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https://www.readbyqxmd.com/read/29782704/profiling-of-new-psychoactive-substances-nps-by-using-stable-isotope-ratio-mass-spectrometry-irms-study-on-the-synthetic-cannabinoid-5f-pb-22
#1
S Münster-Müller, N Scheid, T Holdermann, S Schneiders, M Pütz
In this paper results of a pilot study on the profiling of the synthetic cannabinoid receptor agonist 5F-PB-22 (5F-QUPIC, pentylfluoro-1H-indole-3-carboxylic acid-8-quinolinyl ester) via isotope ratio mass spectrometry are presented. It is focused on δ13 C, δ15 N and δ2 H isotope ratios, which are determined using elemental analyser (EA) and high temperature elemental analyser (TC/EA) coupled to an isotope ratio mass spectrometer (IRMS). By means of a sample of pure material of 5F-PB-22 it is shown that the extraction of 5F-PB-22 from herbal material, a rapid clean-up procedure, or preparative column chromatography had no influences on the isotope ratios...
May 21, 2018: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29781798/zhouia-spongiae-sp-nov-isolated-from-a-marine-sponge
#2
Lingping Zhuang, Binbin Lin, Fei Qin, Lianzhong Luo
A taxonomic study was carried out on strain HN-Y44T , which was isolated from sponge collected from Yangpu Bay, Hainan, China. Cells of strain HN-Y44T were Gram-stain-negative, non-motile, rod-shaped, yellow-pigmented and grew at 10-40 °C (optimum, 28 °C), at pH 6-10 (optimum, 7-8) and in 0-8 % (w/v) NaCl (optimum, 2-5 %). This isolate was positive for nitrate reduction, denitrification, oxidase, catalase and aesculin hydrolysis, but negative for indole production and urease. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain HN-Y44T belongs to the genus Zhouia and is clearly distinct from the other described species of this genus, Zhouia amylolytica, with a 16S rRNA gene sequence similarity of 96...
May 21, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29780730/robotic-left-lower-sleeve-lobectomy-with-bronchoplasty-for-the-removal-of-a-carcinoid-tumour
#3
Gerald J S Tan, Jun Shang Poon, Paul L Z Khoo, Andrel W H Yoong, Marco Nardini, Joel Dunning
Lung carcinoid tumours constitute approximately 1-2% of all pulmonary tumours. They are derived from enterochromaffin cells, which are also known as 'Kulchitsky cells' and generally have indolent growth and development patterns. Carcinoid tumours are categorized as typical or atypical, depending on the number of mitoses per high power field and the presence of necrosis. In terms of management, surgical resection has been recognized to be the standard treatment for pulmonary carcinoid tumours. To our knowledge, the da Vinci system and robotic surgery have not been applied in sleeve lobectomies and bronchoplasty for the removal of carcinoid tumours in the United Kingdom...
2018: Journal of visualized surgery
https://www.readbyqxmd.com/read/29780727/bronchial-carcinoid-in-anomalous-right-upper-bronchus-a-patient-tailored-bronchoplasty-resection-technique
#4
Francesco Petrella, Alessio Vincenzo Mariolo, Juliana Guarize, Stefano Donghi, Lara Girelli, Stefania Rizzo, Lorenzo Spaggiari
Bronchial carcinoids (BC) are indolent neuroendocrine tumors (NET) that are classified as malignant because they can locally infiltrate and metastasize. Resection is the primary treatment for most localized carcinoid tumors, with lung parenchymal-sparing surgery the favoured objective for patients with central airway tumors. Sleeve bronchoplasty techniques are complex surgical procedures defined as parenchyma-saving because they allow a radical resection with tumor-free margins while preserving the maximum amount of parenchyma...
2018: Journal of visualized surgery
https://www.readbyqxmd.com/read/29780550/c4-h-indole-functionalisation-precedent-and-prospects
#5
REVIEW
Jagadeesh Kalepu, Parthasarathy Gandeepan, Lutz Ackermann, Lukasz T Pilarski
C4-decorated indoles feature in a plethora of bioactive and functional compounds of importance to natural product synthesis, material sciences, as well as crop protection and pharmaceutical industries. Traditionally, their syntheses largely involved harsh stoichiometric metalations and radical reactions. However, transition metal catalysed C-H activation has recently evolved into a powerful strategy for the late-stage diversification of indoles at the C4-H position. Modern photoredox, enzymatic and precious transition metal catalysis represent the key stimuli for developing challenging C-C and C-Het bond forming transformations under mild reaction conditions...
May 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780535/-de-novo-design-of-d-%C3%AF-a-molecules-as-universal-hosts-for-monochrome-and-white-phosphorescent-organic-light-emitting-diodes
#6
Wen-Cheng Chen, Yi Yuan, Ze-Lin Zhu, Zuo-Quan Jiang, Shi-Jian Su, Liang-Sheng Liao, Chun-Sing Lee
Two novel D-σ-A host materials 11,11-bis(9-phenyl-9 H -carbazol-3-yl)-11 H -benzo[4,5]imidazo[1,2- a ]indole (BII-BCz) and 4,4'-(11 H -benzo[4,5]imidazo[1,2- a ]indole-11,11-diyl)bis( N , N -diphenylaniline) (BII-TPA) are synthesized by using the sp3 carbon attached to a newly designed 11 H -benzo[4,5]imidazo[1,2- a ]indole building block to link two electron-donating groups. The resulting materials feature high triplet energy levels, good thermal properties and suitable photophysical properties as universal hosts for full-color phosphorescent organic light-emitting diodes (OLEDs)...
May 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780460/redox-and-photocatalytic-properties-of-a-ni-ii-complex-with-a-macrocyclic-biquinazoline-mabiq-ligand
#7
Michael Grübel, Irene Bosque, Philipp J Altmann, Thorsten Bach, Corinna R Hess
We present a late, first row transition metal photosensitizer that promotes photocatalytic C-C bond formation. The title compound, [Ni(Mabiq)]OTf, as well as its one-electron reduced form, Ni(Mabiq), were synthesized and molecular structures of both were obtained. The electronic structure of the reduced complex additionally was characterized by spectroscopic and DFT computational methods. Notably, [NiII (Mabiq)]OTf is photoactive: reduction of the compound was achieved photochemically upon irradiation at λ = 457 nm and reductive quenching by NEt3 ...
April 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29779412/primary-gastric-lymphoma-epidemiology-clinical-diagnosis-and-treatment
#8
Luis Miguel Juárez-Salcedo, Lubomir Sokol, Julio C Chavez, Samir Dalia
Primary gastric lymphoma (PGL) is the most common extranodal non-Hodgkin lymphoma and represents a wide spectrum of disease, ranging from indolent low-grade marginal zone lymphoma or mucosa-associated lymphoid tissue (MALT) lymphoma to aggressive diffuse large B-cell lymphoma. The PGL is a relatively rare cancer and easily misdiagnosed due to its unspecific symptoms of the digestive tract. The medical literature and ongoing clinical trials were reviewed on the clinical presentation, diagnosis, prognosis, prevention, and treatment of PGL...
January 2018: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/29779219/immunohistochemical-and-molecular-analysis-of-spitzoid-neoplasms-with-pulverocyte-subclones
#9
S M Amin, A M Haugh, J A Bubley, A E Verzì, E A Merkel, C Y Lee, V L Quan, E M Garfield, L M Sholl, B Zhang, P Gerami
BACKGROUND: Clonal naevi are characterized by a focal proliferation of pigmented melanocytes in an otherwise banal naevus. These subclones are often composed of aggregates of larger, epithelioid melanocytes with nuclear atypia and dusty-grey cytoplasmic pigmentation, which are referred to as 'pulverocytes', and this finding may lead to a misdiagnosis of malignant melanoma (MM). AIM: To characterize the significance of subclones of dusty-grey pigmented epithelioid melanocytes within spitzoid neoplasms...
May 20, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29778815/photodegradation-of-atrazine-in-the-presence-of-indole-3-acetic-acid-and-natural-montmorillonite-clay-minerals
#10
Lin Zhang, Haoting Tian, Ran Hong, Chao Wang, Yi Wang, Anping Peng, Cheng Gu
Atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) is a commonly used agricultural herbicide that, as a result, is frequently detected in surface and ground water. In this study, we provide evidence of the photo-oxidation of atrazine under environmentally relevant conditions, specifically, in the presence of natural montmorillonite clay and the ubiquitous phytohormone indole-3-acetic acid (IAA). The reaction is initiated by the generation of hydrated electrons from the photo-ionization of IAA. These electrons react with protons and dissolved oxygen to form hydroxyl radicals, which promote the further degradation of atrazine...
May 17, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29777931/the-order-of-multiple-excited-state-proton-transfer-in-ternary-complex-of-norharmane-and-acetic-acids
#11
Yan-Zhen Ma, Yun-Fan Yang, Wei Shi, Yu-Zhi Song, Yong-Qing Li
Dolores Reyman et al. found the norharmane (9H-pyrido [3,4-b] indole) (NHM) and two acetic acid molecules can form the ternary complex (NHM-2A) in component solvent of dichloromethane and acetic acid via the hydrogen bond chain (J. Lumin. 2014, 148, 64). But the specific reaction details during this process were rarely reported. In this study, we will give an insight into the reasons which promote the occurrence of this reaction as well as its reaction order. The hydrogen bond enhancing behavior in first excited state (S1 ) is verified through the analysis of geometric configurations, infrared spectra, frontier molecular orbitals and potential energy curves...
May 9, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29777683/probing-the-binding-site-of-novel-selective-positive-allosteric-modulators-at-the-m-1-machr
#12
Elham Khajehali, Celine Valant, Manuela Jörg, Andrew B Tobin, P Jeffrey Conn, Craig W Lindsley, Patrick M Sexton, Peter J Scammells, Arthur Christopoulos
Subtype-selective allosteric modulation of the M1 muscarinic acetylcholine (ACh) receptor (M1 mAChR) is an attractive approach for the treatment of numerous disorders, including cognitive deficits. The discovery of benzyl quinolone carboxylic acid, BQCA, a selective M1 mAChR positive allosteric modulator (PAM), spurred the subsequent development of newer generation M1 PAMs representing diverse chemical scaffolds, different pharmacodynamic properties and, in some instances, improved pharmacokinetics. Key exemplar molecules from such efforts include PF-06767832 (N-((3R,4S)-3-hydroxytetrahydro-2H-pyran-4-yl)-5-methyl-4-(4-(thiazol-4-yl)benzyl)pyridine-2-carboxamide), VU6004256 (4,6-difluoro-N-(1S,2S)-2-hydroxycyclohexyl-1-((6-(1-methyl-1H-pyrazol-4-yl)pyridine-3-yl)methyl)-1H-indole-3-carboxamide) and MIPS1780 (3-(2-hydroxycyclohexyl)-6-(2-((4-(1-methyl-1H-pyrazol-4-yl)-benzyl)oxy)phenyl)pyrimidin-4(3H)-one)...
May 16, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29776440/radiological-pleuroparenchymal-fibroelastosis-associated-to-limited-cutaneous-systemic-sclerosis-a-case-report
#13
D Hassoun, S Dirou, P P Arrigoni, C Durant, M Hamidou, A Néel, C Agard
BACKGROUND: Pleuroparenchymal fibroelastosis (PPFE) is a very rare interstitial lung disease (ILD) characterized by progressive fibrotic lesions of the visceral pleura and the sub-pleural parenchyma, affecting predominantly the upper lobes. PPFE may occur in different contextes like bone marrow or lung transplantations, but also in the context of telomeropathy with mutations of telomerase reverse transcriptase (TERT), telomerase RNA component (TERC) or regulator of telomere elongation helicase 1 (RTEL1) genes...
May 18, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29776387/integrative-genomics-approaches-validate-ppyuc11-like-as-candidate-gene-for-the-stony-hard-trait-in-peach-p-persica-l-batsch
#14
Marco Cirilli, Daniela Giovannini, Angelo Ciacciulli, Remo Chiozzotto, Stefano Gattolin, Laura Rossini, Alessandro Liverani, Daniele Bassi
BACKGROUND: Texture is one of the most important fruit quality attributes. In peach, stony hard (SH) is a recessive monogenic trait (hd/hd) that confers exceptionally prolonged firm flesh to fully ripe fruit. Previous studies have shown that the SH mutation affects the fruit ability to synthesize appropriate amounts of indol-3-acetic acid (IAA), which orchestrates the ripening processes through the activation of system 2 ethylene pathway. Allelic variation in a TC microsatellite located within the first intron of PpYUC11-like (a YUCCA-like auxin-biosynthesis gene) has been recently proposed as the causal mutation of the SH phenotype...
May 18, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29775950/drechmerin-h-a-novel-1-2-2-18-diseco-indole-diterpenoid-from-the-fungus-drechmeria-sp-as-a-natural-agonist-of-human-pregnane-x-receptor
#15
Jian-Chao Zhao, Zhi-Lin Luan, Jia-Hao Liang, Zhong-Bin Cheng, Cheng-Peng Sun, Ya-Li Wang, Meng-Yue Zhang, Tian-Yuan Zhang, Yong Wang, Tian-Mei Yang, Ying-Ying Wu, Yi-Xuan Zhang, Xin-Yu Zhao, Xiao-Chi Ma
A novel 1(2), 2(18)-diseco indole diterpenoid, drechmerin H (1), was isolated from the fermentation broth of Drechmeria sp. together with a new indole diterpenoid, 2'-epi terpendole A (3), and a known analogue, terpendole A (2). Their structures were determined by HRESIMS, 1D and 2D NMR, ECD, and X-ray single crystal diffraction analyses as well as quantum chemical calculation. The abosulte configuration of terpendole A (2) was determined for the first time. Compound 1 displayed the significant agonistic effect on pregnane X receptor (PXR) with EC50 value of 134...
May 9, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29775935/design-synthesis-antiproliferative-activity-and-docking-studies-of-quinazoline-derivatives-bearing-2-3-dihydro-indole-or-1-2-3-4-tetrahydroquinoline-as-potential-egfr-inhibitors
#16
Yiqiang OuYang, Wensheng Zou, Liang Peng, Zunhua Yang, Qidong Tang, Mengzi Chen, Shuang Jia, Hong Zhang, Zhou Lan, Pengwu Zheng, Wufu Zhu
Eight series of quinazoline derivatives bearing 2,3-dihydro-indole or 1,2,3,4-tetrahydroquinoline were designed, synthesized and evaluated for the IC50 values against three cancer cell lines (A549, MCF-7 and PC-3). Most of the forty nine target compounds showed excellent antiproliferative activity against one or several cancer cell lines. The compound 13a showed the best activity against A549, MCF-7 and PC-3 cancer cell lines, with the IC50 values of 1.09 ± 0.04 μM, 1.34 ± 0.13 μM and 1.23 ± 0...
May 9, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29775573/indole-3-carbinol-i3c-enhances-the-sensitivity-of-murine-breast-adenocarcinoma-cells-to-doxorubicin-dox-through-inhibition-of-nf-%C3%AE%C2%BA%C3%AE-blocking-angiogenesis-and-regulation-of-mitochondrial-apoptotic-pathway
#17
Subhadip Hajra, Arup Ranjan Patra, Abhishek Basu, Prosenjit Saha, Sudin Bhattacharya
Various epidemiological and preclinical studies have already established the cancer chemopreventive potential of naturally occurring glucosinolate breakdown product Indole-3-Carbinol (I3C) as well as its abilities to induce selective cell death towards malignant cell. Therefore, the objective of the present study is to improve the therapeutic efficacy and prevention of doxorubicin (DOX)-induced toxicity, by the concurrent use of Indole-3-Carbinol (I3C). In this study, I3C was administered (20 mg/kg b.w., p...
May 15, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29775059/intrinsic-antioxidant-potential-of-the-aminoindole-structure-a-computational-kinetics-study-of-tryptamine
#18
Erika N Bentz, Rosana Maria Lobayan, Henar Martinez, Pilar Redondo, Antonio Largo
A computational kinetics study of the antioxidant activity of tryptamine toward HO● and HOO● radicals in water at 298 K has been carried out. Density functional methods have been employed for the quantum chemical calculations and conventional transition state theory was used for rate constants evaluation. Different mechanisms have been considered: radical adduct formation (RAF), single electron transfer (SET), and hydrogen atom transfer (HAT). For the reaction of tryptamine with the hydroxyl radical nearly all channels are diffusion controlled, and the overall rate constant is very high, 6...
May 18, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29774913/biosynthesis-of-the-teleocidin-type-terpenoid-indole-alkaloids
#19
REVIEW
Takayoshi Awakawa, Ikuro Abe
Teleocidin B is a terpenoid indole alkaloid with unique structures including indolactam and cyclic terpenoid, and is a strong protein kinase C activator. Its unique structure and bioactivity have drawn vast interest from chemists and biologists, and numerous isolation and bioactivity studies on this molecule have been performed. Recently, its biosynthetic enzymes were identified, and some of their crystal structures were reported. In this review, we describe the isolation of teleocidin derivatives, biosynthetic studies, and detailed analyses of biosynthetic enzymes, to clarify their biosynthetic reactions toward the enzymatic synthesis of bioactive teleocidin compounds...
May 18, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29774237/an-herbivore-induced-plant-volatile-reduces-parasitoid-attraction-by-changing-the-smell-of-caterpillars
#20
Meng Ye, Nathalie Veyrat, Hao Xu, Lingfei Hu, Ted C J Turlings, Matthias Erb
Herbivore-induced plant volatiles (HIPVs) can mediate tritrophic interactions by attracting natural enemies of insect herbivores such as predators and parasitoids. Whether HIPVs can also mediate tritrophic interactions by influencing the attractiveness of the herbivores themselves remains unknown. We explored this question by studying the role of indole, a common HIPV in the plant kingdom. We found that herbivory-induced indole increases the recruitment of the solitary endoparasitoid Microplitis rufiventris to maize plants that are induced by Spodoptera littoralis caterpillars...
May 2018: Science Advances
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