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https://www.readbyqxmd.com/read/28930264/essential-oil-from-piper-aduncum-chemical-analysis-antimicrobial-assessment-and-literature-review
#1
Lianet Monzote, Ramón Scull, Paul Cos, William N Setzer
Background: The challenge in antimicrobial chemotherapy is to find safe and selective agents with potency that will not be compromised by previously developed resistance. Terrestrial plants could provide new leads to antibacterial, antifungal, or antiprotozoal activity. Methods: The essential oil (EO) of Piper aduncum L. (Piperaceae) from Cuba was analyzed by gas chromatography-mass spectrometry (GC-MS). A cluster analysis of P. aduncum EO compositions reported in the literature was carried out. The EO was screened against a panel of microorganisms (bacteria, fungi, parasitic protozoa) as well as for cytotoxicity against human cells...
July 2, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930251/chemical-profiling-and-evaluation-of-antioxidant-and-anti-microbial-properties-of-selected-commercial-essential-oils-a-comparative-study
#2
Ângelo Luís, Ana Paula Duarte, Luísa Pereira, Fernanda Domingues
Background: The last decades have seen an increased awareness by the scientific community of the extent of resistance to conventional antibiotics, particularly with respect to the emerging multidrug-resistant pathogenic microbes. Additionally, natural antioxidants have received significant attention among food professionals and consumers because of their assumed safety and potential therapeutic value. The aim of this work was to assess the antioxidant activities of eight selected commercial essential oils (EOs), together with the evaluation of their antibacterial and anti-quorum sensing properties...
June 5, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930236/antibacterial-and-antifungal-activity-of-essential-oils-against-pathogens-responsible-for-otitis-externa-in-dogs-and-cats
#3
Valentina V Ebani, Simona Nardoni, Fabrizio Bertelloni, Basma Najar, Luisa Pistelli, Francesca Mancianti
Background: Essential oils (EOs) are recommended by some veterinarians to treat otitis externa in pets, but data about their efficacy in scientific literature are very scant. Methods: Nine commercial EOs, from roman chamomile (Anthemis nobilis L.), star anise (Illicium verum), lavender (Lavandula hybrida), litsea (Litsea cubeba (Lour.) Pers.), basil (Ocimum basilicum L.), oregano (Origanum vulgare L. subsp. hirticum), rosemary (Rosmarinus officinalis L.), clary sage (Salvia sclarea L.), and thyme (Thymus vulgaris L...
April 21, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930217/influence-of-different-isolation-methods-on-chemical-composition-and-bioactivities-of-the-fruit-peel-oil-of-citrus-medica-l-var-sarcodactylis-noot-swingle
#4
Gang Deng, Jonathan D Craft, Kelly Marie Steinberg, Pei Lei Li, Suraj Kumar Pokharel, William N Setzer
Background: The chemical composition and bioactivities of essential oils (EOs) of fingered citron (Citrus medica L. var. sarcodactylis (Noot.) Swingle) are considerably sensitive and lapsible during high-temperature processing of traditional separating techniques. In the present research, vacuum distillation and ultrafiltration were utilized in order to process the concentrated juice from fingered citron, obtaining a high-quality essential oil. Methods: In order to compare the essential oils obtained by conventional means, the chemical compositions of the essential oils were analyzed using GC-MS, before antimicrobial and antioxidant screening assays were carried out...
January 4, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930168/a-review-of-the-composition-of-the-essential-oils-and-biological-activities-of-angelica-species
#5
REVIEW
Kandasamy Sowndhararajan, Ponnuvel Deepa, Minju Kim, Se Jin Park, Songmun Kim
A number of Angelica species have been used in traditional systems of medicine to treat many ailments. Especially, essential oils (EOs) from the Angelica species have been used for the treatment of various health problems, including malaria, gynecological diseases, fever, anemia, and arthritis. EOs are complex mixtures of low molecular weight compounds, especially terpenoids and their oxygenated compounds. These components deliver specific fragrance and biological properties to essential oils. In this review, we summarized the chemical composition and biological activities of EOs from different species of Angelica...
September 20, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28930137/chemical-composition-cytotoxic-apoptotic-and-antioxidant-activities-of-main-commercial-essential-oils-in-palestine-a-comparative-study
#6
Mohammad A Al-Tamimi, Bob Rastall, Ibrahim M Abu-Reidah
Background: Essential oils (EOs) are complex mixtures of several components gifted with a wide array of biological activities. The present research was designed to evaluate whether commercial essential oils could be effective by examining their in vitro antioxidant, cytotoxic, and apoptotic properties of nine commercially available EOs in Palestine, namely, African rue, basil, chamomile, fennel, fenugreek, ginger, spearmint, sage, and thyme, and to assure their effective use. Methods: The cytotoxic activity was determined using HT29-19(A) non-muco secreting and HT29-muco secreting (MS) cell lines...
October 25, 2016: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28928528/alginate-edible-films-containing-microencapsulated-lemongrass-oil-or-citral-effect-of-encapsulating-agent-and-storage-time-on-physical-and-antimicrobial-properties
#7
Jessica K Alarcón-Moyano, Rubén O Bustos, María Lidia Herrera, Silvia B Matiacevich
Active edible films have been proposed as an alternative to extend shelf life of fresh foods. Most essential oils have antimicrobial properties; however, storage conditions could reduce their activity. To avoid this effect the essential oil (EO) can be microencapsulated prior to film casting. The aim of this study was to determine the effects of the type of encapsulating agent (EA), type of EO and storage time on physical properties and antimicrobial activity of alginate-based films against Escherichia coli ATCC 25922...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28927018/the-effect-of-harvesting-on-the-composition-of-essential-oils-from-five-varieties-of-ocimum-basilicum-l-cultivated-in-the-island-of-kefalonia-greece
#8
Gerasimia Tsasi, Theofilos Mailis, Artemis Daskalaki, Eleni Sakadani, Panagis Razis, Yiannis Samaras, Helen Skaltsa
Five varieties of Ocimum basilicum L. namely lettuce, cinnamon, minimum, latifolia, and violetto were separately cultivated in field and greenhouse in the island Kefalonia (Greece). The effect of successive harvesting to the essential oil content was evaluated. In total 23 samples of essential oils (EOs) were analyzed by GC-FID and GC-MS. Ninety-six constituents, which accounted for almost 99% of the oils, were identified. Cluster analysis was performed for all of the varieties in greenhouse and field conditions, in order to investigate the possible differentiation on the chemical composition of the essential oils, obtained between harvests during growing period...
September 18, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28919787/computational-tool-for-optimizing-the-essential-oils-utilization-in-inhibiting-the-bacterial-growth
#9
Noha E El-Attar, Wael A Awad
Day after day, the importance of relying on nature in many fields such as food, medical, pharmaceutical industries, and others is increasing. Essential oils (EOs) are considered as one of the most significant natural products for use as antimicrobials, antioxidants, antitumorals, and anti-inflammatories. Optimizing the usage of EOs is a big challenge faced by the scientific researchers because of the complexity of chemical composition of every EO, in addition to the difficulties to determine the best in inhibiting the bacterial activity...
2017: Advances and Applications in Bioinformatics and Chemistry: AABC
https://www.readbyqxmd.com/read/28915339/a-vapor-phase-assay-for-evaluating-the-antimicrobial-activities-of-essential-oils-against-bovine-respiratory-bacterial-pathogens
#10
S Amat, D Baines, T W Alexander
The objectives of this study were to develop a new assay for the evaluation of the antimicrobial activities of essential oils (EOs) in vapor-phase and to demonstrate the antimicrobial activities of commercial EOs against BRPs. To achieve the first objective, a microtube cap containing 100 μl of EO was embedded in an agar plate. An agar plug (diameter 13 mm) inoculated with a bacterial suspension containing10(8) CFU ml(-1) was then placed over the cap and incubated at 37 °C for 24 h. Subsequently, bacteria were recovered from the agar plug by immersion in 5 ml of broth for 10 min, followed by vortexing for 30 s, and the broths were then plated for enumeration...
September 15, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28911683/antibacterial-activity-and-interactions-of-plant-essential-oil-combinations-against-gram-positive-and-gram-negative-bacteria
#11
Cristina Anamaria Semeniuc, Carmen Rodica Pop, Ancuţa Mihaela Rotar
The aim of this study was to compare the antibacterial effects of several essential oils (EOs) alone and in combination against different Gram-positive and Gram-negative bacteria associated with food products. Parsley, lovage, basil, and thyme EOs, as well as their mixtures (1:1, v/v), were tested against Bacillus cereus, Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Salmonella typhimurium. The inhibitory effects ranged from strong (thyme EO against E. coli) to no inhibition (parsley EO against P...
April 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28893488/-clinical-criteria-for-pathogen-bacteria-in-term-newborn-suspected-of-neonatal-sepsis
#12
A Glusko-Charlet, C Fontaine, M Raucy, L Barcat, A Lahana, R Erbani, G Poirie, G Kongolo, M Diouf, A Leke, J Gondry, P Tourneux
BACKGROUND: Neonatal early onset sepsis (EOS) remains an important etiology of neonatal morbidity and mortality. Diagnosis is difficult due to a lack of sensitivity and specificity markers. In France, the management of newborn infants suspected of infection includes the analysis of gastric suction. The objective of the study was to identify early clinical signs in newborn infants with suspected neonatal sepsis to differentiate a likely infection with pathogen bacteria in the gastric suction culture (Streptococcus agalactiae or Escherichia coli) from a possible infection without such pathogen bacteria...
September 8, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28893487/-the-advantages-of-3d-imagery-in-diagnosing-and-supervising-children-s-and-teenagers-scoliosis
#13
L Mainard-Simard, L Lan, D Fort
Scoliosis is an abnormal curvature of the spine. One or several curves of more than 10 degrees in the frontal plane can be seen with the rotation of vertebrae in the axial plane, which modifies sagittal curves. In addition to esthetic harm, the morbidity of a scoliosis depends on the extent of the deformation. Treatment, whether it be orthopedic or surgical, is aggressive and never completely cures the condition. At best the deformation will be stabilized at the end of growth. Therefore, it is essential to detect any slight curve and quickly identify any potential progressive form in order to treat it...
September 8, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28893105/essential-oil-composition-of-aerial-parts-of-micromeria-persica-boiss-from-western-of-shiraz-iran
#14
Efat Jafari, Gholamabbas Ghanbarian, Atefeh Bahmanzadegan
Micromeria persica Boiss. is medicinal and aromatic plant, belonging to the Lamiaceae family. The chemical composition of the essential oils (EOs) from aerial parts of M. persica were extracted using hydro-distillation method and analysed using GC and GC-MS. Fifty-two compounds were identified in the EOs of aerial parts of M. persica. The main chemical compositions were n-hexadecanoic acid (14.9%), thymol (9.5%), linoleic acid (8.0%), carvacrol (5.6%), (E)-nerolidol (5.5%), linolenic acid (5.5%), α-cadinol (2...
September 11, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28882351/psychological-profile-of-children-who-require-repetitive-surgical-procedures-for-early-onset-scoliosis-is-a-poorer-quality-of-life-the-cost-of-a-straighter-spine
#15
Cihan Aslan, Z Deniz Olgun, Erkan Sabri Ertas, Seniz Ozusta, Gokhan Demirkiran, Fatih Unal, Muharrem Yazici
STUDY DESIGN: Cross-sectional study. OBJECTIVE: Assess the psychosocial status of children with early-onset scoliosis (EOS) undergoing multiple procedures and evaluate associations with other variables. SUMMARY OF BACKGROUND DATA: EOS may require repetitive surgical procedures to control deformity and preserve growth. These procedures impact patients' psychosocial status because of the repetitive surgeries. METHODS: EOS patients 6-18 years, undergoing traditional growing rod treatment with more than 5 surgical procedures, and neurologically/mentally intact were included...
September 2017: Spine Deformity
https://www.readbyqxmd.com/read/28872473/capsaicin-8-patch-repeat-treatment-in-nondiabetic-peripheral-neuropathic-pain-a-52-week-open-label-single-arm-safety-study
#16
Rafael Gálvez, Marie-Louise Navez, Graeme Moyle, Christian Maihöfner, Malcolm Stoker, Etienne Ernault, Turo J Nurmikko, Nadine Attal
OBJECTIVES: To investigate the long-term safety and tolerability of capsaicin 8% patch repeat treatment in nondiabetic patients with peripheral neuropathic pain. METHODS: A prospective, open-label, observational study in patients with postherpetic neuralgia, posttraumatic or postsurgical nerve injury, HIV-associated distal sensory polyneuropathy, or other peripheral neuropathic pain, and average daily pain score ≥4, who received ≤6 capsaicin 8% patch treatments over 52 weeks according to clinical need (retreatment at 9 to 12 wk intervals)...
October 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28870342/chemical-analysis-and-in%C3%A2-vitro-antimicrobial-effects-and-mechanism-of-action-of-trachyspermum-copticum-essential-oil-against-escherichia-coli
#17
Wei Huang, Jian-Qing Wang, Hai-Yan Song, Qian Zhang, Guang-Fa Liu
OBJECTIVE: To find a natural plant essential oil (EO) with excellent antimicrobial effects on food-borne bacteria and to explore the mechanism of its antimicrobial function against Escherichia coli (E. coli). METHODS: The antimicrobial activity of seven EOs against Gram-negative E. coli ATCC 8739 and Gram-positive Staphylococcus aureus ATCC 6538 was investigated using agar disk diffusion method, and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of each EO was determined using the broth dilution method...
July 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28870001/an-efficient-new-method-for-the-synthesis-of-3-18-f-fluoro-4-aminopyridine-via-yamada-curtius-rearrangement
#18
Falguni Basuli, Xiang Zhang, Pedro Brugarolas, Daniel S Reich, Rolf E Swenson
4-aminopyridine (4-AP) is a clinically approved drug to improve motor symptoms in multiple sclerosis. A fluorine-18 labeled derivative of this drug, 3-[(18) F]fluoro-4-aminopyridine, is currently under investigation for PET imaging demyelination. Herein, the Yamada-Curtius reaction has been successfully applied for the preparation of this PET radioligand with a better radiochemical yield and improved specific activity. The overall radiochemical yield was 5-15% (n = 12, uncorrected) with a specific activity of 37-148 GBq/μmol (end of synthesis, EOS) in a 90 min synthesis time...
September 4, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28867805/cytotoxic-activity-of-origanum-vulgare-l-on-hepatocellular-carcinoma-cell-line-hepg2-and-evaluation-of-its-biological-activity
#19
Hazem S Elshafie, Maria F Armentano, Monica Carmosino, Sabino A Bufo, Vincenzo De Feo, Ippolito Camele
The potential of plant essential oils (EOs) in anticancer treatment has recently received many research efforts to overcome the development of multidrug resistance and their negative side effects. The aims of the current research are to study (i) the cytotoxic effect of the crude EO extracted from Origanum vulgare subsp hirtum and its main constituents (carvacrol, thymol, citral and limonene) on hepatocarcinoma HepG2 and healthy human renal cells HEK293; (ii) the antibacterial and phytotoxic activities of the above EO and its main constituents...
August 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28867773/analysis-of-differences-in-phenology-extracted-from-the-enhanced-vegetation-index-and-the-leaf-area-index
#20
Cong Wang, Jing Li, Qinhuo Liu, Bo Zhong, Shanlong Wu, Chuanfu Xia
Remote-sensing phenology detection can compensate for deficiencies in field observations and has the advantage of capturing the continuous expression of phenology on a large scale. However, there is some variability in the results of remote-sensing phenology detection derived from different vegetation parameters in satellite time-series data. Since the enhanced vegetation index (EVI) and the leaf area index (LAI) are the most widely used vegetation parameters for remote-sensing phenology extraction, this paper aims to assess the differences in phenological information extracted from EVI and LAI time series and to explore whether either index performs well for all vegetation types on a large scale...
August 30, 2017: Sensors
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