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https://www.readbyqxmd.com/read/28737160/health-and-environmental-risk-assessment-project-for-bottlenose-dolphins-tursiops-truncatus-from-the-southeastern-usa-ii-environmental-aspects
#1
REVIEW
John S Reif, Adam M Schaefer, Gregory D Bossart, Patricia A Fair
Bottlenose dolphins Tursiops truncatus are the most common apex predators found in coastal and estuarine ecosystems along the southeastern coast of the USA, where these animals are exposed to multiple chemical pollutants and microbial agents. In this review, we summarize the results of investigations of environmental exposures evaluated in 360 free-ranging dolphins between 2003 and 2015. Bottlenose dolphins inhabiting the Indian River Lagoon, Florida (IRL, n = 246), and coastal waters of Charleston, South Carolina (CHS, n = 114), were captured, given comprehensive health examinations, and released as part of a multidisciplinary and multi-institutional study of individual and population health...
July 24, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28736974/topical-sevoflurane-for-chronic-venous-ulcers-infected-by-multi-drug-resistant-organisms
#2
Adrián Imbernón-Moya, Francisco Javier Ortiz-de Frutos, Mónica Sanjuan-Alvarez, Isabel Portero-Sanchez, Raúl Merinero-Palomares, Victoria Alcazar
Several anaesthetic drugs have demonstrated antibacterial properties in vitro. Anaesthetics can primarily affect the cell wall of both susceptible and multi-resistant bacteria. They may also have a synergistic effect with conventional antibiotics through an unknown mechanism. We present three cases of a chronic venous ulcer infected by multi-resistant bacteria refractory to conventional systemic antibiotics, including Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA). Treatment with topical sevoflurane was performed for 1 month without systemic antibiotics...
July 23, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28724226/application-of-a-crustacean-bioassay-to-evaluate-a-multi-contaminated-metal-pah-pcb-harbor-sediment-before-and-after-electrokinetic-remediation-using-eco-friendly-enhancing-agents
#3
Y Tian, C Boulangé-Lecomte, A Benamar, N Giusti-Petrucciani, A Duflot, S Olivier, C Frederick, J Forget-Leray, F Portet-Koltalo
Electrokinetic (EK) remediation can be a suitable technology for treating contaminated dredged harbor sediment, stored on terrestrial disposal sites. Citric acid (CA) and biosurfactants (rhamnolipids and saponin) were chosen as enhancing agents for simultaneous metal (Cd, Cr, Cu, Pb, Zn) and PAH/PCB removal by EK because of their potential low toxicity with a view to site restoration. Three EK runs were performed using a periodic voltage (1Vcm(-1)) and various concentrations of agents. The best combination of CA (0...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28720429/stable-isotope-based-flux-studies-in-nonalcoholic-fatty-liver-disease
#4
REVIEW
Arthur McCullough, Stephen Previs, Takhar Kasumov
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease and is associated with the worldwide epidemics of obesity, diabetes and cardiovascular diseases. NAFLD ranges from benign fat accumulation in the liver (steatosis) to non-alcoholic steatohepatitis (NASH), and cirrhosis which can progress to hepatocellular carcinoma and liver failure. Mass spectrometry and magnetic resonance spectroscopy-coupled stable isotope-based flux studies provide new insights into the understanding of NAFLD pathogenesis and the disease progression...
July 15, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28697755/spread-of-resistant-gram-negatives-in-a-sri-lankan-intensive-care-unit
#5
Kavinda Tissera, Veranja Liyanapathirana, Nilanthi Dissanayake, Vasanthi Pinto, Asela Ekanayake, Manjula Tennakoon, Dinuka Adasooriya, Dulmini Nanayakkara
BACKGROUND: Infections with multi drug resistant (MDR) organisms are a major problem in intensive care units (ICUs). Proper infection control procedures are mandatory to combat the spread of resistant organisms within ICUs. Well stablished surveillance programmes will enhance the adherence of the staff to infection control protocols. The study was conducted to assess the feasibility of using basic molecular typing methods and routine hospital data for laboratory surveillance of resistance organisms in resource limited settings...
July 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28694178/medicinal-plants-used-in-the-treatment-of-tuberculosis-ethnobotanical-and-ethnopharmacological-approaches
#6
REVIEW
Javad Sharifi-Rad, Bahare Salehi, Zorica Z Stojanović-Radić, Patrick Valere Tsouh Fokou, Marzieh Sharifi-Rad, Gail B Mahady, Majid Sharifi-Rad, Mohammad-Reza Masjedi, Temitope O Lawal, Seyed Abdulmajid Ayatollahi, Javid Masjedi, Razieh Sharifi-Rad, William N Setzer, Mehdi Sharifi-Rad, Farzad Kobarfard, Atta-Ur Rahman, Muhammad Iqbal Choudhary, Athar Ata, Marcello Iriti
Tuberculosis is a highly infectious disease declared a global health emergency by the World Health Organization, with approximately one third of the world's population being latently infected with Mycobacterium tuberculosis. Tuberculosis treatment consists in an intensive phase and a continuation phase. Unfortunately, the appearance of multi drug-resistant tuberculosis, mainly due to low adherence to prescribed therapies or inefficient healthcare structures, requires at least 20months of treatment with second-line, more toxic and less efficient drugs, i...
July 8, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28685693/multi-targeted-anticancer-agents
#7
Wei Zheng, Yao Zhao, Qun Luo, Yang Zhang, Kui Wu, Fuyi Wang
There is great demand for the development of novel anticancer drugs, due to the increasing morbidity and high mortality of cancer. To date, chemotherapy still plays a central role in the clinical treatment of cancer, but this role is being reduced by targeted therapies. Since cancer is a complicated and multiple genes involved disease, drugs that act at multiple targets can enhance efficacy and lower drug resistance, and are thought to be the future of novel anticancer drug development. In this paper, we discuss the recent development of "single molecule, multi-target" anticancer agents that combine two or more pharmacophores in a single molecule, including organic multi-targeted anticancer agents and metal based complexes such as platinum, ruthenium, iridium and rhodium complexes...
July 7, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28685681/exploiting-cancer-metal-metabolism-using-anti-cancer-metal-binding-agents
#8
Angelica Merlot, Danuta Kalinowski, Zaklina Kovacevic, Patric Jansson, Sumit Sahni, Michael Huang, Darius Lane, Hiu Lok, Des Richardson
Metals are vital cellular elements necessary for multiple indispensable biological processes of living organisms, including energy transduction and cell proliferation. Interestingly, alterations in metal levels and also changes in the expression of proteins involved in metal metabolism have been demonstrated in a variety of cancers. Considering this and the important role of metals for cell growth, the development of drugs that sequester metals have become an attractive target for the development of novel anti-cancer agents...
July 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28679535/small-molecule-based-inhibition-of-mek1-2-proteins-dampens-inflammatory-responses-to-malaria-reduces-parasite-load-and-mitigates-pathogenic-outcomes
#9
Xianzhu Wu, Kiran K Dayanand, Ramesh P Thylur, Christopher C Norbury, D Channe Gowda
Malaria infections cause several systemic and severe single or multi-organ pathologies, killing hundreds of thousands of people annually. Considering the existing widespread resistance of malaria parasites to antiparasitic drugs and their high propensity to develop drug resistance, alternative strategies are required to manage malaria infections. Since malaria is a host immune response-driven disease, one approach is based on gaining a detailed understanding of the molecular and cellular processes that modulate malaria-induced innate and adaptive immune responses...
July 5, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28672173/prevalence-of-verocytotoxigenic-escherichia-coli-strains-isolated-from-raw-beef-in-southern-italy
#10
Gaia Nobili, Ilenia Franconieri, Gianfranco La Bella, Maria Grazia Basanisi, Giovanna La Salandra
Verocytotoxin (VT)-producing Escherichia coli (VTEC) are a significant foodborne public health hazard, where most human infections are associated with six serogroups (O157, O26, O103, O145, O111 and O104). VTEC was the fourth most commonly reported zoonosis in the EU in 2015, with 5901 confirmed human cases. Ruminant animals, including cattle, are a major reservoir of VTEC. The consumption of VTEC-contaminated animal-derived foodstuffs, especially undercooked ground beef, is an important transmission route...
June 28, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28665944/molecular-mechanics-of-staphylococcus-aureus-adhesin-cna-and-the-inhibition-of-bacterial-adhesion-by-stretching-collagen
#11
Ali Madani, Kiavash Garakani, Mohammad R K Mofrad
Bacterial adhesion to collagen, the most abundant protein in humans, is a critical step in the initiation and persistence of numerous bacterial infections. In this study, we explore the collagen binding mechanism of the multi-modular cell wall anchored collagen adhesin (CNA) in Staphylococcus aureus and examine how applied mechanical forces can modulate adhesion ability. The common structural-functional elements and domain organization of CNA are present across over 50 genera of bacteria. Through the use of molecular dynamics models and normal mode analysis, we shed light on the CNA's structural and conformational dynamics and its interactions with collagen that lead to collagen binding...
2017: PloS One
https://www.readbyqxmd.com/read/28663673/spontaneous-bacterial-peritonitis-by-burkholderia-cepacia-complex-a-rare-difficult-to-treat-infection-in-decompensated-cirrhotic-patients
#12
Sunil Taneja, Pramod Kumar, Vikas Gautam, Ajay Duseja, Virendra Singh, Radha K Dhiman, Yogesh Chawla
INTRODUCTION: Burkholderia cepacia complex (Bcc) is non-fermenting Gram-negative bacillus and has been rarely reported to cause spontaneous bacterial peritonitis (SBP) in decompensated cirrhosis. OBJECTIVE: This study was done to evaluate the clinical presentation of cirrhotic patients with SBP due to Bcc and to determine its impact on clinical outcome. METHODS: This is a retrospective, observational study conducted during the period from 1st January 2013 through 31st March 2015...
June 2017: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/28659548/pathogenicity-of-enterococci
#13
Yasuyoshi Ike
Enterococci belong to the group of lactic acid bacteria (LAB), and inhabit the gastrointestinal tracts of a wide variety of animals from insects and to human, and the commensal organism in humans and animals. The commensal/probiotic role of enterococci has evolved through thousands of years in mutual coexistence. Enterococcus have many favorable traits that have been appreciated in food fermentation and preservation, and many serve as probiotics to promote health. While lactobacillus have been shown to confer numerous benefits on and often regarded as health bringing organisms, enterococci have become more recognized as emerging human pathogens in recent years...
2017: Nihon Saikingaku Zasshi. Japanese Journal of Bacteriology
https://www.readbyqxmd.com/read/28657373/extended-infusion-of-beta-lactam-antibiotics-optimizing-therapy-in-critically-ill-patients-in-the-era-of-antimicrobial-resistance
#14
Nesrine A Rizk, Zeina A Kanafani, Hussam Z Tabaja, Souha S Kanj
Beta-lactams are at the cornerstone of therapy in critical care settings, but their clinical efficacy is challenged by the rise in bacterial resistance. Infections with multi-drug resistant organisms are frequent in intensive care units, posing significant therapeutic challenges. The problem is compounded by a dearth in the development of new antibiotics. In addition, critically-ill patients have unique physiologic characteristics that alter the drugs pharmacokinetics and pharmacodynamics. Areas covered: The prolonged infusion of antibiotics (extended infusion [EI] and continuous infusion [CI]) has been the focus of research in the last decade...
July 3, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28655372/antibiotic-stewardship-new-frontier-familiar-journey
#15
Caren McHenry Martin
Recent changes in regulations by the Centers for Medicare & Medicaid Services require long-term care facilities to meet specific requirements on antibiotic stewardship, promoting the appropriate use of antibiotics and antimicrobials. The goal is to improve patient outcomes and decrease the spread of infections caused by multi-drug-resistant organisms. Consultant pharmacists can help facility personnel implement policies and procedures for effective antibiotic stewardship, assist prescribers and facility staff in understanding how to use the facility's antibiogram, find appropriate resources, and provide facility personnel with feedback on their antimicrobial stewardship efforts...
May 1, 2017: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28653923/kitchen-phytochemicals-from-allium-cepa-their-role-in-multidrug-resistance
#16
Gunpreet Kaur, Vikas Gupta, Ajay Francis Christopher, Renu Bansal, Parveen Bansal
Bacterial resistance to antibiotics is increasingly becoming a concern to public health. Current antibiotics have failed to bring desirable results to many bacterial infections due to multi-resistant strains. So, concerted efforts are being made to curve this with the help of dietary phytohemicals. A number of dietary phytochemical are being put to trials for antimicrobial activity; however it is worthwhile to search such a part of diet that is very frequently used by major population. Keeping this view in mind an effort has been made to evaluate the antimicrobial activity of most common vegetable component Allium cepa...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28652785/prevalence-and-antibiotic-resistance-of-coagulase-negative-staphylococci-isolated-from-poultry-farms-in-three-regions-of-ghana
#17
Vivian Etsiapa Boamah, Christian Agyare, Hayford Odoi, Francis Adu, Stephen Yao Gbedema, Anders Dalsgaard
The use of antibiotics in animal production has been associated with the development and spread of antibiotic-resistant organisms including commensals. Coagulase-negative Staphylococcus (CoNS) species, which were until recently considered non-pathogenic, have been associated with opportunistic infections and high resistance to several antibiotics. This study sought to determine the prevalence, identity, and phenotypic resistance of coagulase-negative Staphylococcus spp. isolated from some selected poultry farms and farm workers in the Ashanti, Brong Ahafo, and Greater Accra regions of Ghana...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28651480/news-on-therapeutic-management-of-mdr-tuberculosis-a-literature-review
#18
Lucie Barthod, Jean-Guillaume Lopez, Christophe Curti, Charléric Bornet, Manon Roche, Marc Montana, Patrice Vanelle
In 2015, the World Health Organization registered 10.4 million people who developed tuberculosis worldwide and 480,000 new cases of multidrug-resistant tuberculosis were identified. The care of multi and extensively drug-resistant tuberculosis is based on a combination of pyrazinamide and second-line drugs. These regimens are lengthy, partially effective and poorly tolerated. The challenge is to re-evaluate the use of existing molecules and to develop new agents more effective against resistant strains with shorter treatment duration...
June 26, 2017: Journal of Chemotherapy
https://www.readbyqxmd.com/read/28648630/resolution-of-a-steroid-resistant-hypereosinophilic-immune-diathesis-with-mepolizumab-and-concomitant-amelioration-of-a-mixed-thrombotic-microangiopathy
#19
J Justin Mulvey, Cynthia Magro, Amy Chadburn
The anaphylatoxins produced by an unbridled complement cascade in atypical hemolytic uremic syndrome (aHUS) can alter the leukocyte environment in tissues and peripheral blood, causing clinically significant eosinophilia. While the membrane attack complex and C5a anaphlatoxin can be suppressed with anti-C5 biologics, the production of C3a is still capable of driving a destructive hypereosinophilic syndrome in spite of anticomplement therapy. The side-effects of glucocorticoids in treating hypereosinophilic syndrome limit their therapeutic index in long-term treatment and this behooves the use of alternative strategies...
May 2, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28648068/redox-activity-of-oxo-bridged-iridium-dimers-in-an-n-o-donor-environment-characterization-of-remarkably-stable-ir-iv-v-complexes
#20
Shashi Bhushan Sinha, Dimitar Y Shopov, Liam S Sharninghausen, Christopher J Stein, Brandon Q Mercado, David Balcells, Thomas Bondo Pedersen, Markus Reiher, Gary W Brudvig, Robert H Crabtree
Chemical and electrochemical oxidation or reduction of our recently reported Ir(IV,IV) mono-μ-oxo dimers results in the formation of fully characterized Ir(IV,V) and Ir(III,III) complexes. The Ir(IV,V) dimers are unprecedented and exhibit remarkable stability under ambient conditions. This stability and modest reduction potential of 0.99 V vs NHE is in part attributed to complete charge delocalization across both Ir centers. Trends in crystallographic bond lengths and angles shed light on the structural changes accompanying oxidation and reduction...
July 5, 2017: Journal of the American Chemical Society
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