2007年8月
Soluble HLA-G is absent from human embryo cultures: a reassessment of sHLA-G detection methods.
Journal of reproductive immunology
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- 巻
- 75
- 号
- 1
- 開始ページ
- 11
- 終了ページ
- 22
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
In recent years, the number of patients receiving in vitro fertilization (IVF) has been increasing, though the rate of successful implantations has remained at 10-20%. A major goal of this procedure is to afford the ability to select embryos with the most potential for implantation and development. Previous studies claimed to have detected soluble HLA-G (sHLA-G) protein in culture supernatant from 2 to 3-day embryos using ELISA methods, and concluded that sHLA-G protein levels were associated with successful implantation. This result, if substantiated could provide an important tool for IVF. In this study, we have re-examined these experiments by attempting to detect sHLA-G in the medium from 2 to 3-day embryos (84 samples) and 4 to 6-day embryos (25 samples) in which a part of blastocyst has started to differentiate into trophoblasts. Using a highly specific and sensitive ELISA, no sHLA-G protein was detectable in any sample, despite the fact that 27 of the 109 samples were from successfully implanted embryos. These results indicate that 2-6-day embryos do not secrete sHLA-G detectable by ELISA, and therefore that sHLA-G in culture medium is not a useful for successful implantation at this stage of development.
- リンク情報
- ID情報
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- ISSN : 0165-0378
- PubMed ID : 17485119