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https://www.readbyqxmd.com/read/28811823/protective-barrier-properties-of-rhinosectan-%C3%A2-spray-containing-xyloglucan-on-an-organotypic-3d-airway-tissue-model-mucilair-results-of-an-in-vitro-study
#1
Barbara De Servi, Francesco Ranzini, Núria Piqué
BACKGROUND: To evaluate barrier protective properties of Rhinosectan(®) spray, a medical device containing xyloglucan, on nasal epithelial cells (MucilAir). METHODS: MucilAir-Nasal, a three-dimensional organotypic (with different cell types) airway tissue model, was treated with the medical device Rhinosectan(®) (30 µL) or with controls (Rhinocort-budesonide-or saline solution). The protective barrier effects of Rhinosectan(®) were evaluated by: TEER (trans-epithelial electrical resistance) (preservation of tight junctions), Lucifer Yellow assay (preservation of paracellular flux) and confocal immunofluorescence microscopy (localization of tight junction proteins)...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28811757/cyclic-dipeptides-from-bacillus-vallismortis-bs07-require-key-components-of-plant-immunity-to-induce-disease-resistance-in-arabidopsis-against-pseudomonas-infection
#2
Seong Woo Noh, Rira Seo, Jung-Kwon Park, Md Maniruzzaman Manir, Kyungseok Park, Mee Kyung Sang, Surk-Sik Moon, Ho Won Jung
Cyclic dipeptides (CDPs) are one of the simplest compounds produced by living organisms. Plant-growth promoting rhizobacteria (PGPRs) also produce CDPs that can induce disease resistance. Bacillus vallismortis strain BS07 producing various CDPs has been evaluated as a potential biocontrol agent against multiple plant pathogens in chili pepper. However, plant signal pathway triggered by CDPs has not been fully elucidated yet. Here we introduce four CDPs, cyclo(Gly-L-Pro) previously identified from Aspergillus sp...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811756/pseudomonas-oleovorans-strain-kbpf-004-culture-supernatants-reduced-seed-transmission-of-cucumber-green-mottle-mosaic-virus-and-pepper-mild-mottle-virus-and-remodeled-aggregation-of-126-kda-and-subcellular-localization-of-movement-protein-of-pepper-mild-mottle
#3
Nam-Gyu Kim, Eun-Young Seo, Sang-Hyuk Han, Jun-Su Gong, Cheol-Nam Park, Ho-Seop Park, Leslie L Domier, John Hammond, Hyoun-Sub Lim
Efforts to control viral diseases in crop production include several types of physical or chemical treatments; antiviral extracts of a number of plants have also been examined to inhibit plant viral infection. However, treatments utilizing naturally selected microorganisms with activity against plant viruses are poorly documented. Here we report isolation of a soil inhabiting bacterium, Pseudomonas oleovorans strain KBPF-004 (developmental code KNF2016) which showed antiviral activity against mechanical transmission of tobamoviruses...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811074/management-of-multidrug-resistant-gram-negative-bacilli-infections-in-solid-organ-transplant-recipients-set-gesitra-seimc-reipi-recommendations
#4
REVIEW
J M Aguado, J T Silva, M Fernández-Ruiz, E Cordero, J Fortún, C Gudiol, L Martínez-Martínez, E Vidal, L Almenar, B Almirante, R Cantón, J Carratalá, J J Caston, E Cercenado, C Cervera, J M Cisneros, M G Crespo-Leiro, V Cuervas-Mons, J Elizalde-Fernández, M C Fariñas, J Gavaldà, M J Goyanes, B Gutiérrez-Gutiérrez, D Hernández, O Len, R López-Andujar, F López-Medrano, P Martín-Dávila, M Montejo, A Moreno, A Oliver, A Pascual, E Pérez-Nadales, A Román-Broto, R San-Juan, D Serón, A Solé-Jover, M Valerio, P Muñoz, J Torre-Cisneros
Solid organ transplant (SOT) recipients are especially at risk of developing infections by multidrug resistant (MDR) Gram-negative bacilli (GNB), as they are frequently exposed to antibiotics and the healthcare setting, and are regulary subject to invasive procedures. Nevertheless, no recommendations concerning prevention and treatment are available. A panel of experts revised the available evidence; this document summarizes their recommendations: (1) it is important to characterize the isolate's phenotypic and genotypic resistance profile; (2) overall, donor colonization should not constitute a contraindication to transplantation, although active infected kidney and lung grafts should be avoided; (3) recipient colonization is associated with an increased risk of infection, but is not a contraindication to transplantation; (4) different surgical prophylaxis regimens are not recommended for patients colonized with carbapenem-resistant GNB; (5) timely detection of carriers, contact isolation precautions, hand hygiene compliance and antibiotic control policies are important preventive measures; (6) there is not sufficient data to recommend intestinal decolonization; (7) colonized lung transplant recipients could benefit from prophylactic inhaled antibiotics, specially for Pseudomonas aeruginosa; (8) colonized SOT recipients should receive an empirical treatment which includes active antibiotics, and directed therapy should be adjusted according to susceptibility study results and the severity of the infection...
July 26, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28810631/hyperoside-inhibits-biofilm-formation-of-pseudomonas-aeruginosa
#5
Yixuan Sun, Fengjun Sun, Wei Feng, Xuewen Qiu, Yao Liu, Bo Yang, Yongchuan Chen, Peiyuan Xia
Pseudomonas aeruginosa (P. aeruginosa) is a common pathogen in hospital-acquired infection and is readily able to form biofilms. Due to its high antibiotic resistance, traditional antibacterial treatments exert a limited effect on P. aeruginosa biofilm infections. It has been indicated that hyperoside inhibits P. aeruginosa PAO1 (PAO1) biofilm formation without affecting growth. Therefore, the current study examined the biofilm formation and quorum sensing (QS) system of PAO1 in the presence of hyperoside. Confocal laser scanning microscopy analysis demonstrated that hyperoside significantly inhibited biofilm formation...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810329/-distribution-and-drug-resistance-of-pathogens-at-hematology-department-of-jiangsu-province-from-2014-to-2015-results-from-a-multicenter-retrospective-study
#6
Y K Wan, W Sang, B Chen, Y G Yang, L Q Zhang, A N Sun, Y J Liu, Y Xu, Y P Cai, C B Wang, Y F Shen, Y W Jiang, X Y Zhang, W Xu, M Hong, T Chen, R R Xu, F Li, Y L Xu, Y Xue, Y L Lu, Z M He, W M Dong, Z Chen, M H Ji, Y Y Yang, L J Zhai, Y Zhao, G Q Wu, J H Ding, J Cheng, W B Cai, Y M Sun, J Ouyang
Objective: To describe the distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015 to provide reference for empirical anti-infection treatment. Methods: Pathogens were from hematology department of 26 tertiary hospitals in Jiangsu Province from 2014 to 2015. Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or agar dilution method. Collection of drug susceptibility results and corresponding patient data were analyzed...
July 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28808815/physiological-responses-and-antioxidant-enzyme-changes-in-sulla-coronaria-inoculated-by-cadmium-resistant-bacteria
#7
Manel Chiboub, Salwa Harzalli Jebara, Omar Saadani, Imen Challougui Fatnassi, Souhir Abdelkerim, Moez Jebara
Plant growth promoting bacteria (PGPB) may help to reduce the toxicity of heavy metals on plants growing in polluted soils. In this work, Sulla coronaria inoculated with four Cd resistant bacteria (two Pseudomonas spp. and two Rhizobium sullae) were cultivated in hydroponic conditions treated by Cd; long time treatment 50 µM CdCl2 for 30 days and short time treatment; 100 µM CdCl2 for 7 days. Results showed that inoculation with Cd resistant PGPB enhanced plant biomass, thus shoot and root dry weights of control plants were enhanced by 148 and 35% respectively after 7 days...
August 14, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28808302/effects-of-one-week-empirical-antibiotic-therapy-on-the-early-development-of-gut-microbiota-and-metabolites-in-preterm-infants
#8
Danping Zhu, Sa Xiao, Jialin Yu, Qing Ai, Yu He, Chen Cheng, Yunhui Zhang, Yun Pan
The early postnatal period is the most dynamic and vulnerable stage in the assembly of intestinal microbiota. Antibiotics are commonly prescribed to newborn preterm babies and are frequently used for a prolonged duration in China. We hypothesized that the prolonged antibiotic therapy would affect the early development of intestinal microbiota and their metabolites. To test this hypothesis, we analyzed the stool microbiota and metabolites in 36 preterm babies with or without antibiotic treatment. These babies were divided into three groups, including two groups treated with the combination of penicillin and moxalactam or piperacillin-tazobactam for 7 days, and the other group was free of antibiotics...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807773/influence-of-oxidative-stress-on-the-antibacterial-activity-of-betulin-betulinic-acid-and-ursolic-acid
#9
H O B Oloyede, H O Ajiboye, M O Salawu, T O Ajiboye
Contribution of reactive oxygen species and oxidative stress in the antibacterial activities of betulin, betulinic acid and ursolic acid against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus was investigated. The minimum inhibitory concentrations of betulin, betulinic acid and ursolic acid against E. coli, P. aeruginosa and S. aureus are 1024-, 256- and 1024-μg/mL; 512-, 256- and 256 μg/mL; 256-, 256- and 64 μg/mL respectively. Cell viability of betulin-, betulinic acid- and ursolic acid-treated bacteria decrease in time dependent manner...
August 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28806947/conessine-as-a-novel-inhibitor-of-multidrug-efflux-pump-systems-in-pseudomonas-aeruginosa
#10
Thanyaluck Siriyong, Potjanee Srimanote, Sasitorn Chusri, Boon-Ek Yingyongnarongkul, Channarong Suaisom, Varomyalin Tipmanee, Supayang Piyawan Voravuthikunchai
BACKGROUND: Holarrhena antidysenterica has been employed as an ethnobotanical plant for the treatment of dysentery, diarrhoea, fever, and bacterial infections. Biological activities of the principle compound, conessine including anti-diarrhoea and anti-plasmodial effects were documented. Our previous study reported potency of Holarrhena antidysenterica extract and conessine as resistance modifying agents against extensively drug-resistant Acinetobacter baumannii. This study aimed to investigate (i) whether conessine, a steroidal alkaloid compound, could act as a resistance modifying agent against multidrug-resistant Pseudomonas aeruginosa, and (ii) whether MexAB-OprM efflux pump involved in the mechanism...
August 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28803838/current-epidemiology-of-resistance-among-gram-negative-bacilli-in-pediatric-patients-in-turkey
#11
Kubra Aykac, Yasemin Ozsurekci, Sevgen Tanir Basaranoglu, Mustafa Senol Akin, Ali Bulent Cengiz, Asiye Bicakcigil, Banu Sancak, Ates Kara, Mehmet Ceyhan
BACKGROUND: The increasing incidence of infections caused by drug-resistant Gram-negative organisms has led to a reemergence in worldwide. This study attempted to investigate the changes in resistance of Gram-negative bacteria to different classes of antibiotics and treatment options in invasive infections. METHODS: We performed this study retrospectively between January 2012 and January 2017 in our tertiary care university hospital. A total of 302 patients with Gram-negative bacterial bacteremia and meningitis were defined...
August 10, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28803496/management-of-multidrug-resistant-pseudomonas-aeruginosa-in-the-intensive-care-unit-state-of-the-art
#12
Alberto Enrico Maraolo, Marco Cascella, Silvia Corcione, Arturo Cuomo, Salvatore Nappa, Guglielmo Borgia, Francesco Giuseppe De Rosa, Ivan Gentile
Pseudomonas aeruginosa (PA) is one of the most important causes of healthcare-related infections among Gram-negative bacteria. The best therapeutic approach is controversial, especially for multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains as well as in the setting of most severe patients, such as in the intensive care unit (ICU). Areas covered: This article addresses several points. First, the main microbiological aspects of PA, focusing on its wide array of resistance mechanisms. Second, risk factors and the worse outcome linked to MDR-PA infection...
August 14, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28803460/-gastrostomy-tubes-indications-and-infectious-complications-in-a-tertiary-hospital
#13
M J Muñoz-Dávila, J M Xandri Ruipera, G Yagüe Guirao, C Salvador García, M Segovia Hernández
OBJECTIVE: Gastrostomy tube is the best option for long-term enteral nutrition. Among its limitations, infections represent the most frequent minor complication. Our aim is the knowledge of the number and type of gastrostomy tubes and its main indication in our hospital. In addition, prevalence of infectious complications was studied paying attention to the main etiologic agents and their antibiotic susceptibility. METHODS: Observational retrospective study from January 2010 to July 2015 through the electronic clinical history and the clinical microbiology laboratory software...
August 14, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28802902/pseudomonas-aeruginosa-mannose-sensitive-hemagglutinin-injection-treated-cytokine-induced-killer-cells-combined-with-chemotherapy-in-the-treatment-of-malignancies
#14
Chaoqi Zhang, Zhen Zhang, Liping Wang, Jiaoling Han, Feng Li, Chunyi Shen, Hong Li, Lan Huang, Xuan Zhao, Dongli Yue, Jianmin Huang, Yan Yan, Yi Zhang
Pseudomonas aeruginosa-mannose sensitive hemagglutinin (PA-MSHA) injection serves as immunological adjuvant in clinical treatment of cancer patients. In present study, we investigated whether PA-MSHA injection enhanced the anti-tumor efficacy of CIK cells. Twenty patients with malignancies were enrolled in this retrospective clinical trial. They were divided into two groups: 10 patients received PA-MSHA treated CIK cells transfusion combined with chemotherapy, and other patients accepted CIK cells and chemotherapy...
August 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28802245/hyphospheric-impacts-of-earthworms-and-arbuscular-mycorrhizal-fungus-on-soil-bacterial-community-to-promote-oxytetracycline-degradation
#15
Jia Cao, Chong Wang, Zhengxia Dou, Mengli Liu, Dingge Ji
A two-compartment microcosm was used to investigate the role of arbuscular mycorrhizal fungus (AMF) hyphae and earthworm in altering soil microbial community and OTC degradation. Treatments comprised OTC-contaminated hyphal compartments with or without AMF hyphae and with or without earthworms. Results indicated both AMF hyphae and earthworms accelerated OTC degradation; two degradation products were identified as 4-epi-oxytetracycline (EOTC) and 2-acetyl-2-decarboxamido-oxytetracycline (ADOTC). Q-PCR results indicated that both earthworms and AMF hyphae increased 16s rDNA gene, enhancing OTC degradation consequently...
July 19, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28802227/anti-inflammatory-effects-of-shufengjiedu-capsule-for-upper-respiratory-infection-via-the-erk-pathway
#16
Yanmei Li, Nianwei Chang, Yanqi Han, Mengge Zhou, Jie Gao, Yuanyuan Hou, Min Jiang, Tiejun Zhang, Gang Bai
BACKGROUND: Shufengjiedu Capsule (SFJD) is a type of Chinese traditional medicine compound for the treatment of acute upper respiratory tract infection. The present work aims to decipher the mechanism of SFJD. METHODS: In this study, we used target prediction and RNA sequence (RNA-Seq) based on transcriptome analysis to clarify the inflammation-eliminating mechanism of SFJD. Firstly, Pseudomonas aeruginosa (PAK) was used to induce acute lung injury in KM mice. After being treated by SFJD, the differently expressed genes were analyzed by RNA-Seq...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28802152/comparison-and-analysis-of-the-structures-and-binding-modes-of-antifungal-se-and-cyp51-inhibitors
#17
Bin Sun, Wanxu Huang, Min Liu, Kang Lei
With the abuse of clinical broad-spectrum antimicrobial agents, immunosuppressive agents, chemotherapy drugs, the emergence of pathogenic fungi resistance is more and more frequent. However, there is still no effective treatment for the fungal resistance. Squalenee epoxidase (SE) and 14 α-demethylase (CYP51) are important antifungal drug targets. In order to achieve a deeper insight into the structural characteristics and the action modes of SE and CYP51inhibitors, the homology model of SE (Candida albicans) was constructed using monooxygenase of Pseudomonas aeruginosa as template, and the reliability of model was confirmed by Ramachandran plots and Verify 3D...
August 1, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28800088/upregulation-and-identification-of-antibiotic-activity-of-a-marine-derived-streptomyces-sp-via-co-cultures-with-human-pathogens
#18
Anne A Sung, Samantha M Gromek, Marcy J Balunas
Marine natural product drug discovery has begun to play an important role in the treatment of disease, with several recently approved drugs. In addition, numerous microbial natural products have been discovered from members of the order Actinomycetales, particularly in the genus Streptomyces, due to their metabolic diversity for production of biologically active secondary metabolites. However, many secondary metabolites cannot be produced under laboratory conditions because growth conditions in flask culture differ from conditions in the natural environment...
August 11, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28798914/rapid-characterization-of-bacterial-electrogenicity-using-a-single-sheet-paper-based-electrofluidic-array
#19
Yang Gao, Daniel J Hassett, Seokheun Choi
Electrogenicity, or bacterial electron transfer capacity, is an important application which offers environmentally sustainable advances in the fields of biofuels, wastewater treatment, bioremediation, desalination, and biosensing. Significant boosts in this technology can be achieved with the growth of synthetic biology that manipulates microbial electron transfer pathways, thereby potentially significantly improving their electrogenic potential. There is currently a need for a high-throughput, rapid, and highly sensitive test array to evaluate the electrogenic properties of newly discovered and/or genetically engineered bacterial species...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28798903/anti-quorum-sensing-and-anti-biofilm-activity-of-delftia-tsuruhatensis-extract-by-attenuating-the-quorum-sensing-controlled-virulence-factor-production-in-pseudomonas-aeruginosa
#20
Vijay K Singh, Avinash Mishra, Bhavanath Jha
Multidrug-resistance bacteria commonly use cell-to-cell communication that leads to biofilm formation as one of the mechanisms for developing resistance. Quorum sensing inhibition (QSI) is an effective approach for the prevention of biofilm formation. A Gram-negative bacterium, Delftia tsuruhatensis SJ01, was isolated from the rhizosphere of a species of sedge (Cyperus laevigatus) grown along the coastal-saline area. The isolate SJ01 culture and bacterial crude extract showed QSI activity in the biosensor plate containing the reference strain Chromobacterium violaceum CV026...
2017: Frontiers in Cellular and Infection Microbiology
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