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https://www.readbyqxmd.com/read/28093981/chemical-and-biological-aspects-of-the-natural-1-4-benzoquinone-embelin-and-its-semi-synthetic-derivatives
#1
Priti Singh Shuveksh, Subhash Padhye, Rainer Schobert, Bernhard Biersack
BACKGROUND: Like the impressive biological properties of embelin, its chemical aspects have raised the interest of scientists in the field as well. A detailed understanding of the chemistry of embelin is necessary to fully exploit it medicinally. METHODS: Search for embelin isolation and its chemical modifications was carried out using web-based literature searching tools such as Pubmed and Scifinder. Pertinent literature is covered up to 2016. Structures of bioactive embelin derivatives are provided...
January 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28093610/the-new-who-2016-classification-of-brain-tumors-what-neurosurgeons-need-to-know
#2
REVIEW
Rouzbeh Banan, Christian Hartmann
BACKGROUND: The understanding of molecular alterations of tumors has severely changed the concept of classification in all fields of pathology. The availability of high-throughput technologies such as next-generation sequencing allows for a much more precise definition of tumor entities. Also in the field of brain tumors a dramatic increase of knowledge has occurred over the last years partially calling into question the purely morphologically based concepts that were used as exclusive defining criteria in the WHO 2007 classification...
January 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28093406/sphinx-merging-knowledge-based-and-ab-initio-approaches-to-improve-protein-loop-prediction
#3
Claire Marks, Jaroslaw Nowak, Stefan Klostermann, Guy Georges, James Dunbar, Jiye Shi, Sebastian Kelm, Charlotte M Deane
MOTIVATION: Loops are often vital for protein function, however their irregular structures make them difficult to model accurately. Current loop modelling algorithms can mostly be divided into two categories: knowledge-based, where databases of fragments are searched to find suitable conformations; and ab initio, where conformations are generated computationally. Existing knowledge-based methods only use fragments that are the same length as the target, even though loops of slightly different lengths may adopt similar conformations...
January 16, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28087837/off-target-effects-of-neuroleptics-and-antidepressants-on-saccharomyces-cerevisiae
#4
M Caldara, S Graziano, M Gullì, S Cadonici, Nelson Marmiroli
Over the past years, the use of antidepressants and neuroleptics has steadily increased. Although incredibly useful to treat disorders like depression, schizophrenia, epilepsy, or mental retardation, these drugs display many side effects. Toxicogenomic studies aim to limit this problem by trying to identify cellular targets and off-targets of medical compounds. The baker yeast Saccharomyces cerevisiae has been shown to be a key player in this approach, as it represents an incredible toolbox for the dissection of complex biological processes...
January 13, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28081265/the-plasmin-sensitive-protein-pls-in-methicillin-resistant-staphylococcus-aureus-mrsa-is-a-glycoprotein
#5
Isabelle Bleiziffer, Julian Eikmeier, Gottfried Pohlentz, Kathryn McAulay, Guoqing Xia, Muzaffar Hussain, Andreas Peschel, Simon Foster, Georg Peters, Christine Heilmann
Most bacterial glycoproteins identified to date are virulence factors of pathogenic bacteria, i.e. adhesins and invasins. However, the impact of protein glycosylation on the major human pathogen Staphylococcus aureus remains incompletely understood. To study protein glycosylation in staphylococci, we analyzed lysostaphin lysates of methicillin-resistant Staphylococcus aureus (MRSA) strains by SDS-PAGE and subsequent periodic acid-Schiff's staining. We detected four (>300, ∼250, ∼165, and ∼120 kDa) and two (>300 and ∼175 kDa) glycosylated surface proteins with strain COL and strain 1061, respectively...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076863/adverse-renal-effects-of-immune-checkpoint-inhibitors-a-narrative-review
#6
Rimda Wanchoo, Sabine Karam, Nupur N Uppal, Valerie S Barta, Gilbert Deray, Craig Devoe, Vincent Launay-Vacher, Kenar D Jhaveri
BACKGROUND: Cancer immunotherapy, such as anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and anti-programmed death 1 (PD-1), has revolutionized the treatment of malignancies by engaging the patient's own immune system against the tumor rather than targeting the cancer directly. These therapies have demonstrated a significant benefit in the treatment of melanomas and other cancers. SUMMARY: In order to provide an extensive overview of the renal toxicities induced by these agents, a Medline search was conducted of published literature related to ipilimumab-, pembrolizumab-, and nivolumab-induced kidney toxicity...
January 12, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28076467/the-search-for-novel-insecticide-targets-in-the-post-genomics-era-with-a-specific-focus-on-g-protein-coupled-receptors
#7
Michelle Ngai, Mary Ann McDowell
Insects are considered pests globally, implicated in the destruction of agricultural fields and transmission of pathogens that cause deadly human diseases, such as dengue, Zika and malaria. The diversity of the insecticide arsenal has remained stagnant for decades, but the recent rise of insecticide resistance fueled the discovery of novel modes of action, and the power of genomics has reinvigorated this search. This review discusses the importance of comparative and functional insect genomics in the identification of potential gene targets for an insecticidal mode of action with low off-target toxicity...
January 1, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28075450/integrated-analysis-of-differentially-expressed-genes-and-pathways-in-triple%C3%A2-negative-breast-cancer
#8
Cancan Peng, Wenli Ma, Wei Xia, Wenling Zheng
Triple‑negative breast cancer (TNBC) is a heterogeneous disease characterized by an aggressive phenotype and reduced survival. The aim of the present study was to investigate the molecular mechanisms involved in the carcinogenesis of TNBC and to identify novel target molecules for therapy. The differentially expressed genes (DEGs) in TNBC and normal adjacent tissue were assessed by analyzing the GSE41970 microarray data using Qlucore Omics Explorer, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes...
January 4, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28075131/classical-galactosemia-insight-into-molecular-pathomechanisms-by-differential-membrane-proteomics-of-fibroblasts-under-galactose-stress
#9
Simon Staubach, Stefan Müller, Murat Pekmez, Franz-Georg Hanisch
Classical galactosemia, a hereditary metabolic disease caused by the deficiency of galactose-1-phosphate uridyltransferase (GALT; EC 2.7.712), results in an impaired galactose metabolism and serious long-term developmental affection of the CNS and ovaries, potentially related in part to endogenous galactose-induced protein dysglycosylation. In search for galactose-induced changes in membrane raft proteomes of GALT-deficient cells, we performed differential analyses of lipid rafts from patient-derived (Q) and sex- and age-matched control fibroblasts (H) in the presence or absence of the stressor...
January 11, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28074664/recent-advances-in-molecular-biomarkers-for-diabetes-mellitus-a-systematic-review
#10
Ty Lees, Najah Nassif, Ann Simpson, Fatima Shad-Kaneez, Rose Martiniello-Wilks, Yiguang Lin, Allan Jones, Xianqin Qu, Sara Lal
CONTEXT: Diabetes is a growing global metabolic epidemic. Current research is focusing on exploring how the biological processes and clinical outcomes of diabetes are related and developing novel biomarkers to measure these relationships, as this can subsequently improve diagnostic, therapeutic and management capacity. OBJECTIVE: To identify the most recent advances in molecular biomarkers of diabetes and directions that warrant further research. METHODS: Using a systematic search strategy, the MEDLINE, CINAHL and OVID MEDLINE databases were canvassed for articles that investigated molecular biomarkers for diabetes...
January 11, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/28071612/expression-of-raf-kinase-inhibitor-protein-in-human-hepatoma-tissues-by-two-dimensional-gel-electrophoresis-and-matrix-assisted-laser-desorption-ionization-time-of-flight-methods
#11
D A Tsao, Y F Shiau, C S Tseng, H R Chang
PURPOSE: Hepatocellular carcinoma (HCC) is the most common malignant liver tumor. To reduce the mortality and improve the effectiveness of therapy, it is important to search for changes in tumor-specific biomarkers whose function may involve in disease progression and which may be useful as potential therapeutic targets. Materials and Mehtods: In this study, we use two-dimensional polyacrylamide gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry to observe proteome alterations of 12 tissue pairs isolated from HCC patients: Normal and tumorous tissue...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28069923/map7-regulates-axon-collateral-branch-development-in-dorsal-root-ganglia-neurons
#12
Stephen R Tymanskyj, Benjamin Yang, Aditi Falnikar, Angelo C Lepore, Le Ma
: Collateral branches from axons are key components of functional neural circuits that allow neurons to connect with multiple synaptic targets. Like axon growth and guidance, formation of collateral branches depends on the regulation of microtubules, but how such regulation is coordinated to ensure proper circuit development is not known. Based on microarray analysis, we have identified a role for microtubule-associated protein 7 (MAP7) during collateral branch development of dorsal root ganglia (DRG) sensory neurons...
January 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28064377/octopus-a-platform-for-the-virtual-high-throughput-screening-of-a-pool-of-compounds-against-a-set-of-molecular-targets
#13
Eduardo Habib Bechelane Maia, Vinícius Alves Campos, Bianca Dos Reis Santos, Marina Santos Costa, Iann Gabriel Lima, Sandro J Greco, Rosy I M A Ribeiro, Felipe M Munayer, Alisson Marques da Silva, Alex Gutterres Taranto
Octopus is an automated workflow management tool that is scalable for virtual high-throughput screening (vHTS). It integrates MOPAC2016, MGLTools, PyMOL, and AutoDock Vina. In contrast to other platforms, Octopus can perform docking simulations of an unlimited number of compounds into a set of molecular targets. After generating the ligands in a drawing package in the Protein Data Bank (PDB) format, Octopus can carry out geometry refinement using the semi-empirical method PM7 implemented in MOPAC2016. Docking simulations can be performed using AutoDock Vina and can utilize the Our Own Molecular Targets (OOMT) databank...
January 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28064305/upregulation-of-pim2-by-underexpression-of-microrna-135-5p-improves-survival-rates-of-skin-allografts-by-suppressing-apoptosis-of-fibroblast-cells
#14
Hongtu Zhang
BACKGROUND It has been reported that miR-135-5p is involved with many diseases. In this study, we aimed at define the relationship between miR-135-5p level and burn patient survival after skin transplantation. MATERIAL AND METHODS Expression of miR-135-5p and PIM2 was measured using real-time PCR and Western blot analysis in the skin samples collected from burn patients who received skin graft or in the fibroblast cells transfected with miR-135-5p mimics or inhibitors. The regulatory association between miR-135-5p and PIM2 was verified using bioinformatics analysis and luciferase assay...
January 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28062034/integrating-optical-tweezers-dna-tightropes-and-single-molecule-fluorescence-imaging-pitfalls-and-traps
#15
J Wang, J T Barnett, M R Pollard, N M Kad
Fluorescence imaging is one of the cornerstone techniques for understanding how single molecules search for their targets on DNA. By tagging individual proteins, it is possible to track their position with high accuracy. However, to understand how proteins search for targets, it is necessary to elongate the DNA to avoid protein localization ambiguities. Such structures known as "DNA tightropes" are tremendously powerful for imaging target location; however, they lack information about how force and load affect protein behavior...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28060554/current-molecular-and-genetic-aspects-of-pancreatic-cancer-the-role-of-metastasis-associated-proteins-mta-a-review
#16
Efstathios T Pavlidis, Theodoros E Pavlidis
: Purpose/aim: To focus on current molecular and genetic aspects and MTA proteins, since pancreatic cancer is a lethal malignant with poor prognosis. Early diagnosis is essential step, contributing to potential curative resection. MATERIALS AND METHODS: A PubMed search of relevant articles published up to August 2016 was performed to identify current information about pancreatic cancer regarding molecular biomarkers, with emphasis on carcinogenesis, novel therapeutic targets, and MTA proteins...
January 6, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28056525/venetoclax
#17
Amber C King, Tim J Peterson, Troy Z Horvat, Mabel Rodriguez, Laura A Tang
OBJECTIVE: To review the pharmacology, efficacy, and safety of venetoclax for treatment of lymphoid malignancies. DATA SOURCES: A literature search was performed of PubMed and MEDLINE databases (2005 to September 2016), abstracts from the American Society of Hematology and the American Society of Clinical Oncology, and ongoing studies from clinicaltrials.gov. Searches were performed utilizing the following key terms: venetoclax, ABT-199, GDC-199, obatoclax, GX15-070, BCL-2 inhibitor, navitoclax, ABT-263, and Venclexta...
December 1, 2016: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28055966/dual-inhibition-of-pcdh9-expression-by-mir-215-5p-up-regulation-in-gliomas
#18
Chunlin Wang, Qi Chen, Shu Li, Shiting Li, Zhenyu Zhao, Hongliang Gao, Xiaoqiang Wang, Bin Li, Wenchuan Zhang, Yan Yuan, Linzhao Ming, Hua He, Bangbao Tao, Jun Zhong
The clinical prognosis of malignant gliomas is poor and PCDH9 down-regulation is strongly associated with its poor prognosis. But the mechanism of PCDH9 down-regulation is unknown. Abnormal miRNAs profiles regulate tumor phenotypes through inhibiting their target genes and miRNAs could inhibit target genes more efficiently by binding to both the promoter and 3'UTR of target genes. In this study, to search the dual inhibitory miRNAs which suppress PCDH9 expression in gliomas, we performed an integrative analysis of databases including miRDB, TargetScan, microPIR and miRCancer...
December 31, 2016: Oncotarget
https://www.readbyqxmd.com/read/28049198/mechanism-of-2-3-4-5-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-induced-upregulation-of-glutamate-transporter-1-protein-expression-in-mouse-primary-astrocytes
#19
Xiangfan Chen, Wenfeng Hu, Xu Lu, Bo Jiang, Jili Wang, Wei Zhang, Chao Huang
Glutamate transporter-1 (GLT-1), a major glutamate transporter expressed in astrocytes, takes up excess glutamate from the micro-environment in order to prevent excitotoxicity. Drugs that increase GLT-1 expression may have therapeutic effects in disorders associated with neuronal excitotoxicity. 2,3,4',5-tetrahydroxystilbene 2-O-β-D-glucoside (TSG), a monomer of stilbene from polygonummultiflorum, exerts neuroprotection in a range of experimental models such as Alzheimer's disease and brain ischemia. In this study, we evaluated the effect of TSG on GLT-1 protein expression in mouse primary-cultured astrocytes...
January 4, 2017: Pharmacology
https://www.readbyqxmd.com/read/28049027/an-integrated-shotgun-proteomics-and-bioinformatics-approach-for-analysis-of-brain-proteins-from-mcao-model-using-serial-affinity-chromatograph-with-four-active-ingredients-from-shengmai-preparations-as-ligands
#20
Xiao-Xue Fan, Fang Li, Yan-Ni Lv, Yu Zhang, Jun-Ping Kou, Bo-Yang Yu
Identification and validation of disease-relevant target proteins for natural products is an essential component of modern pharmaceutical research. In the present study, an integrated shotgun proteomics and bioinformatics approach was established to profile the interaction of active small molecules derived from ShengMai preparations (SMXZF) with hundreds of endogenously expressed proteins from middle cerebral artery occlusion (MCAO) model. Affinity-based proteomic strategies for isolation and identification of targets for the bioactive components is a classic, but still powerful approach...
January 1, 2017: Neurochemistry International
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