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Objective: To evaluate the effect of intracytoplasmic sperm injection (ICSI) using cryopreserved-thawed testicular spermatozoa with testicular fine needle aspiration (TEFNA) in patients with non-obstructive azoospermia.
Methods: Sixty-two patients underwent TEFNA. Mature testicular spermatozoa were found in 35 cases of patients and the testicular tissues were cryopreserved for later ICSI. Ovarian stimulation included a long protocol of GnRHa/FSH/hCG. Oocyte retrieval was performed under transvaginal ultrasound guidance, and ICSI conducted with cryopreserved-thawed testicular spermatozoa.
Results: A total of 35 couples underwent 35 ICSI cycles using cryopreserved-thawed testicular spermatozoa with testicular fine needle aspiration. The clinical pregnancy rate was 37.14% (13/35).
Conclusion: ICSI using cryopreserved-thawed testicular spermatozoa with testicular fine needle aspiration is a main and effective method in the treatment of non-obstructive azoospermia, which can avoid further testicular fine needle aspiration.
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Hum Reprod
August 2025
Biology of Reproduction-CECOS Laboratory, Rouen University Hospital, Team "Adrenal and Gonadal Pathophysiology", NorDIC, Inserm U1239, Univ Rouen Normandie, Rouen, France.
Study Question: Is it feasible to detect minimal residual disease (MRD) in cryopreserved testicular tissue (TT) from (pre)pubertal boys diagnosed with acute leukemia using molecular biology techniques?
Summary Answer: This pilot study demonstrates the feasibility of detecting MRD in cryopreserved TT, which could guide the choice of the safest techniques for fertility restoration.
What Is Known Already: Fertility preservation through testicular tissue freezing (TTF) is offered to (pre)pubertal boys undergoing highly gonadotoxic treatment. However, the risk of reintroducing leukemic cells during fertility restoration has not been adequately addressed.
Front Endocrinol (Lausanne)
September 2023
Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Background: Cryopreservation of immature testicular tissue (ITT) is currently the only option to preserve fertility of prepubertal patients. Autologous transplantation of ITT may not be safe or appropriate for all patients. Therefore, methods to mature ITT are needed.
View Article and Find Full Text PDFThe objective of the present experiment was to explore the role of NLRP3 inflammasome in the testicular tissue freezing, thawing and grafting; furthermore, the potential effect of a NLRP3 inhibitor on the function of testis transplant was explored. Tissues from male Wistar rats in pre-pubertal age were cryopreserved, thawed and auto-transplanted into the scrotum treated or not treated with the MCC950 (a NLRP3 inhibitor). After grafting, cryopreserved tissue was removed and analysed.
View Article and Find Full Text PDFHum Reprod
December 2019
Center for Reproductive Medicine, Research Institute Reproduction and Development, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
Study Question: Can the organ culture method be applied to both fresh and cryopreserved human (pre)pubertal testicular tissue as a strategy for in vitro spermatogenesis?
Summary Answer: Although induction of spermatogenesis was not achieved in vitro, testicular architecture, endocrine function and spermatogonial proliferation were maintained in both fresh and cryopreserved testicular tissues.
What Is Known Already: Cryopreservation of a testicular biopsy is increasingly offered as a fertility preservation strategy for prepubertal cancer patients. One of the proposed experimental approaches to restore fertility is the organ culture method, which, in the mouse model, successfully allows for in vitro development of spermatozoa from testicular biopsies.
Anim Biotechnol
April 2018
a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo, São Paulo , Brazil.
Taurine bulls are highly susceptible to heat stress, leading to increased oxidative stress (OS) and impaired sperm viability. Polyunsaturated fatty acids (PUFAs) supplementation can be an alternative to improve semen quality, which also results in more sperm susceptibility to lipid peroxidation. Moreover, this deleterious effect can be exacerbated in animals affected by heat stress.
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