keyword
MENU ▼
Read by QxMD icon Read
search

drug-drug interaction

keyword
https://www.readbyqxmd.com/read/29232585/synthesis-of-new-triterpenic-monomers-and-dimers-as-potential-antiproliferative-agents-and-their-molecular-docking-studies
#1
Aasim Saeed, Hidayat Hussain, Umair Shamraiz, Najeeb Ur Rehman, Husain Yar Khan, Amin Badshah, Lucie Heller, René Csuk, Majid Ali, Ajmal Khan, Ahmed Al-Harrasi
In the current investigation, new monomers of myrrhanone B and lupeolic acid were prepared via reaction of triterpenic acids with linkers in the presence of K2CO3. In addition, new bis-myrrhanone B homodimers, myrrhanone B-myrrhanol B heterodimers, and bis-myrrhanone β-boswellic acids heterodimer were prepared. Evaluation of these compounds on the proliferation of four different human cancer cell lines, viz., FaDu (pharynx carcinoma), A2780 (ovarian carcinoma), HT29 (colon adenocarcinoma) and A375 (malignant melanoma) has been performed...
December 9, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29232282/selected-food-herb-drug-interactions-mechanisms-and-clinical-relevance
#2
Cecilia N Amadi, Amaka A Mgbahurike
BACKGROUND: Food/Herb-drug interactions have become a major problem in health care. These interactions can lead to loss of therapeutic efficacy or toxic effects of drugs. AREAS OF UNCERTAINTY: To probe the clinical relevance of such interactions, the impact of food/herb intake on the clinical effects of drug administration has to be evaluated. Failure to identify and efficiently manage food-drug interactions can lead to serious consequences. A comprehensive knowledge of the mechanisms that underpin variability in disposition will help optimize therapy...
November 22, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/29232137/inhibition-of-human-cyp3a4-by-rationally-designed-ritonavir-like-compounds-impact-and-interplay-of-the-side-group-functionalities
#3
Eric R Samuels, Irina Sevrioukova
Structure-function relationships of nine rationally designed ritonavir-like compounds were investigated to better understand the ligand binding and inhibitory mechanism in human drug-metabolizing cytochrome P450 3A4 (CYP3A4). The analogs had a similar backbone and pyridine and tert-butyloxycarbonyl (Boc) as the heme-ligating and terminal groups, respectively. N-Isopropyl, N-cyclopentyl, or N-phenyl were the R1-side group substituents alone (compounds 5a-c) or in combination with phenyl or indole at the R2 position (8a-c and 8d-f subseries, respectively)...
December 12, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29232104/the-effects-of-biological-fluids-on-colloidal-stability-and-sirna-delivery-of-a-ph-responsive-micellar-nanoparticle-delivery-system
#4
Dominic W Malcolm, Jomy J Varghese, Janet E Sorrells, Catherine E Ovitt, Danielle S W Benoit
Nanoparticles (NP) interact with complex protein milieus in biological fluids, and these interactions have profound effects on NP physicochemical properties and function. Surprisingly, most studies neglect the impact of these interactions, especially with respect to NP-mediated siRNA delivery. Here, the effects of serum on colloidal stability and siRNA delivery of a pH-responsive micellar NP delivery system were characterized. Results show cationic NP-siRNA complexes aggregate in  2% serum in buffer, but are stable in serum-free media...
December 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/29231944/stability-of-plant-virus-based-nanocarriers-in-gastrointestinal-fluids
#5
Alberto Berardi, David J Evans, Francesca Baldelli Bombelli, George P Lomonossoff
Cowpea mosaic virus (CPMV) is a plant virus which is being extensively investigated as a drug delivery and vaccine nanocarrier for parenteral administration. However, to date little is known about the suitability of plant-based nanocarriers for oral delivery. In this study, the colloidal (i.e. aggregation), physical (i.e. denaturation) and chemical (i.e. digestion of the polypeptides) stability of CPMV and its empty virus-like particles (eVLPs) in conditions resembling the gastrointestinal fluids were evaluated...
December 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/29231255/the-structural-and-functional-reliability-of-circulins-of-chassalia-parvifolia-for-peptide-therapeutic-scaffolding
#6
B Senthilkumar, R Rajasekaran
Computational methods have refined the mode of peptide drug designing to a new plateau recently. Circulin, a 30 residue natural plant polypeptide acts as a plant defensive peptide. Additional to its antimicrobial activity it also possesses an inhibitory cytopathic effect on the replication of human immunodeficiency virus (HIV). Stable Circulin can be a functionally able template for scaffolding peptide based drugs. Hence, structural stability of Chassalia parvifolia, Circulin A (1BH4) and Circulin B (2ERI) was computationally investigated...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29231137/therapeutic-role-of-harmalol-targeting-nucleic-acids-biophysical-perspective-and-in-vitro-cytotoxicity
#7
Sarita Sarkar, Kakali Bhadra
BACKGROUND: Harmalol, a beta carboline alkaloid, shows remarkable importance in the contemporary biomedical research and drug discovery programs. With time, there is growing interest in search for anti-cancer drugs of plant origin with high efficacy, low toxicity and minimum side effects. Most of the chemotherapeutic agents due to their non-selective nature and dose limiting toxicity, use is often restricted, necessitating search for newer drugs having greater potentiality. OBJECTIVE: The review highlighted the interaction of harmalol with nucleic acids of different motifs as sole target biomolecules and in vitro cytotoxicity of the alkaloid in human cancer cell lines with special emphasis on its apoptotic induction ability...
December 11, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/29231058/efaverinz-and-nano-gold-loaded-mannosylated-niosomes-a-host-cell-targeted-topical-hiv-1-prophylaxis-via-thermogel-system
#8
Tanushree Malik, Gaurav Chauhan, Goutam Rath, Rohan N Kesarkar, Abhay S Chowdhary, Amit K Goyal
Sexual dissemination of Human Immunodeficiency Virus-1 (HIV-1) is the prime mode of its spread. Topical microbicidal approach has gained much attention, but no real success is observed till date, either due to toxicity or resistance of active moieties and the lack of efficient drug delivery approaches. In this research protocol, a unique combination approach of a standard drug moiety, that is, Efaverinz (EFV) and a nanometal, that is, gold nanoparticles (GNPs) was tried. Both these candidates were delivered through a mannosylated niosomal system, to exploit protein (lectins present on HIV host cells) - carbohydrate (oligosaccharides such as mannan present on HIV gp-120 receptor) interaction...
December 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29230631/the-investigation-of-ceranib-2-on-apoptosis-and-drug-interaction-with-carboplatin-in-human-non-small-cell-lung-cancer-cells-in-vitro
#9
Merve Yildiz-Ozer, Pinar Oztopcu-Vatan, Gokhan Kus
Ceramide is found to be involved in inhibition of cell division and induction of apoptosis in certain tumour cells. Ceranib-2 is an agent that increases ceramide levels by inhibiting ceramidase in cancer cells. Therefore, we aimed to investigate the effects of ceranib-2 on cell survival, apoptosis and interaction with carboplatin in human non-small cell lung cancer cells. The cytotoxic effect of ceranib-2 (1-100 µM) was determined by MTT assay in human lung adenocarcinoma (A549) and large cell lung carcinoma (H460) cells...
December 11, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29229897/integrative-analysis-to-identify-common-genetic-markers-of-metabolic-syndrome-dementia-and-diabetes
#10
Weihong Zhang, Linlin Xin, Ying Lu
BACKGROUND Emerging data have established links between systemic metabolic dysfunction, such as diabetes and metabolic syndrome (MetS), with neurocognitive impairment, including dementia. The common gene signature and the associated signaling pathways of MetS, diabetes, and dementia have not been widely studied. MATERIAL AND METHODS We exploited the translational bioinformatics approach to choose the common gene signatures for both dementia and MetS. For this we employed "DisGeNET discovery platform". RESULTS Gene mining analysis revealed that a total of 173 genes (86 genes common to all three diseases) which comprised a proportion of 43% of the total genes associated with dementia...
December 12, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29229851/structure-based-prediction-of-ligand-protein-interactions-on-a-genome-wide-scale
#11
Howook Hwang, Fabian Dey, Donald Petrey, Barry Honig
We report a template-based method, LT-scanner, which scans the human proteome using protein structural alignment to identify proteins that are likely to bind ligands that are present in experimentally determined complexes. A scoring function that rapidly accounts for binding site similarities between the template and the proteins being scanned is a crucial feature of the method. The overall approach is first tested based on its ability to predict the residues on the surface of a protein that are likely to bind small-molecule ligands...
December 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29229833/kinetics-of-drug-ribosome-interactions-defines-the-cidality-of-macrolide-antibiotics
#12
Maxim S Svetlov, Nora Vázquez-Laslop, Alexander S Mankin
Antibiotics can cause dormancy (bacteriostasis) or induce death (cidality) of the targeted bacteria. The bactericidal capacity is one of the most important properties of antibacterial agents. However, the understanding of the fundamental differences in the mode of action of bacteriostatic or bactericidal antibiotics, especially those belonging to the same chemical class, is very rudimentary. Here, by examining the activity and binding properties of chemically distinct macrolide inhibitors of translation, we have identified a key difference in their interaction with the ribosome, which correlates with their ability to cause cell death...
December 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29229832/fkbp12-contributes-to-%C3%AE-synuclein-toxicity-by-regulating-the-calcineurin-dependent-phosphoproteome
#13
Gabriela Caraveo, Martin Soste, Valentina Cappelleti, Saranna Fanning, Damian B van Rossum, Luke Whitesell, Yanmei Huang, Chee Yeun Chung, Valeriya Baru, Sofia Zaichick, Paola Picotti, Susan Lindquist
Calcineurin is an essential Ca2+-dependent phosphatase. Increased calcineurin activity is associated with α-synuclein (α-syn) toxicity, a protein implicated in Parkinson's Disease (PD) and other neurodegenerative diseases. Calcineurin can be inhibited with Tacrolimus through the recruitment and inhibition of the 12-kDa cis-trans proline isomerase FK506-binding protein (FKBP12). Whether calcineurin/FKBP12 represents a native physiologically relevant assembly that occurs in the absence of pharmacological perturbation has remained elusive...
December 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29229604/transcription-factor-activities-enhance-markers-of-drug-sensitivity-in-cancer
#14
Luz M Garcia-Alonso, Francesco Iorio, Angela Matchan, Nuno A Fonseca, Patricia Jaaks, Gareth Peat, Miguel Pignatelli, Fiammetta Falcone, Cyril H Benes, Ian Dunham, Graham R Bignell, Simon McDade, Mathew J Garnett, Julio Saez-Rodriguez
Transcriptional dysregulation induced by aberrant Transcription factors (TFs) is a key feature of cancer, but its global influence on drug sensitivity has not been examined. Here we infer the transcriptional activity of 127 TFs through analysis of RNA-seq gene expression data newly generated for 448 cancer cell lines, combined with publicly available datasets to survey a total of 1,056 cancer cell lines and 9,250 primary tumors. Predicted TF activities are supported by their agreement with independent shRNA essentiality profiles and homozygous gene deletions, and recapitulate mutant-specific mechanisms of transcriptional dysregulation in cancer...
December 11, 2017: Cancer Research
https://www.readbyqxmd.com/read/29229504/an-inhibitory-action-of-chitosan-nanoparticles-against-pathogenic-bacteria-and-fungi-and-their-potential-applications-as-biocompatible-antioxidants
#15
D MubarakAli, F LewisOscar, V Gopinath, Naify S Alharbi, Sulaiman Ali Alharbi, N Thajuddin
Chitosan is the second most abundant polymer obtained from the byproduct of seafood. Chitosan and its derivatives and chitosan loaded drugs are the recent area of interest against microbial pathogenesis. The cationic chitosan nanoparticles (ChNPs) interact with the anionic surfaces of the microbial cell membrane, which promotes antimicrobial activity. Although, ChNPs are potential against pathogenic microbes, selection of adaptable, suitable and cost effective synthesis method is much important. In the present study, ChNPs were synthesized adopting ionic gelation using sodium tripolyphosphate as a cross linking agent and characterized by FTIR, DLS, SEM and TEM analysis...
December 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29229501/proceedings-of-the-2017-santa-fe-bone-symposium-insights-and-emerging-concepts-in-the-management-of-osteoporosis
#16
REVIEW
E Michael Lewiecki, John P Bilezikian, John J Carey, Richard M Dell, Catherine M Gordon, Steven T Harris, Michael R McClung, Paul D Miller, Michael Rosenblatt
The 18th Annual Santa Fe Bone Symposium was held on August 4-5, 2017, in Santa Fe, New Mexico, USA. The symposium convenes health-care providers and clinical researchers to present and discuss clinical applications of recent advances in research of skeletal diseases. The program includes lectures, oral presentations by endocrinology fellows, case-based panel discussions, and breakout sessions on topics of interest, with emphasis on participation and interaction of all participants. Topics included the evaluation and treatment of adult survivors with pediatric bone diseases, risk assessment and management of atypical femur fractures, nonpharmacologic strategies in the care of osteoporosis, and skeletal effects of parathyroid hormone with opportunities for therapeutic intervention...
November 20, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29229491/could-cannabis-liberalisation-lead-to-wider-changes-in-drug-policies-and-outcomes
#17
Brendan Hughes, Lucas Wiessing, Don Des Jarlais, Paul Griffiths
Cannabis policies are changing in some countries. This may have consequences that extend beyond cannabis-specific outcomes, such as an impact on the consumption patterns of other substances. Changes in cannabis policies may also influence policy responses to other drugs, as countries re-assess the balance between law enforcement and public health objectives. If this happens, it could have important health and social consequences, especially in those countries where a 'war on drugs' policy perspective has inhibited investment in evidence based responses in areas such as treatment and harm reduction...
December 8, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29229473/cystic-fibrosis-research-topics-featured-at-the-14th-ecfs-basic-science-conference-chairman-s-summary
#18
Marcus A Mall, Tzyh-Chang Hwang, Ineke Brakman
In recent years, tremendous progress has been made in the development of novel drugs targeting the basic defect in patients with cystic fibrosis (CF). This breakthrough is based on a solid foundation of knowledge on CFTR's function in health and how mutations in CFTR cause CF multi-organ disease. This knowledge has been collected and continuously expanded by an active and persistent CF research community and has paved the way for precision medicine for CF. Since 2004, the European Cystic Fibrosis Society (ECFS) has held an annual Basic Science Conference that has evolved as an international forum for interdisciplinary discussion of hot topics and unsolved questions related to CF research...
December 8, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29229429/semi-mechanistic-pharmacokinetic-pharmacodynamic-modelling-of-antibiotic-drug-combinations
#19
REVIEW
Margreke J E Brill, Anders N Kristoffersson, Chenyan Zhao, Elisabet I Nielsen, Lena E Friberg
BACKGROUND: Deriving suitable dosing regimens for antibiotic combination therapy poses several challenges as the drug interaction can be highly complex, the traditional pharmacokinetic/pharmacodynamic (PK/PD) index methodology cannot be applied straightforwardly, and exploring all possible dose combinations is unfeasible. Therefore, semi-mechanistic PKPD models developed based on in vitro single and combination experiments can be valuable to suggest suitable combination dosing regimens...
December 8, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29229225/design-synthesis-and-pharmacological-evaluation-of-new-acyl-sulfonamides-as-potent-and-selective-bcl-2-inhibitors
#20
Xiaohua Liu, Yu Zhang, Wenjing Huang, Wenfu Tan, Ao Zhang
The antiapoptotic protein Bcl-2, overexpressed in many tumor cells, is an attractive target for potential small molecule anticancer drug discovery. Herein, we report a different structural modification approach on ABT-263 by merging the piperazinyl-phenyl fragment into a bicyclic framework leading to a series of novel analogues, among which tetrahydroisoquinoline 13 was nearly equally potent against Bcl-2 as ABT-263. Further SAR in the P4-interaction pocket affored the difluoroazetidine substituted analogue 55, which retained good Bcl-2 activity with improved Bcl-2/Bcl-xL selectivity...
December 5, 2017: Bioorganic & Medicinal Chemistry
keyword
keyword
111139
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"