Research report| Volume 117, ISSUE 1, P119-123, September 1995

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Lymphocyte T subset counts in children with elevated low-density lipoprotein cholesterol levels

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      The aim of this study was to determine blood lymphocyte T subset counts in children with elevated levels of low-density lipoprotein cholesterol. We studied 107 children, ages 2.0 to 15.9 years, from 79 families who were referred to our Lipid Research Clinic because total cholesterol serum levels higher than 200 mg/dl had been detected in at least one child. At the time of diagnosis we analyzed serum lipoprotein profile and blood lymphocyte T subsets (CD3, CD4 and CD8). Children were classified according to LDL-C levels into three groups: (1) normal, if levels were between the 5th and 75th percentiles (50 and 125 mg/dl, respectively); (2) at moderate risk, if levels were between the 75th and 95th percentiles (125 and 150 mg/dl, respectively); and (3) at high risk, if levels were above the 95th percentile (150 mg/dl). In children aged 2.0 to 6.9 years, all lymphocyte T subset counts were higher in the high risk group than in the normal group (P < 0.05 and P < 0.01). In children aged 11.0 to 15.9 years, the CD4 subset count was also significantly higher in the high risk group than in the other two groups (P < 0.05 and P < 0.01). These results are in agreement with pathologic findings in the atheromatous plaque.


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