Dynamics of hepatitis C viremia after plasma exchange

被引:18
作者
Manzin, A
Candela, M
Solforosi, L
Gabrielli, A
Clementi, M
机构
[1] Univ Ancona, Inst Microbiol, I-60100 Ancona, Italy
[2] Univ Ancona, Ist Clin Med, I-60128 Ancona, Italy
[3] Univ Trieste, Dipartimento Sci Biomed, I-34127 Trieste, Italy
关键词
doubling time; HCV; viremia; plasma exchange;
D O I
10.1016/S0168-8278(99)80027-0
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Background/Aims: The dynamics of hepatitis C viremia after perturbation by plasma exchange was addressed in two infected patients with symptomatic cryoglobulinemia, This approach may offer an alternative to studying patients treated with antivirals in order to understand the dynamics of hepatitis C virion exchange among different compartments in vivo. Methods: Plasma exchange sessions were conducted every 24 h for 3 consecutive days; hepatitis C virus RNA copy numbers were evaluated in sequential plasma samples collected before (-24, -12, -8, and 0 h) and at short intervals (at 1, 3, 6, and 12 h) after each session, Results: After each plasma exchange session viremia dropped by 45.3-93.3% in patient 1, and by 60.5-72.7% in patient 2, paralleling (or, in some cases, exceeding) the amount of fluid exchanged. No mobilization of cell-free hepatitis C virus from extra-vascular sites was documented during the 2-h plasma exchange. The dynamics of hepatitis C viremia after each procedure was also evaluated, Pre-plasma exchange levels mere restored within 3-6 h in both patients, and the mean doubling times of residual viremia were 4.6 h and 4.5 h for patients 1 and 2, respectively, Conclusions: The results, in agreement with recent evidence indicating that the turnover of hepatitis C virions is a highly dynamic process, extend previous evaluations by documenting that large amounts of newly-produced virions are introduced into the vascular compartment within a few hours of the drop in hepatitis C viremia caused by plasma exchange.
引用
收藏
页码:389 / 393
页数:5
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