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https://www.readbyqxmd.com/read/29474956/the-clock-gene-period-differentially-regulates-sleep-and-memory-in-drosophila
#1
Robin Fropf, Hong Zhou, Jerry C P Yin
Circadian regulation is a conserved phenomenon across the animal kingdom, and its disruption can have severe behavioral and physiological consequences. Core circadian clock proteins are likewise well conserved from Drosophila to humans. While the molecular clock interactions that regulate circadian rhythms have been extensively described, additional roles for clock genes during complex behaviors are less understood. Here, we show that mutations in the clock gene period result in differential time-of-day effects on acquisition and long-term memory of aversive olfactory conditioning...
February 20, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29474750/suppressed-heat-shock-protein-response-in-the-kidney-of-exercise-trained-diabetic-rats
#2
J Lappalainen, N K J Oksala, D E Laaksonen, S Khanna, T Kokkola, K Kaarniranta, C K Sen, M Atalay
Impaired expression of heat shock proteins (HSPs) and increased oxidative stress may contribute to the pathophysiology of diabetes by disrupted tissue protection. Acute exercise induces oxidative stress, whereas exercise training up-regulates endogenous antioxidant defenses and HSP expression. Although diabetic nephropathy is a major contributor to diabetic morbidity, information regarding the effect of HSPs on kidney protection is limited. The present study evaluated the effects of 8-week exercise training on kidney HSP expression and markers of oxidative stress at rest and after acute exercise in rats with or without streptozotocin-induced diabetes...
February 23, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29473893/restoration-of-muscle-glycogen-and-functional-capacity-role-of-post-exercise-carbohydrate-and-protein-co-ingestion
#3
Abdullah F Alghannam, Javier T Gonzalez, James A Betts
The importance of post-exercise recovery nutrition has been well described in recent years, leading to its incorporation as an integral part of training regimes in both athletes and active individuals. Muscle glycogen depletion during an initial prolonged exercise bout is a main factor in the onset of fatigue and so the replenishment of glycogen stores may be important for recovery of functional capacity. Nevertheless, nutritional considerations for optimal short-term (3-6 h) recovery remain incompletely elucidated, particularly surrounding the precise amount of specific types of nutrients required...
February 23, 2018: Nutrients
https://www.readbyqxmd.com/read/29471132/high-intensity-body-weight-training-is-comparable-to-combined-training-in-changes-in-muscle-mass-physical-performance-inflammatory-markers-and-metabolic-health-in-postmenopausal-women-at-high-risk-for-type-2-diabetes-mellitus-a-randomized-controlled-clinical
#4
Fernanda Maria Martins, Aletéia de Paula Souza, Paulo Ricardo Prado Nunes, Márcia Antoniazi Michelin, Eddie Fernando Candido Murta, Elisabete Aparecida Mantovani Rodrigues Resende, Erick Prado de Oliveira, Fábio Lera Orsatti
OBJECTIVE: This study compared the effects of 12 weeks of high-intensity interval body weight training (HIBWT) with combined training (COMT; aerobic and resistance exercises on body composition, a 6-minute walk test (6MWT; physical performance), insulin resistance (IR) and inflammatory markers in postmenopausal women (PW) at high risk of type 2 diabetes mellitus (TDM2). METHODS: In this randomized controlled clinical study, 16 PW at high risk of TDM2 were randomly allocated into two groups: HIBWT (n = 8) and COMT (n = 8)...
February 19, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29471131/aerobic-and-strength-training-induce-changes-in-oxidative-stress-parameters-and-elicit-modifications-of-various-cellular-components-in-skeletal-muscle-of-aged-rats
#5
Thais Ceresér Vilela, Pauline Souza Effting, Giulia Dos Santos Pedroso, Hemelin Farias, Lara Paganini, Helen Sorato Rebelo, Renata Tiescoski Nesi, Vanessa Moraes de Andrade, Ricardo Aurino de Pinho
Skeletal muscle aging is associated with loss of mass, function, and strength-a condition known as sarcopenia. It has been reported that sarcopenia can be attenuated by physical exercise. Therefore, we investigated whether 2 different physical exercise protocols could modulate and induce changes in oxidative and inflammatory parameters, as well as in BDNF and DNA repair enzyme levels in skeletal muscle tissue of aged rats. Aging Wistar rats performed treadmill or strength training for 50 min 3 to 4 times a week for 8 weeks...
February 19, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29470824/turning-up-the-heat-an-evaluation-of-the-evidence-for-heating-to-promote-exercise-recovery-muscle-rehabilitation-and-adaptation
#6
REVIEW
Hamish McGorm, Llion A Roberts, Jeff S Coombes, Jonathan M Peake
Historically, heat has been used in various clinical and sports rehabilitation settings to treat soft tissue injuries. More recently, interest has emerged in using heat to pre-condition muscle against injury. The aim of this narrative review was to collate information on different types of heat therapy, explain the physiological rationale for heat therapy, and to summarise and evaluate the effects of heat therapy before, during and after muscle injury, immobilisation and strength training. Studies on skeletal muscle cells demonstrate that heat attenuates cellular damage and protein degradation (following in vitro challenges/insults to the cells)...
February 22, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29468933/endocrinology-and-pediatric-exercise-science-the-year-that-was-2017
#7
Alon Eliakim
The Pediatric Exercise Science "Year That Was" section aims to highlight the most important (to the author's opinion) manuscripts that were published in 2017 in the field of endocrinology and pediatric exercise science. This year's selection includes studies showing that 1) in pubertal swimmers, there is a decrease in insulin-like growth factor-1 (IGF-I) and IGF-binding protein-3 (IGFBP-3) during intense training (a catabolic-type hormonal response) with an anabolic "rebound" characterized by a significant increase of these growth factors during training tapering down...
February 22, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29468073/survival-prediction-in-mesothelioma-using-a-scalable-lasso-regression-model-instructions-for-use-and-initial-performance-using-clinical-predictors
#8
Andrew C Kidd, Michael McGettrick, Selina Tsim, Daniel L Halligan, Max Bylesjo, Kevin G Blyth
Introduction: Accurate prognostication is difficult in malignant pleural mesothelioma (MPM). We developed a set of robust computational models to quantify the prognostic value of routinely available clinical data, which form the basis of published MPM prognostic models. Methods: Data regarding 269 patients with MPM were allocated to balanced training (n=169) and validation sets (n=100). Prognostic signatures (minimal length best performing multivariate trained models) were generated by least absolute shrinkage and selection operator regression for overall survival (OS), OS <6 months and OS <12 months...
2018: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/29467011/genes-sharing-the-protein-family-domain-decrease-the-performance-of-classification-with-rna-seq-genomic-signatures
#9
Anna Leśniewska, Joanna Zyprych-Walczak, Alicja Szabelska-Beręsewicz, Michal J Okoniewski
BACKGROUND: The experience with running various types of classification on the CAMDA neuroblastoma dataset have led us to the conclusion that the results are not always obvious and may differ depending on type of analysis and selection of genes used for classification. This paper aims in pointing out several factors that may influence the downstream machine learning analysis. In particular those factors are: type of the primary analysis, type of the classifier and increased correlation between the genes sharing a protein domain...
February 21, 2018: Biology Direct
https://www.readbyqxmd.com/read/29466686/divergent-effects-of-cold-water-immersion-versus-active-recovery-on-skeletal-muscle-fiber-type-and-angiogenesis-in-young-men
#10
Randall F D'Souza, Nina Zeng, James F Markworth, Vandre Casagrande Figueiredo, Llion Arwyn Roberts, Truls Raastad, Jeff S Coombes, Jonathan M Peake, David Cameron-Smith, Cameron J Mitchell
Resistance training (RT) increases muscle fiber size and induces angiogenesis to maintain capillary density. Cold water immersion (CWI), a common post-exercise recovery modality may improve acute recovery, but it attenuates muscle hypertrophy compared with active recovery (ACT). It is unknown if CWI following RT alters muscle fiber type expression or angiogenesis. Twenty-one men strength trained for 12 weeks, with either 10 min of CWI (n=11) or ACT (n=10) performed following each session. Vastus lateralis biopsies were collected at rest before and after training...
February 21, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29463285/network-modules-uncover-mechanisms-of-skeletal-muscle-dysfunction-in-copd-patients
#11
Ákos Tényi, Isaac Cano, Francesco Marabita, Narsis Kiani, Susana G Kalko, Esther Barreiro, Pedro de Atauri, Marta Cascante, David Gomez-Cabrero, Josep Roca
BACKGROUND: Chronic obstructive pulmonary disease (COPD) patients often show skeletal muscle dysfunction that has a prominent negative impact on prognosis. The study aims to further explore underlying mechanisms of skeletal muscle dysfunction as a characteristic systemic effect of COPD, potentially modifiable with preventive interventions (i.e. muscle training). The research analyzes network module associated pathways and evaluates the findings using independent measurements. METHODS: We characterized the transcriptionally active network modules of interacting proteins in the vastus lateralis of COPD patients (n = 15, FEV1 46 ± 12% pred, age 68 ± 7 years) and healthy sedentary controls (n = 12, age 65 ± 9  years), at rest and after an 8-week endurance training program...
February 20, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29463009/docosahexaenoic-acid-helps-to-lessen-extinction-memory-in-rats
#12
Michio Hashimoto, Shahdat Hossain, Masanori Katakura, Abdullah Al Mamun, Osamu Shido
Abstract : Memory extinction is referred to as a learning process in which a conditioned response (CR) progressively reduces over time as an animal learns to uncouple a response from a stimulus. Extinction occurs when the rat is placed into a context without shock after training. Docosahexaenoic acid (DHA, C22:6, n-3) is implicated in memory formation in mammalian brains. In a two-way active shuttle-avoidance apparatus, we examined whether DHA affects the extinction memory and the expression of brain cognition-related proteins, including gastrin-releasing peptide receptor (GRPR), brain-derived neurotrophic factor receptor (BDNFR) tyrosine kinase receptor B (TrKB), and N-methyl-d-aspartate receptor (NMDAR) subunits NR2A and NR2B...
February 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29462923/the-effect-of-whey-protein-supplementation-on-the-temporal-recovery-of-muscle-function-following-resistance-training-a-systematic-review-and-meta-analysis
#13
REVIEW
Robert W Davies, Brian P Carson, Philip M Jakeman
Whey protein (WP) is a widely consumed nutritional supplement, known to enhance strength and muscle mass during resistance training (RT) regimens. Muscle protein anabolism is acutely elevated following RT, which is further enhanced by WP. As a result, there is reason to suggest that WP supplementation may be an effective nutritional strategy for restoring the acute loss of contractile function that occurs following strenuous RT. This systematic review and meta-analysis provides a synthesis of the literature to date, investigating the effect of WP supplementation on the recovery of contractile function in young, healthy adults...
February 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29461477/anti-renal-fibrotic-effect-of-exercise-training-in-hypertension
#14
Ching Huang, Yi-Yuan Lin, Ai-Lun Yang, Tang-Wei Kuo, Chia-Hua Kuo, Shin-Da Lee
The purpose of this study was to evaluate the effects of exercise training on renal fibrosis in hypertensive rats. Masson's trichrome staining and Western blotting were performed on the excised renal cortex from sixteen male spontaneously hypertensive rats (SHR), which were randomly divided into either a sedentary hypertensive group (SHR) or exercise hypertensive group (SHR-EX, running on an exercise treadmill for 60 min/day, 5 sessions/week, for 12 weeks), and from eight male Wistar-Kyoto rats which served as a sedentary normotensive group (WKY)...
February 20, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29459095/the-pharmacist-s-role-in-supporting-people-living-with-cystic-fibrosis
#15
Olufunmilola Abraham, Jenny S Li, Kathy E Monangai, Alison M Feathers, Daniel Weiner
OBJECTIVES: To describe the critical need for pharmacists' involvement in outpatient care for people living with cystic fibrosis (CF). DATA SOURCES: Not applicable. SUMMARY: CF is a pulmonary condition that affects more than 30,000 children and adults in the United States and 70,000 people worldwide. Various complex medication regimens are given to patients with CF, some depending on the type of mutation they have in their CF transmembrane conductance regulator protein...
February 16, 2018: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/29457371/validation-of-a-blood-marker-for-plasma-volume-in-endurance-athletes-during-a-live-high-train-low-altitude-training-camp
#16
Louisa M Lobigs, Laura A Garvican-Lewis, Victor L Vuong, Nicolin Tee, Christopher J Gore, Peter Peeling, Brian Dawson, Yorck O Schumacher
Altitude is a confounding factor within the Athlete's Biological Passport (ABP) due, in part, to the plasma volume (PV) response to hypoxia. Here, a newly developed PV blood test is applied to assess the possible efficacy of reducing the influence of PV on the volumetric ABP markers; hemoglobin concentration ([Hb]) and the OFF-score. Endurance athletes (n=34) completed a 21 night simulated live high: train low protocol (14h.d-1 at 3000m). Bloods were collected twice pre-altitude, at days 3, 8 and 15 at altitude and 1, 7, 21 and 42 days post-altitude...
February 19, 2018: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29456546/genome-wide-association-studies-and-comparison-of-models-and-cross-validation-strategies-for-genomic-prediction-of-quality-traits-in-advanced-winter-wheat-breeding-lines
#17
Peter S Kristensen, Ahmed Jahoor, Jeppe R Andersen, Fabio Cericola, Jihad Orabi, Luc L Janss, Just Jensen
The aim of the this study was to identify SNP markers associated with five important wheat quality traits (grain protein content, Zeleny sedimentation, test weight, thousand-kernel weight, and falling number), and to investigate the predictive abilities of GBLUP and Bayesian Power Lasso models for genomic prediction of these traits. In total, 635 winter wheat lines from two breeding cycles in the Danish plant breeding company Nordic Seed A/S were phenotyped for the quality traits and genotyped for 10,802 SNPs...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29453741/fuel-for-the-work-required-a-theoretical-framework-for-carbohydrate-periodization-and-the-glycogen-threshold-hypothesis
#18
Samuel G Impey, Mark A Hearris, Kelly M Hammond, Jonathan D Bartlett, Julien Louis, Graeme L Close, James P Morton
Deliberately training with reduced carbohydrate (CHO) availability to enhance endurance-training-induced metabolic adaptations of skeletal muscle (i.e. the 'train low, compete high' paradigm) is a hot topic within sport nutrition. Train-low studies involve periodically training (e.g., 30-50% of training sessions) with reduced CHO availability, where train-low models include twice per day training, fasted training, post-exercise CHO restriction and 'sleep low, train low'. When compared with high CHO availability, data suggest that augmented cell signalling (73% of 11 studies), gene expression (75% of 12 studies) and training-induced increases in oxidative enzyme activity/protein content (78% of 9 studies) associated with 'train low' are especially apparent when training sessions are commenced within a specific range of muscle glycogen concentrations...
February 16, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29453330/interphysician-agreement-on-subclassification-of-myocardial-infarction
#19
Anton Gard, Bertil Lindahl, Gorav Batra, Nermin Hadziosmanovic, Marcus Hjort, Karolina Elisabeth Szummer, Tomasz Baron
OBJECTIVE: The universal definition of myocardial infarction (MI) differentiates MI due to oxygen supply/demand mismatch (type 2) from MI due to plaque rupture (type 1) as well as from myocardial injuries of non-ischaemic or multifactorial nature. The purpose of this study was to investigate how often physicians agree in this classification and what factors lead to agreement or disagreement. METHODS: A total of 1328 patients diagnosed with MI at eight different Swedish hospitals 2011 were included...
February 16, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29451419/physical-exercise-nutrition-and-hormones-three-pillars-to-fight-sarcopenia
#20
Paolo Sgrò, Massimiliano Sansone, Andrea Sansone, Stefania Sabatini, Paolo Borrione, Francesco Romanelli, Luigi Di Luigi
BACKGROUND: Sarcopenia is a pathophysiological condition diffused in elderly people; it represents a social issue due to the longer life expectancy and the growing aging population. It affects negatively quality of life and it represents a risk factor for other pathologies, such as diabetes, cardiovascular disease, and obesity. No silver bullet exists to hinder sarcopenia, but it may be counteracted by physical exercise, nutrition, and a proper endocrine milieu. Indeed, we aim to analyze the scientific literature to give to clinician effective advices to counteract sarcopenia...
February 16, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
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