Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0013395 (dyspepsia)
 4,879 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Weichang'an (WCA) pill, a traditional Chinese patent medicine consisting of ten Chinese medicinal herbs, has been used to treat irritable bowel syndrome and functional dyspepsia for several decades. In this study, twelve bioactive constituents in the methanol extract of WCA were accurately identified since MS/MS fragmentation behavior of the references and the standards by using HPLC-DAD-ESI-MS/MS analysis and a reliable and accurate method for the simultaneous determination was developed. Twelve active components including costunolide and dehydrodehydrocostus lactone from the principal herb Radix Aucklandiae; naringin, hesperidin and neohesperidin from Fructus Aurantii; magnolol and honokiol from the ministerial herbs Cortex Magnoliae officinalis; aloe-emodin, rhein, emodin, chrysophanol and physcion from adjunctive and messenger herb Radix et Rhizoma Rhei were analyzed in the samples. The chromatographic separation was performed on a Kromasil C18 column with gradient elution of acetonitrile-methanol and 1.0% acetic acid water. In this condition, linearity, inter- and intra-day precision and accuracy were within acceptable ranges. The developed method showed satisfactory precision and accuracy with overall intra- and inter-day variations of 0.68-1.33% and 0.67-2.05% respectively, and the overall recoveries of 97.54-102.69% for twelve compounds. The proposed approach was successfully applied as a powerful tool for the quality control of WCA pill.
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PMID:Identification and Simultaneous Determination of Twelve Active Components in the Methanol Extract of Traditional Medicine Weichang'an Pill by HPLC-DAD-ESI-MS/MS. 2425 May 67

Some Gentiana species have been used by the nomadic people of Siberia as bitter teas or appetizers to eliminate digestive disorders (dyspepsia, heartburn, nausea, etc.). We studied the most frequently used gentians: Gentiana algida, G. decumbens, G. macrophylla and G. triflora. The aim of the present study was to evaluate the phytochemical features and gastrostimulatnt activity of these four gentian herbs. Five iridoids, seven flavones and mangiferin were detected in gentian herbs after analysis by microcolumn-RP-HPLC-UV-ESI-MS. A componential phytochemical profile of the G. decumbens herb is presented for the first time, as well as information about distinct phytochemicals found in gentian herbs. HPLC quantification of the specific compounds of gentian herbs demonstrated the high content of iridoids (24.73-73.53 mg/g) and flavonoids (12.92-78.14 mg/g). The results of biological activity evaluation of four gentian decoctions demonstrated their good ability to stimulate acid-, enzyme- and mucin-forming functions of the stomach attributed to mostly by iridoids and flavonoids. In general, it can be claimed that the gentian decoctions can be used as effective and safe appetizers and are also a good source of biologically active agents.
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PMID:Iridoids and Flavonoids of Four Siberian Gentians: Chemical Profile and Gastric Stimulatory Effect. 2650 31

The Nitraria tangutorum Bobr. fruit is an indigenous berry of the shrub belonging to the Zygophyllaceae family which grows at an altitude of over 3000 m in the Tibetan Plateau, and has been used as a native medicinal food for treating weakness of the spleen, stomach syndrome, dyspepsia, neurasthenia, dizziness, etc. for thousands of years. Nowadays, N. tangutorum industrial juice by-products generated from health food production can be a potential low cost source of some unique bioactive ingredients. In a prior study, we established a simultaneous microwave/ultrasonic assisted enzymatic extraction method for extracting antioxidant ingredients from the industrial by-products of N. tangutorum juice. In this study, these ingredients were selectively fractionated by cation-exchange resin chromatography to obtain an anthocyanin fraction namely NJBAE. NJBAE was found to be composed of 16 anthocyanins derived from six anthocyanidins by HPLC-ESI-MS, and has an appreciable cardioprotective effect on doxorubicin-induced injured H9c2 cardiomyocytes. The cardioprotective mechanism research showed that NJBAE could directly scavenge ROS, restrict further generation of ROS, promote the activity of key antioxidase, enhance glutathione redox cycling, then affect the apoptotic signaling changes in a positive way, and finally mediate caspase-dependent cell death pathways. Therefore, NJBAE has great potential to be used for preventing and treating cardiovascular disease in the food, pharmaceutical and other emerging industries.
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PMID:Characterization and cardioprotective activity of anthocyanins from Nitraria tangutorum Bobr. by-products. 2870 96