1
|
Herbicht R, Neufeld G, Klein C, Henning H. Evaluation of a novel microfluidic chip-like device for purifying bovine frozen-thawed semen for in vitro fertilization. Theriogenology 2023; 209:50-59. [PMID: 37356279 DOI: 10.1016/j.theriogenology.2023.06.019] [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: 03/20/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
The aim of this study was to validate a novel sperm purification device, the VetCount™ Harvester, for use in bovine in vitro fertilization (IVF). The device's performance was compared to BoviPure™ gradient centrifugation, a commercially available and accepted routine technique. Semen quality parameters were assessed for frozen-thawed semen from six different bulls (n = 6) following sperm purification. For each bull two semen subsamples were purified utilizing BoviPure™ gradient centrifugation and the VetCount™ Harvester, including a third subsample as untreated control. Both treatments significantly increased the proportion of progressively motile sperm cells (84.4 ± 14.1% and 85.1 ± 7.8%, respectively) compared to the untreated semen (41.9 ± 18.8%). BoviPure™ gradient and VetCount™ Harvester selected predominantly viable acrosome intact (VAI) sperm cells with low membrane fluidity and low free intracellular calcium concentration [Ca2+]i (76.5 ± 4.4% and 78.6 ± 6.0%). Normalizing [Ca2+]i of VAI sperm cells (non-treated semen: [Ca2+]i = 1) VetCount™ Harvester purified spermatozoa (0.67 ± 0.10) showed significantly lower [Ca2+]i than BoviPure™ treated sperm (0.84 ± 0.14; P < 0.05). Subsequently, the fertilizing ability of the spermatozoa was evaluated performing a competitive fertilization assay. Sperm cells from both treatment groups were fluorescently labelled using different dyes and added in equal amounts to in vitro matured oocytes. After 18 h co-incubation, the origin of the fertilizing sperm cell was evaluated via fluorescence microscopy. In two bulls, VetCount™ Harvester selected sperm that fertilized significantly more oocytes then BoviPure™ treated sperm, in another bull it was the opposite. For three bulls no difference was observed. We conclude that the VetCount™ Harvester selects a high-quality, fertile sperm fraction from frozen-thawed bull semen. However, some considerations have to be kept in mind for the direct use of the isolated sperm fraction in IVF.
Collapse
Affiliation(s)
- Rebecca Herbicht
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany.
| | - Gregor Neufeld
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany
| | - Claudia Klein
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany
| | - Heiko Henning
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany
| |
Collapse
|
2
|
Xu B, Wang R, Wang Z, Liu H, Wang Z, Zhang W, Zhang Y, Su R, Liu Z, Liu Y, Li J, Zhang J. Evaluation of lipidomic change in goat sperm after cryopreservation. Front Vet Sci 2022; 9:1004683. [PMID: 36337197 PMCID: PMC9630556 DOI: 10.3389/fvets.2022.1004683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
The current study aimed to detect the relationship between the spermatozoa cryotolerance and the post-thawed sperm lipidome. Ejaculates from 20 goats, and performed a uniform frozen-thawed procedure in this study. According to the total motility of thawed sperm of goats, semen samples were classified into HF group (High Freezers, n = 8) with >60% total motility and LF group (Low Freezers, n = 8) with < 45% total motility. The lipidomic analysis based on UHPLC-MS/MS was utilized to investigate the relationship between sperm cryotolerance and their lipid metabolites expression. The results showed that the cryotolerance of sperm from different individual goats were in great variation. The total motility of post-thawed sperm in HF group (60.93 ± 2.43%) is significantly higher than that in LF group (34.04 ± 3.41%, P < 0.01). And the post-thawed sperm in HF group exhibited significantly higher plasma membrane (59.06 ± 2.34%) and acrosome integrity (62.93 ± 1.15%) than that in LF group (34.06 ± 4.85%, 44.92 ± 2.19% respectively, P < 0.01). The total of 29 lipid subclasses and 1,133 lipid molecules in the post-thawed goat sperm were identified by lipidomics analysis. The lipid content of thawed sperm in HF group was higher than that in LF group, the lipid profile in HF group was significantly separated from LF group, which indicated that the difference in lipid composition and lipid metabolism mode of sperm between the two groups was existed, especially the expression of phosphatidylcholine and triglyceride molecules. In conclusion, the cryotolerance of sperm from different individual goats were in great variation. Sperm with high cryotolerance may be able to uptake more lipids during cryopreservation. The increase in phosphatidylcholine and triglyceride content of thawed. Sperm may relate to more active lipid anabolic processes.
Collapse
Affiliation(s)
- Bingbing Xu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Ruijun Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Zhiying Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Hongfu Liu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Zhen Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Weihang Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Yanjun Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Rui Su
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Zhihong Liu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Yongbin Liu
- Research Center for Animal Genetic Resources of Mongolian Plateau, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jinquan Li
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
- Inner Mongolia Jinlai Animal Husbandry Technology Co., Ltd., Hohhot, China
- *Correspondence: Jinquan Li
| | - Jiaxin Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
- Jiaxin Zhang
| |
Collapse
|
3
|
Ikokide EJ, Oyagbemi AA, Oyeyemi MO. Impacts of cadmium on male fertility: Lessons learnt so far. Andrologia 2022; 54:e14516. [PMID: 35765120 DOI: 10.1111/and.14516] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/19/2022] [Accepted: 05/13/2022] [Indexed: 01/04/2023] Open
Abstract
Cadmium (Cd) is one of the most dangerous heavy metals in the world. Globally, toxicities associated with cadmium and its attendant negative impact on humans and animals cannot be under-estimated. Cd is a heavy metal, and people are exposed to it through contaminated foods and smoking. Cd exerts its deleterious impacts on the testes (male reproductive system) by inducing oxidative stress, spermatogenic cells apoptosis, testicular inflammation, decreasing androgenic and sperm cell functions, disrupting ionic homeostasis, pathways and epigenetic gene regulation, damaging vascular endothelium and blood testes barrier. In association with other industrial by-products, Cd has been incriminated for the recent decline of male fertility rate seen in both man and animals. Understanding the processes involved in Cd-induced testicular toxicity is vital for the innovation of techniques that will help ameliorate infertility in males. In this review, we summed up recent studies on the processes of testicular toxicity and male infertility due to Cd exposure. Also, the usage of different compounds including phytochemicals, and plant extracts to manage Cd reprotoxicity will be reviewed.
Collapse
Affiliation(s)
- Emmanuel Joseph Ikokide
- Department of Theriogenology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ademola Adetokunbo Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | | |
Collapse
|
4
|
Iruzubieta-Villagra L, Ramos I, Cisint S, Crespo CA, Fernández S. Calcium, Ca 2+-ATPase, Calmodulin, and Calbindin D-28KD Localization in Testis of Leptodactylus chaquensis (Anura: Leptodactylidae). MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-11. [PMID: 35297365 DOI: 10.1017/s1431927622000423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The intracellular localization of Ca2+, Ca2+-ATPase, Calmodulin, and Calbindin D-28KD have been studied in testes of the toad Leptodactylus chaquensis, using ultracytochemical and immunohistochemical techniques. The Ca2+ presences in the nucleus and into the mitochondria of the germ cells, together with the activity of Ca2+-ATPase detected in the nuclear envelope and mitochondrial crests, suggest the participation of this transporter in the storage of Ca2+. In Sertoli cells, Ca2+ deposits were also found in vesicles and lamellar bodies. Calmodulin and Calbindin D-28KD were revealed in the cytoplasm of both cell types. At the spermatozoon level, the cation deposits were located in the subacrosomal space and in the acrosomal vesicle. Ca2+-ATPase activity was observed in the acrosomal and plasma membranes of the gamete that suggests the existence of a transport system responsible for maintaining low cytoplasmic Ca2+ levels. The activity of Ca2+-ATPase and the location of Ca2+ deposits in gamete tail would be related to flagellar movement. The colocalization of Ca2+ deposits and their binding proteins in efferent duct cells would probably be associated with secretory activity. Considering that intracellular Ca2+ is present in different gonadal cells, this work would provide a better understanding of the cation importance in the testicular functions of this species.
Collapse
Affiliation(s)
- Lucrecia Iruzubieta-Villagra
- Facultad de Bioquímica, Química y Farmacia, Instituto de Biología, Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
| | - Inés Ramos
- Facultad de Bioquímica, Química y Farmacia, Instituto de Biología, Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
- Instituto Superior de Investigaciones Biológicas, Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
| | - Susana Cisint
- Facultad de Bioquímica, Química y Farmacia, Instituto de Biología, Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
| | - Claudia A Crespo
- Facultad de Bioquímica, Química y Farmacia, Instituto de Biología, Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
- Instituto Superior de Investigaciones Biológicas, Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
| | - Silvia Fernández
- Facultad de Bioquímica, Química y Farmacia, Instituto de Biología, Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
- Instituto Superior de Investigaciones Biológicas, Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Tucumán, Chacabuco 461, 4000S.M. de Tucumán, Argentina
| |
Collapse
|
5
|
Finkelstein M, Etkovitz N, Breitbart H. Ca 2+ signaling in mammalian spermatozoa. Mol Cell Endocrinol 2020; 516:110953. [PMID: 32712383 DOI: 10.1016/j.mce.2020.110953] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 06/08/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023]
Abstract
Calcium is an essential ion which regulates sperm motility, capacitation and the acrosome reaction (AR), three processes necessary for successful fertilization. The AR enables the spermatozoon to penetrate into the egg. In order to undergo the AR, the spermatozoon must reside in the female reproductive tract for several hours, during which a series of biochemical transformations takes place, collectively called capacitation. An early event in capacitation is relatively small elevation of intracellular Ca2+ (in the nM range) and bicarbonate, which collectively activate the soluble adenylyl cyclase to produce cyclic-AMP; c-AMP activates protein kinase A (PKA), leading to indirect tyrosine phosphorylation of proteins. During capacitation, there is an increase in the membrane-bound phospholipase C (PLC) which is activated prior to the AR by relatively high increase in intracellular Ca2+ (in the μM range). PLC catalyzes the hydrolysis of phosphatidyl-inositol-4,5-bisphosphate (PIP2) to diacylglycerol and inositol-trisphosphate (IP3), leading to activation of protein kinase C (PKC) and the IP3-receptor. PKC activates a Ca2+- channel in the plasma membrane, and IP3 activates the Ca2+- channel in the outer acrosomal membrane, leading to Ca2+ depletion from the acrosome. As a result, the plasma-membrane store-operated Ca2+ channel (SOCC) is activated to increase cytosolic Ca2+ concentration, enabling completion of the acrosome reaction. The hydrolysis of PIP2 by PLC results in the release and activation of PIP2-bound gelsolin, leading to F-actin dispersion, an essential step prior to the AR. Ca2+ is also involved in the regulation of sperm motility. During capacitation, the sperm develops a unique motility pattern called hyper-activated motility (HAM) which is essential for successful fertilization. The main Ca2+-channel that mediates HAM is the sperm-specific CatSper located in the sperm tail.
Collapse
Affiliation(s)
| | - Nir Etkovitz
- Sperm Bank, Sheba Hospital, Tel-Hashomer, Israel
| | - Haim Breitbart
- The Mina & Everard Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
| |
Collapse
|
6
|
Responsiveness to progesterone and potassium channel blockers 4-aminopyridine, tetraethylammonium and free Ca(2+) contentration in spermatozoa of patients with oligozoospermia/leucocytospermia. UKRAINIAN BIOCHEMICAL JOURNAL 2018. [DOI: 10.15407/ubj90.01.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
7
|
de Angelis C, Galdiero M, Pivonello C, Salzano C, Gianfrilli D, Piscitelli P, Lenzi A, Colao A, Pivonello R. The environment and male reproduction: The effect of cadmium exposure on reproductive function and its implication in fertility. Reprod Toxicol 2017; 73:105-127. [PMID: 28774687 DOI: 10.1016/j.reprotox.2017.07.021] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 07/11/2017] [Accepted: 07/26/2017] [Indexed: 12/22/2022]
Abstract
Cadmium is an environmental pollutant known as endocrine disruptor. Testis is particularly susceptible to cadmium, and testis injury occurs at high but even low levels of exposure. Cadmium reproductive toxicity is mediated by multiple mechanisms, including structural damage to testis vasculature and blood-testis barrier, inflammation, cytotoxicity on Sertoli and Leydig cells, oxidative stress mainly by means of mimicry and interference with essential ions, apoptosis, interference with selected signaling pathways and epigenetic regulation of genes involved in the regulation of reproductive function, and disturbance of the hypothalamus-pituitary-gonadal axis. The current review outlines epidemiological observational findings from environmental and occupational exposure in humans, and reports experimental studies in humans and animals. Lastly, a focus on the pathogenetic mechanisms of cadmium toxicity and on the specific mechanisms of cadmium sensitivity and resistance, particularly assessed in animal models, is included. Despite convincing experimental findings in animals and supporting evidences in humans identifying cadmium as reproductive toxicant, observational findings are controversial, suffering from heterogeneity of study design and pattern of exposure, and from co-exposure to multiple pollutants.
Collapse
Affiliation(s)
| | | | - Claudia Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Ciro Salzano
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Daniele Gianfrilli
- Dipartimento di Medicina Sperimentale, Università di Roma "La Sapienza", Rome, Italy.
| | | | - Andrea Lenzi
- Dipartimento di Medicina Sperimentale, Università di Roma "La Sapienza", Rome, Italy.
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| |
Collapse
|
8
|
Zhang J, Yuan Y, Liu Q, Yang D, Liu M, Shen L, Zhou Y, Wang Z. Differentially expressed genes in the testicular tissues of adenylyl cyclase 3 knockout mice. Gene 2017; 602:33-42. [PMID: 27864010 DOI: 10.1016/j.gene.2016.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/10/2016] [Accepted: 11/14/2016] [Indexed: 11/18/2022]
Abstract
Adenylate cyclase 3 (AC3) is an important component of the cyclic adenosine 3',5'-monophosphate (cAMP) signaling pathway and converts adenosine triphosphate into cAMP. Male mice with AC3 deletion (AC3-/-) are sterile. However, the mechanical mechanism remains unclear. By TUNEL staining, we found that cell apoptosis in the testicular tissues of AC3-/- mice increased significantly compared with that in the wild-type (AC3+/+) mice. Differentially expressed genes regulated by AC3 in the testicular tissues were identified by gene chip hybridization. We observed that the expression of 693 genes was altered in the testicular tissues of AC3-/- mice, including 330 up-regulated and 363 down-regulated gene expression with fold changes higher than 2 (≥2) as the standards. Furthermore, part of these differentially expressed genes was verified by the real-time fluorescence quantification PCR and immunofluorescent staining. The expression levels of the genes related to olfactory receptors, cell apoptosis, transcriptional activity, defensive reaction, cell adhesion, cell death, and immunoreactions were significantly altered in the testicular tissues of AC3-/- mice compared with AC3+/+ mice. In addition, the corresponding Ca2+, cAMP, and cell adhesion signaling pathways, as well as the signaling pathways related to axon guidance and cell interaction, were altered significantly in the AC3-/- mice. These data would help elucidate the general understanding of the mechanisms underlying the sterility in AC3-/- male mice.
Collapse
Affiliation(s)
- Jing Zhang
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China
| | - Yuan Yuan
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China
| | - Qingxiu Liu
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China
| | - Dong Yang
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China
| | - Mingshen Liu
- College of Public Health, Hebei University, Baoding, Hebei Province 071002, China
| | - Limin Shen
- College of Medicine, Hebei University, Baoding, Hebei Province 071002, China
| | - Yanfen Zhou
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China.
| | - Zhenshan Wang
- College of Life Science, Hebei University, Baoding, Hebei Province 071002, China.
| |
Collapse
|
9
|
Kawashima A, Kigoshi T, Katoh Y, Ishikawa Y, Shawki HH, Inoue N, Tamba M, Matsuda M, Okamura N. CABCOCO1, a novel coiled-coil protein With calcium-binding activity, is localized in the sperm flagellum. Mol Reprod Dev 2016; 83:912-926. [PMID: 26990073 DOI: 10.1002/mrd.22639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 03/07/2016] [Indexed: 01/08/2023]
Abstract
The gene 1700040L02Rik (GenBank accession number NM_028491, NP_082767.1) was selected by in silico screening as candidate that encodes a calcium-binding protein in sperm from a database of predicted mouse cilia-related genes. The predicted amino acid sequence revealed the presence of coiled-coil domain at the C-terminus and a CLAMP motif containing a leucine zipper domain in the middle of the protein. Assessment of a recombinant version of this protein by Stains-all and ruthenium red staining and by direct measurement of terbium binding revealed its calcium-binding activities. We therefore named this protein CABCOCO1 for calcium-binding coiled-coil protein-1. Immunohistochemical analyses showed its localization in spermatogenic cells of mouse testis. CABCOCO1 was first observed in the cytoplasm of murine spermatocytes, concentrated around centrioles of spermatids and co-localized with the centrosomal protein pericentrin. During the stage when centrosome number is reduced, CABCOCO1 relocalized to the murine sperm flagellum. On the other hand, in porcine sperm, whose proximal centriole remains intact while the distal centriole degenerates during spermiogenesis, CABCOCO1 localized both in the basal body and the flagellum. These results suggested that CABCOCO1 is involved in the control of sperm flagellar movement. Mol. Reprod. Dev. 83: 912-926, 2016 © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Akihiro Kawashima
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Takumi Kigoshi
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yuki Katoh
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Center for Humanities and Sciences, Ibaraki Prefectural University of Health Sciences, Ami, Ibaraki, Japan
| | - Yu Ishikawa
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hossam H Shawki
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Faculty of Medicine, Department of Anatomy and Embryology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Naoya Inoue
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Michiko Tamba
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Manabu Matsuda
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Naomichi Okamura
- Laboratory of Reproductive Biochemistry, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
| |
Collapse
|
10
|
Chandsawangbhuwana C, Shi LZ, Zhu Q, Berns MW. Real-time calcium measurements of live optically trapped microorganisms. JOURNAL OF BIOPHOTONICS 2014; 7:571-579. [PMID: 23576396 DOI: 10.1002/jbio.201200209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 02/06/2013] [Accepted: 03/18/2013] [Indexed: 06/02/2023]
Abstract
A system has been developed that allows for the real-time measurement of calcium dynamics in swimming sperm. Specifically, the ratiometric dye Indo-I is used as a fluorescent indicator of intracellular calcium dynamics. The dual emissions are collected by a high-sensitivity back-illuminated CCD camera coupled to a Dual-View imaging system. From the CCD, the images are sent to a custom developed algorithm which processes the images and outputs the calcium measurements in real-time. Additionally, sperm velocity and position data are processed and outputted in real-time. The velocity and position data are obtained using a separate coupled red light (>670 nm) phase contrast imaging setup that does not optically interfere with the fluorescent imaging. Using this system the effects of optical trapping on calcium dynamics was determined. Optical trapping of sperm with a decaying focused laser power of 510 mW to 3 mW over 8 seconds causes a statistically insignificant change in calcium dynamics between in-trap and out-of-trap conditions. Progesterone, a calcium activator, was added and sperm were trapped under the 8 second power decay conditions. Progesterone treated sperm has a statistically higher average calcium level than untreated sperm, but shows no statistical difference between progesterone treated in-trap and out-of-trap conditions. Trapping at 16 seconds at 510 mW without decay, which have been shown to decrease sperm motility, shows a statistical difference between baseline pre-trap and in-trap intracellular calcium levels.
Collapse
Affiliation(s)
- Charlie Chandsawangbhuwana
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
| | | | | | | |
Collapse
|
11
|
Wu SC, Yang HT, Liu M. Biochemical identification and characterisation of changes associated with capacitation of mannosylated glycoproteins in murine sperm. Andrologia 2011; 44 Suppl 1:747-55. [PMID: 22129428 DOI: 10.1111/j.1439-0272.2011.01261.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The development of a sperm normally ends in the female reproductive track through an extra-testicular maturation process termed capacitation. Previous studies in several mammalian species have revealed the presence of glycoconjugates and their capacitation-correlated changes in localisation. In this study, we used Lens culinaris agglutinin (LCA) to characterise mannosylated glycoconjugates in mouse sperm and their changes in distribution associated with capacitation. In freshly isolated sperm, three biochemically distinct sperm populations (type I, II and III) with specific LCA labelling were noted. Prior to capacitation, glycosylated materials were detected in the head region and approximately 26%, 65% and 9% of sperm displayed each distribution pattern. Following capacitation, the distribution pattern of these mannosylated constituents was not altered; however, re-localisation of these components was observed because the percentage of sperm exhibiting type I and III pattern was significantly changed. Finally, thirteen mannosylated glycoproteins were detected in murine sperm and our lectin blot data confirm that their redistribution instead of proteolytic degradation is mainly responsible for cellular dynamics we observed in murine sperm head associated with capacitation. In conclusion, this study is the first to describe the biochemical identification of LCA-binding glycoproteins present in mammalian sperm, which undergo redistribution as they mature to acquire their full fertilising ability.
Collapse
Affiliation(s)
- S-C Wu
- Department of Life Science, Chinese Culture University, Taipei, Taiwan, ROC
| | | | | |
Collapse
|
12
|
Effect of oviductal secretion components on the fertilizing capacity of amphibian sperm: biological and ultrastructural studies. Micron 2011; 43:223-8. [PMID: 21908195 DOI: 10.1016/j.micron.2011.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 07/29/2011] [Accepted: 08/03/2011] [Indexed: 11/20/2022]
Abstract
The present study was carried out to analyze the fertilization-supporting activity of Rhinella arenarum egg-jelly components. Spermatozoa were treated with diffusible factor (DF) constituted by the components released from the jelly coat into deionized water or with full jelly (FJ) containing all the components secreted by the oviductal pars convoluta (PC) during the transit of the oocytes through the duct, or with washed jelly (WJ) constituted only by structural components. Both jellies were solubilized by ultraviolet irradiation. These gametes were used for ultrastructural and biological studies in order to determine the acrosome state and the fertilizing capacity. Additional experiments were performed by using Ca(2+), a diffusible cation present in R. arenarum jelly envelopes. Results demonstrated a marked increase in the acrosome reaction (AR) of sperm treated with FJ or DF compared to the controls (Ringer's solution), no significant differences being observed between both treatments, while WJ showed low AR percentages similar to the ones obtained with the controls. The addition of Ca(2+) induced an increase in this parameter in a dose-dependent manner, although the values reached with FJ or DF were not attained. The results of the "in vitro" fertilization show a strong inverse association to the acrosome reaction (AR) rate. Treatment with Ca(2+) at the concentration present in the jelly (6.3 ± 0.9 mM) inhibited the fertilizing capacity as a function of incubation time, showing that at 2 min there was a decrease in the fertilization percentages compared to 10% Ringer's. Data indicated that Ca(2+) present in jelly is involved in the AR induction but suggests the possible participation of other diffusible and/or structural components of the oviductal secretion in this process.
Collapse
|
13
|
Olson SD, Fauci LJ, Suarez SS. Mathematical modeling of calcium signaling during sperm hyperactivation. Mol Hum Reprod 2011; 17:500-10. [PMID: 21606121 DOI: 10.1093/molehr/gar040] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Mammalian sperm must hyperactivate in order to fertilize oocytes. Hyperactivation is characterized by highly asymmetrical flagellar bending. It serves to move sperm out of the oviductal reservoir and to penetrate viscoelastic fluids, such as the cumulus matrix. It is absolutely required for sperm penetration of the oocyte zona pellucida. In order for sperm to hyperactivate, cytoplasmic Ca(2+) levels in the flagellum must increase. The major mechanism for providing Ca(2+) to the flagellum, at least in mice, are CatSper channels in the plasma membrane of the principal piece of the flagellum, because sperm from CatSper null males are unable to hyperactivate. There is some evidence for the existence of other types of Ca(2+) channels in sperm, but their roles in hyperactivation have not been clearly established. Another Ca(2+) source for hyperactivation is the store in the redundant nuclear envelope of sperm. To stabilize levels of cytoplasmic Ca(2+), sperm contain Ca(2+) ATPase and exchangers. The interactions between channels, Ca(2+) ATPases, and exchangers are poorly understood; however, mathematical modeling can help to elucidate how they work together to produce the patterns of changes in Ca(2+) levels that have been observed in sperm. Mathematical models can reveal interesting and unexpected relationships, suggesting experiments to be performed in the laboratory. Mathematical analysis of Ca(2+) dynamics has been used to develop a model for Ca(2+) clearance and for CatSper-mediated Ca(2+) dynamics. Models may also be used to understand how Ca(2+) patterns produce flagellar bending patterns of sperm in fluids of low and high viscosity and elasticity.
Collapse
Affiliation(s)
- S D Olson
- Department of Mathematics, Tulane University, New Orleans, LA 70115 USA
| | | | | |
Collapse
|
14
|
Olson SD, Suarez SS, Fauci LJ. A model of CatSper channel mediated calcium dynamics in mammalian spermatozoa. Bull Math Biol 2010; 72:1925-46. [PMID: 20169416 DOI: 10.1007/s11538-010-9516-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 01/29/2010] [Indexed: 11/30/2022]
Abstract
CatSpers are calcium (Ca(2+)) channels that are located along the principal piece of mammalian sperm flagella and are directly linked to sperm motility and hyperactivation. It has been observed that Ca(2+) entry through CatSper channels triggers a tail to head Ca(2+) propagation in mouse sperm, as well as a sustained increase of Ca(2+) in the head. Here, we develop a mathematical model to investigate this propagation and sustained increase in the head. A 1-d reaction-diffusion model tracking intracellular Ca(2+) with flux terms for the CatSper channels, a leak flux, and plasma membrane Ca(2+) clearance mechanism is studied. Results of this simple model exhibit tail to head Ca(2+) propagation, but no sustained increase in the head. Therefore, in this model, a simple plasma membrane pump-leak system with diffusion in the cytosol cannot account for these experimentally observed results. It has been proposed that Ca(2+) influx from the CatSper channels induce additional Ca(2+) release from an internal store. We test this hypothesis by examining the possible role of Ca(2+) release from the redundant nuclear envelope (RNE), an inositol 1,4,5-trisphosphate (IP(3)) gated Ca(2+) store in the neck. The simple model is extended to include an equation for IP(3) synthesis, degradation, and diffusion, as well as flux terms for Ca(2+) in the RNE. When IP(3) and the RNE are accounted for, the results of the model exhibit a tail to head Ca(2+) propagation as well as a sustained increase of Ca(2+) in the head.
Collapse
Affiliation(s)
- Sarah D Olson
- Mathematics Department, Tulane University, 6823 St. Charles Ave., New Orleans, LA 70118, USA.
| | | | | |
Collapse
|
15
|
Naaby-Hansen S, Diekman A, Shetty J, Flickinger CJ, Westbrook A, Herr JC. Identification of calcium-binding proteins associated with the human sperm plasma membrane. Reprod Biol Endocrinol 2010; 8:6. [PMID: 20078857 PMCID: PMC2822784 DOI: 10.1186/1477-7827-8-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 01/15/2010] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND The precise composition of the human sperm plasma membrane, the molecular interactions that define domain specific functions, and the regulation of membrane associated proteins during the capacitation process, still remain to be fully understood. Here, we investigated the repertoire of calcium-regulated proteins associated with the human sperm plasma membrane. METHODS Surface specific radioiodination was combined with two-dimensional gel electrophoresis, a 45Ca-overlay assay, computer assisted image analysis and mass spectrometry to identify calcium-binding proteins exposed on the human sperm surface. RESULTS Nine acidic 45Ca-binding sperm proteins were excised from stained preparative 2D gels and identified by mass spectrometry. Five of the calcium binding proteins; HSPA2 (HSP70-1), HSPA5 (Bip), HYOU1 (ORP150), serum amyloid P-component (SAP) and protein kinase C substrate 80K-H (80K-H) were found to be accessible to Iodo-Bead catalyzed 125I-labelling on the surface of intact human sperm. Agglutination and immunofluorescence analysis confirmed that SAP is situated on the plasma membrane of intact, motile sperm as well as permeabilized cells. Western blot analysis showed increased phosphorylation of human sperm 80K-H protein following in vitro capacitation. This is the first demonstration of the 80K-H protein in a mammalian sperm. CONCLUSION The presence of SAP on the surface of mature sperm implies that SAP has a physiological role in reproduction, which is thought to be in the removal of spermatozoa from the female genital tract via phagocytosis. Since 80K-H is a Ca2+-sensor recently implicated in the regulation of both inositol 1,4,5-trisphosphate receptor and transient receptor potential (TRP) cation channel activities, its detection in sperm represents the first direct signaling link between PKC and store-operated calcium channels identified in human sperm.
Collapse
Affiliation(s)
- Soren Naaby-Hansen
- Department of Clinical Immunology, Aalborg Sygehus, Århus University Hospital, Aalborg, Denmark
| | - Alan Diekman
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jagathpala Shetty
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | | | - Anne Westbrook
- Telemedicine and Advanced Technology Research Center, Ft Detrick, MD, USA
| | - John C Herr
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| |
Collapse
|
16
|
Teves ME, Guidobaldi HA, Uñates DR, Sanchez R, Miska W, Publicover SJ, Morales Garcia AA, Giojalas LC. Molecular mechanism for human sperm chemotaxis mediated by progesterone. PLoS One 2009; 4:e8211. [PMID: 19997608 PMCID: PMC2782141 DOI: 10.1371/journal.pone.0008211] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 10/31/2009] [Indexed: 11/30/2022] Open
Abstract
Sperm chemotaxis is a chemical guiding mechanism that may orient spermatozoa to the egg surface. A picomolar concentration gradient of Progesterone (P), the main steroidal component secreted by the cumulus cells that surround the egg, attracts human spermatozoa. In order to elucidate the molecular mechanism of sperm chemotaxis mediated by P, we combine the application of different strategies: pharmacological inhibition of signaling molecules, measurements of the concentrations of second messengers and activation of the chemotactic signaling. Our data implicate a number of classic signal transduction pathways in the response and provide a model for the sequence of events, where the tmAC-cAMP-PKA pathway is activated first, followed by protein tyrosine phosphorylation (equatorial band and flagellum) and calcium mobilization (through IP(3)R and SOC channels), whereas the sGC-cGMP-PKG cascade, is activated later. These events lead to sperm orientation towards the source of the chemoattractant. The finding proposes a molecular mechanism which contributes to the understanding of the signal transduction pathway that takes place in a physiological process as chemotaxis.
Collapse
Affiliation(s)
- Maria E. Teves
- Centro de Biología Celular y Molecular, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Hector A. Guidobaldi
- Centro de Biología Celular y Molecular, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Diego R. Uñates
- Centro de Biología Celular y Molecular, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Raul Sanchez
- Centro de Biotecnología de la Reproducción, Departamento de Ciencias Preclínicas, Universidad de La Frontera, Temuco, Chile
| | - Werner Miska
- Centre for Dermatology and Andrology, Justus Liebig University, Giessen, Germany
| | | | | | - Laura C. Giojalas
- Centro de Biología Celular y Molecular, Universidad Nacional de Córdoba, Córdoba, Argentina
| |
Collapse
|
17
|
Ni Y, Zhou Y, Chen WY, Zheng M, Yu J, Li C, Zhang Y, Shi QX. HongrES1, a cauda epididymis-specific protein, is involved in capacitation of guinea pig sperm. Mol Reprod Dev 2009; 76:984-93. [DOI: 10.1002/mrd.21063] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
18
|
Costello S, Michelangeli F, Nash K, Lefievre L, Morris J, Machado-Oliveira G, Barratt C, Kirkman-Brown J, Publicover S. Ca2+-stores in sperm: their identities and functions. Reproduction 2009; 138:425-37. [PMID: 19542252 DOI: 10.1530/rep-09-0134] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Intracellular Ca2+ stores play a central role in the regulation of cellular [Ca2+](i) and the generation of complex [Ca2+] signals such as oscillations and waves. Ca2+ signalling is of particular significance in sperm cells, where it is a central regulator in many key activities (including capacitation, hyperactivation, chemotaxis and acrosome reaction) yet mature sperm lack endoplasmic reticulum and several other organelles that serve as Ca2+ stores in somatic cells. Here, we review i) the evidence for the expression in sperm of the molecular components (pumps and channels) which are functionally significant in the activity of Ca2+ stores of somatic cells and ii) the evidence for the existence of functional Ca2+ stores in sperm. This evidence supports the existence of at least two storage organelles in mammalian sperm, one in the acrosomal region and another in the region of the sperm neck and midpiece. We then go on to discuss the probable identity of these organelles and their discrete functions: regulation by the acrosome of its own secretion and regulation by membranous organelles at the sperm neck (and possibly by the mitochondria) of flagellar activity and hyperactivation. Finally, we consider the ability of the sperm discretely to control mobilisation of these stores and the functional interaction of stored Ca2+ at the sperm neck/midpiece with CatSper channels in the principal piece in regulation of the activities of mammalian sperm.
Collapse
Affiliation(s)
- Sarah Costello
- School of Biosciences, University of Birmingham, Birmingham B152TT, UK
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
|
20
|
Ramalho-Santos J, Varum S, Amaral S, Mota PC, Sousa AP, Amaral A. Mitochondrial functionality in reproduction: from gonads and gametes to embryos and embryonic stem cells. Hum Reprod Update 2009; 15:553-72. [DOI: 10.1093/humupd/dmp016] [Citation(s) in RCA: 308] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
21
|
Espino J, Mediero M, Lozano GM, Bejarano I, Ortiz Á, García JF, Pariente JA, Rodríguez AB. Reduced levels of intracellular calcium releasing in spermatozoa from asthenozoospermic patients. Reprod Biol Endocrinol 2009; 7:11. [PMID: 19200382 PMCID: PMC2645411 DOI: 10.1186/1477-7827-7-11] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Accepted: 02/06/2009] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Asthenozoospermia is one of the most common findings present in infertile males characterized by reduced or absent sperm motility, but its aetiology remains unknown in most cases. In addition, calcium is one of the most important ions regulating sperm motility. In this study we have investigated the progesterone-evoked intracellular calcium signal in ejaculated spermatozoa from men with normospermia or asthenozoospermia. METHODS Human ejaculates were obtained from healthy volunteers and asthenospermic men by masturbation after 4-5 days of abstinence. For determination of cytosolic free calcium concentration, spermatozoa were loaded with the fluorescent ratiometric calcium indicator Fura-2. RESULTS Treatment of spermatozoa from normospermic men with 20 micromolar progesterone plus 1 micromolar thapsigargin in a calcium free medium induced a typical transient increase in cytosolic free calcium concentration due to calcium release from internal stores. Similar results were obtained when spermatozoa were stimulated with progesterone alone. Subsequent addition of calcium to the external medium evoked a sustained elevation in cytosolic free calcium concentration indicative of capacitative calcium entry. However, when progesterone plus thapsigargin were administered to spermatozoa from patients with asthenozoospermia, calcium signal and subsequent calcium entry was much smaller compared to normospermic patients. As expected, pretreatment of normospermic spermatozoa with both the anti-progesterone receptor c262 antibody and with progesterone receptor antagonist RU-38486 decreased the calcium release induced by progesterone. Treatment of spermatozoa with cytochalasin D or jasplakinolide decreased the calcium entry evoked by depletion of internal calcium stores in normospermic patients, whereas these treatments proved to be ineffective at modifying the calcium entry in patients with asthenozoospermia. CONCLUSION Our results suggest that spermatozoa from asthenozoospermic patients present a reduced responsiveness to progesterone.
Collapse
Affiliation(s)
- Javier Espino
- Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| | - Matías Mediero
- Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| | | | - Ignacio Bejarano
- Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| | - Águeda Ortiz
- Extremadura Center of Human Assisted Reproduction, Badajoz, Spain
| | - Juan F García
- Extremadura Center of Human Assisted Reproduction, Badajoz, Spain
| | - José A Pariente
- Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| | - Ana B Rodríguez
- Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| |
Collapse
|
22
|
Muratori M, Luconi M, Marchiani S, Forti G, Baldi E. Molecular markers of human sperm functions. ACTA ACUST UNITED AC 2009; 32:25-45. [DOI: 10.1111/j.1365-2605.2008.00875.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
23
|
In vitro fertilization in inbred BALB/c mice II: effects of lactate, osmolarity and calcium on in vitro capacitation. ZYGOTE 2008; 16:259-70. [PMID: 18578945 DOI: 10.1017/s0967199408004619] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
To elucidate requirements for in vitro sperm capacitation in inbred BALB/c mice, osmolarity, calcium and lactate were optimized using modified simplex optimization medium (mKSOM). Modified human tubal fluid (mHTF), a capacitation-supporting medium, was used as a control. In the first series of experiments, the effects of calcium and osmolarity were studied in the presence of lactate. Although preincubation with >or=5 mM CaCl2 improved fertilization after insemination significantly, it was still significantly lower than incubation with mHTF. To obtain fertilization at the equivalent levels to that of mHTF, isotonic osmolarity (305 mOsmol) was required. Trehalose, an osmotic reagent, could substitute for NaCl partially. In the second series of experiments, the effects of lactate were examined using a concentration of 5 mM calcium and isotonic osmolarity. Preincubation with <or=2.5 mM lactate increased fertilization significantly (>75%), as well as the percentages of B (capacitated) pattern sperm (>or=40%) in chlortetracycline (CTC) staining, as compared with incubation in mHTF (46% and 28%, respectively; p<0.05). In the third series of experiments, the effects of osmolarity and calcium in the absence of lactate were examined. An increase in osmolarity during sperm preincubation increased both fertilization and B-pattern sperm significantly in a dose-dependent manner. Trehalose, sucrose and choline chloride could substitute for NaCl. An increase in CaCl2 concentration during preincubation had no effect on fertilization, but this increase reduced the percentages of B-pattern sperm. In vitro capacitation of inbred BALB/c mice is sensitive to lactate and osmolarity, but that sensitivity for calcium varies depending on the presence or absence of lactate.
Collapse
|
24
|
Link between low-dose environmentally relevant cadmium exposures and asthenozoospermia in a rat model. Fertil Steril 2008; 89:e73-9. [PMID: 18308070 DOI: 10.1016/j.fertnstert.2007.12.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To define the mechanism(s) underlying an association between asthenozoospermia and elevated blood, seminal plasma, and testicular cadmium levels in infertile human males using a rat model of environmentally relevant cadmium exposures. SETTING University medical center andrology research laboratory. ANIMAL(S) Male Wistar rats (n = 60), documented to be sensitive to the testicular effects of cadmium. INTERVENTION(S) Rats were given ad libitum access to water supplemented with 14% sucrose and 0 mg/L, 5 mg/L, 50 mg/L, or 100 mg/L cadmium for 1, 4, or 8 weeks beginning at puberty. MAIN OUTCOME MEASURE(S) Testicular cadmium levels were determined by atomic absorption, cauda epididymal sperm motility by visual inspection, and testicular gene expression by DNA microarray hybridization. RESULT(S) Chronic, low-dose cadmium exposures produced a time- and dose-dependent reduction in sperm motility. Transcription of genes regulated by calcium and expression of L-type voltage-dependent calcium channel mRNA splicing variants were altered by cadmium exposure. Expression of calcium binding proteins involved in modulation of sperm motility was unaffected. CONCLUSION(S) A causal relationship between elevated testicular cadmium and asthenozoospermia was identified. Aberrrant sperm motility was correlated with altered expression of L-type voltage-dependent calcium channel isoforms found on the sperm tail, which regulate calcium and cadmium influx.
Collapse
|
25
|
Edwards SE, Buffone MG, Knee GR, Rossato M, Bonanni G, Masiero S, Ferasin S, Gerton GL, Moss SB, Williams CJ. Effects of extracellular adenosine 5'-triphosphate on human sperm motility. Reprod Sci 2008; 14:655-66. [PMID: 18000227 DOI: 10.1177/1933719107306227] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Extracellular adenosine 5'-triphosphate (ATP) previously has been shown to increase the fertilization percentage in human in vitro fertilization (IVF) performed for male factor infertility. The objective of this study is to determine the effects of extracellular adenosine 5'-triphosphate (ATPe) on human sperm function by examining its effects on end points of sperm capacitation. Sperm obtained from healthy volunteers with normal semen parameters, asthenozoospermic men, and cryopreserved samples were incubated in medium with or without 2.5 mM ATPe. The effects of ATPe on acrosomal exocytosis, protein tyrosine phosphorylation, and sperm motility parameters were quantified. Although ATPe did not affect acrosomal exocytosis or protein tyrosine phosphorylation in sperm from healthy donors, it significantly altered several motility parameters, with the largest effects manifested in increased curvilinear velocity and percentage hyperactivation. ATPe similarly affected sperm selected for poor motility and thawed cryopreserved sperm but to a lesser extent than its effects on sperm with normal motility. ATPe increased straight-line velocity and linearity of sperm obtained from asthenozoospermic men. Human sperm motility characteristics are altered by ATPe; this finding may explain its previously reported beneficial effect on human IVF. These results suggest that ATPe could constitute a new therapeutic modality in the treatment of male infertility.
Collapse
Affiliation(s)
- Scott E Edwards
- Center for Research on Reproduction & Women's Health, Department of Obstetrics & Gynecology, University of Pennsylvania, Philadelphia, PA, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
CHOI YJ, UHM SJ, SONG SJ, SONG H, PARK JK, KIM T, PARK C, KIM JH. Cytochrome c Upregulation during Capacitation and Spontaneous Acrosome Reaction Determines the Fate of Pig Sperm Cells: Linking Proteome Analysis. J Reprod Dev 2008; 54:68-83. [DOI: 10.1262/jrd.19116] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yun-Jung CHOI
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Sang-Jun UHM
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Sang-Jin SONG
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Hyuk SONG
- Department of Animal Science, College of Natural Science, Konkuk University
| | - Jin-Ki PARK
- Animal Biotechnology Division, National Livestock Research Institute, RDA
| | - Teoan KIM
- Department of Physiology, Catholic University of Daegu School of Medicine
| | - Chankyu PARK
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| | - Jin-Hoi KIM
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Konkuk University
| |
Collapse
|
27
|
Li HG, Ding XF, Liao AH, Kong XB, Xiong CL. Expression of CatSper family transcripts in the mouse testis during post-natal development and human ejaculated spermatozoa: relationship to sperm motility. Mol Hum Reprod 2007; 13:299-306. [PMID: 17347248 DOI: 10.1093/molehr/gam009] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
CatSper is a unique sperm cation channel-like protein family exclusively expressed in the testis and plays important roles in sperm functions. The temporal expression profiles of CatSper1-4 mRNAs in the mouse testis during post-natal development through adulthood were investigated using real-time RT-PCR. The CatSper2 transcript was present in the testis of the 8-day-old mice, and was repressed in the adult testis after two sharp up-regulations at day 18 and 35. CatSper1 and CatSper3, 4 mRNAs were detectable in the testis of 18-day and 15-day-old mice, respectively. After sharp up-regulation at day 25 and 35, respectively, they were maximal at the adult testis stage. The differences between the temporal expression profiles of the CatSper transcripts in post-natal mouse testis development suggest different regulation to their transcription, and potentially contribute to the possibility of forming heteromeric channels among these four CatSper family members. CatSper1-3 transcripts were identified to be present in the human ejaculated spermatozoa by RT-PCR. Significantly higher levels of CatSper2 and CatSper3 mRNAs revealed by real-time RT-PCR were observed in the high-motile spermatozoa than in the low-motile fraction and suggests that CatSper2 and CatSper3 transcripts in the human ejaculated spermatozoa could be the potential targets for further study and male infertility screening.
Collapse
Affiliation(s)
- Hong-Gang Li
- Centre of Reproductive Medicine and Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | | | | | | | | |
Collapse
|
28
|
Nilius B, Owsianik G, Voets T, Peters JA. Transient receptor potential cation channels in disease. Physiol Rev 2007; 87:165-217. [PMID: 17237345 DOI: 10.1152/physrev.00021.2006] [Citation(s) in RCA: 1035] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The transient receptor potential (TRP) superfamily consists of a large number of cation channels that are mostly permeable to both monovalent and divalent cations. The 28 mammalian TRP channels can be subdivided into six main subfamilies: the TRPC (canonical), TRPV (vanilloid), TRPM (melastatin), TRPP (polycystin), TRPML (mucolipin), and the TRPA (ankyrin) groups. TRP channels are expressed in almost every tissue and cell type and play an important role in the regulation of various cell functions. Currently, significant scientific effort is being devoted to understanding the physiology of TRP channels and their relationship to human diseases. At this point, only a few channelopathies in which defects in TRP genes are the direct cause of cellular dysfunction have been identified. In addition, mapping of TRP genes to susceptible chromosome regions (e.g., translocations, breakpoint intervals, increased frequency of polymorphisms) has been considered suggestive of the involvement of these channels in hereditary diseases. Moreover, strong indications of the involvement of TRP channels in several diseases come from correlations between levels of channel expression and disease symptoms. Finally, TRP channels are involved in some systemic diseases due to their role as targets for irritants, inflammation products, and xenobiotic toxins. The analysis of transgenic models allows further extrapolations of TRP channel deficiency to human physiology and disease. In this review, we provide an overview of the impact of TRP channels on the pathogenesis of several diseases and identify several TRPs for which a causal pathogenic role might be anticipated.
Collapse
Affiliation(s)
- Bernd Nilius
- Department of Physiology, Campus Gasthuisberg, KULeuven, Leuven, Belgium.
| | | | | | | |
Collapse
|
29
|
Calcium channel antagonists: clinical uses--past, present and future. Biochem Pharmacol 2007; 74:1-9. [PMID: 17276408 DOI: 10.1016/j.bcp.2007.01.016] [Citation(s) in RCA: 171] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2006] [Revised: 01/09/2007] [Accepted: 01/09/2007] [Indexed: 12/29/2022]
Abstract
The calcium channel antagonists are a mature group of drugs directed at cardiovascular diseases including hypertension, angina, peripheral vascular disorders and some arrhythmic conditions. Their sites and mechanisms of actions have been well explored over the past two decades and their interactions at the alpha(1) subunit of L-type channels (Ca(V)1.1-1.4) have made them valuable molecular tools for channel classification and localization. With the realization that other members of the voltage-gated calcium channel family exist--Ca(V)2.1-2.3 and Ca(V)3.1-3.3--considerable effort has been directed to drug discovery at these channel types where therapeutic prospects exist for a variety of disorders including pain, epilepsy, affective disorders, neurodegenerative disorders, etc. In contrast to the situation with the L-type channel antagonists success in developing small molecule antagonists of therapeutic utility for these other channel types has thus far been lacking. The reasons for this are explored and potential new directions are indicated including male fertility, bone growth, immune disorders, cancer and schistosomiasis.
Collapse
|
30
|
Abstract
The mouse Slo3 gene (KCNMA3) encodes a K(+) channel that is regulated by changes in cytosolic pH. Like Slo1 subunits responsible for the Ca(2+) and voltage-activated BK-type channel, the Slo3 alpha subunit contains a pore module with homology to voltage-gated K(+) channels and also an extensive cytosolic C terminus thought to be responsible for ligand dependence. For the Slo3 K(+) channel, increases in cytosolic pH promote channel activation, but very little is known about many fundamental properties of Slo3 currents. Here we define the dependence of macroscopic conductance on voltage and pH and, in particular, examine Slo3 conductance activated at negative potentials. Using this information, the ability of a Horrigan-Aldrich-type of general allosteric model to account for Slo3 gating is examined. Finally, the pH and voltage dependence of Slo3 activation and deactivation kinetics is reported. The results indicate that Slo3 differs from Slo1 in several important ways. The limiting conductance activated at the most positive potentials exhibits a pH-dependent maximum, suggesting differences in the limiting open probability at different pH. Furthermore, over a 600 mV range of voltages (-300 to +300 mV), Slo3 conductance shifts only about two to three orders of magnitude, and the limiting conductance at negative potentials is relatively voltage independent compared to Slo1. Within the context of the Horrigan-Aldrich model, these results indicate that the intrinsic voltage dependence (z(L)) of the Slo3 closed-open equilibrium and the coupling (D) between voltage sensor movement are less than in Slo1. The kinetic behavior of Slo3 currents also differs markedly from Slo1. Both activation and deactivation are best described by two exponential components, both of which are only weakly voltage dependent. Qualitatively, the properties of the two kinetic components in the activation time course suggest that increases in pH increase the fraction of more rapidly opening channels.
Collapse
Affiliation(s)
- Xue Zhang
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | | |
Collapse
|