keyword
MENU ▼
Read by QxMD icon Read
search

new antibiotics

keyword
https://www.readbyqxmd.com/read/29454155/immune-checkpoint-inhibitors-in-non-small-cell-lung-cancer-nsclc-approaches-on-special-subgroups-and-unresolved-burning-questions
#1
REVIEW
J Remon, N Vilariño, N Reguart
Immune checkpoint inhibitors (ICIs) have been incorporated in the treatment strategy of advanced non-small cell lung cancer (NSCLC). Beyond the already approved indications in first- and second-line setting of advanced NSCLC, new data has recently emerged demonstrating its efficacy in locally advanced disease as maintenance after chemo-radiotherapy and currently several trials are also exploring its efficacy in earlier stages of the disease to evaluate whether these results could be extrapolated to the adjuvant setting...
February 8, 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29454130/abscess-within-a-glioblastoma-mimicking-a-matryoshka-doll
#2
Kislay Kishore, Manish Beniwal, Shilpa Rao, K V L N Rao, Vikas Vazhayil, Dwarkanath Srinivas, Sampath Somanna
BACKGROUND: Abscess co-existing within a brain tumor is a rare entity. Case reports in literature primarily consist of sellar pathology and parenchymal lesions including meningioma, glioma, and metastases. We report a case of glioblastoma with an intra-tumoral abscess in a middle-aged lady with no prior invasive procedure or systemic focus of infection. CASE DESCRIPTION: A 45-year old lady presented with new onset generalized seizures and rapidly progressive left hemiparesis...
February 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29454031/expression-and-characterization-of-recombinant-rattusin-an-%C3%AE-defensin-related-peptide-with-a-homodimeric-scaffold-formed-by-intermolecular-disulfide-exchanges
#3
Sehyeon Ji, Hyosuk Yun, Gwansik Park, Hye Jung Min, Chul Won Lee
Rattusin is an α-defensin-related peptide isolated from the small intestine of rats. The primary sequence of linear rattusin is composed of 31 amino acids containing five cysteines with a unique spacing pattern. It forms a homodimeric scaffold in which the primary structure occurs in an antiparallel fashion formed by five intermolecular disulfide (SS) bonds. Rattusin is a highly potent antibiotic, which not only exhibits broad-spectrum antimicrobial activity, but also maintains its antimicrobial activity at physiological salt concentrations...
February 14, 2018: Protein Expression and Purification
https://www.readbyqxmd.com/read/29453989/management-of-bacterial-postoperative-endophthalmitis-and-the-role-of-vitrectomy
#4
REVIEW
Ben Clarke, Tom Williamson, Giampaolo Gini, Bhaskar Gupta
Management of postoperative bacterial endophthalmitis was explored in the Endophthalmitis Vitrectomy Study 37 (EVS) in 1995, which has underpinned the core protocols in treatment ever since. While surgical techniques have continued to evolve, little has changed in the overall clinical management as no further large randomized controlled trials have taken place. We review the literature addressing the incidence of endophthalmitis, pathogens, antibiotic therapies, and the role of vitrectomy. We suggest an update to management protocols based on available evidence...
February 14, 2018: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29452993/an-in-vitro-evaluation-of-the-efficacy-of-tedizolid-implications-for-the-treatment-of-skin-and-soft-tissue-infections
#5
Pierre Delpech, Muna ALeryan, Brian Jones, Curtis Gemmell, Sue Lang
Skin and soft tissue infections (SSTI) are among the most commonly occurring infections and evidence suggests that these are increasing world-wide. The aetiology is diverse, but Staphylococcus aureus predominate and these are often resistant to antimicrobials that were previously effective. Tedizolid is a new oxazolidinone-class antibacterial indicated for the treatment of adults with SSTI caused by Gram-positive pathogens, including S. aureus. The aim of this study was to evaluate the in vitro efficacy of tedizolid in comparison to other clinically used antibacterials against antibiotic sensitive- and resistant-staphylococci, grown in planktonic cultures and as biofilms reflecting the growth of the microorganism during episodes of SSTI...
January 10, 2018: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29452992/activity-of-ceftobiprole-against-staphylococcus-spec-isolates-derived-from-foreign-body-associated-infections
#6
Gunnar T R Hischebeth, Sascha Gravius, Ernst Molitor, Hendrik Kohlhof, Achim Hoerauf, Caecilia Hilgers, Thomas M Randau
Antibiotic therapy is essential in foreign body associated infections. The treatment regime should aim at high tissue concentrations, high bioavailability, high biofilm penetration and good tolerance. We investigated whether the new cephalosporin ceftobiprole is active against clinical isolates from musculoskeletal foreign body associated infections. One hundred ninety-six staphylococci isolates (coagulase negative staphylococci and Staphylococcus aureus) derived from foreign body associated infections were tested towards susceptibility to ceftobiprole, using a test strip assay and broth microdilution...
January 31, 2018: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29452960/traditionally-practiced-medicinal-plant-extracts-inhibit-the-ergosterol-biosynthesis-of-clinically-isolated-dermatophytic-pathogens
#7
M Chellappandian, M Saravanan, P Pandikumar, P Harikrishnan, K Thirugnanasambantham, S Subramanian, V I Hairul-Islam, S Ignacimuthu
OBJECTIVE: Dermatophytes are resistant to some available antibiotics. Development of new plant drugs to control drug resistant microbes is urgently needed. This study evaluates the antidermatophytic potential of 18 selected medicinal plants used by traditional healers in Theni and Virudhunagar Districts of Tamil Nadu, India. MATERIALS AND METHODS: Selected plant parts were collected, shade dried and powdered. Plant powders were extracted with ethanol and their antifungal potency was investigated against and clinical dermatophytes...
February 13, 2018: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29452952/phasevarions-of-bacterial-pathogens-methylomics-sheds-new-light-on-old-enemies
#8
REVIEW
John M Atack, Aimee Tan, Lauren O Bakaletz, Michael P Jennings, Kate L Seib
A wide variety of bacterial pathogens express phase-variable DNA methyltransferases that control expression of multiple genes via epigenetic mechanisms. These randomly switching regulons - phasevarions - regulate genes involved in pathogenesis, host adaptation, and antibiotic resistance. Individual phase-variable genes can be identified in silico as they contain easily recognized features such as simple sequence repeats (SSRs) or inverted repeats (IRs) that mediate the random switching of expression. Conversely, phasevarion-controlled genes do not contain any easily identifiable features...
February 13, 2018: Trends in Microbiology
https://www.readbyqxmd.com/read/29451901/the-novel-antibiotic-rhodomyrtone-traps-membrane-proteins-in-vesicles-with-increased-fluidity
#9
Dennapa Saeloh, Varomyalin Tipmanee, Kin Ki Jim, Marien P Dekker, Wilbert Bitter, Supayang P Voravuthikunchai, Michaela Wenzel, Leendert W Hamoen
The acylphloroglucinol rhodomyrtone is a promising new antibiotic isolated from the rose myrtle Rhodomyrtus tomentosa, a plant used in Asian traditional medicine. While many studies have demonstrated its antibacterial potential in a variety of clinical applications, very little is known about the mechanism of action of rhodomyrtone. Preceding studies have been focused on intracellular targets, but no specific intracellular protein could be confirmed as main target. Using live cell, high-resolution, and electron microscopy we demonstrate that rhodomyrtone causes large membrane invaginations with a dramatic increase in fluidity, which attract a broad range of membrane proteins...
February 16, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29451368/public-health-response-to-an-imported-case-of-canine-melioidosis
#10
C W Ryan, K Bishop, D D Blaney, S J Britton, F Cantone, C Egan, M G Elrod, C W Frye, A M Maxted, G Perkins
Melioidosis in humans presents variably as fulminant sepsis, pneumonia, skin infection and solid organ abscesses. It is caused by Burkholderia pseudomallei, which in the United States is classified as a select agent, with "potential to pose a severe threat to both human and animal health, to plant health or to animal and plant products" (Federal Select Agent Program, http://www.selectagents.gov/, accessed 22 September 2016). Burkholderia pseudomallei is found in soil and surface water in the tropics, especially South-East Asia and northern Australia, where melioidosis is endemic...
February 16, 2018: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29451043/murepavadin-a-new-antibiotic-class-in-the-pipeline
#11
Ignacio Martin-Loeches, Glenn E Dale, Antoni Torres
With the increase in multi-drug resistant P. aeruginosa, antimicrobials with a novel mechanism of action are needed that can target these infections. Areas covered: Intravenous murepavadin is in Phase 3 development for the treatment of HABP/VABP due to P. aeruginosa. This paper summarizes the available information on the discovery, the in vitro activity, pharmacokinetic and pharmacodynamic properties and the clinical pharmacology of murepavadin to date. Expert commentary: P. aeruginosa has an intrinsic resistance to many antibiotics due to high cellular impermeability and efficient drug efflux mechanisms, and the recent increase in prevalence of multidrug-resistant P...
February 16, 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29451013/pradimicin-ird-from-amycolatopsis-sp-ird-009-and-its-antimicrobial-and-cytotoxic-activities
#12
Anelize Bauermeister, Felipe A Calil, Francisco das C L Pinto, Talita C T Medeiros, Larissa C Almeida, Leonardo J Silva, Itamar S de Melo, Tiago D Zucchi, Letícia V Costa-Lotufo, Luiz A B Moraes
A new polycyclic antibiotic, pradimicin-IRD, was isolated from actinobacteria Amycolatopsis sp. IRD-009 recovered from soil of Brazilian rainforest undergoing restoration area. This molecule is the major compound produced in solid culture media. The new compound was detected by a focused method of precursor ion (high-performance liquid chromatography coupled to tandem mass spectrometer) developed previously to identify unusual aminoglycosyl sugar moieties. The compound was isolated and its structure was, therefore, elucidated by high-resolution mass spectrometry, and 1D and 2D nuclear magnetic resonance experiments...
February 16, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29449837/cyclic-di-gmp-and-oprf-are-involved-in-the-response-of-pseudomonas-aeruginosa-to-substrate-material-stiffness-during-attachment-on-polydimethylsiloxane-pdms
#13
Fangchao Song, Hao Wang, Karin Sauer, Dacheng Ren
Recently, we reported that the stiffness of poly(dimethylsiloxane) (PDMS) affects the attachment of Pseudomonas aeruginosa , and the morphology and antibiotic susceptibility of attached cells. To further understand how P. aeruginosa responses to material stiffness during attachment, the wild-type P. aeruginosa PAO1 and several isogenic mutants were characterized for their attachment on soft and stiff PDMS. Compared to the wild-type strain, mutation of the oprF gene abolished the differences in attachment, growth, and size of attached cells between soft and stiff PDMS surfaces...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29449834/peptidoglycan-recognition-protein-3-does-not-alter-the-outcome-of-pneumococcal-pneumonia-in-mice
#14
Anshu Shrivastav, Alexander N Dabrowski, Claudia Conrad, Nelli Baal, Holger Hackstein, Stephanie Plog, Kristina Dietert, Achim D Gruber, Philippe D N'Guessan, Sahar Aly, Norbert Suttorp, Janine Zahlten
Pneumococci frequently cause community-acquired pneumonia, a disease with high mortality rates, particularly in young children and in the elderly. Endogenous antimicrobial peptides and proteins such as PGLYRP3 may contribute to the progression and outcome of this disease. Since increasing antibiotic resistant strains occur all over the world, these endogenous antimicrobial molecules are interesting new targets for future therapies. In this study, the expression pattern of PGLYRP3 was analyzed in alveolar epithelial cells, alveolar macrophages and neutrophils...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29449813/non-nucleotide-agonists-triggering-p2x7-receptor-activation-and-pore-formation
#15
REVIEW
Francesco Di Virgilio, Anna L Giuliani, Valentina Vultaggio-Poma, Simonetta Falzoni, Alba C Sarti
The P2X7 receptor (P2X7R) is a ligand-gated plasma membrane ion channel belonging to the P2X receptor subfamily activated by extracellular nucleotides. General consensus holds that the physiological (and maybe the only) agonist is ATP. However, scattered evidence generated over the last several years suggests that ATP might not be the only agonist, especially at inflammatory sites. Solid data show that NAD + covalently modifies the P2X7R of mouse T lymphocytes, thus lowering the ATP threshold for activation...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29449370/structural-basis-for-antibody-targeting-of-the-broadly-expressed-microbial-polysaccharide-poly-n-acetyl-glucosamine
#16
Caroline Soliman, Anna K Walduck, Elizabeth Yuriev, Jack S Richards, Colette Cywes-Bentley, Gerald B Pier, Paul A Ramsland
In response to the widespread emergence of antibiotic-resistant microbes, new therapeutic agents are required for many human pathogens. A non-mammalian polysaccharide, poly- N -acetyl-D-glucosamine (PNAG), is produced by bacteria, fungi, and protozoan parasites. Antibodies that bind to PNAG and its deacetylated form (dPNAG) exhibit promising in vitro and in vivo activities against many microbes. A human IgG1 mAb (F598) that binds both PNAG and dPNAG has opsonic and protective activities against multiple microbial pathogens and is undergoing preclinical and clinical assessments as a broad-spectrum antimicrobial therapy...
February 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29449175/study-of-pandrug-and-heavy-metal-resistance-among-e-coli-from-anthropogenically-influenced-delhi-stretch-of-river-yamuna
#17
Mudsser Azam, Arif Tasleem Jan, Ashutosh Kumar, Kehkashan Siddiqui, Aftab Hossain Mondal, Qazi Mohd Rizwanul Haq
Escalating burden of antibiotic resistance that has reached new heights present a grave concern to mankind. As the problem is no longer confined to clinics, we hereby report identification of a pandrug resistant Escherichia coli isolate from heavily polluted Delhi stretch of river Yamuna, India. E. coli MRC11 was found sensitive only to tobramycin against 21 antibiotics tested, with minimum inhibitory concentration values >256μg/mL for amoxicillin, carbenicillin, aztreonam, ceftazidime and cefotaxime. Addition of certain heavy metals at higher concentrations were ineffective in increasing susceptibility of E...
February 12, 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29449125/enhancing-the-anti-biofilm-activity-of-5-aryl-2-aminoimidazoles-through-nature-inspired-dimerisation
#18
Tran Thi Thu Trang, Lise Dieltjens, Geert Hooyberghs, Kai Waldrant, Denis S Ermolat'ev, Erik V Van der Eycken, Hans P L Steenackers
The increased tolerance of biofilms against disinfectants and antibiotics has stimulated research into new methods of biofilm prevention and eradication. In our previous work, we have identified the 5-aryl-2-aminoimidazole core as a scaffold that demonstrates preventive activity against biofilm formation of a broad range of bacterial and fungal species. Inspired by the dimeric nature of natural 2-aminoimidazoles of the oroidin family, we investigated the potential of dimers of our decorated 5-aryl-2-aminoimidazoles as biofilm inhibitors...
January 31, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29448981/treatment-and-prevention-of-invasive-pneumococcal-disease
#19
A R Domínguez-Alegría, V Pintado, I Barbolla
Invasive pneumococcal disease is a severe infection that mainly affects patients with associated comorbidity. The paediatric conjugate vaccination has resulted in a change in the adult vaccination strategy. The antibiotic resistance of pneumococcus is not currently a severe problem. Nevertheless, the World Health Organisation has included pneumococcus among the bacteria whose treatment requires the introduction of new drugs, such as ceftaroline and ceftobiprole. Although the scientific evidence is still limited, the combination of beta-lactams and macrolides is recommended as empiric therapy for bacteraemic pneumococcal pneumonia...
February 12, 2018: Revista Clínica Española
https://www.readbyqxmd.com/read/29448938/comparative-genomic-analysis-of-ten-clinical-streptococcus-pneumoniae-collected-from-a-malaysian-hospital-reveal-31-new-unique-drug-resistant-snps-using-whole-genome-sequencing
#20
Hassan Mahmood Jindal, Babu Ramanathan, Cheng Foh Le, Ranganath Gudimella, Rozaimi Razali, Rishya Manikam, Shamala Devi Sekaran
BACKGROUND: Streptococcus pneumoniae or pneumococcus is a leading cause of morbidity and mortality worldwide, specifically in relation to community-acquired pneumonia. Due to the overuse of antibiotics, S. pneumoniae has developed a high degree of resistance to a wide range of antibacterial drugs. METHODS: In this study, whole genome sequencing (WGS) was performed for 10 clinical strains of S. pneumoniae with different levels of sensitivity to standard antibiotics...
February 15, 2018: Journal of Biomedical Science
keyword
keyword
86474
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"