ABSTRACT
Aims: In Ivory Coast, Mezoneuron angolenseroots are well-known in traditional medicine for their efficiency in the treatment of diarrhoea. The goal of this study was to determine the antibacterial constituents of these roots.Methodology:The chemical investigations of the roots of the plant havebeen undertaken and the structure of isolated compounds was elucidated through spectral studies including IR, UV, MS, 1D-NMR (1H and 13C NMR) and 2D-NMR experiments (HSQC, HMBC, COSY, and NOESY). The isolated compounds were screened against three enteropathogenic bacteria, Vibrio cholerae, Salmonella typhiand Shiguella fleneii,usingmicrobroth dilution method. Results:These investigations conducted to the isolation of two sterols, two stilbenes, one phthalate,and one carbohydrate. All tested compoundsexcept Bis (2-methylheptyl) phtalate (2) were active against all pathogens with MICs and MBCs ranging from 312.50 to 625 mg/ml. Piceatannol (5) and Trans-resveratrol (3) were the most active compounds.Conclusion:The results from the current study confirm and justify the popular use of the roots of this plant in the treatment of infectiousdiarrhoea. All obtained compounds were isolated from this species for the first time.
ABSTRACT
Objective To investigate the effect and its mechanism of D-pinitol on advanced glycation end products(AGEs)-induced proliferation and migration in mouse aortic vascular smooth muscle cells (VSMC).Methods VSMCs were isolated from mouse aorta and cultured in vitro.Effects of different concentrations of D-pinitol on proliferation and migration of VSMCs were observed by using the AGEs-induced glycosylation injury model of VSMCs.Cell proliferation and migration were detected by CCK-8 assay and cell scratch,respectively.The protein expression levels of transforming growth factor-β1(TGF-β1),p-smad2,p-smad3 and asporin were determined by Western blot.Results Compared with control group,AGEs group showed the increased protein expression levels of asporin,TGF-β1,p-smad2 and p-smad3 (40.06 ± 4.50 vs.17.47 ± 0.57),(55.25 ± 2.07 vs.14.42± 2.07),(0.97 ± 0.02 vs.0.47 ± 0.02),(0.45±0.01 vs.0.26 ± 0.02),all P＜ 0.01.Compared to AGEs group,D-pinitol group could inhibit the cell proliferation and migration and cause dose-dependent decreases of protein expressions of TGF-β1,p-smad2,p-smad3 and asporin(P ＜ 0.05 or P＜0.01).Conclusions D-pinitol can inhibit AGEs-induced cell proliferation and migration in mouse aortic VSMCs.Asporin may participate in the VSMCs extracellular matrix remodeling via TGF-β/smad pathway.