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https://www.readbyqxmd.com/read/29133411/specific-inhibition-of-gpcr-independent-g-protein-signaling-by-a-rationally-engineered-protein
#1
Anthony Leyme, Arthur Marivin, Marcin Maziarz, Vincent DiGiacomo, Maria P Papakonstantinou, Prachi P Patel, Juan B Blanco-Canosa, Isha A Walawalkar, Gonzalo Rodriguez-Davila, Isabel Dominguez, Mikel Garcia-Marcos
Activation of heterotrimeric G proteins by cytoplasmic nonreceptor proteins is an alternative to the classical mechanism via G protein-coupled receptors (GPCRs). A subset of nonreceptor G protein activators is characterized by a conserved sequence named the Gα-binding and activating (GBA) motif, which confers guanine nucleotide exchange factor (GEF) activity in vitro and promotes G protein-dependent signaling in cells. GBA proteins have important roles in physiology and disease but remain greatly understudied...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29123949/targeting-il-5r%C3%AE-with-antibody-conjugates-reveals-a-strategy-for-imaging-and-therapy-for-invasive-bladder-cancer
#2
Michel Paquette, Luis-Guillermo Vilera-Perez, Simon Beaudoin, Nadia Ekindi-Ndongo, Pierre-Luc Boudreaut, Marc-Andre Bonin, Marie-Claude Battista, M'hamed Bentourkia, Angel F Lopez, Roger Lecomte, Eric Marsault, Brigitte Guérin, Robert Sabbagh, Jeffrey V Leyton
Despite the high interest and concern due to an increasing incidence and death rate, patients who develop muscle invasive bladder cancer (MIBC) have few options available. However, the past decade has produced many candidate bladder tumor-specific markers but further development of these markers is still needed for creating effective targeted medications to solve this urgent need. Interleukin-5 receptor α-subunit (IL-5Rα) has recently been reported to be involved in MIBC progression. Thus, we aimed to validate IL-5Rα as a target for antibody-conjugates to better manage patients with MIBC...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29120988/measuring-vertical-stiffness-in-sport-with-accelerometers-exercise-caution
#3
Tahleya M Eggers, Tim I Massard, Peter J Clothier, Ric Lovell
This study aimed to determine the measurement accuracy of triaxial accelerometers to determine vertical stiffness (Kvert) during overground running, and to examine the influence of device location. Seventeen healthy adults wore two triaxial accelerometers (positioned between scapulae and at lumbar spine) during a 2 min continuous 20 m shuttle run (12 km⋅h), which was repeated 7-d later. Accelerometer-derived Kvert data was compared to that calculated from corresponding force-plate ground contacts (criterion measure)...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29118104/conditional-deletion-of-ric-8b-in-olfactory-sensory-neurons-leads-to-olfactory-impairment
#4
Cleiton F Machado, Maíra H Nagai, Cassandra S Lyra, Thiago M Reis-Silva, André Machado Xavier, Isaias Glezer, Luciano F Felicio, Bettina Malnic
The olfactory system can discriminate a vast number of odorants. This ability derives from the existence of a large family of odorant receptors expressed in the cilia of the olfactory sensory neurons. Odorant receptors signal through the olfactory-specific G-protein subunit, Gαolf. Ric-8b, a guanine nucleotide exchange factor, interacts with Gαolf and can amplify odorant receptor signal transduction in vitro To explore the function of Ric-8b in vivo, we generated a tissue specific knockout mouse by crossing OMP-Cre transgenic mice to Ric-8b floxed mice...
November 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29108469/the-incidence-of-traumatic-intracranial-hemorrhage-in-head-injured-older-adults-transported-by-ems-with-and-without-anticoagulant-or-antiplatelet-use
#5
Daniel Kiden Nishijima, Samuel D Gaona, Trent Waechter, Ric Maloney, Adam Blitz, Andrew R Elms, Roel D Farrales, James Montoya, Troy Bair, Calvin Howard, Megan Gilbert, Renee Trajano, Kaela Hatchel, Mark Faul, Jeneita M Bell, Victor Coronado, David R Vinson, Dustin W Ballard, Daniel J Tancredi, Hernando Garzon, Kevin E Mackey, Kiarash Shahlaie, James F Holmes
Field triage guidelines recommend transport of head-injured patients on anticoagulants or antiplatelets to a higher-level trauma center based on studies suggesting a high incidence of traumatic intracranial hemorrhage (tICH). We compared the incidence of tICH in older adults transported by EMS with and without anticoagulation or antiplatelet use and evaluated the accuracies of different sets of field triage criteria to identify tICH. This was a prospective, observational study at 5 EMS agencies and 11 hospitals...
November 6, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29108311/remote-ischemic-conditioning-for-the-prevention-of-contrast-induced-acute-kidney-injury-in-patients-undergoing-intravascular-contrast-administration-a-meta-analysis-and-trial-sequential-analysis-of-16-randomized-controlled-trials
#6
Chang-Cheng Zhou, Wen-Tao Yao, Yu-Zheng Ge, Lu-Wei Xu, Ran Wu, Xiao-Fei Gao, Kai-Wei Song, Xiao-Min Jiang, Min Wang, Wen-Juan Huang, Yun-Peng Zhu, Liang-Peng Li, Liu-Hua Zhou, Zhong-Le Xu, Sheng-Li Zhang, Jia-Geng Zhu, Wen-Cheng Li, Rui-Peng Jia
Objective: We conducted this meta-analysis to examine the effect of remote ischemic conditioning (RIC) on contrast-induced acute kidney injury (CI-AKI) in patients undergoing intravascular contrast administrationon. Methods: Pubmed, Embase, and Cochrane Library were comprehensively searched to identify all eligible studies by 15th March, 2017. Risk ratio (RR) and weighted mean difference with the corresponding 95% confidence intervals (CI) were used to examine the treatment effect...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29099673/individualisation-of-speed-thresholds-does-not-enhance-the-dose-response-determination-in-football-training
#7
Dawn Scott, Ric Lovell
This study examined the utility of a range of approaches used to develop player-dependent speed zones in time-motion analysis (TMA), in determining the dose-response (internal load) of daily football training. Daily external (10 Hz GPS) and internal load (heart rate metrics, ratings of perceived exertion [RPE], wellness ratings) measures were tracked for 22 International women's football players during a 21-day training camp. High-speed (HSR) and very high speed running (VHSR) were determined according to arbitrary speed thresholds, as well as using a range of different individualization approaches that included the velocities corresponding to the heart rate deflection point, maximal aerobic speed, YYIR1 performance, and maximal sprint speed (MSS)...
November 3, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29097872/mitofusin-2-mediated-mitochondrial-ca-2-uptake-1-2-induced-liver-injury-in-rat-remote-ischemic-perconditioning-liver-transplantation-and-alpha-mouse-liver-12-hypoxia-cell-line-models
#8
Ruo-Peng Liang, Jun-Jun Jia, Jian-Hui Li, Ning He, Yan-Fei Zhou, Li Jiang, Tao Bai, Hai-Yang Xie, Lin Zhou, Yu-Ling Sun
AIM: To investigate the protective mechanism of mitofusin-2 (Mfn2) in rat remote ischemic perconditioning (RIC) models and revalidate it in alpha mouse liver-12 (AML-12) hypoxia cell lines. METHODS: Sprague-Dawley rats were divided into three groups (n = 6 each): sham, orthotopic liver transplantation and RIC. After operation, blood samples were collected to test alanine aminotransferase and aspartate aminotransferase. The liver lobes were harvested for histopathological examination, western blotting (WB) and quantitative real-time (qRT)-PCR...
October 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29095263/ed50-of-intrathecal-ropivacaine-for-cesarean-section-under-prophylactic-infusion-of-phenylephrine-a-consort-study
#9
Wangping Zhang, Hanbin Wu
BACKGROUND: Studies have reported that prophylactic continuous infusion of phenylephrine during spinal anesthesia for cesarean section can decrease the spread of local anesthetics. We investigated the ED50 of intrathecal hyperbaric ropivacaine in parturient women undergoing cesarean section under prophylactic infusion of phenylephrine. METHODS: Sixty parturient women were allocated into 2 groups in this prospective study. Group P received 0.5 mL kg h of phenylephrine (5 mg/50 mL) at the start of intrathecal injection, and Group C (control group) received the same volume of saline...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29073901/statistical-methods-to-derive-efficacy-estimates-of-anti-malarials-for-uncomplicated-plasmodium-falciparum-malaria-pitfalls-and-challenges
#10
REVIEW
Prabin Dahal, Julie A Simpson, Grant Dorsey, Philippe J Guérin, Ric N Price, Kasia Stepniewska
The Kaplan-Meier (K-M) method is currently the preferred approach to derive an efficacy estimate from anti-malarial trial data. In this approach event times are assumed to be continuous and estimates are generated on the assumption that there is only one cause of failure. In reality, failures are captured at pre-scheduled time points and patients can fail treatment due to a variety of causes other than the primary endpoint, commonly termed competing risk events. Ignoring these underlying assumptions can potentially distort the derived efficacy estimates and result in misleading conclusions...
October 26, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29071437/effect-of-long-term-remote-ischemic-conditioning-in-patients-with-chronic-ischemic-heart-failure
#11
Kasper Pryds, Roni Ranghøj Nielsen, Anders Jorsal, Mona Sahlholdt Hansen, Steffen Ringgaard, Jens Refsgaard, Won Yong Kim, Annemette Krintel Petersen, Hans Erik Bøtker, Michael Rahbek Schmidt
Remote ischemic conditioning (RIC) protects against acute ischemia-reperfusion injury and may also have beneficial effects in patients with stable cardiovascular disease. We investigated the effect of long-term RIC treatment in patients with chronic ischaemic heart failure (CIHF). In a parallel group study, 22 patients with compensated CIHF and 21 matched control subjects without heart failure or ischemic heart disease were evaluated by cardiac magnetic resonance imaging, cardiopulmonary exercise testing, skeletal muscle function testing, blood pressure measurement and blood sampling before and after 28 ± 4 days of once daily RIC treatment...
October 25, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29069498/transient-changes-in-hepatic-physiology-that-alter-bilirubin-and-bile-acid-transport-may-explain-elevations-in-liver-chemistries-observed-in-clinical-trials-of-ggf2-cimaglermin-alfa
#12
Merrie Mosedale, Donald Button, Jonathan P Jackson, Kimberly M Freeman, Kenneth R Brouwer, Anthony O Caggiano, Andrew Eisen, Jennifer F Iaci, Tom J Parry, Ric Stanulis, Maya Srinivas, Paul B Watkins
GGF2 is a recombinant human neuregulin-1β in development for chronic heart failure. Phase 1 clinical trials of GGF2 were put on hold when transient elevations in serum aminotransferases and total bilirubin were observed in 2 of 43 subjects who received single doses of GGF2 at 1.5 or 0.378 mg/kg. However, aminotransferase elevations were modest and not typical of liver injury sufficient to result in elevated serum bilirubin. Cynomolgus monkeys administered a single 15 mg/kg dose of GGF2 had similar transient elevations in serum aminotransferases and bilirubin as well as transient elevations in serum bile acids...
October 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29049727/the-diameter-of-retinal-vessels-is-affected-by-transient-ischemia-of-the-arm-in-normal-persons
#13
Yasmin El Dabagh, Line Petersen, Michael Pedersen, Toke Bek
Purpose: Remote ischemic conditioning (RIC) implies that transient ischemia in a limb can affect perfusion in a target organ elsewhere in the body. The changes in perfusion can be assumed to be paralleled by changes in the vessel diameters in the target organ. It remains to be elucidated whether the diameter of normal retinal vessels can be used as a marker of RIC in vivo. Methods: In 20 normal persons aged 20 to 31 years the Dynamic Vessel Analyzer (DVA) was used to measure the resting diameter and diameter changes during isometric exercise and flicker stimulation before, immediately after, and 1 hour after RIC induced by transient ischemia in the left arm...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29047371/needle-acquisition-patterns-network-risk-and-social-capital-among-rural-pwid-in-puerto-rico
#14
Ian Duncan, Patrick Habecker, Roberto Abadie, Ric Curtis, Bilal Khan, Kirk Dombrowski
BACKGROUND: People who inject drugs (PWID) take on significant risks of contracting blood-borne infection, including injecting with a large number of partners and acquiring needles from unsafe sources. When combined, risk of infection can be magnified. METHODS: Using a sample of PWID in rural Puerto Rico, we model the relationship between a subject's number of injection partners and the likelihood of having used an unsafe source of injection syringes. Data collection with 315 current injectors identified six sources of needles...
October 18, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/29042490/remote-ischemic-conditioning-may-improve-outcomes-of-patients-with-cerebral-small-vessel-disease
#15
RANDOMIZED CONTROLLED TRIAL
Yuan Wang, Ran Meng, Haiqing Song, Gang Liu, Yang Hua, Dehua Cui, Lemin Zheng, Wuwei Feng, David S Liebeskind, Marc Fisher, Xunming Ji
BACKGROUND AND PURPOSE: We aimed to evaluate the efficacy of remote ischemic conditioning (RIC) in patients with cerebral small-vessel disease. METHODS: Thirty patients with cerebral small-vessel disease-related mild cognitive impairment were enrolled in this prospective, randomized controlled study for 1 year. Besides routine medical treatment, participants were randomized into the experimental group (n=14) undergoing 5 cycles consisting of ischemia followed by reperfusion for 5 minutes on both upper limbs twice daily for 1 year or the control group (n=16) who were treated with sham ischemia-reperfusion cycles...
November 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29040700/radiation-induced-changes-after-stereotactic-radiosurgery-for-brain-arteriovenous-malformations-a-systematic-review-and-meta-analysis
#16
Adeel Ilyas, Ching-Jen Chen, Dale Ding, Thomas J Buell, Daniel M S Raper, Cheng-Chia Lee, Zhiyuan Xu, Jason P Sheehan
BACKGROUND: Radiation-induced changes (RICs) are the most common complication of stereotactic radiosurgery (SRS) for brain arteriovenous malformations (AVMs), and they appear as perinidal T2-weighted hyperintensities on magnetic resonance imaging, with or without associated neurological symptoms. OBJECTIVE: To determine the rates of RIC after AVM SRS and identify risk factors. METHODS: A literature review was performed using PubMed and MEDLINE to identify studies reporting RIC in AVM patients treated with SRS...
October 13, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29032272/fludarabine-and-busulfan-versus-fludarabine-cyclophosphamide-and-rituximab-as-reduced-intensity-conditioning-for-allogeneic-transplantation-in-follicular-lymphoma
#17
Narendranath Epperla, Kwang Woo Ahn, Philippe Armand, Samantha Jaglowski, Sairah Ahmed, Vaishalee P Kenkre, Bipin Savani, Madan Jagasia, Nirav N Shah, Timothy S Fenske, Ana Sureda, Sonali M Smith, Mehdi Hamadani
Large, multicenter studies comparing commonly used reduced-intensity conditioning (RIC) approaches in follicular lymphoma (FL) have not been performed. Using the Center for International Blood and Marrow Transplant Research database, we report the outcomes of the 2 most commonly used RIC approaches, fludarabine and busulfan (Flu/Bu) versus fludarabine, cyclophosphamide, and rituximab (FCR) in FL patients. We evaluated 200 FL patients undergoing allogeneic hematopoietic cell transplantation (allo-HCT) who received RIC with either Flu/Bu (n = 98) or FCR (n = 102) during 2008 to 2014...
October 13, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29032268/total-marrow-lymphoid-irradiation-fludarabine-melphalan-conditioning-for-allogeneic-hematopoietic-cell-transplantation
#18
Lindsay G Jensen, Tracey Stiller, Jeffrey Y C Wong, Joycelynne Palmer, Anthony Stein, Joseph Rosenthal
Reduced-intensity conditioning (RIC) regimens for hematopoietic stem cell transplantation (HCT) can reduce morbidity and mortality, but patients with advanced disease may require alternative approaches. In an initial report of RIC with fludarabine (FLU) and melphalan (MEL) with total marrow lymphoid irradiation (TMLI) in HCT for advanced hematologic malignancies in 33 patients, we found that the addition of TMLI to RIC was feasible and safe. Here we report long-term outcomes for these patients. This prospective study included 61 patients treated with TMLI to a dose of 12 Gy (1...
October 12, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29032061/toward-individualizing-conditioning-regimens-in-reduced-intensity-transplantation
#19
Moussab Damlaj, Mrinal M Patnaik
No abstract text is available yet for this article.
October 12, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29032010/dual-effects-of-insect-nachr-chaperone-ric-3-on-hybrid-receptor-promoting-assembly-on-endoplasmic-reticulum-but-suppressing-transport-to-plasma-membrane-on-xenopus-oocytes
#20
Haibo Bao, Xixia Xu, Wei Liu, Na Yu, Zewen Liu
Resistance to inhibitors of cholinesterase (RIC) -3 promotes the maturation (folding and assembly) of neuronal nicotinic acetylcholine receptors (nAChRs) as a molecular chaperone. The modulation effects of RIC-3 on homomeric α7 nAChRs are always positive, but its effects on heteromeric subtypes are inconsistent among reports. In this study, five RIC-3 isoforms were identified from Locusta migratoria. Four isoforms showed obvious effects on hybrid receptor Locα1/rβ2 expressed in Xenopus oocytes. As a representative, the co-expression of RIC-3v4 exhibited the decreased agonist responses (Imax) on oocytes, lower specific [(3)H]epibatidine binding (Bmax) on plasma membrane protein (PMP), and reduced subunit levels in PMP, which showed that the mature Locα1/rβ2 on the plasma membrane was decreased by the co-expression of RIC-3...
October 11, 2017: Neurochemistry International
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