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https://www.readbyqxmd.com/read/28229142/olive-leaf-extract-concentrated-in-hydroxytyrosol-attenuates-protein-carbonylation-and-the-formation-of-advanced-glycation-end-products-in-a-hepatic-cell-line-hepg2
#1
Marta Navarro, Francisco J Morales, Sonia Ramos
Glycation takes place both at the cellular level and at the extracellular matrix level and generates, consequently, advanced glycation end-products (AGEs) associated with chronic diseases and the aging process. Two olive leaf extracts concentrated in (i) oleuropein (OLE-A; 93.9 mg oleuropein g(-1)) and (ii) hydroxytyrosol (OLE-B; 54.5 mg hydroxytyrosol g(-1)) were evaluated according to their antiglycative and antioxidant capacity in vitro. OLE-B exerted the highest anti-AGE effect in different glycation models (IC50: 0...
February 23, 2017: Food & Function
https://www.readbyqxmd.com/read/28211527/depth-specific-fluctuations-of-gene-expression-and-protein-abundance-modulate-the-photophysiology-in-the-seagrass-posidonia-oceanica
#2
Gabriele Procaccini, Miriam Ruocco, Lázaro Marín-Guirao, Emanuela Dattolo, Christophe Brunet, Daniela D'Esposito, Chiara Lauritano, Silvia Mazzuca, Ilia Anna Serra, Letizia Bernardo, Amalia Piro, Sven Beer, Mats Björk, Martin Gullström, Pimchanok Buapet, Lina M Rasmusson, Paulo Felisberto, Sylvie Gobert, John W Runcie, João Silva, Irene Olivé, Monya M Costa, Isabel Barrote, Rui Santos
Here we present the results of a multiple organizational level analysis conceived to identify acclimative/adaptive strategies exhibited by the seagrass Posidonia oceanica to the daily fluctuations in the light environment, at contrasting depths. We assessed changes in photophysiological parameters, leaf respiration, pigments, and protein and mRNA expression levels. The results show that the diel oscillations of P. oceanica photophysiological and respiratory responses were related to transcripts and proteins expression of the genes involved in those processes and that there was a response asynchrony between shallow and deep plants probably caused by the strong differences in the light environment...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210244/assessment-of-the-antimicrobial-activity-of-olive-leaf-extract-against-foodborne-bacterial-pathogens
#3
Yanhong Liu, Lindsay C McKeever, Nasir S A Malik
Olive leaf extract (OLE) has been used traditionally as a herbal supplement since it contains polyphenolic compounds with beneficial properties ranging from increasing energy levels, lowering blood pressure, and supporting the cardiovascular and immune systems. In addition to the beneficial effects on human health, OLE also has antimicrobial properties. The aim of this work was to investigate the antimicrobial effect of OLE against major foodborne pathogens, including Listeria monocytogenes, Escherichia coli O157:H7, and Salmonella Enteritidis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28168624/antimicrobial-activity-of-endophytic-fungi-from-olive-tree-leaves
#4
Cynthia Malhadas, Ricardo Malheiro, José Alberto Pereira, Paula Guedes de Pinho, Paula Baptista
In this study, the antimicrobial potential of three fungal endophytes from leaves of Olea europaea L. was evaluated and the host plant extract effect in the antimicrobial activity was examined. The volatile compounds produced by endophytes were identified by GC/MS and further correlated with the antimicrobial activity. In potato dextrose agar, both Penicillium commune and Penicillium canescens were the most effective inhibiting Gram-positive and -negative bacteria (up to 2.7-fold compared to 30 µg/mL chloramphenicol), whereas Alternaria alternata was most effective inhibiting yeasts (up to 8...
March 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28168022/links-between-soil-microbial-communities-and-plant-traits-in-a-species-rich-grassland-under-long-term-climate-change
#5
Emma J Sayer, Anna E Oliver, Jason D Fridley, Andrew P Askew, Robert T E Mills, J Philip Grime
Climate change can influence soil microorganisms directly by altering their growth and activity but also indirectly via effects on the vegetation, which modifies the availability of resources. Direct impacts of climate change on soil microorganisms can occur rapidly, whereas indirect effects mediated by shifts in plant community composition are not immediately apparent and likely to increase over time. We used molecular fingerprinting of bacterial and fungal communities in the soil to investigate the effects of 17 years of temperature and rainfall manipulations in a species-rich grassland near Buxton, UK...
February 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28167291/elucidation-of-the-possible-mechanism-of-analgesic-actions-of-butanol-leaf-fraction-of-olax-subscorpioidea-oliv
#6
Saidi Odoma, Abdulkadir Umar Zezi, Nuhu Mohammed Danjuma, Abubakar Ahmed, Muhammed Garba Magaji
ETHNOPHARMACOLOGICAL RELEVANCE: Preparations of Olax subscorpioidea have been used traditionally for the management of pains, inflammatory diseases, yellow fever, cancer and rheumatism. Previously, the analgesic activity of its leaf extract have been reported. Furthermore, an analgesic assay guided fractionation showed that the butanol soluble fraction is the most active. However, the mechanism of this activity remains to be elucidated. This present study investigated the possible pharmacological mechanisms involved in the analgesic activity of the butanol leaf fraction of Olax subscorpioidea (BFOS) using the acetic acid induced writhing test in mice...
February 3, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28137214/phytochemical-constituents-ches-and-urease-inhibition-antiproliferative-and-antioxidant-properties-of-elaeagnus-umbellata-thunb
#7
Tevfik Ozen, Semiha Yenigun, Muhammed Altun, Ibrahim Demirtas
Due to the common ethnopharmacological used or scientifically examined biochemical properties, Elaeagnaceae family, Elaeagnus umbellata Thunb. (autumn olive) was worth investigated. In this investigation, we revealed antioxidant, antiproliferative and enzyme inhibition activities of the water, methanol, ethanol, acetone, ethyl acetate and hexane extracts of E. umbellata as well as contents of their phenolic, flavonoid, anthocyanin, ascorbic acid, lycopene and b-carotene. The antioxidant activity was screened by phosphomolybdenum assay...
January 27, 2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/28123157/olive-and-ginkgo-extracts-as-potential-cataract-therapy-with-differential-inhibitory-activity-on-aldose-reductase
#8
Diaaeldin Mohamed Abdelkawi Elimam, Ahmed Salah Uddin Ibrahim, Gregory Ing Liou, Farid Abd-Elrehim Abd-Elaziz Badria
Aldose reductase (AR) has been the leading target in the treatment of diabetic cataract. Although numerous synthetic AR inhibitors (ARI) have been identified, their adverse side effects currently preclude their use. Olive leaf extract (OLE) as well as ginkgo leaf extract (GLE) are natural supplements that have wide therapeutic indices and a plethora of salutary effects during diabetes that so far untested on sugar cataract progression. As such, the present study sought to evaluate the AR-inhibiting properties of OLE and GLE using the isolated enzyme from rabbit lens...
January 26, 2017: Drug Discoveries & Therapeutics
https://www.readbyqxmd.com/read/28100919/preventive-effect-of-eucommia-leaf-extract-on-aortic-media-hypertrophy-in-wistar-kyoto-rats-fed-a-high-fat-diet
#9
Shingo Hosoo, Masahiro Koyama, Akira Watanabe, Ryuya Ishida, Tetsuya Hirata, Yasuyo Yamaguchi, Hiroo Yamasaki, Keiji Wada, Yukihito Higashi, Kozo Nakamura
Eucommia ulmoides Oliver leaf extract (ELE) has been shown to have anti-hypertensive and anti-obesity effects in rats that are fed a high-fat diet (HFD). To explore the effects of chronic administration of ELE on body weight, blood pressure and aortic media thickness, 7-week-old male Wistar-Kyoto (WKY) rats were orally administered a normal diet, a 30% HFD, or a 5% ELE plus HFD ad libitum for 10 weeks. The HFD treatment caused mild obesity and hypertension in the normotensive rats, while rats receiving both ELE and the HFD had significantly lower body weights, less visceral and perirenal fat, lower blood pressure and thinner aortic media than the control rats receiving the HFD only...
January 19, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28067965/rp-hplc-dad-esi-qtof-ms-based-metabolic-profiling-of-the-potential-olea-europaea-by-product-wood-and-its-comparison-with-leaf-counterpart
#10
Sonda Ammar, Maria Del Mar Contreras, Boutheina Gargouri, Antonio Segura-Carretero, Mohamed Bouaziz
INTRODUCTION: Olea europaea L. organs such as leaves, stems and roots have been associated with numerous in vivo and in vitro biological activities and used for traditional medicinal purposes. However, tree wood is an untapped resource with little information about their chemical composition. OBJECTIVE: That is why, the objective of this study is to increase the knowledge about phytochemicals from 'Chemlali' olive wood by means of mass spectrometry-based analyses...
January 9, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28060487/how-does-the-amount-and-composition-of-pm-deposited-on-platanus-acerifolia-leaves-change-across-different-cities-in-europe
#11
Chiara Baldacchini, Ana Castanheiro, Nairuhi Maghakyan, Gregorio Sgrigna, Jolien Verhelst, Rocío Alonso, Jorge H Amorim, Patrick Bellan, Danijela Đunisijević Bojović, Jürgen Breuste, Oliver Bühler, Ilie C Cântar, Paloma Cariñanos, Giulia Carriero, Galina Churkina, Lucian Dinca, Raffaela Esposito, Stanisław W Gawroński, Maren Kern, Didier Le Thiec, Marco Moretti, Tine Ningal, Eleni C Rantzoudi, Iztok Sinjur, Biljana Stojanova, Mira Aničić Urošević, Violeta Velikova, Ivana Živojinović, Lilit Sahakyan, Carlo Calfapietra, Roeland Samson
Particulate matter (PM) deposited on Platanus acerifolia tree leaves has been sampled in the urban areas of 28 European cities, over 20 countries, with the aim of testing leaf deposited particles as indicator of atmospheric PM concentration and composition. Leaves have been collected close to streets characterized by heavy traffic and within urban parks. Leaf surface density, dimensions, and elemental composition of leaf deposited particles have been compared with leaf magnetic content, and discussed in connection with air quality data...
January 27, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28035149/optimization-of-a-green-extraction-method-for-the-recovery-of-polyphenols-from-olive-leaf-using-cyclodextrins-and-glycerin-as-co-solvents
#12
Ioannis Mourtzinos, Eleni Anastasopoulou, Athanasios Petrou, Spyros Grigorakis, Dimitris Makris, Costas G Biliaderis
Olive leaf, an agricultural by-product, was studied for the valorization of its biophenols using green extraction techniques; i.e. non-toxic and eco-friendly extraction solvents were used, involving water and glycerol. 2-hydroxypropyl-β-cyclodextrin (CD), was also employed as an enhancer of the extraction, since cyclodextrins (CD's) are known to improve the extractability of olive leaf polyphenols by forming water soluble inclusion complexes. The process was optimized by implementing a central composite (Box-Behnken) experimental design and response surface methodology, taking into consideration the following independent variables: glycerol concentration (Cgl), CD concentration (CCD) and temperature (T)...
November 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28011361/unexpected-effect-of-dry-olive-leaf-extract-on-the-level-of-dna-damage-in-lymphocytes-of-lead-intoxicated-workers-before-and-after-cana2edta-chelation-therapy
#13
Andrea Čabarkapa, Dragana Dekanski, Lada Živković, Mirjana Milanović-Čabarkapa, Vladan Bajić, Dijana Topalović, Francesca Giampieri, Massimiliano Gasparrini, Maurizio Battino, Biljana Spremo-Potparević
The CaNa2EDTA chelation therapy is often practiced with antioxidant supplementation. Dry olive leaf extract (DOLE) is natural product with antioxidant and DNA protective properties. The effects of DOLE on the levels of DNA damage were investigated ex vivo in peripheral blood lymphocytes (PBLs) of 19 workers occupationally exposed to lead (Pb), before and after CaNa2EDTA chelation therapy. DOLE demonstrated pronounced radical scavenging activity in concentrations ≥1 mg/mL, and showed no genotoxicity per se, in concentrations 0...
December 21, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27979083/thermal-stability-of-oils-added-with-avocado-persea-americana-cv-hass-or-olive-olea-europaea-cv-arbequina-leaf-extracts-during-the-french-potatoes-frying
#14
Paula Jiménez, Paula García, Andrés Bustamante, Andrés Barriga, Paz Robert
Effect of the addition of avocado (Persea americana cv. Hass) or olive (Olea europaea cv. Arbequina) hydroalcoholic leaf extracts (AHE and OHE, respectively) on thermal stability of canola oil (CO) and high oleic sunflower oil (HOSO) during French potatoes frying at 180°C was studied. The extracts were characterized by the total phenolic content, phenol chromatographic profiles and antioxidant activity. B-type trimer procyanidins were the major phenolic compounds identified in AHE. OHE showed higher phenol content, antioxidant activity regarding AHE...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27964727/genetic-variation-of-naturally-growing-olive-trees-in-israel-from-abandoned-groves-to-feral-and-wild
#15
Oz Barazani, Alexandra Keren-Keiserman, Erik Westberg, Nir Hanin, Arnon Dag, Giora Ben-Ari, Ori Fragman-Sapir, Yizhar Tugendhaft, Zohar Kerem, Joachim W Kadereit
BACKGROUND: Naturally growing populations of olive trees are found in the Mediterranean garrigue and maquis in Israel. Here, we used the Simple Sequence Repeat (SSR) genetic marker technique to investigate whether these represent wild var. sylvestris. Leaf samples were collected from a total of 205 trees at six sites of naturally growing olive populations in Israel. The genetic analysis included a multi-locus lineage (MLL) analysis, Rousset's genetic distances, Fst values, private alleles, other diversity values and a Structure analysis...
December 13, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27942549/topical-olive-leaf-extract-improves-healing-of-oral-mucositis-in-golden-hamsters
#16
Najmeh Showraki, Maryam Mardani, Masoumeh Emamghoreishi, Azadeh Andishe-Tadbir, Alireza Aram, Peiman Mehriar, Mahmoud Omidi, Masood Sepehrimanesh, Omid Koohi-Hosseinabadi, Nader Tanideh
STATEMENT OF THE PROBLEM: Oral mucositis (OM) is a common side effect of anti-cancer drugs and needs significant attention for its prevention. PURPOSE: This study aimed to evaluate the healing effects of olive leaf extract on 5-fluorouracil-induced OM in golden hamster. MATERIALS AND METHOD: OM was induced in 63 male golden hamsters by the combination of 5-fluorouracil injections (days 0, 5 and 10) and the abrasion of the cheek pouch (days 3 and 4)...
December 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27927065/aqueous-extract-of-securidaca-longipendunculata-oliv-and-olax-subscropioidea-inhibits-key-enzymes-acetylcholinesterase-and-butyrylcholinesterase-linked-with-alzheimer-s-disease-in-vitro
#17
Jamiu A Saliu, Ayodeji A Olabiyi
CONTEXT: Plants have historically been used to treat neurodegerative diseases which include Alzheimer's disease. OBJECTIVE: This study investigated the antioxidant properties and inhibitory effect of aqueous extracts of Securidaca longipendunculata root and Olax subscropioidea leaf on the cholinergic system in rat brain in vitro. MATERIALS AND METHODS: Aqueous extracts (1:20 w/v) of S. longipendunculata root and O. subscropioidea leaf was prepared and the ability of the extract to inhibit the activities of acetylcholinesterase and butyrylcholinesterase was evaluated as well as antioxidants as typified by 2,2-azino-bis-(3-ethylbenthiazoline-6-sulphonic acid (ABTS(•)) radical scavenging ability and Fe chelation spectophotometrically...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27918443/human-intervention-study-to-assess-the-effects-of-supplementation-with-olive-leaf-extract-on-peripheral-blood-mononuclear-cell-gene-expression
#18
Anna Boss, Chi Hsiu-Juei Kao, Pamela M Murray, Gareth Marlow, Matthew P G Barnett, Lynnette R Ferguson
Olive leaf extract (OLE) has been used for many years for its putative health benefits, but, to date, scientific evidence for the basis of these effects has been weak. Although recent literature has described a link between ailments such as cardiovascular disease, diabetes and cancer and a protective effect of polyphenols in the OLE, the mode of action is still unclear. Here, we describe a double-blinded placebo (PBO)-controlled trial, in which gene expression profiles of peripheral blood mononuclear cells from healthy male volunteers (n = 29) were analysed to identify genes that responded to OLE, following an eight-week intervention with 20 mL daily consumption of either OLE or PBO...
December 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27910900/zn-uptake-behavior-of-rice-genotypes-and-its-implication-on-grain-zn-biofortification
#19
Sarah E Johnson-Beebout, Johnvie Bayang Goloran, Francis H C Rubianes, Jack D C Jacob, Oliver B Castillo
Understanding Zn uptake dynamics is critical to rice grain Zn biofortification. Here we examined soil Zn availability and Zn uptake pathways as affected by genotype (high-grain Zn varieties IR69428 and IR68144), Zn fertilization and water management in two pot experiments. Results showed significant interactions (P < 0.05) between genotypes and Zn fertilization on DTPA (diethylenetriaminepentaacetic acid)-extractable soil Zn from early tillering to flowering. DTPA-extractable Zn in soils grown with IR69428 was positively correlated with stem (r = 0...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900540/a-novel-east-african-monopartite-begomovirus-betasatellite-complex-that-infects-vernonia-amygdalina
#20
Happyness G Mollel, Joseph Ndunguru, Peter Sseruwagi, Titus Alicai, John Colvin, Jesús Navas-Castillo, Elvira Fiallo-Olivé
The complete genomes of a monopartite begomovirus (genus Begomovirus, family Geminiviridae) and an associated betasatellite found infecting Vernonia amygdalina Delile (family Compositae) in Uganda were cloned and sequenced. Begomoviruses isolated from two samples showed the highest nucleotide sequence identity (73.1% and 73.2%) to an isolate of the monopartite begomovirus tomato leaf curl Vietnam virus, and betasatellites from the same samples exhibited the highest nucleotide sequence identity (67.1% and 68...
November 29, 2016: Archives of Virology
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