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Aponte PM, Gutierrez-Reinoso MA, Garcia-Herreros M. Bridging the Gap: Animal Models in Next-Generation Reproductive Technologies for Male Fertility Preservation. Life (Basel) 2023; 14:17. [PMID: 38276265 PMCID: PMC10820126 DOI: 10.3390/life14010017] [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: 09/05/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
This review aims to explore advanced reproductive technologies for male fertility preservation, underscoring the essential role that animal models have played in shaping these techniques through historical contexts and into modern applications. Rising infertility concerns have become more prevalent in human populations recently. The surge in male fertility issues has prompted advanced reproductive technologies, with animal models playing a pivotal role in their evolution. Historically, animal models have aided our understanding in the field, from early reproductive basic research to developing techniques like artificial insemination, multiple ovulation, and in vitro fertilization. The contemporary landscape of male fertility preservation encompasses techniques such as sperm cryopreservation, testicular sperm extraction, and intracytoplasmic sperm injection, among others. The relevance of animal models will undoubtedly bridge the gap between traditional methods and revolutionary next-generation reproductive techniques, fortifying our collective efforts in enhancing male fertility preservation strategies. While we possess extensive knowledge about spermatogenesis and its regulation, largely thanks to insights from animal models that paved the way for human infertility treatments, a pressing need remains to further understand specific infertility issues unique to humans. The primary aim of this review is to provide a comprehensive analysis of how animal models have influenced the development and refinement of advanced reproductive technologies for male fertility preservation, and to assess their future potential in bridging the gap between current practices and cutting-edge fertility techniques, particularly in addressing unique human male factor infertility.
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Affiliation(s)
- Pedro M. Aponte
- Colegio de Ciencias Biológicas y Ambientales (COCIBA), Universidad San Francisco de Quito (USFQ), Quito 170901, Ecuador
- Instituto de Investigaciones en Biomedicina “One-Health”, Universidad San Francisco de Quito (USFQ), Campus Cumbayá, Quito 170901, Ecuador
| | - Miguel A. Gutierrez-Reinoso
- Facultad de Ciencias Agropecuarias y Recursos Naturales, Carrera de Medicina Veterinaria, Universidad Técnica de Cotopaxi (UTC), Latacunga 050150, Ecuador;
- Laboratorio de Biotecnología Animal, Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción (UdeC), Chillán 3780000, Chile
| | - Manuel Garcia-Herreros
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), 2005-048 Santarém, Portugal
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Karaaslan M, Yilmaz M, Ordu M, Sirin ME. Could Testicular Tissue Be a New Arena for the Holmium Laser? Cureus 2023; 15:e45234. [PMID: 37720129 PMCID: PMC10501419 DOI: 10.7759/cureus.45234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2023] [Indexed: 09/19/2023] Open
Abstract
Introduction We aimed to observe the effects of holmium:yttrium-aluminum-garnet (Ho:YAG) laser on testicular tissue. Methods An ex vivo experiment was conducted using calf testicles. A 100 W laser generator with broad-spectrum settings of 10-80 W, 20-40 Hz, and 0.5-2 J, with a medium pulse duration, was tested. The laser effects on testicular tissues with and without the tunica layer were evaluated histopathologically by calculating the incision depth (ID), vaporization area (VA), coagulation area (CA), and total laser area (TLA=VA+CA) of the specimens. Results A total of 48 experiments were conducted. In testicular tissue without a tunica layer, the highest mean ID was determined at 1 J-20 Hz (0.247±0.0208 mm) and with a tunica layer at 2 J-40 Hz (2.673±0.032 mm). In the testicular tissue without a tunica layer, the highest mean VA was determined at 1.5 J-40 Hz (0.029±0.0016 mm2) and in tissue with a tunica at 2 J-40 Hz (6.173±0.114 mm2). The highest mean TLA in tissue without a tunica was detected at 2 J-20 Hz (0.038±0.0008 mm2) and in tissue with a tunica at 2 J-40 Hz (7.292±0.07 mm2). The mean ID, VA, CA, and TLA values of all the power outputs used were found to be statistically significantly higher in the testicular tissue with the tunica layer than in that without it (p<0.001). Conclusion The Ho:YAG laser has different effects on testicular tissue with and without a tunica layer. In testicular tissue without a tunica, the laser's effect was minimal on the surrounding tissue, especially in terms of the ID, VA, and TLA. This minimal effect of the laser can be an advantage in testicular surgery procedures such as testis-sparing surgery (TSS) or testicular sperm extraction (TESE).
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Affiliation(s)
| | | | - Melike Ordu
- Pathology, Faculty of Medicine, Aksaray University, Aksaray, TUR
| | - Mehmet Emin Sirin
- Urology, University of Health Sciences, Ankara Bilkent City Hospital, Ankara, TUR
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Zaki AKA, Aldahmashi FS, Madboli AENA, Attia KA, Almulhim FS, Albarrak SM. Therapeutic approaches for anti-sperm-antibodies in the testicular sperm aspiration rat model. Vet World 2023; 16:296-308. [PMID: 37042009 PMCID: PMC10082712 DOI: 10.14202/vetworld.2023.296-308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/09/2023] [Indexed: 02/17/2023] Open
Abstract
Background and Aim: Anti-sperm antibodies (ASAs) treatment continued to be neglected. This study aimed to generate ASAs using the testicular sperm aspiration (TSA) rat model, which allowed for investigation of four distinct therapeutic approaches to find potential treatments for ASAs.
Materials and Methods: Adult Wistar albino male rats were divided into six equal groups (n = 12). The negative control group underwent scrotal sac surgery without having their testicles punctured. Punctures were made in the remaining 5 groups, with one group left untreated to serve as the positive control group. The remaining 4 groups were treated with either dexamethasone (DEX), azathioprine (AZA), frankincense, or anti-ASAs secondary antibodies. For 10 weeks, serum samples were collected every 2 weeks for specific quantification of ASAs. Testis and epididymis tissues were collected for histopathological analysis.
Results: The ASAs concentrations of the positive controls were significantly higher (p ≤ 0.001) than their negative control counterparts during the examined weeks. However, The ASAs indices (%) differed according to the treatment type. While the ASAs indices at the 2nd and 4th weeks in the AZA-treated group were significantly reduced compared to the positive control group (p ≤ 0.001), no significant differences were observed at any of the sample collection week for the DEX-treated rats. The ASAs indices were significantly decreased only at weeks 6 and 8 of treatment in the frankincense-treated group (p ≤ 0.001). In the secondary antibodies-treated group, the antibody indices were significantly decreased in all weeks except for samples collected at week 4 (p ≤ 0.001). The testosterone levels reverted to normal only in TSA rats treated with either Frankincense or secondary antibodies, as they were significantly higher than the positive controls (p ≤ 0.05). Tissue samples from the secondary antibody-treated rats showed a generally normal histological appearance.
Conclusion: This study tried to offer realistic therapy suggestions; however, caution should be applied when extrapolating findings from experimental models to meet clinical requirements.
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Affiliation(s)
- Abdel-Kader A. Zaki
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia; Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Fahad S. Aldahmashi
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia; Ministry of Environment, Water and Agriculture, Qassim Region, Saudi Arabia
| | - Abd El-Nasser A. Madboli
- Department of Animal Reproduction and Artificial Insemination, National Research Center, Veterinary Research Institute, Giza, Egypt
| | - Kamal A. Attia
- Department of Biology, Al-Jammoum University College, Umm-Alqura University, Makkah, Saudi Arabia
| | - Fahad S. Almulhim
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia; Ministry of Environment, Water and Agriculture, Qassim Region, Saudi Arabia
| | - Saleh M. Albarrak
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
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Li B, Duan C, Yao X, Wu X, Xu H. Re: Christian Fuglesang S. Jensen, Dana A. Ohl, Mikkel Fode, et al. Microdissection Testicular Sperm Extraction Versus Multiple Needle-pass Percutaneous Testicular Sperm Aspiration in Men with Nonobstructive Azoospermia: A Randomized Clinical Trial. Eur Urol. In press. https://doi.org/10.1016/j.eururo.2022.04.030. Eur Urol 2022; 82:e149-e150. [PMID: 36088180 DOI: 10.1016/j.eururo.2022.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 11/04/2022]
Affiliation(s)
- Bo Li
- Department and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Duan
- Department and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangyang Yao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaoliang Wu
- Department and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Xu
- Cancer Precision Diagnosis and Treatment and Translational Medicine, Hubei Engineering Research Center, Wuhan, China; Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.
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Shah R, Gupta C. Advances in sperm retrieval techniques in azoospermic men: A systematic review. Arab J Urol 2018; 16:125-131. [PMID: 29713543 PMCID: PMC5922005 DOI: 10.1016/j.aju.2017.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 11/15/2017] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To evaluate various methods of operative sperm retrieval in men with non-obstructive azoospermia (NOA) and to determine the optimal surgical approach in terms of effectiveness, morbidity, and complications. MATERIALS AND METHODS PubMed and Cochrane databases were searched to identify five recent reviews and meta-analyses evaluating outcomes for sperm retrieval in men with NOA. RESULTS AND CONCLUSION Micro-TESE is the most efficient method for retrieving sperm but requires special expertise and can be traumatic for the testes. Conventional biopsies are twice more likely to retrieve sperm than fine-needle aspiration. Testicular aspiration performed by multiple passes into the testis is traumatic and is not efficient for sperm retrieval. Needle-aspiration biopsy and open real-time testicular mapping by the single seminiferous tubule technique can offer less traumatic methods for sperm retrieval, which can be tried before proceeding to micro-TESE. The first attempt at sperm retrieval is the best chance the patient has and should combine various techniques sequentially to give the highest chance of success with the least morbidity.
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Key Words
- (N)OA, (non-)obstructive azoospermia
- (O)FNA, (open) fine-needle aspiration
- (c) (micro-) (n) TESE, (conventional) (microdissection) (needle) testicular sperm extraction
- AZF(a)(b)(c), azoospermia factor (a) (b) (c)
- ICSI, intracytoplasmic sperm injection
- IVF, in vitro fertilisation
- MeSH, medical subject heading
- NAB, needle aspiration biopsy;
- Non-obstructive azoospermia
- Operative sperm retrieval
- PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analysis
- SRR, sperm retrieval rate
- SSSSR, single-session staged sperm retrieval
- SST, single seminiferous tubule
- TESA, testicular sperm aspiration
- Testicular failure
- Testicular sperm extraction
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Affiliation(s)
- Rupin Shah
- Lilavati Hospital and Research Centre, Bandra Reclamation, Bandra west, Mumbai, India
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