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pseudomonas infection

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https://www.readbyqxmd.com/read/28431414/intratracheal-instillation-of-neutrophils-rescues-bacterial-overgrowth-initiated-by-trauma-damage-associated-molecular-patterns
#1
Kiyoshi Itagaki, Ingred Riça, Jing Zhang, Dave Gallo, Melissa DePrato, Leo E Otterbein, Carl J Hauser
BACKGROUND: Nosocomial pneumonias are common in trauma patients and so interventions to prevent and treat nosocomial pneumonia may improve outcomes. Our prior work strongly suggests that tissue injury predisposes to infections like nosocomial pneumonia because mitochondrial debris originating from injured cells contains damage-associated molecular patterns that can reduce neutrophil (PMN) migration into the airway and diminish PMN function in response to bacterial inoculation of the airway...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28430297/stopping-conventional-showering-decreases-pseudomonas-infections-in-left-ventricular-assist-device-patients
#2
Nana Aburjania, Saadia Sherazi, Vakhtang Tchantchaleishvili, Jeffrey D Alexis, Christine M Hay
BACKGROUND: Left ventricular assist device (LVAD) exit-site infections represent a major challenge in the era of modern LVADs. Infections caused by Pseudomonas are particularly difficult to treat due to limited antibiotic susceptibility. We hypothesized that keeping the LVAD exit site dry while bathing could result in reduced incidence of Pseudomonas infections. METHODS: Starting in April 2013, all patients who underwent placement of HeartMate II (HM II) LVAD were instructed not to take conventional showers and to keep the exit site dry while bathing...
April 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28429871/potentiation-of-antibiotic-against-psedomonas-aeruginosa-biofilm-a-study-with-plumbagin-and-gentamicin
#3
Priya Gupta, Arpita Sarkar, Padmani Sandhu, Akshay Daware, Manash C Das, Yusuf Akhter, Surajit Bhattacharjee
AIM: Pseudomonas aeruginosa is one of the fatal biofilm forming pathogens which pose to be a problem in clinical infections, contamination of food and marine ecosystems. In this report a napthoquinone - Plumbagin has been explored for its antimicrobial (antibacterial and antibiofilm) activity against P. aeruginosa biofilm. The ability of Plumbagin to enhance the bioactivity of a known broad spectrum antibiotic was further assayed by combining the sub-MIC doses of Plumbagin with sub-MIC doses of Gentamicin against P...
April 21, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28429163/antimicrobial-susceptibility-of-bacterial-isolates-from-patients-presenting-with-ear-nose-and-throat-ent-infections-in-the-german-community-healthcare-setting
#4
B Olzowy, M Kresken, M Havel, D Hafner, B Körber-Irrgang
Empiric initial antibiotic therapy of bacterial infections is based primarily upon the susceptibility of the most common causative pathogens. The purpose of this study was to provide susceptibility data on six bacterial species known to cause ear, nose and throat (ENT) infections. A total of 1066 isolates collected during a nationwide laboratory-based surveillance study were analysed. All Streptococcus pyogenes isolates were penicillin (PEN)-susceptible, indicating that natural penicillins can still be recommended as the first-line treatment for group A streptococcal tonsillopharyngitis...
April 20, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28428302/draft-genome-sequence-of-a-multidrug-resistant-pseudomonas-aeruginosa-strain-isolated-from-a-patient-with-a-urinary-tract-infection-in-khartoum-sudan
#5
Mohamed Hussain, Malik Suliman, Abdalla Ahmed, Hisham Altayb, Elamin Elneima
Pseudomonas aeruginosa infection is difficult to treat due to the presence of antibiotic resistance determinants. Here, we report the genome sequence of a multidrug-resistant P. aeruginosa strain isolated from a patient with a urinary tract infection in 2015.
April 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28427052/glucosylceramide-critically-contributes-to-the-host-defense-of-cystic-fibrosis-lungs
#6
Barbara Kovacic, Carolin Sehl, Barbara Wilker, Markus Kamler, Katrin Anne Becker, Erich Gulbins
BACKGROUND: Cystic fibrosis (CF) is the most common autosomal-recessive disorder in western countries. Previous studies have demonstrated an important role of sphingolipids in the pathophysiology of cystic fibrosis. It has been shown that ceramide has a central role in various pulmonary infections, including those with Pseudomonas aeruginosa (P. aeruginosa). Ceramide is accumulated in the airways of CF mice and patients. However, little is known about a potential role of glucosylceramide in cystic fibrosis...
March 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28423869/protective-effects-of-bacillus-subtilis-against-salmonella-infection-in-the-microbiome-of-hy-line-brown-layers
#7
Ju Kyoung Oh, Edward Alain B Pajarillo, Jong Pyo Chae, In Ho Kim, D-K Kang
Objective: This study investigated the effects of Bacillus subtilis CSL2 administration before Salmonella challenge on the fecal microbiota and microbial functionality of Hy-line Brown (HLB) laying hens. Methods: Fecal samples were collected from control (CON), Salmonella-infected (SAL) and Salmonella-infected, probiotic-treated (PRO) groups before and after Salmonella challenge for microbiome analysis using 16S rRNA gene pyrosequencing. Results: Infection with Salmonella led to decreased microbial diversity in hen feces; diversity was recovered with Bacillus administration...
April 19, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28423458/dissecting-virulence-function-from-recognition-cell-death-suppression-in-nicotiana-benthamiana-by-xopq-hopq1-family-effectors-relies-on-eds1-dependent-immunity
#8
Norman Adlung, Ulla Bonas
Many Gram-negative plant pathogenic bacteria express effector proteins of the XopQ/HopQ1 family which are translocated into plant cells via the type III secretion system during infection. In Nicotiana benthamiana, recognition of XopQ/HopQ1 proteins induces an effector-triggered immunity (ETI) reaction which is not associated with strong cell death but renders plants immune against Pseudomonas syringae and Xanthomonas campestris pv. vesicatoria strains. Additionally, XopQ suppresses cell death in N. benthamiana when transiently co-expressed with cell death inducers...
April 19, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28422188/resolvin-d1-enhances-the-resolution-of-lung-inflammation-caused-by-long-term-pseudomonas-aeruginosa-infection
#9
M Codagnone, E Cianci, A Lamolinara, V C Mari, A Nespoli, E Isopi, D Mattoscio, M Arita, A Bragonzi, M Iezzi, M Romano, A Recchiuti
Pseudomonas aeruginosa lung infection is a main cause of disability and mortality worldwide. Acute inflammation and its timely resolution are crucial for ensuring bacterial clearance and limiting tissue damage. Here, we investigated protective actions of resolvin (Rv) D1 in lung infection induced by the RP73 clinical strain of P. aeruginosa. RvD1 significantly diminished bacterial growth and neutrophil infiltration during acute pneumonia caused by RP73. Inoculum of RP73, immobilized in agar beads, resulted in persistent lung infection up to 21 days, leading to a non resolving inflammation reminiscent of human pathology...
April 19, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28421562/prevention-of-bacterial-biofilm-formation-on-soft-contact-lenses-using-natural-compounds
#10
Amira M El-Ganiny, Ghada H Shaker, Abeer A Aboelazm, Heba A El-Dash
PURPOSE: In eye care field, contact lenses (CL) have a great impact on improving vision, but their use can be limited by ocular infection. CL- associated infections can be reduced by good attention to CL storage case practice. CL-care solutions should be able to control microbial growth on CL. The aim of the study was to evaluate and compare the efficacy of CL-care solutions (found in Egyptian market) with some natural compounds in removal and inhibition of bacterial biofilm formed on soft CL...
December 2017: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/28421166/in-vivo-and-in-vitro-interactions-between-pseudomonas-aeruginosa-and-staphylococcus-spp
#11
REVIEW
An Hotterbeekx, Samir Kumar-Singh, Herman Goossens, Surbhi Malhotra-Kumar
The significance of polymicrobial infections is increasingly being recognized especially in a biofilm context wherein multiple bacterial species-including both potential pathogens and members of the commensal flora-communicate, cooperate, and compete with each other. Two important bacterial pathogens that have developed a complex network of evasion, counter-inhibition, and subjugation in their battle for space and nutrients are Pseudomonas aeruginosa and Staphylococcus aureus. Their strain- and environment-specific interactions, for instance in the cystic fibrosis lung or in wound infections, show severe competition that is generally linked to worse patient outcomes...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28421049/transcriptomic-and-metabolomics-profiling-of-phage-host-interactions-between-phage-pap1-and-pseudomonas-aeruginosa
#12
Xia Zhao, Mengyu Shen, Xingyu Jiang, Wei Shen, Qiu Zhong, Yuhui Yang, Yinling Tan, Melissa Agnello, Xuesong He, Fuquan Hu, Shuai Le
The basic biology of bacteriophage-host interactions has attracted increasing attention due to a renewed interest in the therapeutic potential of bacteriophages. In addition, knowledge of the host pathways inhibited by phage may provide clues to novel drug targets. However, the effect of phage on bacterial gene expression and metabolism is still poorly understood. In this study, we tracked phage-host interactions by combining transcriptomic and metabolomic analyses in Pseudomonas aeruginosa infected with a lytic bacteriophage, PaP1...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28421042/mosquito-microbiome-dynamics-a-background-for-prevalence-and-seasonality-of-west-nile-virus
#13
Eva Novakova, Douglas C Woodhams, Sonia M Rodríguez-Ruano, Robert M Brucker, Jonathan W Leff, Amin Maharaj, Amnon Amir, Rob Knight, James Scott
Symbiotic microbial communities augment host phenotype, including defense against pathogen carriage and infection. We sampled the microbial communities in 11 adult mosquito host species from six regions in southern Ontario, Canada over 3 years. Of the factors examined, we found that mosquito species was the largest driver of the microbiota, with remarkable phylosymbiosis between host and microbiota. Seasonal shifts of the microbiome were consistently repeated over the 3-year period, while region had little impact...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28418096/expression-of-toll-like-receptors-in-t-lymphocytes-stimulated-with-n-3-oxododecanoyl-l-homoserine-lactone-from-pseudomonas-aeruginosa
#14
Lei Bao, Jialin Yu, Haiying Zhong, Daochao Huang, Qi Lu
The establishment of chronic Pseudomonas aeruginosa infections is correlated with the disturbance of the host immune system. The P. aeruginosa quorum-sensing molecule N-3-(oxododecanoyl)-L-homoserine lactone (3-O-C12-HSL) has the potential to modulate the host immune system. The immune system recognizes pathogens via toll-like receptors (TLRs). We found that 3-O-C12-HSL induced TLR changes in monocytes. However, the role of T cells in P. aeruginosa infection has not been delineated. In order to understand this activity, we examined whether 3-O-C12-HSL has an effect on the immune function and the expression of TLRs in T lymphocytes...
April 18, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28418081/assessment-of-biofilm-removal-capacity-of-a-broad-host-range-bacteriophage-jhp-against-pseudomonas-aeruginosa
#15
Muafia Shafique, Iqbal Ahmad Alvi, Zaigham Abbas, Shafiq Ur Rehman
Pseudomonas aeruginosa is an efficient biofilm-dwelling microbial pathogen, associated with nosocomial infections. These biofilm-associated infections are resistant to antibiotics and immune defenses, therefore pose major problem against their treatment. This scenario demands alternative therapeutic regimens, and bacteriophage therapy is one among potential strategies for clinical management of multiple drug resistance. In this investigation, the efficacy of a bacteriophage, JHP, is evaluated to eradicate P...
April 18, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28417451/prophylactic-anti-staphylococcal-antibiotics-for-cystic-fibrosis
#16
REVIEW
Alan R Smyth, Margaret Rosenfeld
BACKGROUND: Staphylococcus aureus causes pulmonary infection in young children with cystic fibrosis. Prophylactic antibiotics are prescribed hoping to prevent such infection and lung damage. Antibiotics have adverse effects and long-term use might lead to infection with Pseudomonas aeruginosa. This is an update of a previously published review. OBJECTIVES: To assess continuous oral antibiotic prophylaxis to prevent the acquisition of Staphylococcus aureus versus no prophylaxis in people with cystic fibrosis, we tested these hypotheses...
April 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28415949/%C3%AE-catenin-promotes-intracellular-bacterial-killing-via-suppression-of-pseudomonas-aeruginosa-triggered-macrophage-autophagy
#17
Qiang Fu, Kang Chen, Qian Zhu, Weijia Wang, Fuda Huang, Lishao Miao, Xinger Wu
Objective To investigate β-catenin-mediated bacterial elimination during Pseudomonas aeruginosa infection of macrophage-like RAW264.7 cells. Methods Cell viability and catenin beta 1 ( CTNNB1) expression in RAW264.7 cells following P. aeruginosa infection versus uninfected cells, were detected by cell counting kit-8 assay and β-catenin Western blots. RAW264.7 cells with CTNNB1 overexpression were established with β-catenin lentivirus using flow cytometry and clonogenic limiting dilution assays. Bacterial killing was measured by plate counts; phagocytosis and nitric oxide (NO) were measured by flow cytometry; and reactive oxygen species (ROS) were measured using Griess reaction...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28415945/pseudomonas-aeruginosa-endophthalmitis-caused-by-accidental-iatrogenic-ocular-injury-with-a-hypodermic-needle
#18
Cheng-Wei Lu, Ji-Long Hao, Xiu-Fen Liu, Ling-Ling Liang, Dan-Dan Zhou
Iatrogenic traumatic endophthalmitis is a rare but serious ocular infection that can lead to severe vision loss. A 44-year-old man presented with pain and decreased vision in the right eye 4 hours after injury with a hypodermic needle during irrigation of his eye. Slit-lamp examination revealed a penetrating corneal puncture and iris hole in the right eye. Twenty hours later, his visual acuity had decreased to hand motion, and severe fibrinoid uveitis was noted. He immediately underwent irrigation of the anterior chamber and intravitreal antibiotic injection...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28414678/what-the-eyes-don-t-see-the-heart-does-grieve-over
#19
M Sciaudone, M Dery
INTRODUCTION: A 71 year old Peruvian woman presented with blurry vision and bilateral eye pain and had evidence of bilateral endophthalmitis on eye examination. Her past medical history was notable for multiple abdominal surgeries within the preceding months, including an incarcerated inguinal hernia repair which required an ileostomy placement, and cholecystitis requiring cholecystostomy tube placement. Over her multiple long hospitalizations, she developed bacteremia and fungemia on several occasions, with organisms including Enterobacter cloacae, Klebsiella pneumoniae, Bacteroides fragilis, Pseudomonas aeruginosa, Enterococcus faecium, and Candida albicans...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28414441/suppression-of-enteric-bacteria-by-bacteriophages-importance-of-phage-polyvalence-in-the-presence-of-soil-bacteria
#20
Pingfeng Yu, Jacques Mathieu, Yu Yang, Pedro J J Alvarez
Bacteriophages are widely recognized for their importance in microbial ecology and bacterial control. However, little is known about how phage polyvalence (i.e., broad host range) affects bacterial suppression and interspecies competition in environments harboring enteric pathogens and soil bacteria. Here we compare the efficacy of polyvalent phage PEf1 versus coliphage T4 in suppressing a model enteric bacterium (E. coli K-12) in mixtures with soil bacteria (Pseudomonas putida F1 and Bacillus subtilis 168)...
April 21, 2017: Environmental Science & Technology
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