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Murase I, Kawamoto T, Akizawa N, Irie T. Rearing in strontium-enriched water induces vaterite otoliths in the Japanese rice fish, Oryzias latipes. ROYAL SOCIETY OPEN SCIENCE 2023; 10:230410. [PMID: 37325597 PMCID: PMC10265005 DOI: 10.1098/rsos.230410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023]
Abstract
Sagittal otoliths, typically composed of aragonite, are frequently laid down rather as vaterite during growth in hatchery-reared fish populations. Sagittal vateritization is believed to impair individual hearing/balancing abilities, but the causal mechanism remains unclear. Here we experimentally demonstrated that rearing in Sr-rich water induces sagittal vateritization in the HdrR-II1 inbred strain of the Japanese rice fish, Oryzias latipes. Both sagittae were partly vateritized in 70% of individuals subjected to the Sr2+ treatment (n = 10), whereas fish reared in normal tap water showed no sagittal vateritization (n = 8). Our result is consistent with the theoretical prediction that vaterite becomes thermodynamically more stable than aragonite as the Sr2+ concentration in solution increases. A vateritic layer develops surrounding the original aragonitic sagitta in vateritized otoliths, some of which take on a comma-like shape. Electron probe microanalysis demonstrates that the vateritized phase is characterized by lower Sr2+ and higher Mg2+ concentrations than the aragonitic phase. It is unlikely that increased environmental Sr2+ is responsible for the sagittal vateritization in farmed fish. However, our findings likely help to establish an in vivo assay using O. latipes to understand the physiological process underlying the sagittal vateritization in farmed fish.
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Affiliation(s)
- Iki Murase
- Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
| | - Tatsuhiko Kawamoto
- Department of Geoscience, Faculty of Science, Shizuoka University, Shizuoka, Shizuoka 422-8529, Japan
| | - Norikatsu Akizawa
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
| | - Takahiro Irie
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
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Cao Q, Yin S. The influence of environmental calcium on the branchial morphology in a catadromous fish. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:8945-8952. [PMID: 33405148 DOI: 10.1007/s11356-020-11922-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
Eels are exposed to Ca2+ changes during migration between seawater and freshwater. The gill is the main organ of active calcium transport and has a large surface area to be particularly sensitive to environmental changes in the aquatic environment. In this research, we focused on the morphological changes of gill tissues when eels are faced with the environmental calcium challenges. Based on the results of hematoxylin and eosin (HE) staining and immunohistochemistry, compared with the control group (normal Ca2+ environment), the filament and lamella lengths and lamellar frequency (LF) appeared higher in high calcium environment and lower in deficient calcium environment, while the lamella width and filamental lamellar surface area (SAFL) decreased in high calcium environment and increased in deficient calcium environment. And there was no difference in the number filaments in first right gill arch in the three Ca2+ water environment. Transmission electron microscopy was employed to examine the ultrastructural changes in gills in different Ca2+ water environment. The nucleus and endoplasmic reticulum had a tendency to expand in calcium-deficient water, but had a tendency to shrink in high-calcium water comparing with the control group. This study provides the support that branchial surface areas are regulated in different Ca2+ waters through a list of calcium transporters including CACNB2.
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Affiliation(s)
- Quanquan Cao
- College of Marine Science and Engineering, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, Jiangsu, China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005, China
| | - Shaowu Yin
- College of Marine Science and Engineering, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, Jiangsu, China.
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005, China.
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3
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Javanmardi S, Rezaei Tavabe K, Rosentrater KA, Solgi M, Bahadori R. Effects of different levels of vitamin B 6 in tank water on the Nile tilapia (Oreochromis niloticus): growth performance, blood biochemical parameters, intestine and liver histology, and intestinal enzyme activity. FISH PHYSIOLOGY AND BIOCHEMISTRY 2020; 46:1909-1920. [PMID: 32592129 DOI: 10.1007/s10695-020-00840-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
According to the importance of vitamin B6 (pyridoxine) as a water-soluble vitamin on the physiological conditions of aquatic animals, the present study aimed to investigate effects of different concentrations of this vitamin in recycle system culture water on the Nile tilapia (Oreochromis niloticus). Treatments including 0 (control), 10, 20, 30, and 40 mg L-1 vitamin B6 were adjusted in triplicate recirculating systems. Each of the experimental tanks (100 L) was stocked 15 fingerling Nile tilapia during 60-day experimental period. According to the findings, weight gain in treatments of 30 and 40 mg L-1 pyridoxine was significantly higher than the other treatments while blood cortisol hormone in the treatment of 40 mg L-1 was significantly highest among the treatments. In addition, mid-intestine trypsin activity in the treatment of 40 mg L-1 was significantly higher than the other treatments. The histological analysis of the intestine showed that the number of mucus-secreting cells significantly decreased in treatments of 30 and 40 mg L-1. Our findings here suggest that pyridoxine can possibly be absorbed by the Nile tilapia's body through culture water and it seems 20-30 mg L-1 pyridoxine in the culture water is the optimal concentration for the Nile tilapia juveniles in recycle system culture.
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Affiliation(s)
- Sina Javanmardi
- Fisheries Department, Natural Resources Faculty, University of Tehran, Karaj, Iran
| | - Kamran Rezaei Tavabe
- Fisheries Department, Natural Resources Faculty, University of Tehran, Karaj, Iran.
| | - Kurt A Rosentrater
- Department of Agricultural and Biosystems Engineering, Iowa State University, 3327 Elings Hall, Ames, IA, 50011-3270, USA
| | - Masoomeh Solgi
- Fisheries Department, Natural Resources Faculty, University of Tehran, Karaj, Iran
| | - Rana Bahadori
- Fisheries Department, Natural Resources Faculty, University of Tehran, Karaj, Iran
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Han TY, Wu CY, Tsai HC, Cheng YP, Chen WF, Lin TC, Wang CY, Lee JR, Hwang PP, Lu FI. Comparison of Calcium Balancing Strategies During Hypothermic Acclimation of Tilapia ( Oreochromis mossambicus) and Goldfish ( Carassius auratus). Front Physiol 2018; 9:1224. [PMID: 30233401 PMCID: PMC6129941 DOI: 10.3389/fphys.2018.01224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 08/14/2018] [Indexed: 01/07/2023] Open
Abstract
The body temperatures of teleost species fluctuate following changes in the aquatic environment. As such, decreased water temperature lowers the rates of biochemical reactions and affects many physiological processes, including active transport-dependent ion absorption. Previous studies have focused on the impacts of low temperature on the plasma ion concentrations or membrane transporters in fishes. However, very few in vivo or organism-level studies have been performed to more thoroughly elucidate the process of acclimation to low temperatures. In the present study, we compared the strategies for cold acclimation between stenothermic tilapia and eurythermic goldfish. Whole-body calcium content was more prominently diminished in tilapia than in goldfish after long-term cold exposure. This difference can be attributed to alterations in the transportation parameters for Ca2+ influx, i.e., maximum velocity (Vmax) and binding affinity (1/Km). There was also a significant difference in the regulation of Ca2+ efflux between the two fishes. Transcript levels for Ca2+ related transporters, including the Na+/Ca2+ exchanger and epithelial Ca2+ channel, were similarly regulated in both fishes. However, upregulation of plasma membrane Ca2+ATPase expression was more pronounced in goldfish than in tilapia. In addition, enhanced Na+/K+-ATPase abundance, which provides the major driving force for ion absorption, was only detected in tilapia, while upregulated Na+/K+-ATPase activity was only detected in goldfish. Based on the results of the present study, we have found that goldfish and tilapia differentially regulate gill epithelial plasma membrane Ca2+-ATPase (PMCA) expression and Na+/K+-ATPase activity in response to cold environments. These regulatory differences are potentially linked to more effective regulation of Ca2+ influx kinetics and better maintenance of whole body calcium content in goldfish than in tilapia.
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Affiliation(s)
- Tsung-Yu Han
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Yu Wu
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Han-Chuan Tsai
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Pei Cheng
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Fan Chen
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Tzu-Chien Lin
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Yih Wang
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jay-Ron Lee
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Pung-Pung Hwang
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Fu-I Lu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan.,The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
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Han Z, Xiao S, Li W, Ye K, Wang ZY. The identification of growth, immune related genes and marker discovery through transcriptome in the yellow drum (Nibea albiflora). Genes Genomics 2018; 40:881-891. [PMID: 30047113 DOI: 10.1007/s13258-018-0697-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 04/20/2018] [Indexed: 11/30/2022]
Abstract
Yellow drum (Nibea albiflora) is a commercially important marine fish, which is widely distributed in the coastal waters of China, Japan and Korea. Wild yellow drum resources have dramatically declined due to overfishing and ocean pollution. Genetic data can contribute to biodiversity conservation and protection. And molecular markers can play important roles in genetic breeding and aid in germplasm preservation in fish. In this study, 11 tissues (brain, heart, liver, kidney, muscle, head kidney, skin, fin, spleen, gonad and air bladder) were collected for pooled RNA sequencing. The unigenes were assembled using Trinity and EvidentialGene, and were then aligned to nr, nt, Swiss-Prot GO, KEGG, and KOG for annotation. Molecular markers (e.g. simple sequence repeat, SSR and single nucleotide polymorphism, SNP) were detected using MIcroSAtellite identification tool (MISA) and Genome Analysis Tool Kit (GATK). All clean reads were assembled into 109,209 transcripts, and 31,183 unigenes were generated after pruning and classifying, ranging from 201 to 19,857 bp in length (1230 bp in average), and 26,728 (85.7%) assembled unigenes had significant hits in public databases. Total of 27 and 103 unigenes were respectively identified as involved in growth- and immune-related pathways in the N. albiflora transcriptome. In addition, we identified a considerable quantity of molecular markers, including 11,484 SSRs and 56,186 SNPs. The growth- and immune-relevant genes and the molecular markers identified here provided a meaningful reference gene set and laid a foundation for future genetic selection and breeding for this species.
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Affiliation(s)
- Zhaofang Han
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Shijun Xiao
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Wanbo Li
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Kun Ye
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Zhi Yong Wang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen, 361021, China. .,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China.
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Guh YJ, Hwang PP. Insights into molecular and cellular mechanisms of hormonal actions on fish ion regulation derived from the zebrafish model. Gen Comp Endocrinol 2017; 251:12-20. [PMID: 27554927 DOI: 10.1016/j.ygcen.2016.08.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 08/15/2016] [Accepted: 08/18/2016] [Indexed: 02/07/2023]
Abstract
Fish have sophisticated mechanisms of ionic and acid-base regulation for maintaining body fluid homeostasis. Many hormones have been proposed to control the ionic and acid-base regulation mechanisms in fishes; however, lots of the proposed actions lack convincing cellular/molecular evidence. With the advantages of available genetic databases and molecular manipulation techniques, zebrafish has become an emerging model for research into ion transport physiology and functional regulation. Different types of ionocytes were found to transport ions through various sets of ion transporters, and the molecular mechanisms of ionocyte proliferation and differentiation have also been dissected, providing a competent platform with which to precisely study the ion transport pathways and ionocytes targeted by hormones, including isotocin, prolactin, cortisol, stanniocalcin-1, calcitonin, endothelin-1, vitamin D, parathyroid hormone 1, catecholamines, the renin-angiotensin-system, estrogen-related receptor α, and calcitonin gene-related peptide, which have been demonstrated to positively or negatively regulate ion transport through specific receptors at different molecular levels (transcriptional, translational, or posttranslational) or at different developmental stages of ionocytes (proliferation or differentiation). The knowledge obtained in zebrafish not only enhances our understanding of the hormonal control of fish ion regulation, but also informs studies on other animal species, thereby providing insights into related fields.
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Affiliation(s)
- Ying-Jey Guh
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan; Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Pung-Pung Hwang
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
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7
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Ma D, Ma A, Huang Z, Wang G, Wang T, Xia D, Ma B. Transcriptome Analysis for Identification of Genes Related to Gonad Differentiation, Growth, Immune Response and Marker Discovery in The Turbot (Scophthalmus maximus). PLoS One 2016; 11:e0149414. [PMID: 26925843 PMCID: PMC4771204 DOI: 10.1371/journal.pone.0149414] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 02/01/2016] [Indexed: 11/18/2022] Open
Abstract
Background Turbot Scophthalmus maximus is an economically important species extensively aquacultured in China. The genetic selection program is necessary and urgent for the sustainable development of this industry, requiring more and more genome background knowledge. Transcriptome sequencing is an excellent alternative way to identify transcripts involved in specific biological processes and exploit a considerable quantity of molecular makers when no genome sequences are available. In this study, a comprehensive transcript dataset for major tissues of S. maximus was produced on basis of an Illumina platform. Results Total RNA was isolated from liver, spleen, kidney, cerebrum, gonad (testis and ovary) and muscle. Equal quantities of RNA from each type of tissues were pooled to construct two cDNA libraries (male and female). Using the Illumina paired-end sequencing technology, nearly 44.22 million clean reads in length of 100 bp were generated and then assembled into 106,643 contigs, of which 71,107 were named unigenes with an average length of 892 bp after the elimination of redundancies. Of these, 24,052 unigenes (33.83% of the total) were successfully annotated. GO, KEGG pathway mapping and COG analysis were performed to predict potential genes and their functions. Based on our sequence analysis and published documents, many candidate genes with fundamental roles in sex determination and gonad differentiation (dmrt1), growth (ghrh, myf5, prl/prlr) and immune response (TLR1/TLR21/TLR22, IL-15/IL-34), were identified for the first time in this species. In addition, a large number of credible genetic markers, including 21,192 SSRs and 8,642 SNPs, were identified in the present dataset. Conclusion This informative transcriptome provides valuable new data to increase genomic resources of Scophthalmus maximus. The future studies of corresponding gene functions will be very useful for the management of reproduction, growth and disease control in turbot aquaculture breeding programs. The molecular markers identified in this database will aid in genetic linkage analyses, mapping of quantitative trait loci, and acceleration of marker assisted selection programs.
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Affiliation(s)
- Deyou Ma
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
- Dalian Ocean University, Dalian, 116023, China
| | - Aijun Ma
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
- * E-mail:
| | - Zhihui Huang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Guangning Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Ting Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Dandan Xia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Benhe Ma
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
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Lin CH, Kuan WC, Liao BK, Deng AN, Tseng DY, Hwang PP. Environmental and cortisol-mediated control of Ca(2+) uptake in tilapia (Oreochromis mossambicus). J Comp Physiol B 2016; 186:323-32. [PMID: 26857273 PMCID: PMC4791471 DOI: 10.1007/s00360-016-0963-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/12/2016] [Accepted: 01/21/2016] [Indexed: 12/14/2022]
Abstract
Ca2+ is a vital element for many physiological processes in vertebrates, including teleosts, which live in aquatic environments and acquire Ca2+ from their surroundings. Ionocytes within the adult gills or larval skin are critical sites for transcellular Ca2+ uptake in teleosts. The ionocytes of zebrafish were found to contain transcellular Ca2+ transporters, epithelial Ca2+ channel (ECaC), plasma membrane Ca2+-ATPase 2 (PMCA2), and Na+/Ca2+ exchanger 1b (NCX1b), providing information about the molecular mechanism of transcellular Ca2+ transports mediated by ionocytes in fish. However, more evidence is required to establish whether or not a similar mechanism of transcellular Ca2+ transport also exists in others teleosts. In the present study, ecac, pmca2, and ncx1 were found to be expressed in the branchial ionocytes of tilapia, thereby providing further support for the mechanism of transcellular Ca2+ transport through ionocytes previously proposed for zebrafish. In addition, we also reveal that low Ca2+ water treatment of tilapia stimulates Ca2+ uptake and expression of ecac and cyp11b (the latter encodes a cortisol-synthesis enzyme). Treatment of tilapia with exogenous cortisol (20 mg/l) enhanced both Ca2+ influx and ecac expression. Therefore, increased cyp11b expression is suggested to enhance Ca2+ uptake capacity in tilapia exposed to low Ca2+ water. Furthermore, the application of cortisol receptor antagonists revealed that cortisol may regulate Ca2+ uptake through glucocorticoid and/or mineralocorticoid receptor (GR and/or MR) in tilapia. Taken together, the data suggest that cortisol may activate GR and/or MR to execute its hypercalcemic action by stimulating ecac expression in tilapia.
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Affiliation(s)
- Chia-Hao Lin
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan, ROC.,National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Aichi, Japan
| | - Wei-Chun Kuan
- Department of Biological Sciences and Technology, National University of Tainan, Tainan, 70005, Taiwan, ROC
| | - Bo-Kai Liao
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan, ROC
| | - Ang-Ni Deng
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan, ROC
| | - Deng-Yu Tseng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan, 70005, Taiwan, ROC.
| | - Pung-Pung Hwang
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan, ROC.
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10
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Sacchi R, Gardell AM, Chang N, Kültz D. Osmotic regulation and tissue localization of themyo-inositol biosynthesis pathway in tilapia (Oreochromis mossambicus) larvae. ACTA ACUST UNITED AC 2014; 321:457-66. [DOI: 10.1002/jez.1878] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/16/2014] [Accepted: 06/05/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Romina Sacchi
- EcoPhysiological Proteomics Laboratory; Department of Animal Science; University of California; Davis; Davis California
| | - Alison M. Gardell
- EcoPhysiological Proteomics Laboratory; Department of Animal Science; University of California; Davis; Davis California
| | - Nicole Chang
- EcoPhysiological Proteomics Laboratory; Department of Animal Science; University of California; Davis; Davis California
| | - Dietmar Kültz
- EcoPhysiological Proteomics Laboratory; Department of Animal Science; University of California; Davis; Davis California
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11
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Genz J, Shute L, Anderson WG. Regulation of Calcium Transport in the Early Life Stages of an Ancient Fish, Acipenser fulvescens. Physiol Biochem Zool 2014; 87:299-309. [DOI: 10.1086/674919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Vanoevelen J, Janssens A, Huitema LFA, Hammond CL, Metz JR, Flik G, Voets T, Schulte-Merker S. Trpv5/6 is vital for epithelial calcium uptake and bone formation. FASEB J 2011; 25:3197-207. [PMID: 21670068 DOI: 10.1096/fj.11-183145] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Calcium is an essential ion serving a multitude of physiological roles. Aside from its role as a second messenger, it is an essential component of the vertebrate bone matrix. Efficient uptake and storage of calcium are therefore indispensable for all vertebrates. Transient receptor potential family, vanilloid type (TRPV)5 and TRPV6 channels are known players in transcellular calcium uptake, but the exact contribution of this pathway is unclear. We used forward genetic screening in zebrafish (Danio rerio) to identify genes essential in bone formation and identified a lethal zebrafish mutant (matt-und-schlapp) with severe defects in bone formation, including lack of ossification of the vertebral column and craniofacial structures. Mutant embryos show a 68% reduction in calcium content, and systemic calcium homeostasis is disturbed when compared with siblings. The phenotype can be partially rescued by increasing ambient calcium levels to 25 mM. We identified the mutation as a loss-of-function mutation in the single orthologue of TRPV5 and 6, trpv5/6. Expression in HEK293 cells showed that Trpv5/6 is a calcium-selective channel capable of inward calcium transport at physiological concentrations whereas the mutant channel is not. Taken together, this study provides both genetic and functional evidence that transcellular epithelial calcium uptake is vital to sustain life and enable bone formation.
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Affiliation(s)
- Jo Vanoevelen
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Centre, Utrecht, The Netherlands.
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13
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Allen PJ, Weihrauch D, Grandmaison V, Dasiewicz P, Peake SJ, Anderson WG. The influence of environmental calcium concentrations on calcium flux, compensatory drinking and epithelial calcium channel expression in a freshwater cartilaginous fish. ACTA ACUST UNITED AC 2011; 214:996-1006. [PMID: 21346128 DOI: 10.1242/jeb.041087] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Calcium metabolism and mRNA levels of the epithelial calcium channel (ECaC) were examined in a freshwater cartilaginous fish, the lake sturgeon Acipenser fulvescens. Lake sturgeon were acclimated for ≥2 weeks to 0.1 (low), 0.4 (normal) or 3.3 (high) mmol l(-1) environmental calcium. Whole-body calcium flux was examined using (45)Ca as a radioactive marker. Net calcium flux was inward in all treatment groups; however, calcium influx was greatest in the low calcium environment and lowest in the high calcium environment, whereas efflux had the opposite relationship. A significant difference in the concentration of (45)Ca in the gastrointestinal tract (GIT) of fish in the low calcium environment led to the examination of drinking rate and calcium flux across the anterior-middle (mid) intestine. Drinking rate was not different between treatments; however, calcium influx across the mid-intestine in the low calcium treatment was significantly greater than that in both the normal and high calcium treatments. The lake sturgeon ECaC was 2831 bp in length, with a predicted protein sequence of 683 amino acids that shared a 66% identity with the closest sequenced ECaCs from the vertebrate phyla. ECaC mRNA levels were examined in the gills, kidney, pyloric caeca, mid-intestine and spiral intestine. Expression levels were highest in the gills, then the kidneys, and were orders of magnitude lower in the GIT. Contrary to existing models for calcium uptake in the teleost gill, ECaC expression was greatest in high calcium conditions and kidney ECaC expression was lowest in low calcium conditions, suggesting that cellular transport mechanisms for calcium may be distinctly different in these freshwater cartilaginous fishes.
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Affiliation(s)
- Peter J Allen
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada.
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Tseng DY, Chou MY, Tseng YC, Hsiao CD, Huang CJ, Kaneko T, Hwang PP. Effects of stanniocalcin 1 on calcium uptake in zebrafish (Danio rerio) embryo. Am J Physiol Regul Integr Comp Physiol 2008; 296:R549-57. [PMID: 19073903 DOI: 10.1152/ajpregu.90742.2008] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Stanniocalcin (STC) formerly called hypocalcin or teleocalcin, is a 50-kDa disulfide-linked homodimeric glycoprotein that was originally identified in fish and secreted from the corpuscles of Stannius (CS). One of the main functions of STC-1 is Ca(2+) uptake inhibition; however, the mechanisms remain unknown. In the present study, we provide molecular evidence to elucidate how zebrafish STC-1 regulates Ca(2+) uptake in zebrafish embryos. In a wide variety of tissues including the kidney, brain, gill, muscle, and skin, zstc-1 was expressed. Incubating zebrafish embryos in low-Ca(2+) (0.02 mM) freshwater stimulated whole body Ca(2+) influx and zebrafish epithelial Ca(2+) channel (zECaC) mRNA expression, while downregulated zstc-1 expression. A morpholino microinjection approach was used to knockdown the zSTC-1 protein, and the results showed that the Ca(2+) content, Ca(2+) influx, and zECaC mRNA expression all increased in morphants. These data suggest that zSTC-1 negatively regulates ECaC gene expression to reduce Ca(2+) uptake in zebrafish embryos.
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Affiliation(s)
- Deng-Yu Tseng
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan
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15
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Pan TC, Liao BK, Huang CJ, Lin LY, Hwang PP. Epithelial Ca(2+) channel expression and Ca(2+) uptake in developing zebrafish. Am J Physiol Regul Integr Comp Physiol 2005; 289:R1202-11. [PMID: 15947067 DOI: 10.1152/ajpregu.00816.2004] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of the present work was to study the possible role of the epithelial Ca(2+) channel (ECaC) in the Ca(2+) uptake mechanism in developing zebrafish (Danio rerio). With rapid amplification of cDNA ends, full-length cDNA encoding the ECaC of zebrafish (zECaC) was cloned and sequenced. The cloned zECaC was 2,578 bp in length and encoded a protein of 709 amino acids that showed up to 73% identity with previously described vertebrate ECaCs. The zECaC was found to be expressed in all tissues examined and began to be expressed in the skin covering the yolk sac of embryos at 24 h postfertilization (hpf). zECaC-expressing cells expanded to cover the skin of the entire yolk sac after embryonic development and began to occur in the gill filaments at 96 hpf, and thereafter zECaC-expressing cells rapidly increased in both gills and yolk sac skin. Corresponding to ECaC expression profile, the Ca(2+) influx and content began to increase at 36-72 hpf. Incubating zebrafish embryos in low-Ca(2+) (0.02 mM) freshwater caused upregulation of the whole body Ca(2+) influx and zECaC expression in both gills and skin. Colocalization of zECaC mRNA and the Na(+)-K(+)-ATPase alpha-subunit (a marker for mitochondria-rich cells) indicated that only a portion of the mitochondria-rich cells expressed zECaC mRNA. These results suggest that the zECaC plays a key role in Ca(2+) absorption in developing zebrafish.
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Affiliation(s)
- Tien-Chien Pan
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan 11529, ROC
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16
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Power DM. Developmental ontogeny of prolactin and its receptor in fish. Gen Comp Endocrinol 2005; 142:25-33. [PMID: 15862545 DOI: 10.1016/j.ygcen.2004.10.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2004] [Accepted: 10/12/2004] [Indexed: 11/24/2022]
Abstract
Prolactin (PRL) is a member of a family of structurally similar proteins which includes growth hormone (GH) and somatolactin (SL) in teleost fish. The genes encoding these proteins are expressed principally in the pituitary gland and sequence analysis reveals they share considerable similarity. GH, PRL, and SL bring about their physiological action by binding to specific receptors localised in the membrane of cells in target tissue. The PRL receptor (PRLR) and GH receptor (GHR) have been identified in a number of teleosts but the SL receptor remains to be characterised. On hormone binding, receptors dimerise, and signal transduction occurs via the JAK/STAT signalling pathway. The principal action of PRL in fish is freshwater osmoregulation, although it has also been implicated in reproduction, behaviour, growth, and immunoregulation. The role of PRL in early development and metamorphosis is well established, respectively, in mammals and amphibians, although its role in fish is not so well known. Studies have shown that PRL mRNA and protein are restricted to the developing pituitary gland in fish embryos and larvae. PRLR mRNA and protein is also present in fish embryos and has a widespread tissue distribution in larvae. The levels of PRLR and PRL mRNA vary throughout embryonic and early larval development. The potential role of PRL in fish embryos and larvae is considered in relation to their physiological status.
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Affiliation(s)
- D M Power
- Comparative and Molecular Endocrinology Group, CCMAR, Universidade do Algarve, Faro, Portugal.
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Chen YY, Lu FI, Hwang PP. Comparisons of calcium regulation in fish larvae. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, COMPARATIVE EXPERIMENTAL BIOLOGY 2003; 295:127-35. [PMID: 12541296 DOI: 10.1002/jez.a.10195] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The purpose of the present study was to compare the ability of larvae of different species, goldfish (Carassius auratus), zebrafish (Danio rerio), and ayu (Plecoglossus altivelis), to regulate their calcium balance. Whole-body Ca(2+) content and Ca(2+) influx in the larvae of the three species, which were incubated in low- (0.02 mM), mid- (0.2 mM), and high- (2.0 mM) Ca(2+) artificial fresh water from embryonic stages, were compared. The Ca(2+) uptake kinetics were determined in zebrafish and goldfish incubated in high- or low-Ca(2+) artificial fresh water. Ca(2+) content of both zebrafish and ayu acclimated to low-Ca(2+) media were significantly lower than those acclimated to mid- or high-Ca(2+) media. However, Ca(2+) contents of goldfish in low-, mid-, and high-Ca(2+) groups showed no significant differences. In goldfish, Ca(2+) influx in the low-Ca(2+) group was significantly higher than those of the mid- and high-Ca(2+) groups. In contrast, the Ca(2+) influx rate in the low-Ca(2+) group was significantly lower than those in the mid- and high-Ca(2+) groups in zebrafish and ayu. Compared to the high-Ca(2+) group, the low-Ca(2+) group of goldfish showed a 13% increase in the maximal velocity (J(max)) and an 84% decrease in the Michaelis constant (K(m)) for Ca(2+) influx. Smaller changes, i.e., an 8% increase in J(max) and a 67% decrease in K(m), were found in zebrafish larvae. Goldfish possess a more effective Ca(2+) regulatory capacity than do zebrafish and ayu. Differences in the strategies for Ca(2+) balance may be associated with different development patterns and environments in which these fish naturally occur.
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Affiliation(s)
- Yi-Yen Chen
- Institute of Fisheries Science, National Taiwan University, Taipei, Taiwan 106, ROC
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