1
|
Khan J, Wang Q, Korczeniewska OA, McNeil R, Ren Y, Benoliel R, Eliav E. Response profile in a rat model of exercise-induced hypoalgesia is associated with duloxetine, pregabalin and diclofenac effect on constriction-induced neuropathy. Eur J Pain 2023; 27:129-147. [PMID: 36198034 DOI: 10.1002/ejp.2044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 09/28/2022] [Accepted: 10/03/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Exercise is a known trigger of the inhibitory pain modulation system and its analgesic effect is termed exercise-induced hypoalgesia (EIH). Previous studies have demonstrated that rats with deficient analgesic response following exercise develop more significant hypersensitivity following nerve injury compared to rats with substantial analgesic response following exercise. OBJECTIVES A rat model of EIH as an indicator of the pain inhibitory system's efficiency was used to explore the association between EIH profiles and the effect of pharmacotherapy on rat's neuropathic pain. METHODS EIH profiles were assessed by evaluating paw responses to mechanical stimuli before and after exercise on a rotating rod. Rats with a reduction of ≤33% in responses were classified as low EIH and those with ≥67% as high EIH. Low and high EIH rats underwent sciatic nerve chronic constriction injury (CCI). Paw responses to mechanical stimuli were measured at baseline, following CCI, and after treatment with diclofenac, duloxetine or pregabalin. In a different group of low and high EIH rats, EIH was measured before and following treatment with the same medications. RESULTS Low EIH rats developed more significant hypersensitivity following CCI. Duloxetine and pregabalin successfully reduced hypersensitivity, although significantly more so in low EIH rats. Diclofenac had limited effects, and only on low EIH rats. Four days of duloxetine administration transformed low EIH rats' profiles to high EIH. CONCLUSIONS The findings of this study suggest that EIH profiles in rats can not only predict the development of hypersensitivity following injury but may also support targeted pharmacological treatment. SIGNIFICANCE Exercise is a known trigger of the inhibitory pain modulation. Rats with deficient analgesic response following exercise develop more significant hypersensitivity following nerve injury. Pain modulation profiles in rats can also support targeted pharmacological treatment; rats with deficient analgesic response following exercise benefit more from treatment with duloxetine and gabapentin. Treatment with duloxetine can improve pain modulation profile.
Collapse
Affiliation(s)
- Junad Khan
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York, USA
| | - Qian Wang
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York, USA
| | | | | | - Yanfang Ren
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York, USA
| | - Rafael Benoliel
- Rutgers School of Dental Medicine, Rutgers university, Newark, New Jersey, USA
| | - Eli Eliav
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York, USA
| |
Collapse
|
2
|
Korczeniewska OA, James MH, Eliav T, Katzmann Rider G, Mehr JB, Affendi H, Aston-Jones G, Benoliel R. Chemogenetic inhibition of trigeminal ganglion neurons attenuates behavioural and neural pain responses in a model of trigeminal neuropathic pain. Eur J Pain 2021; 26:634-647. [PMID: 34767278 DOI: 10.1002/ejp.1887] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Nerve injury can lead to ectopic activation of injured nociceptorsand central sensitization characterized by allodynia and hyperalgesia. Reduction in the activity of primary afferent neurons has been shown to be sufficient in alleviating peripherally generated pain. The cell bodies of such trigeminal nociceptors are located in the trigeminal ganglia (TG) with central processes that terminate in the brainstem trigeminal nucleus caudalis (TNC). The TG is therefore a strategic locus where afferent input can be manipulated. We hypothesized that chemogenetic inhibition of TG would suppress TNC neuronal activity and attenuate pain behaviour in a rat model of painful traumatic trigeminal neuropathy (PTTN). METHODS Trigeminal neuropathic pain was induced in adult male Sprague-Dawley rats (n = 24) via chronic constriction injury to the infraorbital nerve (ION-CCI). Naïve and sham rats were used as controls (n = 20/group). Rats within each group received TG-directed microinjections of AAV virus containing either the inhibitory hM4Di-DREADD construct or EGFP. RESULTS In the ION-CCI group, systemic administration of the DREADD agonist clozapine N-oxide (CNO) reversed the hypersensitivity phenotype in animals expressing hM4Di but not EGFP. CNO-mediated activation of hM4Di DREADD in ION-CCI animals was also associated with reduced Fos expression in the TNC elicited by repeated mechanical stimulation of the dermatome ipsilateral to the injury. There was no effect of CNO on pain behaviour or TNC Fos expression in eGFP animals. CONCLUSION Our results indicate that DREADDs may offer an effective therapeutic approach for treatment of trigeminal neuropathic pain. SIGNIFICANCE Trigeminal neuropathic pain is highly resistant to therapy and we are in dire need of novel approaches. This study provides further evidence for the successful application of DREADDs as an effective tool for modulating central nervous system function. CNO mediated activation of hM4Di-DREADDs in the trigeminal ganglion (TG) attenuates nerve injury induced neuropathic pain by acting on hyperactive TG cells. It also establishes the TG as an effective target to manage pain in the face and head. Accessing the TG in clinical populations is a relatively simple and safe procedure, making this approach highly significant. Moreover, the methodology described here has applications in trigeminal neuropathic pain from traumatic other etiologies and in spinal neuropathic pain. Chronic pain syndromes are characterized by a progressive failure of brain centers to adequately inhibit pain and as these are identified, we may be able to target them for therapy. Therefore, our findings might have wide application in chronic pain syndromes.
Collapse
Affiliation(s)
- Olga A Korczeniewska
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers University, Newark, New Jersey, USA.,Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Morgan H James
- Department of Psychiatry, Robert Wood Johnson Medical School, Rutgers University, Piscataway, New Jersey, USA.,Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Tali Eliav
- School of Graduate Studies, Rutgers Biomedical and Health Sciences, Newark, New Jersey, USA
| | - Giannina Katzmann Rider
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers University, Newark, New Jersey, USA
| | - Jacqueline B Mehr
- Department of Psychiatry, Robert Wood Johnson Medical School, Rutgers University, Piscataway, New Jersey, USA.,Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Hafsa Affendi
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers University, Newark, New Jersey, USA
| | - Gary Aston-Jones
- Department of Psychiatry, Robert Wood Johnson Medical School, Rutgers University, Piscataway, New Jersey, USA.,Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Rafael Benoliel
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers University, Newark, New Jersey, USA.,Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| |
Collapse
|
3
|
Hansson P. Commentary to "Challenges and opportunities in translational pain research-An opinion paper of the working group on translational pain research of the European Pain Federation (EFIC)" by Mouraux et al. Eur J Pain 2021; 25:1179-1180. [PMID: 33756048 DOI: 10.1002/ejp.1772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Per Hansson
- Department of Pain Management and Research, Norwegian National Advisory Unit on Neuropathic Pain, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway.,Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
4
|
Blumenthal GH, Nandakumar B, Schnider AK, Detloff MR, Ricard J, Bethea JR, Moxon KA. Modelling at-level allodynia after mid-thoracic contusion in the rat. Eur J Pain 2021; 25:801-816. [PMID: 33296535 DOI: 10.1002/ejp.1711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND The rat mid-thoracic contusion model has been used to study at-level tactile allodynia, a common type of pain that develops after spinal cord injury (SCI). An important advantage of this model is that not all animals develop hypersensitivity. Therefore, it can be used to examine mechanisms that are strictly related to the development of pain-like behaviour separately from mechanisms related to the injury itself. However, how to separate animals that develop hypersensitivity from those that do not is unclear. METHODS The aims of the current study were to identify where hypersensitivity and spasticity develop and use this information to identify metrics to separate animals that develop hypersensitivity from those that do not to study differences in their behaviour. To accomplish these aims, a grid was used to localize hypersensitivity on the dorsal trunk relative to thoracic dermatomes and supraspinal responses to tactile stimulation were tallied. These supraspinal responses were used to develop a hypersensitivity score to separate animals that develop hypersensitivity, or pain-like response to nonpainful stimuli. RESULTS Similar to humans, the development of hypersensitivity could occur with the development of spasticity or hyperreflexia. Moreover, the time course and prevalence of hypersensitivity phenotypes (at-, above-, or below level) produced by this model were similar to that observed in humans with SCI. CONCLUSION However, the amount of spared spinal matter in the cord did not explain the development of hypersensitivity, as previously reported. This approach can be used to study the mechanisms underlying the development of hypersensitivity separately from mechanisms related to injury alone.
Collapse
Affiliation(s)
- Gary H Blumenthal
- Department of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA.,Department of Biomedical Engineering, University of California-Davis, Davis, CA, USA
| | - Bharadwaj Nandakumar
- Department of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA.,Department of Biomedical Engineering, University of California-Davis, Davis, CA, USA
| | - Ashley K Schnider
- Department of Biomedical Engineering, University of California-Davis, Davis, CA, USA
| | - Megan R Detloff
- Department of Neurobiology and Anatomy, Spinal Cord Research Center, College of Medicine, Drexel University, Philadelphia, PA, USA
| | - Jerome Ricard
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - John R Bethea
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Karen A Moxon
- Department of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA.,Department of Biomedical Engineering, University of California-Davis, Davis, CA, USA.,Center for Neuroscience, Davis, CA, USA
| |
Collapse
|
5
|
Korczeniewska OA, Katzmann Rider G, Gajra S, Narra V, Ramavajla V, Chang YJ, Tao Y, Soteropoulos P, Husain S, Khan J, Eliav E, Benoliel R. Differential gene expression changes in the dorsal root versus trigeminal ganglia following peripheral nerve injury in rats. Eur J Pain 2020; 24:967-982. [PMID: 32100907 DOI: 10.1002/ejp.1546] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/02/2020] [Accepted: 02/12/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND The dorsal root (DRG) and trigeminal (TG) ganglia contain cell bodies of sensory neurons of spinal and trigeminal systems, respectively. They are homologs of each other; however, differences in how the two systems respond to injury exist. Trigeminal nerve injuries rarely result in chronic neuropathic pain (NP). To date, no genes involved in the differential response to nerve injury between the two systems have been identified. We examined transcriptional changes involved in the development of trigeminal and spinal NP. METHODS Trigeminal and spinal mononueropathies were induced by chronic constriction injury to the infraorbital or sciatic nerve. Expression levels of 84 genes in the TG and DRG at 4, 8 and 21 days post-injury were measured using real-time PCR. RESULTS We found time-dependent and ganglion-specific transcriptional regulation that may contribute to the development of corresponding neuropathies. Among genes significantly regulated in both ganglia Cnr2, Grm5, Htr1a, Il10, Oprd1, Pdyn, Prok2 and Tacr1 were up-regulated in the TG but down-regulated in the DRG at 4 days post-injury; at 21 days post-injury, Adora1, Cd200, Comt, Maob, Mapk3, P2rx4, Ptger1, Tnf and Slc6a2 were significantly up-regulated in the TG but down-regulated in the DRG. CONCLUSIONS Our findings suggest that spinal and trigeminal neuropathies due to trauma are differentially regulated. Subtle but important differences between the two ganglia may affect NP development. SIGNIFICANCE We present distinct transcriptional alterations in the TG and DRG that may contribute to differences observed in the corresponding mononeuropathies. Since the trigeminal system seems more resistant to developing NP following trauma our findings lay ground for future research to detect genes and pathways that may act in a protective or facilitatory manner. These may be novel and important therapeutic targets.
Collapse
Affiliation(s)
- Olga A Korczeniewska
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Giannina Katzmann Rider
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Sheetal Gajra
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Vivek Narra
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Vaishnavi Ramavajla
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Yun-Juan Chang
- Office of Advance Research Computing, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Yuanxiang Tao
- Center for Pain Medicine Research, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Patricia Soteropoulos
- The Genomics Center, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Seema Husain
- The Genomics Center, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Junad Khan
- Eastman Institute of Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Eli Eliav
- Eastman Institute of Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Rafael Benoliel
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| |
Collapse
|
6
|
Vasović D, Divović B, Treven M, Knutson DE, Steudle F, Scholze P, Obradović A, Fabjan J, Brković B, Sieghart W, Ernst M, Cook JM, Savić MM. Trigeminal neuropathic pain development and maintenance in rats are suppressed by a positive modulator of α6 GABA A receptors. Eur J Pain 2019; 23:973-984. [PMID: 30633839 PMCID: PMC6461498 DOI: 10.1002/ejp.1365] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 12/13/2018] [Accepted: 12/19/2018] [Indexed: 01/06/2023]
Abstract
γ-Aminobutyric acid type A (GABAA ) receptors containing the α6 subunit are located in trigeminal ganglia, and their reduction by small interfering RNA increases inflammatory temporomandibular and myofascial pain in rats. We thus hypothesized that enhancing their activity may help in neuropathic syndromes originating from the trigeminal system. Here, we performed a detailed electrophysiological and pharmacokinetic analysis of two recently developed deuterated structurally similar pyrazoloquinolinone compounds. DK-I-56-1 at concentrations below 1 µM enhanced γ-aminobutyric acid (GABA) currents at recombinant rat α6β3γ2, α6β3δ and α6β3 receptors, whereas it was inactive at most GABAA receptor subtypes containing other α subunits. DK-I-87-1 at concentrations below 1 µM was inactive at α6-containing receptors and only weakly modulated other GABAA receptors investigated. Both plasma and brain tissue kinetics of DK-I-56-1 were relatively slow, with half-lives of 6 and 13 hr, respectively, enabling the persistence of estimated free brain concentrations in the range 10-300 nM throughout a 24-hr period. Results obtained in two protocols of chronic constriction injury of the infraorbital nerve in rats dosed intraperitoneally with DK-I-56-1 during 14 days after surgery or with DK-I-56-1 or DK-I-87-1 during 14 days after trigeminal neuropathy were already established, demonstrated that DK-I-56-1 but not DK-I-87-1 significantly reduced the hypersensitivity response to von Frey filaments. SIGNIFICANCE: Neuropathic pain induced by trigeminal nerve damage is poorly controlled by current treatments. DK-I-56-1 that positively modulates α6 GABAA receptors is appropriate for repeated administration and thus may represent a novel treatment option against the development and maintenance of trigeminal neuropathic pain.
Collapse
Affiliation(s)
- Dina Vasović
- School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Branka Divović
- Faculty of Pharmacy, Department of Pharmacology, University of Belgrade, Belgrade, Serbia
| | - Marco Treven
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Daniel E Knutson
- Department of Chemistry and Biochemistry, Milwaukee Institute of Drug Discovery, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin
| | - Friederike Steudle
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Petra Scholze
- Department of Pathobiology of the Nervous System, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Aleksandar Obradović
- Faculty of Pharmacy, Department of Pharmacology, University of Belgrade, Belgrade, Serbia
| | - Jure Fabjan
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Božidar Brković
- School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Werner Sieghart
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Margot Ernst
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - James M Cook
- Department of Chemistry and Biochemistry, Milwaukee Institute of Drug Discovery, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin
| | - Miroslav M Savić
- Faculty of Pharmacy, Department of Pharmacology, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
7
|
Yezierski RP, Hansson P. Inflammatory and Neuropathic Pain From Bench to Bedside: What Went Wrong? THE JOURNAL OF PAIN 2018; 19:571-588. [DOI: 10.1016/j.jpain.2017.12.261] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 11/29/2017] [Accepted: 12/13/2017] [Indexed: 12/31/2022]
|
8
|
Korczeniewska OA, Husain S, Khan J, Eliav E, Soteropoulos P, Benoliel R. Differential gene expression in trigeminal ganglia of male and female rats following chronic constriction of the infraorbital nerve. Eur J Pain 2018; 22:875-888. [PMID: 29350446 DOI: 10.1002/ejp.1174] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND The mechanisms underlying sex-based differences in pain and analgesia are poorly understood. In this study, we investigated gene expression changes in trigeminal ganglia (TG) of male and female rats exposed to infraorbital nerve chronic constriction injury (IoN-CCI). METHODS Somatosensory assessments were performed prior to IoN-CCI and at selected time points postsurgery. Selected gene expression changes were examined with real-time quantitative polymerase chain reaction (RT-PCR) in ipsilateral TG at 21 days postsurgery. RESULTS Rats exposed to IoN-CCI developed significant mechanical allodynia and hyperalgesia on days 19 and 21 postsurgery. During this period, females developed significantly more allodynia but not hyperalgesia compared to males. At 21 days postsurgery, expression levels of 44 of the 84 investigated pain-related genes in ipsilateral TG were significantly regulated relative to naïve rats in either sex. Csf1 and Cx3cr1 were up-regulated in both sexes, but the magnitude of regulation was significantly higher in females (p = 0.02 and p = 0.001, respectively). Htr1a and Scn9a were down-regulated in both sexes, but the down-regulation was significantly more pronounced in males (p = 0.04 and p = 0.02, respectively). Additionally, Cck, Il1a, Pla2g1b and Tnf genes were significantly regulated in females but not in males, and Chrna4 gene was significantly down-regulated in males but not in females. CONCLUSIONS Our findings suggest sex-dependent gene regulation in response to nerve injury, which may contribute to sex dimorphism of trigeminal neuropathic pain. Further studies are needed to establish gene expression changes over time and correlate these with hormonal and other physiological parameters in male and female. SIGNIFICANCE We present novel sex-specific transcriptional regulation in trigeminal ganglia that may contribute to male-/female-based differences in trigeminal neuropathic pain. These findings are expected to open new research horizons, particularly in male versus female targeted therapeutic regimens.
Collapse
Affiliation(s)
- O A Korczeniewska
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - S Husain
- The Genomics Center, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - J Khan
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - E Eliav
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - P Soteropoulos
- The Genomics Center, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - R Benoliel
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, The State University of New Jersey, Newark, NJ, USA
| |
Collapse
|