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Dataset results
38 results for “aerobic metabolism”
The thermal performance curve for aerobic metabolism of a flying endotherm
<p>Performance benefits of stable, warm muscles are believed to be important for the evolution of endothermy in mammals, birds, and flying insects. However, thermal performance curves have never been measured for a free-flying endotherm, as it is challenging to vary body temperatures of these animals, and maximal flight performance is difficult to elicit. We varied air temperatures and gas densities to manipulate thoracic temperatures of flying honey bees from 29-44°C, with low air densities used to increase flight metabolic rates to maximal values. Honey bees showed a clear thermal performance curve with an optimal temperature of 39°C. Maximal flight metabolic rates increased by ~2% per 1°C increase in thoracic temperature at suboptimal thoracic temperatures, but decreased ~5% per 1°C increase as the bees continued to heat up. This study provides the first quantification of the maximal metabolic performance benefit of thermoregulation in an endotherm. These data directly support aerobic capacity models for benefits of thermoregulation in honey bees, and suggest that improved aerobic capacity likely contributes to the multiple origins of endothermic heterothermy in bees and other insects.</p>
Data from: Mitonuclear interactions impact aerobic metabolism in hybrids and may explain mitonuclear discordance in young, naturally hybridizing bird lineages
<p>Understanding genetic incompatibilities and genetic introgression between incipient species are major goals in evolutionary biology. Mitochondrial genes evolve rapidly and exist in dense gene networks with coevolved nuclear genes, suggesting that mitochondrial respiration may be particularly susceptible to disruption in hybrid organisms. Mitonuclear interactions have been demonstrated to contribute to hybrid dysfunction between deeply divergent taxa crossed in the laboratory, but there are few empirical examples of mitonuclear interactions between younger lineages that naturally hybridise. Here we use controlled hybrid crosses and high resolution respirometry to provide the first experimental evidence in a bird that inter-lineage mitonuclear interactions impact mitochondrial aerobic metabolism. Specifically, respiration capacity of the two mitodiscordant backcrosses (with mismatched mito-nuclear combinations) differ from one another, although they do not differ significantly from the parental groups or mitoconcordant backcrosses as we would expect of mitonuclear disruptions. In the wild hybrid zone between these subspecies the mitochondrial cline centre is shifted west of the nuclear cline centre, which is consistent with the direction of our experimental results. Our results therefore demonstrate asymmetric mitonuclear interactions that impact the capacity of cellular mitochondrial respiration and may help to explain the geographic discordance between mitochondrial and nuclear genomes observed in the wild.</p>
Data of the effects of temperature and dissolved oxygen on thermal biology and aerobic metabolism of tropical Callinectes sapidus crabs
<p>This file contains raw data on the effects of temperature and dissolved oxygen on several aspects of the physiology of the Callinectes sapidus tropical population. </p> <p>I. Data on thermal biology includes the effects of acclimation temperatures on 1) Preferred temperature; 2) Critical thermal minima and maxima; 3) Thermal safety margin (TSM); Thermal metabolic scope (TMS).</p> <p>II. Data on the combined effects of temperature and dissolved oxygen on routine oxygen consumption of C. sapidus. </p> <p>Those data was sent as a scientific paper to the Journal of Thermal Biology. </p> <p> </p>
Supplementary data for the manuscript titled 'Energy metabolism and aerobic respiratory chain of Vitreoscilla sp. C1: Comparison with beta-proteobacteria'
<p>This dataset contains the supplementary data files for the manuscript titled, 'Energy metabolism and aerobic respiratory chain of Vitreoscilla sp. C1: Comparison with beta-proteobacteria.' </p>
Data from: Mitonuclear interactions impact aerobic metabolism in hybrids and may explain mitonuclear discordance in young, naturally hybridizing bird lineages
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The thermal performance curve for aerobic metabolism of a flying endotherm
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Data from: Ecophysiological limits to aerobic metabolism in hypoxia determine epibenthic distributions and energy sequestration in the northeast Pacific ocean
Expansion of oxygen deficient waters (hypoxia) in the northeast Pacific Ocean (NEP) will have marked impacts on marine life. The response of the resident communities will be a function of their ecophysiological constraints in low oxygen, although this remains untested in the NEP due to a lack of integrative studies. Here, we combine in situ surveys and lab-based respirometry experiments were conducted on three indicator species (spot prawn Pandalus platyceros, slender sole Lyopsetta exilis, squat lobster Munida quadrispina) of seasonally hypoxic systems in the NEP to test if metabolic constraints determine distributions and energy sequestration in a hypoxic setting. These experiments were integrated with a global review of critical oxygen levels ( math formula; lower threshold of aerobic metabolism) for crustaceans to determine if math formula-based hypoxia thresholds are different among ocean basins. Our results show that species-specific differences in math formula and standard metabolic rates (1) determine the lowest environmental oxygen ([O2]env) at which in situ populations occur, (2) result in disproportionate shifts in distributions among co-occurring species during summer hypoxia expansion events, and (3) characterize shifts in megafaunal community respiration rates due to marked spatio-temporal variability in [O2]env. Our results show that math formula-based hypoxia thresholds are significantly lower in the East Pacific Ocean relative to other major ocean basins, which suggests that the physiological response of local fauna to deoxygenation can be determined by the natural variability and oxygen exposure in a region. In order to establish realistic predictions on the biological consequences of marine deoxygenation, we suggest integrating metabolism-based traits to calculate hypoxia thresholds for marine ecosystems.
Periodized Aerobic Interval Training in Metabolic Syndrome
ClinicalTrials.gov study NCT03119493. IPD Sharing: NO. Countries: 1. Publications: 1.
Investigating the Effects of Aerobic and Resistance Training in Vivo on Skeletal Muscle Metabolism in Vitro in Primary Human Muscle Cells (MoTrMyo)
ClinicalTrials.gov study NCT04334343. IPD Sharing: NO. Countries: 1. Publications: 19.
Aerobic Exercise With Diet Induces Hormonal, Metabolic, and Psychological Changes
ClinicalTrials.gov study NCT05136742. IPD Sharing: YES. Countries: 1. Publications: 1.
Effects of Aging and Aerobic Exercise Training on Brain Glucose Metabolism
ClinicalTrials.gov study NCT01738568. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Research on the Enhancement of Aerobic Metabolic Energy Supply Capacity by Ischemic Preconditioning.
ClinicalTrials.gov study NCT07170774. IPD Sharing: NO. Countries: 1. Publications: 4.
Data for: Sex-specific differences in swimming, aerobic metabolism, and recovery from exercise in adult coho salmon (Oncorhynchus kisutch) across ecologically relevant temperatures
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Data from: Ecophysiological limits to aerobic metabolism in hypoxia determine epibenthic distributions and energy sequestration in the northeast Pacific ocean
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Data for Interindividual variation in maximum aerobic metabolism varies with gill morphology and myocardial bioenergetics in Gulf killifish
<p>This study asked whether interindividual variation in maximum and standard aerobic metabolic rates of the Gulf killifish, Fundulus grandis, correlate with gill morphology and cardiac mitochondrial bioenergetics, traits reflecting critical steps in the O<sup>2</sup> transport cascade from the environment to the tissues. Maximum metabolic rate (MMR) was positively related to body mass, total gill filament length, and myocardial oxygen consumption during maximum oxidative phosphorylation (multiple R<sup>2</sup> = 0.836). Standard metabolic rate (SMR) was positively related to body mass, total gill filament length, and myocardial oxygen consumption during maximum electron transport system activity (multiple R<sup>2</sup> = 0.717). After controlling for body mass, individuals with longer gill filaments, summed over all gill arches, or greater cardiac respiratory capacity had higher whole-animal metabolic rates. The overall model fit and the explanatory power of individual predictor variables were better for MMR than for SMR, suggesting that gill morphology and myocardial bioenergetics are more important in determining maximum rather than resting metabolism. After controlling for body mass, heart ventricle mass was not related to variation in MMR or SMR, indicating that the quality of the heart (i.e., the capacity for mitochondrial metabolism) was more influential than heart size. Finally, myocardial oxygen consumption required to offset the dissipation of the transmembrane proton gradient in the absence of ATP synthesis was not correlated with either MMR or SMR. The results support the idea that interindividual variation in aerobic metabolism, particularly MMR, is associated with variation in specific steps in the O<sup>2</sup> transport cascade.</p>
Sequences of Aerobic and Resistance Exercise and Cardio-metabolic Functions in T2D
ClinicalTrials.gov study NCT06145542. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Calorespirometry reveals that goldfish prioritize aerobic metabolism over metabolic rate depression in all but near-anoxic environments
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Data for Interindividual variation in maximum aerobic metabolism varies with gill morphology and myocardial bioenergetics in Gulf killifish
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A YY1-dependent increase in aerobic metabolism is indispensable for intestinal organogenesis
GEO Series GSE85602. Mus musculus. 4 samples. Type: Expression profiling by array.
Canagliflozin combined with aerobic exercise protects against chronic heart failure in rats via regulating the retinol metabolism signaling pathway.
GEO Series GSE225149. Rattus norvegicus. 11 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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