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https://www.readbyqxmd.com/read/28212297/inorganic-reactive-sulfur-nitrogen-species-intricate-release-mechanisms-or-cacophony-in-yellow-blue-and-red
#1
Marian Grman, Muhammad Jawad Nasim, Roman Leontiev, Anton Misak, Veronika Jakusova, Karol Ondrias, Claus Jacob
Since the heydays of Reactive Sulfur Species (RSS) research during the first decade of the Millennium, numerous sulfur species involved in cellular regulation and signalling have been discovered. Yet despite the general predominance of organic species in organisms, recent years have also seen the emergence of inorganic reactive sulfur species, ranging from inorganic polysulfides (HSx(-)/Sx(2-)) to thionitrous acid (HSNO) and nitrosopersulfide (SSNO(-)). These inorganic species engage in a complex interplay of reactions in vitro and possibly also in vivo...
February 15, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28211603/impact-of-six-versus-12-months-of-dual-antiplatelet-therapy-in-patients-with-drug-eluting-stent-implantation-after-risk-stratification-with-the-residual-syntax-score-results-from-a-secondary-analysis-of-the-i-love-it-2-trial
#2
Miaohan Qiu, Yi Li, Jing Li, Kai Xu, Quanmin Jing, Shaohong Dong, Zhe Jin, Pitian Zhao, Bo Xu, Yaling Han
BACKGROUND: The optimal duration of dual antiplatelet therapy (DAPT) after drug-eluting stent (DES) implantation remains undetermined, especially for those at high risk of cardiac events postprocedure. OBJECTIVES: This study was aimed to investigate the impact of 6 versus 12 months of DAPT after DES implantation based on risk stratification with the residual SYNTAX score (rSS). METHODS: A total of 2737 patients in the I-LOVE-IT 2 trial were grouped according to rSS status (low rSS [rSS = 0, n = 1474] versus high rSS [rSS > 0, n = 1263]) and DAPT duration (6 months vs...
February 17, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28209058/rare-sugar-syrup-containing-d-allulose-but-not-high-fructose-corn-syrup-maintains-glucose-tolerance-and-insulin-sensitivity-partly-via-hepatic-glucokinase-translocation-in-wistar-rats
#3
Tomoya Shintani, Takako Yamada, Noriko Hayashi, Tetsuo Iida, Yasuo Nagata, Nobuaki Ozaki, Yukiyasu Toyoda
Ingestion of high fructose corn syrup (HFCS) is associated with the risk of both diabetes and obesity. Rare sugar syrup (RSS) has been developed by alkaline isomerization of HFCS and has anti-obesity and anti-diabetic effects. However, the influence of RSS on glucose metabolism has not been explored. We investigated whether long-term administration of RSS maintains glucose tolerance and whether the underlying mechanism involves hepatic glucokinase translocation. Wistar rats were administered water, RSS, or HFCS in drinking water for 10 weeks, and then evaluated for glucose tolerance, insulin tolerance, liver glycogen content, and subcellular distribution of liver glucokinase...
February 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28176426/modeling-of-s-nitrosothiol-thiol-reactions-of-biological-significance-hno-production-via-s-thiolation-requires-a-proton-shuttle-and-stabilization-of-polar-intermediates
#4
Lena V Ivanova, Daniel Cibich, Gregory Deye, Marat R Talipov, Qadir Timerghazin
Nitroxyl HNO, a reduced form of an important gasotransmitter nitric oxide, exhibits its own unique biological activity. A possible biological pathway of HNO formation is S-thiolation reaction between thiols and S-nitrosothiols (RSNOs). Our DFT calculations suggests that S-thiolation proceeds through a proton transfer from thiol to the RSNO nitrogen atom, which increases electrophilicity of the RSNO sulfur, followed by nucleophilic attack by thiol yielding a charge-separated zwitterionic intermediate structure RSS+(R)N(H)O- (Zi), that decomposes yielding HNO and disulfide RSSR...
February 7, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28165423/a-novel-physical-layer-assisted-authentication-scheme-for-mobile-wireless-sensor-networks
#5
Qiuhua Wang
Physical-layer authentication can address physical layer vulnerabilities and security threats in wireless sensor networks, and has been considered as an effective complementary enhancement to existing upper-layer authentication mechanisms. In this paper, to advance the existing research and improve the authentication performance, we propose a novel physical layer assisted authentication scheme for mobile wireless sensor networks. In our proposed scheme, we explore the reciprocity and spatial uncorrelation of the wireless channel to verify the identities of involved transmitting users and decide whether all data frames are from the same sender...
February 4, 2017: Sensors
https://www.readbyqxmd.com/read/28163694/hand-to-face-remapping-but-no-differences-in-temporal-discrimination-observed-on-the-intact-hand-following-unilateral-upper-limb-amputation
#6
Kassondra L Collins, Danielle L McKean, Katherine Huff, Mark Tommerdahl, Oleg Vyacheslavovich Favorov, Robert S Waters, Jack W Tsao
Unilateral major limb amputation causes changes in sensory perception. Changes may occur within not only the residual limb but also the intact limb as well as the brain. We tested the hypothesis that limb amputation may result in the detection of hand sensation during stimulation of a non-limb-related body region. We further investigated the responses of unilateral upper limb amputees and individuals with all limbs intact to temporally based sensory tactile testing of the fingertips to test the hypothesis that changes in sensory perception also have an effect on the intact limb...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28153308/dual-functional-fluorescent-probe-responds-to-hypochlorous-acid-and-so2-derivatives-with-different-fluorescence-signals
#7
Hui Yu, Yongna Wu, Yue Hu, Xudong Gao, Qing Liang, Jian Xu, Shijun Shao
In view of the important roles of reactive oxygen species (ROS) and reactive sulfur species (RSS) in the complex signal transduction and oxidation pathways, fluorescent probes that are able to display distinct signals to hypochlorous acid and SO2 derivatives are highly valuable. Herein, a novel dual-functional probe (DFP) as an efficient single fluorescent-molecule which can respond to HClO and HSO3(-) with two different sets of fluorescence signals was presented. The DFP displayed desired properties such as high specificity, suitable sensitivity, appreciable water solubility and stability...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28125741/formation-of-core-shell-nanoparticles-composed-of-magnetite-and-samarium-oxide-in-magnetospirillum-magneticum-strain-rss-1
#8
Hirokazu Shimoshige, Yoshikata Nakajima, Hideki Kobayashi, Keiichi Yanagisawa, Yutaka Nagaoka, Shigeru Shimamura, Toru Mizuki, Akira Inoue, Toru Maekawa
Magnetotactic bacteria (MTB) synthesize magnetosomes composed of membrane-enveloped magnetite (Fe3O4) or greigite (Fe3S4) particles in the cells. Recently, several studies have shown some possibilities of controlling the biomineralization process and altering the magnetic properties of magnetosomes by adding some transition metals to the culture media under various environmental conditions. Here, we successfully grow Magnetospirillum magneticum strain RSS-1, which are isolated from a freshwater environment, and find that synthesis of magnetosomes are encouraged in RSS-1 in the presence of samarium and that each core magnetic crystal composed of magnetite is covered with a thin layer of samarium oxide (Sm2O3)...
2017: PloS One
https://www.readbyqxmd.com/read/28122418/improving-clinical-management-of-women-with-borderline-tumours-a-recurrence-risk-scoring-system-from-a-french-multicenter-study
#9
Lobna Ouldamer, Sofiane Bendifallah, Myriam Nikpayam, Gilles Body, Xavier Fritel, Catherine Uzan, Philippe Morice, Emile Daraï, Marcos Ballester
OBJECTIVE: To develop a risk scoring system (RSS) for predicting recurrence in women with borderline ovarian tumours (BOT). DESIGN: Cohort study of women with BOT SETTING: French multicenter tertiary care centers. POPULATION: 360 women with BOT who received primary surgical treatment between January 2000 and December 2013. METHODS: Clinical and pathological factors impacting recurrence in women with BOT. MAIN OUTCOME MEASURES: Development of a model for the prediction of recurrence in women with BOT...
January 25, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28117282/modified-residual-syntax-score-and-clinical-outcomes-in-patients-with-multivessel-disease-undergoing-percutaneous-coronary-intervention
#10
Taek Kyu Park, Joo-Yong Hahn, Jeong Hoon Yang, Young Bin Song, Seung-Hyuk Choi, Jin-Ho Choi, Sang Hoon Lee, Joonghyun Ahn, Keumhee Cho Carriere, Hyeon-Cheol Gwon
AIMS: We sought to determine reasonable level of revascularization using the modified residual Synergy Between percutaneous coronary intervention (PCI) with Taxus and Cardiac Surgery (SYNTAX) score in patients undergoing PCI. METHODS AND RESULTS: In 3,460 patients with multivessel disease receiving drug-eluting stents, residual SYNTAX score (rSS) was calculated for lesions with ≥50% diameter stenosis in vessels ≥1.5 mm after PCI. "Modified" rSS (mrSS) was determined by counting lesions with ≥70% diameter stenosis in vessels ≥2...
January 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28106508/gelma-encapsulated-hdpscs-and-huvecs-for-dental-pulp-regeneration
#11
A Khayat, N Monteiro, E E Smith, S Pagni, W Zhang, A Khademhosseini, P C Yelick
Pulpal revascularization is commonly used in the dental clinic to obtain apical closure of immature permanent teeth with thin dentinal walls. Although sometimes successful, stimulating bleeding from the periapical area of the tooth can be challenging and in turn may deleteriously affect tooth root maturation. Our objective here was to define reliable methods to regenerate pulp-like tissues in tooth root segments (RSs). G1 RSs were injected with human dental pulp stem cells (hDPSCs) and human umbilical vein endothelial cells (HUVECs) encapsulated in 5% gelatin methacrylate (GelMA) hydrogel...
February 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28098239/immunoglobulin-light-chain-igl-genes-in-torafugu-genomic-organization-and-identification-of-a-third-teleost-igl-isotype
#12
Xi Fu, Fengjun Zhang, Shugo Watabe, Shuichi Asakawa
Here, we report a genome-wide survey of immunoglobulin light chain (IGL) genes of torafugu (Takifugu rubripes) revealing multi-clusters spanning three separate chromosomes (v5 assembly) and 45 scaffolds (v4 assembly). Conventional sequence similarity searches and motif scanning approaches based on recombination signal sequence (RSS) motifs were used. We found that three IGL isotypes (L1, L2, and L3) exist in torafugu and that several loci for each isotype are present. The transcriptional orientations of the variable IGL (VL) segments were found to be either the same (in the L2 isotype) or opposite (in the L1 and L3 isotypes) to the IGL joining (JL) and constant (CL) segments, suggesting they can undergo rearrangement by deletion or inversion when expressed...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28087825/incidence-and-predictors-of-epilepsy-after-pediatric-arterial-ischemic-stroke
#13
Lori L Billinghurst, Lauren A Beslow, Nicholas S Abend, Michael Uohara, Laura Jastrzab, Daniel J Licht, Rebecca N Ichord
OBJECTIVE: To determine the cumulative incidence and clinical predictors of remote symptomatic seizures and epilepsy after pediatric arterial ischemic stroke (AIS). METHODS: We performed a retrospective analysis of 218 participants with neonatal AIS (NAIS), presumed perinatal AIS (PPAIS), and childhood AIS (CAIS) from a single-center prospective consecutive cohort enrolled from 2006 to 2014. Medical records were reviewed for timing, semiology, and treatment of acute symptomatic seizures, remote symptomatic seizures (RSS), and epilepsy...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28068571/photocatalytic-degradation-of-clofibric-acid-by-g-c3n4-p25-composites-under-simulated-sunlight-irradiation-the-significant-effects-of-reactive-species
#14
Ping Chen, Fengliang Wang, Qianxin Zhang, Yuehan Su, Lingzhi Shen, Kun Yao, Zhi-Feng Chen, Yang Liu, Zongwei Cai, Wenying Lv, Guoguang Liu
Pharmaceutically emerging micropollutants have become an environmental concern in recent years. In the present paper, the reactive species (RSs)-induced degradation mechanism of clofibric acid (CA) was investigated using a newly sunlight-driven g-C3N4/P25 photocatalyst. A very low g-C3N4 content of 8.0 weight percent resulted in a 3.36 and a 2.29 times faster reaction rate for CA photodegradation than for pristine g-C3N4 and P25, respectively. Electron spin resonance and quenching experiments demonstrated the participation of HO, h(+), e(-), (1)O2 and O2(·-) in the photocatalytic system, and the contribution rates were calculated to 73...
April 2017: Chemosphere
https://www.readbyqxmd.com/read/28065637/the-steroid-metabolite-16-%C3%AE-oh-androstenedione-generated-by-cyp21a2-serves-as-a-substrate-for-cyp19a1
#15
J Neunzig, M Milhim, L Schiffer, Y Khatri, J Zapp, A Sánchez-Guijo, M F Hartmann, S A Wudy, R Bernhardt
The 21-hydroxylase (CYP21A2) is a steroidogenic enzyme crucial for the synthesis of mineralo- and glucocorticoids. It is described to convert progesterone as well as 17-OH-progesterone, through a hydroxylation at position C21, into 11-deoxycorticosterone (DOC) and 11-deoxycortisol (RSS), respectively. In this study we unraveled CYP21A2 to have a broader steroid substrate spectrum than assumed. Utilizing a reconstituted in vitro system, consisting of purified human CYP21A2 and human cytochrome P450 reductase (CPR) we demonstrated that CYP21A2 is capable to metabolize DOC, RSS, androstenedione (A4) and testosterone (T)...
March 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28051989/minute-ventilation-limitations-of-two-field-transport-ventilators
#16
Dale F Szpisjak, Gregory Horn, Samuel Shalov, Alvin Angelo Abes, Lauren Van Decar
Knowledge of transport ventilator performance impacts patient safety. This study compared minute ventilation (VE) of the MOVES and Uni-Vent 731 when ventilating the VentAid Training Test Lung with compliance (C) ranging from 0.02 to 0.10 L/cm H2O and three different airway resistances (R) (none, Rp5, or Rp20). Tidal volume (VT) was 800 ± 25 mL. Respiratory rate was increased to ventilator's maximum or until auto-PEEP > 5 cm H2O. Respiratory parameters were recorded with the RSS 100HR Research Pneumotach...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28051338/activity-dependent-sulfhydration-signal-controls-nmdar-dependent-synaptic-plasticity-via-increasing-d-serine-availability
#17
Yuan-Long Li, Pei-Fei Wu, Jian-Guo Chen, Sheng Wang, Qian-Qian Han, Dan Li, Wen Wang, Xin-Lei Guan, Di Li, Li-Hong Long, Jian-Geng Huang, Fang Wang
AIMS: Reactive sulfur species (RSS) including hydrogen sulfide (H2S) and its oxydates have been raised as novel redox signaling molecules. The present study aimed at examining whether endogenous sulfhydration signal are required for long-term potentiation (LTP), a cellular model for memory. RESULTS: Here, we found that increased synaptic activity triggered sulfide generationand protein sulfhydration. Activity-triggered sulfide production was essential for N-methyl-D-aspartate subtype glutamate receptors (NMDARs)-dependent LTP via maintaining the availability of D-serine, a primary co-agonist for synaptic NMDARs...
January 4, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28048462/su-d-brb-01-a-comparison-of-learning-methods-for-knowledge-based-dose-prediction-for-coplanar-and-non-coplanar-liver-radiotherapy
#18
A Tran, D Ruan, K Woods, V Yu, D Nguyen, K Sheng
PURPOSE: The predictive power of knowledge based planning (KBP) has considerable potential in the development of automated treatment planning. Here, we examine the predictive capabilities and accuracy of previously reported KBP methods, as well as an artificial neural networks (ANN) method. Furthermore, we compare the predictive accuracy of these methods on coplanar volumetric-modulated arc therapy (VMAT) and non-coplanar 4π radiotherapy. METHODS: 30 liver SBRT patients previously treated using coplanar VMAT were selected for this study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044933/should-arterial-embolization-in-recurrent-spontaneous-hemophilic-hemarthroses-refractory-to-intensive-prophylaxis-be-the-first-invasive-resort
#19
E Carlos Rodriguez-Merchan
This paper reviews the role of arterial embolization (AE) in recurrent spontaneous hemarthroses (RSH) that are refractory to intensive prophylaxis (RIP) in people with hemophilia (PWH). There are six articles in the literature on the topic. The total number of AEs performed so far is 78 in 69 patients. Four second AEs were required (4/78), and a third AE in one (1/78). No serious adverse effects have been reported except for a pseudoaneurym (1/78) of the femoral artery at the puncture site (that eventually required surgical repair) and for one patient (1/78) that had recurrence of bleeding for whom surgical exploration was required...
December 16, 2016: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28039168/correlation-of-the-rutgeerts-score-and-recurrence-of-crohn-s-disease-in-patients-with-end-ileostomy
#20
Vasutakarn Chongthammakun, Andre Fialho, Andrea Fialho, Rocio Lopez, Bo Shen
BACKGROUND: Recurrence of Crohn's disease (CD) can occur after surgery, including end ileostomy (EI). The Rutgeerts score (RS) was developed to predict postsurgical CD recurrence via ileocolonoscopy in patients having ileocolonic resection. The role of ileoscopic evaluation via stoma for assessing recurrence of CD has not been investigated. The aim of this study was to evaluate the role of ileoscopy for predicting disease recurrence in CD patients after EI with the use of RS. METHODS: A total of 73 eligible CD patients with at least two ileoscopies in our institution following EI were included...
December 30, 2016: Gastroenterology Report
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