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Chen P, Wang J, Zhang S, Wang Y, Sun Y, Bai S, Wu Q, Cheng X, Cao P, Qi X. Total syntheses of Tetrodotoxin and 9-epiTetrodotoxin. Nat Commun 2024; 15:679. [PMID: 38263179 PMCID: PMC10806222 DOI: 10.1038/s41467-024-45037-0] [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: 01/09/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024] Open
Abstract
Tetrodotoxin and congeners are specific voltage-gated sodium channel blockers that exhibit remarkable anesthetic and analgesic effects. Here, we present a scalable asymmetric syntheses of Tetrodotoxin and 9-epiTetrodotoxin from the abundant chemical feedstock furfuryl alcohol. The optically pure cyclohexane skeleton is assembled via a stereoselective Diels-Alder reaction. The dense heteroatom substituents are established sequentially by a series of functional group interconversions on highly oxygenated cyclohexane frameworks, including a chemoselective cyclic anhydride opening, and a decarboxylative hydroxylation. An innovative SmI2-mediated concurrent fragmentation, an oxo-bridge ring opening and ester reduction followed by an Upjohn dihydroxylation deliver the highly oxidized skeleton. Ruthenium-catalyzed oxidative alkyne cleavage and formation of the hemiaminal and orthoester under acidic conditions enable the rapid assembly of Tetrodotoxin, anhydro-Tetrodotoxin, 9-epiTetrodotoxin, and 9-epi lactone-Tetrodotoxin.
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Affiliation(s)
- Peihao Chen
- School of Life Sciences, Peking University, Beijing, 100871, China
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
| | - Jing Wang
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Shuangfeng Zhang
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
| | - Yan Wang
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Yuze Sun
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
| | - Songlin Bai
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Qingcui Wu
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
| | - Xinyu Cheng
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
- National Institute of Biological Sciences, Chinese Academy of Medical Sciences&Peking Union Medical College, Beijing, 100730, China
| | - Peng Cao
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Xiangbing Qi
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China.
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China.
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Flores-Holguín N, Salas-Leiva JS, Núñez-Vázquez EJ, Tovar-Ramírez D, Glossman-Mitnik D. Marine Toxins as Pharmaceutical Treasure Troves: A Focus on Saxitoxin Derivatives from a Computational Point of View. Molecules 2024; 29:275. [PMID: 38202857 PMCID: PMC10780485 DOI: 10.3390/molecules29010275] [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: 12/06/2023] [Revised: 12/30/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024] Open
Abstract
This work highlights the significant potential of marine toxins, particularly saxitoxin (STX) and its derivatives, in the exploration of novel pharmaceuticals. These toxins, produced by aquatic microorganisms and collected by bivalve mollusks and other filter-feeding organisms, offer a vast reservoir of chemical and biological diversity. They interact with sodium channels in physiological processes, affecting various functions in organisms. Exposure to these toxins can lead to symptoms ranging from tingling sensations to respiratory failure and cardiovascular shock, with STX being one of the most potent. The structural diversity of STX derivatives, categorized into carbamate, N-sulfocarbamoyl, decarbamoyl, and deoxydecarbamoyl toxins, offers potential for drug development. The research described in this work aimed to computationally characterize 18 STX derivatives, exploring their reactivity properties within marine sponges using conceptual density functional theory (CDFT) techniques. Additionally, their pharmacokinetic properties, bioavailability, and drug-likeness scores were assessed. The outcomes of this research were the chemical reactivity parameters calculated via CDFT as well as the estimated pharmacokinetic and ADME properties derived using computational tools. While they may not align directly, the integration of these distinct datasets enriches our comprehensive understanding of the compound's properties and potential applications. Thus, this study holds promise for uncovering new pharmaceutical candidates from the considered marine toxins.
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Affiliation(s)
- Norma Flores-Holguín
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
| | - Joan S. Salas-Leiva
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
| | - Erick J. Núñez-Vázquez
- Centro de Investigaciones Biológicas del Noroeste, Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz 23096, BCS, Mexico; (E.J.N.-V.); (D.T.-R.)
| | - Dariel Tovar-Ramírez
- Centro de Investigaciones Biológicas del Noroeste, Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz 23096, BCS, Mexico; (E.J.N.-V.); (D.T.-R.)
| | - Daniel Glossman-Mitnik
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
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Liu Z, Wang Z, Wei Y, Shi J, Shi T, Chen X, Li L. Transcriptomic Profiling of Tetrodotoxin-Induced Neurotoxicity in Human Cerebral Organoids. Mar Drugs 2023; 21:588. [PMID: 37999412 PMCID: PMC10672545 DOI: 10.3390/md21110588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/30/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023] Open
Abstract
Tetrodotoxin (TTX) is an exceedingly toxic non-protein biotoxin that demonstrates remarkable selectivity and affinity for sodium channels on the excitation membrane of nerves. This property allows TTX to effectively obstruct nerve conduction, resulting in nerve paralysis and fatality. Although the mechanistic aspects of its toxicity are well understood, there is a dearth of literature addressing alterations in the neural microenvironment subsequent to TTX poisoning. In this research endeavor, we harnessed human pluripotent induced stem cells to generate cerebral organoids-an innovative model closely mirroring the structural and functional intricacies of the human brain. This model was employed to scrutinize the comprehensive transcriptomic shifts induced by TTX exposure, thereby delving into the neurotoxic properties of TTX and its potential underlying mechanisms. Our findings revealed 455 differentially expressed mRNAs (DEmRNAs), 212 differentially expressed lncRNAs (DElncRNAs), and 18 differentially expressed miRNAs (DEmiRNAs) in the TTX-exposed group when juxtaposed with the control cohort. Through meticulous Gene Ontology (GO) annotation, Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, and protein-protein interaction (PPI) analysis, we ascertained that these differential genes predominantly participate in the regulation of voltage-gated channels and synaptic homeostasis. A comprehensive ceRNA network analysis unveiled that DEmRNAs exert control over the expression of ion channels and neurocytokines, suggesting their potential role in mediating apoptosis.
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Affiliation(s)
- Zhanbiao Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Zhe Wang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Yue Wei
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
| | - Jingjing Shi
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
| | - Tong Shi
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
| | - Xuejun Chen
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
| | - Liqin Li
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China (J.S.)
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Abstract
This review deals with the synthesis of naturally occurring alkaloids containing partially or completely saturated pyrimidine nuclei. The interest in these compounds is associated with their structural diversity, high biological activity and toxicity. The review is divided into four parts, each of which describes a number of synthetic methodologies toward structurally different naturally occurring alkaloids containing saturated cyclic six-membered amidine, guanidine, aminal and urea (thiourea) moieties, respectively. The development of various synthetic strategies for the preparation of these compounds has remarkably increased during the past few decades. This is primarily due to the fact that some of these compounds are isolated only in limited quantities, which makes it practically impossible to study their full structural characteristics and biological activity.
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Katikou P, Gokbulut C, Kosker AR, Campàs M, Ozogul F. An Updated Review of Tetrodotoxin and Its Peculiarities. Mar Drugs 2022; 20:md20010047. [PMID: 35049902 PMCID: PMC8780202 DOI: 10.3390/md20010047] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 12/19/2022] Open
Abstract
Tetrodotoxin (TTX) is a crystalline, weakly basic, colorless organic substance and is one of the most potent marine toxins known. Although TTX was first isolated from pufferfish, it has been found in numerous other marine organisms and a few terrestrial species. Moreover, tetrodotoxication is still an important health problem today, as TTX has no known antidote. TTX poisonings were most commonly reported from Japan, Thailand, and China, but today the risk of TTX poisoning is spreading around the world. Recent studies have shown that TTX-containing fish are being found in other regions of the Pacific and in the Indian Ocean, as well as the Mediterranean Sea. This review aims to summarize pertinent information available to date on the structure, origin, distribution, mechanism of action of TTX and analytical methods used for the detection of TTX, as well as on TTX-containing organisms, symptoms of TTX poisoning, and incidence worldwide.
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Affiliation(s)
- Panagiota Katikou
- Ministry of Rural Development and Food, Directorate of Research, Innovation and Education, Hapsa & Karatasou 1, 54626 Thessaloniki, Greece
- Correspondence: (P.K.); (F.O.)
| | - Cengiz Gokbulut
- Department of Pharmacology, Faculty of Medicine, Balikesir University, Balikesir 10145, Turkey;
| | - Ali Rıza Kosker
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana 01330, Turkey;
| | - Mònica Campàs
- IRTA, Ctra Poble Nou km 5.5, 43540 Sant Carles de la Ràpita, Spain;
| | - Fatih Ozogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana 01330, Turkey;
- Correspondence: (P.K.); (F.O.)
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Voltage-Gated Sodium Channels: A Prominent Target of Marine Toxins. Mar Drugs 2021; 19:md19100562. [PMID: 34677461 PMCID: PMC8537899 DOI: 10.3390/md19100562] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 09/29/2021] [Accepted: 10/02/2021] [Indexed: 12/19/2022] Open
Abstract
Voltage-gated sodium channels (VGSCs) are considered to be one of the most important ion channels given their remarkable physiological role. VGSCs constitute a family of large transmembrane proteins that allow transmission, generation, and propagation of action potentials. This occurs by conducting Na+ ions through the membrane, supporting cell excitability and communication signals in various systems. As a result, a wide range of coordination and physiological functions, from locomotion to cognition, can be accomplished. Drugs that target and alter the molecular mechanism of VGSCs’ function have highly contributed to the discovery and perception of the function and the structure of this channel. Among those drugs are various marine toxins produced by harmful microorganisms or venomous animals. These toxins have played a key role in understanding the mode of action of VGSCs and in mapping their various allosteric binding sites. Furthermore, marine toxins appear to be an emerging source of therapeutic tools that can relieve pain or treat VGSC-related human channelopathies. Several studies documented the effect of marine toxins on VGSCs as well as their pharmaceutical applications, but none of them underlined the principal marine toxins and their effect on VGSCs. Therefore, this review aims to highlight the neurotoxins produced by marine animals such as pufferfish, shellfish, sea anemone, and cone snail that are active on VGSCs and discuss their pharmaceutical values.
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Bucciarelli GM, Lechner M, Fontes A, Kats LB, Eisthen HL, Shaffer HB. From Poison to Promise: The Evolution of Tetrodotoxin and Its Potential as a Therapeutic. Toxins (Basel) 2021; 13:toxins13080517. [PMID: 34437388 PMCID: PMC8402337 DOI: 10.3390/toxins13080517] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 11/16/2022] Open
Abstract
Tetrodotoxin (TTX) is a potent neurotoxin that was first identified in pufferfish but has since been isolated from an array of taxa that host TTX-producing bacteria. However, determining its origin, ecosystem roles, and biomedical applications has challenged researchers for decades. Recognized as a poison and for its lethal effects on humans when ingested, TTX is primarily a powerful sodium channel inhibitor that targets voltage-gated sodium channels, including six of the nine mammalian isoforms. Although lethal doses for humans range from 1.5-2.0 mg TTX (blood level 9 ng/mL), when it is administered at levels far below LD50, TTX exhibits therapeutic properties, especially to treat cancer-related pain, neuropathic pain, and visceral pain. Furthermore, TTX can potentially treat a variety of medical ailments, including heroin and cocaine withdrawal symptoms, spinal cord injuries, brain trauma, and some kinds of tumors. Here, we (i) describe the perplexing evolution and ecology of tetrodotoxin, (ii) review its mechanisms and modes of action, and (iii) offer an overview of the numerous ways it may be applied as a therapeutic. There is much to be explored in these three areas, and we offer ideas for future research that combine evolutionary biology with therapeutics. The TTX system holds great promise as a therapeutic and understanding the origin and chemical ecology of TTX as a poison will only improve its general benefit to humanity.
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Affiliation(s)
- Gary M. Bucciarelli
- Department of Ecology and Evolutionary Biology & UCLA La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, CA 90095, USA; (M.L.); (H.B.S.)
- Correspondence:
| | - Maren Lechner
- Department of Ecology and Evolutionary Biology & UCLA La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, CA 90095, USA; (M.L.); (H.B.S.)
| | - Audrey Fontes
- Natural Science Division, Pepperdine University, Malibu, CA 90263, USA; (A.F.); (L.B.K.)
| | - Lee B. Kats
- Natural Science Division, Pepperdine University, Malibu, CA 90263, USA; (A.F.); (L.B.K.)
| | - Heather L. Eisthen
- Department of Integrative Biology, Michigan State University, East Lansing, MI 48824, USA;
| | - H. Bradley Shaffer
- Department of Ecology and Evolutionary Biology & UCLA La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, CA 90095, USA; (M.L.); (H.B.S.)
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González-Cano R, Ruiz-Cantero MC, Santos-Caballero M, Gómez-Navas C, Tejada MÁ, Nieto FR. Tetrodotoxin, a Potential Drug for Neuropathic and Cancer Pain Relief? Toxins (Basel) 2021; 13:toxins13070483. [PMID: 34357955 PMCID: PMC8310002 DOI: 10.3390/toxins13070483] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 12/20/2022] Open
Abstract
Tetrodotoxin (TTX) is a potent neurotoxin found mainly in puffer fish and other marine and terrestrial animals. TTX blocks voltage-gated sodium channels (VGSCs) which are typically classified as TTX-sensitive or TTX-resistant channels. VGSCs play a key role in pain signaling and some TTX-sensitive VGSCs are highly expressed by adult primary sensory neurons. During pathological pain conditions, such as neuropathic pain, upregulation of some TTX-sensitive VGSCs, including the massive re-expression of the embryonic VGSC subtype NaV1.3 in adult primary sensory neurons, contribute to painful hypersensitization. In addition, people with loss-of-function mutations in the VGSC subtype NaV1.7 present congenital insensitive to pain. TTX displays a prominent analgesic effect in several models of neuropathic pain in rodents. According to this promising preclinical evidence, TTX is currently under clinical development for chemo-therapy-induced neuropathic pain and cancer-related pain. This review focuses primarily on the preclinical and clinical evidence that support a potential analgesic role for TTX in these pain states. In addition, we also analyze the main toxic effects that this neurotoxin produces when it is administered at therapeutic doses, and the therapeutic potential to alleviate neuropathic pain of other natural toxins that selectively block TTX-sensitive VGSCs.
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Affiliation(s)
- Rafael González-Cano
- Department of Pharmacology, and Neurosciences Institute (Biomedical Research Center), University of Granada, 18016 Granada, Spain; (R.G.-C.); (M.C.R.-C.); (M.S.-C.); (C.G.-N.)
- Biosanitary Research Institute ibs.GRANADA, 18012 Granada, Spain
| | - M. Carmen Ruiz-Cantero
- Department of Pharmacology, and Neurosciences Institute (Biomedical Research Center), University of Granada, 18016 Granada, Spain; (R.G.-C.); (M.C.R.-C.); (M.S.-C.); (C.G.-N.)
- Biosanitary Research Institute ibs.GRANADA, 18012 Granada, Spain
| | - Miriam Santos-Caballero
- Department of Pharmacology, and Neurosciences Institute (Biomedical Research Center), University of Granada, 18016 Granada, Spain; (R.G.-C.); (M.C.R.-C.); (M.S.-C.); (C.G.-N.)
- Biosanitary Research Institute ibs.GRANADA, 18012 Granada, Spain
| | - Carlos Gómez-Navas
- Department of Pharmacology, and Neurosciences Institute (Biomedical Research Center), University of Granada, 18016 Granada, Spain; (R.G.-C.); (M.C.R.-C.); (M.S.-C.); (C.G.-N.)
| | | | - Francisco R. Nieto
- Department of Pharmacology, and Neurosciences Institute (Biomedical Research Center), University of Granada, 18016 Granada, Spain; (R.G.-C.); (M.C.R.-C.); (M.S.-C.); (C.G.-N.)
- Biosanitary Research Institute ibs.GRANADA, 18012 Granada, Spain
- Correspondence: ; Tel.: +34-958-242-056
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Becker JE, Price JL, Leonard D, Suris A, Kandil E, Shaw M, Kroener S, Brown ES, Adinoff B. The Efficacy of Lidocaine in Disrupting Cocaine Cue-Induced Memory Reconsolidation. Drug Alcohol Depend 2020; 212:108062. [PMID: 32480252 DOI: 10.1016/j.drugalcdep.2020.108062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 04/06/2020] [Accepted: 05/04/2020] [Indexed: 01/10/2023]
Abstract
RATIONAL Cue-induced craving memories, linked to drug-seeking behaviors, require key molecular processes for memory reconsolidation. Lidocaine, a sodium channel blocker, inhibits NMDA receptor activation and suppresses nitric oxide and ERK production. These processes are required for memory re-consolidation; inhibiting them may reduce cue-related craving memories in cocaine dependent subjects. OBJECTIVES To assess the efficacy of lidocaine in decreasing cue-induced cocaine craving and cocaine use. METHODS Treatment-seeking cocaine-dependent participants (n = 33, 25 men) were recruited. Personalized craving and relaxation scripts were developed. Participants were then randomly assigned in a double-blind design to either receive intravenous lidocaine immediately following a cocaine craving script (lidocaine/craving), saline following a craving script (saline/craving), or lidocaine following a relaxation script (lidocaine/relax). One week following the infusion, cue-induced craving was assessed in the same paradigm without an infusion. Cocaine use and craving were assessed for 4 weeks following infusion. RESULTS The administration of lidocaine during craving induction (lidocaine/craving) did not decrease cue-induced craving during craving reactivation one week later or craving and cocaine use over the 4-week follow-up period compared to the saline/craving group. There were no significant differences in craving and cocaine use between the lidocaine/relax and saline/craving groups. CONCLUSION Lidocaine administered following craving induction did not decrease subsequent cue-induced craving or cocaine use. Blocking the reconsolidation of craving-related memories with pharmacological agents remains an important area of investigation.
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Affiliation(s)
- Josh E Becker
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX USA; School of Behavior and Brain Sciences, UT Dallas, Dallas, TX USA
| | - Julianne L Price
- Department of Psychiatry, University of Florida, Gainesville, FL USA
| | - David Leonard
- David Leonard Statistical Consulting, Wichita Falls, TX USA
| | - Alina Suris
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX USA; VA North Texas Health Care System, Dallas, TX USA
| | - Enas Kandil
- Department of Psychiatry, University of Colorado School of Medicine, Aurora, CO USA; Department of Anesthesiology & Pain Management, UT Southwestern Medical Center, Dallas, TX USA; School of Behavior and Brain Sciences, UT Dallas, Dallas, TX USA
| | - Meredith Shaw
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX USA; VA North Texas Health Care System, Dallas, TX USA
| | - Sven Kroener
- School of Behavior and Brain Sciences, UT Dallas, Dallas, TX USA
| | - E Sherwood Brown
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX USA
| | - Bryon Adinoff
- Department of Psychiatry, University of Colorado School of Medicine, Aurora, CO USA
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Makarova M, Rycek L, Hajicek J, Baidilov D, Hudlicky T. Tetrodotoxin: Geschichte, Biologie und Synthese. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mariia Makarova
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Lukas Rycek
- Department of Organic ChemistryFaculty of ScienceCharles University Hlavova 8 12843 Prague Czech Republic
| | - Josef Hajicek
- Department of Organic ChemistryFaculty of ScienceCharles University Hlavova 8 12843 Prague Czech Republic
| | - Daler Baidilov
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Tomas Hudlicky
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
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11
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Kleykamp BA, De Santis M, Dworkin RH, Huhn AS, Kampman KM, Montoya ID, Preston KL, Ramey T, Smith SM, Turk DC, Walsh R, Weiss RD, Strain EC. Craving and opioid use disorder: A scoping review. Drug Alcohol Depend 2019; 205:107639. [PMID: 31683241 DOI: 10.1016/j.drugalcdep.2019.107639] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/06/2019] [Accepted: 08/30/2019] [Indexed: 01/08/2023]
Abstract
INTRODUCTION The subjective experience of drug craving is a prominent and common clinical phenomenon for many individuals diagnosed with opioid use disorder (OUD), and could be a valuable clinical endpoint in medication development studies. The purpose of this scoping review is to provide an overview and critical analysis of opioid craving assessments located in the published literature examining OUD. METHOD Studies were identified through a search of PubMed, Embase, and PsychInfo databases and included for review if opioid craving was the focus and participants were diagnosed with or in treatment for OUD. RESULTS Fifteen opioid craving assessment instruments were identified across the 87 studies included for review. The most common were the Visual Analog Scale (VAS, 41 studies), Desires for Drug Questionnaire (DDQ, 12 studies), Heroin Craving Questionnaire (HCQ, 10 studies), and Obsessive-Compulsive Drug Use Scale (OCDUS, 10 studies). Craving assessments varied considerably in their format, content, time frame, and underlying subscales, and only 6 of 15 had been psychometrically evaluated. DISCUSSION This review identified a variety of opioid craving assessments, but few had been evaluated for their psychometric properties making it difficult to ascertain whether craving is being assessed optimally in studies of OUD. Thus, the development of a reliable and valid opioid craving assessment would be worthwhile and could be guided by recently published Food and Drug Administration Clinical Outcome Assessment (COA) guidelines. Importantly, a COA focused on opioid craving could be a valuable addition to research studies designed to evaluate novel treatments for OUD.
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Affiliation(s)
- Bethea A Kleykamp
- Department of Anesthesiology, School of Medicine and Dentistry, University of Rochester, USA.
| | | | - Robert H Dworkin
- Department of Anesthesiology, School of Medicine and Dentistry, University of Rochester, USA
| | - Andrew S Huhn
- Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Kyle M Kampman
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Kenzie L Preston
- Clinical Pharmacology and Therapeutics Research Branch, National Institute on Drug Abuse, Baltimore, MD, USA
| | - Tanya Ramey
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - Shannon M Smith
- Department of Anesthesiology, School of Medicine and Dentistry, University of Rochester, USA
| | - Dennis C Turk
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
| | - Robert Walsh
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - Roger D Weiss
- McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - Eric C Strain
- Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
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12
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Makarova M, Rycek L, Hajicek J, Baidilov D, Hudlicky T. Tetrodotoxin: History, Biology, and Synthesis. Angew Chem Int Ed Engl 2019; 58:18338-18387. [DOI: 10.1002/anie.201901564] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Mariia Makarova
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Lukas Rycek
- Department of Organic ChemistryFaculty of ScienceCharles University Hlavova 8 12843 Prague Czech Republic
| | - Josef Hajicek
- Department of Organic ChemistryFaculty of ScienceCharles University Hlavova 8 12843 Prague Czech Republic
| | - Daler Baidilov
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Tomas Hudlicky
- Chemistry Department and Centre for BiotechnologyBrock University 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
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13
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Ayvazyan NM, O'Leary VB, Dolly JO, Ovsepian SV. Neurobiology and therapeutic utility of neurotoxins targeting postsynaptic mechanisms of neuromuscular transmission. Drug Discov Today 2019; 24:1968-1984. [PMID: 31247153 DOI: 10.1016/j.drudis.2019.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 05/15/2019] [Accepted: 06/17/2019] [Indexed: 11/28/2022]
Abstract
The neuromuscular junction (NMJ) is the principal site for the translation of motor neurochemical signals to muscle activity. Therefore, the release and sensing machinery of acetylcholine (ACh) along with muscle contraction are two of the main targets of natural toxins and pathogens, causing paralysis. Given pharmacology and medical advances, the active ingredients of toxins that target postsynaptic mechanisms have become of major interest, showing promise as drug leads. Herein, we review key facets of prevalent toxins modulating the mechanisms of ACh sensing and generation of the postsynaptic response, with muscle contraction. We consider the correlation between their outstanding selectivity and potency plus effects on motor function, and discuss emerging data advocating their usage for the development of therapies alleviating neuromuscular dysfunction.
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Affiliation(s)
- Naira M Ayvazyan
- Orbeli Institute of Physiology, National Academy of Sciences of the Republic of Armenia, Yerevan, Armenia.
| | - Valerie B O'Leary
- Department of Medical Genetics, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Praha 10, Czech Republic
| | - J Oliver Dolly
- International Centre for Neurotherapeutics, Dublin City University, Dublin, Ireland
| | - Saak V Ovsepian
- International Centre for Neurotherapeutics, Dublin City University, Dublin, Ireland; The National Institute of Mental Health, Topolová 748, Klecany, Czech Republic; Department of Psychiatry and Medical Psychology, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Praha 10, Czech Republic.
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14
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Zhang X, Han C, Chen S, Li L, Zong J, Zeng J, Mei G. Response Surface Methodology for the Optimization of Ultrasound-Assisted Extraction of Tetrodotoxin from the Liver of Takifugu pseudommus. Toxins (Basel) 2018; 10:toxins10120529. [PMID: 30544721 PMCID: PMC6315837 DOI: 10.3390/toxins10120529] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/27/2018] [Accepted: 12/07/2018] [Indexed: 01/12/2023] Open
Abstract
Tetrodotoxin (TTX) is a marine biotoxin that has high scientific value. However, the lack of efficient TTX extraction and preparation methods has led to a scarcity of TTX samples for clinical application. In this study, TTX from the liver of Takifugu pseudommus was ultrasound-assisted extracted with acidified organic solvents. The extraction process was analyzed and optimized by single factor method and response surface methodology (RSM). The optimal extraction conditions predicted by a response surface model were as follows: liquid:material ratio, 2.8:1; extraction temperature, 60 °C; extraction time, 23.3 min. Under these conditions, the extraction of TTX had a yield of 89.65%, and the results were further verified by experimental extraction, and analyzed by ultra performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS). It was found that the extracts of T. pseudommus liver contained TTX and its four analogues at certain proportions (TTX: 10.4%; 5,6,11-trideoxyTTX: 83.3%; 5,11-dideoxyTTX:2.4%; 4,9-anhydro TTX:2.6%; 5-deoxyTTX:1.3%). This study demonstrates a stable and efficient extraction process of TTX from pufferfish liver, which can be helpful for further research and analysis, as well as the utilization of TTX from pufferfish.
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Affiliation(s)
- Xiaojun Zhang
- Laboratory of Aquatic Product Processing and Quality Safety, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China.
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Chengcheng Han
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Si Chen
- Laboratory of Aquatic Product Processing and Quality Safety, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China.
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Le Li
- Quality and Standard Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, China.
| | - Jingjing Zong
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Junjie Zeng
- Laboratory of Aquatic Product Processing and Quality Safety, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China.
| | - Guangming Mei
- Laboratory of Aquatic Product Processing and Quality Safety, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China.
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15
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Addressing the Issue of Tetrodotoxin Targeting. Mar Drugs 2018; 16:md16100352. [PMID: 30261623 PMCID: PMC6212850 DOI: 10.3390/md16100352] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 12/27/2022] Open
Abstract
This review is devoted to the medical application of tetrodotoxin (TTX), a potent non-protein specific blocker of voltage-gated sodium (NaV) channels. The selectivity of action, lack of affinity with the heart muscle NaV channels, and the inability to penetrate the blood–brain barrier make this toxin an attractive candidate for anesthetic and analgesic drug design. The efficacy of TTX was shown in neuropathic, acute and inflammatory pain models. The main emphasis of the review is on studies focused on the improvement of TTX efficacy and safety in conjunction with additional substances and drug delivery systems. A significant improvement in the effectiveness of the toxin was demonstrated when used in tandem with vasoconstrictors, local anesthetics and chemical permeation enhancers, with the best results obtained with the encapsulation of TTX in microparticles and liposomes conjugated to gold nanorods.
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16
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Tetrodotoxin, a Candidate Drug for Nav1.1-Induced Mechanical Pain? Mar Drugs 2018; 16:md16020072. [PMID: 29470418 PMCID: PMC5852500 DOI: 10.3390/md16020072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/09/2018] [Accepted: 02/20/2018] [Indexed: 12/28/2022] Open
Abstract
Tetrodotoxin (TTX), the mode of action of which has been known since the 1960s, is widely used in pharmacology as a specific inhibitor of voltage-gated sodium channels (Nav channels). This toxin has contributed to the characterization of the allosteric model of the Nav channel, and to discriminating TTX-sensitive and TTX-resistant subtypes. In addition to its role as a pharmacological tool, TTX is now considered a therapeutic molecule, and its development should lead to its use in certain pathologies involving Nav channels, particularly in the field of pain. Specifically, the blockade of Nav channels expressed in nociceptive fibres is one strategy for alleviating pain and its deleterious consequences on health. Recent work has identified, in addition to the Nav1.7, 1.8 and 1.9 channels, the Nav1.1 subtype on dorsal root ganglion (DRG) neurons as a crucial player in mechanical and non-thermal pain. The sensitivity of Nav1.1 to TTX could be exploited at the therapeutic level, especially in chronic pain conditions.
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17
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Durán-Riveroll LM, Cembella AD. Guanidinium Toxins and Their Interactions with Voltage-Gated Sodium Ion Channels. Mar Drugs 2017; 15:E303. [PMID: 29027912 PMCID: PMC5666411 DOI: 10.3390/md15100303] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/14/2017] [Accepted: 09/27/2017] [Indexed: 12/19/2022] Open
Abstract
Guanidinium toxins, such as saxitoxin (STX), tetrodotoxin (TTX) and their analogs, are naturally occurring alkaloids with divergent evolutionary origins and biogeographical distribution, but which share the common chemical feature of guanidinium moieties. These guanidinium groups confer high biological activity with high affinity and ion flux blockage capacity for voltage-gated sodium channels (NaV). Members of the STX group, known collectively as paralytic shellfish toxins (PSTs), are produced among three genera of marine dinoflagellates and about a dozen genera of primarily freshwater or brackish water cyanobacteria. In contrast, toxins of the TTX group occur mainly in macrozoa, particularly among puffer fish, several species of marine invertebrates and a few terrestrial amphibians. In the case of TTX and analogs, most evidence suggests that symbiotic bacteria are the origin of the toxins, although endogenous biosynthesis independent from bacteria has not been excluded. The evolutionary origin of the biosynthetic genes for STX and analogs in dinoflagellates and cyanobacteria remains elusive. These highly potent molecules have been the subject of intensive research since the latter half of the past century; first to study the mode of action of their toxigenicity, and later as tools to characterize the role and structure of NaV channels, and finally as therapeutics. Their pharmacological activities have provided encouragement for their use as therapeutants for ion channel-related pathologies, such as pain control. The functional role in aquatic and terrestrial ecosystems for both groups of toxins is unproven, although plausible mechanisms of ion channel regulation and chemical defense are often invoked. Molecular approaches and the development of improved detection methods will yield deeper understanding of their physiological and ecological roles. This knowledge will facilitate their further biotechnological exploitation and point the way towards development of pharmaceuticals and therapeutic applications.
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Affiliation(s)
- Lorena M Durán-Riveroll
- CONACYT-Instituto de Ciencias del Mary Limnología, Universidad Nacional Autónoma de México, Mexico 04510, Mexico.
| | - Allan D Cembella
- Alfred-Wegener-Institut, Helmholtz Zentrum für Polar-und Meeresforschung, 27570 Bremerhaven, Germany.
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18
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Hong B, Chen H, Han J, Xie Q, He J, Bai K, Dong Y, Yi R. A Study of 11-[³H]-Tetrodotoxin Absorption, Distribution, Metabolism and Excretion (ADME) in Adult Sprague-Dawley Rats. Mar Drugs 2017; 15:E159. [PMID: 28574462 PMCID: PMC5484109 DOI: 10.3390/md15060159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 05/19/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022] Open
Abstract
Tetrodotoxin (TTX) is a powerful sodium channel blocker that in low doses can safely relieve severe pain. Studying the absorption, distribution, metabolism and excretion (ADME) of TTX is challenging given the extremely low lethal dose. We conducted radiolabeled ADME studies in Sprague-Dawley rats. After a single dose of 6 μg/(16 μCi/kg) 11-[³H]TTX, pharmacokinetics of plasma total radioactivity were similar in male and female rats. Maximum radioactivity (5.56 ng Eq./mL) was reached in 10 min. [³H]TTX was below detection in plasma after 24 h. The area under the curve from 0 to 8 h was 5.89 h·ng Eq./mL; mean residence time was 1.62 h and t½ was 2.31 h. Bile secretion accounted for 0.43% and approximately 51% of the dose was recovered in the urine, the predominant route of elimination. Approximately 69% was recovered, suggesting that hydrogen tritium exchange in rats produced tritiated water excreted in breath and saliva. Average total radioactivity in the stomach, lungs, kidney and intestines was higher than plasma concentrations. Metabolite analysis of plasma, urine and feces samples demonstrated oxidized TTX, the only identified metabolite. In conclusion, TTX was rapidly absorbed and excreted in rats, a standard preclinical model used to guide the design of clinical trials.
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Affiliation(s)
- Bihong Hong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Hui Chen
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jiacai Han
- Department of Inspection and Quarantine of Goods, Pingtan Entry-Exit Inspection & Quarantine Bureau of P.R.C, Pingtan 350400, China.
| | - Quanling Xie
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jianlin He
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Kaikai Bai
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Yanming Dong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
| | - Ruizao Yi
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
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19
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The Influence of Tetrodotoxin (TTX) on the Distribution and Chemical Coding of Caudal Mesenteric Ganglion (CaMG) Neurons Supplying the Porcine Urinary Bladder. Mar Drugs 2017; 15:md15040101. [PMID: 28358321 PMCID: PMC5408247 DOI: 10.3390/md15040101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/23/2017] [Accepted: 03/27/2017] [Indexed: 01/25/2023] Open
Abstract
The treatment of micturition disorders creates a serious problem for urologists. Recently, new therapeutic agents, such as neurotoxins, are being considered for the therapy of urological patients. The present study investigated the chemical coding of caudal mesenteric ganglion (CaMG) neurons supplying the porcine urinary bladder after intravesical instillation of tetrodotoxin (TTX). The CaMG neurons were visualized with retrograde tracer Fast blue (FB) and their chemical profile was disclosed with double-labeling immunohistochemistry using antibodies against tyrosine hydroxylase (TH), neuropeptide Y (NPY), vasoactive intestinal polypeptide (VIP), somatostatin (SOM), calbindin (CB), galanin (GAL) and neuronal nitric oxide synthase (nNOS). It was found that in both the control (n = 6) and TTX-treated pigs (n = 6), the vast majority (92.6% ± 3.4% and 88.8% ± 2%, respectively) of FB-positive (FB+) nerve cells were TH+. TTX instillation caused a decrease in the number of FB+/TH+ neurons immunopositive to NPY (88.9% ± 5.3% in the control animals vs. 10.6% ± 5.3% in TTX-treated pigs) or VIP (1.7% ± 0.6% vs. 0%), and an increase in the number of FB+/TH+ neurons immunoreactive to SOM (8.8% ± 1.6% vs. 39% ± 12.8%), CB (1.8% ± 0.7% vs. 12.6% ± 2.7%), GAL (1.7% ± 0.8% vs. 10.9% ± 2.6%) or nNOS (0% vs. 1.1% ± 0.3%). The present study is the first to suggest that TTX modifies the chemical coding of CaMG neurons supplying the porcine urinary bladder.
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20
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Santamaria CM, Woodruff A, Yang R, Kohane DS. Drug delivery systems for prolonged duration local anesthesia. MATERIALS TODAY (KIDLINGTON, ENGLAND) 2017; 20:22-31. [PMID: 28970739 PMCID: PMC5621744 DOI: 10.1016/j.mattod.2016.11.019] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Numerous drug delivery systems have been applied to the problem of providing prolonged duration local anesthesia (PDLA). Here we review the rationale for PDLA, the desirable features for and important attributes of such systems, and specific examples that have been developed.
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Affiliation(s)
- Claudia M Santamaria
- Laboratory for Biomaterials and Drug Delivery, Division of Critical Care Medicine, Department of Anesthesiology, Boston Children's Hospital, Boston, Massachusetts, United States
| | - Alan Woodruff
- Laboratory for Biomaterials and Drug Delivery, Division of Critical Care Medicine, Department of Anesthesiology, Boston Children's Hospital, Boston, Massachusetts, United States
| | - Rong Yang
- Laboratory for Biomaterials and Drug Delivery, Division of Critical Care Medicine, Department of Anesthesiology, Boston Children's Hospital, Boston, Massachusetts, United States
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, Division of Critical Care Medicine, Department of Anesthesiology, Boston Children's Hospital, Boston, Massachusetts, United States
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21
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Alvarez P, Levine JD. Antihyperalgesic effect of tetrodotoxin in rat models of persistent muscle pain. Neuroscience 2015; 311:499-507. [PMID: 26548414 DOI: 10.1016/j.neuroscience.2015.10.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/26/2015] [Accepted: 10/30/2015] [Indexed: 11/29/2022]
Abstract
Persistent muscle pain is a common and disabling symptom for which available treatments have limited efficacy. Since tetrodotoxin (TTX) displays a marked antinociceptive effect in models of persistent cutaneous pain, we tested its local antinociceptive effect in rat models of muscle pain induced by inflammation, ergonomic injury and chemotherapy-induced neuropathy. While local injection of TTX (0.03-1 μg) into the gastrocnemius muscle did not affect the mechanical nociceptive threshold in naïve rats, exposure to the inflammogen carrageenan produced a marked muscle mechanical hyperalgesia, which was dose-dependently inhibited by TTX. This antihyperalgesic effect was still significant at 24h. TTX also displayed a robust antinociceptive effect on eccentric exercise-induced mechanical hyperalgesia in the gastrocnemius muscle, a model of ergonomic pain. Finally, TTX produced a small but significant inhibition of neuropathic muscle pain induced by systemic administration of the cancer chemotherapeutic agent oxaliplatin. These results indicate that TTX-sensitive sodium currents in nociceptors play a central role in diverse states of skeletal muscle nociceptive sensitization, supporting the suggestion that therapeutic interventions based on TTX may prove useful in the treatment of muscle pain.
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Affiliation(s)
- P Alvarez
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA, USA
| | - J D Levine
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA, USA; Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
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22
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Tetrodotoxin, an Extremely Potent Marine Neurotoxin: Distribution, Toxicity, Origin and Therapeutical Uses. Mar Drugs 2015; 13:6384-406. [PMID: 26492253 PMCID: PMC4626696 DOI: 10.3390/md13106384] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 09/28/2015] [Accepted: 10/04/2015] [Indexed: 02/07/2023] Open
Abstract
Tetrodotoxin (TTX) is a potent neurotoxin responsible for many human intoxications and fatalities each year. The origin of TTX is unknown, but in the pufferfish, it seems to be produced by endosymbiotic bacteria that often seem to be passed down the food chain. The ingestion of contaminated pufferfish, considered the most delicious fish in Japan, is the usual route of toxicity. This neurotoxin, reported as a threat to human health in Asian countries, has spread to the Pacific and Mediterranean, due to the increase of temperature waters worldwide. TTX, for which there is no known antidote, inhibits sodium channel producing heart failure in many cases and consequently death. In Japan, a regulatory limit of 2 mg eq TTX/kg was established, although the restaurant preparation of “fugu” is strictly controlled by law and only chefs qualified are allowed to prepare the fish. Due to its paralysis effect, this neurotoxin could be used in the medical field as an analgesic to treat some cancer pains.
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23
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The voltage-gated sodium channel: a major target of marine neurotoxins. Toxicon 2014; 91:84-95. [PMID: 25305552 DOI: 10.1016/j.toxicon.2014.09.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/18/2014] [Accepted: 09/30/2014] [Indexed: 12/16/2022]
Abstract
Voltage-gated sodium channels (Nav) are key components for nerve excitability. They initiate and propagate the action potential in excitable cells, throughout the central and peripheral nervous system, thus enabling a variety of physiological functions to be achieved. The rising phase of the action potential is driven by the opening of Nav channels which activate rapidly and carry Na(+) ions in the intracellular medium, and ends with the Na(+) current inactivation. The biophysical properties of these channels have been elucidated, through the use of pharmacological agents that disrupt the molecular mechanism of the channel functioning. Among them, marine toxins produced by venomous animals or microorganisms have been crucial to map the different allosteric binding sites of the channels, understand their mode of action and represent an emerging source of therapeutic agents to alleviate or cure Na(+) channels-linked human diseases. In this article, we review recent discoveries on the molecular and biophysical properties of the Na(+) channel as a target for marine neurotoxins, and present the ongoing developments of pharmacological agents as therapeutic tools.
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Bane V, Lehane M, Dikshit M, O'Riordan A, Furey A. Tetrodotoxin: chemistry, toxicity, source, distribution and detection. Toxins (Basel) 2014; 6:693-755. [PMID: 24566728 PMCID: PMC3942760 DOI: 10.3390/toxins6020693] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 01/24/2014] [Accepted: 01/26/2014] [Indexed: 11/16/2022] Open
Abstract
Tetrodotoxin (TTX) is a naturally occurring toxin that has been responsible for human intoxications and fatalities. Its usual route of toxicity is via the ingestion of contaminated puffer fish which are a culinary delicacy, especially in Japan. TTX was believed to be confined to regions of South East Asia, but recent studies have demonstrated that the toxin has spread to regions in the Pacific and the Mediterranean. There is no known antidote to TTX which is a powerful sodium channel inhibitor. This review aims to collect pertinent information available to date on TTX and its analogues with a special emphasis on the structure, aetiology, distribution, effects and the analytical methods employed for its detection.
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Affiliation(s)
- Vaishali Bane
- Mass Spectrometry Research Centre (MSRC) and PROTEOBIO Research Groups, Department of Chemistry, Cork Institute of Technology, Rossa Avenue, Bishopstown, Cork, Ireland.
| | - Mary Lehane
- Mass Spectrometry Research Centre (MSRC) and PROTEOBIO Research Groups, Department of Chemistry, Cork Institute of Technology, Rossa Avenue, Bishopstown, Cork, Ireland.
| | | | - Alan O'Riordan
- Nanotechnology Group, Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland.
| | - Ambrose Furey
- Mass Spectrometry Research Centre (MSRC) and PROTEOBIO Research Groups, Department of Chemistry, Cork Institute of Technology, Rossa Avenue, Bishopstown, Cork, Ireland.
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25
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Burliński PJ, Burlińska AM, Gonkowski S, Całka J. Resiniferatoxin and tetrodotoxin induced NPY and TH immunoreactivity changes within the paracervical ganglion neurons supplying the urinary bladder. J Mol Neurosci 2012; 49:62-7. [PMID: 23054585 PMCID: PMC3532721 DOI: 10.1007/s12031-012-9889-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 09/12/2012] [Indexed: 12/21/2022]
Abstract
Both resiniferatoxin (RTX) and tetrodotoxin (TTX) have been reported to be effective in several urinary bladder dysfunction clinical trials. The aim of this study was to establish the effect of intravesical administration of RTX and TTX on neuropeptides Y (NPY) and tyrosine hydroxylase (TH) relationship in the paracervical ganglion (PCG) neurons supplying the urinary bladder in the pig. TH is an enzyme responsible for catalyzing the conversion of the amino acid L-tyrosine to dihydroxyphenylalanine (DOPA) and is used as a marker of catecholaminergic neurons. NPY augments the vasoconstrictor effects of noradrenergic neurons, and is involved in pathophysiological processes as a neuromodulator. To identify the PCG neurons supplying urinary bladder Fast Blue (FB) was injected into the bladder wall prior to intravesical RTX or TTX administration. Consequent application of immunocytochemical methods revealed that in control group 64.08 % of FB-positive PCG neurons contain NPY and 4.25 % TH. Intravesical infusion of RTX resulted upregulation of the NPY-IR neurons to 82.97 % and TH-IR to 43.78 %. Also administration of TTX induced further increase number of TH-IR neurons to 77.49 % but induced decrease number of NPY-IR neurons to 57.45 %. Both neurotoxins affect chemical coding of the PCG neural somata supplying urinary bladder, but the effects of their action are different. This results shed light on possible involvement of RTX and TTX on curing tissue, and potentially could help us to broaden our neurourological armamentarium.
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26
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Burliński P, Czujkowska A, Arciszewski M, Całka J. Upregulation of LENK and VIP in paracervical ganglion neurons supplying the urinary bladder of tetrodotoxin- and resiniferatoxin-treated female pigs. Acta Vet Hung 2012; 60:383-93. [PMID: 22903083 DOI: 10.1556/avet.2012.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Both resiniferatoxin (RTX) and tetrodotoxin (TTX) have been reported to be effective in several clinical trials aiming to cure urinary bladder dysfunction. The goal of this experiment was to study the effect of intravesical administration of RTX and TTX on the chemical coding of paracervical ganglion (PCG) neurons that supply the urinary bladder in pigs. The vasoactive intestinal peptide (VIP) and the opioid family member Leu5-enkephalin (LENK) are both known for their regulatory effects in the function of the porcine genitourinary tract. The PCG neurons innervating the urinary bladder were identified by application of the retrograde tracer Fast Blue (FB), injected into the bladder wall prior to intravesical RTX or TTX administration. Immunocytochemical detection of LENK and VIP expression in the FB-labelled perikarya revealed that in the control group 25.15% of the FB-positive PCG neurons contained LENK, and 9.22% of them expressed VIP. Intravesical infusion of RTX resulted in an increase in the number of LENKIR neurons to 48.19% and VIP-IR perikarya to 11.25%. Optional treatment with TTX induced increase of LENK-IR neurons up to 81.67% and VIP-IR population to 16.46% of the FB-positive PCG cells. The present results show that both neurotoxins affect the chemical coding of PCG nervous cells supplying the porcine urinary bladder and that they stimulate both LENK and VIP expression. Furthermore, the results indicate a possible involvement of LENK and VIP neurons in the mechanisms of action of RTX and TTX in the therapy of overactive bladder disorder.
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Affiliation(s)
- Piotr Burliński
- 1 University of Warmia and Mazury Department of Clinical Physiology, Faculty of Veterinary Medicine Oczapowskiego 13 10-719 Olsztyn Poland
| | - Agnieszka Czujkowska
- 2 University of Life Sciences Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine Lublin Poland
| | - Marcin Arciszewski
- 2 University of Life Sciences Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine Lublin Poland
| | - Jarosław Całka
- 1 University of Warmia and Mazury Department of Clinical Physiology, Faculty of Veterinary Medicine Oczapowskiego 13 10-719 Olsztyn Poland
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Burliński P, Gonkowski S, Całka J. Tetrodotoxin- and resiniferatoxin-induced changes in paracervical ganglion ChAT- and nNOS-IR neurons supplying the urinary bladder in female pigs. Acta Vet Hung 2011; 59:455-63. [PMID: 22079707 DOI: 10.1556/avet.2011.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aim of the present study was to establish the effect of intravesical administration of resiniferatoxin (RTX) and tetrodotoxin (TTX) on the chemical coding of paracervical ganglion (PCG) neurons supplying the urinary bladder in the pig. In order to identify the PCG neurons innervating the bladder, retrograde tracer Fast Blue was injected into the bladder wall prior to intravesical RTX or TTX administration. Consequent application of immunocytochemical methods revealed that in the control group 76.82% of Fast Blue positive PCG neurons contain nitric oxide synthetase (nNOS), and 66.92% contain acetylcholine transferase (ChAT). Intravesical infusion of RTX resulted in a reduction of the nNOS-IR neurons to 57.74% and ChAT-IR to 57.05%. Alternative administration of TTX induced an increase of nNOS-IR neurons up to 79.29% and a reduction of the ChAT-IR population down to 3.73% of the Fast Blue positive PCG cells. Our data show that both neurotoxins affect the chemical coding of PCG cells supplying the porcine urinary bladder, but the effects of their action are different. Moreover, these results shed light on the possible involvement of NO-ergic and cholinergic neurons in the mechanisms of therapeutic action exerted by RTX and TTX in curing the overactive bladder disorder.
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Affiliation(s)
- Piotr Burliński
- 1 University of Warmia and Mazury in Olsztyn Department of Clinical Physiology, Faculty of Veterinary Medicine ul. Oczapowskiego 13/024 10-957 Olsztyn-Kortowo Poland
| | - Sławomir Gonkowski
- 1 University of Warmia and Mazury in Olsztyn Department of Clinical Physiology, Faculty of Veterinary Medicine ul. Oczapowskiego 13/024 10-957 Olsztyn-Kortowo Poland
| | - Jarosław Całka
- 1 University of Warmia and Mazury in Olsztyn Department of Clinical Physiology, Faculty of Veterinary Medicine ul. Oczapowskiego 13/024 10-957 Olsztyn-Kortowo Poland
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Song H, li J, Lu CL, Kang L, Xie L, Zhang YY, Zhou XB, Zhong S. Tetrodotoxin alleviates acute heroin withdrawal syndrome: A multicentre, randomized, double-blind, placebo-controlled study. Clin Exp Pharmacol Physiol 2011; 38:510-4. [DOI: 10.1111/j.1440-1681.2011.05539.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen XW, Liu HX, Jin YB, Li SF, Bi X, Chung S, Zhang SS, Jiang YY. Separation, identification and quantification of tetrodotoxin and its analogs by LC-MS without calibration of individual analogs. Toxicon 2011; 57:938-43. [PMID: 21419154 DOI: 10.1016/j.toxicon.2011.03.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 02/15/2011] [Accepted: 03/08/2011] [Indexed: 10/18/2022]
Abstract
We report here a simple and rapid method of separation, identification and quantification of tetrodotoxin (TTX) and its analogs in partially purified extract by LC-MS. Except for the main component calibration of individual components was not necessary. TTX and four of its analogs in the puffer fish extract were identified and quantified. The limits of detection and quantification, the linear range and accuracy of the protocol were validated.
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Affiliation(s)
- Xiao-Wu Chen
- Key Laboratory of Chemical Biology of Guangdong Province, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518057, PR China
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Fareed A, Vayalapalli S, Casarella J, Amar R, Drexler K. Heroin anticraving medications: a systematic review. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2010; 36:332-41. [PMID: 20955107 DOI: 10.3109/00952990.2010.505991] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Heroin craving is a trigger for relapse and dropping out of treatment. Methadone has been the standard medication for the management of heroin craving. OBJECTIVES We explored the medication options other than methadone which may have heroin anticraving properties. METHODS To be selected for the review, articles had to include outcome measures of the effect of the studied medication on subjective and/or objective opiate craving and be of the following two types: (1) randomized, controlled, and/or double-blind clinical trials (RCTs) examining the relationship between the studied medication and heroin craving; (2) nonrandomized and observational studies (NRSs) examining the relationship between the studied medication and heroin craving. Thirty-three articles were initially included in the review. Twenty-one were excluded because they did not meet the inclusion criteria. We present the results of 12 articles that met all the inclusion criteria. RESULTS Some new medications have been under investigation and seem promising for the treatment of opiate craving. Buprenorphine is the second most studied medication after methadone for its effect on opiate craving. At doses above 8 mg daily, it seems very promising and practical for managing opiate craving in patients receiving long-term opioid maintenance treatment. CONCLUSIONS AND SCIENTIFIC SIGNIFICANCE In doses higher than 8 mg daily, buprenorphine is an appropriate treatment for opiate craving. More research with rigorous methodology is needed to study the effect of buprenorphine on heroin craving. Also more studies are needed to directly compare buprenorphine and methadone with regard to their effects on heroin craving.
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Affiliation(s)
- Ayman Fareed
- Department of Psychiatry, Emory University, School of Medicine/Atlanta VA Medical center, Decatur, GA 30033, USA.
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Wang L, Liu J, Pi C, Zeng X, Zhou M, Jiang X, Chen S, Ren Z, Xu A. Identification of a novel M-superfamily conotoxin with the ability to enhance tetrodotoxin sensitive sodium currents. Arch Toxicol 2009; 83:925-32. [PMID: 19562324 DOI: 10.1007/s00204-009-0453-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Accepted: 06/15/2009] [Indexed: 11/25/2022]
Abstract
In this work, a novel M-superfamily conotoxin, designated lt3a, was purified from the crude venom of Conus litteratus. Combined with peptide sequencing, MALDI-TOF mass spectrometry and cDNA cloning techniques, the amino acid sequence of lt3a was supposed to be DgammaCCgamma OQWCDGACDCCS, where O is hydroxyproline and gamma is carboxyglutamate. The Cys framework of lt3a (-CC-C-C-CC-) is similar to that of psi-, mu-, kappaM-conotoxins, which are representatives of M-conotoxins. Peptide lt3a is categorized into M1 branch based on the number of residues in the last Cys loop. Whole cell patch-clamp study on adult rat dorsal root ganglion neurons indicated that lt3a could enhance tetrodotoxin-sensitive sodium currents. This is a previously unknown function of M-superfamily conotoxins.
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Affiliation(s)
- Lei Wang
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 135 Xingangxi Road, 510275 Guangzhou, People's Republic of China
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