Comparison of the Effect of Semisynthetic Human Insulin and Porcine Insulin on Glucose Kinetics, Plasma Free Fatty Acid and Amino Acid Levels in Man

1984 ◽  
Vol 16 (06) ◽  
pp. 271-274 ◽  
Author(s):  
R. Müller ◽  
W. Berger ◽  
H. Wick ◽  
U. Keller
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Free Fatty Acid ◽  
Human Insulin ◽  
Plasma Free Fatty Acid ◽  
Porcine Insulin ◽  
Glucose Kinetics ◽  
Amino Acid Levels

scholarly journals Effects of Hyperglycemia on the Time Course of Changes in Energy Metabolism and pH during Global Cerebral Ischemia and Reperfusion in Rats: Correlation of 1H and 31P NMR Spectroscopy with Fatty Acid and Excitatory Amino Acid Levels

1992 ◽  
Vol 12 (3) ◽  
pp. 456-468 ◽  
Author(s):  
Hans Widmer ◽  
Hisashi Abiko ◽  
Alan I. Faden ◽  
Thomas L. James ◽  
Philip R. Weinstein
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Energy Metabolism ◽  
Free Fatty Acid ◽  
Time Course ◽  
Excitatory Amino Acid ◽  
Serum Glucose ◽  
Peak Ratio ◽  
Amino Acid Levels ◽  
Complete Brain Ischemia

The effects of hyperglycemia on the time course of changes in cerebral energy metabolite concentrations and intracellular pH were measured by nuclear magnetic resonance (NMR) spectroscopy in rats subjected to temporary complete brain ischemia. Interleaved 31P and 1H NMR spectra were obtained every 5 min before, during, and for 2 h after a 30-min bilateral carotid occlusion preceded by permanent occlusion of the basilar artery. The findings were compared with free fatty acid and excitatory amino acid levels as well as with cations and water content in funnel-frozen brain specimens. One hour before occlusion, nine rats received 50% glucose (12 ml/kg i.p.) and five received 7% saline (12 ml/kg i.p.). Before ischemia, there were no differences in cerebral metabolite levels or pH between hyperglycemic rats and controls. During the carotid occlusion, the lactate/ N-acetylaspartate (Lac/NAA) peak ratio was higher (0.73–1.48 vs. 0.56–0.82; p < 0.05) and pH was lower (<6.0 vs. 6.45 ± 0.05; p < 0.05) in the hyperglycemic rats than in the controls. Phosphocreatine and adenosine triphosphate were totally depleted in both groups. Within 5–15 min after the onset of reperfusion, the Lac/NAA peak ratio increased further in all rats; however, only in extremely hyperglycemic rats (serum glucose > 960 mg/dl) did the lactic acidosis progress rather than recover later during reperfusion. Total free fatty acid and excitatory amino acid levels, but not cation concentration or water content, in brain correlated with serum glucose levels during and after ischemia and with NMR findings after 2 h of reperfusion. Although profound hyperglycemia (serum glucose of 970–1,650 mg/dl) appears to be associated with progression of anaerobic glycolysis and failure of cerebral energy metabolism to recover after temporary complete brain ischemia and with postischemic excitotoxic and lipolytic reactions thought to participate in delayed cellular injury, severe hyperglycemia (490–720 mg/dl) was associated with recovery of energy metabolism.

Significance of Plasma Free Fatty Acid and Amino Acid Profile in Obesity-related Heart Failure

2015 ◽  
Vol 21 (10) ◽  
pp. S195
Author(s):  
Takayuki Namba ◽  
Toyokazu Kimura ◽  
Shunpei Horii ◽  
Yasunaga Shiraishi ◽  
Atsushi Sato ◽  
...  
Keyword(s):  
Heart Failure ◽  
Fatty Acid ◽  
Amino Acid ◽  
Free Fatty Acid ◽  
Plasma Free Fatty Acid ◽  
Amino Acid Profile

Respiratory capacity and glycogen depletion in thyroid-deficient muscle

1980 ◽  
Vol 49 (1) ◽  
pp. 102-106 ◽  
Author(s):  
K. M. Baldwin ◽  
A. M. Hooker ◽  
R. E. Herrick ◽  
L. F. Schrader
Keyword(s):  
Skeletal Muscle ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Plasma Free Fatty Acid ◽  
Endurance Capacity ◽  
Glycogen Depletion ◽  
Respiratory Capacity ◽  
Rest And Exercise

This study was undertaken to determine the effects of propylthiouracil-induced thyroid deficiency on a) the capacity of muscle homogenates to oxidize [2-14C]pyruvate and [U-14C]palmitate and b) glycogen depletion during exercise in liver and in fast-oxidative-glycogenolytic (FOG), fast-glycogenolytic (FG), and slow-oxidative (SO) muscle. Relative to the rates for normal rats, oxidation with pyruvate was reduced by 53, 68, and 58%, and palmitate by 40, 50, and 48% in FOG, FG, and SO muscle, respectively (P less than 0.05). Normal rats ran longer than thyroid-deficient rats at 26.7 m/min (87 ± 8 vs. 37 ± 5 min). After 40 min of running (22 m/min), the amount of glycogen consumed in normal FOG, FG, and SO muscle and in liver amounted to only 23, 12, 66, and 52%, respectively, of that for their thyroid-deficient counterparts. Also, normal rats maintained higher plasma free fatty acid levels than thyroid-deficient rats during both rest and exercise (P less than 0.05). These findings suggest that thyroid deficiency causes a reduced potential for FFA utilization in skeletal muscle that enhances its consumption of glycogen, thereby limiting endurance capacity.

The Effects of Cold and Prostaglandin E1 on Lipid Mobilization in the Chicken

1971 ◽  
Vol 49 (5) ◽  
pp. 394-398 ◽  
Author(s):  
W. D. Wagner ◽  
R. A. Peterson ◽  
R. J. Cenedella
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Cold Exposure ◽  
Prostaglandin E1 ◽  
Plasma Free Fatty Acid ◽  
Prostaglandin E ◽  
Elevated Plasma ◽  
Lower Plasma ◽  
Lipid Mobilization ◽  
Plasma Ffa

Plasma free fatty acid (FFA) levels and the effects of prostaglandin E1 (PGE1) were studied in cold-acclimated and cold-exposed chickens and compared to controls. Chickens cold-acclimated at 4–7 or 8–11 °C for 4 weeks had significantly elevated plasma FFA when compared to the controls at 19–21 °C. Although PGE1 had no effect on the basal level of FFA of controls, a significantly lower plasma FFA was seen after injection of either 10 or 30 μg PGE1/kg in cold-acclimated chickens. Chickens cold-exposed to 2–3 °C for 4 h demonstrated significant elevations of plasma FFA when compared to controls. Only 30 μg PGE1/kg significantly depressed the plasma FFA in the cold-exposed birds. No inhibition of basal FFA release was seen in control animals. From these experiments, it is concluded that chickens mobilize FFA extensively under cold-exposure and that this stimulated lipolysis is inhibited by PGE1.

405 REGULATION OF PLASMA FREE FATTY ACID METABOLISM DURING INTENSE EXERCISE

1994 ◽  
Vol 26 (Supplement) ◽  
pp. S72
Author(s):  
C. A. Raguso ◽  
A. R. Coggan ◽  
L. S. Sidossis ◽  
A. Gastaldelli ◽  
R. R. Wolfe
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
Plasma Free Fatty Acid ◽  
Intense Exercise ◽  
Free Fatty Acid Metabolism
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