. Among the isolated compounds, chlorogenic acid, calceolarioside B, luteolin-3′-O-β-D-glucopyranoside, quercetin-3-O-β-D-glucopyranoside, and luteolin-7-O-β-D-glucopyranoside exhibited significant inhibitory activity against RLAR with IC50in the range of 7.34–23.99 μM. In addition, 3-(3,4-dihydroxyphenyl) propionic acid, neochlorogenic acid, and luteolin-3′-O-β-D-glucopyranoside exhibited the most potent inhibitory activity against formation of AGEs, with an IC50value of 115.07–184.06 μM, compared to the positive control aminoguanidine (820.44 μM). Based on these findings, SHL dietary supplements could be considered for the prevention and/or treatment of diabetes complication.

scholarly journals Aldose reductase and advanced glycation end products formation inhibitory activity of standardized extracts of Picrorhiza kurroa (Royle ex benth) and Hibiscus rosa-sinensis (Linn.)

2017 ◽  
Author(s):  
Anasuri Santhosh ◽  
C. Veeresham ◽  
A. Rama Rao
Keyword(s):  
Aldose Reductase ◽  
Advanced Glycation End Products ◽  
Inhibitory Activity ◽  
Reference Compound ◽  
Advanced Glycation ◽  
Hibiscus Rosa Sinensis ◽  
Glycation End Products ◽  
End Products

Objective: The objectives were to study the in-vitro and in-vivo aldose reductase and in-vitro advanced glycation end products formation inhibitory activities of the standardized extracts of Picrorhiza kurroa roots and Hibiscus rosa-sinensis flowers.Methods: In-vitro Aldose reductase inhibitory activity was studied by using isolated rat lens and kidney Aldose reductase by UV-Visible spectro photo metric method by using Quercetin as reference compound. In-vivo Aldose reductase inhibitory activity was evaluated by using experimental rat models of galactosemia and the final lens galactitol was evaluated by High performance liquid chromatography and Gas chromatography methods by using Quercetin as reference compound. In-vitro advanced glycation end products formation inhibitory activity was estimated by using laboratory test reaction with protein and sugars by spectro fluorimetric method by sung aminoguanidine as reference compound. Statistical analysis of the results was done by using Analysis of the variance method.Results: The plant extracts were found to possess significant aldose reductase and advanced glycation end products formation inhibitory activity.Conclusions: More study is required for isolation and characterization of the chief chemical constituents responsible for the biological activity of the plant extracts.

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