Alpha interferon combined with ribavirin potentiates proliferative suppression but not cytokine production in mitogenically stimulated human lymphocytes.

Alpha interferon combined with ribavirin potentiates proliferative suppression but not cytokine production in mitogenically stimulated human lymphocytes.
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α干扰素与利巴韦林联合可增强增殖抑制作用,但不会增强有丝分裂刺激的人淋巴细胞中细胞因子的产生。

DOI:
10.1016/s0166-3542(00)00120-0
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发表时间:
2000
期刊:
影响因子:
7.6
通讯作者:
Kimball,PM
Kimball,PM
中科院分区:
医学2区
文献类型:
--
作者:
Shiffman,ML;Verbeke,SB;Kimball,PM

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在接受α干扰素(IFN)和利巴韦林(RBV)联合治疗的丙型肝炎患者中观察到的临床结果改善被认为是免疫调节和病毒抑制的结果。然而,药物组合对淋巴细胞活性的影响尚不清楚。本研究评估了 IFN 和 RBV 单独或联合使用对 PHA 刺激淋巴细胞后增殖、细胞周期敏感性和细胞因子产生的影响。包括两种干扰素制剂:干扰素-a-2b (IFN-2b) 和干扰素-a-con-1 (CIFN)。每种药物在较宽浓度范围内的滴定显示出剂量依赖性增殖抑制,且无细胞毒性。 IFN-2b (105-107IU/ml) 抑制增殖57-99% (P<0.001),CIFN (1.5-150 ng/ml) 抑制增殖41-74% (P<0.001),RBV (0.5-50 μg/ml) 抑制增殖10-94% (P<0.001)。等效线图分析表明,IFN-2b 和 RBV 对增殖抑制的相互作用是相加的。相比之下,CIFN 和 RBV 之间的相互作用呈弱拮抗作用。两种干扰素的增殖抑制均受到细胞周期限制。在 PHA 刺激开始时(G0/G1)添加的 IFN-2b 和 CIFN 与 24 小时后(S 期)相比,分别抑制增殖 50% 和 5%(P<0.05)。 IFN 抵抗的发生与细胞表面 IFN 受体减少 50% (P<0.05) 相关。相比之下,在 PHA 激活过程中的任何时间添加 RBV 都会引起同等的增殖抑制 (P=NS)。 PHA 刺激 24 小时后的细胞因子分泌表明,IFN-2b 与 CIFN 相比,IL2、TNF 和 γ IFN 的分泌分别比对照水平增加 4.5、4.1 和 8.3 倍(P<0.005),而 1、1.9 和 1.9 倍(P<0.05)。 IFN 都不影响 IL10 的分泌。单独使用 RBV 以及与 IFN 联合使用,对细胞因子表达没有影响 (P=NS)。这项研究确定了几种潜在机制,通过这些机制,IFN 和 RBV 的组合可能比单独使用任何一种药物对细胞免疫产生更有效的影响,并表明不同的 IFN 制剂可能对淋巴细胞反应产生不同的影响。
The improved clinical outcome observed among patients with hepatitis C treated with the combination of alpha interferon (IFN) and ribavirin (RBV) is presumed to result from immunomodulation and viral inhibition. However, the impact of the drug combination upon lymphocyte activity is unknown. The present study evaluated the effects of IFN and RBV, singly and in combination, upon proliferation, cell cycle sensitivity and cytokine elaboration following PHA stimulation of lymphocytes. Two formulations of IFN, interferon-a-2b (IFN-2b) and interferon-a-con-1 (CIFN), were included. Titration of each drug over a wide range of concentrations showed dose dependent proliferative suppression without cytotoxicity. Proliferation was suppressed 57–99% (P<0.001) by IFN-2b (105–107IU/ml), 41–74% (P<0.001) by CIFN (1.5–150 ng/ml), and 10–94% (P<0.001) by RBV (0.5–50 μg/ml). Isobologram analysis showed that the interaction between IFN-2b and RBV on proliferative suppression was additive. In contrast, the interaction between CIFN and RBV was weakly antagonistic. Proliferative suppression by both the IFNs was cell cycle restricted. IFN-2b and CIFN added at the onset of PHA stimulation (G0/G1) versus 24 h later (S phase) inhibited proliferation by 50 versus 5%, respectively (P<0.05). The onset of IFN resistance correlated with a 50% reduction (P<0.05) in IFN receptors on the cell surface. In contrast, RBV caused equivalent proliferative suppression (P=NS) when added at any time during PHA activation. Cytokine secretion after 24 h of PHA stimulation showed that IFN-2b versus CIFN increased the secretion of IL2, TNF and gamma IFN by 4.5-, 4.1- and 8.3-fold (P<0.005) versus 1-, 1.9- and 1.9-fold (P<0.05), respectively, above control levels. Neither IFN affected IL10 secretion. RBV, singly and in combination with IFN, had no impact on cytokine expression (P=NS). This study identifies several potential mechanisms by which the combination of IFN and RBV may exert a more potent effect upon cellular immunity than either agent alone and shows that different formulations of IFN may have non-identical effects upon lymphocyte responses.
利巴韦林对中性粒细胞功能的影响。
DOI: 10.1097/00000441-198806000-00002
发表时间: 1988
期刊: The American journal of the medical sciences
影响因子: --
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DOI: --
发表时间: 1989
影响因子: 0.9
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期刊: Gastroenterology
影响因子: 29.4
作者:
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发表时间: 1998-11-19
影响因子: 158.5
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DOI: 10.1002/hep.1840130302
发表时间: 1991
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影响因子: 13.5
作者:
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