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Repurposing drugs

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https://www.readbyqxmd.com/read/29053626/a-systematic-review-of-computational-drug-discovery-development-and-repurposing-for-ebola-virus-disease-treatment
#1
REVIEW
James Schuler, Matthew L Hudson, Diane Schwartz, Ram Samudrala
Ebola virus disease (EVD) is a deadly global public health threat, with no currently approved treatments. Traditional drug discovery and development is too expensive and inefficient to react quickly to the threat. We review published research studies that utilize computational approaches to find or develop drugs that target the Ebola virus and synthesize its results. A variety of hypothesized and/or novel treatments are reported to have potential anti-Ebola activity. Approaches that utilize multi-targeting/polypharmacology have the most promise in treating EVD...
October 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29049014/transcriptomic-guided-drug-repositioning-supported-by-a-new-bioinformatics-search-tool-genexpharma
#2
Beste Turanli, Gizem Gulfidan, Kazim Yalcin Arga
Drug repositioning is an innovative approach to identify new therapeutic indications for existing drugs. Drug repositioning offers the promise of reducing drug development timeframes and costs, and because it involves drugs that are already in the clinic, it might remedy some of the drug safety challenges traditionally associated with drug candidates that are not yet available in the clinic. The gene-by-drug interactions are an important dimension of optimal drug repositioning and development strategies. While gene-by-drug interactions have been curated and presented in various databases, novel bioinformatics tools and approaches are timely, and required with a specific focus to support drug positioning...
October 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/29047025/targeting-the-ubiquitin-proteasome-system-for-cancer-treatment-discovering-novel-inhibitors-from-nature-and-drug-repurposing
#3
Claire L Soave, Tracey Guerin, Jinbao Liu, Q Ping Dou
In the past 15 years, the proteasome has been validated as an anti-cancer drug target and 20S proteasome inhibitors (such as bortezomib and carfilzomib) have been approved by the FDA for the treatment of multiple myeloma and some other liquid tumors. However, there are shortcomings of clinical proteasome inhibitors, including severe toxicity, drug resistance, and no effect in solid tumors. At the same time, extensive research has been conducted in the areas of natural compounds and old drug repositioning towards the goal of discovering effective, economical, low toxicity proteasome-inhibitory anti-cancer drugs...
October 18, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29046641/buspirone-counteracts-mk-801-induced-schizophrenia-like-phenotypes-through-dopamine-d3-receptor-blockade
#4
Sebastiano Alfio Torrisi, Salvatore Salomone, Federica Geraci, Filippo Caraci, Claudio Bucolo, Filippo Drago, Gian Marco Leggio
Background: Several efforts have been made to develop effective antipsychotic drugs. Currently, available antipsychotics are effective on positive symptoms, less on negative symptoms, but not on cognitive impairment, a clinically relevant dimension of schizophrenia. Drug repurposing offers great advantages over the long-lasting, risky and expensive, de novo drug discovery strategy. To our knowledge, the possible antipsychotic properties of buspirone, an azapirone anxiolytic drug marketed in 1986 as serotonin 5-HT1A receptor (5-HT1AR) partial agonist, have not been extensively investigated despite its intriguing pharmacodynamic profile, which includes dopamine D3 (D3R) and D4 receptor (D4R) antagonist activity...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29040597/mendelian-randomization-a-novel-approach-for-the-prediction-of-adverse-drug-events-and-drug-repurposing-opportunities
#5
Venexia M Walker, George Davey Smith, Neil M Davies, Richard M Martin
Identification of unintended drug effects, specifically drug repurposing opportunities and adverse drug events, maximizes the benefit of a drug and protects the health of patients. However, current observational research methods are subject to several biases. These include confounding by indication, reverse causality and missing data. We propose that Mendelian randomization (MR) offers a novel approach for the prediction of unintended drug effects. In particular, we advocate the synthesis of evidence from this method and other approaches, in the spirit of triangulation, to improve causal inferences concerning drug effects...
October 11, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29040550/rescue-of-cell-death-and-inflammation-of-a-mouse-model-of-complex-1-mediated-vision-loss-by-repurposed-drug-molecules
#6
Alfred K Yu, Sandipan Datta, Marissa Z McMackin, Gino A Cortopassi
Inherited mitochondrial optic neuropathies, such as Leber's hereditary optic neuropathy (LHON) and Autosomal dominant optic atrophy (ADOA) are caused by mutant mitochondrial proteins that lead to defects in mitochondrial complex 1-driven ATP synthesis, and cause specific retinal ganglion cell (RGC) loss. Complex 1 defects also occur in patients with primary open angle glaucoma (POAG), in which there is specific RGC loss. The treatment of mitochondrial optic neuropathy in the US is only supportive. The Ndufs4 knockout (Ndufs4 KO) mouse is a mitochondrial complex 1-deficient model that leads to RGC loss and rapid vision loss and allows for streamlined testing of potential therapeutics...
October 12, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29038754/histamine-2-receptor-antagonist-famotidine-modulates-cardiac-stem-cell-characteristics-in-hypertensive-heart-disease
#7
Sherin Saheera, Ajay G Potnuri, Renuka Nair
BACKGROUND: Cardiac stem cells (CSCs) play a vital role in cardiac homeostasis. A decrease in the efficiency of cardiac stem cells is speculated in various cardiac abnormalities. The maintenance of a healthy stem cell population is essential for the prevention of adverse cardiac remodeling leading to cardiac failure. Famotidine, a histamine-2 receptor antagonist, is currently used to treat ulcers of the stomach and intestines. In repurposing the use of the drug, reduction of cardiac hypertrophy and improvement in cardiac function of spontaneously hypertensive rats (SHR) was reported by our group...
2017: PeerJ
https://www.readbyqxmd.com/read/29038074/insights-from-pharmacological-similarity-of-epigenetic-targets-in-epipolypharmacology
#8
REVIEW
J Jesús Naveja, José L Medina-Franco
As the number of compounds tested against epigenetic targets grows, exploration of the possible associations in chemical space among these targets could lead to the identification of new drugs or new designs of epipolypharmacological molecules. Thus, here we review the compound-epitarget associations of the numerous public databases available. Specifically, we explore the structure-multitarget activity relationships and diversity of over 7000 compounds tested against 52 epigenetic-related targets. We found that, whereas inhibitors of histone deacetylases and other epigenetic targets clustered in the chemical space, the chemical space of inhibitors of different DNA methyltransferases (DNMTs) did not overlap, indicating DNMT selectivity...
October 13, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/29033372/chloroquine-a-fda-approved-drug-prevents-zika-virus-infection-and-its-associated-congenital-microcephaly-in-mice
#9
Chunfeng Li, Xingliang Zhu, Xue Ji, Natalie Quanquin, Yong-Qiang Deng, Min Tian, Roghiyh Aliyari, Xiangyang Zuo, Ling Yuan, Shabbir Khan Afridi, Xiao-Feng Li, Jae U Jung, Karin Nielsen-Saines, Frank Xiao-Feng Qin, Cheng-Feng Qin, Zhiheng Xu, Genhong Cheng
Zika virus (ZIKV) has become a global public health emergency due to its rapidly expanding range and its ability to cause severe congenital defects such as microcephaly. However, there are no FDA-approved therapies or vaccines against ZIKV infection. Through our screening of viral entry inhibitors, we found that chloroquine (CQ), a commonly used antimalarial and a FDA-approved drug that has also been repurposed against other pathogens, could significantly inhibit ZIKV infection in vitro, by blocking virus internalization...
September 28, 2017: EBioMedicine
https://www.readbyqxmd.com/read/29030460/hmg-coa-reductase-inhibition-delays-dna-repair-and-promotes-senescence-after-tumor-irradiation
#10
Elena V Efimova, Natalia Ricco, Edwardine Labay, Helena J Mauceri, Amy C Flor, Aishwarya Ramamurthy, Harold G Sutton, Ralph R Weichselbaum, Stephen J Kron
Despite significant advances in combinations of radiotherapy and chemotherapy, altered fractionation schedules and image-guided radiotherapy, many cancer patients fail to benefit from radiation. A prevailing hypothesis is that targeting repair of DNA double strand breaks (DSBs) can enhance radiation effects in the tumor and overcome therapeutic resistance without incurring off-target toxicities. Unrepaired DSBs can block cancer cell proliferation, promote cancer cell death and induce cellular senescence. Given the slow progress to date translating novel DSB repair inhibitors as radiosensitizers, we have explored drug repurposing, a proven route to improving speed, costs and success rates of drug development...
October 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29028878/web-based-drug-repurposing-tools-a-survey
#11
Elizabeth Sam, Prashanth Athri
Drug repurposing (a.k.a. drug repositioning) is the search for new indications or molecular targets distinct from a drug's putative activity, pharmacological effect or binding specificities. With the ever-increasing rates of termination of drugs in clinical trials, drug repositioning has risen as one of the effective solutions against the risk of drug failures. Repositioning finds a way to reverse the grim but real trend that Eroom's law portends for the pharmaceutical and biotech industry, and drug discovery in general...
October 6, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/29020948/informed-walks-whispering-hints-to-gene-hunters-inside-networks-jungle
#12
Marilena M Bourdakou, George M Spyrou
BACKGROUND: Systemic approaches offer a different point of view on the analysis of several types of molecular associations as well as on the identification of specific gene communities in several cancer types. However, due to lack of sufficient data needed to construct networks based on experimental evidence, statistical gene co-expression networks are widely used instead. Many efforts have been made to exploit the information hidden in these networks. However, these approaches still need to capitalize comprehensively the prior knowledge encrypted into molecular pathway associations and improve their efficiency regarding the discovery of both exclusive subnetworks as candidate biomarkers and conserved subnetworks that may uncover common origins of several cancer types...
October 11, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/29019016/repurposing-zidovudine-in-combination-with-tigecycline-for-treating-carbapenem-resistant-enterobacteriaceae-infections
#13
S M S Ng, J S P Sioson, J M Yap, F M Ng, H S V Ching, J W P Teo, R Jureen, J Hill, C S B Chia
The global emergence of carbapenem-resistant Enterobacteriaceae (CRE) presents a significant clinical concern, prompting the WHO to prioritize CRE as a top priority pathogen in their 2017 global antibiotic-resistant bacteria priority list. Due to the fast-depleting antibiotic arsenal, clinicians are now resorting to using once-abandoned, highly toxic antibiotics such as the polymyxins and aminoglycosides, creating an urgent need for new antibiotics. Drug repurposing, the application of an approved drug for a new therapeutic indication, is deemed a plausible solution to this problem...
October 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29018828/repurposing-lesogaberan-to-promote-human-islet-cell-survival-and-%C3%AE-cell-replication
#14
Jide Tian, Hoa Dang, Angela Hu, Willem Xu, Daniel L Kaufman
The activation of β-cell's A- and B-type gamma-aminobutyric acid receptors (GABAA-Rs and GABAB-Rs) can promote their survival and replication, and the activation of α-cell GABAA-Rs promotes their conversion into β-cells. However, GABA and the most clinically applicable GABA-R ligands may be suboptimal for the long-term treatment of diabetes due to their pharmacological properties or potential side-effects on the central nervous system (CNS). Lesogaberan (AZD3355) is a peripherally restricted high-affinity GABAB-R-specific agonist, originally developed for the treatment of gastroesophageal reflux disease (GERD) that appears to be safe for human use...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29016968/formalizing-drug-indications-on-the-road-to-therapeutic-intent
#15
Stuart J Nelson, Tudor I Oprea, Oleg Ursu, Cristian G Bologa, Amrapali Zaveri, Jayme Holmes, Jeremy J Yang, Stephen L Mathias, Subramani Mani, Mark S Tuttle, Michel Dumontier
Therapeutic intent, the reason behind the choice of a therapy and the context in which a given approach should be used, is an important aspect of medical practice. There are unmet needs with respect to current electronic mapping of drug indications. For example, the active ingredient sildenafil has 2 distinct indications, which differ solely on dosage strength. In progressing toward a practice of precision medicine, there is a need to capture and structure therapeutic intent for computational reuse, thus enabling more sophisticated decision-support tools and a possible mechanism for computer-aided drug repurposing...
November 1, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28994386/-integrating-clinical-research-into-epidemic-response-the-field-perspective-in-the-ebola-experience
#16
Denis Malvy, Daouda Sissoko, Alseny-Modet Camara
During the 2013-2016 west African Ebola outbreak that affected West Africa, accelerated clinical trials, testing unproven but promising and potentially lifesaving experimental interventions emerged as a key component of the global outbreak. In 2017, no Ebola medical countermeasures had proven antiviral efficacy in patients. However, in September 2014, the World Health Organization inventoried a list of potential drug candidates developed or repurposed with demonstrated antiviral efficacy in vitro or in animal models...
October 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28991240/polypharmacology-based-ceritinib-repurposing-using-integrated-functional-proteomics
#17
Brent M Kuenzi, Lily L Remsing Rix, Paul A Stewart, Bin Fang, Fumi Kinose, Annamarie T Bryant, Theresa A Boyle, John M Koomen, Eric B Haura, Uwe Rix
Targeted drugs are effective when they directly inhibit strong disease drivers, but only a small fraction of diseases feature defined actionable drivers. Alternatively, network-based approaches can uncover new therapeutic opportunities. Applying an integrated phenotypic screening, chemical and phosphoproteomics strategy, here we describe the anaplastic lymphoma kinase (ALK) inhibitor ceritinib as having activity across several ALK-negative lung cancer cell lines and identify new targets and network-wide signaling effects...
October 9, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28984210/a-systematic-analysis-of-fda-approved-anticancer-drugs
#18
Jingchun Sun, Qiang Wei, Yubo Zhou, Jingqi Wang, Qi Liu, Hua Xu
BACKGROUND: The discovery of novel anticancer drugs is critical for the pharmaceutical research and development, and patient treatment. Repurposing existing drugs that may have unanticipated effects as potential candidates is one way to meet this important goal. Systematic investigation of efficient anticancer drugs could provide valuable insights into trends in the discovery of anticancer drugs, which may contribute to the systematic discovery of new anticancer drugs. RESULTS: In this study, we collected and analyzed 150 anticancer drugs approved by the US Food and Drug Administration (FDA)...
October 3, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28978633/international-union-of-basic-and-clinical-pharmacology-cii-pharmacological-modulation-of-h2s-levels-h2s-donors-and-h2s-biosynthesis-inhibitors
#19
REVIEW
Csaba Szabo, Andreas Papapetropoulos
Over the last decade, hydrogen sulfide (H2S) has emerged as an important endogenous gasotransmitter in mammalian cells and tissues. Similar to the previously characterized gasotransmitters nitric oxide and carbon monoxide, H2S is produced by various enzymatic reactions and regulates a host of physiologic and pathophysiological processes in various cells and tissues. H2S levels are decreased in a number of conditions (e.g., diabetes mellitus, ischemia, and aging) and are increased in other states (e.g., inflammation, critical illness, and cancer)...
October 2017: Pharmacological Reviews
https://www.readbyqxmd.com/read/28977822/blocking-epithelial-to-mesenchymal-transition-in-glioblastoma-with-a-sextet-of-repurposed-drugs-the-eis-regimen
#20
Richard E Kast, Nicolas Skuli, Georg Karpel-Massler, Guido Frosina, Timothy Ryken, Marc-Eric Halatsch
This paper outlines a treatment protocol to run alongside of standard current treatment of glioblastoma- resection, temozolomide and radiation. The epithelial to mesenchymal transition (EMT) inhibiting sextet, EIS Regimen, uses the ancillary attributes of six older medicines to impede EMT during glioblastoma. EMT is an actively motile, therapy-resisting, low proliferation, transient state that is an integral feature of cancers' lethality generally and of glioblastoma specifically. It is believed to be during the EMT state that glioblastoma's centrifugal migration occurs...
September 22, 2017: Oncotarget
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