Seoul National University · Medicine
Professor Jung Ryeol Lee's research lab specializes in reproductive medicine and fertility preservation, with a primary focus on optimizing ovarian tissue cryopreservation and transplantation techniques. The lab investigates protective agents such as antifreeze proteins (AFPs) and bioactive factors like angiopoietin-2 and VEGF to mitigate ischemic damage during xenotransplantation and improve graft survival. Their work also explores hormonal regulation of anti-Müllerian hormone (AMH) as a predictor of ovarian response, contributing to personalized fertility preservation strategies. The lab integrates experimental models, including xenotransplantation in nude mice, to evaluate novel approaches for enhancing fertility outcomes after cryopreservation.
Figures are computed from collected data and may differ slightly.
This study was supported by a grant of the Korea Healthcare technology R&D Project, Ministry of Health & Welfare, Republic of Korea (HI12C0055). The authors have no conflict of interest to declare.
A supplementation with high concentrations of AFPs had protective effects on follicle preservation during OT vitrification-warming procedures. The group treated with LeIBP was protected most effectively. The beneficial effects of LeIBP were also observed after autotransplantation of vitrified-warmed OT. Further studies are necessary to determine the exact mechanism of these protective effects.
The results of the present study suggest that changes in the hormonal milieu during stimulation and after the LH surge may affect AMH secretion. Serum AMH levels during COH are good markers to predict ovarian response, but the baseline serum level seems to be the most predictive marker.
Based on this study, purse-string skin closure after a loop ileostomy reversal showed comparable outcomes, in terms of wound infection rates, to those of linear skin closure. Thus, purse-string skin closure could be a good alternative to the conventional linear closure.
The results of the present study suggest that supplementing AFP in the vitrification solution has beneficial effects on the survival of ovarian tissue during cryopreservation and transplantation.
Cryopreservation and transplantation of ovarian tissue (OT) represents a method for fertility preservation. However, as the transplantation is performed without vessel anastomosis, unavoidable ischemic damage occurs. To reduce this ischemic damage and improve outcomes after transplantation, we used two kind of angiogenic factors, angiopoietin-2 (ang-2) and vascular endothelial growth factor (VEGF). Fresh or vitrified-warmed bovine OTs were prepared for xenotransplantation (XT). Fresh OTs were im
1. The effect of morphine on the histamine content of the mouse brain has been investigated. The changes in the brain histamine level have been related to morphine-induced analgesia and morphine-induced changes in locomotor activity. 2. With doses of morphine between 1 and 5 mg/kg there was a significant increase in histamine levels. The time required to produce a maximal rise in the brain histamine level with 5 mg/kg of morphine was 15 min. 3. There was a significant decrease in brain histamine
The purpose of this study was to evaluate the outcomes of various methods of multifetal pregnancy reduction (MFPR) and to determine which method produces better outcomes. One hundred and forty-eight patients with multiple pregnancies resulting from assisted reproduction programs and underwent MFPR were included. According to the use of potassium chloride (KCl), patients were divided into 'KCl', and 'non- KCl' groups, and based on gestational age at the time of procedures, patients were divided i
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