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https://www.readbyqxmd.com/read/28335426/elevated-serum-hepcidin-levels-during-an-intensified-training-period-in-well-trained-female-long-distance-runners
#1
Aya Ishibashi, Naho Maeda, Daichi Sumi, Kazushige Goto
Iron is essential for providing oxygen to working muscles during exercise, and iron deficiency leads to decreased exercise capacity during endurance events. However, the mechanism of iron deficiency among endurance athletes remains unclear. In this study, we compared iron status between two periods involving different training regimens. Sixteen female long-distance runners participated. Over a seven-month period, fasting blood samples were collected during their regular training period (LOW; middle of February) and during an intensified training period (INT; late of August) to determine blood hematological, iron, and inflammatory parameters...
March 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28332413/interlaboratory-validation-of-an-lc-ms-ms-method-for-the-determination-of-melamine-and-cyanuric-acid-in-animal-feed
#2
Hildburg Fry, Kerstin Mietle, Eileen Mähnert, Sebastian Zinke, Mandy Schwieters, Emanuele Pydde, Angelika Preiß-Weigert
Melamine and cyanuric acid have been mixed illegally into food and feed to increase the nitrogen content which results in deceptively high protein contents. As a consequence a maximum level for melamine of 2.5 mg kg(-1) feed was established by the European Union under directive 2002/32/EC. A method is required to quantify melamine and cyanuric acid for control of the maximum level. Therefore Technical Committee (TC) 327 of the European Committee for Standardisation (CEN) commissioned the standardisation of a method for the analysis of melamine and cyanuric acid in animal feed...
March 23, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28330743/temporal-dynamics-of-immediate-early-gene-expression-during-cellular-consolidation-of-spatial-memory
#3
Daniel N Barry, Sean Commins
The consolidation of newly acquired memories on a cellular level is thought to take place in the first few hours following learning. This process is dependent on de novo protein synthesis during this time, which ultimately leads to long-term structural and functional neuronal changes and the stabilisation of a memory trace. Immediate early genes (IEGs) are rapidly expressed in neurons following learning, and previous research has suggested more than one wave of IEG expression facilitates consolidation in the hours following learning...
March 19, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28330378/effects-of-exercise-training-on-kinin-receptors-expression-in-rats-with-myocardial-infarction
#4
Mei Shen, Min Yu, Jingya Li, Li Ma
OBJECTIVES: The objective of this study is to determine the role of kinin B1 and B2 receptors in exercise-induced cardiac muscle angiogenesis. METHOD: Thirty Wistar rats were randomly assigned to the control group, the myocardial infarction group and the exercise training group (myocardial infarction model was made and received 30 min exercise training on a treadmill). After 4 weeks of experiment, cardiac muscle was harvested. RESULTS: B1 and B2 receptor mRNA and protein levels in the exercise-training group were significantly higher than those in the myocardial infarction group, which were higher than those in the control group...
March 23, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28330163/probing-an-optimal-class-distribution-for-enhancing-prediction-and-feature-characterization-of-plant-virus-encoded-rna-silencing-suppressors
#5
Abhigyan Nath, Karthikeyan Subbiah
To counter the host RNA silencing defense mechanism, many plant viruses encode RNA silencing suppressor proteins. These groups of proteins share very low sequence and structural similarities among them, which consequently hamper their annotation using sequence similarity-based search methods. Alternatively the machine learning-based methods can become a suitable choice, but the optimal performance through machine learning-based methods is being affected by various factors such as class imbalance, incomplete learning, selection of inappropriate features, etc...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328712/resistance-training-induced-elevations-in-muscular-strength-in-trained-men-are-maintained-after-2-weeks-of-detraining-and-not-differentially-affected-by-whey-protein-supplementation
#6
Paul S Hwang, Thomas L Andre, Sarah K McKinley-Barnard, Flor E Morales Marroquín, Joshua J Gann, Joon J Song, Darryn S Willoughby
Hwang, PS, Andre, TL, McKinley-Barnard, SK, Morales Marroquín, FE, Gann, JJ, Song, JJ, and Willoughby, DS. Resistance training-induced elevations in muscular strength in trained men are maintained after 2 weeks of detraining and not differentially affected by whey protein supplementation. J Strength Cond Res 31(4): 869-881, 2017-Resistance training (RT) with nutritional strategies incorporating whey protein intake postexercise can stimulate muscle protein synthesis and elicit hypertrophy. The early phases of training-induced anabolic responses can be attenuated with longer-term training...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28326041/influence-of-estimated-training-status-on-anti-and-pro-oxidant-activity-nitrite-concentration-and-blood-pressure-in-middle-aged-and-older-women
#7
André M Jacomini, Danielle da Silva Dias, Janaina de Oliveira Brito, Roberta F da Silva, Henrique L Monteiro, Susana Llesuy, Kátia De Angelis, Sandra L Amaral, Anderson S Zago
The purpose of this study was to compare the association between anti and pro-oxidant activity, nitrite concentration, and blood pressure (BP) in middle-aged and older women with different levels of estimated training status (TS). The sample consisted of 155 females (50-84 years) who were submitted to a physical examination to evaluate estimated TS through the "Functional Fitness Battery Test," BP measurements, and plasma blood samples to evaluate pro-oxidant and antioxidant activity and nitrite concentrations...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28323139/inflammation-and-post-operative-recovery-in-patients-undergoing-total-knee-arthroplasty-secondary-analysis-of-a-randomized-controlled-trial
#8
Anne Langkilde, Thomas Linding Jakobsen, Thomas Quaade Bandholm, Jesper Eugen-Olsen, Thomas Blauenfeldt, Janne Petersen, Ove Andersen
OBJECTIVE: Reduced function persists for many patients after total knee arthroplasty (TKA). Inflammation is part of osteoarthritis' pathophysiology, and surgery induces a marked inflammatory response. We therefore wanted to explore the role of inflammation in long-term recovery after TKA, and thus conducted this secondary analysis of our randomized controlled trial of physical rehabilitation +/- progressive strength training (PST). We aimed to investigate whether A) inflammation is associated with functional performance, knee-extension strength, and knee pain before TKA; B) PST affects inflammation, and the inflammatory state over time; C) baseline or surgery-induced inflammation modifies the effect of rehabilitation +/- PST on change in 6-minute walk test (Δ6MWT); and D) baseline or surgery-induced inflammation is associated with Δ6MWT following TKA...
March 16, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28321925/effects-of-6-months-aerobic-interval-training-on-skeletal-muscle-metabolism-in-middle-aged-metabolic-syndrome-patients
#9
A Guadalupe-Grau, V E Fernández-Elías, J F Ortega, F Dela, J W Helge, R Mora Rodríguez
AIM: Aerobic interval training (AIT) improves the health of metabolic syndrome patients (MetS) more than moderate intensity continuous training. However, AIT has not been shown to reverse all metabolic syndrome risk factors, possibly due to the limited duration of the training programs. PURPOSE: To assess the effects of 6 months of AIT on cardio-metabolic health and muscle metabolism in middle aged MetS. METHODS: Eleven MetS (54.5 ± 0.7 yrs old) underwent 6 month of 3 days a week supervised AIT program on a cycle-ergometer...
March 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28321365/testing-the-habituation-assumption-underlying-models-of-parasitoid-foraging-behavior
#10
Paul K Abram, Antonino Cusumano, Katrina Abram, Stefano Colazza, Ezio Peri
BACKGROUND: Habituation, a form of non-associative learning, has several well-defined characteristics that apply to a wide range of physiological and behavioral responses in many organisms. In classic patch time allocation models, habituation is considered to be a major mechanistic component of parasitoid behavioral strategies. However, parasitoid behavioral responses to host cues have not previously been tested for the known, specific characteristics of habituation. METHODS: In the laboratory, we tested whether the foraging behavior of the egg parasitoid Trissolcus basalis shows specific characteristics of habituation in response to consecutive encounters with patches of host (Nezara viridula) chemical contact cues (footprints), in particular: (i) a training interval-dependent decline in response intensity, and (ii) a training interval-dependent recovery of the response...
2017: PeerJ
https://www.readbyqxmd.com/read/28320758/tumor-cell-free-dna-copy-number-instability-predicts-therapeutic-response-to-immunotherapy
#11
Glen J Weiss, Julia Beck, Donald P Braun, Kristen Bornemann-Kolatzki, Heather Barilla, Rhiannon Cubello, Walter Quan, Ashish Sangal, Vivek Khemka, Jordan Waypa, William M Mitchell, Howard Urnovitz, Ekkehard Schütz
PURPOSE: Chromosomal instability is a fundamental property of cancer, which can be quantified by Next Generation Sequencing (NGS) from plasma/serum derived cell-free DNA (cfDNA). We hypothesized that cfDNA could be used as a real time surrogate for imaging analysis of disease status as a function of response to immunotherapy and as a more reliable tool than tumor biomarkers. EXPERIMENTAL DESIGN: Plasma cfDNA sequences from 56 patients with diverse advanced cancers, were prospectively collected and analyzed in a single-blinded study for copy number variations, expressed as a quantitative chromosomal number instability (CNI) score versus 126 non-cancer controls in a training set of 23 and a blinded validation set of 33...
March 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28319586/short-term-exercise-training-alters-leukocyte-chemokine-receptors-in-obese-adults
#12
Julianne C Barry, Svetlana Simtchouk, Cody Durrer, Mary E Jung, Jonathan P Little
Obesity is characterized by chronic low-grade inflammation driven by activation and tissue infiltration of circulating leukocytes. Although exercise has anti-inflammatory effects, the impact of exercise on mediators of leukocyte migration is unclear. PURPOSE: To determine the impact of high intensity interval training (HIIT) versus moderate intensity continuous training (MICT), in the absence of weight/fat loss, on circulating chemokines and leukocyte chemokine receptors. METHODS: Thirty-seven inactive obese adults were randomized to two weeks (10 sessions) of HIIT or MICT with fasting blood samples collected before and after training...
March 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28317895/upregulation-of-skeletal-muscle-pgc-1%C3%AE-through-the-elevation-of-cyclic-amp-levels-by-cyanidin-3-glucoside-enhances-exercise-performance
#13
Toshiya Matsukawa, Hideko Motojima, Yuki Sato, Shinya Takahashi, Myra O Villareal, Hiroko Isoda
Regular exercise and physical training enhance physiological capacity and improve metabolic diseases. Skeletal muscles require peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the process of their adaptation to exercise owing to PGC-1α's ability to regulate mitochondrial biogenesis, angiogenesis, and oxidative metabolism. Cyanidin-3-glucoside (Cy3G) is a natural polyphenol and a nutraceutical factor, which has several beneficial effects on human health. Here, the effect of Cy3G on exercise performance and the underlying mechanisms involved were investigated...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317396/3d-qsar-studies-pharmacophore-modeling-and-virtual-screening-of-diarylpyrazole-benzenesulfonamide-derivatives-as-a-template-to-obtain-new-inhibitors-using-human-carbonic-anhydrase-ii-as-a-model-protein
#14
Yeganeh Entezari Heravi, Hassan Sereshti, Ali Akbar Saboury, Jahan Ghasemi, Marzieh Amirmostofian, Claudiu T Supuran
A 3D-QSAR modeling was performed on a series of diarylpyrazole-benzenesulfonamide derivatives acting as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). The compounds were collected from two datasets with the same scaffold, and utilized as a template for a new pharmacophore model to screen the ZINC database of commercially available derivatives. The datasets were divided into training, test, and validation sets. As the first step, comparative molecular field analysis (CoMFA), CoMFA region focusing and comparative molecular similarity indices analysis (CoMSIA) in parallel with docking studies were applied to a set of 41 human (h) CA II inhibitors...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28316011/changes-in-pro-inflammatory-markers-and-leucine-concentrations-in-response-to-nordic-walking-training-combined-with-vitamin-d-supplementation-in-elderly-women
#15
A Gmiat, J Mieszkowski, K Prusik, K Prusik, J Kortas, A Kochanowicz, A Radulska, M Lipiński, M Tomczyk, J Jaworska, J Antosiewicz, E Ziemann
Mechanisms underpinning age-related decreases in muscle strength and muscle mass relate to chronic inflammation. Physical activity induces an anti-inflammatory effect, but it is modulated by additional factors. We hypothesized that vitamin D, which has also anti-inflammatory activity will modify adaptation to exercise and reduce inflammation in elderly women. Twenty-seven women aged 67 ± 8 years were included and divided into groups with baseline vitamin D concentration more than 20 ng mL(-1) (MVD) and less than 20 ng mL(-1) (LVD)...
March 18, 2017: Biogerontology
https://www.readbyqxmd.com/read/28303250/predicting-presynaptic-and-postsynaptic-neurotoxins-by-developing-feature-selection-technique
#16
Hua Tang, Yunchun Yang, Chunmei Zhang, Rong Chen, Po Huang, Chenggang Duan, Ping Zou
Presynaptic and postsynaptic neurotoxins are proteins which act at the presynaptic and postsynaptic membrane. Correctly predicting presynaptic and postsynaptic neurotoxins will provide important clues for drug-target discovery and drug design. In this study, we developed a theoretical method to discriminate presynaptic neurotoxins from postsynaptic neurotoxins. A strict and objective benchmark dataset was constructed to train and test our proposed model. The dipeptide composition was used to formulate neurotoxin samples...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28303243/high-density-lipoprotein-subfractions-and-cholesterol-efflux-capacity-are-not-affected-by-supervised-exercise-but-are-associated-with-baseline-interleukin-6-in-patients-with-peripheral-artery-disease
#17
Mazen S Albaghdadi, Zheng Wang, Ying Gao, R Kannan Mutharasan, John Wilkins
OBJECTIVE: To quantify the association between high-density lipoprotein (HDL) subfractions, efflux capacity, and inflammatory markers at baseline and the effect of supervised exercise on these HDL parameters in patients with peripheral artery disease (PAD). METHODS: The study to improve leg circulation (SILC) was a randomized trial of supervised treadmill exercise, leg resistance training, or control in individuals with PAD. In a post hoc cross-sectional analysis, we quantified the associations between baseline HDL subfraction concentrations (HDL2 and HDL3), HDL-C efflux capacity, and inflammatory markers [C-reactive protein (CRP) and interleukin-6 (IL-6)]...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28303003/effects-of-high-intensity-interval-training-and-moderate-intensity-continuous-training-on-glycaemic-control-and-skeletal-muscle-mitochondrial-function-in-db-db-mice
#18
Vivien Chavanelle, Nathalie Boisseau, Yolanda F Otero, Lydie Combaret, Dominique Dardevet, Christophe Montaurier, Geoffrey Delcros, Sébastien L Peltier, Pascal Sirvent
Physical activity is known as an effective strategy for prevention and treatment of Type 2 Diabetes. The aim of this work was to compare the effects of a traditional Moderate Intensity Continuous Training (MICT) with a High Intensity Interval Training (HIIT) on glucose metabolism and mitochondrial function in diabetic mice. Diabetic db/db male mice (N = 25) aged 6 weeks were subdivided into MICT, HIIT or control (CON) group. Animals in the training groups ran on a treadmill 5 days/week during 10 weeks...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302517/exercise-training-rescues-high-fat-diet-induced-neuronal-nitric-oxide-synthase-expression-in-the-hippocampus-and-cerebral-cortex-of-mice
#19
Yuki Tomiga, Saki Yoshimura, Ai Ito, Shihoko Nakashima, Kentaro Kawanaka, Yoshinari Uehara, Hiroaki Tanaka, Yasuki Higaki
Consumption of a high fat diet (HFD) and being overweight both induce functional deterioration and atrophy of the hippocampus. These alterations are associated with mental disorders such as depression and anxiety. Exercise combats obesity and enhances brain health. There is substantial evidence that neuronal nitric oxide synthase (nNOS) is a key regulator of affective behavior, and that increased brain nNOS leads to anxiety while environmental enrichment (EE), which reduces brain nNOS, has anxiolytic effects...
March 13, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28299584/combined-molecular-docking-and-qsar-study-of-fused-heterocyclic-herbicide-inhibitors-of-d1-protein-in-photosystem-ii-of-plants
#20
Simona Funar-Timofei, Ana Borota, Luminita Crisan
Cinnoline, pyridine, pyrimidine, and triazine herbicides were found be inhibitors of the D1 protein in photosystem II (D1 PSII) electron transport of plants. The photosystem II inhibitory activity of these herbicides, expressed by experimental [Formula: see text] values, was modeled by a docking and quantitative structure-activity relationships study. A conformer ensemble for each of the herbicide structure was generated using the MMFF94s force field. These conformers were further employed in a docking approach, which provided new information about the rational "active conformations" and various interaction patterns of the herbicide derivatives with D1 PSII...
March 16, 2017: Molecular Diversity
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