keyword
MENU ▼
Read by QxMD icon Read
search

antibacterials

keyword
https://www.readbyqxmd.com/read/28931063/plant-flavones-enhance-antimicrobial-activity-of-respiratory-epithelial-cell-secretions-against-pseudomonas-aeruginosa
#1
Benjamin M Hariri, Derek B McMahon, Bei Chen, Nithin D Adappa, James N Palmer, David W Kennedy, Robert J Lee
Flavones are a class of natural plant secondary metabolites that have anti-inflammatory and anti-bacterial effects. Some flavones also activate the T2R14 bitter taste receptor, which is expressed in motile cilia of the sinonasal epithelium and activates innate immune nitric oxide (NO) production. Flavones may thus be potential therapeutics for respiratory infections. Our objective was to examine the anti-microbial effects of flavones on the common sinonasal pathogens Candida albicans, Staphylococcus aureus, and Pseudomonas aeruginosa, evaluating both planktonic and biofilm growth...
2017: PloS One
https://www.readbyqxmd.com/read/28931061/binding-of-a-c-type-lectin-s-coiled-coil-domain-to-the-domeless-receptor-directly-activates-the-jak-stat-pathway-in-the-shrimp-immune-response-to-bacterial-infection
#2
Jie-Jie Sun, Jiang-Feng Lan, Xiao-Fan Zhao, Gerardo R Vasta, Jin-Xing Wang
C-type lectins (CTLs) are characterized by the presence of a C-type carbohydrate recognition domain (CTLD) that by recognizing microbial glycans, is responsible for their roles as pattern recognition receptors in the immune response to bacterial infection. In addition to the CTLD, however, some CTLs display additional domains that can carry out effector functions, such as the collagenous domain of the mannose-binding lectin. While in vertebrates, the mechanisms involved in these effector functions have been characterized in considerable detail, in invertebrates they remain poorly understood...
September 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28930264/essential-oil-from-piper-aduncum-chemical-analysis-antimicrobial-assessment-and-literature-review
#3
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
#4
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/28930249/anti-inflammatory-antioxidant-antibiotic-and-cytotoxic-activities-of-tanacetum-vulgare-l-essential-oil-and-its-constituents
#5
Héloïse Coté, Marie-Anne Boucher, André Pichette, Jean Legault
Background:Tanacetum vulgare L. (Asteraceae) is a perennial herb that has been used to treat multiple ailments. Regional variability of the chemical composition of T. vulgare essential oils is well-known. Despite these regional chemotypes, most relevant studies did not analyze the complete chemical composition of the T. vulgare essential oil and its constituents in relation to their biological activities. Here, we assess the anti-inflammatory, antioxidant, antibacterial, and cytotoxic activities of T. vulgare collected from northern Quebec (Saguenay-Lac-St-Jean), Canada...
May 25, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930245/antioxidant-and-antimicrobial-activities-of-the-essential-oil-of-achillea-millefolium-l-grown-in-france
#6
Chaker El-Kalamouni, Petras Rimantas Venskutonis, Bachar Zebib, Othmane Merah, Christine Raynaud, Thierry Talou
Background: This study aimed to examine the composition of essential oil (EO) of A. millefolium aerial parts wild plant grown in France and evaluate its antioxidant, antibacterial, and antifungal activities. Methods: GC-MS was used to identify the chemical composition of EO. Antioxidant activity (AA) of EO was evaluated by Oxipres method. Antimicrobial activity of EO was evaluated by Agar-well diffusion and a broth microdilution assay. Results: Forty-three volatile compounds were identified. Major compounds were camphor (12...
May 19, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930241/chemical-composition-antimicrobial-and-antioxidant-activities-of-essential-oils-from-two-avicennia-schaueriana-stapf-leechm-ex-moldenke-acanthaceae-populations
#7
Kamilla N Machado, Telma M Kaneko, Maria Cláudia M Young, Cynthia Murakami, Inês Cordeiro, Paulo Roberto H Moreno
BACKGROUND: Avicennia schaueriana Stapf & Leechm. ex Moldenke (Acanthaceae) is a native species from the Brazilian mangroves presenting ecological and economic significance. This study compared the composition and the biological activities from the essential oils obtained from two A. schaueriana populations collected at Jureia-Itatins and Ilha do Cardoso. METHODS: Essential oils were obtained by conventional means, and their compositions were analyzed by GC-MS...
May 1, 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
#8
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/28929962/-determination-of-in-vitro-susceptibilities-of-brucella-spp-strains-against-11-different-antibacterial-gents-isolated-from-blood-cultures
#9
Recep Keşli, Hüseyin Bilgin, Halim Yılmaz
Brucellosis is a worldwide zoonotic disease and still continuous to be a major public health problem. In this study, it was aimed to identify the Brucella strains to the species level isolated from blood cultures, and to determine the rate of antimicrobial susceptibility against eleven antibacterial agents. A total of 106 Brucella spp. strains were included in the study, which were isolated from blood cultures in University of Health Sciences, Konya Training and Research Hospital, Medical Microbiology Laboratory between January 2011 and June 2013...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929959/-in-vitro-effect-of-vancomycin-and-daptomycin-on-biofilm-formation-of-coagulase-negative-staphylococci-strains
#10
Duygu Nilüfer Öcal, İştar Dolapçı, Zeynep Gençtürk, Alper Tekeli
Coagulase-negative staphylococci (CNS) are one of the primer agents of blood stream infections (BSI) and catheter-related bloodstream infections (CR-BSI) which are associated mostly with the usage of central venous catheters and, important causes of morbidity and mortality despite the usage of antibacterial and supportive treatment. It is important to determine the properties of these causative microorganisms in order to make appropriate treatment of such infections. The aims of our study were to evaluate the biofilm formation of coagulase negative staphylococci (CNS) which were causative agents of bloodstream (BSI) and catheter related bloodstream infections (CR-BSI), to determine the minimum inhibitory concentration (MIC) of planktonic forms and minimal biofilm eradication concentration (MBEC) of sessile forms for vancomycin and daptomycin and to evaluate the efficacy of these antibiotics in infections with biofilm-forming isolates in vitro...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929952/cutaneous-candidiasis-in-a-gottingen-minipig-a-potential-pitfall-in-preclinical-studies
#11
Yuval Ramot, Ana Obaya, Alice McNamara, Abraham Nyska
The Göttingen minipig is often used in preclinical toxicity studies. Therefore, knowledge of spontaneously occurring pathologies is important to differentiate them from test drug-related effects. We report on a Göttingen minipig, which developed exudating widespread dermatitis during a preclinical toxicity study with a subcutaneously injected drug. The lesions were resistant to topical and oral antibacterial medications. Skin cultures were positive for Candida albicans, and treatment was changed to topical antifungal cream with quick resolution of the skin lesions...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28929673/-advances-in-studies-on-chemical-compositions-of-atractylodes-lancea-and-their-biological-activities
#12
REVIEW
Ai-Ping Deng, Ying Li, Zhi-Tao Wu, Tan Liu, Li-Ping Kang, Tie-Gui Nan, Zhi-Lai Zhan, Lan-Ping Guo
This article mainly summarises the results of the chemical compositions and its pharmacological activities of Atractylodes Radix. The chemistry components isolated from Atractylodes Radix are mainly sesquiterpenoids, enediynes, triterpenoids, aromatic glycosides, and etc. Pharmacological results showed that Atractylodes Radix has inhibition of gastric acid secretion, promoting gastrointestinal movement and gastric emptying, hpyerglycemic, antibacterial, anti-inflammatory, cardiovascular protection and nervous system activity, etc...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929236/-criteria-for-treating-mrsa-in-sputum
#13
REVIEW
J Lorenz, M Unnewehr, B Schaaf, S Gatermann
Methicillin-resistant strains of Staphylococcus aureus (MRSA) are of particular significance for the management of patients with airway infections, since the disease course is often complicated and treatment rendered difficult by multiple resistance. Their prevalence is now slowly declining, but still alarmingly high. Hospital-acquired infections are predominant, but hospital-associated and community-acquired infections do occur, as do rare infections with livestock-acquired strains. Non-nosocomial strains are characterized by different pathogenic factors and a different spectrum of antibacterial resistance; they often have a threatening disease course...
September 19, 2017: Der Internist
https://www.readbyqxmd.com/read/28928778/effectiveness-of-morinda-citrifolia-juice-as-an-intracanal-irrigant-in-deciduous-molars-an-in-vivo-study
#14
Manisha Chandwani, Rakesh Mittal, Shweta Chandak, Jitesh Pimpale
BACKGROUND: The purpose of this study was to evaluate the microbial reduction in deciduous molars using Morinda citrifolia juice (MCJ) as irrigating solution. MATERIALS AND METHODS: This was a randomized comparative study including 60 deciduous molars chosen among the patients belonging to the age group of 6-9 years based on the inclusion or exclusion criteria. The selected teeth were divided randomly into two groups based on irrigation solution used, that was, Group I (1% NaOCl) and Group II (MCJ)...
July 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28928506/perennial-legumes-as-a-source-of-ingredients-for-healthy-food-proximate-mineral-and-phytoestrogen-composition-and-antibacterial-activity
#15
Bronislava Butkutė, Audrius Padarauskas, Jurgita Cesevičienė, Alvydas Pavilonis, Lukas Taujenis, Nijolė Lemežienė
ABSTRACT: Perennial legumes have been used as edible or medicinal plants since ancient times. The focus of the current study are perennial legumes-Trifolium pratense L., T. medium L., Medicago sativa L., M. lupulina L., Onobrychis viciifolia Scop., Astragalus glycyphyllos L. and A. cicer L.-of branching stage as a potential source of value-added ingredients for healthy food. Freeze-dried samples were analysed for proximal composition, mineral, isoflavone and coumestrol contents as well as for antimicrobial activity...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28927840/chemical-composition-and-modulation-of-bacterial-drug-resistance-of-the-essential-oil-from-leaves-of-croton-grewioides
#16
Vivianne Marcelino de Medeiros, Yuri Mangueira do Nascimento, Augusto Lopes Souto, Sara Alves Lucena Madeiro, Vicente Carlos de Oliveira Costa, Suellen Maria P M Silva, Vivyanne Dos Santos Falcão Silva, Maria de Fátima Agra, José Pinto de Siqueira-Júnior, Josean Fechine Tavares
The essential oil from leaves of Croton grewioides Baill was obtained by hydrodistillation using Clevenger apparatus, and its chemical composition was analyzed by GC-MS, where 18 compounds were identified, mostly as monoterpenes (55.56%) and sesquiterpenes (44.44%), in which the major constituent was the α-pinene (47.43%). The essential oil of Croton grewioides (EOCg) and its major compound (α-pinene) were evaluated as modulators of antibiotic resistance in strain SA-1199B and IS-58 of Staphylococcus aureus that overexpresses efflux protein...
September 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28927621/in-vitro-degradation-and-possible-hydrolytic-mechanism-of-phbv-nanocomposites-by-incorporating-cellulose-nanocrystal-zno-nanohybrids
#17
Somia Yassin Hussain Abdalkarim, Hou-Yong Yu, Mei-Li Song, Ying Zhou, Juming Yao, Qing-Qing Ni
Fabrication and characterization of bbiodegradable nanocomposites based on poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) matrix reinforced with cellulose nanocrystal (CNC)-ZnO nanohybrids via simple solution casting for possible use as antibacterial biomedical materials is reported. The obtained nanocomposites exhibited an excellent antibacterial ratio of 95.2-100% for both types of bacteria namely S. aureus and E. coli and showed 9-15% degradation after one week. The addition of CNC-ZnO showed a positive effect on hydrophilicity and barrier properties...
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28927618/geraniol-grafted-chitosan-oligosaccharide-as-a-potential-antibacterial-agent
#18
Lin Yue, Jingru Li, Wanwen Chen, Xiaoli Liu, Qixing Jiang, Wenshui Xia
The novel derivatives of geraniol grafted chitosan oligosaccharide were synthesized via substitution and deprotection reaction, respectively. The products were identified by Fourier transform infrared (FT-IR), (1)H nuclear magnetic resonance (NMR), X-ray diffraction analysis (XRD), Thermogravimetric analysis (TGA) and UV-vis absorption spectroscopy. It is revealed that the derivatives exhibited a good solubility, thermal stability and antibacterial properties.
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28927292/two-new-alkylated-furan-derivatives-with-antifungal-and-antibacterial-activities-from-the-plant-endophytic-fungus-emericella-sp-xl029
#19
Xia Wu, Xue-Jiao Pang, Lu-Lin Xu, Ting Zhao, Xin-Yu Long, Qiong-Yin Zhang, Hai-Li Qin, Deng-Feng Yang, Xiao-Long Yang
Two new alkylated furan derivatives, 5-(undeca-3',5',7'-trien-1'-yl)furan-2-ol (1) and 5-(undeca-3',5',7'-trien-1'-yl)furan-2-carbonate (2), were isolated from the crude extract of the plant endophytic fungus Emericella sp. XL029 associated with the leaves of Panax notoginseng. The anti-agricultural pathogenic fungal assay indicated that compound 1 displayed significant activity against all tested fungi with minimum inhibitory concentrations (MIC) values from 25 to 3.1 μg/mL, while compound 2 displayed activity against all tested fungi except for Rhizoctonia solani and Fusarium oxysporum with MIC values from 50 to 12...
September 19, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28926976/chemical-composition-antibacterial-activity-and-synergistic-effects-with-conventional-antibiotics-and-nitric-oxide-production-inhibitory-activity-of-essential-oil-from-geophila-repens-l-i-m-johnst
#20
Huijuanzi Rao, Pengxiang Lai, Yang Gao
Geophila repens (L.) I.M. Johnst, a perennial herb, belongs to the Rubiaceae family. In this study, we identified the chemical composition of the Geophila repens essential oil (GR-EO) for the first time. Totally, seventy-seven compounds were identified according to GC and GC-MS, which represent 98.0% of the oil. And the major components of GR-EO were β-caryophyllene (23.3%), β-elemene (8.0%), farnesyl butanoate (7.4%), myrcene (3.5%), and trans-nerolidol (3.3%). Then we evaluated the antibacterial activities of GR-EO and the synergistic effects of GR-EO in combination with commercial antibiotics using the microdilution and Checkerboard method...
September 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
keyword
keyword
92605
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"