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https://www.readbyqxmd.com/read/28107530/broad-scale-genetic-diversity-of-cannabis-for-forensic-applications
#1
Christophe Dufresnes, Catherine Jan, Friederike Bienert, Jérôme Goudet, Luca Fumagalli
Cannabis (hemp and marijuana) is an iconic yet controversial crop. On the one hand, it represents a growing market for pharmaceutical and agricultural sectors. On the other hand, plants synthesizing the psychoactive THC produce the most widespread illicit drug in the world. Yet, the difficulty to reliably distinguish between Cannabis varieties based on morphological or biochemical criteria impedes the development of promising industrial programs and hinders the fight against narcotrafficking. Genetics offers an appropriate alternative to characterize drug vs...
2017: PloS One
https://www.readbyqxmd.com/read/28107413/improving-the-conservation-of-mediterranean-chondrichthyans-the-elasmomed-dna-barcode-reference-library
#2
Alessia Cariani, Silvia Messinetti, Alice Ferrari, Marco Arculeo, Juan J Bonello, Leanne Bonnici, Rita Cannas, Pierluigi Carbonara, Alessandro Cau, Charis Charilaou, Najib El Ouamari, Fabio Fiorentino, Maria Cristina Follesa, Germana Garofalo, Daniel Golani, Ilaria Guarniero, Robert Hanner, Farid Hemida, Omar Kada, Sabrina Lo Brutto, Cecilia Mancusi, Gabriel Morey, Patrick J Schembri, Fabrizio Serena, Letizia Sion, Marco Stagioni, Angelo Tursi, Nedo Vrgoc, Dirk Steinke, Fausto Tinti
Cartilaginous fish are particularly vulnerable to anthropogenic stressors and environmental change because of their K-selected reproductive strategy. Accurate data from scientific surveys and landings are essential to assess conservation status and to develop robust protection and management plans. Currently available data are often incomplete or incorrect as a result of inaccurate species identifications, due to a high level of morphological stasis, especially among closely related taxa. Moreover, several diagnostic characters clearly visible in adult specimens are less evident in juveniles...
2017: PloS One
https://www.readbyqxmd.com/read/28107383/effects-of-forced-swimming-stress-on-erk-and-histone-h3-phosphorylation-in-limbic-areas-of-roman-high-and-low-avoidance-rats
#3
Noemi Morello, Ornella Plicato, Maria Antonietta Piludu, Laura Poddighe, Maria Pina Serra, Marina Quartu, Maria Giuseppa Corda, Osvaldo Giorgi, Maurizio Giustetto
Stressful events evoke molecular adaptations of neural circuits through chromatin remodeling and regulation of gene expression. However, the identity of the molecular pathways activated by stress in experimental models of depression is not fully understood. We investigated the effect of acute forced swimming (FS) on the phosphorylation of the extracellular signal-regulated kinase (ERK)1/2 (pERK) and histone H3 (pH3) in limbic brain areas of genetic models of vulnerability (RLA, Roman low-avoidance rats) and resistance (RHA, Roman high-avoidance rats) to stress-induced depression-like behavior...
2017: PloS One
https://www.readbyqxmd.com/read/28106739/transition-metal-complexes-coordinated-by-water-soluble-phosphane-ligands-how-cyclodextrins-can-alter-the-coordination-sphere
#4
Michel Ferreira, Hervé Bricout, Sébastien Tilloy, Eric Monflier
The behaviour of platinum(II) and palladium(0) complexes coordinated by various hydrosoluble monodentate phosphane ligands has been investigated by (31)P{¹H} NMR spectroscopy in the presence of randomly methylated β-cyclodextrin (RAME-β-CD). This molecular receptor can have no impact on the organometallic complexes, induce the formation of phosphane low-coordinated complexes or form coordination second sphere species. These three behaviours are under thermodynamic control and are governed not only by the affinity of RAME-β-CD for the phosphane but also by the phosphane stereoelectronic properties...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28106430/exclusion-and-hierarchy-of-time-scales-lead-to-spatial-segregation-of-molecular-motors-in-cellular-protrusions
#5
I Pinkoviezky, N S Gov
Molecular motors that carry cargo along biopolymer filaments within cells play a crucial role in the functioning of the cell. In particular, these motors are essential for the formation and maintenance of the cellular protrusions that play key roles in motility and specific functionalities, such as the stereocilia in hair cells. Typically, there are several species of motors, carrying different cargos, that share the same track. Furthermore, it was observed that in the mature stereocilia, the different motors occupy well-segregated bands as a function of distance from the tip...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28106402/molecular-orbital-rule-for-quantum-interference-in-weakly-coupled-dimers-%C3%A2-low-energy-giant-conductance-switching-induced-by-orbital-level-crossing
#6
Daijiro Nozaki, Andreas Lücke, Wolf Gero Schmidt
Destructive Quantum interference (QI) in molecular junctions has attracted much attention in recent years. It can tune the conductance of molecular devices dramatically, which implies numerous potential applications in thermoelectric and switching applications. There are several schemes that address and rationalize QI in single molecular devices. Dimers play a particular role in this respect, since the QI signal may disappear, depending on the dislocation of monomers. In this Letter, we derive a simple rule that governs the occurrence of QI in weakly coupled dimer stacks of both alternant and non-alternant polyaromatic hydrocarbons (PAHs) and extends the Tada-Yoshizawa scheme...
January 20, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28106374/extremely-high-barrier-performance-of-organic-inorganic-nanolaminated-thin-films-for-organic-light-emitting-diodes
#7
Kwan Hyuck Yoon, Harrison Sejoon Kim, Kyu Seok Han, Seung Hun Kim, Yong-Eun Koo Lee, Nabeen K Shrestha, Seung Yong Song, Myung Mo Sung
This work presents a novel barrier thin film based on an organic-inorganic nanolaminate, which consists of alternating nanolayers of self-assembled organic layers (SAOLs) and Al2O3. The SAOLs-Al2O3 nanolaminated films were deposited using a combination of molecular layer deposition and atomic layer deposition techniques at 80 °C. Modulation of the relative thickness ratio of the SAOLs and Al2O3 enabled control over the elastic modulus and stress in the films. Furthermore, the SAOLs-Al2O3 thin film achieved a high degree of mechanical flexibility, excellent transmittance (> 95%), and an ultra-low water-vapor transmission rate (2...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28106190/nonadiabatic-photodynamics-and-uv-absorption-spectrum-of-all-trans-octatetraene
#8
Igor Lyskov, Horst Köppel, Christel M Marian
The short-time molecular quantum dynamics of all-trans-octatetraene after electronic excitation to the first bright valence state is theoretically investigated. A semiempirical approach of a multireference configuration interaction based on density functional theory, the so called hybrid DFT/MRCI, in both its original and redesigned formulations, is used for treating the electronic part of the problem. The nuclear kinetic part is defined with the help of symmetry-adapted internal coordinates also suitable for a large amplitude displacement...
January 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28106078/comparative-phosphoproteomics-reveals-an-important-role-of-mkk2-in-banana-musa-spp-cold-signal-network
#9
Jie Gao, Sheng Zhang, Wei-Di He, Xiu-Hong Shao, Chun-Yu Li, Yue-Rong Wei, Gui-Ming Deng, Rui-Bin Kuang, Chun-Hua Hu, Gan-Jun Yi, Qiao-Song Yang
Low temperature is one of the key environmental stresses, which greatly affects global banana production. However, little is known about the global phosphoproteomes in Musa spp. and their regulatory roles in response to cold stress. In this study, we conducted a comparative phosphoproteomic profiling of cold-sensitive Cavendish Banana and relatively cold tolerant Dajiao under cold stress. Phosphopeptide abundances of five phosphoproteins involved in MKK2 interaction network, including MKK2, HY5, CaSR, STN7 and kinesin-like protein, show a remarkable difference between Cavendish Banana and Dajiao in response to cold stress...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106056/investigation-of-changes-in-structure-and-thermodynamic-of-spruce-budworm-antifreeze-protein-under-subfreezing-temperature
#10
Hung Nguyen, Ly Le
The aim of this theoretical work is to investigate of the changes in structure and thermodynamics of spruce budworm antifreeze protein (sbAFP) at low temperatures by using molecular dynamics simulation. The aqueous solution will form ice crystal network under the vaguely hexagonal shape at low temperature and fully represented the characteristics of hydrophobic interaction. Like ice crystal network, the cyclohexane region (including cyclohexane molecules) have enough of the characteristics of hydrophobic interaction...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105908/degreecox-a-network-based-regularization-method-for-survival-analysis
#11
André Veríssimo, Arlindo Limede Oliveira, Marie-France Sagot, Susana Vinga
BACKGROUND: Modeling survival oncological data has become a major challenge as the increase in the amount of molecular information nowadays available means that the number of features greatly exceeds the number of observations. One possible solution to cope with this dimensionality problem is the use of additional constraints in the cost function optimization. LASSO and other sparsity methods have thus already been successfully applied with such idea. Although this leads to more interpretable models, these methods still do not fully profit from the relations between the features, specially when these can be represented through graphs...
December 13, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28105811/palladium-catalyzed-denitrogenative-synthesis-of-aryl-ketones-from-arylhydrazines-and-nitriles-using-o2-as-sole-oxidant
#12
Xu Wang, Yubing Huang, Yanli Xu, Xiaodong Tang, Wanqing Wu, Huanfeng Jiang
An efficient and simple palladium-catalyzed approach for the synthesis of aryl ketones from low-cost nitriles and arylhydrazines using molecular oxygen (O2) as sole oxidant via C-N bond cleavage is reported. Various aryl ketones were synthesized in moderate to good yields under mild conditions. A possible mechanism involving the PdII/Pd0 catalytic cycle process is depicted, and a cationic palladium intermediate was detected by ESI-MS.
January 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28105773/exosomal-biomarkers-of-brain-insulin-resistance-associated-with-regional-atrophy-in-alzheimer-s-disease
#13
Roger J Mullins, Maja Mustapic, Edward J Goetzl, Dimitrios Kapogiannis
: Brain insulin resistance (IR), which depends on insulin-receptor-substrate-1 (IRS-1) phosphorylation, is characteristic of Alzheimer's disease (AD). Previously, we demonstrated higher pSer312-IRS-1 (ineffective insulin signaling) and lower p-panTyr-IRS-1 (effective insulin signaling) in neural origin-enriched plasma exosomes of AD patients vs. CONTROLS: Here, we hypothesized that these exosomal biomarkers associate with brain atrophy in AD. We studied 24 subjects with biomarker-supported probable AD (low CSF Aβ42 )...
January 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28105748/silicone-based-organic-inorganic-hybrid-aerogels-and-xerogels
#14
REVIEW
Taiyo Shimizu, Kazuyoshi Kanamori, Kazuki Nakanishi
Aerogels are attracting increasing attention due to their high thermal insulation ability as well as unique properties such as high porosity, surface area, and transparency. However, low mechanical strengths, originating from their unique porous structure, impede handling, formability, mass production, and extended applications. This minireview focuses on the strengthening of aerogels by several organic-inorganic hybridization strategies. In particular, successful strengthening methodologies, which employ organo-substituted alkoxysilanes as the single precursor for the sol-gel preparations, developed by the authors are highlighted...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28105477/the-role-of-tachysterol-in-vitamin-d-photosynthesis-a-non-adiabatic-molecular-dynamics-study
#15
Cecilia Cisneros, Travis Thompson, Noel Baluyot, Adam C Smith, Enrico Tapavicza
To investigate the role of tachysterol in the photophysical/photochemical regulation of vitamin D photosynthesis, we studied its electronic absorption properties and excited state dynamics using time-dependent density functional theory (TDDFT), second-order approximate coupled cluster theory (CC2), and non-adiabatic surface hopping molecular dynamics in the gas phase. In excellent agreement with experiments, the simulated electronic spectrum shows a broad absorption band with a remarkably higher extinction coefficient than the other vitamin D photoisomers provitamin D, lumisterol, and previtamin D...
January 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28105476/remarkable-solvent-isotope-dependence-on-gelation-strength-in-low-molecular-weight-hydro-gelators
#16
Tjalling R Canrinus, Florian J R Cerpentier, Ben L Feringa, Wesley R Browne
A delicate interplay of anisotropic hydrophobic/hydrophilic, π-π stacking, ionic and hydrogen bond interactions determine the strength of hydrogelators and are considered key factors in efforts to design potent small molecule hydrogelators. Here we show that solvent deuteration and electrolytic strength affect the strength of hydrogels formed from amino acid modified C3-symmetric cyclohexane trisamides profoundly. Gels formed by self-assembly through heating/cooling of solutions or by pH switching show up to a 30 °C increase in their melting temperatures in D2O compared to H2O...
January 20, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28105368/clinical-and-immunologic-correlates-of-response-to-pd-1-blockade-in-a-patient-with-metastatic-renal-medullary-carcinoma
#17
Kathryn E Beckermann, Pradeep C Jolly, Ju Y Kim, Jennifer Bordeaux, Igor Puzanov, W Kimryn Rathmell, Douglas B Johnson
BACKGROUND: Renal medullary carcinoma (RMC) is a rare kidney tumor that occurs in adolescent and young adults, typically in association with sickle cell trait. RMC exhibits rapid disease progression, frequent metastases at diagnosis, and dismal clinical outcomes. Currently available therapies, including cisplatin-based combination chemotherapy, multi-tyrosine kinase, and mTOR inhibitor strategies demonstrate either transient responses or minimal activity. Therefore, further molecular characterization and additional treatment strategies are urgently needed in this aggressive disease...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28105190/prognostic-significance-of-akr1b10-gene-expression-in-hepatocellular-carcinoma-and-surrounding-non-tumorous-liver-tissue
#18
Fuminori Sonohara, Yoshikuni Inokawa, Mitsuhiro Hishida, Mitsuro Kanda, Yoko Nishikawa, Suguru Yamada, Tsutomu Fujii, Hiroyuki Sugimoto, Yasuhiro Kodera, Shuji Nomoto
When assessing outcome in hepatocellular carcinoma (HCC), it is important to consider prognostic factors in background non-tumorous liver tissue as well as in the tumor, since multiple occurrence is associated with background liver status such as hepatitis. The current study aimed to elucidate molecular prognostic predictors that have an association with HCC background non-tumorous tissue. Microarray expression profiling identified aldo-keto reductase family 1, member B10 (AKR1B10) as a putative non-tumorous prognostic factor, and AKR1B10 gene expression was investigated in 158 curatively resected HCC cases by reverse transcription-quantitative polymerase chain reaction...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105184/il-1%C3%AE-promotes-proliferation-and-migration-of-gallbladder-cancer-cells-via-twist-activation
#19
Runsheng Guo, Yiyu Qin, Peidong Shi, Jinbi Xie, Ming Chou, Yueyu Chen
Increasing evidence has revealed a correlation between chronic inflammation and gallbladder cancer (GBC). However, the underlying molecular mechanisms remain to be elucidated. In the present study, secretion of interleukin (IL)-1β was examined in tissues of GBC, chronic cholecystitis and normal gallbladder, as well as in the supernatant of GBC-SD, SGC996 and HIBEpiC cells. The effect of IL-1β on the proliferation and migration of GBC cell lines was also evaluated. In addition, the role of Twist in IL-1β-induced proliferation of GBC cells was also studied...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105178/prognostic-relevance-of-samsn1-expression-in-gastric-cancer
#20
Mitsuro Kanda, Dai Shimizu, Satoshi Sueoka, Shuji Nomoto, Hisaharu Oya, Hideki Takami, Kazuhiro Ezaka, Ryoji Hashimoto, Yuri Tanaka, Daisuke Kobayashi, Chie Tanaka, Suguru Yamada, Tsutomu Fujii, Goro Nakayama, Hiroyuki Sugimoto, Masahiko Koike, Michitaka Fujiwara, Yasuhiro Kodera
The prognosis for patients with advanced gastric cancer (GC) remains poor. The identification of biomarkers relevant to the recurrence and metastasis of GC is advantageous for stratifying patients and proposing novel molecular targets. In the present study the oncological roles of SAM domain, SH3 domain and nuclear localization signals 1 (SAMSN1), a mediator of B-cell function, were elucidated in GC. The expression and methylation status of SAMSN1 were investigated in a panel of 11 GC cell lines. Immunohistochemical staining was performed to determine the pattern of SAMSN1 protein expression in gastric tissues...
December 2016: Oncology Letters
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