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https://www.readbyqxmd.com/read/28647523/thermal-aggregation-of-human-immunoglobulin-g-in-arginine-solutions-contrasting-effects-of-stabilizers-and-destabilizers
#1
Shunsuke Yoshizawa, Tsutomu Arakawa, Kentaro Shiraki
Arginine is widely used as aggregation suppressor of proteins in biotechnology and pharmaceutics. However, why the effect of arginine depends on the types of proteins and stresses, including monoclonal antibodies, is still unclear. Here we investigated the precise processes of the thermal aggregation of human immunoglobulin G (IgG) in the presence of additives. As expected, arginine was the best additive to suppress the formation of insoluble aggregates during heat treatment, though it was unable to preserve the monomer content...
June 21, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28647350/antitumor-activity-of-resveratrol-is-independent-of-cu-ii-complex-formation-in-mcf-7-cell-line
#2
Priscylla Andrade Volkart, Rodrigo Benedetti Gassen, Bettina Mühlen Nogueira, Bárbara Nery Porto, José Eduardo Vargas, André Arigony Souto
Resveratrol (Rsv) is widely reported to possess anticarcinogenic properties in a plethora of cellular and animal models having limited toxicity toward normal cells. In the molecular level, Rsv can act as a suppressive agent for several impaired signaling pathways on cancer cells. However, Fukuhara and Miyata have shown a non-proteic reaction of Rsv, which can act as a prooxidant agent in the presence of copper (Cu), causing cellular oxidative stress accompanied of DNA damage. After this discovery, the complex Rsv-Cu was broadly explored as an antitumor mechanism in multiples tumor cell lines...
June 15, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28647290/effect-of-professional-expertise-and-exposure-to-everyday-life-decision-making-on-moral-choices
#3
Maddalena Boccia, Paola Verde, Gregorio Angelino, Paolo Carrozzo, Diego Vecchi, Laura Piccardi, Stefano Colangeli, Pierluigi Cordellieri, Fabio Ferlazzo, Anna Maria Giannini
Moral sense is defined as a feeling of fairness or unfairness of an action that knowingly causes harm to people other than the subject. It is crucial in determining human behavior and becomes pivotal in operational environments. Here we assessed whether professional daily life experience in an operational environment affects moral judgment by asking 41 military pilots of the Italian Air Force (P) and 69 controls (C) to solve 40 moral dilemmas. We found that P gave more morally acceptable utilitarian responses to moral dilemmas...
June 21, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28647246/environmentally-relevant-concentrations-of-aminopolycarboxylate-chelating-agents-mobilize-cd-from-humic-acid
#4
Ashley E North, Sophia Sarpong-Kumankomah, Andrew R Bellavie, Wade M White, Jürgen Gailer
Although Cd is a pollutant of public health relevance, many dietary sources from which it can be absorbed into human tissues remain unknown. While it is well established that the biogeochemical cycle of Cd involves its complexation with environment-derived ligands (e.g., humic acids, HAs) and anthropogenic ones (e.g., chelating agents, CAs), the interaction of Cd with both of these ligands is less well understood. To gain insight, a HA-Cd complex was injected on a size-exclusion chromatography (SEC) column coupled on-line with a flame atomic absorption spectrometer (FAAS) using 10mmol/L Tris buffer (pH8...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647226/inhalation-of-nanoplatelets-theoretical-deposition-simulations
#5
Robert Sturm
Primary objective of the contribution was the theoretical prediction of nanoplatelet deposition in the human respiratory tract. Modeling was founded on the hypothetical inhalation of graphene nanoplatelets (GNP) measuring 0.01 and 0.1μm in thickness and adopting a projected area diameter of 1-30μm. Particle uptake was assumed to take place with inhalation flow rates of 250, 500, 750, and 1000cm(3)s(-1), respectively. For an appropriate description of pulmonary particle behavior, transport of GNP in a stochastic lung structure and deposition formulae based on analytical and numerical studies were presupposed...
June 21, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28647196/smooth-muscle-cells-of-human-veins-show-an-increased-response-to-injury-at-valve-sites
#6
Shinsuke Kikuchi, Lihua Chen, Kevin Xiong, Yukihiro Saito, Nobuyoshi Azuma, Gale Tang, Michael Sobel, Thomas N Wight, Richard D Kenagy
OBJECTIVE: Venous valves are essential but are prone to injury, thrombosis, and fibrosis. We compared the behavior and gene expression of smooth muscle cells (SMCs) in the valve sinus vs nonvalve sites to elucidate biologic differences associated with vein valves. METHODS: Tissue explants of fresh human saphenous veins were prepared, and the migration of SMCs from explants of valve sinus vs nonvalve sinus areas was measured. Proliferation and death of SMCs were determined by staining for Ki67 and terminal deoxynucleotidyl transferase dUTP nick end labeling...
June 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28647006/a-meta-analysis-of-gaze-differences-to-social-and-nonsocial-information-between-individuals-with-and-without-autism
#7
REVIEW
Thomas W Frazier, Mark Strauss, Eric W Klingemier, Emily E Zetzer, Antonio Y Hardan, Charis Eng, Eric A Youngstrom
OBJECTIVE: Numerous studies have identified abnormal gaze in individuals with autism. However, only some findings have been replicated, the magnitude of effects is unclear, and the pattern of gaze differences across stimuli remains poorly understood. To address these gaps, a comprehensive meta-analysis of autism eye-tracking studies was conducted. METHOD: PubMed and a manual search of 1,132 publications were used to identify studies comparing looking behavior to social and/or nonsocial stimuli between individuals with autism and controls...
July 2017: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/28646749/mutually-facilitated-co-transport-of-two-different-viruses-through-reactive-porous-media
#8
Shuang Xu, Ramesh Attinti, Elizabeth Adams, Jie Wei, Kalmia Kniel, Jie Zhuang, Yan Jin
In this study, we quantified transport and retention behaviors of a human pathogenic virus (Adenovirus 41, abbreviated as Ad-41) and a model bacteriophage (ϕX174) through metal oxide-removed and goethite-coated sand under saturated flow conditions. Two sets of bench scale column experiments were conducted: transport of each type of viruses alone and co-transport of both viruses. All experiments were conducted at pH 7.5 using 2 mM artificial ground water (AGW) buffer as background solution. Experimental results revealed that goethite-coated sand (i...
June 18, 2017: Water Research
https://www.readbyqxmd.com/read/28646563/cohesive-network-reconfiguration-accompanies-extended-training
#9
Qawi K Telesford, Arian Ashourvan, Nicholas F Wymbs, Scott T Grafton, Jean M Vettel, Danielle S Bassett
Human behavior is supported by flexible neurophysiological processes that enable the fine-scale manipulation of information across distributed neural circuits. Yet, approaches for understanding the dynamics of these circuit interactions have been limited. One promising avenue for quantifying and describing these dynamics lies in multilayer network models. Here, networks are composed of nodes (which represent brain regions) and time-dependent edges (which represent statistical similarities in activity time series)...
June 24, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28646272/rhesus-cochlear-and-vestibular-functions-are-preserved-after-inner-ear-injection-of-saline-volume-sufficient-for-gene-therapy-delivery
#10
Chenkai Dai, Mohamed Lehar, Daniel Q Sun, Lani Swarthout Rvt, John P Carey, Tim MacLachlan, Doug Brough, Hinrich Staecker, Alexandra M Della Santina, Timothy E Hullar, Charles C Della Santina
Sensorineural losses of hearing and vestibular sensation due to hair cell dysfunction are among the most common disabilities. Recent preclinical research demonstrates that treatment of the inner ear with a variety of compounds, including gene therapy agents, may elicit regeneration and/or repair of hair cells in animals exposed to ototoxic medications or other insults to the inner ear. Delivery of gene therapy may also offer a means for treatment of hereditary hearing loss. However, injection of a fluid volume sufficient to deliver an adequate dose of a pharmacologic agent could, in theory, cause inner ear trauma that compromises functional outcome...
June 23, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28646234/electroporation-as-a-vaccine-delivery-system-and-a-natural-adjuvant-to-intradermal-administration-of-plasmid-dna-in-macaques
#11
Biliana Todorova, Lucille Adam, Slobodan Culina, Raphaël Boisgard, Frédéric Martinon, Antonio Cosma, Mart Ustav, Thierry Kortulewski, Roger Le Grand, Catherine Chapon
In vivo electroporation (EP) is used to enhance the uptake of nucleic acids and its association with DNA vaccination greatly stimulates immune responses to vaccine antigens delivered through the skin. However, the effect of EP on cutaneous cell behavior, the dynamics of immune cell recruitment and local inflammatory factors, have not been fully described. Here, we show that intradermal DNA vaccination combined with EP extends antigen expression to the epidermis and the subcutaneous skin muscle in non-human primates...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645892/meis1-effects-on-motor-phenotypes-and-the-sensorimotor-system-in-mice
#12
Aaro V Salminen, Lillian Garrett, Barbara Schormair, Jan Rozman, Florian Giesert, Kristina M Niedermeier, Lore Becker, Birgit Rathkolb, Ildikó Rácz, Martin Klingenspor, Thomas Klopstock, Eckhard Wolf, Andreas Zimmer, Valérie Gailus-Durner, Miguel Torres, Helmut Fuchs, Martin Hrabě de Angelis, Wolfgang Wurst, Sabine M Hölter, Juliane Winkelmann
MEIS1 is a developmental transcription factor linked to restless legs syndrome (RLS) in genome-wide association studies. RLS is a movement disorder leading to severe sleep reduction and with significant impact on the quality-of-life of patients. In genome-wide association studies, MEIS1 has consistently been the gene with the highest effect size and functional studies suggest a disease-relevant downregulation. Therefore, haploinsufficiency of Meis1 could be the most potential system for modeling RLS in animals...
June 23, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28645745/dna-methylation-of-dlg4-and-gja-1-of-human-hippocampus-and-prefrontal-cortex-in-major-depression-is-unchanged-in-comparison-to-healthy-individuals
#13
Oliver Kaut, Amit Sharma, Ina Schmitt, René Hurlemann, Ullrich Wüllner
Epigenetic alterations provide a potential mechanism to account for the numerous gene-environment interactions that have been reported in association with neuropsychiatric phenotypes. In context to major depression disorder (MDD), where postmortem and neuroimaging studies provide insights into dysfunctional brain regions, involvement of genetic heterogeneity also revealed the complexity of this disorder. Despite intensive research during the past several decades and information from genome wide studies, pathophysiology of depressive disorders remained elusive...
June 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28645725/cell-surface-n-glycan-alteration-in-hepad38-cell-lines-expressing-hepatitis-b-virus
#14
Surya Agung Priyambada, Ryo Misaki, Toru Okamoto, Yuta Okamoto, Takao Ohashi, Keiji Ueda, Yoshiharu Matsuura, Kazuhito Fujiyama
Hepatitis B virus (HBV) is the smallest partially double-stranded DNA virus known to infect humans. Worldwide, more than 50% of hepatocellular carcinoma (HCC) cases are related to chronic Hepatitis B. Development of HCC from normal liver cells is characterized by changes in cell surface N-glycans, which can promote the invasive behavior of tumor cells, leading ultimately to the progression of cancer. However, little is understood about the cell surface N-glycans of HBV-infected liver cells. We try to address this by taking advantage of the HepAD38 cell line, which can replicate HBV in the absence of tetracycline [tet(-)] in growth medium...
June 20, 2017: Virus Research
https://www.readbyqxmd.com/read/28645645/determinants-of-plasma-donation-a-review-of-the-literature
#15
A Beurel, F Terrade, J-P Lebaudy, B Danic
The major contribution of Human Sciences in the understanding of the whole blood donation behavior has been through the study of individuals' motivations and deterrents to donate. However, if whole blood donation has been very widely studied in the last sixty years, we still know very little about plasma donation in voluntary non-remunerated environments. Yet, the need for plasma-derived products has been strongly increasing for some years, and blood collection agencies have to adapt if they want to meet this demand...
June 20, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28645308/neonatal-aav-delivery-of-alpha-synuclein-induces-pathology-in-the-adult-mouse-brain
#16
Marion Delenclos, Ayman H Faroqi, Mei Yue, Aishe Kurti, Monica Castanedes-Casey, Linda Rousseau, Virginia Phillips, Dennis W Dickson, John D Fryer, Pamela J McLean
Abnormal accumulation of alpha-synuclein (αsyn) is a pathological hallmark of Lewy body related disorders such as Parkinson's disease and Dementia with Lewy body disease. During the past two decades, a myriad of animal models have been developed to mimic pathological features of synucleinopathies by over-expressing human αsyn. Although different strategies have been used, most models have little or no reliable and predictive phenotype. Novel animal models are a valuable tool for understanding neuronal pathology and to facilitate development of new therapeutics for these diseases...
June 23, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28645226/the-fragile-spell-of-desire-a-functional-perspective-on-changes-in-sexual-desire-across-relationship-development
#17
Gurit E Birnbaum
The sexual behavioral system evolved to motivate reproductive acts by arousing sexual desire. Building on the idea that this system has also been "exploited" by evolutionary processes to promote enduring bonds between romantic partners, the present article introduces an integrative model that delineates the functional significance of sexual desire in relationship formation and maintenance. This model explains why individuals' sexual reaction to their partner is context-dependent, clarifying how changes in the nature of interdependence over the course of relationships alter the ways in which specific predictors of sexual desire tend to promote (or inhibit) desire and thereby affect relationship depth and stability...
June 1, 2017: Personality and Social Psychology Review
https://www.readbyqxmd.com/read/28645086/toddler-exposure-to-flame-retardant-chemicals-magnitude-health-concern-and-potential-risk-or-protective-factors-of-exposure-observational-studies-summarized-in-a-systematic-review
#18
REVIEW
Eva J Sugeng, Marijke de Cock, Linda J Schoonmade, Margot van de Bor
Endocrine disrupting flame retardant (FR) chemicals form a human health concern, that is investigated mostly from the perspective of adult- and early life exposure. No overview of studies on toddler exposure and health effects exist. However, toddlerhood is a critical developmental period and toddlers are at increased risk for exposure because of their age-specific behavior. This systematic review encompasses toddler FR exposure studies in three countries, associated health effects and potential environmental, demographic, or behavioral risk- or protective factors for toddler exposure...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28644985/depressive-like-behavior-is-elevated-among-offspring-of-parents-exposed-to-dim-light-at-night-prior-to-mating
#19
Yasmine M Cissé, Kathryn L G Russart, Randy J Nelson
Rates of major depressive disorder (MDD) have steadily increased over the past 50 years. Many factors have been implicated in the etiology of depressive disorders and environmental influences are being increasingly recognized. The increase in depression rates has coincided with increased artificial nighttime lighting. Exposure to light at night (LAN) has been associated with increased depressive-like behavior in rodents and decreased mood in humans. However, relatively little is known on the multigenerational effects of dLAN on affect...
June 12, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28644920/genome-scale-metabolic-models-applied-to-human-health-and-disease
#20
REVIEW
Daniel J Cook, Jens Nielsen
Advances in genome sequencing, high throughput measurement of gene and protein expression levels, data accessibility, and computational power have allowed genome-scale metabolic models (GEMs) to become a useful tool for understanding metabolic alterations associated with many different diseases. Despite the proven utility of GEMs, researchers confront multiple challenges in the use of GEMs, their application to human health and disease, and their construction and simulation in an organ-specific and disease-specific manner...
June 23, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
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