Results 141 to 150 of about 12,284 (257)

Balancing Aerobic and Anaerobic Metabolism, and Its Effect on Recovery Time in Freely‐Diving Steller Sea Lions (Eumetopias jubatus)

open access: yesMarine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT As breath‐hold divers, marine mammals must coordinate their use of both aerobic and anaerobic metabolism to maximize their time at depth. One indication of the relative reliance between these two energy‐producing systems is the aerobic dive limit (ADL), defined as the dive duration where post‐dive blood lactate concentrations surpass resting ...
Aaron S. Purdy, David A. S. Rosen
wiley   +1 more source

Open-flow respirometry under field conditions: How does the airflow through the nest influence our results? [PDF]

open access: yes
Open-flow respirometry is a common method to measure oxygen-uptake as a proxy of energy expenditure of organisms in real-time. Although most often used in the laboratory it has seen increasing application under field conditions.
Dill, V, Dausmann, KH, Nowack, J
core   +1 more source

Passage‐Dependent Size Distributions of Human‐Derived Cells: Implications for Metabolic Assays

open access: yesThe FASEB Journal, Volume 40, Issue 12, 30 June 2026.
Cell size changes with passage. This propagates into size‐dependent functional readouts, such as metabolic assays. ABSTRACT Biological noise is ubiquitous in living systems; yet, it is often neglected in cell‐based experiments, potentially biasing data interpretation.
Ermes Botte   +3 more
wiley   +1 more source

The pyruvate generator is a common phenomenon in mitochondria from different rat and mouse brain regions

open access: yesFEBS Letters, Volume 600, Issue 12, Page 1770-1781, June 2026.
The pyruvate generator, which causes activation of respiration by extra‐mitochondrial Ca2+, is also present and functional in rat brainstem mitochondria, as it is in other brain regions. This finding is confirmed by experiments with a fully reconstituted malate–aspartate shuttle (MAS).
Grazyna Debska‐Vielhaber   +7 more
wiley   +1 more source

Sex differences in brain glucose metabolism and Alzheimer's disease risk and progression

open access: yesAlzheimer's &Dementia, Volume 22, Issue 6, June 2026.
Abstract Sex differences are increasingly recognized as central to the biology of Alzheimer's disease (AD), yet the mechanisms through which they shape brain metabolism and disease vulnerability remain incompletely understood. Brain glucose hypometabolism is a core hallmark of AD and emerges decades before clinical decline, but accumulating evidence ...
Marjan Ramezan   +4 more
wiley   +1 more source

Novel Approaches for the Application of Mitochondrial Respirometry in Human Studies

open access: yes
Though mitochondrial research has become more prominent in the last forty years, most methodologies to study mitochondria have been focused on cell and animal models.
Osto, Corey Afsheen
core  

The myth of the metabolic baseline: sleep–wake cycles undermine a foundational assumption in organismal biology

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1491-1510, June 2026.
ABSTRACT Basal and standard metabolic rate (BMR and SMR) are cornerstones of physiological ecology and are assumed to be relatively fixed intrinsic properties of organisms that represent the minimum energy required to sustain life. However, this assumption is conceptually flawed. Many core maintenance processes underlying SMR are temporally partitioned
Helena Norman   +4 more
wiley   +1 more source

Waste activated sludge high‐rate treatment of septage: Biodegradability studies and contact phase trials towards a cleaner environment

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 6, Page 2842-2861, June 2026.
Abstract The waste activated sludge high‐rate (WASHR) process, developed in our previous study, is used for septic wastewater treatment. This high‐rate contact stabilization pre‐treatment uses typical waste streams found in wastewater treatment plants to reduce a portion of the loadings on the main treatment trains.
Arman Shirali   +2 more
wiley   +1 more source

Evaluating the Air Respiratory Capacity of Awaous (Chonophorus) tajasica (Gobiiformes: Oxudercidae): A Morpho‐Functional Study

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 5, Page 498-507, June 2026.
We demonstrated that Awaous tajasica performs facultative air breathing under experimental conditions of dissolved oxygen limitation, retaining air bubbles in the buccal cavity during gill ventilation. Morpho‐functional evidence indicates the use of atmospheric oxygen as a respiratory support under conditions of low water oxygenation.
João Pedro Trevisan   +3 more
wiley   +1 more source

Multimodal Assessment of Kidney Quality During 24‐h of Normothermic Machine Perfusion

open access: yesArtificial Organs, Volume 50, Issue 6, Page 851-865, June 2026.
Normothermic machine perfusion (NMP) has emerged as a promising tool for assessing kidney quality prior to transplantation; however, reliable biomarkers remain to be established. In this study, thirteen porcine kidneys were perfused for 24 h using an autologous leukocyte‐filtered whole blood‐based perfusate applying urine recirculation.
Marlene Pühringer   +22 more
wiley   +1 more source

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