1
|
Singh S, Kopruszinski CM, Watanabe M, Dodick DW, Navratilova E, Porreca F. Female-selective mechanisms promoting migraine. J Headache Pain 2024; 25:63. [PMID: 38658853 PMCID: PMC11040950 DOI: 10.1186/s10194-024-01771-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
Sexual dimorphism has been revealed for many neurological disorders including chronic pain. Prelicinal studies and post-mortem analyses from male and female human donors reveal sexual dimorphism of nociceptors at transcript, protein and functional levels suggesting different mechanisms that may promote pain in men and women. Migraine is a common female-prevalent neurological disorder that is characterized by painful and debilitating headache. Prolactin is a neurohormone that circulates at higher levels in females and that has been implicated clinically in migraine. Prolactin sensitizes sensory neurons from female mice, non-human primates and humans revealing a female-selective pain mechanism that is conserved evolutionarily and likely translationally relevant. Prolactin produces female-selective migraine-like pain behaviors in rodents and enhances the release of calcitonin gene-related peptide (CGRP), a neurotransmitter that is causal in promoting migraine in many patients. CGRP, like prolactin, produces female-selective migraine-like pain behaviors. Consistent with these observations, publicly available clinical data indicate that small molecule CGRP-receptor antagonists are preferentially effective in treatment of acute migraine therapy in women. Collectively, these observations support the conclusion of qualitative sex differences promoting migraine pain providing the opportunity to tailor therapies based on patient sex for improved outcomes. Additionally, patient sex should be considered in design of clinical trials for migraine as well as for pain and reassessment of past trials may be warranted.
Collapse
Affiliation(s)
- Shagun Singh
- Banner - University Medicine Sunrise Primary Care, Tucson, AZ, 85750, USA
| | - Caroline M Kopruszinski
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, 85724, USA
| | - Moe Watanabe
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, 85724, USA
| | - David W Dodick
- Department of Neurology, Mayo Clinic, Phoenix, AZ, USA
- Atria Academy of Science and Medicine, New York, NY, USA
| | - Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, 85724, USA
- Department of Neurology, Mayo Clinic, Phoenix, AZ, USA
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, 85724, USA.
- Department of Neurology, Mayo Clinic, Phoenix, AZ, USA.
| |
Collapse
|
2
|
Dayton JR, Marquez J, Romo AK, Chen YJ, Contreras JE, Griffith TN. Thermal escape box: A cost-benefit evaluation paradigm for investigating thermosensation and thermal pain. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2024; 15:100155. [PMID: 38617105 PMCID: PMC11015515 DOI: 10.1016/j.ynpai.2024.100155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/18/2024] [Accepted: 03/27/2024] [Indexed: 04/16/2024]
Abstract
Thermosensation, the ability to detect and estimate temperature, is an evolutionarily conserved process that is essential for survival. Thermosensing is impaired in various pain syndromes, resulting in thermal allodynia, the perception of an innocuous temperature as painful, or thermal hyperalgesia, an exacerbated perception of a painful thermal stimulus. Several behavioral assays exist to study thermosensation and thermal pain in rodents, however, most rely on reflexive withdrawal responses or the subjective quantification of spontaneous nocifensive behaviors. Here, we created a new apparatus, the thermal escape box, which can be attached to temperature-controlled plates and used to assess temperature-dependent effort-based decision-making. The apparatus consists of a light chamber with an opening that fits around temperature-controlled plates, and a small entryway into a dark chamber. A mouse must choose to stay in a brightly lit aversive area or traverse the plates to escape to the enclosed dark chamber. We quantified escape latencies of adult C57Bl/6 mice at different plate temperatures from video recordings and found they were significantly longer at 5 °C, 18 °C, and 52 °C, compared to 30 °C, a mouse's preferred ambient temperature. Differences in escape latencies were abolished in male Trpm8-/- mice and in male Trpv1-/- animals. Finally, we show that chronic constriction injury procedures or oxaliplatin treatement significantly increased escape latencies at cold temperatures compared to controls, the later of which was prevented by the analgesic meloxicam. This demonstrates the utility of this assay in detecting cold pain. Collectively, our study has identified a new and effective tool that uses cost-benefit valuations to study thermosensation and thermal pain.
Collapse
Affiliation(s)
- Jacquelyn R. Dayton
- University of California, Davis. Department of Physiology & Membrane Biology, 1275 Med Science Drive, Davis, CA 95616, United States
| | - Jose Marquez
- University of California, Davis. Department of Physiology & Membrane Biology, 1275 Med Science Drive, Davis, CA 95616, United States
| | - Alejandra K. Romo
- University of California, Davis. Department of Physiology & Membrane Biology, 1275 Med Science Drive, Davis, CA 95616, United States
| | - Yi-Je Chen
- University of California, Davis. Department of Pharmacology, 1275 Med Science Drive, Davis, CA 95616, United States
| | - Jorge E. Contreras
- University of California, Davis. Department of Physiology & Membrane Biology, 1275 Med Science Drive, Davis, CA 95616, United States
| | - Theanne N. Griffith
- University of California, Davis. Department of Physiology & Membrane Biology, 1275 Med Science Drive, Davis, CA 95616, United States
| |
Collapse
|
3
|
Chen O, Luo X, Ji RR. Macrophages and microglia in inflammation and neuroinflammation underlying different pain states. MEDICAL REVIEW (2021) 2023; 3:381-407. [PMID: 38283253 PMCID: PMC10811354 DOI: 10.1515/mr-2023-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/26/2023] [Indexed: 01/30/2024]
Abstract
Pain is a main symptom in inflammation, and inflammation induces pain via inflammatory mediators acting on nociceptive neurons. Macrophages and microglia are distinct cell types, representing immune cells and glial cells, respectively, but they share similar roles in pain regulation. Macrophages are key regulators of inflammation and pain. Macrophage polarization plays different roles in inducing and resolving pain. Notably, macrophage polarization and phagocytosis can be induced by specialized pro-resolution mediators (SPMs). SPMs also potently inhibit inflammatory and neuropathic pain via immunomodulation and neuromodulation. In this review, we discuss macrophage signaling involved in pain induction and resolution, as well as in maintaining physiological pain. Microglia are macrophage-like cells in the central nervous system (CNS) and drive neuroinflammation and pathological pain in various inflammatory and neurological disorders. Microglia-produced inflammatory cytokines can potently regulate excitatory and inhibitory synaptic transmission as neuromodulators. We also highlight sex differences in macrophage and microglial signaling in inflammatory and neuropathic pain. Thus, targeting macrophage and microglial signaling in distinct locations via pharmacological approaches, including immunotherapies, and non-pharmacological approaches will help to control chronic inflammation and chronic pain.
Collapse
Affiliation(s)
- Ouyang Chen
- Department of Anesthesiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, USA
- Department of Cell Biology, Duke University Medical Center, Durham, NC, USA
| | - Xin Luo
- Department of Anesthesiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, USA
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Ru-Rong Ji
- Department of Anesthesiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, USA
- Department of Cell Biology, Duke University Medical Center, Durham, NC, USA
- Department of Neurobiology, Duke University Medical Center, Durham, NC, USA
| |
Collapse
|
4
|
Quijas MM, Queme LF, Weyler AA, Butterfield A, Joshi DP, Mitxelena-Balerdi I, Jankowski MP. Sex specific role of RNA-binding protein, AUF1, on prolonged hypersensitivity after repetitive ischemia with reperfusion injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.08.544080. [PMID: 37333316 PMCID: PMC10274888 DOI: 10.1101/2023.06.08.544080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Repetitive ischemia with reperfusion (I/R) injury is a common cause of myalgia. I/R injuries occur in many conditions that differentially affect males and females including complex regional pain syndrome and fibromyalgia. Our preclinical studies have indicated that primary afferent sensitization and behavioral hypersensitivity due to I/R may be due to sex specific gene expression in the DRGs and distinct upregulation of growth factors and cytokines in the affected muscles. In order to determine how these unique gene expression programs may be established in a sex dependent manner in a model that more closely mimics clinical scenarios, we utilized a newly developed prolonged ischemic myalgia model in mice whereby animals experience repeated I/R injuries to the forelimb and compared behavioral results to unbiased and targeted screening strategies in male and female DRGs. Several distinct proteins were found to be differentially expressed in male and female DRGs, including AU-rich element RNA binding protein (AUF1), which is known to regulate gene expression. Nerve specific siRNA-mediated knockdown of AUF1 inhibited prolonged hypersensitivity in females only, while overexpression of AUF1 in male DRG neurons increased some pain-like responses. Further, AUF1 knockdown was able to specifically inhibit repeated I/R induced gene expression in females but not males. Data suggests that RNA binding proteins like AUF1 may underlie the sex specific effects on DRG gene expression that modulate behavioral hypersensitivity after repeated I/R injury. This study may aid in finding distinct receptor differences related to the evolution of acute to chronic ischemic muscle pain development between sexes.
Collapse
Affiliation(s)
- Meranda M. Quijas
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Luis F. Queme
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Alex A. Weyler
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Ally Butterfield
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Diya P. Joshi
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Irati Mitxelena-Balerdi
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Michael P. Jankowski
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Pediatric Pain Research Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, OH, USA
| |
Collapse
|
5
|
Lee GJ, Porreca F, Navratilova E. Prolactin and pain of endometriosis. Pharmacol Ther 2023; 247:108435. [PMID: 37169264 DOI: 10.1016/j.pharmthera.2023.108435] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/26/2023] [Accepted: 05/02/2023] [Indexed: 05/13/2023]
Abstract
Women experience chronic pain more often than men with some pain conditions being specific to women while others are more prevalent in women. Prolactin, a neuropeptide hormone with higher serum levels in women, has recently been demonstrated in preclinical studies to sensitize nociceptive sensory neurons in a sexually dimorphic manner. Dysregulation of prolactin and prolactin receptors may be responsible for increased pain especially in female predominant conditions such as migraine, fibromyalgia, and pelvic pain. In this review, we focus on the role of prolactin in endometriosis, a condition characterized by pelvic pain and infertility that affects a large proportion of women during their reproductive age. We discuss the symptoms and pathology of endometriosis and discuss how different sources of prolactin secretion may contribute to this disease. We highlight our current understanding of prolactin-mediated mechanisms of nociceptor sensitization in females and how this mechanism may apply to endometriosis. Lastly, we report the results of a systematic review of clinical studies conducted by searching the PubMed and EMBASE databases to identify association between endometriosis and blood levels of prolactin. The results of this search strongly indicate that serum prolactin levels are increased in patients with endometriosis and support the possibility that high levels of prolactin may promote pelvic pain in these patients and increase vulnerability to other comorbid pain conditions likely by dysregulating prolactin receptor expression. Targeting of prolactin and prolactin receptors may improve management of pain associated with endometriosis.
Collapse
Affiliation(s)
- Grace J Lee
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA.
| |
Collapse
|
6
|
Szewczyk AK, Ulutas S, Aktürk T, Al-Hassany L, Börner C, Cernigliaro F, Kodounis M, Lo Cascio S, Mikolajek D, Onan D, Ragaglini C, Ratti S, Rivera-Mancilla E, Tsanoula S, Villino R, Messlinger K, Maassen Van Den Brink A, de Vries T. Prolactin and oxytocin: potential targets for migraine treatment. J Headache Pain 2023; 24:31. [PMID: 36967387 PMCID: PMC10041814 DOI: 10.1186/s10194-023-01557-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/28/2023] [Indexed: 03/28/2023] Open
Abstract
Migraine is a severe neurovascular disorder of which the pathophysiology is not yet fully understood. Besides the role of inflammatory mediators that interact with the trigeminovascular system, cyclic fluctuations in sex steroid hormones are involved in the sex dimorphism of migraine attacks. In addition, the pituitary-derived hormone prolactin and the hypothalamic neuropeptide oxytocin have been reported to play a modulating role in migraine and contribute to its sex-dependent differences. The current narrative review explores the relationship between these two hormones and the pathophysiology of migraine. We describe the physiological role of prolactin and oxytocin, its relationship to migraine and pain, and potential therapies targeting these hormones or their receptors.In summary, oxytocin and prolactin are involved in nociception in opposite ways. Both operate at peripheral and central levels, however, prolactin has a pronociceptive effect, while oxytocin appears to have an antinociceptive effect. Therefore, migraine treatment targeting prolactin should aim to block its effects using prolactin receptor antagonists or monoclonal antibodies specifically acting at migraine-pain related structures. This action should be local in order to avoid a decrease in prolactin levels throughout the body and associated adverse effects. In contrast, treatment targeting oxytocin should enhance its signalling and antinociceptive effects, for example using intranasal administration of oxytocin, or possibly other oxytocin receptor agonists. Interestingly, the prolactin receptor and oxytocin receptor are co-localized with estrogen receptors as well as calcitonin gene-related peptide and its receptor, providing a positive perspective on the possibilities for an adequate pharmacological treatment of these nociceptive pathways. Nevertheless, many questions remain to be answered. More particularly, there is insufficient data on the role of sex hormones in men and the correct dosing according to sex differences, hormonal changes and comorbidities. The above remains a major challenge for future development.
Collapse
Affiliation(s)
- Anna K Szewczyk
- Doctoral School, Medical University of Lublin, Lublin, Poland
- Department of Neurology, Medical University of Lublin, Lublin, Poland
| | - Samiye Ulutas
- Department of Neurology, Kartal Dr. Lutfi Kirdar Research and Training Hospital, Istanbul, Turkey
| | - Tülin Aktürk
- Department of Neurology, Kartal Dr. Lutfi Kirdar Research and Training Hospital, Istanbul, Turkey
| | - Linda Al-Hassany
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Corinna Börner
- Department of Pediatrics - Dr. von Hauner Children's Hospital, LMU Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität München, Lindwurmstr. 4, 80337, Munich, Germany
- LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians-Universität München, Lindwurmstr. 4, 80337, Munich, Germany
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
- TUM-Neuroimaging Center, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Federica Cernigliaro
- Child Neuropsychiatry Unit Department, Pro.M.I.S.E. "G D'Alessandro, University of Palermo, 90133, Palermo, Italy
| | - Michalis Kodounis
- First Department of Neurology, Eginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Salvatore Lo Cascio
- Child Neuropsychiatry Unit Department, Pro.M.I.S.E. "G D'Alessandro, University of Palermo, 90133, Palermo, Italy
| | - David Mikolajek
- Department of Neurology, City Hospital Ostrava, Ostrava, Czech Republic
| | - Dilara Onan
- Spine Health Unit, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
| | - Chiara Ragaglini
- Neuroscience Section, Department of Applied Clinical Sciences and Biotechnology, University of L'Aquila, 67100, L'Aquila, Italy
| | - Susanna Ratti
- Neuroscience Section, Department of Applied Clinical Sciences and Biotechnology, University of L'Aquila, 67100, L'Aquila, Italy
| | - Eduardo Rivera-Mancilla
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Sofia Tsanoula
- Department of Neurology, 401 Military Hospital of Athens, Athens, Greece
| | - Rafael Villino
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Karl Messlinger
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Antoinette Maassen Van Den Brink
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Tessa de Vries
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | | |
Collapse
|
7
|
Maciuba S, Bowden GD, Stratton HJ, Wisniewski K, Schteingart CD, Almagro JC, Valadon P, Lowitz J, Glaser SM, Lee G, Dolatyari M, Navratilova E, Porreca F, Rivière PJ. Discovery and characterization of prolactin neutralizing monoclonal antibodies for the treatment of female-prevalent pain disorders. MAbs 2023; 15:2254676. [PMID: 37698877 PMCID: PMC10498814 DOI: 10.1080/19420862.2023.2254676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023] Open
Abstract
Prolactin (PRL) has recently been demonstrated to elicit female-selective nociceptor sensitization and increase pain-like behaviors in female animals. Here we report the discovery and characterization of first-in-class, humanized PRL neutralizing monoclonal antibodies (PRL mAbs). We obtained two potent and selective PRL mAbs, PL 200,031 and PL 200,039. PL 200,031 was engineered as human IgG1 whereas PL 200,039 was reformatted as human IgG4. Both mAbs have sub-nanomolar affinity for human PRL (hPRL) and produce concentration-dependent and complete inhibition of hPRL signaling at the hPRL receptor (hPRLR). These two PRL mAbs are selective for hPRL as they do not inhibit other hPRLR agonists such as human growth hormone or placental lactogen. They also cross-react with non-human primate PRL but not with rodent PRL. Further, both mAbs show long clearance half-lives after intravenous administration in FcRn-humanized mice. Consistent with their isotypes, these mAbs only differ in binding affinities to Fcγ receptors, as expected by design. Finally, PL 200,019, the murine parental mAb of PL 200,031 and PL 200,039, fully blocked stress-induced and PRL-dependent pain behaviors in female PRL-humanized mice, thereby providing in vivo preclinical proof-of-efficacy for PRL mAbs in mechanisms relevant to pain in females.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Grace Lee
- Department of Pharmacology, The University of Arizona, Tucson, AZ, USA
| | - Mahdi Dolatyari
- Department of Pharmacology, The University of Arizona, Tucson, AZ, USA
| | - Edita Navratilova
- Department of Pharmacology, The University of Arizona, Tucson, AZ, USA
| | - Frank Porreca
- Department of Pharmacology, The University of Arizona, Tucson, AZ, USA
| | | |
Collapse
|
8
|
Kaur S, Hickman TM, Lopez-Ramirez A, McDonald H, Lockhart LM, Darwish O, Averitt DL. Estrogen modulation of the pronociceptive effects of serotonin on female rat trigeminal sensory neurons is timing dependent and dosage dependent and requires estrogen receptor alpha. Pain 2022; 163:e899-e916. [PMID: 35121697 PMCID: PMC9288423 DOI: 10.1097/j.pain.0000000000002604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/28/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT The role of the major estrogen estradiol (E2) on orofacial pain conditions remains controversial with studies reporting both a pronociceptive and antinociceptive role of E2. E2 modulation of peripheral serotonergic activity may be one mechanism underlying the female prevalence of orofacial pain disorders. We recently reported that female rats in proestrus and estrus exhibit greater serotonin (5HT)-evoked orofacial nocifensive behaviors compared with diestrus and male rats. Further coexpression of 5HT 2A receptor mRNA in nociceptive trigeminal sensory neurons that express transient receptor potential vanilloid 1 ion channels contributes to pain sensitization. E2 may exacerbate orofacial pain through 5HT-sensitive trigeminal nociceptors, but whether low or high E2 contributes to orofacial pain and by what mechanism remains unclear. We hypothesized that steady-state exposure to a proestrus level of E2 exacerbates 5HT-evoked orofacial nocifensive behaviors in female rats, explored the transcriptome of E2-treated female rats, and determined which E2 receptor contributes to sensitization of female trigeminal sensory neurons. We report that a diestrus level of E2 is protective against 5HT-evoked orofacial pain behaviors, which increase with increasing E2 concentrations, and that E2 differentially alters several pain genes in the trigeminal ganglia. Furthermore, E2 receptors coexpressed with 5HT 2A and transient receptor potential vanilloid 1 and enhanced capsaicin-evoked signaling in the trigeminal ganglia through estrogen receptor α. Overall, our data indicate that low, but not high, physiological levels of E2 protect against orofacial pain, and we provide evidence that estrogen receptor α receptor activation, but not others, contributes to sensitization of nociceptive signaling in trigeminal sensory neurons.
Collapse
Affiliation(s)
- Sukhbir Kaur
- Department of Biology, Texas Woman’s University, Denton, TX 76204
| | | | | | - Hanna McDonald
- Department of Biology, Texas Woman’s University, Denton, TX 76204
| | | | - Omar Darwish
- Department of Mathematics and Computer Science, Texas Woman’s University, Denton, TX 76204
| | | |
Collapse
|
9
|
Austah ON, Lillis KV, Akopian AN, Harris SE, Grinceviciute R, Diogenes A. Trigeminal neurons control immune-bone cell interaction and metabolism in apical periodontitis. Cell Mol Life Sci 2022; 79:330. [PMID: 35639178 PMCID: PMC9156470 DOI: 10.1007/s00018-022-04335-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/24/2022] [Accepted: 04/28/2022] [Indexed: 12/14/2022]
Abstract
Abstract Apical periodontitis (AP) is an inflammatory disease occurring following tooth infection with distinct osteolytic activity. Despite increasing evidence that sensory neurons participate in regulation of non-neuronal cells, their role in the development of AP is largely unknown. We hypothesized that trigeminal ganglia (TG) Nav1.8+ nociceptors regulate bone metabolism changes in response to AP. A selective ablation of nociceptive neurons in Nav1.8Cre/Diphtheria toxin A (DTA)Lox mouse line was used to evaluate the development and progression of AP using murine model of infection-induced AP. Ablation of Nav1.8+ nociceptors had earlier progression of AP with larger osteolytic lesions. Immunohistochemical and RNAscope analyses demonstrated greater number of macrophages, T-cells, osteoclast and osteoblast precursors and an increased RANKL:OPG ratio at earlier time points among Nav1.8Cre/ DTALox mice. There was an increased expression of IL-1α and IL-6 within lesions of nociceptor-ablated mice. Further, co-culture experiments demonstrated that TG neurons promoted osteoblast mineralization and inhibited osteoclastic function. The findings suggest that TG Nav1.8+ neurons contribute to modulation of the AP development by delaying the influx of immune cells, promoting osteoblastic differentiation, and decreasing osteoclastic activities. This newly uncovered mechanism could become a therapeutic strategy for the treatment of AP and minimize the persistence of osteolytic lesions in refractory cases. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00018-022-04335-w.
Collapse
Affiliation(s)
- Obadah N Austah
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.,Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Katherine V Lillis
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Armen N Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Stephen E Harris
- Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Ruta Grinceviciute
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.
| |
Collapse
|
10
|
Watanabe M, Kopruszinski CM, Moutal A, Ikegami D, Khanna R, Chen Y, Ross S, Mackenzie K, Stratton J, Dodick DW, Navratilova E, Porreca F. Dysregulation of serum prolactin links the hypothalamus with female nociceptors to promote migraine. Brain 2022; 145:2894-2909. [PMID: 35325034 PMCID: PMC9890468 DOI: 10.1093/brain/awac104] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 02/17/2022] [Accepted: 03/13/2022] [Indexed: 02/04/2023] Open
Abstract
Migraine headache results from activation of meningeal nociceptors, however, the hypothalamus is activated many hours before the emergence of pain. How hypothalamic neural mechanisms may influence trigeminal nociceptor function remains unknown. Stress is a common migraine trigger that engages hypothalamic dynorphin/kappa opioid receptor (KOR) signalling and increases circulating prolactin. Prolactin acts at both long and short prolactin receptor isoforms that are expressed in trigeminal afferents. Following downregulation of the prolactin receptor long isoform, prolactin signalling at the prolactin receptor short isoform sensitizes nociceptors selectively in females. We hypothesized that stress may activate the kappa opioid receptor on tuberoinfundibular dopaminergic neurons to increase circulating prolactin leading to female-selective sensitization of trigeminal nociceptors through dysregulation of prolactin receptor isoforms. A mouse two-hit hyperalgesic priming model of migraine was used. Repeated restraint stress promoted vulnerability (i.e. first-hit priming) to a subsequent subthreshold (i.e. second-hit) stimulus from inhalational umbellulone, a TRPA1 agonist. Periorbital cutaneous allodynia served as a surrogate of migraine-like pain. Female and male KORCre; R26lsl-Sun1-GFP mice showed a high percentage of KORCre labelled neurons co-localized in tyrosine hydroxylase-positive cells in the hypothalamic arcuate nucleus. Restraint stress increased circulating prolactin to a greater degree in females. Stress-primed, but not control, mice of both sexes developed periorbital allodynia following inhalational umbellulone. Gi-DREADD activation (i.e. inhibition through Gi-coupled signalling) in KORCre neurons in the arcuate nucleus also increased circulating prolactin and repeated chemogenetic manipulation of these neurons primed mice of both sexes to umbellulone. Clustered regularly interspaced short palindromic repeats-Cas9 deletion of the arcuate nucleus KOR prevented restraint stress-induced prolactin release in female mice and priming from repeated stress episodes in both sexes. Inhibition of circulating prolactin occurred with systemic cabergoline, a dopamine D2 receptor agonist, blocked priming selectively in females. Repeated restraint stress downregulated the prolactin receptor long isoform in the trigeminal ganglia of female mice. Deletion of prolactin receptor in trigeminal ganglia by nasal clustered regularly interspaced short palindromic repeats-Cas9 targeting both prolactin receptor isoforms prevented stress-induced priming in female mice. Stress-induced activation of hypothalamic KOR increases circulating prolactin resulting in trigeminal downregulation of prolactin receptor long and pain responses to a normally innocuous TRPA1 stimulus. These are the first data that provide a mechanistic link between stress-induced hypothalamic activation and the trigeminal nociceptor effectors that produce trigeminal sensitization and migraine-like pain. This sexually dimorphic mechanism may help to explain female prevalence of migraine. KOR antagonists, currently in phase II clinical trials, may be useful as migraine preventives in both sexes, while dopamine agonists and prolactin/ prolactin receptor antibodies may improve therapy for migraine, and other stress-related neurological disorders, in females.
Collapse
Affiliation(s)
| | | | - Aubin Moutal
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Daigo Ikegami
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Rajesh Khanna
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Yanxia Chen
- Present address: The Solomon H. Snyder Department of Neuroscience, Department of Neurosurgery, Center for Sensory Biology, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - Sarah Ross
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Kimberly Mackenzie
- Teva Pharmaceutical Industries, Ltd., Biologics Discovery, Redwood City, CA 94063, USA
| | - Jennifer Stratton
- Teva Pharmaceutical Industries, Ltd., Biologics Discovery, Redwood City, CA 94063, USA
| | - David W Dodick
- Department of Neurology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Edita Navratilova
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Frank Porreca
- Correspondence to: Frank Porreca, PhD Department of Pharmacology University of Arizona College of Medicine Tucson AZ 85724, USA E-mail:
| |
Collapse
|
11
|
Sex-dependent pain trajectories induced by prolactin require an inflammatory response for pain resolution. Brain Behav Immun 2022; 101:246-263. [PMID: 35065194 PMCID: PMC9173405 DOI: 10.1016/j.bbi.2022.01.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/11/2022] [Accepted: 01/16/2022] [Indexed: 11/23/2022] Open
Abstract
Pain development and resolution patterns in many diseases are sex-dependent. This study aimed to develop pain models with sex-dependent resolution trajectories, and identify factors linked to resolution of pain in females and males. Using different intra-plantar (i.pl.) treatment protocols with prolactin (PRL), we established models with distinct, sex-dependent patterns for development and resolution of pain. An acute PRL-evoked pain trajectory, in which hypersensitivity is fully resolved within 1 day, showed substantial transcriptional changes after pain-resolution in female and male hindpaws and in the dorsal root ganglia (DRG). This finding supports the notion that pain resolution is an active process. Prolonged treatment with PRL high dose (1 μg) evoked mechanical hypersensitivity that resolved within 5-7 days in mice of both sexes and exhibited a pro-inflammatory transcriptional response in the hindpaw, but not DRG, at the time point preceding resolution. Flow cytometry analysis linked pro-inflammatory responses in female hindpaws to macrophages/monocytes, especially CD11b+/CD64+/MHCII+ cell accumulation. Prolonged low dose PRL (0.1 μg) treatment caused non-resolving mechanical hypersensitivity only in females. This effect was independent of sensory neuronal PRLR and was associated with a lack of immune response in the hindpaw, although many genes underlying tissue damage were affected. We conclude that different i.pl. PRL treatment protocols generates distinct, sex-specific pain hypersensitivity resolution patterns. PRL-induced pain resolution is preceded by a pro-inflammatory macrophage/monocyte-associated response in the hindpaws of mice of both sexes. On the other hand, the absence of a peripheral inflammatory response creates a permissive condition for PRL-induced pain persistency in females.
Collapse
|
12
|
Mason BN, Kallianpur R, Price TJ, Akopian AN, Dussor G. Prolactin signaling modulates stress-induced behavioral responses in a preclinical mouse model of migraine. Headache 2022; 62:11-25. [PMID: 34967003 PMCID: PMC8809368 DOI: 10.1111/head.14248] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/04/2021] [Accepted: 11/04/2021] [Indexed: 01/03/2023]
Abstract
OBJECTIVE The aim of this study was to determine if prolactin signaling modulates stress-induced behavioral responses in a preclinical migraine model. BACKGROUND Migraine is one of the most complex and prevalent disorders. The involvement of sex-selective hormones in migraine pathology is highly likely as migraine is more common in women and its frequency correlates with reproductive stages. Prolactin has been shown to be a worsening factor for migraine. Normally prolactin levels are low; however levels can surge during stress. Dopamine receptor agonists, which suppress pituitary prolactin release, are an effective migraine treatment in a subset of patients. Previously, we showed that administration of prolactin onto the dura mater induces female-specific behavioral responses, suggesting that prolactin may play a sex-specific role in migraine. METHODS The effects of prolactin signaling were assessed using a preclinical migraine model we published recently in which behavioral sensitization is induced by repeated stress. Plasma prolactin levels were assessed in naïve and stressed CD-1 mice (n = 3-5/group) and transgenic mice with conditional deletion of the Prlr in Nav1.8-positive sensory neurons (Prlr conditional knock-out [CKO]; n = 3/group). To assess the contribution of prolactin release during stress, naïve or stressed male and female CD-1 mice were treated with the prolactin release inhibitor bromocriptine (2 mg/kg; n = 7-12/group) or vehicle for 5 days (8-12/group) and tested for facial hypersensitivity following stress. Additionally, the contribution of ovarian hormones in regulating the prolactin-induced responses was assessed in ovariectomized female CD-1 mice (n = 6-10/group). Furthermore, the contribution of Prlr activation on Nav1.8-positive sensory neurons was assessed. Naïve or stressed male and female Prlr CKO mice and their control littermates were tested for facial hypersensitivity (n = 8-9/group). Immunohistochemistry was used to confirm loss of Prlr in Nav1.8-positive neurons in Prlr CKO mice. The total sample size is n = 245; the full analysis sample size is n = 221. RESULTS Stress significantly increased prolactin levels in vehicle-treated female mice (39.70 ± 2.77; p < 0.0001). Bromocriptine significantly reduced serum prolactin levels in stressed female mice compared to vehicle-treated mice (-44.85 ± 3.1; p < 0.0001). Additionally, no difference was detected between female stressed mice that received bromocriptine compared to naïve mice treated with bromocriptine (-0.70 ± 2.9; p = 0.995). Stress also significantly increased serum prolactin levels in male mice, although to a much smaller extent than in females (0.61 ± 0.08; p < 0.001). Bromocriptine significantly reduced serum prolactin levels in stressed males compared to those treated with vehicle (-0.49 ± 0.08; p = 0.002). Furthermore, bromocriptine attenuated stress-induced behavioral responses in female mice compared to those treated with vehicle (maximum effect observed on day 4 post stress [0.21 ± 0.08; p = 0.03]). Bromocriptine did not attenuate stress-induced behavior in males at any timepoint compared to those treated with vehicle. Moreover, loss of ovarian hormones did not affect the ability of bromocriptine to attenuate stress responses compared to vehicle-treated ovariectomy mice that were stressed (maximum effect observed on day 4 post stress [0.29 ± 0.078; p = 0.013]). Similar to CD-1 mice, stress increased serum prolactin levels in both Prlr CKO female mice (27.74 ± 9.96; p = 0.047) and control littermates (28.68 ± 9.9; p = 0.041) compared to their naïve counterparts. There was no significant increase in serum prolactin levels detected in male Prlr CKO mice or control littermates. Finally, conditional deletion of Prlr from Nav1.8-positive sensory neurons led to a female-specific attenuation of stress-induced behavioral responses (maximum effect observed on day 7 post stress [0.32 ± 0.08; p = 0.007]) compared to control littermates. CONCLUSION These data demonstrate that prolactin plays a female-specific role in stress-induced behavioral responses in this preclinical migraine model through activation of Prlr on sensory neurons. They also support a role for prolactin in migraine mechanisms in females and suggest that modulation of prolactin signaling may be an effective therapeutic strategy in some cases.
Collapse
Affiliation(s)
- Bianca N. Mason
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX USA
| | - Rohini Kallianpur
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX USA
| | - Theodore J. Price
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX USA
| | - Armen N. Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, TX USA
| | - Gregory Dussor
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX USA
| |
Collapse
|
13
|
Hornung RS, Raut NGR, Cantu DJ, Lockhart LM, Averitt DL. Sigma-1 receptors and progesterone metabolizing enzymes in nociceptive sensory neurons of the female rat trigeminal ganglia: A neural substrate for the antinociceptive actions of progesterone. Mol Pain 2022; 18:17448069211069255. [PMID: 35040378 PMCID: PMC8777333 DOI: 10.1177/17448069211069255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Orofacial pain disorders are predominately experienced by women. Progesterone, a major ovarian hormone, is neuroprotective and antinociceptive. We recently reported that progesterone attenuates estrogen-exacerbated orofacial pain behaviors, yet it remains unclear what anatomical substrate underlies progesterone's activity in the trigeminal system. Progesterone has been reported to exert protective effects through actions at intracellular progesterone receptors (iPR), membrane-progesterone receptors (mPR), or sigma 1 receptors (Sig-1R). Of these, the iPR and Sig-1R have been reported to have a role in pain. Progesterone can also have antinociceptive effects through its metabolite, allopregnanolone. Two enzymes, 5α-reductase and 3α-hydroxysteroid dehydrogenase (3α-HSD), are required for the metabolism of progesterone to allopregnanolone. Both progesterone and allopregnanolone rapidly attenuate pain sensitivity, implicating action of either progesterone at Sig-1R and/or conversion to allopregnanolone which targets GABAA receptors. In the present study, we investigated whether Sig-1 Rs are expressed in nociceptors within the trigeminal ganglia of cycling female rats and whether the two enzymes required for progesterone metabolism to allopregnanolone, 5α-reductase and 3α-hydroxysteroid dehydrogenase, are also present. Adult female rats from each stage of the estrous cycle were rapidly decapitated and the trigeminal ganglia collected. Trigeminal ganglia were processed by either fluorescent immunochemistry or western blotting to for visualization and quantification of Sig-1R, 5α-reductase, and 3α-hydroxysteroid dehydrogenase. Here we report that Sig-1Rs and both enzymes involved in progesterone metabolism are highly expressed in a variety of nociceptive sensory neuron populations in the female rat trigeminal ganglia at similar levels across the four stages of the estrous cycle. These data indicate that trigeminal sensory neurons are an anatomical substrate for the reported antinociceptive activity of progesterone via Sig-1R and/or conversion to allopregnanolone.
Collapse
Affiliation(s)
| | | | - Daisy J Cantu
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
| | - Lauren M Lockhart
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
| | - Dayna L Averitt
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
| |
Collapse
|
14
|
Ji J, He Q, Luo X, Bang S, Matsuoka Y, McGinnis A, Nackley AG, Ji RR. IL-23 Enhances C-Fiber-Mediated and Blue Light-Induced Spontaneous Pain in Female Mice. Front Immunol 2021; 12:787565. [PMID: 34950149 PMCID: PMC8688771 DOI: 10.3389/fimmu.2021.787565] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/08/2021] [Indexed: 12/30/2022] Open
Abstract
The incidence of chronic pain is especially high in women, but the underlying mechanisms remain poorly understood. Interleukin-23 (IL-23) is a pro-inflammatory cytokine and contributes to inflammatory diseases (e.g., arthritis and psoriasis) through dendritic/T cell signaling. Here we examined the IL-23 involvement in sexual dimorphism of pain, using an optogenetic approach in transgenic mice expressing channelrhodopsin-2 (ChR2) in TRPV1-positive nociceptive neurons. In situ hybridization revealed that compared to males, females had a significantly larger portion of small-sized (100-200 μm2) Trpv1+ neurons in dorsal root ganglion (DRG). Blue light stimulation of a hindpaw of transgenic mice induced intensity-dependent spontaneous pain. At the highest intensity, females showed more intense spontaneous pain than males. Intraplantar injection of IL-23 (100 ng) induced mechanical allodynia in females only but had no effects on paw edema. Furthermore, intraplantar IL-23 only potentiated blue light-induced pain in females, and intrathecal injection of IL-23 also potentiated low-dose capsaicin (500 ng) induced spontaneous pain in females but not males. IL-23 expresses in DRG macrophages of both sexes. Intrathecal injection of IL-23 induced significantly greater p38 phosphorylation (p-p38), a marker of nociceptor activation, in DRGs of female mice than male mice. In THP-1 human macrophages estrogen and chemotherapy co-application increased IL-23 secretion, and furthermore, estrogen and IL-23 co-application, but not estrogen and IL-23 alone, significantly increased IL-17A release. These findings suggest a novel role of IL-23 in macrophage signaling and female-dominant pain, including C-fiber-mediated spontaneous pain. Our study has also provided new insight into cytokine-mediated macrophage-nociceptor interactions, in a sex-dependent manner.
Collapse
Affiliation(s)
- Jasmine Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
- Neuroscience Department, Wellesley College, Wellesley, MA, United States
| | - Qianru He
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Xin Luo
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Sangsu Bang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Yutaka Matsuoka
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Aidan McGinnis
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Andrea G. Nackley
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
- Department of Cell Biology, Duke University Medical Center, Durham, NC, United States
- Department of Neurobiology, Duke University Medical Center, Durham, NC, United States
| |
Collapse
|
15
|
Navratilova E, Fillingim RB, Porreca F. Sexual dimorphism in functional pain syndromes. Sci Transl Med 2021; 13:eabj7180. [PMID: 34757805 DOI: 10.1126/scitranslmed.abj7180] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Sexual dimorphism in functional pain suggests the need of developing sex-specific therapies.
Collapse
Affiliation(s)
- Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | | | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA.,Mayo Clinic, Scottsdale, AZ 85259, USA
| |
Collapse
|
16
|
A link between migraine and prolactin: the way forward. Future Sci OA 2021; 7:FSO748. [PMID: 34737888 PMCID: PMC8558870 DOI: 10.2144/fsoa-2021-0047] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 08/23/2021] [Indexed: 12/31/2022] Open
Abstract
Migraine is an incapacitating neurological disorder that predominantly affects women. Sex and other hormones (e.g., oxytocin, and prolactin) may play a role in sexual dimorphic features of migraine. Initially, prolactin was recognized for its modulatory action in milk production and secretion; later, its roles in the regulation of the endocrine, immune and nervous systems were discovered. Higher prolactin levels in individuals with migraine were found in earlier studies, with a female sex-dominant trend. Studies that are more recent have identified that the expression of prolactin receptor in response to neuronal excitability and stress depends on sex with a dominant role in females. These findings have opened up potentials for explanation of sex-related pathophysiology of migraine, but have left some unanswered questions. This focused review examines the past and present of the link between prolactin and migraine, and presents open questions and directions for future experimental and clinical efforts. Sex hormones (e.g., estrogen and progesterone) have been investigated to explain the sex-related manifestation of migraine, which is predominant in females. Prolactin is known for promoting lactation, but accumulating evidence supports that it can promote pain in females. An increasing number of studies have shown that the expression of a prolactin receptor in female nociceptors and their responses to external stimuli such as stress are different, which can help explain the female sex-dominant feature of migraine. In this focused review, the current knowledge is presented and the directions where prolactin research in migraine may evolve are proposed. The ultimate goal is to shape an overview toward considering sex-based treatments for migraine with highlighting the role of prolactin.
Collapse
|
17
|
Dwivedi A, Padala C, Kumari A, Khumukcham SS, Penugurti V, Ghosh S, Mazumder A, Goffin V, Manavathi B. Hematopoietic PBX-interacting protein is a novel regulator of mammary epithelial cell differentiation. FEBS J 2021; 289:1575-1590. [PMID: 34668648 DOI: 10.1111/febs.16242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/06/2021] [Accepted: 10/19/2021] [Indexed: 12/16/2022]
Abstract
Hematopoietic PBX-interacting protein (HPIP, also known as PBXIP1) is an estrogen receptor (ER) interacting protein that regulates estrogen-mediated breast cancer cell proliferation and tumorigenesis. However, its functional significance in the context of mammary gland development is unexplored. Here, we report that HPIP is required for prolactin (PRL)-induced lactogenic differentiation in vitro. Molecular analysis of HPIP expression in mice revealed its induced expression at pregnancy and lactation stages of mammary gland. Moreover, PRL is a lactogenic hormone that controls pregnancy as well as lactation and induces Hpip/Pbxip1 expression in a signal transducer and activator of transcription 5a-dependent manner. Using mammary epithelial and lactogenic-competent cell lines, we further show that HPIP plays a regulatory role in PRL-mediated mammary epithelial cell differentiation, which is measured by acini formation, β-casein synthesis, and lipid droplet formation. Further mechanistic studies using pharmacological inhibitors revealed that HPIP modulates PRL-induced β-casein synthesis via phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) activation. This study also identified HPIP as a critical regulator of autocrine PRL signaling as treatment with the PRL receptor antagonist Δ1-9-G129R-hPRL restrained HPIP-mediated PRL synthesis, AKT activation, and β-casein synthesis in cultured HC11 cells. Interestingly, we also uncovered that microRNA-148a (miR-148a) antagonizes HPIP-mediated mammary epithelial cell differentiation. Together, our study identified HPIP as a critical regulator of PRL signaling and revealed a novel molecular circuitry involving PRL, HPIP, PI3K/AKT, and miR-148a that controls mammary epithelial cell differentiation in vitro.
Collapse
Affiliation(s)
- Anju Dwivedi
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, India
| | - Chiranjeevi Padala
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, India
| | - Anita Kumari
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, India
| | | | | | - Sinjini Ghosh
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, India
| | - Aprotim Mazumder
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, India
| | - Vincent Goffin
- Institut Necker Enfants Malades (INEM), Inserm U1151/CNRS 8253, Université de Paris, France
| | | |
Collapse
|
18
|
Ikegami D, Navratilova E, Yue X, Moutal A, Kopruszinski CM, Khanna R, Patwardhan A, Dodick DW, Porreca F. A prolactin-dependent sexually dimorphic mechanism of migraine chronification. Cephalalgia 2021; 42:197-208. [PMID: 34510920 DOI: 10.1177/03331024211039813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Determination of possible sex differences in mechanisms promoting migraine progression and the contribution of prolactin and the prolactin long (PRLR-L) and short (PRLR-S) receptor isoforms. BACKGROUND The majority of patients with chronic migraine and medication overuse headache are female. Prolactin is present at higher levels in women and increases migraine. Prolactin signaling at the PRLR-S selectively sensitizes nociceptors in female rodents, while expression of the PRLR-L is protective. METHODS Medication overuse headache was modeled by repeated sumatriptan administration in male and female mice. Periorbital and hindpaw cutaneous allodynia served as a surrogate of migraine-like pain. PRLR-L and PRLR-S isoforms were measured in the trigeminal ganglion with western blotting. Possible co-localization of PRLR with serotonin 5HT1B and 5HT1D receptors was determined with RNAscope. Cabergoline, a dopamine receptor agonist that inhibits circulating prolactin, was co-administered with sumatriptan. Nasal administration of CRISPR/Cas9 plasmid was used to edit expression of both PRLR isoforms. RESULTS PRLR was co-localized with 5HT1B or 5HT1D receptors in the ophthalmic region of female trigeminal ganglion. A single injection of sumatriptan increased serum PRL levels in female mice. Repeated sumatriptan promoted cutaneous allodynia in both sexes but down-regulated trigeminal ganglion PRLR-L, without altering PRLR-S, only in females. Co-administration of sumatriptan with cabergoline prevented allodynia and down-regulation of PRLR-L only in females. CRISPR/Cas9 editing of both PRLR isoforms in the trigeminal ganglion prevented sumatriptan-induced periorbital allodynia in females. INTERPRETATION We identified a sexually dimorphic mechanism of migraine chronification that involves down-regulation of PRLR-L and increased signaling of circulating prolactin at PRLR-S. These studies reveal a previously unrecognized neuroendocrine mechanism linking the hypothalamus to nociceptor sensitization that increases the risk of migraine pain in females and suggest opportunities for novel sex-specific therapies including gene editing through nasal delivery of CRISPR/Cas9 constructs.
Collapse
Affiliation(s)
- Daigo Ikegami
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724
| | - Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724.,Departments of Neurology and Neuroscience, Mayo Clinic, Scottsdale, AZ 85259
| | - Xu Yue
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724
| | - Aubin Moutal
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724
| | | | - Rajesh Khanna
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724
| | - Amol Patwardhan
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724
| | - David W Dodick
- Departments of Neurology and Neuroscience, Mayo Clinic, Scottsdale, AZ 85259
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724.,Departments of Neurology and Neuroscience, Mayo Clinic, Scottsdale, AZ 85259
| |
Collapse
|
19
|
Hovhannisyan AH, Son H, Mecklenburg J, Barba-Escobedo PA, Tram M, Gomez R, Shannonhouse J, Zou Y, Weldon K, Ruparel S, Lai Z, Tumanov AV, Kim YS, Akopian AN. Pituitary hormones are specifically expressed in trigeminal sensory neurons and contribute to pain responses in the trigeminal system. Sci Rep 2021; 11:17813. [PMID: 34497285 PMCID: PMC8426369 DOI: 10.1038/s41598-021-97084-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 08/20/2021] [Indexed: 11/29/2022] Open
Abstract
Trigeminal (TG), dorsal root (DRG), and nodose/jugular (NG/JG) ganglia each possess specialized and distinct functions. We used RNA sequencing of two-cycle sorted Pirt-positive neurons to identify genes exclusively expressing in L3-L5 DRG, T10-L1 DRG, NG/JG, and TG mouse ganglion neurons. Transcription factor Phox2b and Efcab6 are specifically expressed in NG/JG while Hoxa7 is exclusively present in both T10-L1 and L3-L5 DRG neurons. Cyp2f2, Krt18, and Ptgds, along with pituitary hormone prolactin (Prl), growth hormone (Gh), and proopiomelanocortin (Pomc) encoding genes are almost exclusively in TG neurons. Immunohistochemistry confirmed selective expression of these hormones in TG neurons and dural nerves; and showed GH expression in subsets of TRPV1+ and CGRP+ TG neurons. We next examined GH roles in hypersensitivity in the spinal versus trigeminal systems. Exogenous GH produced mechanical hypersensitivity when injected intrathecally, but not intraplantarly. GH-induced thermal hypersensitivity was not detected in the spinal system. GH dose-dependently generated orofacial and headache-like periorbital mechanical hypersensitivity after administration into masseter muscle and dura, respectively. Periorbital mechanical hypersensitivity was reversed by a GH receptor antagonist, pegvisomant. Overall, pituitary hormone genes are selective for TG versus other ganglia somatotypes; and GH has distinctive functional significance in the trigeminal versus spinal systems.
Collapse
Affiliation(s)
- Anahit H Hovhannisyan
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
| | - Hyeonwi Son
- Departments of Oral and Maxillofacial Surgery, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, 78229, USA
| | - Jennifer Mecklenburg
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
| | - Priscilla Ann Barba-Escobedo
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
| | - Meilinn Tram
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
- Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
| | - Ruben Gomez
- Departments of Oral and Maxillofacial Surgery, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, 78229, USA
| | - John Shannonhouse
- Departments of Oral and Maxillofacial Surgery, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, 78229, USA
| | - Yi Zou
- Greehey Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, 78229, USA
| | - Korri Weldon
- Greehey Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, 78229, USA
| | - Shivani Ruparel
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA
- Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
| | - Zhao Lai
- Departments of Molecular Medicine, Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
- Greehey Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, 78229, USA
| | - Alexei V Tumanov
- Departments of Microbiology, Immunology and Molecular Genetics, Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
- Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
| | - Yu Shin Kim
- Departments of Oral and Maxillofacial Surgery, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, 78229, USA
- Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA
| | - Armen N Akopian
- Departments of Endodontics, The School of Dentistry, The University of Texas Health Science Center at San Antonio (UTHSCSA), 7703 Floyd Curl Drive, San Antonio, TX, 78229-3900, USA.
- Programs in Integrated Biomedical Sciences and Translational Sciences, The School of Medicine, UTHSCSA, San Antonio, TX, 78229, USA.
| |
Collapse
|
20
|
Luo X, Chen O, Wang Z, Bang S, Ji J, Lee SH, Huh Y, Furutani K, He Q, Tao X, Ko MC, Bortsov A, Donnelly CR, Chen Y, Nackley A, Berta T, Ji RR. IL-23/IL-17A/TRPV1 axis produces mechanical pain via macrophage-sensory neuron crosstalk in female mice. Neuron 2021; 109:2691-2706.e5. [PMID: 34473953 DOI: 10.1016/j.neuron.2021.06.015] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/16/2021] [Accepted: 06/14/2021] [Indexed: 12/16/2022]
Abstract
Although sex dimorphism is increasingly recognized as an important factor in pain, female-specific pain signaling is not well studied. Here we report that administration of IL-23 produces mechanical pain (mechanical allodynia) in female but not male mice, and chemotherapy-induced mechanical pain is selectively impaired in female mice lacking Il23 or Il23r. IL-23-induced pain is promoted by estrogen but suppressed by androgen, suggesting an involvement of sex hormones. IL-23 requires C-fiber nociceptors and TRPV1 to produce pain but does not directly activate nociceptor neurons. Notably, IL-23 requires IL-17A release from macrophages to evoke mechanical pain in females. Low-dose IL-17A directly activates nociceptors and induces mechanical pain only in females. Finally, deletion of estrogen receptor subunit α (ERα) in TRPV1+ nociceptors abolishes IL-23- and IL-17-induced pain in females. These findings demonstrate that the IL-23/IL-17A/TRPV1 axis regulates female-specific mechanical pain via neuro-immune interactions. Our study also reveals sex dimorphism at both immune and neuronal levels.
Collapse
Affiliation(s)
- Xin Luo
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA.
| | - Ouyang Chen
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA; Department of Cell Biology, Duke University Medical Center, Durham, NC, USA
| | - Zilong Wang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Sangsu Bang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Jasmine Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Sang Hoon Lee
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Yul Huh
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA; Department of Cell Biology, Duke University Medical Center, Durham, NC, USA
| | - Kenta Furutani
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Qianru He
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Xueshu Tao
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Mei-Chuan Ko
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Andrey Bortsov
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Christopher R Donnelly
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Yong Chen
- Department of Neurology, Duke University Medical Center, Durham, NC, USA
| | - Andrea Nackley
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, USA
| | - Temugin Berta
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA; Department of Cell Biology, Duke University Medical Center, Durham, NC, USA; Department of Neurobiology, Duke University Medical Center, Durham, NC, USA.
| |
Collapse
|
21
|
Lenert ME, Avona A, Garner KM, Barron LR, Burton MD. Sensory Neurons, Neuroimmunity, and Pain Modulation by Sex Hormones. Endocrinology 2021; 162:bqab109. [PMID: 34049389 PMCID: PMC8237991 DOI: 10.1210/endocr/bqab109] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Indexed: 12/16/2022]
Abstract
The inclusion of women in preclinical pain studies has become more commonplace in the last decade as the National Institutes of Health (NIH) released its "Sex as a Biological Variable" mandate. Presumably, basic researchers have not had a comprehensive understanding about neuroimmune interactions in half of the population and how hormones play a role in this. To date, we have learned that sex hormones contribute to sexual differentiation of the nervous system and sex differences in behavior throughout the lifespan; however, the cycling of sex hormones does not always explain these differences. Here, we highlight recent advances in our understanding of sex differences and how hormones and immune interactions influence sensory neuron activity to contribute to physiology and pain. Neuroimmune mechanisms may be mediated by different cell types in each sex, as the actions of immune cells are sexually dimorphic. Unfortunately, the majority of studies assessing neuronal contributions to immune function have been limited to males, so it is unclear if the mechanisms are similar in females. Finally, pathways that control cellular metabolism, like nuclear receptors, have been shown to play a regulatory role both in pain and inflammation. Overall, communication between the neuroimmune and endocrine systems modulate pain signaling in a sex-dependent manner, but more research is needed to reveal nuances of these mechanisms.
Collapse
Affiliation(s)
- Melissa E Lenert
- Neuroimmunology and Behavior Laboratory, Center for Advanced Pain Studies (CAPS), Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Amanda Avona
- Neuroimmunology and Behavior Laboratory, Center for Advanced Pain Studies (CAPS), Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Katherine M Garner
- Neuroimmunology and Behavior Laboratory, Center for Advanced Pain Studies (CAPS), Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Luz R Barron
- Neuroimmunology and Behavior Laboratory, Center for Advanced Pain Studies (CAPS), Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Michael D Burton
- Neuroimmunology and Behavior Laboratory, Center for Advanced Pain Studies (CAPS), Department of Neuroscience, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas 75080, USA
| |
Collapse
|
22
|
Kaur S, McDonald H, Tongkhuya S, Lopez CM, Ananth S, Hickman TM, Averitt DL. Estrogen exacerbates the nociceptive effects of peripheral serotonin on rat trigeminal sensory neurons. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2021; 10:100073. [PMID: 34504982 PMCID: PMC8414175 DOI: 10.1016/j.ynpai.2021.100073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 11/21/2022]
Abstract
Orofacial pain disorders involving trigeminal sensory neurons disproportionately affect women and can be modulated by hormones, especially estrogen (E2). Proinflammatory mediators, like serotonin (5HT), can act on sensory neurons expressing the transient receptor potential vanilloid 1 (TRPV1) ion channel, resulting in peripheral sensitization. We previously reported peripheral 5HT evokes greater pain behaviors in the hindpaw of female rats during proestrus and estrus, stages when E2 fluctuates. It is unknown if this interaction is comparable in the trigeminal system. We hypothesized that E2 exacerbates 5HT-evoked nocifensive pain behaviors and pain signaling in female trigeminal sensory neurons. We report 5HT-evoked nocifensive behaviors are significantly higher during estrus and proestrus, which is attenuated by blocking the 5HT2A receptor. The comparable dose of 5HT was not nociceptive in males unless capsaicin was also administered. When administered with capsaicin, a lower dose of 5HT evoked trigeminal pain behaviors in females during proestrus. Further, basal 5HT content in the vibrissal pad was higher in cycling females compared to males. Ex vivo, E2 enhanced 5HT-potentiated CGRP release from trigeminal neurons, which was not significantly reduced by blocking the 5HT2A receptor. Our data indicates that estrogen fluctuation influences the pronociceptive effects of 5HT on trigeminal sensory neurons.
Collapse
Affiliation(s)
- Sukhbir Kaur
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Hanna McDonald
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Sirima Tongkhuya
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Cierra M.C. Lopez
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Sushmitha Ananth
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Taylor M. Hickman
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Dayna L. Averitt
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| |
Collapse
|
23
|
Chen Y, Moutal A, Navratilova E, Kopruszinski C, Yue X, Ikegami M, Chow M, Kanazawa I, Bellampalli SS, Xie J, Patwardhan A, Rice K, Fields H, Akopian A, Neugebauer V, Dodick D, Khanna R, Porreca F. The prolactin receptor long isoform regulates nociceptor sensitization and opioid-induced hyperalgesia selectively in females. Sci Transl Med 2021; 12:12/529/eaay7550. [PMID: 32024801 DOI: 10.1126/scitranslmed.aay7550] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 12/08/2019] [Indexed: 12/11/2022]
Abstract
Pain is more prevalent in women for reasons that remain unclear. We have identified a mechanism of injury-free nociceptor sensitization and opioid-induced hyperalgesia (OIH) promoted by prolactin (PRL) in females. PRL signals through mutually inhibitory long (PRLR-L) and short (PRLR-S) receptor isoforms, and PRLR-S activation induces neuronal excitability. PRL and PRLR expression were higher in females. CRISPR-mediated editing of PRLR-L promoted nociceptor sensitization and allodynia in naïve, uninjured female mice that depended on circulating PRL. Opioids, but not trauma-induced nerve injury, decreased PRLR-L promoting OIH through activation of PRLR-S in female mice. Deletion of both PRLR-L and PRLR-S (total PRLR) prevented, whereas PRLR-L overexpression rescued established OIH selectively in females. Inhibition of circulating PRL with cabergoline, a dopamine D2 agonist, up-regulated PRLR-L and prevented OIH only in females. The PRLR-L isoform therefore confers protection against PRL-promoted pain in females. Limiting PRL/PRLR-S signaling pharmacologically or with gene therapies targeting the PRLR may be effective for reducing pain in a female-selective manner.
Collapse
Affiliation(s)
- Yanxia Chen
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Aubin Moutal
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Edita Navratilova
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Caroline Kopruszinski
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Xu Yue
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Megumi Ikegami
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Michele Chow
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Iori Kanazawa
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Shreya Sai Bellampalli
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Jennifer Xie
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Amol Patwardhan
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Kenner Rice
- National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, USA
| | - Howard Fields
- Department of Neurology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Armen Akopian
- University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | | | - Rajesh Khanna
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Frank Porreca
- Department of Pharmacology, University of Arizona College of Medicine, Tucson, AZ 85724, USA. .,Mayo Clinic, Scottsdale, AZ 85752, USA
| |
Collapse
|
24
|
Avona A, Mason BN, Burgos-Vega C, Hovhannisyan AH, Belugin SN, Mecklenburg J, Goffin V, Wajahat N, Price TJ, Akopian AN, Dussor G. Meningeal CGRP-Prolactin Interaction Evokes Female-Specific Migraine Behavior. Ann Neurol 2021; 89:1129-1144. [PMID: 33749851 PMCID: PMC8195469 DOI: 10.1002/ana.26070] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Migraine is three times more common in women. CGRP plays a critical role in migraine pathology and causes female-specific behavioral responses upon meningeal application. These effects are likely mediated through interactions of CGRP with signaling systems specific to females. Prolactin (PRL) levels have been correlated with migraine attacks. Here, we explore a potential interaction between CGRP and PRL in the meninges. METHODS Prolactin, CGRP, and receptor antagonists CGRP8-37 or Δ1-9-G129R-hPRL were administered onto the dura of rodents followed by behavioral testing. Immunohistochemistry was used to examine PRL, CGRP and Prolactin receptor (Prlr) expression within the dura. Electrophysiology on cultured and back-labeled trigeminal ganglia (TG) neurons was used to assess PRL-induced excitability. Finally, the effects of PRL on evoked CGRP release from ex vivo dura were measured. RESULTS We found that dural PRL produced sustained and long-lasting migraine-like behavior in cycling and ovariectomized female, but not male rodents. Prlr was expressed on dural afferent nerves in females with little-to-no presence in males. Consistent with this, PRL increased excitability only in female TG neurons innervating the dura and selectively sensitized CGRP release from female ex vivo dura. We demonstrate crosstalk between PRL and CGRP systems as CGRP8-37 decreases migraine-like responses to dural PRL. Reciprocally, Δ1-9-G129R-hPRL attenuates dural CGRP-induced migraine behaviors. Similarly, Prlr deletion from sensory neurons significantly reduced migraine-like responses to dural CGRP. INTERPRETATION This CGRP-PRL interaction in the meninges is a mechanism by which these peptides could produce female-selective responses and increase the prevalence of migraine in women. ANN NEUROL 2021;89:1129-1144.
Collapse
Affiliation(s)
- Amanda Avona
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| | - Bianca N. Mason
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| | - Carolina Burgos-Vega
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| | - Anahit H. Hovhannisyan
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Sergei N. Belugin
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Jennifer Mecklenburg
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | | | - Naureen Wajahat
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| | - Theodore J. Price
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| | - Armen N. Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX
| | - Gregory Dussor
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX
| |
Collapse
|
25
|
Menendez JA, Peirce SK, Papadimitropoulou A, Cuyàs E, Steen TV, Verdura S, Vellon L, Chen WY, Lupu R. Progesterone receptor isoform-dependent cross-talk between prolactin and fatty acid synthase in breast cancer. Aging (Albany NY) 2020; 12:24671-24692. [PMID: 33335078 PMCID: PMC7803566 DOI: 10.18632/aging.202289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/27/2020] [Indexed: 04/13/2023]
Abstract
Progesterone receptor (PR) isoforms can drive unique phenotypes in luminal breast cancer (BC). Here, we hypothesized that PR-B and PR-A isoforms differentially modify the cross-talk between prolactin and fatty acid synthase (FASN) in BC. We profiled the responsiveness of the FASN gene promoter to prolactin in T47Dco BC cells constitutively expressing PR-A and PR-B, in the PR-null variant T47D-Y cell line, and in PR-null T47D-Y cells engineered to stably re-express PR-A (T47D-YA) or PR-B (T47D-YB). The capacity of prolactin to up-regulate FASN gene promoter activity in T47Dco cells was lost in T47D-Y and TD47-YA cells. Constitutively up-regulated FASN gene expression in T47-YB cells and its further stimulation by prolactin were both suppressed by the prolactin receptor antagonist hPRL-G129R. The ability of the FASN inhibitor C75 to decrease prolactin secretion was more conspicuous in T47-YB cells. In T47D-Y cells, which secreted notably less prolactin and downregulated prolactin receptor expression relative to T47Dco cells, FASN blockade resulted in an augmented secretion of prolactin and up-regulation of prolactin receptor expression. Our data reveal unforeseen PR-B isoform-specific regulatory actions in the cross-talk between prolactin and FASN signaling in BC. These findings might provide new PR-B/FASN-centered predictive and therapeutic modalities in luminal intrinsic BC subtypes.
Collapse
MESH Headings
- 4-Butyrolactone/analogs & derivatives
- 4-Butyrolactone/pharmacology
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Cell Line, Tumor
- Databases, Genetic
- Fatty Acid Synthase, Type I/antagonists & inhibitors
- Fatty Acid Synthase, Type I/genetics
- Fatty Acid Synthase, Type I/metabolism
- Humans
- Interleukin-6/metabolism
- Prolactin/metabolism
- Prolactin/pharmacology
- Promoter Regions, Genetic
- Protein Isoforms
- RNA, Messenger/metabolism
- Receptor Cross-Talk
- Receptors, Progesterone/genetics
- Receptors, Progesterone/metabolism
- Receptors, Prolactin/antagonists & inhibitors
- Receptors, Prolactin/genetics
- Receptors, Prolactin/metabolism
- Up-Regulation
Collapse
Affiliation(s)
- Javier A. Menendez
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | | | | | - Elisabet Cuyàs
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Travis Vander Steen
- Mayo Clinic, Division of Experimental Pathology, Department of Laboratory Medicine and Pathology, Rochester, MN 55905, USA
| | - Sara Verdura
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Luciano Vellon
- Stem Cells Laboratory, Institute of Biology and Experimental Medicine (IBYME-CONICET), Buenos Aires, Argentina
| | - Wen Y. Chen
- Department of Biological Sciences, Clemson University, Greenville, SC 29634, USA
| | - Ruth Lupu
- Mayo Clinic, Division of Experimental Pathology, Department of Laboratory Medicine and Pathology, Rochester, MN 55905, USA
- Mayo Clinic Minnesota, Department of Biochemistry and Molecular Biology Laboratory, Rochester, MN 55905, USA
- Mayo Clinic Cancer Center, Rochester, MN 55905, USA
| |
Collapse
|
26
|
Alelyani AA, Azar PS, Khan AA, Chrepa V, Diogenes A. Quantitative Assessment of Mechanical Allodynia and Central Sensitization in Endodontic Patients. J Endod 2020; 46:1841-1848. [DOI: 10.1016/j.joen.2020.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 09/02/2020] [Accepted: 09/09/2020] [Indexed: 02/08/2023]
|
27
|
Georgescu T, Ladyman SR, Brown RSE, Grattan DR. Acute effects of prolactin on hypothalamic prolactin receptor expressing neurones in the mouse. J Neuroendocrinol 2020; 32:e12908. [PMID: 33034148 DOI: 10.1111/jne.12908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 02/06/2023]
Abstract
In addition to its critical role in lactation, the anterior pituitary hormone prolactin also influences a broad range of other physiological processes. In particular, widespread expression of prolactin receptor (Prlr) in the brain has highlighted pleiotropic roles for prolactin in regulating neuronal function, including maternal behaviour, reproduction and energy balance. Research into the central actions of prolactin has predominately focused on effects on gene transcription via the canonical JAK2/STAT5; however, it is evident that prolactin can exert rapid actions to stimulate activity in specific populations of neurones. We aimed to investigate how widespread these rapid actions of prolactin are in regions of the brain with large populations of prolactin-sensitive neurones, and whether physiological state alters these responses. Using transgenic mice where the Cre-dependent calcium indicator, GCaMP6f, was conditionally expressed in cells expressing the long form of the Prlr, we monitored changes in levels of intracellular calcium ([Ca2+ ]i ) in ex vivo brain slice preparations as a surrogate marker of cellular activity. Here, we surveyed hypothalamic regions implicated in the diverse physiological functions of prolactin such as the arcuate (ARC) and paraventricular nuclei of the hypothalamus (PVN), as well as the medial preoptic area (MPOA). We observed that, in the ARC of males and in both virgin and lactating females, prolactin can exert rapid actions to stimulate neuronal activity in the majority of Prlr-expressing neurones. In the PVN and MPOA, we found a smaller subset of cells that rapidly respond to prolactin. In these brain regions, the effects we detected ranged from rapid or sustained increases in [Ca2+ ]i to inhibitory effects, indicating a heterogeneous nature of these Prlr-expressing populations. These results enhance our understanding of mechanisms by which prolactin acts on hypothalamic neurones and provide insights into how prolactin might influence neuronal circuits in the mouse brain.
Collapse
Affiliation(s)
- Teodora Georgescu
- Centre for Neuroendocrinology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Sharon R Ladyman
- Centre for Neuroendocrinology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Rosemary S E Brown
- Centre for Neuroendocrinology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - David R Grattan
- Centre for Neuroendocrinology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland, New Zealand
| |
Collapse
|
28
|
Neuroendocrine Mechanisms Governing Sex Differences in Hyperalgesic Priming Involve Prolactin Receptor Sensory Neuron Signaling. J Neurosci 2020; 40:7080-7090. [PMID: 32801151 DOI: 10.1523/jneurosci.1499-20.2020] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 01/17/2023] Open
Abstract
Many clinical and preclinical studies report higher prevalence and severity of chronic pain in females. We used hyperalgesic priming with interleukin 6 (IL-6) priming and PGE2 as a second stimulus as a model for pain chronicity. Intraplantar IL-6 induced hypersensitivity was similar in magnitude and duration in both males and females, while both paw and intrathecal PGE2 hypersensitivity was more persistent in females. This difference in PGE2 response was dependent on both circulating estrogen and translation regulation signaling in the spinal cord. In males, the duration of hypersensitivity was regulated by testosterone. Since the prolactin receptor (Prlr) is regulated by reproductive hormones and is female-selectively activated in sensory neurons, we evaluated whether Prlr signaling contributes to hyperalgesic priming. Using ΔPRL, a competitive Prlr antagonist, and a mouse line with ablated Prlr in the Nav1.8 sensory neuronal population, we show that Prlr in sensory neurons is necessary for the development of hyperalgesic priming in female, but not male, mice. Overall, sex-specific mechanisms in the initiation and maintenance of chronic pain are regulated by the neuroendocrine system and, specifically, sensory neuronal Prlr signaling.SIGNIFICANCE STATEMENT Females are more likely to experience chronic pain than males, but the mechanisms that underlie this sex difference are not completely understood. Here, we demonstrate that the duration of mechanical hypersensitivity is dependent on circulating sex hormones in mice, where estrogen caused an extension of sensitivity and testosterone was responsible for a decrease in the duration of the hyperalgesic priming model of chronic pain. Additionally, we demonstrated that prolactin receptor expression in Nav1.8+ neurons was necessary for hyperalgesic priming in female, but not male, mice. Our work demonstrates a female-specific mechanism for the promotion of chronic pain involving the neuroendrocrine system and mediated by sensory neuronal prolactin receptor.
Collapse
|
29
|
Chen Y, Navratilova E, Dodick DW, Porreca F. An Emerging Role for Prolactin in Female-Selective Pain. Trends Neurosci 2020; 43:635-648. [PMID: 32620290 DOI: 10.1016/j.tins.2020.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/20/2020] [Accepted: 06/03/2020] [Indexed: 12/15/2022]
Abstract
Women experience many pain conditions more frequently when compared with men, but the biological mechanisms underlying sex differences in pain remain poorly understood. In particular, little is known about possible sex differences in peripheral nociceptors, the fundamental building blocks of pain transmission. Emerging evidence reveals that prolactin (PRL) signaling at its cognate prolactin receptor (PRLR) in primary afferents promotes nociceptor sensitization and pain in a female-selective fashion. In this review, we summarize recent progress in understanding the female-selective role of PRL/PRLR in nociceptor sensitization and in pathological pain conditions, including postoperative, inflammatory, neuropathic, and migraine pain, as well as opioid-induced hyperalgesia. The clinical implications of the peripheral PRL/PRLR system for the discovery of new therapies for pain control in women are also discussed.
Collapse
Affiliation(s)
- Yanxia Chen
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA
| | - Edita Navratilova
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA; Mayo Clinic, Scottsdale, AZ, USA
| | | | - Frank Porreca
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA; Mayo Clinic, Scottsdale, AZ, USA.
| |
Collapse
|
30
|
Garami A, Shimansky YP, Rumbus Z, Vizin RCL, Farkas N, Hegyi J, Szakacs Z, Solymar M, Csenkey A, Chiche DA, Kapil R, Kyle DJ, Van Horn WD, Hegyi P, Romanovsky AA. Hyperthermia induced by transient receptor potential vanilloid-1 (TRPV1) antagonists in human clinical trials: Insights from mathematical modeling and meta-analysis. Pharmacol Ther 2020; 208:107474. [PMID: 31926897 DOI: 10.1016/j.pharmthera.2020.107474] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/23/2019] [Indexed: 02/06/2023]
Abstract
Antagonists of the transient receptor potential vanilloid-1 (TRPV1) channel alter body temperature (Tb) in laboratory animals and humans: most cause hyperthermia; some produce hypothermia; and yet others have no effect. TRPV1 can be activated by capsaicin (CAP), protons (low pH), and heat. First-generation (polymodal) TRPV1 antagonists potently block all three TRPV1 activation modes. Second-generation (mode-selective) TRPV1 antagonists potently block channel activation by CAP, but exert different effects (e.g., potentiation, no effect, or low-potency inhibition) in the proton mode, heat mode, or both. Based on our earlier studies in rats, only one mode of TRPV1 activation - by protons - is involved in thermoregulatory responses to TRPV1 antagonists. In rats, compounds that potently block, potentiate, or have no effect on proton activation cause hyperthermia, hypothermia, or no effect on Tb, respectively. A Tb response occurs when a TRPV1 antagonist blocks (in case of hyperthermia) or potentiates (hypothermia) the tonic TRPV1 activation by protons somewhere in the trunk, perhaps in muscles, and - via the acido-antithermogenic and acido-antivasoconstrictor reflexes - modulates thermogenesis and skin vasoconstriction. In this work, we used a mathematical model to analyze Tb data from human clinical trials of TRPV1 antagonists. The analysis suggests that, in humans, the hyperthermic effect depends on the antagonist's potency to block TRPV1 activation not only by protons, but also by heat, while the CAP activation mode is uninvolved. Whereas in rats TRPV1 drives thermoeffectors by mediating pH signals from the trunk, but not Tb signals, our analysis suggests that TRPV1 mediates both pH and thermal signals driving thermoregulation in humans. Hence, in humans (but not in rats), TRPV1 is likely to serve as a thermosensor of the thermoregulation system. We also conducted a meta-analysis of Tb data from human trials and found that polymodal TRPV1 antagonists (ABT-102, AZD1386, and V116517) increase Tb, whereas the mode-selective blocker NEO6860 does not. Several strategies of harnessing the thermoregulatory effects of TRPV1 antagonists in humans are discussed.
Collapse
Affiliation(s)
- Andras Garami
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary.
| | - Yury P Shimansky
- Department of Neurobiology, Barrow Neurological Institute, Dignity Health, Phoenix, AZ, USA
| | - Zoltan Rumbus
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Robson C L Vizin
- Thermoregulation and Systemic Inflammation Laboratory (FeverLab), Trauma Research, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, AZ, USA
| | - Nelli Farkas
- Institute for Translational Medicine, Medical School and Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Judit Hegyi
- Institute for Translational Medicine, Medical School and Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Zsolt Szakacs
- Institute for Translational Medicine, Medical School and Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Margit Solymar
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Alexandra Csenkey
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | | | | | | | - Wade D Van Horn
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| | - Peter Hegyi
- Institute for Translational Medicine, Medical School and Szentagothai Research Centre, University of Pecs, Pecs, Hungary; Department of Translational Medicine, First Department of Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Andrej A Romanovsky
- Thermoregulation and Systemic Inflammation Laboratory (FeverLab), Trauma Research, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, AZ, USA; School of Molecular Sciences, Arizona State University, Tempe, AZ, USA; Zharko Pharma Inc., Olympia, WA, USA.
| |
Collapse
|
31
|
Oliveira MDC, Barea LM, Horn APK, Ongaratti BR, Soares JOD, Araujo B, Santos TMD, Rech CL, Pereira-Lima JFS. Resolution of headache after reduction of prolactin levels in hyperprolactinemic patients. ARQUIVOS DE NEURO-PSIQUIATRIA 2020; 78:28-33. [PMID: 32074187 DOI: 10.1590/0004-282x20190143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/12/2019] [Indexed: 01/03/2023]
Abstract
METHODS Prolactin (PRL) secreting adenomas are associated with high incidence of headache. The role of hyperprolactinemia in the headache context is not clear, nor is the effect of its treatment on headache. The present longitudinal study evaluated hyperprolactinemic patients (69), in terms of presence and characteristics of headache before and after hyperprolactinemia treatment. RESULTS Headache was reported by 45 (65.2%) patients, independent of the etiology of hyperprolactinemia. The migraine phenotype was the most prevalent (66.6%). Medications used in the treatment of headache not changed during the study. The first line of treatment of hyperprolactinemia was dopaminergic agonists. In the last reevaluation, PRL level under treatment was within the reference range in 54.7% of the cases, and it was observed complete or partial resolution of the headache in 75% of the cases. The median PRL at this time in patients with complete headache resolution was 17 ng/mL, in those who reported partial recovery was 21 ng/mL, and in those in whom the headache did not change was 66 ng/mL, with a significant difference between the group with complete headache resolution vs. the group with unchanged headache (p=0.022). In the cases with complete headache resolution, the median fall on PRL levels was 89% and in those cases with partial headache resolution 86%, both significantly different (p<0.001) from the fall in the cases with an unchanged headache. CONCLUSION Data allow us to conclude that, in this series, in the majority of cases the reduction in the level of PRL was followe3d by cessation or relief of the pain.
Collapse
Affiliation(s)
- Miriam da Costa Oliveira
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Patologia, Porto Alegre RS, Brazil
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| | - Liselotte Menke Barea
- Universidade Federal de Ciências da Saúde de Porto Alegre, Departamento de Neurologia, Porto Alegre RS, Brazil
| | - Andreia Peres Klein Horn
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| | - Bárbara Roberta Ongaratti
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Patologia, Porto Alegre RS, Brazil
| | - José Otávio Dworzeki Soares
- Universidade Federal de Ciências da Saúde de Porto Alegre, Departamento de Neurologia, Porto Alegre RS, Brazil
| | - Bruna Araujo
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| | - Tainá Mafalda Dos Santos
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| | - Carolina Leães Rech
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| | - Júlia Fernanda Semmelmann Pereira-Lima
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Patologia, Porto Alegre RS, Brazil
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Centro de Neuroendocrinologia, Porto Alegre RS, Brazil
| |
Collapse
|
32
|
Patil M, Belugin S, Mecklenburg J, Wangzhou A, Paige C, Barba-Escobedo PA, Boyd JT, Goffin V, Grattan D, Boehm U, Dussor G, Price TJ, Akopian AN. Prolactin Regulates Pain Responses via a Female-Selective Nociceptor-Specific Mechanism. iScience 2019; 20:449-465. [PMID: 31627131 PMCID: PMC6818331 DOI: 10.1016/j.isci.2019.09.039] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/26/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023] Open
Abstract
Many clinical and preclinical studies report an increased prevalence and severity of chronic pain among females. Here, we identify a sex-hormone-controlled target and mechanism that regulates dimorphic pain responses. Prolactin (PRL), which is involved in many physiologic functions, induces female-specific hyperalgesia. A PRL receptor (Prlr) antagonist in the hind paw or spinal cord substantially reduced hyperalgesia in inflammatory models. This effect was mimicked by sensory neuronal ablation of Prlr. Although Prlr mRNA is expressed equally in female and male peptidergic nociceptors and central terminals, Prlr protein was found only in females and PRL-induced excitability was detected only in female DRG neurons. PRL-induced excitability was reproduced in male Prlr+ neurons after prolonged treatment with estradiol but was prevented with addition of a translation inhibitor. We propose a novel mechanism for female-selective regulation of pain responses, which is mediated by Prlr signaling in sensory neurons via sex-dependent control of Prlr mRNA translation. Local or spinal PRL injection induces hyperalgesia in a female-selective manner Sensory neuron Prlr regulates tissue injury-induced pain only in females PRL regulates excitability in Prlr+ neurons depending on sex and estrogen Regulation of Prlr translation defines female-selective neuronal excitability
Collapse
Affiliation(s)
- Mayur Patil
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; Department of Molecular Pharmacology and Physiology, University South Florida (USF), Tampa, FL 33612, USA
| | - Sergei Belugin
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA
| | - Jennifer Mecklenburg
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA
| | - Andi Wangzhou
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W Campbell Road, Richardson, TX 75080, USA
| | - Candler Paige
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W Campbell Road, Richardson, TX 75080, USA
| | - Priscilla A Barba-Escobedo
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA
| | - Jacob T Boyd
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; Department of Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | - David Grattan
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago School of Biomedical Sciences, Dunedin, New Zealand
| | - Ulrich Boehm
- Department of Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University School of Medicine, Homburg, Germany
| | - Gregory Dussor
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W Campbell Road, Richardson, TX 75080, USA
| | - Theodore J Price
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W Campbell Road, Richardson, TX 75080, USA.
| | - Armen N Akopian
- Department of Endodontics, The School of Dentistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA; Department of Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
| |
Collapse
|
33
|
Patil M, Hovhannisyan AH, Wangzhou A, Mecklenburg J, Koek W, Goffin V, Grattan D, Boehm U, Dussor G, Price TJ, Akopian AN. Prolactin receptor expression in mouse dorsal root ganglia neuronal subtypes is sex-dependent. J Neuroendocrinol 2019; 31:e12759. [PMID: 31231869 PMCID: PMC6939775 DOI: 10.1111/jne.12759] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/10/2019] [Accepted: 06/18/2019] [Indexed: 02/01/2023]
Abstract
Sensory neurones exhibit sex-dependent responsiveness to prolactin (PRL). This could contribute to sexual dimorphism in pathological pain conditions. The present study aimed to determine the mechanisms underlying sex-dependent PRL sensitivity in sensory neurones. A quantitative reverse transcriptase-polymerase chain reaction shows that prolactin receptor (Prlr) long and short isoform mRNAs are expressed at comparable levels in female and male mouse dorsal root ganglia (DRG). In Prlrcre/+ ;Rosa26LSL-tDTomato/+ reporter mice, percentages of Prlr+ sensory neurones in female and male DRG are also similar. Characterisation of Prlr+ DRG neurones using immunohistochemistry and electrophysiology revealed that Prlr+ DRG neurones are mainly peptidergic nociceptors in females and males. However, sensory neurone type-dependent expression of Prlr is sex dimorphic. Thus, Prlr+ populations fell into three small- and two medium-large-sized sensory neuronal groups. Prlr+ DRG neurones are predominantly medium-large sized in males and are proportionally more comprised of small-sized sensory neurones in females. Specifically, Prlr+ /IB4+ /CGRP+ neurones are four- to five-fold higher in numbers in female DRG. By contrast, Prlr+ /IB4- /CGRP+ /5HT3a+ /NPYR2- are predominant in male DRG. Prlr+ /IB4- /CGRP- , Prlr+ /IB4- /CGRP+ and Prlr+ /IB4- /CGRP+ /NPYR2+ neurones are evenly encountered in female and male DRG. These differences were confirmed using an independently generated single-cell sequencing dataset. Overall, we propose a novel mechanism by which sensory neurone type-dependent expression of Prlr could explain the unique sex dimorphism in responsiveness of nociceptors to PRL.
Collapse
Affiliation(s)
- Mayur Patil
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
| | - Anahit H. Hovhannisyan
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
| | - Andi Wangzhou
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, Richardson TX 75080
| | - Jennifer Mecklenburg
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
| | - Wouter Koek
- Departments of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
| | | | - David Grattan
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago School of Biomedical Sciences, Dunedin, New Zealand
| | - Ulrich Boehm
- Department of Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University School of Medicine, Homburg, Germany
| | - Gregory Dussor
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, Richardson TX 75080
| | - Theodore J. Price
- School of Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, Richardson TX 75080
- Corresponding authors:Armen N. Akopian, The School of Dentistry, University of Texas Health Science Center @ San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, Office: (210) 567-6668 Fax: (210) 567-3389 , Theodore J. Price School of Behavioral and Brain Sciences, University of Texas at Dallas, 800 W Campbell Rd, Richardson TX 75080, Office: (972) 883-4311
| | - Armen N. Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
- Departments of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
- Corresponding authors:Armen N. Akopian, The School of Dentistry, University of Texas Health Science Center @ San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, Office: (210) 567-6668 Fax: (210) 567-3389 , Theodore J. Price School of Behavioral and Brain Sciences, University of Texas at Dallas, 800 W Campbell Rd, Richardson TX 75080, Office: (972) 883-4311
| |
Collapse
|
34
|
Wu Y, Wang Y, Wang J, Fan Q, Zhu J, Yang L, Rong W. TLR4 mediates upregulation and sensitization of TRPV1 in primary afferent neurons in 2,4,6-trinitrobenzene sulfate-induced colitis. Mol Pain 2019; 15:1744806919830018. [PMID: 30672380 PMCID: PMC6378437 DOI: 10.1177/1744806919830018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Elevated excitability of primary afferent neurons underlies chronic pain in patients with functional or inflammatory bowel diseases. Recent studies have established an essential role for an enhanced transient receptor potential vanilloid subtype 1 (TRPV1) signaling in mediating peripheral hyperalgesia in inflammatory conditions. Since colocalization of Toll-like receptor 4 (TLR4) and TRPV1 has been observed in primary afferents including the trigeminal sensory neurons and the dorsal root ganglion neurons, we test the hypothesis that TLR4 might regulate the expression and function of TRPV1 in primary afferent neurons in 2,4,6-trinitrobenzene sulfate (TNBS)-induced colitis using the TLR4-deficient and the wild-type C57 mice. Despite having a higher disease activity index following administration of 2,4,6-trinitrobenzene sulfate, the TLR4-deficient mice showed less inflammatory infiltration in the colon than the wild-type mice. Increased expression of TLR4 and TRPV1 as well as increased density of capsaicin-induced TRPV1 current was observed in L4–S2 dorsal root ganglion neurons of the wild-type colitis mice till two weeks post 2,4,6-trinitrobenzene sulfate treatment. In comparison, the TLR4-deficient colitis mice had lower TRPV1 expression and TRPV1 current density in dorsal root ganglion neurons with lower abdominal withdrawal response scores during noxious colonic distensions. In the wild type but not in the TLR4-deficient dorsal root ganglion neurons, acute administration of the TLR4 agonist lipopolysaccharide increased the capsaicin-evoked TRPV1 current. In addition, we found that the canonical signaling downstream of TLR4 was activated in 2,4,6-trinitrobenzene sulfate-induced colitis in the wild type but not in the TLR4-deficient mice. These results indicate that TLR4 may play a major role in regulation of TRPV1 signaling and peripheral hyperalgesia in inflammatory conditions.
Collapse
Affiliation(s)
- Yingwei Wu
- 1 Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai, China.,2 Department of Radiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yingping Wang
- 1 Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Juan Wang
- 1 Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qi Fan
- 2 Department of Radiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jinyu Zhu
- 2 Department of Radiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Liu Yang
- 3 Core Laboratory, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weifang Rong
- 1 Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| |
Collapse
|
35
|
Wallis M. Molecular evolution of prolactin in Chiroptera: Accelerated evolution and a large insertion in vespertilionid bats. Gen Comp Endocrinol 2018; 269:102-111. [PMID: 30172709 DOI: 10.1016/j.ygcen.2018.08.021] [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: 07/16/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 11/15/2022]
Abstract
Pituitary prolactin (PRL) shows an episodic pattern of evolution in mammals, with a slow underlying rate (near stasis) and periods of rapid change in some groups. PRL evolution in bats, the second most speciose mammalian order, has not previously been studied, and is examined here. Slow basal evolution of PRL is seen in some bats, particularly megabats, but in most microbat groups evolution of PRL is more rapid. Accelerated evolution of PRL is particularly notable in the family Vespertilionidae, where analysis of nonsynonymous and synonymous substitutions indicates that it reflects adaptive evolution/positive selection. Remarkably, vespertilionid bats also show a large sequence insertion, of variable length, into exon 4 of PRL, giving a protein sequence 18-60 amino acids longer than normal, with the longest insertions in bats of the genus Myotis. An equivalent insertion has not been reported in PRL of any other vertebrate group. In the 3-dimensional structure of the complex between PRL and the extracellular domain (ecd) of its receptor (PRL:PRLR2) the inserted sequence is seen to be introduced in the short loop between helices 2 and 3 of PRL; it is far removed from the receptor-binding sites, and may not interfere with binding. The ecd of the receptor also shows variable rates of evolution, with a higher rate in the Vespertilionidae, but this is much less marked than for the hormone. The distribution of substitutions introduced into PRL during vespertilionid evolution appears to be non-random, and this and the evidence for positive selection suggests that the rapid evolution and insert sequence introduction were associated with a significant change in the biological properties of the hormone.
Collapse
Affiliation(s)
- Michael Wallis
- Biochemistry and Biomedicine Group, School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK.
| |
Collapse
|
36
|
Fejes-Szabó A, Spekker E, Tar L, Nagy-Grócz G, Bohár Z, Laborc KF, Vécsei L, Párdutz Á. Chronic 17β-estradiol pretreatment has pronociceptive effect on behavioral and morphological changes induced by orofacial formalin in ovariectomized rats. J Pain Res 2018; 11:2011-2021. [PMID: 30310305 PMCID: PMC6165783 DOI: 10.2147/jpr.s165969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background The prevalence of craniofacial pain disorders show sexual dimorphism with generally more common appearance in women suggesting the influence of estradiol, but the exact cause remains unknown. The common point in the pathogenesis of these disorders is the activation of trigeminal system. One of the animal experimental models of trigeminal activation is the orofacial formalin test, in which we investigated the effect of chronic 17β-estradiol pretreatment on the trigeminal pain-related behavior and activation of trigeminal second-order neurons at the level of spinal trigeminal nucleus pars caudalis (TNC). Methods Female Sprague Dawley rats were ovariectomized and silicone capsules were implanted subcutaneously containing cholesterol in the OVX group and 17β-estradiol and cholesterol in 1:1 ratio in the OVX+E2 group. We determined 17β-estradiol levels in serum after the implantation of capsules. Three weeks after operation, 50 µL of physiological saline or 1.5% of formalin solution was injected subcutaneously into the right whisker pad of rats. The time spent on rubbing directed to the injected area and c-Fos immunoreactivity in TNC was measured as the formalin-induced pain-related behavior, and as the marker of pain-related neuronal activation, respectively. Results The chronic 17β-estradiol pretreatment mimics the plasma levels of estrogen occurring in the proestrus phase and significantly increased the formalin-induced pain-related behavior and neuronal activation in TNC. Conclusion Our results demonstrate that the chronic 17β-estradiol treatment has strong pronociceptive effect on orofacial formalin-induced inflammatory pain suggesting modulatory action of estradiol on head pain through estrogen receptors, which are present in the trigeminal system.
Collapse
Affiliation(s)
| | - Eleonóra Spekker
- Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary,
| | - Lilla Tar
- Department of Neurology, University of Ulm, Ulm, Germany
| | - Gábor Nagy-Grócz
- MTA-SZTE Neuroscience Research Group, Szeged, Hungary, .,Faculty of Health Sciences and Social Studies, University of Szeged, Szeged, Hungary
| | - Zsuzsanna Bohár
- MTA-SZTE Neuroscience Research Group, Szeged, Hungary, .,Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary,
| | - Klaudia Flóra Laborc
- Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary, .,Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA
| | - László Vécsei
- MTA-SZTE Neuroscience Research Group, Szeged, Hungary, .,Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary,
| | - Árpád Párdutz
- Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary,
| |
Collapse
|
37
|
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.
Collapse
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
| |
Collapse
|
38
|
Yang H, Li X, Xue F, Xia Q, Zhao X, Wang D, Chen L, Cao H, Xu H, Shen X, Yuan W, Zhao X, Shi R, Zheng J. Local production of prolactin in lesions may play a pathogenic role in psoriatic patients and imiquimod-induced psoriasis-like mouse model. Exp Dermatol 2018; 27:1245-1253. [PMID: 30120801 DOI: 10.1111/exd.13772] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 08/15/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Hui Yang
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Xia Li
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Feng Xue
- Laboratory of Dermatoimmunology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Qunli Xia
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Xin Zhao
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Dixin Wang
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Lihong Chen
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Hua Cao
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Han Xu
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Xiaoyan Shen
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Weiru Yuan
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Xiaoqing Zhao
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Ruofei Shi
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Jie Zheng
- Department of Dermatology; Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| |
Collapse
|
39
|
Artero-Morales M, González-Rodríguez S, Ferrer-Montiel A. TRP Channels as Potential Targets for Sex-Related Differences in Migraine Pain. Front Mol Biosci 2018; 5:73. [PMID: 30155469 PMCID: PMC6102492 DOI: 10.3389/fmolb.2018.00073] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022] Open
Abstract
Chronic pain is one of the most debilitating human diseases and represents a social and economic burden for our society. Great efforts are being made to understand the molecular and cellular mechanisms underlying the pathophysiology of pain transduction. It is particularly noteworthy that some types of chronic pain, such as migraine, display a remarkable sex dimorphism, being up to three times more prevalent in women than in men. This gender prevalence in migraine appears to be related to sex differences arising from both gonadal and genetic factors. Indeed, the functionality of the somatosensory, immune, and endothelial systems seems modulated by sex hormones, as well as by X-linked genes differentially expressed during development. Here, we review the current data on the modulation of the somatosensory system functionality by gonadal hormones. Although this is still an area that requires intense investigation, there is evidence suggesting a direct regulation of nociceptor activity by sex hormones at the transcriptional, translational, and functional levels. Data are being accumulated on the effect of sex hormones on TRP channels such as TRPV1 that make pivotal contributions to nociceptor excitability and sensitization in migraine and other chronic pain syndromes. These data suggest that modulation of TRP channels' expression and/or activity by gonadal hormones provide novel pathways for drug intervention that may be useful for targeting the sex dimorphism observed in migraine.
Collapse
Affiliation(s)
- Maite Artero-Morales
- Instituto de Biología Molecular y Celular, Universitas Miguel Hernández, Elche, Spain
| | | | | |
Collapse
|
40
|
Yu CY, Abbott PV. Pulp microenvironment and mechanisms of pain arising from the dental pulp: From an endodontic perspective. AUST ENDOD J 2018. [DOI: 10.1111/aej.12257] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Christine Y. Yu
- Discipline of Endodontics; UWA Dental School; Oral Health Centre of Western Australia; The University of Western Australia (M512); Crawley Western Australia Australia
| | - Paul V. Abbott
- Discipline of Endodontics; UWA Dental School; Oral Health Centre of Western Australia; The University of Western Australia (M512); Crawley Western Australia Australia
| |
Collapse
|
41
|
Patil MJ, Hovhannisyan AH, Akopian AN. Characteristics of sensory neuronal groups in CGRP-cre-ER reporter mice: Comparison to Nav1.8-cre, TRPV1-cre and TRPV1-GFP mouse lines. PLoS One 2018; 13:e0198601. [PMID: 29864146 PMCID: PMC5986144 DOI: 10.1371/journal.pone.0198601] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 05/22/2018] [Indexed: 12/19/2022] Open
Abstract
Peptidergic sensory neurons play a critical role in nociceptive pathways. To precisely define the function and plasticity of sensory neurons in detail, new tools such as transgenic mouse models are needed. We employed electrophysiology and immunohistochemistry to characterize in detail dorsal root ganglion (DRG) neurons expressing an inducible CGRPcre-ER (CGRP-cre+); and compared them to DRG neurons expressing Nav1.8cre (Nav1.8-cre+), TRPV1cre (TRPV1-cre+) and TRPV1-GFP (V1-GFP+). Tamoxifen effectively induced CGRPcre-ER production in DRG. ≈87% of CGRPcre-ER-expressing neurons were co-labeled CGRP antibody. Three small and two medium-large-sized (5HT3a+/NPY2R- and NPY2R+) neuronal groups with unique electrophysiological profiles were CGRP-cre+. Nav1.8-cre+ neurons were detected in all CGRP-cre+ groups, as well as in 5 additional neuronal groups: MrgprD+/TRPA1-, MrgprD+/TRPA1+, TRPV1+/CGRP-, vGLUT3+ and ≈30% of trkC+ neurons. Differences between TRPV1cre and Nav1.8cre reporters were that unlike TRPV1-cre+, Nav1.8-cre+ expression was detected in non-nociceptive vGLUT3+ and trkC+ populations. Many TRPV1-cre+ neurons did not respond to capsaicin. In contrast, V1-GFP+ neurons were in 4 groups, each of which was capsaicin-sensitive. Finally, none of the analyzed reporter lines showed cre-recombination in trkB+, calbindin+, 70% of trkC+ or parvalbumin+ neurons, which together encompassed ≈20% of Nav1.8-cre- DRG neurons. The data presented here increases our knowledge of peptidergic sensory neuron characteristics, while showing the efficiency and specificity manipulation of peptidergic neurons by the CGRPcre-ER reporter. We also demonstrate that manipulation of all C- and A-nociceptors is better achieved with TRPV1-cre reporter. Finally, the described approach for detailed characterization of sensory neuronal groups can be applied to a variety of reporter mice.
Collapse
Affiliation(s)
- Mayur J. Patil
- Departments of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Anahit H. Hovhannisyan
- Departments of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Armen N. Akopian
- Departments of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
- Departments of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
- * E-mail:
| |
Collapse
|
42
|
Tomljenovic D, Baudoin T, Megla ZB, Geber G, Scadding G, Kalogjera L. Females have stronger neurogenic response than males after non-specific nasal challenge in patients with seasonal allergic rhinitis. Med Hypotheses 2018; 116:114-118. [PMID: 29857893 DOI: 10.1016/j.mehy.2018.04.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/16/2018] [Accepted: 04/24/2018] [Indexed: 01/13/2023]
Abstract
Epidemiological studies show female predominance in the prevalence of non- allergic rhinitis (NAR) and local allergic rhinitis (LAR). Experimental studies show female patients with allergic rhinitis (AR) demonstrate higher levels of sensitivity to irritants and airway hyperresponsiveness than males. Bronchial asthma shows female predominance in post-puberty patients, and gender interaction with severe asthma endotypes. Fibromyalgia, chronic fatigue syndrome, migraine and chronic cough, syndromes, which are commonly related to neurokinin substance P (SP) in the literature, also show strong female predominance. Studies have demonstrated that sex hormones, primarily oestrogens, affect mast cell activation. Mast cell proteases can amplify neurogenic inflammatory responses including the release of SP. Based on human epidemiological data and animal experimental data we hypothesized that female patients have different interaction between mast cell activation and neurogenic inflammation, i.e. substance P release, resulting in a different nasal symptom profile. To test the hypothesis we performed allergen and non-specific nasal challenges in patients with seasonal allergic rhinitis (SAR) out of season and looked for gender differences in subjective and objective responses. The interaction between subjective and objective reactivity was evaluated through the comparison of subjective symptom scores, concentrations of neurokinin substance P (SP) and cellular markers in nasal lavages after low doses of nasal allergen challenges. Female allergic subjects tended to have higher substance P (SP) concentrations both before and after non-specific challenges. The difference between post-allergen and post - hypertonic saline (HTS) challenge was highly significant in female patients (p = 0.001), while insignificant in male subjects (p = 0.14). Female patients had significantly stronger burning sensation after HTS challenge than male. These data indicate difference in the interaction between inflammatory cells and the neurogenic response, which is gender- related, and which may affect symptom profiles after challenges. Different regulation of neurogenic inflammation in females may have impact on symptoms and endotyping in respiratory disorders, not only in allergic rhinitis, but also asthma, chronic rhinosinusitis and irritant -induced cough.
Collapse
Affiliation(s)
- Dejan Tomljenovic
- ENT Dept, University Hospital Centre "Sestre milosrdnice", Zagreb School of Medicine Zagreb, Croatia.
| | - Tomislav Baudoin
- ENT Dept, University Hospital Centre "Sestre milosrdnice", Zagreb School of Medicine Zagreb, Croatia
| | | | - Goran Geber
- ENT Dept, University Hospital Centre "Sestre milosrdnice", Zagreb School of Medicine Zagreb, Croatia
| | | | - Livije Kalogjera
- ENT Dept, University Hospital Centre "Sestre milosrdnice", Zagreb School of Medicine Zagreb, Croatia
| |
Collapse
|
43
|
Gomes LO, Chichorro JG, Araya EI, de Oliveira J, Rae GA. Facial hyperalgesia due to direct action of endothelin-1 in the trigeminal ganglion of mice. J Pharm Pharmacol 2018; 70:893-900. [DOI: 10.1111/jphp.12905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 02/10/2018] [Indexed: 12/23/2022]
Abstract
Abstract
Objective
This study assessed the ability of endothelin-1 (ET-1) to evoke heat hyperalgesia when injected directly into the trigeminal ganglia (TG) of mice and determined the receptors implicated in this effect. The effects of TG ETA and ETB receptor blockade on alleviation of heat hyperalgesia in a model of trigeminal neuropathic pain induced by infraorbital nerve constriction (CION) were also examined.
Methods
Naive mice received an intraganglionar (i.g.) injection of ET-1 (0.3–3 pmol) or the selective ETBR agonist sarafotoxin S6c (3–30 pmol), and response latencies to ipsilateral heat stimulation were assessed before the treatment and at 1-h intervals up to 5 h after the treatment. Heat hyperalgesia induced by i.g. ET-1 or CION was assessed after i.g. injections of ETAR and ETBR antagonists (BQ-123 and BQ-788, respectively, each at 0.5 nmol).
Key findings
Intraganglionar ET-1 or sarafotoxin S6c injection induced heat hyperalgesia lasting 4 and 2 h, respectively. Heat hyperalgesia induced by ET-1 was attenuated by i.g. BQ-123 or BQ-788. On day 5 after CION, i.g. BQ-788 injection produced a more robust antihyperalgesic effect compared with BQ-123.
Conclusions
ET-1 injection into the TG promotes ETAR/ETBR-mediated facial heat hyperalgesia, and both receptors are clearly implicated in CION-induced hyperalgesia in the murine TG system.
Collapse
Affiliation(s)
- Lenyta Oliveira Gomes
- Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Juliana Geremias Chichorro
- Department of Pharmacology, Biological Sciences Sector, Federal University of Parana, Curitiba, Parana, Brazil
| | - Erika Ivanna Araya
- Department of Pharmacology, Biological Sciences Sector, Federal University of Parana, Curitiba, Parana, Brazil
| | - Jade de Oliveira
- Department of Biochemistry, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Giles Alexander Rae
- Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| |
Collapse
|
44
|
Payrits M, Sághy É, Cseko K, Pohóczky K, Bölcskei K, Ernszt D, Barabás K, Szolcsányi J, Ábrahám IM, Helyes Z, Szoke É. Estradiol Sensitizes the Transient Receptor Potential Vanilloid 1 Receptor in Pain Responses. Endocrinology 2017; 158:3249-3258. [PMID: 28977586 DOI: 10.1210/en.2017-00101] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/29/2017] [Indexed: 11/19/2022]
Abstract
Sex differences exist in chronic pain pathologies, and gonadal estradiol (E2) alters the pain sensation. The nocisensor transient receptor potential vanilloid 1 (TRPV1) receptor plays a critical role in triggering pain. Here we examined the impact of E2 on the function of TRPV1 receptor in mice sensory neurons in vitro and in vivo. Both mechano- and thermonociceptive thresholds of the plantar surface of the paw of female mice were significantly lower in proestrus compared with the estrus phase. These thresholds were higher in ovariectomized (OVX) mice and significantly lower in sham-operated mice in proestrus compared with the sham-operated mice in estrus phase. This difference was absent in TRPV1 receptor-deficient mice. Furthermore, E2 potentiated the TRPV1 receptor activation-induced mechanical hyperalgesia in OVX mice. Long pretreatment (14 hours) with E2 induced a significant increase in TRPV1 receptor messenger RNA expression and abolished the capsaicin-induced TRPV1 receptor desensitization in primary sensory neurons. The short E2 incubation (10 minutes) also prevented the desensitization, which reverted after coadministration of E2 and the tropomyosin-related kinase A (TrkA) receptor inhibitor. Our study provides in vivo and in vitro evidence for E2-induced TRPV1 receptor upregulation and sensitization mediated by TrkAR via E2-induced genomic and nongenomic mechanisms. The sensitization and upregulation of TRPV1 receptor by E2 in sensory neurons may explain the greater pain sensitivity in female mice.
Collapse
Affiliation(s)
- Maja Payrits
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Éva Sághy
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089, Budapest, Hungary
| | - Kata Cseko
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Krisztina Pohóczky
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Dávid Ernszt
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Department of Pharmaceutical Biotechnology, University of Pécs, Medical School, H-7624 Pécs, Hungary
| | - Klaudia Barabás
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Institute of Physiology, University of Pécs, Medical School, H-7624 Pécs, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - István M Ábrahám
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Institute of Physiology, University of Pécs, Medical School, H-7624 Pécs, Hungary
- MTA-PTE NAP B Molecular Neuroendocrinology Research Group-Hungary, H-7624 Pécs, Hungary
- Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
- MTA-PTE NAP B Chronic Pain Research Group-Hungary, H-7624 Pécs, Hungary
| | - Éva Szoke
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- MTA-PTE NAP B Chronic Pain Research Group-Hungary, H-7624 Pécs, Hungary
| |
Collapse
|
45
|
Pineyro MM, Sosa G, Finozzi MR, Stecker N, Pisabarro R, Belzarena MC. Chronic cluster-like headache in a patient with a macroprolactinoma presenting with falsely low prolactin levels: bromocriptine versus cabergoline? Clin Case Rep 2017; 5:1868-1873. [PMID: 29152289 PMCID: PMC5676261 DOI: 10.1002/ccr3.1208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/06/2017] [Accepted: 08/23/2017] [Indexed: 12/31/2022] Open
Abstract
Cluster‐like headache may be associated with pituitary tumors, mostly prolactinomas. Pituitary imaging and prolactin measurement should be assessed in patients presenting with cluster‐like headaches with atypical features or unsatisfactory response to treatment. Furthermore, large pituitary adenomas with moderate increase in prolactin levels should prompt prolactin dilutions to avoid “hook effect”.
Collapse
Affiliation(s)
- Maria M Pineyro
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| | - Gabriela Sosa
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| | - Maria R Finozzi
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| | - Natalia Stecker
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| | - Raul Pisabarro
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| | - Maria C Belzarena
- Clínica de Endocrinología y Metabolismo Hospital de Clínicas Facultad de Medicina Universidad de la República Montevideo Uruguay
| |
Collapse
|
46
|
Eskander MA, Takimoto K, Diogenes A. Evaluation of mesenchymal stem cell modulation of trigeminal neuronal responses to cold. Neuroscience 2017; 360:61-67. [PMID: 28757246 DOI: 10.1016/j.neuroscience.2017.07.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 07/17/2017] [Accepted: 07/18/2017] [Indexed: 01/09/2023]
Abstract
Tissue engineering protocols, such as regenerative endodontic procedures (REPs), comprise biologically based procedures designed to restore normal physiologic function. For REPs, the goal is reconstitution of the pulp-dentin complex by delivering mesenchymal stem cells (MSCs), including the stem cells of the apical papilla (SCAP) into a root canal system. Many patients regain cold sensitivity after REPs, but the mechanism is not understood. We hypothesized that SCAP modulate nociceptive function through a paracrine mechanism that activates cold-sensitive ion channels in neurons. We established a co-culture system with human SCAP and rat trigeminal (TG) sensory neurons in order to determine the effect of SCAP co-culture on neuronal responses using whole-cell patch-clamp electrophysiology. TG neurons co-cultured with SCAP demonstrated increased TRPA1-mediated (p<0.01) and TRPM8-mediated inward current densities (p<0.01) at 24h in co-culture. Cold stimulation to SCAP significantly increased ATP release (p<0.01), and supernatant collected after cold stimulation to SCAP was able to activate cultured TG neurons. Co-culture with SCAP significantly increased sustained ATP-evoked inward current density (p<0.05). These data suggest that SCAP release trophic factors that act on afferent neurons to enhance cold-sensitive ion channel activity.
Collapse
Affiliation(s)
- Michael A Eskander
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Koyo Takimoto
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
| |
Collapse
|
47
|
Robarge JD, Duarte DB, Shariati B, Wang R, Flockhart DA, Vasko MR. Aromatase inhibitors augment nociceptive behaviors in rats and enhance the excitability of sensory neurons. Exp Neurol 2016; 281:53-65. [PMID: 27072527 DOI: 10.1016/j.expneurol.2016.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 03/28/2016] [Accepted: 04/05/2016] [Indexed: 12/22/2022]
Abstract
Although aromatase inhibitors (AIs) are commonly used therapies for breast cancer, their use is limited because they produce arthralgia in a large number of patients. To determine whether AIs produce hypersensitivity in animal models of pain, we examined the effects of the AI, letrozole, on mechanical, thermal, and chemical sensitivity in rats. In ovariectomized (OVX) rats, administering a single dose of 1 or 5mg/kg letrozole significantly reduced mechanical paw withdrawal thresholds, without altering thermal sensitivity. Repeated injection of 5mg/kg letrozole in male rats produced mechanical, but not thermal, hypersensitivity that extinguished when drug dosing was stopped. A single dose of 5mg/kg letrozole or daily dosing of letrozole or exemestane in male rats also augmented flinching behavior induced by intraplantar injection of 1000nmol of adenosine 5'-triphosphate (ATP). To determine whether sensitization of sensory neurons contributed to AI-induced hypersensitivity, we evaluated the excitability of neurons isolated from dorsal root ganglia of male rats chronically treated with letrozole. Both small and medium-diameter sensory neurons isolated from letrozole-treated rats were more excitable, as reflected by increased action potential firing in response to a ramp of depolarizing current, a lower resting membrane potential, and a lower rheobase. However, systemic letrozole treatment did not augment the stimulus-evoked release of the neuropeptide calcitonin gene-related peptide (CGRP) from spinal cord slices, suggesting that the enhanced nociceptive responses were not secondary to an increase in peptide release from sensory endings in the spinal cord. These results provide the first evidence that AIs modulate the excitability of sensory neurons, which may be a primary mechanism for the effect of these drugs to augment pain behaviors in rats.
Collapse
Affiliation(s)
- Jason D Robarge
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Medicine, Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Djane B Duarte
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States; Laboratório de Farmacologia Molecular, Faculdade de Ciências da Saúde, Universidade de Brasília, Brazil.
| | - Behzad Shariati
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Ruizhong Wang
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - David A Flockhart
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Medicine, Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Michael R Vasko
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States.
| |
Collapse
|
48
|
Possible Recovery of Manifestation of Prolactin Receptor and Some of Its Target Proteins in the Liver and Kidney Cells of Female Rats after Relief of Cholestasis Complicated and Not Complicated by Hyperprolactinemia. Bull Exp Biol Med 2015. [DOI: 10.1007/s10517-015-2963-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
49
|
Liu TT, Qu ZW, Ren C, Gan X, Qiu CY, Hu WP. Prolactin potentiates the activity of acid-sensing ion channels in female rat primary sensory neurons. Neuropharmacology 2015; 103:174-82. [PMID: 26188144 DOI: 10.1016/j.neuropharm.2015.07.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 07/13/2015] [Accepted: 07/14/2015] [Indexed: 02/06/2023]
Abstract
Prolactin (PRL) is a polypeptide hormone produced and released from the pituitary and extrapituitary tissues. It regulates activity of nociceptors and causes hyperalgesia in pain conditions, but little is known the molecular mechanism. We report here that PRL can exert a potentiating effect on the functional activity of acid-sensing ion channels (ASICs), key sensors for extracellular protons. First, PRL dose-dependently increased the amplitude of ASIC currents with an EC50 of (5.89 ± 0.28) × 10(-8) M. PRL potentiation of ASIC currents was also pH dependent. Second, PRL potentiation of ASIC currents was blocked by Δ1-9-G129R-hPRL, a PRL receptor antagonist, and removed by intracellular dialysis of either protein kinase C inhibitor GF109203X, protein interacting with C-kinase 1(PICK1) inhibitor FSC-231, or PI3K inhibitor AS605240. Third, PRL altered acidosis-evoked membrane excitability of DRG neurons and caused a significant increase in the amplitude of the depolarization and the number of spikes induced by acid stimuli. Four, PRL exacerbated nociceptive responses to injection of acetic acid in female rats. Finally, PRL displayed a stronger effect on ASIC mediated-currents and nociceptive behavior in intact female rats than OVX female and male rats and thus modulation of PRL may be gender-dependent. These results suggest that PRL up-regulates the activity of ASICs and enhances ASIC mediated nociceptive responses in female rats, which reveal a novel peripheral mechanism underlying PRL involvement in hyperalgesia.
Collapse
Affiliation(s)
- Ting-Ting Liu
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China
| | - Zu-Wei Qu
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China
| | - Cuixia Ren
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China
| | - Xiong Gan
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China
| | - Chun-Yu Qiu
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China.
| | - Wang-Ping Hu
- Institute of Ion Channels, Department of Pharmacology, Hubei University of Science and Technology, 88 Xianning Road, Xianning 437100, Hubei, PR China.
| |
Collapse
|
50
|
Miclescu AA, Svahn M, Gordh TE. Evaluation of the protein biomarkers and the analgesic response to systemic methylene blue in patients with refractory neuropathic pain: a double-blind, controlled study. J Pain Res 2015. [PMID: 26213475 PMCID: PMC4509536 DOI: 10.2147/jpr.s84685] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim This study was carried out in patients with neuropathic pain in order to assess the analgesic effects and changes in protein biomarkers after the administration of methylene blue (MB), a diaminophenothiazine with antioxidant and anti-inflammatory properties, and with inhibitory effects on nitric oxide. Materials and methods Ten patients with chronic refractory neuropathic pain were randomized to receive either MB (10 mg/mL Methylthioninium chloride) 2 mg/kg (MB group) or MB 0.02 mg/kg (control group) infused over 60 minutes. Sensory function and pain (Numerical Rating Scale) were evaluated at baseline and at 60 minutes after the start of the infusion. The patients kept a pain diary during the next 24 hours and for the following 4 days. Plasma and urinary concentrations of 8-isoprostane-prostaglandin F2α (8-iso-PGF2α) and plasma protein biomarkers prior to and after the infusions were measured with radioimmunoassay and with proximity extension assay. Results A decrease of the Numerical Rating Scale at 60 minutes in comparison with baseline was observed in the MB (P=0.047) group. The decrease was significant between the MB and the control group on the day of and day after MB infusion (P=0.04 and P=0.008, respectively). There was no difference in systemic protein expressions between groups except for prolactin (PRL) (P=0.02). Three patients demonstrated diminished dynamic mechanical allodynia. Conclusion MB decreased the pain levels in patients with chronic therapy-resistant neuropathic pain on the first 2 days after administration. Known as an endocrine modulator on the anterior pituitary gland, MB infusion produced a decrease of PRL. The detailed role of PRL effects in chronic neuropathic pain remains undetermined.
Collapse
Affiliation(s)
- Adriana A Miclescu
- Multidisciplinary Pain Clinic, Uppsala University Hospital, Uppsala, Sweden
| | - Martin Svahn
- Multidisciplinary Pain Clinic, Uppsala University Hospital, Uppsala, Sweden
| | - Torsten E Gordh
- Multidisciplinary Pain Clinic, Uppsala University Hospital, Uppsala, Sweden ; Pain Research, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| |
Collapse
|