Comparative Analysis between HBV DNA by FQPCR and HBVm by ELISA
LIU Jinlu, LI Caiqing, LU Cheng, et al
The First Affiliated Hospital, Hebei North University, Zhangjiakou, 075000, Hebei China
【ABSTRACT】Objective: To investigate the relationship between HBVDNA
determined by the polymerase chain reaction (PCR) assay and HepatitisB
markers by ELISA method.Methods: The serum samples from 159 cases with 8
different positive models and 67 cases with all negative models were
tested by Fluorescence quantitative PCR assay (FQPCR) and also by ELISA
to compare the results.Results: Among the patients,the positive rate of
HBVDNA for the patients with positive HBsAg、HBcAB and HBeAe was
8983%;the positive rate of HBVDNA for the patients with positive
HBsAg、HBcAb and HBsAb was 2881%;the positive rate of HBVDNA for the
patients with positive HBsAb、HBcAb and HBeAb was 1666%;the positive rate
of HBV DNA for the patients with all negative HBVm was
1791%.Conclusione: HBVDNA determined by PCR assay is much more corrct
and sensitive than HBVmarkers by ELISA assay.FQPCR could be used as a
excellent monitor for the state of HBV irfection and its complication,
especially for the state of low complication.
【KEY WORDS】HBV; DNA; FQPCR; HBVm; ELISA
HBV DNA
熒光定量檢測是目前診斷乙型肝炎、判斷病毒復制和評價患者肝臟病變、預后及藥物療效的重要指標之一,目前國內外已普遍應用于臨床。為進一步了解HBV
DNA 檢測的實用價值及臨床意義,我們對226份血清標本,同時用ELISA
檢測HBsAg、HBsAb、HBeAg、HBeAb、HBcAb、及應用HBV DNA 熒光定量技術檢測HBV
DNA,對檢測結果及臨床應用作出評價。
從上述檢測結果可見,如果單憑HBeAg陽性或單憑 HBV DNA
陽性來判斷乙型肝炎患者的傳染性,將會漏掉10%左右具有傳染性乙型肝炎患者。因此我們認為應把HBeAg和 HBV DNA
結合起來,兩者只要有一項陽性就應考慮其具有傳染性。只有這樣才能把乙肝的預防、隔離及治療工作做徹底。
近來有文獻指出[3]:在部份HBsAg及HBeAb 陽性的乙肝患者血清中HBV
DNA也陽性。因此認為,抗HBe陽性只能說明病毒復制程度減低,而不能代表復制停止,病情有可能反復。我們在56例小三陽的血清中有17例HBV
DNA 陽性,陽性率2881%也反映以上觀點。與邱隆敏報道316%和雷學忠報道3235%近似[4]。所以我們認為在判斷乙型肝炎的預后,HBV
DNA比HBeAg更敏感而特異。當乙肝病毒血清標志物檢測結果為HBeAg陰轉,而HBeAb陽轉還不能樂觀,只有在HBeAg與HBV DNA
同時陰轉時,病情才可能是較隱定的康復期。因此把HBV DNA列入常規檢查,將更能準確、更全面地判斷急慢性乙型肝炎的預后。
從表1還可見:在67例全部陰性的血清中查出12例HBV DNA
陽性,陽性率1791%。明顯高于雷學忠667%報道[1]。ELISA檢測肝炎病毒是目前最常用方法之一,但影響因素頗多,如加樣時間,試劑平衡時間,樣本溶血程度等等。特別是低濃度樣本易導致假陰性結果,使弱陽性樣本漏檢。這對于篩選獻血者具有很大價值。因而我們認為在篩選獻血員時,最好能同時檢HBV
DNA。
3Chao HLY,Hussain M,LoK ASF.Different hepatitis B Virus genotypes are
associated with different mutation in the cove promoter and precore
regions during hepatitis B antigen
seroconversion[J].Hepatology,1999,29:976984