Given worldwide increases in the incidence of obesity and type 2 diabetes, new strategies for preventing and treating metabolic diseases are needed. The nuclear receptor PPARγ (peroxisome proliferator-activated receptor gamma) plays a central role in lipid and glucose metabolism; however, current PPARγ-targeting drugs are characterized by undesirable side effects. Natural products from edible biomaterial provide a structurally diverse resource to alleviate complex disorders via tailored nutritional intervention. We identified a family of natural products, the amorfrutins, from edible parts of two legumes, Glycyrrhiza foetida and Amorpha fruticosa, as structurally new and powerful antidiabetics with unprecedented effects for a dietary molecule. Amorfrutins bind to and activate PPARγ, which results in selective gene expression and physiological profiles markedly different from activation by current synthetic PPARγ drugs. In diet-induced obese and db/db mice, amorfrutin treatment strongly improves insulin resistance and other metabolic and inflammatory parameters without concomitant increase of fat storage or other unwanted side effects such as hepatoxicity. These results show that selective PPARγ-activation by diet-derived ligands may constitute a promising approach to combat metabolic disease.nuclear receptors | nutrition | compound screening | organic synthesis | x-ray structure
Background:Kingiodendron pinnatum Rox. Hams. is an endangered medicinal plant used in gonorrhoe, catarrhal conditions of genito-urinary and respiratory tracts. The scientific and pharmacological formulation of K. pinnatum has not been established so far though it is being traditionally used by tribes of the region.Objective:P hytochemical screening and identification of the bioactive compounds from the ethyl acetate extract of Kingiodendron pinnatum Rox. Hams.Materials and Methods:Chromatographic separation was carried out by thin layer chromatography and column chromatography. Bio-autography of the column fractioned extract and TLC chromatogram were evaluated in vitro for antibacterial activity. The PTLC, HP TLC were used for crude extract and HPLC, LCMS, FTIR, 1HNMR and 13CNMR were employed for the isolated compound in the ethyl acetate extract of K. pinnatum.Results:Evaluation of solvent system for chromatographic separation revealed that ethyl acetate: petroleum ether in the ratio of 7:2.5 ml was the most appropriate one for the separation of diterpene compounds. The antibacterial bio-autography screening of TLC separated compound showed positive activity with Staphylococcus aureus and negative activity with Escherichia coli. Spectroscopic analysis of the isolated compound from the ethyl acetate extract of K. pinnatum revealed the presence of diterpene compound.Conclusion:It is evident from the present study that the ethyl acetate extract of K. pinnatum is rich in diterpene compounds and having potential antibacterial activity.SUMMARY Novel extraction method for phytochemicls from Kingidendron pinnatum at RTAntibacterial property of diterpens extracted from Kingiodendron pinnatum Rox. Hams aganist S. aureus Abbreviations Used: TLC: Thin Layer Chromatography, PTLC: Preparatory Thin Layer Chromatography, HPTLC: High perormence Thin Layer chromatography, HPLC: High Performance Liquid Chromatography, LC-MS: Liquid chromatography Mass Spectra, FTIR: Fourier Transform Infrared Chromatography, NMR: Nuclear Magnetic Resonance
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