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Eisenach JC, Curry RS, Houle TT. Preliminary results from a randomized, controlled, cross-over trial of intrathecal oxytocin for neuropathic pain. PAIN MEDICINE (MALDEN, MASS.) 2023; 24:1058-1065. [PMID: 37084261 PMCID: PMC10472486 DOI: 10.1093/pm/pnad051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/04/2023] [Accepted: 04/18/2023] [Indexed: 04/22/2023]
Abstract
OBJECTIVE Compare intrathecal oxytocin, 100 µg to placebo on ongoing neuropathic pain and mechanical hyperalgesia and allodynia. STUDY DESIGN Randomized, controlled, double-blind cross-over. SETTING Clinical research unit. SUBJECTS Individuals aged 18 to 70 years with neuropathic pain for at least 6 months. METHODS Individuals received intrathecal injections of oxytocin and saline, separated by at least 7 days, and ongoing pain in neuropathic area (VAS [visual analog scale]) and areas of hypersensitivity to von Frey filament and cotton wisp brushing were measured for 4 hours. Primary outcome was VAS pain in the first 4 hours after injection, analyzed by linear mixed effects model. Secondary outcomes were verbal pain intensity scores at daily intervals for 7 days and areas of hypersensitivity and elicited pain for 4 hours after injections. RESULTS The study was stopped early after completion of 5 of 40 subjects planned due to slow recruitment and funding limitations. Pain intensity prior to injection was 4.75 ± 0.99 and modeled pain intensity decreased more after oxytocin than placebo to 1.61 ± 0.87 and 2.49 ± 0.87, respectively (P = .003). Daily pain scores were lower in the week following injection of oxytocin than saline (2.53 ± 0.89 vs 3.66 ± 0.89; P = .001). Allodynic area decreased by 11%, but hyperalgesic area increased by 18% after oxytocin compared to placebo. There were no study drug related adverse effects. CONCLUSION Although limited by the small number of subjects studied, oxytocin reduced pain more than placebo in all subjects. Further study of spinal oxytocin in this population is warranted. TRIAL REGISTRATION This study was registered at ClinicalTrials.gov on 03/27/2014 (NCT02100956). The first subject was studied on 06/25/2014.
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Affiliation(s)
- James C Eisenach
- Department of Anesthesiology, Wake Forest University School of Medicine, Winston Salem, NC 27157, United States
| | - Regina S Curry
- Department of Anesthesiology, Wake Forest University School of Medicine, Winston Salem, NC 27157, United States
| | - Timothy T Houle
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA 02441, United States
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2
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Eisenach JC, Shields JS, Weller RS, Curry RS, Langfitt MK, Henshaw DS, Pollock DC, Edwards CJ, Houle TT. Randomized controlled trial of intrathecal oxytocin on speed of recovery after hip arthroplasty. Pain 2023; 164:1138-1147. [PMID: 36448974 PMCID: PMC10106358 DOI: 10.1097/j.pain.0000000000002810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/28/2022] [Indexed: 12/02/2022]
Abstract
ABSTRACT Recovery from surgery is quicker in the postpartum period, and this may reflect oxytocin action in the spinal cord. We hypothesized that intrathecal injection of oxytocin would speed recovery from pain and disability after major surgery. Ninety-eight individuals undergoing elective total hip arthroplasty were randomized to receive either intrathecal oxytocin (100 μg) or saline. Participants completed diaries assessing pain and opioid use daily and disability weekly, and they wore an accelerometer beginning 2 weeks before surgery until 8 weeks after. Groups were compared using modelled, adjusted trajectories of these measures. The study was stopped early due to the lack of funding. Ninety patients received intrathecal oxytocin (n = 44) or saline (n = 46) and were included in the analysis. There were no study drug-related adverse effects. Modelled pain trajectory, the primary analysis, did not differ between the groups, either in pain on day of hospital discharge (intercept: -0.1 [95% CI: -0.8 to 0.6], P = 0.746) or in reductions over time (slope: 0.1 pain units per log of time [95% CI: 0-0.2], P = 0.057). In planned secondary analyses, postoperative opioid use ended earlier in the oxytocin group and oxytocin-treated patients walked nearly 1000 more steps daily at 8 weeks ( P < 0.001) and exhibited a clinically meaningful reduction in disability for the first 21 postoperative days ( P = 0.007) compared with saline placebo. Intrathecal oxytocin before hip replacement surgery does not speed recovery from worst daily pain. Secondary analyses suggest that further study of intrathecal oxytocin to speed functional recovery without worsening pain after surgery is warranted.
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Affiliation(s)
- James C. Eisenach
- Department of Anesthesiology, Wake Forest University School of Medicine (WFUSM), Winston-Salem, NC, USA
| | | | - Robert S. Weller
- Department of Anesthesiology, Wake Forest University School of Medicine (WFUSM), Winston-Salem, NC, USA
| | - Regina S. Curry
- Department of Anesthesiology, Wake Forest University School of Medicine (WFUSM), Winston-Salem, NC, USA
| | | | - Daryl S. Henshaw
- Department of Anesthesiology, Wake Forest University School of Medicine (WFUSM), Winston-Salem, NC, USA
| | | | - Christopher J. Edwards
- Department of Anesthesiology, Wake Forest University School of Medicine (WFUSM), Winston-Salem, NC, USA
| | | | - Timothy T. Houle
- Department of Anesthesiology and Perioperative Medicine, Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA
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3
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Biurrun Manresa JA, Schliessbach J, Vuilleumier PH, Müller M, Musshoff F, Stamer U, Stüber F, Arendt-Nielsen L, Curatolo M. Anti-nociceptive effects of oxytocin receptor modulation in healthy volunteers-A randomized, double-blinded, placebo-controlled study. Eur J Pain 2021; 25:1723-1738. [PMID: 33884702 DOI: 10.1002/ejp.1781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 04/09/2021] [Indexed: 11/11/2022]
Abstract
BACKGROUND There is increasing evidence for oxytocin as a neurotransmitter in spinal nociceptive processes. Hypothalamic oxytocinergic neurons project to the spinal dorsal horn, where they activate GABA-ergic inhibitory interneurons. The present study tested whether the long-acting oxytocin-analogue carbetocin has anti-nociceptive effects in multi-modal experimental pain in humans. METHODS Twenty-five male volunteers received carbetocin 100 mcg and placebo (0.9% NaCl) on two different sessions in a randomized, double-blinded, cross-over design. Multi-modal quantitative sensory testing (QST) including a model of capsaicin-induced hyperalgesia and allodynia were performed at baseline and at 10, 60 and 120 min after drug administration. QST data were analysed using mixed linear and logistic regression models. Carbetocin plasma concentrations and oxytocin receptor genotypes were quantified and assessed in an exploratory fashion. RESULTS An anti-nociceptive effect of carbetocin was observed on intramuscular electrical temporal summation (estimated difference: 1.26 mA, 95% CI 1.01 to 1.56 mA, p = .04) and single-stimulus electrical pain thresholds (estimated difference: 1.21 mA, 95% CI 1.0 to 1.47 mA, p = .05). Furthermore, the area of capsaicin-induced allodynia was reduced after carbetocin compared to placebo (estimated difference: -6.5 cm2 , 95% CI -9.8 to -3.2 cm2 , p < .001). CONCLUSIONS This study provides evidence of an anti-nociceptive effect of carbetocin on experimental pain in humans. SIGNIFICANCE This study provides evidence of the anti-nociceptive effect of intravenous administration of the oxytocin agonist carbetocin in healthy male volunteers.
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Affiliation(s)
- José A Biurrun Manresa
- Center for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.,Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática (IBB), CONICET-UNER, Oro Verde, Argentina
| | - Jürg Schliessbach
- Department of Anesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland.,Institute of Anesthesiology, University Hospital of Zurich, Zurich, Switzerland
| | - Pascal H Vuilleumier
- Department of Anesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland.,Clinic of Anesthesiology, Intensive Care and Pain Medicine, Hirslandenklinik St. Anna, Lucerne, Switzerland
| | - Monika Müller
- Department of Anesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland.,Translational Research Center, University Hospital of Psychiatry, University of Bern, Bern, Switzerland
| | | | - Ulrike Stamer
- Department of Anesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Frank Stüber
- Department of Anesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Lars Arendt-Nielsen
- Center for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Michele Curatolo
- Center for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.,Department of Anesthesiology and Pain Therapy, University of Washington, Seattle, WA, USA
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4
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González-Hernández A, Condés-Lara M, García-Boll E, Villalón CM. An outlook on the trigeminovascular mechanisms of action and side effects concerns of some potential neuropeptidergic antimigraine therapies. Expert Opin Drug Metab Toxicol 2021; 17:179-199. [DOI: 10.1080/17425255.2021.1856366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Miguel Condés-Lara
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Enrique García-Boll
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Carlos M. Villalón
- Departamento de Farmacobiología, Cinvestav-Coapa, Ciudad de México, México
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5
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Chow LH, Chen YH, Lai CF, Lin TY, Chen YJ, Kao JH, Huang EYK. Sex Difference of Angiotensin IV-, LVV-Hemorphin 7-, and Oxytocin-Induced Antiallodynia at the Spinal Level in Mice With Neuropathic Pain. Anesth Analg 2019; 126:2093-2101. [PMID: 29381512 DOI: 10.1213/ane.0000000000002795] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND We demonstrated previously that angiotensin IV (Ang IV) and LVV-hemorphin 7 (LVV-H7) act through the blockade of insulin-regulated aminopeptidase to decrease oxytocin degradation, thereby causing antihyperalgesia at the spinal level in rats. We determined that intrathecal oxytocin can induce significant antihyperalgesia in male rats with inflammation but not in female rats. Thus, we speculate that Ang IV, LVV-H7, and oxytocin can induce antiallodynia, which could be of great therapeutic potential. Because the antihyperalgesia by using these peptides was with sex difference, their possible antiallodynia was examined in male and female mice for comparison. We investigated whether Ang IV, LVV-H7, and oxytocin produce antiallodynia at the spinal level in mice and whether this antiallodynia differs between the sexes. METHODS Partial sciatic nerve ligation surgery was performed on adult male and female C57BL/6 mice from the same litter (25-30 g). The effects of intrathecal injections of Ang IV (25.8 nmol), LVV-H7 (27.2 nmol), and oxytocin (0.125 or 1.25 nmol) were assessed through the von Frey test 3 days after partial sciatic nerve ligation. RESULTS Intrathecal injection of Ang IV, LVV-H7, and oxytocin all produced a potent antiallodynia in male mice. However, these antiallodynia effects were either extremely weak or absent in female mice at the same dose. CONCLUSIONS Intrathecal Ang IV, LVV-H7, and oxytocin can all cause significant antiallodynia in male mice. The Ang IV-, LVV-H7-, and oxytocin-induced antiallodynia effects differed between the sexes at the spinal level in mice.
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Affiliation(s)
- Lok-Hi Chow
- From the Department of Anesthesiology, Taipei Veterans General Hospital, Taipei, Taiwan.,National Yang-Ming University, School of Medicine, Taipei, Taiwan.,Departments of Anesthesiology
| | - Yuan-Hao Chen
- Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chun-Fu Lai
- Department of Family Medicine, Tri-Service General Hospital Songshan Branch, National Defense Medical Center, Taipei, Taiwan
| | - Tsu-You Lin
- Department of Family Medicine, Tri-Service General Hospital Songshan Branch, National Defense Medical Center, Taipei, Taiwan
| | - Ying-Jie Chen
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Jen-Hsin Kao
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Eagle Yi-Kung Huang
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC
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6
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Peripheral oxytocin restores light touch and nociceptor sensory afferents towards normal after nerve injury. Pain 2019; 160:1146-1155. [DOI: 10.1097/j.pain.0000000000001495] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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7
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Gonzalez-Hernandez A, Charlet A. Oxytocin, GABA, and TRPV1, the Analgesic Triad? Front Mol Neurosci 2018; 11:398. [PMID: 30555298 PMCID: PMC6282058 DOI: 10.3389/fnmol.2018.00398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/11/2018] [Indexed: 01/16/2023] Open
Affiliation(s)
- Abimael Gonzalez-Hernandez
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Queretaro, Mexico
| | - Alexandre Charlet
- Centre National de la Recherche Scientifique, Institut des Neurosciences Cellulaires et Intégratives, Strasbourg, France
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8
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Dussor G, Boyd JT, Akopian AN. Pituitary Hormones and Orofacial Pain. Front Integr Neurosci 2018; 12:42. [PMID: 30356882 PMCID: PMC6190856 DOI: 10.3389/fnint.2018.00042] [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: 08/08/2018] [Accepted: 09/06/2018] [Indexed: 12/15/2022] Open
Abstract
Clinical and basic research on regulation of pituitary hormones, extra-pituitary release of these hormones, distribution of their receptors and cell signaling pathways recruited upon receptor binding suggests that pituitary hormones can regulate mechanisms of nociceptive transmission in multiple orofacial pain conditions. Moreover, many pituitary hormones either regulate glands that produce gonadal hormones (GnH) or are regulated by GnH. This implies that pituitary hormones may be involved in sex-dependent mechanisms of orofacial pain and could help explain why certain orofacial pain conditions are more prevalent in women than men. Overall, regulation of nociception by pituitary hormones is a relatively new and emerging area of pain research. The aims of this review article are to: (1) present an overview of clinical conditions leading to orofacial pain that are associated with alterations of serum pituitary hormone levels; (2) discuss proposed mechanisms of how pituitary hormones could regulate nociceptive transmission; and (3) outline how pituitary hormones could regulate nociception in a sex-specific fashion. Pituitary hormones are routinely used for hormonal replacement therapy, while both receptor antagonists and agonists are used to manage certain pathological conditions related to hormonal imbalance. Administration of these hormones may also have a place in the treatment of pain, including orofacial pain. Hence, understanding the involvement of pituitary hormones in orofacial pain, especially sex-dependent aspects of such pain, is essential to both optimize current therapies as well as provide novel and sex-specific pharmacology for a diversity of associated conditions.
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Affiliation(s)
- Gregory Dussor
- School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Jacob T Boyd
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Armen N Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.,Department of Pharmcology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
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9
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Boll S, Almeida de Minas A, Raftogianni A, Herpertz S, Grinevich V. Oxytocin and Pain Perception: From Animal Models to Human Research. Neuroscience 2018; 387:149-161. [DOI: 10.1016/j.neuroscience.2017.09.041] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/14/2017] [Accepted: 09/24/2017] [Indexed: 11/24/2022]
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10
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Severino AL, Chen R, Hayashida K, Aschenbrenner CA, Sun H, Peters CM, Gutierrez S, Pan B, Eisenach JC. Plasticity and Function of Spinal Oxytocin and Vasopressin Signaling during Recovery from Surgery with Nerve Injury. Anesthesiology 2018; 129:544-556. [PMID: 29912007 PMCID: PMC6092206 DOI: 10.1097/aln.0000000000002290] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
WHAT WE ALREADY KNOW ABOUT THIS TOPIC WHAT THIS ARTICLE TELLS US THAT IS NEW: BACKGROUND:: Recovery from pain after surgery is faster after cesarean delivery than after other abdominal procedures. The authors hypothesized that recovery in rats after surgery could be reversed by antagonism of spinal oxytocin or vasopressin receptors, that there may be a sex difference, and that spinal oxytocin innervation could change after surgery. METHODS Male and female rats underwent partial spinal nerve ligation surgery. Effects of nonselective and selective oxytocin and vasopressin 1A receptor antagonists on mechanical hypersensitivity during partial recovery were assessed (n = 8 to 14/group). Oxytocin immunoreactivity in the dorsal horn of the spinal cord (n = 7 to 8/group) and messenger RNA (mRNA) expression for oxytocin-binding receptors in dorsal root ganglia and spinal cord (n = 8/group) were measured. RESULTS Intrathecal injection of oxytocin and vasopressin receptor antagonists were similarly effective at reducing withdrawal threshold (in all experiments from 22 [19, 26] median [first quartile, third quartile]) g to 8.3 [6.4, 12] g after injection) in both sexes, while having no or minimal effects in animals without surgery. Oxytocin fiber immunoreactivity was 3- to 5-fold greater in lumbar than other regions of the spinal cord and was increased more than 2-fold in lumbar cord ipsilateral to surgery. Injury was also associated with a 6.5-fold increase in oxytocin receptor and a 2-fold increase in vasopressin 1A receptor messenger RNA expression in the L4 dorsal root ganglion ipsilateral to surgery. CONCLUSIONS These findings suggest that the capacity for oxytocin signaling in the spinal cord increases after surgery and that spinal oxytocin signaling plays ongoing roles in both sexes in recovery from mechanical hypersensitivity after surgery with known nerve injury.
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Affiliation(s)
- Amie L. Severino
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Rong Chen
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Kenichiro Hayashida
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | | | - Haiguo Sun
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Christopher M. Peters
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Silvia Gutierrez
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Bethany Pan
- Department of School of Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - James C. Eisenach
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
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11
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Schuh-Hofer S, Eichhorn N, Grinevich V, Treede RD. Sleep Deprivation Related Changes of Plasma Oxytocin in Males and Female Contraceptive Users Depend on Sex and Correlate Differentially With Anxiety and Pain Hypersensitivity. Front Behav Neurosci 2018; 12:161. [PMID: 30116181 PMCID: PMC6082934 DOI: 10.3389/fnbeh.2018.00161] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/09/2018] [Indexed: 02/05/2023] Open
Abstract
Disturbed sleep is known to substantially aggravate both the pain condition and the affective state of pain patients. The neurobiological mechanisms underlying these adverse effects are unknown. Oxytocin (OT), being largely involved in social and emotional behavior, is considered to also play a modulatory role in nociception. We hypothesized a pathophysiological role of OT for the hyperalgesic and anxiogenic effects of sleep loss. An established human model of one night of total sleep deprivation (TSD) was used to test this hypothesis. Twenty young healthy students (n = 10 male and n = 10 female) were investigated in a balanced cross-over design, contrasting TSD with a night of habitual sleep (HS). All females took monophasic oral contraceptives (OC) and were investigated during their ‘pill-free’ phase. Plasma OT concentrations were correlated with (1) pain thresholds, (2) descending pain inhibition, and (3) state-anxiety scores. Compared to the HS condition, the plasma OT concentration was significantly increased in sleep deprived females (p = 0.02) but not males (p = 0.69). TSD resulted in pain hypersensitivity to noxious cold (p = 0.05), noxious heat (p = 0.023), and pricking stimuli (p = 0.013) and significantly increased state-anxiety (p = 0.021). While, independent of sex, lower heat pain thresholds correlated with higher plasma OT (p = 0.036), no such associations were found for cold/mechanical pain. In sleep-deprived females, higher plasma OT showed a mild (but insignificant) association with lower pain inhibition (p = 0.093). We found a positive correlation between anxiety-scores and OT (p = 0.021), which was enhanced when respecting “sex” (p = 0.008) and “sleep” (p = 0.001) in a hierarchical regression analysis. Altogether, our study revealed a complex and partially sex-dependent correlation between plasma OT and TSD-induced changes of experimental pain and anxiety. The minor role of OT for TSD-induced changes of evoked pain, and its major involvement in anxiety, argues against a specific role of OT for linking the adverse effects of TSD on pain sensitivity and anxiety with each other. Future investigations are needed in order to dissect out the effect of OC on the sex-dependent effects of TSD observed in our study.
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Affiliation(s)
- Sigrid Schuh-Hofer
- Department of Neurophysiology, Centre of Biomedicine and Medical Technology Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Clinic for Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Nicole Eichhorn
- Department of Neurophysiology, Centre of Biomedicine and Medical Technology Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Valery Grinevich
- Schaller Research Group on Neuropeptides, German Cancer Research Center, Heidelberg and Central Institute of Mental Health, Mannheim, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Centre of Biomedicine and Medical Technology Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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12
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Wolfe M, Wisniewska H, Tariga H, Ibanez G, Collins JC, Wisniewski K, Qi S, Srinivasan K, Hargrove D, Lindstrom BF. Selective and non-selective OT receptor agonists induce different locomotor behaviors in male rats via central OT receptors and peripheral V1a receptors. Neuropeptides 2018; 70:64-75. [PMID: 29807652 DOI: 10.1016/j.npep.2018.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 05/18/2018] [Accepted: 05/19/2018] [Indexed: 10/16/2022]
Abstract
Oxytocin (OT) continues to inspire much research due to its diverse physiological effects. While the best-understood actions of OT are uterine contraction and milk ejection, OT is also implicated in maternal and bonding behaviors, and potentially in CNS disorders such as autism, schizophrenia, and pain. The dissection of the mechanism of action of OT is complicated by the fact that this peptide activates not only its cognate receptor but also vasopressin type 1a (V1a) receptors. In this study, we evaluated OT and a selective OT receptor (OTR) agonist, FE 204409, in an automated assay that measures rat locomotor activity. The results showed: 1) Subcutaneous (sc) administration of OT decreased locomotor behavior (distance traveled, stereotypy, and rearing). This effect was reversed by a V1a receptor (V1aR) antagonist ([Pmp1,Tyr(ME)2]AVP, sc), suggesting that OT acts through peripheral V1aR to inhibit locomotor activity. 2) A selective OTR agonist (FE 204409, sc) increased stereotypy. This effect was reversed by an OTR antagonist dosed icv, suggesting a central OTR site of action. Our findings identify distinct behavioral effects for OT and the selective agonist FE 204409, adding to the growing body of evidence that the V1aR mediates many effects attributed to OT and that peptides administered systemically at supra-physiological doses may activate receptors in the brain. Our studies further emphasize the importance of utilizing selective agonists and antagonists to assess therapeutic indications.
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Affiliation(s)
- Monica Wolfe
- Ferring Research Institute, Inc, San Diego, CA, United States
| | | | - Hiroe Tariga
- Ferring Research Institute, Inc, San Diego, CA, United States
| | - Gerardo Ibanez
- Ferring Research Institute, Inc, San Diego, CA, United States
| | - James C Collins
- Ferring Research Institute, Inc, San Diego, CA, United States
| | | | - Steve Qi
- Ferring Research Institute, Inc, San Diego, CA, United States
| | | | - Diane Hargrove
- Ferring Research Institute, Inc, San Diego, CA, United States
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13
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Dhar D, Poree LR, Yaksh TL. Evolution of the Spinal Delivery of Opiate Analgesics. Neuromodulation 2018. [DOI: 10.1016/b978-0-12-805353-9.00065-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Exploring Nonopioid Analgesic Agents for Intrathecal Use. Neuromodulation 2018. [DOI: 10.1016/b978-0-12-805353-9.00068-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Abstract
BACKGROUND Over the years the effect of the neuropeptide oxytocin and its possible utilization for pain management has been increasingly more investigated and discussed. Initial results emphasized the effects of oxytocin with respect to labor and breastfeeding. Diverse animals studies were also able to demonstrate the effectiveness of the peptide in attachment behavior and pain perception; however, it is still unclear how oxytocin affects pain perception in humans. The potential therapeutic effectiveness of oxytocin could be particularly important for primary and secondary treatment of pain patients because chronification of pain can occur more frequently in this area. METHODS For this review the databases PubMed, Medline und PsycINFO were searched using the terms oxytocin, pain, human and analgesic. The search resulted in a total of 89 original articles after excluding articles regarding labor pain, breastfeeding and animal studies. Only those studies were included which were carried out between 1994 and 2015. A total of 17 articles remained for inclusion in this review and included 13 studies on the exogenous application of oxytocin and 4 on measurement of oxytocin levels in plasma. CONCLUSION This review article gives a summary of the current state of research on oxytocin and its direct and indirect association with human pain perception and emphasizes its relevance for the multimodal management of pain.
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Affiliation(s)
- A-C Pfeifer
- Tagesklinik für Schmerztherapie, Konservative Orthopädie, Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Schlierbacher Landstr. 200a, 69118, Heidelberg, Deutschland.
| | - B Ditzen
- Institut für Medizinische Psychologie, Zentrum für Psychosoziale Medizin (ZPM), Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - E Neubauer
- Tagesklinik für Schmerztherapie, Konservative Orthopädie, Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Schlierbacher Landstr. 200a, 69118, Heidelberg, Deutschland
| | - M Schiltenwolf
- Tagesklinik für Schmerztherapie, Konservative Orthopädie, Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Schlierbacher Landstr. 200a, 69118, Heidelberg, Deutschland
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16
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Condés-Lara M, Zayas-González H, Manzano-García A, Córdova-Quiroz E, Granados-Mortera J, García-Cuevas M, Morales-Gómez J, González-Hernández A. Successful Pain Management with Epidural Oxytocin. CNS Neurosci Ther 2016; 22:532-4. [PMID: 27080720 DOI: 10.1111/cns.12551] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 11/26/2022] Open
Affiliation(s)
- Miguel Condés-Lara
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Héctor Zayas-González
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México.,Hospital Regional de Petróleos Mexicanos, Salamanca, Guanajuato, México
| | - Alfredo Manzano-García
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | | | | | | | | | - Abimael González-Hernández
- Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
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17
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Paloyelis Y, Krahé C, Maltezos S, Williams SC, Howard MA, Fotopoulou A. The Analgesic Effect of Oxytocin in Humans: A Double-Blind, Placebo-Controlled Cross-Over Study Using Laser-Evoked Potentials. J Neuroendocrinol 2016; 28:10.1111/jne.12347. [PMID: 26660859 PMCID: PMC5103211 DOI: 10.1111/jne.12347] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 12/04/2015] [Accepted: 12/05/2015] [Indexed: 12/29/2022]
Abstract
Oxytocin is a neuropeptide regulating social-affiliative and reproductive behaviour in mammals. Despite robust preclinical evidence for the antinociceptive effects and mechanisms of action of exogenous oxytocin, human studies have produced mixed results regarding the analgesic role of oxytocin and are yet to show a specific modulation of neural processes involved in pain perception. In the present study, we investigated the analgesic effects of 40 IU of intranasal oxytocin in 13 healthy male volunteers using a double-blind, placebo-controlled, cross-over design and brief radiant heat pulses generated by an infrared laser that selectively activate Aδ- and C-fibre nerve endings in the epidermis, at the same time as recording the ensuing laser-evoked potentials (LEPs). We predicted that oxytocin would reduce subjective pain ratings and attenuate the amplitude of the N1, N2 and P2 components. We observed that oxytocin attenuated perceived pain intensity and the local peak amplitude of the N1 and N2 (but not of P2) LEPs, and increased the latency of the N2 component. Importantly, for the first time, the present study reports an association between the analgesic effect of oxytocin (reduction in subjective pain ratings) and the oxytocin-induced modulation of cortical activity after noxious stimulation (attenuation of the N2 LEP). These effects indicate that oxytocin modulates neural processes contributing to pain perception. The present study reports preliminary evidence that is consistent with electrophysiological studies in rodents showing that oxytocin specifically modulates Aδ/C-fibre nociceptive afferent signalling at the spinal level and provides further specificity to evidence obtained in humans indicating that oxytocin may be modulating pain experience by modulating activity in the cortical areas involved in pain processing.
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Affiliation(s)
- Y Paloyelis
- Department of Neuroimaging, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - C Krahé
- Department of Neuroimaging, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - S Maltezos
- Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, King's College London, London, UK
| | - S C Williams
- Department of Neuroimaging, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - M A Howard
- Department of Neuroimaging, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - A Fotopoulou
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
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