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  • Spermatozoïdes Testiculaires
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Peut-on optimiser la congélation des spermatozoïdes testiculaires? L’expérience du Centre Hospitalier de Poissy Saint-Germain

Optimizing testicular spermatozoa freezing: Poissy hospital experience

An Erratum to this article was published on 01 March 2003

Resume

Il n’existe pas de facteur prédictif fiable permettant de pronostiquer avec certitude la présence ou l’absence de spermatozoïdes testiculaires chez les hommes atteints d’azoospermie sécrétoire. La proportion de biopsies testiculaires négatives chez ces patients est élevée, et il est donc préférable de pas pratiquer de manière synchrone la biopsie testiculaire et le cycle d’ICSI. Nous présentons ici notre expérience concernant 74 biopsies testiculaires effectuées pour azoospermie sécrétoire, ayant donné lieu à 60 cycles d’ICSI (25 couples). Les résultats sont comparés à ceux obtenus lors de 81 cycles d’ICSI effectués avec du sperme testiculaire ou épididymaire congelé lors d’indications excrétoires. Les spermatozoïdes sont congelés en petits volumes (micro-gouttes), ceci facilitant leur recherche après décongélation, et permettant d’augmenter le nombre de paillettes congelées. II est alors possible de procéder à plusieurs cycles d’ICSI pour une même biopsie testiculaire, y compris lorsque le tissu testiculaire est très pauvre en spermatozoïdes. Les résultats obtenus sont comparable dans les deux groupes, avec un taux de grossesse clinique par transfert embryonnaire de 18% dans les indications sécrétoires et de 26% dans les indications excrétoires. La réalisation systématique de la biopsie testiculaire et du cycle d’ICSI de façon asynchrone préserve les chances de grossesse du couple quel que soit l’étiologie de l’azoospermie, et permet une meilleur gestion de la prise en charge des couples concernés.

Abstract

50% or more of non-obstructive azoospermic men have no spermatozoa in their testicular tissue, and no non-invasive predictor of spermatogenesis is yet available. For this reason, we therefore performed all TESE (74 TESE for non-obstructive azoospermia and 37 TESE for obstructive azoospermia) prior to initiating ovarian stimulation. 34% (25/74) of TESE performed for non-obstructive azoospermia were successful. Spermatozoa were retrieved in 100% of cases of obstructive azoospermia. When TESE were positive, spermatozoa were frozen in 25–50 μl micro-droplets (several straws). 60 ICSI cycles (25 couples) were treated for non obstructive azoospermia. The clinical pregnancy rate per ICSI cycle was 18%, and the implantation rate per embryo transferred was 9.2%. 81 ICSI cycles (37 couples) were treated for obstructive azoospermia. The fertilization rate was 54%, and embryo transfer was performed in 89% (72/81) of cycles. The clinical pregnancy rate per embryo ICSI cycle was 26%, and the implantation rate per embryo transferred was 16%. This management of azoospermic patients, including TESE and multiple testicular tissue freezing in micro-droplets prior to ovarian stimulation, avoids ova pick-up cancellation and multiple TESE, as several ICSI can be performed after a single TESE. Our results show that this micro-technique for freezing testicular tissue is effective not only for obstructive azoospermia, but also for non-obstructive azoospermia when only very few spermatozoa can be extracted from the testis.

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Correspondence to Jacqueline Selva.

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An erratum to this article is available at http://dx.doi.org/10.1007/BF03034417.

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Guthauser, B., Bailly, M., Albert, M. et al. Peut-on optimiser la congélation des spermatozoïdes testiculaires? L’expérience du Centre Hospitalier de Poissy Saint-Germain. Androl. 12, 342–346 (2002). https://doi.org/10.1007/BF03034651

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