Lee H S, Yoon J H, Kim C Y
Department of Internal Medicine, Seoul National University College of Medicine, Korea.
Korean J Intern Med. 1995 Jul;10(2):103-7. doi: 10.3904/kjim.1995.10.2.103.
The present study was conducted to evaluate the prognostic significance of the absence of serum HBV DNA by polymerase chain reaction (PCR) after spontaneous HBeAg/anti-HBe seroconversion and concurrent or subsequent biochemical remission.
We prospectively investigated the reactivation rates in 28 chronic hepatitis B patients according to the positive or negative serum HBV DNA test by PCR. The sera drawn at a mean period of 4.4 months after normalization of alanine aminotransferase (ALT) were analyzed by PCR-Southern blot hybridization to detect HBV DNA, and then the patients were divided into two groups according to the presence (n = 14) or absence (n = 14) of HBV DNA in the sera.
The cumulative reactivation rates in patients with HBV DNA in sera were 43%, 57%, 57%, 57% and 57% at the end of 1st, 2nd, 3rd, 4th and 5th year after normalization of ALT, respectively, and those in patients without demonstrable HBV DNA were 50%, 66%, 74%, 74% and 83%, respectively; thus, the difference in the cumulative reactivation rates between patients with and without serum HBV DNA was not statistically significant (p = 0.79), and irrespective of the status of HBV DNA in sera by PCR, reactivations occurred very rarely after 2 years of a sustained remission.
We conclude that the seroconversion to anti-HBe accompanied by disappearance of serum HBV DNA even by PCR does not necessarily suggest a sustained remission of chronic hepatitis B.
本研究旨在评估在HBeAg/抗-HBe自发血清学转换以及同时或随后出现生化缓解后,通过聚合酶链反应(PCR)检测血清中未检出乙肝病毒(HBV)DNA的预后意义。
我们根据PCR检测血清HBV DNA呈阳性或阴性,对28例慢性乙型肝炎患者的再激活率进行了前瞻性研究。在丙氨酸氨基转移酶(ALT)恢复正常后平均4.4个月采集的血清,通过PCR- Southern印迹杂交分析以检测HBV DNA,然后根据血清中HBV DNA的存在情况(n = 14)或不存在情况(n = 14)将患者分为两组。
血清中存在HBV DNA的患者在ALT恢复正常后第1、2、3、4和5年末的累积再激活率分别为43%、57%、57%、57%和57%,而未检测到HBV DNA的患者分别为50%、66%、74%、74%和83%;因此,血清中存在和不存在HBV DNA的患者之间的累积再激活率差异无统计学意义(p = 0.79),并且无论PCR检测血清中HBV DNA的状态如何,在持续缓解2年后很少发生再激活。
我们得出结论,即使通过PCR检测血清HBV DNA消失且伴有抗-HBe血清学转换,也不一定意味着慢性乙型肝炎持续缓解。