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https://www.readbyqxmd.com/read/29350346/chemical-characterization-of-young-virgin-queens-and-mated-egg-laying-queens-in-the-ant-cataglyphis-cursor-random-forest-classification-analysis-for-multivariate-datasets
#1
Thibaud Monnin, Florence Helft, Chloé Leroy, Patrizia d'Ettorre, Claudie Doums
Social insects are well known for their extremely rich chemical communication, yet their sex pheromones remain poorly studied. In the thermophilic and thelytokous ant, Cataglyphis cursor, we analyzed the cuticular hydrocarbon profiles and Dufour's gland contents of queens of different age and reproductive status (sexually immature gynes, sexually mature gynes, mated and egg-laying queens) and of workers. Random forest classification analyses showed that the four groups of individuals were well separated for both chemical sources, except mature gynes that clustered with queens for cuticular hydrocarbons and with immature gynes for Dufour's gland secretions...
January 19, 2018: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29348201/solution-structure-of-sperm-lysin-yields-novel-insights-into-molecular-dynamics-of-rapid-protein-evolution
#2
Damien B Wilburn, Lisa M Tuttle, Rachel E Klevit, Willie J Swanson
Protein evolution is driven by the sum of different physiochemical and genetic processes that usually results in strong purifying selection to maintain biochemical functions. However, proteins that are part of systems under arms race dynamics often evolve at unparalleled rates that can produce atypical biochemical properties. In the marine mollusk abalone, lysin and vitelline envelope receptor for lysin (VERL) are a pair of rapidly coevolving proteins that are essential for species-specific interactions between sperm and egg...
January 18, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29320582/thyroid-transcriptome-analysis-reveals-different-adaptive-responses-to-cold-environmental-conditions-between-two-chicken-breeds
#3
Shanshan Xie, Xukai Yang, Dehe Wang, Feng Zhu, Ning Yang, Zhuocheng Hou, Zhonghua Ning
Selection for cold tolerance in chickens is important for improving production performance and animal welfare. The identification of chicken breeds with higher cold tolerance and production performance will help to target candidates for the selection. The thyroid gland plays important roles in thermal adaptation, and its function is influenced by breed differences and transcriptional plasticity, both of which remain largely unknown in the chicken thyroid transcriptome. In this study, we subjected Bashang Long-tail (BS) and Rhode Island Red (RIR) chickens to either cold or warm environments for 21 weeks and investigated egg production performance, body weight changes, serum thyroid hormone concentrations, and thyroid gland transcriptome profiles...
2018: PloS One
https://www.readbyqxmd.com/read/29318553/analyzing-the-type-ii-transmembrane-serine-protease-hepsin-dependent-basement-membrane-remodeling-in-3d-cell-culture
#4
Shishir M Pant, Denis Belitskin, Hanna Ala-Hongisto, Juha Klefström, Topi A Tervonen
Breakdown of the basement membrane is a key step that precedes tumor invasion, and accumulating evidence suggests a key role for the type II transmembrane proteases (TTSPs) in that process. Overexpression of a TTSP hepsin characterizes many solid cancers, including prostate, breast, and ovarian cancer, and in experimental tumor models, the elevated proteolytic activity of hepsin simultaneously activates several growth factors and cleaves basement membrane protein laminin-332, which is an essential component of the cell-basement membrane junction hemidesmosome...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29295619/variable-temperature-nuclear-magnetic-resonance-and-magnetic-resonance-imaging-system-as-a-novel-technique-for-in-situ-monitoring-food-phase-transition
#5
Yukun Song, Shasha Cheng, Huihui Wang, Bei-Wei Zhu, Dayong Zhou, Peiqiang Yang, Mingqian Tan
A nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) system with a 45 mm variable temperature (VT) sample probe (VT-NMR-MRI) was developed as an innovative technique for in situ monitoring of food phase transition. The system was designed to allow for dual deployment either in a freezing (-37 oC) or a high temperature (150 oC). The major breakthrough of the developed VT-NMR-MRI system is that it is able to measure the water states simultaneously in situ during food processing. The performance of the VT-NMR-MRI system was evaluated by measuring the phase transition for salmon flesh and hen egg samples...
January 2, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29287318/how-ingredients-influence-furan-and-aroma-generation-in-sponge-cake
#6
Mayela Cepeda-Vázquez, Barbara Rega, Nicolas Descharles, Valérie Camel
A wide range of compounds can be formed during thermal processing of food, some of which are relevant for aroma (e.g., furfural), while others are of great health concern (e.g., furan). This paper presents the study of formulation as affecting the simultaneous generation of furan and furfural, along with other aroma quality markers, in sponge cake by means of headspace trap/GC-MS. Ingredients were screened according to their category (fat, salt, sugar, egg-based). Glucose-containing formulation resulted in the highest content of furan and furfural (12...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29205380/effect-of-serine-protease-inhibitor-from-squid-ovary-on-gel-properties-of-surimi-from-indian-mackerel
#7
Avtar Singh, Soottawat Benjakul
Effects of serine protease inhibitor from squid ovary (SOSPI) and egg white powder (EWP) on gel properties of surimi from Indian mackerel (Rastrelliger kanagurta) were investigated. Breaking force of gel increased when SOSPI levels increased up to 2%. However, EWP showed higher efficiency in increasing breaking force of resulting surimi gel. Nevertheless, SOSPI (0.5-3%) had no effect on deformation. Trichloroacetic acid-soluble peptide content in surimi gel decreased when the levels of SOSPI and EWP increased (p < ...
December 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/29202914/integrating-allergen-analysis-within-a-risk-assessment-framework-approaches-to-development-of-targeted-mass-spectrometry-methods-for-allergen-detection-and-quantification-in-the-ifaam-project
#8
Chiara Nitride, Victoria Lee, Ivona Baricevic-Jones, Karine Adel-Patient, Sabine Baumgartner, E N Clare Mills
Allergen analysis is central to implementing and monitoring food allergen risk assessment and management processes by the food industry, but current methods for the determination of allergens in foods give highly variable results. The European Union-funded "Integrated Approaches to Food Allergen and Allergy Risk Management" (iFAAM) project has been working to address gaps in knowledge regarding food allergen management and analysis, including the development of novel MS and immuno-based allergen determination methods...
December 5, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29202910/a-targeted-lc-ms-ms-method-for-the-simultaneous-detection-and-quantitation-of-egg-milk-and-peanut-allergens-in-sugar-cookies
#9
Chelsea C Boo, Christine H Parker, Lauren S Jackson
Food allergy is a growing public health concern, with many individuals reporting allergies to multiple food sources. Compliance with food labeling regulations and prevention of inadvertent cross-contact in manufacturing requires the use of reliable methods for the detection and quantitation of allergens in processed foods. In this work, a novel liquid chromatography-tandem mass spectrometry multiple-reaction monitoring method for multiallergen detection and quantitation of egg, milk, and peanut was developed and evaluated in an allergen-incurred baked sugar cookie matrix...
December 5, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29193855/sulfanilic-acid-modified-chitosan-mini-spheres-and-their-application-for-lysozyme-purification-from-egg-white
#10
Daniela B Hirsch, María F Baieli, Nicolás Urtasun, Juan M Lázaro-Martínez, Romina J Glisoni, María V Miranda, Osvaldo Cascone, Federico J Wolman
A cation exchange matrix with zwitterionic and multi-modal properties was synthesized by a simple reaction sequence coupling sulfanilic acid to a chitosan based support. The novel chromatographic matrix was physico-chemically characterized by ss-NMR and ζ potential, and its chromatographic performance was evaluated for lysozyme purification from diluted egg white. The maximum adsorption capacity, calculated according to Langmuir adsorption isotherm, was 50.07 ± 1.47 mg g-1 while the dissociation constant was 0...
November 29, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29191551/the-drosophila-lymph-gland-is-an-ideal-model-for-studying-hematopoiesis
#11
Shichao Yu, Fangzhou Luo, Li Hua Jin
Hematopoiesis in Drosophila melanogaster occurs throughout the entire life cycle, from the embryo to adulthood. The healthy lymph gland, as a hematopoietic organ during the larval stage, can give rise to two mature types of hemocytes, plasmatocytes and crystal cells, which persist into the pupal and adult stages. Homeostasis of the lymph gland is tightly controlled by a series of conserved factors and signaling pathways, which also play key roles in mammalian hematopoiesis. Thus, revealing the hematopoietic mechanisms in Drosophila will advance our understanding of hematopoietic stem cells and their niche as well as leukemia in mammals...
November 27, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29169803/expression-purification-and-characterization-of-two-leucine-aminopeptidases-of-the-blood-fluke-schistosoma-mansoni
#12
Gabriela Maggioli, Gabriel Rinaldi, Ines Giaudrone, Patricia Berasain, José F Tort, Paul J Brindley, Carlos Carmona
Schistosomiasis is a major neglected tropical disease (NTD) and considered the most important of the human helminthiases in terms of morbidity and mortality. Whereas treatment with praziquantel has been effective since the 1980s, the potential for the emergence of drug resistance has propelled the search for new interventions. Studies have revealed key roles of proteases in parasitic helminths during establishment of infection, tissue invasion, immune evasion, parasite feeding and development throughout the different developmental stages, pinpointing them as possible candidates...
November 20, 2017: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/29167595/seasonal-variations-in-c-n-si-ca-p-mg-s-k-fe-relationships-of-seston-from-norwegian-coastal-water-impact-of-extreme-offshore-forcing-during-winter-spring-2010
#13
Svein Rune Erga, Stig Bjarte Haugen, Gunnar Bratbak, Jorun Karin Egge, Mikal Heldal, Kjell Arne Mork, Svein Norland
The aim of this study was to reveal the relative content of C, N, Ca, Si, P, Mg, K, S and Fe in seston particles in Norwegian coastal water (NCW), and how it relates to biological and hydrographic processes during seasonal cycles from October 2009-March 2012. The following over all stoichiometric relationship for the time series was obtained: C66N11Si3.4Ca2.3P1Mg0.73S0.37K0.35Fe0.30, which is novel for marine waters. A record-breaking (187-year record) negative North Atlantic Oscillation (NAO) index caused extreme physical forcing on the Norwegian Coastal Current Water (NCCW) during the winter 2009-2010, and the inflow and upwelling of saline Atlantic water (AW) in the fjord was thus extraordinary during late spring-early summer in 2010...
November 20, 2017: Marine Chemistry
https://www.readbyqxmd.com/read/29096248/retrospective-proteomic-analysis-of-a-novel-cancer-metastasis-promoting-rgd-containing-peptide
#14
Michiyo Tsuru, Michio Sata, Maki Tanaka, Hideaki Umeyama, Yoshio Kodera, Mieko Shiwa, Norikazu Aoyagi, Kaori Yasuda, Kei Matsuoka, Takaaki Fukuda, Hideaki Yamana, Kensei Nagata
Patients who undergo surgical extirpation of a primary liver carcinoma followed by radiotherapy and chemotherapy leading to complete remission are nevertheless known to develop cancerous metastases 3-10 years later. We retrospectively examined the blood sera collected over 8 years from 30 patients who developed bone metastases after the complete remission of liver cancer to identify serum proteins showing differential expression compared to patients without remission. We detected a novel RGD (Arg-Gly-Asp)-containing peptide derived from the C-terminal portion of fibrinogen in the sera of metastatic patients that appeared to control the EMT (epithelial-mesenchymal transition) of cancer cells, in a process associated with miR-199a-3p...
December 2017: Translational Oncology
https://www.readbyqxmd.com/read/29053871/cellular-and-morphological-characterization-of-blastoderms-from-freshly-laid-broiler-eggs
#15
N Pokhrel, E Ben-Tal Cohen, O Genin, D Sela-Donenfeld, Y Cinnamon
The pioneering study of Eyal-Giladi and Kochav (EG&K; Eyal-Giladi and Kochav, 1976) on the early developmental stages-from fertilization, through oviposition, to the gastrulation process-set the standard for characterizing chicken embryos, and has been used in numerous studies over the years. During uterine development, the chicken embryo undergoes dramatic changes, extremely rapid cell cycles, massive cell death, and axial determination processes. However, once the egg is laid, the temperature drops and the embryo enters into a diapause-like state...
October 5, 2017: Poultry Science
https://www.readbyqxmd.com/read/29034438/the-pathways-fertility-preservation-decision-aid-website-for-women-with-cancer-development-and-field-testing
#16
Terri L Woodard, Aubri S Hoffman, Laura A Covarrubias, Deborah Holman, Leslie Schover, Andrea Bradford, Derek B Hoffman, Aakrati Mathur, Jerah Thomas, Robert J Volk
PURPOSE: To improve survivors' awareness and knowledge of fertility preservation counseling and treatment options, this study engaged survivors and providers to design, develop, and field-test Pathways: a fertility preservation patient decision aid website for young women with cancer©. METHODS: Using an adapted user-centered design process, our stakeholder advisory group and research team designed and optimized the Pathways patient decision aid website through four iterative cycles of review and revision with clinicians (n = 21) and survivors (n = 14)...
October 15, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28992814/field-efficacy-and-safety-of-fluralaner-solution-for-administration-in-drinking-water-for-the-treatment-of-poultry-red-mite-dermanyssus-gallinae-infestations-in-commercial-flocks-in-europe
#17
Emmanuel Thomas, Mathieu Chiquet, Björn Sander, Eva Zschiesche, Annie Sigognault Flochlay
BACKGROUND: Welfare concerns, production losses caused by Dermanyssus gallinae, the poultry red mite (PRM), and widespread mite resistance to environmentally applied acaricides continue to drive an urgent need for new and effective control measures. Fluralaner is a novel systemic acaricide developed to address that need. A series of field studies was initiated to investigate the safety and efficacy of a fluralaner solution (10 mg/ml) administered in drinking water at a dose rate of 0...
October 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28917743/selection-of-an-aptamer-against-muscovy-duck-parvovirus-for-highly-sensitive-rapid-visual-detection-by-label-free-aptasensor
#18
Taofeng Lu, Qin Ma, Wenzhuo Yan, Yuanzhi Wang, Yuanyuan Zhang, Lili Zhao, Hongyan Chen
Muscovy duck parvovirus (MDPV) causes high mortality and morbidity in ducks. This study investigated a novel aptamer-based, label-free aptasensor detection of MDPV. In this study, we developed an ssDNA aptamer using the filtration partition and lambda exonuclease method with an affinity-based monitor and counter-screening process. After 15 rounds of SELEX (systematic evolution of ligands by exponential enrichment), the ssDNA aptamer Apt-10, which specifically bound to MDPV with high affinity (Kd = 467nM) was successfully screened, and the aptamer was also found to be good specific to MDPV...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28916657/tenascin-c-and-integrin-%C3%AE-9-mediate-interactions-of-prostate-cancer-with-the-bone-microenvironment
#19
Rebeca San Martin, Ravi Pathak, Antrix Jain, Sung Yun Jung, Susan G Hilsenbeck, María C Piña-Barba, Andrew G Sikora, Kenneth J Pienta, David R Rowley
Deposition of the extracellular matrix protein tenascin-C is part of the reactive stroma response, which has a critical role in prostate cancer progression. Here, we report that tenascin C is expressed in the bone endosteum and is associated with formation of prostate bone metastases. Metastatic cells cultured on osteo-mimetic surfaces coated with tenascin C exhibited enhanced adhesion and colony formation as mediated by integrin α9β1. In addition, metastatic cells preferentially migrated and colonized tenascin-C-coated trabecular bone xenografts in a novel system that employed chorioallantoic membranes of fertilized chicken eggs as host...
September 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28916030/fellowship-candidate-selection-at-the-best-medical-center-a-novel-process
#20
Philip R Cohen
Dr. Ida Lystic completed her MD degree at the prestigious Harvey Medical School (which has since been renamed the Harvey Provider School) and her residency in internal medicine and gastroenterology fellowship at the OTHER (Owen T. Henry and Eugene Rutherford) Medical Center. She was subsequently hired as an assistant professor at the BEST (Byron Edwards and Samuel Thompson) Medical Center in 2015. After eventually completing an extensive list of employment requirements, she was able to begin seeing patients...
September 2017: Clinics in Dermatology
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