New pentacyclic triterpenoids isolated from Leptopus chinensis and their hepatoprotective activities on tert-butyl hydroperoxide-induced oxidative injury
Since the Great Oxidation Event, about 2.4 billion years ago, the Earth is immersed in an oxidizing atmosphere. Thus, it has been proposed that excess oxygen, originally a waste product of photosynthetic cyanobacteria, induced oxidative stress and the production of reactive oxygen species (ROS), which have since acted as fundamental drivers of biologic evolution and eukaryogenesis. Indeed, throughout an organism's lifespan, ROS affect directly (as mutagens) or indirectly (as messengers and regul...
Last. Jaana Kekäläinen(TUT: Tampere University of Technology)H-Index: 1
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This study focuses on the use and users of Finnish social science research data archive. Study is based on enriched user data of the archive from years 2015–2018. Study investigates the number and type of downloaded datasets, the number of citations for data, the demographics of data downloaders and the purposes data are downloaded for. Datasets were downloaded from the archive 10346 times. Majority of the downloaded datasets are quantitative. Quantitative datasets are also more often cited, but...
Phyllanthus niruri L. is a widespread tropical plant which is used in Ayurvedic system for liver and kidney ailments. The present study aims at specifying the most active hepatoprotective extract of P. niruri and applying a bio-guided protocol to identify the active compounds responsible for this effect. P. niruri aerial parts were extracted separately with water, 50%, 70% and 80% ethanol. The cytoprotective activity of the extracts was evaluated against CCl4-induced hepatotoxicity in clone-9 an...
Last. Luping Sha(SPU: Shenyang Pharmaceutical University)H-Index: 2
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Barrigenol-like triterpenoids (BATs) showed promising anti-tumor, anti-inflammatory and anti-Alzheimer's activities, while, the inhibitory strength was usually affected by their states with aglycones or glycosides. In order to find more BATs as new anti-tumor agents with much more efficiency, the chemical and pharmaceutical studies were carried out on the acid hydrolysate product (AHP) of Semen Aesculi crude extract. Thirteen BATs, including three new aglycones (1–3), two new glycosides (4, 5) a...
Last. Kang Ro Lee(SKKU: Sungkyunkwan University)H-Index: 37
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Abstract Investigation of the MeOH extract of Betula schmidtii twigs resulted in the isolation and identification of three new triterpenoids (1–3), along with ten known ones (4–13). The structures of new compounds (1–3) were elucidated by spectroscopic methods, including 1D, 2D NMR (1H and 13C NMR, COSY, HSQC, HMBC, and NOESY), HR-MS, and chemical methods. All the isolated compounds were evaluated for their cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines. Compound 11 exhibite...
Abstract Liver diseases are one of the leading causes of death in the world. In spite of tremendous advances in modern drug research, effective and safe hepatoprotective agents are still in urgent demand. Natural products are undoubtedly valuable sources for drug leads. A number of natural triterpenoids were reported to possess pronounced hepatoprotective effects, and triterpenoids have become one of the most important classes of natural products for hepatoprotective agents. However, the signifi...
Barrigenol-like triterpenoids containing angeloyl residues in their structures are unusual natural products. To discover the chemical constituents responsible for the antitumor activity of Xanthoceras sorbifolia Bunge, the present study was carried out using the husk of this crop. Ten angeloyl barrigenol triterpenoids, including seven new (1–7) and three known compounds (8–10), were isolated from the active fraction via the bioassay-guided method. The structures of the compounds were established...
#2Archana Mehta(Dr. Hari Singh Gour University)H-Index: 11
In recent years, medicinal plants have attracted huge attention due to their diverse range of biological and therapeutic properties. Evidences have been accumulated since ages to demonstrate promising potential of medicinal plants used in various traditional, complementary, and alternative systems especially for cancer treatment. Although several medicines are available in the market to treat various types of cancers, no drug is found to be fully effective and safe as anticancer therapy. The maj...
Liver disease is a major cause of illness and death worldwide. In China alone, liver diseases, primarily viral hepatitis (predominantly hepatitis B virus [HBV]), nonalcoholic fatty liver disease, and alcoholic liver disease, affect approximately 300 million people. The establishment of the Expanded Program on Immunization in 1992 has resulted in a substantial decline in the number of newly HBV-infected patients; however, the number of patients with alcoholic and nonalcoholic fatty liver diseases...