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Journal of Zhejiang University SCIENCE B 2011 Vol.12 No.1 P.32-39


A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats

Author(s):  Xue-ling He, Hai-lin Yin, Jiang Wu, Ke Zhang, Yan Liu, Tao Yuan, Hai-lin Rao, Liang Li, Guang Yang, Xue-mei Zhang

Affiliation(s):  Institute of Biomedical Engineering, West China Center of Medical Sciences, Sichuan University, Chengdu 610041, China, Laboratory Animal Center of Sichuan University, Chengdu 610041, China, Chengdu Institute of Biological Products, China National Biotic Group (CNBG), Chengdu 610023, China

Corresponding email(s):   hxlscu@163.com, xmzhang@tom.com

Key Words:  Polyethylene glycol, Recombinant human interleukin-6, Pharmacokinetics, Rat

Xue-ling He, Hai-lin Yin, Jiang Wu, Ke Zhang, Yan Liu, Tao Yuan, Hai-lin Rao, Liang Li, Guang Yang, Xue-mei Zhang. A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats[J]. Journal of Zhejiang University Science B, 2011, 12(1): 32-39.

@article{title="A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats",
author="Xue-ling He, Hai-lin Yin, Jiang Wu, Ke Zhang, Yan Liu, Tao Yuan, Hai-lin Rao, Liang Li, Guang Yang, Xue-mei Zhang",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats
%A Xue-ling He
%A Hai-lin Yin
%A Jiang Wu
%A Ke Zhang
%A Yan Liu
%A Tao Yuan
%A Hai-lin Rao
%A Liang Li
%A Guang Yang
%A Xue-mei Zhang
%J Journal of Zhejiang University SCIENCE B
%V 12
%N 1
%P 32-39
%@ 1673-1581
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1000085

T1 - A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats
A1 - Xue-ling He
A1 - Hai-lin Yin
A1 - Jiang Wu
A1 - Ke Zhang
A1 - Yan Liu
A1 - Tao Yuan
A1 - Hai-lin Rao
A1 - Liang Li
A1 - Guang Yang
A1 - Xue-mei Zhang
J0 - Journal of Zhejiang University Science B
VL - 12
IS - 1
SP - 32
EP - 39
%@ 1673-1581
Y1 - 2011
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B1000085

Radiation therapy has been widely applied in cancer treatment. However, it often causes thrombocytopenia (deficiency of white blood cells) as an adverse effect. recombinant human interleukin-6 (rhIL-6) has been found to be a very effective way against this thrombocytopenia, but IL-6 has low stability in blood, which reduces its efficacy. To increases the stability and half-life of rhIL-6, it was modified by polyethylene glycol (PEG). The pharmacokinetics and the tissue distribution of PEG-rhIL-6 labeled with 125I were examined after subcutaneous injection in rats. The pharmacokinetic pattern of PEG-rhIL-6 was defined with linear-kinetics, and we fitted a one-compartment model with half-lives of 10.44–11.37 h (absorption, t1/2Ka) and 19.77–21.53 h (elimination, t1/2Ke), and peak concentrations at 20.51–21.96 h (tpeak) in rats. Half-lives and tpeak of PEG-rhIL-6 were longer than those of rhIL-6 previously reported. In the present study, for deposition of PEG-rhIL-6 in rats, the tissue distribution examination showed that blood was the major organ involved, rather than liver. However, as to the elimination of PEG-rhIL-6, the major organ was the kidney. The excretion fraction of the injection dose recovered from urine was 23.32% at 192 h after subcutaneous administration. Less than 6% of PEG-rhIL-6 was eliminated via the feces at 192 h. These results indicate that PEG-rhIL-6 is a good candidate drug formulation for patients with cancer.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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