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https://www.readbyqxmd.com/read/28655190/right-ventricular-function-during-exercise-in-children-after-heart-transplantation
#1
B Cifra, C T Morgan, A Dragulescu, V C Guerra, C Slorach, M K Friedberg, C Manlhiot, B W McCrindle, A I Dipchand, L Mertens
Aims: Right ventricular (RV) dysfunction is a common problem after heart transplant (HTx). In this study, we used semi-supine bicycle ergometry (SSBE) stress echocardiography to evaluate RV systolic and diastolic reserve in paediatric HTx recipients. Methods and results: Thirty-nine pediatric HTx recipients and 23 controls underwent stepwise SSBE stress echocardiography. Colour tissue doppler imaging (TDI) peak systolic (s') and peak diastolic (e') velocities, myocardial acceleration during isovolumic contraction (IVA), and RV free wall longitudinal strain were measured at incremental heart rates (HR)...
June 23, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28654928/risk-stratification-of-patients-with-crohn-s-disease-a-retrospective-analysis-of-clinical-decision-making-and-its-impact-on-long-term-outcome
#2
Mahmoud Mosli, Hanadi Sabbahi, Hind Alyousef, Mada Abdulhaq, Afnan Hadadi, Emad Aljahdali, Hani Jawa, Salem Bazarah, Yousif Qari
BACKGROUND AND AIMS: Complications such as need for bowel resections and hospitalization due to Crohn's disease (CD) occur when disease activity persists due to ineffective therapy. Certain "high-risk" features require an early introduction of anti-tumor necrosis factor-α therapy to prevent such complications. We aim to evaluate the prevalence of "high-risk" features among a cohort of patients with CD and examine the association between discordance of early therapy with baseline risk stratification and disease outcome...
June 28, 2017: Digestive Diseases
https://www.readbyqxmd.com/read/28654853/association-of-matrix-%C3%AE-carboxyglutamic-acid-protein-levels-with-insulin-resistance-and-lp-a-in-diabetes-a-cross-sectional-study
#3
Stavros Antonopoulos, Maria Mylonopoulou, Angeliki M Angelidi, Antonis A Kousoulis, Nicholas Tentolouris
AIMS: The risk of cardiovascular disease (CVD) and mortality is increased in patients with chronic kidney disease (CKD), with a background role of vascular calcification in the development of CVD also reported. Studies have demonstrated that high lipoprotein(a) (Lp(a)) levels accelerate the development of atherosclerolsis and are potentially involved in the vascular calcification. Matrix Gla Protein (MGP) seems to play an important role in vascular calcification. The aim of the study was to examine the potential association of MGP concentrations with Lp(a) and insulin resistance...
June 19, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28654836/addition-of-seaweed-and-bentonite-accelerates-the-two-stage-composting-of-green-waste
#4
Lu Zhang, Xiangyang Sun
Green waste (GW) is an important recyclable resource, and composting is an effective technology for the recycling of organic solid waste, including GW. This study investigated the changes in physical and chemical characteristics during the two-stage composting of GW with or without addition of seaweed (SW, Ulva ohnoi) (at 0, 35, and 55%) and bentonite (BT) (at 0.0, 2.5%, and 4.5%). During the bio-oxidative phase, the combined addition of SW and BT improved the physicochemical conditions, increased the respiration rate and enzyme activities, and decreased ammonia and nitrous oxide emissions...
June 20, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28654815/flipping-around-the-classroom-accelerated-bachelor-of-science-in-nursing-students-satisfaction-and-achievement
#5
Majeda M El-Banna, Malinda Whitlow, Angela M McNelis
BACKGROUND: The flipped classroom approach is based on shared responsibility for learning by students and teachers, and empowers students to take an active role in the learning process. While utilization of this approach has resulted in higher exam scores compared to traditional approaches in prior studies, the flipped classroom has not included learners in Accelerated Bachelor of Science in Nursing (ABSN) programs. OBJECTIVE: To examine differences on exam scores and satisfaction of teaching between a 3-week flipped and traditional classroom approach...
June 19, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28654676/silver-bighead-and-common-carp-orient-to-acoustic-particle-motion-when-avoiding-a-complex-sound
#6
Daniel P Zielinski, Peter W Sorensen
Behavioral responses of silver carp (Hypopthalmichthys molitrix), bighead carp (H. nobilis), and common carp (Cyprinus carpio) to a complex, broadband sound were tested in the absence of visual cues to determine whether these species are negatively phonotaxic and the roles that sound pressure and particle motion might play mediating this response. In a dark featureless square enclosure, groups of 3 fish were tracked and the distance of each fish from speakers and their swimming trajectories relative to sound pressure and particle acceleration were analyzed before, and then while an outboard motor sound was played...
2017: PloS One
https://www.readbyqxmd.com/read/28654659/environmental-change-drives-accelerated-adaptation-through-stimulated-copy-number-variation
#7
Ryan M Hull, Cristina Cruz, Carmen V Jack, Jonathan Houseley
Copy number variation (CNV) is rife in eukaryotic genomes and has been implicated in many human disorders, particularly cancer, in which CNV promotes both tumorigenesis and chemotherapy resistance. CNVs are considered random mutations but often arise through replication defects; transcription can interfere with replication fork progression and stability, leading to increased mutation rates at highly transcribed loci. Here we investigate whether inducible promoters can stimulate CNV to yield reproducible, environment-specific genetic changes...
June 2017: PLoS Biology
https://www.readbyqxmd.com/read/28654510/late-ina-inhibition-as-an-antiarrhythmic-strategy
#8
Alexander Burashnikov
Late sodium channel current (late INa) is considered to be an anti-arrhythmic target. The prime anti-arrhythmic mechanisms of late INa inhibition have been suggested to be 1) suppression of intracellular calcium [Cai]-mediated rhythmic activity (via reduction of Cai secondary to the decrease of intracellular sodium [Nai]) and 2) normalization of repolarization. Endogenous late INa is a small current and acceleration of heart rate decreases late INa density. Late INa influx may significantly contribute to Nai loading, but it appears to largely occur in the combined conditions of augmented late INa density, bradycardia, and prolonged repolarization...
June 22, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28654423/daily-wrist-activity-classification-using-a-smart-band
#9
Nhan Duc Nguyen, Phuc Huu Truong, Gu-Min Jeong
In this letter, we propose a novel method for classifying daily wrist activities by using a smart band. Triaxial acceleration data are collected by built-in sensors of the smart band during experiments regarding five activities, i.e., texting, calling, placing a hand in a pocket, carrying a suitcase, and swinging a hand. We analyze patterns in the sensor signals during these activities based on three types of features, i.e., norm, norm-variance, and frequency-domain features. After extracting the significant features, a multi-class support vector machine (SVM) algorithm is applied to classify these activities...
June 27, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28654223/the-pomegranate-punica-granatum-l-genome-and-the-genomics-of-punicalagin-biosynthesis
#10
Gaihua Qin, Chunyan Xu, Ray Ming, Haibao Tang, Romain Guyot, Elena M Kramer, Yudong Hu, Xingkai Yi, Yongjie Qi, Xiangyang Xu, Zhenghui Gao, Haifa Pan, Jianbo Jian, Yinping Tian, Zhen Yue, Yiliu Xu
Pomegranate (Punica granatum L.) is a perennial fruit crop grown since ancient times that has been planted worldwide and is known for its functional metabolites, particularly punicalagins. We have sequenced and assembled the pomegranate genome with 328 Mb anchored into nine pseudo-chromosomes and annotated 29 229 gene models. A Myrtales lineage-specific whole-genome duplication (WGD) event was detected that occurred in the common ancestor before the divergence of pomegranate and Eucalyptus. Repetitive sequences accounted for 46...
June 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28654149/young-adult-survivors-of-childhood-acute-lymphoblastic-leukemia-show-evidence-of-chronic-inflammation-and-cellular-aging
#11
Hany Ariffin, Mohamad Shafiq Azanan, Sayyidatul Syahirah Abd Ghafar, Lixian Oh, Kee Hie Lau, Tharshanadhevasheri Thirunavakarasu, Atiqah Sedan, Kamariah Ibrahim, Adelyne Chan, Tong Foh Chin, Fong Fong Liew, Shareni Jeyamogan, Erda Syerena Rosli, Rashidah Baharudin, Tsiao Yi Yap, Roderick Skinner, Su Han Lum, Pierre Hainaut
BACKGROUND: Large epidemiologic studies have reported the premature onset of age-related conditions, such as ischemic heart disease and diabetes mellitus, in childhood cancer survivors, decades earlier than in their peers. The authors investigated whether young adult survivors of childhood acute lymphoblastic leukemia (ALL) have a biologic phenotype of cellular ageing and chronic inflammation. METHODS: Plasma inflammatory cytokines were measured using a cytometric bead array in 87 asymptomatic young adult survivors of childhood ALL (median age, 25 years; age range, 18-35 years) who attended annual follow-up clinic and compared with healthy, age-matched and sex-matched controls...
June 27, 2017: Cancer
https://www.readbyqxmd.com/read/28654107/in-situ-cathodic-activation-of-v-incorporated-nixsy-nanowires-for-enhanced-hydrogen-evolution
#12
Xiao Shang, Kai-Li Yan, Yi Rao, Bin Dong, Jing-Qi Chi, Yan-Ru Liu, Xiao Li, Yong-Ming Chai, Chen-Guang Liu
In situ cathodic activation (ISCA) of V-incorporated NixSy nanowires supported on nickel foam (VS/NixSy/NF) can be realized in an alkaline hydrogen evolution reaction (HER) process, which provides not only clearly enhanced activity but also ultrahigh stability for HER. The ISCA process is continuous linear sweep voltammetry (LSV) on VS/NixSy/NF as a cathodic electrode with gradually enhanced HER activity. The activated VS/NixSy/NF (A-VS/NixSy/NF) demonstrates enhanced HER activity with an overpotential of 125 mV to drive 10 mA cm(-2), which is much lower than that of other samples...
June 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28654047/neonatal-murine-cochlear-explant-technique-as-an-in-vitro-screening-tool-in-hearing-research
#13
Lukas D Landegger, Sonam Dilwali, Konstantina M Stankovic
While there have been remarkable advances in hearing research over the past few decades, there is still no cure for Sensorineural Hearing Loss (SNHL), a condition that typically involves damage to or loss of the delicate mechanosensory structures of the inner ear. Sophisticated in vitro and ex vivo assays have emerged in recent years, enabling the screening of an increasing number of potentially therapeutic compounds while minimizing resources and accelerating efforts to develop cures for SNHL. Though homogenous cultures of certain cell types continue to play an important role in current research, many scientists now rely on more complex organotypic cultures of murine inner ears, also known as cochlear explants...
June 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28654021/vitamin-c-aging-and-alzheimer-s-disease
#14
REVIEW
Fiammetta Monacelli, Erica Acquarone, Chiara Giannotti, Roberta Borghi, Alessio Nencioni
Accumulating evidence in mice models of accelerated senescence indicates a rescuing role of ascorbic acid in premature aging. Supplementation of ascorbic acid appeared to halt cell growth, oxidative stress, telomere attrition, disorganization of chromatin, and excessive secretion of inflammatory factors, and extend lifespan. Interestingly, ascorbic acid (AA) was also found to positively modulate inflamm-aging and immunosenescence, two hallmarks of biological aging. Moreover, ascorbic acid has been shown to epigenetically regulate genome integrity and stability, indicating a key role of targeted nutrition in healthy aging...
June 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28653959/mechanical-optical-electro-modulation-by-stretching-a-polymer-metal-nanocomposite
#15
Chloe Minnai, Marcel Di Vece, Paolo Milani
We report the simultaneous investigation of both the plasmonic resonance and electrical conductance evolution in stretchable metal-polymer nanocomposite films. The films are produced by the implantation of neutral gold nanoparticles in a Polydimethylsiloxane substrate by aerodynamically acceleration in a supersonic expansion. A redshift of the gold nanoparticle plasmon peak is found upon stretching as well as a strong correlation between the plasmonic peak wavelength and the nanocomposite electrical resistance...
June 27, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28653931/impact-of-different-organic-acids-on-solubility-enhancement-of-cefpodxime-proxetil-immediate-release-tablet-and-its-stability-studies
#16
Sabahat Jabeen, Fouzia Hassan, Rabia Ismail Yousuf, Muhammad Harris Shoaib, Fozia Israr, S M Farid Hasan, Rehana Saeed, Sadaf Farooqi
Cefpodoxime proxetil is a third generation cephalosporin antibiotic demonstrates pH dependent solubility and is highly soluble only in acidic pH. The purpose of this investigation was to design and develop immediate release tablets of cefpodoxime proxetil by direct compression method and determine the effect of different solid buffers (organic acids) such as fumaric acid (formulations F1-F4), maleic acid (formulations M1-M4) and citric acid (formulations C1-C4) by using cefpodoxime and acid in the ratios of 4:1, 2:1, 1:1 and 1:2 to achieve pH-independent release of the drug...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28653788/mir-497-accelerates-oxidized-low-density-lipoprotein-induced-lipid-accumulation-in-macrophages-by-repressing-the-expression-of-apelin
#17
Junfeng Cui, Zhong Ren, Wenshuang Zou, Yanling Jiang
microRNAs (miRNAs) play important roles in the pathogenesis of atherosclerosis. A previous study has reported that miR-497 is elevated in advanced atherosclerotic lesions in an apoE-deficient (apoE-/-) mouse model. The purpose of this study is to test whether miR-497 can modulate macrophage foam cell formation, an initiating event in atherosclerosis. We found that miR-497 was upregulated in THP-1 macrophages after treatment with oxidized low-density lipoprotein (oxLDL). Enforced expression of miR-497 promoted lipid accumulation and decreased cholesterol efflux in oxLDL-exposed THP-1 macrophages...
June 27, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28653779/adrenal-maturation-nutritional-status-and-mucosal-immunity-in-bolivian-youth
#18
Carolyn R Hodges-Simeon, Sean P Prall, Aaron D Blackwell, Michael Gurven, Steven J C Gaulin
OBJECTIVES: Humans-and several other apes-exhibit a unique pattern of post-natal adrenal maturation; however, the causes and consequences of variation in adrenal development are not well understood. In this study, we examine developmental and age-related maturation of the adrenal gland (measured via dehydroepiandrosterone-sulfate [DHEA-S]) for potential life-history associations with growth and mucosal immunity in a rural population of immune-challenged Bolivian juveniles and adolescents...
June 27, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28653428/effects-of-dextroamphetamine-in-subacute-traumatic-brain-injury-a-randomized-placebo-controlled-pilot-study
#19
Tessa Hart, John Whyte, Thomas Watanabe, Inna Chervoneva
Psychostimulants that affect neurotransmitters implicated in cognitive function and neural plasticity have potential to enhance the rate and extent of recovery after traumatic brain injury (TBI). Ten milligrams dextroamphetamine (DEX) or an identical placebo was administered daily for 3 weeks to 32 participants with moderate to severe TBI, engaged in inpatient rehabilitation, at a mean of 2 months post injury. A variety of outcome measures assessing cognitive function and overall functional status was administered at weekly intervals, to examine effect sizes that may inform a larger trial, and to evaluate safety...
June 27, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28653386/long-term-control-of-olfactory-neuroblastoma-in-a-dog-treated-with-surgery-and-radiation-therapy
#20
E Gumpel, A S Moore, D J Simpson, K L Hoffmann, D P Taylor
BACKGROUND: Olfactory neuroblastoma is a rare malignancy of the nasal cavity in dogs that is thought to arise from specialised sensory neuroendocrine olfactory cells derived from the neural crest. CASE REPORT: An 8-year-old dog was presented for reclusiveness and pacing. On CT and MRI, a contract-enhancing mass was disclosed within the rostral fossa, extending caudally from the cribriform plate into the left nasal sinus. Surgical excision was performed and the diagnosis was histological grade III (Hyams grading scheme) olfactory neuroblastoma...
July 2017: Australian Veterinary Journal
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