Estrogen and selective estrogen receptor modulators regulate vascular endothelial growth factor and soluble vascular endothelial growth factor receptor 1 in human endometrial stromal cells

Hidetaka Okada, Akihiro Tsutsumi, Miyuki Imai, Tatsuya Nakajima, Katsuhiko Yasuda, Hideharu Kanzaki
In: Fertility and Sterility · 2009 · vol. 93(8) , pp. 2680–2686 · doi:10.1016/j.fertnstert.2009.08.056 · W2010965653
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17beta-estradiol and 4-hydroxytamoxifen increased vascular endothelial growth factor and decreased soluble vascular endothelial growth factor receptor 1 in human endometrial stromal cells, while raloxifene had no significant effect.

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Abstract

ObjectiveTo determine whether 17beta-estradiol (E(2)) and selective estrogen receptor modulators can regulate vascular endothelial growth factor (VEGF) and soluble VEGF receptor 1 (sVEGFR-1) as a VEGF antagonist in human endometrial stromal cells (ESCs).DesignIn vitro experiment.SettingResearch laboratory at Kansai Medical University.Patient(s)Sixteen patients undergoing hysterectomy for benign reasons.Intervention(s)The ESCs were cultured with E(2), 4-hydroxytamoxifen (OHT), and raloxifene.Main outcome measure(s)The VEGF and sVEGFR-1 messenger RNA (mRNA) levels in ESCs were determined using quantitative real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Free (unbound) VEGF and sVEGFR-1 protein levels from ESCs were measured using ELISA kits.Result(s)The E(2) significantly induced VEGF mRNA levels, whereas E2 caused a significant decrease in sVEGFR-1 messenger RNA (mRNA) levels. The E(2) or OHT significantly increased the VEGF production levels and attenuated the sVEGFR-1 production compared with control, but raloxifene had no significant effect. The decrease in levels of free VEGF was proportional to the increase in sVEGFR-1 levels in the culture media of ESCs.Conclusion(s)The E(2) or OHT stimulates VEGF production and concurrently attenuates sVEGFR-1 production in ESCs. This consequential increase in VEGF:sVEGFR-1 ratio might enhance the biological effects of VEGF on the angiogenic environment in human endometrium.

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