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exercise biochemistry

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https://www.readbyqxmd.com/read/28630704/the-effects-of-a-post-exercise-carbohydrate-and-protein-supplement-on-repeat-performance-serum-chemistry-insulin-and-glucagon-in-competitive-weight-pulling-dogs
#1
Christopher W Frye, Gretchen M VanDeventer, Gina K Dinallo, Jennifer A Poplarski, Sabine Mann, Ella Pittman, Brian M Zanghi, Joseph J Wakshlag
The physiological demands of weight-pulling dogs have yet to be investigated. Two groups of competitive weight-pulling dogs both underwent two identical pull series 3 h apart. The control group (n 8) was compared with a group fed a rapidly digestible carbohydrate and protein supplement after the first pull series (n 9). Blood was drawn before and after each pull series as well as at 15 and 30 min after the first pull series finished. Biochemistry values remained unremarkable throughout the study in both groups regardless of supplementation or exercise over time...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/28627731/cell-migration-analysis-a-low-cost-laboratory-experiment-for-cell-and-developmental-biology-courses-using-keratocytes-from-fish-scales
#2
Daniel Prieto, Gonzalo Aparicio, Jose R Sotelo-Silveira
Cell and developmental processes are complex, and profoundly dependent on spatial relationships that change over time. Innovative educational or teaching strategies are always needed to foster deep comprehension of these processes and their dynamic features. However, laboratory exercises in cell and developmental biology at the undergraduate level do not often take into account the time dimension. In this article, we provide a laboratory exercise focused in cell migration, aiming to stimulate thinking in time and space dimensions through a simplification of more complex processes occurring in cell or developmental biology...
June 19, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28602674/serum-metabolomic-response-to-exercise-training-in-spontaneously-hypertensive-rats
#3
Xiangyang Liu, Yanjun Wang, Rui Gao, Ying Xing, Xiaomiao Li, Zhengjun Wang
Chronic aerobic exercise training exhibits blood pressure protective effects, but the mechanism in metabolic level remains largely unclear. This study aims to investigate the effect of exercise training from serum metabolic profiles on the development of hypertension in spontaneously hypertensive rats (SHRs). Exercise training was performed, and the serum metabolites were measured by integrating gas chromatography-mass spectrometer and correlation-based network analysis. After a period of 6 weeks of chronic aerobic exercise training, systolic blood pressure was significant lower in the exercise training group (SHR + EX) rats than the control group (SHR)...
May 20, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28581156/the-usability-of-wechat-as-a-mobile-and-interactive-medium-in-student-centered-medical-teaching
#4
Juan Wang, Furong Gao, Jiao Li, Jieping Zhang, Siguang Li, Guo-Tong Xu, Lei Xu, Jianjun Chen, Lixia Lu
Biochemistry and cellular biology courses for medical students at Tongji University include the assessment that provides students with feedback to enhance their learning, which is a type of formative assessment. However, frequent instant feedback and guidance for students is often absent or inconsistently included in the teaching process. WeChat, the most popular Chinese social media, was introduced in biochemistry and cellular biology course. A WeChat official account (OA) was set up as an instant interactive platform...
June 5, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28578654/progressive-resistance-training-in-head-and-neck-cancer-patients-during-concomitant-chemoradiotherapy-design-of-the-dahanca-31-randomized-trial
#5
Camilla K Lonkvist, Simon Lønbro, Anders Vinther, Bo Zerahn, Eva Rosenbom, Hanne Primdahl, Pernille Hojman, Julie Gehl
BACKGROUND: Head and neck cancer patients undergoing concomitant chemoradiotherapy (CCRT) frequently experience loss of muscle mass and reduced functional performance. Positive effects of exercise training are reported for many cancer types but biological mechanisms need further elucidation. This randomized study investigates whether progressive resistance training (PRT) may attenuate loss of muscle mass and functional performance. Furthermore, biochemical markers and muscle biopsies will be investigated trying to link biological mechanisms to training effects...
June 3, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28509370/use-of-mushroom-tyrosinase-to-introduce-michaelis-menten-enzyme-kinetics-to-biochemistry-students
#6
William H Flurkey, Jennifer K Inlow
An inexpensive enzyme kinetics laboratory exercise for undergraduate biochemistry students is described utilizing tyrosinase from white button mushrooms. The exercise can be completed in one or two three-hour lab sessions. The optimal amounts of enzyme, substrate (catechol), and inhibitor (kojic acid) are first determined, and then kinetic data is collected in the absence and presence of the inhibitor. A Microsoft Excel template is used to plot the data and to fit the Michaelis-Menten equation to the data to determine the kinetic parameters Vmax and Km ...
May 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28503702/postmortem-diagnosis-of-hyponatremia-case-report-and-literature-review
#7
REVIEW
Jessica Vanhaebost, Cristian Palmiere, Maria Pia Scarpelli, Fabiola Bou Abdallah, Arnaud Capron, Gregory Schmit
Hyponatremia is defined as a plasma sodium concentration less than 135 or 130 mEq/L (or mmol/L) and may be responsible for life threatening symptoms that can be observed in a variety of medical conditions. Cases of fatal hyponatremia have been reported in both clinical and forensic literature in situations of water intoxication due to psychogenic polydipsia, amphetamine derivative drug intake, high-endurance exercise, iatrogenic causes, and exceptional cases of child abuse by forced water intoxication. Vitreous sodium levels have been determined to be relatively stable during the early postmortem period and similar to levels found in normal serum of living subjects...
May 13, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28489182/acute-effects-of-intradialytic-aerobic-exercise-on-solute-removal-blood-gases-and-oxidative-stress-in-patients-with-chronic-kidney-disease
#8
Joseane Böhm, Mariane Borba Monteiro, Francini Porcher Andrade, Francisco Veronese, Fernando Saldanha Thomé
Introduction: Hemodialysis contributes to increased oxidative stress and induces transitory hypoxemia. Compartmentalization decreases the supply of solutes to the dialyzer during treatment. The aim of this study was to investigate the acute effects of intradialytic aerobic exercise on solute removal, blood gases and oxidative stress in patients with chronic kidney disease during a single hemodialysis session. Methods: Thirty patients were randomized to perform aerobic exercise with cycle ergometer for lower limbs during 30 minutes with intensity between 60-70% of maximal heart rate, or control group (CG)...
April 27, 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/28470800/oral-versus-intravenous-hypertonic-saline-for-exercise-associated-hyponatraemia
#9
Israel Berger
Exercise-associated hyponatraemia is a potentially serious acute condition that may present early as asymptomatic or mildly symptomatic. Standard treatment is intravenous hypertonic saline, which can be challenging and carries some risk. An alternative may be oral therapy. We undertook a review of existing literature to assess whether paediatric populations should receive oral or intravenous hypertonic saline solutions. One study addressed our question but was aimed at a presumably adult population of runners...
May 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28394739/exercise-but-not-metformin-improves-health-related-quality-of-life-and-mood-states-in-older-adults-with-type-2-diabetes
#10
Liliana C Baptista, Aristides M Machado-Rodrigues, Raul A Martins
The aim of this cohort study is to analyse the effect of three types of treatment: (i) exercise training with multicomponent exercise (E); (ii) pharmacologic treatment with oral hypoglycaemic drug - metformin (M); and (iii) a combined therapy - exercise and metformin (E + M) on health-related quality of life (HRQoL) and mood states in older adults with type 2 diabetes (T2D) with comorbidity in an early stage of the disease. Participants (n = 284) underwent 1 of the following 3 conditions: (i) E (n = 59) trained three times/week; (ii) M (n = 30) used 850 mg of metformin twice daily; and (iii) E + M (n = 195) combined exercise and metformin...
July 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28392735/evaluating-performance-in-sweat-testing-in-medical-biochemistry-laboratories-in-croatia
#11
Merica Aralica, Jasna Lenicek Krleza
INTRODUCTION: Sweat test has a diagnostic role in evaluation of cystic fibrosis. Its performance includes sweat stimulation, collection and analysis. All listed may be sources of inconsistencies in everyday practice. The aim of this study was an evaluation of external quality assessment (EQA) of sweat chloride measurement including sweat test performance in medical biochemistry laboratories in Croatia. MATERIALS AND METHODS: EQA for sweat chloride measurement was provided by Croatian Centre for Quality Assessment in Laboratory Medicine (CROQALM) in five consecutive exercises to medical biochemistry laboratories (MBL) that offered sweat testing...
February 15, 2017: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/28392730/external-quality-assessment-in-croatia-problems-challenges-and-specific-circumstances
#12
REVIEW
Jasna Lenicek Krleza, Ivana Celap, Jelena Vlasic Tanaskovic
In Croatian medical laboratories (ML), external quality assessment (EQA) has a long tradition of almost half of a century. At national level, EQA is provided by Croatian Centre for Quality Assessment in Laboratory Medicine (CROQALM) which is a part of Croatian Society of Medical Biochemistry and Laboratory Medicine.
This case study aimed to summarize the main challenges, which are set to CROQALM and their possible solutions.
CROQALM has 10 schemes, covering majority of analysis for which medical biochemistry laboratories in Croatia are authorized for, including pre-analytical and post-analytical phase of laboratory work...
February 15, 2017: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/28371751/exercise-redox-biochemistry-conceptual-methodological-and-technical-recommendations
#13
James N Cobley, Graeme L Close, Damian M Bailey, Gareth W Davison
Exercise redox biochemistry is of considerable interest owing to its translational value in health and disease. However, unaddressed conceptual, methodological and technical issues complicate attempts to unravel how exercise alters redox homeostasis in health and disease. Conceptual issues relate to misunderstandings that arise when the chemical heterogeneity of redox biology is disregarded: which often complicates attempts to use redox-active compounds and assess redox signalling. Further, that oxidised macromolecule adduct levels reflect formation and repair is seldom considered...
August 2017: Redox Biology
https://www.readbyqxmd.com/read/28145107/a-comprehensive-experiment-for-molecular-biology-determination-of-single-nucleotide-polymorphism-in-human-rev3-gene-using-pcr-rflp
#14
Xu Zhang, Meng Shao, Lu Gao, Yuanyuan Zhao, Zixuan Sun, Liping Zhou, Yongmin Yan, Qixiang Shao, Wenrong Xu, Hui Qian
Laboratory exercise is helpful for medical students to understand the basic principles of molecular biology and to learn about the practical applications of molecular biology. We have designed a lab course on molecular biology about the determination of single nucleotide polymorphism (SNP) in human REV3 gene, the product of which is a subunit of DNA polymerase ζ and SNPs in this gene are associated with altered susceptibility to cancer. This newly designed experiment is composed of three parts, including genomic DNA extraction, gene amplification by PCR, and genotyping by RFLP...
February 1, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28107066/hematologic-plasma-biochemical-and-lipid-panel-reference-intervals-in-orange-winged-amazon-parrots-amazona-amazonica
#15
Claire Vergneau-Grosset, Tamsen Polley, Danielle Carrade Holt, William Vernau, Joanne Paul-Murphy
To establish reference intervals in orange-winged Amazon parrots ( Amazona amazonica ) for the complete blood count, plasma biochemical values, and lipid panel and to evaluate age- and sex-related variations, blood samples were obtained from 29 healthy juvenile and adult parrots. Concentrations of total protein, bile acids, phosphorus, total cholesterol, low-density-lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol were significantly higher in adult compared with juvenile birds, while uric acid concentration was significantly higher in juveniles...
December 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28032403/a-unique-large-scale-undergraduate-research-experience-in-molecular-systems-biology-for-non-mathematics-majors
#16
Ulrike Kappler, Susan L Rowland, Rhianna K Pedwell
Systems biology is frequently taught with an emphasis on mathematical modeling approaches. This focus effectively excludes most biology, biochemistry, and molecular biology students, who are not mathematics majors. The mathematical focus can also present a misleading picture of systems biology, which is a multi-disciplinary pursuit requiring collaboration between biochemists, bioinformaticians, and mathematicians. This article describes an authentic large-scale undergraduate research experience (ALURE) in systems biology that incorporates proteomics, bacterial genomics, and bioinformatics in the one exercise...
May 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28032379/changes-in-cardiovascular-performance-biochemistry-gastric-motility-and-muscle-temperature-induced-by-acute-exercise-on-a-treadmill-in-healthy-military-dogs
#17
R W Queiroz, V L Silva, D R Rocha, D S Costa, S H N Turco, M T B Silva, A A Santos, M B L Oliveira, A S R Pereira, R C Palheta-Junior
Changes in physiological parameters that are induced by acute exercise on a treadmill in healthy military dogs have not been thoroughly investigated, especially with regard to age. This study investigated the effects of acute exercise on a treadmill on cardiovascular function, biochemical parameters and gastric antral motility in military dogs. Thermography was used to assess variations in superficial hindlimb muscle temperature. Nine healthy dogs were distributed into three groups according to their age (Group I: 25 ± 7 months; Group II: 51 ± 12 months; Group III: 95 ± 10 months) and sequentially subjected to running exercise on a treadmill for 12 min (3...
December 29, 2016: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28007443/translational-misreading-amino-acid-misincorporation-and-misinterpretations-the-case-of-the-flavocytochrome-b2-h373q-variant
#18
Mouna Ben Elhoul, Paul Machillot, Mireille Benoît, Florence Lederer
Amino acid misincorporation during protein synthesis occurs naturally at a low level. Protein sequence errors, depending on the level and the nature of the misincorporation, can have various consequences. When site-directed mutagenesis is used as a tool for understanding the role of a side chain in enzyme catalysis, misincorporation in a variant with intrinsically low activity may lead to misinterpretations concerning the enzyme mechanism. We report here one more example of such a problem, dealing with flavocytochrome b2 (Fcb2), a lactate dehydrogenase, member of a family of FMN-dependent L-2-hydroxy acid oxidizing enzymes...
March 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27921457/impact-of-exercise-on-fecal-and-cecal-metabolome-over-aging-a-longitudinal-study-in-rats
#19
Olga Deda, Helen Gika, Theodoros Panagoulis, Ioannis Taitzoglou, Nikolaos Raikos, Georgios Theodoridis
AIM: Physical exercise can reduce adverse conditions during aging, while both exercise and aging act as metabolism modifiers. The present study investigates rat fecal and cecal metabolome alterations derived from exercise during rats' lifespan. METHODS & RESULTS: Groups of rats trained life-long or for a specific period of time were under study. The training protocol consisted of swimming, 15-18 min per day, 3-5 days per week, with load of 4-0% of rat's weight. Fecal samples and cecal extracts were analyzed by targeted and untargeted metabolic profiling methods (GC-MS and LC-MS/MS)...
January 2017: Bioanalysis
https://www.readbyqxmd.com/read/27871307/current-models-of-care-for-disorders-of-sex-development-results-from-an-international-survey-of-specialist-centres
#20
Andreas Kyriakou, Arianne Dessens, Jillian Bryce, Violeta Iotova, Anders Juul, Maciej Krawczynski, Agneta Nordenskjöld, Marta Rozas, Caroline Sanders, Olaf Hiort, S Faisal Ahmed
BACKGROUND: To explore the current models of practice in centres delivering specialist care for children with disorders of sex development (DSD), an international survey of 124 clinicians, identified through DSDnet and the I-DSD Registry, was performed in the last quarter of 2014. RESULTS: A total of 78 (63 %) clinicians, in 75 centres, from 38 countries responded to the survey. A formal national network for managing DSD was reported to exist in 12 (32 %) countries...
November 21, 2016: Orphanet Journal of Rare Diseases
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