Microcalorimetric studies on metabolism of hepatic tissue. I. A methodological study of normal tissue.
In the present study, the heat production of liver biopsies (5-8 mg) was measured by a microcalorimetric technique. Tissue incubated in Leibowitz L-15 medium (L-15) showed a higher metabolic rate compared to tissue incubated in a medium without substrate 2.8 microW/mg and 1.75 microW/mg, respectively. Heat production was found to be related to weight density. No difference in the metabolic rate was found after organ perfusion in comparison to nonperfused liver. Storage in medium L-15 at 4 degrees C caused a lower rate of heat production, but if the tissue was stored in an electrolyte balance solution without substrate, no difference was seen compared to fresh tissue. Recording heat production with the present calorimetric technique is relatively simple and rapid and allows measurement of small samples.
Asakawa
H
H
Research Department of Surgery, University Hospital, Lund, Sweden.
Nässberger
L
L
Monti
M
M
D000818:Animals; D001833:Body Temperature Regulation; D002151:Calorimetry; D007700:Kinetics; D008099:Liver / Q000033:anatomy & histology / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D009929:Organ Size; D010101:Oxygen Consumption; D010477:Perfusion; D011506:Proteins / Q000378:metabolism; D051381:Rats; D011919:Rats, Inbred Strains; D012969:Sodium Fluoride / Q000494:pharmacology; D013997:Time Factors
D011506:Proteins; D012969:Sodium Fluoride