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Martinez-Madrid B, Martínez-Cáceres C, Pequeño B, Castaño C, Toledano-Díaz A, Bóveda P, Prieto P, Alvarez-Rodriguez M, Rodriguez-Martinez H, Santiago-Moreno J. Immunolocalisation of aquaporins 3, 7, 9 and 10 in the epididymis of three wild ruminant species (Iberian ibex, mouflon and chamois) and sperm cryoresistance. Reprod Fertil Dev 2023; 35:708-721. [PMID: 37968880 DOI: 10.1071/rd23091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/26/2023] [Indexed: 11/17/2023] Open
Abstract
CONTEXT In the epididymis, epithelial cells manage changes in the luminal environment for proper sperm maturation. Moreover, aquaglyceroporins, a subgroup of aquaporins (AQP), modulate the transport of water, glycerol and other small molecules in epithelial cells. AIMS We aim to characterise the lining epithelium, quantify its cell composition and immunolocalise the aquaglyceroporins AQP3, AQP7, AQP9 and AQP10 alongside the epididymal ductus of three wild ruminant species, and to determine if species-specific differences could be associated with cauda sperm cryoresistance variations. METHODS Epididymides from Iberian ibex (n =5), mouflon (n =5) and chamois (n =6) were obtained. Cauda spermatozoa were collected and sperm parameters were analysed before and after freezing. Histology and immunohistochemistry of AQP3, 7, 9, 10 and T-CD3 were performed in the caput, corpus and cauda epididymal regions. KEY RESULTS This work first describes the lining epithelium in Iberian ibex, mouflon and chamois epididymis along the three anatomical regions, consisting of principal, basal, apical, clear and halo cells. However, the percentage of each cell type differed in ibex compared to mouflon and chamois. The positive T-CD3 immunolabeling of all the halo cells confirmed their T-lymphocyte nature. Aquaglyceroporin expression patterns were similar among species, except for differences in AQP7 and AQP10 immunolocalisation in ibex. Species-specific differences in epididymal sperm cryoresistance were confirmed. CONCLUSIONS The epididymal epithelium of the three wild ruminants differ in their relative number of cell types and AQP immunolocalisation, which ultimately appears to affect cauda epidydimal spermatozoa cryoresistance. IMPLICATIONS Our study provides information on the relevance of the quantitative composition and AQP pattern expression in epididymal lining epithelium on sperm cryoresistance.
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Affiliation(s)
- Belen Martinez-Madrid
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid 28040, Spain
| | - Carlos Martínez-Cáceres
- Pathology core, Biomedical Research Institute of Murcia Pascual Parrilla (IMIB), Ctra. Buenavista s/n, El Palmar, Murcia 30120, Spain
| | - Belén Pequeño
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
| | - Cristina Castaño
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
| | - Adolfo Toledano-Díaz
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
| | - Paula Bóveda
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
| | - Paloma Prieto
- Consejería de Sostenibilidad, Medio Ambiente y Economía Azul, Junta de Andalucía, Jaén, Spain
| | - Manuel Alvarez-Rodriguez
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
| | - Heriberto Rodriguez-Martinez
- Department of Biomedical and Clinical Sciences (BKV), Obstetrics and Gynecology, Linköping University, Linköping, Sweden
| | - Julián Santiago-Moreno
- Department of Animal Reproduction, National Institute for Agricultural and Food Research and Technology, Spanish Scientific Research Council (INIA-CSIC), Avda. Puerta de Hierro km 5.9, Madrid 28040, Spain
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Al-Thnaian TA. Morphological and Molecular Investigations of Aquaporin-7 (AQP-7) in Male Camelus dromedarius Reproductive Organs. Animals (Basel) 2023; 13:ani13071158. [PMID: 37048414 PMCID: PMC10093170 DOI: 10.3390/ani13071158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/21/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Aquaporins (AQP) are involved in bidirectional transfers of water and small solutes across cell membranes. They are present in all tissues. However, the expression of AQP-7 has not yet been demonstrated in the reproductive tract of the camelid Camelus dromedarius. The study presented here concerns the immunohistochemical evidence of aquaporin-7 (AQP-7) in different parts of the male genital tract of Camelus dromedarius. To check the immune reactivity levels of anti-AQP-7 antibody in the male genital tract of Camelus dromedarius, the testes (proximal part, distal part and rete testis), epididymis (head, body and tail), ductus deferens (initial, middle and ampullary part) and prostate gland (compact and disseminated part) were collected from 12 male camels during the rutting and non-rutting seasons and subjected to immunohistochemistry. The result showed that the highest level of AQP-7 mRNA expression was in the testis of rutting and non-rutting males compared to the ductus deferens, epididymis and prostate. In addition, the highest mRNA gene expression of AQP-7 was in rutting males compared to non-rutting males. AQP-7 mRNA expression was higher in the ret testis, the body of the epididymis, the ampullary part of the ductus deferens and the compact part of the prostate. The immune reactivity levels of AQP-7 in rutting males showed strong reactivity in the testis and prostate compared to the epididymis and ductus deferens. On the basis of the results, it can be concluded that the distribution of the AQP-7 transcript and protein varied among rutting and non-rutting seasons and that the physiological roles of AQP-7 in the transportation of lipids, energy and water should be considered the main challenge in the activity and establishment of male Camelus dromedarius fertility during the rutting and non-rutting seasons. Moreover, AQP-7 detection is critical in assessing regulation and screening for new modulators that can prompt the development of effective medication to enhance fertility during rutting and non-rutting seasons.
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Affiliation(s)
- Thnaian A Al-Thnaian
- Department of Anatomy, College of Veterinary Medicine, King Faisal University, P.O. Box 400, Al-Hassa 31982, Saudi Arabia
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Mohamed EA, Im JW, Kim DH, Bae HR. Differential Expressions of Aquaporin Subtypes in the Adult Mouse
Testis. Dev Reprod 2022; 26:59-69. [PMID: 35950167 PMCID: PMC9336216 DOI: 10.12717/dr.2022.26.2.59] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/14/2022] [Accepted: 05/22/2022] [Indexed: 11/17/2022]
Abstract
Many efforts have been made to study the expression of aquaporins (AQP) in the
mammalian reproductive system, but there are not enough data available regarding
their localized expression to fully understand their specific roles in male
reproduction. The present study investigated the expression and localization
patterns of different AQP subtypes in the adult mouse testes and testicular
spermatozoa using an immunofluorescence assay. All the studied AQPs were
expressed in the testes and revealed subtype-specific patterns in the intensity
and localization depending on the cell types of the testes. AQP7 was the most
abundant and intensive AQP subtype in the seminiferous tubules, expressing in
Leydig cells and Sertoli cells as well as all stages of germ cells, especially
the spermatids and testicular spermatozoa. The expression pattern of AQP3 was
similar to that of AQP7, but with higher expression in the basal and lower
adluminal compartments rather than the upper adluminalcompartment. AQP8
expression was limited to the spermatogonia and Leydig cells whereas AQP9
expression was exclusive to tails of the testicular spermatozoa and elongated
spermatids. Taken together, the abundance and distribution of the AQPs across
the different cell types in the testes indicating to their relavance in
spermatogenesis, as well as in sperm maturation, transition, and function.
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Affiliation(s)
- Elsayed A. Mohamed
- Dept. of Physiology, College of Medicine,
Dong-A University, Busan 49201,
Korea
- Dept. of Genetics, Assiut
University, Assiut 71526, Egypt
| | - Ji Woo Im
- Dept. of Physiology, College of Medicine,
Dong-A University, Busan 49201,
Korea
| | - Dong-Hwan Kim
- Human Life Research Center, Dong-A
University, Busan 49315, Korea
| | - Hae-Rahn Bae
- Dept. of Physiology, College of Medicine,
Dong-A University, Busan 49201,
Korea
- Corresponding author Hae-Rahn Bae, Dept. of
Physiology, Dong-A University, College of Medicine, Busan 49201, Korea. Tel:
+82-51-240-2924, Fax:
+82-51-245-3872, E-mail:
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Mirabella N, Pelagalli A, Liguori G, Rashedul MA, Squillacioti C. Differential abundances of AQP3 and AQP5 in reproductive tissues from dogs with and without cryptorchidism. Anim Reprod Sci 2021; 228:106735. [PMID: 33744817 DOI: 10.1016/j.anireprosci.2021.106735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 02/04/2023]
Abstract
Aquaporins (AQPs) are integral transmembrane proteins facilitating transport of water and small solutes, such as glycerol and urea, between cells. In male reproductive tracts, AQPs maintain a milieu conducive for sperm formation, maturation, and storage. The aim of this study was to clarify effects of testicular and epidydimal function on male fertility by investigating localisation and abundances of AQP3 and AQP5 in testes and epididymal segments from dogs with and without unilateral cryptorchidism. Immunohistochemistry results indicated AQP3 and AQP5 have different distribution patterns in reproductive tissues of dogs with and without unilateral cryptorchidism. The AQP3, an aquaglyceroprotein, is present in different germ and Sertoli cells in testis of dogs without cryptorchidism. The AQP5 protein was not detected in germ cells but was present in Sertoli and Leydig cells and in endothelia of blood vessels. In cryptorchid dogs, AQP3 was detected in early-developing germ and Sertoli cells, and AQP5 had a distribution pattern similar to testes of dogs without cryptorchidism. In the epididymis, AQP3 and AQP5 were localised in epithelial cells of dogs with and without cryptorchidism in a cell-specific manner. The AQP3 and AQP5 protein was in larger abundance in the gonads from dogs with and without cryptorchidism. In contrast, AQP3 and AQP5 abundance increased in each segment of the cryptorchid epididymis, likely as a compensatory mechanism associated with the pathologic condition. These results indicate involvement of AQP3 and AQP5 in spermatogenesis and sperm maturation. Results from the present study indicate dogs are a useful for comparative reproductive biology studies.
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Affiliation(s)
- Nicola Mirabella
- Department of Veterinary Medicine and Animal Production, University of Naples "Federico II", Via Delpino 1, 80137, Naples, Italy
| | - Alessandra Pelagalli
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Via Pansini 5, 80131, Naples, Italy; Institute of Biostructures and Bioimages, National Research Council, Via De Amicis 95, 80131, Naples, Italy
| | - Giovanna Liguori
- Department of Veterinary Medicine and Animal Production, University of Naples "Federico II", Via Delpino 1, 80137, Naples, Italy.
| | - Mohammad Alam Rashedul
- Institute for Anatomy and Cell Biology, Department of Medical Cell Biology Justus Liebig University Giessen, Aulweg 123, 35385, Giessen, Germany
| | - Caterina Squillacioti
- Department of Veterinary Medicine and Animal Production, University of Naples "Federico II", Via Delpino 1, 80137, Naples, Italy
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Kannan A, Panneerselvam A, Mariajoseph-Antony LF, Loganathan C, Prahalathan C. Role of Aquaporins in Spermatogenesis and Testicular Steroidogenesis. J Membr Biol 2020; 253:109-114. [DOI: 10.1007/s00232-020-00114-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/14/2020] [Indexed: 01/25/2023]
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Cellular distribution of aquaporins in testes of normal and cryptorchid dogs: A preliminary study on dynamic roles. Anim Reprod Sci 2019; 204:22-30. [PMID: 30862405 DOI: 10.1016/j.anireprosci.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 01/23/2019] [Accepted: 03/04/2019] [Indexed: 12/15/2022]
Abstract
Fluid regulation within the male gonad is an important process for promoting sperm differentiation and maturation. Aquaporins (AQPs) are a family of thirteen integral membrane proteins involved in these processes. The expression of several genes of AQPs occurs in the male reproductive tract of humans and other animal species, although there are few studies on domestic animals. In this study, the localization of AQP7, AQP8, and AQP9 as well as the abundances of protein and mRNA transcripts were examined in normal and cryptorchid dog testes. There was immunohistochemical localization of AQP7, AQP8, and AQP9 in both the tubular and interstitial compartments of the normal and retained testes and crytorchid dogs, albeit there was an obvious difference in cellular localization with the testes from the cryptorchid dogs. These results were supported by western blotting and real-time RT-PCR analyses, there was a lesser AQP7 and greater AQP9 abundance of protein and mRNA transcripts in the cryptorchid testis. These findings indicate combined testicular functions of AQPs in cell volume regulation. In addition, with the cryptorchid condition characterized there was a different cellular distribution of AQPs supporting the thought that early detection is important for controlling possible side effects of cyptorchidism, such as pre-neoplastic and carcinogenic outcomes.
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Hormonal control of vas deferens fluid volume and aquaporin expression in rats. J Mol Histol 2018; 50:21-34. [PMID: 30430402 DOI: 10.1007/s10735-018-9804-1] [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: 08/09/2018] [Accepted: 11/09/2018] [Indexed: 12/15/2022]
Abstract
Precise regulation of vas deferens fluid volume which is important for sperm survival might be influenced by testosterone. In order to investigate changes in vas deferens fluid volume and aquoporins (AQP) isoforms expression under testosterone influence, orchidectomized Sprague-Dawley rats were given 125 and 250 µg/kg/day testosterone with or without flutamide, an androgen receptor blocker or finasteride, a 5alpha-reductase inhibitor for seven consecutive days. Following treatment completion, vas deferens was perfused and changes in the fluid secretion rate and osmolality were determined in the presence of acetazolamide. Rats were then sacrificed and vas deferens was harvested for histology, tissue expression and distribution analyses of AQP-1, AQP-2, AQP-5, AQP-7 and AQP-9 proteins by Western blotting and immunohistochemistry, respectively. Our findings indicate that testosterone causes vas deferens fluid secretion rate to increase, which was antagonized by acetazolamide. Fluid osmolality increased following testosterone treatment and further increased when acetazolamide was given. Co-administration of flutamide or finasteride with testosterone causing both fluid secretion rate and osmolality to decrease. Histology revealed increased size of vas deferens lumen with increased thickness of vas deferens stroma. Expression of AQP-1, AQP-2 and AQP-9 were detected in vas deferens but not AQP-5 and AQP-7, and the levels of these proteins were increased by testosterone treatment mainly at the apical membrane of vas deferens epithelium. In conclusion, increased in vas deferens fluid secretion rate under testosterone influence mediated via the up-regulation of AQP-1, 2 and 9 might be important for vas deferens fluid homeostasis in order to ensure normal male fertility.
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8
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Chauvigné F, Parhi J, Ducat C, Ollé J, Finn RN, Cerdà J. The cellular localization and redistribution of multiple aquaporin paralogs in the spermatic duct epithelium of a maturing marine teleost. J Anat 2018; 233:177-192. [PMID: 29806093 DOI: 10.1111/joa.12829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2018] [Indexed: 12/15/2022] Open
Abstract
Aquaporin-mediated fluid transport in the mammalian efferent duct and epididymis is believed to play a role in sperm maturation and concentration. In fish, such as the marine teleost gilthead seabream (Sparus aurata), the control of fluid homeostasis in the spermatic duct seems also to be crucial for male fertility, but no information exists on the expression and distribution of aquaporins. In this study, reverse transcriptase-polymerase chain reaction and immunoblotting analyses, employing available and newly raised paralog-specific antibodies for seabream aquaporins, indicate that up to nine functional aquaporins, Aqp0a, -1aa, -1ab, -3a, -4a, -7, -8bb, -9b and -10b, are expressed in the spermatic duct. Immunolocalization of the channels in the resting spermatic duct reveals that Aqp0a, -1aa, -4a, -7 and -10b are expressed in the monolayered luminal epithelium, Aqp8b and -9b in smooth muscle fibers, and Aqp1ab and -3a in different interstitial lamina cells. In the epithelial cells, Aqp0a and -1aa are localized in the short apical microvilli, and Aqp4a and -10b show apical and basolateral staining, whereas Aqp7 is solely detected in vesicular compartments. Upon spermiation, an elongation of the epithelial cells sterocilia, as well as the folding of the epithelium, is observed. At this stage, single- and double-immunostaining, using two aquaporin paralogs or the Na+ /K+ -ATPase membrane marker, indicate that Aqp1ab, -3a, -7, -8bb and -9b staining remains unchanged, whereas in epithelial cells Aqp1aa translation is supressed, Aqp4a internalizes, and Aqp0a and -10b accumulate in the apical, lateral and basal plasma membrane. These findings uncover a cell type- and region-specific distribution of multiple aquaporins in the piscine spermatic duct, which shares conserved features of the mammalian system. The data therefore suggest that aquaporins may play different roles in the regulation of fluid homeostasis and sperm maturation in the male reproductive tract of fish.
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Affiliation(s)
- François Chauvigné
- Group of Comparative Molecular Physiology, IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
| | - Janmejay Parhi
- Fish Genetics and Reproduction Department, College of Fisheries, Central Agricultural University, Lembucherra, Tripura, India
| | - Carla Ducat
- Group of Comparative Molecular Physiology, IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
| | - Judith Ollé
- Group of Comparative Molecular Physiology, IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
| | - Roderick Nigel Finn
- Group of Comparative Molecular Physiology, IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain.,Department of Biological Sciences, Bergen High Technology Centre, University of Bergen, Bergen, Norway
| | - Joan Cerdà
- Group of Comparative Molecular Physiology, IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
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Yeste M, Morató R, Rodríguez-Gil JE, Bonet S, Prieto-Martínez N. Aquaporins in the male reproductive tract and sperm: Functional implications and cryobiology. Reprod Domest Anim 2017; 52 Suppl 4:12-27. [DOI: 10.1111/rda.13082] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- M Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm); Unit of Cell Biology; Department of Biology; Institute of Food and Agricultural Technology; Faculty of Sciences; University of Girona; Girona Spain
| | - R Morató
- Biotechnology of Animal and Human Reproduction (TechnoSperm); Unit of Cell Biology; Department of Biology; Institute of Food and Agricultural Technology; Faculty of Sciences; University of Girona; Girona Spain
- Unit of Animal Reproduction; Department of Animal Medicine and Surgery; Faculty of Veterinary Medicine; Autonomous University of Barcelona; Bellaterra (Cerdanyola del Vallès) Barcelona Spain
| | - JE Rodríguez-Gil
- Unit of Animal Reproduction; Department of Animal Medicine and Surgery; Faculty of Veterinary Medicine; Autonomous University of Barcelona; Bellaterra (Cerdanyola del Vallès) Barcelona Spain
| | - S Bonet
- Biotechnology of Animal and Human Reproduction (TechnoSperm); Unit of Cell Biology; Department of Biology; Institute of Food and Agricultural Technology; Faculty of Sciences; University of Girona; Girona Spain
| | - N Prieto-Martínez
- Biotechnology of Animal and Human Reproduction (TechnoSperm); Unit of Cell Biology; Department of Biology; Institute of Food and Agricultural Technology; Faculty of Sciences; University of Girona; Girona Spain
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10
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Schimming BC, Baumam CAE, Pinheiro PFF, de Matteis R, Domeniconi RF. Aquaporin 9 is expressed in the epididymis of immature and mature pigs. Reprod Domest Anim 2017; 52:617-624. [DOI: 10.1111/rda.12957] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/09/2017] [Indexed: 01/17/2023]
Affiliation(s)
- BC Schimming
- Department of Anatomy; Institute of Biosciences; São Paulo State University (UNESP); Botucatu SP Brazil
| | - CAE Baumam
- School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP); Botucatu SP Brazil
| | - PFF Pinheiro
- Department of Anatomy; Institute of Biosciences; São Paulo State University (UNESP); Botucatu SP Brazil
| | - R de Matteis
- School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP); Botucatu SP Brazil
| | - RF Domeniconi
- Department of Anatomy; Institute of Biosciences; São Paulo State University (UNESP); Botucatu SP Brazil
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11
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Arrighi S, Bosi G, Accogli G, Desantis S. Seasonal and Ageing-Depending Changes of Aquaporins 1 and 9 Expression in the Genital Tract of Buffalo Bulls (Bubalus bubalis). Reprod Domest Anim 2016; 51:515-23. [DOI: 10.1111/rda.12713] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/03/2016] [Indexed: 01/19/2023]
Affiliation(s)
- S. Arrighi
- Department of Health, Animal Science and Food Safety (VESPA); Laboratory of Anatomy; Università degli Studi di Milano; Milano Italy
| | - G. Bosi
- Department of Health, Animal Science and Food Safety (VESPA); Laboratory of Anatomy; Università degli Studi di Milano; Milano Italy
| | - G. Accogli
- Department of Emergency and Organ Transplantation (DETO); Veterinary Clinics and Animal Productions Section; University of Bari “Aldo Moro”; Bari Italy
| | - S. Desantis
- Department of Emergency and Organ Transplantation (DETO); Veterinary Clinics and Animal Productions Section; University of Bari “Aldo Moro”; Bari Italy
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12
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Vukićević T, Schulz M, Faust D, Klussmann E. The Trafficking of the Water Channel Aquaporin-2 in Renal Principal Cells-a Potential Target for Pharmacological Intervention in Cardiovascular Diseases. Front Pharmacol 2016; 7:23. [PMID: 26903868 PMCID: PMC4749865 DOI: 10.3389/fphar.2016.00023] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 01/25/2016] [Indexed: 01/13/2023] Open
Abstract
Arginine-vasopressin (AVP) stimulates the redistribution of water channels, aquaporin-2 (AQP2) from intracellular vesicles into the plasma membrane of renal collecting duct principal cells. By this AVP directs 10% of the water reabsorption from the 170 L of primary urine that the human kidneys produce each day. This review discusses molecular mechanisms underlying the AVP-induced redistribution of AQP2; in particular, it provides an overview over the proteins participating in the control of its localization. Defects preventing the insertion of AQP2 into the plasma membrane cause diabetes insipidus. The disease can be acquired or inherited, and is characterized by polyuria and polydipsia. Vice versa, up-regulation of the system causing a predominant localization of AQP2 in the plasma membrane leads to excessive water retention and hyponatremia as in the syndrome of inappropriate antidiuretic hormone secretion (SIADH), late stage heart failure or liver cirrhosis. This article briefly summarizes the currently available pharmacotherapies for the treatment of such water balance disorders, and discusses the value of newly identified mechanisms controlling AQP2 for developing novel pharmacological strategies. Innovative concepts for the therapy of water balance disorders are required as there is a medical need due to the lack of causal treatments.
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Affiliation(s)
- Tanja Vukićević
- Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association Berlin, Germany
| | - Maike Schulz
- Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association Berlin, Germany
| | - Dörte Faust
- Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz Association Berlin, Germany
| | - Enno Klussmann
- Max Delbrück Center for Molecular Medicine (MDC) in the Helmholtz AssociationBerlin, Germany; German Centre for Cardiovascular ResearchBerlin, Germany
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Liman N, Alan E. Region-specific localization of NOS isoforms and NADPH-diaphorase activity in the intratesticular and excurrent duct systems of adult domestic cats (Felis catus). Microsc Res Tech 2016; 79:192-208. [PMID: 26910642 DOI: 10.1002/jemt.22619] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 12/14/2015] [Accepted: 12/16/2015] [Indexed: 11/10/2022]
Abstract
Nitric oxide (NO) is produced by nitric oxide synthases (NOSs) and plays an important role in all levels of reproduction from the brain to the reproductive organs. Recently, it has been discovered that all germ cells and Leydig cells in the cat testis exhibit stage-dependent nuclear and cytoplasmic endothelial (eNOS) and inducible (iNOS)-NOS immunoreactivity and cytoplasmic nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) reactivity. As a continuation of this finding, in this study, cellular localization of NADPH-d and immunolocalization and expression of all three NOS isoforms were investigated in the intratesticular (tubuli recti and rete testis), and excurrent ducts (efferent ductules, epididymal duct and vas deferens) of adult cats using histochemistry, immunohistochemistry and western blotting. NADPH-d activity was found in the midpiece of the spermatozoa tail and epithelial cells of all of ducts, except for nonciliated cells of the efferent ductules. Even though the immunoblotting results revealed similar levels of nNOS, eNOS and iNOS in the caput, corpus and cauda segments of epididymis and the vas deferens, immunostainings showed cell-specific localization in the efferent ductules and region- and cell-specific localization in the epididymal duct. All of three NOS isoforms were immunolocalized to the nuclear membrane and cytoplasm of the epithelial cells in all ducts, but were found in the tail and the cytoplasmic droplets of spermatozoa. These data suggest that NO/NOS activity might be of importance not only for the functions of the intratesticular and excurrent ducts but also for sperm maturation.
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Affiliation(s)
- Narin Liman
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Erciyes, Kayseri, 38039, Turkey
| | - Emel Alan
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Erciyes, Kayseri, 38039, Turkey
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14
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Boj M, Chauvigné F, Zapater C, Cerdà J. Gonadotropin-Activated Androgen-Dependent and Independent Pathways Regulate Aquaporin Expression during Teleost (Sparus aurata) Spermatogenesis. PLoS One 2015; 10:e0142512. [PMID: 26575371 PMCID: PMC4648546 DOI: 10.1371/journal.pone.0142512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 10/22/2015] [Indexed: 11/18/2022] Open
Abstract
The mediation of fluid homeostasis by multiple classes of aquaporins has been suggested to be essential during spermatogenesis and spermiation. In the marine teleost gilthead seabream (Sparus aurata), seven distinct aquaporins, Aqp0a, -1aa, -1ab, -7, -8b, -9b and -10b, are differentially expressed in the somatic and germ cell lineages of the spermiating testis, but the endocrine regulation of these channels during germ cell development is unknown. In this study, we investigated the in vivo developmental expression of aquaporins in the seabream testis together with plasma androgen concentrations. We then examined the in vitro regulatory effects of recombinant piscine gonadotropins, follicle-stimulating (rFsh) and luteinizing (rLh) hormones, and sex steroids on aquaporin mRNA levels during the spermatogenic cycle. During the resting phase, when plasma levels of androgens were low, the testis exclusively contained proliferating spermatogonia expressing Aqp1ab, whereas Aqp10b and -9b were localized in Sertoli and Leydig cells, respectively. At the onset of spermatogenesis and during spermiation, the increase of androgen plasma levels correlated with the additional appearance of Aqp0a and -7 in Sertoli cells, Aqp0a in spermatogonia and spermatocytes, Aqp1ab, -7 and -10b from spermatogonia to spermatozoa, and Aqp1aa and -8b in spermatids and spermatozoa. Short-term in vitro incubation of testis explants indicated that most aquaporins in Sertoli cells and early germ cells were upregulated by rFsh and/or rLh through androgen-dependent pathways, although Aqp1ab in proliferating spermatogonia was also activated by estrogens. However, expression of Aqp9b in Leydig cells, and of Aqp1aa and -7 in spermatocytes and spermatids, was also directly stimulated by rLh. These results reveal a complex gonadotropic control of aquaporin expression during seabream germ cell development, apparently involving both androgen-dependent and independent pathways, which may assure the fine tuning of aquaporin-mediated fluid secretion and absorption mechanisms in the seabream testis.
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Affiliation(s)
- Mónica Boj
- IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain
| | - François Chauvigné
- IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain
- Department of Biology, Bergen High Technology Centre, University of Bergen, 5020, Bergen, Norway
| | - Cinta Zapater
- IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain
| | - Joan Cerdà
- IRTA-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain
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15
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Boj M, Chauvigné F, Cerdà J. Aquaporin biology of spermatogenesis and sperm physiology in mammals and teleosts. THE BIOLOGICAL BULLETIN 2015; 229:93-108. [PMID: 26338872 DOI: 10.1086/bblv229n1p93] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fluid homeostasis is recognized as a critical factor during the development, maturation, and function of vertebrate male germ cells. These processes have been associated with the presence of multiple members of the aquaporin superfamily of water and solute channels in different cell types along the reproductive tract as well as in spermatozoa. We present a comparative analysis of the existing knowledge of aquaporin biology in the male reproductive tissues of mammals and teleosts. Current data suggest that in both vertebrate groups, aquaporins may have similar functions during differentiation of spermatozoa in the germinal epithelium, in the concentration and maturation of sperm in the testicular ducts, and in the regulation of osmotically induced volume changes in ejaculated spermatozoa. Recent studies have also provided insight into the possible function of aquaporins beyond water transport, such as in signaling pathways during spermatogenesis or the sensing of cell swelling and mitochondrial peroxide transport in activated sperm. However, an understanding of the specific physiological functions of the various aquaporins during germ cell development and sperm motility, as well as the molecular mechanisms involved, remains elusive. Novel experimental approaches need to be developed to elucidate these processes and to dissect the regulatory intracellular pathways implicated, which will greatly help to uncover the molecular basis of sperm physiology and male fertility in vertebrates.
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Affiliation(s)
- Mónica Boj
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003 Barcelona, Spain; and
| | - François Chauvigné
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003 Barcelona, Spain; and Department of Biology, Bergen High Technology Centre, University of Bergen, 5020 Bergen, Norway
| | - Joan Cerdà
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003 Barcelona, Spain; and
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16
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Schimming BC, Pinheiro PFF, de Matteis R, Machado CM, Domeniconi RF. Immunolocalization of Aquaporins 1 and 9 in the Ram Efferent Ducts and Epididymis. Reprod Domest Anim 2015; 50:617-24. [DOI: 10.1111/rda.12537] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/19/2015] [Indexed: 01/14/2023]
Affiliation(s)
- BC Schimming
- Department of Anatomy; Biosciences Institute of Botucatu; UNESP - Universidade Estadual Paulista; Botucatu São Paulo Brazil
| | - PFF Pinheiro
- Department of Anatomy; Biosciences Institute of Botucatu; UNESP - Universidade Estadual Paulista; Botucatu São Paulo Brazil
| | - R de Matteis
- Faculty of Veterinary Medicine and Animal Science; UNESP - Universidade Estadual Paulista; Botucatu São Paulo Brazil
| | - CM Machado
- Department of Anatomy; Biosciences Institute of Botucatu; UNESP - Universidade Estadual Paulista; Botucatu São Paulo Brazil
| | - RF Domeniconi
- Department of Anatomy; Biosciences Institute of Botucatu; UNESP - Universidade Estadual Paulista; Botucatu São Paulo Brazil
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17
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Zhao Y, Lai A, Dong W. Expression and Significance of Aquaporin-2 in Human Ectocervical-Vaginal Epithelial Cells. Gynecol Obstet Invest 2014; 78:186-93. [DOI: 10.1159/000363240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 04/24/2014] [Indexed: 11/19/2022]
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18
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A naturally occurring Lgr4 splice variant encodes a soluble antagonist useful for demonstrating the gonadal roles of Lgr4 in mammals. PLoS One 2014; 9:e106804. [PMID: 25188337 PMCID: PMC4154783 DOI: 10.1371/journal.pone.0106804] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 08/05/2014] [Indexed: 01/10/2023] Open
Abstract
Leucine-rich repeat containing G protein-coupled receptor 4 (LGR4) promotes the Wnt signaling through interaction with R-spondins or norrin. Using PCR amplification from rat ovarian cDNAs, we identified a naturally occurring Lgr4 splice variant encoding only the ectodomain of Lgr4, which was named Lgr4-ED. Lgr4-ED can be detected as a secreted protein in the extracts from rodent and bovine postnatal gonads, suggesting conservation of Lgr4-ED in mammals. Recombinant Lgr4-ED purified from the conditioned media of transfected 293T cells was found to dose-dependently inhibit the LGR4-mediated Wnt signaling induced by RSPO2 or norrin, suggesting that it is capable of ligand absorption and could have a potential role as an antagonist. Intraperitoneal injection of purified recombinant Lgr4-ED into newborn mice was found to significantly decrease the testicular expression of estrogen receptor alpha and aquaporin 1, which is similar to the phenotype found in Lgr4-null mice. Administration of recombinant Lgr4-ED to superovulated female rats can also decrease the expression of estrogen receptor alpha, aquaporin 1, LH receptor and other key steroidogenic genes as well as bring about the suppression of progesterone production. Thus, these findings suggest that endogenously expressed Lgr4-ED may act as an antagonist molecule and help to fine-tune the R-spondin/norrin-mediated Lgr4-Wnt signaling during gonadal development.
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