November 20, 2024
Metabolic demands for L-Carnitine Can be divided into 3 categories Primary Secondary Functional shortage age dependent condition dependent Muscle (lamb) - 2.03 Muscle (beef) - 0.61 Muscle (pig) - 0.27 Heart (cattle) - 0.23 Muscle (poultry)- 0.09 Milk (cow) - 0.026 Liver (lamb) - 0.022 Salmon - 0.0006 Rice - 0.018 Eggs and peas - 0.008 Potatoes - 0.0003 Carrots/spinach - 0.000 Carnitine content of foods (mg/g) adopted Heinz Loster 2003/Rigault 2007 Infants (3 kg) Skeletal muscle 1.98 Liver 0.55 Heart 0.77 Plasma males 0.026 females 0.023 Adults (70 kg) Skeletal muscle 3.96 Liver 2.90 Heart 4.80 Brain 0.30 Total Carnitine, humans (umol/ml) L-Carnitine in Pet Food Varies by type of ingredients foods of animal origin blended with other ingredients processing such boiling, soaked, washing freezing and/or drying Not understood is bioavailability of natural forms of L-Carnitine It matters: bound vs free L-Carnitine -Oxidation + + L-Carnitine L-Carnitine Krebs-Cycle Respiration CoA CoA CoA CoA CoA CoA Fatty acid + + + L-Carnitine L-Carnitine Energy (ATP) L-Carnitine physiology and its role in energy production Cell Mitochondria Cytosol Glucose Pyruvate Acetyl CoA OAA TCA Citrate -kg L-Carnitine supplementation can influence total metabolism Pyruvate Carboxylase Glycogen -oxidation Fat + L-Carnitine Protein Amino Acids BCAADH (leucine, iso,) Roles of L-Carnitine in the body Convert fat into energy
These data suggest that administration of levocarnitine to healthy elderly subjects may result in reduction of total fat mass, and increase of total muscle mass, may be reduce fatigue and serum lipids
Obesity: is weight gain after smoking cessation an important concern
whereas at 13 weeks, enhanced brain cell damage was suggested by reduced fission and autophagosome markers, as well as increased apoptosis and DNA fragmentation markers, which were partially reversed by maternal L-Carnitine supplementation
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