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Wang L, Miao J, Ding M, Zhang W, Pan L. Exploring the mechanism of nonylphenol-induced ovarian developmental delay of manila clams, Ruditapes philippinarum: Applying RNAi to toxicological analysis. CHEMOSPHERE 2024; 356:141905. [PMID: 38579946 DOI: 10.1016/j.chemosphere.2024.141905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/07/2024]
Abstract
Nonylphenol (NP) contamination in the coastal environment of China poses ecological risks to aquatic organisms. However, the endocrine disruptive impacts of NP on bivalves, particularly on ovarian development, remain poorly understood. In this study, Manila clams Ruditapes philippinarum at the developing stage of gonad were exposed to 1.0 μg/L NP for 21 days. Utilizing RNA interference (RNAi) to suppress ER gene expression, we observed a delay in ovarian development as evidenced by histological observations under both NP and NPRi (NP with ER-RNAi) treatment, with Vtg elevation exclusive to the NP group. Comprehensive analyses encompassing transcriptomics, real-time quantitative PCR, and steroid hormone measurement revealed significant alterations in aldosterone synthesis, estrogen signaling, and thyroid hormone synthesis. These pathways showed similar perturbations in both NP and NPRi groups compared to controls. Notably, the NPRi group exhibited distinct enrichment in PPAR and insulin signaling pathways, may implicating these in ER function suppression. Steroid hormone biosynthesis was notably reduced in both treatments, pointing to a profound impact on hormone synthesis. The contrast between in vivo and in vitro findings suggests that NP's detrimental effects on ovarian development may primarily involve neuroendocrine regulation of steroidogenesis. This investigation highlights the complex dynamics of NP-induced endocrine disruption in bivalves, emphasizing the pivotal role of ER and associated pathways.
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Affiliation(s)
- Lu Wang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Jingjing Miao
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China.
| | - Min Ding
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China; Marine Environmental Monitoring Central Station of Qinhuangdao, SOA, PR China
| | - Wei Zhang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
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Zapata-Restrepio LM, Hauton C, Hudson MD, Williams ID, Hauton D. Toxicity of tributyltin to the European flat oyster Ostrea edulis: Metabolomic responses indicate impacts to energy metabolism, biochemical composition and reproductive maturation. PLoS One 2023; 18:e0280777. [PMID: 36745593 PMCID: PMC9901812 DOI: 10.1371/journal.pone.0280777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/10/2023] [Indexed: 02/07/2023] Open
Abstract
Tri-Butyl Tin (TBT) remains as a legacy pollutant in the benthic environments. Although the toxic impacts and endocrine disruption caused by TBT to gastropod molluscs have been established, the changes in energy reserves allocated to maintenance, growth, reproduction and survival of European oysters Ostrea edulis, a target species of concerted benthic habitat restoration projects, have not been explored. This study was designed to evaluate the effect of TBT chloride (TBTCl) on potential ions and relevant metabolomic pathways and its association with changes in physiological, biochemical and reproductive parameters in O. edulis exposed to environmental relevant concentrations of TBTCl. Oysters were exposed to TBTCl 20 ng/L (n = 30), 200 ng/L (n = 30) and 2000 ng/L (n = 30) for nine weeks. At the end of the exposure, gametogenic stage, sex, energy reserve content and metabolomic profiling analysis were conducted to elucidate the metabolic alterations that occur in individuals exposed to those compounds. Metabolite analysis showed significant changes in the digestive gland biochemistry in oysters exposed to TBTCl, decreasing tissue ATP concentrations through a combination of the disruption of the TCA cycle and other important molecular pathways involved in homeostasis, mitochondrial metabolism and antioxidant response. TBTCl exposure increased mortality and caused changes in the gametogenesis with cycle arrest in stages G0 and G1. Sex determination was affected by TBTCl exposure, increasing the proportion of oysters identified as males in O. edulis treated at 20ng/l TBTCl, and with an increased proportion of inactive stages in oysters treated with 2000 ng/l TBTCl. The presence and persistence of environmental pollutants, such as TBT, could represent an additional threat to the declining O. edulis populations and related taxa around the world, by increasing mortality, changing reproductive maturation, and disrupting metabolism. Our findings identify the need to consider additional factors (e.g. legacy pollution) when identifying coastal locations for shellfish restoration.
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Affiliation(s)
- Lina M. Zapata-Restrepio
- School of Geography and Environmental Sciences, University of Southampton, Highfield Campus, Southampton, United Kingdom
- * E-mail:
| | - Chris Hauton
- Ocean and Earth Sciences, National Oceanography Centre, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Malcolm D. Hudson
- School of Geography and Environmental Sciences, University of Southampton, Highfield Campus, Southampton, United Kingdom
| | - Ian D. Williams
- Faculty of Engineering and Physical Sciences, University of Southampton, Highfield Campus, Southampton, United Kingdom
| | - David Hauton
- Metabolomics Research Group, Chemistry Research Laboratory, University of Oxford, Oxford, United Kingdom
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Mannai A, Hmida L, Bouraoui Z, Guerbej H, Gharred T, Jebali J. Does thermal stress modulate the biochemical and physiological responses of Ruditapes decussatus exposed to the progestin levonorgestrel? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85211-85228. [PMID: 35794321 DOI: 10.1007/s11356-022-21786-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
In this study, we investigated the effects of 1000 ng/l levonorgestrel (LNG) alone or combined with increased temperature of 20, 24, and 28 °C on the biochemical and physiological responses of the clam (Ruditapes decussatus) for 28 days. Our results revealed that female clams treated with levonorgestrel (LNG) alone showed enhancement of the antioxidant defense against oxidative stress related to the inductions of catalase (CAT), gluthatione -S -transferase (GST), and protein sulfhydryl (PSH), while the elevated temperatures of 20, 24, and 28 °C diminished most of the specific responses to LNG and was the main factor in the determining the responses to combine exposures. The responses of lysosomal membrane stability, alkaline phosphatase, and NADP+-dependent isocitrate dehydrogenase detected were the most common signs of an adverse effect in all exposures. Female clams' testosterone and estradiol responses to LNG were the most particular manifestations depending on the exposure. Overall, these findings showed clearly that chronic warming stress caused disruption in physiological, biochemical parameters of the female clam R. decussatus, and this may have implications for the whole organism and populations.
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Affiliation(s)
- Asma Mannai
- Laboratory of Genetics Biodiversity and Valorization of Bio-resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia.
| | - Leila Hmida
- Research Unit Ecosystems & Aquatic Resources (UR13AGRO1), National Agronomic Institute of Tunisia (INAT), University of Carthage, Charles Nicolle Avenue 43, Mahrajene City, 1082, Tunis, Tunisia
| | - Zied Bouraoui
- National Institute of Marine Sciences and Technology, Laboratory of Blue Biotechnology and Aquatic Bioproducts (LR16INSTM05), Monastir, Tunisia
| | - Hamadi Guerbej
- National Institute of Marine Sciences and Technology, Laboratory of Blue Biotechnology and Aquatic Bioproducts (LR16INSTM05), Monastir, Tunisia
| | - Tahar Gharred
- Laboratory of Bioresources: Integrative Biology & Valorization (LR 14ES06), Higher Institute of Biotechnology of Monastir, Monastir, Tunisia
| | - Jamel Jebali
- Laboratory of Genetics Biodiversity and Valorization of Bio-resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
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Svigruha R, Fodor I, Padisak J, Pirger Z. Progestogen-induced alterations and their ecological relevance in different embryonic and adult behaviours of an invertebrate model species, the great pond snail (Lymnaea stagnalis). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59391-59402. [PMID: 33349911 PMCID: PMC8542004 DOI: 10.1007/s11356-020-12094-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 12/14/2020] [Indexed: 05/19/2023]
Abstract
The presence of oral contraceptives (basically applying estrogens and/or progestogens) poses a challenge to animals living in aquatic ecosystems and reflects a rapidly growing concern worldwide. However, there is still a lack in knowledge about the behavioural effects induced by progestogens on the non-target species including molluscs. In the present study, environmental progestogen concentrations were summarised. Knowing this data, we exposed a well-established invertebrate model species, the great pond snail (Lymnaea stagnalis) to relevant equi-concentrations (1, 10, 100, and 500 ng L-1) of mixtures of four progestogens (progesterone, drospirenone, gestodene, levonorgestrel) for 21 days. Significant alterations were observed in the embryonic development time, heart rate, feeding, and gliding activities of the embryos as well as in the feeding and locomotion activity of the adult specimens. All of the mixtures accelerated the embryonic development time and the gliding activity. Furthermore, the 10, 100, and 500 ng L-1 mixtures increased the heart rate and feeding activity of the embryos. The 10, 100, and 500 ng L-1 mixtures affected the feeding activity as well as the 1, 10, and 100 ng L-1 mixtures influenced the locomotion of the adult specimens. The differences of these adult behaviours showed a biphasic response to the progestogen exposure; however, they changed approximately in the opposite way. In case of feeding activity, this dose-response phenomenon can be identified as a hormesis response. Based on the authors' best knowledge, this is the first study to investigate the non-reproductive effects of progestogens occurring also in the environment on molluscan species. Our findings contribute to the global understanding of the effects of human progestogens, as these potential disruptors can influence the behavioural activities of non-target aquatic species. Future research should aim to understand the potential mechanisms (e.g., receptors, signal pathways) of progestogens induced behavioural alterations.
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Affiliation(s)
- Reka Svigruha
- Department of Limnology, University of Pannonia, Veszprém, 8200, Hungary
- NAP Adaptive Neuroethology Research Group, Department of Experimental Zoology, Balaton Limnological Institute, Centre for Ecological Research, Tihany, 8237, Hungary
| | - Istvan Fodor
- NAP Adaptive Neuroethology Research Group, Department of Experimental Zoology, Balaton Limnological Institute, Centre for Ecological Research, Tihany, 8237, Hungary
| | - Judit Padisak
- Department of Limnology, University of Pannonia, Veszprém, 8200, Hungary
| | - Zsolt Pirger
- NAP Adaptive Neuroethology Research Group, Department of Experimental Zoology, Balaton Limnological Institute, Centre for Ecological Research, Tihany, 8237, Hungary.
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Taubenheim J, Kortmann C, Fraune S. Function and Evolution of Nuclear Receptors in Environmental-Dependent Postembryonic Development. Front Cell Dev Biol 2021; 9:653792. [PMID: 34178983 PMCID: PMC8222990 DOI: 10.3389/fcell.2021.653792] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/06/2021] [Indexed: 12/14/2022] Open
Abstract
Nuclear receptors (NRs) fulfill key roles in the coordination of postembryonal developmental transitions in animal species. They control the metamorphosis and sexual maturation in virtually all animals and by that the two main environmental-dependent developmental decision points. Sexual maturation and metamorphosis are controlled by steroid receptors and thyroid receptors, respectively in vertebrates, while both processes are orchestrated by the ecdysone receptor (EcR) in insects. The regulation of these processes depends on environmental factors like nutrition, temperature, or photoperiods and by that NRs form evolutionary conserved mediators of phenotypic plasticity. While the mechanism of action for metamorphosis and sexual maturation are well studied in model organisms, the evolution of these systems is not entirely understood and requires further investigation. We here review the current knowledge of NR involvement in metamorphosis and sexual maturation across the animal tree of life with special attention to environmental integration and evolution of the signaling mechanism. Furthermore, we compare commonalities and differences of the different signaling systems. Finally, we identify key gaps in our knowledge of NR evolution, which, if sufficiently investigated, would lead to an importantly improved understanding of the evolution of complex signaling systems, the evolution of life history decision points, and, ultimately, speciation events in the metazoan kingdom.
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Affiliation(s)
- Jan Taubenheim
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Constantin Kortmann
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Sebastian Fraune
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Xu R, Pan L, Yang Y, Zhou Y, Li D. Temporal transcriptome analysis in female scallop Chlamys farreri: First molecular insights into the disturbing mechanism on lipid metabolism of reproductive-stage dependence under benzo[a]pyrene exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:142032. [PMID: 33027874 DOI: 10.1016/j.scitotenv.2020.142032] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are one of the most widespread persistent organic pollutants (POPs) in marine environment. Benzo[a]pyrene (B[a]P), the most toxic carcinogen of PAHs, is widely studied as a representative that interferes with lipid metabolism. However, the underlying molecular mechanisms of lipid metabolism by B[a]P interference towards bivalve, one of the marine-pollution bio-indicators have not been elucidated yet, especially during gonadal development which is closely associated with lipids. In this study, female scallops Chlamys farreri were cultured with natural and 4 μg/L B[a]P exposed seawater, respectively, and a multi-stage (proliferative, growth, mature, and spawn stage) ovarian transcriptome profiling was performed to decipher the reproductive stage-dependence disturbing mechanisms on lipid metabolism caused by B[a]P in bivalves. The results revealed the potential molecular mechanism of B[a]P-induced triglycerides (TGs) accumulation, which probably resulted from the collaboration of promoting synthesis and inhibiting metabolization of TGs, notably, this mechanism also occurred at spawn stage. Correspondingly, B[a]P and TGs contents measured in ovary offered direct biochemical evidences for the interference effects and stage-dependent accumulation patterns of B[a]P. Moreover, the gene expressions of fatty acids synthesis related enzymes were down-regulated cooperatively, illustrating the molecular compensatory mechanism that reduced susceptibility from oxidative damage. And these results further emphasized the important role of prostaglandins (PGs) in immune response mediated by arachidonic acid metabolism. In addition, this study explored the underlying molecular mechanism affected by B[a]P on sterol metabolism, which possibly posed a threat to normal reproductive functions in bivalves. Taken together, our findings filled the gap of the stage-dependent interference molecular mechanisms on lipid metabolism behind bivalves, and provided a new perspective for investigating the adaptive mechanisms of bivalves under POPs stress.
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Affiliation(s)
- Ruiyi Xu
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, PR China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, PR China.
| | - Yingying Yang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, PR China
| | - Yueyao Zhou
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, PR China
| | - Dongyu Li
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, PR China
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Kim MA, Kim TH, Lee S, Nam BH, Lee JS, Jang W, Sohn YC. Ovarian transcriptome profiles associated with sexual maturation in Pacific abalone (Haliotis discus hannai). Genes Genomics 2020; 42:1179-1188. [PMID: 32804357 DOI: 10.1007/s13258-020-00983-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/31/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND There is now abundant information on genes involved in molluscan oogenesis and their associations with ovarian development. However, few studies have investigated the ovarian transcriptome of Pacific abalone (Haliotis discus hannai). OBJECTIVE The objective of this study was to identify genes related to ovarian development and maturation in Pacific abalone utilizing RNA-sequencing (RNA-seq) and to verify the genes most relevant to different stages of maturation. METHODS RNA samples from the ovarian tissues of sexually immature and mature abalone were used to construct cDNA libraries, which were paired-end sequenced on an Illumina HiSeq 2500 platform. Reads from individual samples (unigenes) were aligned to reference transcriptome databases for identification of differentially expressed genes (DEGs) between immature and mature ovarian libraries. Reverse transcription-quantitative polymerase chain reaction was used to verify the RNA-seq data. RESULTS A total of 8779 unigenes were obtained from the ovaries of immature and mature abalone, with a total length of 3323,279 bp and an average length of 379 bp per gene. Gene ontology analysis assigned 5860 unigenes to biological processes, 855 to cellular components, and 1352 to molecular functions. Overall, 470 DEGs were identified, including 213 and 257 genes down-regulated and up-regulated in mature abalone, respectively. Among these, 13 relevant transcripts, including VTG1 and FZD7, were significantly highly expressed in the ovaries of mature abalone (p < 0.05, fold change > 2). CONCLUSION This H. discus hannai ovary transcriptome provides molecular targets to better understand ovarian development, oogenesis, and sexual maturation, and to enhance Pacific abalone production.
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Affiliation(s)
- Mi Ae Kim
- Department of Marine Molecular Bioscience, Gangneung-Wonju National University, Gangneung, Gangwon, 25457, Republic of Korea.,The East Coast Research Institute of Life Science, Gangneung-Wonju National University, Gangneung, Gangwon, 25457, Republic of Korea
| | - Tae Ha Kim
- Department of Marine Molecular Bioscience, Gangneung-Wonju National University, Gangneung, Gangwon, 25457, Republic of Korea
| | - Sora Lee
- Department of Life Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung Sick Lee
- Department of Aqualife Medicine, Chonnam National University, Yeosu, 59626, Republic of Korea
| | - Wonhee Jang
- Department of Life Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Young Chang Sohn
- Department of Marine Molecular Bioscience, Gangneung-Wonju National University, Gangneung, Gangwon, 25457, Republic of Korea.
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Kidd KA, Graves SD, McKee GI, Dyszy K, Podemski CL. Effects of Whole-Lake Additions of Ethynylestradiol on Leech Populations. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1608-1619. [PMID: 32692460 DOI: 10.1002/etc.4789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/03/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Leeches are widespread, found in many freshwater habitats, and have diverse dietary habits. Despite their close phylogenetic relationships to Mollusca, a phylum with species affected by exogenous estrogens, it is unclear whether Hirudinea may also be impacted. A whole-lake experiment was done at the Experimental Lakes Area in Ontario, Canada, to assess whether 17α-ethynylestradiol (EE2) affected fishes and other species. Herein, we examined whether EE2 impacted leech community composition, species abundance, growth rates, gonad size, and cocoon production, when compared with reference lakes using a before-after-control-impact design. Each month baited leech traps were set overnight in the littoral zone at 10 sites around experimental Lake 260 and 2 reference lakes, and individuals were identified, weighed, and measured. Male and female organs of common species Haemopis marmorata were measured. Across all lakes, 9 species representing 3 families were collected. There were no apparent effects of EE2 on numbers, species richness, or community composition; however, condition in 1 of 5 species increased significantly after EE2 exposures. Total gonadosomatic index (GSI) and the GSI for all male or all female organs combined for H. marmorata were not affected by EE2 additions. However, some individual reproductive organs including relative sperm sac length (+), relative epididymis weight (-), relative vaginal bulb length (+), and relative ovisac + albumen gland length (+) changed after EE2 additions. Finally, whereas overall cocoon production was similar, it occurred earlier in the EE2-amended lake. In summary, few individual through community measures of leeches responded to low ng/L concentrations of EE2, suggesting that Hirudinea are less sensitive to this endocrine disruptor than other invertebrates and vertebrates. Environ Toxicol Chem 2020;39:1608-1619. © 2020 SETAC.
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Affiliation(s)
- Karen A Kidd
- Canadian Rivers Institute and Biology Department, University of New Brunswick, Saint John, New Brunswick, Canada
- Department of Biology and School of Earth, Environment and Society, McMaster University, Hamilton, Ontario, Canada
| | - Stephanie D Graves
- Canadian Rivers Institute and Biology Department, University of New Brunswick, Saint John, New Brunswick, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Graydon I McKee
- Department of Biology and School of Earth, Environment and Society, McMaster University, Hamilton, Ontario, Canada
| | | | - Cheryl L Podemski
- Freshwater Institute, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
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Zapata-Restrepo LM, Hauton C, Williams ID, Jensen AC, Hudson MD. Effects of the interaction between temperature and steroid hormones on gametogenesis and sex ratio in the European flat oyster (Ostrea edulis). Comp Biochem Physiol A Mol Integr Physiol 2019; 236:110523. [DOI: 10.1016/j.cbpa.2019.06.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/23/2019] [Accepted: 06/26/2019] [Indexed: 12/31/2022]
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Hallmann A, Konieczna L, Swiezak J, Milczarek R, Smolarz K. Aromatisation of steroids in the bivalve Mytilus trossulus. PeerJ 2019; 7:e6953. [PMID: 31198629 PMCID: PMC6535040 DOI: 10.7717/peerj.6953] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 04/12/2019] [Indexed: 11/20/2022] Open
Abstract
In this study, we demonstrated the presence of the enzymatic complex able to perform aromatization (estrogen synthesis) in both, the microsomal and mitochondrial fractions of gills and gonads from Mytilus trossulus. Based on in vitro experiments, we highlighted the importance of temperature as the limiting factor of aromatisation efficiency (AE) in mussels. After testing range of temperatures (4–23 °C), the highest AE was found during incubation at 8 °C and pH 7.6 (41.66 pmol/h/mg protein in gills and 58.37 pmol/h/mg protein in gonads). The results were confirmed during field studies where the most efficient aromatisation occurred in bivalves collected in spring while the least effective in those collected in winter. During in vitro studies, AE turned out to be more intensive in female gonads than in male gonads. The process was also more intensive in mitochondrial fraction than in microsomal one (62.97 pmol/h/mg protein in male gills and 73.94 pmol/h/mg protein in female gonads). Enzymatic complex (aromatase-like enzyme) catalysing aromatisation in mussels was found to be insensitive to inhibitory effect of selective inhibitors of mammalian aromatase such as letrozole and anastrazole, suggesting its different structure from vertebrate aromatase. Further in vivo studies using 13C-labeled steroids at 8 °C temperature window confirmed that bivalves are able to uptake testosterone and androstenedione from the ambient environment and metabolise them to estrone and 17β-estradiol thus confirming endogenous estrogen’ synthesis.
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Affiliation(s)
- Anna Hallmann
- Department of Pharmaceutical Biochemistry, Medical University of Gdańsk, Gdańsk, Poland
| | - Lucyna Konieczna
- Department of Pharmaceutical Chemistry, Medical University of Gdańsk, Gdańsk, Poland
| | - Justyna Swiezak
- Department of Marine Ecosystem Functioning, University of Gdańsk, Gdynia, Poland
| | - Ryszard Milczarek
- Department of Pharmaceutical Biochemistry, Medical University of Gdańsk, Gdańsk, Poland
| | - Katarzyna Smolarz
- Department of Marine Ecosystem Functioning, University of Gdańsk, Gdynia, Poland
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Batista-Andrade JA, Caldas SS, Batista RM, Castro IB, Fillmann G, Primel EG. From TBT to booster biocides: Levels and impacts of antifouling along coastal areas of Panama. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:243-252. [PMID: 29179127 DOI: 10.1016/j.envpol.2017.11.063] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/15/2017] [Accepted: 11/19/2017] [Indexed: 06/07/2023]
Abstract
Antifouling biocides in surface sediments and gastropod tissues were assessed for the first time along coastal areas of Panama under the influence of maritime activities, including one of the world's busiest shipping zones: the Panama Canal. Imposex incidence was also evaluated in five muricid species distributed along six coastal areas of Panama. This TBT-related biological alteration was detected in three species, including the first report in Purpura panama. Levels of organotins (TBT, DBT, and MBT) in gastropod tissues and surficial sediments ranged from <5 to 104 ng Sn g-1 and <1-149 ng Sn g-1, respectively. In addition, fresh TBT inputs were observed in areas considered as moderate to highly contaminated mainly by inputs from fishing and leisure boats. Regarding booster biocides, TCMTB and dichlofluanid were not detected in any sample, while irgarol 1051, diuron and DCOIT levels ranged from <0.08 to 2.8 ng g-1, <0.75-14.1 ng g-1, and <0.38-81.6 ng g-1, respectively. The highest level of TBT (149 ng Sn g-1) and irgarol 1051 (2.8 ng g-1), as well as relevant level of DCOIT (5.7 ng g-1), were detected in a marina used by recreational boats. Additionally, relatively high diuron values (14.1 ng g-1) were also detected in the Panama Canal associate to a commercial port. DCOIT concentrations were associated with the presence of antifouling paint particles in sediments obtained nearby shipyard or boat maintenance sites. The highest levels of TBT, irgarol 1051, and diuron exceeded international sediment quality guidelines indicating that toxic effects could be expected in coastal areas of Panama. Thus, the simultaneous impacts produced by new and old generations of antifouling paints highlight a serious environmental issue in Panamanian coastal areas.
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Affiliation(s)
- Jahir Antonio Batista-Andrade
- Post-graduate Program in Technological and Environmental Chemistry, Escola de Química e Alimentos, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil
| | - Sergiane Souza Caldas
- Post-graduate Program in Technological and Environmental Chemistry, Escola de Química e Alimentos, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil
| | - Rodrigo Moço Batista
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática (CONECO), Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96203-900, Brazil
| | - Italo Braga Castro
- Departamento de Ciências do Mar, Universidade Federal de São Paulo, Santos, SP 11030-400, Brazil
| | - Gilberto Fillmann
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática (CONECO), Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96203-900, Brazil
| | - Ednei Gilberto Primel
- Post-graduate Program in Technological and Environmental Chemistry, Escola de Química e Alimentos, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil.
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12
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Prisco M, Agnese M, De Marino A, Andreuccetti P, Rosati L. Spermatogenic Cycle and Steroidogenic Control of Spermatogenesis in Mytilus galloprovincialis Collected in the Bay of Naples. Anat Rec (Hoboken) 2017; 300:1881-1894. [PMID: 28658561 DOI: 10.1002/ar.23626] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 12/29/2022]
Abstract
The aim of the present article was to study the spermatogenic cycle of Mytilus galloprovincialis collected in the Bay of Naples during a whole year and to acquire new insights into the mechanism of control. Knowledge of the Mytilus cycle in this geographic area is of particular interest as, to the best of our knowledge, the male gonad cycle has been hitherto unexplored. Testis organization was evaluated together with the localization of the enzymes 3β-HSD, 17β-HSD, and P450-aromatase, which are strictly connected to the synthesis of two key hormones involved in the testis activity: testosterone and 17β-estradiol. It was demonstrated that: (1) the spermatogenic cycle starts in late Summer-early Fall and continues until early Winter, when the first spawning occurs; after rapid gonad restoration, several spawning events take place until June, when the testis becomes non-active again; (2) in the testis, true Leydig and Sertoli cells are present; (3) during the reproductive period, Sertoli, Leydig, germ, and adipogranular cells (ADGs) are positive to 3β-HSD and 17β-HSD, while only germ cells are positive to P450 aromatase; by contrast, during the resting period, only ADGs are positive to 3β-HSD and 17β-HSD, and P450-aromatase is no longer recognizable. The presence of a hermaphrodite sample is also described. Anat Rec, 2017. © 2017 Wiley Periodicals, Inc. Anat Rec, 300:1881-1894, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Marina Prisco
- Department of Biology, Federico II Naples University, Naples, Italy
| | - Marisa Agnese
- Department of Biology, Federico II Naples University, Naples, Italy
| | | | | | - Luigi Rosati
- Department of Biology, Federico II Naples University, Naples, Italy
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13
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Batista-Andrade JA, Caldas SS, de Oliveira Arias JL, Castro IB, Fillmann G, Primel EG. Antifouling booster biocides in coastal waters of Panama: First appraisal in one of the busiest shipping zones. MARINE POLLUTION BULLETIN 2016; 112:415-419. [PMID: 27496683 DOI: 10.1016/j.marpolbul.2016.07.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/19/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
A baseline study for antifouling booster biocides in coastal waters of Panama is presented. Solid Phase Extraction (SPE) was used for extraction and Liquid Chromatography tandem Mass Spectrometry (LC-MS/MS) was applied for the quantification of irgarol 1051, diuron, (2-thiocyanomethylthio)benzothiazole (TCMTB), 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT) and dichlofluanid. TCMTB, DCOIT and dichlofluanid were not detected in any seawater sample, while irgarol 1051 and diuron were found in four out of thirteen areas (<0.3 to 5.0ngL-1 and <2.7 to 70ngL-1, respectively). Although the hotspots were identified in areas influenced by marinas and in one of the ports, diuron and irgarol 1051 levels were all lower than the threshold levels set by the Environmental Quality Standard of United Kingdom. However, this is only a snapshot of the status of costal water contamination by antifouling booster biocides and a more comprehensive assessment is needed to assess risks associated to long term exposure.
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Affiliation(s)
- Jahir Antonio Batista-Andrade
- Programa de Pós-graduação em Química Tecnológica e Ambiental, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Escola de Química e Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil
| | - Sergiane Souza Caldas
- Programa de Pós-graduação em Química Tecnológica e Ambiental, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Escola de Química e Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil
| | - Jean Lucas de Oliveira Arias
- Programa de Pós-graduação em Química Tecnológica e Ambiental, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Escola de Química e Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil
| | - Italo Braga Castro
- Departamento de Ciências do Mar, Universidade Federal de São Paulo, Santos, SP 11030-400, Brazil
| | - Gilberto Fillmann
- Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96203-900, Brazil
| | - Ednei Gilberto Primel
- Programa de Pós-graduação em Química Tecnológica e Ambiental, Laboratório de Análises de Compostos Orgânicos e Metais (LACOM), Escola de Química e Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96201-900, Brazil.
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14
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Di Cosmo A, Polese G. Neuroendocrine-Immune Systems Response to Environmental Stressors in the Cephalopod Octopus vulgaris. Front Physiol 2016; 7:434. [PMID: 27733834 PMCID: PMC5039199 DOI: 10.3389/fphys.2016.00434] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 09/13/2016] [Indexed: 12/11/2022] Open
Abstract
Under a continuous changing environment, animals are challenged with stresses and stimuli which demanding adaptation at behavioral and physiological levels. The adaptation strategies are finely regulated by animal nervous, endocrine, and immune systems. Although it's been established by now the usage of integrative approach to the study the endocrine and nervous systems (neuroendocrine), yet our understanding of how they cooperate with the immune system remains far from complete. The possible role that immune system plays as a component of the network has only been recognized recently. Octopus vulgaris is an important member of cephalopods and is considered as a model species, with considerable information about the neuroendocrine and immune systems. In the current review, we anticipate to shed light on the complexity and cross talk among the three systems and how they cooperate in setting physiological response to stresses-stimuli in O. vulgaris as a target species and primary example.
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Affiliation(s)
- Anna Di Cosmo
- Department of Biology, University of Napoli Federico II Napoli, Italy
| | - Gianluca Polese
- Department of Biology, University of Napoli Federico II Napoli, Italy
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15
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Pope ND, Childs K, Dang C, Davey MS, O'Hara SCM, Langston K, Minier C, Pascoe PL, Shortridge E, Langston WJ. Intersex in the clam Scrobicularia plana (Da Costa): Widespread occurrence in English Channel estuaries and surrounding areas. MARINE POLLUTION BULLETIN 2015; 95:598-609. [PMID: 25837773 DOI: 10.1016/j.marpolbul.2015.02.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 02/26/2015] [Accepted: 02/26/2015] [Indexed: 06/04/2023]
Abstract
Estuarine clams Scrobicularia plana were sampled from 108 intertidal locations around the English Channel and adjacent areas. Although S. plana is believed to be a strict gonochorist, 58% of the populations sampled included intersexed individuals (described as male clams exhibiting ovotestis). Over the entire region, on average, 8.6% of male clams exhibited intersex, although proportions of affected males ranged from 0% to 53% depending on location. The severity of intersex was assessed using a simple classification scale, with the majority of individuals showing low levels of impact. Sex ratios were significantly skewed at some sites. There were no significant relationships between incidence or severity of intersex; or with size or parasitism of individual clams. Intersex in S. plana is a useful tool to assess endocrine disruptive effects in estuaries, although mechanisms of impact and causative agents remain uncertain.
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Affiliation(s)
- N D Pope
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK.
| | - K Childs
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - C Dang
- Laboratory of Ecotoxicology, Universite du Havre, BP540, 76058 Le Havre, France
| | - M S Davey
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - S C M O'Hara
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - K Langston
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - C Minier
- Laboratory of Ecotoxicology, Universite du Havre, BP540, 76058 Le Havre, France
| | - P L Pascoe
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - E Shortridge
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - W J Langston
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
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Avila-Poveda OH, Montes-Pérez RC, Koueta N, Benítez-Villalobos F, Ramírez-Pérez JS, Jimenez-Gutierrez L, Rosas C. Seasonal changes of progesterone and testosterone concentrations throughout gonad maturation stages of the Mexican octopus,Octopus maya(Octopodidae: Octopus). MOLLUSCAN RESEARCH 2015. [DOI: 10.1080/13235818.2015.1045055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Expression of gene, protein and immunohistochemical localization of the estrogen receptor isoform ERα1 in male rainbow trout lymphoid organs; indication of the role of estrogens in the regulation of immune mechanisms. Comp Biochem Physiol B Biochem Mol Biol 2014; 174:53-61. [DOI: 10.1016/j.cbpb.2014.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/19/2014] [Accepted: 06/08/2014] [Indexed: 11/22/2022]
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18
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Liu J, Zhang Z, Zhang L, Liu X, Yang D, Ma X. Variations of estradiol-17β and testosterone levels correlated with gametogenesis in the gonad of Zhikong scallop (Chlamys farreri) during annual reproductive cycle. CAN J ZOOL 2014. [DOI: 10.1139/cjz-2013-0202] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
To assess the potential roles of sex steroids in modulating reproductive processes in the Zhikong scallop (Chlamys farreri (Jones and Preston, 1904)), variations in estradiol-17β (E2) and testosterone (T) levels in gonads were examined monthly from January to December 2012 by enzyme-linked immunosorbent assay (ELISA). The mean concentrations of E2 and T in gonads ranged from 75.07 to 666.24 pg/g and from 91.09 to 506.28 pg/g, respectively. Concentrations of E2 were significantly higher in ovaries than in testes, while T concentrations were higher in testes than in ovaries during gametogenesis. Concentrations of E2 in females and T in males increased with development and maturation of gonad, attained the highest value before spawning, and decreased rapidly after spawning. A positive correlation between E2 levels and oocyte diameters (r = 0.743, P < 0.05, n = 25) was observed, suggesting that E2 may play a role in oogenesis. These findings indicate that E2 and T, which are highly correlated with the reproductive cycle, may play an important role in sex determination, sex differentiation, gametogenesis, and spawning in C. farreri.
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Affiliation(s)
- J. Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
| | - Z. Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
| | - L. Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
| | - X. Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
| | - D. Yang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
| | - X. Ma
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, People’s Republic of China
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Avila-Poveda OH, Montes-Pérez RC, Benitez-Villalobos F, Rosas C. Development and Validation of a Solid-Phase Radioimmunoassay for Measuring Progesterone and Testosterone in Octopus Gonad Extracts. MALACOLOGIA 2013. [DOI: 10.4002/040.056.0209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Morishita F, Furukawa Y, Matsushima O, Minakata H. Regulatory actions of neuropeptides and peptide hormones on the reproduction of molluscsThe present review is one of a series of occasional review articles that have been invited by the Editors and will feature the broad range of disciplines and expertise represented in our Editorial Advisory Board. CAN J ZOOL 2010. [DOI: 10.1139/z10-041] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Reproductive success of individual animals is essential for the survival of any species. Molluscs have adapted to a wide variety of environments (freshwater, brackish water, seawater, and terrestrial habits) and have evolved unique tactics for reproduction. Both of these features attract the academic interests of scientists. Because neuropeptides and peptide hormones play critical roles in neural and neurohormonal regulation of physiological functions and behaviors in this animal group, the regulatory actions of these messengers in reproduction have been extensively investigated. In this review, we will briefly summarize how peptidergic messengers are involved in various aspects of reproduction, using some peptides such as egg-laying hormone, caudo-dorsal cell hormone, APGWamide, and gonadotropin-releasing hormone as typical examples.
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Affiliation(s)
- Fumihiro Morishita
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Laboratory of Neurobiology, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan
- Department of Global Environment Studies, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5193, Japan
- Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan
| | - Yasuo Furukawa
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Laboratory of Neurobiology, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan
- Department of Global Environment Studies, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5193, Japan
- Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan
| | - Osamu Matsushima
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Laboratory of Neurobiology, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan
- Department of Global Environment Studies, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5193, Japan
- Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan
| | - Hiroyuki Minakata
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Laboratory of Neurobiology, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan
- Department of Global Environment Studies, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5193, Japan
- Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan
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Alterations in the developing testis transcriptome following embryonic vinclozolin exposure. Reprod Toxicol 2010; 30:353-64. [PMID: 20566332 DOI: 10.1016/j.reprotox.2010.05.086] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Revised: 04/17/2010] [Accepted: 05/28/2010] [Indexed: 12/31/2022]
Abstract
The current study investigates the direct effects of in utero vinclozolin exposure on the developing F1 generation rat testis transcriptome. Previous studies have demonstrated that exposure to vinclozolin during embryonic gonadal sex determination induces epigenetic modifications of the germ line and transgenerational adult onset disease states. Microarray analyses were performed to compare control and vinclozolin treated testis transcriptomes at embryonic days 13, 14 and 16. A total of 576 differentially expressed genes were identified and the major cellular functions and pathways associated with these altered transcripts were examined. The sets of regulated genes at the different development periods were found to be transiently altered and distinct. Categorization by major known functions of altered genes was performed. Specific cellular process and pathway analyses suggest the involvement of Wnt and calcium signaling, vascular development and epigenetic mechanisms as potential mediators of the direct F1 generation actions of vinclozolin.
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