Are isolated anti-HBc blood donors in high risk group? The detection of HBV DNA in isolated anti-HBc cases with nucleic acid amplification test (NAT) based on transcription-mediated amplification (TMA) and HBV discrimination

作者：Altunay Husnu; Kosan Erdogan; Birinci Ilhan; Aksoy Armagan; Kirali Kaan; Saribas Suat; Aslan Mustafa; Yuksel Pelin; Alan Esra; Yenen Osman Sadi; Kocazeybek Bekir^*

来源：Transfusion and Apheresis Science, 2010, 43(3): 265-268.

DOI：10.1016/j.transci.2010.09.012

• Isolated Anti-HBc
• Nucleic acid amplification test (NAT)

Aim: Hepatitis B virus (HBV) can be transmitted by blood transfusions even so using serological tests having high sensitivity and specificity. We aimed to detect HBV DNA in isolated Anti-HBc donors and show if they have transfusion risk or not.
Method: We investigated Anti-Hbc and Anti-HBs in serum samples of 12858 HBs-Ag negative blood donors who were applied to the Turkish Redcrescent between June 2007 and October 2008 by the Micro ELISA kit (Hepanostica ultra HBsAg, Bio Meriux, France). Anti-HBc and Anti-Hbs positive cases were omitted. We used Procleix ultrio (Chiro, USA) test kit (Chiron Tigris automated instrument was used) based TMA (Transcription-Mediated Amplification) for NAT study in Anti-HBc positive and Anti-HBs negative plasma samples. The discrimination of HBV in NAT positive samples were performed by Procleix Discrimination (Chiro, USA) test.
Results: 2748 (21.4%) Anti-HBc seropositivity were detected in 12852 HBsAg() serum samples. 23.5% Anti-HBs negativity was detected in 2748 Anti-HBc positive serum samples. On the other hand, 5.1% isolated Anti-Hbc positivity [HBsAg(-), Anti-HBc(+), Anti-HBs(-)] were detected in 12852 HBsAg(-) serum samples. 0.091% and 0.047% HBV-DNA positivity were detected in isolated Anti-HBc positive plasma samples and HBsAg(-) plasma samples, respectively.
Conclusion: As a result, even we have detected one HBV transmission in every 2142 blood transfusion by HBsAg screening tests: we suggest that it is not necessary to add additional tests to detect isolated Anti-HBc for routine purposes in Blood Banking. The reasons are higher negativity rates (99%) of isolated Anti-HBc serum samples and the rejection of blood donors with Anti-HBc positivity.

• 出版日期2010-12