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Clements KN, Ahn S, Park C, Heagy FK, Miller TH, Kassai M, Issa FA. Socially Mediated Shift in Neural Circuits Activation Regulated by Synergistic Neuromodulatory Signaling. eNeuro 2023; 10:ENEURO.0311-23.2023. [PMID: 37914408 PMCID: PMC10683552 DOI: 10.1523/eneuro.0311-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/18/2023] [Accepted: 10/22/2023] [Indexed: 11/03/2023] Open
Abstract
Animals exhibit context-dependent behavioral decisions that are mediated by specific motor circuits. In social species these decisions are often influenced by social status. Although social status-dependent neural plasticity of motor circuits has been investigated in vertebrates, little is known of how cellular plasticity translates into differences in motor activity. Here, we used zebrafish (Danio rerio) as a model organism to examine how social dominance influences the activation of swimming and the Mauthner-mediated startle escape behaviors. We show that the status-dependent shift in behavior patterns whereby dominants increase swimming and reduce sensitivity of startle escape while subordinates reduce their swimming and increase startle sensitivity is regulated by the synergistic interactions of dopaminergic, glycinergic, and GABAergic inputs to shift the balance of activation of the underlying motor circuits. This shift is driven by socially induced differences in expression of dopaminergic receptor type 1b (Drd1b) on glycinergic neurons and dopamine (DA) reuptake transporter (DAT). Second, we show that GABAergic input onto glycinergic neurons is strengthened in subordinates compared with dominants. Complementary neurocomputational modeling of the empirical results show that drd1b functions as molecular regulator to facilitate the shift between excitatory and inhibitory pathways. The results illustrate how reconfiguration in network dynamics serves as an adaptive strategy to cope with changes in social environment and are likely conserved and applicable to other social species.
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Affiliation(s)
- Katie N Clements
- Department of Biology, East Carolina University, Greenville, NC 27858
| | - Sungwoo Ahn
- Department of Mathematics, East Carolina University, Greenville, NC 27858
| | - Choongseok Park
- Department of Mathematics, North Carolina A&T State University, Greensboro, NC 27411
| | - Faith K Heagy
- Department of Biology, East Carolina University, Greenville, NC 27858
| | - Thomas H Miller
- Department of Biology, East Carolina University, Greenville, NC 27858
| | - Miki Kassai
- Department of Biochemistry and Molecular Biology, East Carolina University, Greenville, NC 27858
| | - Fadi A Issa
- Department of Biology, East Carolina University, Greenville, NC 27858
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2
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Yamashita M, Egashira Y, Nakamura S, Sakata S, Ono F. Receptor subunit compositions underly distinct potencies of a muscle relaxant in fast and slow muscle fibers. Front Physiol 2022; 13:1026646. [PMID: 36304584 PMCID: PMC9592714 DOI: 10.3389/fphys.2022.1026646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 09/28/2022] [Indexed: 11/21/2022] Open
Abstract
A line of studies in the 1960s–1980s suggested that muscle relaxants do not work uniformly on all skeletal muscles, though its mechanism has not been clarified. We showed here that a classical non-depolarizing muscle relaxant pancuronium inhibits fast muscle fibers at lower concentration compared to slow muscle fibers in zebrafish. The difference of effective concentration was observed in locomotion caused by tactile stimulation as well as in synaptic currents of the neuromuscular junction induced by motor neuron excitation. We further showed that this difference arises from the different composition of acetylcholine receptors between slow and fast muscle fibers in the neuromuscular junction of zebrafish. It will be interesting to examine the difference of subunit composition and sensitivity to muscle relaxants in other species.
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Wang L, Zhang M, Wen J, Xiang Y, Duan X, Yu C, Yan M, Zhang B, Fang P. Isoliquiritigenin Alleviates Semen Strychni-Induced Neurotoxicity by Restoring the Metabolic Pathway of Neurotransmitters in Rats. Front Pharmacol 2021; 12:762290. [PMID: 34867385 PMCID: PMC8634445 DOI: 10.3389/fphar.2021.762290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 10/26/2021] [Indexed: 12/15/2022] Open
Abstract
Acute neurotoxicity of Semen Strychni can result in sudden death in epilepsy. The detoxification method and mechanism of Semen Strychni acute poisoning have not been clarified. This experiment focused on the mechanism of Semen Strychni neurotoxicity and the alleviation effects of isoliquiritigenin. The rats were intraperitoneally injected with Semen Strychni extract (125 mg/kg), followed by oral administration of isoliquiritigenin (50 mg/kg) for 7 days. FJ-B staining was used to evaluate the degree of injury on hippocampus neurons. The concentration of monoamines, amino acids, and choline neurotransmitters, the Dopamine (DA) and 5-hydroxytryptamine (5-HT) metabolic pathway in the hippocampus, cerebellum, striatum, prefrontal cortex, hypothalamus, serum, and plasma were detected by LC-MS/MS. The expression of neurotransmitter metabolic enzymes [catechol-O-methyl transferase (COMT) and monoamine oxidase (MAO)] and neurotransmitter receptors [glutamate N-methyl-D-aspartic acid receptors (NMDARs) and gamma-aminobutyric acid type A receptor (GABRs)] were, respectively determined using ELISA and qRT-PCR. The results indicated that Semen Strychni induced neuronal degeneration in the hippocampal CA1 region. Meanwhile, Semen Strychni inhibited the mRNA expression of NMDAR1, NMDAR2A, NMDAR2B, GABRa1, GABRb2 and reduced the level of MAO, which disrupted the DA and 5-HT metabolic pathway. However, isoliquiritigenin reversed these effects. In summary, isoliquiritigenin showed alleviation effects on Semen Strychni-induced neurotoxicity, which could be attributed to restoring neurotransmitters metabolic pathway, most likely through the activation of NMDA receptors.
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Affiliation(s)
- Lu Wang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Min Zhang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jing Wen
- Third Hospital of Changsha, Changsha, China
| | - Yalan Xiang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyu Duan
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Changwei Yu
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Miao Yan
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Bikui Zhang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Pingfei Fang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
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Xiang Y, Wang C, Wen J, Zhang M, Duan X, Wang L, Yan M, Li H, Fang P. Investigation of the detoxification effect of licorice on Semen Strychni-induced acute toxicity in rats using a HPLC-Q-TOF/MS-based metabolomics approach. RSC Adv 2020; 10:44398-44407. [PMID: 35517145 PMCID: PMC9058463 DOI: 10.1039/d0ra08568e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/27/2020] [Indexed: 11/21/2022] Open
Abstract
Semen Strychni, a traditional Chinese medicine (TCM), has been widely used to treat paraplegia, facial nerve palsy and myasthenia gravis. However, its clinical application is greatly limited due to its fatal toxicity. To investigate the acute toxicity of Semen Strychni and the detoxification effect of licorice, a high-performance liquid chromatography tandem quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF/MS) based urinary metabolomics method was developed in this study. After intraperitoneal injection to rats with Semen Strychni extract, the serum biochemical indexes were changed significantly, the liver and kidney showed severe necrosis and edema. Then the poisoned rat model was subsequently used for metabolomics research. Through principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA), we finally identified 19 endogenous differential metabolites involved in amino acid metabolism, glycerophospholipid metabolism, tricarboxylic acid (TCA) cycle, oxidative stress and energy metabolism. In addition, 4 exogenous compounds from Semen Strychni (3 prototypes and 1 metabolite) were also identified in the present study. Results showed that the alterations of 23 compounds caused by Semen Strychni were significantly reversed after licorice treatment, which indicated that restoring the endogenous metabolic disorder and accelerating the metabolism of the main toxic components might be the possible detoxification mechanisms of licorice. This study may provide an integral understanding for the acute toxicity of Semen Strychni and the detoxification effect of licorice, thereby contributing to the clinical use of Semen Strychni and licorice.
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Affiliation(s)
- Yalan Xiang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Chao Wang
- Department of Pharmacy, Qingdao Municipal Hospital Qingdao 266011 China
| | - Jing Wen
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Min Zhang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Xiaoyu Duan
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Lu Wang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Miao Yan
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Huande Li
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
| | - Pingfei Fang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University Changsha 410011 China +86 18890011747
- Institute of Clinical Pharmacy, Central South University Changsha 410011 China
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Liu F, Han X, Li N, Liu K, Kang W. Aconitum alkaloids induce cardiotoxicity and apoptosis in embryonic zebrafish by influencing the expression of cardiovascular relative genes. Toxicol Lett 2019; 305:10-18. [PMID: 30639578 DOI: 10.1016/j.toxlet.2019.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/27/2018] [Accepted: 01/05/2019] [Indexed: 12/11/2022]
Abstract
Aconitine (AC) and mesaconitine (MA) are major bioactive diterpenoid alkaloids derived from herbal aconitum plants. Emerging evidence indicates that AC plays a pivotal role in the cardiotoxicity for aconite poisoning. However, the cardiotoxicity data of MA, especially those on the difference between AC and MA are quite limited. Zebrafish embryos were used in this study for toxicological screening, and the cardiac morphology and function were observed. Embryos were analyzed by means of high-performance liquid chromatography (HPLC) after exposure and pharmacokinetic behaviors were also investigated. Results showed that 1.5% of the aconitum alkaloids penetrated into the zebrafish embryos. 2.5 μg/L AC and 20 μg/L MA caused a deficient cardiovascular system with yolk sac hemorrhage and early cardiac dysfunctions were observed in 96 h post-fertilization. AC showed greater cardiotoxicity than MA by comparing the EC50 of pericardium edema. Aconitum alkaloids exposure also resulted in a significant decrease in the expression of cardiac genes (Tbx5, Gata4, and Nkx2.5) from an early stage (12-24 hpf), which may partly explained that the death caused by aconitum is most likely to occur within the first 24 h. In addition, a high percentage of apoptotic cells was observed in the brain region, which identified another potential target of the DDA action in zebrafish embryos.
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Affiliation(s)
- Fei Liu
- School of Basic Medical, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China; School of Public Health, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Xu Han
- Institute of Viral Disease, Hebei Center for Disease Control and Prevention, Shijiazhuang, Hebei Province, China
| | - Nan Li
- School of Basic Medical, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Kun Liu
- School of Basic Medical, Hebei University of Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Weijun Kang
- School of Public Health, Hebei Medical University, Shijiazhuang, Hebei Province, China.
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Horzmann KA, Freeman JL. Zebrafish Get Connected: Investigating Neurotransmission Targets and Alterations in Chemical Toxicity. TOXICS 2016; 4:19. [PMID: 28730152 PMCID: PMC5515482 DOI: 10.3390/toxics4030019] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/09/2016] [Indexed: 12/17/2022]
Abstract
Neurotransmission is the basis of neuronal communication and is critical for normal brain development, behavior, learning, and memory. Exposure to drugs and chemicals can alter neurotransmission, often through unknown pathways and mechanisms. The zebrafish (Danio rerio) model system is increasingly being used to study the brain and chemical neurotoxicity. In this review, the major neurotransmitter systems, including glutamate, GABA, dopamine, norepinephrine, serotonin, acetylcholine, histamine, and glutamate are surveyed and pathways of synthesis, transport, metabolism, and action are examined. Differences between human and zebrafish neurochemical pathways are highlighted. We also review techniques for evaluating neurological function, including the measurement of neurotransmitter levels, assessment of gene expression through transcriptomic analysis, and the recording of neurobehavior. Finally examples of chemical toxicity studies evaluating alterations in neurotransmitter systems in the zebrafish model are reviewed.
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Affiliation(s)
| | - Jennifer L. Freeman
- School of Health Sciences, Purdue University, West Lafayette, IN 47907, USA;
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Bault ZA, Peterson SM, Freeman JL. Directional and color preference in adult zebrafish: Implications in behavioral and learning assays in neurotoxicology studies. J Appl Toxicol 2015; 35:1502-10. [PMID: 25993913 DOI: 10.1002/jat.3169] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 04/08/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Zachary A. Bault
- School of Health Sciences; Purdue University; West Lafayette IN USA
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Bailey J, Oliveri A, Levin ED. Zebrafish model systems for developmental neurobehavioral toxicology. ACTA ACUST UNITED AC 2014; 99:14-23. [PMID: 23723169 DOI: 10.1002/bdrc.21027] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Accepted: 03/06/2013] [Indexed: 02/05/2023]
Abstract
Zebrafish offer many advantages that complement classic mammalian models for the study of normal development as well as for the teratogenic effects of exposure to hazardous compounds. The clear chorion and embryo of the zebrafish allow for continuous visualization of the anatomical changes associated with development, which, along with short maturation times and the capability of complex behavior, makes this model particularly useful for measuring changes to the developing nervous system. Moreover, the rich array of developmental, behavioral, and molecular benefits offered by the zebrafish have contributed to an increasing demand for the use of zebrafish in behavioral teratology. Essential for this endeavor has been the development of a battery of tests to evaluate a spectrum of behavior in zebrafish. Measures of sensorimotor plasticity, emotional function, cognition and social interaction have been used to characterize the persisting adverse effects of developmental exposure to a variety of chemicals including therapeutic drugs, drugs of abuse and environmental toxicants. In this review, we present and discuss such tests and data from a range of developmental neurobehavioral toxicology studies using zebrafish as a model. Zebrafish provide a key intermediate model between high throughput in vitro screens and the classic mammalian models as they have the accessibility of in vitro models and the complex functional capabilities of mammalian models.
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Affiliation(s)
- Jordan Bailey
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina 27710, USA
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Lee Y, Kim YH, Yun JS, Lee CJ. Valproic acid decreases the proliferation of telencephalic cells in zebrafish larvae. Neurotoxicol Teratol 2013; 39:91-9. [DOI: 10.1016/j.ntt.2013.07.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 06/28/2013] [Accepted: 07/12/2013] [Indexed: 10/26/2022]
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