Original Article

COMPARATIVE ASSESSMENT OF DIAGNOSTIC ACCURACY OF SERUM SIALIC ACID AND SEVERAL CONVENTIONAL BIOMARKERS IN ALCOHOL-DEPENDENT INDIVIDUALS

  • Gülin GÜVENDIK
  • Nuri IDIZ
  • I. Ipek BOSGELMEZ
  • Tülin SÖYLEMEZOGLU
  • Yildirim B. DOGAN
  • Inci Ö. ILHAN

Received Date: 09.11.2005 Accepted Date: 09.02.2005 Turk J Pharm Sci 2006;3(1):19-30

Abstract Identification of alcoholism is crucial in preventing adverse health effects and social consequences of excessive alcohol consumption. The aim of this study was to determine concentrations of sialic acid (SA) in serum samples of alcoholics and to compare its diagnostic value with some conventional markers. Samples were obtained from alcohol-dependents (n=25) and healthy controls (n=23). To assess the possible effect of amount of alcohol consumed, alcohol-dependent subjects were divided into three subgroups [300g ethanol per day (n=7)]. Additionally, alcohol-dependents were also split into two subgroups according to presence (n=11) or absence (n=14) of hepatosteatosis. As evaluated according to the amount of alcohol consumption, SA levels were elevated in the 200-300 and >300g ethanol per day subgroups (p300g ethanol per day subgroup (64%, 57.1%, and 85.7%, respectively). SA may be of value in identifying alcohol-use-disorder in presence and absence of hepatosteatosis, as well as reflecting the amount of alcohol consumed. Özet Asiri alkol tüketiminin saglik üzerindeki olumsuz etkileri ve sosyal sonuçlarinin önlenmesi için, alkolizmin belirlenmesi zorunludur. Bu çalismanin amaci, alkoliklerden alinan serum örneklerinde sialik asit (SA) konsantrasyonlarinin belirlenmesi ve diagnostik degerinin bazi geleneksel biyolojik göstergelerle karsilastirilmasidir. Örnekler, alkol bagimlilari (n=25) ve saglikli kontrol bireylerden alinmistir (n=23). Tüketilen alkol miktarinin olasi etkisini degerlendirmek için, alkol bagimlilari üç alt gruba ayrilmistir [günde 300g alkol tüketen (n=7)]. Bunun yani sira, alkol bagimlilari, hepatosteatosis görülen (n=11) ve görülmeyen (n=14) iki alt grupta da degerlendirilmistir. Alkol tüketimine göre degerlendirildiginde, SA düzeyleri, günde 200300 ve >300g alkol tüketen alt gruplarda (p300 g alkol tüketen gruplarda, diger göstergelerden daha hassas bulunmustur (sirasiyla, %64, %57.1 ve %85.7) . Tüketilen alkol miktarini yansitmasinin yani sira, SA, hepatosteatosis görülen ve görülmeyen bireylerde alkol kullanim bozuklugunun tanimlanmasinda yararli olabilir.

Keywords: Alcohol dependency, sialic acid, ROC curve, sensitivity, specificity, biomarker