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https://www.readbyqxmd.com/read/28748922/regulation-of-drosophila-hematopoietic-sites-by-activin-%C3%AE-from-active-sensory-neurons
#1
Kalpana Makhijani, Brandy Alexander, Deepti Rao, Sophia Petraki, Leire Herboso, Katelyn Kukar, Itrat Batool, Stephanie Wachner, Katrina S Gold, Corinna Wong, Michael B O'Connor, Katja Brückner
An outstanding question in animal development, tissue homeostasis and disease is how cell populations adapt to sensory inputs. During Drosophila larval development, hematopoietic sites are in direct contact with sensory neuron clusters of the peripheral nervous system (PNS), and blood cells (hemocytes) require the PNS for their survival and recruitment to these microenvironments, known as Hematopoietic Pockets. Here we report that Activin-β, a TGF-β family ligand, is expressed by sensory neurons of the PNS and regulates the proliferation and adhesion of hemocytes...
July 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28746859/release-of-applied-mechanical-loading-stimulates-intercellular-calcium-waves-in-drosophila-wing%C3%A2-discs
#2
Cody E Narciso, Nicholas M Contento, Thomas J Storey, David J Hoelzle, Jeremiah J Zartman
Mechanical forces are critical but poorly understood inputs for organogenesis and wound healing. Calcium ions (Ca(2+)) are critical second messengers in cells for integrating environmental and mechanical cues, but the regulation of Ca(2+) signaling is poorly understood in developing epithelial tissues. Here we report a chip-based regulated environment for microorgans that enables systematic investigations of the crosstalk between an organ's mechanical stress environment and biochemical signaling under genetic and chemical perturbations...
July 25, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28742690/do-surgeons-react-a-retrospective-analysis-of-surgeons-response-to-harassment-of-a-colleague-during-simulated-operating-theatre-scenarios
#3
Hannah Gostlow, Camila Vega Vega, Nicholas Marlow, Wendy Babidge, Guy Maddern
OBJECTIVE: To assess and report on surgeons' ability to identify and manage incidences of harassment. BACKGROUND: The Royal Australasian College of Surgeons is committed to driving out discrimination, bullying, harassment, and sexual harassment from surgical training and practice, through changing the culture of the workplace. To eradicate these behaviors, it is first critical to understand how the current workforce responds to these actions. METHODS: A retrospective analysis of video data of an operating theatre simulation was conducted to identify how surgeons, from a range of experience levels, react to instances of harassment...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28735974/characteristics-of-six-small-heat-shock-protein-genes-from-bactrocera-dorsalis-diverse-expression-under-conditions-of-thermal-stress-and-normal-growth
#4
Wei Dou, Yi Tian, Hong Liu, Yan Shi, Guy Smagghe, Jin-Jun Wang
To explore the functions of small heat shock proteins (sHsps) in relation to thermal stress and development in Bactrocera dorsalis (Hendel), one of the most economically important pest species attacking a wide range of fruits and vegetables, six full-length cDNAs of sHsp genes (BdHsp17.7, 18.4, 20.4, 20.6, 21.6 and 23.8) were cloned, and the expression patterns in different developmental stages and tissues, as well as in response to both thermal and 20-hydroxyecdysone (20E) exposures, were examined using real time quantitative PCR...
July 20, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28735164/vesicle-trafficking-in-plant-immunity
#5
REVIEW
Hye Sup Yun, Chian Kwon
To defend against extracellular pathogens, plants primarily depend on cell-autonomous innate immunity due to the lack of the circulatory immune system including mobile immune cells. To extracellularly restrict or kill the pathogens, plant cells dump out antimicrobials. However, since antimicrobials are also toxic to plant cells themselves, they have to be safely delivered to the target sites in a separate vesicular compartment. In addition, because immune responses often requires energy otherwise used for the other metabolic processes, it is very important to properly control the duration and strength of immune responses depending on pathogen types...
July 20, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28730234/associated-lesions-of-peri-implant-mucosa-in-immediate-versus-delayed-loading-of-dental-implants
#6
Alexandru Andrei Iliescu, Sabina Andrada Zurac, Vasile Nicolae, Mihaela Georgiana Iliescu, Paula Perlea
Currently, immediate loading of dental implants is very attractive as a standard protocol for prosthetic restorations in edentulous patients. The aim of this study is to find out the intimate peri-implant mucosa response depending on timing of implant loading, immediate or delayed. Fifty-one screw implants Alpha Bio (Alpha-Bio Tec, Israel) were inserted in 42 partially edentulous patients according to standardized surgical techniques. At six months of loading, samples of peri-implant mucosa were harvested from 27 immediate loaded, respectively 24 delayed loaded implants, and subjected to microscopic examination...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28723556/peroxisome-mediated-metabolism-is-required-for-immune-response-to-microbial-infection
#7
Francesca Di Cara, Avinash Sheshachalam, Nancy E Braverman, Richard A Rachubinski, Andrew J Simmonds
The innate immune response is critical for animal homeostasis and is conserved from invertebrates to vertebrates. This response depends on specialized cells that recognize, internalize, and destroy microbial invaders through phagocytosis. This is coupled to autonomous or non-autonomous cellular signaling via reactive oxygen species (ROS) and cytokine production. Lipids are known signaling factors in this process, as the acute phase response of macrophages is accompanied by systemic lipid changes that help resolve inflammation...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28705721/characterization-of-nlrp3-like-gene-from-apostichopus-japonicus-provides-new-evidence-on-inflammation-response-in-invertebrates
#8
Zhimeng Lv, Zhixin Wei, Zhen Zhang, Chenghua Li, Yina Shao, Weiwei Zhang, Xuelin Zhao, Ye Li, Xuemei Duan, Jinbo Xiong
Inflammatory/defensive response after pathogen invasion is considered a local defense reaction in vertebrates. Inflammation response in Apostichopus japonicus was hardly determined due to scarce information available for nucleotide binding domain-like receptor family, pyrin domain-containing (NLRP) family. In the present study, invertebrate NLRP homologue was identified from A. japonicus (designated as AjNLRP3-like) by rapid amplification of cDNA ends. Full-length cDNA of AjNLRP3-like measured 2970 bp with 2265 bp open reading frame encoding a 754-amino acid (aa) residue protein...
July 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28700579/tfh-derived-dopamine-accelerates-productive-synapses-in-germinal-centres
#9
Ilenia Papa, David Saliba, Maurilio Ponzoni, Sonia Bustamante, Pablo F Canete, Paula Gonzalez-Figueroa, Hayley A McNamara, Salvatore Valvo, Michele Grimbaldeston, Rebecca A Sweet, Harpreet Vohra, Ian A Cockburn, Michael Meyer-Hermann, Michael L Dustin, Claudio Doglioni, Carola G Vinuesa
Protective high-affinity antibody responses depend on competitive selection of B cells carrying somatically mutated B-cell receptors by follicular helper T (TFH) cells in germinal centres. The rapid T-B-cell interactions that occur during this process are reminiscent of neural synaptic transmission pathways. Here we show that a proportion of human TFH cells contain dense-core granules marked by chromogranin B, which are normally found in neuronal presynaptic terminals storing catecholamines such as dopamine...
July 12, 2017: Nature
https://www.readbyqxmd.com/read/28689711/differential-expression-of-stress-candidate-genes-for-thermal-tolerance-in-the-sea-urchin-loxechinus-albus
#10
Jonathan Vergara-Amado, Andrea X Silva, Catalina Manzi, Roberto F Nespolo, Leyla Cárdenas
Marine ectotherms inhabiting intertidal and shallow subtidal environments are continuously exposed to diurnal tidal cycles and seasonal variability in temperature. These organisms have adaptive mechanisms to maintain cellular homeostasis, irrespective of thermal environmental variation. In this study, we describe the molecular responses to thermal stress in the edible sea urchin Loxechinus albus. In particular, we determined the differential expression of a set of molecular markers that have been identified as targets of stress-related responses...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28681448/an-analysis-of-the-arccheck-mr-diode-array-s-performance-for-viewray-quality-assurance
#11
Steven T Ellefson, Wesley S Culberson, Bryan P Bednarz, Larry A DeWerd, John E Bayouth
The ArcCHECK-MR diode array utilizes a correction system with a virtual inclinometer to correct the angular response dependencies of the diodes. However, this correction system cannot be applied to measurements on the ViewRay MR-IGRT system due to the virtual inclinometer's incompatibility with the ViewRay's multiple simultaneous beams. Additionally, the ArcCHECK's current correction factors were determined without magnetic field effects taken into account. In the course of performing ViewRay IMRT quality assurance with the ArcCHECK, measurements were observed to be consistently higher than the ViewRay TPS predictions...
July 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28681150/predicting-patient-specific-radiotherapy-protocols-based-on-mathematical-model-choice-for-proliferation-saturation-index
#12
Jan Poleszczuk, Rachel Walker, Eduardo G Moros, Kujtim Latifi, Jimmy J Caudell, Heiko Enderling
Radiation is commonly used in cancer treatment. Over 50% of all cancer patients will undergo radiotherapy (RT) as part of cancer care. Scientific advances in RT have primarily focused on the physical characteristics of treatment including beam quality and delivery. Only recently have inroads been made into utilizing tumor biology and radiobiology to design more appropriate RT protocols. Tumors are composites of proliferating and growth-arrested cells, and overall response depends on their respective proportions at irradiation...
July 5, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28678348/nacl-and-osmolarity-produce-different-responses-in-organum-vasculosum-of-the-lamina-terminalis-neurons-sympathetic-nerve-activity-and-blood-pressure
#13
Brian J Kinsman, Kirsteen N Browning, Sean D Stocker
Systemic or central infusion of hypertonic NaCl and other osmolytes readily stimulate thirst and vasopressin secretion. In contrast, central infusion of hypertonic NaCl produces a greater increase in arterial blood pressure (ABP) than equi-osmotic mannitol/sorbitol. Although these responses depend on neurons in the organum vasculosum of the lamina terminalis (OVLT), these observations suggest OVLT neurons may sense or respond differently to hypertonic NaCl versus osmolarity. The purpose of this study was to test this hypothesis in Sprague-Dawley rats...
July 5, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28667123/mutant-p53-potentiates-the-oncogenic-effects-of-insulin-by-inhibiting-the-tumor-suppressor-dab2ip
#14
Elena Valentino, Arianna Bellazzo, Giulio Di Minin, Daria Sicari, Mattia Apollonio, Giosuè Scognamiglio, Maurizio Di Bonito, Gerardo Botti, Giannino Del Sal, Licio Collavin
Obesity and type 2 diabetes are significant risk factors for malignancies, being associated with chronic inflammation and hyperinsulinemia. In this context, insulin can synergize with inflammation to promote proliferation, survival, and dissemination of cancer cells. Point mutation of p53 is a frequent event and a significant factor in cancer development and progression. Mutant p53 protein(s) (mutp53) can acquire oncogenic properties that increase metastasis, proliferation, and cell survival. We report that breast and prostate cancer cells with mutant p53 respond to insulin stimulation by increasing cell proliferation and invasivity, and that such a response depends on the presence of mutp53...
June 30, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28664696/human-health-cost-of-hydrogen-sulfide-air-pollution-from-an-oil-and-gas-field
#15
Dinara Kenessary, Almas Kenessary, Ussen Ismailovich Kenessariyev, Konrad Juszkiewicz, Meiram Kazievich Amrin, Aya Eralovna Erzhanova
<b>Introduction and objective.</b> The Karachaganak oil and gas condensate field (KOGCF), one of the largest in the world, located in the Republic of Kazakhstan (RoK) in Central Asia, is surrounded by 10 settlements with a total population of 9,000 people. Approximately73% of this population constantly mention a specific odour of rotten eggs in the air, typical for hydrogen sulfide (H<sub>2</sub>S) emissions, and the occurrence of low-level concentrations of hydrogen sulfide around certain industrial installations (esp...
June 8, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28662684/atypical-blood-glucose-response-to-continuous-and-interval-exercise-in-a-person-with-type-1-diabetes-a-case-report
#16
Othmar Moser, Gerhard Tschakert, Alexander Mueller, Werner Groeschl, Thomas R Pieber, Gerd Koehler, Max L Eckstein, Richard M Bracken, Peter Hofmann
BACKGROUND: Therapy must be adapted for people with type 1 diabetes to avoid exercise-induced hypoglycemia caused by increased exercise-related glucose uptake into muscles. Therefore, to avoid hypoglycemia, the preexercise short-acting insulin dose must be reduced for safety reasons. We report a case of a man with long-lasting type 1 diabetes in whom no blood glucose decrease during different types of exercise with varying exercise intensities and modes was found, despite physiological hormone responses...
June 30, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28646186/magnetisation-switching-of-fept-nanoparticle-recording-medium-by-femtosecond-laser-pulses
#17
R John, M Berritta, D Hinzke, C Müller, T Santos, H Ulrichs, P Nieves, J Walowski, R Mondal, O Chubykalo-Fesenko, J McCord, P M Oppeneer, U Nowak, M Münzenberg
Manipulation of magnetisation with ultrashort laser pulses is promising for information storage device applications. The dynamics of the magnetisation response depends on the energy transfer from the photons to the spins during the initial laser excitation. A material of special interest for magnetic storage are FePt nanoparticles, for which switching of the magnetisation with optical angular momentum was demonstrated recently. The mechanism remained unclear. Here we investigate experimentally and theoretically the all-optical switching of FePt nanoparticles...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633605/controlling-response-dependence-in-the-measurement-of-change-using-the-rasch-model
#18
David Andrich
The advantages of using person location estimates from the Rasch model over raw scores for the measurement of change using a common test include the linearization of scores and the automatic handling of statistical properties of repeated measurements. However, the application of the model requires that the responses to the items are statistically independent in the sense that the specific responses to the items on the first time of testing do not affect the responses at a second time. This requirement implies that the responses to the items at both times of assessment are governed only by the invariant location parameters of the items at the two times of testing and the location parameters of each person each time...
January 1, 2017: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/28617999/adenosine-an-endogenous-mediator-in-the-pathogenesis-of-gynecological-cancer
#19
REVIEW
Amirhossein Bahreyni, Seyed Sattar Samani, Elnaz Ghorbani, Farzad Rahmani, Reza Khayami, Younes Toroghian, Reihane Behnam-Rassouli, Majid Khazaei, Mikhail Ryzhikov, Mohammad Reza Parizadeh, Malihe Hasanzadeh, Amir Avan, Seyed Mahdi Hassanian
Extracellular concentration of adenosine increases in the hypoxic tumor microenvironment. Adenosine signaling regulates apoptosis, angiogenesis, metastasis and immune suppression in cancer cells. Adenosine-induced cell responses depend upon different subtypes of adenosine receptors activation and type of cancer. Suppression of adenosine signaling via inhibition of adenosine receptors or adenosine generating enzymes including CD39 and CD73 on ovarian or cervical cancer cells is a potentially novel therapeutic approach for gynecological cancer patients...
June 15, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28584283/phytohormone-ethylene-responsive-arabidopsis-organ-growth-under-light-is-in-the-fine-regulation-of-photosystem-ii-deficiency-inducible-akin10-expression
#20
Geun-Don Kim, Young-Hee Cho, Sang-Dong Yoo
For photoautotrophic plants, light-dependent photosynthesis plays an important role in organismal growth and development. Under light, Arabidopsis hypocotyl growth is promoted by the phytohormone ethylene. Despite well-characterized ethylene signaling pathways, the functions of light in the hormone-inducible growth response still remain elusive. Our cell-based functional and plant-system-based genetic analyses with biophysical and chemical tools showed that a chemical blockade of photosystem (PS) II activity affects ethylene-induced hypocotyl response under light...
June 5, 2017: Scientific Reports
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