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Study on cryopreservation of mouse single seminiferous tubule. Cryobiology 2021; 104:42-46. [PMID: 34813856 DOI: 10.1016/j.cryobiol.2021.11.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 12/06/2022]
Abstract
Cryopreservation of single seminiferous tubule is significant for fertility preservation, especially for male patients with cryptorchidism, Y-chromosome deletion and orchitis. However, there are few studies on cryopreservation of single seminiferous tubule. This study proposes several improved strategies for cryopreservation of single seminiferous tubule in mice. First, single seminiferous tubule was cryopreserved with modified slow freezing and vitrification methods. The results showed that the apoptosis negative rates of spermatogenic cells in single seminiferous tubule with modified slow freezing method were significantly higher than vitrification with plastic slide. Then, plastic slide and two metal vitrification carriers with high thermal conductivity, copper mesh and aluminum foil, were used to vitrify single seminiferous tubule. The metal carriers could improve the outcome of vitrification than plastic slide. The apoptosis negative rates of spermatogenic cells in the aluminum foil group was significantly higher than that in the copper mesh group. Finally, single seminiferous tubule was perfused with CPAs by micro-injection technique and vitrified. The results of cryo-microscopy experiments showed that the ice crystals formed inside the injected seminiferous tubule was reduced during the cooling process, the apoptosis negative rate of spermatocytes, spermatids and Sertoli cells were significantly higher than that of the non-injection group, indicating that the injection technique can effectively improve the effect of vitrification. This study has potential clinical value for in-vitro culture of spermatogonial stem cells and autologous testicular tissue grafting in patients with azoospermia.
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Takae S, Lee JR, Mahajan N, Wiweko B, Sukcharoen N, Novero V, Anazodo AC, Gook D, Tzeng CR, Doo AK, Li W, Le CTM, Di W, Chian RC, Kim SH, Suzuki N. Fertility Preservation for Child and Adolescent Cancer Patients in Asian Countries. Front Endocrinol (Lausanne) 2019; 10:655. [PMID: 31681163 PMCID: PMC6804405 DOI: 10.3389/fendo.2019.00655] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/09/2019] [Indexed: 12/31/2022] Open
Abstract
Background: At present, fertility is one of the main concerns of young cancer patients. Following this trend, "fertility preservation (FP)" has been established and has become a new field of reproductive medicine. However, FP for child and adolescent (C-A) cancer patients is still developing, even in advanced countries. The aim of the present study was to assess the barriers to FP for C-A patients by investigating the current status of FP for C-A patients in Asian countries, which just have started FP activities. Method: A questionnaire survey of founding members of the Asian Society for Fertility Preservation (ASFP) was conducted in November 2018. Main findings: Of the 14 countries, 11 country representatives replied to this survey. FP for C-A patients is still developing in Asian countries, even in Australia, Japan, and Korea, which have organizations or academic societies specialized for FP. In all countries that replied to the present survey, the patients can receive embryo cryopreservation (EC), oocyte cryopreservation (OC), and sperm cryopreservation (SC) as FP. Compared with ovarian tissue cryopreservation (OTC), testicular tissue cryopreservation (TTC) is an uncommon FP treatment because of its still extremely experimental status (7 of 11 countries provide it). Most Asian countries can provide FP for C-A patients in terms of medical technology, but most have factors inhibiting to promote FP for C-A patients, due to lack of sufficient experience and an established system promoting FP for C-A patients. "Don't know how to provide FP treatment for C-A" is a major barrier. Also, low recognition in society and among medical staff is still a particularly major issue. There is also a problem with cooperative frameworks with pediatric departments. To achieve high-quality FP for C-A patients, a multidisciplinary approach is vital, but, according to the present study, few paramedical staff can participate in FP for C-A patients in Asia. Only Australia and Korea provide FP information by video and specific resources. Conclusion: The present study demonstrated the developing status of FP for C-A patients in Asian countries. More intensive consideration and discussion are needed to provide FP in Asian societies based on the local cultural and religious needs of patients.
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Affiliation(s)
- Seido Takae
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
- *Correspondence: Seido Takae
| | - Jung Ryeol Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seoul, South Korea
| | | | - Budi Wiweko
- Division of Reproductive Endocrionolgy and Infertility, Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Indonesia, Depok, Indonesia
| | - Nares Sukcharoen
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bankok, Thailand
| | - Virgilio Novero
- St. Luke's Medical Center, Quezon City, Philippines
- Section of Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Philippines Manila, Manila, Philippines
| | - Antoinette Catherine Anazodo
- Kids Cancer Centre and Sydney Youth Cancer Service, Sydney Children's Hospital, Randwick, NSW, Australia
- Nelune Comprehensive Cancer Centre, Prince of Wales Hospital, Randwick, NSW, Australia
- School of Women's and Children's Health, University of New South Wales, Kensington, NSW, Australia
| | - Debra Gook
- Melbourne IVF, Melbourne, VIC, Australia
| | - Chii-Ruey Tzeng
- Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | | | - Wen Li
- Reproductive Medicine Center, Second Military Medical University, Changzheng Hospital, Shanghai, China
| | | | - Wen Di
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ri-Cheng Chian
- Center for Reproductive Medicine, Tenth People's Hospital of Tongji University, Shanghai, China
| | - Seok Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Nao Suzuki
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
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