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https://www.readbyqxmd.com/read/28522265/screening-for-bioactive-natural-products-from-a-67-compound-library-of-glycyrrhiza-inflata
#1
Yan Lin, Yi Kuang, Kai Li, Shuang Wang, Wei Song, Xue Qiao, Gulnar Sabir, Min Ye
Licorice shows a variety of pharmacological activities. This work aims to discover bioactive natural products from one botanical source of licorice, Glycyrrhiza inflata. A total of 67 free phenolics were isolated to form a compound library. Based on the bioactivities of licorice, these compounds were screened using cell- or enzyme-based bioassay methods. A total of 11 compounds exhibited potent cytotoxic activities against three human cancer cell lines (HepG2, SW480 and MCF7), while showed little toxicity on human normal cell lines LO2 and HEK293T...
May 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28506909/the-selective-effect-of-glycyrrhizin-and-glycyrrhetinic-acid-on-topoisomerase-ii%C3%AE-and-apoptosis-in-combination-with-etoposide-on-triple-negative-breast-cancer-mda-mb-231-cells
#2
Yun Cai, Boxin Zhao, Qianying Liang, Yunqi Zhang, Jieying Cai, Guofeng Li
Triple negative breast cancer(TNBC) has generated growing interests due to its aggressive biologic behavior and absence of targeted therapy approach. Glycyrrhizin(GL) from licorice root and its metabolite, glycyrrhetinic acid(GA) have shown extensive bioactivities in clinic. Here, we demonstrate that GL and GA have contrary anti-cancer effect on TNBC MDA-MB-231 cells. Beside its inhibition of cell proliferation, GA at non-cytotoxic concentration showed synergistic effect in combination with anti-cancer drug, etoposide(VP-16)...
May 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28499205/comparative-metabolomics-analysis-for-the-compatibility-and-incompatibility-of-kansui-and-licorice-with-different-ratios-by-uhplc-qtof-ms-and-multivariate-data-analysis
#3
Juan Shen, Zong-Jin Pu, Jun Kai, An Kang, Yu-Ping Tang, Li-Li Shang, Gui-Sheng Zhou, Zhen-Hua Zhu, Er-Xin Shang, Shao-Ping Li, Yu-Jie Cao, Wei-Wei Tao, Shu-Lan Su, Li Zhang, Huiping Zhou, Da-Wei Qian, Jin-Ao Duan
Kansui, the root of Euphorbia kansui T.N. Liou ex T.P. Wang (Euphorbiaceae), is a well-known poisonous traditional Chinese medicine (TCM). However, many monographs of TCM indicated that it cannot be co-used with licorice, as kansui-licorice is a typical "eighteen incompatible" medicaments. Our previous studies have indicated that kansui was effective in treating malignant pleural effusion (MPE), and the efficacy could be weakened by the co-use of licorice, even causing serious toxicity at the given ratio. Nevertheless, the actual mechanisms of their dosage-toxicity-efficacy relationship need to be well clarified...
April 26, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28484719/glycyrrhizin-protects-rats-from-sepsis-by-blocking-hmgb1-signaling
#4
Feng Zhao, Yong Fang, Shuixiang Deng, Xiantao Li, Yun Zhou, Ye Gong, Hechen Zhu, Wei Wang
Background. HMGB1 acts as an important inflammatory mediator and is a potential therapeutic target for sepsis. Glycyrrhizin (GL), a natural triterpene glycoside derived from licorice, has been demonstrated to inhibit HMGB1 activity. The aim of this study is to explore how GL affects the HMGB1 signaling in sepsis. Methods. We used a CLP model of sepsis and in vitro LPS or HMGB1-treated NR8383 cells to examine the effects of GL on expression of HMGB1 and proinflammatory cytokines. Furthermore, we explored the effect of GL on interactions between HMGB1 and RAGE or TLR4 and the activations of NF-κB and MAPKs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28464803/the-repressive-effect-of-mir-148a-on-wnt-%C3%AE-catenin-signaling-involved-in-glabridin-induced-anti-angiogenesis-in-human-breast-cancer-cells
#5
Juan Mu, Dongmei Zhu, Zhaoxia Shen, Shilong Ning, Yun Liu, Juan Chen, Yuan Li, Zhong Li
BACKGROUND: Glabridin (GLA), a major component extracted from licorice root, has anti-inflammatory and antioxidant activities, but few studies report its mechanism of inhibition of angiogenesis. This study was an extension of our previous work, which demonstrated that GLA suppressed angiogenesis in human breast cancer (MDA-MB-231 and Hs-578T) cells. Breast cancer is one of the most common malignant diseases in females worldwide, and the major cause of mortality is metastasis that is primarily attributed to angiogenesis...
May 2, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28454311/antitumor-effects-and-the-underlying-mechanism-of-licochalcone-a-combined-with-5-fluorouracil-in-gastric-cancer-cells
#6
Xiaolin Lin, Lei Tian, Lisha Wang, Wenyan Li, Qi Xu, Xiuying Xiao
Licochalcone A (LCA) is a flavonoid extracted from licorice root that has antiparasitic, antibacterial and antitumor properties. Previous studies have revealed that LCA may be a novel treatment for gastric cancer. The present study further assessed the potential antitumor effects of LCA alone or in combination with 5-fluorouracil (5-FU), and the underlying mechanisms responsible for those effects in gastric cancer cells. The effects of LCA alone or in combination with 5-FU on SGC7901 and MKN-45 gastric cancer cell lines were studied using Cell Counting Kit-8, cell cycle, apoptosis and western blot analyses of cell check points and apoptosis-associated proteins...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28447397/an-lc-ms-ms-method-for-determination-of-bioactive-components-of-licorice-and-semen-strychni-in-rat-plasma-application-to-a-pharmacokinetics-study
#7
Min Zhang, Yang Deng, Chao Wang, Hua-Lin Cai, Jing-Wen, Ping-Fei Fang, Bi-Kui Zhang, Huan-De Li, Miao Yan
Semen Strychni is known for its treatment of rheumatic arthritis with a low therapeutic index. Licorice contributes a lot in herb detoxification according to the traditional Chinese medicine theory. A simple, rapid and sensitive liquid chromatography-mass spectrometric method was developed and validated for simultaneous determination of main bioactive ingredients in licorice and Semen Strychni in rat plasma. Using moclobemide and cyproterone acetate as the internal standards, the analytes were pretreated via protein precipitation with methanol...
April 26, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28416456/licoricidin-inhibits-the-growth-of-sw480-human-colorectal-adenocarcinoma-cells-in-vitro-and-in-vivo-by-inducing-cycle-arrest-apoptosis-and-autophagy
#8
Shuai Ji, Shunan Tang, Kai Li, Ziwei Li, Wenfei Liang, Xue Qiao, Qi Wang, Siwang Yu, Min Ye
Licorice (Glycyrrhiza uralensis Fisch.) possesses significant anti-cancer activities, but the active ingredients and underlying mechanisms have not been revealed. By screening the cytotoxic activities of 122 licorice compounds against SW480 human colorectal adenocarcinoma cells, we found that licoricidin (LCD) inhibited SW480 cell viability with an IC50 value of 7.2μM. Further studies indicated that LCD significantly induced G1/S cell cycle arrest and apoptosis in SW480 cells, accompanied by inhibition of cyclins/CDK1 expression and activation of caspase-dependent pro-apoptotic signaling...
July 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28414158/methotrexate-hepatotoxicity-is-associated-with-oxidative-stress-and-down-regulation-of-ppar%C3%AE-and-nrf2-protective-effect-of-18%C3%AE-glycyrrhetinic-acid
#9
Ayman M Mahmoud, Omnia E Hussein, Walaa G Hozayen, Sanaa M Abd El-Twab
18β-glycyrrhetinic acid (18β-GA) is a bioactive component of licorice with promising hepatoprotective activity. However, its protective mechanism on methotrexate (MTX) hepatotoxicity in not well defined. We investigated the hepatoprotective effect of 18β-GA, pointing to the role of peroxisome proliferator activated receptor gamma (PPARγ) and the redox-sensitive nuclear factor erythroid 2-related factor 2 (Nrf2). Wistar rats were orally administered 18β-GA (50 and 100 mg/kg) 7 days either before or after MTX injection...
April 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28403270/evidence-for-anti-aging-south-korean-cosmeceuticals
#10
Ellinor R Quay, Yunyoung C Chang, Emmy Graber
<p>As the market for South Korean skin care products grows in the U.S. and worldwide, consumers will increasingly seek advice from dermatologists regarding their efficacy. In this paper, the evidence behind the anti-aging and skin whitening activity of ingredients in the most popular South Korean skin care products was reviewed and critically evaluated. Industry profit data from Euromonitor was obtained to identify the top cosmeceutical brands by retail value in South Korea. The top selling products and their ingredients were then identified from individual brand websites...
April 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28391664/effect-of-green-tea-added-tablets-on-volatile-sulfur-containing-compounds-in-the-oral-cavity
#11
Pier Francesco Porciani, Simone Grandini
OBJECTIVES: A controlled, clinical, double-blind, cross-over study was conducted to assess the efficacy of sugar-free tablets containing green tea extract on oral volatile sulfur-containing compounds (VSC) versus placebo tablets for 30 minutes. METHODS: To join the study, subjects had to have at least 24 teeth, no report of oral and systemic diseases, and no removable dentures. All eligible participants had to avoid professional oral hygiene and drugs for two weeks, to not be menstruating, to avoid brushing their teeth and tongue, to not smoke, to not consume alcohol, coffee or tea, nor onion, garlic, or licorice for six hours before the test...
December 2016: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/28366770/a-bio-cultural-approach-to-the-study-of-food-choice-the-contribution-of-taste-genetics-population-and-culture
#12
Davide S Risso, Cristina Giuliani, Marco Antinucci, Gabriella Morini, Paolo Garagnani, Sergio Tofanelli, Donata Luiselli
The study of food choice, one of the most complex human traits, requires an integrated approach that takes into account environmental, socio-cultural and biological diversity. We recruited 183 volunteers from four geo-linguistic groups and highly diversified in terms of both genetic background and food habits from whom we collected genotypes and phenotypes tightly linked to taste perception. We confirmed previous genetic associations, in particular with stevioside perception, and noted significant differences in food consumption: in particular, broccoli, mustard and beer consumption scores were significantly higher (Adjusted P = 0...
March 31, 2017: Appetite
https://www.readbyqxmd.com/read/28293388/protective-role-of-licochalcone-b-against-ethanol-induced-hepatotoxicity-through-regulation-of-erk-signaling
#13
Xiao-Peng Gao, Dong-Wei Qian, Zhen Xie, Hao Hui
OBJECTIVES: Oxidative stress has been established as a key cause of alcohol-induced hepatotoxicity. Licochalcone B, an extract of licorice root, has shown antioxidative properties. This study was to investigate the effects and mechanisms of licochalcone B in ethanol-induced hepatic injury in an in vitro study. MATERIALS AND METHODS: An in vitro model of Ethanol-induced cytotoxicity in BRL cells was used in this study. Cell injury was assessed using WST-1 assay and lactate dehydrogenase, alanine transaminase, and aspartate aminotransferase release assay...
February 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28276791/licorice-induced-hypertension-a-case-of-pseudohyperaldosteronism-due-to-jelly-bean-ingestion
#14
Christopher A Foster, Kristen S Church, Megha Poddar, Stan H M Van Uum, Tamara Spaic
Hypertension is one of the most common problems encountered in the primary care setting. Numerous secondary causes of hypertension exist and are potentially reversible. The ability to screen for such causes and manage them effectively may spare patients from prolonged medical therapy and hypertensive complications. Licorice can cause hypertension and hypokalemia due its effects on cortisol metabolism. We report a case of jelly bean ingestion that highlights the presentation, pathophysiology and management of licorice-induced hypertension...
April 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28272690/licorice-and-its-active-compound-glycyrrhizic-acid-ameliorates-cisplatin-induced-nephrotoxicity-through-inactivation-of-p53-by-scavenging-ros-and-overexpression-of-p21-in-human-renal-proximal-tubular-epithelial-cells
#15
S-M Ju, M-S Kim, Y-S Jo, Y-M Jeon, J-S Bae, H-O Pae, B-H Jeon
OBJECTIVE: Nephrotoxicity is one of the major side effects that limit the use of cisplatin in cancer therapy. Cisplatin-induced apoptosis in renal cells is associated with reactive oxygen species (ROS)-mediated p53 activation. Licorice (Glycyrrhiza uralensis Fischer) is one of the most widely used medicinal herbs in Korea, China and Japan. The aim of the study was to evaluate the protective effects of licorice extract (LE) and its active compound glycyrrhizic acid (GA) against cisplatin-induced nephrotoxicity in human renal proximal tubular epithelial (HK-2) cells...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28272545/glycyrrhiza-uralensis-water-extract-enhances-dendritic-cell-maturation-and-antitumor-efficacy-of-hpv-dendritic-cell-based-vaccine
#16
Adila Aipire, Jinyu Li, Pengfei Yuan, Jiang He, Yelang Hu, Lu Liu, Xiaoli Feng, Yijie Li, Fuchun Zhang, Jianhua Yang, Jinyao Li
Licorice has been used as herbal medicine and natural sweetener. Here, we prepared Glycyrrhiza uralensis water extract (GUWE) and investigated the effect of GUWE on the maturation and function of dendritic cells (DCs) and its adjuvant effect on DC-based vaccine. We observed that GUWE dose-dependently promoted DC maturation and cytokine secretion through TLR4 signaling pathway. The capacity of DC to stimulate allogenic splenocyte proliferation was also enhanced by GUWE treatment. Compared with control group, GUWE treated DCs pulsed with human papillomavirus (HPV)-16 E6/E7 peptides significantly inhibited the tumor growth in both early and late therapeutic groups...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28238265/new-sweet-tasting-oleanane-type-triterpenoid-saponins-from-tugancao-derris-eriocarpa-how
#17
Hong-Xia Zhang, Guo Sun, Jian-Long Gu, Zhi-Zhi Du
With the aim to investigate the sweet-tasting compounds in Derris eriocarpa How (a substitute for licorice in "Zhuang" and "Dai" ethnopharmacy in Guangxi and Yunnan provinces of China) as well as to ascertain why the stem of D. eriocarpa can be used to substitute for licorice in the sweetness taste aspect, taste sensory-guided fractionation was conducted to isolate sweet constituents from the extract of D. eriocarpa. Four sweet-tasting triterpenoid saponins were obtained, including millettiasaponin A (1) and three new saponins named derrisaponins A-C (2-4)...
March 8, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28229156/protective-effect-of-isoliquiritin-against-corticosterone-induced-neurotoxicity-in-pc12-cells
#18
Yu-Zhi Zhou, Xiao Li, Wen-Xia Gong, Jun-Sheng Tian, Xiao-Xia Gao, Li Gao, Xiang Zhang, Guan-Hua Du, Xue-Mei Qin
Isoliquiritin, a flavonoid glycoside compound from licorice, possesses a broad spectrum of pharmacological activities including antioxidant, anti-inflammatory and anti-depression activities. However, the neuroprotective mechanisms of antidepressant effects remain unclear. In this study, the aim was to investigate the cytoprotective efficiency and potential mechanisms of isoliquiritin in corticosterone-damaged PC12 cells. The results of this study showed that pretreatment of PC12 cells with isoliquiritin significantly prevented corticosterone-induced cell apoptosis...
February 23, 2017: Food & Function
https://www.readbyqxmd.com/read/28221957/ochratoxin-a-concentrations-in-a-variety-of-grain-based-and-non-grain-based-foods-on-the-canadian-retail-market-from-2009-to-2014
#19
Beata Kolakowski, Sarah M O'Rourke, Henri P Bietlot, Karl Kurz, Barbara Aweryn
The extent of ochratoxin A (OTA) contamination of domestically produced foods sold across Canada was determined from 2009 to 2014 with sampling and testing occurring each fiscal year. Cereal-based, fruit-based, and soy-based food samples (n = 6,857) were analyzed. Almost half of the samples (3,200; 47%) did not contain detectable concentrations of OTA. The remaining 3,657 samples contained OTA at 0.040 to 631 ng/g. Wheat, oats, milled products of other grains (such as rye and buckwheat), and to a lesser extent corn products and their derived foods were the most significant potential sources of OTA exposure for the Canadian population...
December 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221885/antibacterial-and-antiadhesive-activities-of-extracts-from-edible-plants-against-soft-drink-spoilage-by-asaia-spp
#20
Hubert Antolak, Agata Czyzowska, Dorota Kregiel
This study was conducted to investigate the antibacterial and antiadhesive activities of ethanol extracts from five edible plant parts: cinnamon bark ( Cinnamomum zeylanicum ), licorice root ( Glycyrrhiza radix ), nettle leaves ( Urtica dioica ), green tea leaves ( Camellia sinensis ), and elderberry flowers ( Sambucus nigra ). The chemical constituents of the extracts were identified using high-performance liquid chromatography and liquid chromatography plus mass spectrometry. Six strains of Asaia lannensis and Asaia bogorensis bacteria isolated from spoiled commercial fruit-flavored noncarbonated mineral water were used...
January 2017: Journal of Food Protection
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