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https://www.readbyqxmd.com/read/29036235/-medicaments-and-oral-healthcare-5-adverse-effects-of-medications-and-over-the-counter-drugs-on-teeth
#1
C de Baat, P G M A Zweers, C van Loveren, A Vissink
Intrinsic tooth discoloration may occur as an adverse effect of fluoride and tetracyclines. Extrinsic tooth discoloration may occur as superficial staining or as discoloration of the superficial pellicle and/or biofilm due to chlorhexidine, liquid iron salts, essential oils, some antibiotics and stannous fluoride. Inhibition of orthodontic tooth movement has been reported due to the use of prostaglandin synthetase inhibitors. If medications or over-the-counter drugs induce hyposalivation or contain much sucrose, caries may develop...
October 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/29034738/chemodiversity-of-nepeta-menthoides-boiss-bohse-essential-oil-from-iran-and-antimicrobial-acetylcholinesterase-inhibitory-and-cytotoxic-properties-of-1-8-cineole-chemotype
#2
Niloofar Kahkeshani, Abbas Hadjiakhoondi, Latifeh Navidpour, Tahmineh Akbarzadeh, Malihe Safavi, Elahe Karimpour-Razkenari, Mahnaz Khanavi
The essential oil of Nepeta menthoides Boiss. & Bohse., from Iran, was analysed by GC/MS. Two types of multivariate analyses were done based on the chemical composition of the investigated sample in this study and 12 other samples reported in the literature to show the chemodiversity in essential oil composition. Antimicrobial, acetylcholinesterase inhibitory and cytotoxic activities of the essential oil and its major component were assessed. Twenty-one compounds were identified, representing 96.81% of the total oil and the major constituent was 1,8-cineole (70...
October 15, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29031968/pyrolysis-gas-chromatography-isotope-ratio-mass-spectrometry-for-monitoring-natural-additives-in-polylactic-acid-active-food-packages
#3
M Llana-Ruíz-Cabello, S Pichardo, N T Jiménez-Morillo, F J González-Vila, E Guillamón, J M Bermúdez, S Aucejo, A M Camean, J A González-Pérez
Compound-specific isotope analysis (CSIA) usually requires preparative steps (pretreatments, extraction, derivatization) to get amenable chromatographic analytes from bulk geological, biological or synthetic materials. Analytical pyrolysis (Py-GC/MS) can help to overcome such sample manipulation. This communication describe the results obtained by hyphenating analytical pyrolysis (Py-GC) with carbon isotope-ratio mass spectrometry (IRMS) for the analysis of a polylactic acid (PLA) a based bio-plastic extruded with variable quantities of a natural plant extract or oregano essential oil...
October 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29031196/anti-edematogenic-and-anti-inflammatory-activity-of-the-essential-oil-from-croton-rhamnifolioides-leaves-and-its-major-constituent-1-8-cineole-eucalyptol
#4
Anita Oliveira Brito Pereira Bezerra Martins, Lindaiane Bezerra Rodrigues, Francisco Rafael Alves Santana Cesário, Maria Rayane Correia de Oliveira, Cicera Datiane Morais Tintino, Fyama Ferreira E Castro, Isabel Sousa Alcântara, Maria Neyze Martins Fernandes, Thaís Rodrigues de Albuquerque, Maria Sanadia Alexandre da Silva, Adriano Antunes de Sousa Araújo, Lucindo José Quintans Júniur, José Galberto Martins da Costa, Irwin Rose Alencar de Menezes, Almir Gonçalves Wanderley
The species Croton rhamnifolioides, belonging to the Croton genus, is known in ethnomedicine as "quebra faca" and is used in the treatment of stomach pain, vomiting and fever. This study aims to evaluate the anti-edematogenic and anti-inflammatory effect of Croton rhamnifolioides leaf essential oil (OEFC) and its major constituent: 1,8-cineole (eucalyptol). The essential oil was extracted from fresh leaves through a hydrodistillation system. The chemical analysis was determined by gas chromatography-mass spectrometry (GC-MS)...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29030881/effects-of-dietary-greek-oregano-origanum-vulgare-ssp-hirtum-supplementation-on-rumen-fermentation-enzyme-profile-and-microbial-communities-in-goats
#5
N Paraskevakis
This study was conducted to examine in vivo long-term effects of dietary dried oregano (Origanum vulgare ssp. hirtum) whole plant on rumen fermentation, enzyme profile and microbial communities. For this purpose, eight healthy, adult, non-lactating Alpine goats were kept in tie stalls equipped for individual feeding and randomly divided into two homogeneous groups: one fed 0.6 kg of a concentrate mixture and 0.6 kg of wheat straw without any supplementation and served as control group (CON) while the other group (OR) fed the same diet of CON but supplemented with 20 g of dried oregano plants (OPs) to provide daily dosage of 1 ml of essential oil (EO) per animal...
October 14, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29030875/protection-of-grain-products-from-sitophilus-oryzae-l-contamination-by-anti-insect-pest-repellent-sachet-containing-allyl-mercaptan-microcapsule
#6
Yoonjee Chang, Soo-Hyun Lee, Ja Hyun Na, Pahn-Shick Chang, Jaejoon Han
The purpose of this study was to develop an anti-insect pest repellent sachet to prevent Sitophilus oryzae (L.) (Coleoptera: Curculionidae) contamination in grain packaging. The anti-insect pest activities of essential oils (EOs) from garlic (Allium Sativum), ginger (Zingiber Officinalis), black pepper (Piper nigrum), onion (Allium cepa), and fennel (Foeniculum vulgare) as well as major compounds (allyl disulfide, AD; allyl mercaptan, AM) isolated from of garlic and onion (AD and AM) were measured against S...
October 14, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29030319/coordination-of-different-complexes-to-copper-ii-and-cobalt-iii-metal-centers-enhances-zika-virus-and-dengue-virus-loads-in-both-arthropod-cells-and-human-keratinocytes
#7
Shovan Dutta, Michael J Celestine, Supreet Khanal, Alexis Huddleston, Colin Simms, Jessa Faye Arca, Amlan Mitra, Loree Heller, Piotr J Kraj, Michel Ledizet, John F Anderson, Girish Neelakanta, Alvin A Holder, Hameeda Sultana
Trace elements such as copper and cobalt have been associated with virus-host interactions. However, studies to show the effect of conjugation of copper(II) or cobalt(III) metal centers to thiosemicarbazone ligand(s) derived from either food additives or mosquito repellent such as 2-acetylethiazole or citral, respectively, on Zika virus (ZIKV) or dengue virus (serotype 2; DENV2) infections have not been explored. In this study, we show that four compounds comprising of thiosemicarbazone ligand derived from 2-acetylethiazole viz...
October 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29030039/effect-of-acidic-and-enzymatic-pretreatment-on-the-analysis-of-mountain-tea-sideritis-spp-volatiles-via-distillation-and-ultrasound-assisted-extraction
#8
Virginia D Dimaki, Gregoris Iatrou, Fotini N Lamari
A number of beneficial medicinal properties are attributed to the extract and essential oil of the aerial parts of Sideritis species (Lamiaceae). Hydrodistillation of the aerial parts of wild Sideritis clandestina ssp. peloponnesiaca (an endemic taxon in northern Peloponnesus, Greece) gave a low essential oil yield (<0.12%); about 65 components, mainly α-pinene, β-caryophyllene, β-pinene, globulol, caryophyllene oxide, were identified via GC-MS. Internal and external standards were used for quantification...
October 6, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29030035/quali-quantitative-characterization-of-the-volatile-constituents-in-cordia-verbenacea-d-c-essential-oil-exploiting-advanced-chromatographic-approaches-and-nuclear-magnetic-resonance-analysis
#9
Danilo Sciarrone, Daniele Giuffrida, Archimede Rotondo, Giuseppe Micalizzi, Mariosimone Zoccali, Sebastiano Pantò, Paola Donato, Rosana Goncalves Rodrigues-das-Dores, Luigi Mondello
Cordia verbenacea D.C. (Boraginaceae, Varronia curassavica Jacq. synonym) is a medicinal plant, native from Brazil, especially the leaves are used in folk medicine. The aim of this study was to extend the characterization of the volatile fraction of the essential oil obtained from this plant, by using GC-FID, GC-MS, and chiral GC. Moreover, to further clarify the composition of the volatile fraction, preparative multidimensional-GC (prep-MDGC) was used to collect unknown compounds, followed by NMR characterization...
October 6, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29030032/a-modified-approach-for-isolation-of-essential-oil-from-fruit-of-amorpha-fruticosa-linn-using-microwave-assisted-hydrodistillation-concatenated-liquid-liquid-extraction
#10
Fengli Chen, Jia Jia, Qiang Zhang, Huiyan Gu, Lei Yang
In this work, a modified technique was developed to separate essential oil from the fruit of Amorpha fruticosa using microwave-assisted hydrodistillation concatenated liquid-liquid extraction (MHD-LLE). The new apparatus consists of two series-wound separation columns for separating essential oil, one is the conventional oil-water separation column, and the other is the extraction column of components from hydrosol using an organic solvent. Therefore, the apparatus can simultaneously collect the essential oil separated on the top of hydrosol and the components extracted from hydrosol using an organic solvent...
October 7, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29029248/efficacy-of-nanoencapsulated-thymus-eriocalyx-and-thymus-kotschyanus-essential-oils-by-a-mesoporous-material-mcm-41-against-tetranychus-urticae-acari-tetranychidae
#11
Asgar Ebadollahi, Jalal Jalali Sendi, Alireza Aliakbar
Inspite of well-established potentiality of plant essential oils as biopesticides, their environmentally low persistence is considered as a hindering obstacle for its commercialization. In the present study, chemical composition and toxicity of essential oils isolated from leaves of Thymus eriocalyx and Thymus kotschyanus were evaluated against two-spotted spider mite, Tetranychus urticae. The chemicals present in the crude oil were found to be thymol (28.83%), oleic acid (11.51%), palmitic acid (8.60%), borneol (5...
September 27, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29029183/evaluation-of-the-constituents-of-vetiver-oil-against-anopheles-minimus-diptera-culicidae-a-malaria-vector-in-thailand
#12
Rungarun Tisgratog, Chutipong Sukkanon, John P Grieco, Unchalee Sanguanpong, Kamlesh R Chauhan, Joel R Coats, Theeraphap Chareonviriyaphap
The development of resistance by mosquitoes to current synthetic compounds has resulted in reduced effectiveness of prevention and control methods worldwide. An alternative nonchemical based control tools are needed to be evaluated particularly plant-derived essential oils. Several components of vetiver oil have been documented as insect repellents. However, detailed knowledge of those components action against insect remains unknown. In this study, behavioral response of Anopheles minimus to four constituents of vetiver oil (valencene, terpinen-4-ol, isolongifolene, vetiverol) was evaluated by using the high-throughput screening assay system...
October 6, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29029151/combined-toxicity-of-three-essential-oils-against-aedes-aegypti-diptera-culicidae-larvae
#13
Ephantus J Muturi, Jose L Ramirez, Kenneth M Doll, Michael J Bowman
Essential oils are potential alternatives to synthetic insecticides because they have low mammalian toxicity, degrade rapidly in the environment, and possess complex mixtures of bioactive constituents with multi-modal activity against the target insect populations. Twenty-one essential oils were initially screened for their toxicity against Aedes aegypti (L.) larvae and three out of the seven most toxic essential oils (Manuka, oregano, and clove bud essential oils) were examined for their chemical composition and combined toxicity against Ae...
October 4, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29028778/essential-oils-and-gastroparesis-power-for-transforming-health-hope-and-quality-of-life
#14
Chalyce Macoskey, Dorothy J Dunn
This study explored how essential oils for persons with gastroparesis symptoms affect the quality of life. Gastroparesis is a chronic delayed gastric motility disorder characterized by postprandial fullness, early satiety, nausea, vomiting, abdominal discomfort, bloating, depression, and anxiety. The aim of this study was to determine how essential oils support digestion and eliminate inflammation in the body as evidenced by self-reporting a decrease in symptoms, thereby improving quality of life. A qualitative descriptive methodology using Barrette's Theory of Power as Knowing Participation in Change thematic framework was used...
November 2017: Holistic Nursing Practice
https://www.readbyqxmd.com/read/29026857/repellency-effect-of-essential-oils-of-some-native-plants-and-synthetic-repellents-against-human-flea-pulex-irritans-siphonaptera-pulicidae
#15
Mohammad Bagher Ghavami, Fahimeh Poorrastgoo, Behrooz Taghiloo, Jamshid Mohammadi
BACKGROUND: Fleas are important vectors of human and animal disease, and control measures for protection against their bites and flea-borne diseases are necessary. METHODS: The essential oils (EOs) of four native medicinal plants, Ziziphora tenuiore, Myrtus communis, Achillea wilhelmsii and Mentha piperita were isolated by hydrodistillation technique and analyzed by GC-MC. The repellent activity of EOs and synthetic compounds, DEET and permethrin, were assayed on human subjects against field collected fleas...
March 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29026207/citrus-peel-essential-oil-nanoformulations-to-control-the-tomato-borer-tuta-absoluta-chemical-properties-and-biological-activity
#16
Orlando Campolo, Asma Cherif, Michele Ricupero, Gaetano Siscaro, Kaouthar Grissa-Lebdi, Agatino Russo, Lorena M Cucci, Patrizia Di Pietro, Cristina Satriano, Nicolas Desneux, Antonio Biondi, Lucia Zappalà, Vincenzo Palmeri
The repeated use of conventional synthetic pesticides in crop protection leads to resistance development by pests along with a negative impact on the environment, particularly non-target arthropods. Plant-derived active compounds, such as essential oils (EOs), play a key role in sustainably controlling pests. The lethal and sublethal activity of citrus peel EOs as emulsions and included in polyethylene glycol (PEG) nanoparticles (EO-NPs) was determined against the invasive tomato pest Tuta absoluta. Their effects on the plants were also assessed...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024085/structure-determination-conformational-flexibility-internal-dynamics-and-chiral-analysis-of-pulegone-and-its-complex-with-water
#17
Anna Krin, Cristobal Perez, Melanie Schnell, Maria Mar Quesada Moreno, Juan Jesus Lopez Gonzalez, Juan Ramon Aviles-Moreno, Pablo Pinacho, Susana Blanco, Juan Carlos Lopez
In the current work we present a detailed analysis of the chiral molecule pulegone, which is a constituent of essential oils, using broadband rotational spectroscopy. Two conformers are observed under the cold conditions of a molecular jet. We report an accurate experimentally determined structure for the lowest energy conformer. For both conformers, a characteristic splitting pattern is observed in the spectrum, resulting from the internal rotation of the two non-equivalent methyl groups situated in the isopropylidene side chain...
October 11, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29023481/phytochemical-residue-profiles-in-rice-grains-fumigated-with-essential-oils-for-the-control-of-rice-weevil
#18
S Ezhil Vendan, S Manivannan, Anila M Sunny, R Murugesan
In the present study, we investigated the fumigant potential of five edible essential oils (EOs) against Sitophilus oryzae and their phytochemical residues in treated grains. Among the tested EOs, peppermint oil proved significantly effective (P ≤ 0.05) on S.oryzae at 400 μl/L air concentration, inducing 83 and 100% mortalities in with-food and without-food conditions respectively over 72 h exposure. In addition, it was also observed that the binary mixtures of peppermint + lemon oil (1:1 ratio) produced an equivalent effect to that of peppermint oil alone treatments...
2017: PloS One
https://www.readbyqxmd.com/read/29022353/chemical-composition-and-in-vitro-antileishmanial-and-cytotoxic-activities-of-the-essential-oils-of-ocotea-dispersa-nees-mez-and-ocotea-odorifera-vell-rohwer-lauraceae
#19
Ana E T Alcoba, Daiana C de Melo, Priscila M de Andrade, Herbert J Dias, Mariana C Pagotti, Lizandra G Magalhães, Walnir G F Júnior, Antônio E M Crotti, Mayker L D Miranda
We investigate the chemical composition and the in vitro antileishmanial and cytotoxic activities of the essential oils extracted from the leaves of Ocotea dispersa (Nees) Mez (OD-EO) and Ocotea odorifera (Vell) Rohwer (OO-EO). On the basis of GC-FID and GC-MS, α-eudesmol (20.9%), valencene (10.2%), δ-elemene (9.3%) and isospathulenol (7.3%) are the major constituents of OD-EO, whereas safrole (36.3%), γ-cadinene (6.6%), camphor (6.5%) and α-copaene (6.0%) are the main constituents of OO-EO. Both OD-EO and OO-EO display significant activity against the promastigote forms of Leishmania amazonensis, with IC50 values of 4...
October 12, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29021497/comparison-of-essential-oils-from-three-kinds-of-cryptotaenia-japonica-hassk-kirimitsuba-nemitsuba-and-itomitsuba-used-in-japanese-food
#20
Yoshiharu Okuno, Shinsuke Marumoto, Mitsuo Miyazawa
The compositions of the essential oils from three kinds of Cryptotaenia japonica Hassk ("Mitsuba" in Japanese, Kirimitsuba (KM), Nemitsuba (NM), and Itomitsuba (IM)) were investigated by capillary GC/GC-MS. The oils contained 53 volatile components, of which 95% were terpenoids. The major constituents were sesquiterpenoids, which were α-selinene (KM: 39.1%; NM: 38.4%; IM: 13.2%), β-selinene (15.5%, 15.2%, 4.8%), germacrene D (12.1%, 7.2%, 24.1%), trans-farnesene (11.1%, 6.0%, 10.9%), β-elemene (2.9%, 2.9%, 6...
October 11, 2017: Journal of Oleo Science
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