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https://www.readbyqxmd.com/read/27911495/synthesis-and-evaluation-of-caged-sirna-with-terminal-single-vitamin-e-modification
#1
Jiali Yang, Lijia Yu, Liangliang Zhang, Xingsu Long, Yuzhuo Ji, Xinjing Tang
RNA-induced gene silencing has been widely applied as a powerful research tool in drug development due to its sequence-specific degradation of target mRNA. Conditional regulation of gene functions with small interfering RNAs (siRNAs) is highly useful, especially when specific gene expression regulation with spatiotemporal resolution and amplitude is desired. Here, the synthesis of a series of new caged siRNAs with vitamin E (vitE) modification and/or a single photolabile linker at the 5' terminal is described...
December 1, 2016: Current Protocols in Nucleic Acid Chemistry
https://www.readbyqxmd.com/read/27911483/effects-of-dietary-heme-iron-and-exercise-training-on-abdominal-fat-accumulation-and-lipid-metabolism-in-high-fat-diet-fed-mice
#2
Masanori Katsumura, Shoko Takagi, Hana Oya, Shohei Tamura, Takaoki Saneyasu, Kazuhisa Honda, Hiroshi Kamisoyama
Animal by-products can be recycled and used as sources of essential nutrients. Water-soluble heme iron (WSHI), a functional food additive for supplementing iron, is produced by processing animal blood. In this study, we investigated the effects of dietary supplementation of 3% WSHI and exercise training for 4 weeks on the accumulation of abdominal fat and lipid metabolism in mice fed high-fat diet. Exercise-trained mice had significantly less perirenal adipose tissue, whereas WSHI-fed mice tended to have less epididymal adipose tissue...
December 2, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27911482/meat-quality-and-intramuscular-fatty-acid-composition-of-catria-horse
#3
Maria Federica Trombetta, Francesco Nocelli, Marina Pasquini
In order to extend scientific knowledge on autochthonous Italian equine meat, the physical-chemical parameters of Catria Horse Longissimus thoracis (LT) muscle and its nutritional characteristics have been investigated. Ten steaks of Catria foal raised at pasture and fattened indoors for 2 months were dissected, and LT muscle was analyzed for chemical composition, total iron, drip loss, colorimetric characteristics, intramuscular fat, fatty acid profile and nutritional indexes. Steak dissection showed that LT muscle accounted for 36...
December 2, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27911478/modulation-of-whistle-production-related-to-training-sessions-in-bottlenose-dolphins-tursiops-truncatus-under-human-care
#4
Juliana Lopez Marulanda, Olivier Adam, Fabienne Delfour
Bottlenose dolphins are highly social cetaceans with an extensive sound production including clicks, burst-pulsed sounds, and whistles. Some whistles, known as signature whistles, are individually specific. These acoustic signatures are commonly described as being emitted in contexts of stress during forced isolation and as group cohesion calls. Interactions between humans and captive dolphins is largely based on positive reinforcement conditioning within several training/feeding sessions per day. Vocal behavior of dolphins during these interactions might vary...
November 2016: Zoo Biology
https://www.readbyqxmd.com/read/27911472/solid-state-emission-of-the-anthracene-o-carborane-dyad-from-the-twisted-intramolecular-charge-transfer-in-the-crystalline-state
#5
Hirofumi Naito, Kenta Nishino, Yasuhiro Morisaki, Kazuo Tanaka, Yoshiki Chujo
The emission process of the o-carborane dyad with anthracene originating from the twisted intramolecular charge transfer (TICT) state in the crystalline state is described. The anthracene-o-carborane dyad was synthesized and its optical properties were investigated. Initially, the dyad had aggregation- and crystallization-induced emission enhancement (AIEE and CIEE) properties via the intramolecular charge transfer (ICT) state. Interestingly, the dyad presented the dual-emissions assigned to both locally excited (LE) and ICT states in solution...
December 1, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27911467/a-systematic-investigation-of-the-charging-effect-in-scanning-electron-microscopy-for-metal-nanostructures-on-insulating-substrates
#6
R Flatabø, A Coste, M M Greve
Scanning electron microscopy is perhaps the most important method for investigating and characterizing nanostructures. A well-known challenge in scanning electron microscopy is the investigation of insulating materials. As insulating materials do not provide a path to ground they accumulate charge, evident as image drift and image distortions. In previous work, we have seen that sample charging in arrays of metal nanoparticles on glass substrates leads to a shrinkage effect, resulting in a measurement error in the nanoparticle dimension of up to 15% at 10 kV and a probe current of 80 ± 10 pA...
December 2, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27911457/what-is-the-impact-of-extracorporeal-shock-wave-lithotripsy-on-semen-parameters-a-systematic-review-and-meta-analysis
#7
Mohammad H Radfar, Nasser Simforoosh, Mehdi Sotoudeh, Mehdi H Ramezani, Mohammad J Mollakoochakian, Maryam Nikravesh, Hamidreza Shemshaki
BACKGROUND: Extracorporeal shock wave lithotripsy (ESWL) is an important tool for the management of urolithiasis. The effects of shockwaves on tissues are established. The aim of this meta-analysis is to evaluate the microscopic semen characteristics of young men before and after ESWL treatment for lower ureteral calculi. METHODS: Literature searches were performed following the Cochrane guidelines. We conducted a systematic review and meta-analysis that included six trials that investigated the effects of ESWL on semen parameters, including sperm concentration, motility, and hematospermia...
December 2, 2016: Urologia
https://www.readbyqxmd.com/read/27911452/rationally-encapsulated-gold-nanorods-improving-both-linear-and-nonlinear-photoacoustic-imaging-contrast-in-vivo
#8
Fei Gao, Linyi Bai, Siyu Liu, Ruochong Zhang, Jingtao Zhang, Xiaohua Feng, Yuanjin Zheng, Yanli Zhao
Photoacoustic tomography has emerged as a promising non-invasive imaging technique that integrates the merits of high optical contrast with high ultrasound resolution in deep scattering medium. Unfortunately, the blood background in vivo seriously impedes the quality of imaging due to its comparable optical absorption with contrast agents, especially in conventional linear photoacoustic imaging modality. In this study, we demonstrated that two hybrids consisting of gold nanorods (Au NRs) and zinc tetra(4-pyridyl)porphyrin (ZnTPP) exhibited a synergetic effect in improving optical absorption, conversion efficiency from light to heat, and thermoelastic expansion, leading to a notable enhancement in both linear (four times greater) and nonlinear (more than six times) photoacoustic signals as compared with conventional Au NRs...
December 2, 2016: Nanoscale
https://www.readbyqxmd.com/read/27911451/influence-of-specific-intermolecular-interactions-on-the-thermal-and-dielectric-properties-of-bulk-polymers-atomistic-molecular-dynamics-simulations-of-nylon-6
#9
N V Lukasheva, D A Tolmachev, V M Nazarychev, J M Kenny, S V Lyulin
Specific intermolecular interactions, in particular H-bonding, have a strong influence on the structural, thermal and relaxation characteristics of polymers. We report here the results of molecular dynamics simulations of Nylon 6 which provides an excellent example for the investigation of such an influence. To demonstrate the effect of proper accounting for H-bonding on bulk polymer properties, the AMBER99sb force field is used with two different parametrization approaches leading to two different sets of partial atomic charges...
December 2, 2016: Soft Matter
https://www.readbyqxmd.com/read/27911447/the-enlarged-extraocular-muscle-to-relax-reflect-or-refer
#10
F Shafi, P Mathewson, P Mehta, H S Ahluwalia
PurposeExtraocular muscle enlargement (EOME) is most commonly associated with thyroid eye disease, but there are other causes. We report our outcomes of investigating and managing non-thyroid-related EOME (NTR-EOME).MethodsRetrospective consecutive case series. Sixteen patients identified by clinical features and orbital imaging. Patient demographics, radiological features, and adjuvant tests including biopsy and final diagnosis were recorded.ResultsMean age at presentation 59.3 years (range 24-89 years). Mean follow-up 3...
December 2, 2016: Eye
https://www.readbyqxmd.com/read/27911443/transient-mitochondrial-dna-double-strand-breaks-in-mice-cause-accelerated-aging-phenotypes-in-a-ros-dependent-but-p53-p21-independent-manner
#11
Milena Pinto, Alicia M Pickrell, Xiao Wang, Sandra R Bacman, Aixin Yu, Aline Hida, Lloye M Dillon, Paul D Morton, Thomas R Malek, Siôn L Williams, Carlos T Moraes
We observed that the transient induction of mtDNA double strand breaks (DSBs) in cultured cells led to activation of cell cycle arrest proteins (p21/p53 pathway) and decreased cell growth, mediated through reactive oxygen species (ROS). To investigate this process in vivo we developed a mouse model where we could transiently induce mtDNA DSBs ubiquitously. This transient mtDNA damage in mice caused an accelerated aging phenotype, preferentially affecting proliferating tissues. One of the earliest phenotypes was accelerated thymus shrinkage by apoptosis and differentiation into adipose tissue, mimicking age-related thymic involution...
December 2, 2016: Cell Death and Differentiation
https://www.readbyqxmd.com/read/27911440/the-prey-s-scent-volatile-organic-compound-mediated-interactions-between-soil-bacteria-and-their-protist-predators
#12
Kristin Schulz-Bohm, Stefan Geisen, E R Jasper Wubs, Chunxu Song, Wietse de Boer, Paolina Garbeva
Protists are major predators of bacteria in soils. However, it remains unknown how protists sense their prey in this highly complex environment. Here, we investigated whether volatile organic compounds (VOCs) of six phylogenetic distinct soil bacteria affect the performance of three different soil protists and how that relates to direct feeding interactions. We observed that most bacteria affected protist activity by VOCs. However, the response of protists to the VOCs was strongly dependent on both the bacterial and protist interacting partner...
December 2, 2016: ISME Journal
https://www.readbyqxmd.com/read/27911439/evidence-for-a-role-of-viruses-in-the-thermal-sensitivity-of-coral-photosymbionts
#13
Rachel Ashley Levin, Christian Robert Voolstra, Karen Dawn Weynberg, Madeleine Josephine Henriette van Oppen
Symbiodinium, the dinoflagellate photosymbiont of corals, is posited to become more susceptible to viral infections when heat-stressed. To investigate this hypothesis, we mined transcriptome data of a thermosensitive and a thermotolerant type C1 Symbiodinium population at ambient (27 °C) and elevated (32°C) temperatures. We uncovered hundreds of transcripts from nucleocytoplasmic large double-stranded DNA viruses (NCLDVs) and the genome of a novel positive-sense single-stranded RNA virus (+ssRNAV). In the transcriptome of the thermosensitive population only, +ssRNAV transcripts had remarkable expression levels in the top 0...
December 2, 2016: ISME Journal
https://www.readbyqxmd.com/read/27911437/the-role-of-the-proteasome-in-aml
#14
REVIEW
C M Csizmar, D-H Kim, Z Sachs
Acute myeloid leukemia (AML) is deadly hematologic malignancy. Despite a well-characterized genetic and molecular landscape, targeted therapies for AML have failed to significantly improve clinical outcomes. Over the past decade, proteasome inhibition has been demonstrated to be an effective therapeutic strategy in several hematologic malignancies. Proteasome inhibitors, such as bortezomib and carfilzomib, have become mainstays of treatment for multiple myeloma and mantle cell lymphoma. In light of this success, there has been a surge of literature exploring both the role of the proteasome and the effects of proteasome inhibition in AML...
December 2, 2016: Blood Cancer Journal
https://www.readbyqxmd.com/read/27911426/-ocular-hydrodynamics-after-phacoemulsification-cataract-surgery-in-patients-with-primary-open-angle-glaucoma
#15
E A Kalizhnikova, O I Lebedev, O V Shchipacheva, G G Pecheritsa
AIM: To investigate parameters of intraocular fluid outflow after phacoemulsification of cataract in patients with primary open-angle glaucoma (POAG). MATERIAL AND METHODS: The study involved 153 cataract patients (153 eyes), most of whom also had POAG. The patients were divided into three groups: group 1 - 51 patients (51 eyes) with cataract but no glaucoma, group 2 - 51 patients (51 eyes) with cataract and early POAG, and group 3 - 51 patients (51 eyes) with cataract and advanced POAG...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911422/-diagnostic-potential-of-optical-coherence-tomography-for-small-choroidal-melanomas
#16
A F Brovkina, A S Stoyukhina, I V Musatkina
AIM: To investigate the sequence of OCT manifestations in choroidal melanoma (CM) with account to its growth. MATERIAL AND METHODS: A total of 28 CM patients were examined. Of them, 18 patients with early CM, 10 - with medium-sized CM. The mean patient age at diagnosis was 60.54±5.31 years. Tumor location was macular (15 eyes) or perimacular (13 eyes), its prominence varied from 0.98 to 4.9 mm and basal diameter - from 5.08 to 18.9 mm. Additionally to OCT, tumor autofluorescence was studied in all cases...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911421/-analysis-of-changes-in-central-macular-thickness-based-on-optical-coherence-tomography-angiography-findings-in-retinal-vein-occlusion
#17
M V Budzinskaya, A V Shelankova, M A Mikhailova, A A Plyukhova, N M Nurieva, A V Fomin
AIM: To investigate the relationship between OCT angiography measurements and central fundus changes in patients with retinal vein occlusion (RVO). MATERIAL AND METHODS: The study enrolled 21 RVO patients aged from 55 to 86 years (69.9±2.28 years), including 8 patients with ischemic central RVO (I-CRVO; 73.6±3.4 years on average) and 13 patients with branch RVO (BRVO; 67.6±3.0 years on average). Of the latter, 8 cases were ischemic (I-BRVO) and 5 non-ischemic (NI-BRVO)...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911416/the-indirect-neuron-astrocyte-coculture-assay-an-in-vitro-set-up-for-the-detailed-investigation-of-neuron-glia-interactions
#18
Christine Gottschling, Egor Dzyubenko, Maren Geissler, Andreas Faissner
Proper neuronal development and function is the prerequisite of the developing and the adult brain. However, the mechanisms underlying the highly controlled formation and maintenance of complex neuronal networks are not completely understood thus far. The open questions concerning neurons in health and disease are diverse and reaching from understanding the basic development to investigating human related pathologies, e.g., Alzheimer's disease and Schizophrenia. The most detailed analysis of neurons can be performed in vitro...
November 14, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911412/reproducible-arterial-denudation-injury-by-infrarenal-abdominal-aortic-clamping-in-a-murine-model
#19
Aditya S Shirali, Austin I McDonald, Julia J Mack, M Luisa Iruela-Arispe
Percutaneous vascular interventions uniformly result in arterial denudation injuries that subsequently lead to thrombosis and restenosis. These complications can be attributed to impairments in re-endothelialization within the wound margins. Yet, the cellular and molecular mechanisms of re-endothelialization remain to be defined. While several animal models to study re-endothelialization after arterial denudation are available, few are performed in the mouse because of surgical limitations. This undermines the opportunity to exploit transgenic mouse lines and investigate the contribution of specific genes to the process of re-endothelialization...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911410/experimental-infection-with-listeria-monocytogenes-as-a-model-for-studying-host-interferon-%C3%AE-responses
#20
Jeeyoon Jennifer Ahn, Thirumahal Selvanantham, Monan Angela Zhang, Thierry Mallevaey, Shannon E Dunn
L. monocytogenes is a gram-positive bacterium that is a cause of food borne disease in humans. Experimental infection of mice with this pathogen has been highly informative on the role of innate and adaptive immune cells and specific cytokines in host immunity against intracellular pathogens. Production of IFN-γ by innate cells during sublethal infection with L. monocytogenes is important for activating macrophages and early control of the pathogen(1-3). In addition, IFN-γ production by adaptive memory lymphocytes is important for priming the activation of innate cells upon reinfection(4)...
November 16, 2016: Journal of Visualized Experiments: JoVE
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