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https://www.readbyqxmd.com/read/29031212/a-comprehensive-analysis-of-direct-and-photosensitized-attenuation-of-toxoplasma-gondii-tachyzoites
#1
Juan G Yañuk, M Lis Alomar, M Micaela Gonzalez, Andrés M Alonso, Sergio O Angel, Verónica M Coceres, Franco M Cabrerizo
In the present work, we have evaluated the effect of three different types of radiation: UVC (254±5nm), UVA (365±20nm) and visible (420±20nm) on different morphological and biological functions of Toxoplasma gondii tachyzoites. Briefly, UVC and UVA showed an inhibitory effect on parasite invasion in a dose-dependent manner. UVC showed the strongest effect inducing both structural damage (antigens) and functional inhibition (i.e., invasion and replication). On its own, visible light induces a quite distinctive and selective pattern of parasite-attenuation...
October 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29031105/effects-of-processing-parameters-on-the-inactivation-of-bacillus-cereus-spores-on-red-pepper-capsicum-annum-l-flakes-by-microwave-combined-cold-plasma-treatment
#2
Jung Eun Kim, Hyeon-Son Choi, Dong-Un Lee, Sea C Min
The efficacy of microwave-combined cold plasma treatment (MCPT) for inactivating Bacillus cereus spores contaminating red pepper (Capsicum annum L.) flakes was investigated. The effects of red pepper drying method, particle size, and water activity (aw) were also evaluated at two levels of microwave power (1700 and 2500W/cm(2)). The inactivation effect of MCPT was higher at higher microwave power. Spore reduction was more effective with vacuum-dried red pepper than far-infrared-dried flakes. A significantly higher level of spore reduction was observed with the red pepper sample with a smaller surface to volume ratio when one surface (exterior surface) was inoculated (p<0...
September 27, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29031100/discovery-of-a-new-mechanism-for-regulation-of-plant-triacylglycerol-metabolism-the-peanut-diacylglycerol-acyltransferase-1-gene-family-transcriptome-is-highly-enriched-in-alternative-splicing-variants
#3
Ling Zheng, Jay Shockey, Feng Guo, Lingmin Shi, Xinguo Li, Lei Shan, Shubo Wan, Zhenying Peng
Triacylglycerols (TAGs) are the most important energy storage form in oilseed crops. Diacylglycerol acyltransferase (DGAT) catalyzes the rate-limiting step of the Kennedy pathway of TAG biosynthesis. To date, little is known about the regulation of DGAT activity in peanut (Arachis hypogaea), an agronomically important oilseed crop that is cultivated in many parts of the world. In this study, seven distinct forms of type 1 DGAT (AhDGAT1.1-AhDGAT1.7) were identified, cloned, and characterized. Comparisons of the nucleotide sequences and gene structures revealed many different splicing variants of AhDGAT1, some of which displayed different organ-specific expression patterns...
October 6, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29031076/synthesis-and-evaluation-of-new-pyridyl-pyrazinyl-thiourea-derivatives-neuroprotection-against-amyloid-%C3%AE-induced-toxicity
#4
Jung-Eun Park, Ahmed Elkamhawy, Ahmed H E Hassan, Ae Nim Pae, Jiyoun Lee, Sora Paik, Beoung-Geon Park, Eun Joo Roh
Herein, we report synthesis and evaluation of new twenty six small molecules against β amyloid (Aβ)-induced opening of mitochondrial permeability transition pore (mPTP) using JC-1 assay which measures the change of mitochondrial membrane potential (ΔΨm). The neuroprotective effect of seventeen compounds against Aβ-induced mPTP opening was superior to that of the standard Cyclosporin A (CsA). Fifteen derivatives eliciting increased green to red fluorescence percentage less than 40.0% were evaluated for their impact on ATP production, cell viability and neuroprotection against Aβ-induced neuronal cell death...
September 22, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29029330/the-association-between-omega-3-fatty-acid-biomarkers-and-inflammatory-arthritis-in-an-anti-citrullinated-protein-antibody-positive-population
#5
Ryan W Gan, Elizabeth A Bemis, M Kristen Demoruelle, Christopher C Striebich, Stacey Brake, Marie L Feser, LauraKay Moss, Michael Clare-Salzler, V Michael Holers, Kevin D Deane, Jill M Norris
Objectives: Higher circulating omega-3 fatty acids (n-3 FAs) are associated with a lower prevalence of anti-CCP antibodies and RF in subjects without RA. We examined whether, in anti-CCP+ subjects, n-3 FAs also play a role in development of inflammatory arthritis (IA). Methods: At Colorado-based health fairs from 2008 to 2014, participants without a previous diagnosis of RA who were anti-CCP3+ (n = 47) were recruited into a follow-up study; symptom assessments and joint examinations were conducted every 6 months for the determination of IA...
October 4, 2017: Rheumatology
https://www.readbyqxmd.com/read/29029168/effects-of-foliar-insecticides-on-leaf-level-spectral-reflectance-of-soybean
#6
Tavvs M Alves, Zachary P Marston, Ian V MacRae, Robert L Koch
Pest-induced changes in plant reflectance are crucial for the development of pest management programs using remote sensing. However, it is unknown if plant reflectance data is also affected by foliar insecticides applied for pest management. Our study assessed the effects of foliar insecticides on leaf reflectance of soybean. A 2-yr field trial and a greenhouse trial were conducted using randomized complete block and completely randomized designs, respectively. Treatments consisted of an untreated check, a new systemic insecticide (sulfoxaflor), and two representatives of the most common insecticide classes used for soybean pest management in the north-central United States (i...
September 27, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29029157/stings-of-the-ant-wasmannia-auropunctata-hymenoptera-formicidae-as-cause-of-punctate-corneal-lesions-in-humans-and-other-animals
#7
Diego Rosselli, James K Wetterer
Numerous researchers have observed a form of punctate corneal lesions causing leukomas (corneal opacities) in humans, domestic animals, and wild animals in different parts of the world. This condition has been reported under different names, including West Indian (or Caribbean) punctate keratopathy, West Indian dots, tropical punctate keratopathy, Rice's keratopathy, Florida keratopathy, and Florida spots. Many of these cases, appear to have a common cause, the stings of a small red ant, Wasmannia auropunctata (Hymenoptera: Formicidae), originally from the Neotropics, but spread to other parts of the world through human commerce...
September 25, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29028975/comparative-responses-of-rhagoletis-zephyria-and-rhagoletis-pomonella-diptera-tephritidae-to-commercial-and-experimental-sticky-traps-and-odors-in-washington-state
#8
Wee L Yee, Robert B Goughnour, Jeffrey L Feder, Charles E Linn, Dong H Cha
Rhagoletis zephyria Snow and Rhagoletis pomonella (Walsh) (Diptera: Tephritidae) are morphologically similar flies that attack white-colored snowberry fruit (Symphoricarpos spp.) and yellow/red or dark-colored apple/hawthorn fruit (Malus/Crataegus spp.), respectively. The two flies are caught together on traps in R. pomonella surveys in the western United States, increasing labor needed to process catches. Comparing responses of the two species with different traps could help identify best practices for reducing R...
September 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29028863/the-future-of-non-invasive-rejuvenation-technology-devices
#9
Michael H Gold
<p>Non-invasive rejuvenation of the skin is performed regularly in many cosmetic offices. Using evidence-based medicine, we will review the various technologies being used for non-invasive rejuvenation. This includes the use of intense pulsed light (IPL), which has been thoroughly studied and shown to be quite useful for this type of rejuvenation in removing the red and brown pigments, as well as affecting collagen. Fractional lasers, both non-ablative and ablative in nature, also can show dramatic improvements in the skin and associated clinical studies are reviewed here...
June 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29028687/hyperreflective-deposition-in-the-background-of-advanced-stargardt-disease
#10
Lyam Ciccone, Winston Lee, Jana Zernant, Koji Tanaka, Kaspar Schuerch, Stephen H Tsang, Rando Allikmets
PURPOSE: To describe an unusual manifestation of hyperreflective deposits in the subretinal space in a group of patients with clinically and genetically confirmed Stargardt disease. METHODS: Retrospective review of color fundus, autofluorescence, infrared reflectance, red-free images, and spectral domain optical coherence tomography in 296 clinically diagnosed and genetically confirmed (2 expected disease-causing mutations in ABCA4) patients with Stargardt disease...
October 12, 2017: Retina
https://www.readbyqxmd.com/read/29028507/hydrogen-bond-docking-preference-in-furans-oh%C3%A2-%C3%AF-vs-oh%C3%A2-o
#11
Xiaotong Jiang, Narcisse T Tsona, Shanshan Tang, Lin Du
The docking sites of hydrogen bonds in complexes formed between 2,2,2-trifluoroethanol (TFE), furan (Fu), and 2-methyl furan (MF) have been investigated. Using density functional theory (DFT) calculations, gas phase and matrix isolation FTIR spectroscopies, the strengths of OH⋯O and OH⋯π hydrogen bonds in the complexes were compared to find the docking preference. Calculations suggest that the hydrogen bond donor, TFE, is more likely to dock onto the oxygen atom of the aromatic furans ring, and consequently, the OH⋯O type hydrogen bond is relatively stronger than the OH⋯π type...
October 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29028503/unveiling-the-stimulatory-effects-of-tartrazine-on-human-and-bovine-serum-albumin-fibrillogenesis-spectroscopic-and-microscopic-study
#12
Nasser Abdulatif Al-Shabib, Javed Masood Khan, Mohammad A Alsenaidy, Abdulrahman M Alsenaidy, Mohd Shahnawaz Khan, Fohad Mabood Husain, Mohammad Rashid Khan, Mohammad Naseem, Priyankar Sen, Parvez Alam, Rizwan Hasan Khan
Amyloid fibrils are playing key role in the pathogenesis of various neurodegenerative diseases. Generally anionic molecules are known to induce amyloid fibril in several proteins. In this work, we have studied the effect of anionic food additive dye i.e., tartrazine (TZ) on the amyloid fibril formation of human serum albumins (HSA) and bovine serum albumin (BSA) at pHs7.4 and 3.5. We have employed various biophysical methods like, turbidity measurements, Rayleigh Light Scattering (RLS), Dynamic Light Scattering (DLS), intrinsic fluorescence, Congo red assay, far-UV CD, transmission electron microscopy (TEM) and atomic force microscopy (AFM) to decipher the mechanism of TZ-induce amyloid fibril formation in both the serum albumins at pHs7...
September 22, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29028495/non-cytotoxic-effect-of-green-synthesized-silver-nanoparticles-and-its-antibacterial-activity
#13
B Senthil, T Devasena, B Prakash, A Rajasekar
Silver nanoparticles (AgNPs) were green synthesized using ethanolic extract of fenugreek leaves and characterized using UV-Vis spectroscopy, Fourier transform infra-red spectroscopy (FTIR), X-ray diffraction (XRD), high resolution transmission electron microscopy HRTEM and energy dispersive X-ray analysis (EDX) techniques. The HRTEM results revealed the formation of highly stable, mono dispersed, spherical shaped AgNPs with the size ranging from 20 to 30nm. The presence of flavonoids and their interaction with the AgNPs were confirmed using FTIR...
October 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29028490/differentiation-of-red-lipsticks-using-the-attenuated-total-reflection-technique-supported-by-two-chemometric-methods
#14
Marta Gładysz, Małgorzata Król, Paweł Kościelniak
The main challenge for the identification and differentiation of lipsticks for forensic purposes is the fact that they have a similar chemical composition - in particular, samples of the same hue. The objective of the presented research was to solve this problem using a nondestructive analytical technique - attenuated total reflection spectroscopy (ATR). 38 red lipsticks produced by 20 different manufacturers were examined in optimized experimental conditions. To facilitate discrimination and provide more extensive analyses of the obtained data, two chemometric techniques: principal component analysis and cluster analysis were used...
October 6, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29028460/goldwater-rule-red-line-or-guideline
#15
Scott O Lilienfeld, Joshua D Miller, Donald R Lynam
No abstract text is available yet for this article.
October 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/29028346/influence-of-hofmeister-i-on-tuning-optoelectronic-properties-of-ampholytic-polythiophene-by-varying-ph-and-conjugating-with-rna
#16
Radhakanta Ghosh, Dhruba P Chatterjee, Sujoy Das, Titas Kumar Mukhopadhyay, Ayan Datta, Arun K Nandi
A significant tuning of optoelectronic properties of polythiophene (PT) chains due to Hofmeister iodide (I-) ion is demonstrated in ampholytic polythiophene [polythiophene-g-poly{(N,N,N-trimethylamino iodide)ethyl methacrylate-co-methacrylic acid}, APT] at different pH. In acidic medium, the absorption and emission signals of PT chromophore exhibit appreciable blue shift in presence of I- as counter anion only. The co-operative effect of undissociated -COOH and quaternary ammonium groups immobilize I- near apolar PT chain causing threading of grafted chains and hence twisting of the backbone attributing to the blue shift...
October 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29028333/profiling-and-quantification-of-regioisomeric-caffeoyl-glucoses-in-berry-fruits
#17
Maria Alexandra Patras, Nikolai Kuhnert, Rakesh Jaiswal, Gordon J McDougall
Based on a recently developed tandem MS based hierarchical scheme for the identification of regioisomeric caffeoyl glucoses, selected berry fruits were profiled for their caffeoyl glucose ester content. Fresh edible berries profiled included strawberries, raspberries, blueberries, blackberries, red and black currants, lingonberries, gooseberries, cranberries, juice of elderberries, goji berries, chokeberries, cranberries, açai berries, sea buckthorn berries, Montmorency sour cherries, and pomegranate were investigated...
October 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29028291/reproductive-biology-of-aechmea-bracteata-sw-griseb-bromelioideae-bromeliaceae
#18
Manuel Pool-Chalé, Ivón Ramírez-Morillo, Germán Carnevali Fernández-Concha, Claudia T Hornung-Leoni
Individuals of Aechmea bracteata show inflorescences with red scape bracts and odorless, yellow, tubular, diurnal flowers, with closely-arranged sexual organs, producing a large amount of fruits. In order to investigate the reproductive system of this species, a suite of characters were assessed: phenology, floral morphology and biology, nectar production dynamics, and fruit and seed production and germination, as a result of controlled pollination crosses. The study was conducted during two flowering seasons in wild populations in Yucatán, Mexico...
October 13, 2017: Plant Biology
https://www.readbyqxmd.com/read/29028022/continuous-tunable-broadband-emission-of-fluorphosphate-glasses-for-single-component-multi-chromatic-phosphors
#19
Ruilin Zheng, Qi Zhang, Kehan Yu, Chunxiao Liu, Jianyong Ding, Peng Lv, Wei Wei
A kind of Sn(2+)/Mn(2+) co-doped fluorphosphate (FP) glasses that served as single-component continuous tunable broadband emitting multi-chromatic phosphors are developed for the first time. Importantly, these FP glasses have high thermal conductivity (3.25-3.70  W/m·K) and good chemical stability in water (80°C). By combining with commercially available UV-LEDs directly, the emission colors can be tuned from blue/cold-white to warm-white/red through the energy transfer from Sn(2+) to Mn(2+), and the broadband spectra covering the whole visible region from 380 nm to 760 nm...
October 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29027679/high-prevalence-of-betanodavirus-barfin-flounder-nervous-necrosis-virus-as-well-as-red-spotted-grouper-nervous-necrosis-virus-genotype-in-shellfish
#20
Y C Kim, W J Kwon, M S Kim, K I Kim, J G Min, H D Jeong
Using two serially executed PCRs, the discriminative multiplex two-step RT-PCR (DMT-2 RT-PCR) following the detection seminested two-step RT-PCR (DSN-2 RT-PCR), we found a high frequency presence of BFNNV genotype as well as RGNNV in various domestic and imported shellfish. This was definitely different from the previous reports of outbreaks and asymptomatic infection only by the RGNNV genotype in cultured finfish in Korea. Cultivation of NNV entrapped in shellfish was performed successfully by a blind passage...
October 13, 2017: Journal of Fish Diseases
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