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https://www.readbyqxmd.com/read/28526768/direct-comparison-of-the-enzymatic-characteristics-and-superoxide-production-of-the-four-aldehyde-oxidase-enzymes-present-in-mouse
#1
Gokhan Kucukgoze, Mineko Terao, Enrico Garattini, Silke Leimkuhler
Aldehyde oxidases (AOXs) are molybdoflavoenzymes with an important role in the metabolism and detoxification of heterocyclic compounds and aliphatic as well as aromatic aldehydes. The enzymes use oxygen as the terminal electron acceptor and produce reduced oxygen species during turnover. Four different enzymes, mAOX1, mAOX3, mAOX4 and mAOX2, which are the products of distinct genes, are present in the mouse. A direct and simultaneous comparison of the enzymatic properties and characteristics of the four enzymes has never been performed...
May 19, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28525761/impact-of-bioactive-packaging-systems-based-on-evoh-films-and-essential-oils-in-the-control-of-aflatoxigenic-fungi-and-aflatoxin-production-in-maize
#2
Eva M Mateo, José V Gómez, Irene Domínguez, Jose V Gimeno-Adelantado, Rufino Mateo-Castro, Rafael Gavara, Misericordia Jiménez
Aspergillus flavus and A. parasiticus are the most common fungal species associated with aflatoxin (AF) contamination of cereals, especially maize, and other agricultural commodities. AFB1, the most frequent and toxic metabolite, is a powerful hepatotoxic, teratogenic and mutagenic compound. Effective strategies to control these fungal species and AFs in food and feed are required. Active packaging film containing essential oils (EO) is one of the most innovative food packaging concepts. In this study, ethylene-vinyl alcohol (EVOH) copolymer films incorporating EO from Origanum vulgare (ORE), Cinnamomum zeylanicum (CIN) or their major active constituents, carvacrol (CAR) and cinnamaldehyde (CINHO), respectively, were developed and assayed to control growth of A...
May 11, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28521511/effects-of-adaptation-to-carvacrol-on-staphylococcus-aureus-in-the-planktonic-and-biofilm-phases
#3
Antonia Nostro, Andreana Marino, Giovanna Ginestra, Luigina Cellini, Mara Di Giulio, Giuseppe Bisignano
The effect of exposure to sub-minimum inhibitory concentrations of carvacrol, for either 3-10 days, on direct (carvacrol) or cross-protection (cinnamaldehyde, eugenol, antibiotics) and the influence on planktonic and biofilm growth of four Staphylococcus aureus strains were reported. The sequential exposure to carvacrol resulted in a direct protection that was more evident in two of the four strains after 10 days. No significant cross-protection against cinnamaldehyde, eugenol and antibiotics was detected...
May 18, 2017: Biofouling
https://www.readbyqxmd.com/read/28507116/toxic-electrophiles-induce-expression-of-the-multi-drug-efflux-pump-mexef-oprn-in-pseudomonas-aeruginosa-through-a-novel-transcriptional-regulator-cmra
#4
Paulo Juarez, Katy Jeannot, Patrick Plésiat, Catherine Llanes
The multidrug efflux system MexEF-OprN is produced at low levels in wild-type strains of Pseudomonas aeruginosa. However, mutational alteration of gene mexS results in constitutive overexpression of the pump along with an increased resistance of the bacterium to chloramphenicol, fluoroquinolones and trimethoprim. In this study, analysis of in vitro selected chloramphenicol-resistant clones of strain PA14 led to the identification of a new class of mutants (called nfxC2) exhibiting alterations in a so far uncharacterized gene, PA14_38040 (homolog of PA2047 in strain PAO1)...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28504167/antibacterial-and-antioxidative-activity-of-o-amine-functionalized-chitosan
#5
Tamer M Tamer, Mohamed A Hassan, Ahmed M Omer, Katarína Valachová, Mohamed S Mohy Eldin, Maurice N Collins, Ladislav Šoltés
Cinnamaldehyde was immobilized to O-amine functionalized chitosan via a coupling reaction. Fourier transform infrared spectroscopy confirmed N-cinnamyl substitution. Wetting analyses demonstrate more hydrophobicity in the N-cinnamyl substituted O-amine functionalized chitosan compared to chitosan or unsubstituted O-amine functionalized chitosan. Thermal gravimetric analysis and differential scanning calorimetry demonstrates that the prepared N-cinnamyl substituted O-amine functionalized chitosan exhibits higher thermostability than unmodified chitosan at temperatures in which polysaccharides are commonly stored and utilised...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28495856/flavored-e-cigarette-liquids-and-cinnamaldehyde-impair-respiratory-innate-immune-cell-function
#6
Phillip Wayne Clapp, Erica Ann Pawlak, Justin Trevor Lackey, James Edward Keating, Steven L Reeber, Gary L Glish, Ilona Jaspers
Innate immune cells of the respiratory tract are the first line of defense against pathogenic and environmental insults. Failure of these cells to perform their immune functions leaves the host susceptible to infection, and may contribute to impaired resolution of inflammation. While combustible tobacco cigarettes have been shown to suppress respiratory immune cell function, the effects of flavored electronic cigarette liquids (e-liquids) and individual flavoring agents on respiratory immune cell responses are unknown...
May 11, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28489336/antimicrobial-activity-of-natural-products-against-clostridium-difficile-in-vitro
#7
Niloufar Roshan, Thomas V Riley, Katherine A Hammer
AIMS: To investigate the antimicrobial activity of various natural products against C. difficile in vitro. METHODS AND RESULTS: The antibacterial activity of 20 natural products was determined by the agar well diffusion and broth microdilution assays against four C. difficile strains, three comparator organisms and four gastrointestinal commensal organisms. Of the raw natural products, garlic juice had the highest activity. The most active processed products were peppermint oil and the four pure compounds trans-cinnamaldehyde, allicin, menthol and zingerone...
May 10, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28487683/trans-cinnamaldehyde-carvacrol-and-eugenol-reduce-campylobacter-jejuni-colonization-factors-and-expression-of-virulence-genes-in-vitro
#8
Abhinav Upadhyay, Komala Arsi, Basanta R Wagle, Indu Upadhyaya, Sandip Shrestha, Ann M Donoghue, Dan J Donoghue
Campylobacter jejuni is a major foodborne pathogen that causes severe gastroenteritis in humans characterized by fever, diarrhea, and abdominal cramps. In the human gut, Campylobacter adheres and invades the intestinal epithelium followed by cytolethal distending toxin mediated cell death, and enteritis. Reducing the attachment and invasion of Campylobacter to intestinal epithelium and expression of its virulence factors such as motility and cytolethal distending toxin (CDT) production could potentially reduce infection in humans...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28450018/interaction-between-natural-antioxidants-derived-from-cinnamon-and-cocoa-in-binary-and-complex-mixtures
#9
Dimas Rahadian Aji Muhammad, Danar Praseptiangga, Davy Van de Walle, Koen Dewettinck
Cinnamon and cocoa are known to be valuable sources of bioactive phytochemicals, mainly the polyphenols. This paper investigates the potential antioxidant activity of cinnamon and cocoa extract and the interaction of their mixtures by various in vitro tests. Moreover, the combination effect of their constituents in a binary mixture was studied. Two representative active compounds of chocolate (epicatechin, catechin) were combined with seven of cinnamon (gallic acid, tannic acid, quercetin, sinapic acid, cinnamic acid, eugenol and cinnamaldehyde) in multilevel ratios...
September 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28449595/pharmaceutical-perspectives-of-spices-and-condiments-as-alternative-antimicrobial-remedy
#10
Savita P D'Souza, Suvarna V Chavannavar, B Kanchanashri, S B Niveditha
Medicinal values of spices and condiments are being revived by biologists through in vitro and in vivo trials providing evidence for its antimicrobial activities. The essential oils and extracts of spices like black pepper, cloves, cinnamon, and nutmeg contain active compounds like piperine, eugenol, cinnamaldehyde, and lignans. Similarly, condiments like coriander, black cumin, turmeric, garlic, and ginger are recognized for constituents like linalool, thymoquinones, curcumin, allicin, and geranial respectively...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28440548/contact-sensitizers-trigger-human-cd1-autoreactive-t-cell-responses
#11
Richard J Betts, Adrijana Perkovic, Subhashree Mahapatra, Aurélia Del Bufalo, Kaddy Camara, Amy R Howell, Silvia Martinozzi Teissier, Gennaro De Libero, Lucia Mori
Allergic contact dermatitis is a primarily T-cell-mediated inflammatory skin disease induced by exposure to small molecular-weight haptens, which covalently bind to proteins. The abundance of cutaneous T cells that recognize CD1a antigen-presenting molecules raises the possibility that MHC-independent antigen presentation may be relevant in some hapten-driven immune responses. Here we examine the ability of contact sensitizers to influence CD1-restricted immunity. Exposure of human antigen-presenting cells such as monocyte-derived dendritic cells and THP-1 cells to the prototypical contact sensitizer dinitrochlorobenzene potentiated the response of CD1a- and CD1d-autoreactive T cells, which released a vast array of cytokines in a CD1- and TCR-dependent manner...
April 25, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28435717/a-cinnamaldehyde-schiff-base-of-s-4-methyl-benz-yl-di-thio-carbazate-crystal-structure-hirshfeld-surface-analysis-and-computational-study
#12
Enis Nadia Md Yusof, Mohamed I M Tahir, Thahira B S A Ravoof, Sang Loon Tan, Edward R T Tiekink
The title di-thio-carbazate ester (I), C18H18N2S2 [systematic name: (E)-4-methyl-benzyl 2-[(E)-3-phenyl-allyl-idene]hydrazinecarbodi-thio-ate, comprises an almost planar central CN2S2 residue [r.m.s. deviation = 0.0131 Å]. The methyl-ene(tolyl-4) group forms a dihedral angle of 72.25 (4)° with the best plane through the remaining non-hydrogen atoms [r.m.s. deviation = 0.0586 Å] so the mol-ecule approximates mirror symmetry with the 4-tolyl group bis-ected by the plane. The configuration about both double bonds in the N-N=C-C=C chain is E; the chain has an all trans conformation...
April 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28435260/development-of-gold-nanoparticles-coated-with-silica-containing-the-antibiofilm-drug-cinnamaldehyde-and-their-effects-on-pathogenic-bacteria
#13
Mohankandhasamy Ramasamy, Jin-Hyung Lee, Jintae Lee
Emerging resistance to antibiotics is a mounting worldwide health concern and increases the need for nonantibiotic strategies to combat infectious diseases caused by bacterial pathogens. In this study, the authors used the antibiofilm activity of the naturally occurring antimicrobial cinnamaldehyde (CNMA) conjugated to the surface of gold nanoparticles (GNPs) to deliver CNMA efficiently and eradicate biofilms of Gram-negative organisms (enterohemorrhagic Escherichia coli O157:H7, and Pseudomonas aeruginosa), Gram positive (methicillin-sensitive Staphylococcus aureus organisms, and methicillin-resistant Staphylococcus aureus) bacteria...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28429097/immunomodulatory-and-therapeutic-role-of-cinnamomum-verum-extracts-in-collagen-induced-arthritic-balb-c-mice
#14
Mirza Muhammad Fahd Qadir, Attya Bhatti, Muhammad Usman Ashraf, Mansur Abdullah Sandhu, Sidrah Anjum, Peter John
ETHNOPHARMACOLOGICAL RELEVANCE: Cinnamomum verum (CV), also known as 'Dalchini', is the dry bark of the Cinnamomum verum (L.) plant, and has been used as a traditional Pakistani medicine to alleviate pain and inflammation in patients suffering from arthritic rheumatism. It contains alkaloids, triterpenes, Cinnamaldehyde and other volatile oils. The aim of the present study was to investigate the underlying biological effect of ethyl alcohol (EtOH) and methyl alcohol (MeOH) extracts from CV on collagen type-II induced arthritic (CIA) mice...
April 20, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28400011/use-of-enhanced-nisin-derivatives-in-combination-with-food-grade-oils-or-citric-acid-to-control-cronobacter-sakazakii-and-escherichia-coli-o157-h7
#15
Alicia Campion, Ruth Morrissey, Des Field, Paul D Cotter, Colin Hill, R Paul Ross
Cronobacter sakazakii and Escherichia coli O157:H7 are well known food-borne pathogens that can cause severe disease. The identification of new alternatives to heating to control these pathogens in foods, while reducing the impact on organoleptic properties and nutritional value, is highly desirable. In this study, nisin and its bioengineered variants, nisin V and nisin S29A, are used alone, or in combination with plant essential oils (thymol, carvacrol and trans-cinnamaldehyde) or citric acid, with a view to controlling C...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28398867/antimicrobial-efficacy-of-cinnamaldehyde-against-escherichia-coli-o157-h7-and-salmonella-enterica-in-carrot-juice-and-mixed-berry-juice-held-at-4%C3%A2-c-and-12%C3%A2-c
#16
David Manu, Aubrey F Mendonca, Aura Daraba, James S Dickson, Joseph Sebranek, Angela Shaw, Fei Wang, Shecoya White
The effectiveness of cinnamaldehyde for inactivating Salmonella enterica and Escherichia coli O157:H7 in carrot juice (CRJ) and mixed berry juice (MBJ) was investigated. Brain heart infusion broth (BHI), CRJ, and MBJ, with concentrations of added cinnamaldehyde ranging from 0.15 to 1.5 μL/mL, 0.25 to 2.0 μL/mL, and 0.25 to 1.5 μL/mL, respectively, were each inoculated with a 5-strain mixture of Salmonella enterica or Escherichia coli O157:H7 to give an initial viable count of 5.07 log10 colony-forming units/mL...
May 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28392905/cinnamaldehyde-and-eugenol-change-the-expression-folds-of-akt1-and-dkc1-genes-and-decrease-the-telomere-length-of-human-adipose-derived-stem-cells-hascs-an-experimental-and-in-silico-study
#17
Abdorrahim Absalan, Seyed Alireza Mesbah-Namin, Taki Tiraihi, Taher Taheri
OBJECTIVES: To investigate the effect of cinnamaldehyde and eugenol on the telomere-dependent senescence of stem cells. In addition, to search the probable targets of mentioned phytochemicals between human telomere interacting proteins (TIPs) using in silico studies. MATERIALS AND METHODS: Human adipose derived stem cells (hASCs) were studied under treatments with 2.5 µM/ml cinnamaldehyde, 0.1 µg/ml eugenol, 0.01% DMSO or any additive. The expression of TERT, AKT1 and DKC1 genes and the telomere length were assessed over 48-hr treatment...
March 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28384605/simultaneous-quantification-of-11-active-constituents-in-shexiang-baoxin-pill-by-ultraperformance-convergence-chromatography-combined-with-tandem-mass-spectrometry
#18
Chao Lv, Liqing Chen, Peng Fu, Niao Yang, Qun Liu, Yongwei Xu, Qinglong Sun, Rui Li, Changsen Zhan, Weidong Zhang, Runhui Liu
On account of the complexity of chemical constituents of Shexiang Baoxin Pill (SBP), a famous traditional Chinese medicine (TCM) formula, a novel and effective UPC(2)-MS/MS method was developed to simultaneously determine the content of 11 active compounds of SBP with outstanding separation ability. Eleven components in SBP, including 2 ginsenosides, 2 bile acids, 3 bufadienolides and 4 volatiles were detected by electrospray ionization tandem mass spectrometry in positive and negative ion modes with multiple reaction monitor (MRM)...
March 31, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28355745/-cinnamaldehyde-attenuates-pressure-overload-induced-cardiac-fibrosis-via-inhibition-of-endothelial-mesenchymal-transition
#19
Y Xiao, Q Q Wu, X H Jiang, Q Z Tang
Objective: The aim of this study is to investigate the underlying mechanism of cinnamaldehyde attenuating pressure overload-induced cardiac fibrosis. Methods: The mice were randomly divided into control group, model group and treatment group by random number table and each group had 8 mice.Cardiac hypertrophy was induced by aortic banding. Heart vascular density was detected by immunohistochemical staining of CD31.The expression level of stromal cells marker α-smooth muscle actin (α-SMA) was detected by immunofluorescence staining in different groups...
March 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28353001/de-novo-biosynthesis-of-trans-cinnamic-acid-derivatives-in-saccharomyces-cerevisiae
#20
Manuela Gottardi, Jan Dines Knudsen, Lydie Prado, Mislav Oreb, Paola Branduardi, Eckhard Boles
The production of natural aroma compounds is an expanding field within the branch of white biotechnology. Three aromatic compounds of interest are cinnamaldehyde, the typical cinnamon aroma that has applications in agriculture and medical sciences, as well as cinnamyl alcohol and hydrocinnamyl alcohol, which have applications in the cosmetic industry. Current production methods, which rely on extraction from plant materials or chemical synthesis, are associated with drawbacks regarding scalability, production time, and environmental impact...
March 29, 2017: Applied Microbiology and Biotechnology
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