1
|
Bojarzadeh H, Lazzarini G, Gatta A, Sadeghinezhad J, Samieeroudy L, Pirone A, Miragliotta V. Three-dimensional morphometry of the testis in dog using design-unbiased stereology. Anat Histol Embryol 2024; 53:e12968. [PMID: 37712329 DOI: 10.1111/ahe.12968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/16/2023] [Accepted: 09/03/2023] [Indexed: 09/16/2023]
Abstract
Testis is considered the main organ of the male reproductive system. Dogs are used as a suitable experimental model of testicular diseases in humans. From the veterinary aspect, several disorders have been reported to affect the testis in dogs. Thus, the objective of the present study was to investigate the morphometrical features of the dog testis using design-based stereology. The testes of six male dogs were used. Isotropic, uniform random sections were obtained and processed for light microscopy. Testicular total volume and the fractional volume of the seminiferous tubules, interstitial tissue and germinal epithelium were measured using the Cavalieri's estimator and the point counting system. Germinal epithelial surface area was estimated using test lines, and total length of seminiferous tubules was analysed using the counting frames. The total volume of testis was calculated 13.64 ± 1.94 cm3 . The relative volume fractions of the seminiferous tubules, interstitial tissue and germinal layer expressed as a percentage of total testicular volume were found to be 75.87 ± 6.11%, 23.68 ± 5.15% and 64.15 ± 4.82%, respectively. The surface area of the germinal layer was 915.25 ± 150.48 cm2 . The thickness of germinal layer was estimated to be 96.18 ± 10.72 μm. The total length of seminiferous tubules measured 290.8 ± 35.86 m. No statistical difference in investigated parameters was found between the left and right testes (p > 0.05). Our data might contribute to the male reproductive knowledge, help develop experimental studies in this field and possibly lead to advancement in the diagnosis and treatment of testicular diseases in the dog.
Collapse
Affiliation(s)
- Hadis Bojarzadeh
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Giulia Lazzarini
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Alessandra Gatta
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Javad Sadeghinezhad
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Leila Samieeroudy
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Andrea Pirone
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | | |
Collapse
|
2
|
Cordeiro DA, Costa GMJ, França LR. Testis structure, duration of spermatogenesis and daily sperm production in four wild cricetid rodent species (A. cursor, A. montensis, N. lasiurus, and O. nigripes). PLoS One 2021; 16:e0251256. [PMID: 34014973 PMCID: PMC8136699 DOI: 10.1371/journal.pone.0251256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 04/23/2021] [Indexed: 11/24/2022] Open
Abstract
Although rodents represent approximately 40% of all living mammalian species, our knowledge regarding their reproductive biology is still scarce. Due to their high vulnerability to environmental changes, wild rodents have become beneficial models for ecological studies. Thus, we aimed to comparatively investigate key functional testis parameters in four sexually mature wild rodent species (A. cursor, A. montensis, N. lasiurus, and O. nigripes). These species belong to the Cricetidae family, which is the most diverse family of rodents in South America, with a total of ~120 species in Brazil. The results found for the gonadosomatic index and the sickled sperm head shape observed strongly suggest that the species here evaluated are promiscuous, prolific, and short-lived. The duration of spermatogenesis was relatively short and varied from ~35-40 days. Both the percentage of seminiferous tubules (ST) in the testis parenchyma (~95-97%) and the number of Sertoli cells (SC) (~48-70 million) per testis gram were very high, whereas a fairly good SC efficiency (~8-13 round spermatids per SC) was observed. In comparison to other mammalian species studied, particularly the rodents of the suborder Myomorpha (i.e. hamsters, rats and mice), the rodents herein investigated exhibited very high (~62-80 million) daily sperm production per testis gram. This impressive spermatogenic efficiency resulted mainly from the short duration of spermatogenesis and quite high values found for the ST percentage in the testis and the SC number per testis gram. We expect that the knowledge here obtained will help conservation programs and the proper management of wildlife.
Collapse
Affiliation(s)
- Dirceu A. Cordeiro
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais—UFMG, Belo Horizonte, MG, Brazil
- UNINCOR, Três Corações, MG, Brazil
| | - Guilherme M. J. Costa
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais—UFMG, Belo Horizonte, MG, Brazil
| | - Luiz R. França
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais—UFMG, Belo Horizonte, MG, Brazil
| |
Collapse
|
3
|
Du X, Qin F, Amevor FK, Zhu Q, Shu G, Li D, Tian Y, Wang Y, Zhao X. Rearing system influences the testicular development, semen quality and spermatogenic cell apoptosis of layer roosters. Poult Sci 2021; 100:101158. [PMID: 34198091 PMCID: PMC8255236 DOI: 10.1016/j.psj.2021.101158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 10/09/2020] [Accepted: 03/01/2021] [Indexed: 12/03/2022] Open
Abstract
The objective of this study was to compare the testicular development, semen quality, and spermatogenic cell apoptosis of roosters reared in colony, single, and large cages. Rohman parental layers (n = 540) were randomly allocated into cages of rearing system groups (135 males and 405 females). The experimental period was 70 to 210 d of age. We compared testicular development and plasma main reproductive hormones (Follicle-stimulating hormone; Luteinizing hormone; Testosterone; Estrogen2;) from d 70 to 210 of roosters among the three systems. In addition, routine semen quality indexes, apoptosis of testicular spermatogenic cells and sperm apoptosis of breeding roosters under three rearing systems on d 175 and d 210 were evaluated. Roosters during the growing period (from d 70 to 140) have rapid testis growth and increasing main reproductive hormones in plasma. At the peak of sexual maturity (d 210), in colony cage, the females have a positive effect and promote the testis development of males. However, the stocking density in colony cage has no effect on testicular development; compared with the single and large cage. Roosters reared in the natural mating system had better semen quality, particularly in semen volume, density, and viability; the hatching % of fertilized eggs and healthy chicks were higher for the colony than single and large cages. Furthermore, the sperm density was higher for colony than single and large cages, which was related to the apoptosis of spermatogonia and spermatocyte, not the apoptosis of mature sperm. This study provided the basic data for the reproductive performance research of chicken reared in the colony cages.
Collapse
Affiliation(s)
- Xiaxia Du
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Fei Qin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Felix Kwame Amevor
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Qin Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Gang Shu
- Department of Basic Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Diyan Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yaofu Tian
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Xiaoling Zhao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| |
Collapse
|
4
|
Siman VA, Godoy RS, Dias FC, Silva FA, Del Giudice GM, Gomes ML, Matta SL. Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae). Anim Reprod Sci 2017; 184:36-43. [DOI: 10.1016/j.anireprosci.2017.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 05/12/2017] [Accepted: 06/21/2017] [Indexed: 11/29/2022]
|
5
|
Simões LS, Sasahara THC, Favaron PO, Marques R, Oliveira MFDE, Machado MRF, Miglino MA. The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti). AN ACAD BRAS CIENC 2017; 89:1745-1751. [PMID: 28832725 DOI: 10.1590/0001-3765201720170038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/06/2017] [Indexed: 11/22/2022] Open
Abstract
The germinative, Sertoli and Leydig cells of two caviomorph rodents (Cavia porcellus and Dasyprocta agouti) were counted as well as the estimation of the total volume of the testis and the total volume of seminiferous tubules and interstitium in prepubertal, pubertal and adult animals. The number of spermatogonia, spermatocytes and spermatids cells increased during the pubertal phase in both rodents, notably the spermatid cells. The spermatocyte and spermatid slightly decreased in the adult of both rodents, but the increment in spermatogonia cells number was seen, mainly in cutias. The number of Sertoli cells increased in pubertal rodents, but in the adult the number reduced. Substantial number of Leydig cells was counted in pubertal and adult guinea pigs. In cutias, the number of Leydig cells increased in pubertal phase and decline in adults. The design-based stereological method has proven to be unbiased and reliable to be applied in reproduction studies.
Collapse
Affiliation(s)
- Luciana S Simões
- Departmento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo /FMVZ-USP, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, 05508-270 São Paulo, SP, Brazil
| | - Tais H C Sasahara
- Hospital Veterinário, Universidade de Franca /UNIFRAN, Av. Dr. Armando Salles Oliveira, 201, Pq. Universitário, 14404-600 Franca, SP, Brazil
| | - Phelipe O Favaron
- Departmento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo /FMVZ-USP, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, 05508-270 São Paulo, SP, Brazil
| | - Ricardo Marques
- Departmento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo /FMVZ-USP, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, 05508-270 São Paulo, SP, Brazil
| | - Moacir F DE Oliveira
- Universidade Federal Rural do Semi-Árido, Departmento de Ciências Animais, BR 110, Km 47, s/n, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Márcia R F Machado
- Departamento de Morfologia e Fisiologia Animal, Universidade Estadual Paulista / UNESP, Faculdade de Ciências Agrárias e Veterinárias/FCAV, Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900 Jaboticabal, SP, Brazil
| | - Maria Angelica Miglino
- Departmento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo /FMVZ-USP, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, 05508-270 São Paulo, SP, Brazil
| |
Collapse
|
6
|
Çetkin M, Kızılkan N, Demirel C, Bozdağ Z, Erkılıç S, Erbağcı H. Quantitative changes in testicular structure and function in rat exposed to mobile phone radiation. Andrologia 2017; 49. [DOI: 10.1111/and.12761] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2016] [Indexed: 11/30/2022] Open
Affiliation(s)
- M. Çetkin
- Faculty of Medicine; Department of Anatomy; Gaziantep University; Gaziantep Turkey
| | - N. Kızılkan
- Faculty of Medicine; Department of Anatomy; Gaziantep University; Gaziantep Turkey
| | - C. Demirel
- Faculty of Medicine; Department of Biophysics; Gaziantep University; Gaziantep Turkey
| | - Z. Bozdağ
- Faculty of Medicine; Department of Pathology; Gaziantep University; Gaziantep Turkey
| | - S. Erkılıç
- Faculty of Medicine; Department of Pathology; Gaziantep University; Gaziantep Turkey
| | | |
Collapse
|
7
|
Morais ACT, Balarini MK, Lopes EO, Menezes TP, Quintela FM, Morais DB, Gomes MDLM, Matta SLPD. The tubular compartment and the spermatogenic dynamics of the wild rodent Oxymycterus nasutus (Rodentia: Cricetidae). Anim Reprod Sci 2014; 149:249-58. [PMID: 25037444 DOI: 10.1016/j.anireprosci.2014.06.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 06/23/2014] [Accepted: 06/24/2014] [Indexed: 10/25/2022]
Abstract
Despite the order Rodentia present worldwide distribution and large number of species in the Brazilian fauna, detailed studies on testicular morphophysiology are still scarce. Therefore, this study aimed to analyze the dynamics of the spermatogenic process of Oxymycterus nasutus using morphometrical and stereological tools. Testicles from ten sexually mature males were used, showing a gonadosomatic index of 0.89%. The testicular parenchyma showed one of the highest tubulesomatic indexes reported among wild rodents - 0.82% - from which 65.12% was allocated into seminiferous epithelium. The average tubular diameter was 249.89 μm, whereas the epithelium height was 62.47 μm and the total length was 18.62 m per gram of testis. Eight different stages of the seminiferous epithelium cycle were described. Stage 1 was used for counting the germ cell population as well as the Sertoli cells. On average, 3.47 type-A spermatogonia, 24.39 primary spermatocytes in preleptotene/leptotene, 24.13 primary spermatocytes in pachytene, 68.38 round spermatids and 7.33 Sertoli cells were found per tubular cross section. There were 91.02 × 10(6) Sertoli cells per gram of testis and each cell was able to support 9.33 spermatids and 16.43 germ cells. The coefficient of spermatogonial mitosis was 7.02, while 2.83 spermatids were produced for each primary spermatocyte in pachytene. The overall efficiency of spermatogenesis was 19.70 cells, whereas the sperm reserve per gram of testis totalized 849.63 × 10(6) spermatids. Therefore, the presented data showed that O. nasutus shows a high energetic investment in reproduction, corroborating the findings for other species of the Cricetidae family.
Collapse
Affiliation(s)
- Ana Carolina Torre Morais
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil
| | - Maytê Koch Balarini
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil
| | - Elizabeth Oliveira Lopes
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil
| | - Tatiana Prata Menezes
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil
| | - Fernando Marques Quintela
- Department of Animal Biology, Federal University of Rio Grande do Sul (UFRGS) - Porto Alegre, Rio Grande do Sul, 91501-970 Brazil
| | - Danielle Barbosa Morais
- Department of Morphology, Federal University of Rio Grande do Norte (UFRN) - Natal, Rio Grande do Norte, 59078-900 Brazil
| | - Marcos de Lucca M Gomes
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil
| | - Sérgio Luis P da Matta
- Department of General Biology, Federal University of Viçosa (UFV) - Viçosa, Minas Gerais, 36570-000 Brazil.
| |
Collapse
|