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https://www.readbyqxmd.com/read/29150403/the-cortisol-reactivity-threshold-model-direction-of-trait-rumination-and-cortisol-reactivity-association-varies-with-stressor-severity
#1
Suzanne Vrshek-Schallhorn, Bradley M Avery, Maria Ditcheva, Vaibhav R Sapuram
Various internalizing risk factors predict, in separate studies, both augmented and reduced cortisol responding to lab-induced stress. Stressor severity appears key: We tested whether heightened trait-like internalizing risk (here, trait rumination) predicts heightened cortisol reactivity under modest objective stress, but conversely predicts reduced reactivity under more robust objective stress. Thus, we hypothesized that trait rumination would interact with a curvilinear (quadratic) function of stress severity to predict cortisol reactivity...
November 8, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29149412/the-translationally-controlled-tumor-protein-and-the-cellular-response-to-ionizing-radiation-induced-dna-damage
#2
Jie Zhang, Grace Shim, Sonia M de Toledo, Edouard I Azzam
The absorption of ionizing radiation by living cells can directly disrupt atomic structures, producing chemical and biological changes. It can also act indirectly through radiolysis of water, thereby generating reactive chemical species that may damage nucleic acids, proteins, and lipids. Together, the direct and indirect effects of radiation initiate a series of biochemical and molecular signaling events that may repair the damage or culminate in permanent physiological changes or cell death. In efforts to gain insight into the mechanisms underlying these effects, we observed a prominent upregulation of the Translationally Controlled Tumor Protein (TCTP) in low dose/low dose rate (137)Cs γ-irradiated cells that was associated with adaptive responses that reduced chromosomal damage to a level lower than what occurs spontaneously...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149247/quantitative-proteomic-profiling-of-bovine-follicular-fluid-during-follicle-development
#3
Rodrigo de Andrade Ferrazza, Elizabeth Moreira Dos Santos Schmidt, Monika Mihm Carmichael, Fabiana Ferreira de Souza, Richard Burchmore, Roberto Sartori, Peter David Eckersall, João Carlos Pinheiro Ferreira
Bovine follicular fluid (FF) constitutes the microenvironment of follicles and includes various biologically active proteins. We performed a study involving 18 healthy non-lactating Holstein cows to determine the protein expression profile of FF at key-stages of follicular development. Follicles were individually aspirated in vivo at pre-deviation (F1∼7.0mm); deviation (F1∼8.5mm); post-deviation (F1∼12.0mm); and pre-ovulatory stages of follicle development, which were confirmed by measurement of follicular estradiol and progesterone concentrations...
November 15, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29148428/-sup-135-sup-la-as-an-auger-electron-emitter-for-targeted-internal-radiotherapy
#4
Jesper Fonslet, Boon Quan Lee, Thuy A Tran, Mattia Siragusa, Mikael Jensen, Tibor Kibedi, Andrew E Stuchbery, Gregory W Severin
<b>Introduction:</b> <sup>135</sup>La has favorable nuclear and chemical properties for Auger-based targeted internal radiotherapy. Here we present detailed investigations of the production, emissions, imaging characteristics, and dosimetry related to <sup>135</sup>La therapy. <b>Methods and Results:</b> <sup>135</sup>La was produced by 16.5 MeV proton irradiation of metallic <sup>nat</sup>Ba on a medical cyclotron, and was isolated and purified by trap-and-release on weak cation-exchange resin...
November 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29147561/synthesis-and-reactivity-of-a-4his-enzyme-model-complex
#5
Jia Li, Atanu Banerjee, Timothy A Hasse, Reza Loloee, Shannon M Biros, Richard J Staples, Ferman A Chavez
A new iron(II) complex has been prepared and characterized. [Fe(TrIm)4(OTf)2] (1, TrIm = 1-Tritylimidazole). The solid state structure of 1 has been determined by X-ray crystallography. Compound 1 crystallizes in triclinic space group P1̄, with a = 13.342(7) Å, b = 13.5131(7) Å and c = 13.7025(7) Å. The iron center resides in distorted octahedral geometry coordinated to four equatorial imidazole groups and two axial triflate oxygens groups. The complex is high spin between 20 K and 300 K as indicated by variable field variable temperature magnetic measurements...
2017: RSC Advances
https://www.readbyqxmd.com/read/29147093/impacts-of-irradiation-sources-on-quality-attributes-of-low-salt-sausage-during-refrigerated-storage
#6
Dong-Heon Song, Hyun-Wook Kim, Ko-Eun Hwang, Yong-Jae Kim, Youn-Kyung Ham, Yun-Sang Choi, Dong-Jin Shin, Tae-Kyung Kim, Jae Hoon Lee, Cheon-Jei Kim, Hyun-Dong Paik
This study was performed to investigate the impacts of irradiation sources on quality attributes of low-salt sausage during refrigerated storage. Control sausage was prepared with 1.5% sodium chloride (NaCl), whereas low-salt sausage was formulated with 0.75% NaCl (a 50% reduction; L-control). Sausage samples were vacuum-packaged, and low-sausages were irradiated with gamma-ray, electron-beam and X-ray at 5 kGy, respectively. The samples were stored at 4°C for 28 d to determine changes in quality attributes...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/29146549/risk-assessment-of-infected-children-with-pseudomonas-aeruginosa-pneumonia-by-combining-host-and-pathogen-predictors
#7
Jiayi Chen, Yuhang Chen, Pengwei Hu, Tao Zhou, Xin Xu, Xiaofang Pei
The current criteria of pneumonia severity, which mainly depend on clinical manifestations and laboratory findings from blood routine tests and X-ray examination, are still of great significance in preliminary diagnosis. However, the utility of traditional severe pneumonia indexes (SPI) without considering high virulence and multidrug resistance of Pseudomonas aeruginosa has limitations. Thus, it is of great value to make a risk assessment, which can serve as a complementary option for incomplete clinical diagnosis...
November 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29145549/generational-differences-in-the-5-year-incidence-of-age-related-macular-degeneration
#8
Karen J Cruickshanks, David M Nondahl, Lauren J Johnson, Dayna S Dalton, Mary E Fisher, Guan-Hua Huang, Barbara E Klein, Ronald Klein, Carla R Schubert
Importance: Whether a reported decline in the risk of developing age-related macular degeneration (AMD) continued for people born during the Baby Boom years (1946-1964) or later is unknown. These data are important to plan for ocular health care needs in the 21st century. Objectives: To determine whether the 5-year risk for AMD declined by generation and to identify factors that contributed to improvement in risk. Design, Setting, and Participants: Data came from the longitudinal cohort Beaver Dam Eye Study (March 1, 1988, through September 15, 1990, and March 1, 1993, through June 15, 1995) and the Beaver Dam Offspring Study (June 8, 2005, through August 4, 2008, and July 12, 2010, through March 21, 2013)...
November 16, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29144820/pheochromocytoma-a-genetic-and-diagnostic-update
#9
Leilani B Mercado-Asis, Katherine I Wolf, Ivana Jochmanova, David Taïeb
OBJECTIVE: Pheochromocytomas and paragangliomas (PPGLs) are neuroendocrine tumors derived from adrenal or extra-adrenal locations, respectively. Upon suspicion of PPGL, specific metabolomic, molecular, biochemical, imaging, and histopathological studies are performed to prove, localize, treat, and monitor disease progression. Recently, improved diagnostic tools allow physicians to accurately diagnose PPGL, even in patients presenting with small (less than 1 cm) or biochemically silent tumors, which previously delayed proper detection and treatment...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144215/a-filtration-based-rapid-test-using-a-partially-purified-third-stage-larval-antigen-to-detect-specific-antibodies-for-the-diagnosis-of-gnathostomiasis
#10
A Ma, Y Wang, X L Liu, H M Zhang, P Eamsobhana, H S Yong, X X Gan
Human gnathostomiasis is an emerging food-borne parasitic disease caused by nematodes of the genus Gnathostoma. Currently, serological tests are commonly applied to support clinical diagnosis. In the present study, a simple and rapid filtration-based test, dot immune-gold filtration assay (DIGFA) was developed using a partially purified antigen of Gnathostoma third-stage larvae (L3). A total of 180 serum samples were tested to evaluate the diagnostic potential of DIGFA for gnathostomiasis. The diagnostic sensitivity and specificity were 96...
November 16, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29143052/photo-enhanced-antibacterial-activity-of-zno-graphene-quantum-dot-nanocomposites
#11
Junli Liu, Mauricio D Rojas-Andrade, Gustavo Chata, Yi Peng, Graham Roseman, Jia-En Lu, Glenn L Millhauser, Chad Saltikov, Shaowei Chen
Synthesis of new, highly active antibacterial agents has become increasingly important in light of emerging antibiotic resistance. In the present study, ZnO/graphene quantum dot (GQD) nanocomposites were produced by a facile hydrothermal method and characterized by an array of microscopic and spectroscopic measurements, including transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis and photoluminescence spectroscopy. Antibacterial activity of the ZnO/GQD nanocomposites was evaluated with Escherichia coli within the context of minimum inhibitory concentration and the reduction of the number of bacterial colonies in a standard plate count method, in comparison to those with ZnO and GQD separately...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29141371/-effect-of-recombinant-human-growth-hormone-therapy-on-metabolic-parameters-in-patients-with-craniopharyngioma
#12
J F Mao, X Wang, S Y Xiong, J J Zheng, B Q Yu, M Nie, X Y Wu, S T Qi
Objective: To investigate the effects of recombinant human growth hormone (rhGH) on metabolic parameters in patients with craniopharyngioma surgeries. Methods: Totallys 30 patients with craniopharyngioma were included in this retrospective study. They were divided into growth hormone (GH) group and control group according to whether they received rhGH therapy or not. The following parameters, including body mass index (BMI), weight, waist circumstance, transaminase, fasting blood glucose, lipid profile and high-sensitivity C-reactive protein (hsCRP) were compared after rhGH therapy for 4-6 months...
November 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29141361/-effect-of-probucol-on-preventing-contrast-induced-nephropathy-in-patients-undergoing-percutaneous-coronary-intervention
#13
X Q Suo, S C Yang, Z H Ma, T T Sun, W Y Zhang, H L Cong, W H Lin, C Z Lu, F S Tian, N K Fu
Objective: To investigate the preventive effect, possible mechanism and safety of probucol on contrast-induced nephropathy (CIN) after percutaneous coronary intervention (PCI) in patients with coronary heart disease (CHD). Methods: A total of 641 patients with coronary heart disease were consecutively enrolled from Department of Cardiology, in Tianjin Chest Hospital, Tianjin TEDA International Cardiovascular Hospital, Tianjin First Central Hospital, Tianjin Fourth Central Hospital. They were randomly divided into probucol group (n=321) and control group (n=320)...
November 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29141313/-tocilizumab-for-refractory-systemic-juvenile-idiopathic-arthritis
#14
J M Lai, F Q Wu, Z X Zhou, M Kang, X L Huang, G X Su, S N Li, J Zhu, X N Wang
Objective: To evaluate the efficacy and side effects of tocilizumab for the treatment of systemic juvenile idiopathic arthritis. Method: In this prospective self case-control study, the children diagnosed with refractory systemic juvenile idiopathic arthritis admitted to Department of Rheumatism and Immunology of Children's Hospital Affiliated to Capital Institute of Pediatrics from December 2013 to June 2016 were enrolled and information before and after treatment of tocilizumab was analyzed. The tocilizumab was introvenously guttae in a dose of 8-12 mg/kg every 2 weeks...
November 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29140700/high-pressure-behavior-of-silver-fluorides-up-to-40-gpa
#15
Adam Grzelak, Jakub Gawraczyński, Tomasz Jaroń, Dominik Kurzydłowski, Armand Budzianowski, Zoran Mazej, Piotr J Leszczyński, Vitali B Prakapenka, Mariana Derzsi, Viktor V Struzhkin, Wojciech Grochala
A combined experimental-theoretical study of silver(I) and silver(II) fluorides under high pressure is reported. For Ag(I), the CsCl-type structure is stable to at least 39 GPa; the overtone of the IR-active mode is seen in the Raman spectrum. Its Ag(II)F2 sibling is a unique compound in many ways: it is more covalent than other known difluorides, crystallizes in a layered structure, and is enormously reactive. Using X-ray diffraction and guided by theoretical calculations (density functional theory), we have been able to elucidate crystal structures of high-pressure polymorphs of AgF2...
November 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29138696/use-of-common-inflammatory-markers-in-the-long-term-screening-of-total-hip-arthroprosthesis-infections-our-experience
#16
Gabriele Falzarano, Antonio Piscopo, Predrag Grubor, Giuseppe Rollo, Antonio Medici, Valerio Pipola, Michele Bisaccia, Auro Caraffa, Elizabeth Mary Barron, Francesco Nobile, Raffaele Cioffi, Luigi Meccariello
Orthopedic implants have become essential components of modern medicine. The risk of infection of total hip arthroplasty (THA) is 1.5%-2%. Are the C-reactive protein (CRP), the erythrocyte sedimentation rate (ESR), and procalcitonin (PCT) good markers for THA infection screenings? From February 2009 to December 2012 at our Department of Orthopedics and Traumatology, 1248 patients were treated with THA. No prosthesis was cemented. All patients received antibiotic prophylaxis. All patients were discharged approximately 7...
2017: Advances in Orthopedics
https://www.readbyqxmd.com/read/29137781/preparation-of-novel-ceo2-biochar-nanocomposite-for-sonocatalytic-degradation-of-a-textile-dye
#17
Alireza Khataee, Peyman Gholami, Dimitrios Kalderis, Eleni Pachatouridou, Michalis Konsolakis
The sonocatalytic performance of CeO2 nanoparticles synthesized by a hydrothermal method (CeO2-H) and CeO2@biochar (CeO2-H@BC) nanocomposite, were evaluated for the degradation of Reactive Red 84 (RR84) under ultrasonic irradiation. For comparison purposes the corresponding performance of bare biochar (BC) and commercial CeO2 (CeO2-C) samples were also assessed. A complementary characterization study, involving scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray diffraction (XRD), N2 adsorption at -196°C (Brunauer-Emmett-Teller (BET) method) and Fourier transform infrared spectroscopy (FT-IR) was undertaken to gain insight into the structure-performance relationships...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137484/the-role-of-endogenous-reactive-oxygen-species-in-cardiac-myocyte-autophagy
#18
J-P Wang, R-F Chi, J Liu, Y-Z Deng, X-B Han, F-Z Qin, B Li
Autophagy is implicated in the maintenance of cardiac homeostasis. Autophagy is activated in heart failure, in which reactive oxygen species (ROS) are increased. Exogenous ROS have been shown to induce cardiomyocyte autophagy alterations. However, little is known about the influences of physiological levels of endogenous ROS on cardiomyocyte autophagy. In the present study, we tested the hypothesis that endogenous ROS in cardiomyocytes play an important role in inducing autophagy. Cultured H9C2 cardiomyocytes or Sprague-Dawley rats were treated with the antioxidant N-acetyl-cysteine (NAC) or the superoxide dismutase mimic tempol under the basal or nutrient deprivation conditions...
November 10, 2017: Physiological Research
https://www.readbyqxmd.com/read/29136708/-analysis-of-risk-factors-related-to-the-prognosis-in-patients-with-late-onset-severe-pneumonia-after-allogeneic-hematopoietic-stem-cell-transplantation
#19
Y Chen, Y Wang, Z H Jiang, L P Xu, X H Zhang, H Chen, Y Y Chen, F R Wang, J Z Wang, W Han, Y Y Zhang, T T Han, F F Tang, X D Mo, Y Q Sun, C H Yan, K Y Liu, X J Huan
Objective: To investigate the prognostic factors of late-onset severe pneumonia (LOSP) in patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: From January 2009 to December 2015, 68 patients with LOSP after allo-HSCT at Peking University Institute of Hematology were enrolled. In this retrospective study, univariate and multivariate analysis were used to evaluate the prognostic factors for LOSP after allo-HSCT. Results: The median time from allo-HSCT to the development of LOSP was 213 (90-2 330) days...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29136686/-clinicopathologic-and-molecular-characteristics-of-malignant-gastrointestinal-neuroectodermal-tumors
#20
M Zhao, T W Zhao, J Ma, C Y Wu, L Chen, G Q Ru, X L He
Objective: To investigate the clinicopathologic and molecular characteristics, diagnostic, differential diagnostic and prognostic features of malignant gastrointestinal neuroectodermal tumor. Methods: Two cases of malignant gastrointestinal neuroectodermal tumor were retrieved; the clinical and radiologic features, histomorphology, immunophenotype, molecular genetics and prognosis were analyzed and the relevant literature reviewed. Results: Case 1 was a 57-year-old male, presented with recurrent abdominal pain and melena...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
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