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Mechanisms of antibiotic resistance

Authors: --- --- --- --- et al.
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195268 Year: Pages: 224 DOI: 10.3389/978-2-88919-526-8 Language: English
Publisher: Frontiers Media SA
Subject: Microbiology --- Science (General)
Added to DOAB on : 2015-12-10 11:59:06
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Abstract

Antibiotics represent one of the most successful forms of therapy in medicine. But the efficiency of antibiotics is compromised by the growing number of antibiotic-resistant pathogens. Antibiotic resistance, which is implicated in elevated morbidity and mortality rates as well as in the increased treatment costs, is considered to be one of the major global public health threats (www.who.int/drugresistance/en/) and the magnitude of the problem recently prompted a number of international and national bodies to take actions to protect the public (http://ec.europa.eu/dgs/health_consumer/docs/road-map-amr_en.pdf: http://www.who.int/drugresistance/amr_global_action_plan/en/; http://www.whitehouse.gov/sites/default/files/docs/carb_national_strategy.pdf). Understanding the mechanisms by which bacteria successfully defend themselves against the antibiotic assault represent the main theme of this eBook published as a Research Topic in Frontiers in Microbiology, section of Antimicrobials, Resistance, and Chemotherapy. The articles in the eBook update the reader on various aspects and mechanisms of antibiotic resistance. A better understanding of these mechanisms should facilitate the development of means to potentiate the efficacy and increase the lifespan of antibiotics while minimizing the emergence of antibiotic resistance among pathogens.

Inhibiting PARP as a Strategic Target in Cancer

Authors: ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889199556 Year: Pages: 97 DOI: 10.3389/978-2-88919-955-6 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Oncology
Added to DOAB on : 2016-01-19 14:05:46
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Poly-ADP ribose polymerase (PARP) proteins are critical mediators of DNA repair. Many traditional anti-cancer chemotherapy agents overwhelm a cell’s ability to repair DNA damage in order to kill proliferating malignant cells. Recent evidence suggests that cancers within and across tissue types have specific defects in DNA repair pathways, and that these defects may predispose for sensitivity and resistance to various classes of cytotoxic agents. Breast, ovarian and other cancers develop in the setting of inherited DNA repair deficiency, and these cancers may be more sensitive to cytotoxic agents that induce DNA strand breaks, as well as to inhibitors of PARP activity. A series of recent clinical trials has tested whether PARP inhibitors can achieve synthetic lethality in hereditary DNA repair-deficient tumors. At the current time, mutation of BRCA serves as a potential, but not comprehensive, biomarker to predict response to PARP inhibitor therapy. Mechanisms of resistance to PARP inhibitors are only recently being uncovered. Future studies seek to identify sporadic cancers that harbor genomic instability rendering susceptibility to PARP inhibitors that compound lethal DNA damage.

Electrospun and Electrosprayed Formulations for Drug Delivery

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ISBN: 9783038979128 / 9783038979135 Year: Pages: 190 DOI: 10.3390/books978-3-03897-913-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General) --- Therapeutics
Added to DOAB on : 2019-06-26 10:09:00
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This book is comprised of important reviews and cutting-edge original research papers concerning electrospun and electrosprayed formulations in drug delivery. Electrospinning and electrospraying have, in recent years, attracted increasing attention in the pharmaceutical sector, with research in the area advancing rapidly. It is now possible to prepare extremely complex systems using multi-fluid processes, and to increase production rates to an industrial scale. Electrospun formulations can be produced under GMP conditions and are in clinical trials. In this volume, we explore a range of topics around electrospinning and electrospraying in controlled drug delivery. Four reviews cover the exciting potential of cyclodextrin-containing fibers and the many potential biomedical applications of electrospun fibers. The use of electrospinning to prepare amorphous systems and improve the dissolution rate and solubility of poorly soluble active ingredients is addressed, and the possibilities of such materials in tissue engineering are comprehensively covered. The six original research papers cover the effect of molecular properties on API release from Eudragit-based electrospun fibers; ferulic acid solid dispersions; electrospun medicines to treat psoriasis; scale up of electrospinning and its use to produce low-dose tablets; transepithelial permeation of drugs released from electrospun fibers, and the possibilities for the synergistic chemophotothermal treatment of cancer.

mTOR in Human Diseases

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ISBN: 9783039210602 / 9783039210619 Year: Pages: 480 DOI: 10.3390/books978-3-03921-061-9 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General)
Added to DOAB on : 2019-06-26 08:44:06
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The mechanistic target of rapamycin (mTOR) is a major signaling intermediary that coordinates favorable environmental conditions with cell growth. Indeed, as part of two functionally distinct protein complexes, named mTORC1 and mTORC2, mTOR regulates a variety of cellular processes, including protein, lipid, and nucleotide synthesis, as well as autophagy. Over the last two decades, major molecular advances have been made in mTOR signaling and have revealed the complexity of the events implicated in mTOR function and regulation. In parallel, the role of mTOR in diverse pathological conditions has also been identified, including in cancer, hamartoma, neurological, and metabolic diseases. Through a series of articles, this book focuses on the role played by mTOR in cellular processes, metabolism in particular, and highlights a panel of human diseases for which mTOR inhibition provides or might provide benefits. It also addresses future studies needed to further characterize the role of mTOR in selected disorders, which will help design novel therapeutic approaches. It is therefore intended for everyone who has an interest in mTOR biology and its application in human pathologies.

Keywords

acute myeloid leukemia --- metabolism --- mTOR --- PI3K --- phosphorylation --- epithelial to mesenchymal transition --- mTOR inhibitor --- pulmonary fibrosis --- transcriptomics --- miRNome --- everolimus --- mTOR --- thyroid cancer --- sodium iodide symporter (NIS)/SLC5A5 --- dopamine receptor --- autophagy --- AKT --- mTOR --- AMPK --- mTOR --- Medulloblastoma --- MBSCs --- mTOR --- T-cell acute lymphoblastic leukemia --- targeted therapy --- combination therapy --- mTOR --- metabolic diseases --- glucose and lipid metabolism --- anesthesia --- neurotoxicity --- synapse --- mTOR --- neurodevelopment --- mTOR --- rapamycin --- autophagy --- protein aggregation --- methamphetamine --- schizophrenia --- tumour cachexia --- mTOR --- signalling --- metabolism --- proteolysis --- lipolysis --- mTOR --- mTORC1 --- mTORC2 --- rapamycin --- rapalogues --- rapalogs --- mTOR inhibitors --- senescence --- ageing --- aging --- cancer --- neurodegeneration --- immunosenescence --- senolytics --- biomarkers --- leukemia --- cell signaling --- metabolism --- apoptosis --- miRNA --- mTOR inhibitors --- mTOR --- tumor microenvironment --- angiogenesis --- immunotherapy --- fluid shear stress --- melatonin --- chloral hydrate --- nocodazole --- MC3T3-E1 cells --- primary cilia --- mTOR complex --- metabolic reprogramming --- cancer --- microenvironment --- nutrient sensor --- oral cavity squamous cell carcinoma (OSCC) --- NVP-BEZ235 --- mTOR --- p70S6K --- mTOR --- advanced biliary tract cancers --- mTOR --- NGS --- illumina --- IonTorrent --- eIFs --- mTOR --- autophagy --- Parkinson’s disease --- mTOR --- PI3K --- cancer --- inhibitor --- therapy --- mTOR --- laminopathies --- lamin A/C --- Emery-Dreifuss muscular dystrophy (EDMD) --- Hutchinson-Gilford progeria syndrome (HGPS) --- autophagy --- cellular signaling --- metabolism --- bone remodeling --- ageing --- mTOR --- fructose --- glucose --- liver --- lipid metabolism --- gluconeogenesis --- Alzheimer’s disease --- autophagy --- mTOR signal pathway --- physical activity --- microRNA --- mTOR --- spermatogenesis --- male fertility --- Sertoli cells --- n/a

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