Rate of Respiration of Tissues in Contact with Oxygen.

Huston, M.; Martin, Arthur W.

doi:10.3181/00379727-86-21022

Cited by 11 publications

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“…The summated tissue metabolism in vitro was found to reach only 66 to 72.5% of the basal metabolism of studied animals (Field et al 1939;Martin & Fuhrman, 1941;Fuhrman et al, 1961). Only the results reported by Huston & Martin (1954) obtained by a modified technique of measurements gave the sum of 101.8%. The results of the present experiments, corrected according to the discussed principles, also contradict the conviction of Terroine & Roche (1925), that in vitro the tissue metabolic rate is identical in large and small animals.…”

Section: Discussionmentioning

confidence: 90%

“…Hence as a rule it is assumed that slices not thicker than 0.5 mm participate as a whole in the respiration. Huston & Martin (1954) observed, however, that slices placed in the Warburg flask on a special padding made of fiber glass utilized more oxygen than the alike slices studied by the standard technique. These authors explained the observed phenomenon by better penetration of oxygen in the modified method.…”

Section: Introductionmentioning

confidence: 86%

“…Due to these differences the summated tissue metabolism varied between 66% (Field et al, 1939) and 101% (Huston & Martin, 1954) of the whole animal basal metabolism. Discrepancies in results obtained by various authors might he related to different methods of estimation, especially in respect of the composition of incubation medium and in the thickness of tissue slices.…”

Section: Introductionmentioning

confidence: 99%

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Metabolic rate of tissue slices of rats and rabbits as affected by age and body size

Jusiak

1969

Acta Theriol.

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The studies were carried out by the Warburg technique and the obtained results corrected after establishing by the method of C a s c ar a n o et al. what part of the incubated slices participates in the respiration. Most of the studied tissues from small animals showed higher metabolic rate than the homologous tissues derived from large animals, but the difference was less pronounced than that between basal metabolic rates. The estimated sum of tissue metabolism in young rats approached 100% of their basal metabolic rate, but in the case of adult rats this figure amounted only to 70%>. These results indicate that the metabolism of tissues in vitro is markedly different from their metabolism in vivo. In the author's opinion the main reason for this discrepancy lies in the fast disappearance of the effect of central regulating systems (nervous and humoral) on the metabolic processes occurring in cells of the isolated tissues.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Metabolic rate of tissue slices of rats and rabbits as affected by age and body size

Jusiak

1969

Acta Theriol.

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“…The increase of muscle metabolism in the rats acclimated to 5°C (45%) was almost twice as large as that of BMR in intact animals acclimated to the same temperature (24%). This is, however, not surprising, since the muscle mass of adult rats contributes only about 44% of the body weight (Huston & Martin, 1954) and some organs (e.g. kidney) do not play any role in NST (Jansky, 1973) so that the increase of muscle metabolism evoked by cold acclimation should be relatively high.…”

Section: Discussionmentioning

confidence: 99%

The effects of acclimation to moderate and acute cold in rats

Poczopko¹,

Jusiak²,

Tomaszewska³

1978

Acta Theriol.

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In adult (300-400 g) male Wistar rats, acclimated for 3 weeks either to moderate (13 ± 1°C) or acute (5 ± 1°C) cold the changes of the metabolic rate in intact animals, respiration of muscle and liver slices in vitro, urinary catecholamine excretion and total serum thyroxine concentration have been measured. After 21 days of acclimation to both temperatures the basal metabolic rate (BMR) was elevated. Acclimation to 5°C accelerated also the metabolic rate in vitro of both tissue tested, whereas acclimation to 13°C produced a slight e!evation of the metabolism of muscle slices and a decrease of that of liver slices. Urinary adrenaline excretion during exposure of rats to 5°C was 5 to 13 times higher than prior to exposure, whereas the rise in noradrenaline excretion was much less pronounced. In rats acclimated to 13°C after a rise of urinary excretion of both amines taking place during first few days, a drop to approximately initial level occurred. Practically no changes in total serum thyroxine concentration took p'ace at exposure to both temperatures. The authors conclude that observed rise in adrenergic system activity may fully explain acceleration of the metabolism of isolated tissues as well as BMR.

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“…HUSTON & MARTIN (1954) durch unregelm~if~iges Trocknen der Gewebe (und m6gliches Verkohlen) variabel wird, kann unter Umstiinden ein wechselnder Beitrag zur HShe der summierten Gewebsatmung entstehen, der allerdings nicht betr~ichtlich sein wird.…”

Section: Zur Frage Der Stoffwechselh6heunclassified

Total metabolism and summated tissue respiration in relation to body size

Locker¹,

Weish²

1967

Helgolander Wiss. Meeresunters

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Total metabolism and summated tissue respiration in relation to body size. Recording weight-specific total body metabolism of the mouse at two ambient temperatures (22.5 °, 350 C) and plotting the resulting data on a double logarithmic grid revealed a cyclic allometry with a positive constant between 1.3 and 5 g body weight (cycle I) and a negative constant between 5 (or 7) and 23 g (cycle II). Similar cycles concerning the weight-allometry of the mass of several organs (brain, heart, liver, skin) and the tissue respiration of brain, liver, intestine and kidneys are statistically significant. If the summated tissue respiration is determined over the entire body size range --by summing up tissue respiration for several individual body weights and calculating the regression lines-two cycles are, again, observable; their slopes cannot be distinguished statistically from those of the cycles of total body 02-uptake at 35 ° C. Its intensity, however, is considerably lower than that of the directly measured total body metabolism. If certain corrections are applied (inclusion of skin respiration and extrapolation of respiration in vitro to tO the intensity of summated tissue respiration as well as its slope coincide well with the BMR obtained from literature.

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Rate of Respiration of Tissues in Contact with Oxygen.

Cited by 11 publications

References 0 publications

Metabolic rate of tissue slices of rats and rabbits as affected by age and body size

Metabolic rate of tissue slices of rats and rabbits as affected by age and body size

The effects of acclimation to moderate and acute cold in rats

Total metabolism and summated tissue respiration in relation to body size

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