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https://www.readbyqxmd.com/read/28104456/rapid-stimulation-of-sodium-intake-combining-aldosterone-into-the-4-th-ventricle-and-the-blockade-of-the-lateral-parabrachial-nucleus
#1
S Gasparini, M R Melo, G F Leite, P A Nascimento, G M F Andrade-Franzé, J V Menani, E Colombari
Chronic infusion of aldosterone into the 4(th) ventricle (4(th) V) induces robust daily sodium intake, whereas acute injection of aldosterone into the 4(th) V produces no sodium intake. The inhibitory mechanism of the lateral parabrachial nucleus (LPBN) restrains sodium intake induced by different natriorexigenic stimuli and might affect the acute response to aldosterone into the 4(th) V. In the present study, 1.8% NaCl and water intake was tested in rats treated with acute injections of aldosterone into the 4(th) V combined with the blockade of the inhibitory mechanisms with injections of moxonidine (α2 adrenergic/imidazoline agonist) or methysergide (a serotonergic antagonist) into the LPBN...
January 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28104249/il-17-signalling-in-astrocytes-promotes-glutamate-excitotoxicity-indications-for-the-link-between-inflammatory-and-neurodegenerative-events-in-multiple-sclerosis
#2
Milos Kostic, Nikola Zivkovic, Ana Cvetanovic, Ivana Stojanovic, Miodrag Colic
OBJECTIVE: Th-17 cells have been exclusively referred to inflammatory events in multiple sclerosis (MS), while their importance in the development of glutamate excitotoxicity and the consequent neurodegeneration has been a completely unexplored concept. Accordingly, the objective of our study was to assess IL-17A effect on astrocyte ability to metabolize and release glutamate, considering that astrocytes had the central role in glutamate homeostasis. METHODS: By using primary rat astrocyte cultures, astrocyte ability to uptake glutamate was estimated by the alterations of glutamate transporters (GLAST and GLT-1) expression, whereas changes in glutamine synthetase expression were used to estimate the ability to metabolize glutamate...
January 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28102701/the-effect-of-pre-crash-velocity-reduction-on-occupant-response-using-a-human-body-finite-element-model
#3
B Guleyupoglu, J Schap, K D Kusano, F S Gayzik
OBJECTIVE: The objective of this study is to use a validated finite element model of the human body and a certified model of an ATD to evaluate the effect of simulated pre-crash braking on driver kinematics, restraint loads, body loads and computed injury criteria in four commonly-injured body regions. METHODS: The Global Human Body Models Consortium (GHBMC) 50th percentile male occupant (M50-O) and the Humanetics Hybrid-III 50(th) percentile models were gravity settled in the driver position of a generic interior equipped with an advanced three point belt and driver airbag...
January 19, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28101113/evaluating-the-effectiveness-of-pubertal-preparedness-program-in-terms-of-knowledge-and-attitude-regarding-pubertal-changes-among-pre-adolescent-girls
#4
Manisha Rani, Poonam Sheoran, Yogesh Kumar, Navjyot Singh
Objective: To compare the knowledge and attitude regarding pubertal changes among pre - adolescent girls before and after the pubertal preparedness program (PPP) in experimental and comparison group. Materials and methods: A Quasi experimental (non- equivalent comparison group pretest posttest) design was adopted with 104pre-adolescentgirls (52 in each experimental and comparison group) of age 12-14years, selected by purposive sampling from two different Government schools of Ambala District. Knowledge and attitude was assessed using structured knowledge questionnaire (KR-20 = 0...
September 2016: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/28096232/pr-957-a-selective-inhibitor-of-immunoproteasome-subunit-low-mw-polypeptide-7-attenuates-experimental-autoimmune-neuritis-by-suppressing-th17-cell-differentiation-and-regulating-cytokine-production
#5
Haijie Liu, Chunxiao Wan, Yanan Ding, Ranran Han, Yating He, Jinting Xiao, Junwei Hao
Experimental autoimmune neuritis (EAN) is a CD4(+) T cell-mediated autoimmune inflammatory demyelinating disease of the peripheral nervous system. It has been replicated in an animal model of human inflammatory demyelinating polyradiculoneuropathy, Guillain-Barré syndrome. In this study, we evaluated the therapeutic efficacy of a selective inhibitor of the immunoproteasome subunit, low-MW polypeptide 7 (PR-957) in rats with EAN. Our results showed that PR-957 significantly delayed onset day, reduced severity and shortened duration of EAN, and alleviated demyelination and inflammatory infiltration in sciatic nerves...
January 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28095433/bj-3105-a-6-alkoxypyridin-3-ol-analog-impairs-t-cell-differentiation-and-prevents-experimental-autoimmune-encephalomyelitis-disease-progression
#6
Maheshwor Timilshina, Youra Kang, Ishmit Dahal, Zhiwei You, Tae-Gyu Nam, Keuk-Jun Kim, Byeong-Seon Jeong, Jae-Hoon Chang
CD4+ T cells are essential in inflammation and autoimmune diseases. Interferon-γ (IFN-γ) secreting T helper (Th1) and IL-17 secreting T helper (Th17) cells are critical for several autoimmune diseases. To assess the inhibitory effect of a given compound on autoimmune disease, we screened many compounds with an in vitro Th differentiation assay. BJ-3105, a 6-alkoxypyridin-3-ol analog, inhibited IFN-γ and IL-17 production from polyclonal CD4+ T cells and ovalbumin (OVA)-specific CD4+ T cells which were activated by T cell receptor (TCR) engagement...
2017: PloS One
https://www.readbyqxmd.com/read/28091436/acute-kidney-injury-in-lagos-pattern-outcomes-and-predictors-of-in-hospital-mortality
#7
B T Bello, A A Busari, C O Amira, Y R Raji, R W Braimoh
CONTEXT: The pattern of acute kidney injury (AKI) differs significantly between developed and developing countries. AIMS: The aim of th study was to determine the pattern and clinical outcomes of AKI in Lagos, Southwest Nigeria. SETTINGS AND DESIGN: A retrospective review of hospital records of all patients with a diagnosis of AKI over a 20-month period. SUBJECTS AND METHODS: Records of 54 patients were reviewed. Information retrieved included, bio-data, etiology of AKI, results of laboratory investigations, and patient outcomes...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28089871/parents-childhood-socioeconomic-circumstances-are-associated-with-their-children-s-asthma-outcomes
#8
Edith Chen, Madeleine U Shalowitz, Rachel E Story, Katherine B Ehrlich, Erika M Manczak, Paula J Ham, Van Le, Gregory E Miller
BACKGROUND: Previous literature documents associations between low socioeconomic status (SES) and poor health outcomes, including asthma. However, this literature has largely focused on the effects of current family circumstances. OBJECTIVE: To test an intergenerational hypothesis, that the childhood SES that parents experience will be associated with asthma outcomes in their children, independent of effects of current family SES. Secondly, to test whether this association is in part due to difficulties in current parent-child relationships...
January 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28088183/incidence-aetiology-and-outcome-of-community-acquired-acute-kidney-injury-in-medical-admissions-in-malawi
#9
Rhys D R Evans, Ulla Hemmilä, Alison Craik, Mwayi Mtekateka, Fergus Hamilton, Zuze Kawale, Christopher J Kirwan, Hamish Dobbie, Gavin Dreyer
BACKGROUND: Epidemiological data on Acute Kidney Injury (AKI) from low-income countries is sparse. The aim of this study was to establish the incidence, severity, aetiology, and outcomes of community-acquired AKI in Malawi. METHODS: We conducted a prospective observational study of general medical admissions to a tertiary hospital in Blantyre between 27(th) April and 17(th) July 2015. All patients were screened on admission with a serum creatinine; those with creatinine above laboratory reference range were managed by the nephrology team...
January 14, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28086943/a-lifestyle-intervention-among-elderly-men-on-active-surveillance-for-non-aggressive-prostate-cancer-a-randomised-feasibility-study-with-whole-grain-rye-and-exercise
#10
Anne Kirstine Eriksen, Rikke Dalgaard Hansen, Michael Borre, Ryan Godsk Larsen, Jeppe Munthe Jensen, Kristian Overgaard, Mette Borre, Cecilie Kyrø, Rikard Landberg, Anja Olsen, Anne Tjønneland
BACKGROUND: The prognosis for men with non-aggressive prostate cancer is good, and several studies have investigated the impact of lifestyle changes including physical activity and diet on the prognosis. Despite positive results in animal studies and a few human interventions with whole-grain rye on markers of prostate cancer progression, the feasibility of trials investigating such dietary changes in combination with physical activity remains largely unstudied. The primary aim was to investigate the feasibility of an intervention with high whole-grain rye intake and vigorous physical activity for 6 months in men diagnosed with prostate cancer...
January 13, 2017: Trials
https://www.readbyqxmd.com/read/28078840/mast-cell-and-cancer-with-special-emphasis-on-il-37-an-anti-inflammatory-and-inhibitor-of-innate-immunity-new-frontiers
#11
F Carinci, G Lessiani, E Spinas, S K Kritas, G Ronconi, Al Caraffa, P Conti
Mast cells (MCs) are mediators of allergy and inflammation and participate in the growth of cancer cells. MCs can promote both neoangiogenesis and tumor growth. They increase in the stroma of certain tumors where they can be recruited by tumor-derived chemoattractants, such as monocyte chemotactic protein-1 (MCP-1), RANTES and stem cell factor (SCF) to selectively secrete inflammatory molecules including chemical mediators and cytokines (TNF, IL-6 and IL-1). However, MC differentiation pathways and heterogeneity in cancer are still poorly understood...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28061450/th1high-in-tumor-microenvironment-is-an-indicator-of-poor-prognosis-for-patients-with-nsclc
#12
Huang Jian, Shen Fangrong, Huang Haitao, Ling Chunhua, Zhang Guangbo
CD4+Th subsets play an important role in tumor progression but their expression characteristics and clinical significance in human tumor microenvironment remains unclear. In this study, we aim to analyze the expression and clinical significance of tissue-infiltrating Th1, Th2 and Th17 in lung cancer by flow cytometry. We found that the frequency of CD3+CD4+IFN-γ+Th1 in tumor nest was significantly lower than that in tumor boundary, adjacent normal lung tissue or corresponding lymph node tissue; the frequency of CD3+CD4+IL-4+Th2 in tumor nest was significantly higher than that in tumor boundary, adjacent normal lung tissue or corresponding lymph node tissue; the frequency of CD3+CD4+IL-17+Th17 in tumor nest was significantly lower than that in tumor boundary, but not adjacent normal tissue or corresponding lymph node tissue...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28052614/asts-17-th-annual-state-of-the-art-winter-symposium
#13
(no author information available yet)
No abstract text is available yet for this article.
January 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28048538/th-ab-209-05-validating-hemoglobin-saturation-and-dissolved-oxygen-in-tumors-using-photoacoustic-computed-tomographic-spectroscopic-imaging
#14
J Burnett, J Sick, N Cao, B Liu, H Nakshatri, M Mendonca, K Stantz
PURPOSE: Photoacoustic computed tomographic spectroscopy (PCT-S) provides intra-tumor measurements of oxygenation with high spatial resolution (0.2mm) and temporal fidelity (1-2 minutes) without the need for exogenous agents or ionizing radiation, thus providing a unique in vivo assay to measure SaO2 and investigate acute and chronic forms of hypoxia. The goal of this study is to validate in vivo SaO2 levels within tail artery of mice and the relationship between SaO2 and pO2 within subcutaneous breast tumors using PCT-S imaging, pulse oximetry and an OxyLite probe...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048330/th-ef-207a-04-a-dynamic-contrast-enhanced-cone-beam-ct-technique-for-evaluation-of-renal-functions
#15
Z Wang, J Shi, Y Yang
PURPOSE: To develop a simple but robust method for the early detection and evaluation of renal functions using dynamic contrast enhanced cone beam CT technique. METHODS: Experiments were performed on an integrated imaging and radiation research platform developed by our lab. Animals (n=3) were anesthetized with 20uL Ketamine/Xylazine cocktail, and then received 200uL injection of iodinated contrast agent Iopamidol via tail vein. Cone beam CT was acquired following contrast injection once per minute and up to 25 minutes...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048290/th-cd-bra-08-novel-iron-based-radiation-reporting-systems-as-4d-dosimeters-for-mr-guided-radiation-therapy
#16
H Lee, M Alqathami, M Kadbi, J Wang, A Blencowe, G Ibbott
PURPOSE: To compare novel radiation reporting systems utilizing ferric ion (Fe(3+) ) reduction versus ferrous ion (Fe(2+) ) oxidation in gelatin matrixes for 3D and 4D (3D+time) MR-guided radiation therapy dosimetry. METHODS: Dosimeters were irradiated using an integrated 1.5T MRI and 7MV linear accelerator (MR-Linac). Dosimeters were read-out with both a spectrophotometer and the MRI component of the MR-Linac immediately after irradiation. Changes in optical density (OD) were measured using a spectrophotometer; changes in MR signal intensity due to the paramagnetic differences in the iron ions were measured using the MR-Linac in real-time during irradiation (balanced-FFE sequences) and immediately after irradiation (T1 -weighted and inversion recovery sequences)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047891/th-ab-202-04-auto-adaptive-margin-generation-for-mlc-tracked-radiotherapy
#17
M Glitzner, M Fast, B Denis de Senneville, S Nill, U Oelfke, J Lagendijk, B Raaymakers, S Crijns
PURPOSE: To develop an auto-adaptive margin generator for MLC tracking. The generator is able to estimate errors arising in image guided radiotherapy, particularly on an MR-Linac, which depend on the latencies of machine and image processing, as well as on patient motion characteristics. From the estimated error distribution, a segment margin is generated, able to compensate errors up to a user-defined confidence. METHOD: In every tracking control cycle (TCC, 40ms), the desired aperture D(t) is compared to the actual aperture A(t), a delayed and imperfect representation of D(t)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047833/th-cd-bra-06-magnetic-field-effects-on-gafchromic-film-response-in-mr-igrt
#18
F Reynoso, A Curcuru, O Green, S Mutic, I Das, L Santanam
PURPOSE: To investigate the effects of magnetic fields in radiochromic films (RCF). Magnetokinetic changes may affect crystal orientation and polymerization within active layer of RCF, these effects are investigated in Magnetic Resonance Image-guided Radiotherapy (MR-IGRT). METHODS: Gafchromic EBT2 RCF were irradiated in a 30×30×30 cm(3) solid water phantom using a ViewRay MRIdian Co-60 MRI guided radiotherapy system (B=0.35 T). Fifteen 20.3×25.4 cm(2) EBT2 film sheets were placed at three different depths (d=0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047793/th-ab-209-02-gadolinium-measurements-in-human-bone-using-in-vivo-k-x-ray-fluorescence-kxrf-technique
#19
F Mostafaei, L Nie
PURPOSE: Improvement in an in vivo K x-ray fluorescence system, based on 109Cd source, for the detection of gadolinium (Gd) in bone has been investigated. Series of improvements to the method is described. Gd is of interest because of the extensive use of Gd-based contrast agents in MR imaging and the potential toxicity of Gd exposure. METHODS: A set of seven bone equivalent phantoms with different amount of Gd concentrations (from 0-100 ppm) has been developed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047768/th-ab-207a-06-the-use-of-realistic-phantoms-to-predict-ct-dose-to-pediatric-patients
#20
D Carver, S Kost, P Segars, N Fraser, D Pickens, R Price, M Stabin
PURPOSE: To predict pediatric patient dose from diagnostic CT scans using Monte Carlo simulation of realistic reference phantoms of various ages, weights, and heights. METHODS: A series of deformable pediatric reference phantoms using Non-Uniform Rational B-Splines (NURBS) was developed for a large range of ages, percentiles, and reference anatomy. Individual bones were modeled using age-dependent factors, and red marrow was modeled as functions of age and spatial distribution based on Cristy1...
June 2016: Medical Physics
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