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https://www.readbyqxmd.com/read/27933574/-long-term-hrv-analysis-shows-stress-reduction-by-magnesium-intake
#1
Elmar Wienecke, Claudia Nolden
BACKGROUND: Mental pressure and stress represent an ever-increasing socio-political challenge. The heart rate variability (HRV) measurement, which has its origin in the cardiac function diagnosis, gives information on the neurovegetative activity. A low HRV shows an imbalance of the sympathetic and parasympathetic efferents and thus is an indicator of stress. METHOD: A randomized, controlled, two-armed parallel study with 100 participants and a period of 90 days was performed...
December 2016: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/27933296/modeling-diet-induced-obesity-with-obesity-prone-rats-implications-for-studies-in-females
#2
REVIEW
Erin D Giles, Matthew R Jackman, Paul S MacLean
Obesity is a worldwide epidemic, and the comorbidities associated with obesity are numerous. Over the last two decades, we and others have employed an outbred rat model to study the development and persistence of obesity, as well as the metabolic complications that accompany excess weight. In this review, we summarize the strengths and limitations of this model and how it has been applied to further our understanding of human physiology in the context of weight loss and weight regain. We also discuss how the approach has been adapted over time for studies in females and female-specific physiological conditions, such as menopause and breast cancer...
2016: Frontiers in Nutrition
https://www.readbyqxmd.com/read/27933166/sex-specific-ecophysiological-responses-to-environmental-fluctuations-of-free-ranging-hermann-s-tortoises-implication-for-conservation
#3
Adélaïde Sibeaux, Catherine Louise Michel, Xavier Bonnet, Sébastien Caron, Kévin Fournière, Stephane Gagno, Jean-Marie Ballouard
Physiological parameters provide indicators to evaluate how organisms respond to conservation actions. For example, individuals translocated during reinforcement programmes may not adapt to their novel host environment and may exhibit elevated chronic levels of stress hormones and/or decreasing body condition. Conversely, successful conservation actions should be associated with a lack of detrimental physiological perturbation. However, physiological references fluctuate over time and are influenced by various factors (e...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27933039/the-contribution-of-mathematical-modeling-to-understanding-dynamic-aspects-of-rumen-metabolism
#4
André Bannink, Henk J van Lingen, Jennifer L Ellis, James France, Jan Dijkstra
All mechanistic rumen models cover the main drivers of variation in rumen function, which are feed intake, the differences between feedstuffs and feeds in their intrinsic rumen degradation characteristics, and fractional outflow rate of fluid and particulate matter. Dynamic modeling approaches are best suited to the prediction of more nuanced responses in rumen metabolism, and represent the dynamics of the interactions between substrates and micro-organisms and inter-microbial interactions. The concepts of dynamics are discussed for the case of rumen starch digestion as influenced by starch intake rate and frequency of feed intake, and for the case of fermentation of fiber in the large intestine...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27933034/a-novel-molybdenum-containing-methionine-sulfoxide-reductase-supports-survival-of-haemophilus-influenzae-in-an-in-vivo-model-of-infection
#5
Rabeb Dhouib, Dk Seti Maimonah Pg Othman, Victor Lin, Xuanjie J Lai, Hewa G S Wijesinghe, Ama-Tawiah Essilfie, Amanda Davis, Marufa Nasreen, Paul V Bernhardt, Philip M Hansbro, Alastair G McEwan, Ulrike Kappler
Haemophilus influenzae is a host adapted human mucosal pathogen involved in a variety of acute and chronic respiratory tract infections, including chronic obstructive pulmonary disease and asthma, all of which rely on its ability to efficiently establish continuing interactions with the host. Here we report the characterization of a novel molybdenum enzyme, TorZ/MtsZ that supports interactions of H. influenzae with host cells during growth in oxygen-limited environments. Strains lacking TorZ/MtsZ showed a reduced ability to survive in contact with epithelial cells as shown by immunofluorescence microscopy and adherence/invasion assays...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27931189/adaptation-of-propionibacterium-freudenreichii-to-long-term-survival-under-gradual-nutritional-shortage
#6
Flavia Figueira Aburjaile, Marine Rohmer, Hugues Parrinello, Marie-Bernadette Maillard, Eric Beaucher, Gwénaële Henry, Aurélie Nicolas, Marie-Noëlle Madec, Anne Thierry, Sandrine Parayre, Stéphanie-Marie Deutsch, Muriel Cocaign-Bousquet, Anderson Miyoshi, Vasco Azevedo, Yves Le Loir, Hélène Falentin
BACKGROUND: Propionibacterium freudenreichii is an Actinobacterium widely used in the dairy industry as a ripening culture for Swiss-type cheeses, for vitamin B12 production and some strains display probiotic properties. It is reportedly a hardy bacterium, able to survive the cheese-making process and digestive stresses. RESULTS: During this study, P. freudenreichii CIRM-BIA 138 (alias ITG P9), which has a generation time of five hours in Yeast Extract Lactate medium at 30 °C under microaerophilic conditions, was incubated for 11 days (9 days after entry into stationary phase) in a culture medium, without any adjunct during the incubation...
December 8, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27930857/psychosocial-adaptation-and-depressive-manifestations-in-high-risk-pregnant-women-implications-for-clinical-practice
#7
Gamze Fiskin, Meltem Mecdi Kaydirak, Umran Yesiltepe Oskay
BACKGROUND: High-risk pregnancy research has focused primarily on psychological well-being. AIMS: The aim is to determine psychosocial adaptation and depression levels of pregnant women who were admitted to hospital with diagnosis of high-risk pregnancy. METHODS: This study was descriptive. Sampling was composed of 122 high-risk pregnant women who were hospitalized in the perinatology service of Istanbul University Medical School, Department of Obstetrics and Gynecology between January 1, 2014, and May 31, 2014, and met the study criteria...
December 8, 2016: Worldviews on Evidence-based Nursing
https://www.readbyqxmd.com/read/27930706/do-reported-effects-of-acute-aerobic-exercise-on-subsequent-higher-cognitive-performances-remain-if-tested-against-an-instructed-self-myofascial-release-training-control-group-a-randomized-controlled-trial
#8
Max Oberste, Wilhelm Bloch, Sven T Hübner, Philipp Zimmer
A substantial body of evidence suggests positive effects of acute aerobic exercise (AAE) on subsequent higher cognitive functions in healthy young adults. These effects are widely understood as a result of the ongoing physiological adaptation processes induced by the preceding AAE. However, designs of published studies do not control for placebo, Hawthorne and subject expectancy effects. Therefore, these studies do not, at a high degree of validity, allow attributing effects of AEE on subsequent cognitive performance to exercise induced physical arousal...
2016: PloS One
https://www.readbyqxmd.com/read/27930683/deep-insight-into-the-phosphatomes-of-parasitic-protozoa-and-a-web-resource-protozphosdb
#9
Tamanna Anwar, Samudrala Gourinath
Phosphorylation dynamically regulates the function of proteins by maintaining a balance between protein kinase and phosphatase activity. A comprehensive understanding of the role phosphatases in cellular signaling is lacking in case of protozoans of medical and veterinary importance worldwide. The drugs used to treat protozoal diseases have many undesired effects and the development of resistance, highlights the need for new effective and safer antiprotozoal agents. In the present study we have analyzed phosphatomes of 15 protozoans of medical significance...
2016: PloS One
https://www.readbyqxmd.com/read/27928204/a-feasibility-study-related-to-inactive-cancer-survivors-compared-with-non-cancer-controls-during-aerobic-exercise-training
#10
Scott N Drum, Riggs J Klika, Susan D Carter, Lisa K Sprod, Lars Donath
Cancer survivors (CA) tend to demonstrate metabolic, cardiac, and ventilatory alterations due to previous chemotherapy and radiation that may impair adaptability following aerobic exercise training. Exercise training adaptations of CA finished with primary treatment compared to non-cancer participants (NC) have not yet been extensively elucidated. Thus, the present study compared physiologic responses of CA versus NC following a low-to-moderate intensity, 8-wk aerobic training program. Thirty-seven previously sedentary participants (CA: n = 14, 12 females; NC: n = 23, 19 females) with no heart or metabolic disease did not differ in age, height, weight, and body mass index (51 ± 2 y, 1...
December 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27927764/circulating-microrna-are-predictive-of-aging-and-acute-adaptive-response-to-resistance-exercise-in-men
#11
Lee M Margolis, Sarah J Lessard, Yassine Ezzyat, Roger A Fielding, Donato A Rivas
Circulating microRNA (c-miRNA) have the potential to function as novel noninvasive markers of the underlying physiological state of skeletal muscle. This investigation sought to determine the influence of aging on c-miRNA expression at rest and following resistance exercise in male volunteers (Young: n = 9; Older: n = 9). Primary findings were that fasting c-miRNA expression profiles were significantly predictive of aging, with miR-19b-3p, miR-206, and miR-486 distinguishing between age groups. Following resistance exercise, principal component analysis revealed a divergent response in expression of 10 c-miRNA, where expression profiles were upregulated in younger and downregulated in older participants...
December 7, 2016: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/27927623/metabolic-and-functional-characterization-of-effects-of-developmental-temperature-in-drosophila-melanogaster
#12
Mads F Schou, Torsten Nygaard Kristensen, Anders Pedersen, Goran B Karlsson, Volker Loeschcke, Anders Malmendal
The ability of ectotherms to respond to changes in their thermal environment through plastic mechanisms is central to their adaptive capability. However, we still lack knowledge on physiological and functional responses by which ectotherms acclimate to temperatures during development, and in particular, how physiological stress at extreme temperatures may counteract beneficial acclimation responses at benign temperatures. We exposed Drosophila melanogaster to ten developmental temperatures covering their entire permissible temperature range...
December 7, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27927182/the-complete-genome-sequence-of-the-african-buffalo-syncerus-caffer
#13
Brigitte Glanzmann, Marlo Möller, Nikki le Roex, Gerard Tromp, Eileen G Hoal, Paul D van Helden
BACKGROUND: The African buffalo (Syncerus caffer) is an important role player in the savannah ecosystem. It has become a species of relevance because of its role as a wildlife maintenance host for an array of infectious and zoonotic diseases some of which include corridor disease, foot-and-mouth disease and bovine tuberculosis. To date, no complete genome sequence for S. caffer had been available for study and the genomes of other species such as the domestic cow (Bos taurus) had been used as a proxy for any genetics analysis conducted on this species...
December 7, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27927169/comparative-phylogeography-in-the-atlantic-forest-and-brazilian-savannas-pleistocene-fluctuations-and-dispersal-shape-spatial-patterns-in-two-bumblebees
#14
Elaine Françoso, Alexandre Rizzo Zuntini, Ana Carolina Carnaval, Maria Cristina Arias
BACKGROUND: Bombus morio and B. pauloensis are sympatric widespread bumblebee species that occupy two major Brazilian biomes, the Atlantic forest and the savannas of the Cerrado. Differences in dispersion capacity, which is greater in B. morio, likely influence their phylogeographic patterns. This study asks which processes best explain the patterns of genetic variation observed in B. morio and B. pauloensis, shedding light on the phenomena that shaped the range of local populations and the spatial distribution of intra-specific lineages...
December 7, 2016: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/27927026/modulation-of-local-and-systemic-heterocellular-communication-by-mechanical-forces-a-role-of-enos
#15
Ralf Erkens, Tatsiana Suvorava, Christian M Kramer, Lukas Diederich, Malte Kelm, Miriam Margherita Cortese-Krott
SIGNIFICANCE: In this review, we discuss the role of nitric oxide (NO) as a key physiological mechanotransducer modulating both local and systemic heterocellular communication, and contributing to the integrated (patho)physiology of the cardiovascular system. A deeper understanding of mechanotransduction-mediated local and systemic nodes controlling heterocellular communication between the endothelium, blood cells and other cell types (e.g. cardiomyocytes) may suggest novel therapeutic strategies for endothelial dysfunction and cardiovascular disease...
December 7, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27925702/quantitative-elastosonography-of-the-myotendinous-junction-normal-behavior-and-correlation-with-a-standard-measurement-system-during-functional-tests
#16
Paolo Minafra, Chandra Bortolotto, Ermanno Rampinini, Fabrizio Calliada, Giuseppe Monetti
OBJECTIVES: In recent years, an increasing need to use imaging to assess normal and adaptive muscle function, in addition to its anatomy and structure, has emerged. We evaluated the myotendinous junction's elastosonographic behavior in light of the most recent literature on its physiologic behavior. The elastosonographic studies were compared with the results obtained from a standard measurement system to ensure a correlation with maximal muscle contraction. METHODS: Nineteen male professional soccer players were assessed during functional tests...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925380/angiotensin-converting-enzyme-2-polymorphisms-and-postexercise-hypotension-in-hypertensive-medicated-individuals
#17
Karla F Goessler, Marcos D Polito, Gloria de F Mota, Edilamar M de Oliveira, Véronique A Cornelissen
The renin-angiotensin aldosterone system (RAAS) is associated with diverse physiological responses and adaptations to exercise. The angiotensin converting enzyme (ACE) 2 has vasodilatory effects, which might be associated with the blood pressure (BP) responses to acute exercise. The aim of this study was to investigate the role of ACE2 polymorphisms in postexercise hypotension (PEH). Thirty-four medicated hypertensive (61·3 ± 1·7 years, 76·1 ± 2·7 kg, 160 ± 1·6 cm) men (n = 12) and women (n = 22), participated in a control and a moderate intensity exercise session in a randomized order...
December 7, 2016: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/27924559/isolation-and-characterization-of-intrinsically-active-mek-independent-mutants-of-mpk1-erk
#18
Tal Goshen-Lago, Dganit Melamed, Arie Admon, David Engelberg
The extracellular-regulated kinase (Erk) pathway is a major determinant in the control of diverse cellular processes, such as proliferation, differentiation, survival, and motility. The pathway executes its effects through kinases of the Erk family. Erks are not only critical for a variety of physiological processes, but are also associated with neurodegenerative diseases, cardiovascular diseases, diabetes and a large number of human cancers. However, the exact role of each Erk molecule in these biological and pathological processes is not fully determined...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924461/life-satisfaction-and-hemodynamic-reactivity-to-mental-stress
#19
Andreas Schwerdtfeger, Kerstin Gaisbachgrabner, Claudia Traunmüller
BACKGROUND: Satisfaction with life has been considered a health-protective variable, which could impact cardiovascular morbidity and mortality. However, few studies have examined the physiological pathways involved in the potentially salutary effect of life satisfaction. It was hypothesized that life satisfaction should be associated with a cardiovascular response profile that signals challenge (i.e., higher cardiac output, lower peripheral resistance), rather than threat during a mental stress task...
December 6, 2016: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/27924215/influence-diagram-of-physiological-and-environmental-factors-affecting-heart-rate-variability-an-extended-literature-overview
#20
REVIEW
Julien Fatisson, Victor Oswald, François Lalonde
Heart rate variability (HRV) corresponds to the adaptation of the heart to any stimulus. In fact, among the pathologies affecting HRV the most, there are the cardiovascular diseases and depressive disorders, which are associated with high medical cost in Western societies. Consequently, HRV is now widely used as an index of health. In order to better understand how this adaptation takes place, it is necessary to examine which factors directly influence HRV, whether they have a physiological or environmental origin...
January 2016: Heart International
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