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https://www.readbyqxmd.com/read/28937158/bioactivity-guided-isolation-of-neuritogenic-triterpenoids-from-the-leaves-of-ilex-latifolia-thunb
#1
Xueli Cao, Yu Liu, Jing Li, Lan Xiang, Hiroyuki Osada, Jianhua Qi
Ilex latifolia Thunb is a traditional Chinese tea and herbal medicine. In this study, one new triterpene saponin (1) and six known triterpenoids (2-7) were isolated from the methanol extract of I. latifolia using a PC12 cell bioassay system. The structures and stereochemistry of these compounds were elucidated using spectroscopic methods and chemical derivatization. This new triterpene saponin (1) was characterized as an ursolic type acid with a 19α-hydroxyl and a trisaccharide moiety at C-3. Compound 1 significantly promoted the neurite outgrowth in PC12 cells by 52% at 10 μM, whereas compounds 2-7 showed less neuritogenic activity...
September 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28929681/-chemical-constituents-of-scurrula-parasitica
#2
Quan-Yu Liu, Shan Feng, Yong-Hong Zhang, Feng Ni
A new triterpenoid ester, 7β-hydroxyl-hop-22(29)-en-3β-O-palmitate (1), was isolated from the stems and leaves of Scurrula parasitica parasitic on Nerium indicum, along with nine known compounds, uvaol (2), 3-epi-ursolic acid (3), 3β-hydroxyl-hop-22(29)-ene (4), 3β, 15α-dihydroxyl-lup-20(29)-ene (5), lup-20(29)-en-3-O-α-D-glucoside (6), stigmasterol-3-O-β-D-glucoside (7), digitoxin-3-O-α-D-glucoside (8), behenic acid (9), octacosyl alcohol (10). Their structures were elucidated using a combination of 1D and 2D NMR techniques (COSY, HMQC, and HMBC) and HR-ESI-MS analyses...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28911340/ursolic-acid-attenuates-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-nsclc-by-targeting-integrin-%C3%AE-v%C3%AE-5-mmps-signaling
#3
Jun Shan Ruan, Huan Zhou, Lin Yang, Ling Wang, Zong Sheng Jiang, Hong Sun, Shao Ming Wang
Transforming growth factor-β1 (TGF-β1)-induced epithelial-mesenchymal transition (EMT) of non-small-cell carcinoma (NSCLC) may contribute to tumor metastasis. TGF-β1-induced EMT in H1975 cells (a human NSCLC cell line) resulted in the adoption of mesenchymal responses that were predominantly mediated via the TGF-β1-integrin signaling pathway. Ursolic acid has been previously reported to inhibit tumor growth and metastasis in several cancers. However, whether ursolic acid can attenuate TGF-β1-induced EMT in H1975 cells and its underlying mechanisms remains unknown...
September 14, 2017: Oncology Research
https://www.readbyqxmd.com/read/28899512/nepeta-deflersiana-attenuates-isoproterenol-induced-myocardial-injuries-in-rats-possible-involvement-of-oxidative-stress-apoptosis-inflammation-through-nuclear-factor-nf-%C3%AE%C2%BAb-downregulation
#4
Areej Mohammad Al-Taweel, Mohammad Raish, Shagufta Perveen, Ghada Ahmed Fawzy, Ajaz Ahmad, Mushtaq Ahmad Ansari, Shahid Mudassar, Majid Ahmad Ganaie
BACKGROUND: Nepeta deflersiana (Lamiaceae) is a perennial herb used in the Saudi and Yemeni folk medicine as an anti-inflammatory, carminative, and antirheumatic agent. PURPOSE: This study explores the phytochemistry of the plant and the cardioprotective effect of N. deflersiana ethanolic extract (NDEE) against isoproterenol (ISP)-induced myocardial injury in rats. DESIGN/METHODS: Cardiac function, serum cardiac enzymes, myocardial antioxidants, inflammatory, and apoptotic biomarkers, and histopathological parameters were studied in ISP-injured Wistar rat heart tissues...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28888732/are-all-phytochemicals-useful-in-the-preventing-of-dna-damage
#5
REVIEW
Merve Bacanlı, Sevtap Aydın, A Ahmet Başaran, Nurşen Başaran
Phytochemicals derived from natural plants have been used commonly for the prevention and/or treatment of different diseases due to the belief of their safety. Many plant species synthesize toxic chemicals. New natural chemicals are being discovered but their toxic effects are unknown. Phytochemicals have been regarded as possible antioxidants. But on the other hand it is suggested that various phenolic antioxidants can display pro-oxidant properties at high doses. In this review, the role of some phytochemicals (epigallocathecin gallate, carvacrol, galangin, limonene, lycopene, naringin, puerarin, terpinene, thymol and ursolic acid) on the prevention of DNA damage will be discussed...
September 6, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28887915/hepatoprotective-naphthalene-diglucoside-from-neanotis-wightiana-aerial-parts
#6
Niranjan Das, Atanas G Atanasov, Prashanta Kumar Deb, Andrei Mocan, Seyed Mohammad Nabavi, Ranjib Ghosh, Biswanath Dinda
BACKGROUND: Neanotis wightiana (Wall. ex Wight & Arn) W.H. Lewis has been used in traditional medicine in India for the treatment of liver disorders. In fact, this plant is frequently used by the local people of Tripura for the treatment of liver disorder problems. In previous study on this plant we have isolated a hepatoprotective saponin, neanoside A. PURPOSE: Evaluation of in vivo hepatoprotective effects of isolated compounds from N. wightiana aerial parts on serum hepatic-biomarkers in CCl4- induced hepatotoxicity in rats to validate the traditional use of the plant...
September 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28884768/the-composition-of-potentially-bioactive-triterpenoid-glycosides-in-red-raspberry-is-influenced-by-tissue-extraction-procedure-and-genotype
#7
Gordon J McDougall, J William Allwood, Gema Pereira-Caro, Emma M Brown, Cheryl Latimer, Gary Dobson, Derek Stewart, Nigel G Ternan, Roger Lawther, Gloria O'Connor, Ian Rowland, Alan Crozier, Chris I R Gill
The beneficial effects of consumption of berry fruits on a range of chronic diseases has been attributed (at least in part) to the presence of unique phytochemicals. Recently, we identified novel ursolic acid-based triterpenoid glycosides (TTPNs) in raspberry fruit and demonstrated their survival in human ileal fluids after feeding which confirmed their colon-availability in vivo. In this paper, in vitro digestion studies demonstrated that certain TTPNs were stable under gastrointestinal conditions and confirmed that these components may have been responsible for bioactivity noted in previous studies...
September 8, 2017: Food & Function
https://www.readbyqxmd.com/read/28872612/fructus-ligustri-lucidi-in-osteoporosis-a-review-of-its-pharmacology-phytochemistry-pharmacokinetics-and-safety
#8
REVIEW
Beibei Chen, Lili Wang, Lin Li, Ruyuan Zhu, Haixia Liu, Chenyue Liu, Rufeng Ma, Qiangqiang Jia, Dandan Zhao, Jianzhao Niu, Min Fu, Sihua Gao, Dongwei Zhang
Background: Fructus Ligustri Lucidi (FLL) has now attracted increasing attention as an alternative medicine in the prevention and treatment of osteoporosis. This study aimed to provide a general review of traditional interpretation of the actions of FLL in osteoporosis, main phytochemical constituents, pharmacokinetics, pharmacology in bone improving effect, and safety. Materials and Methods: Several databases, including PubMed, China National Knowledge Infrastructure, National Science and Technology Library, China Science and Technology Journal Database, and Web of Science were consulted to locate publications pertaining to FLL...
September 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28869893/antioxidant-and-glucose-metabolizing-potential-of-edible-insect-brachytrupes-orientalis-via-modulating-nrf2-ampk-glut4-signaling-pathway
#9
Prachurjya Dutta, Tapan Dey, Anjum Dihingia, Prasenjit Manna, Jatin Kalita
Brachytrupes orientalis (Gryllidae) is a common edible insect species eaten by the different tribes of North East India. This study investigated the potentiality of Brachytrupes orientalis extracts in different solvent hydro-alcoholic (AEBO), hexane (HEBO) and ethyl acetate (EEBO) on glucose utilization and cell viability in high glucose (HG) treated myotubes. It has been observed that AEBO supplementation significantly increased the glucose utilization against HG exposure; however, treatment HEBO and EEBO have no significant effect...
September 1, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28868958/selective-in-vitro-anti-melanoma-activity-of-ursolic-and-oleanolic-acids
#10
Camelia Oprean, Alexandra Ivan, Florina Bojin, Mirabela Cristea, Codruta Soica, Lavinia Drăghia, Angela Caunii, Virgil Paunescu, Calin Tatu
Products of natural origin have become important agents in the treatment of cancer, and the active principles of natural sources could be used in combination with chemotherapeutic agents to increase their effects and to minimize their toxicity. Oleanolic (OA) and ursolic (UA) acids are intensely studied for their promising anticancer potential. The aim of this study was focused on the in vitro toxicological effects induced by UA and OA human mesenchymal stem cells and on melanoma, one of the most frequent cancers whose incidence is increasing every year...
September 3, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28859105/programmed-cell-death-in-acanthamoeba-castellanii-neff-induced-by-several-molecules-present-in-olive-leaf-extracts
#11
Ines Sifaoui, Atteneri López-Arencibia, Carmen Mª Martín-Navarro, María Reyes-Batlle, Carolina Wagner, Olfa Chiboub, Mondher Mejri, Basilio Valladares, Manef Abderrabba, José E Piñero, Jacob Lorenzo-Morales
Therapy against Acanthamoeba infections such as Granulomatous Amoebic Encephalitis (GAE) and Acanthamoeba Keratitis (AK), remains as an issue to be solved due to the existence of a cyst stage which is highly resistant to most chemical and physical agents. Recently, the activity of Olive Leaf Extracts (OLE) was demonstrated against Acanthamoeba species. However, the molecules involved in this activity were not identified and/or evaluated. Therefore, the aim of this study was to evaluate the activity of the main molecules which are present in OLE and secondly to study their mechanism of action in Acanthamoeba...
2017: PloS One
https://www.readbyqxmd.com/read/28854432/ursolic-acid-improves-liver-transplantation-and-inhibits-apoptosis-in-miniature-pigs-using-donation-after-cardiac-death
#12
Wei Zhou, Li Lin, Ying Cheng, Yongfeng Liu
BACKGROUND: Ursolic acid (UA) possesses extensive pharmacological activities, including anti-oxidation, anti-infection, anti-inflammation, anti-tumor, liver protection. This study was designed to investigate the effect of UA on liver transplantation after liver transplantation using donation after cardiac death (DCD), and to assess the mechanisms. METHODS: 24 healthy experimental pigs were randomly divided into control and experimental groups. Each group received six DCD liver transplantations...
August 31, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28852850/antimicrobial-mechanism-of-oleanolic-and-ursolic-acids-on-streptococcus-mutans-ua159
#13
Soon-Nang Park, Yun Kyong Lim, Mi-Hwa Choi, Eugene Cho, Iel Soo Bang, Jung Min Kim, Sug-Joon Ahn, Joong-Ki Kook
Triterpenoid saponin derivatives oleanolic acid (OA) and ursolic acid (UA), but not betulinic acid (BA), were previously found to have strong antimicrobial activity against Streptococcus mutans. OA and UA inhibited the transcription of genes related to peptidoglycan biosynthesis, thereby preventing bacterial growth. However, it is not clear whether this is the only pathway involved in the antimicrobial activity of these compounds against S. mutans. Therefore, we used quantitative real-time PCR (qPCR) and microarray analyses to examine the expression of genes related to essential metabolic pathways in S...
August 29, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28841784/regulation-of-microrna-using-promising-dietary-phytochemicals-possible-preventive-and-treatment-option-of-malignant-mesothelioma
#14
REVIEW
Md Abu Sayeed, Massimo Bracci, Guendalina Lucarini, Raffaella Lazzarini, Roberto Di Primio, Lory Santarelli
Malignant mesothelioma (MM) is a very aggressive, lethal cancer, and its incidence is increasing worldwide. Development of multi-drug resistance, therapy related side-effects, and disease recurrence after therapy are the major problems for the successful treatment of MM. Emerging evidence indicates that dietary phytochemicals can exert anti-cancer activities by regulating microRNA expression. Until now, only one dietary phytochemical (ursolic acid) has been reported to have MM microRNA regulatory ability. A large number of dietary phytochemicals still remain to be tested...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28839362/effects-of-plantago-major-extracts-and-its-chemical-compounds-on-proliferation-of-cancer-cells-and-cytokines-production-of-lipopolysaccharide-activated-thp-1-macrophages
#15
Kartini, Suratsawadee Piyaviriyakul, Suchitra Thongpraditchote, Pongpun Siripong, Omboon Vallisuta
BACKGROUND: Plantago major has been reported to have anticancer and anti-inflammatory properties. However, its antiproliferative and anti-inflammatory mechanisms have not been fully elucidated. Moreover, which plant parts are more suitable as starting materials has not been explored. OBJECTIVES: To investigate the antiproliferative activity of P. major extracts against MCF-7, MDA-MB-231, HeLaS3, A549, and KB cancer cell lines as well as their effects on inflammatory cytokines (tumor necrosis factor [TNF]-α, interleukin [IL]-1β, IL-6, and interferon [IFN]-γ) production by lipopolysaccharide (LPS)-stimulated THP-1 macrophages...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28813102/terpene-esters-from-natural-products-synthesis-and-evaluation-of-cytotoxic-activity
#16
Mauricio M Victor, Jorge M David, Maria C K Sakukuma, Letícia V Costa-Lotufo, Andrea F Moura, Ana J Araújo
Natural steroids and triterpenes such as b-sitosterol, stigmasterol, lupeol, ursolic and betulinic acids were transformed into its hexanoic and oleic esters, to evaluate the influence of chemical modification towards the cytotoxic activities against tumor cells. The derivatives were evaluated against five tumor cell lines [OVCAR-8 (ovarian carcinoma); SF-295 (glioblastoma); HCT-116 (colon adenocarcinoma); HL-60 (leukemia); and PC-3 (prostate carcinoma)] and the results showed only betulinic acid hexyl ester exhibits cytotoxic potential activity...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28807773/influence-of-oxidative-stress-on-the-antibacterial-activity-of-betulin-betulinic-acid-and-ursolic-acid
#17
H O B Oloyede, H O Ajiboye, M O Salawu, T O Ajiboye
Contribution of reactive oxygen species and oxidative stress in the antibacterial activities of betulin, betulinic acid and ursolic acid against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus was investigated. The minimum inhibitory concentrations of betulin, betulinic acid and ursolic acid against E. coli, P. aeruginosa and S. aureus are 1024-, 256- and 1024-μg/mL; 512-, 256- and 256 μg/mL; 256-, 256- and 64 μg/mL respectively. Cell viability of betulin-, betulinic acid- and ursolic acid-treated bacteria decrease in time dependent manner...
August 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28802239/synergistic-antinociceptive-interaction-of-syzygium-aromaticum-or-rosmarinus-officinalis-coadministered-with-ketorolac-in-rats
#18
Karla Lyzet Beltrán-Villalobos, Myrna Déciga-Campos, Hidemi Aguilar-Mariscal, María Eva González-Trujano, María Fernanda Martínez-Salazar, María de Los Ángeles Ramírez-Cisneros, María Yolanda Rios, Francisco Javier López-Muñoz
Syzygium aromaticum (L.) Merr. & L.M. Perry (Mirtaceae) and Rosmarinus officinalis L. (Lamiaceae) are both medicinal plants used for centuries to alleviate pain. The aim of the study was to demonstrate the therapeutic potential utility of herb-drug association of S. aromaticum essential oil or R. officinalis ethanolic extract coadministered with ketorolac. Antinociceptive pharmacological interaction was investigated by an isbolographic study using the formalin test in rats. Both alone and in combination with ketorolac; S...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28801966/ursolic-acid-a-natural-nutraceutical-agent-targets-caspase3-and-alleviates-inflammation-associated-downstream-signal-transduction
#19
Xiaoyao Ma, Yuan Zhang, Zengyong Wang, Yunbing Shen, Man Zhang, Quandeng Nie, Yuanyuan Hou, Gang Bai
SCOPE: Ursolic acid (UA) is a pentacyclicterpenoid carboxylic acid that is present in a wide variety of plant foods. There are many beneficial health effects that are attributed to the properties of UA. However, the specific cellular targets of UA and the mechanism underlying downstream signal transduction processes linked to the anti-inflammation pathway have not been thoroughly elucidated to date. METHODS AND RESULTS: Chemical biology strategies such as target fishing, click reaction synthesis of a UA probe and molecular imaging were used to identify potential target proteins of UA...
August 11, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28791824/anti-enterococcal-activities-of-pentacyclic-triterpenes
#20
Dorota Wojnicz, Dorota Tichaczek-Goska, Kamila Korzekwa, Marta Kicia, Andrzej Hendrich
BACKGROUND: Asiatic (AA) and ursolic (UA) acids are widely studied phytochemicals, but their antimicrobial properties are still poorly understood. Therefore our research has focused on their activity against uropathogenic Enterococcus faecalis strains. OBJECTIVES: The aim of this research was to determine the influence of AA and UA on the growth, cell morphology, virulence factors and biofilm formation by E. faecalis strains. MATERIAL AND METHODS: AA and UA were purchased from Sigma-Aldrich...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
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