Journal of Capital Medical University ›› 2013, Vol. 34 ›› Issue (4): 506-511.doi: 10.3969/j.issn.1006-7795.2013.04.006

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Influence of programmable cryopreservation and in vitro culture on follicular viability and estradiol secretion of human ovarian tissue

TIAN Xuanxuan1, RUAN Xiangyan1, Montag Markus2, Liebenthron Jana3, Alfred O. Mueck4   

  1. 1. Department of Gynecological Endocrinology, Beijing Obsterics and Gynecology Hospital, Capital Medical University, Beijing 100026, China;
    2. Reproductive Biology Laboratory, Women's Hospital, University of Heidelberg, Heidelberg 69115, Germany;
    3. Ovarian Tissue Cryobank, Women's Hospital, University of Bonn, Bonn 53012, Germany;
    4. Department of Endocrinology, University Women's Hospital of Tuebingen, Tuebingen D-72076, Germany
  • Received:2013-06-10 Online:2013-08-21 Published:2013-07-20
  • Supported by:

    This study was supported by Beijing Municipality Health Technology High-level Talent(2009-3-52) and China Administration of Foreign Experts Affairs "YinZhi" Project(20121100017, 20131100006).

Abstract:

Objective To investigate the influence of programmable cryopreservation and in vitro culture on follicular viability and estradiol secretion of human ovarian tissue. Methods Pieces of human ovarian cortex were prepared, the specimens were round in shape and were about 1 mm×1 mm×1 mm, and were divided into fresh group, frozen group, fresh culturing group and freezing-thawing culturing group. Pieces of human ovarian cortex were frozen with the method of programmable cryopreservation and cultured in vitro before freezing and after thawing. The level of estradiol in medium was measured with electro-chemiluminescence immunoassay. Healthy follicles stained with Clacein AM were conducted under fluorescence microscopy after digestion for all ovarian tissues. Results The number of follicles and their proportions in freezing group had no significant difference from that in fresh group(P>0.05). Estradiol was secreted continuously throughout in-vitro culture in both of fresh tissues and freezing-thawing tissues. The level of estradiol in freezing-thawing culturing group was lower than that in fresh culturing group in the first 2 d(P<0.05). The difference of the estradiol level was not significant(P>0.05) after 2 d. The number of primordial and primary follicles and their proportions had no significant difference after in vitro culture(P>0.05); the number of secondary follicles and its proportion were higher in tissues cultured in vitro for 14 days(P<0.05). Conclusion The method of programmable cryopreservation can maintain the viability of preantral follicles and E2 secretion of ovarian tissues cultured in vitro. Secondary follicles have greater potential of development than that of primordial and primary follicles of ovarian tissues cultured in vitro.

Key words: ovarian tissue, programmable cryopreservation, in vitro culture

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