OBJECTIVES L-carnitine and dehydro-epiandrosterone (DHEA) independently promote mitochondrial energy metabolism. We therefore wondered if an age-related deficiency of L-carnitine or DHEA may account for the declining energy metabolism associated with age. METHODS we evaluated serum levels of L-carnitine and the sulphated derivative of DHEA (DHEAS) in cross-sectional study of 216 healthy adult...

Radioisotopic analyses for carnitine content were done on infant formula, formulas for tube feeding, food supplements, and chemically defined diets. The carnitine content of the diets depend on the protein source. Products whose main protein source is soy protein isolate, casein, or egg white solids contain 4 nmole carnitine per milliliter or less, with most of them containing undetectable amou...

BACKGROUND Ninety-five percent of the body carnitine pool resides in skeletal muscle where it plays a vital role in fuel metabolism. However, vegetarians obtain negligible amounts of carnitine from their diet. OBJECTIVE We tested the hypothesis that muscle carnitine uptake is elevated in vegetarians compared with that in nonvegetarians to maintain a normal tissue carnitine content. DESIGN F...

Objective: Diabetes causes free radical production, oxidative stress and alterations in mitochondrial enzymes and apoptosis. The purpose of this study was to investigate the effect of aerobic exercise and consumption of L-carnitine on BCL2 and some mitochondrial enzymes of the kidney in diabetic rats. Materials and Methods: In this experimental study, 45 male wistar rats (200-300 gr) were simp...

dilated cardiomyopathy (dcm) is accompanied by myocytes and connective tissue changes. matrix metalloproteinases (mmps) play important roles in cardiac remodeling. it seems that the gelatinases (mmp-2 and mmp-9) are effective enzymes in cardiomyopathy. dilated cardiomyopathy was confirmed in 22 dogs (patient group) including 11 female and 11 male by clinical examination, auscultation, thoracic ...

The analysis of the balance elastase (MMP-2, MMP-9) and TIMP-4 was performed in order to determine their involvement pathogenesis NEC. A progressive duration NEC with sepsis is accompanied by increased serum concentrations MMP-9, MMP-2 TIMP-4. Increases MMP-2>503 ng/ml, MMP-9>812 ng/ml TIMP-4>1404 can be regarded as statistically significant predictors fatal outcome proposed method for...

1. The optical rotatory dispersion of carnitine acetyltransferase is altered in the presence of l-carnitine or acetyl-l-carnitine. These changes, which include an increase in the reduced mean residue rotation at 233nm. ([M'](233)), suggest that substrate binding causes the enzyme to unfold. 2. CoA and acetyl-CoA have no immediate effect on [M'](233) and CoA has no effect on the change in this p...