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  • Title: DNA damage in children with obstructive adenotonsillar hypertrophy.
    Author: Yoruk O, Alp H, Yuksel S, Bakan E.
    Journal: J Craniofac Surg; 2014 Nov; 25(6):2156-9. PubMed ID: 25377974.
    Abstract:
    The objective of this prospective, controlled study was to evaluate oxidative DNA damage in children with obstructive adenotonsillar hypertrophy. This study included 30 patients with obstructive adenotonsillar hypertrophy (male/female ratio, 3:2; age range, 3-9 y) scheduled to undergo tonsillectomy and adenoidectomy and 25 control subjects of similar age and sex with no adenotonsillar disease or airway obstruction. Urine and blood samples were obtained from each child for 8-hydroxy 2-deoxyguanosine (8-OhdG) and malondialdehyde (MDA) concentrations. There were significant differences in leukocyte (3.28 [0.69/10] vs 0.70 [0.15/10] dG) and urine 8-OhdG (8.22 [2.27/10] vs 5.26 [1.3/10] dG) levels in patients with obstructive adenotonsillar hypertrophy and healthy subjects (P < 0.001 for both). Plasma (2.98 [1.31] vs 1.14 [0.64] μM) and urine (1.77 [0.84] vs 0.56 [0.32] μM) MDA levels were also different (P < 0.001 for both). There were positive correlations between 8-OhdG in leukocyte DNA and plasma MDA (r = 0.648, P < 0.001) and between levels of urine 8-OhdG excretion and urine MDA (r = 0.588, P < 0.001). The DNA damage in children with adenotonsillar hypertrophy should be kept in mind, but further studies must be done with larger patient groups.
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