JOURNAL ARTICLE

Effect of sphingosine-1-phosphate supplementation on follicular integrity of vitrified-warmed mouse ovarian grafts

Byung Chul Jee, Jung Ryeol Lee, Hyewon Youm, Chang Suk Suh, Seok Hyun Kim, Shin Yong Moon
European Journal of Obstetrics, Gynecology, and Reproductive Biology 2010, 152 (2): 176-80
20674140

OBJECTIVE: To investigates the effect of sphingosine-1-phosphate (S1P) supplementation on follicular integrity and apoptosis in vitrified-warmed mouse ovarian grafts.

STUDY DESIGN: Ovaries from 4-week-aged ICR mice were vitrified using a vitrification solution with or without 2 μM S1P. After warming, follicular normality was assessed by histological analysis and TUNEL assay. A part of ovaries vitrified with or without 2 μM S1P was transplanted, and 2 weeks later, gross and microscopic follicular morphology was assessed.

RESULTS: During vitrification and warming, inclusion of 2 μM S1P into the vitrification solution significantly raised the rate of morphologically intact follicles compared to controls (36.6% vs. 30.8%, p=0.047). This protective effect was profound especially in primordial follicles (45.5% vs. 34.6%, p=0.034). After transplantation of vitrified-warmed ovaries, the morphological integrity of primordial follicles was superior in the S1P-treated group (55.0% vs. 39.4%, p=0.035). The rates of non-apoptotic follicles (TUNEL-negative) were similar in the two groups in either non-transplanted or transplanted ovaries.

CONCLUSION: Inclusion of S1P in the vitrification solution during transplantation of vitrified-warmed ovary had a beneficial effect on preservation of the primordial follicular pool.

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