GLYCOGEN CONTENT OF SKELETAL MUSCLE IN PATIENTS WITH RENAL FAILURE

2009 ◽  
Vol 186 (1-6) ◽  
pp. 177-181 ◽  
Author(s):  
Jonas Bergström ◽  
Eric Hultman
Keyword(s):  
Skeletal Muscle ◽  
Renal Failure ◽  
Glycogen Content

scholarly journals Skeletal muscle dysfunction in chronic renal failure: effects of exercise

2006 ◽  
Vol 290 (4) ◽  
pp. F753-F761 ◽  
Author(s):  
Gregory R. Adams ◽  
Nosratola D. Vaziri
Keyword(s):  
Skeletal Muscle ◽  
Renal Failure ◽  
Exercise Capacity ◽  
Muscle Function ◽  
Chronic Illnesses ◽  
Treatment Modalities ◽  
Muscle Dysfunction ◽  
Obstructive Pulmonary Disease ◽  
Skeletal Muscle Dysfunction

A number of chronic illnesses such as renal failure (CRF), obstructive pulmonary disease, and congestive heart failure result in a significant decrease in exercise tolerance. There is an increasing awareness that prescribed exercise, designed to restore some level of physical performance and quality of life, can be beneficial in these conditions. In CRF patients, muscle function can be affected by a number of direct and indirect mechanisms caused by renal disease as well as various treatment modalities. The aims of this review are twofold: first, to briefly discuss the mechanisms by which CRF negatively impacts skeletal muscle and, therefore, exercise capacity, and, second, to discuss the available data on the effects of programmed exercise on muscle function, exercise capacity, and various other parameters in CRF.

scholarly journals Endurance training reduces the contraction-induced interleukin-6 mRNA expression in human skeletal muscle

2004 ◽  
Vol 287 (6) ◽  
pp. E1189-E1194 ◽  
Author(s):  
Christian P. Fischer ◽  
Peter Plomgaard ◽  
Anne K. Hansen ◽  
Henriette Pilegaard ◽  
Bengt Saltin ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Mrna Expression ◽  
Muscle Glycogen ◽  
Human Skeletal Muscle ◽  
Acute Exercise ◽  
Glycogen Content ◽  
Knee Extensor ◽  
Exercise Induced ◽  
Response To Exercise ◽  
Resting Muscle

Contracting skeletal muscle expresses large amounts of IL-6. Because 1) IL-6 mRNA expression in contracting skeletal muscle is enhanced by low muscle glycogen content, and 2) IL-6 increases lipolysis and oxidation of fatty acids, we hypothesized that regular exercise training, associated with increased levels of resting muscle glycogen and enhanced capacity to oxidize fatty acids, would lead to a less-pronounced increase of skeletal muscle IL-6 mRNA in response to acute exercise. Thus, before and after 10 wk of knee extensor endurance training, skeletal muscle IL-6 mRNA expression was determined in young healthy men ( n = 7) in response to 3 h of dynamic knee extensor exercise, using the same relative workload. Maximal power output, time to exhaustion during submaximal exercise, resting muscle glycogen content, and citrate synthase and 3-hydroxyacyl-CoA dehydrogenase enzyme activity were all significantly enhanced by training. IL-6 mRNA expression in resting skeletal muscle did not change in response to training. However, although absolute workload during acute exercise was 44% higher ( P < 0.05) after the training period, skeletal muscle IL-6 mRNA content increased 76-fold ( P < 0.05) in response to exercise before the training period, but only 8-fold ( P < 0.05, relative to rest and pretraining) in response to exercise after training. Furthermore, the exercise-induced increase of plasma IL-6 ( P < 0.05, pre- and posttraining) was not higher after training despite higher absolute work intensity. In conclusion, the magnitude of the exercise-induced IL-6 mRNA expression in contracting human skeletal muscle was markedly reduced by 10 wk of training.

Insulin promotes glycogen synthesis in the absence of GSK3 phosphorylation in skeletal muscle

2008 ◽  
Vol 294 (1) ◽  
pp. E28-E35 ◽  
Author(s):  
Michale Bouskila ◽  
Michael F. Hirshman ◽  
Jørgen Jensen ◽  
Laurie J. Goodyear ◽  
Kei Sakamoto
Keyword(s):  
Skeletal Muscle ◽  
Glucose Uptake ◽  
Muscle Glycogen ◽  
Glycogen Content ◽  
Glycogen Synthase ◽  
Glycogen Synthesis ◽  
Wild Type ◽  
Muscle Glycogen Synthesis ◽  
Mutant Forms

Insulin promotes dephosphorylation and activation of glycogen synthase (GS) by inactivating glycogen synthase kinase (GSK) 3 through phosphorylation. Insulin also promotes glucose uptake and glucose 6-phosphate (G-6- P) production, which allosterically activates GS. The relative importance of these two regulatory mechanisms in the activation of GS in vivo is unknown. The aim of this study was to investigate if dephosphorylation of GS mediated via GSK3 is required for normal glycogen synthesis in skeletal muscle with insulin. We employed GSK3 knockin mice in which wild-type GSK3α and -β genes are replaced with mutant forms (GSK3α/βS21A/S21A/S9A/S9A), which are nonresponsive to insulin. Although insulin failed to promote dephosphorylation and activation of GS in GSK3α/βS21A/S21A/S9A/S9Amice, glycogen content in different muscles from these mice was similar compared with wild-type mice. Basal and epinephrine-stimulated activity of muscle glycogen phosphorylase was comparable between wild-type and GSK3 knockin mice. Incubation of isolated soleus muscle in Krebs buffer containing 5.5 mM glucose in the presence or absence of insulin revealed that the levels of G-6- P, the rate of [14C]glucose incorporation into glycogen, and an increase in total glycogen content were similar between wild-type and GSK3 knockin mice. Injection of glucose containing 2-deoxy-[3H]glucose and [14C]glucose also resulted in similar rates of muscle glucose uptake and glycogen synthesis in vivo between wild-type and GSK3 knockin mice. These results suggest that insulin-mediated inhibition of GSK3 is not a rate-limiting step in muscle glycogen synthesis in mice. This suggests that allosteric regulation of GS by G-6- P may play a key role in insulin-stimulated muscle glycogen synthesis in vivo.

Plasma and Skeletal Muscle Free Aminoacids in Acute Renal Failure

1987 ◽  
pp. 93-98
Author(s):  
Almerico Novarini ◽  
Isabella Simoni ◽  
Rossana Colla ◽  
Antonio Trifirò ◽  
Achille Guariglia ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Renal Failure ◽  
Acute Renal Failure ◽  
Free Aminoacids

Administration of a Mixture of Fungal Glucosidases to a Patient with Type II Glycogenosis (Pompe's Disease)

PEDIATRICS ◽  
1968 ◽  
Vol 42 (4) ◽  
pp. 672-676
Author(s):  
Ronald M. Lauer ◽  
Thelma Mascarinas ◽  
Antonio S. Racela ◽  
Antoni M. Diehl ◽  
Barbara Illingworth Brown
Keyword(s):  
Skeletal Muscle ◽  
Enzyme Assay ◽  
Glycogen Content ◽  
Hydrolytic Enzymes ◽  
Type Ii ◽  
Electron Microscopic ◽  
Pompe’S Disease ◽  
Pompe's Disease ◽  
Type Ii Glycogenosis

A case of Type II glycogenosis (Pompe's disease) has been studied by histochemical, electron microscopic, and biochemical techniques. These studies have been made prior to and after the intramuscular administration for 1 week of a mixture of hydrolytic enzymes containing both α-1,4- and α-1,6-glucosidase activities. Electron photomicrographs of the liver before enzyme administration showed glycogen to be located both within and outside of membrane-limited vacuoles. No change in this distribution could be detected in tissue removed by biopsy after enzyme administration. This impression was confirmed by the determination of glycogen content which was shown to be unchanged. Nevertheless, the liver was found by enzyme assay to contain the administered enzyme. Leucocytes isolated from blood taken 4 hours after the last enzyme injection were also shown to contain the parenterally administered glucosidases. In skeletal muscle glycogen was present chiefly as extrasaccular deposits which were unchanged in appearance by enzyme administration. No glucosidase activity was demonstrable in the skeletal muscle after such a treatment. Myocardium sectioned after autopsy had major deposits of glycogen in extrasaccular areas.

Alcohol Related Non-traumatic Rhabdomyolysis and Compartment Syndrome

2007 ◽  
Vol 6 (1) ◽  
pp. 33-34
Author(s):  
JPL Ong ◽  
◽  
LA Thomas ◽  
Keyword(s):  
Skeletal Muscle ◽  
Renal Failure ◽  
Acute Renal Failure ◽  
Lower Extremity ◽  
Compartment Syndrome ◽  
Early Recognition ◽  
Clinical Entity ◽  
Threatening Condition ◽  
Life Threatening ◽  
Renal Support

Rhabdomyolysis is a serious and life-threatening condition in which skeletal muscle is damaged, commonly resulting in acute renal failure. The causes of this clinical entity can be traumatic and non-traumatic. In the latter group, alcohol is the commonest cause. This report describes the case of a 25 year old man who presented with rhabdomyolysis leading to acute renal failure after an alcohol binge. He presented with painful legs and lower extremity compartment syndrome. The patient recovered with surgical fasciotomy and renal support. This case illustrates the importance of early recognition and treatment of alcohol related non-traumatic rhabdomyolysis and compartment syndrome.

Effects of maternal exercise on liver and skeletal muscle glycogen storage in pregnant rats

1991 ◽  
Vol 71 (3) ◽  
pp. 1015-1019 ◽  
Author(s):  
M. F. Mottola ◽  
P. D. Christopher
Keyword(s):  
Skeletal Muscle ◽  
Muscle Glycogen ◽  
Glycogen Content ◽  
Liver Glycogen ◽  
Glycogen Storage ◽  
Treadmill Running ◽  
Control Group ◽  
Skeletal Muscle Glycogen ◽  
Maternal Exercise ◽  
White Gastrocnemius

To examine the effects of maternal exercise on liver and skeletal muscle glycogen storage, female Sprague-Dawley rats were randomly divided into control, nonpregnant runner, pregnant nonrunning control, pregnant runner, and prepregnant exercised control groups. The exercise consisted of treadmill running at 30 m/min on a 10 degree incline for 60 min, 5 days/wk. Pregnancy alone, on day 20 of gestation, decreased maternal liver glycogen content and increased red and white gastrocnemius muscle glycogen storage above control values (P less than 0.05). In contrast, exercise in nonpregnant animals augmented liver glycogen storage and also increased red and white gastrocnemius glycogen content (P less than 0.05). By combining exercise and pregnancy, the decrease in liver glycogen storage in the pregnant nonexercised condition was prevented in the pregnant runner group and more glycogen was stored in both the red and white portions of the gastrocnemius than all other groups (P less than 0.05). Fetal body weight was greatest (P less than 0.05) in the pregnant runner group and lowest (P less than 0.05) in the prepregnant exercise control group. These results demonstrate that chronic maternal exercise may change maternal glycogen storage patterns in the liver and skeletal muscle with some alteration in fetal outcome.

Progressive increase in human skeletal muscle AMPKα2 activity and ACC phosphorylation during exercise

2002 ◽  
Vol 282 (3) ◽  
pp. E688-E694 ◽  
Author(s):  
T. J. Stephens ◽  
Z.-P. Chen ◽  
B. J. Canny ◽  
B. J. Michell ◽  
B. E. Kemp ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Muscle Glycogen ◽  
Human Skeletal Muscle ◽  
Glycogen Content ◽  
Vastus Lateralis ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise ◽  
Western Blots ◽  
Muscle Glycogen Content ◽  
Muscle Creatine

The effect of prolonged moderate-intensity exercise on human skeletal muscle AMP-activated protein kinase (AMPK)α1 and -α2 activity and acetyl-CoA carboxylase (ACCβ) and neuronal nitric oxide synthase (nNOSμ) phosphorylation was investigated. Seven active healthy individuals cycled for 30 min at a workload requiring 62.8 ± 1.3% of peak O2consumption (V˙o 2 peak) with muscle biopsies obtained from the vastus lateralis at rest and at 5 and 30 min of exercise. AMPKα1 activity was not altered by exercise; however, AMPKα2 activity was significantly ( P < 0.05) elevated after 5 min (∼2-fold), and further elevated ( P < 0.05) after 30 min (∼3-fold) of exercise. ACCβ phosphorylation was increased ( P < 0.05) after 5 min (∼18-fold compared with rest) and increased ( P< 0.05) further after 30 min of exercise (∼36-fold compared with rest). Increases in AMPKα2 activity were significantly correlated with both increases in ACCβ phosphorylation and reductions in muscle glycogen content. Fat oxidation tended ( P = 0.058) to increase progressively during exercise. Muscle creatine phosphate was lower ( P < 0.05), and muscle creatine, calculated free AMP, and free AMP-to-ATP ratio were higher ( P < 0.05) at both 5 and 30 min of exercise compared with those at rest. At 30 min of exercise, the values of these metabolites were not significantly different from those at 5 min of exercise. Phosphorylation of nNOSμ was variable, and despite the mean doubling with exercise, statistically significance was not achieved ( P = 0.304). Western blots indicated that AMPKα2 was associated with both nNOSμ and ACCβ consistent with them both being substrates of AMPKα2 in vivo. In conclusion, AMPKα2 activity and ACCβ phosphorylation increase progressively during moderate exercise at ∼60% of V˙o 2 peak in humans, with these responses more closely coupled to muscle glycogen content than muscle AMP/ATP ratio.

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