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https://www.readbyqxmd.com/read/28342583/affinity-chromatographic-methodologies-based-on-immobilized-voltage-dependent-anion-channel-isoform-1-and-application-in-protein-ligand-interaction-analysis-and-bioactive-compounds-screening-from-traditional-medicine
#1
Qian Li, Pan Qiao, Xiu Chen, Jing Wang, Liujiao Bian, Xiaohui Zheng
Voltage dependent anion channel isoform 1 (VDAC-1) serves as an attractive target of anti-cancer drugs by mediating the entry and exit of metabolites between cytoplasm and mitochondria. This work reports on the preparation of a VDAC-1-based bioaffinity chromatographic stationary phase by linking the protein on lecithin modified microspheres. An assay of chromatographic methods including frontal analysis, zonal elution, injection dependent analysis and nonlinear chromatography were utilized to investigate the bindings of ATP, NADH and NADPH to VDAC-1...
March 18, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28301949/phenolic-constituents-from-rheum-nobile-and-their-antioxidant-activity
#2
Ye Fei, Juan Wang, Bing Peng, Jiangnan Peng, Jing-Hong Hu, Zu-Ping Zeng, Jing Chen, Qi-En Li, Zeng-Ping Gao, Xing-Li Yan
Although the rhizomes of Rheum nobile Hook. f. et Thoms (Polygonaceae) are widely used in Tibetan medicine, no previous investigations regarding the biological activities and rarely chemical constituents of this plant have been reported. As part of an ongoing search for novel bioactive agents, a phytochemical investigation of R. nobile led to the isolation of two new compounds Rheumone B (1) and piceatannol-4'-O-β-D-(6″-O-acetyl)-glucoside (2), together with 15 known compounds by gel filtration over Sephadex LH-20 and preparative HPLC...
March 17, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28275293/therapeutic-mechanism-of-y%C3%A4-n-ch%C3%A3-n-h%C3%A4-o-decoction-in-hepatic-diseases
#3
REVIEW
Jian-Yuan Li, Hong-Yan Cao, Lin Sun, Run-Fei Sun, Chao Wu, Yan-Qin Bian, Shu Dong, Ping Liu, Ming-Yu Sun
Yīn-Chén-Hāo decoction (YCHD) is a traditional Chinese medicine formula composed of capillaris (Artemisia capillaris), gardenia (Gardenia jasminoides), and rhubarb (Rheum rhabarbarum) that is used for the treatment of damp-heat jaundice. In modern clinics, YCHD is mostly used for hepatic diseases. This review summarizes the biological activities of YCHD and its medical applications. The main active compounds of YCHD are chlorogenic acid, rhein, geniposide, emodin, and scoparone. The pharmacological actions of YCHD include inhibition of hepatic steatosis, apoptosis, necrosis, anti-inflammation, and immune regulation...
February 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28265541/rheum-turkestanicum-rhizomes-possess-anti-hypertriglyceridemic-but-not-hypoglycemic-or-hepatoprotective-effect-in-experimental-diabetes
#4
Mousa-Al-Reza Hadjzadeh, Ziba Rajaei, Esmaeil Khodaei, Maryam Malek, Habib Ghanbari
OBJECTIVE: Rheum turkestanicum (R. turkestanicum) rhizomes have been used in Iranain traditional medicine as an anti-diabetic agent. The purpose of the present investigation was to evaluate the anti-diabetic and antioxidant activities of R. turkestanicum rhizome extract in streptozotocin-induced diabetic rats. MATERIALS AND METHODS: Diabetes was induced by a single intraperitoneal injection of 55 mg/kg streptozotocin in male Wistar rats. Diabetic rats received the decoction extract of R...
January 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/28181315/emodin-a-natural-inhibitor-of-protein-kinase-ck2-suppresses-growth-hyphal-development-and-biofilm-formation-of-candida-albicans
#5
Monika Janeczko, Maciej Masłyk, Konrad Kubiński, Hieronim Golczyk
Emodin (1,3,8-trihydroxy-6-methyl-anthraquinone) is a natural secondary plant product, originally isolated from the rhizomes of Rheum palmatum. Many reports show its diuretic, vasorelaxant, anti-bacterial, anti-viral, anti-ulcerogenic, immunosuppressive, hepatoprotective, anti-inflammatory, and anti-cancer potential. Emodin is a pleiotropic molecule capable of interacting with several major molecular targets, e.g. NF-κB, AKT/mTOR, and STAT3. The compound can also act as an inhibitor of some protein kinases, with special affinity to protein kinase CK2...
February 8, 2017: Yeast
https://www.readbyqxmd.com/read/28178225/poloxamer-based-thermoreversible-gel-for-topical-delivery-of-emodin-influence-of-p407-and-p188-on-solubility-of-emodin-and-its-application-in-cellular-activity-screening
#6
Eunmi Ban, Mijung Park, Seonghee Jeong, Taekhyun Kwon, Eun-Hee Kim, Kiwon Jung, Aeri Kim
Emodin is a component in a Chinese herb, Rheum officinale Baill, traditionally used for diabetes and anticancer. Its poor solubility is one of the major challenges to pharmaceutical scientists. We previously reported on thermoreversible gel formulations based on poloxamer for the topical delivery of emodin. The present study was to understand the effect of poloxamer type on emodin solubility and its application in cellular activity screening. Various gel formulations composed of poloxamer 407 (P407), poloxamer 188 (P188) and PEG400 were prepared and evaluated...
February 7, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28116072/host-specificity-of-two-pollinating-seed-consuming-fly-species-is-not-related-to-soil-moisture-of-host-plant-in-the%C3%A2-high%C3%A2-himalayas
#7
Bo Song, Jürg Stöcklin, Yong-Qian Gao, De-Li Peng, Hang Sun
Studying the drivers of host specificity can contribute to our understanding of the origin and evolution of obligate pollination mutualisms. The preference-performance hypothesis predicts that host plant choice of female insects is related mainly to the performance of their offspring. Soil moisture is thought to be particularly important for the survival of larvae and pupae that inhabit soil. In the high Himalayas, Rheum nobile and R. alexandrae differ in their distribution in terms of soil moisture; that is, R...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28111967/rapid-identification-and-simultaneous-analysis-of-multiple-constituents-from-rheum-tanguticum-maxim-ex-balf-by-uplc-q-tof-ms
#8
Liang-Liang Gao, Tao Guo, Xu-Dong Xu, Jun-Shan Yang
Rhubarb contains biologically active compounds such as anthraquinones, anthrones, stilbenes and tannins. A rapid and efficient UPLC/Q-TOF-MS/MS method was developed and applied towards identifying the constituents of Rheum tanguticum Maxim. ex Balf. for the first time. Chemical constituents were separated and investigated by UPLC/Q-TOF-MS/MS in the negative ion mode. The ESI-MS(2) fragmentation pathways of four types of compounds were interpreted, providing a very useful guidance for the characterisation of different types of compounds...
January 23, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28031235/htp-nutraceutical-screening-for-histone-deacetylase-inhibitors-and-effects-of-hdacis-on-tumor-suppressing-mirnas-by-trichostatin-a-and-grapeseed-vitis-vinifera-in-hela-cells
#9
Elizabeth A Mazzio, Karam F A Soliman
BACKGROUND/AIM: Aggressive tumor malignancies are a consequence of delayed diagnosis, epigenetic/phenotype changes and chemo-radiation resistance. Histone deacetylases (HDACs) are a major epigenetic regulator of transcriptional repression, which are highly overexpressed in advanced malignancy. While original chemotherapy drugs were modeled after phytochemicals elucidated by botanical screenings, HDAC inhibitors (HDACi) such as apicidin, trichostatin A (TSA) and butyrate were discovered as products of fungus and microbes, in particular, gut microbiota...
January 2, 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28027536/effects-of-a-standardized-extract-of-rheum-turkestanicum-janischew-root-on-diabetic-changes-in-the-kidney-liver-and-heart-of-streptozotocin-induced-diabetic-rats
#10
Azar Hosseini, Hamid Mollazadeh, Mohammad Sadegh Amiri, Hamid Reza Sadeghnia, Ahmad Ghorbani
Numerus studies highlighted benefits of natural flavonoids in the management of diabetes. The present study was aimed to investigate the effects of a high flavonoids containing extract of Rheum turkestanicum on diabetic changes in different tissues. Male Wistar rats were divided into normal and streptozotocin-induced diabetic groups received saline or hydroalcoholic extract of R. turkestanicum root (100, 200 and 300mg/kg) through orogastric gavage for 4 weeks. Serum glucose, HbA1c, lipids, creatinine, uric acid, liver enzymes (alkaline phosphatase, aspartate aminotransferase and alanine aminotransferase), and cardiac enzymes (lactate dehydrogenase and creatine phosphokinase) in diabetic control group were significantly higher compared to normal control group (p<0...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27976036/lipoxygenase-inhibitory-constituents-from-rheum-undulatum-linn%C3%A3
#11
D H Park, J H Han, Y W Jung, J A Kim, B S Min
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27965575/san-huang-xie-xin-tang-constituents-exert-drug-drug-interaction-of-mutual-reinforcement-at-both-pharmacodynamics-and-pharmacokinetic-level-a-review
#12
REVIEW
Jiasi Wu, Yingfan Hu, Li Xiang, Sheng Li, Yi Yuan, Xiaomei Chen, Yan Zhang, Wenge Huang, Xianli Meng, Ping Wang
Inflammatory disorders underlie varieties of human diseases. San-Huang-Xie-xin-Tang (SHXXT), composed with Rhizoma Rhei (Rheum palmatum L.), Rhizoma Coptidis (Coptis chinensis Franch), and Radix Scutellaria (Scutellaria baicalensis Georgi), is a famous formula which has been widely used in the fight against inflammatory abnormalities. Mutual reinforcement is one of the basic theories of traditional Chinese medicine. Here this article reviewed and analyzed the recent research on (1) How the main constituents of SHXXT impact on inflammation-associated signaling pathway molecules...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27929444/using-light-microscopy-and-liquid-chromatography-tandem-mass-spectrometry-for-qualitative-and-quantitative-control-of-a-combined-three-herb-formulation-in-different-preparations
#13
Tun-Pin Hsueh, Wan-Ling Lin, Tung-Hu Tsai
Artemisia capillaries Thunb, Gardenia jasminoides Ellis, and Rheum officinale Baill have been combined to treat jaundice for thousands of years. Studies have revealed that these herbs induce anti-hepatic fibrosis and anti-hepatic apoptosis and alleviate hepatic oxidative stress. This study aims to determine the quality and quantity of an herbal formulation (Chinese name: Yin-Chen-Hao-Tang) using physical and chemical examinations. Physical examination of Yin-Chen-Hao-Tang in pharmaceutical herbal products, raw fiber powders, and decoction preparations was performed using Congo red and iodine-potassium staining...
December 6, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27891789/incorrect-panel-in-figure-3-of-the-article-by-ellman-et-al-arthritis-rheum-june-2012
#14
(no author information available yet)
No abstract text is available yet for this article.
December 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27882165/emodin-inhibits-migration-and-invasion-of-mhcc-97h-human-hepatocellular-carcinoma-cells
#15
Wanfu Lin, Maofeng Zhong, Shufang Liang, Yongan Chen, Dong Liu, Zifei Yin, Qingxin Cao, Chen Wang, Changquan Ling
Emodin, an anthraquinone derivative from the root and rhizome of Rheum palmatum L., was found to have antitumor effects in different types of cancer by regulating multi-molecular targets. The aim of the present study was to explore the effect of emodin on the migration and invasion of MHCC-97H human hepatocellular carcinoma cells and the underlying molecular mechanisms. Firstly, it was demonstrated that emodin can inhibit cell proliferation and induce apoptosis of cells in a time- and dose-dependent manner, using a MTT assay and flow cytometry, respectively...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27812335/rapid-hplc-quantification-approach-for-detection-of-active-constituents-in-modern-combinatorial-formula-san-huang-xie-xin-tang-shxxt
#16
Tung-Ying Wu, Fang-Rong Chang, Jing-Ru Liou, I-Wen Lo, Tang-Chia Chung, Li-Yao Lee, Chun-Chen Chi, Ying-Chi Du, Man-Hon Wong, Suh-Hang Hank Juo, Chun-Chen Lee, Yang-Chang Wu
San-Huang-Xie-Xin-Tang (SHXXT), one of the most important traditional Chinese medicinal formulas, is comprised by three herbal medicines, the rhizome of Rheum officinale [or Rheum tanguticum (Polygonaceae) (Dahuang in Chinese)], the root of Scutellaria baicalensis (Labiatae) (Huangqin in Chinese), and the rhizome of Coptis chinensis (Ranunculaceae) (Huanglian in Chinese) in the ratios of 2:1:1 or 1:1:1. This study is aimed to quantitate and qualify of SHXXT, by a rapid, convenient, and effective HPLC-PDA approach associated with LC-MS technique...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27790424/efficacy-of-aqueous-and-methanolic-extracts-of-rheum-spiciformis-against-pathogenic-bacterial-and-fungal-strains
#17
Khalid Bashir Dar, Aashiq Hussain Bhat, Shajrul Amin, Suhail Anees, Akbar Masood, Mohammed Iqbal Zargar, Showkat Ahmad Ganie
INTRODUCTION: Rheum spiciformis is a newly identified edible medicinal plant of genus Rheum. The plant is used to treat various diseases on traditional levels in Kashmir Valley, India. AIM: To evaluate the phytochemical screening, antibacterial and antifungal potential of aqueous and methanolic extracts of Rheum spiciformis, a traditionally used edible medicinal plant. MATERIALS AND METHODS: Methanolic and aqueous extracts of Rheum spiciformis were tested for their antimicrobial activities against six bacterial strains namely Bacillus subtilis, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus vulgaris and Escherichia coli and four fungal strains Penicillium chrysogenum, Aspergillus fumigatus, Candida albicans and Saccharomyces cerevisiae...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27769031/synthesis-sar-and-pharmacological-characterization-of-novel-anthraquinone-cation-compounds-as-potential-anticancer-agents
#18
Yanyan Zheng, Li Zhu, Lulu Fan, Wenna Zhao, Jianlong Wang, Xianxiao Hao, Yunhui Zhu, Xiufang Hu, Yaofeng Yuan, Jingwei Shao, Wenfeng Wang
Emodin, a natural anthraquinone derivative isolated from Rheum palmatum L., has been demonstrated to exhibit good anti-cancer effect. In this study, a series of novel quaternary ammonium salts of emodin, anthraquinone and anthrone were synthesized and their anticancer activities were tested in vitro. The effects of emodin quaternary ammonium salts on cell viability, apoptosis, intracellular ROS, and mitochondrial membrane potential were investigated in A375, BGC-823, HepG2 and HELF cells. The results demonstrated that compound 4a induced morphological changes and decreased cell viability...
January 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27765358/sennoside-a-derived-from-the-traditional-chinese-medicine-plant-rheum-l-is-a-new-dual-hiv-1-inhibitor-effective-on-hiv-1-replication
#19
Francesca Esposito, Ilaria Carli, Claudia Del Vecchio, Lijia Xu, Angela Corona, Nicole Grandi, Dario Piano, Elias Maccioni, Simona Distinto, Cristina Parolin, Enzo Tramontano
BACKGROUND: Despite the availability of effective antiretroviral therapies, drugs for HIV-1 treatment with new mode of action are still needed. An innovative approach is aimed to identify dual HIV-1 inhibitors, small molecules that can inhibit two viral functions at the same time. Rhubarb, originated from Rheum palmatum L. and Rheum officinale Baill., is one of the earliest and most commonly used medicinal plants in Traditional Chinese Medicine (TCM) practice. We wanted to explore TCM for the identification of new chemical scaffolds with dual action abilities against HIV-1...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27706568/comparison-of-methods-to-preserve-rheum-palmatum-polygonaceae-for-efficient-dna-extraction-and-pcr-amplification
#20
M Huang, X J Sun, Y Zhou, X M Wang
In this study, we compared the quality of DNA extracted using the modified CTAB method, from Rheum palmatum leaves preserved using fourteen different methods, including ones used commonly in other species: under ultra-cold (-80°C) temperatures, after drying with an absorbent paper, desiccating using a silica gel, drying at 60°C, in 70% ethanol, absolute ethanol, 70% ethanol supplemented with 50 mM EDTA, SDS-DNA extracting solution, nuclear separation buffer, improved NaCl-CTAB solution, TE-buffer, I-solution, or II-solution...
August 19, 2016: Genetics and Molecular Research: GMR
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