Article

Carnitine levels in patients with chronic rheumatic heart disease.

Erciyes University Medical Faculty, Department of Biochemistry, Kayseri, Türkiye.
Clinical Biochemistry (impact factor: 2.08). 01/1998; 30(8):643-5. pp.643-5
Source: PubMed

ABSTRACT Carnitine, a small aminoacid derivative plays a major role in fatty acid oxidation. Myocardial carnitine deficiency may cause malfunction of the heart. Rheumatic valvular heart disease can be associated with myocardial dysfunction. We have investigated myocardial and plasma-free carnitine levels in patients with chronic rheumatic heart disease.
Eleven patients with chronic rheumatic heart disease requiring valve replacement were selected for study. Ten patients with no cardiac failure, myocardial wall motion abnormalities and myocardial infarction and for whom coronary bypass surgery was planned were selected as the control group. Carnitine levels of myocardial tissue obtained from the right atrium and plasma during the operation were evaluated using spectrophotometric method. Myocardial-free carnitine levels expressed as mumol/g (dry weight) were determined according to Ceberblad and Lindstedt technique.
Myocardial-free carnitine levels in patients were found to be 0.72 +/- 0.37 mumol/g (dry weight) in comparison with 1.44 +/- 1.03 mumol/g (dry weight) in the control group. Myocardial-free carnitine levels in patients were statistically decreased when compared to control group. Plasma-free carnitine levels in patients were 80.91 +/- 28.22 mumol/L and 89.52 +/- 48.21 mumol/L in the control group, respectively. There was no significant difference between plasma-free carnitine levels of the groups.
In our study, myocardial-free carnitine levels were decreased while plasma-free carnitine levels were normal in patient with chronic rheumatic heart disease.

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Keywords

cardiac failure
 
Carnitine
 
Carnitine levels
 
chronic rheumatic heart disease
 
control group
 
dry weight
 
Lindstedt technique
 
major role
 
Myocardial carnitine deficiency
 
myocardial dysfunction
 
myocardial infarction
 
myocardial tissue
 
myocardial wall motion abnormalities
 
myocardial-free carnitine levels
 
plasma
 
plasma-free carnitine levels
 
Rheumatic valvular heart disease
 
small aminoacid derivative
 
spectrophotometric method
 
valve replacement