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Parent-Vachon M, Beaudry F, Carrier D, Di Cristo G, Vachon P. The Effects of Exercise on Pain and Reproductive Performance in Female Pregnant Mice With Neuropathic Pain. Biol Res Nurs 2019; 21:500-509. [PMID: 31288563 DOI: 10.1177/1099800419857812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Pain can have negative, physiological and psychological impacts on pregnancy. Pregnant women are fearful of using pain medication because of teratogenic effects. In this study, we evaluated whether exercise could lower pain sensitivity in pregnant mice with neuropathic pain and reduce the negative effects of maternal pain on newborns. We randomly assigned 32 female mice to one of four groups (eight mice/group): Sham surgery with standard environment (SE) or enriched environment (EE) or spare nerve injury (SNI) with SE or EE. Mice in EE groups had access to an exercise wheel. Mothers were evaluated for mechanical sensitivity with Von Frey filaments and for exercise performance with computerized running wheels. Mice were impregnated 2 weeks after the initiation of EE. Pups were weighed and measured for length at birth and evaluated for negative geotaxis, righting, forelimb grasping, rooting, and crawling at 3 days postpartum and for crawling at 6 days postpartum. Following euthanasia, mothers' frontal cortexes were analyzed for selected neuropeptides. After exercise exposure, only SNI-SE females remained neuropathic. Exercise levels were similar between EE groups. Some brain neuropeptides (endorphins, enkephalins, and oxytocin) from SNI females showed significant differences with exercise. Number of pups was significantly smaller in the SNI-SE group. Significantly more pups died at birth in the SNI-SE group, but pup behavior tests (except righting) were similar across groups. Exercise can reduce neuropathic pain in pregnant mice. Neuropathic pain does not impact motor neurodevelopment of mice pups but does appear to affect litter size and neonatal mortality.
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Affiliation(s)
- Madeleine Parent-Vachon
- 1 Department of Veterinary Biomedicine, Faculty of Veterinary Medicine, Saint-Hyacinthe, Quebec, Canada
| | - Francis Beaudry
- 1 Department of Veterinary Biomedicine, Faculty of Veterinary Medicine, Saint-Hyacinthe, Quebec, Canada
| | - Denise Carrier
- 2 Ste-Justine Children's Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Graziella Di Cristo
- 2 Ste-Justine Children's Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Pascal Vachon
- 1 Department of Veterinary Biomedicine, Faculty of Veterinary Medicine, Saint-Hyacinthe, Quebec, Canada
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2
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Saidi M, Kamali S, Beaudry F. Neuropeptidomics: Comparison of parallel reaction monitoring and data‐independent acquisition for the analysis of neuropeptides using high‐resolution mass spectrometry. Biomed Chromatogr 2019; 33:e4523. [DOI: 10.1002/bmc.4523] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/18/2019] [Accepted: 02/25/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Mouna Saidi
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine VétérinaireUniversité de Montréal Saint‐Hyacinthe Québec Canada
| | - Soufiane Kamali
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine VétérinaireUniversité de Montréal Saint‐Hyacinthe Québec Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine VétérinaireUniversité de Montréal Saint‐Hyacinthe Québec Canada
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Salem JB, Nkambeu B, Beaudry F. Characterization of neuropeptide K processing in rat spinal cord S9 fractions using high-resolution quadrupole-Orbitrap mass spectrometry. Biomed Chromatogr 2018; 32:e4204. [DOI: 10.1002/bmc.4204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/15/2018] [Accepted: 01/26/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Jennifer Ben Salem
- Groupe de Recherche en Pharmacologie Animal du Québec, Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Québec Canada
| | - Bruno Nkambeu
- Groupe de Recherche en Pharmacologie Animal du Québec, Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Québec Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec, Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Québec Canada
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Saidi M, Beaudry F. Targeted high-resolution quadrupole-Orbitrap mass spectrometry analyses reveal a significant reduction of tachykinin and opioid neuropeptides level in PC1 and PC2 mutant mouse spinal cords. Neuropeptides 2017; 65:37-44. [PMID: 28476408 DOI: 10.1016/j.npep.2017.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 03/09/2017] [Accepted: 04/13/2017] [Indexed: 12/30/2022]
Abstract
Tachykinin and opioid neuropeptides play a fundamental role in pain transmission, modulation and inhibition. The proteolysis control of endogenous tachykinin and opioid neuropeptides has a significant impact on pain perception. The role of proprotein convertases (PCs) in the proteolysis of proneuropeptides was previously established but very few studies have shown the direct impact of PCs on the regulation of specific tachykinin and opioid peptides in the central nervous system. There is an increasing interest in the therapeutic targeting of PCs for the treatment of pain but it is imperative to assess the impact of PCs on the pronociceptive and the endogenous opioid systems. The objective of this study was to determine the relative concentration of targeted neuropeptides in the spinal cord of WT, PC1-/+ and PC2-/+ animals to establish the impact of a restricted PCs activity on the regulation of specific neuropeptides. The analysis of tachykinin and opioid neuropeptides were performed on a HPLC-MS/MS (High-Resolution Quadrupole-Orbitrap Mass Spectrometer). The results revealed a significant decrease of Dyn A (p<0.01), Leu-Enk (p<0.001), Met-Enk (p<0.001), Tach58-71 (p<0.05), SP (p<0.01) and NKA (p<0.001) concentrations in both, PC1-/+ and PC2-/+ animals. Therefore, the modulation of PCs activity has an important impact on specific pronociceptive peptides (SP and NKA), but the results also shown that endogenous opioid system is hindered and consequently it will affect significantly the pain modulatory pathways. These observations may have insightful impact on future analgesic drug developments and therapeutic strategies.
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Affiliation(s)
- Mouna Saidi
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomédecine vétérinaire, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomédecine vétérinaire, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada.
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Saidi M, Kamali S, Beaudry F. Characterization of Substance P processing in mouse spinal cord S9 fractions using high-resolution Quadrupole-Orbitrap mass spectrometry. Neuropeptides 2016; 59:47-55. [PMID: 27344070 DOI: 10.1016/j.npep.2016.06.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/13/2016] [Accepted: 06/16/2016] [Indexed: 11/17/2022]
Abstract
Tachykinins are a family of pronociceptive neuropeptides with a specific role in pain and inflammation. Several mechanisms regulate endogenous tachykinins and Substance P (SP) levels, including the differential expression of protachykinin mRNA and the controlled secretion of tachykinins from neurons. Proteolysis is suspected to regulate extracellular SP concentrations but few studies were conducted on the metabolism of proneuropeptides and neuropeptides. Here, we provide evidence that proteolysis controls SP levels in the spinal cord leading to the formation of active C-terminal fragments. Using high-resolution mass spectrometry, specific tachykinins fragments were characterized and quantified. The metabolic stability of β-Tachykinin58-71 and SP were very short resulting in half-life of 5.7 and 3.5min respectively. Several C-terminal fragments were identified, including SP3-11, SP5-11 and SP8-11, which conserve affinity for the Neurokinin 1 receptor. Interestingly, the metabolic stability of C-terminal fragments was significantly superior. Two specific Prolyl endopeptidase inhibitors were used and showed a significant reduction in the rate of formation of SP3-11 and SP5-11 providing strong evidence that Prolyl endopeptidase is involved into N-terminal processing of SP in the spinal cord.
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Affiliation(s)
- Mouna Saidi
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
| | - Soufiane Kamali
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada.
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Orduna AR, Beaudry F. Characterization of endoproteolytic processing of dynorphins by proprotein convertases using mouse spinal cord S9 fractions and mass spectrometry. Neuropeptides 2016; 57:85-94. [PMID: 26578270 DOI: 10.1016/j.npep.2015.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/09/2015] [Accepted: 10/11/2015] [Indexed: 12/21/2022]
Abstract
Dynorphins are important neuropeptides with a central role in nociception and pain alleviation. Many mechanisms regulate endogenous dynorphin concentrations, including proteolysis. Proprotein convertases (PCs) are widely expressed in the central nervous system and specifically cleave at C-terminal of either a pair of basic amino acids, or a single basic residue. The proteolysis control of endogenous big dynorphin (BDyn) and dynorphin A (Dyn A) levels has a profound impact on pain perception and the role of PCs remain unclear. The objective of this study was to decipher the role of PC1 and PC2 in the proteolysis control of BDyn and Dyn A levels using cellular fractions of spinal cords from wild-type (WT), PC1(-/+) and PC2(-/+) animals and mass spectrometry. Our results clearly demonstrate that both PC1 and PC2 are involved in the proteolysis regulation of BDyn and Dyn A with a more important role for PC1. C-terminal processing of BDyn generates specific peptide fragments dynorphin 1-19, dynorphin 1-13, dynorphin 1-11 and dynorphin 1-7, and C-terminal processing of Dyn A generates dynorphin 1-13, dynorphin 1-11 and dynorphin 1-7, all these peptide fragments are associated with PC1 or PC2 processing. Moreover, the proteolysis of BDyn leads to the formation of Dyn A and Leu-Enk, two important opioid peptides. The rate of formation of both is significantly reduced in cellular fractions of spinal cord mutant mice. As a consequence, even the partial inhibition of PC1 or PC2 may impair the endogenous opioid system.
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Affiliation(s)
- Alberto Ruiz Orduna
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Faculté de Médecine Vétérinaire, Département de Biomédecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Faculté de Médecine Vétérinaire, Département de Biomédecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada.
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Saidi M, Kamali S, Ruiz AO, Beaudry F. Tachykinins Processing is Significantly Impaired in PC1 and PC2 Mutant Mouse Spinal Cord S9 Fractions. Neurochem Res 2015; 40:2304-16. [DOI: 10.1007/s11064-015-1720-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/18/2015] [Accepted: 09/11/2015] [Indexed: 10/23/2022]
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Saidi M, Beaudry F. Liquid chromatography-electrospray linear ion trap mass spectrometry analysis of targeted neuropeptides in Tac1(-/-) mouse spinal cords reveals significant lower concentration of opioid peptides. Neuropeptides 2015; 52:79-87. [PMID: 26072188 DOI: 10.1016/j.npep.2015.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 12/26/2022]
Abstract
Tachykinin and opioid peptides play a central role in pain transmission, modulation and inhibition. The treatment of pain is very important in medicine and many studies using NK1 receptor antagonists failed to show significant analgesic effects in humans. Recent investigations suggest that both pronociceptive tachykinins and the analgesic opioid systems are important for normal pain sensation. The analysis of opioid peptides in Tac1(-/-) spinal cord tissues offers a great opportunity to verify the influence of the tachykinin system on specific opioid peptides. The objectives of this study were to develop an HPLC-MS/MRM assay to quantify targeted peptides in spinal cord tissues. Secondly, we wanted to verify if the Tac1(-/-) mouse endogenous opioid system is hampered and therefore affects significantly the pain modulatory pathways. Targeted neuropeptides were analyzed by high performance liquid chromatography linear ion trap mass spectrometry. Our results reveal that EM-2, Leu-Enk and Dyn A were down-regulated in Tac1(-/-) spinal cord tissues. Interestingly, Dyn A was almost 3 fold down-regulated (p<0.0001). No significant concentration differences were observed in mouse Tac1(-/-) spinal cords for Met-Enk and CGRP. The analysis of Tac1(-/-) mouse spinal cords revealed noteworthy decreases of EM-2, Leu-Enk and Dyn A concentrations which strongly suggest a significant impact on the endogenous pain-relieving mechanisms. These observations may have insightful impact on future analgesic drug developments and therapeutic strategies.
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Affiliation(s)
- Mouna Saidi
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomédecine vétérinaire, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomédecine vétérinaire, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada
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9
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Rialland P, Otis C, Moreau M, Pelletier JP, Martel-Pelletier J, Beaudry F, del Castillo JR, Bertaim T, Gauvin D, Troncy E. Association between sensitisation and pain-related behaviours in an experimental canine model of osteoarthritis. Pain 2014; 155:2071-9. [DOI: 10.1016/j.pain.2014.07.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 06/03/2014] [Accepted: 07/21/2014] [Indexed: 12/20/2022]
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