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https://www.readbyqxmd.com/read/28634477/metabolomic-analysis-and-mode-of-action-of-metabolites-of-tea-tree-oil-involved-in-the-suppression-of-botrytis-cinerea
#1
Jiayu Xu, Xingfeng Shao, Yonghua Li, Yingying Wei, Feng Xu, Hongfei Wang
Tea tree oil (TTO), a volatile essential oil, has been widely used as an antimicrobial agent. However, the mechanism underlying TTO antifungal activity is not fully understood. In this study, a comprehensive metabolomics survey was undertaken to identify changes in metabolite production in Botrytis cinerea cells treated with TTO. Significant differences in 91 metabolites were observed, including 8 upregulated and 83 downregulated metabolites in TTO-treated cells. The results indicate that TTO inhibits primary metabolic pathways through the suppression of the tricarboxylic acid (TCA) cycle and fatty acid metabolism...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28614106/positive-patch-test-reactions-to-essential-oils-in-consecutive-patients-results-from-north-america-and-central-europe
#2
Erin M Warshaw, Kathryn A Zug, Donald V Belsito, Joseph F Fowler, Joel G DeKoven, Denis Sasseville, Howard I Maibach, C G Toby Mathias, Vincent A DeLeo, James S Taylor, Anthony F Fransway, James G Marks, Melanie D Pratt, Matthew J Zirwas, Johannes Geier, Wolfgang Uter
BACKGROUND: Synthetic fragrances and natural essential oils (EOs) are used in perfumery and found in various cosmetics. Essential oils are also increasingly used to promote wellness. In previous studies, the sensitization potential of some EOs has been identified; however, the current prevalence of sensitivity is largely unknown. OBJECTIVES: The aim of this study was to determine frequency of positive patch-test reactions to EOs tested in the baseline series, along with 3 fragrance markers (FMs) (fragrance mix I, fragrance mix II, and Myroxylon pereirae), in consecutive patients in the US/Canadian North American Contact Dermatitis Group (NACDG) (2009-2014) and the central European, trinational Information Network of Departments of Dermatology (IVDK) (2010-2014)...
June 13, 2017: Dermatitis
https://www.readbyqxmd.com/read/28609410/effects-of-aroma-gargling-cold-water-gargling-and-wet-gauze-application-on-thirst-halitosis-and-sore-throat-of-patients-after-spine-surgery
#3
Kyung Eun Oh, Ae Ran Song, Sohyune R Sok
This study compared and examined the effects of aroma gargling, cold water gargling, and wet gauze application on thirst, halitosis, and sore throat in patients after spine surgery. A quasiexperimental pretest/posttest control group design was employed. Samples were total 70 patients (aroma gargling: 24 samples, cold gargling: 24 samples, and wet gauze: 22 samples) after spine surgery in K Hospital in Seoul, Korea. The aroma gargle solution as an experimental intervention was prepared by blending peppermint, tea tree, and lemon oils at a ratio of 1:2:2...
July 2017: Holistic Nursing Practice
https://www.readbyqxmd.com/read/28551268/tea-tree-oil-exhibits-antifungal-activity-against-botrytis-cinerea-by-affecting-mitochondria
#4
Yonghua Li, Xingfeng Shao, Jiayu Xu, Yingying Wei, Feng Xu, Hongfei Wang
In order to investigate the effects of tea tree oil (TTO) on mitochondrial morphology and function in Botrytis cinerea, mycelia were treated with TTO at different concentrations. TTO at 2ml/l severely damaged mitochondria, resulting in matrix loss and increased mitochondrial irregularity. Mitochondrial membrane permeability was increased by TTO, as evidenced by a decrease in intracellular adenosine triphosphate (ATP) content and an increase in extracellular ATP content. Increasing concentrations of TTO decreased the activities of enzymes related to mitochondrial function and the tricarboxylic acid (TCA) cycle, affecting malic dehydrogenase, succinate dehydrogenase, ATPase, citrate synthetase, isocitrate dehydrogenase and α-ketoglutarate dehydrogenase, while sharply increasing the level of reactive oxygen species (ROS)...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28546125/molecular-cloning-and-functional-characterization-of-coft1-a-homolog-of-flowering-locus-t-ft-from-camellia-oleifera
#5
Hengjiu Lei, Shuchai Su, Luyi Ma, Yue Wen, Xiangnan Wang
FLOWERING LOCUS T (FT) is an important integrator of flowering genetic pathways and plays crucial roles in flowering transition. The tea-oil tree (Camellia oleifera Abel.) is a valuable woody oil crop, but the molecular mechanisms controlling flowering are still unclear. In this study, a FT-like gene, CoFT1, was isolated and characterized from C. oleifera. The CoFT1 protein was localized in the nucleus and cytoplasm of Arabidopsis protoplasts, and exhibited no transactivation activity in yeast cells. CoFT1 was highly expressed in mature leaves and reproductive organs, such as flower buds, flowers, flower organs, and young fruits...
May 22, 2017: Gene
https://www.readbyqxmd.com/read/28546114/melaleuca-alternifolia-essential-oil-prevents-alterations-to-purinergic-enzymes-and-ameliorates-the-innate-immune-response-in-silver-catfish-infected-with-aeromonas-hydrophila
#6
Matheus D Baldissera, Carine F Souza, Pedro H Doleski, Agueda C de Vargas, Marta M M F Duarte, Thiago Duarte, Aline A Boligon, Daniela B R Leal, Bernardo Baldisserotto
Aeromonas hydrophila infection represents a major impediment to the development of aquaculture, leading to important economic losses. Over the last few years, different methods have been used to counteract and minimize the negative effects of this infection, such as the use of Melaleuca alternifolia essential oil, popularly known as tea tree oil (TTO), that possess a bactericide action against A. hydrophila. The purinergic system develops an important role in the inflammatory response, principally due to involvement of adenosine triphosphate (ATP) in the inflammatory process, as well as by the anti-inflammatory properties of adenosine (Ado), a molecule that is controlled by NTPDase, 5'-nucleotidase and adenosine deaminase (ADA) enzymes...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28513067/interventions-for-cutaneous-molluscum-contagiosum
#7
REVIEW
Johannes C van der Wouden, Renske van der Sande, Emma J Kruithof, Annet Sollie, Lisette Wa van Suijlekom-Smit, Sander Koning
BACKGROUND: Molluscum contagiosum is a common skin infection that is caused by a pox virus and occurs mainly in children. The infection usually resolves within months in people without immune deficiency, but treatment may be preferred for social and cosmetic reasons or to avoid spreading the infection. A clear evidence base supporting the various treatments is lacking.This is an update of a Cochrane Review first published in 2006, and updated previously in 2009. OBJECTIVES: To assess the effects of specific treatments and management strategies, including waiting for natural resolution, for cutaneous, non-genital molluscum contagiosum in people without immune deficiency...
May 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28512603/bactericidal-activity-of-herbal-volatile-oil-extracts-against-multidrug-resistant-acinetobacter-baumannii
#8
Amornrat Intorasoot, Piyaorn Chornchoem, Siriwoot Sookkhee, Sorasak Intorasoot
AIM: The aim of the study is to investigate the antibacterial activity of 10 volatile oils extracted from medicinal plants, including galangal (Alpinia galanga Linn.), ginger (Zingiber officinale), plai (Zingiber cassumunar Roxb.), lime (Citrus aurantifolia), kaffir lime (Citrus hystrix DC.), sweet basil (Ocimum basilicum Linn.), tree basil (Ocimum gratissimum), lemongrass (Cymbopogon citratus DC.), clove (Syzygium aromaticum), and cinnamon (Cinnamomum verum) against four standard strains of Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, and 30 clinical isolates of multidrug-resistant A...
April 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28464710/salvaging-cochlear-implant-after-wound-infection-well-worth-a-try
#9
Shalabh Sharma, Anandita Gupta, Khyati Bhatia, Asish Kumar Lahiri, Satinder Singh
BACKGROUND: Cochlear implant (CI)-related wound infections are known to happen even years after the implant procedure and present a challenging clinical situation. Due to the formation of biofilm on the implant surface such infections are difficult to eradicate. Invariably explantation of the device is required for wound healing. METHOD: A 10-year-old patient presented with recurrent CI-related wound infection 8 years after implantation. The implant was salvaged with wound debridement and treating it with tea tree oil which is known for its biofilm eradicating properties...
May 3, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28209019/efficacy-of-specific-plant-products-on-microorganisms-causing-dental-caries
#10
M Rajini Kanth, A Ravi Prakash, G Sreenath, Vikram Simha Reddy, S Huldah
INTRODUCTION: Dental caries and periodontal diseases are the most common oral diseases seen globally, both in developed and developing countries. Oral microorganisms that is gram positive and gram negative bacteria are known to be involved in causation of these diseases. Nowadays commercially available dentrifices and mouth rinses are known to contain ingredients that can alter the oral microbial flora and have undesirable side effects such as vomiting, diarrhoea, disarrangement of oral, intestinal flora and tooth staining...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28177805/effects-and-possible-mechanism-of-tea-tree-oil-against-botrytis-cinerea-and-penicillium-expansum-in-vitro-and-in-vivo-test
#11
Yonghua Li, Xingfeng Shao, Jiayu Xu, Yingying Wei, Feng Xu, Hongfei Wang
The purpose of this study was to investigate the antifungal activities and possible mechanisms of tea tree oil (TTO) against Botrytis cinerea and Penicillium expansum in vitro and in vivo. The results show that TTO exhibits dose-dependent antifungal activity against both pathogens, but P. expansum is less sensitive than B. cinerea to TTO not only in the in vitro test but also in artificially inoculated cherry fruits. TTO vapor treatment reduced the decay caused by these pathogens in inoculated cherry fruits, but the effect on P...
March 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28128086/vesicular-contact-reaction-may-progress-into-erythema-multiforme
#12
Magdalena Czarnecka-Operacz, Dorota Jenerowicz, Joanna Szulczyńska-Gabor, Ewa Teresiak-Mikołajczak, Joanna Szyfter-Harris, Monika Bowszyc-Dmochowska
Dear Editor, Erythema multiforme is considered an acute skin condition, characterized by a self-limiting and sometimes recurrent course. It is regarded as a type IV hypersensitivity reaction associated with certain infections, medications, and other various triggers. Allergic contact dermatitis is in turn a delayed type of induced allergy as a result of cutaneous contact with a specific allergen to which the patient develops specific sensitivity. This type of cutaneous reaction is associated with inflammation manifesting with erythema, edema, and vesicles...
December 2016: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28124137/evaluation-of-the-effectiveness-of-tea-tree-oil-in-treatment-of-acanthamoeba-infection
#13
Edward Hadaś, Monika Derda, Marcin Cholewiński
Eye diseases caused by amoebae from the genus Acanthamoeba are usually chronic and severe, and their treatment is prolonged and not very effective. The difficulties associated with therapy have led to attempts at finding alternative treatment methods. Particularly popular is searching for cures among drugs made of plants. However, no substances with total efficacy in treating Acanthamoeba keratitis have been identified.Results of our semi in vivo studies of tea tree oil simulating eyeball infection demonstrated 100% effectiveness in the case of both trophozoites and cysts of amoebae from the genus Acanthamoeba...
March 2017: Parasitology Research
https://www.readbyqxmd.com/read/28120012/erratum-to-the-dynamics-and-mechanism-of-the-antimicrobial-activity-of-tea-tree-oil-against-bacteria-and-fungi
#14
Wen-Ru Li, Hai-Ling Li, Qing-Shan Shi, Ting-Li Sun, Xiao-Bao Xie, Bin Song, Xiao-Mo Huang
No abstract text is available yet for this article.
January 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28078415/gc-ms-method-validation-and-levels-of-methyl-eugenol-in-a-diverse-range-of-tea-tree-melaleuca-alternifolia-oils
#15
Carolyn A Raymond, Noel W Davies, Tony Larkman
Tea tree oil distilled from Melaleuca alternifolia has widespread use in the cosmetic industry as an antimicrobial as well as for other functions in topical products. Concerns were first raised by the European Commission's Scientific Committee on Consumer Products in 2004 about the level of the potentially carcinogenic phenylpropanoid compound methyl eugenol in tea tree oil. Limits on oil content in different types of cosmetic products were set based on a reported upper level of 0.9% methyl eugenol in the oil...
March 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28013459/molecular-and-structural-changes-induced-by-essential-oil-treatments-in-vicia-faba-roots-detected-by-ftir-and-ftnir-spectroscopy
#16
Mauro Mecozzi, Elena Sturchio, Priscilla Boccia, Miriam Zanellato, Claudia Meconi, Francesco Peleggi
Essential oils have recognized antimicrobial and antifungal properties which allow their utilization in agriculture like an alternative to pesticides, but their utilization requires the knowledge of all the potential structural changes and damages produced by the interaction with the vegetal organisms. In this paper, we investigated the effects of two essential oils, the tea tree oil (TTO) and the mixture of clove and rosemary oils (C + R), on the molecular structure of Vicia faba roots by Fourier transform infrared (FTIR) and Fourier near infrared transform (FTNIR) spectroscopy...
December 24, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27979118/encapsulation-of-tea-tree-oil-by-amorphous-beta-cyclodextrin-powder
#17
Meena Shrestha, Thao M Ho, Bhesh R Bhandari
An innovative method to encapsulate tea tree oil (TTO) by direct complexation with solid amorphous beta-cyclodextrin (β-CD) was investigated. A β-CD to TTO ratio of 90.5:9.5 (104.9mg TTO/g β-CD) was used in all complexation methods. The encapsulation was performed by direct mixing, and direct mixing was followed by the addition of water (13-17% moisture content, MC) or absolute ethanol (1:1, 1:2, 1:3 and 1:4 TTO:ethanol). The direct mixing method complexed the lowest amount of TTO (60.77mg TTO/g β-CD). Powder recrystallized using 17% MC included 99...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27876081/in-vitro-activity-of-ten-essential-oils-against-sarcoptes-scabiei
#18
Fang Fang, Kerdalidec Candy, Elise Melloul, Charlotte Bernigaud, Ling Chai, Céline Darmon, Rémy Durand, Françoise Botterel, Olivier Chosidow, Arezki Izri, Weiyi Huang, Jacques Guillot
BACKGROUND: The development of alternative approaches in ectoparasite management is currently required. Essential oils have been demonstrated to exhibit fumigant and topical toxicity to a number of arthropods. The aim of the present study was to assess the potential efficacy of ten essential oils against Sarcoptes scabiei. METHODS: The major chemical components of the oils were identified by GC-MS analysis. Contact and fumigation bioassays were performed on Sarcoptes mites collected from experimentally infected pigs...
November 22, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27790572/antimicrobial-efficacy-of-various-essential-oils-at-varying-concentrations-against-periopathogen-porphyromonas-gingivalis
#19
Veenu Madaan Hans, Harpreet Singh Grover, Himanshu Deswal, Preeti Agarwal
INTRODUCTION: Porphyromonas gingivalis (P.gingivalis) is a notorious perio-pathogen with the ability to evade host defense mechanism and invade into the periodontal tissues. Many antimicrobial agents have been tested that curb its growth, although these agents tend to produce side effects such as antibiotic resistance and opportunistic infections. Therefore search for naturally occurring anti-microbials with lesser side effects is the need of the hour. AIM: The aim of this study was to substantiate the antimicrobial activity of various essential oils; eucalyptus oil, chamomile oil, tea tree oil and turmeric oil against P...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27774425/a-case-series-of-the-effects-of-a-novel-composition-of-a-traditional-natural-preparation-for-the-treatment-of-psoriasis
#20
A Michalsen, O Eddin, A Salama
The objective of this study was to assess the effectiveness of a specific composition of a traditional herbal preparation (DurrDerma) in adult patients with moderate to severe skin psoriasis. The preparation is a newly developed topical combination containing plant-based extracts traditionally used in skin disease as black cumin, olive oil, tea tree oil, cocoa butter completed by vitamin A and vitamin B12. We documented the effectiveness of the preparation in a first case series. A total of 12 patients (8 males and 4 females, 21-86 y) with manifest and treatment-resistant psoriasis were included and treated for 12 weeks...
October 2016: Journal of Traditional and Complementary Medicine
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