scholarly journals Partitioning the metabolic scope: the importance of anaerobic metabolism and implications for the oxygen- and capacity-limited thermal tolerance (OCLTT) hypothesis

2016 ◽  
Vol 4 (1) ◽  
pp. cow019 ◽  
Author(s):  
Rasmus Ejbye-Ernst ◽  
Thomas Y. Michaelsen ◽  
Bjørn Tirsgaard ◽  
Jonathan M. Wilson ◽  
Lasse F. Jensen ◽  
...  
Keyword(s):  
Thermal Tolerance ◽  
Anaerobic Metabolism ◽  
Metabolic Scope

Lactate and glucose metabolism in mouse (Mus musculus) and reptile (Anolis carolinensis) skeletal muscle

1993 ◽  
Vol 264 (3) ◽  
pp. R487-R491 ◽  
Author(s):  
S. J. Wickler ◽  
T. T. Gleeson
Keyword(s):  
Skeletal Muscle ◽  
Anaerobic Metabolism ◽  
Muscle Metabolism ◽  
Anolis Carolinensis ◽  
Oxidation Rates ◽  
Hindlimb Muscles ◽  
Metabolic Scope ◽  
The Subject ◽  
Glycogen Stores

The reliance on anaerobic metabolism during exercise in lizards has been the subject of a growing body of literature in activity metabolism. Prior studies have demonstrated that lizards rely more on postexercise lactate to regenerate depleted glycogen stores than do many mammals. These studies prompted an in vitro comparison between the metabolic mechanisms for the handling of lactate and glucose in the muscles of a small mammal and lizard. Hindlimb muscles of Mus and Anolis were stimulated to fatigue and then incubated in the presence of 15 mM lactate and either 5.5 (mice) or 8.5 (anoles) mM glucose. Oxidation rates of lactate and glucose were seven to eight times higher in mice. Both species oxidized more lactate than glucose (8 to 9 times). However, anole muscle showed a preference for lactate as a substrate for glycogenesis, incorporating 1.5 times as much lactate (expressed in glucose equivalents) as glucose. In contradistinction, mice incorporated 2.8 times as much glucose into glycogen as lactate. The quantitative differences in metabolic scope of mammals and reptiles are accompanied by fundamental differences in the capacity and patterns of skeletal muscle metabolism of lactate and glucose.

Thermal tolerance, metabolic scope and performance of meagre, Argyrosomus regius, reared under high water temperatures

2021 ◽  
pp. 103063
Author(s):  
Orestis Stavrakidis-Zachou ◽  
Konstadia Lika ◽  
Pavlidis Michail ◽  
Aleka Tsalafouta ◽  
Asaad H. Mohamed ◽  
...  
Keyword(s):  
Thermal Tolerance ◽  
High Water ◽  
Metabolic Scope ◽  
Argyrosomus Regius ◽  
And Performance

Platelet Metabolism during the Interiorization of Two Different Types of Particulate Matter

1972 ◽  
Vol 27 (02) ◽  
pp. 263-271 ◽  
Author(s):  
I. A. Cooper ◽  
P Cochrane ◽  
B. G. Firkin ◽  
K. J. Pinkard
Keyword(s):  
Particulate Matter ◽  
Polymorphonuclear Leukocyte ◽  
Anaerobic Metabolism ◽  
Human Platelets ◽  
Metabolic Changes ◽  
Polystyrene Latex ◽  
Considerable Time ◽  
Difference Of Opinion ◽  
Different Types ◽  
Aerobic And Anaerobic

SummaryIt has been suggested that human platelets possess the ability to phagocytose particulate matter similar to the polymorphonuclear leukocyte. However some difference of opinion has arisen regarding this contention, particularly as differences have been demonstrated with regard to the observed metabolic changes occurring in platelets related to such a process.The experiments reported in this paper were designed to observe the aerobic and anaerobic metabolism in human platelets during and following interiorization of two different particles, viz. polystyrene latex and thorotrast. The results of these experiments show a marked difference between both types of particles with regard to observable metabolic changes despite the rapid interiorization of both types of material. Some alteration occurs in both aerobic and anaerobic metabolism a considerable time after interiorization of latex, whereas no alteration could be demonstrated after interiorization of thorotrast. It is suggested that the interiorization of particulate matter is by some process other than phagocytosis and that observed metabolic changes related to latex may be due to a release reaction.

Anaerobic Metabolism of the Agro-Pesticide Nitroxinil by Bovine Ruminal Fluid

2015 ◽  
Vol 8 (2) ◽  
pp. 101-108 ◽  
Author(s):  
Ignacio Irazoqui ◽  
Alfonso Rodriguez ◽  
Estefanía Birriel ◽  
Martin Gabay ◽  
Maria Lavaggi ◽  
...  
Keyword(s):  
Anaerobic Metabolism ◽  
Ruminal Fluid

scholarly journals Thermal Inactivation of Susceptible and Multiantimicrobial-Resistant Salmonella Strains Grown in the Absence or Presence of Glucose

2003 ◽  
Vol 69 (7) ◽  
pp. 4123-4128 ◽  
Author(s):  
R. T. Bacon ◽  
J. R. Ransom ◽  
J. N. Sofos ◽  
P. A. Kendall ◽  
K. E. Belk ◽  
...  
Keyword(s):  
Heat Stress ◽  
Protective Effect ◽  
Thermal Tolerance ◽  
Thermal Inactivation ◽  
Survival Curves ◽  
Acid Adaptation ◽  
Circulating Water ◽  
Glucose Levels ◽  
Study Results ◽  
Peptone Water

ABSTRACT The heat resistance of susceptible and multiantimicrobial-resistant Salmonella strains grown to stationary phase in glucose-free tryptic soy broth supplemented with 0.6% yeast extract (TSBYE−G; nonadapted), in regular (0.25% glucose) TSBYE, or in TSBYE−G with 1.00% added glucose (TSBYE+G; acid adapted) was determined at 55, 57, 59, and 61°C. Cultures were heated in sterile 0.1% buffered peptone water (50 μl) in heat-sealed capillary tubes immersed in a thermostatically controlled circulating-water bath. Decimal reduction times (D values) were calculated from survival curves having r 2 values of >0.90 as a means of comparing thermal tolerance among variables. D 59°C values increased (P < 0.05) from 0.50 to 0.58 to 0.66 min for TSBYE−G, TSBYE, and TSBYE+G cultures, respectively. D 61°C values of antimicrobial-susceptible Salmonella strains increased (P < 0.05) from 0.14 to 0.19 as the glucose concentration increased from 0.00 to 1.00%, respectively, while D 61°C values of multiantimicrobial-resistant Salmonella strains did not differ (P > 0.05) between TSBYE−G and TSBYE+G cultures. When averaged across glucose levels and temperatures, there were no differences (P > 0.05) between the D values of susceptible and multiantimicrobial-resistant inocula. Collectively, D values ranged from 4.23 to 5.39, 1.47 to 1.81, 0.50 to 0.66, and 0.16 to 0.20 min for Salmonella strains inactivated at 55, 57, 59, and 61°C, respectively. zD values were 1.20, 1.48, and 1.49°C for Salmonella strains grown in TSBYE+G, TSBYE, and TSBYE−G, respectively, while the corresponding activation energies of inactivation were 497, 493, and 494 kJ/mol. Study results suggested a cross-protective effect of acid adaptation on thermal inactivation but no association between antimicrobial susceptibility and the ability of salmonellae to survive heat stress.

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