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https://www.readbyqxmd.com/read/29144949/re-genomic-hallmarks-of-localized-non-indolent-prostate-cancer
#1
Anthony Atala
No abstract text is available yet for this article.
December 2017: Journal of Urology
https://www.readbyqxmd.com/read/29144751/dendrimer-stabilized-metal-nanoparticles-as-efficient-catalysts-for-reversible-dehydrogenation-hydrogenation-of-n-heterocycles
#2
Christophe V Deraedt, Rong Ye, Walter Ralston, F Dean Toste, Gabor A Somorjai
Nanoparticles (Pd, Pt, Rh) stabilized by G4OH PAMAM dendrimers and supported in SBA-15 (MNPs/SBA-15 with M= Pd, Pt, Rh) were efficiently used as catalysts in the acceptorless dehydrogenation of tetrahydroquinoline/indoline derivatives in toluene (release of H2) at 130 °C. These catalysts are air stable, very active, robust, and recyclable during the process. The reverse hydrogenation reaction of quinoline derivatives (H2 storage) was also optimized and successfully performed in presence of the same catalysts in toluene at 60 °C under only 1 atmosphere of hydrogen gas...
November 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29144286/effects-and-mechanistic-aspects-of-absorbing-organic-compounds-by-coking-coal
#3
Kejia Ning, Junfeng Wang, Hongxiang Xu, Xianfeng Sun, Gen Huang, Guowei Liu, Lingmei Zhou
Coal is a porous medium and natural absorbent. It can be used for its original purpose after adsorbing organic compounds, its value does not reduce and the pollutants are recycled, and then through systemic circulation of coking wastewater zero emissions can be achieved. Thus, a novel method of industrial organic wastewater treatment using adsorption on coal is introduced. Coking coal was used as an adsorbent in batch adsorption experiments. The quinoline, indole, pyridine and phenol removal efficiencies of coal adsorption were investigated...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29144011/a-gold-catalyzed-domino-cyclization-enabling-rapid-construction-of-diverse-polyheterocyclic-frameworks
#4
Erik Van der Eycken, Yi He, Zhenghua Li, Koen Robeyns, Luc Van Meervelt
We report herein an efficient gold(I)-catalyzed post-Ugi domino dearomatization/ipso-cyclization/Michael sequence that enables access to libraries of diverse (hetero)arene-annulated tricyclic heterocycles. This process affords novel complex polycyclic scaffolds in moderate to good yields from readily available acyclic precursors with excellent chemo-, regio-, and diastereo-selectivity. The power of this strategy has been demonstrated by the rapid synthesis of 40 highly functionalized polyheterocycles bearing indole, pyrrole, (benzo)furan, (benzo)thiophene, pyrazole and electron-rich arenes in two-operational steps...
November 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29143839/real-time-observation-of-the-photoionization-induced-water-rearrangement-dynamics-in-the-5-hydroxyindole-water-cluster-by-time-resolved-ir-spectroscopy
#5
Mitsuhiko Miyazaki, Ayumi Naito, Takamasa Ikeda, Johanna Klyne, Kenji Sakota, Hiroshi Sekiya, Otto Dopfer, Masaaki Fujii
Solvation plays an essential role in controlling the mechanism and dynamics of chemical reactions in solution. The present study reveals that changes in the local solute-solvent interaction have a great impact on the timescale of solvent rearrangement dynamics. Time-resolved IR spectroscopy has been applied to a hydration rearrangement reaction in the monohydrated 5-hydroxyindole-water cluster induced by photoionization of the solute molecule. The water molecule changes the stable hydration site from the indolic NH site to the substituent OH site, both of which provide a strongly attractive potential for hydration...
November 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29143359/indolent-t-lymphoblastic-proliferation-concomitant-to-acinic-cell-carcinoma-mimicking-t-lymphoblastic-lymphoma-case-report-and-literature-review
#6
Hajime Yasuda, Miyuki Tsutsui, Yasunori Ota, Masaru Tanaka, Norio Komatsu
Indolent T-lymphoblastic proliferation (iT-LBP) is a non-clonal benign condition showing extrathymic proliferation of T-lymphoblasts positive for CD3, CD4, CD8, and TdT. Isolated iT-LBP has been observed, but the majority of iT-LBP have been seen in conjunction with other disorders including Castleman disease, hepatocellular carcinoma, follicular dendritic cell tumors, angioimmunoblastic T-cell lymphoma, myasthenia gravis, and acinic cell carcinoma (ACC). The clinical course of iT-LBP is indolent, and no therapy is usually required...
November 15, 2017: Histopathology
https://www.readbyqxmd.com/read/29143105/application-of-dwibs-in-malignant-lymphoma-correlation-between-adc-values-and-ki-67-index
#7
Mengtian Sun, Jingliang Cheng, Yong Zhang, Jie Bai, Feifei Wang, Yun Meng, Zhenqian Li
OBJECTIVES: We investigated the correlation between the apparent diffusion coefficient (ADC) and Ki-67 index using diffusion-weighted whole-body imaging with background body signal suppression (DWIBS), and their utility in evaluating malignant lymphoma cell proliferation. MATERIALS AND METHODS: Seventy-four patients with malignant lymphoma underwent DWIBS within 1 week before pathological confirmation. The ADC value was measured at the site of the pathological examination, and specimens were also stained with Ki-67...
November 15, 2017: European Radiology
https://www.readbyqxmd.com/read/29143068/patient-characteristics-and-outcomes-in-adolescents-and-young-adults-with-classical-philadelphia-chromosome-negative-myeloproliferative-neoplasms
#8
Prajwal Boddu, Lucia Masarova, Srdan Verstovsek, Paolo Strati, Hagop Kantarjian, Jorge Cortes, Zeev Estrov, Sherry Pierce, Naveen Pemmaraju
Little is known about the outcomes of Philadelphia-negative myeloproliferative neoplasms (MPNs) in adolescents and young adults (AYA). We reviewed all patients with essential thrombocythemia (ET), polycythemia vera (PV), and myelofibrosis (MF) treated at our institution from 1988 to 2016 who were aged 16 to 39 years (AYA) and described their outcomes in comparison to older MPN population. Of 2206 patients, 185 (8.3%) were identified as AYA: 105 (57%) ET, 43 (23%) PV, and 37 (20%) MF. The median age was 33 years [range, 16-39], and median follow-up time 3 years [range, 0...
November 15, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29142439/screening-of-norharmane-from-seven-cyanobacteria-by-high-performance-liquid-chromatography
#9
Tunay Karan, Ramazan Erenler
Background: Cyanobacteria, including pharmaceutically and medicinally valuable compounds attract the great attention lately. Norharmane (9H-pyrido (3,4-b) indole found in some cyanobacteria revealed a great number of biological effects. Objective: Seven cyanobacteria were isolated and identified from Yesilirmak River and Gaziosmanpasa University Campus to determine the norharmane content. Materials and Methods: Cyanobacteria collected from Tokat, Turkey were isolated and identified by morphologically...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141848/myc-overexpression-at-the-protein-and-mrna-level-and-cancer-outcomes-among-men-treated-with-radical-prostatectomy-for-prostate-cancer
#10
Andreas Pettersson, Travis Gerke, Kathryn L Penney, Rosina T Lis, Edward C Stack, Nelma Pértega-Gomes, Giorgia Zadra, Svitlana Tyekucheva, Edward L Giovannucci, Lorelei A Mucci, Massimo Loda
BACKGROUND: The proto-oncogene MYC is implicated in prostate cancer progression. Whether MYC tumor expression at the protein or mRNA level is associated with poorer prognosis has not been well studied. METHODS: We conducted a cohort study including 634 men from the Physicians' Health Study and Health Professionals Follow-up Study treated with radical prostatectomy for prostate cancer in 1983-2004 and followed-up for a median of 13.7 years. MYC protein expression was evaluated using immunohistochemistry, and we used Cox regression to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) of its association with lethal prostate cancer (distant metastases/prostate cancer death)...
November 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29141018/evaluation-of-the-proliferation-marker-ki-67-in-a-large-prostatectomy-cohort
#11
Elin Richardsen, Sigve Andersen, Samer Al-Saad, Mehrdad Rakaee, Yngve Nordby, Mona Irene Pedersen, Nora Ness, Thea Grindstad, Ingeborg Movik, Tom Dønnem, Roy Bremnes, Lill-Tove Busund
The tumor proliferation index marker Ki-67 is strongly associated with tumor cell proliferation, growth and progression, and is widely used in routine clinicopathological investigation. Prostate cancer is a complex multifaceted and biologically heterogeneous disease, and overtreatment of localized, low volume indolent tumors, is evident. Here, we aimed to assess Ki-67 expression and related outcomes of 535 patients treated with radical prostatectomy. The percentage of tumor epithelial cells expressing Ki-67 was determined by immunohistochemical assay, both digital image analysis and visual scoring by light microscope were used for quantification...
2017: PloS One
https://www.readbyqxmd.com/read/29140257/synthesis-spectroscopic-characterization-and-antimicrobial-potential-of-certain-new-isatin-indole-molecular-hybrids
#12
Reem I Al-Wabli, Azza S Zakaria, Mohamed I Attia
Molecular hybridization has a wide application in medicinal chemistry to obtain new biologically active compounds. New isatin-indole molecular hybrids 5a-n have been synthesized and characterized by various spectroscopic tools. The in vitro antimicrobial potential of the prepared compounds 5a-n was assessed using diameter of the inhibition zone (DIZ) and minimum inhibitory concentration (MIC) assays against a panel of Gram-negative bacteria, Gram-positive bacteria and fungi. Most of the synthesized compounds 5a-n showed weak activities against Gram-negative bacteria while compounds 5b and 5c exhibited good activities against Gram-positive bacteria...
November 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29140133/ite-inhibits-growth-of-human-pulmonary-artery-endothelial-cells
#13
Ling-Pin Pang, Yan Li, Qing-Yun Zou, Chi Zhou, Wei Lei, Jing Zheng, Shi-An Huang
AIM: Pulmonary arterial hypertension (PAH), a deadly disorder is associated with excessive growth of human pulmonary artery endothelial (HPAECs) and smooth muscle (HPASMCs) cells. Current therapies primarily aim at promoting vasodilation, which only ameliorates clinical symptoms without a cure. 2-(1'H-indole-3'-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE) is an endogenous aryl hydrocarbon receptor (AhR) ligand, and mediates many cellular function including cell growth. However, the roles of ITE in human lung endothelial cells remain elusive...
October 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/29140075/strictosidine-synthase-triggered-enantioselective-synthesis-of-n-substituted-s-3-14-18-19-tetrahydroangustines-as-novel-topoisomerase-i-inhibitors
#14
Yunrui Cai, Huajian Zhu, Zaccary Alperstein, Wenjun Yu, Artem Cherkasov, Hongbin Zou
Monoterpenoid indole alkaloids (MIAs) comprise an important class of molecules for drug discovery, and these have variant carbon skeletons with prominent bioactivities. For instance, in spite of limitations to their use, camptothecins are the only clinically approved Topoisomerase I (Top1) inhibitors. The enzyme STR1, which is key for MIA biosynthesis, was applied to the enantioselective preparation of three N-substituted (S)-3,14,18,19-tetrahydroangustine (THA) derivatives. These non-camptothecin MIAs were shown to have moderate in vitro HepG2 cytotoxicity and Top1 inhibition activities...
November 15, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29139127/combined-transcriptome-and-translatome-analyses-reveal-a-role-for-tryptophan-dependent-auxin-biosynthesis-in-the-control-of-dog1-dependent-seed-dormancy
#15
Bing Bai, Ondřej Novák, Karin Ljung, Johannes Hanson, Leónie Bentsink
The importance of translational regulation during Arabidopsis seed germination has been shown previously. Here the role of transcriptional and translational regulation during seed imbibition of the very dormant DELAY OF GERMINATION 1 (DOG1) near-isogenic line was investigated. Polysome profiling was performed on dormant and after-ripened seeds imbibed for 6 and 24 h in water and in the transcription inhibitor cordycepin. Transcriptome and translatome changes were investigated. Ribosomal profiles of after-ripened seeds imbibed in cordycepin mimic those of dormant seeds...
November 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/29137864/synthesis-molecular-docking-and-qsar-study-of-sulfonamide-based-indoles-as-aromatase-inhibitors
#16
Ratchanok Pingaew, Prasit Mandi, Veda Prachayasittikul, Supaluk Prachayasittikul, Somsak Ruchirawat, Virapong Prachayasittikul
Thirty four of indoles bearing sulfonamides (11-44) were synthesized and evaluated for their anti-aromatase activities. Interestingly, all indole derivatives inhibited the aromatase with IC50 range of 0.7-15.3 μM. Indoles (27-36) exerted higher aromatase inhibitory activity than that of ketoconazole. The phenoxy analogs 28 and 34 with methoxy group were shown to be the most potent compounds with sub-micromolar IC50 values (i.e., 0.7 and 0.8 μM, respectively) without affecting to the normal cell line. Molecular docking demonstrated that the indoles 28, 30 and 34 could occupy the same binding site on the aromatase pocket and share several binding residues with those of the natural substrate (androstenedione), which suggested the competitive binding could be the mode of inhibition of the compounds...
October 20, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29136905/evaluation-of-electrochemical-uv-vis-and-raman-spectroelectrochemical-detection-of-naratriptan-with-screen-printed-electrodes
#17
Carla Navarro Hernández, Daniel Martín-Yerga, María Begoña González-García, David Hernández-Santos, Pablo Fanjul-Bolado
Naratriptan, active pharmaceutical ingredient with antimigraine activity was electrochemically detected in untreated screen-printed carbon electrodes (SPCEs). Cyclic voltammetry and differential pulse voltammetry were used to carry out quantitative analysis of this molecule (in a Britton-Robinson buffer solution at pH 3.0) through its irreversible oxidation (diffusion controlled) at a potential of +0.75V (vs. Ag pseudoreference electrode). Naratriptan oxidation product is an indole based dimer with a yellowish colour (maximum absorption at 320nm) so UV-VIS spectroelectrochemistry technique was used for the very first time as an in situ characterization and quantification technique for this molecule...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136298/tuning-the-f%C3%A3-rster-resonance-energy-transfer-through-self-assembly-approach-for-efficient-white-light-emission-in-aqueous-medium
#18
Pragyan Pallavi, Bahadur Sk, Palak Ahir, Abhijit Patra
A simple and cost-effective methodology employing environmentally benign substances for the fabrication of white-light emitting materials is important for practical applications in the field of lighting and display devices. Designing of purely organic-based white-light emitting system with high quantum efficiency in the aqueous medium is an unmet challenge. With this objective, a new class of pyridoindole based hydrophobic fluorophore 6,7,8,9-tetrapropylpyrido[1,2-a]indole-10-carbaldehye (TPIC) was introduced...
November 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29135287/molecular-modelling-studies-in-explaining-the-higher-gpvi-antagonistic-activity-of-the-racemic-2-4-methoxyphenylsulfonyl-2-3-4-9-tetrahydro-1h-pyrido-3-4-b-indole-3-carboxamide-than-its-enantiomers
#19
S S Bhunia, A K Saxena
The GPVI receptor on the platelets plays a major role in inhibiting arterial thrombosis with limited risk of bleeding and is considered a potential anti-thrombotic target for arterial thrombosis. In the reported anti-thrombotics, tetrahydropyridoindoles, the title compound was the best inhibitor of the collagen mediated platelet aggregation by antagonizing the platelet receptor GPVI. Interestingly, the racemic title compound showed better antagonism (IC50 racemate = 6.7 μM) than either of its enantiomers (IC50 S enantiomer = 25...
November 14, 2017: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/29135267/radical-mediated-dearomatization-of-indoles-with-sulfinate-reagents-for-the-synthesis-of-fluorinated-spirocyclic-indolines
#20
Dmytro Ryzhakov, Maxime Jarret, Régis Guillot, Cyrille Kouklovsky, Guillaume Vincent
The dearomative introduction of trifluoromethyl and 1,1-difluoroethyl radicals, generated from their corresponding sulfinate salts, into the C2 position of indole derivatives allows the diastereoselective synthesis of three-dimensional 3,3-spirocyclic indolines over C-H functionalized indoles.
November 14, 2017: Organic Letters
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