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Gregory D Bowden, Kirkwood M Land, Roberta M O'Connor, Heather M Fritz
The apicomplexan parasite Sarcocystis neurona is the primary etiologic agent of equine protozoal myeloencephalitis (EPM), a serious neurologic disease of horses. Many horses in the U.S. are at risk of developing EPM; approximately 50% of all horses in the U.S. have been exposed to S. neurona and treatments for EPM are 60-70% effective. Advancement of treatment requires new technology to identify new drugs for EPM. To address this critical need, we developed, validated, and implemented a high-throughput screen to test 725 FDA-approved compounds from the NIH clinical collections library for anti-S...
February 16, 2018: International Journal for Parasitology, Drugs and Drug Resistance
Sophie Outh-Gauer, Marie Alt, Christophe Le Tourneau, Jérémy Augustin, Chloé Broudin, Cassandre Gasne, Thomas Denize, Haitham Mirghani, Elizabeth Fabre, Madeleine Ménard, Florian Scotte, Eric Tartour, Cécile Badoual
Cancer occurrence can be understood as the result of dysfunctions in immune tumoral microenvironment. Here we review the recent understandings of those microenvironment changes, regarding their causes and prognostic significance in head and neck (HN) carcinoma. We will focus on HN squamous cell cancer (SCC) and nasopharyngeal carcinomas (NPC). Their overall poor prognosis may be improved with immunotherapy in a subset of patients, as supported by current clinical trials. However, finding reliable markers of therapeutic response is crucial for patient selection, due to potential severe adverse reactions and high costs...
March 1, 2018: Cancer Treatment Reviews
Martin Kornecki, Jochen Strube
Productivity improvements of mammalian cell culture in the production of recombinant proteins have been made by optimizing cell lines, media, and process operation. This led to enhanced titers and process robustness without increasing the cost of the upstream processing (USP); however, a downstream bottleneck remains. In terms of process control improvement, the process analytical technology (PAT) initiative, initiated by the American Food and Drug Administration (FDA), aims to measure, analyze, monitor, and ultimately control all important attributes of a bioprocess...
March 16, 2018: Bioengineering
George Grunberger, Yehuda Handelsman, Zachary T Bloomgarden, Vivian A Fonseca, Alan J Garber, Richard A Haas, Victor L Roberts, Guillermo E Umpierrez
This document represents the official position of the American Association of Clinical Endocrinologists and American College of Endocrinology. Where there are no randomized controlled trials or specific U.S. FDA labeling for issues in clinical practice, the participating clinical experts utilized their judgment and experience. Every effort was made to achieve consensus among the committee members. Position statements are meant to provide guidance, but they are not to be considered prescriptive for any individual patient and cannot replace the judgment of a clinician...
March 2018: Endocrine Practice
Guillermo de Anda-Jáuregui, Kai Guo, Brett A McGregor, Junguk Hur
The quintessential biological response to disease is inflammation. It is a driver and an important element in a wide range of pathological states. Pharmacological management of inflammation is therefore central in the clinical setting. Anti-inflammatory drugs modulate specific molecules involved in the inflammatory response; these drugs are traditionally classified as steroidal and non-steroidal drugs. However, the effects of these drugs are rarely limited to their canonical targets, affecting other molecules and altering biological functions with system-wide effects that can lead to the emergence of secondary therapeutic applications or adverse drug reactions (ADRs)...
2018: Frontiers in Physiology
Anita H Clayton, Irwin Goldstein, Noel N Kim, Stanley E Althof, Stephanie S Faubion, Brooke M Faught, Sharon J Parish, James A Simon, Linda Vignozzi, Kristin Christiansen, Susan R Davis, Murray A Freedman, Sheryl A Kingsberg, Paraskevi-Sofia Kirana, Lisa Larkin, Marita McCabe, Richard Sadovsky
The International Society for the Study of Women's Sexual Health process of care (POC) for management of hypoactive sexual desire disorder (HSDD) algorithm was developed to provide evidence-based guidelines for diagnosis and treatment of HSDD in women by health care professionals. Affecting 10% of adult females, HSDD is associated with negative emotional and psychological states and medical conditions including depression. The algorithm was developed using a modified Delphi method to reach consensus among the 17 international panelists representing multiple disciplines...
March 9, 2018: Mayo Clinic Proceedings
Evelina Cardoso, Thomas Mercier, Anna Dorothea Wagner, Krisztian Homicsko, Olivier Michielin, Kim Ellefsen-Lavoie, Laurène Cagnon, Manuel Diezi, Thierry Buclin, Nicolas Widmer, Chantal Csajka, Laurent Decosterd
A sensitive and selective method of high performance liquid chromatography (HPLC) coupled to tandem mass spectrometry (MS/MS) has been developed for the simultaneous quantification of six anticancer protein kinase inhibitors (PKIs), dabrafenib, trametinib, vemurafenib, cobimetinib, pazopanib, regorafenib, and two active metabolites (regorafenib-M2 and regorafenib-M5) in human plasma. Plasma protein precipitation with methanol enables the sample extraction of 100 μL aliquot of plasma. Analytes are detected by electrospray triple-stage quadrupole mass spectrometry and quantified using the calibration curves with stable isotope-labeled internal standards...
February 8, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Benjamin L Solomon, Ignacio Garrido-Laguna
The advent of immune checkpoint inhibitors (PD-1, PD-L1 and CTLA-4) has resulted in unprecedented long-term remissions of unresectable cancers. The efficacy of checkpoint inhibitors was recently demonstrated in gastrointestinal malignancies with mismatch repair deficiencies (dMMR). Pembrolizumab became the first tissue-agnostic US FDA-approved drug based on the presence of the predictive biomarker dMMR. In addition, the FDA in 2017 approved pembrolizumab for PD-L1-positive advanced gastric cancer in third-line and second-line hepatocellular therapy...
March 15, 2018: Future Oncology
Charles K Davis, Sreekala S Nampoothiri, G K Rajanikant
The constant failure of single-target drug therapies for ischemic stroke necessitates the development of novel pleiotropic pharmacological treatment approaches, to effectively combat the aftermath of this devastating disorder. The major objective of our study involves a multi-target drug repurposing strategy to stabilize hypoxia-inducible factor-1 α (HIF-1α) via a structure-based screening approach to simultaneously inhibit its regulatory proteins, PHD2, FIH, and pVHL. Out of 1424 Food and Drug Administration (FDA)-approved drugs that were screened, folic acid (FA) emerged as the top hit and its binding potential to PHD2, FIH, and pVHL was further verified by re-docking, molecular dynamics (MD) simulation and by Drug Affinity Responsive Target Stability (DARTS) assay...
March 14, 2018: Molecular Neurobiology
Lin Cao, Jizheng Chen, Yaxin Wang, Yuting Yang, Jie Qing, Zihe Rao, Xinwen Chen, Zhiyong Lou
Hepatitis C virus (HCV) is a leading cause of liver disease worldwide. Although several HCV protease/polymerase inhibitors were recently approved by U.S. FDA, the combination of antivirals targeting multiple processes of HCV lifecycle would optimize anti-HCV therapy and against potential drug-resistance. Viral entry is an essential target step for antiviral development, but FDA-approved HCV entry inhibitor remains exclusive. Here we identify serotonin 2A receptor (5-HT2A R) is a HCV entry factor amendable to therapeutic intervention by a chemical biology strategy...
March 14, 2018: Protein & Cell
Hiroshi Maeda, Mahin Khatami
For over six decades reductionist approaches to cancer chemotherapies including recent immunotherapy for solid tumors produced outcome failure-rates of 90% (±5) according to governmental agencies and industry. Despite tremendous public and private funding and initial enthusiasm about missile-therapy for site-specific cancers, molecular targeting drugs for specific enzymes such as kinases or inhibitors of growth factor receptors, the outcomes are very bleak and disappointing. Major scientific reasons for repeated failures of such therapeutic approaches are attributed to reductionist approaches to research and infinite numbers of genetic mutations in chaotic molecular environment of solid tumors that are bases of drug development...
March 1, 2018: Clinical and Translational Medicine
Dominique Douguet
Presented here are several data sets that gather information collected from the labels of the FDA approved drugs: their molecular structures and those of the described active metabolites, their associated pharmacokinetics and pharmacodynamics data, and the history of their marketing authorization by the FDA. To date, 1852 chemical structures have been identified with a molecular weight less than 2000 of which 492 are or have active metabolites. To promote the sharing of data, the original web server was upgraded for browsing the database and downloading the data sets (http://chemoinfo...
March 8, 2018: ACS Medicinal Chemistry Letters
Matthew Dankner, April A N Rose, Shivshankari Rajkumar, Peter M Siegel, Ian R Watson
The RAS-RAF-MEK-ERK signaling cascade is among the most frequently mutated pathways in human cancer. Approximately 50% of melanoma patients possess a druggable hotspot V600E/K mutation in the BRAF protein kinase. FDA-approved combination therapies of BRAF and MEK inhibitors are available that provide survival benefits to patients with a BRAF V600 mutation. Non-V600 BRAF mutants are found in many cancers, and are more prevalent than V600 mutations in certain tumor types. For example, between 50-80% of BRAF mutations in non-small cell lung cancer and 22-30% in colorectal cancer encode for non-V600 mutants...
March 15, 2018: Oncogene
Michael Hallek, Bruce D Cheson, Daniel Catovsky, Federico Caligaris-Cappio, Guillermo Dighiero, Hartmut Döhner, Peter Hillmen, Michael Keating, Emili Montserrat, Nicholas Chiorazzi, Stephan Stilgenbauer, Kanti R Rai, John C Byrd, Barbara Eichhorst, Susan O'Brien, Tadeusz Robak, John F Seymour, Thomas J Kipps
In 2008, International Workshop on CLL (iwCLL) published consensus guidelines for the design and conduct of clinical trials for patients with chronic lymphocytic leukemia (CLL) that were revised from those previously published by the National Cancer Institute-sponsored Working Group. These guidelines provided definitions intended to standardize the assessment of patients that were adopted by the Food and Drug Administration (FDA) and European Medicines Agency (EMA) for the evaluation of new drugs. Since the publication of these guidelines there have been major advances in the biology and treatment of patients with CLL, prompting the iwCLL to evaluate and revise the 2008 criteria...
March 14, 2018: Blood
Alejo Rodriguez-Vida, Joaquim Bellmunt
Metastatic urothelial carcinoma (UC) remains an aggressive disease associated with limited treatment options and a reduced survival. In spite of this, the first-line treatment based on platinum-based combinations has remained virtually unchanged for the last 20-30 years. Similarly, before the advent of the immune checkpoint inhibitors, there were no FDA-approved drugs for second-line therapy. In the last few years, impressive signs of anti-tumor activity have been reported with several immunotherapy agents targeting the programmed cell death-1 (PD-1) pathway...
March 14, 2018: Expert Review of Anticancer Therapy
Gillian K Weston, Jette Hooper, Bruce E Strober
Dupilumab (Dupixent, Regeneron Pharmaceuticals and Sanofi Genzyme) is a novel biologic medication recently approved by the FDA for the treatment of moderate-to-severe atopic dermatitis in adults who have not achieved adequate control with topical medications. Dyshidrotic eczema is a distinct entity, often considered on the spectrum of atopic dermatitis, that primarily effects the palms and soles; it is often associated with considerable morbidity yet is frequently challenging to treat. We report two cases of recalcitrant dyshidrotic eczema treated successfully with dupilumab at standard dosing...
March 1, 2018: Journal of Drugs in Dermatology: JDD
Guo Yu, Dan-Na Wu, Yan Gong, Guo-Fu Li, Hong-Hao Zhou
PURPOSE: The labeling information, authorized by the US Food and Drug Administration (FDA) and the European Medicines Agency (EMA), is expected to guide the method of drug administration with reference to meal intake, aiming at ensuring favorable safety profile and achieving optimal drug exposure. However, interactions between meals and a specific oral anticancer medication are complicated in that could be strongly affected by inter-individual variability in pharmacokinetics, meal compositions, and the timing of drug administration with respect to meal intake, which could lead to conflicting meal recommendations between regulatory authorities...
March 13, 2018: European Journal of Clinical Pharmacology
Michael A Luzuriaga, Danielle R Berry, John C Reagan, Ronald A Smaldone, Jeremiah J Gassensmith
Biodegradable polymer microneedle (MN) arrays are an emerging class of transdermal drug delivery devices that promise a painless and sanitary alternative to syringes; however, prototyping bespoke needle architectures is expensive and requires production of new master templates. Here, we present a new microfabrication technique for MNs using fused deposition modeling (FDM) 3D printing using polylactic acid, an FDA approved, renewable, biodegradable, thermoplastic material. We show how this natural degradability can be exploited to overcome a key challenge of FDM 3D printing, in particular the low resolution of these printers...
March 14, 2018: Lab on a Chip
Triparna Sen, Carl M Gay, Lauren Averett Byers
Small cell lung cancer (SCLC) is an aggressive malignancy that accounts for 14% of all lung cancer diagnoses. Despite decades of active research, treatment options for SCLC are limited and resistance to the few Food and Drug Administration (FDA) approved therapies develops rapidly. With no approved targeted agents to date, new therapeutic strategies are desperately needed. SCLC is characterized by high mutation burden, ubiquitous loss of TP53 and RB1, mutually exclusive amplification of MYC family members, thereby, high genomic instability...
February 2018: Translational Lung Cancer Research
Azam Peyvandipour, Nafiseh Saberian, Adib Shafi, Michele Donato, Sorin Draghici
Motivation: Identification of novel therapeutic effects for existing U.S. Food and Drug Administration (FDA)-approved drugs, drug repurposing, is an approach aimed to dramatically shorten the drug discovery process, which is costly, slow and risky. Several computational approaches use transcriptional data to find potential repurposing candidates. The main hypothesis of such approaches is that if gene expression signature of a particular drug is opposite to the gene expression signature of a disease, that drug may have a potential therapeutic effect on the disease...
March 9, 2018: Bioinformatics
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