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Apryani E, Ali U, Wang ZY, Wu HY, Mao XF, Ahmad KA, Li XY, Wang YX. The spinal microglial IL-10/β-endorphin pathway accounts for cinobufagin-induced mechanical antiallodynia in bone cancer pain following activation of α7-nicotinic acetylcholine receptors. J Neuroinflammation 2020; 17:75. [PMID: 32113469 PMCID: PMC7049212 DOI: 10.1186/s12974-019-1616-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/09/2019] [Indexed: 02/06/2023] Open
Abstract
Background Cinobufagin is the major bufadienolide of Bufonis venenum (Chansu), which has been traditionally used for the treatment of chronic pain especially cancer pain. The current study aimed to evaluate its antinociceptive effects in bone cancer pain and explore the underlying mechanisms. Methods Rat bone cancer model was used in this study. The withdrawal threshold evoked by stimulation of the hindpaw was determined using a 2290 CE electrical von Frey hair. The β-endorphin and IL-10 levels were measured in the spinal cord and cultured primary microglia, astrocytes, and neurons. Results Cinobufagin, given intrathecally, dose-dependently attenuated mechanical allodynia in bone cancer pain rats, with the projected Emax of 90% MPE and ED50 of 6.4 μg. Intrathecal cinobufagin also stimulated the gene and protein expression of IL-10 and β-endorphin (but not dynorphin A) in the spinal cords of bone cancer pain rats. In addition, treatment with cinobufagin in cultured primary spinal microglia but not astrocytes or neurons stimulated the mRNA and protein expression of IL-10 and β-endorphin, which was prevented by the pretreatment with the IL-10 antibody but not β-endorphin antiserum. Furthermore, spinal cinobufagin-induced mechanical antiallodynia was inhibited by the pretreatment with intrathecal injection of the microglial inhibitor minocycline, IL-10 antibody, β-endorphin antiserum and specific μ-opioid receptor antagonist CTAP. Lastly, cinobufagin- and the specific α-7 nicotinic acetylcholine receptor (α7-nAChR) agonist PHA-543613-induced microglial gene expression of IL-10/β-endorphin and mechanical antiallodynia in bone cancer pain were blocked by the pretreatment with the specific α7-nAChR antagonist methyllycaconitine. Conclusions Our results illustrate that cinobufagin produces mechanical antiallodynia in bone cancer pain through spinal microglial expression of IL-10 and subsequent β-endorphin following activation of α7-nAChRs. Our results also highlight the broad significance of the recently uncovered spinal microglial IL-10/β-endorphin pathway in antinociception.
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Affiliation(s)
- Evhy Apryani
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Usman Ali
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Zi-Ying Wang
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Hai-Yun Wu
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xiao-Fang Mao
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Khalil Ali Ahmad
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xin-Yan Li
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Yong-Xiang Wang
- Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China.
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2
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Huang Y, Wen LL, Xie JD, Ouyang HD, Chen DT, Zeng WA. Antinociceptive effectiveness of the inhibition of NCX reverse-mode action in rodent neuropathic pain model. Mol Pain 2019; 15:1744806919864511. [PMID: 31370728 PMCID: PMC6681272 DOI: 10.1177/1744806919864511] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Chronic neuropathic pain is a debilitating condition that remains difficult
to treat. The Na+-Ca2+ exchanger (NCX) is a
transporter that can exchange Ca2+ with Na+ in either
direction to maintain intracellular Ca2+ homeostasis. However,
the effect of NCX on neuropathic pain remains unclear. Therefore, in this
study, we aimed to clarify whether neuropathic pain is altered by NCX. Methods Adult Sprague–Dawley rats and mice (NCX2 knockout and wild type) were
randomized to receive spinal nerve ligation surgery or intrathecal
injection. Using behavioral testing to analyze the withdrawal thresholds and
thermal withdrawal latency of rats after surgery or intrathecal injection.
Immunohistochemistry and Western blotting were used to analyze the changes
of NCX protein and downstream signaling pathways in rats dorsal root
ganglion. We isolated the dorsal root ganglion neurons of adult rats using
Fluo-4AM to detect the Ca2+ imaging in neurons after drug
treatment. Results NCX was expressed in the sensory neurons of rodent dorsal root ganglia. NCX
expression was altered in ipsilateral L4–6 dorsal root ganglion neurons in
spinal nerve ligation rats. Intrathecal injection of an inhibitor of
reverse-mode NCX activity (KB-R7943 5∼20 µg) had an antinociceptive effect
in spinal nerve ligation rats, and the effect lasted for 3 h. We measured
the expression of signaling pathway molecules in dorsal root ganglion
neurons, and only the p-extracellular signal-regulated kinase (ERK) 1/2
level was reduced after intrathecal injection in the spinal nerve ligation
group compared to the control group. In cultured dorsal root ganglion
neurons, inhibitors of reverse-mode NCX activity (KB-R7943 and ORM-10103)
restrained Ca2+ overload after tumor necrosis factor alpha
(TNF-α) or lipopolysaccharide (LPS) treatment. NCX2 knockout mice presented
an antinociceptive effect that lasted for more than 28 days after spinal
nerve ligation surgery. The p-ERK1/2 level in NCX2 knockout mice ipsilateral
L4–6 dorsal root ganglion neurons was lower than that in wild-type mice. Conclusions NCX proteins may mediate neuropathic pain progression via the Ca2+
and ERK pathways. NCX represents a potential target for the treatment of
neuropathic pain.
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Affiliation(s)
- Yang Huang
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Li-Li Wen
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jing-Dun Xie
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Han-Dong Ouyang
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Dong-Tai Chen
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wei-An Zeng
- 1 Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou, China.,2 State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,3 Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
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3
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Gross NB, Abad N, Lichtstein D, Taron S, Aparicio L, Fonteh AN, Arakaki X, Cowan RP, Grant SC, Harrington MG. Endogenous Na+, K+-ATPase inhibitors and CSF [Na+] contribute to migraine formation. PLoS One 2019; 14:e0218041. [PMID: 31173612 PMCID: PMC6555523 DOI: 10.1371/journal.pone.0218041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 05/24/2019] [Indexed: 12/24/2022] Open
Abstract
There is strong evidence that neuronal hyper-excitability underlies migraine, and may or may not be preceded by cortical spreading depression. However, the mechanisms for cortical spreading depression and/or migraine are not established. Previous studies reported that cerebrospinal fluid (CSF) [Na+] is higher during migraine, and that higher extracellular [Na+] leads to hyper-excitability. We raise the hypothesis that altered choroid plexus Na+, K+-ATPase activity can cause both migraine phenomena: inhibition raises CSF [K+] and initiates cortical spreading depression, while activation raises CSF [Na+] and causes migraine. In this study, we examined levels of specific Na+, K+-ATPase inhibitors, endogenous ouabain-like compounds (EOLC), in CSF from migraineurs and controls. CSF EOLC levels were significantly lower during ictal migraine (0.4 nM +/- 0.09) than from either controls (1.8 nM +/- 0.4) or interictal migraineurs (3.1 nM +/- 1.9). Blood plasma EOLC levels were higher in migraineurs than controls, but did not differ between ictal and interictal states. In a Sprague-Dawley rat model of nitroglycerin-triggered central sensitization, we changed the concentrations of EOLC and CSF sodium, and measured aversive mechanical threshold (von Frey hairs), trigeminal nucleus caudalis activation (cFos), and CSF [Na+] (ultra-high field 23Na MRI). Animals were sensitized by three independent treatments: intraperitoneal nitroglycerin, immunodepleting EOLC from cerebral ventricles, or cerebroventricular infusion of higher CSF [Na+]. Conversely, nitroglycerin-triggered sensitization was prevented by either vascular or cerebroventricular delivery of the specific Na+, K+-ATPase inhibitor, ouabain. These results affirm our hypothesis that higher CSF [Na+] is linked to human migraine and to a rodent migraine model, and demonstrate that EOLC regulates them both. Our data suggest that altered choroid plexus Na+, K+-ATPase activity is a common source of these changes, and may be the initiating mechanism in migraine.
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Affiliation(s)
- Noah B. Gross
- Huntington Medical Research Institutes, Pasadena, California, United States of America
| | - Nastaren Abad
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida, United States of America
- Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, United States of America
| | - David Lichtstein
- Department of Medical Neurobiology, Institute for Medical Research, Israel-Canada, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shiri Taron
- Department of Medical Neurobiology, Institute for Medical Research, Israel-Canada, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Lorena Aparicio
- Huntington Medical Research Institutes, Pasadena, California, United States of America
| | - Alfred N. Fonteh
- Huntington Medical Research Institutes, Pasadena, California, United States of America
| | - Xianghong Arakaki
- Huntington Medical Research Institutes, Pasadena, California, United States of America
| | - Robert P. Cowan
- Department of Neurology, Stanford University, Palo Alto, California, United States of America
| | - Samuel C. Grant
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida, United States of America
- Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, United States of America
| | - Michael G. Harrington
- Huntington Medical Research Institutes, Pasadena, California, United States of America
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Chao PK, Chang HF, Ou LC, Chuang JY, Lee PT, Chang WT, Chen SC, Ueng SH, Hsu JTA, Tao PL, Law PY, Loh HH, Yeh SH. Convallatoxin enhance the ligand-induced mu-opioid receptor endocytosis and attenuate morphine antinociceptive tolerance in mice. Sci Rep 2019; 9:2405. [PMID: 30787373 PMCID: PMC6382827 DOI: 10.1038/s41598-019-39555-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 01/07/2019] [Indexed: 11/29/2022] Open
Abstract
Morphine is a unique opioid analgesic that activates the mu-opioid receptor (MOR) without efficiently promoting its endocytosis that may underlie side effects. Our objective was to discover a novel enhancer of ligand-induced MOR endocytosis and determine its effects on analgesia, tolerance and dependence. We used high-throughput screening to identify convallatoxin as an enhancer of ligand-induced MOR endocytosis with high potency and efficacy. Treatment of cells with convallatoxin enhanced morphine-induced MOR endocytosis through an adaptor protein 2 (AP2)/clathrin-dependent mechanism, attenuated morphine-induced phosphorylation of MOR, and diminished desensitization of membrane hyperpolarization. Furthermore, co-treatment with chronic convallatoxin reduced morphine tolerance in animal models of acute thermal pain and chronic inflammatory pain. Acute convallatoxin administration reversed morphine tolerance and dependence in morphine-tolerant mice. These findings suggest convallatoxin are potentially therapeutic for morphine side effects and open a new avenue to study MOR trafficking.
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Affiliation(s)
- Po-Kuan Chao
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Hsiao-Fu Chang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Li-Chin Ou
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Jian-Ying Chuang
- The PhD Program for Neural Regenerative Medicine, Taipei Medical University, Taipei, 110, Taiwan
| | - Pin-Tse Lee
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, NIH/DHHS, Baltimore, MD, 21224, USA
| | - Wan-Ting Chang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Shu-Chun Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Shau-Hua Ueng
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - John Tsu-An Hsu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Pao-Luh Tao
- Center for Neuropsychiatric Research, National Heath Research Institutes, Zhunan, 35053, Taiwan
| | - Ping-Yee Law
- Department of Pharmacology, Medical School University of Minnesota, Minneapolis, MN, 55455-0217, USA
| | - Horace H Loh
- Department of Pharmacology, Medical School University of Minnesota, Minneapolis, MN, 55455-0217, USA
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan.
- The PhD Program for Neural Regenerative Medicine, Taipei Medical University, Taipei, 110, Taiwan.
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5
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Cavalcante-Silva LHA, Lima ÉDA, Carvalho DCM, de Sales-Neto JM, Alves AKDA, Galvão JGFM, da Silva JSDF, Rodrigues-Mascarenhas S. Much More than a Cardiotonic Steroid: Modulation of Inflammation by Ouabain. Front Physiol 2017; 8:895. [PMID: 29176951 PMCID: PMC5686084 DOI: 10.3389/fphys.2017.00895] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/24/2017] [Indexed: 12/22/2022] Open
Abstract
Since the discovery of ouabain as a cardiotonic steroid hormone present in higher mammals, research about it has progressed rapidly and several of its physiological and pharmacological effects have been described. Ouabain can behave as a stress hormone and adrenal cortex is its main source. Direct effects of ouabain are originated due to the binding to its receptor, the Na+/K+-ATPase, on target cells. This interaction can promote Na+ transport blockade or even activation of signaling transduction pathways (e.g., EGFR/Src-Ras-ERK pathway activation), independent of ion transport. Besides the well-known effect of ouabain on the cardiovascular system and blood pressure control, compelling evidence indicates that ouabain regulates a number of immune functions. Inflammation is a tightly coordinated immunological function that is also affected by ouabain. Indeed, this hormone can modulate many inflammatory events such as cell migration, vascular permeability, and cytokine production. Moreover, ouabain also interferes on neuroinflammation. However, it is not clear how ouabain controls these events. In this brief review, we summarize the updates of ouabain effect on several aspects of peripheral and central inflammation, bringing new insights into ouabain functions on the immune system.
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Affiliation(s)
- Luiz H A Cavalcante-Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Laboratório de Imunobiotecnologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Éssia de Almeida Lima
- Programa de Pós-Graduação em Biotecnologia, Laboratório de Imunobiotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Deyse C M Carvalho
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Laboratório de Imunobiotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - José M de Sales-Neto
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Laboratório de Imunobiotecnologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Anne K de Abreu Alves
- Programa de Pós-Graduação em Biotecnologia, Laboratório de Imunobiotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - José G F M Galvão
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Laboratório de Imunobiotecnologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Juliane S de França da Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Laboratório de Imunobiotecnologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Sandra Rodrigues-Mascarenhas
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Laboratório de Imunobiotecnologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil.,Programa de Pós-Graduação em Biotecnologia, Laboratório de Imunobiotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil.,Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Laboratório de Imunobiotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
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6
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Helås T, Sagafos D, Kleggetveit I, Quiding H, Jönsson B, Segerdahl M, Zhang Z, Salter H, Schmelz M, Jørum E. Pain thresholds,supra-threshold pain and lidocaine sensitivity in patients with erythromelalgia, including the I848Tmutation in NaV1.7. Eur J Pain 2017; 21:1316-1325. [DOI: 10.1002/ejp.1030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2017] [Indexed: 11/09/2022]
Affiliation(s)
- T. Helås
- Section of Clinical Neurophysiology, Department of Neurology; Oslo University Hospital - Rikshospitalet; Norway
| | - D. Sagafos
- Section of Clinical Neurophysiology, Department of Neurology; Oslo University Hospital - Rikshospitalet; Norway
| | - I.P. Kleggetveit
- Section of Clinical Neurophysiology, Department of Neurology; Oslo University Hospital - Rikshospitalet; Norway
| | | | | | | | - Z. Zhang
- Astra-Zeneca R&D; Södertälje Sweden
| | - H. Salter
- Astra-Zeneca R&D; Södertälje Sweden
- Department of Clinical Neuroscience; Karolinska Institutet; Solna Sweden
| | - M. Schmelz
- Department of Anesthesiology Mannheim; Heidelberg University; Germany
| | - E. Jørum
- Section of Clinical Neurophysiology, Department of Neurology; Oslo University Hospital - Rikshospitalet; Norway
- Faculty of Medicine, Institute of Clinical Medicine; University of Oslo; Norway
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7
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Wang P, Ouyang H, Li Q, Hao L, Huang Y, Zeng W. Antinociceptive effect of intrathecal amiloride on neuropathic pain in rats. Neurosci Lett 2015. [PMID: 26225927 DOI: 10.1016/j.neulet.2015.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate the antinociception of intrathecal amiloride and examine its effect on the neuropathic pain-induced activation of c-Fos and p-p38 MAPK in the rat spinal dorsal horn (SDH). Sprague-Dawley rats were chronically implanted with intrathecal catheters, and the ability of intrathecal amiloride to alleviate nociceptive behaviours in rats with neuropathic pain was tested. Immunohistochemical techniques were utilized to detect the expression of c-Fos and p-p38 in SDH in the control and amiloride (100μg) groups. Intrathecal amiloride produced dose- and time-dependent antinociception in rats. Additionally, immunohistochemical experiments showed that the expression of c-Fos and p-p38 dramatically decreased in the superficial laminae of the ipsilateral SDH in the 100-μg amiloride group (P<0.01), whereas, there was no statistical significance on the contralateral side, compared with the control group. Intrathecally administered amiloride develops dose- and time-dependent antinociceptive action in rats with neuropathic pain. It most likely reduces spinal neurons and microglia activation via inhibiting c-Fos and p-p38 MAPK in the SDH of rats.
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Affiliation(s)
- Peizong Wang
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, People's Republic of China
| | - Handong Ouyang
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, People's Republic of China
| | - Qiang Li
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, People's Republic of China
| | - Lei Hao
- Department of Gastrointestinal Surgery, 1st Affiliated Hospital, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510405, People's Republic of China
| | - Yang Huang
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, People's Republic of China
| | - Weian Zeng
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong 510060, People's Republic of China.
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8
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Anti-inflammatory and antinociceptive activities of bufalin in rodents. Mediators Inflamm 2014; 2014:171839. [PMID: 24719521 PMCID: PMC3955582 DOI: 10.1155/2014/171839] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/10/2014] [Accepted: 01/12/2014] [Indexed: 12/20/2022] Open
Abstract
The aims of this study were to evaluate the anti-inflammatory and analgesic effects of bufalin, a major component of "Chan-su." We used a carrageenan-induced paw edema model to assess the anti-inflammatory activity of this compound, and Western blot analysis detected NF- κ B signaling during this effect. The antinociceptive activities were evaluated by acetic acid-induced writhing, formalin, and hot-plate tests; open-field test investigated effects on the central nervous system. Our data showed that bufalin (0.3 and 0.6 mg/kg, i.p.) potently decreased carrageenan-induced paw edema. Bufalin down regulated the expression levels of nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) during these treatments. Further studies demonstrated that bufalin significantly inhibited the activation of NF-κB signaling. Bufalin also reduced acetic acid-induced writhing and the licking time in the formalin test and increased hot-plate reaction latencies. Naloxone pretreatment (2 mg/kg, i.p.) in the early phases of the formalin test and hot-plate test significantly attenuated the bufalin-induced antinociception effects, which suggests the involvement of the opioid system. A reduction in locomotion was not observed in the open-field test after bufalin administration. Taken together, bufalin treatment resulted in in vivo anti-inflammatory and analgesic effects, and bufalin may be a novel, potential drug for the treatment of inflammatory diseases.
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9
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Li Q, Ouyang H, Wang P, Zeng W. The antinociceptive effect of intrathecal escin in the rat formalin test. Eur J Pharmacol 2012; 674:234-8. [DOI: 10.1016/j.ejphar.2011.10.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 10/06/2011] [Accepted: 10/15/2011] [Indexed: 12/30/2022]
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10
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Ouyang H, Bai X, Huang W, Chen D, Dohi S, Zeng W. The antinociceptive activity of intrathecally administered amiloride and its interactions with morphine and clonidine in rats. THE JOURNAL OF PAIN 2011; 13:41-8. [PMID: 22154330 DOI: 10.1016/j.jpain.2011.09.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/23/2011] [Accepted: 09/27/2011] [Indexed: 10/14/2022]
Abstract
UNLABELLED In this study, we aimed to evaluate the antinociceptive interaction between intrathecally administered amiloride and morphine or clonidine. Using rats chronically implanted with lumbar intrathecal catheters, we examined the ability of intrathecal amiloride, morphine, clonidine, and mixtures of amiloride-morphine and amiloride-clonidine to alter tail-flick latency. To characterize any interactions, isobolographic analysis was performed. The effects of pretreatment with intrathecally administered naloxone or yohimbine were tested. Intrathecal administration of amiloride (25-150 μg), morphine (.25-10 μg), or clonidine (.5-10 μg) alone produced significant dose-dependent antinociception in the tail-flick test. The median effective dose (ED(50)) values for intrathecally administered amiloride, morphine, and clonidine were 120.5 μg, 5.0 μg, and 4.4 μg, respectively. Isobolographic analysis exhibited a synergistic interaction after coadministration of amiloride-morphine and amiloride-clonidine. Intrathecal pretreatment with naloxone (10 μg) completely blocked the antinociceptive effects of morphine and the amiloride-morphine mixture. Intrathecal pretreatment with yohimbine (20 μg) completely blocked the antinociceptive effect of clonidine and antagonized the effect of the amiloride-clonidine mixture. There was no motor dysfunction or significant change in blood pressure or heart rate after the intrathecal administration of amiloride, amiloride-morphine, and amiloride-clonidine. The synergistic effect observed after the coadministration of amiloride and morphine or clonidine suggests a functional interaction among calcium channels, μ-receptors and α(2)-receptors at the spinal cord level of the nociceptive processing system. PERSPECTIVE Although intrathecal morphine and clonidine produces pronounced analgesia, antinociceptive doses of intrathecal morphine and clonidine produce several side effects, including hypotension, bradycardia, sedation, and tolerance. This article presents antinociceptive synergistic interaction between amiloride and morphine, amiloride, and clonidine on thermal nociceptive tests in the rat.
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Affiliation(s)
- Handong Ouyang
- Department of Anesthesiology, State Key Laboratory of Oncology on Southern China, Cancer Center, Sun Yat-Sen University, Guangzhou, China
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11
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Anti-inflammatory and antinociceptive activity of ouabain in mice. Mediators Inflamm 2011; 2011:912925. [PMID: 21772669 PMCID: PMC3136139 DOI: 10.1155/2011/912925] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 02/17/2011] [Accepted: 03/26/2011] [Indexed: 11/23/2022] Open
Abstract
Ouabain, an inhibitor of the Na+/K+-ATPase pump, was identified as an endogenous substance of human plasma. Ouabain has been studied for its ability to interfere with various regulatory mechanisms. Despite the studies portraying the ability of ouabain to modulate the immune response, little is known about the effect of this substance on the inflammatory process. The aim of this work was to study the effects triggered by ouabain on inflammation and nociceptive models. Ouabain produced a reduction in the mouse paw edema induced by carrageenan, compound 48/80 and zymosan. This anti-inflammatory potential might be related to the inhibition of prostaglandin E2, bradykinin, and mast-cell degranulation but not to histamine. Ouabain also modulated the inflammation induced by concanavalin A by inhibiting cell migration. Besides that, ouabain presented antinociceptive activity. Taken these data together, this work demonstrated, for the first time, that ouabain presented in vivo analgesic and anti-inflammatory effects.
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12
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Deng H, Yang Z, Li Y, Bao G, Friedrich T, Gu Q, Shen X, Schwarz W. Interactions of Na+,K+-ATPase and co-expressed delta-opioid receptor. Neurosci Res 2009; 65:222-7. [PMID: 19619588 DOI: 10.1016/j.neures.2009.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 06/16/2009] [Accepted: 07/10/2009] [Indexed: 11/24/2022]
Abstract
To investigate interference of delta-opioid receptor with the Na(+),K(+)-ATPase in a simple model system, we used the Xenopus oocytes as an expression system. Our results indicate that expression of the delta-opioid receptor (DOR) results in reduction of endogenous sodium-pump activity. Stimulation of DOR by the DOR agonist [(D)-Pen(2,5)]-enkephalin (DPDPE) had no pronounced additional effect on pump activity. Qualitatively similar results were obtained in experiments with a variety of co-expressed exogenous sodium pumps. We suggest that reduced pump activity with DOR expression is brought about by an interaction of the pump with DOR. Direct interaction is also supported by co-immunoprecipitation, not only in the Xenopus oocytes but also in rat hippocampal neurons. The interaction may be responsible for altered agonist sensitivity of DOR; activation of the sodium pump led to an increase of the K(m) value for DOR activation by DPDPE from about 0.17 to 0.27muM. In conclusion, pump activity not only affects neural activity directly but our results also suggest that pump activity is affected through functional interaction with DOR that will modulate pain sensation.
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Affiliation(s)
- Haiping Deng
- Shanghai Research Center for Acupuncture and Meridians, China
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13
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Thever MD, Saier MH. Bioinformatic characterization of p-type ATPases encoded within the fully sequenced genomes of 26 eukaryotes. J Membr Biol 2009; 229:115-30. [PMID: 19548020 PMCID: PMC2709905 DOI: 10.1007/s00232-009-9176-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 05/14/2009] [Indexed: 10/30/2022]
Abstract
P-type ATPases play essential roles in numerous processes, which in humans include nerve impulse propagation, relaxation of muscle fibers, secretion and absorption in the kidney, acidification of the stomach and nutrient absorption in the intestine. Published evidence suggests that uncharacterized families of P-type ATPases with novel specificities exist. In this study, the fully sequenced genomes of 26 eukaryotes, including animals, plants, fungi and unicellular eukaryotes, were analyzed for P-type ATPases. We report the organismal distributions, phylogenetic relationships, probable topologies and conserved motifs of nine functionally characterized families and 13 uncharacterized families of these enzyme transporters. We have classified these proteins according to the conventions of the functional and phylogenetic IUBMB-approved transporter classification system ( www.tcdb.org , Saier et al. in Nucleic Acids Res 34:181-186, 2006; Nucleic Acids Res 37:274-278, 2009).
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Affiliation(s)
- Mark D. Thever
- Department of Molecular Biology, Division of Biological Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, 92093-0116 CA USA
| | - Milton H. Saier
- Department of Molecular Biology, Division of Biological Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, 92093-0116 CA USA
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14
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LaCroix-Fralish ML, Mo G, Smith SB, Sotocinal SG, Ritchie J, Austin JS, Melmed K, Schorscher-Petcu A, Laferriere AC, Lee TH, Romanovsky D, Liao G, Behlke MA, Clark DJ, Peltz G, Séguéla P, Dobretsov M, Mogil JS. The beta3 subunit of the Na+,K+-ATPase mediates variable nociceptive sensitivity in the formalin test. Pain 2009; 144:294-302. [PMID: 19464798 DOI: 10.1016/j.pain.2009.04.028] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 04/09/2009] [Accepted: 04/28/2009] [Indexed: 01/19/2023]
Abstract
It is widely appreciated that there is significant inter-individual variability in pain sensitivity, yet only a handful of contributing genetic variants have been identified. Computational genetic mapping and quantitative trait locus analysis suggested that variation within the gene coding for the beta3 subunit of the Na+,K+-ATPase pump (Atp1b3) contributes to inter-strain differences in the early phase formalin pain behavior. Significant strain differences in Atp1b3 gene expression, beta3 protein expression, and biophysical properties of the Na+,K+ pump in dorsal root ganglia neurons from resistant (A/J) and sensitive (C57BL/6J) mouse strains supported the genetic prediction. Furthermore, in vivo siRNA knockdown of the beta3 subunit produced strain-specific changes in the early phase pain response, completely rescuing the strain difference. These findings indicate that the beta3 subunit of the Na+,K+-ATPase is a novel determinant of nociceptive sensitivity and further supports the notion that pain variability genes can have very selective effects on individual pain modalities.
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Affiliation(s)
- Michael L LaCroix-Fralish
- Department of Psychology and Centre for Research on Pain, McGill University, 1205 Dr. Penfield Ave., Montreal, Que., Canada H3A 1B1 Department of Neurology and Neurosurgery, Montreal Neurological Institute, and Centre for Research on Pain, McGill University, Montreal, Que., Canada H3A 2B4 Department of Anesthesiology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA Department of Genetics and Genomics, Roche Palo Alto, Palo Alto, CA 94304, USA Integrated DNA Technologies Inc., Coralville, IA 52241, USA Department of Anesthesiology, Stanford University, Palo Alto, CA 94304, USA Department of Anesthesia, Stanford University, Stanford, CA 94305, USA
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15
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Zeng W, Chen X, Dohi S. Antinociceptive Synergistic Interaction Between Clonidine and Ouabain on Thermal Nociceptive Tests in the Rat. THE JOURNAL OF PAIN 2007; 8:983-8. [PMID: 17892975 DOI: 10.1016/j.jpain.2007.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Revised: 07/18/2007] [Accepted: 07/22/2007] [Indexed: 10/22/2022]
Abstract
UNLABELLED The antinociceptive effect produced by spinal injection of clonidine (an alpha(2)-adrenergic agonist) is mediated by a cholinergic mechanism. We aimed in the current study to evaluate the antinociceptive interaction between intrathecally administered ouabain, an inhibitor of Na(+), K(+)-ATPase, and clonidine. We used rats chronically implanted with lumbar intrathecal catheters to examine the ability of intrathecal clonidine and ouabain and the mixtures of clonidine-ouabain to alter tail-flick latency. To characterize the interaction, isobolographic analysis was performed. Intrathecal clonidine (0.5-10 microg) and ouabain (0.1-5 microg) produced significant dose- and time-dependent antinociception in the tail-flick tests. The median effective dose (ED(50)) values for intrathecally administered ouabain and clonidine were 2.3 microg and 4.7 microg, respectively. The experimental point for the ouabain-clonidine combination decreased significantly (P < .05) below the lines of additivity. Isobolographic analysis exhibited a synergistic interaction after the coadministration of ouabain and clonidine. No motor impairment was observed in the animals after intrathecal administration of the combination of ouabain and clonidine or clonidine alone. Intrathecal pretreatment with atropine but not yohimbine blocked the antinociceptive effect of ouabain and attenuated its interaction with spinal clonidine. These results suggest that the synergistic interaction of ouabain and clonidine were probably mediated, at least in part, via an enhancement of cholinergic transmission in the spinal nociceptive processing system. PERSPECTIVE Although intrathecal clonidine produces pronounced analgesia, antinociceptive doses of intrathecal clonidine produce several side effects, including hypotension, bradycardia, and sedation. This article presents antinociceptive synergistic interaction between clonidine and ouabain on thermal nociceptive tests in the rat.
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Affiliation(s)
- Weian Zeng
- Department of Anesthesiology, Tumor Hospital, Cancer Center, Sun Yat-sen University, Guangzhou, China.
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16
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Horvath G, Kekesi G. Interaction of endogenous ligands mediating antinociception. ACTA ACUST UNITED AC 2006; 52:69-92. [PMID: 16488019 DOI: 10.1016/j.brainresrev.2006.01.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 01/04/2006] [Accepted: 01/06/2006] [Indexed: 11/17/2022]
Abstract
It is well known that a multitude of transmitters and receptors are involved in the nociceptive system, some of them increasing and others inhibiting the pain sensation both peripherally and centrally. These substances, which include neurotransmitters, hormones, etc., can modify the activity of nerves involved in the pain pathways. Furthermore, the organism itself can express very effective antinociception under different circumstances (e.g. stress), and, during such situations, the levels of various endogenous ligands change. A very exciting field of pain research relates to the roles of endogenous ligands. Most of them have been suggested to influence pain transmission, but only a few studies have been performed on the interactions of different endogenous ligands. This review focuses on the results of antinociceptive interactions after the co-administration of endogenous ligands. The data based on 55 situations reveal that the interactions between the endogenous ligands are very different, depending on the substances, the pain tests, the species of animals and the route of administrations. It is also revealed that only a few of the possible interactions between endogenous ligands have been investigated to date, in spite of the fact that the type of antinociceptive interaction between different endogenous ligands could hardly be predicted. The results indicate that the combination of endogenous ligands should not be omitted from the pain therapy arsenal. Attention will hopefully be drawn to the complex interdependence of endogenous ligands and their potential use in clinical practice.
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Affiliation(s)
- Gyongyi Horvath
- Department of Physiology, Faculty of Medicine, University of Szeged, P.O. Box 427, H-6701 Szeged, Hungary.
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17
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Zeng W, Ma H, Tan H, Dohi S. Effects of succinylcholine on spinal antinociception with lidocaine in rats. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.acpain.2005.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Czaplinski M, Abad C, Eblen-Zajjur A. Normal expression and inflammation-induced changes of Na and Na/K ATPase activity in spinal dorsal horn of the rat. Neurosci Lett 2005; 374:147-51. [PMID: 15644282 DOI: 10.1016/j.neulet.2004.10.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Revised: 10/15/2004] [Accepted: 10/15/2004] [Indexed: 11/15/2022]
Abstract
We tested whether that peripheral inflammation induces changes in the spinal dorsal horn ATPase activity. Adult Sprague-Dawley rats were anesthetized (thiobarbital), the left hind paw (inflammation group; n = 15) was immersed in water at 60 degrees C for 60s, which induced a local inflammation. A control group (n = 12) was tested with water at room temperature. After 60 min of peripheral inflammation left (LDH) or right lumbar dorsal horn (RDH) were processed for total, Na/K, Na and remanent ATPase activities (nM P(i) (mgprotein)(-1) min(-1)). In control animals isoenzymatic activities were: Na (31.2%); Na/K (20.6%) and remanent (48.2%) from total ATPase activity. No LDH-RDH asymmetry was found. The inflammation group presented an ipsilateral increase of total ATPase activity in LDH (X+/-S.E.M.; 4798.9+/-601) over the RDH (3982.2+/-451; Delta+817; P<0.05). This is due to an increase in Na ATPase activity (1609.3+/-297) over RDH (1164.2+/-166; Delta+445; P<0.05). ATPase activities were increased in LDH from inflamed over the control group as follows: total (4798.9+/-601; Delta+840; P<0.05), Na/K (1298.1+/-301; Delta+483; P<0.05) and Na (1609.3+/-297; Delta+373; P<0.05). These increased ATPase activities, induced in a short time, can be considered a functional marker of nociceptive neuronal activity.
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Affiliation(s)
- Mariana Czaplinski
- Dpto. de Ciencias Fisiológicas, Facultad de Ciencias de la Salud, Universidad de Carabobo, P.O. Box 3798, El Trigal 2002, Valencia, Venezuela
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19
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Ma HC, Wang YF, Feng CS, Zhao H, Dohi S. Effects of adenosine agonist R-phenylisopropyl-adenosine on halothane anesthesia and antinociception in rats. Acta Pharmacol Sin 2005; 26:181-5. [PMID: 15663896 DOI: 10.1111/j.1745-7254.2005.00521.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIM To investigate the antinociceptive effect of adenosine agonist R-phenylisopropyl-adenosine (R-PIA) given to conscious rats by intracerebroventricular (ICV) and intrathecal (IT), and identify the effect of R-PIA on minimum alveolar concentration (MAC) of halothane with pretreatment of A1 receptor antagonist 8-cyclopentyl-1,3-dipropylxanthine (DPCPX) or K+ channel blocker 4-aminopyridine (4-AP). METHODS Sprague-Dawley rats were implanted with 24-gauge stainless steel guide cannula using stereotaxic apparatus and ICV method, and an IT catheter (PE-10, 8.5 cm) was inserted into the lumbar subarachnoid space, while the rats were under pentobarbital anesthesia. After one week of recovery from surgery, rats were randomly assigned to one of the following protocols: MAC of halothane, or tail-flick latency. All measurements were performed after R-PIA (0.8-2.0 microg) microinjection into ICV and IT with or without pretreatment of DPCPX or 4-AP. RESULTS Microinjection of adenosine agonist R-PIA in doses of 0.8-2.0 microg into ICV and IT produced a significant dose- and time-dependent antinociceptive action as reflected by increasing latency times and ICV administration of adenosine agonist R-PIA (0.8 microg) reducing halothane anesthetic requirements (by 29%). The antinociception and reducing halothane requirements effected by adenosine agonist R-PIA was abolished by DPCPX and 4-AP. CONCLUSION ICV and IT administration of adenosine agonist R-PIA produced an antinociceptive effect in a dose-dependent manner and decreased halothane MAC with painful stimulation through activation of A1 receptor subtype, and the underlying mechanism involves K+ channel activation.
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Affiliation(s)
- Hai-Chun Ma
- Department of Anesthesiology, the First Hospital of Jilin University, Changchun 130021, China
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20
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Masocha W, Horvath G, Agil A, Ocana M, Del Pozo E, Szikszay M, Baeyens JM. Role of Na(+), K(+)-ATPase in morphine-induced antinociception. J Pharmacol Exp Ther 2003; 306:1122-8. [PMID: 12756273 DOI: 10.1124/jpet.103.052977] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We evaluated the modulation by Na+,K+-ATPase inhibitors of morphine-induced antinociception in the tail-flick test and [3H]naloxone binding to forebrain membranes. The antinociception induced by morphine (1-32 mg/kg, s.c.) in mice was dose-dependently antagonized by ouabain (1-10 ng/mouse, i.c.v.), which produced a significant shift to the right of the morphine dose-response curve. The i.c.v. administration of three Na+,K+-ATPase inhibitors (ouabain at 0.1-100, digoxin at 1-1000, and digitoxin at 10-10000 ng/mouse) dose-dependently antagonized the antinociceptive effect of morphine (4 mg/kg, s.c.) in mice, with the following order of potency: ouabain > digoxin > digitoxin. This effect cannot be explained by any interaction at opioid receptors, since none of these Na+,K+-ATPase inhibitors displaced [3H]naloxone from its binding sites, whereas naloxone did so in a concentration-dependent manner. The antinociception induced by morphine (5 mg/kg, s.c.) in rats was antagonized by the i.c.v. administration of ouabain at 10 ng/rat, whereas it was not significantly modified by intrathecally administered ouabain (10 and 100 ng/rat). These results suggest that the activation of Na+,K+-ATPase plays a role in the supraspinal, but not spinal, antinociceptive effect of morphine.
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Affiliation(s)
- Willias Masocha
- Department of Pharmacology and Neuroscience Institute, Faculty of Medicine, University of Granada, Granada, Spain
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21
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Horvath G, Agil A, Joo G, Dobos I, Benedek G, Baeyens JM. Evaluation of endomorphin-1 on the activity of Na(+),K(+)-ATPase using in vitro and in vivo studies. Eur J Pharmacol 2003; 458:291-7. [PMID: 12504785 DOI: 10.1016/s0014-2999(02)02813-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The goal of this study was to investigate the effects of endomorphin-1 on Na(+),K(+)-ATPase activity in mouse brain synaptosome in vitro, and its antinociceptive interaction with the Na(+),K(+)-ATPase inhibitor ouabain. Endomorphin-1 (0.1 nM-10 microM) produced a concentration-dependent (EC(50): 43.19 nM, CI: 23.38-65.71 nM, E(max): 25.86%, CI: 24.53-27.20%), naloxone-reversible increase of the synaptosomal Na(+),K(+)-ATPase activity. The intrathecally (i.t.) administered endomorphin-1 (2-20 microg) produced a dose-dependent short-lasting increase in the tail-flick latency. Ouabain itself (1-1000 ng, i.t.) did not cause antinociception. Treatment with 10 ng ouabain significantly decreased the antinociceptive effect of 2 microg endomorphin-1, but none of the other combinations did significantly differ from the endomorhin-1-treated groups. These data indicate that endomorphin-1 increases the activity of Na(+),K(+)-ATPase in vitro but this effect may play a weak role in the antinociception induced by intrathecal endomorphin-1.
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Affiliation(s)
- Gyöngyi Horvath
- Department of Physiology, Faculty of Medicine, University of Szeged, Szeged, Hungary.
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Bagrov AY, Bagrov YY, Fedorova OV, Kashkin VA, Patkina NA, Zvartau EE. Endogenous digitalis-like ligands of the sodium pump: possible involvement in mood control and ethanol addiction. Eur Neuropsychopharmacol 2002; 12:1-12. [PMID: 11788235 DOI: 10.1016/s0924-977x(01)00127-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
This review addresses possible involvement of endogenous digitalis-like sodium pump ligands (SPL) in the mood control and ethanol addiction. Endogenous SPL include cardenolide and bufadienolide classes. Multiple SPL and multiple isoforms of the Na/K-ATPase, one of the key membrane enzymes, comprise a complex regulatory system. In the nervous system, pattern of expression of Na/K-ATPase is based on multiple alpha/beta isoform combinations. Clinical studies demonstrate changes in the activity of Na/K-ATPase in patients with bipolar and unipolar mood disorders. The effects of ethanol on the Na/K-ATPase are concentration-dependent and are associated with both inhibition and activation of enzyme activity. Reinforcing effect of ethanol as well as its voluntary consumption may be affected by digitalis glycosides and endogenous SPL.
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Affiliation(s)
- Alexei Y Bagrov
- Laboratories of Membrane Barrier Functions and Pharmacology, Sechenov Institute of Evolutionary Physiology and Biochemistry, St. Petersburg, 194223, Russia
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Ma HC, Dohi S, Wang YF, Ishizawa Y, Yanagidate F. The antinociceptive and sedative effects of carbachol and oxycodone administered into brainstem pontine reticular formation and spinal subarachnoid space in rats. Anesth Analg 2001; 92:1307-15. [PMID: 11323367 DOI: 10.1097/00000539-200105000-00043] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
UNLABELLED To clarify the supraspinal and spinal actions of a cholinergic agonist, carbachol, and an opioid, oxycodone, we studied their antinociceptive and behavioral effects when administered into brainstem medial pontine reticular formation (mPRF) or spinal subarachnoid space with or without pretreatment of muscarinic receptor subtype antagonist. Sprague-Dawley rats were implanted with a 24-gauge stainless steel guide cannula into the mPRF and chronically implanted with a lumbar intrathecal catheter. Antinociception was tested using tail flick latency, motor coordination was evaluated by the rotarod test, and overt sedation was assessed using a behavioral checklist. Carbachol (0.5-4.0 microg) administered into the mPRF produced significant dose- and time-dependent antinociception, sedation, and motor dysfunction. These were completely blocked by pretreatment with atropine and the M(2) muscarinic antagonist, methoctramine, and partially blocked by pretreatment with M(1) pirenzepine but not with M(3) p-fHHSID: Oxycodone administered into the mPRF did not produce such effects. Spinal carbachol and oxycodone produced antinociception without any behavioral effects; their antinociceptive effects were completely blocked by pretreatment with atropine and M(2) antagonist. These results suggest that the antinociceptive action of carbachol is mediated by muscarinic cholinergic receptor activation, especially by M(2) receptor subtype in mPRF and spinal cord, and that although oxycodone seems unlikely to affect the cholinergic transmission of mPRF, spinal oxycodone-induced analgesia is at least partly mediated via the activation of M(2) receptor subtype at the spinal cord. IMPLICATIONS Carbachol-induced antinociception and sedation is mediated with the activation of M(2) muscarinic receptors. Oxycodone administered into brainstem medial pontine reticular formation did not cause any antinociceptive or behavioral effects, but its spinal administration produced a significant antinociception via M(2) muscarinic receptor activation
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Affiliation(s)
- H C Ma
- Department of Anesthesiology and Critical Care Medicine, Gifu University School of Medicine, Tsukasamachi-40, Gifu City, Gifu 500-8705, Japan
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Abstract
The ATPase activity of Na,K-ATPase-enriched membranes from canine renal medulla was determined in the absence of local anesthetic and in the presence of procaine, chloroprocaine, bupivacaine, mepivacaine, lidocaine, and two quaternary derivatives of lidocaine (QX-222 and QX-314) at 37( composite function)C. Chloroprocaine (IC(50)= 13 mM) had slightly greater potency than procaine (IC(50)= 17.7 mM). Bupivacaine (IC(50)= 6.7 mM) was more potent than its congener mepivacaine (IC(50)> 10 mM, the solubility limit). QX-222 (IC(50)> 600 mM) and QX-314 (IC(50)= 132 mM) had less potency than lidocaine (IC(50)= 30.4 mM). This study supports the interpretation that the uncharged forms of local anesthetics are much more potent inhibitors of Na,K-ATPase activity than the cationic forms.
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Affiliation(s)
- H Kutchai
- Department of Molecular Physiology & Biological Physics, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA.
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