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https://www.readbyqxmd.com/read/29680931/cinnamic-acid-attenuates-quorum-sensing-associated-virulence-factors-and-biofilm-formation-in-pseudomonas-aeruginosa-pao1
#1
Jobina Rajkumari, Subhomoi Borkotoky, Ayaluru Murali, Kitlangki Suchiang, Saswat Kumar Mohanty, Siddhardha Busi
OBJECTIVE: Anti-quorum sensing and anti-biofilm efficacy of Cinnamic acid against Pseudomonas aeruginosa was comparatively assessed with respect to potent quorum sensing inhibitor, Baicalein. RESULTS: At sub-lethal concentration, Cinnamic acid effectively inhibited both the production of the QS-dependent virulence factors and biofilm formation in P. aeruginosa without affecting the viability of the bacterium. The phytocompound interfered with the initial attachment of planktonic cells to the substratum thereby causing reduction in biofilm development...
April 21, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29672972/metabolomic-profiling-and-biological-investigation-of-the-marine-sponge-derived-bacterium-rhodococcus-sp-ua13
#2
Yasmin Elsayed, John Refaat, Usama Ramadan Abdelmohsen, Eman Maher Othman, Helga Stopper, Mostafa Ahmed Fouad
INTRODUCTION: Marine sponge-associated actinomycetes are potent sources of bioactive natural products of pharmaceutical significance. They also contributed to the discovery of several clinically relevant antimicrobials. OBJECTIVE: To apply the non-targeted metabolomics approach in chemical profiling of the sponge-derived bacterium Rhodococcus sp. UA13, formerly recovered from the Red Sea sponge Callyspongia aff. Implexa, along with testing for the anti-infective potential of its different fractions...
April 19, 2018: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/29672953/astragalus-polysaccharides-exerts-anti-infective-activity-by-inducing-human-cathelicidin-antimicrobial-peptide-ll-37-in-respiratory-epithelial-cells
#3
Lin Zhao, Shuai Tan, Hai Zhang, Peng Liu, Yu-Zhu Tan, Jia-Chuan Li, Da Jia, Xiao-Fei Shen
Astragalus polysaccharides (APS), one of the major active components in Astragalus membranaceus, is an effective immunomodulator used in the treatment of immunological diseases in China. However, the anti-infective action and mechanism of APS is not fully known. In the present study, we found that APS induced the expression of human cathelicidin antimicrobial peptide LL-37, a key host anti-infective molecule, in both mRNA and protein levels in respiratory epithelial cells HBE16 and A549. Furthermore, the lysate and supernatant from APS-treated HBE16 cells both exhibited an obvious antibacterial action, which was partially neutralizated by LL-37 monoclonal antibody...
April 19, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29672023/chitosan-based-peptidopolysaccharides-as-cationic-antimicrobial-agents-and-antibacterial-coatings
#4
Dicky Pranantyo, Li Qun Xu, En-Tang Kang, Mary B Chan-Park
The rapid spread of multidrug resistant bacteria has called for effective antimicrobial agents which work on a more direct mechanism of killing. Cationic peptidopolysaccharides are developed in the present work to mimic the peptidoglycan structure of bacteria and to enhance the membrane-compromising bactericidal efficacy. Antimicrobial CysHHC10 peptide was grafted to the C-2 (amino) or C-6 (hydroxyl) position of chitosan backbone via thiol-maleimide 'click' conjugation, utilizing the maleimidohexanoic linkers...
April 19, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29665907/-influencing-factors-of-nosocomial-infection-after-chemotherapy-in-adult-patients-with-acute-myeloid-leukemia-and-its-control-strategy
#5
Shu-Tan Li, Liu Tang, Xiao-Min Chen, Xiao-Ming Li
OBJECTIVE: To investigate the influencing factors of nosocomial infection in adult patients with acute myeloid leukemia (AML) and its control strategies. METHODS: The clinical data of 109 patients with AML treated in our hospital from June 2014 to June 2017 were retrospectively analyzed. The clinical factors were analyzed retrospectively, and the influencing factors of infection after chemotherapy were explored. RESULTS: A total of 109 patients received chemotherapy for 267 case-times, the infection occurred in 168 case-times, the nosocomial infection rate was 62...
April 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29663810/dual-catalytic-synthesis-of-antiviral-compounds-based-on-metallocarbene-azide-cascade-chemistry
#6
Bren Jordan P Atienza, Lionel Dylan Jensen, Sarah L Noton, Anil Kumar Victoria Ansalem, Tom Hobman, Rachel Fearns, David J Marchant, F G West
Aryl azides trap ortho metallocarbene intermediates to generate indolenones possessing a reactive C-acylimine moiety, which can react with added indole nucleophiles to afford the 2-(3-indolyl)indolin-3-one scaffold found in the antiviral natural product isatisine A. This overall process occurs through a dual catalytic sequence at room temperature. Redox activation of the Cu(OTf)2 precatalyst by indole results in catalytically competent Cu(I) required for azide-metallocarbene coupling. The Brønsted acid that is also formed from Cu(OTf)2 reduction is responsible for catalysis of the C-C bond-forming indole addition step...
April 17, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29661933/interleukin-22-immunotherapy-during-severe-influenza-enhances-lung-tissue-integrity-and-reduces-secondary-bacterial-systemic-invasion
#7
Adeline Barthelemy, Valentin Sencio, Daphnée Soulard, Lucie Deruyter, Christelle Faveeuw, Ronan Le Goffic, François Trottein
Severe bacterial (pneumococcal) infections are commonly associated with influenza and are significant contributors to the excess morbidity and mortality of influenza. Disruption of lung tissue integrity during influenza participates in bacterial pulmonary colonization and dissemination out of the lungs. Interleukin (IL)-22 has gained considerable interest in anti-inflammatory and anti-infection immunotherapy over the last decade. In the current study, we investigated the effect of exogenous IL-22 delivery on the outcome of pneumococcal superinfection post-influenza...
April 16, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29661464/cauliflower-like-neoplasm-of-duodenal-papilla-in-a-liver-transplant-recipient-what-should-we-think-and-do-a-case-report
#8
D-L Wan, M-X Li, L Bao, L-L Zhang, L Zhang, Q-Y Chen, S-Z Lin
BACKGROUND: With the continuous improvement of liver transplantation technology, the survival rate of liver transplantation has been improved, but recurrent or de novo malignancy remains one of the major factors affecting the long-term survival of liver transplant recipients. CASE REPORT: A 45-year-old Chinese man had a plastic biliary stent placed on account of biliary anastomotic stenosis after 3 years of piggyback liver transplantation. He came to our hospital because of recurrent fever and jaundice for 2 weeks, and his carcinoembryonic antigen-199 had increased...
April 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29629064/plantago-major-in-traditional-persian-medicine-and-modern-phytotherapy-a-narrative-review
#9
REVIEW
Younes Najafian, Shokouh Sadat Hamedi, Masoumeh Kaboli Farshchi, Zohre Feyzabadi
Plantago major has been used widely since ancient times, to manage a wide range of diseases including constipation, coughs and wounds. The aim of this study is to review the traditional application, botanical characterization, pharmacological activities, phytochemistry effects and toxicity of Plantago major. In this review study, medicinal properties of Plantago major are collected from credible pharmacopeias, textbooks of traditional Persian medicine (TPM) belonging to the 10-18th century AD, such as "The Canon of Medicine", "Makhzan-Al- Advia" and so on...
February 2018: Electronic Physician
https://www.readbyqxmd.com/read/29626695/multi-functional-electrospun-antibacterial-core-shell-nanofibrous-membranes-for-prolonged-prevention-of-post-surgical-tendon-adhesion-and-inflammation
#10
K T Shalumon, Chialin Sheu, Chih-Hao Chen, Shih-Heng Chen, Gils Jose, Chang-Yi Kuo, Jyh-Ping Chen
The possibility of endowing an electrospun anti-adhesive barrier membrane with multi-functionality, such as lubrication, prevention of fibroblast attachment and anti-infection and anti-inflammation properties, is highly desirable for the management of post-surgical tendon adhesion. To this end, we fabricated core-shell nanofibrous membranes (CSNMs) with embedded silver nanoparticles (Ag NPs) in the poly(ethylene glycol) (PEG)/poly(caprolactone) (PCL) shell and hyaluronic acid (HA)/ibuprofen in the core. HA imparted a lubrication effect for smooth tendon gliding and reduced fibroblast attachment, while Ag NPs and ibuprofen functioned as anti-infection and anti-inflammation agents, respectively...
April 4, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29624207/large-differences-in-neonatal-drug-use-between-nicus-are-common-practice-time-for-consensus
#11
R B Flint, F van Beek, P Andriessen, L Zimmermann, K D Liem, I K M Reiss, R de Groot, D Tibboel, D M Burger, S H P Simons
INTRODUCTION: Evidence for drug use in newborn is sparse, which may cause large differences in drug prescriptions. We aimed to investigate the differences between neonatal intensive care units (NICUs) in the Netherlands in currently prescribed drugs. MATERIALS AND METHODS: This multicenter study included neonates admitted during 12 months to four different NICUs. Drugs were classified in accordance with the Anatomical Therapeutic Chemical (ATC) classification system and assessed for on/off-label status in relation to neonatal age...
April 6, 2018: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29620478/the-rise-of-hospitalists-an-opportunity-for-infectious-diseases-investigators
#12
Matthew W McCarthy, Thomas J Walsh
Despite the essential role played by infectious diseases specialists in patient care, public health, cost-containment, and biomedical research, the field has a substantially higher percentage of vacant positions than other medicine sub-specialties. While much has been written about what this disturbing trend means for patient care, comparatively little attention has been focused on the dire implications for clinical research and the development of novel anti-infective therapy. Areas covered: We examine the ways that hospitalists and infectious disease specialists might collaborate to study emerging diagnostic platforms, novel antimicrobial agents, and strengthen antimicrobial stewardship programs to improve the delivery of high-quality health care...
April 11, 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29614617/-transformation-of-endogenous-reactive-oxygen-species-participates-into-bacterial-antibiotic-resistance
#13
X Li, Y L Zhong, Y J Feng
A growing body of diversified antibiotic resistances raises a significant challenge to anti-infection clinical therapeutics. The emergence of superbugs carrying MCR-1/2 or NDM-1 determinants underlines the importance and urgency in elucidation of molecular mechanisms shared by antibiotic resistances. It is aware that different classes of bactericidal antibiotics consistently stimulate the production of deleterious reactive oxygen species (ROS), which are accompanied with metabolic disturbance. The different destinations of ROS determine its consequence on bacterial fate...
April 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29614573/-eperythrozoonosis-complicated-with-hemophagocytic-syndrome-report-of-four-cases-and-review-of-literature
#14
J G Li, D Zhang, Z X Zhou, S N Li, M Kang, J M Lai
Objective: To analyze the clinical characteristics of eperythrozoonosis complicated with hemophagocytic syndrome (HPS) in 4 children. Methods: Four patients diagnosed with eperythrozoonosis complicated with HPS in the Children's Hospital Affiliated Capital Institute of Pediatrics during the period from June 2014 to July 2016 were enrolled. The clinical manifestations, laboratory examination data and therapeutic strategies were analyzed. A literature search (search terms included 'eperythrozoonosis' and 'hemophagocytic syndrome') was conducted using CNKI, Wanfang database, Chinese biomedical literature database and PubMed to include recently published studies (searched from the database establishment to January 2017)...
April 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29611819/protoporphyrin-ix-conjugated-cellulose-nanofibers-that-exhibit-high-antibacterial-photodynamic-inactivation-efficacy
#15
Jiancheng Dong, Reza A Ghiladi, Qingqing Wang, Yibing Cai, Qufu Wei
Towards the development of anti-infective nanoscale materials employing a photodynamic mechanism of action, we report the synthesis, physical properties (SEM, mechanical strength, water contact angle), spectroscopic characterization (infrared, Raman, DRUV), and evaluation of antibacterial efficacy of porphyrin-conjugated regenerated cellulose nanofibers, termed RC-TETA-PPIX-Zn. Cellulose acetate was electrospun to produce nanofibers, thermally treated to enhance mechanical strength, and finally hydrolyzed to produce regenerated cellulose (RC) nanofibers that possessed a high surface area and nanofibrous structure...
April 3, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29611476/antimicrobial-peptides-phylogenic-sources-and-biological-activities-first-of-two-parts
#16
Thea Magrone, Matteo Antonio Russo, Emilio Jirillo
Antimicrobial peptides (AMPs) are phylogenetically ancient substances released by living organisms for self protection against a broad variety of microbes. Moreover, AMPs are endowed with immune modulatory activities, linking innate and adaptive immunity together. Lantibiotics are AMPs of bacterial origin currently investigated for the generation of a new class of anti-infective compounds, owing to the phenomenon of antibiotic resistance against a broad variety of bacteria. Also, plants and marine AMPs are screened as novel drugs against human pathogens...
April 3, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29611447/investigational-drugs-for-the-treatment-of-infections-caused-by-multidrug-resistant-gram-negative-bacteria
#17
Lindsay M Avery, David P Nicolau
Infections caused by multidrug-resistant Gram-negative bacteria (MDR-GNB) are associated with significant mortality and costs. New drugs in development to combat these difficult-to-treat infections primarily target carbapenem-resistant Enterobacteriaceae, MDR Pseudomonas aeruginosa, and MDR Acinetobacter baumannii. Areas Covered: The authors summarize in vitro and in vivo efficacy studies, as well as available clinical trial findings, for new agents in development for treatment of infection caused by MDR-GNB...
April 3, 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29609923/evaluation-on-clinical-efficacy-of-fuzheng-jiedu-huayu-decoction-combined-with-antibiotics-in-the-treatment-of-pneumonia-in-the-elderly-a-multi-center-double-blind-parallel-randomized-controlled-trial
#18
Hongri Xu, Meng Li, Chengxiang Wang, Renyi Yin, Jie Ma, Mingzhe Wang, Quan Ming Tan, Liangduo Jiang, Miao Cheng, Xianhai Chen, Lishan Zhang, Huiping Su, Ruifu Hao, Yang Jiao, Caihua Wang, Hanlin Wei, Cuiling Feng, Hui Luo, Chuanyun Ren, Shaozhong Zhou, Shengxian Wu, Pingan Zhou
OBJECTIVE: To evaluate the efficacy and safety of Fuzheng Jiedu Huayu Decoction (FJHD) in treating pneumonia in the elderly. METHODS: Adopting a multi-center, double-blind, parallel, randomized controlled trial, 284 elderly pneumonia patients were enrolled and randomly allocated to the standard treatment with FJHD (treatment group, TG) and the standard treatment with placebo group (control group, CG). Efficacy and safety was evaluated through mortality rate, curative rate, symptom improvement, chest X-ray (CXR) lesion absorption, arterial blood gas (ABG), peripheral blood leukocyte count (PBLC) and adverse events...
April 2018: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/29609281/-advances-in-the-research-of-antibacterial-properties-of-silver-ion-and-its-application-in-wound-treatment
#19
X R Su, Y Y Xue, Q Li
Nowadays, antibacterial products containing silver ion are widely used in clinical wound treatment. The concentration of silver ion in products, pH value, and other factors may affect the release of silver ion and its antibacterial effects. In the treatment of clinical wound, silver ion product plays a good role in anti-infection, promoting healing and reducing medical expenses. In this paper, the related applications of silver ion products in wound surface are analyzed, and the antibacterial properties of silver ion and its therapeutic effects in wound treatment are summarized...
March 20, 2018: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29609267/-effects-of-sural-nerve-nutrition-vess-els-supported-flap-for-reconstruction-of-distal-lower-leg-and-ankle-soft-tissue-defects
#20
D Ding, F Zhao, Y L Huang, X L Li, F Gong, Z C Yao, B W Zhang, Z Y Yang, J M Ma, J Shen, P Wen
Objective: To observe the effects of sural nerve nutrition vessels-supported flap for reconstruction of distal lower leg and ankle soft tissue defects. Methods: From June 2014 to June 2017, 37 patients with calf distal and ankle soft tissue defect were repaired with sural nerve nutrition vessels-supported flap, of them 12 cases with calf distal soft tissue defect wounds and 25 cases with ankle soft tissue defect wounds.The scope of flaps was 9 cm×4 cm to 18 cm×9 cm, anti-infection, anti-freezing and dressing treatments were carried out after operation...
March 20, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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