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https://www.readbyqxmd.com/read/28821452/pinocembrin-a-novel-histidine-decarboxylase-inhibitor-with-anti-allergic-potential-in-in-vitro
#1
Hamza Hanieh, Villianur Ibrahim Hairul Islam, Subramanian Saravanan, Muthiah Chellappandian, Kessavane Ragul, Arumugam Durga, Kaliyamoorthy Venugopal, Venugopal Senthilkumar, Palanisamy Senthilkumar, Krishnaraj Thirugnanasambantham
Pinocembrin (5, 7- dihydroxy flavanone) is the most abundant chiral flavonoid found in propolis, exhibiting antioxidant, antimicrobial and anti-inflammatory properties. However, the effect of Pinocembrin on allergic response is unexplored. Thus, current study aimed at investigating the effects of Pinocembrin on IgE-mediated allergic response in vitro. A special emphasis was directed toward histidine decarboxylase (HDC) and other pro-allergic and pro-inflammatory mediators. Preliminary studies, using a microbiological model of Klebsiella pneumoniae, provided first evidences that suggest Pinocembrin as a potential thermal stable inhibitor for HDC...
August 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28821026/ultrahigh-antibacterial-efficacy-of-meropenem-loaded-chitosan-nanoparticles-in-a-septic-animal-model
#2
Ayat Abdelkader, Mohamed A El-Mokhtar, Ola Abdelkader, Mostafa A Hamad, Mahmoud Elsabahy, Omaima N El-Gazayerly
Antimicrobial resistance is one of the most significant health challenges worldwide. Meropenem is a broad spectrum beta-lactam antibiotic that possesses high activity against Gram-positive and Gram-negative bacteria. However, it has a short plasma half-life, and thus requiring frequent administration of high doses. For the first time, meropenem-loaded chitosan nanoparticles were prepared and evaluated as a potential tool to overcome antimicrobial resistance and to improve pharmacokinetics of the drug. Spherical nanosized particles were prepared and demonstrated ultrahigh encapsulation efficiency of meropenem (i...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28819316/association-of-ambient-particulate-matter-2-5-with-intensive-care-unit-admission-due-to-pneumonia-a-distributed-lag-non-linear-model
#3
Zhongheng Zhang, Yucai Hong, Ning Liu
Air pollution in China has become a major environmental problem. There is a lack of evidence on the impact of haze (especially PM2.5) on intensive care unit admission due to pneumonia (ICUp). We hypothesized that PM2.5 was independently associated with ICUp and there was a non-linear time lag effect. All ICU admissions occurred from January 1, 2014 to December 31, 2016 in Sir Run-Run Shaw hospital were included in the study. The primary reasons for admission were categorized into pneumonia and non-pneumonia...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818473/effectiveness-of-23-valent-pneumococcal-polysaccharide-vaccine-and-seasonal-influenza-vaccine-for-pneumonia-among-the-elderly-selection-of-controls-in-a-case-control-study
#4
Kyoko Kondo, Kanzo Suzuki, Masakazu Washio, Satoko Ohfuji, Wakaba Fukushima, Akiko Maeda, Yoshio Hirota
We conducted a case-control study to elucidate associations between pneumonia in elderly individuals and 23-valent pneumococcal polysaccharide vaccine (PPSV23) and seasonal influenza vaccine (influenza vaccine). Here, we examined selection of controls in our study using an analytic epidemiology approach. The study period was from October 1, 2009 through September 30, 2014. Cases comprised ≥65-year-old patients newly diagnosed with pneumonia. For every case with pneumonia, two patients with other diseases (one respiratory medicine, one non-respiratory medicine) who were sex-, age-, visit date- and visit hospital-matched were selected as controls...
August 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28817689/characterization-and-formulation-into-solid-dosage-forms-of-a-novel-bacteriophage-lytic-against-klebsiella-oxytoca
#5
Teagan L Brown, Steve Petrovski, Dannielle Hoyle, Hiu Tat Chan, Peter Lock, Joseph Tucci
AIM: To isolate and characterize bacteriophage lytic for the opportunistic pathogen Klebsiella oxytoca and their formulation into a range of solid dosage forms for in-vitro testing. METHODS AND RESULTS: We report the isolation, genomic and functional characterization of a novel bacteriophage lytic for Klebsiella oxytoca, which does not infect the closely related Klebsiella pneumoniae. This bacteriophage was formulated into suppositories and troches and shown to be released and lyse underlying Klebsiella oxytoca bacteria in an in-vitro model...
2017: PloS One
https://www.readbyqxmd.com/read/28815084/predictive-factors-for-post-operative-respiratory-infections-after-esophagectomy-for-esophageal-cancer-outcome-of-randomized-trial
#6
Surya Say Biere, Mark I van Berge Henegouwen, Luigi Bonavina, Camiel Rosman, Josep Roig Garcia, Suzanne S Gisbertz, Donald L van der Peet, Miguel A Cuesta
BACKGROUND: The first and only randomized trial comparing open esophagectomy (OE) with minimally invasive esophagectomy (MIE) showed a significant lower incidence of post-operative respiratory infections in the patients who underwent MIE. In order to identify which specific factors are related to a better respiratory outcome in this trial an additional analysis was performed. METHODS: This was a prospective, multicenter, randomized controlled trial. Eligible patients, with a resectable intrathoracic esophageal carcinoma, including the gastro-esophageal (GE) junction tumors and Eastern Cooperative Oncology Group ≤2, were randomized to either MIE or OE...
July 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28814662/irgm1-coordinately-regulates-autoimmunity-and-host-defense-at-select-mucosal-surfaces
#7
Kathleen M Azzam, Jennifer H Madenspacher, Derek W Cain, Lihua Lai, Kymberly M Gowdy, Prashant Rai, Kyathanahalli Janardhan, Natasha Clayton, Willie Cunningham, Heather Jensen, Preeyam S Patel, John F Kearney, Gregory A Taylor, Michael B Fessler
The pathogenesis of primary Sjogren's syndrome (SS), an autoimmune disease that targets the mucosa of exocrine tissues, is poorly understood. Although several mouse models have been developed that display features of SS, most of these are within the larger context of a lupus-like presentation. Immunity-related GTPase family M protein 1 (Irgm1) is an interferon-inducible cytoplasmic GTPase that is reported to regulate autophagy and mitochondrial homeostasis. Here, we report that naive Irgm1-/- mice display lymphocytic infiltration of multiple mucosal tissues including the lung in a manner reminiscent of SS, together with IgA class-predominant autoantibodies including anti-Ro and anti-La...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28809447/pulmonary-delivery-of-tea-tree-oil-%C3%AE-cyclodextrin-inclusion-complexes-for-the-treatment-of-fungal-and-bacterial-pneumonia
#8
Miao Li, Lifei Zhu, Tongtong Zhang, Boming Liu, Lina Du, Yiguang Jin
OBJECTIVES: Bacterial pneumonia is a common cause of death worldwide. Tea tree oil (TTO) is a potent antimicrobial natural product, which is formulated in dry powder inhalers (DPIs) for the treatment of fungal and bacterial pneumonia. METHODS: Tea tree oil-β-cyclodextrin inclusion complexes (TTO-β-CD) were prepared and characterized. Aerodynamic properties of TTO-β-CD powders were measured. The rat models of fungal (Candida albicans) and bacterial (Acinetobacter baumannii) pneumonia were prepared...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28808790/health-risks-in-the-cleaning-industry-a-belgian-census-linked-mortality-study-1991-2011
#9
Laura Van den Borre, Patrick Deboosere
PURPOSE: Cleaning work has been associated with a wide range of occupational health hazards. However, little is known about mortality risks in the cleaning industry. This study examines differences in cause-specific mortality between cleaners, manual and non-manual workers. METHODS: Using exhaustive census-linked mortality data, the total Belgian working population aged 30-60 was selected from the 1991 census. Analyses were based on 202,339 male and 58,592 female deaths between 1 March 1991 and 31 December 2011...
August 14, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28807913/reducing-antibacterial-development-risk-for-gsk1322322-by-exploring-potential-human-dose-regimens-in-nonclinical-efficacy-studies-using-immunocompetent-rats
#10
Jennifer L Hoover, Christine M Singley, Philippa Elefante, Peter DeMarsh, Magdalena Zalacain, Stephen Rittenhouse
Directly testing proposed clinical dosing regimens in nonclinical studies can reduce risk during the development of novel antibacterial agents. Optimal dosing regimens can be identified in animal models by testing recreated human pharmacokinetic profiles. An example of this approach is presented using continuous intravenous infusions of GSK1322322 in immunocompetent rats to evaluate recreated Phase 1 human exposures in pneumonia models with Streptococcus pneumoniae and Haemophilus influenzae and an abscess model with Staphylococcus aureus GSK1322322 was administered via continuous intravenous infusion to recreate 1000 or 1500 mg oral doses every 12h in humans...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28806819/indicators-of-dysphagia-in-aged-care-facilities
#11
Dai Pu, Thomas Murry, May C M Wong, Edwin M L Yiu, Karen M K Chan
Purpose: The current cross-sectional study aimed to investigate risk factors for dysphagia in elderly individuals in aged care facilities. Method: A total of 878 individuals from 42 aged care facilities were recruited for this study. The dependent outcome was speech therapist-determined swallowing function. Independent factors were Eating Assessment Tool score, oral motor assessment score, Mini-Mental State Examination, medical history, and various functional status ratings...
August 14, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28806403/th17-cells-are-associated-with-protection-from-ventilator-associated-pneumonia
#12
Marika Orlov, Victoria Dmyterko, Mark M Wurfel, Carmen Mikacenic
BACKGROUND: CD4+ T-helper 17 (Th17) cells and Interleukin (IL)-17A play an important role in clearing pathogens in mouse models of pneumonia. We hypothesized that numbers of Th17 cells and levels of IL-17A are associated with risk for nosocomial pneumonia in humans. METHODS: We collected bronchoalveolar lavage (BAL) fluid from mechanically ventilated (n = 25) patients undergoing quantitative bacterial culture to evaluate for ventilator associated pneumonia (VAP)...
2017: PloS One
https://www.readbyqxmd.com/read/28806210/risk-stratification-for-major-postoperative-complications-in-patients-undergoing-intra-abdominal-general-surgery-using-latent-class-analysis
#13
Minjae Kim, Melanie M Wall, Guohua Li
BACKGROUND: Preoperative risk stratification is a critical element in assessing the risks and benefits of surgery. Prior work has demonstrated that intra-abdominal general surgery patients can be classified based on their comorbidities and risk factors using latent class analysis (LCA), a model-based clustering technique designed to find groups of patients that are similar with respect to characteristics entered into the model. Moreover, the latent risk classes were predictive of 30-day mortality...
August 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28803551/hospitalisation-for-lower-respiratory-tract-infection-in-children-in-the-province-of-quebec-canada-before-and-during-the-pneumococcal-conjugate-vaccine-era
#14
G Anderson, G Deceuninck, Z Zhou, F D Boucher, Y Bonnier Viger, R Gilca, P DE Wals
Streptococcus pneumoniae is an important cause of community-acquired pneumonia and pneumococcal conjugate vaccines (PCVs) may reduce this burden. This study's goal was to analyse trends in lower respiratory tract infections (LRTI) hospitalisations before and during a routine vaccination programme targeting all newborns with PCV was started in the province of Quebec, Canada in December 2004. The study population included hospital admissions with a main diagnosis of LRTI among 6-59 month-old Quebec residents from April 2000 to December 2014...
August 14, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28801346/pan-ppar-agonist-iva337-is-effective-in-experimental-lung-fibrosis-and-pulmonary-hypertension
#15
Jerome Avouac, Irena Konstantinova, Christophe Guignabert, Sonia Pezet, Jeremy Sadoine, Thomas Guilbert, Anne Cauvet, Ly Tu, Jean-Michel Luccarini, Jean-Louis Junien, Pierre Broqua, Yannick Allanore
OBJECTIVE: To evaluate the antifibrotic effects of the pan-peroxisome proliferator-activated receptor (PPAR) agonist IVA337 in preclinical mouse models of pulmonary fibrosis and related pulmonary hypertension (PH). METHODS: IVA337 has been evaluated in the mouse model of bleomycin-induced pulmonary fibrosis and in Fra-2 transgenic mice, this latter being characterised by non-specific interstitial pneumonia and severe vascular remodelling of pulmonary arteries leading to PH...
August 11, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28800724/a-comparison-of-machine-learning-and-bayesian-modelling-for-molecular-serotyping
#16
Richard Newton, Lorenz Wernisch
BACKGROUND: Streptococcus pneumoniae is a human pathogen that is a major cause of infant mortality. Identifying the pneumococcal serotype is an important step in monitoring the impact of vaccines used to protect against disease. Genomic microarrays provide an effective method for molecular serotyping. Previously we developed an empirical Bayesian model for the classification of serotypes from a molecular serotyping array. With only few samples available, a model driven approach was the only option...
August 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28800589/prognostic-factors-and-outcomes-in-japanese-lung-transplant-candidates-with-interstitial-lung-disease
#17
Kohei Ikezoe, Tomohiro Handa, Kiminobu Tanizawa, Toyofumi F Chen-Yoshikawa, Takeshi Kubo, Akihiro Aoyama, Hideki Motoyama, Kyoko Hijiya, Shinsaku Tokuda, Yoshinari Nakatsuka, Yuko Yamamoto, Ayako Oshima, Shin-Ichi Harashima, Sonoko Nagai, Toyohiro Hirai, Hiroshi Date, Kazuo Chin
OBJECTIVE: Young patients with advanced interstitial lung disease (ILD) are potential candidates for cadaveric lung transplantation. This study aimed to examine clinical features, outcomes, and prognostic factors in Japanese ILD patients awaiting lung transplantation. METHODS: We investigated the clinical features and outcomes of 77 consecutive candidates with ILD who were referred to Kyoto University Hospital and subsequently actively listed for lung transplant in the Japan Organ Transplant Network between 2010 and 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28800159/mouse-models-of-acinetobacter-baumannii-infection
#18
Greg Harris, Rhonda KuoLee, H Howard Xu, Wangxue Chen
This unit describes basic protocols for infecting mice through intranasal and intraperitoneal routes with Acinetobacter baumannii to induce associated pneumonia and sepsis, the two most common manifestations of clinical infections with this pathogen. By selecting the appropriate protocols and bacterial strains of different virulence, these mouse models provide an opportunity to study the infection pathogenesis and host-immune responses, and to evaluate the efficacies of prophylactic and therapeutic anti-A. baumannii candidates...
August 11, 2017: Current Protocols in Microbiology
https://www.readbyqxmd.com/read/28796661/fms-like-tyrosine-kinase-3-ligand-attenuates-local-and-systemic-infection-in-a-model-of-post-burn-pneumonia
#19
Gabriel Hundeshagen, Weihua Cui, Lindsay Musgrove, Aaron Cherry, Seung-Jin Lee, Robert A Cox, Tracy Toliver-Kinsky
BACKGROUND: Burn injury induces immunosuppression and promotes infection with opportunistic pathogens. Pneumonia and sepsis are leading causes of post-burn morbidity and mortality. Fms-like tyrosine kinase-3 ligand (Flt3L) improves local and systemic resistance to P. aeruginosa-associated burn wound infection. This study evaluates the effects of post-burn prophylactic Flt3L treatment on local and systemic infection and inflammation in a murine model of pneumonia and sepsis. METHODS: Mice received a severe scald burn, were treated with Flt3L or vehicle (CTR) for 5 days and inoculated trans-nasally with P...
August 7, 2017: Shock
https://www.readbyqxmd.com/read/28790180/pseudomonas-aeruginosa-lasb-protease-impairs-innate-immunity-in-mice-and-humans-by-targeting-a-lung-epithelial-cystic-fibrosis-transmembrane-regulator-il-6-antimicrobial-repair-pathway
#20
Vinciane Saint-Criq, Bérengère Villeret, Fabien Bastaert, Saadé Kheir, Aurélie Hatton, Aurélie Cazes, Zhou Xing, Isabelle Sermet-Gaudelus, Ignacio Garcia-Verdugo, Aleksander Edelman, Jean-Michel Sallenave
BACKGROUND: Pseudomonas aeruginosa lung infections are a huge problem in ventilator-associated pneumonia, cystic fibrosis (CF) and in chronic obstructive pulmonary disease (COPD) exacerbations. This bacterium secretes virulence factors that may subvert host innate immunity. OBJECTIVE: We evaluated the effect of P. aeruginosa elastase LasB, an important virulence factor secreted by the type II secretion system, on ion transport, innate immune responses and epithelial repair, both in vitro and in vivo...
August 8, 2017: Thorax
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