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GENES AND SPORTS

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https://www.readbyqxmd.com/read/29453741/fuel-for-the-work-required-a-theoretical-framework-for-carbohydrate-periodization-and-the-glycogen-threshold-hypothesis
#1
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/29401200/actn3-genotype-in-professional-sport-climbers
#2
Michał Ginszt, Małgorzata Michalak-Wojnowska, Piotr Gawda, Magdalena Wojcierowska-Litwin, Iwona Korszeń-Pilecka, Małgorzata Kusztelak, Rafał Muda, Agata A Filip, Piotr Majcher
The functional RR genotype of the alpha-actinin-3 (ACTN3) gene has been reported to be associated with elite sprint/power athlete status. Although large and rapidly increasing number of studies have investigated the associations between the ACTN3 genotypes and athletic performance in various sport disciplines, there is a lack of studies on the genetic predisposition in Sport Climbing, which was selected to be part of the next Summer Olympic Games in Tokyo 2020 with three subdisciplines ('Lead Climbing', 'Speed Climbing' and 'Bouldering')...
February 1, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29345072/genetic-monitoring-of-horses-in-the-czech-republic-a-large-scale-study-with-a-focus-on-the-czech-autochthonous-breeds
#3
L Putnová, R Štohl, I Vrtková
We propose the first comprehensive in-depth study monitoring horses in the Czech Republic. We scanned 9,289 animals from 44 populations for 17 equine STRs. Other equids analysed involved Equus przewalskii and Equus asinus. The total of 228 different alleles were detected, with the mean number of 13.4 per locus. The highest allelic richness (AR) was found in the Welsh Part Bred (6.01), followed by the Camargue (5.93) and Czech Sport Pony (5.91), whereas the Friesian exhibited the lowest AR (3.06). Interpopulation differences explained approximately nine per cent of the total genetic diversity...
February 2018: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/29291385/serological-detection-and-molecular-characterization-of-piroplasmids-in-equids-in-brazil
#4
Maria Isabel Botelho Vieira, Márcio Machado Costa, Mateus Tonial de Oliveira, Luiz Ricardo Gonçalves, Marcos Rogério André, Rosangela Zacarias Machado
Equine piroplasmosis is a disease caused by the hemoparasites Babesia caballi and Theileria equi and is considered to be the most important parasitic infection affecting Equidae. The objective of the present study was to carry out an epidemiological molecular and serological survey for the presence of these two protozoal organisms in equids from the northwestern region of the State of Rio Grande do Sul (RS), south Brazil. For this purpose, blood samples were collected from 90 equids in the city of Passo Fundo, RS, Brazil...
March 2018: Acta Tropica
https://www.readbyqxmd.com/read/29262476/-short-stature-optic-nerve-atrophy-and-pelger-hu%C3%A3-t-anomaly-syndrome-with-antibody-immunodeficiency-and-aplastic-anemia-a-case-report-and-literature-review
#5
T Y He, N Zhang, Y Xia, Y Luo, C R Li, J Yang
Objective: To investigate the clinical features and genetic characteristics of cases with NBAS gene defects. Method: Characteristics of clinical materials, immunological data and gene mutation of the first case in China with NBAS gene mutation were retrospectively analyzed. The related literature was searched by using search terms'NBAS'. Result: A 2-year-four-month old girl, was admitted due to 'fever and pallor for one day'. There was an intrauterine growth retardation at her fetal stage. Since her birth, she had suffered from recurrent infections and development delay was accompanied by persistent liver dysfunction...
December 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29186495/sugar-metabolism-reprogramming-in-a-non-climacteric-bud-mutant-of-a-climacteric-plum-fruit-during-development-on-the-tree
#6
Macarena Farcuh, Bosheng Li, Rosa M Rivero, Lyudmila Shlizerman, Avi Sadka, Eduardo Blumwald
We investigated sugar metabolism in leaves and fruits of two Japanese plum (Prunus salicina Lindl.) cultivars, the climacteric Santa Rosa and its bud sport mutant the non-climacteric Sweet Miriam, during development on the tree. We previously characterized differences between the two cultivars. Here, we identified key sugar metabolic pathways. Pearson coefficient correlations of metabolomics and transcriptomic data and weighted gene co-expression network analysis (WGCNA) of RNA sequencing (RNA-Seq) data allowed the identification of 11 key sugar metabolism-associated genes: sucrose synthase, sucrose phosphate synthase, cytosolic invertase, vacuolar invertase, invertase inhibitor, α-galactosidase, β-galactosidase, galactokinase, trehalase, galactinol synthase, and raffinose synthase...
November 25, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29172065/dna-methylation-markers-in-combination-with-skeletal-and-dental-ages-to-improve-age-estimation-in-children
#7
Lei Shi, Fan Jiang, Fengxiu Ouyang, Jun Zhang, Zhimin Wang, Xiaoming Shen
Age estimation is critical in forensic science, in competitive sports and games and in other age-related fields, but the current methods are suboptimal. The combination of age-associated DNA methylation markers with skeletal age (SA) and dental age (DA) may improve the accuracy and precision of age estimation, but no study has examined this topic. In the current study, we measured SA (GP, TW3-RUS, and TW3-Carpal methods) and DA (Demirjian and Willems methods) by X-ray examination in 124 Chinese children (78 boys and 46 girls) aged 6-15 years...
November 17, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29143596/genetic-testing-for-exercise-prescription-and-injury-prevention-ais-athlome-consortium-fims-joint-statement
#8
REVIEW
Nicole Vlahovich, David C Hughes, Lyn R Griffiths, Guan Wang, Yannis P Pitsiladis, Fabio Pigozzi, Nobert Bachl, Nir Eynon
BACKGROUND: There has been considerable growth in basic knowledge and understanding of how genes are influencing response to exercise training and predisposition to injuries and chronic diseases. On the basis of this knowledge, clinical genetic tests may in the future allow the personalisation and optimisation of physical activity, thus providing an avenue for increased efficiency of exercise prescription for health and disease. RESULTS: This review provides an overview of the current status of genetic testing for the purposes of exercise prescription and injury prevention...
November 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29143595/why-nature-prevails-over-nurture-in-the-making-of-the-elite-athlete
#9
Evelina Georgiades, Vassilis Klissouras, Jamie Baulch, Guan Wang, Yannis Pitsiladis
While the influence of nature (genes) and nurture (environment) on elite sporting performance remains difficult to precisely determine, the dismissal of either as a contributing factor to performance is unwarranted. It is accepted that a complex interaction of a combination of innumerable factors may mold a talented athlete into a champion. The prevailing view today is that understanding elite human performance will require the deciphering of two major sources of individual differences, genes and the environment...
November 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29116863/hypothermia-promotes-cell-protective-and-chondroprotective-effects-after-blunt-cartilage-trauma
#10
Jana Riegger, Madeleine Zimmermann, Helga Joos, Thomas Kappe, Rolf E Brenner
BACKGROUND: Cryotherapy is routinely administered after sports injuries of synovial joints. Although positive clinical effects on periarticular swelling and pain have been described, the effects on the cell biological activities of cartilage and synovial cells remain largely unknown so far. HYPOTHESIS: Local hypothermia alleviates synovial reactions and prevents chondrocyte death as well as cartilage destructive processes after blunt cartilage trauma. STUDY DESIGN: Controlled laboratory study...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29075233/genes-gender-hormones-and-doping-in-sport-a-convoluted-tale
#11
Alan D Rogol, Lindsay Parks Pieper
We are writing this piece in the aftermath of the 2016 Olympic Games in Rio de Janeiro, Brazil. Each of the words in the title plays a role(s) in deciding who may compete, especially who may compete as a woman. We shall be careful to disentangle the issues of genes and gender from hormonal levels of the potent androgen testosterone, and very clearly demarcate these natural occurrences from those of doping, for which the World Anti-Doping Agency has established strict guidelines. These elements became conflated in the aftermath of the Court of Arbitration of Sport's decision, now more than 2 years ago, concerning the teenage Indian sprinter, Dutee Chand...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29070484/epigenetics-regulates-gene-expression-patterns-of-skeletal-muscle-induced-by-physical-exercise
#12
Chen-Dong Liu, Lu Yang, Hong-Zhou Pu, Qiong Yang, Wen-Yao Huang, Xue Zhao, Li Zhu, Shun-Hua Zhang
As it is well known, proper exercise benefits our mind and body, especially the skeletal muscle. Exercise increases the capacity of muscle metabolism, enhances the biological function of mitochondria, regulates the transformation of muscle fiber types and increases the muscle power. In recent years, more and more researches show that epigenetic regulation plays an important role in strengthening the muscle, and these studies mainly include DNA methylation, histone modification, and regulation of miRNA expression...
October 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/29049925/omics-tools-new-challenges-in-aquatic-nanotoxicology
#13
REVIEW
Messika Revel, Amélie Châtel, Catherine Mouneyrac
In recent years, the implication of genomics into ecotoxicological studies has been studied closely to allow a better understanding of organism's responses to environmental contaminants including engineering nanomaterials (ENMs). ENMs are increasingly produced for various applications including cosmetics, electronics, sports equipment, biomedicine and agriculture. Because of their small size, ENMs possess chemical or physical characteristics improved compared to the corresponding macro-sized material. As their application expend, the release of manufactured ENMs into the environment is likely to increase and concern over impacts for the aquatic ecosystem is growing...
October 12, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29045058/loop-mediated-isothermal-amplification-lamp-as-an-alternative-to-pcr-a-rapid-on-site-detection-of-gene-doping
#14
Olivier Salamin, Tiia Kuuranne, Martial Saugy, Nicolas Leuenberger
Innovation in medical research has been diverted at multiple occasions to enhance human performance. The predicted great progress in gene therapy has raised some concerns regarding its misuse in the world of sports (gene doping) for several years now. Even though there is no evidence that gene doping has ever been used in sports, the continuous improvement of gene therapy techniques increases the likelihood of abuse. Therefore, since 2004, efforts have been invested by the anti-doping community and WADA for the development of detection methods...
October 17, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28957384/two-genetic-loci-associated-with-ankle-injury
#15
Stuart K Kim, John P Kleimeyer, Marwa A Ahmed, Andrew L Avins, Michael Fredericson, Jason L Dragoo, John P A Ioannidis
Ankle injuries, including sprains, strains and other joint derangements and instability, are common, especially for athletes involved in indoor court or jumping sports. Identifying genetic loci associated with these ankle injuries could shed light on their etiologies. A genome-wide association screen was performed using publicly available data from the Research Program in Genes, Environment and Health (RPGEH) including 1,694 cases of ankle injury and 97,646 controls. An indel (chr21:47156779:D) that lies close to a collagen gene, COL18A1, showed an association with ankle injury at genome-wide significance (p = 3...
2017: PloS One
https://www.readbyqxmd.com/read/28920062/into-the-eyes-of-bone-marrow-derived-mesenchymal-stem-cells-therapy-for-myocardial-infarction-and-other-diseases
#16
REVIEW
Jian-Rui Li, Ting-Ting Qu
Applications of bone marrow-derived mesenchymal stem cells (BM-MSCs) have been documented for diseases occur in the sports system, the central nervous system, the cardiovascular system etc. However, poor viability of donor stem cells after transplantation limits their therapeutic efficiency. Although the autophagy theory has been reported, the underlying mechanisms are still poorly understood. Isolation and culture methods of mesenchymal stem cells are currently concentrate on four ways. Overall, BM-MSCs have both important research significance and clinical application value in cell replacement therapy, gene therapy and reconstruction of tissues as well as organs especially for myocardial infarction (MI)...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28888475/promoter-methylation-status-of-the-timp2-and-adamts4-genes-and-patellar-tendinopathy
#17
Louis Y El Khoury, Rebecca Rickaby, Tom Samiric, Stuart M Raleigh
OBJECTIVES: Patellar tendinopathy (PT) is a debilitating and prevalent condition that tends to affect those who are physically active or engaged in jumping sports. Although tendinopathies are known to have a genetic basis, the role of DNA methylation as an epigenetic factor and risk determinant for human PT has never been described. We sought to determine whether differences existed between the methylation profiles of both the TIMP2 and ADAMTS4 gene promoter sequences in a cohort of males having undergone surgery for patellar tendinopathy compared to controls...
September 1, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28887210/can-half-marathon-affect-overall-health-the-yin-yang-of-sport
#18
Luca Dalle Carbonare, Marcello Manfredi, Giuseppe Caviglia, Eleonora Conte, Elisa Robotti, Emilio Marengo, Samuele Cheri, Francesco Zamboni, Daniele Gabbiani, Michela Deiana, Daniela Cecconi, Federico Schena, Monica Mottes, Maria Teresa Valenti
Physical activity improves overall health and counteracts metabolic pathologies. Adipose tissue and bone are important key targets of exercise; the prevalence of diseases associated with suboptimal physical activity levels has increased in recent times as a result of lifestyle changes. Mesenchymal stem cells (MSCs) differentiation in either osteogenic or adipogenic lineage is regulated by many factors. Particularly, the expression of master genes such as RUNX2 and PPARγ2 is essential for MSC commitment to osteogenic or adipogenic differentiation, respectively...
January 6, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/28871847/single-nucleotide-polymorphisms-in-carnosinase-genes-cndp1-and-cndp2-are-associated-with-power-athletic-status
#19
João Paulo Limongi França Guilherme, Antonio Herbert Lancha Junior
Carnosine (β-alanyl-L-histidine), abundantly found in skeletal muscle, plays an important role during exercise, especially for high-intensity contractions. Variability in muscle carnosine content between individuals exists and may also be explained by different genetic bases, although no study has addressed the association of polymorphisms in genes related to carnosine metabolism in athletes. This study aimed to investigate the frequency of single nucleotide polymorphisms (SNPs) in the carnosinase genes (CNDP1 and CNDP2) in a large Brazilian cohort of athletes and non-athletes...
September 5, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28860166/effects-of-anti-inflammatory-nsaid-treatment-on-human-tendinopathic-tissue
#20
Katja Maria Heinemeier, Tommy F Øhlenschlæger, Ulla Ramer Mikkelsen, Freja Sønder, Peter Schjerling, Rene B Svensson, Michael Kjaer
Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used to treat tendinopathy, but evidence for this treatment is lacking, and little is known regarding effects of NSAIDs on human tendinopathic tendon. This study investigated the effects of NSAID treatment (ibuprofen) on human tendinopathic tendon, with changes in gene expression as the primary outcome, and tendon pain, function, and blood flow as secondary outcomes. Twenty-six adults (16 men, 10 women), diagnosed with chronic Achilles tendinopathy, were randomized to 1-wk treatment with ibuprofen (600 mg ×3/day) (n = 13) or placebo (n = 13) (double-blinded)...
November 1, 2017: Journal of Applied Physiology
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