keyword
MENU ▼
Read by QxMD icon Read
search

Olive leaf extract

keyword
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
#1
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
#2
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/28035149/optimization-of-a-green-extraction-method-for-the-recovery-of-polyphenols-from-olive-leaf-using-cyclodextrins-and-glycerin-as-co-solvents
#3
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
#4
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
#5
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/27942549/topical-olive-leaf-extract-improves-healing-of-oral-mucositis-in-golden-hamsters
#6
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
#7
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
#8
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
#9
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/27882320/mediterrasian-diet-products-that-could-raise-hdl-cholesterol-a-systematic-review
#10
REVIEW
Mariangela Rondanelli, Attilio Giacosa, Paolo Morazzoni, Davide Guido, Mario Grassi, Gabriella Morandi, Chiara Bologna, Antonella Riva, Pietro Allegrini, Simone Perna
Background. High HDL-cholesterol (HDL-C) values are negatively correlated with cardiovascular diseases. This review analyses the effect of the supplementation with various Mediterranean diet products (artichoke, bergamot, and olive oil) and Asian diet products (red yeast rice) on the HDL-C value in dyslipidemic subjects. Methods. A systematic review has been done involving all the English written studies published from the 1st of January 1958 to the 31st of March 2016. Results. The results of this systematic review indicate that the dietary supplementation with red yeast rice, bergamot, artichoke, and virgin olive oil has promising effects on the increase of HDL-C serum levels...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27876915/effect-of-olive-leaf-satureja-khuzestanica-and-allium-sativum-extracts-on-giardia-lamblia-cysts-compared-with-metronidazole-in-vitro
#11
Sh Fallahi, A Rostami, B Delfan, Y Pournia, M Rashidipour
Giardia lamblia is one of the common causes of worldwide diarrhea in children. Appropriate medicinal treatment for giardiasis is available but there are some evidences of drug resistance, insufficient efficacy, and unpleasant side effects. In order to reach a more natural drug with suitable efficacy and the lowest side effects, the effects of the hydroalcoholic extracts of olive leaf, Satureja khuzestanica, and Allium sativum on G. lamblia cysts were evaluated in vitro, as well as antigiardial effect of the extracts was compared with metronidazole as the drug of choice...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27860303/effect-of-olive-leaf-extract-on-glucose-levels-in-diabetes-induced-rats-a-systematic-review-and-meta-analysis
#12
Hamzeh Abunab, Wireen L Dator, Sana Hawamdeh
BACKGROUND: The present systematic review statistically analyzed randomized controlled trials on olive leaf extract (OLE) for effectiveness in managing glucose levels in diabetic rats. METHODS: A literature search was performed using PubMed, the Cochrane Central Register of Controlled Trials, and EBSCO host databases. Selected articles, with no date restriction in the search process, were assessed independently by the authors using SYRCLE's risk of bias tool for animal studies...
November 17, 2016: Journal of Diabetes
https://www.readbyqxmd.com/read/27855900/selective-ultrasound-enhanced-enzymatic-hydrolysis-of-oleuropein-to-its-aglycon-in-olive-olea-europaea-l-leaf-extracts
#13
María Del Mar Delgado-Povedano, Feliciano Priego-Capote, María Dolores Luque de Castro
Hydrolysis of oleuropein, the main phenol in olive (Olea europaea L.) leaf extracts, to oleuropein aglycon and other subsequent products in the hydrolytic pathway can be catalyzed by different enzymes. Three of the most used hydrolases were assayed to catalyze the process, and β-glucosidase from Aspergillus niger was selected. Acceleration of the enzymatic hydrolysis by ultrasound (US) was studied using a Box-Behnken design (duty cycle, amplitude, cycle time) and an oleuropein standard, and the optimum US conditions for achieving maximum yield of oleuropein aglycon were 0...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27854305/piper-sarmentosum-effects-on-11%C3%AE-hydroxysteroid-dehydrogenase-type-1-enzyme-in-serum-and-bone-in-rat-model-of-glucocorticoid-induced-osteoporosis
#14
Siti Fadziyah Mohamad Asri, Elvy Suhana Mohd Ramli, Ima Nirwana Soelaiman, Muhamad Alfakry Mat Noh, Abdul Hamid Abdul Rashid, Farihah Suhaimi
Glucocorticoid-induced osteoporosis is one of the common causes of secondary osteoporosis. Piper sarmentosum (Ps) extract possesses antioxidant and anti-inflammatory activities. In this study, we determined the correlation between the effects of Ps leaf water extract with the regulation of 11β-hydroxysteroid dehydrogenase (HSD) type 1 enzyme activity in serum and bone of glucocorticoid-induced osteoporotic rats. Twenty-four Sprague-Dawley rats were grouped into following: G1: sham-operated group administered with intramuscular vehicle olive oil and vehicle normal saline orally; G2: adrenalectomized (adrx) control group given intramuscular dexamethasone (120 μg/kg/day) and vehicle normal saline orally; G3: adrx group given intramuscular dexamethasone (120 μg/kg/day) and water extract of Piper sarmentosum (125 mg/kg/day) orally...
November 15, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27773270/kinetic-improvement-of-olive-leaves-bioactive-compounds-extraction-by-using-power-ultrasound-in-a-wide-temperature-range
#15
Ibtihel Khemakhem, Margarita Hussam Ahmad-Qasem, Enrique Barrajón Catalán, Vicente Micol, Jose Vicente García-Pérez, Mohamed Ali Ayadi, Mohamed Bouaziz
In this study, the effect of temperature and ultrasonic application on extraction kinetics of polyphenols from dried olive leaf was investigated. Conventional (CVE) and ultrasonic-assisted extraction (UAE) were performed at 10, 20, 30, 50 and 70°C using water as solvent. Extracts were characterized by measuring the total phenolic content, the antioxidant capacity and the oleuropein content (HPLC-DAD/MS-MS). Moreover, Naik's model was used to mathematically describe the extraction kinetics. The experimental results showed that phenolic extraction was faster in UAE (ultrasonic-assisted extraction) than in CVE (conventional extraction), being extraction kinetics satisfactorily described using Naik model (include VAR>98%)...
January 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/27738877/sasa-veitchii-extract-suppresses-carbon-tetrachloride-induced-hepato-and-nephrotoxicity-in-mice
#16
Hiroki Yoshioka, Miki Tanaka, Hirohisa Fujii, Tsunemasa Nonogaki
OBJECTIVE: The aim of this study was to investigate the therapeutic effects of a Sasa veitchii leaf extract (SE) on carbon tetrachloride (CCl4)-induced hepato- and nephrotoxicity. METHODS: Seven-week-old male ddy mice were orally administered SE or saline for seven days. Twenty-four hours after the last SE or saline administration, the mice were intraperitoneally injected with 3 g/kg CCl4 or olive oil. The mice from each group were euthanized and bled for plasma analysis 24 h after the CCl4/olive oil injection...
November 2016: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/27719659/cardioprotective-effects-of-the-polyphenol-hydroxytyrosol-from-olive-oil
#17
Silvia Tejada, Samuel Pinya, Maria Del Mar Bibiloni, Josep A Tur, Antoni Pons, Antoni Sureda
The Mediterranean diet includes olive oil as its primary source of fat. This diet is frequently associated to longevity and a lower incidence of chronic diseases thanks to its biological activities and health effects. Apart from oleic acid, olive oil contains many bioactive components including polyphenols that have been reported to exert antioxidant and anti-inflammatory activities. Polyphenols may for the most part be responsible for the protective effects against cardiovascular diseases associated with olive oil...
October 5, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27664677/effect-of-hydroxytyrosol-and-olive-leaf-extract-on-1-2-dicarbonyl-compounds-hydroxymethylfurfural-and-advanced-glycation-endproducts-in-a-biscuit-model
#18
Marta Navarro, Francisco J Morales
The antiglycative activity of hydroxytyrosol (HT) and olive leaf extract (OLE) was investigated in wheat-flour biscuits. Quercetin (QE) and gallic acid (GA) were used as reference of antiglycative activity of phenolic compounds. HT, OLE, QE and GA were added in the range of 0.25-0.75% (w/w). Samples were compared against a control recipe baked at 180°C/20min. HT biscuit was able to inhibit efficiently the formation of hydroxymethylfurfural (HMF) and 3-deoxyglucosone (3-DG), as well as reduced the formation of overall free fluorescent AGEs and pentosidine...
February 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27585435/nutritional-supplements-modulate-fluorescent-protein-bound-advanced-glycation-endproducts-and-digestive-enzymes-related-to-type-2-diabetes-mellitus
#19
Emily R Koch, Permal Deo
BACKGROUND: Chronic hyperglycemia enhances the formation of advanced glycation endproducts (AGEs) and reactive oxygen species (ROS), contributing to diabetic complications. Thus, controlling blood glucose levels, inhibiting the formation of AGEs and reducing ROS are key therapeutic targets in early stage type 2 diabetes. METHODS: The inhibitory effects of seven commercial liquid nutritional supplements against carbohydrate hydrolysing enzymes, α-amylase and α-glucosidase, was determined by dinitrosalicylic (DNS) reagent and p-nitrophenyl-α-D-glucopyranoside solution, respectively...
September 1, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27567452/discrimination-of-wild-types-and-hybrids-of-duboisia-myoporoides-and-duboisia-leichhardtii-at-different-growth-stages-using-1-h-nmr-based-metabolite-profiling-and-tropane-alkaloids-targeted-hplc-ms-analysis
#20
Sophie Friederike Ullrich, Nils J H Averesch, Leonardo Castellanos, Young Hae Choi, Andreas Rothauer, Oliver Kayser
Duboisia species, which belong to the family of Solanaceae, are commercially cultivated in large scale, as they are main source of the pharmaceutically-used active compound scopolamine. In this study, (1)H NMR-based metabolite profiling linking primary with secondary metabolism and additional quantification via HPCL-MS with special focus on the tropane alkaloids were applied to compare leaf and root extracts of three wild types and two hybrids of Duboisia myoporoides and D. leichhardtii at different developmental stages grown under controlled conditions in climate chambers and under agricultural field plantation...
November 2016: Phytochemistry
keyword
keyword
105425
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"