1
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Brockway K, Ahmed S. Beyond breathing: Systematic review of global chronic obstructive pulmonary disease guidelines for pain management. Respir Med 2024; 224:107553. [PMID: 38350512 DOI: 10.1016/j.rmed.2024.107553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/15/2024]
Abstract
CONTEXT Patients with chronic obstructive pulmonary disease (COPD) experience pain as both symptom and comorbidity. There has been no evaluation of the recommendations for pain management in updated clinical practice guidelines (CPGs). OBJECTIVES Update the evidence on pain management, determine alignment of pain management recommendations with best-practice, and advocate for optimal pain management in patients with COPD. METHODS PubMed, Guideline International Network, Guideline Portal, Agency for Healthcare Research and Quality, National Institute for Healthcare Excellence, Scottish International Guidelines Network, Institute of Medicine, grey literature, national websites, and bibliographies were searched. CPGs available online for stable COPD produced by organizations representing reputable knowledge of COPD management were included. CPGs unavailable online, not translatable into English, or not including techniques within the defined scope were excluded. Researchers performed frequency counts for the verbatim terms "pain," "physical activity," "exercise," "rehabilitation," "physical therap(ist)/(y), "physiotherap(ist)/(y)," recorded context, and collected recommendations for pain management/treatment when present. RESULTS Of 32 CPGs, 24 included "pain" verbatim. Of these, 13 included recommendations for pain treatment/management. Common recommendations included opioids, pharmacological management, further medical assessment, and surgical intervention. Two CPGs referred to palliative care, one CPG discussed treating cough, and one discussed massage, relaxation, and breathing. CONCLUSIONS Pain management recommendations vary and are not aligned with evidence. Pain should be addressed in patients with COPD, whether directly or indirectly related to the disease. Reduction of variability in pain management and the disease burden is necessary. Pain management should include referrals to providers who can maximize benefit of their services.
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Affiliation(s)
- Kaelee Brockway
- University of St. Augustine for Health Sciences, 901 W. Walnut Hill Ln, Ste 210, Irving, TX, USA.
| | - Shakeel Ahmed
- University of Florida, College of Public Health & Health Professions, Department of Physical Therapy, Box 100154, UFHSC, Gainesville, FL, 32610-0154, USA.
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2
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Bordoni B, Escher A. Pericardial Adhesion and Chronic Non-Specific Neck Pain following Thoracentesis: An Osteopathic Approach. Clin Pract 2023; 13:1313-1318. [PMID: 37987418 PMCID: PMC10660830 DOI: 10.3390/clinpract13060117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/15/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death globally. Morbidity and disability related to non-fatal events are increasing exponentially. There are several symptoms that may arise after invasive therapeutic approaches such as coronary artery bypass graft (CABG), including chronic pain in anatomical areas connected to the mediastinum; these pains can be found not only initially after surgery but also years later. We present a case where non-specific neck pain (NNP), in a patient undergoing CABG five years earlier, was resolved with an osteopathic technique, working the pericardial area. To the knowledge of the authors, it is the first article illustrating an osteopathic approach with resolution of NNP, with a manual technique used on the pericardial area.
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Affiliation(s)
- Bruno Bordoni
- Department of Cardiology, Foundation Don Carlo Gnocchi Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Institute of Hospitalization and Care, S Maria Nascente, Via Capecelatro 66, 20100 Milan, Italy
| | - Allan Escher
- Anesthesiology/Pain Medicine, H. Lee Moffitt Cancer Center and Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA;
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3
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Luo HM, Ye JR, Pu FQ, Luo HL, Zhang WJ. Role and therapeutic target of P2X2/3 receptors in visceral pain. Neuropeptides 2023; 101:102355. [PMID: 37390743 DOI: 10.1016/j.npep.2023.102355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/02/2023]
Abstract
Visceral pain (VP) is caused by internal organ disease. VP is involved in nerve conduction and related signaling molecules, but its specific pathogenesis has not yet been fully elucidated. Currently, there are no effective methods for treating VP. The role of P2X2/3 in VP has progressed. After visceral organs are subjected to noxious stimulation, cells release ATP, activate P2X2/3, enhance the sensitivity of peripheral receptors and the plasticity of neurons, enhance sensory information transmission, sensitize the central nervous system, and play an important role in the development of VP. However, antagonists possess the pharmacological effect of relieving pain. Therefore, in this review, we summarize the biological functions of P2X2/3 and discuss the intrinsic link between P2X2/3 and VP. Moreover, we focus on the pharmacological effects of P2X2/3 antagonists on VP therapy and provide a theoretical basis for its targeted therapy.
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Affiliation(s)
- Hong-Mei Luo
- Department of Rheumatology, The Affiliated Hospital of Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province 343000, China
| | - Jia-Rong Ye
- Department of Gastrointestinal surgery, The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi province 343000, China
| | - Fan-Qin Pu
- Department of Rheumatology, The Affiliated Hospital of Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province 343000, China
| | - Hong-Liang Luo
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi province 343000, China
| | - Wen-Jun Zhang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi province 343000, China.
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4
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Alcayaga J, Vera J, Reyna-Jeldes M, Covarrubias AA, Coddou C, Díaz-Jara E, Del Rio R, Retamal MA. Activation of Intra-nodose Ganglion P2X7 Receptors Elicit Increases in Neuronal Activity. Cell Mol Neurobiol 2023:10.1007/s10571-023-01318-8. [PMID: 36680690 DOI: 10.1007/s10571-023-01318-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 01/05/2023] [Indexed: 01/22/2023]
Abstract
Vagus nerve innervates several organs including the heart, stomach, and pancreas among others. Somas of sensory neurons that project through the vagal nerve are located in the nodose ganglion. The presence of purinergic receptors has been reported in neurons and satellite glial cells in several sensory ganglia. In the nodose ganglion, calcium depletion-induced increases in neuron activity can be partly reversed by P2X7 blockers applied directly into the ganglion. The later suggest a possible role of P2X7 receptors in the modulation of neuronal activity within this sensory ganglion. We aimed to characterize the response to P2X7 activation in nodose ganglion neurons under physiological conditions. Using an ex vivo preparation for electrophysiological recordings of the neural discharges of nodose ganglion neurons, we found that treatments with ATP induce transient neuronal activity increases. Also, we found a concentration-dependent increase in neural activity in response to Bz-ATP (ED50 = 0.62 mM, a selective P2X7 receptor agonist), with a clear desensitization pattern when applied every ~ 30 s. Electrophysiological recordings from isolated nodose ganglion neurons reveal no differences in the responses to Bz-ATP and ATP. Finally, we showed that the P2X7 receptor was expressed in the rat nodose ganglion, both in neurons and satellite glial cells. Additionally, a P2X7 receptor negative allosteric modulator decreased the duration of Bz-ATP-induced maximal responses without affecting their amplitude. Our results show the presence of functional P2X7 receptors under physiological conditions within the nodose ganglion of the rat, and suggest that ATP modulation of nodose ganglion activity may be in part mediated by the activation of P2X7 receptors.
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Affiliation(s)
- Julio Alcayaga
- Laboratorio de Fisiología Celular, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile. .,Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile.
| | - Jorge Vera
- Laboratorio de Fisiología Celular, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Mauricio Reyna-Jeldes
- Laboratorio de Señalización Purinérgica, Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile.,Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile
| | - Alejandra A Covarrubias
- Laboratorio de Señalización Purinérgica, Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile.,Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile
| | - Claudio Coddou
- Laboratorio de Señalización Purinérgica, Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile.,Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile
| | - Esteban Díaz-Jara
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo Del Rio
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE-UC), Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile
| | - Mauricio A Retamal
- Universidad de Desarrollo, Programa de Comunicación Celular en Cáncer. Facultad de Medicina Clínica Alemana., Santiago, Chile. .,Universidad del Desarrollo. , Centro de Fisiología Celular e Integrativa, Clínica Alemana Facultad de Medicina., Santiago, Chile.
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5
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Dong CR, Zhang WJ, Luo HL. Association between P2X3 receptors and neuropathic pain: As a potential therapeutic target for therapy. Biomed Pharmacother 2022; 150:113029. [PMID: 35489283 DOI: 10.1016/j.biopha.2022.113029] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 11/02/2022] Open
Abstract
Neuropathic pain is a common clinical symptom of various diseases, and it seriously affects the physical and mental health of patients. Owing to the complex pathological mechanism of neuropathic pain, clinical treatment of pain is challenging. Therefore, there is growing interest among researchers to explore potential therapeutic strategies for neuropathic pain. A large number of studies have shown that development of neuropathic pain is related to nerve conduction and related signaling molecules. P2X3 receptors (P2X3R) are ATP-dependent ion channels that participate in the transmission of neural information and related signaling pathways, sensitize the central nervous system, and play a key role in the development of neuropathic pain. In this paper, we summarized the structure and biological characteristics of the P2X3R gene and discussed the role of P2X3R in the nervous system. Moreover, we outlined the related pathological mechanisms of pain and described the relationship between P2X3R and chronic pain to provide valuable information for development of novel treatment strategies for pain.
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Affiliation(s)
- Cai-Rong Dong
- The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 343000, China
| | - Wen-Jun Zhang
- The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 343000, China.
| | - Hong-Liang Luo
- The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 343000, China
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6
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Kim SH, Patil MJ, Hadley SH, Bahia PK, Butler SG, Madaram M, Taylor-Clark TE. Mapping of the Sensory Innervation of the Mouse Lung by Specific Vagal and Dorsal Root Ganglion Neuronal Subsets. eNeuro 2022; 9:ENEURO.0026-22.2022. [PMID: 35365503 PMCID: PMC9015009 DOI: 10.1523/eneuro.0026-22.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/10/2022] [Accepted: 03/26/2022] [Indexed: 11/21/2022] Open
Abstract
The airways are densely innervated by sensory afferent nerves, whose activation regulates respiration and triggers defensive reflexes (e.g., cough, bronchospasm). Airway innervation is heterogeneous, and distinct afferent subsets have distinct functional responses. However, little is known of the innervation patterns of subsets within the lung. A neuroanatomical map is critical for understanding afferent activation under physiological and pathophysiological conditions. Here, we quantified the innervation of the mouse lung by vagal and dorsal root ganglion (DRG) sensory subsets defined by the expression of Pirt (all afferents), 5HT3 (vagal nodose afferents), Tac1 (tachykinergic afferents), and transient receptor potential vanilloid 1 channel (TRPV1; defensive/nociceptive afferents) using Cre-mediated reporter expression. We found that vagal afferents innervate almost all conducting airways and project into the alveolar region, whereas DRG afferents only innervate large airways. Of the two vagal ganglia, only nodose afferents project into the alveolar region, but both nodose and jugular afferents innervate conducting airways throughout the lung. Many afferents that project into the alveolar region express TRPV1. Few DRG afferents expressed TRPV1. Approximately 25% of blood vessels were innervated by vagal afferents (many were Tac1+). Approximately 10% of blood vessels had DRG afferents (some were Tac1+), but this was restricted to large vessels. Lastly, innervation of neuroepithelial bodies (NEBs) correlated with the cell number within the bodies. In conclusion, functionally distinct sensory subsets have distinct innervation patterns within the conducting airways, alveoli and blood vessels. Physiologic (e.g., stretch) and pathophysiological (e.g., inflammation, edema) stimuli likely vary throughout these regions. Our data provide a neuroanatomical basis for understanding afferent responses in vivo.
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Affiliation(s)
- Seol-Hee Kim
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Mayur J Patil
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Stephen H Hadley
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Parmvir K Bahia
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Shane G Butler
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Meghana Madaram
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
| | - Thomas E Taylor-Clark
- Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612
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7
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Domnik NJ, Vincent SG, Fisher JT. Mechanosensitivity of Murine Lung Slowly Adapting Receptors: Minimal Impact of Chemosensory, Serotonergic, and Purinergic Signaling. Front Physiol 2022; 13:833665. [PMID: 35250636 PMCID: PMC8889033 DOI: 10.3389/fphys.2022.833665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
Murine slowly adapting receptors (SARs) within airway smooth muscle provide volume-related feedback; however, their mechanosensitivity and morphology are incompletely characterized. We explored two aspects of SAR physiology: their inherent static mechanosensitivity and a potential link to pulmonary neuroepithelial bodies (NEBs). SAR mechanosensitivity displays a rate sensitivity linked to speed of inflation; however, to what extent static SAR mechanosensitivity is tuned for the very rapid breathing frequency (B f ) of small mammals (e.g., mouse) is unclear. NEB-associated, morphologically described smooth muscle-associated receptors (SMARs) may be a structural analog for functionally characterized SARs, suggesting functional linkages between SARs and NEBs. We addressed the hypotheses that: (1) rapid murine B f is associated with enhanced in vivo SAR static sensitivity; (2) if SARs and NEBs are functionally linked, stimuli reported to impact NEB function would alter SAR mechanosensitivity. We measured SAR action potential discharge frequency (AP f, action potentials/s) during quasi-static inflation [0-20 cmH2O trans-respiratory pressure (PTR)] in NEB-relevant conditions of hypoxia (FIO2 = 0.1), hypercarbia (FICO2 = 0.1), and pharmacologic intervention (serotonergic 5-HT3 receptor antagonist, Tropisetron, 4.5 mg/kg; P2 purinergic receptor antagonist, Suramin, 50 mg/kg). In all protocols, we obtained: (1) AP f vs. PTR; (2) PTR threshold; and (3) AP f onset at PTR threshold. The murine AP f vs. PTR response comprises high AP f (average maximum AP f: 236.1 ± 11.1 AP/s at 20 cmH2O), a low PTR threshold (mean 2.0 ± 0.1 cmH2O), and a plateau in AP f between 15 and 20 cmH2O. Murine SAR mechanosensitivity (AP f vs. PTR) is up to 60% greater than that reported for larger mammals. Even the maximum difference between intervention and control conditions was minimally impacted by NEB-related alterations: Tropisetron -7.6 ± 1.8% (p = 0.005); Suramin -10.6 ± 1.5% (p = 0.01); hypoxia +9.3 ± 1.9% (p < 0.001); and hypercarbia -6.2 ± 0.9% (p < 0.001). We conclude that the high sensitivity of murine SARs to inflation provides enhanced resolution of operating lung volume, which is aligned with the rapid B f of the mouse. We found minimal evidence supporting a functional link between SARs and NEBs and speculate that the <10% change in SAR mechanosensitivity during altered NEB-related stimuli is not consistent with a meaningful physiologic role.
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Affiliation(s)
- Nicolle J. Domnik
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Sandra G. Vincent
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
| | - John T. Fisher
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
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Abstract
This chapter broadly reviews cardiopulmonary sympathetic and vagal sensors and their reflex functions during physiologic and pathophysiologic processes. Mechanosensory operating mechanisms, including their central projections, are described under multiple sensor theory. In addition, ways to interpret evidence surrounding several controversial issues are provided, with detailed reasoning on how conclusions are derived. Cardiopulmonary sensory roles in breathing control and the development of symptoms and signs and pathophysiologic processes in cardiopulmonary diseases (such as cough and neuroimmune interaction) also are discussed.
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Affiliation(s)
- Jerry Yu
- Department of Medicine (Pulmonary), University of Louisville, and Robley Rex VA Medical Center, Louisville, KY, United States.
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9
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Su Y, Barr J, Jaquish A, Xu J, Verheyden JM, Sun X. Identification of lung innervating sensory neurons and their target specificity. Am J Physiol Lung Cell Mol Physiol 2022; 322:L50-L63. [PMID: 34755535 PMCID: PMC8721910 DOI: 10.1152/ajplung.00376.2021] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Known as the gas exchange organ, the lung is also critical for responding to the aerosol environment in part through interaction with the nervous system. The diversity and specificity of lung innervating neurons remain poorly understood. Here, we interrogated the cell body location and molecular signature and projection pattern of lung innervating sensory neurons. Retrograde tracing from the lung coupled with whole tissue clearing highlighted neurons primarily in the vagal ganglia. Centrally, they project specifically to the nucleus of the solitary tract in the brainstem. Peripherally, they enter the lung alongside branching airways. Labeling of nociceptor Trpv1+ versus peptidergic Tac1+ vagal neurons showed shared and distinct terminal morphology and targeting to airway smooth muscles, vasculature including lymphatics, and alveoli. Notably, a small population of vagal neurons that are Calb1+ preferentially innervate pulmonary neuroendocrine cells, a demonstrated airway sensor population. This atlas of lung innervating neurons serves as a foundation for understanding their function in lung.
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Affiliation(s)
- Yujuan Su
- 1Department of Pediatrics, University of California, San Diego, California
| | - Justinn Barr
- 1Department of Pediatrics, University of California, San Diego, California
| | - Abigail Jaquish
- 1Department of Pediatrics, University of California, San Diego, California
| | - Jinhao Xu
- 1Department of Pediatrics, University of California, San Diego, California
| | - Jamie M. Verheyden
- 1Department of Pediatrics, University of California, San Diego, California
| | - Xin Sun
- 1Department of Pediatrics, University of California, San Diego, California,2Division of Biological Sciences, University of California, San Diego, California
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Pelleg A, Xu F, Zhuang J, Undem B, Burnstock G. DT-0111: a novel drug-candidate for the treatment of COPD and chronic cough. Ther Adv Respir Dis 2020; 13:1753466619877960. [PMID: 31558105 PMCID: PMC6767719 DOI: 10.1177/1753466619877960] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background: Extracellular adenosine 5′-triphosphate (ATP) plays important mechanistic
roles in pulmonary disorders in general and chronic obstructive pulmonary
disease (COPD) and cough in particular. The effects of ATP in the lungs are
mediated to a large extent by P2X2/3 receptors (P2X2/3R) localized on vagal
sensory nerve terminals (both C and Aδ fibers). The activation of these
receptors by ATP triggers a pulmonary-pulmonary central reflex, which
results in bronchoconstriction and cough, and is also proinflammatory due to
the release of neuropeptides from these nerve terminals via
the axon reflex. These actions of ATP in the lungs constitute a strong
rationale for the development of a new class of drugs targeting P2X2/3R.
DT-0111 is a novel, small, water-soluble molecule that acts as an antagonist
at P2X2/3R sites. Methods: Experiments using receptor-binding functional assays, rat nodose ganglionic
cells, perfused innervated guinea pig lung preparation ex
vivo, and anesthetized and conscious guinea pigs in
vivo were performed. Results: DT-0111 acted as a selective and effective antagonist at P2X2/3R, that is, it
did not activate or block P2YR; markedly inhibited the activation by ATP of
nodose pulmonary vagal afferents in vitro; and, given as an
aerosol, inhibited aerosolized ATP-induced bronchoconstriction and cough
in vivo. Conclusions: These results indicate that DT-0111 is an attractive drug-candidate for the
treatment of COPD and chronic cough, both of which still constitute major
unmet clinical needs. The reviews of this paper are available via the supplementary
material section.
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Affiliation(s)
- Amir Pelleg
- Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA 19102, USA.,Danmir Therapeutics, LLC, Haverford, PA, USA
| | - Fadi Xu
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Jianguo Zhuang
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Bradley Undem
- Johns Hopkins University Asthma Center, Baltimore, MD, USA
| | - Geoffrey Burnstock
- Department of Pharmacology and Therapeutics, The University of Melbourne, Parkville, Victoria, Australia.,Autonomic Neuroscience Institute, Royal Free and University College Medical School, London, UK
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11
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Zhang WJ, Xu J, Xiong MJ, Liu ZX, Zhu ZM. Transplantation of microencapsulated olfactory ensheathing cells inhibits the P2X2 receptor over-expressionmediated neuropathic pain in the L4-5 spinal cord segment. Int J Neurosci 2020; 130:976-982. [PMID: 31914345 DOI: 10.1080/00207454.2020.1713775] [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: 10/25/2022]
Abstract
OBJECTIVES The purpose of this study was to determine the effect of microencapsulated olfactory ensheathing cells (MC-OECs) transplantation on neuropathic pain (NPP) caused by sciatic nerve injury in rats, and its relationship with the expression levels of P2X2 receptor (P2X2R) in the L4-5 spinal cord segment. METHODS Olfactory bulb tissue was removed from a healthy Sprague-Dawley (SD) rat for culturing olfactory ensheathing cells (OECs). Forty-eight SD rats were randomly divided into four groups (12 per group): the sham, chronic constriction injury (CCI), olfactory ensheathing cells (OECs), and MC-OECs groups. On days 7 and 14 after surgery, the mechanical withdrawal thresholds (MWT) were measured by using behavioral method. The expression levels of P2X2R in the L4-5 spinal cord segment were detected by in situ hybridization and Western blotting. RESULTS On days 7 and 14 post-surgical, the MWT of rats from high to low were the sham, MC-OECs, OECs, and CCI groups, the MWT of rats in the MC-OECs groups were higher than that in OECs groups. The expression levels of P2X2R in the L4-5 spinal cord segment from high to low were the CCI, OECs, MC-OECs, and sham groups, the expression levels of P2X2R were lower than that in OECs groups. All differences between groups were statistically significant (p value <.05). CONCLUSIONS OECs and MC-OECs transplantation can reduce the expression levels of P2X2R genes in the L4-5 spinal cord segment, and relieve NPP. The therapeutic efficacy of MC-OECs transplantation was better than the transplantation of OECs.
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Affiliation(s)
- Wen-Jun Zhang
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, China
| | - Jian Xu
- Ultrasound Department of Affiliated Hospital of Maternal, Child Health Hospital of Nantong University, Nantong City, Jiangsu Province, China
| | - Mei-Juan Xiong
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, China
| | - Zeng-Xu Liu
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, China
| | - Zheng-Ming Zhu
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, China
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12
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Vallon V, Unwin R, Inscho EW, Leipziger J, Kishore BK. Extracellular Nucleotides and P2 Receptors in Renal Function. Physiol Rev 2019; 100:211-269. [PMID: 31437091 DOI: 10.1152/physrev.00038.2018] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The understanding of the nucleotide/P2 receptor system in the regulation of renal hemodynamics and transport function has grown exponentially over the last 20 yr. This review attempts to integrate the available data while also identifying areas of missing information. First, the determinants of nucleotide concentrations in the interstitial and tubular fluids of the kidney are described, including mechanisms of cellular release of nucleotides and their extracellular breakdown. Then the renal cell membrane expression of P2X and P2Y receptors is discussed in the context of their effects on renal vascular and tubular functions. Attention is paid to effects on the cortical vasculature and intraglomerular structures, autoregulation of renal blood flow, tubuloglomerular feedback, and the control of medullary blood flow. The role of the nucleotide/P2 receptor system in the autocrine/paracrine regulation of sodium and fluid transport in the tubular and collecting duct system is outlined together with its role in integrative sodium and fluid homeostasis and blood pressure control. The final section summarizes the rapidly growing evidence indicating a prominent role of the extracellular nucleotide/P2 receptor system in the pathophysiology of the kidney and aims to identify potential therapeutic opportunities, including hypertension, lithium-induced nephropathy, polycystic kidney disease, and kidney inflammation. We are only beginning to unravel the distinct physiological and pathophysiological influences of the extracellular nucleotide/P2 receptor system and the associated therapeutic perspectives.
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Affiliation(s)
- Volker Vallon
- Departments of Medicine and Pharmacology, University of California San Diego & VA San Diego Healthcare System, San Diego, California; Centre for Nephrology, Division of Medicine, University College London, London, United Kingdom; IMED ECD CVRM R&D, AstraZeneca, Gothenburg, Sweden; Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Biomedicine/Physiology, Aarhus University, Aarhus, Denmark; Departments of Internal Medicine and Nutrition and Integrative Physiology, and Center on Aging, University of Utah Health & Nephrology Research, VA Salt Lake City Healthcare System, Salt Lake City, Utah
| | - Robert Unwin
- Departments of Medicine and Pharmacology, University of California San Diego & VA San Diego Healthcare System, San Diego, California; Centre for Nephrology, Division of Medicine, University College London, London, United Kingdom; IMED ECD CVRM R&D, AstraZeneca, Gothenburg, Sweden; Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Biomedicine/Physiology, Aarhus University, Aarhus, Denmark; Departments of Internal Medicine and Nutrition and Integrative Physiology, and Center on Aging, University of Utah Health & Nephrology Research, VA Salt Lake City Healthcare System, Salt Lake City, Utah
| | - Edward W Inscho
- Departments of Medicine and Pharmacology, University of California San Diego & VA San Diego Healthcare System, San Diego, California; Centre for Nephrology, Division of Medicine, University College London, London, United Kingdom; IMED ECD CVRM R&D, AstraZeneca, Gothenburg, Sweden; Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Biomedicine/Physiology, Aarhus University, Aarhus, Denmark; Departments of Internal Medicine and Nutrition and Integrative Physiology, and Center on Aging, University of Utah Health & Nephrology Research, VA Salt Lake City Healthcare System, Salt Lake City, Utah
| | - Jens Leipziger
- Departments of Medicine and Pharmacology, University of California San Diego & VA San Diego Healthcare System, San Diego, California; Centre for Nephrology, Division of Medicine, University College London, London, United Kingdom; IMED ECD CVRM R&D, AstraZeneca, Gothenburg, Sweden; Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Biomedicine/Physiology, Aarhus University, Aarhus, Denmark; Departments of Internal Medicine and Nutrition and Integrative Physiology, and Center on Aging, University of Utah Health & Nephrology Research, VA Salt Lake City Healthcare System, Salt Lake City, Utah
| | - Bellamkonda K Kishore
- Departments of Medicine and Pharmacology, University of California San Diego & VA San Diego Healthcare System, San Diego, California; Centre for Nephrology, Division of Medicine, University College London, London, United Kingdom; IMED ECD CVRM R&D, AstraZeneca, Gothenburg, Sweden; Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Biomedicine/Physiology, Aarhus University, Aarhus, Denmark; Departments of Internal Medicine and Nutrition and Integrative Physiology, and Center on Aging, University of Utah Health & Nephrology Research, VA Salt Lake City Healthcare System, Salt Lake City, Utah
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13
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Zheng XB, Zhang YL, Li Q, Liu YG, Wang XD, Yang BL, Zhu GC, Zhou CF, Gao Y, Liu ZX. Effects of 1,8-cineole on neuropathic pain mediated by P2X2 receptor in the spinal cord dorsal horn. Sci Rep 2019; 9:7909. [PMID: 31133659 PMCID: PMC6536508 DOI: 10.1038/s41598-019-44282-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 05/13/2019] [Indexed: 12/11/2022] Open
Abstract
As an intractable health threat, neuropathic pain is now a key problem in clinical therapy, which can be caused by lesions affecting the peripheral nervous systems. 1,8-cineole is a natural monoterpene cyclic ether present in eucalyptus and has been reported to exhibit anti-inflammatory and antioxidant effects. Research has shown that 1,8-cineole inhibits P2X3 receptor-mediated neuropathic pains in dorsal root ganglion. The P2X2 and P2X3 receptors participate in the transmission of algesia and nociception information by primary sensory neurons. In the present study, We thus investigated in the spinal cord dorsal horn whether 1,8-cineole inhibits the expression of P2X2 receptor-mediated neuropathic pain. This study used rats in five random groups: group of chronic constriction injury(CCI) with dimethysulfoxide control (CCI + DMSO); group of CCI; sham group(Sham); group of CCI treated with a low dose 1,8-cineole (CCI + 50 mg/kg); group of CCI with a high dose (CCI + 100 mg/kg). We observed the effects of 1,8-cineole on thermal withdrawal latency (TWL) and mechanical withdrawal threshold (MWT). We examined P2X2 receptors mRNA change in rat spinal cord dorsal horn by In situ nucleic acid hybridization(ISH) and Quantitative realtime polymerase chain reaction (qRT-PCR) methods. Western Blotting and Immunohistochemical staining methods were used to observe P2X2 receptor protein expressions in the rat spinal cord dorsal horn. It demonstrated that oral administration of 1,8-cineole inhibits over-expression of P2X2 receptor protein and mRNA in the spinal cord and dorsal horn in the CCI rats. And the study explored new methods for the prevention and treatment of neuropathic pain.
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Affiliation(s)
- Xiao-Bo Zheng
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China.,Jiangxi Health Vocational College, Nanchang, 330052, Jiangxi, People's Republic of China
| | - Ya-Ling Zhang
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Qing Li
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Yi-Guo Liu
- Grade 2018, Medical School of Tongji University, Shanghai, 310000, People's Republic of China
| | - Xiang-Dong Wang
- Jiangxi Health Vocational College, Nanchang, 330052, Jiangxi, People's Republic of China
| | - Bao-Lin Yang
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Gao-Chun Zhu
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Cong-Fa Zhou
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Yun Gao
- Department of physiology, Basic Medical School, Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Zeng-Xu Liu
- Department of Anatomy, Medical School of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China.
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14
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Zou L, Gong Y, Liu S, Liang S. Natural compounds acting at P2 receptors alleviate peripheral neuropathy. Brain Res Bull 2018; 151:125-131. [PMID: 30599217 DOI: 10.1016/j.brainresbull.2018.12.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/23/2018] [Accepted: 12/26/2018] [Indexed: 12/29/2022]
Abstract
Neuropathic pain is generally resistant to currently available treatments, and it is often a consequence of nerve injury due to surgery, diabetes or infection. Myocardial ischemic nociceptive signaling increases the sympathoexcitatory reflex to aggravate myocardial injury. Elucidation of the pathogenetic factors might provide a target for optimal treatment. Abundant evidence in the literature suggests that P2X and P2Y receptors play important roles in signal transmission. Traditional Chinese medicines, such as emodin, puerarin and resveratrol, antagonize nociceptive transmission mediated by purinergic 2 (P2) receptors in primary afferent neurons. This review summarizes recently published data on P2 receptor-mediated neuropathic pain and myocardial ischemia in dorsal root ganglia (DRG), superior cervical ganglia (SCG) and stellate ganglia (SG), with a special focus on the beneficial role of natural compounds.
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Affiliation(s)
- Lifang Zou
- Neuropharmacological Labratory of Physiology Department, Medical School of Nanchang University, Nanchang, Jiangxi, 330006, Peoples Republic of China; Jiangxi Provincial Key Laboratory of autonomic nervous function and disease, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Yingxin Gong
- Undergraduate student of the First Clinical Department, Medical School of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Shuangmei Liu
- Neuropharmacological Labratory of Physiology Department, Medical School of Nanchang University, Nanchang, Jiangxi, 330006, Peoples Republic of China; Jiangxi Provincial Key Laboratory of autonomic nervous function and disease, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Shangdong Liang
- Neuropharmacological Labratory of Physiology Department, Medical School of Nanchang University, Nanchang, Jiangxi, 330006, Peoples Republic of China; Jiangxi Provincial Key Laboratory of autonomic nervous function and disease, Nanchang, Jiangxi, 330006, People's Republic of China.
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15
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Abstract
Respiratory chemoreceptors in vertebrates are specialized cells that detect chemical changes in the environment or arterial blood supply and initiate autonomic responses, such as hyperventilation or changes in heart rate, to improve O2 uptake and delivery to tissues. These chemoreceptors are sensitive to changes in O2, CO2 and/or H+. In fish and mammals, respiratory chemoreceptors may be additionally sensitive to ammonia, hypoglycemia, and numerous other stimuli. Thus, chemoreceptors that affect respiration respond to different types of stimuli (or modalities) and are considered to be "polymodal". This review discusses the polymodal nature of respiratory chemoreceptors in vertebrates with a particular emphasis on chemoreceptors of the carotid body and pulmonary epithelium in mammals, and on neuroepithelial cells in water- and air-breathing fish. A major goal will be to examine the evidence for putative polymodal chemoreceptors in fish within the context of studies on mammalian models, for which polymodal chemoreceptors are well described, in order to improve our understanding of the evolution of polymodal chemoreceptors in vertebrates, and to aid in future studies that aim to identify putative receptors in air- and water-breathing fish.
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16
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1,8-cineole decreases neuropathic pain probably via a mechanism mediating P2X3 receptor in the dorsal root ganglion. Neurochem Int 2018; 121:69-74. [PMID: 30248433 DOI: 10.1016/j.neuint.2018.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/04/2018] [Accepted: 09/18/2018] [Indexed: 12/13/2022]
Abstract
1,8-cineole is a natural monoterpene cyclic ether present in eucalyptus and has been reported to exhibit anti-inflammatory and antioxidant effects. The therapeutic effects of 1,8-cineole on neuropathic pain and the molecular mechanisms of its pharmacological actions remain largely unknown. In the present study, we investigated the analgesic mechanisms of orally administered 1,8-cineole in a rat model of chronic constriction injury (CCI) and examined the drug-induced modulation of P2X3 receptor expression in dorsal root ganglia. The mechanical withdrawal threshold and thermal withdrawal latency were measured in rats to assess behavioural changes 7 and 14 days after CCI surgery. Changes in P2X3 receptor mRNA expression of L4-5 dorsal root ganglia were analysed using quantitative real-time polymerase chain reaction at the 7th and 14th postoperative day. Additionally, we examined the expression of P2X3 receptor protein in L4-5 dorsal root ganglia 7 and 14 days after surgery using immunohistochemistry and western blots. We found that 1,8-cineole can alleviate pathological pain caused by P2X3 receptor stimulation and explored new methods for the prevention and treatment of neuropathic pain.
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17
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Bordoni B, Marelli F, Morabito B, Castagna R. Chest pain in patients with COPD: the fascia's subtle silence. Int J Chron Obstruct Pulmon Dis 2018; 13:1157-1165. [PMID: 29695899 PMCID: PMC5903840 DOI: 10.2147/copd.s156729] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
COPD is a progressive condition that leads to a pathological degeneration of the respiratory system. It represents one of the most important causes of mortality and morbidity in the world, and it is characterized by the presence of many associated comorbidities. Recent studies emphasize the thoracic area as one of the areas of the body concerned by the presence of pain with percentages between 22% and 54% in patients with COPD. This article analyzes the possible causes of mediastinal pain, including those less frequently taken into consideration, which concern the role of the fascial system of the mediastinum. The latter can be a source of pain especially when a chronic pathology is altering the structure of the connective tissue. We conclude that to consider the fascia in daily clinical activity may improve the therapeutic approach toward the patient.
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Affiliation(s)
- Bruno Bordoni
- Foundation Don Carlo Gnocchi IRCCS, Department of Cardiology, Institute of Hospitalization and Care with Scientific Address, Milan, Italy
| | - Fabiola Marelli
- CRESO, School of Osteopathic Centre for Research and Studies, Gorla Minore, Italy
- CRESO, School of Osteopathic Centre for Research and Studies, Fano, Italy
| | - Bruno Morabito
- CRESO, School of Osteopathic Centre for Research and Studies, Gorla Minore, Italy
- CRESO, School of Osteopathic Centre for Research and Studies, Fano, Italy
- Department of Radiological, Oncological and Anatomopathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Roberto Castagna
- CRESO, School of Osteopathic Centre for Research and Studies, Gorla Minore, Italy
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18
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Hennel M, Harsanyiova J, Ru F, Zatko T, Brozmanova M, Trancikova A, Tatar M, Kollarik M. Structure of vagal afferent nerve terminal fibers in the mouse trachea. Respir Physiol Neurobiol 2018; 249:35-46. [PMID: 29306061 DOI: 10.1016/j.resp.2018.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 12/23/2017] [Accepted: 01/01/2018] [Indexed: 12/20/2022]
Abstract
The structure of primary afferent nerve terminals profoundly influences their function. While the complex vagal airway nerve terminals (stretch receptors, cough receptors and neuroepithelial bodies) were thoroughly characterized, much less is known about the structure of airway nerves that do not form distinct complex terminals (often termed free nerve fibers). We selectively induced expression of GFP in vagal afferent nerves in the mouse by transfection with AAV-GFP virus vector and visualized nerve terminals in the trachea by whole organ confocal imaging. Based on structural characteristics we identified four types of vagal afferent nerve fiber terminals in the trachea. Importantly, we found that distinct compartments of tracheal tissue are innervated by distinct nerve fiber terminal types in a non-overlapping manner. Thus, separate terminal types innervate tracheal epithelium vs. anterolateral tracheal wall containing cartilaginous rings and ligaments vs. dorsal wall containing smooth muscle. Our results will aid the study of structure-function relationships in vagal airway afferent nerves and regulation of respiratory reflexes.
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Affiliation(s)
- Michal Hennel
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Jana Harsanyiova
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Fei Ru
- The Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD 21224, United States
| | - Tomas Zatko
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Mariana Brozmanova
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Alzbeta Trancikova
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Milos Tatar
- Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Department of Pathophysiology JFM CU and Biomedical Center Martin, 036 01 Martin, Slovakia
| | - Marian Kollarik
- The Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD 21224, United States.
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19
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Barrios J, Patel KR, Aven L, Achey R, Minns MS, Lee Y, Trinkaus-Randall VE, Ai X. Early life allergen-induced mucus overproduction requires augmented neural stimulation of pulmonary neuroendocrine cell secretion. FASEB J 2017; 31:4117-4128. [PMID: 28566470 DOI: 10.1096/fj.201700115r] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/15/2017] [Indexed: 12/13/2022]
Abstract
Pulmonary neuroendocrine cells (PNECs) are the only innervated airway epithelial cells. To what extent neural innervation regulates PNEC secretion and function is unknown. Here, we discover that neurotrophin 4 (NT4) plays an essential role in mucus overproduction after early life allergen exposure by orchestrating PNEC innervation and secretion of GABA. We found that PNECs were the only cellular source of GABA in airways. In addition, PNECs expressed NT4 as a target-derived mechanism underlying PNEC innervation during development. Early life allergen exposure elevated the level of NT4 and caused PNEC hyperinnervation and nodose neuron hyperactivity. Associated with aberrant PNEC innervation, the authors discovered that GABA hypersecretion was required for the induction of mucin Muc5ac expression. In contrast, NT4-/- mice were protected from allergen-induced mucus overproduction and changes along the nerve-PNEC axis without any defects in inflammation. Last, GABA installation restored mucus overproduction in NT4-/- mice after early life allergen exposure. Together, our findings provide the first evidence for NT4-dependent neural regulation of PNEC secretion of GABA in a neonatal disease model. Targeting the nerve-PNEC axis may be a valid treatment strategy for mucus overproduction in airway diseases, such as childhood asthma.-Barrios, J., Patel, K. R., Aven, L., Achey, R., Minns, M. S., Lee, Y., Trinkaus-Randall, V. E., Ai, X. Early life allergen-induced mucus overproduction requires augmented neural stimulation of pulmonary neuroendocrine cell secretion.
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Affiliation(s)
- Juliana Barrios
- The Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Kruti R Patel
- The Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Linh Aven
- The Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Rebecca Achey
- The Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Martin S Minns
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Yoonjoo Lee
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, USA
| | | | - Xingbin Ai
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA;
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20
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Mazzone SB, Undem BJ. Vagal Afferent Innervation of the Airways in Health and Disease. Physiol Rev 2017; 96:975-1024. [PMID: 27279650 DOI: 10.1152/physrev.00039.2015] [Citation(s) in RCA: 326] [Impact Index Per Article: 46.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Vagal sensory neurons constitute the major afferent supply to the airways and lungs. Subsets of afferents are defined by their embryological origin, molecular profile, neurochemistry, functionality, and anatomical organization, and collectively these nerves are essential for the regulation of respiratory physiology and pulmonary defense through local responses and centrally mediated neural pathways. Mechanical and chemical activation of airway afferents depends on a myriad of ionic and receptor-mediated signaling, much of which has yet to be fully explored. Alterations in the sensitivity and neurochemical phenotype of vagal afferent nerves and/or the neural pathways that they innervate occur in a wide variety of pulmonary diseases, and as such, understanding the mechanisms of vagal sensory function and dysfunction may reveal novel therapeutic targets. In this comprehensive review we discuss historical and state-of-the-art concepts in airway sensory neurobiology and explore mechanisms underlying how vagal sensory pathways become dysfunctional in pathological conditions.
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Affiliation(s)
- Stuart B Mazzone
- School of Biomedical Sciences, The University of Queensland, St Lucia, Brisbane, Australia; and Department of Medicine, Johns Hopkins University Medical School, Asthma & Allergy Center, Baltimore, Maryland
| | - Bradley J Undem
- School of Biomedical Sciences, The University of Queensland, St Lucia, Brisbane, Australia; and Department of Medicine, Johns Hopkins University Medical School, Asthma & Allergy Center, Baltimore, Maryland
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21
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Purinergic receptors in the carotid body as a new drug target for controlling hypertension. Nat Med 2016; 22:1151-1159. [PMID: 27595323 DOI: 10.1038/nm.4173] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 07/27/2016] [Indexed: 11/09/2022]
Abstract
In view of the high proportion of individuals with resistance to antihypertensive medication and/or poor compliance or tolerance of this medication, new drugs to treat hypertension are urgently needed. Here we show that peripheral chemoreceptors generate aberrant signaling that contributes to high blood pressure in hypertension. We discovered that purinergic receptor P2X3 (P2rx3, also known as P2x3) mRNA expression is upregulated substantially in chemoreceptive petrosal sensory neurons in rats with hypertension. These neurons generate both tonic drive and hyperreflexia in hypertensive (but not normotensive) rats, and both phenomena are normalized by the blockade of P2X3 receptors. Antagonism of P2X3 receptors also reduces arterial pressure and basal sympathetic activity and normalizes carotid body hyperreflexia in conscious rats with hypertension; no effect was observed in rats without hypertension. We verified P2X3 receptor expression in human carotid bodies and observed hyperactivity of carotid bodies in individuals with hypertension. These data support the identification of the P2X3 receptor as a potential new target for the control of human hypertension.
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22
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Nicolls MR, Dhillon GS, Daddi N. A Critical Role for Airway Microvessels in Lung Transplantation. Am J Respir Crit Care Med 2016; 193:479-81. [PMID: 26930430 DOI: 10.1164/rccm.201511-2117ed] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Mark R Nicolls
- 1 VA Palo Alto Health Care System Palo Alto, California.,2 Stanford University School of Medicine Stanford, California and
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23
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Cough in interstitial lung disease. Pulm Pharmacol Ther 2015; 35:122-8. [DOI: 10.1016/j.pupt.2015.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 10/22/2015] [Accepted: 10/23/2015] [Indexed: 12/15/2022]
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