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https://www.readbyqxmd.com/read/28089045/biotransformation-of-limonene-by-an-endophytic-fungus-using-synthetic-and-orange-residue-based-media
#1
Mário Cesar Jucoski Bier, Adriane Bianchi Pedroni Medeiros, Carlos Ricardo Soccol
Aroma and fragrances have high commercial value for use in food, cosmetics and perfumes. The biotransformation of terpenes by microorganisms represents an attractive alternative method for production of flavourings. Endophytic fungi offer a great potential for the production of several groups of compounds; however, few studies have evaluated the biotransformation of limonene. Following preliminary studies on the biotransformation of limonene, submerged fermentation was carried out using an endophytic fungus isolated from Pinus taeda and identified as Phomopsis sp...
February 2017: Fungal Biology
https://www.readbyqxmd.com/read/28088574/time-dependence-of-the-enhancement-effect-of-chemical-enhancers-molecular-mechanisms-of-enhancing-kinetics
#2
Xiaochang Liu, Peng Quan, Shanshan Li, Chao Liu, Yuan Zhao, Yongshan Zhao, Liang Fang
Chemical enhancers are widely used for facilitating drug penetration in transdermal drug delivery system (TDDS). However, there is a lack of knowledge about how the enhancement effect changes over time. In this study, on the basis of kinetic parameters of enhancement effect, molecular details of the dynamic enhancement process was described and a new hypothesis of the recovery mechanism of the skin barrier function was proposed. Using pretreated skin and flurbiprofen patch, the effects of Azone (AZ) and menthol decanoate (MT-10) were evaluated with in vitro permeation experiment and further confirmed by confocal laser scanning microscopy (CLSM) and TEWL...
January 11, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28079180/the-herbivore-induced-plant-volatiles-methyl-salicylate-and-menthol-positively-affect-growth-and-pathogenicity-of-entomopathogenic-fungi
#3
Yongwen Lin, Muhammad Qasim, Mubasher Hussain, Komivi Senyo Akutse, Pasco Bruce Avery, Chandra Kanta Dash, Liande Wang
Some herbivore-induced-plant volatiles (HIPVs) compounds are vital for the functioning of an ecosystem, by triggering multi-trophic interactions for natural enemies, plants and herbivores. However, the effect of these chemicals, which play a crucial role in regulating the multi-trophic interactions between plant-herbivore-entomopathogenic fungi, is still unknown. To fill this scientific gap, we therefore investigated how these chemicals influence the entomopathogenic fungi growth and efficacy. In this study, Lipaphis erysimi induced Arabidopsis thaliana HIPVs were collected using headspace system and detected with GC-MS, and then analyzed the effects of these HIPVs chemicals on Lecanicillium lecanii strain V3450...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28064202/trends-in-and-characteristics-of-marijuana-and-menthol-cigarette-use-among-current-cigarette-smokers-2005-2014
#4
Gillian L Schauer, Erica N Peters, Zachary Rosenberry, Hyoshin Kim
BACKGROUND: Given increasing co-marijuana and tobacco use in the U.S., this study aimed to explore the overlap between menthol cigarette use (MCU) and marijuana. METHODS: Data came from past month U.S. cigarette smokers 12 years and older responding to the National Survey on Drug Use and Health between 2005 and 2014 (N= 51,500). Prevalence, demographics and substance use characteristics from 2013-14 were assessed across four groups, based on past month marijuana and tobacco use: cigarette smokers with marijuana and MCU, with marijuana but no MCU, with no marijuana but MCU, and with use of neither...
January 6, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28064201/a-method-for-classifying-user-reported-electronic-cigarette-liquid-flavors
#5
Jessica M Yingst, Susan Veldheer, Erin Hammett, Shari Hrabovsky, Jonathan Foulds
BACKGROUND: Along with the growth in popularity of electronic cigarette devices (e-cigs), the variety of e-cig liquids (e-liquid) available to users has also grown. Although some studies have published data about the use of flavored e-liquid, there is no standardized way to group flavors making it difficult to interpret the data and replicate results across studies. The current study describes a method to classify user-reported e-liquid flavors and presents the resulting proportion of users in each flavor group in a large online survey of e-cig users...
January 6, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28063268/evaluation-of-the-quality-of-herbal-teas-by-dart-tof-ms
#6
Jana Prchalová, František Kovařík, Aleš Rajchl
The paper focuses on the optimization, settings and validation of direct analysis in real time (DART) coupled with time of flight detector (TOF) when used for the evaluation of the quality of selected herbal teas (fennel, chamomile, nettle, linden, peppermint, thyme, lemon balm, marigold, sage, rose hip, St. John's Wort). The ionization mode, the optimal ionization temperature and the type of solvent for sample extraction were optimized. The characteristic compounds of the analysed herbal teas (glycosides, flavonoids, phenolic and terpenic substances, such as chamazulene, anethole, menthol, thymol, salviol, hypericin etc...
January 7, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28060498/1-8-cineole-in-french-red-wines-evidence-for-a-contribution-related-to-its-various-origins
#7
Xavier Poitou, Cécile Thibon, Philippe Darriet
The aromatic descriptor "green", reflecting grape unripeness in French red wines, is frequently associated with the levels of 3-alkyl-2-methoxypyrazines, particularly 3-isobutyl-2-methoxypyrazine (IBMP), which has bell pepper nuances. Nevertheless, not all green aromatic expressions in red wines correlate with 3-alkyl-2-methoxypyrazine concentrations. This study considered sensory and chemical approaches using Cabernet Sauvignon wines obtained from grapes harvested at one-month intervals during the 2014 and 2015 vintages to investigate other volatile odoriferous compounds...
January 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28034900/the-sensory-difference-threshold-of-menthol-odor-in-flavored-tobacco-determined-by-combining-sensory-and-chemical-analysis
#8
Erna J Z Krüsemann, Johannes W J M Cremers, Wouter F Visser, Pieter H Punter, Reinskje Talhout
Cigarettes are an often-used consumer product, and flavor is an important determinant of their product appeal. Cigarettes with strong nontobacco flavors are popular among young people, and may facilitate smoking initiation. Discriminating flavors in tobacco is important for regulation purposes, for instance to set upper limits to the levels of important flavor additives. We provide a simple and fast method to determine the human odor difference threshold for flavor additives in a tobacco matrix, using a combination of chemical and sensory analysis...
December 29, 2016: Chemical Senses
https://www.readbyqxmd.com/read/28030622/effects-of-menthol-supplementation-in-feedlot-cattle-diets-on-the-fecal-prevalence-of-antimicrobial-resistant-escherichia-coli
#9
C C Aperce, R Amachawadi, C L Van Bibber-Krueger, T G Nagaraja, H M Scott, J Vinasco-Torre, J S Drouillard
The pool of antimicrobial resistance determinants in the environment and in the gut flora of cattle is a serious public health concern. In addition to being a source of human exposure, these bacteria can transfer antibiotic resistance determinants to pathogenic bacteria and endanger the future of antimicrobial therapy. The occurrence of antimicrobial resistance genes on mobile genetic elements, such as plasmids, facilitates spread of resistance. Recent work has shown in vitro anti-plasmid activity of menthol, a plant-based compound with the potential to be used as a feed additive to beneficially alter ruminal fermentation...
2016: PloS One
https://www.readbyqxmd.com/read/28017987/antifungal-efficacy-of-plant-essential-oils-against-stored-grain-fungi-of-fusarium-spp
#10
Peeyush Kumar, Sapna Mishra, Atul Kumar, Amit Kumar Sharma
The control potential of seven plant essential oils was evaluated against Fusarium proliferatum (Matsushima) Nirenberg and Fusarium verticillioides Sheldon. The fungicidal activity was assessed through microtiter plate assay to determine the minimum inhibitory and fungicidal concentration of essential oils. The essential oil of Mentha arvensis was adjudged as best for inhibiting the fungal growth, while oil of Thymus vulgaris and Anethum graveolens showed high efficacy in terms of fungicidal activity. The oil of M...
October 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28008227/transbuccal-delivery-of-betahistine-dihydrochloride-from-mucoadhesive-tablets-with-a-unidirectional-drug-flow-in-vitro-ex-vivo-and-in-vivo-evaluation
#11
Mohamed A El-Nabarawi, Adel A Ali, Heba M Aboud, Amira H Hassan, Amany H Godah
OBJECTIVE: Betahistine dihydrochloride (BH.2HCl), an anti-vertigo histamine analog used in the treatment of Ménière's disease, undergoes extensive first-pass metabolism and suffers from short biological half-life. The aim of the present work was to develop and estimate controlled release mucoadhesive buccal tablets of BH.2HCl with a unidirectional drug flow to overcome this encumbrance. METHODS: A direct compression method was adopted for preparation of the tablets using mucoadhesive polymers like guar gum, hydroxypropyl methyl cellulose K4M, sodium carboxymethyl cellulose and their combinations...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27994497/menthol-inhibiting-parasympathetic-function-of-tracheal-smooth-muscle
#12
Hsing-Won Wang, Shao-Cheng Liu, Pin-Zhir Chao, Fei-Peng Lee
Menthol is used as a constituent of food and drink, tobacco and cosmetics nowadays. This cold receptor agonist has been used as a nasal inhalation solution in the daily life. The effect of menthol on nasal mucosa in vivo is well known; however, the effect of the drug on tracheal smooth muscle has been rarely explored. Therefore, during administration of the drug for nasal symptoms, it might also affect the trachea via oral intake or inhalation. We used our preparation to test the effectiveness of menthol on isolated rat tracheal smooth muscle...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27942999/a-pilot-trial-examining-african-american-and-white-responses-to-algorithm-guided-smoking-cessation-medication-selection-in-persons-living-with-hiv
#13
Pamela Valera, F Joseph McClernon, Greer Burkholder, Michael J Mugavero, James Willig, Conall O'Cleirigh, Karen L Cropsey
Algorithm-based treatments (AT) may be an effective clinical tool to aid HIV clinicians in prescribing pharmacotherapy to increase smoking cessation among people living with HIV (PLWH). Initial results from AT indicated significant increases in abstinence self-efficacy and medication utilization and declines in cigarettes smoked per day across time. Given historical racial disparities, it is unclear if both African Americans and White smokers would benefit equally from this type of intervention. Thus, the aim of this study was to examine racial differences in response to AT guided smoking cessation for African American and White smokers living with HIV...
December 9, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/27936526/diclofenac-systemic-bioavailability-of-a-topical-1-diclofenac-3-menthol-combination-gel-vs-an-oral-diclofenac-tablet-in-healthy-volunteers-a%C3%A2-randomized-open-label-crossover-study%C3%A2
#14
Sebastian Moreira, D Jeffery Liu
OBJECTIVE: Evaluate systemic exposure with repeated topical application of a fixed-combination topical gel product containing 1% diclofenac sodium and 3% menthol in either of 2 formulation packages relative to oral administration. METHODS: In this phase 1, single-center, 4-way crossover study, healthy volunteers aged 18 - 50 years underwent consecutive 3-day treatment regimens in a randomly assigned sequence with each of 4 treatment groups: 4 g of topical 1% diclofenac + 3% menthol gel administered via an aluminum tube or roll-on device applied 4 times daily; 4 g of topical 1% diclofenac sodium gel (Voltaren Gel) applied 4 times daily; and oral diclofenac sodium tablets 50 mg 3 times daily...
December 12, 2016: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27925100/strategies-for-thirst-relief-integrative-literature-review
#15
Aline Korki Arrabal Garcia, Lígia Fahl Fonseca, Patricia Aroni, Cristina Maria Galvão
Objective: to analyze the strategies used to relieve the thirst of hospitalized patients. Method: an integrative review, for which the databases PubMed, LILACS, CINAHL and the group of references organized by the Group for Study and Research of Thirst were selected for the search of primary studies, with the keywords: thirst, ice, cold, intervention, nursing care, artificial saliva. Results: the review sample was composed of ten primary studies...
November 2016: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/27924817/in-vitro-human-epidermal-permeation-of-nicotine-from-electronic-cigarette-refill-liquids-and-implications-for-dermal-exposure-assessment
#16
H Frederick Frasch, Ana M Barbero
Nicotine plus flavorings in a propylene glycol (PG) vehicle are the components of electronic cigarette liquids (e-liquids), which are vaporized and inhaled by the user. Dermal exposure to nicotine and e-liquids may occur among workers in mixing and filling of e-cigarettes in the manufacturing process. Inadvertent skin contact among consumers is also a concern. In vitro nicotine permeation studies using heat-separated human epidermis were performed with surrogate and two commercial e-liquids, neat and aqueous nicotine donor formulations...
December 7, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/27904078/effect-of-nerolidol-and-or-levulinic-acid-on-the-thermotropic-behavior-of-lipid-lamellar-structures-in-the-stratum-corneum
#17
Shunichi Utsumi, Tomohiro Nakamura, Yasuko Obata, Noboru Ohta, Kozo Takayama
Permeation enhancers are required to deliver drugs through the skin efficiently and maintain effective blood concentrations. Studies of the barrier function of the stratum corneum using l-menthol, a monocyclic monoterpene widely used in medicines and foods, have revealed an interaction between characteristic intercellular lipid structures in the stratum corneum and permeation enhancers. The variety of permeation enhancers that can be used to contribute to transdermal delivery systems beyond l-menthol is increasing...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27899298/mechanisms-and-time-course-of-menthol-induced-cutaneous-vasodilation
#18
Daniel H Craighead, Nathaniel B McCartney, James H Tumlinson, Lacy M Alexander
Menthol is a vasoactive compound that is widely used in topical analgesic agents. Menthol induces cutaneous vasodilation, however the underlying mechanisms are unknown. Determining the rates of appearance and clearance of menthol in the skin is important for optimizing topical treatment formulation and dosing. The purpose of this study was to determine the mechanisms contributing to menthol-mediated cutaneous vasodilation and to establish a time course for menthol appearance/clearance in the skin. Ten young (23±1years, 5 males 5 females) subjects participated in two protocols...
November 27, 2016: Microvascular Research
https://www.readbyqxmd.com/read/27891154/preparation-of-ecofriendly-formulations-containing-biologically-active-monoterpenes-with-their-fumigant-and-residual-toxicities-against-adults-of-culex-pipiens
#19
Mohamed E I Badawy, Nehad E M Taktak, Osama M Awad, Souraya A Elfiki, Nadia E Abou El-Ela
Different mixtures of monoterpenes (ketone, alcohol, and alkene) were loaded on paper discs and wax and their knockdown activities were evaluated against Culex pipiens adults. Some individual monoterpenes were also evaluated by residual toxicity technique. Citronella oil as a reference was also loaded separately or in combination with monoterpenes on paper discs and wax. The ketone monoterpenes mixture (camphor, menthone, carvone, and fenchone) on paper discs was the most active (KT50 = 17.20 min) followed by ketone monoterpenes with citronella oil (KT50 = 20...
2016: Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27887033/skin-irritation-and-sensitization-potential-of-fixed-dose-combination-of-diclofenac-1-and-menthol-3-topical-gel-results-of-two-phase-i-patch-studies
#20
D Jeffery Liu, A Collaku, J S Dosik
Phase I, randomized, controlled patch studies were conducted to evaluate skin sensitization and irritation potential of a new gel formulation containing 1% diclofenac and 3% menthol as a fixed-combination product.In study A, healthy volunteers were exposed to 4 test patches containing 1% diclofenac+3% menthol, diclofenac, menthol, or placebo gels during an induction (nine 48 to 72-h applications) and challenge phase (one 48-h application). Some subjects were re-challenged to evaluate suspected sensitization...
November 25, 2016: Drug Research
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