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https://www.readbyqxmd.com/read/29046011/-biomarkers-in-diagnosis-treatment-and-prognosis-of-infectious-lung-diseases
#1
M Unnewehr, M Kolditz, W Windisch, B Schaaf
Biomarkers play an important role in the management of infectious pulmonary diseases, even though there is only limited evidence that biomarker-guided therapies are superior to clinical strategies.Well-established indications for the use of biomarkers are the guidance of the duration of antibiotic therapy in community-acquired pneumonia (CAP) by PCT, the decision against the use of antibiotics by CRP or PCT in ambulatory settings, and the evaluation of CAP treatment by CRP or PCT kinetics.In the prognostic assessment of CAP, the standard biomarkers of acute organ dysfunction should be given priority, e...
October 18, 2017: Pneumologie
https://www.readbyqxmd.com/read/29045929/deciphering-the-complexation-process-of-a-fluoroquinolone-antibiotic-levofloxacin-with-bovine-serum-albumin-in-the-presence-of-additives
#2
Amandeep Kaur, Imran Ahmd Khan, Parampaul Kaur Banipal, Tarlok Singh Banipal
The current work aims to explore the thermodynamic and conformational aspects for the binding of fluoroquinolone antibacterial drug, levofloxacin (LFC), with bovine serum albumin (BSA) using calorimetric, spectroscopic (UV-visible, fluorescence, circular dichroism, and (1)H NMR), dynamic light scattering (DLS) and computational methods (molecular docking). The binding of LFC with BSA at two sequential sites with higher affinity (~10(3)M(-1)) at the first site has been explored by calorimetry whereas the binding at a single site with affinity of the order of ~10(4)M(-1) has been observed from fluorescence spectroscopy...
October 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29045887/polymorphism-intermolecular-interactions-and-spectroscopic-properties-in-crystal-structures-of-sulfonamides
#3
C Ignacio Sainz-Díaz, Misaela Francisco-Márquez, Catalina Soriano-Correa
The antibiotics family of sulfonamides has been used worldwide intensively in human therapeutics and farm livestock during decades. Intermolecular interactions of these sulfamides are important to understand their bioactivity and biodegradation. These interactions are also responsible for their supramolecular structures. The intermolecular interactions in the crystal polymorphs of the sulfonamides, sulfamethoxypyridazine and sulfamethoxydiazine, as models of sulfonamides, have been studied by using quantum mechanical calculations...
October 15, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29045862/the-two-state-prehensile-tail-of-the-antibacterial-toxin-colicin-n
#4
Christopher L Johnson, Alexandra S Solovyova, Olli Hecht, Colin Macdonald, Helen Waller, J Günter Grossmann, Geoffrey R Moore, Jeremy H Lakey
Intrinsically disordered regions within proteins are critical elements in many biomolecular interactions and signaling pathways. Antibacterial toxins of the colicin family, which could provide new antibiotic functions against resistant bacteria, contain disordered N-terminal translocation domains (T-domains) that are essential for receptor binding and the penetration of the Escherichia coli outer membrane. Here we investigate the conformational behavior of the T-domain of colicin N (ColN-T) to understand why such domains are widespread in toxins that target Gram-negative bacteria...
October 17, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/29045813/antimicrobial-resistance-virulence-genes-and-genetic-relatedness-of-salmonella-enterica-serotype-enteritidis-isolates-recovered-from-human-gastroenteritis-in-tehran-iran
#5
Fatemeh Fardsanei, Mohammad Mehdi Soltan Dallal, Masoumeh Douraghi, Hamed Memariani, Bita Bakhshi, Taghi Zahraei Salehi, Farhad Nikkhahi
OBJECTIVES: Salmonella enterica serotype Enteritidis (S. Enteritidis) is a major serotype associated with human salmonellosis. The main objective of this study was to determine antibiotic susceptibility patterns and the presence of virulence-associated genes among S. Enteritidis strains isolated from patients with gastroenteritis in Tehran, Iran. METHODS: Over a period of 14 months between May 2015 to July 2016, 44S. Enteritidis isolates recovered from clinical sources were characterised for antimicrobial susceptibility and virulence genes...
October 15, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29045662/resistance-monitoring-of-four-insecticides-and-a-description-of-an-artificial-diet-incorporation-method-for-chilo-suppressalis-lepidoptera-crambidae
#6
Huang Shuijin, Chen Qiong, Qin Wenjing, Sun Yang, Qin Houguo, John Trumble
Chilo suppressalis (Walker; Lepidoptera: Crambidae) is one of the most damaging rice pests in China. Insecticides play a major role in its management. We describe how we monitored the resistance of C. suppressalis to four insecticides in seven field populations from Jiangxi, Hubei, and Hunan Provinces, China, in 2014-2016. The topical application method for resistance monitoring was suitable for triazophos, monosultap, and abamectin. The conventional rice seedling dipping method proved ineffective for testing chlorantraniliprole so the new artificial diet incorporation method was substituted...
October 16, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29045261/incidence-and-outcomes-of-central-venous-catheter-related-blood-stream-infection-in-patients-with-inflammatory-bowel-disease-in-routine-clinical-practice-setting
#7
Wataru Shibata, Masako Sohara, Rongrong Wu, Kota Kobayashi, Shin Yagi, Katsuki Yaguchi, Yuki Iizuka, Miho Iwasa, Hitomi Nakahata, Tadashi Yamaguchi, Hiromi Matsumoto, Mao Okada, Kenshiro Taniguchi, Aki Hayashi, Shin Inazawa, Naoko Inagaki, Tomohiko Sasaki, Ryonho Koh, Hiroto Kinoshita, Masafumi Nishio, Tsuyoshi Ogashiwa, Ai Ookawara, Eiji Miyajima, Mari Oba, Hiroki Ohge, Shin Maeda, Hideaki Kimura, Reiko Kunisaki
BACKGROUND: Patients with inflammatory bowel disease (IBD) occasionally require central venous catheter (CVC) placement to support a therapeutic plan. Given that CVC can predispose patients to infection, this investigation was undertaken to assess the incidence, risk factors, and outcomes of CVC-related blood stream infection (CRBSI) in patients with IBD during routine clinical practice. METHODS: Data were compiled using retrospective chart reviews of 1367 patients treated at our IBD center between 2007 and 2012 during routine clinical practice...
November 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29045123/polymyxin-b3-tobramycin-hybrids-with-pseudomonas-aeruginosa-selective-antibacterial-activity-and-strong-potentiation-of-rifampicin-minocycline-and-vancomycin
#8
Ronald Domalaon, Xuan Yang, Yinfeng Lyu, George G Zhanel, Frank M Schweizer
There is an urgent need to develop novel antibacterial agents able to eradicate drug-resistant Gram-negative pathogens such as Pseudomonas aeruginosa. Antimicrobial hybrids have emerged as a promising strategy to combat bacterial resistance, as a stand-alone drug but also as an adjuvant in combination with existing antibiotics. Herein, we report for the first time the synthesis and biological evaluation of polymyxin-aminoglycoside heterodimers composing of polymyxin B3 covalently linked to tobramycin via an aliphatic hydrocarbon linker...
October 18, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29045025/do-pre-operative-oral-antibiotics-increase-clostridium-difficile-infection-rates-an-analysis-of-13-959-colectomy-patients
#9
Muralidharan Parthasarathy, David Bowers, Thomas Groot-Wassink
AIM: The aim of this study was to determine whether or not preoperative oral antibiotic preparation (POAP) increases the rate of Clostridium difficile colitis (CDC) in patients undergoing colectomy. METHOD: In 2015, data for colectomies had been collected prospectively and recorded in the targeted colectomy option of the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP). This was available for retrospective analysis. Data available for analysis included elective and emergency status, POAP, surgical approach, primary anastomosis and CDC status...
October 16, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/29044790/acute-appendicitis
#10
REVIEW
Mark D Stringer
Acute appendicitis is the most common reason for abdominal surgery in children. Luminal obstruction of the appendix progresses to suppurative inflammation and perforation, which causes generalised peritonitis or an appendix mass/abscess. Classical features include periumbilical pain that migrates to the right iliac fossa, anorexia, fever, and tenderness and guarding in the right iliac fossa. Atypical presentations are particularly common in preschool children. A clinical diagnosis is possible in most cases, after a period of active observation if necessary; inflammatory markers and an ultrasound scan are useful investigations when the diagnosis is uncertain...
October 17, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29044738/overview-of-mechanisms-of-antibiotic-resistance-in-pseudomonas-aeruginosa-an-ocular-perspective
#11
REVIEW
Dinesh Subedi, Ajay Kumar Vijay, Mark Willcox
Treatment of Pseudomonas aeruginosa eye infections often becomes a challenge due to the ability of this bacterium to be resistant to antibiotics via intrinsic and acquired mechanisms. Transfer of resistance due to interchangeable genetic elements is an important mechanism for the rapid transfer of antibiotic resistance in this pathogen. As a result, drug-resistant strains are becoming increasingly prevalent worldwide. This review systematically analyses data from recent publications to describe the global prevalence and antibiotic sensitivity of ocular P...
October 18, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29044643/fidaxomicin-versus-vancomycin-as-a-first-line-treatment-for-clostridium-difficile-associated-diarrhea-cdad-in-specific-patient-populations-a-pharmacoeconomic-evaluation
#12
Kelly R Reveles, Jennifer L Backo, Frank A Corvino, Marko Zivkovic, Kelly C Broderick
OBJECTIVES: The reduction in recurrent Clostridium difficile-associated diarrhea (CDAD) with fidaxomicin therapy may reduce hospital readmissions and lead to lower overall CDAD costs. However, studies assessing the cost-effectiveness of fidaxomicin as first-line therapy from the United States (US) hospital perspective are lacking. This study evaluated the costs associated with utilizing fidaxomicin or vancomycin as a first-line therapy for CDAD in specific patient populations from a US hospital perspective...
October 17, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/29044373/antimicrobial-resistance-a-one-health-perspective
#13
Laura H Kahn
Introduction: Worsening antimicrobial resistance (AMR) threatens the practice of modern human and veterinary medicine. For decades, medicine and agriculture have blamed each other for the rise of resistant microbes. Widespread use and misuse of antibiotics in both medicine and agriculture have increased the prevalence and expression of resistance genes. VRE: The rise of vancomycin-resistant Enterococcus faecium (VRE) in the European Union (EU) led to the ban of avoparcin, an antibiotic that is chemically related to vancomycin...
June 1, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29044341/the-use-of-antimicrobials-in-septic-patients-with-acute-kidney-injury
#14
Fernanda Moreira de Freitas, Welder Zamoner, Durval Sampaio de Souza Garms, Mariele Gobo de Oliveira, André Luis Balbi, Daniela Ponce
Sepsis is the most common cause of death in critically ill patients and it may be associated with multiorgan failure, including acute kidney injury (AKI). This situation can require acute renal support and increase mortality. Therefore, it is essential to administrate antimicrobials in dosis to achieve adequate serum levels, preventing overdosis and drug toxicity or underdosing and risk for resistance to antibiotics and higher mortality. To date, there aren't validated guidelines on antibiotic dosis adjustment in septic patients with AKI and the recommendations are extrapolated from studies conducted in non-critical patients with chronic kidney disease in end stage receiving chronic renal replacement therapy...
July 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29044318/antibiotic-activity-of-plectranthus-ornatus-codd-a-traditional-medicinal-plant
#15
Fernanda R Nascimento, Kamylla R S Albuquerque, Marcos R Oliveira, Virginia R Pizziolo, Beatriz G Brasileiro, Gaspar Diaz, Marisa A N Diaz
The dichloromethane extract of Plectranthus ornatus Codd., a tradicional medicinal plant, showed antibiotic activity with minimum inhibitory concentration (MIC) values of 0.4 mg.mL-1 and 100 percent of biofilm inhibition against Staphylococcus aureus strains isolated from animals with mastitis infections. Based on these antibacterial activities, in addition to ethnopharmacological reports from healing men and farmers in Brazil, an herbal soap was produced from this active extract and was tested both in vitro and in vivo...
October 16, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29044054/role-of-intravitreal-intracameral-antibiotics-to-prevent-traumatic-endophthalmitis-meta-analysis
#16
REVIEW
Thanigasalam Thevi, Adinegara Lutfi Abas
Traumatic endophthalmitis is a devastating condition that can occur following an open globe injury and result in loss of vision. The use of prophylactic antibiotics is empirical as most surgeons fear complications associated with the same. No systematic review has been performed in English on the role of intravitreal/intracameral antibiotics in preventing traumatic endophthalmitis. We searched for randomized controlled trials and controlled clinical trials comparing intracameral/intravitreal antibiotics with placebos on PubMed, Google Scholar, Science Direct, and Cochrane Library using keywords open globe/trauma/penetrating/perforating injuries endophthalmitis...
October 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29044014/-anaphylaxis-and-allergic-reactions-during-surgery-and-medical-procedures
#17
Blas J Larrauri, María Gabriela Torre, Eloísa Malbrán, María Cecilia Juri, Diego S Fernández Romero, Alejandro Malbrán
Anaphylaxis during anesthesia is an unpredictable, severe, and rare reaction. It has an incidence of 1/10 000 to 1/20 000 surgeries. In most series, the responsible drugs include neuromuscular blocking agents, latex, or antibiotics. The frequency and etiology of systemic allergic reactions in other medical procedures are largely unknown. The identification of responsible drugs of anaphylaxis is a complex task, requiring testing of all medications and substances used during surgery. We describe our experience in a retrospective study of 15 patients...
2017: Medicina
https://www.readbyqxmd.com/read/29044002/irrational-antibiotic-prescribing-practice-among-children-in-critical-care-of-tertiary-hospitals
#18
Mirza Tasawer Baig, Ali Akbar Sial, Ambreen Huma, Maryam Ahmed, Uzma Shahid, Nayel Syed
This study assessed the prescribing pattern of irrational use of antibiotic among children under age of 12 years in public and private sector hospitals in Pakistan. The prospective clinical evaluation of drug utilization pattern of antimicrobials from Patient Bedside File (PBF) of in-patients and Culture Sensitivity Test (CST) reports were evaluated to determine the antibiotic resistance. Two indicators recorded to assess antibiotic prescribing were; dose of prescribed antibiotic (low-dose, rational and high -dose) and Indication (valid or invalid)...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29043783/marine-mammal-microbiota-yields-novel-antibiotic-with-potent-activity-against-clostridium-difficile
#19
Jessica L Ochoa, Laura M Sanchez, Byoung-Mo Koo, Jennifer S Doherty, Manohary Rajendram, Kerwyn Casey Huang, Carol A Gross, Roger G Linington
The recent explosion of research on the microbiota has highlighted the important interplay between commensal microorganisms and the health of their cognate hosts. Metabolites isolated from commensal bacteria have been demonstrated to possess a range of antimicrobial activities, and it is widely believed that some of these metabolites modulate host behavior, affecting predisposition to disease and pathogen invasion. Our access to the local marine mammal stranding network and previous successes in mining the fish microbiota poised us to test the hypothesis that the marine mammal microbiota is a novel source of commensal bacteria-produced bioactive metabolites...
October 18, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29043494/influence-of-proline-substitution-on-the-bioactivity-of-mammalian-derived-antimicrobial-peptide-nk-2
#20
Jiexi Yan, Xiaolei Liang, Chang Liu, Yuemei Cheng, Lanxia Zhou, Kairong Wang, Li Zhao
Multidrug-resistant bacteria are emerging as a global threat, making the search for alternative compounds urgent. Antimicrobial peptides (AMPs) became a promising hotspot due to their distinct action mechanism and possibility to be used as an alternative or complement to traditional antibiotics. However, gaining a better understanding about the relationship between antimicrobial peptides structure and its bioactivity is crucial for the development of next generation of antimicrobial agents. NK-2, derived from mammalian protein NK-lysin, has potent antitumor and bactericidal abilities...
October 17, 2017: Probiotics and Antimicrobial Proteins
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