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He H, Li X, Li J, Ning Y, Luo J, Shi H. A novel regulatory sex-skewing method that inhibits testicular DPY30 expression to increase female rate of dairy goat offspring. J Anim Sci 2024; 102:skad422. [PMID: 38167777 PMCID: PMC10998464 DOI: 10.1093/jas/skad422] [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: 06/15/2023] [Accepted: 01/02/2024] [Indexed: 01/05/2024] Open
Abstract
The demand for goat milk products has increased exponentially with the growth of the global population. The shortage of dairy products will be addressed extraordinarily by manipulating the female rate of goat offspring to expand the goat population and goat milk yield. No studies have reported bioinformatic analyses of X- and Y-bearing sperm of dairy goats, although this will contribute to exploring novel and applied sex-skewing technologies. Regulatory subunit of the histone methyltransferase complex (DPY30) was determined to be the key differentially expressed protein (DEP) among 15 DEPs identified in the present study. The spatiotemporal expression of DPY30 strongly suggested a functional involvement of the protein in spermatogenesis. DPY30 promoted meiosis via upregulating SYCP3, which played a crucial role in mediating sex ratio skewing in goats. Although DPY30 suppressed the self-renewal of spermatogonia stem cells through AKT/PLZF, DPY30 inhibition in the testis did not induce testicular dysgenesis. Based on the biosafety assessment in mice testes, lentivirus-mediated DPY30 knockdown in bucks' testes increased X-bearing sperm proportion and female kids' rate (22.8 percentage points) without affecting sperm quality, pregnancy rate, and kidding rate. This study provides the first evidence of the DEGs in the sexed sperm of dairy goats. DPY30 inhibition in the testes of bucks increased the female kids' rate without influencing reproductive performance. The present study provides evidence for expanding the female dairy goat population to address the concern of dairy product shortage.
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Affiliation(s)
- Huanshan He
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xiang Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
| | - Jintao Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
| | - Yong Ning
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
| | - Jun Luo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
| | - Huaiping Shi
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
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Wahyuni S, Siregar TN, Gholib G, Saputra A, Hafizuddin H, Sofyan H, Jalaluddin M, Adam M, Akmal M. Identification and Determination of the Seminiferous Epithelium Stages and Spermatid Development in the Testis of Aceh Bull ( Bos indicus). Vet Med Int 2023; 2023:8848185. [PMID: 37795107 PMCID: PMC10547576 DOI: 10.1155/2023/8848185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 09/05/2023] [Accepted: 09/11/2023] [Indexed: 10/06/2023] Open
Abstract
This study was conducted to describe the stages of seminiferous epithelium (SE), determine the relative frequency of the stages, and identify the steps of spermatid development during spermatogenesis in the testicular tissue of Aceh bull. Seven pairs of the testicular organs of Aceh bull (Bos indicus) were used and then processed in a histological manner for staining using haematoxylin and eosin (H&E) and periodic acid-Schiff-haematoxylin (PAS-H). The stages of seminiferous tubules were examined using a tubular morphology method while spermatid development was observed based on the acrosome formation during spermatid development. Eight stages (stages I to VIII) of SE were found in the testicular seminiferous tubules of Aceh bull. Furthermore, the percentage of the relative frequency of each stage was 25.48, 15.38, 12.92, 4.74, 14.97, 10.69, 10.74, and 5.08%, respectively, with the relative frequency of premeiotic, meiotic, and postmeiotic phases being 53.78, 4.74, and 41.48%, respectively. Spermatid development from round to elongated spermatids occurred in 14 steps. Steps 1 to 7 were observed in stage I, steps 8 and 9 in stage II, steps 10 and 11 in stage III, step 12 in stage IV, step 13 in stages V and VI, and step 14 in stages VII and VIII. These findings can be used as a basis for further studies, particularly in evaluating the abnormality of the cellular composition of the seminiferous tubule in each stage of spermatogenesis and also in determining daily sperm production in Aceh bull.
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Affiliation(s)
- Sri Wahyuni
- Laboratory of Anatomy, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Tongku Nizwan Siregar
- Laboratory of Reproduction, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Gholib Gholib
- Laboratory of Physiology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Arianto Saputra
- Study Program of Veterinary Medicine Education, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Hafizuddin Hafizuddin
- Laboratory of Reproduction, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Hamny Sofyan
- Laboratory of Anatomy, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Muhammad Jalaluddin
- Laboratory of Anatomy, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Mulyadi Adam
- Laboratory of Physiology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Muslim Akmal
- Laboratory of Histology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
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3
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Zhao W, Adjei M, Zhang Z, Yuan Z, Cisang Z, Song T. The role of GnRH in Tibetan male sheep and goat reproduction. Reprod Domest Anim 2023; 58:1179-1187. [PMID: 37492901 DOI: 10.1111/rda.14432] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/16/2023] [Accepted: 07/06/2023] [Indexed: 07/27/2023]
Abstract
The hypothalamic-pituitary-gonadal (HPG) axis connects the hypothalamus, pituitary gland, and gonads. The regulation of reproductive processes includes integrating various factors from structural functions and environmental conditions in the HPG axis, with the outcome indication of these processes being the pulsatile secretion of gonadotropin-releasing hormone (GnRH) from the hypothalamus. These factors include feed consumption and nutritional condition, sex steroids, season/photoperiod, pheromones, age, and stress. GnRH pulsatile secretion affects the pattern of gonadotropin secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which then regulates both endocrine function and gamete maturation in the gonads. This regulates gonadotropins and testosterone (T) production. There is evidence that in males, GnRH participates in a variety of host behavioural and physiological processes such as the release of reproductive hormones, progression of spermatogenesis and sperm function, aggressive behaviour, and physiological metabolism. GnRH activates receptors expressed on Leydig cells and Sertoli cells, respectively to stimulate T secretion and spermatogenesis in the testis. Photoperiod affects the reproductive system of the hypothalamic-pituitary axis via rhythmic diurnal melatonin secretion. Increased release of melatonin promotes sexual activity, GnRH production, LH stimulation, and T production. This induces testicular functions, spermatogenesis, and puberty. GnRH reduces the release of LH by the pituitary through the cascade effect and decreases plasma concentration of T. Gut microbiota maintain sex steroid homeostasis and may induce reduction in reproduction productivity. Recently, findings of kisspeptin-neurokinin-dynorphin neuronal network in the brain have resulted in fast advances in how GnRH secretion is controlled. Emerging studies have also indicated that other neuropeptide analogues could be used in control reproduction procedures in various goat and sheep breeds. The Tibetan male sheep and goats reproduce on a seasonal basis and have high reproductive performance. This is a review for the role of GnRH in Tibetan male sheep and goats reproduction. This is intended to enhance reproductive knowledge for understanding the key roles of GnRH relating to male reproductive efficiency of Tibetan sheep or goats.
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Affiliation(s)
- Wangsheng Zhao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Michael Adjei
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Zhenzhen Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Zhenjie Yuan
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, China
| | - Zhuoma Cisang
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, China
| | - Tianzeng Song
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, China
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Perumal P, Sunder J, De AK, Alyethodi RR, Vikram R, Upadhyay VR, Mayuri SC, Bhattacharya D. Flaxseed oil modulates testicular biometrics, hormone, libido, antioxidant and semen profiles in endangered Teressa goat of Andaman and Nicobar Islands. Reprod Biol 2023; 23:100730. [PMID: 36640628 DOI: 10.1016/j.repbio.2023.100730] [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: 08/27/2022] [Revised: 12/30/2022] [Accepted: 01/02/2023] [Indexed: 01/14/2023]
Abstract
Teressa goat is a unique goat breed in Andaman and Nicobar Islands (ANI) of India. Effects of Flaxseed oil (FSO) supplementation in body weight (BW), scrotal circumference (SC), testicular volume (TV) and testicular weight (TW), endocrinological profiles, sex behavioural profiles (SBPs), oxidative stress markers and semen production and its quality profiles in rainy and dry summer season were studied in Teressa goat. Male goats (n = 12) of 3-4 years old were equally divided into control and treated groups. Treated animals received 25 mL FSO per day. Oral drenching of FSO was done in the morning before feeding the concentrate ration. Body weight, scrotal circumference, TV and TW were measured in bucks of FSO treated and untreated during rainy and dry summer seasons. Blood follicle stimulating hormone (FSH), luteinizing hormone (LH), testosterone, thyroid stimulating hormone (TSH), triiodothyronine (T3), thyroxine (T4), cortisol and prolactin, total antioxidant capacity (TAC), superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and malondialdehyde (MDA) were measured in bucks of FSO treated and untreated during rainy and dry summer seasons. Libido score (LS), mating ability score (MAS) and sex behavioural score (SBS) were estimated at time of semen collection in bucks of FSO treated and untreated during rainy and dry summer seasons. Semen samples (n = 100; 50 semen samples from each season; each 25 semen samples from control and treatment groups per season) were collected and analysed for semen quality profiles. One-way ANOVA (control rainy, control dry, treated rainy and treated dry) revealed that BW, SC, TV and TW, FSH, LH, testosterone, TSH, T3 and T4 were higher (P < 0.05) and cortisol and prolactin were lower (P < 0.05) in FSO treated bucks of rainy season followed by untreated bucks of rainy season, FSO treated bucks of dry summer season and were lower (P < 0.05) in untreated bucks of dry summer season. Similarly, TAC, CAT, SOD and GSH, LS, MAS and SBS, and volume, pH, sperm concentration, mass activity, total motility (TM), viability, acrosomal integrity (AcI), plasma membrane integrity (PMI) and nuclear integrity (NI) were higher (P < 0.05) and MDA and TSA were lower (P < 0.05) in FSO treated bucks of rainy season followed by FSO treated bucks of dry summer season, untreated bucks of rainy season and were lower (P < 0.05) in untreated bucks of dry summer season. The results of the present study indicated that the breeding bucks suffered physiological stress (higher cortisol), oxidative stress (higher MDA and deficiency of antioxidants), hormonal imbalance (higher prolactin and cortisol and deficiency of gonadotropins, gonadal hormone and thyroid hormones) and infertility due to poor libido and poor semen production and its quality profiles during dry summer season. Thus, dry summer was more stressful season compared to rainy season for the goat bucks. FSO supplementation mitigated these stresses and improved the scrotal and testicular biometrics, libido, antioxidants, hormones and semen quality profiles in Teressa goat bucks. The current study concluded that FSO effectively improved the hormones, libido, antioxidant profiles, and scrotal and testicular biometrics with cascading beneficial effects on semen quality profiles in Teressa goat bucks under humid tropical island ecosystem of Andaman and Nicobar Islands.
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Affiliation(s)
- P Perumal
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India.
| | - Jai Sunder
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India
| | - A K De
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India
| | - R R Alyethodi
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India
| | - R Vikram
- Animal Physiology and Reproduction, ICAR-National Research Centre on Mithun, Medziphema 797106, Nagaland, India
| | - V R Upadhyay
- Division of Animal Physiology, ICAR-National Dairy Research Institute, Karnal 13200, Haryana, India
| | - S C Mayuri
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India
| | - D Bhattacharya
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair 744105, Andaman and Nicobar Islands, India
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Ciccarelli M, Oatley JM. Perspectives: Approaches for Studying Livestock Spermatogonia. Methods Mol Biol 2023; 2656:325-339. [PMID: 37249879 DOI: 10.1007/978-1-0716-3139-3_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
At present, the knowledge base on characteristics and biology of spermatogonia in livestock is limited in comparison to rodents, yet the importance of studying these cells for comparative species analysis and enhancing reproductive capacity in food animals is high. Previous studies have established that although many core attributes of organ physiology and mechanisms governing essential cellular functions are conserved across eutherians, significant differences exist between mice and higher order mammals. In this chapter, we briefly discuss distinguishing aspects of testicular anatomy and the spermatogenic lineage in livestock and critical considerations for studying spermatogonial stem cell biology in these species.
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Affiliation(s)
- Michela Ciccarelli
- Center for Reproductive Biology, Washington State University, Pullman, WA, USA
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Jon M Oatley
- Department of Biology, University of Texas at San Antonio, San Antonio, TX, USA.
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6
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Chiarini-Garcia H, Caldeira-Brant AL. Optimization of Testicular Fixation-Embedding Techniques for Improved Evaluation of Mammalian Spermatogonial Morphology and Function. Methods Mol Biol 2023; 2656:7-20. [PMID: 37249864 DOI: 10.1007/978-1-0716-3139-3_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Numerous methods have been successfully used to evaluate mammalian spermatogonial biology However, the conventional light microscopy assays present a challenge in precisely identifying spermatogonial phenotypes, which can result in discrepancies between molecular and morphological findings. Such precise association could lead to a more robust interpretation of spermatogonial activity in steady-state spermatogenesis, which may facilitate the translation from basic research to clinical applications. In this chapter, we present two histological processing methods that enable a comprehensive analysis of spermatogonial morphology and function, involving fixation of mammalian testicular tissue in glutaraldehyde and embedding in plastic resin. These techniques have proven to be effective in light microscopy studies.
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Affiliation(s)
- Helio Chiarini-Garcia
- Laboratório de Biologia Estrutural e Reprodução, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Andre L Caldeira-Brant
- Laboratório de Biologia Estrutural e Reprodução, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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7
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Exogenous gonadotropin-releasing hormone counteracts the adverse effect of scrotal insulation on testicular functions in bucks. Sci Rep 2022; 12:7869. [PMID: 35551262 PMCID: PMC9098548 DOI: 10.1038/s41598-022-11884-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/29/2022] [Indexed: 11/08/2022] Open
Abstract
This study determined the effects of scrotal insulation on testicular functions in bucks and evaluated the impact of exogenous gonadotropin-releasing hormone (GnRH) administration before scrotal insulation on sperm production and testicular vascular dynamics. Twelve bucks were randomly divided into three groups: scrotal-insulated animals without GnRH treatment (INS), scrotal-insulated animals treated previously with GnRH (GnRH + INS), and animals without insulation as controls (CON). Doppler ultrasonography was used to evaluate testicular vascular changes, and semen samples were collected to assess seminal parameters. Testicular samples were collected from slaughtered bucks at the end of the experiment for histological investigations and immunohistochemical analysis for caspase 3 (apoptotic marker), and a vascular endothelial growth factor (VEGF; hypoxic marker) evaluation. Sperm motility drastically decreased (33%) in the INS group on day 8 compared with those in the GnRH + INS and CON groups (58% and 85%, respectively). Testicular blood flow significantly decreased for 3 and 2 weeks in the INS and GnRH + INS groups, respectively. The pulsatility index (PI) reached pretreatment values at 5 and 4 weeks after insulation in the INS and GnRH + INS groups, respectively. The resistance index (RI) values increased in both insulated groups for the first 2 weeks and decreased to control values 4 weeks after insulation. However, the maximum velocity (VP) started to increase reaching pretreatment values by the 5th and 3rd weeks after insulation in the INS and GnRH + INS groups, respectively. Histological investigations showed a marked reduction in lipid inclusions in Sertoli cells in the GnRH + INS group compared with those in the INS group. The distributions of both caspase 3 and VEGF decreased in the GnRH + INS group compared with those in the INS group. This study showed that the administration of a single dose of GnRH delayed the negative effects of scrotal insulation on different seminal traits and revealed the pivotal role of GnRH in compensating testicular insulation in bucks.
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8
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Ashraf M, Zeeshan M, Ahmad N, Javed K, Riaz A, Riaz H. Changes in the testicular histomorphometry and their association with genes expression pattern of testes from birth to puberty in Beetal goat kids. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Diaz EA, Donoso G, Saenz C, Aponte PM. Spermatogenesis in a vulnerable South American cervid, dwarf red brocket (Mazama rufina). Anat Histol Embryol 2021; 51:91-102. [PMID: 34820886 DOI: 10.1111/ahe.12766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/12/2021] [Accepted: 11/15/2021] [Indexed: 11/29/2022]
Abstract
The brocket deer (Genus Mazama) is a highly diverse cervid group distributed from Mexico to Argentina, with a downward population trend. However, literature on the basic reproductive biology of the genus is scarce. This work aimed to study biometric, histological and stereological aspects of the testes of Dwarf Red Brocket (Mazama rufina). Testes from free-ranging adult brockets (n = 3) were retrieved from necropsies. Testes were histologically processed. From histological images, several stereological parameters were estimated, and seminiferous epithelium cycle morphology was described. Testes volumes were between 8.2 and 18.4 ml and weights from 8.3 to 19.4 g. Gonadosomatic index (% paired-testes weight to body weight) went from 0.17 to 0.64. The tubular cross-sectional diameter was 179.8 ± 2.8 µm. Estimated volume densities for parenchyma and interstitium were 78.8% and 21.2% respectively. There were (in millions/ml) 96.0 ± 13.1 germ cells and 37.7 ± 6.0 somatic cells. Specific cell densities were (all expressed in millions/ml) as follows: spermatogonia 13.1 ± 4.2; primary spermatocytes 43.1 ± 5.0; round spermatids 36.8 ± 8.0 (lower density near the caudal pole, p < 0.01); sustentacular (Sertoli) cells 16.8 ± 4.1 and interstitial endocrine (Leydig) cells 17.4 ± 3.4. Sertoli cell index (germ cells per Sertoli cell) was 6.72. Eight stages of the cycle were described, and frequencies estimated, resembling those of goats. M. rufina adult testis anatomy is similar to that of other cervids and domestic ruminants, with an apparently lower spermatogenic efficiency. This work is a first approximation to the physiology of the testis of M. rufina. Basic knowledge of the reproductive physiology of vulnerable species may allow biotechnological approaches for the restitution of animal populations.
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Affiliation(s)
- Eduardo A Diaz
- Escuela de Medicina Veterinaria, Colegio de Ciencias de la Salud, Universidad San Francisco de Quito (USFQ), Quito, Ecuador.,Hospital de Fauna Silvestre Tueri, Instituto iBIOTROP, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
| | - Gustavo Donoso
- Hospital de Fauna Silvestre Tueri, Instituto iBIOTROP, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
| | - Carolina Saenz
- Hospital de Fauna Silvestre Tueri, Instituto iBIOTROP, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
| | - Pedro M Aponte
- Escuela de Medicina Veterinaria, Colegio de Ciencias de la Salud, Universidad San Francisco de Quito (USFQ), Quito, Ecuador.,Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito (USFQ), Quito, Ecuador.,Instituto de Investigaciones en Biomedicina iBIOMED, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
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Bóveda P, Esteso MC, Velázquez R, Castaño C, Toledano-Díaz A, López-Sebastián A, Mejía O, Millán de la Blanca MG, Ungerfeld R, Santiago-Moreno J. Influence of circulating testosterone concentration on sperm cryoresistance: The ibex as an experimental model. Andrology 2021; 9:1242-1253. [PMID: 33686789 DOI: 10.1111/andr.12998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/04/2021] [Accepted: 03/04/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Recent studies have noted that the circulating testosterone concentration may affect the ability of spermatozoa to survive cryopreservation. However, few attempts to confirm such a relationship have been made. Wild ruminant species have very marked seasonal changes in their reproductive function and strong annual changes in their plasma testosterone concentration. OBJECTIVES The present work examines the influence of induced changes in testosterone secretion on sperm variables following conventional slow freezing and ultra-rapid freezing, using the Iberian ibex as an experimental model. MATERIALS AND METHODS In a first experiment, testosterone levels were reduced in the middle of the rutting season (December) using the antiandrogen cyproterone acetate (CA). In a second experiment, testosterone levels were increased at the end of the rutting season (January) via the use of the androgen testosterone propionate (TP). RESULTS During December, the testosterone concentration was found to be higher in the blood and seminal plasma of untreated males than in those of CA-treated males (p < 0.001 and p < 0.05, respectively). Compared with controls, the TP-treated animals had higher blood plasma testosterone concentrations but lower seminal plasma testosterone concentrations during January (p < 0.01 and p < 0.001, respectively). The seminal vesicles of the TP-treated males were larger than those of untreated males (p < 0.05). When CA was administered, sperm viability improved compared with controls (p < 0.05), irrespective of the freezing protocol followed. For the ultra-rapid freezing procedure, the cryoresistance ratio for motility decreased when TP was administered (p < 0.05). The values for fresh sperm morphometric variables decreased during the 50 days after the end of CA treatment (p < 0.001) and increased over the same time after the end of TP treatment (p < 0.001). DISCUSSION AND CONCLUSION The circulating testosterone concentration appears to influence sperm cryoresistance. This may explain the seasonal changes seen in sperm freezability in some species, independent of fresh sperm quality.
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Affiliation(s)
- Paula Bóveda
- Department of Animal Reproduction, INIA, Madrid, Spain
| | | | | | | | | | | | - Octavio Mejía
- Centro de Enseñanza, Investigación y Extensión en Producción Ovina, FMVZ-UNAM, Tres Marías, Morelos, Mexico
| | | | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
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Djouahra N, Moudilou EN, Exbrayat JM, Hammouche S. Immunodistribution of RFamide-related peptide-3 (RFRP-3) during the seminiferous epithelium cycle in a desert rodent Psammomys obesus. Tissue Cell 2021; 69:101484. [PMID: 33450652 DOI: 10.1016/j.tice.2020.101484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 12/21/2022]
Abstract
The Sand rat, Psammomys obesus, living northwest of the Algerian Sahara, presents a seasonal reproductive cycle. The purposes of this study were firstly to determine the stages of seminiferous epithelium cycle (SEC) by histological and morphometric analysis and secondly to investigate, for the first time, the testicular expression of RFamide-related peptide-3 (RFRP-3) during the SEC by immunohistochemistry. The results showed that the SEC consists of 14 stages according to the tubular morphology method. RFRP-3 was observed in both testicular compartments: the tubular and the interstitial. Leydig cells exhibited the highest RFRP-3 signal (30.73 % ± 4.80) compared to Sertoli cells (13-15 %). In the germline, RFRP-3 was detected during the late prophase I of meiosis in late pachytene, diplotene and metaphasic spermatocytes I. In addition, only round and triangular spermatids were positive during spermiogenesis. Referring to the SEC, it was found that the increased staining of RFRP-3 in spermatocytes I coincided with late pachytene of XI and XII stages (16.90 % ± 0.69 and 16.61 % ± 0.28, respectively). In spermatids, the labeling decreased in the triangular ones at stage IX (8.04 % ± 0.42). These results suggest the involvement of RFRP-3 in the control of SEC in P. obesus.
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Affiliation(s)
- Nassima Djouahra
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Arid Area Research Laboratory, Algiers, Algeria.
| | - Elara N Moudilou
- Confluence Sciences and Humanities Research Unit, Biosciences Technologies Ethics Laboratory, Lyon Catholic University, 10 Place des Archives, Lyon, 69002, France
| | - Jean-Marie Exbrayat
- Confluence Sciences and Humanities Research Unit, Biosciences Technologies Ethics Laboratory, Lyon Catholic University, 10 Place des Archives, Lyon, 69002, France
| | - Sadjia Hammouche
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Arid Area Research Laboratory, Algiers, Algeria
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12
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Du X, Wu S, Wei Y, Yu X, Ma F, Zhai Y, Yang D, Zhang M, Liu W, Zhu H, Wu J, Liao M, Li N, Bai C, Li G, Hua J. PAX7 promotes CD49f-positive dairy goat spermatogonial stem cells' self-renewal. J Cell Physiol 2020; 236:1481-1493. [PMID: 32692417 DOI: 10.1002/jcp.29954] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 01/15/2023]
Abstract
Spermatogenesis is a complex process that originates from and depends on the spermatogonial stem cells (SSCs). The number of SSCs is rare, which makes the separation and enrichment of SSCs difficult and inefficient. The transcription factor PAX7 maintains fertility in normal spermatogenesis in mice. However, for large animals, much less is known about the SSCs' self-renewal regulation, especially in dairy goats. We isolated and enriched the CD49f-positive and negative dairy goat testicular cells by magnetic-activated cell sorting strategies. The RNA- sequencing and experimental data revealed that cells with a high CD49f and PAX7 expression are undifferentiated spermatogonia in goat testis. Our findings indicated that ZBTB16 (PLZF), PAX7, LIN28A, BMPR1B, FGFR1, and FOXO1 were expressed higher in CD49f-positive cells as compared to negative cells and goat fibroblasts cells. The expression and distribution of PAX7 in dairy goat also have been detected, which gradually decreased in testis tissue along with the increasing age. When the PAX7 gene was overexpressed in dairy goat immortal mGSCs-I-SB germ cell lines, the expression of PLZF, GFRα1, ID4, and OCT4 was upregulated. Together, our data demonstrated that there is a subset of spermatogonial stem cells with a high expression of PAX7 among the CD49f+ spermatogonia, and PAX7 can maintain the self-renewal of CD49f-positive SSCs.
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Affiliation(s)
- Xiaomin Du
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Siyu Wu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Yudong Wei
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Xiuwei Yu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Fanglin Ma
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Yuanxin Zhai
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Donghui Yang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Mengfei Zhang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Wenqing Liu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Haijing Zhu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China.,Life Science Research Center, Yulin University, Yulin, Shaanxi, China
| | - Jiang Wu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China.,College of Agriculture, Guangdong Ocean University, Zhanjiang, China
| | - Mingzhi Liao
- College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - Na Li
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
| | - Chunling Bai
- Key Laboratory for Mammalian Reproductive Biology and Biotechnology, Ministry of Education, Inner Mongolia University, Hohhot, China
| | - Guangpeng Li
- Key Laboratory for Mammalian Reproductive Biology and Biotechnology, Ministry of Education, Inner Mongolia University, Hohhot, China
| | - Jinlian Hua
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China
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13
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Cruz A, Sullivan DB, Doty KF, Hess RA, Canisso IF, Reddi PP. Acrosomal marker SP-10 (gene name Acrv1) for staging of the cycle of seminiferous epithelium in the stallion. Theriogenology 2020; 156:214-221. [PMID: 32758798 DOI: 10.1016/j.theriogenology.2020.06.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 12/17/2022]
Abstract
The acrosome plays a critical role in sperm-oocyte interactions during fertilization. SP-10 is an acrosomal matrix protein, which is evolutionarily conserved among mammals. The SP-10 antibody has been shown to be useful for staging the seminiferous cycle in the mouse and human. A canonical acrosomal marker; however, has never been used for staging in the horse. The objectives of the present study were to investigate the presence of SP-10 within the horse acrosome using an anti-mouse SP-10 antibody, to classify spermatids based on the shape of the acrosome, and then to use that information to assign stages of the cycle of the seminiferous epithelium. Testes from mature stallions with history of normospermic ejaculates were used for immunohistochemistry. We found that the mouse SP-10 antibody stained the horse acrosome vividly in testis cross-sections, indicating evolutionary conservation. Previous methods based on morphology alone without the aid of an antibody marker showed 8 stages in the horse seminiferous epithelium. Morphological detail of the acrosome afforded by the SP-10 marker in this study identified 16 steps of spermatids. This, in turn, led to the identification of 12 distinct stages in the cycle of the seminiferous epithelium of the horse wherein stage I shows recently formed round spermatids and stage XII includes meiotic divisions; a classification that is consistent with other animal models. The SP-10 antibody marks the acrosome in a way that enables researchers in the field to identify stages of spermatogenesis in the horse easily. In conclusion, we demonstrated that immunolabeling for SP-10 can be an objective approach to stage the cycle of the seminiferous epithelium in normospermic stallions; future studies will determine if SP-10 could be used to assess testicular dysfunction.
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Affiliation(s)
- Anamaria Cruz
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA
| | - Derek B Sullivan
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA
| | - Karen F Doty
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA
| | - Rex A Hess
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA
| | - Igor F Canisso
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA; Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA
| | - Prabhakara P Reddi
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana Champaign, USA.
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14
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Komsky-Elbaz A, Saktsier M, Biran D, Argov-Argaman N, Azaizeh H, Landau YS, Roth Z. Atrazine-induced toxicity in goat spermatozoa is alleviated to some extent by polyphenol-enriched feed. CHEMOSPHERE 2019; 236:124858. [PMID: 31549674 DOI: 10.1016/j.chemosphere.2019.124858] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Atrazine (ATZ) is one of the most extensively used herbicides to control growth of broadleaf and grassy weeds in crops. ATZ and its metabolites have deleterious effect on sperm quality. ATZ is also known for its ability to induce oxidative stress. Pistacia lentiscus (PL) is an evergreen shrub, with a high content of polyphenols in leaf extracts, with a known anti-inflammatory and antioxidant properties. The protective effect of PL or its extracts against ATZ-induced damage have not been yet evaluated. We examined the harmful effects of atrazine (ATZ) exposure on male reproductive system, using goat (Capra hircus) model spermatozoa and the protective effects of PL and PL ethanolic extract (PLE). In in-vivo experiments, male goats were fed a standard ration or one supplemented with 15 mg ATZ/kg body weight daily, for 6 months. Exposure to ATZ impaired the spermatozoa's morphology, viability, mitochondrial membrane potential and cell lipid composition. These alterations may in turn lead to reduced fertilization competence of the exposed spermatozoa. In an ex-vivo experiment, spermatozoa from male goats fed a standard ration or one supplemented with PL or PLE for 90 days and then were exposed to 1 μM ATZ or 10 μM of its major metabolite diaminochlorotriazine (DACT) through in-vitro capacitation. Prefeeding with PL or PLE partially attenuated the harmful effects of ATZ and DACT. Dietary supplementation with polyphenol-enriched feed can protect, to a certain extent, spermatozoa in males exposed to environmental toxicants.
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Affiliation(s)
- Alisa Komsky-Elbaz
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Center of Excellence in Agriculture and Environmental Health, The Hebrew University of Jerusalem, Israel
| | - Moty Saktsier
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - David Biran
- Extension Services, Ministry of Agriculture and Rural Development, Bet Dagan, Israel
| | - Nurit Argov-Argaman
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - Hassan Azaizeh
- The Institute of Applied Research (affiliated with University of Haifa), The Galilee Society, Shefa-Amr, 20200, Israel; Tel-Hai College, Department of Environmental Sciences, Upper Galilee, 12208, Israel
| | - Yan S Landau
- Department of Natural Resources and Agronomy, Agricultural Research Organization, The Volcani Center, Bet-Dagan, Israel
| | - Zvi Roth
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Center of Excellence in Agriculture and Environmental Health, The Hebrew University of Jerusalem, Israel.
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15
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Viana PIM, Farias TO, Talamoni SA, Godinho HP. Sertoli Cell Efficiency of the Neotropical Bats Anoura geoffroyi, Artibeus lituratus and Myotis levis (Mammalia: Chiroptera). ACTA CHIROPTEROLOGICA 2019. [DOI: 10.3161/15081109acc2018.20.2.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Pedro I. M. Viana
- Programa de Pós-graduação em Biologia de Vertebrados, Departamento de Ciências Biológicas, Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar, 500, Belo Horizonte, Minas Gerais, Brazil
| | - Talita O. Farias
- Programa de Pós-graduação em Biologia de Vertebrados, Departamento de Ciências Biológicas, Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar, 500, Belo Horizonte, Minas Gerais, Brazil
| | - Sonia A. Talamoni
- Programa de Pós-graduação em Biologia de Vertebrados, Departamento de Ciências Biológicas, Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar, 500, Belo Horizonte, Minas Gerais, Brazil
| | - Hugo P. Godinho
- Programa de Pós-graduação em Biologia de Vertebrados, Departamento de Ciências Biológicas, Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar, 500, Belo Horizonte, Minas Gerais, Brazil
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16
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Zarepourfard H, Riasi A, Frouzanfar M, Hajian M, Nasr Esfahani MH. Pomegranate seed in diet, affects sperm parameters of cloned goats following freezing-thawing. Theriogenology 2019; 125:203-209. [DOI: 10.1016/j.theriogenology.2018.10.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 01/07/2023]
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17
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Hamidatou Khati W, Moudilou EN, Exbrayat JM, Hammouche S. Immunolocalization of RFamide-related peptide 3 in a desert rodent Gerbillus tarabuli during seminiferous epithelium cycle. Tissue Cell 2018; 55:1-12. [PMID: 30503055 DOI: 10.1016/j.tice.2018.09.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/29/2018] [Accepted: 09/17/2018] [Indexed: 12/06/2022]
Abstract
Gerbillus tarabuli is a nocturnal seasonal breeder desert rodent with a main breeding season in spring and summer, and sexual quiescence in winter. This species is an interesting model for studying testis function in rodents. Therefore, the present study was performed firstly to investigate the stages of seminiferous epithelium cycle of Gerbillus tarabuli with a histological, morphometric and statistical study. And secondly to investigate the expression and possible variations in cellular distribution of RFamide-related peptide-3 (RFRP-3) - the mammalian ortholog of avian gonadotropin-inhibitory hormone (GnIH) - during seminiferous epithelium cycle using immunohistochimestry. Our results showed for the first time that the seminiferous epithelium cycle in Gerbillus tarabuli comprises 14 well-defined stages according to the tubular morphology method. The seminiferous epithelium thickness showed a significant difference during the epithelium cycle, thus it was the only morphometric classification criterion of seminiferous epithelium cycle in Gerbillus tarabuli. The immunohistochemical study reveals, for the first time, the presence of RFRP-3 in Gerbillus tarabuli testes, in both testicular compartments: the tubular and the interstitial. RFRP-3 is expressed differently according to the seminiferous epithelium cycle, RFRP-3 seemed to be more expressed at the stages V-VII and XIII. RFRP-3 was detected in Sertoli cells (≈12%), spermatocytes I (≈19%), round and elongated spermatids (≈13%), and with a more important signal in Leydig cells (26.87%±0.07). These results indicated the importance of RFRP-3 in testicular function in Gerbillus tarabuli; its expression at the interstitial and germinal levels argues in favor of an involvement in androgens synthesis and in spermatogenesis specifically in meiosis and spermiogenesis. This action seems primordial from stages V-VII and XIII. Also, the study of the seminiferous epithelium cycle will enrich the histological identity of the species.
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Affiliation(s)
- Wissam Hamidatou Khati
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Aride Area Research Laboratory, Algiers, Algeria.
| | - Elara N Moudilou
- UMRS 449- General Biology - Reproduction and Comparative Development, Lyon Catholic University, UDL, Ecole Pratique des Hautes Etudes, PSL, Lyon, France
| | - Jean-Marie Exbrayat
- UMRS 449- General Biology - Reproduction and Comparative Development, Lyon Catholic University, UDL, Ecole Pratique des Hautes Etudes, PSL, Lyon, France
| | - Sadjia Hammouche
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Aride Area Research Laboratory, Algiers, Algeria
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18
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Characterization of Seminiferous Epithelium Stages in the Wild Javan Muntjac ( Muntiacus muntjak muntjak) Using the Tubular Morphology Method. Vet Med Int 2018; 2018:3024532. [PMID: 30026905 PMCID: PMC6031200 DOI: 10.1155/2018/3024532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/18/2018] [Accepted: 05/20/2018] [Indexed: 12/04/2022] Open
Abstract
Stages of the seminiferous epithelium of the testis of the wild Javan muntjac (Muntiacus muntjak muntjak) in hard antler period were characterized based on the tubular morphology method. The number and the relative frequencies of seminiferous epithelium stages and the morphometry of germinal cell nuclei were identified microscopically. We identified eight stages of seminiferous epithelium in testicular tissue of the Javan muntjac and found that the relative frequencies of stages I to VIII were 14.87, 15.12, 17.75, 6.87, 7.37, 12.37, 13, and 12.62%, respectively. The diameter of the nuclei of germinal cells varied in each stage of seminiferous epithelium. Diplotene-stage primary spermatocytes had prominent and large nuclei ~8.97 ± 1.0 μm in stages III and IV. Pachytene primary spermatocytes appeared in most stages, except stage IV, whereas leptotene- and diplotene-stage primary spermatocytes were found in stages I and II, and III and IV, respectively. Round spermatids were observed in stages IV to VIII and in stage I but were absent in stages II and III, while elongated spermatids were observed in all stages except stage I. Our findings show that the stages of seminiferous epithelium in the Javan muntjac are similar to those found in neotropical cervids, small ruminants, and other domestic animals.
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Beracochea F, Viera MN, Acevedo L, Santiago-Moreno J, Ungerfeld R. Equine Chorionic Gonadotropin (eCG) improves bucks’ semen quality during the nonbreeding season. Reprod Domest Anim 2018; 53:1096-1102. [DOI: 10.1111/rda.13209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/04/2018] [Accepted: 04/07/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Florencia Beracochea
- Departamento de Fisiología; Facultad de Veterinaria; Universidad de la República; Montevideo Uruguay
| | - María Noel Viera
- Departamento de Fisiología; Facultad de Veterinaria; Universidad de la República; Montevideo Uruguay
| | - Lucía Acevedo
- Departamento de Fisiología; Facultad de Veterinaria; Universidad de la República; Montevideo Uruguay
| | - Julián Santiago-Moreno
- Departamento de Reproducción Animal; Instituto de Investigación y Tecnología Agraria y Alimentaria (INIA); Madrid Spain
| | - Rodolfo Ungerfeld
- Departamento de Fisiología; Facultad de Veterinaria; Universidad de la República; Montevideo Uruguay
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20
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Jang H. Differential Expression of Cyclic AMP-Response Element Binding Protein Zhangfei (CREBZF) in the Mouse Testis during Postnatal Development. Dev Reprod 2018; 22:65-72. [PMID: 29707685 PMCID: PMC5915768 DOI: 10.12717/dr.2018.22.1.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/18/2018] [Accepted: 03/21/2018] [Indexed: 11/25/2022]
Abstract
Cyclic AMP-response element binding protein zhangfei (CREBZF), a member of
ATF/CREB (activating transcription factor/ cAMP response element binding
protein) family, regulates numerous cellular functions and development of cells
by interacting transcription factors. This study discovered the expression
pattern of CREBZF in seminiferous tubule of testes during the postnatal
development of mice. In testis, CREBZF mRNA expression was the highest among
other organs. Immunofluorescence analyses showed that the CREBZF was
specifically expressed on spermatocyte but not in spermatogonia and Sertoli
cells in seminiferous epithelium of mouse testis. Semi-quantitative polymerase
chain reaction (PCR) analysis showed that CREBZF transcript level was
significantly elevated during postnatal development of mouse testis. Confocal
imaging analysis indicated that the protein expression of CREBZF in seminiferous
tubule remained low until postnatal day (PD) 14, and was dramatically increased
in PD 21. Interestingly, only one type of the spermatocyte expressed CREBZF
specifically among SCP3-positive spermatocytes. Taken together, these results
suggest that CREBZF may be novel putative marker of the spermatocyte and
regulate meiosis during postnatal development of mice.
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Affiliation(s)
- Hoon Jang
- Dept. of Biomedical Science, College of Life Sciences, CHA University, Seongnam 13488, Korea
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21
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Intratesticular injection followed by electroporation allows gene transfer in caprine spermatogenic cells. Sci Rep 2018; 8:3169. [PMID: 29453369 PMCID: PMC5816633 DOI: 10.1038/s41598-018-21558-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 02/07/2018] [Indexed: 01/09/2023] Open
Abstract
The production of transgenic livestock is constrained due to the limited success of currently available methods for transgenesis. Testis mediated gene transfer (TMGT) is an emerging method that shows a high success rate in generating transgenic mice. In this study, we report a newly developed protocol for electroporation-aided TMGT to produce a transgenic goat. The injectable volume and concentration of the transgene were first standardized, and then electroporation conditions were optimized in vitro. In vivo experiments were performed by injecting a transgenic construct (pIRES2-EGFP; enhanced green fluorescent protein) into the testicular interstitium followed by electroporation. Immunohistochemistry, quantitative real-time PCR (qPCR) and western blotting analyses confirmed the successful transfer of the transgene into seminiferous tubules and testicular cells. Furthermore, chromosomal integration of the transgene and its expression in sperm were evaluated d60 and d120 post-electroporation. Our protocol neither altered the seminal characteristics nor the fertilization capacity of the sperm cells. In vitro fertilization using transgenic sperm generated fluorescent embryos. Finally, natural mating of a pre-founder buck produced a transgenic baby goat. The present study demonstrates the first successful report of an electroporation-aided TMGT method for gene transfer in goats.
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22
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Reiten MR, Malachin G, Kommisrud E, Østby GC, Waterhouse KE, Krogenæs AK, Kusnierczyk A, Bjørås M, Jalland CMO, Nekså LH, Røed SS, Stenseth EB, Myromslien FD, Zeremichael TT, Bakkebø MK, Espenes A, Tranulis MA. Stress Resilience of Spermatozoa and Blood Mononuclear Cells without Prion Protein. Front Mol Biosci 2018; 5:1. [PMID: 29417049 PMCID: PMC5787566 DOI: 10.3389/fmolb.2018.00001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 01/08/2018] [Indexed: 11/19/2022] Open
Abstract
The cellular prion protein PrPC is highly expressed in neurons, but also present in non-neuronal tissues, including the testicles and spermatozoa. Most immune cells and their bone marrow precursors also express PrPC. Clearly, this protein operates in highly diverse cellular contexts. Investigations into putative stress-protective roles for PrPC have resulted in an array of functions, such as inhibition of apoptosis, stimulation of anti-oxidant enzymes, scavenging roles, and a role in nuclear DNA repair. We have studied stress resilience of spermatozoa and peripheral blood mononuclear cells (PBMCs) derived from non-transgenic goats that lack PrPC (PRNPTer/Ter) compared with cells from normal (PRNP+/+) goats. Spermatozoa were analyzed for freeze tolerance, DNA integrity, viability, motility, ATP levels, and acrosome intactness at rest and after acute stress, induced by Cu2+ ions, as well as levels of reactive oxygen species (ROS) after exposure to FeSO4 and H2O2. Surprisingly, PrPC-negative spermatozoa reacted similarly to normal spermatozoa in all read-outs. Moreover, in vitro exposure of PBMCs to Doxorubicin, H2O2 and methyl methanesulfonate (MMS), revealed no effect of PrPC on cellular survival or global accumulation of DNA damage. Similar results were obtained with human neuroblastoma (SH-SY5Y) cell lines stably expressing varying levels of PrPC. RNA sequencing of PBMCs (n = 8 of PRNP+/+ and PRNPTer/Ter) showed that basal level expression of genes encoding DNA repair enzymes, ROS scavenging, and antioxidant enzymes were unaffected by the absence of PrPC. Data presented here questions the in vitro cytoprotective roles previously attributed to PrPC, although not excluding such functions in other cell types or tissues during inflammatory stress.
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Affiliation(s)
- Malin R Reiten
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Giulia Malachin
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Elisabeth Kommisrud
- Faculty of Education and Natural Sciences, Inland University of Applied Sciences, Hamar, Norway
| | - Gunn C Østby
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Karin E Waterhouse
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway.,Spermvital AS Holsetgata, Hamar, Norway
| | - Anette K Krogenæs
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Anna Kusnierczyk
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - Clara M O Jalland
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Liv Heidi Nekså
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Susan S Røed
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Else-Berit Stenseth
- Faculty of Education and Natural Sciences, Inland University of Applied Sciences, Hamar, Norway
| | - Frøydis D Myromslien
- Faculty of Education and Natural Sciences, Inland University of Applied Sciences, Hamar, Norway
| | - Teklu T Zeremichael
- Faculty of Education and Natural Sciences, Inland University of Applied Sciences, Hamar, Norway
| | - Maren K Bakkebø
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Arild Espenes
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Michael A Tranulis
- Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
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23
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Lee JH. Male reproductive cycle of hibernating Korean greater horseshoe bat, Rhinolophus ferrumequinum korai(Chiroptera: Rhinolophidae): annual cycle of the seminiferous epithelium and morphological changes of the testes. THE EUROPEAN ZOOLOGICAL JOURNAL 2018. [DOI: 10.1080/24750263.2018.1447029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Affiliation(s)
- Jung-Hun Lee
- Department of Sport Science, Kyungnam University, Changwon-si, Republic of Korea
- Department of Science Education, Kyungnam University, Changwon-si, Republic of Korea
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24
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Santos JD, Eufrasio RO, Pinheiro GF, Alves FR, Carvalho MA, Machado Júnior AA. Influência da estação do ano sobre a estrutura testicular em ovinos explorados no sul do Estado do Piauí. PESQUISA VETERINÁRIA BRASILEIRA 2015. [DOI: 10.1590/s0100-736x2015001100010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO: Objetivou-se avaliar a influência da estação do ano sobre a estrutura testicular de ovinos SRD. Foram utilizados 10 animais com idade entre dois e três anos. Os testículos foram seccionados e fixados em solução de Bouin por 24h. Os fragmentos foram submetidos ao processamento histológico, emblocados em parafina e corados com hematoxilina eosina. Foram avaliadas a proporção volumétrica dos compartimentos testiculares, o diâmetro dos túbulos seminíferos, altura do epitélio seminífero e frequências dos estágios do ciclo do epitélio seminíferos. Os dados foram submetidos à análise de variância a 5% de probabilidade, do programa estatístico SAS 9.0. Os resultados revelaram todos os valores pesquisados sofreram influência da estação do ano. O valor do diâmetro tubular foi de 143,98±17,83 e 170,37±26,64μm, a altura do epitélio seminífero foi de 44,92±9,23 e 50,06±13,61μm e a proporção volumétrica foi de 78,32±13,68 e 80,13±15,14% nos períodos seco e chuvoso, respectivamente. A quantificação das células germinativas e de Sertoli mostrou todos os valores foram maiores no período chuvoso quando comparados com o seco. Concluiu-se que a estação do ano interferiu na estrutura testicular, tendo em vista que todos os valores da proporção volumétrica dos componentes testiculares mostraram diferença significativa entre as estações do ano, pois os valores foram mais acentuados no período chuvoso.
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Expression of insulin-like factor 3 hormone-receptor system in the reproductive organs of male goats. Cell Tissue Res 2015; 362:407-20. [PMID: 26017634 DOI: 10.1007/s00441-015-2206-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 04/24/2015] [Indexed: 10/23/2022]
Abstract
Relaxin-like factor (RLF), generally known as insulin-like factor 3 (INSL3), is essential for testis descent during fetal development. However, its role in adult males is not fully understood. We investigate the function of INSL3 in male Saanen goats by identifying cell types expressing its receptor, relaxin/insulin-like family peptide receptor (RXFP)2 and by characterizing the developmental expression pattern of INSL3 and RXFP2 and the binding of INSL3 to target cells in the male reproductive system. A highly specific RXFP2 antibody that co-localizes with an anti-FLAG antibody in HEK-293 cells recognizes RXFP2-transcript-expressing cells in the testis. INSL3 and RXFP2 mRNA expression is upregulated in the testis, starting from puberty. INSL3 mRNA and protein expression has been detected in Leydig cells, whereas RXFP2 mRNA and protein localize to Leydig cells, to meiotic and post-meiotic germ cells and to the epithelium and smooth muscle of the cauda epididymis and vas deferens. INSL3 binds to all of these tissues and cell types, with the exception of Leydig cells, in a hormone-specific and saturable manner. These results provide evidence for a functional intra- and extra-testicular INSL3 ligand-receptor system in adult male goats.
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Yi MJ, Lee JH. Seminiferous Epithelium Cycle in Bombina orientalis. Dev Reprod 2015; 19:1-10. [PMID: 25949204 DOI: 10.12717/devrep.2015.19.1.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 12/20/2014] [Accepted: 02/03/2015] [Indexed: 11/17/2022]
Abstract
The purpose of the present study was to examine the seminiferous epithelium cycle of Bombina orientalis using a light microscope. The cycle was divided into a total of 10 stages, according to the morphological characteristics of the cells. The spermatogenetic cells included primary spermatogonia, secondary spermatogonia, primary spermatocytes, secondary spermatocytes, spermatid and sperm. At stage I, the primary spermatogonia was located closer to basal lamina of the seminiferous tubule without spermatocyst formations. Especially at the stage II, the secondary spermatogonia were located in the spermatocyst. The primary and secondary spermatocytes were found from stages III to VI. The secondary spermatocytes were smaller in size than the primary spermatocytes, but they had thicker nucleoplasm and smaller nuclei. The round-shaped, early sperm cells were formed in stage VII, and further divided at stage VIII to have more concentrated nucleoplasm before division to matured sperm cells. At stage X, the matured sperm cells emerged from the spermatocyst. Considering the above results, this study presented the special characteristics in the generation and type of sperm formation. The germ cell formation occurred in various stages, like the perspectives of Franca et al (1999), ultimately, providing taxonomically useful information.
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Affiliation(s)
- Min-Joo Yi
- Graduate School of Education, Kyungnam University, Changwon 631-701, Korea
| | - Jung-Hun Lee
- Dept. of Science Education, Kyungnam University, Changwon 631-701, Korea
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Growth, testis size, spermatogenesis, semen parameters and seminal plasma and sperm membrane protein profile during the reproductive development of male goats supplemented with de-oiled castor cake. Reprod Toxicol 2015; 53:152-61. [PMID: 25883025 DOI: 10.1016/j.reprotox.2015.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 03/30/2015] [Accepted: 04/06/2015] [Indexed: 11/23/2022]
Abstract
The present study was conducted to evaluate the effect of de-oiled castor cake on reproductive traits of crossbreed goats. Fourteen males were grouped into two lots (n = 7/group), as described: group without de-oiled castor cake (WCC) and group fed with de-oiled castor cake (CC). Goats received two diets containing a mixture of Bermudagrass hay and concentrates with the same energy (73% total digestive nutrients) and protein content (15% crude protein) during 150 days, corresponding to ages from 40 (puberty) to 60 weeks. Blood plasma concentrations of urea, albumin, lactate dehydrogenase, creatinine, alanine aminotransferase and testosterone were determined. We also evaluated scrotal circumference, sperm parameters, quantitative aspects of spermatogenesis and daily sperm production (DSP), as well as the proteome of seminal plasma and sperm membrane. Seminal fluid and sperm proteins were analyzed by 2D SDS-PAGE and mass spectrometry. After 150 days of castor cake feeding, animals had no changes in the biochemical composition of blood plasma, suggesting the absence of intoxication by ingestion of ricin. There were no alterations in dry mater intake, weight gain, testis size, peripheral concentrations of testosterone, sperm concentration, motility and morphology. Sertoli and germ cell populations in the testis and DSP were not affected either. However, there were significant variations in the expression of five seminal plasma proteins and four sperm membrane proteins. In conclusion, the replacement of soybean meal by castor cake (with ricin concentrations of 50mg/kg) did not interfere with the growth and core reproductive development of male goats. However, the diet with ricin altered the expression of certain seminal plasma and sperm membrane proteins, which play roles in sperm function and fertilization. Lower expression of these proteins may impair the ricin-fed animals to perform as high-fertility sires.
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Vázquez A, Cedillo M, Quezada V, Rivas A, Morales E, Ayala E, Hernández M, González R, Aragón M. Effects of repeated electroejaculations on kinematic sperm subpopulations and quality markers of Mexican creole goats. Anim Reprod Sci 2015; 154:29-38. [DOI: 10.1016/j.anireprosci.2014.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/24/2014] [Accepted: 12/03/2014] [Indexed: 11/17/2022]
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Abstract
The purpose of the present study was to examine the seminiferous epithelium cycle of Bombina orientalis using a light microscope. The cycle was divided into a total of 10 stages, according to the morphological characteristics of the cells. The spermatogenetic cells included primary spermatogonia, secondary spermatogonia, primary spermatocytes, secondary spermatocytes, spermatid and sperm. At stage I, the primary spermatogonia was located closer to basal lamina of the seminiferous tubule without spermatocyst formations. Especially at the stage II, the secondary spermatogonia were located in the spermatocyst. The primary and secondary spermatocytes were found from stages III to VI. The secondary spermatocytes were smaller in size than the primary spermatocytes, but they had thicker nucleoplasm and smaller nuclei. The round-shaped, early sperm cells were formed in stage VII, and further divided at stage VIII to have more concentrated nucleoplasm before division to matured sperm cells. At stage X, the matured sperm cells emerged from the spermatocyst. Considering the above results, this study presented the special characteristics in the generation and type of sperm formation. The germ cell formation occurred in various stages, like the perspectives of Franca et al (1999), ultimately, providing taxonomically useful information.
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Affiliation(s)
- Min-Joo Yi
- Graduate School of Education, Kyungnam University, Changwon 631-701, Korea
| | - Jung-Hun Lee
- Dept. of Science Education, Kyungnam University, Changwon 631-701, Korea
- Corresponding Author : Jung-Hun Lee, Dept. of Science Education, Kyungnam University, 449 Woryeong-dong Masanhappo-gu, Changwon-si, Gyeongsangnam-do, 631-701, Korea. Tel. : +82-55-249-2243, Fax : +82-55-999-2150, E-mail :
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Morphologic and proliferative characteristics of goat type A spermatogonia in the presence of different sets of growth factors. J Assist Reprod Genet 2014; 31:1519-31. [PMID: 25194750 DOI: 10.1007/s10815-014-0301-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 07/16/2014] [Indexed: 01/15/2023] Open
Abstract
PURPOSE The present study by using different growth factors was aimed to develop the best practical culture condition for purification of goat undifferentiated SSCs and their colonization under in vitro and in vivo conditions. METHODS The enzymatically isolated SSCs obtained from one month old goat testes were cultured in DMEM plus FCS supplemented with different sets of growth factors (GDNF, LIF, bFGF, and EGF) for 2 weeks. At the end of each week, the morphological characteristics of cells and colonies alongside with purification rate of undifferentiated type A spermatogonia were evaluated by immunocytochemical staining and flow cytometry. RESULTS The number and size of colonies in treatment groups were significantly (P < 0.01) higher than corresponding values in control group. In immunocytochemical evaluation, the proportion of KIT and PGP9.5 positive cells were significantly (P < 0.001) higher in control and treatment groups, respectively. CONCLUSIONS The culture medium comprising all four growth factors, especially the one supplemented with the higher concentration of GDNF, was superior to the other groups with respect to the population of undifferentiated type A spermatogonia and its propagation in culture system. Additionally, goat SSCs could colonize within the mouse testis following xenotransplantation.
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Faucette AN, Maher VA, Gutierrez MA, Jucker JM, Yates DC, Welsh TH, Amstalden M, Newton GR, Nuti LC, Forrest DW, Ing NH. Temporal changes in histomorphology and gene expression in goat testes during postnatal development. J Anim Sci 2014; 92:4440-8. [PMID: 25085396 DOI: 10.2527/jas.2014-7903] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Testicular cell proliferation and differentiation is critical for development of normal testicular function and male reproductive maturity. The objective of the current study was to evaluate histoarchitecture and expression of genes marking specific cells and important functions as well as testosterone production of the developing goat testes. Testes were harvested from Alpine bucks at 0, 2, 4, 6, and 8 mo of age (n = 5/age group). Paired testes weight increased from 2 to 4 (P < 0.001) and 4 to 6 mo (P < 0.01). The greatest increases in seminiferous tubule and lumen diameters and height of the seminiferous epithelium occurred between 2 and 4 mo (P < 0.001). Genes expressed in haploid germ cells (Protamine1 [PRM1], Outer Dense Fiber protein 2 [ODF2], and Stimulated by Retinoic Acid gene 8 [STRA8]) increased dramatically at the same time (P < 0.001). Expression of other genes decreased (P < 0.05) during testicular maturation. These genes included P450 side chain cleavage (CYP11A1), Sex determining region Y-box 9 (SOX9), Insulin-like Growth Factor 1 Receptor (IGF1R), and Heat Shock Protein A8 (HSPA8). The Glutathione S-Transferase A3 (GSTA3) gene, whose product was recently recognized as a primary enzyme involved in isomerization of androstenedione in man and livestock species including goats, sheep, cattle, pigs, and horses, uniquely peaked in expression at 2 mo (P < 0.05). Follicle-Stimulating Hormone Receptor (FSHR) mRNA abundance tended to steadily decrease with age (P = 0.1), while Luteinizing Hormone Receptor (LHCGR) mRNA abundance in testes was not significantly different across the ages. Testosterone content per gram of testicular tissue varied among individuals. However, testosterone content per testis tended to increase at 6 mo (P = 0.06). In conclusion, major changes in cellular structure and gene expression in goat testes were observed at 4 mo of age, when spermatogenesis was initiated. Male goats mature rapidly and represent a good model species for the study of agents that enhance or impair development of testicular functions.
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Affiliation(s)
- A N Faucette
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - V A Maher
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - M A Gutierrez
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - J M Jucker
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - D C Yates
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - T H Welsh
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - M Amstalden
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - G R Newton
- Cooperative Agriculture Research Center, Prairie View A&M University, Prairie View, TX 77446
| | - L C Nuti
- Cooperative Agriculture Research Center, Prairie View A&M University, Prairie View, TX 77446
| | - D W Forrest
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
| | - N H Ing
- Department of Animal Science, Texas A&M University, Texas A&M AgriLife Research, College Station 77843-2471
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Samara EM, Okab AB, Abdoun KA, El-Waziry AM, Al-Haidary AA. Subsequent influences of feeding intact green seaweed Ulva lactuca to growing lambs on the seminal and testicular characteristics in rams. J Anim Sci 2013; 91:5654-67. [PMID: 24146153 DOI: 10.2527/jas.2013-6719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present experiment was designed to investigate the subsequent influences of supplementing different levels of intact green seaweed Ulva lactuca (0%, 3%, and 5% DM) to growing sexually immature lambs during the growth period (74 d) on the seminal and testicular characteristics of sexually mature rams. Ulva lactuca was manually collected, adequately prepared, and then incorporated into lambs' diets. Eighteen male 3-mo-old lambs of the Awassi breed with a mean BW of 22.57 kg (SD = 1.08) were randomly assigned into treatments. The obtained results indicate that offering Ulva lactuca at the level of 3% or 5% DM to lambs during the growth period had no subsequent impacts (P > 0.05) on liver and kidney functions as well as blood water balance in rams, thereby suggesting that Ulva lactuca can be safely supplemented to lambs during growing. However, our findings point out that feeding a lamb diet supplemented with intact Ulva lactuca failed to demonstrate any subsequent benefit (P > 0.05) on the growth performance, thermoregulatory responses, and plasma oxidative status in rams. Above all, it was clearly evident that supplementing intact Ulva lactuca to lambs had demonstrated subsequent negative influences (P < 0.05) on seminal and testicular characteristics of rams, more noticeably observed at the 5% DM inclusion rate than at 3%. These results were manifested by the inferior (P < 0.05) seminal quality, reduced (P < 0.05) testicular morphometry, changes (P < 0.05) in testicular histopathology, defective (P < 0.05) endocrine signaling, and increased (P < 0.05) seminal oxidative stress in rams fed diets supplemented with Ulva lactuca during the growth period compared to control rams. The deleterious impacts of feeding intact Ulva lactuca on spermatogenesis and germ cell loss were proven to be attributed to the dysfunction of Sertoli cells. Collectively, these results provide novel insights on the subsequent influences of dietary supplementation of intact Ulva lactuca to lambs. The consistent evidence of profound negative impacts on seminal and testicular characteristics as well as the resulting data of no improvement of subsequent growth, thermoregulation, and plasma oxidative status in rams prompts us to tentatively recommend the avoidance of feeding intact Ulva lactuca to lambs.
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Affiliation(s)
- E M Samara
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
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Morais DB, Cupertino MC, Goulart LS, Freitas KM, Freitas MB, Paula TA, Matta SL. Histomorphometric evaluation of the Molossus molossus (Chiroptera, Molossidae) testis: The tubular compartment and indices of sperm production. Anim Reprod Sci 2013; 140:268-78. [DOI: 10.1016/j.anireprosci.2013.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 06/07/2013] [Accepted: 06/11/2013] [Indexed: 11/27/2022]
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Lee JH. Seminiferous Epithelium Cycle and Developmental Stages of Spermatids in the Clethrionomys rufocanus. Dev Reprod 2013; 17:87-97. [PMID: 25949125 PMCID: PMC4282267 DOI: 10.12717/dr.2013.17.2.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 05/12/2013] [Accepted: 05/16/2013] [Indexed: 11/17/2022]
Abstract
The seminiferous epithelium cycle and developmental stages of spermatids in Clethrionomys rufocanus were observed under a light microscope. The seminiferous epithelium cycle was divided into 8 stages. Type Ad spermatogonia appeared through all stages. Type Ap, In, and B spermatogonia appeared in stages I, II, III, and IV. In the first meiosis prophase, the leptotene spermatocytes appeared from stage V, the zygotene spermatocytes in stages I, VI, VII, VIII, the pachytene spermatocytes from stages II to VI, the diplotene spermatocytes in stage VII. The meiotic figures and interkinesis spermatocytes were observed in stage VIII. Developing spermatids were subdivided into 10 steps, based on the morphological characteristics such as the acrosome formation changes in spermatozoa, nucleus, cytoplasm, and spermiation changes. The C. rufocanus spermatocytogenesis and spermiogenesis results displayed similar results with Apodemus agrarius coreae and A. speciosus peninsulae. Considering all the results, the spermatogenesis may be useful information to analyze the differentiation of spermatogenic cells and the breeding season.
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Affiliation(s)
- Jung-Hun Lee
- Department of Science Education, Kyungnam University, Changwon 631-701, Republic of Korea
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Ultrastructure of germ cells, Sertoli cells and mitochondria during spermatogenesis in mature testis of the Chinese Taihang black goats (Capra hircus). Micron 2013; 50:14-9. [PMID: 23618746 DOI: 10.1016/j.micron.2013.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 03/25/2013] [Accepted: 03/26/2013] [Indexed: 11/22/2022]
Abstract
The objective of this study was to describe the ultrastructure of germ cells, Sertoli cells and mitochondria in mature testis of the Chinese Taihang black goat. The characteristics of germ cell nucleus and mitochondria changing during spermatogenesis were investigated by transmission electron microscopy (TEM). The results showed that the spermatogonium was elliptical, and its nucleus was about 4-5 μm. The round mitochondria can be observed throughout the cytoplasm around the nucleus. Small patches of heterochromatin were distributed throughout the nucleus. Spermatocyte was oval-shaped with a nucleus of about 4-4.5 μm in diameter. The heterochromatin began to attach to the inner surface of the nuclear membrane. Spermatid was about 4 μm and oval in shape. Its nucleus was oval or round and approximately 2-3 μm in diameter. The borderline between nucleus membrane and karyoplasm was distinct. During spermiogenesis, spermatid nucleus was condensed and elongated, and chromatin reached the highest condensation in the mature spermatozoon. The mid-piece was surrounded by mitochondria at the neck region. The sperm tail showed the typical "9+2″ structure, contained axoneme and central singlet microtubules. The nuclei of the Sertoli cells were irregular shaped and showed indentations in the membrane. In the mature testes of goat bucks, abundant mitochondria were around the germ cells and Sertoli cells. The scattered mitochondria were aggregated around the base of the flagellum (axoneme) during the spermatid differentiation stage. In conclusion, the present study showed that the spermatogenic process of Taihang black goat followed the pattern of mammals with some specific.
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Pimenta J, Domingos A, Santos P, Marques CC, Cantante C, Santos A, Barbas JP, Baptista MC, Horta AEM, Viegas A, Mesquita P, Gonçalves J, Fontes CA, Prates JAM, Pereira RMLN. Is prnt a pseudogene? Identification of ram Prt in testis and ejaculated spermatozoa. PLoS One 2012; 7:e42957. [PMID: 22937002 PMCID: PMC3427297 DOI: 10.1371/journal.pone.0042957] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 07/16/2012] [Indexed: 11/18/2022] Open
Abstract
A hallmark of prion diseases or transmissible spongiform encephalopaties is the conversion of the cellular prion protein (PrP(C)), expressed by the prion gene (prnp), into an abnormally folded isoform (PrP(Sc)) with amyloid-like features that causes scrapie in sheep among other diseases. prnp together with prnd (which encodes a prion-like protein designated as Doppel), and prnt (that encodes the prion protein testis specific--Prt) with sprn (shadow of prion protein gene, that encodes Shadoo or Sho) genes, constitute the "prion gene complex". Whereas a role for prnd in the proper functioning of male reproductive system has been confirmed, the function of prnt, a recently discovered prion family gene, comprises a conundrum leading to the assumption that ruminant prnt is a pseudogene with no protein expression. The main objective of the present study was to identify Prt localization in the ram reproductive system and simultaneously to elucidate if ovine prnt gene is transcribed into protein-coding RNA. Moreover, as Prt is a prnp-related protein, the amyloid propensity was also tested for ovine and caprine Prt. Recombinant Prt was used to immunize BALB/c mice, and the anti-Prt polyclonal antibody (APPA) immune response was evaluated by ELISA and Western Blot. When tested by indirect immunofluorescence, APPA showed high avidity to the ram sperm head apical ridge subdomain, before and after induced capacitation, but did not show the same behavior against goat spermatozoa, suggesting high antibody specificity against ovine-Prt. Prt was also found in the testis when assayed by immunohistochemistry during ram spermatogenesis, where spermatogonia, spermatocytes, spermatids and spermatozoa, stained positive. These observations strongly suggest ovine prnt to be a translated protein-coding gene, pointing to a role for Prt protein in the ram reproductive physiology. Besides, caprine Prt appears to exhibit a higher amyloid propensity than ovine Prt, mostly associated with its phenylalanine residue.
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Affiliation(s)
- Jorge Pimenta
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisboa, Portugal
| | - Ana Domingos
- IHMT-CMDT – Instituto de Higiene e Medicina Tropical, Centro de Malária e Doenças Tropicais, Lisboa, Portugal
| | - Pedro Santos
- Hospital Universitário de Coimbra, Coimbra, Portugal
| | - Carla C. Marques
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
| | - Cátia Cantante
- Unidade de Retrovírus e Infecções Associadas (URIA), ADEIM-Centro de Patogénese Molecular/Instituto de Medicina Molecular (IMM), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Ana Santos
- Unidade de Retrovírus e Infecções Associadas (URIA), ADEIM-Centro de Patogénese Molecular/Instituto de Medicina Molecular (IMM), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - João P. Barbas
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
| | - Maria C. Baptista
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
| | - António E. M. Horta
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
| | - Aldino Viegas
- REQUIMTE/CQFB Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Patrícia Mesquita
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
| | - João Gonçalves
- Unidade de Retrovírus e Infecções Associadas (URIA), ADEIM-Centro de Patogénese Molecular/Instituto de Medicina Molecular (IMM), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Carlos A. Fontes
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisboa, Portugal
| | - José A. M. Prates
- CIISA, Faculdade de Medicina Veterinária (FMV), Universidade Técnica de Lisboa, Lisboa, Portugal
| | - Rosa M. L. N. Pereira
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, Instituto Nacional dos Recursos Biológicos (INRB) L-INIA Santarém, Quinta da Fonte Boa, Vale de Santarém, Portugal
- Escola Universitária Vasco da Gama, Coimbra, Portugal
- * E-mail:
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Machado Júnior A, Oliveira L, Assis Neto A, Alves F, Miglino M, Carvalho M. Spermatogenesis in goats with and without scrotum bipartition. Anim Reprod Sci 2012; 130:42-50. [DOI: 10.1016/j.anireprosci.2011.12.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 11/15/2022]
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Costa KLC, da Matta SLP, de Lucca Moreira Gomes M, de Paula TAR, de Freitas KM, de Araújo Resende Carvalho F, de Assis Silveira J, Dolder H, Chamindrani Mendis-Handagama SML. Histomorphometric evaluation of the neotropical brown brocket deer Mazama gouazoubira testis, with an emphasis on cell population indexes of spermatogenic yield. Anim Reprod Sci 2011; 127:202-12. [PMID: 21889273 DOI: 10.1016/j.anireprosci.2011.07.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 07/11/2011] [Accepted: 07/22/2011] [Indexed: 10/17/2022]
Abstract
Information on the reproductive biology of neotropical cervids is scarce. Therefore, the aim of this study was to perform biometric, histologic and stereologic analyses of the brown brocket deer Mazama gouazoubira testis, with an emphasis on the intrinsic yield and the Sertoli cell index. Seven adult males kept in captivity were used. The animals were immobilized; anesthetized and testicle fragments were obtained by biopsy incision. The material was fixed, processed and examined by routine histological methods for light microscopy. The average body weight was 17.2kg, from which 0.40% were allocated in gonads and 0.33% in seminiferous tubules, which represented 85.9% of the testis parenchyma. The mean albuginea width and volume were 345.7μm and 3.5mL (5.3% of the testicular weight), respectively. The mean mediastinum volume of both testicles was 1.0mL (1.5% of the testicular weight) and the testicular parenchyma volume corresponded to 93.1% of total testicular weight (64.9g). The seminiferous tubules diameter was 224.4μm, while the epithelium height was 69.6μm. On average, an adult brown brocket deer showed a total of 1418m of seminiferous tubules in both testicles (21.5m per gram of testis). Each stage I seminiferous tubular cross section contained 1.10 type A spermatogonia, 13.4 primary spermatocytes in pre-leptotene/leptotene, 13.7 spermatocytes in pachytene, 48.8 round spermatids and 3.7 Sertoli cells. The general yield of spermatogenesis was 44.7 cells and the Sertoli cell index was 13.2. The qualitative and quantitative description of testicular histology of brown brocket deer help to understand its spermatogenic process and to establish parameters for the reproductive biology of this wild species. Furthermore, the data from the present research will help further studies using other species of Brazilian cervids, especially endangered ones, making an additional effort to the species preservation.
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39
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Daily sperm production and testicular morphometry in goats according to external scrotal conformation. Anim Reprod Sci 2011; 127:73-7. [DOI: 10.1016/j.anireprosci.2011.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 06/17/2011] [Accepted: 06/27/2011] [Indexed: 11/21/2022]
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40
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Azevedo MHFD, Paula TARD, Matta SLPD, Fonseca CC, Costa EPD, Costa DS, Peixoto JV. Cell population indexes of spermatogenic yield and testicular sperm reserves in adult jaguars (Panthera onca). Anim Reprod Sci 2010; 118:83-8. [DOI: 10.1016/j.anireprosci.2009.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Revised: 05/14/2009] [Accepted: 05/26/2009] [Indexed: 10/20/2022]
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41
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Evaluation of the seminiferous epithelial cycle, spermatogonial kinetics and niche in donkeys (Equus asinus). Anim Reprod Sci 2009; 116:139-54. [DOI: 10.1016/j.anireprosci.2008.12.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 12/17/2008] [Accepted: 12/23/2008] [Indexed: 11/18/2022]
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42
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de Barros JBG, de Paula TAR, da Matta SLP, Fonseca CC, Leite FLG, Rossi JL, de Oliveira PC, da Costa EP. Sertoli cell index and spermatic reserves in adult captive African lions (Panthera leo, Linnaeus, 1758). Anim Reprod Sci 2007; 102:350-6. [PMID: 17499460 DOI: 10.1016/j.anireprosci.2007.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2006] [Accepted: 04/05/2007] [Indexed: 11/28/2022]
Abstract
The intrinsic yield of spermatogenesis and the supporting indexes of the Sertoli cells are the best indicators for the spermatic production capacity in a species. The aim of the present study was to quantify the intrinsic yield of the spermatogenetic process, as well as the Sertoli cell index and spermatic reserves. Testicular fragments of five adult African lions was fixed in 4% glutaric aldehyde, dehydrated at increasing alcohol concentrations, included into hydroxyethyl methacrylate, and were cut into 4 microm thickness. In the seminiferous epithelium of the African lions, 10.3 primary spermatocytes at pre-leptotene phase are produced by the type-A spermatogonia. During meiotic divisions, only 2.7 spermatids were produced from the primary spermatocytes. The general spermatogenesis production in the African lions was approximately 22.1 cells, and each Sertoli cell was able to sustain and maintain approximately 14.9 cells of the germinative line, from which 7.9 are round spermatids. A total of 103x10(6) spermatozoa are produced by each testis gram at each cycle of the seminiferous epithelium. The spermatic reserve of lion is below the amplitude observed in mammals.
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43
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Boiani L, Casanova G, Olivera A, Berois N. Seminiferous epithelium cycle of a hantavirus reservoir, the long-tailed mouse Oligoryzomys flavescens (Rodentia-Cricetidae). Tissue Cell 2007; 39:267-75. [PMID: 17675200 DOI: 10.1016/j.tice.2007.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 05/10/2007] [Accepted: 05/28/2007] [Indexed: 11/23/2022]
Abstract
Oligoryzomys flavescens, a common rodent of the temperate regions of South America, has been identified as a Hantavirus reservoir. There is still little information concerning its reproductive biology, which is essential to devise effective control measurement of natural populations. This rodent is a seasonal breeder and adult males exhibit a short period of testicular regression during winter months (June-August). In the present study we provided a histological and ultrastructural analysis of the composition of the testis of sexually mature O. flavescens during the breeding season. Over 95% of the testicular parenchyma was occupied by the seminiferous tubules and less than 5% by the interstitial tissue. The mean tubular diameter and epithelium height were 147.2 and 57.8 microm, respectively. The spermatogenic wave was characterized and eight spermatogenesis stages were identified according to the tubular morphology method. Their length, estimated as their relative frequencies, were (I-VIII) 8.8, 14.9, 4.0, 5.0, 10.4, 5.8, 27.0, and 23.9. Ultrastructural features of spermiogenesis are shown for the first time in a sigmodontine rodent.
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Affiliation(s)
- L Boiani
- Sección Biología Celular, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.
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44
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Parapanov R, Nusslé S, Hausser J, Vogel P. Histological description of seminiferous epithelium and cycle length of spermatogenesis in the water shrew Neomys fodiens (Mammalia: Soricidae). Anim Reprod Sci 2007; 107:148-60. [PMID: 17629637 DOI: 10.1016/j.anireprosci.2007.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Revised: 05/22/2007] [Accepted: 06/01/2007] [Indexed: 11/19/2022]
Abstract
Recently, we examined the spermatogenesis cycle length in two shrews species, Sorex araneus characterized by a very high metabolic rate and a polyandric mating system (sperm competition) resulting in a short cycle and Crocidura russula characterized by a much lower metabolic rate and a monogamous mating system showing a longer cycle. In this study, we investigated the spermatogenesis cycle in Neomys fodiens showing an intermediate metabolic rate. We described the stages of seminiferous epithelium according to the spermatid morphology method and we calculated the cycle length of spermatogenesis using incorporation of 5-bromodeoxyuridine into DNA of the germ cells. Twelve males were injected intraperitoneally with 5-bromodeoxyuridine, and the testes were collected. For cycle length determination, we applied a recently developed statistical method. The calculated cycle length is 8.69 days and the total duration of spermatogenesis based on 4.5 cycles is approximately 39.1 days, intermediate between the duration of spermatogenesis of S. araneus (37.6 days) and C. russula (54.5 days) and therefore congruent with both the metabolic rate hypothesis and the sperm competition hypothesis. Relative testes size of 1.4% of body mass indicates a promiscuous mating system.
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Affiliation(s)
- Roumen Parapanov
- Department of Ecology and Evolution, University of Lausanne, CH-1015 Lausanne, Switzerland.
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45
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Parapanov R, Nusslé S, Vogel P. Cycle Length of Spermatogenesis in Shrews (Mammalia: Soricidae) with High and Low Metabolic Rates and Different Mating Systems1. Biol Reprod 2007; 76:833-40. [PMID: 17267697 DOI: 10.1095/biolreprod.106.058073] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The aim of the present study was to establish and compare the durations of the seminiferous epithelium cycles of the common shrew Sorex araneus, which is characterized by a high metabolic rate and multiple paternity, and the greater white-toothed shrew Crocidura russula, which is characterized by a low metabolic rate and a monogamous mating system. Twelve S. araneus males and fifteen C. russula males were injected intraperitoneally with 5-bromodeoxyuridine, and the testes were collected. For cycle length determinations, we applied the classical method of estimation and linear regression as a new method. With regard to variance, and even with a relatively small sample size, the new method seems to be more precise. In addition, the regression method allows the inference of information for every animal tested, enabling comparisons of different factors with cycle lengths. Our results show that not only increased testis size leads to increased sperm production, but it also reduces the duration of spermatogenesis. The calculated cycle lengths were 8.35 days for S. araneus and 12.12 days for C. russula. The data obtained in the present study provide the basis for future investigations into the effects of metabolic rate and mating systems on the speed of spermatogenesis.
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Affiliation(s)
- Roumen Parapanov
- Department of Ecology and Evolution, University of Lausanne, CH-1015 Lausanne, Switzerland.
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46
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Costa DS, Menezes CMC, Paula TAR. Spermatogenesis in white-lipped peccaries (Tayassu pecari). Anim Reprod Sci 2007; 98:322-34. [PMID: 16647229 DOI: 10.1016/j.anireprosci.2006.03.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2006] [Accepted: 03/20/2006] [Indexed: 11/28/2022]
Abstract
We describe here morphological and functional analyses of the spermatogenic process in sexually mature white-lipped peccaries. Ten sexually mature male animals, weighing approximately 39 kg were studied. Characteristics investigated included the gonadosomatic index (GSI), relative frequency of stages of the cycle of seminiferous epithelium (CSE), cell populations present in the seminiferous epithelium in stage 1 of CSE, intrinsic rate of spermatogenesis, Sertoli cell index, height of seminiferous epithelium and diameter of seminiferous tubules, volumetric proportion of components of the testicular parenchyma and length of seminiferous tubules per testis and per gram of testis. The GSI was 0.19%, relative frequencies of pre-meiotic, meiotic and post-meiotic phases were, respectively 43.6%, 13.8% and 42.6%, general rate of spermatogenesis was 25.8, each Sertoli cell supported an average 18.4 germinative cells, height of seminiferous epithelium and diameter of seminiferous tubules were, respectively, 78.4 microm and 225.6 microm, testicular parenchyma was composed by 75.8% seminiferous tubules and 24.2% intertubular tissue, and length of seminiferous tubules per gram of testis was 15.8m. These results show that, except for overall rate of spermatogenesis, the spermatogenic process in white-lipped peccaries is very similar to that of collared peccaries, and that Sertoli cells have a greater capacity to support germinative cells than most domestic mammals.
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Affiliation(s)
- Deiler S Costa
- State University of North Fluminense, CCTA/LSA, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602, Brazil.
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47
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Almeida FFL, Leal MC, França LR. Testis Morphometry, Duration of Spermatogenesis, and Spermatogenic Efficiency in the Wild Boar (Sus scrofa scrofa)1. Biol Reprod 2006; 75:792-9. [PMID: 16870941 DOI: 10.1095/biolreprod.106.053835] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The wild boar is a natural inhabitant of Europe, Asia, and North Africa and is phylogenetically the ancestor of the domestic pig. Because of its phylogenetic and economic importance, this species is an interesting model for studying testis function in boars. Therefore, the present study was performed to investigate the testis structure, spermatogenic cycle length, and Sertoli cell (SC) and spermatogenic efficiencies in eight adult wild boars. Each spermatogenic cycle lasted 9.05 days, and the total duration of spermatogenesis was estimated as lasting approximately 41 days. The percentages of testis volume occupied by seminiferous tubules and by Leydig cells were 87% and 6%, respectively. The mean number of SCs per gram of testis was 42 million. The SC (round spermatids per SC) and spermatogenic (daily sperm production per gram of testis) efficiencies were 6.6 cells and 28.6 million, respectively. In general, the testis structure, overall germ cell associations at the different stages of the seminiferous epithelium cycle, and duration of spermatogenesis in the wild boar were similar to those in domestic pigs. Probably because of the small size of Leydig cells (400 microm3), their number per gram of testis (157 million) was the highest among investigated mammalian species. Although the SC efficiency in wild boars was low, their spermatogenic efficiency was comparable to that observed in domestic pigs, mainly because of the higher number of SCs per gram of testis in wild boars. These data suggest that SCs became more efficient during evolution, genetic selection, and domestication in pigs.
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Affiliation(s)
- Fernanda F L Almeida
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil 31270-901
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Espenes A, Harbitz I, Skogtvedt S, Fuglestveit R, Berg KA, Dick G, Krogenaes A, Tranulis MA. Dynamic expression of the prion-like protein Doppel in ovine testicular tissue. ACTA ACUST UNITED AC 2006; 29:400-8. [PMID: 16390495 DOI: 10.1111/j.1365-2605.2005.00618.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Transgenic knockout of the gene encoding the prion-like protein Doppel (Dpl) leads to male infertility in mice. The precise role of Dpl in male fertility is still unclear, but sperm from Dpl-deficient mice appear to be unable to undergo the normal acrosome reaction that is necessary to penetrate the zona pellucida of the ovum. We have investigated the expression pattern and some biochemical properties of Dpl in sheep testicular tissue and spermatozoa. Neither the Dpl protein nor its mRNA was detected in pre-pubertal sheep testis. This was in contrast to the findings in adult rams where both Dpl mRNA and protein were present. The molecular mass and glycosylation pattern of sheep Dpl were similar to that of mice Dpl. The Dpl protein was detected in the seminiferous epithelium during the two final (7 and 8) and the two initial (1 and 2) stages of the spermatogenic cycle in a characteristic pattern. In stage 8, an intense brim of granular Dpl-immunoreactivity associated with maturation phase spermatids was observed, while after the release of spermatozoa in stages 1 and 2, the Dpl-staining was disseminated more diffusely in the epithelium, reaching the basal lamina. From stage 3 to stage 6, Dpl-immunoreactivity could not be detected, indicating that the Dpl protein had disappeared between stages 2 and 3. Dpl was not detected on ejaculated spermatozoa. These patterns of staining indicate that Dpl is enriched in residual bodies, which are phagocytosed and destroyed by Sertoli cells after release of sperm into the lumen of the seminiferous tubule.
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Affiliation(s)
- Arild Espenes
- Department of Basic Sciences and Aquatic Medicine, Norwegian School of Veterinary Science, Oslo, Norway
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49
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Leite FLG, de Paula TAR, da Matta SLP, Fonseca CC, das Neves MTD, de Barros JBG. Cycle and duration of the seminiferous epithelium in puma (Puma concolor). Anim Reprod Sci 2006; 91:307-16. [PMID: 15923093 DOI: 10.1016/j.anireprosci.2005.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2004] [Revised: 04/01/2005] [Accepted: 04/08/2005] [Indexed: 11/25/2022]
Abstract
Puma or sussuarana (Puma concolor) is the second largest feline in the American continent and has an ample latitudinal distribution in very diverse habitats. In relation to its conservation status, the puma is considered an extinction-threatened species. The study of the testis morphology and the spermatogenic process in a species is fundamental for establishing the physiologic patterns that will make possible the selection of the protocols for assisted reproduction. A number of peculiarities associated with the reproductive biology of specific species such as the duration of spermatogenic process can be used to determine the frequency of sperm collection. Nine adult male pumas maintained in captivity were used to determine the relative frequency of stages in the seminiferous epithelium cycle. Three of them received intra-testicular injections of 0.1ml tritiated thymidine to determine the duration of the seminiferous epithelium cycle, and were subjected to biopsy 7 days later. The cycle of the seminiferous epithelium in puma was didactically described into eight stages by the tubular morphology method. The total duration of one seminiferous epithelium cycle in puma was calculated to be 9.89 days, and approximately 44.5 days are required for development of spermatozoon from spermatogonia. The duration of spermiogenesis, prophase and other events of meiosis were 14.08, 15.20 and 1.79 days, respectively. The relative frequency of the pre-meiotic, meiotic and post-meiotic phases were 3.98, 1.79 and 4.12 days, respectively.
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50
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Nakai M, Van Cleeff JK, Bahr JM. Stages and duration of spermatogenesis in the domestic ferret (Mustela putorius furo). Tissue Cell 2005; 36:439-46. [PMID: 15533459 DOI: 10.1016/j.tice.2004.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2004] [Revised: 07/20/2004] [Accepted: 08/02/2004] [Indexed: 10/26/2022]
Abstract
Classification of seminiferous tubules is the basis for understanding normal and abnormal spermatogenesis. The aim of the present study was to determine spermatogenic stages and the duration of the cycle in the domestic ferret using bromodeoxyuridine (BrdU) as a tracer. Eleven adult male ferrets that were maintained in a breeding condition were used. Testicular sections were stained with the periodic acid-Schiff reaction for light microscopy. To determine the cycle duration, six ferrets were injected intraperitoneally with BrdU, and testes were collected 3h later and 10 days and 3h later. BrdU was detected by immunohistochemistry. Seminiferous tubules were classified into eight stages, and frequencies of stages I-VIII were 10.6, 2.2, 7.9, 13.1, 22.3, 21.9, 14.0 and 8.0%, respectively. The most advanced BrdU-labeled cells at 3h post-injection were leptotene spermatocytes in stage VI and those at 10 days and 3h were pachytene spermatocytes in stage V. From differences in stage frequency and BrdU staining frequency between two time points, the duration of one cycle was estimated to be 13.0 days. The present observations indicate that stages and the cycle duration of the ferret spermatogenesis are similar to those reported in other carnivores.
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Affiliation(s)
- M Nakai
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, 1207 West Gregory Drive, Urbana, IL 61801, USA
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