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Fabbri E, Balbi T, Canesi L. Neuroendocrine functions of monoamines in invertebrates: Focus on bivalve molluscs. Mol Cell Endocrinol 2024; 588:112215. [PMID: 38548145 DOI: 10.1016/j.mce.2024.112215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 03/03/2024] [Accepted: 03/21/2024] [Indexed: 04/01/2024]
Abstract
Monoamines (MA) such as serotonin, catecholamines (dopamine, norepinephrine, epinephrine), and trace amines (octopamine, tyramine), are neurotransmitters and neuroendocrine modulators in vertebrates, that contribute to adaptation to the environment. Although MA are conserved in evolution, information is still fragmentary in invertebrates, given the diversity of phyla and species. However, MA are crucial in homeostatic processes in these organisms, where the absence of canonical endocrine glands in many groups implies that the modulation of physiological functions is essentially neuroendocrine. In this review, we summarize available information on MA systems in invertebrates, with focus on bivalve molluscs, that are widespread in different aquatic environments, where they are subjected to a variety of environmental stimuli. Available data are reviewed on the presence of the different MA in bivalve tissues, their metabolism, target cells, signaling pathways, and the physiological functions modulated in larval and adult stages. Research gaps and perspectives are highlighted, in order to enrich the framework of knowledge on MA neuroendocrine functions, and on their role in adaptation to ongoing and future environmental changes.
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Affiliation(s)
- Elena Fabbri
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Via Sant'Alberto 163, 48123, Ravenna, Italy; National Biodiversity Future Center, 90133, Palermo, Italy.
| | - Teresa Balbi
- Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genoa, Italy; National Biodiversity Future Center, 90133, Palermo, Italy
| | - Laura Canesi
- Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genoa, Italy; National Biodiversity Future Center, 90133, Palermo, Italy
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2
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Imiuwa ME, Baynes A, Routledge EJ. Understanding target-specific effects of antidepressant drug pollution on molluscs: A systematic review protocol. PLoS One 2023; 18:e0287582. [PMID: 37368915 DOI: 10.1371/journal.pone.0287582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND The environmental prevalence of widely prescribed human pharmaceuticals that target key evolutionary conserved biomolecules present across phyla is concerning. Antidepressants, one of the most widely consumed pharmaceuticals globally, have been developed to target biomolecules modulating monoaminergic neurotransmission, thus interfering with the endogenous regulation of multiple key neurophysiological processes. Furthermore, rising prescription and consumption rates of antidepressants caused by the burgeoning incidence of depression is consistent with increasing reports of antidepressant detection in aquatic environments worldwide. Consequently, there are growing concerns that long-term exposure to environmental levels of antidepressants may cause adverse drug target-specific effects on non-target aquatic organisms. While these concerns have resulted in a considerable body of research addressing a range of toxicological endpoints, drug target-specific effects of environmental levels of different classes of antidepressants in non-target aquatic organisms remain to be understood. Interestingly, evidence suggests that molluscs may be more vulnerable to the effects of antidepressants than any other animal phylum, making them invaluable in understanding the effects of antidepressants on wildlife. Here, a protocol for the systematic review of literature to understand drug target-specific effects of environmental levels of different classes of antidepressants on aquatic molluscs is described. The study will provide critical insight needed to understand and characterize effects of antidepressants relevant to regulatory risk assessment decision-making, and/or direct future research efforts. METHODS The systematic review will be conducted in line with the guidelines by the Collaboration for Environmental Evidence (CEE). A literature search on Scopus, Web of Science, PubMed, as well as grey literature databases, will be carried out. Using predefined criteria, study selection, critical appraisal and data extraction will be done by multiple reviewers with a web-based evidence synthesis platform. A narrative synthesis of outcomes of selected studies will be presented. The protocol has been registered in the Open Science Framework (OSF) registry with the registration DOI: 10.17605/OSF.IO/P4H8W.
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Affiliation(s)
- Maurice E Imiuwa
- Faculty of life Sciences, Department of Animal and Environmental Biology, University of Benin, Benin City, Nigeria
- College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Alice Baynes
- College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Edwin J Routledge
- College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, United Kingdom
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3
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Kotsyuba E, Dyachuk V. Role of the Neuroendocrine System of Marine Bivalves in Their Response to Hypoxia. Int J Mol Sci 2023; 24:ijms24021202. [PMID: 36674710 PMCID: PMC9865615 DOI: 10.3390/ijms24021202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Mollusks comprise one of the largest phylum of marine invertebrates. With their great diversity of species, various degrees of mobility, and specific behavioral strategies, they haveoccupied marine, freshwater, and terrestrial habitats and play key roles in many ecosystems. This success is explained by their exceptional ability to tolerate a wide range of environmental stresses, such as hypoxia. Most marine bivalvemollusksare exposed to frequent short-term variations in oxygen levels in their marine or estuarine habitats. This stressfactor has caused them to develop a wide variety of adaptive strategies during their evolution, enabling to mobilize rapidly a set of behavioral, physiological, biochemical, and molecular defenses that re-establishing oxygen homeostasis. The neuroendocrine system and its related signaling systems play crucial roles in the regulation of various physiological and behavioral processes in mollusks and, hence, can affect hypoxiatolerance. Little effort has been made to identify the neurotransmitters and genes involved in oxygen homeostasis regulation, and the molecular basis of the differences in the regulatory mechanisms of hypoxia resistance in hypoxia-tolerant and hypoxia-sensitive bivalve species. Here, we summarize current knowledge about the involvement of the neuroendocrine system in the hypoxia stress response, and the possible contributions of various signaling molecules to this process. We thusprovide a basis for understanding the molecular mechanisms underlying hypoxic stress in bivalves, also making comparisons with data from related studies on other species.
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Liu Z, An M, Geng X, Wu Z, Cai W, Tang J, Zhang K, Zhou Z. The scleractinian coral Pocillopora damicornis relies on neuroendocrine regulation to cope with polycyclic aromatic hydrocarbons under heat stress. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120565. [PMID: 36332711 DOI: 10.1016/j.envpol.2022.120565] [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: 06/24/2022] [Revised: 10/05/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are highly toxic environmental pollutants and are threatening scleractinian corals. In this study, PAHs treatment did not induce significant physiological responses of the coral Pocillopora damicornis and its algal symbionts, but biological processes including response to toxin, drug metabolic, and oxidation reduction were triggered at the mRNA level. These results implied that PAHs could be a group of slow-acting environmental toxicants, whose effects were moderate but persistent. Besides, it was interesting to find that PAHs activated the neuroendocrine system in the coral by triggering the expression of monoaminergic and acetylcholinergic system related genes, indicating that PAHs might function as environmental hormones. Moreover, the combined treatments of PAHs and heat caused a much obvious effect on the coral and its algal symbionts by elevating antioxidant activity and suppressing photosynthesis in the symbionts. Results from the transcriptome data further indicated that corals might perform stress responses upon PAHs and heat challenges through the TNF and apoptosis pathways, which perhaps was modulated by the neuroendocrine system of corals. Collectively, our survey demonstrates that the PAHs can function as environmental hormones and activate the neuroendocrine regulation in scleractinian corals, which may contribute to the stress responses of symbiotic association by modulating photosynthesis, antioxidation, and apoptosis.
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Affiliation(s)
- Zhaoqun Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China
| | - Mingxun An
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China
| | - Xinxing Geng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China
| | - Zhongjie Wu
- Hainan Academy of Ocean and Fisheries Sciences, Haikou, 571126, China
| | - Wenqi Cai
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China; Hainan Academy of Ocean and Fisheries Sciences, Haikou, 571126, China
| | - Jia Tang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China
| | - Kaidian Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China
| | - Zhi Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, 570228, China.
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Yang Y, Yu Q, Zhang C, Wang X, He L, Huang Y, Li E, Qin J, Chen L. Acute thiamethoxam exposure induces hepatotoxicity and neurotoxicity in juvenile Chinese mitten crab (Eriocheir sinensis). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114399. [PMID: 36508784 DOI: 10.1016/j.ecoenv.2022.114399] [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: 07/30/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
The similar nervous system structure between crustaceans and insects and the high-water solubility of thiamethoxam can lead to the more severe toxicity of thiamethoxam to crustaceans. However, the effects of thiamethoxam on crustaceans are unclear. Therefore, a 96-h acute toxicity test was performed to explore the hepatotoxicity and neurotoxicity effects of thiamethoxam on Chinese mitten crab (Eriocheir sinensis) at concentrations 0 µg/L, 150 µg/L and 300 µg/L. The antioxidant and detoxification systems (including phases I and II) were significantly activated after exposure of juvenile crabs to thiamethoxam for 24 h in 300 µg/L group, whereas the toxic activation effect in 150 μg/L group was delayed. Moreover, a similar pattern was observed for the transcription levels of immune-related genes. Further analysis of inflammatory signaling pathway-related genes showed that thiamethoxam exposure with 300 µg/L for 24 h may induce a pro-inflammatory response through the NF-κB pathway. In contrast, the gene expression levels in 150 µg/L group were significantly upregulated compared with 0 µg/L group after 96 h. In addition, although the acute exposure of 150 μg/L thiamethoxam did not seem to induce significant neurotoxicity, the acetylcholinesterase activity was significantly decreased in 300 μg/L group after thiamethoxam exposure for 96 h. Correspondingly, thiamethoxam exposure with 300 µg/L for 24 h resulted in significantly downregulated transcriptional levels of synaptic transmission-related genes (e.g. dopamine-, gamma-aminobutyric acid- and serotonin-related receptors). Therefore, thiamethoxam may be harmful and cause potential toxic threats such as neurotoxicity and metabolic damage to crustaceans.
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Affiliation(s)
- Yiwen Yang
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Qiuran Yu
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Cong Zhang
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Xiaodan Wang
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Long He
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Yuxing Huang
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Erchao Li
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan Aquaculture Breeding Engineering Research Center, College of Marine Sciences, Hainan University, Haikou, Hainan 570228, China
| | - Jianguang Qin
- College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia
| | - Liqiao Chen
- Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China.
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Li Q, Jiang B, Zhang Z, Huang Y, Xu Z, Chen X, Hou X, Cai J, Huang Y, Jian J. Serotonin system is partially involved in immunomodulation of Nile tilapia (Oreochromis niloticus) immune cells. Front Immunol 2022; 13:944388. [PMID: 35967362 PMCID: PMC9366525 DOI: 10.3389/fimmu.2022.944388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/07/2022] [Indexed: 11/23/2022] Open
Abstract
Serotonin (5-hydroxytryptamine) is a well-known neurotransmitter affecting emotion, behavior, and cognition. Additionally, numerous immunomodulatory functions of serotonin have been discovered in mammals. However, the regulatory role of the serotonin system in fish immunity remains unclear. In this study, various serotonergic markers in Nile tilapia (Oreochromis niloticus) were identified and characterized. The involvement of the serotonin system during bacterial infection was investigated. Moreover, the expression characteristics and specific functions of serotonergic markers within Nile tilapia immune cells were also assessed. Overall, 22 evolutionarily conserved serotonergic marker genes in Nile tilapia were cloned and characterized. Transcriptional levels of these molecules were most abundant in the brain, and their transcripts were induced during Streptococcus agalactiae infection. Nevertheless, few serotonergic markers exist on Nile tilapia immune cells, and no distinct immunomodulation effect was observed during an immune response. The present study lays a theoretical foundation for further investigation of the immunological mechanisms in fish as well as the evolution of the serotonin system in animals.
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Affiliation(s)
- Qi Li
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Baijian Jiang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Zhiqiang Zhang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Yongxiong Huang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Zhou Xu
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Xinjin Chen
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
| | - Xitan Hou
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining, China
| | - Jia Cai
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, China
| | - Yu Huang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, China
- *Correspondence: Yu Huang, ; Jichang Jian,
| | - Jichang Jian
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen, China
- *Correspondence: Yu Huang, ; Jichang Jian,
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Effect of Air Exposure-Induced Hypoxia on Neurotransmitters and Neurotransmission Enzymes in Ganglia of the Scallop Azumapecten farreri. Int J Mol Sci 2022; 23:ijms23042027. [PMID: 35216143 PMCID: PMC8878441 DOI: 10.3390/ijms23042027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 02/04/2023] Open
Abstract
The nervous system expresses neuromolecules that play a crucial role in regulating physiological processes. Neuromolecule synthesis can be regulated by oxygen-dependent enzymes. Bivalves are a convenient model for studying air exposure-induced hypoxia. Here, we studied the effects of hypoxia on the expression and dynamics of neurotransmitters, and on neurotransmitter enzyme distribution, in the central nervous system (CNS) of the scallop Azumapecten farreri. We analyzed the expression of the neurotransmitters FMRFamide and serotonin (5-HT) and the choline acetyltransferase (CHAT) and universal NO-synthase (uNOS) enzymes during air exposure-induced hypoxia. We found that, in early-stage hypoxia, total serotonin content decreased in some CNS regions but increased in others. CHAT-lir cell numbers increased in all ganglia after hypoxia; CHAT probably appears de novo in accessory ganglia. Short-term hypoxia caused increased uNOS-lir cell numbers, while long-term exposure led to a reduction in their number. Thus, hypoxia weakly influences the number of FMRFamide-lir neurons in the visceral ganglion and does not affect peptide expression in the pedal ganglion. Ultimately, we found that the localization and level of synthesis of neuromolecules, and the numbers of cells expressing these molecules, vary in the scallop CNS during hypoxia exposure. This indicates their possible involvement in hypoxia resistance mechanisms.
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Canesi L, Miglioli A, Balbi T, Fabbri E. Physiological Roles of Serotonin in Bivalves: Possible Interference by Environmental Chemicals Resulting in Neuroendocrine Disruption. Front Endocrinol (Lausanne) 2022; 13:792589. [PMID: 35282445 PMCID: PMC8913902 DOI: 10.3389/fendo.2022.792589] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 01/25/2022] [Indexed: 11/15/2022] Open
Abstract
Contaminants of Emerging Concerns (CECs) are defined as chemicals not commonly monitored in aquatic ecosystems, but with the potential to cause adverse effects on biota. CECs include Endocrine Disrupting Chemicals (EDCs) and Neuro-Endocrine disruptors (NEDs) of vertebrates. However, most invertebrates only rely on neuroendocrine systems to maintain homeostatic processes. Although conserved neuroendocrine components have been characterized in ecologically relevant groups, limited knowledge on invertebrate neuroendocrinology makes it difficult to define EDCs and NEDs in most species. The monoamine serotonin (5-hydroxytryptamine, 5-HT) acts both as a neurotransmitter and as a peripheral hormone in mammals. In molluscs, 5-HT is involved in multiple physiological roles and molecular components of the serotonergic system have been identified. This review is focused on the effects of CECs on the serotonergic system of bivalve molluscs. Bivalves are widespread in all aquatic environments, estuarine and coastal areas in particular, where they are exposed to a variety of chemicals. In bivalves, 5-HT is involved in gametogenesis and spawning, oocyte maturation and sperm motility, regulates heart function, gill ciliary beating, mantle/siphon function, the ''catch'' state of smooth muscle and immune responses. Components of 5-HT transduction (receptors and signaling pathways) are being identified in several bivalve species. Different CECs have been shown to affect bivalve serotonergic system. This particularly applies to antidepressants, among the most commonly detected human pharmaceuticals in the aquatic environment. In particular, selective serotonin reuptake inhibitors (SSRIs) are frequently detected in seawater and in bivalve tissues. Information available on the effects and mechanisms of action of SSRIs on the serotonergic system of adult bivalves is summarized. Data are also reported on the effects of CECs on development of neuroendocrine pathways of early larval stages, in particular on the effects of model EDCs in the marine mussel Mytilus galloprovincialis. Overall, available data point at the serotonergic system as a sensitive target for neuroendocrine disruption in bivalves. The results contribute drawing Adverse Outcome Pathways (AOPs) for model EDCs and SSRIs in larvae and adults. However, basic research on neuroendocrine signaling is still needed to evaluate the potential impact of neuroendocrine disruptors in key invertebrate groups of aquatic ecosystems.
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Affiliation(s)
- Laura Canesi
- Environmental Physiology Laboratory, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
- *Correspondence: Laura Canesi,
| | - Angelica Miglioli
- Environmental Physiology Laboratory, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
- Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, Villefranche-sur-mer, France
| | - Teresa Balbi
- Environmental Physiology Laboratory, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
| | - Elena Fabbri
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Ravenna, Italy
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Arulkumar A, Paramithiotis S, Paramasivam S. Biogenic amines in fresh fish and fishery products and emerging control. AQUACULTURE AND FISHERIES 2021. [DOI: 10.1016/j.aaf.2021.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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10
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Moyen NE, Bump PA, Somero GN, Denny MW. Establishing typical values for hemocyte mortality in individual California mussels, Mytilus californianus. FISH & SHELLFISH IMMUNOLOGY 2020; 100:70-79. [PMID: 32135339 DOI: 10.1016/j.fsi.2020.02.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/24/2020] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
Hemocytes are immune cells in the hemolymph of invertebrates that play multiple roles in response to stressors; hemocyte mortality can thus serve as an indicator of overall animal health. However, previous research has often analyzed hemolymph samples pooled from several individuals, which precludes tracking individual responses to stressors over time. The ability to track individuals is important, however, because large inter-individual variation in response to stressors can confound the interpretation of pooled samples. Here, we describe protocols for analysis of inter- and intra-individual variability in hemocyte mortality across repeated hemolymph samples of California mussels, Mytilus californianus, free from typical abiotic stressors. To assess individual variability in hemocyte mortality with serial sampling, we created four groups of 15 mussels each that were repeatedly sampled four times: at baseline (time zero) and three subsequent times separated by either 24, 48, 72, or 168 h. Hemocyte mortality was assessed by fluorescence-activated cell sorting (FACS) of cells stained with propidium iodide. Our study demonstrates that hemolymph can be repeatedly sampled from individual mussels without mortality; however, there is substantial inter- and intra-individual variability in hemocyte mortality through time that is partially dependent on the sampling interval. Across repeated samples, individual mussels' hemocyte mortality had, on average, a range of ~6% and a standard deviation of ~3%, which was minimized with sampling periods ≥72 h apart. Due to this intra-individual variability, obtaining ≥2 samples from a specimen will more accurately establish an individual's baseline. Pooled-sample means were similar to individual-sample means; however, pooled samples masked the individual variation in each group. Overall, these data lay the foundation for future work exploring individual mussels' temporal responses to various stressors on a cellular level.
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Affiliation(s)
- Nicole E Moyen
- Hopkins Marine Station, Department of Biology, Stanford University, United States.
| | - Paul A Bump
- Hopkins Marine Station, Department of Biology, Stanford University, United States
| | - George N Somero
- Hopkins Marine Station, Department of Biology, Stanford University, United States
| | - Mark W Denny
- Hopkins Marine Station, Department of Biology, Stanford University, United States
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Qin X, Jin X, Zhou K, Li H, Wang Q, Li W, Wang Q. EsGPCR89 regulates cerebral antimicrobial peptides through hemocytes in Eriocheir sinensis. FISH & SHELLFISH IMMUNOLOGY 2019; 95:151-162. [PMID: 31605765 DOI: 10.1016/j.fsi.2019.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/02/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
G protein-coupled receptors (GPCRs) are important transmembrane receptors that participate in diverse physiological processes including metabolism, cell growth and immune processes by transmitting extracellular signals to intracellular effectors. In this study, a gene belonging to the GPCR family was cloned from Eriocheir sinensis and named EsGPCR89. The full-length gene includes an open reading frame (ORF) of 465 amino acid residues, and bioinformatic analysis confirmed the high conservation between species. EsGPCR89 was detected in various tissues of E. sinensis, and was up-regulated in brain following Staphylococcus aureus infection. Expression levels of cerebral antimicrobial peptides (AMPs) were also up-regulated following bacterial challenge, reflecting their function in cerebral immunity. Additionally, EsGPCR89 silencing in hemocytes by RNA interference, down-regulated AMPs in brain after S. aureus infection. Moreover, through Immunisation assay and Polyacrylamide gel electrophoresis (SDS-PAGE) experiments, we could infer that bacterially infected hemocytes released effectors under the regulation of EsGPCR89, thereby activating transcription of cerebral AMPs. These results demonstrate that EsGPCR89 plays important roles in cerebral antimicrobial function via hemocytes.
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Affiliation(s)
- Xiang Qin
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China
| | - Xingkun Jin
- Department of Marine Biology, College of Oceanography, Hohai University, Nanjing, PR China
| | - Kaimin Zhou
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China
| | - Hao Li
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China
| | - Qiying Wang
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China
| | - Weiwei Li
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China.
| | - Qun Wang
- State Key Laboratory of Estuarine and Coastal Research, and The Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Science, East China Normal University, Shanghai, PR China.
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12
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Nagasawa K, Matsubara S, Satake H, Osada M. Functional characterization of an invertebrate gonadotropin-releasing hormone receptor in the Yesso scallop Mizuhopecten yessoensis. Gen Comp Endocrinol 2019; 282:113201. [PMID: 31199924 DOI: 10.1016/j.ygcen.2019.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/22/2019] [Accepted: 06/10/2019] [Indexed: 10/26/2022]
Abstract
The neuropeptide control of bivalve reproduction with particular reference to gonadotropin-releasing hormone (invGnRH) is a frontier yet to be investigated. Bivalves are unique because they have two forms of the invGnRH peptide; however, there has been no functional characterization of the peptide-receptor pair. Therefore, the identification of a cognate receptor is a preliminary step toward exploring the biological roles of invGnRHs in bivalves. In this study, we functionally characterize an invGnRH receptor (invGnRHR) of a bivalve, the Yesso scallop Mizuhopecten yessoensis. In the receptor assay, HEK293 cells were transfected to transiently express the M. yessoensis invGnRHR (my-invGnRHR), which was found to be localized on the plasma membrane, confirming that my-invGnRHR, similar to other G-protein-coupled receptors, functions as a membrane receptor. Using both forms of invGnRH as ligands in a function-receptor assay, my-invGnRH11aa-NH2 stimulated intracellular Ca2+ mobilization but not cyclic AMP production, whereas my-invGnRH12aa-OH did not induce increase in Ca2+ levels. Therefore, we concluded that my-invGnRHR is an endogenous receptor specific to my-invGnRH11aa-NH2 which is hypothesized to be the mature peptide. To the best of our knowledge, this is the first study reporting the functional characterization of a bivalve invGnRHR.
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Affiliation(s)
- Kazue Nagasawa
- Laboratory of Aquacultural Biology, Graduate School of Agricultural Science, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Japan
| | - Shin Matsubara
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan
| | - Honoo Satake
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan
| | - Makoto Osada
- Laboratory of Aquacultural Biology, Graduate School of Agricultural Science, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Japan.
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Liu Z, Li M, Yi Q, Wang L, Song L. The Neuroendocrine-Immune Regulation in Response to Environmental Stress in Marine Bivalves. Front Physiol 2018; 9:1456. [PMID: 30555334 PMCID: PMC6282093 DOI: 10.3389/fphys.2018.01456] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 09/26/2018] [Indexed: 12/27/2022] Open
Abstract
Marine bivalves, which include many species worldwide, from intertidal zones to hydrothermal vents and cold seeps, are important components of the ecosystem and biodiversity. In their living habitats, marine bivalves need to cope with a series of harsh environmental stressors, including biotic threats (bacterium, virus, and protozoan) and abiotic threats (temperature, salinity, and pollutants). In order to adapt to these surroundings, marine bivalves have evolved sophisticated stress response mechanisms, in which neuroendocrine regulation plays an important role. The nervous system and hemocyte are pillars of the neuroendocrine system. Various neurotransmitters, hormones, neuropeptides, and cytokines have been also characterized as signal messengers or effectors to regulate humoral and cellular immunity, energy metabolism, shell formation, and larval development in response to a vast array of environmental stressors. In this review substantial consideration will be devoted to outline the vital components of the neuroendocrine system identified in bivalves, as well as its modulation repertoire in response to environmental stressors, thereby illustrating the dramatic adaptation mechanisms of molluscs.
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Affiliation(s)
- Zhaoqun Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Functional Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Meijia Li
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
| | - Qilin Yi
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Functional Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Functional Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
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Noonin C. Involvement of Serotonin in crayfish hematopoiesis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 86:189-195. [PMID: 29778989 DOI: 10.1016/j.dci.2018.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/03/2018] [Accepted: 05/03/2018] [Indexed: 06/08/2023]
Abstract
Serotonin (5-HT) is a conserved monoamine neurotransmitter that has several physiological functions both in vertebrates and invertebrates. In addition to its well-known function in the central nervous system, 5-HT also participates in peripheral system. However, in crustaceans, the knowledge about peripheral functions of 5-HT is limited. In this study, a role of 5-HT in hematopoiesis in crayfish, Pacifastacus leniusculus, was investigated. The presence of 5-HT in crayfish plasma and the effect of 5-HT injection on hemocyte number were examined. The effects of 5-HT on hematopoietic tissue (HPT) cell proliferation and secretion of the hematopoietic cytokine, astakine 1 (Ast 1) were determined in vitro. The results from this study suggest that 5-HT has no direct effect on HPT cell proliferation, but it participates in crayfish hematopoiesis through stimulating Ast 1 cytokine release from crayfish hemocytes, and thereby affects release of new hemocytes into the circulation.
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Affiliation(s)
- Chadanat Noonin
- Department of Organismal Biology, Comparative Physiology, Uppsala University, Norbyvägen 18A, 752 36 Uppsala, Sweden.
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