Journal
MEDICAL HYPOTHESES
Volume 58, Issue 6, Pages 516-518Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1054/mehy.2001.1496
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Estrogen is well known to promote liver regeneration after partial hepatectomy. Administration of estradiol prior to partial hepatectomy also induces increased activity of DNA synthesis. Endogenous aromatase plays a key role in the conversion of testosterone to estradiol. The aromatase activity was induced by IL-6, which is a key factor for liver regeneration. It has been reported that IL-6 interacts with gp80/130 receptor and regulates the STAT1/3 pathway to induce DNA synthesis in hepatocyte. The IL-6 induced aromatase activity results in increased serum estradiol level. This corresponded well with observation that estradiol was elevated after partial hepatectomy. Therefore, it is very likely that estradiol and IL-6 synergize in stimulation of hepatocyte proliferation during liver regeneration. We propose that a short-term estradiol treatment may be beneficial for patients with poor liver function after hepatectomy. (C) 2002 Published by Elsevier Science Ltd.
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