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https://www.readbyqxmd.com/read/29470920/long-term-microevolution-of-pseudomonas-aeruginosa-differs-between-mildly-and-severely-affected-cystic-fibrosis-lungs
#1
Jens Klockgether, Nina Cramer, Sebastian Fischer, Lutz Wiehlmann, Burkhard Tümmler
RATIONALE: The chronic airway infections with Pseudomonas aeruginosa determine morbidity in most individuals with cystic fibrosis (CF). P. aeruginosa may persist for decades in CF lungs which provides the rare opportunity to study the long-term within-host evolution of a bacterial airway pathogen. OBJECTIVES: To resolve the genetic adaptation of P. aeruginosa in CF lungs from the onset of colonization until the patient's death or permanent replacement by another P...
February 22, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29465747/antibiotics-for-treating-gonorrhoea-in-pregnancy
#2
REVIEW
Gabriella Comunián-Carrasco, Guiomar E Peña-Martí, Arturo J Martí-Carvajal
BACKGROUND: Gonorrhoea is a sexually transmitted infection that is caused by Neisseria gonorrhoeae, and is a major public health challenge today. N gonorrhoeae can be transmitted from the mother's genital tract to the newborn during birth, and can cause gonococcal ophthalmia neonatorum as well as systemic neonatal infections. It can also cause endometritis and pelvic sepsis in the mother. This review updates and replaces an earlier Cochrane Review on antibiotics for treating this infectious condition...
February 21, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29465741/management-of-hardware-related-infections-after-dbs-surgery-a-cost-analysis
#3
Pim Wetzelaer, Tim Bouwens VAN DER Vlis, Mehmet Tönge, Linda Ackermans, Pieter Kubben, Silvia Evers, Ersoy Kocabiçak, Yasin Temel
AIM: One of the most distressing hardware-related complications of deep brain stimulation is an infection. These infections can be either treated with antibiotics or with removal of the infected hardware followed by reimplantation. In our experience the success of antibiotic therapy was about 50%. Here, we have investigated the costs of treating the infection with antibiotics only with the risk of surgery when unsuccessful versus immediate removal followed by reimplantation. MATERIAL AND METHODS: We calculated the costs of the different strategies through a standard costing procedure...
January 22, 2018: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29463447/novel-inhibitors-of-staphylococcus-aureus-rnpa-that-synergize-with-mupirocin
#4
Nicole Lounsbury, Tess Eidem, Jennifer Colquhoun, George Mateo, Magid Abou-Gharbia, Paul M Dunman, Wayne E Childers
We recently discovered RnpA as a promising new drug discovery target for methicillin-resistant S. aureus (MRSA). RnpA is an essential protein that is thought to perform two required cellular processes. As part of the RNA degrasome Rnpa mediates RNA degradation. In combination with rnpB it forms RNase P haloenzymes which are required for tRNA maturation. A high throughput screen identified RNPA2000 as an inhibitor of both RnpA-associated activities that displayed antibacterial activity against clinically relevant strains of S...
January 31, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29462909/antimicrobial-peptides-for-topical-treatment-of-osteomyelitis-and-implant-related-infections-study-in-the-spongy-bone
#5
Pavel Melicherčík, Ondřej Nešuta, Václav Čeřovský
We examined the benefits of short linear α-helical antimicrobial peptides (AMPs) invented in our laboratory for treating bone infection and preventing microbial biofilm formation on model implants due to causative microorganisms of osteomyelitis. For this purpose, we introduced a model of induced osteomyelitis that utilizes human femur heads obtained from the hospital after their replacement with artificial prostheses. We found that the focus of the infection set up in the spongy part of this bone treated with AMP-loaded calcium phosphate cement was eradicated much more effectively than was the focus treated with antibiotics such as vancomycin or gentamicin loaded into the same cement...
February 16, 2018: Pharmaceuticals
https://www.readbyqxmd.com/read/29455820/ductus-aneurysm-ruptured-into-the-esophagus-with-massive-bleeding
#6
Takeshi Soeda, Mai Sakashita, Takamitsu Hamada, Yuhei Saito, Yasuhito Kitakado, Nobuo Morioka
We report a patient with life-threatening hematemesis caused by the rupture of a ductus aneurysm into the esophagus, which was successfully treated by coil embolism for the esophageal fistula through the aorta and subsequent thoracic endovascular aortic replacement. Second-stage therapy was performed surgically after proactive antibiotic treatment and in consideration of the patient's improved general condition. This included debridement with drainage, aortic encasement with remnant aneurysmal wall, omentopexy, and jejunostomy...
March 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29454953/non-active-site-mutation-q123a-in-new-delhi-metallo-%C3%AE-lactamase-ndm-1-enhanced-its-enzyme-activity
#7
Abid Ali, Mohd W Azam, Asad U Khan
New Delhi metallo β-lactamase-1 is one of the carbapenemases, causing hydrolysis of almost all β-lactamase antibiotics. Seventeen different NDM variants have been reported so far, they varied in their sequences either by single or multiple amino acid substitutions. Hence, it is important to understand its structural and functional relation. In the earlier studies role of active site residues has been studied but non-active site residues has not studied in detail. Therefore, we have initiated to further comprehend its structure and function relation by mutating some of its non-active site residues...
February 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29450831/comparison-of-different-strategies-for-providing-fecal-microbiota-transplantation-to-treat-patients-with-recurrent-clostridium-difficile-infection-in-two-english-hospitals-a-review
#8
REVIEW
Simon D Goldenberg, Rahul Batra, Ian Beales, Jonathan Leith Digby-Bell, Peter Miles Irving, Lee Kellingray, Arjan Narbad, Ngozi Franslem-Elumogo
Fecal microbiota transplant (FMT) has emerged as a highly efficacious treatment for difficult cases of refractory and/or recurrent Clostridium difficile infection (CDI). There have been many well-conducted randomized controlled trials and thousands of patients reported in case series that describe success rates of approximately 90% following one or more FMT. Although the exact mechanisms of FMT have yet to be fully elucidated, replacement or restoration of a 'normal' microbiota (or at least a microbiota resembling those who have never had CDI) appears to have a positive effect on the gut dysbiosis that is thought to exist in these patients...
February 15, 2018: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/29450710/indicators-for-imaging-in-periorbital-cellulitis-secondary-to-rhinosinusitis
#9
Basel Jabarin, Ephraim Eviatar, Ofer Israel, Tal Marom, Haim Gavriel
PURPOSE: Our objective was to identify the clinical indicators for subperiosteal orbital abscess (SPOA) among patients who present with periorbital cellulitis secondary to rhinosinusitis, and to evaluate the need for performing a computerized tomography (CT) scan. METHODS: A retrospective cohort study of all patients admitted to our tertiary care emergency department between 2006 and 2014 was conducted. Included were healthy patients with acute periorbital cellulitis secondary to rhinosinusitis...
February 15, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29449171/changes-in-antimicrobial-susceptibility-of-commonly-clinically-significant-isolates-before-and-after-the-interventions-on-surgical-prophylactic-antibiotics-spas-in-shanghai
#10
Su Wang, Li-Zhong Han, Yu-Xing Ni, Yi-Bo Zhang, Qun Wang, Da-Ke Shi, Wen-Hui Li, Yi-Chen Wang, Chen-Rong Mi
Surveillances and interventions on antibiotics use have been suggested to improve serious drug-resistance worldwide. Since 2007, our hospital have proposed many measures for regulating surgical prophylactic antibiotics (carbapenems, third gen. cephalosporins, vancomycin, etc.) prescribing practices, like formulary restriction or replacement for surgical prophylactic antibiotics and timely feedback. To assess the impacts on drug-resistance after interventions, we enrolled infected patients in 2006 (pre-intervention period) and 2014 (post-intervention period) in a tertiary hospital in Shanghai...
February 12, 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29444134/effect-of-antibiotic-withdrawal-in-feed-on-chicken-gut-microbial-dynamics-immunity-growth-performance-and-prevalence-of-foodborne-pathogens
#11
Sanjay Kumar, Chongxiao Chen, Nagaraju Indugu, Gabriela Orosco Werlang, Manpreet Singh, Woo Kyun Kim, Harshavardhan Thippareddi
Development of antibiotic resistance in foodborne pathogens, Salmonella spp. and Campylobacter, is a public health concern. Public demand to reduce the use of sub-therapeutic antibiotic growth promoters (AGP) in poultry feeding has resulted in greater adoption of antibiotic-free poultry production systems. There is a need to understand the effects of AGP removal from poultry feed on gut microbiota and its impact on prevalence of foodborne pathogens. The effect of antibiotic withdrawal from poultry feed on gut microbial community, host performance and immunity, and prevalence of Salmonella and Campylobacter was evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29440136/problems-in-anticoagulation-of-a-patient-with-antibiotic-treatment-for-endocarditis-interaction-of-rifampicin-and-vitamin-k-antagonists
#12
Lars Mizera, Tobias Geisler, Klaus Mörike, Meinrad Gawaz, Martin Steeg
The cytochrome P450 is a superfamily of isoenzymes that are responsible for the metabolism of many drugs. Significant changes in pharmacokinetics and drug interactions may be due to induction of hepatic cytochrome P450 enzymes. Rifampicin is a common inducer of CYP3A4. We report a case of a 57-year-old woman who was suspected for endocarditis and therefore treated with rifampicin. Due to previous mechanical aortic valve replacement, she also received phenprocoumon for anticoagulation. Although continuing anticoagulant therapy, antibiotic coadministration led to normal international normalised ratio (INR) level...
February 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29436995/bacterial-luciferase-gene-cassette-as-a-real-time-bioreporter-for-infection-model-and-drug-evaluation
#13
Xiwen Wang, Hang Chi, Bo Zhou, Wenliang Li, Zhiping Li, Zhiping Xia
The bacterial luciferase gene cassette (lux) is an ideal bioreporter for real-time monitoring of the dynamics of bacteria because it is a fully autonomous, substrate-free bioluminescent reporter system available in a prokaryotic or eukaryotic host background. The lux operon is emerging as a powerful bioreporter for the study of a wide range of biological processes such as gene function, drug discovery and development, cellular trafficking, protein-protein interactions, and especially tumorigenesis and cancer treatment...
February 13, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29430821/alanine-and-lysine-scans-of-the-ll-37-derived-peptide-fragment-kr-12-reveal-key-residues-for-antimicrobial-activity
#14
Sunithi Gunasekera, Taj Muhammad, Adam A Strömstedt, K Johan Rosengren, Ulf Göransson
The human host defence peptide LL-37 is a broad-spectrum antibiotic with immunomodulatory functions. Residues 18-29 in LL-37 have previously been identified as a minimal peptide (KR-12) that retains antibacterial activity with decreased cytotoxicity. In this study, we generated analogues of KR-12 by Ala and Lys scans to identify key elements for activity. These were tested against a panel of human pathogens and for membrane permeabilization on liposomes. Replacements of hydrophobic and cationic residues with Ala were detrimental for antibiotic potency...
February 11, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29429947/hospital-readmission-rates-and-risk-factors-for-readmission-following-cytoreductive-surgery-crs-and-hyperthermic-intraperitoneal-chemotherapy-hipec-for-peritoneal-surface-malignancies
#15
Yael Dreznik, Aviad Hoffman, Tamar Hamburger, Almog Ben-Yaacov, Yossi Dux, Harel Jacoby, Yaniv Berger, Aviram Nissan, Mordechai Gutman
BACKGROUND: Cytoreductive surgery and Hyperthermic intra-peritoneal chemotherapy (CRS/HIPEC) for peritoneal surface malignancies is associated with high morbidity. The increased numbers of patients undergoing CRS/HIPEC in recent years mandates risk analysis and quality assurance. However, only scarce data exist regarding causative parameters for readmission. The aim of this study was to assess readmission rates and risk factors associated with readmission. METHODS: A retrospective-cohort study including patients from two high-volume centers who underwent CRS/HIPEC surgery between the years 2007-2016 was performed...
February 8, 2018: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/29428098/pathophysiological-consequences-of-obstructive-jaundice-and-perioperative-management
#16
REVIEW
Efstathios T Pavlidis, Theodoros E Pavlidis
BACKGROUND: Obstructive jaundice is a common problem in daily clinical practice. Understanding completely the pathophysiological changes in obstructive jaundice remains a challenge for planning current and future management. DATA SOURCES: A PubMed was searched for relevant articles published up to August 2016. The effect of obstructive jaundice on proinflammatory cytokines, coagulation status, hemodynamics and organ functions were evaluated. RESULTS: The effects of obstructive jaundice included biliary tree, the hepatic cell and liver function as well as systemic complications...
February 2018: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/29423883/prescribing-immunoglobulin-replacement-therapy-for-patients-with-non-classical-and-secondary-antibody-deficiency-an-analysis-of-the-practice-of-clinical-immunologists-in-the-uk-and-republic-of-ireland
#17
John David M Edgar, Alex G Richter, Aarnoud P Huissoon, Dinakantha S Kumararatne, Helen E Baxendale, Claire A Bethune, Tomaz Garcez, Siraj A Misbah, Ricardo U Sorensen
BACKGROUND: Immunologists are increasingly being asked to assess patients with non-classical and secondary antibody deficiency to determine their potential need for immunoglobulin replacement therapy (IGRT). Immunoglobulin is a limited, expensive resource and no clear guidance exists for this broad patient group. The purpose of this survey is to establish what factors influence the decision to commence IGRT in adult patients, when diagnostic criteria for primary antibody deficiency are not fulfilled...
February 8, 2018: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/29422729/outcome-of-patients-admitted-to-a-tertiary-referral-intensive-care-unit-with-urosepsis-needing-source-control
#18
Chaitra C Rao, Pradeep Rangappa, Karthik Rao, Ipe Jacob
Introduction: Urosepsis is one of the common causes of admission to the Intensive Care Unit (ICU). It has traditionally been treated with antibiotics, but surgical management with Double J [DJ] ureteral stents is gaining popularity. This study compares patients with complicated urosepsis who underwent surgical source control by ureteral stenting with those managed medically. Materials and Methods: The study enrolled patients admitted to a tertiary adult ICU with a diagnosis of urosepsis over a period of 2 years...
January 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29420096/gamma-globulin-replacement-therapy-in-uncontrolled-severe-asthma-associated-with-humoral-immunodeficiency-a-series-of-five-case-reports
#19
Angelica Tiotiu, Yves Martinet, Roger Jankowski, Philippe Devillier
We report on five adult cases of the rare association of asthma with humoral immunodeficiency (huID). All patients had uncontrolled asthma related to recurrent respiratory infections. Asthma was diagnosed according to the Global Initiative for Asthma (GINA) guidelines, and bronchiectasis was ruled out by a CT chest scan. Two men (aged 28 and 60) presented with pollen allergies, chronic rhinosinusitis, and IgG deficiency (7.8 and 7.6 g/L, respectively). Both patients underwent surgery for nasal polyposis but relapsed with acute sinusitis and severe asthma exacerbations requiring treatment with oral corticosteroids and antibiotics...
February 8, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29417775/-mechanical-complications-with-self-made-antibiotic-loaded-cement-articulating-spacers-in-the-treatment-of-the-infected-hip-replacement
#20
Yin-Qiao Du, Yong-Gang Zhou, Li-Bo Hao, Wen-Ming Wu, Hai-Yang Ma, Chong Zheng, Shang Piao, Zhi-Sen Gao, Jing-Yang Sun, Sen Wang
OBJECTIVE: To study the complications and efficacy of self-made, antibiotic-loaded cement articulating spacers in the treatment of the infected hip replacement. METHODS: Between January 2006 and July 2016, 265 patients (266 hips) received a self-made, antibiotic-loaded cement articulating spacer as part of a two-stage protocol. Among those patients, there were 143 males(144 hips) and 122 females(122 hips). The cement articulating spacers with vancomycin and two Steinman pins were made by a self-made mold system...
May 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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