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Dig Liver Dis ; 42(6): 441-5, 2010 Jun.
Article in English | MEDLINE | ID: mdl-19643684

ABSTRACT

AIM: We evaluated the etiology and risk factors for transient and persistently elevated aspartate and/or alanine aminotransferase levels in virus-free blood donors. INCLUSION CRITERIA: HBsAg/HBV-DNA and anti-HCV/HCV-RNA negative blood donors with elevated aspartate aminotransferase and/or alanine aminotransferase, observed in 5 blood transfusion centres in Italy from 2004 to 2005. Aspartate aminotransferase/alanine aminotransferase levels were measured at entry and every 2 months during a period of 6 months. RESULTS: 291 individuals were evaluated (144 with persistent and 147 with transient abnormal aminotransferases). High body mass index was the most frequent (75.5%) etiological factor and was more common in the persistent elevated levels group, compared to the transient elevated levels group (82.0% vs 65.3%; p<0.01). Excessive alcohol intake (>2 units/day) was reported in 23.6%, with no differences between the two groups. Instead, recent use of medication or paint exposure were most frequently associated with transient elevated levels than persistent elevated levels (61.6% vs 23.3% for drugs and 13.7% vs 4.3% for paint, p<0.001). Considering the participants with transient elevated levels as controls, the multivariate analysis showed that high body mass index was the only independent predictor of persistent elevated aminotransferase levels (OR=5.3; 95%CI=1.88-13.42 for those with body mass index>29.9). CONCLUSIONS: In virus-free blood donors, excessive body mass index is the most frequent etiological factor of abnormal aminotransferases and it is the sole risk factor associated with persistently elevated aminotransferases.


Subject(s)
Alanine Transaminase/blood , Aspartate Aminotransferases/blood , Blood Donors , Blood Transfusion/methods , Disease Transmission, Infectious/prevention & control , Hepatitis B, Chronic/enzymology , Hepatitis C, Chronic/enzymology , Adult , Body Mass Index , Female , Follow-Up Studies , Hepacivirus/genetics , Hepacivirus/immunology , Hepatitis B Surface Antigens/analysis , Hepatitis B virus/genetics , Hepatitis B virus/immunology , Hepatitis B, Chronic/transmission , Hepatitis B, Chronic/virology , Hepatitis C Antibodies/analysis , Hepatitis C, Chronic/transmission , Hepatitis C, Chronic/virology , Humans , Male , RNA, Viral/analysis , Retrospective Studies , Risk Factors
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