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https://www.readbyqxmd.com/read/29051668/culture-broth-of-ganoderma-lucidum-exhibited-antioxidant-antibacterial-and-%C3%AE-amylase-inhibitory-activities
#1
Rakrudee Sarnthima, Saranyu Khammaung, Piyawan Sa-Ard
Culture broth of Ganoderma lucidum was determined for antioxidant, antibacterial and α-amylase inhibitory activities. The culture broth contained protein as determined by Bradford method equaled to 0.2 mg/ml and total phenol content as 0.078 mg GAE/mg protein (0.557 mg GAE/g extract). It exhibited radicals scavenging activities against ABTS(+·) and DPPH(·) radicals with a half maximal inhibitory concentration (IC50) less than 1.70 ± 0.02 and 2.28 ± 0.02 µg protein/ml, respectively and reducing power equaled to 4...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29046668/characterization-of-anti-bacterial-compounds-from-the-seed-coat-of-chinese-windmill-palm-tree-trachycarpus-fortunei
#2
Shakeel Ahmed, Huimin Liu, Aqeel Ahmad, Waheed Akram, Eman K N Abdelrahman, Fengming Ran, Wuling Ou, Shuang Dong, Qian Cai, Qiyun Zhang, Xiaohua Li, Sheng Hu, Xuebo Hu
The increasing of multidrug resistance in bacterial associated infections has impaired the current antimicrobial therapy and it forces the search for other alternatives. In this study, we aimed to find the in vitro antibacterial activity of seed coat of Trachycarpus fortunei against a panel of clinically important bacterial species. Ethanolic extracts of target tissues were fractionated through macro porous resin by column chromatography, using ethanol as an organic solvent with a concentration gradient of 0-100%, each along with 20% concentration increment...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29035784/concentrations-of-staphylococcus-species-in-indoor-air-as-associated-with-other-bacteria-season-relative-humidity-air-change-rate-and-s-aureus-positive-occupants
#3
Anne Mette Madsen, Saloomeh Moslehi-Jenabian, Md Zohorul Islam, Mika Frankel, Michal Spilak, Margit W Frederiksen
The aim of this study was to obtain knowledge about concentrations of Staphylococcus aureus, MRSA (methicillin-resistant S. aureus), and other Staphylococcus species in indoor air in Greater Copenhagen and about factors affecting the concentrations. The effects of season, temperature, relative humidity, air change rate (ACR), other bacterial genera, area per occupant, and presence of S. aureus-positive occupants were studied. In samples from 67 living rooms, S. hominis, S. warneri, S. epidermidis, and S. capitis were found in 13-25%; S...
October 13, 2017: Environmental Research
https://www.readbyqxmd.com/read/29026955/indolent-rib-osteomyelitis-following-breast-implant-reconstruction-an-unusual-case-and-review-of-the-literature
#4
Luke Watson, Darryl Dunn, Grant Fraser-Kirk
Rib osteomyelitis is an infrequently occurring but important complication of breast implant surgery. Although prosthetic or surgical site infection (SSI) and rib osteomyelitis as separate entities are well described in the literature, only five cases of rib or sternal osteomyelitis related to implant placement have been reported globally. Historically patients who experience this complication have not demonstrated an identifiable prevalence of the traditional risk factors associated with SSI or rib osteomyelitis...
October 12, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29024774/evaluation-of-antibacterial-potential-of-mangrove-sediment-derived-actinomycetes
#5
Suthinee Sangkanu, Vatcharin Rukachaisirikul, Chanwit Suriyachadkun, Souwalak Phongpaichit
Actinomycetes are well-known as the source of bioactive metabolites. In this work, 16 out of 118 (13.6%) isolates of mangrove sediment-derived actinomycetes showed potential antibacterial activity against at least one bacterial strain. Five extracts from isolates AMA11, AMA12 and AMA21 exhibited a broad spectrum antibacterial activity against Staphylococcus aureus ATCC25923, Staphylococcus epidermidis ATCC35984, methicillin-resistant S. aureus (MRSA) SK1, Acinetobacter baumannii NPRC004 and Escherichia coli ATCC25922...
October 9, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29023718/backscattered-electron-imaging-and-electron-backscattered-diffraction-in-the-study-of-bacterial-attachment-to-titanium-alloy-structure
#6
Anqi Wang, Ian P Jones, Gabriel Landini, Junfa Mei, Yau Y Tse, Yue X Li, Linnan Ke, Yuanli Huang, L I Liu, Chunren Wang, Rachel L Sammons
The application of secondary electron (SE) imaging, backscattered electron imaging (BSE) and electron backscattered diffraction (EBSD) was investigated in this work to study the bacterial adhesion and proliferation on a commercially pure titanium (cp Ti) and a Ti6Al4V alloy (Ti 64) with respect to substrate microstructure and chemical composition. Adherence of Gram-positive Staphylococcus epidermidis 11047 and Streptococcus sanguinis GW2, and Gram-negative Serratia sp. NCIMB 40259 and Escherichia coli 10418 was compared on cp Ti, Ti 64, pure aluminium (Al) and vanadium (V)...
October 11, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28993066/clinical-and-microbiological-profile-of-infectious-keratitis-in-an-area-of-madrid-spain
#7
Soraya Mediero, Ana Boto de Los Bueis, Karina Spiess, Mariana Díaz-Almirón, Almudena Del Hierro Zarzuelo, Isabel Villalaín Rodes, Adela García Perea
INTRODUCTION: To study antibiotic susceptibility in bacterial keratitis (BK), its profile over 10 years and its influence on ophthalmological practice. METHODS: Retrospective review of BK with positive corneal scraping over a 10-year period. Risk factors for keratitis, visual acuity (VA), empirical topical treatment, corneal infection characteristics and outcomes were analyzed for BK due to Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Pseudomonas aeruginosa and Propionibacterium acnes...
October 6, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28991607/long-term-effects-of-cataract-surgery-with%C3%A2-topical-levofloxacin-on-ocular-bacterial-flora
#8
Takashi Ono, Ryohei Nejima, Takuya Iwasaki, Yosai Mori, Yukari Noguchi, Akiko Yagi, Hideaki Hanaki, Kazunori Miyata
PURPOSE: To clarify the long-term effect of topical antibiotics on the ocular bacterial flora after cataract surgery. SETTING: Miyata Eye Hospital, Miyazaki, Japan. DESIGN: Prospective case series. METHODS: Patients who had cataract surgery between November 2014 and January 2015 were included. Levofloxacin 1.5% was administered 4 times a day by topical instillation from 3 days before surgery to 1 month postoperatively...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28989043/cerebrospinal-fluid-leak-at-percutaneous-exit-of-ventricular-catheter-as-crucial-risk-factor-for-external-ventricular-drainage-related-infection-in-adult-neurosurgical-patients
#9
Jaechan Park, Yeon-Ju Choi, Boram Ohk, Hyun-Ha Chang
OBJECTIVE: The placement of a ventricular catheter for temporary cerebrospinal fluid (CSF) diversion is associated with a considerable risk of CSF infection. The authors investigated the effect of a CSF leak on CSF-related infection and the predisposing factors for a CSF leak. METHODS: Fifty-two patients who underwent external ventricular drainage (EVD) for acute hydrocephalus associated with a subarachnoid hemorrhage (SAH) or intraventricular hemorrhage (IVH) were enrolled in this prospective study...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28987620/evaluation-of-culture-conditions-for-mixed-biofilm-formation-with-clinically-isolated-non-albicans-candida-species-and-staphylococcus-epidermidis-on-silicone
#10
Yulong Tan, Matthias Leonhard, Berit Schneider-Stickler
Silicone is frequently used in clinical and medical fields for medical devices. Mixed biofilms composed of Candida and bacterial species causes frequently failure of medical silicone devices, In this in vitro study, we analyzed mixed biofilm formation of clinically isolated non-albicans Candida species and Staphylococcus epidermidis, including Candida tropicalis, Candida krusei and Candida parapsilosis under the influence of different growth media (RPMI 1640, BHI and TSB) and several culture variables (incubation period, feeding conditions and FBS)...
October 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28982166/emergence-of-rifampin-resistant-staphylococci-after-rifaximin-administration-in-cirrhotic-patients
#11
Ji Young Chang, Seong-Eun Kim, Tae Hun Kim, So-Youn Woo, Min Sun Ryu, Yang-Hee Joo, Ko Eun Lee, Jihyun Lee, Kang Hoon Lee, Chang Mo Moon, Hye-Kyung Jung, Ki-Nam Shim, Sung-Ae Jung
OBJECTIVES: Rifaximin, a poorly absorbed antibiotics, has gut-specific therapeutic effects. Although frequently prescribed to manipulate intestinal luminal bacterial population in various diseases, the possible induction of antibacterial cross-resistance to a target pathogen is a major concern in long-term rifaximin administration. We aimed to evaluate whether rifampin-resistant staphylococci could evolve after rifaximin treatment in cirrhotic patients. METHOD: A total of 25 cirrhotic patients who were administered rifaximin for the prevention of hepatic encephalopathy were enrolled...
2017: PloS One
https://www.readbyqxmd.com/read/28980098/prevalence-of-bovine-subclinical-mastitis-and-antibiotic-susceptibility-patterns-of-major-mastitis-pathogens-isolated-in-unguja-island-of-zanzibar-tanzania
#12
T S Suleiman, E D Karimuribo, R H Mdegela
A cross-sectional study was conducted between January and July 2014 in Unguja island of Zanzibar to establish prevalence of subclinical mastitis (SCM) in smallholder dairy cows and patterns of antibacterial susceptibility of major mastitis pathogens isolated. A total of 416 dairy cows from 201 farmers were randomly selected from three districts of Unguja Island to participate in the study. Questionnaire interview, field observation, individual cow examination, California Mastitis Test (CMT) and bacteriological examination were carried out...
October 4, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28979312/synthesis-of-some-new-tetrahydropyrimidine-derivatives-as-possible-antibacterial-agents
#13
Naser Foroughifar, Somayeh Karimi Beromi, Hoda Pasdar, Masoumeh Shahi
Heterocyclic compounds containing a pyrimidine nucleus are of special interests thanks to their applications in medicinal chemistry as they are the basic skeleton of several bioactive compounds such as antifungal, antibacterial, antitumor and antitubercular. As a part of our research in the synthesis of pyrimidine derivatives containing biological activities, some new tetrahydropyrimidine derivatives (1-10) were synthesized via Biginelli reaction using HCl or DABCO as a catalyst with good yields. All structures of products were confirmed by IR, (1)H NMR and (13)C NMR spectroscopy...
2017: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/28971316/resveratrol-pterostilbene-and-baicalein-plant-derived-anti-biofilm-agents
#14
Irena Kolouchová, Olga Maťátková, Martina Paldrychová, Zdeněk Kodeš, Eva Kvasničková, Karel Sigler, Alena Čejková, Jan Šmidrkal, Kateřina Demnerová, Jan Masák
Microbial adhesion to surfaces and the subsequent biofilm formation may result in contamination in food industry and in healthcare-associated infections and may significantly affect postoperative care. Some plants produce substances with antioxidant and antimicrobial properties that are able to inhibit the growth of food-borne pathogens. The aim of our study was to evaluate antimicrobial and anti-biofilm effect of baicalein, resveratrol, and pterostilbene on Candida albicans, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Escherichia coli...
October 2, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28969677/chemical-composition-anti-biofilm-activity-and-potential-cytotoxic-effect-on-cancer-cells-of-rosmarinus-officinalis-l-essential-oil-from-tunisia
#15
Marwa Jardak, Jihene Elloumi-Mseddi, Sami Aifa, Sami Mnif
BACKGROUND: Rosmarinus officinalis L. from Tunisia, popularly known as rosemary, is of a considerable importance for its medicinal uses and aromatic value. The aim of this study was to examine the chemical composition of Rosmarinus officinalis essential oil (ROEO) and to evaluate its antibiofilm activity on biofilm-forming bacterium and its anticancer activity on cancer cell lines. METHODS: The chemical composition of Rosmarinus officinalis essential oil (ROEO) was analyzed by GC-MS and its antibacterial activity was evaluated by micro-dilution method...
October 2, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28962025/characterization-of-two-novel-variants-of-staphylococcal-cassette-chromosome-mec-elements-in-oxacillin-resistant-staphylococcus-lugdunensis
#16
Shih-Cheng Chang, Ming-Hsun Lee, Chun-Fu Yeh, Tsui-Ping Liu, Jung-Fu Lin, Cheng-Mao Ho, Jang-Jih Lu
Objectives: Staphylococcus lugdunensis , a species of CoNS, has become an important hospital pathogen because of increasing resistance to β-lactam antibiotics such as methicillin and oxacillin. Methicillin resistance is mainly due to the acquisition of the staphylococcal cassette chromosome (SCC) mec (SCC mec ). Little is known about the structure of SCC mec in methicillin- or oxacillin-resistant CoNS. Methods: WGS was performed to determine the structure of SCC mec elements of two clinical S...
August 23, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28962001/rapid-detection-of-esbl-carbapenemases-mrsa-and-other-important-resistance-phenotypes-within-6-8%C3%A2-h-by-automated-disc-diffusion-antibiotic-susceptibility-testing
#17
Michael Hombach, Marion Jetter, Peter M Keller, Nicolas Blöchliger, Natalia Kolesnik-Goldmann, Erik C Böttger
Background: In principle, automated systems allow rapid reading of disc diffusion AST (rAST) within 6-8 h. Objectives: This study analysed whether rAST can discriminate resistance phenotypes such as ESBL, carbapenemases and MRSA/methicillin-resistant Staphylococcus epidermidis from WT populations. We describe species-drug combinations that may require clinical breakpoint adaptions for early reading due to zone diameter changes during the incubation period. Methods: In total, 1852 clinical strains [ Escherichia coli ( n  =   475), Klebsiella pneumoniae ( n  =   375), Enterobacter cloacae ( n  =   301), Staphylococcus aureus ( n  =   407) and S...
August 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28961986/novel-multiresistance-cfr-plasmids-in-linezolid-resistant-methicillin-resistant-staphylococcus-epidermidis-and-vancomycin-resistant-enterococcus-faecium-vre-from-a-hospital-outbreak-co-location-of-cfr-and-optra-in-vre
#18
Alexandros Lazaris, David C Coleman, Angela M Kearns, Bruno Pichon, Peter M Kinnevey, Megan R Earls, Breida Boyle, Brian O'Connell, Gráinne I Brennan, Anna C Shore
Background: Linezolid is often the drug of last resort to treat infections caused by Gram-positive cocci. Linezolid resistance can be mutational (23S rRNA or L-protein) or, less commonly, acquired [predominantly cfr , conferring resistance to phenicols, lincosamides, oxazolidinones, pleuromutilins and streptogramin A compounds (PhLOPS A ) or optrA , encoding oxazolidinone and phenicol resistance]. Objectives: To investigate the clonality and genetic basis of linezolid resistance in 13 linezolid-resistant (LZDR) methicillin-resistant Staphylococcus epidermidis (MRSE) isolates recovered during a 2013/14 outbreak in an ICU in an Irish hospital and an LZDR vancomycin-resistant Enterococcus faecium (VRE) isolate from an LZDR-MRSE-positive patient...
August 28, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28960367/enlargement-of-the-who-international-repository-for-platelet-transfusion-relevant-bacteria-reference-strains
#19
E Spindler-Raffel, R J Benjamin, C P McDonald, S Ramirez-Arcos, K Aplin, I Bekeredjian-Ding, D de Korte, C Gabriel, B Gathof, K-M Hanschmann, K Hourfar, C Ingram, M R Jacobs, S D Keil, Y Kou, B Lambrecht, J Marcelis, Z Mukhtar, H Nagumo, T Niekerk, J Rojo, S Marschner, M Satake, A Seltsam, E Seifried, S Sharafat, M Störmer, S Süßner, S J Wagner, R Yomtovian
BACKGROUND AND OBJECTIVES: Interventions to prevent and detect bacterial contamination of platelet concentrates (PCs) have reduced, but not eliminated the sepsis risk. Standardized bacterial strains are needed to validate detection and pathogen reduction technologies in PCs. Following the establishment of the First International Reference Repository of Platelet Transfusion-Relevant Bacterial Reference Strains (the 'repository'), the World Health Organization (WHO) Expert Committee on Biological Standardisation (ECBS) endorsed further repository expansion...
September 27, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28956351/the-response-of-human-bacteria-to-static-magnetic-field-and-radiofrequency-electromagnetic-field
#20
David P E Crabtree, Brandon J Herrera, Sanghoon Kang
Cell phones and electronic appliances and devices are inseparable from most people in modern society and the electromagnetic field (EMF) from the devices is a potential health threat. Although the direct health effect of a cell phone and its radiofrequency (RF) EMF to human is still elusive, the effect to unicellular organisms is rather apparent. Human microbiota, including skin microbiota, has been linked to a very significant role in the health of a host human body. It is important to understand the response of human skin microbiota to the RF-EMF from cell phones and personal electronic devices, since this may be one of the potential mechanisms of a human health threat brought about by the disruption of the intimate and balanced host-microbiota relationship...
October 2017: Journal of Microbiology / the Microbiological Society of Korea
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