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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.
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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.
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2
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Banks CM, Trott JF, Hovey RC. The prolactin receptor: A cross-species comparison of gene structure, transcriptional regulation, tissue-specificity, and genetic variation. J Neuroendocrinol 2024:e13385. [PMID: 38586906 DOI: 10.1111/jne.13385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/25/2024] [Accepted: 03/13/2024] [Indexed: 04/09/2024]
Abstract
The conserved and multifaceted functions of prolactin (PRL) are coordinated through varied distribution and expression of its cell-surface receptor (PRLR) across a range of tissues and physiological states. The resultant heterogeneous expression of PRLR mRNA and protein across different organs and cell types supports a wide range of PRL-regulated processes including reproduction, lactation, development, and homeostasis. Genetic variation within the PRLR gene also accounts for several phenotypes impacting agricultural production and human pathology. The goal of this review is to highlight the many elements that control differential expression of the PRLR across tissues, and the various phenotypes that exist across species due to variation in the PRLR gene.
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Affiliation(s)
- Carmen M Banks
- Department of Animal Science, University of California, Davis, Davis, California, USA
| | - Josephine F Trott
- Department of Animal Science, University of California, Davis, Davis, California, USA
| | - Russell C Hovey
- Department of Animal Science, University of California, Davis, Davis, California, USA
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3
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Hovhannisyan AH, Lindquist KA, Belugin S, Mecklenburg J, Ibrahim T, Tram M, Corey TM, Salmon AB, Perez D, Ruparel S, Akopian AN. Sensory innervation of masseter, temporal and lateral pterygoid muscles in common marmosets. Sci Rep 2023; 13:23062. [PMID: 38155190 PMCID: PMC10754842 DOI: 10.1038/s41598-023-49882-9] [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: 04/26/2023] [Accepted: 12/13/2023] [Indexed: 12/30/2023] Open
Abstract
Myogenous temporomandibular disorders is associated with an increased responsiveness of nerves innervating the masseter (MM), temporal (TM), and lateral pterygoid muscles (LPM). This study aimed to examine sensory nerve types innervating MM, TM and LPM of adult non-human primate-common marmosets. Sensory nerves were localized in specific regions of these muscles. Pgp9.5, marker for all nerves, and NFH, a marker for A-fibers, showed that masticatory muscles were primarily innervated with A-fibers. The proportion of C- to A-fibers was highest in LPM, and lowest in MM. All C-fibers (pgp9.5+/NFH-) observed in masticatory muscles were peptidergic (CGRP+) and lacked mrgprD and CHRNA3, a silent nociceptive marker. TrpV1 was register in 17% of LPM nerves. All fibers in masticatory muscles were labeled with GFAP+, a myelin sheath marker. There were substantially more peptidergic A-fibers (CGRP+/NFH+) in TM and LPM compared to MM. MM, TM and LPM NFH+ fibers contained different percentages of trkC+ and parvalbumin+, but not trkB+ fibers. Tyrosine hydroxylase antibodies, which did not label TG, highlighted sympathetic fibers around blood vessels of the masticatory muscles. Overall, masticatory muscle types of marmosets have similarities and differences in innervation patterns.
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Affiliation(s)
- Anahit H Hovhannisyan
- Departments 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
| | - Karen A Lindquist
- Integrated Biomedical Sciences (IBMS) Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Sergei Belugin
- Departments 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
- Departments 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
| | - Tarek Ibrahim
- Departments 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
| | - Meilinn Tram
- Departments 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
- Integrated Biomedical Sciences (IBMS) Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Tatiana M Corey
- Departments of Laboratory Animal Resources, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Adam B Salmon
- Departments of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
- Sam and Ann Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
- South Texas Veterans Health Care System, Geriatric Research Education and Clinical Center San Antonio, San Antonio, TX, 78229, USA
| | - Daniel Perez
- Oral and Maxillofacial Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Shivani Ruparel
- Departments 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
- Integrated Biomedical Sciences (IBMS) Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
- Departments of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Armen N Akopian
- Departments 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.
- Integrated Biomedical Sciences (IBMS) Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.
- Departments of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.
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4
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Molina-Salinas G, Langley E, Cerbon M. Prolactin-induced neuroprotection against excitotoxicity is mediated via PI3K/AKT and GSK3β/NF-κB in primary cultures of hippocampal neurons. Peptides 2023; 166:171037. [PMID: 37301481 DOI: 10.1016/j.peptides.2023.171037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/15/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Prolactin (PRL) is a polypeptide hormone that has been reported to play a significant role in neuroprotection against neuronal excitotoxicity produced by glutamate (Glu) or kainic acid (KA) in both, in vitro and in vivo models. However, the molecular mechanisms involved in PRL's neuroprotective effects in the hippocampus have not been completely elucidated. The aim of the present study was to assess the signaling pathways involved in PRL neuroprotection against excitotoxicity. Primary rat hippocampal neuronal cell cultures were used to assess PRL-induced signaling pathway activation. The effects of PRL on neuronal viability, as well as its effects on activation of key regulatory pathways, phosphoinositide 3-kinases/Protein Kinase B (PI3K/AKT) and glycogen synthase kinase 3β / nuclear factor kappa B (GSK3β/NF-κB), were evaluated under conditions of Glutamate-induced excitotoxicity. Additionally, the effect on downstream regulated genes such as Bcl-2 and Nrf2, was assessed. Here, we show that the PI3K/AKT signaling pathway is activated by PRL treatment during excitotoxicity, promoting neuronal survival through upregulation of active AKT and GSK3β/NF-κB, resulting in induction of Bcl-2 and Nrf2 gene expression. Inhibition of the PI3K/AKT signaling pathway abrogated the protective effect of PRL against Glu-induced neuronal death. Overall, results indicate that the neuroprotective actions of PRL are mediated in part, by the activation of the AKT pathway and survival genes. Our data support the idea that PRL could be useful as a potential neuroprotective agent in different neurological and neurodegenerative diseases.
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Affiliation(s)
- G Molina-Salinas
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico
| | - E Langley
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, CDMX, México 14080, Mexico
| | - M Cerbon
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico.
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5
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Kopruszinski CM, Watanabe M, Martinez AL, Moreira de Souza LH, Dodick DW, Moutal A, Neugebauer V, Porreca F, Navratilova E. Kappa opioid receptor agonists produce sexually dimorphic and prolactin-dependent hyperalgesic priming. Pain 2023; 164:e263-e273. [PMID: 36625833 PMCID: PMC10285741 DOI: 10.1097/j.pain.0000000000002835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/21/2022] [Indexed: 01/11/2023]
Abstract
ABSTRACT Repeated stress produces hyperalgesic priming in preclinical models, but underlying mechanisms remain uncertain. As stress engages kappa opioid receptors (KORs), we hypothesized that repeated administration of KOR agonists might mimic, in part, stress-induced hyperalgesic priming. The potential contribution of circulating prolactin (PRL) and dysregulation of the expression of PRL receptor (PRLR) isoforms in sensory neurons after KOR agonist administration was also investigated. Mice received 3 daily doses of U-69593 or nalfurafine as a "first-hit" stimulus followed by assessment of periorbital tactile allodynia. Sixteen days after the first KOR agonist administration, animals received a subthreshold dose of inhalational umbellulone, a TRPA1 agonist, as the second-hit stimulus and periorbital allodynia was assessed. Cabergoline, a dopamine D2 receptor agonist, was used to inhibit circulating PRL in additional cohorts. Prolactin receptor isoforms were quantified in the V1 region of the trigeminal ganglion after repeated doses of U-69593. In both sexes, KOR agonists increased circulating PRL and produced allodynia that resolved within 14 days. Hyperalgesic priming, revealed by umbellulone-induced allodynia in animals previously treated with the KOR agonists, also occurred in both sexes. However, repeated U-69593 downregulated the PRLR long isoform in trigeminal neurons only in female mice. Umbellulone-induced allodynia was prevented by cabergoline co-treatment during priming with KOR agonists in female, but not male, mice. Hyperalgesic priming therefore occurs in both sexes after either biased or nonbiased KOR agonists. However, a PRL/PRLR-dependence is observed only in female nociceptors possibly contributing to pain in stress-related pain disorders in females.
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Affiliation(s)
- Caroline M. Kopruszinski
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Moe Watanabe
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Ashley L. Martinez
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Luiz Henrique Moreira de Souza
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - David W. Dodick
- Department of Neurology, Mayo Clinic, Phoenix, AZ, United States
| | - Aubin Moutal
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Volker Neugebauer
- Department of Pharmacology and Neuroscience and Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
- Department of Neurology, Mayo Clinic, Phoenix, AZ, United States
| | - Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States. Moutal is now with the Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, United States
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6
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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.
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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.
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7
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Hovhannisyan AH, Lindquist K, Belugin S, Mecklenburg J, Ibrahim T, Tram M, Corey T, Salmon A, Ruparel S, Ruparel S, Akopian A. Sensory innervation of masseter, temporal and lateral pterygoid muscles in common marmosets. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.10.528062. [PMID: 36798270 PMCID: PMC9934658 DOI: 10.1101/2023.02.10.528062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Myogenous temporomandibular disorders (TMDM) is associated with an increased responsiveness of nerves innervating the masseter (MM), temporal (TM), medial pterygoid (MPM) and lateral pterygoid muscles (LPM). This study aimed to examine sensory nerve types innervating MM, TM and LPM of adult non-human primate - common marmosets. Sensory nerves are localized in specific regions of these muscles. Pgp9.5, marker for all nerves, and NFH, a marker for A-fibers, showed that masticatory muscles were predominantly innervated with A-fibers. The proportion of C- to A-fibers was highest in LPM, and minimal (6-8%) in MM. All C-fibers (pgp9.5+/NFH-) observed in masticatory muscles were peptidergic (CGRP+) and lacked mrgprD, trpV1 and CHRNA3, a silent nociceptive marker. All fibers in masticatory muscles were labeled with GFAP+, a myelin sheath marker. There were substantially more peptidergic A-fibers (CGRP+/NFH+) in TM and LPM compared to MM. Almost all A-fibers in MM expressed trkC, with some of them having trkB and parvalbumin. In contrast, a lesser number of TM and LPM nerves expressed trkC, and lacked trkB. Tyrosine hydroxylase antibodies, which did not label TG, highlighted sympathetic fibers around blood vessels of the masticatory muscles. Overall, masticatory muscle types of marmosets have distinct and different innervation patterns.
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8
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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.
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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.
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9
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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.
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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
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10
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Sosa F, Santos JEP, Rae DO, Larson CC, Macchietto M, Abrahante JE, Amaral TF, Denicol AC, Sonstegard TS, Hansen PJ. Effects of the SLICK1 mutation in PRLR on regulation of core body temperature and global gene expression in liver in cattle. Animal 2022; 16:100523. [PMID: 35468510 DOI: 10.1016/j.animal.2022.100523] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 11/01/2022] Open
Abstract
The SLICK1 mutation in bovine PRLR (c.1382del; rs517047387) is a deletion mutation resulting in a protein with a truncated intracellular domain. Cattle carrying at least one allele have a phenotype characterized by a short hair coat (slick phenotype) and increased resistance to heat stress. Given the pleiotropic nature of prolactin, the mutation may affect other physiological characteristics. The liver is one organ that could potentially be affected because of the expression of PRLR. The mutation is a dominant allele, and heterozygous animals have a similar hair coat to that of animals homozygous for the mutation. Present objectives were to determine whether inheritance of the SLICK1 mutation affects liver gene expression and if animals homozygous for the SLICK1 allele differ from heterozygotes in liver gene expression and regulation of body temperature during heat stress. In one experiment, rectal and ruminal temperatures were less for Holstein heifers that were heterozygous for the SLICK1 allele compared with wildtype heifers. There were 71 differentially expressed genes in liver, with 13 upregulated and 58 downregulated in SLICK1 heterozygotes. Among the ontologies characteristic of differentially expressed genes were those related to immune function and fatty acid and amino acid metabolism. In a prospective cohort study conducted with adult Senepol cattle, body temperature and hepatic gene expression were compared between animals heterozygous or homozygous for the SLICK1 mutation. There were no differences in ruminal temperatures between genotypes, rectal temperature was higher in animals homozygous for the SLICK1 mutation, and there was only one gene in liver that was differentially expressed. It was concluded that inheritance of the SLICK1 allele can exert functional changes beyond those related to hair growth although changes in liver gene expression were not extensive. Results are also consistent with the SLICK1 allele being dominant because there were few differences in phenotype between animals inheriting one or two copies of the allele.
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Affiliation(s)
- Froylan Sosa
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL 32611-0910, USA
| | - José E P Santos
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL 32611-0910, USA
| | - D Owen Rae
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0136, USA
| | - Colleen C Larson
- Okeechobee County Cooperative Extension Service, University of Florida/Institute of Food and Agricultural Sciences, Okeechobee, FL 34972, USA
| | - Marissa Macchietto
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA
| | - Juan E Abrahante
- Informatics Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Thiago F Amaral
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL 32611-0910, USA
| | - Anna C Denicol
- Department of Animal Science, University of California Davis, Davis, CA 95616, USA
| | | | - Peter J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL 32611-0910, USA.
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11
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Unveiling the Pathogenesis of Adenomyosis through Animal Models. J Clin Med 2022; 11:jcm11061744. [PMID: 35330066 PMCID: PMC8953406 DOI: 10.3390/jcm11061744] [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: 02/10/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 02/08/2023] Open
Abstract
Background: Adenomyosis is a common gynecological disorder traditionally viewed as “elusive”. Several excellent review papers have been published fairly recently on its pathogenesis, and several theories have been proposed. However, the falsifiability, explanatory power, and predictivity of these theories are often overlooked. Since adenomyosis can occur spontaneously in rodents and many other species, the animal models may help us unveil the pathogenesis of adenomyosis. This review critically tallies experimentally induced models published so far, with a particular focus on their relevance to epidemiological findings, their possible mechanisms of action, and their explanatory and predictive power. Methods: PubMed was exhaustively searched using the phrase “adenomyosis and animal model”, “adenomyosis and experimental model”, “adenomyosis and mouse”, and “adenomyosis and rat”, and the resultant papers were retrieved, carefully read, and the resultant information distilled. All the retrieved papers were then reviewed in a narrative manner. Results: Among all published animal models of adenomyosis, the mouse model of adenomyosis induced by endometrial–myometrial interface disruption (EMID) seems to satisfy the requirements of falsifiability and has the predictive capability and also Hill’s causality criteria. Other theories only partially satisfy Hill’s criteria of causality. In particular, animal models of adenomyosis induced by hyperestrogenism, hyperprolactinemia, or long-term exposure to progestogens without much epidemiological documentation and adenomyosis is usually not the exclusive uterine pathology consequent to those induction procedures. Regardless, uterine disruption appears to be a necessary but not sufficient condition for causing adenomyosis. Conclusions: EMID is, however, unlikely the sole cause for adenomyosis. Future studies, including animal studies, are warranted to understand how and why in utero and/or prenatal exposure to elevated levels of estrogen or estrogenic compounds increases the risk of developing adenomyosis in adulthood, to elucidate whether prolactin plays any role in its pathogenesis, and to identify sufficient condition(s) that cause adenomyosis.
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12
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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.
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13
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Costa-Brito AR, Gonçalves I, Santos CRA. The brain as a source and a target of prolactin in mammals. Neural Regen Res 2022; 17:1695-1702. [PMID: 35017416 PMCID: PMC8820687 DOI: 10.4103/1673-5374.332124] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Prolactin is a polypeptide hormone associated with an extensive variety of biological functions. Among the roles of prolactin in vertebrates, some were preserved throughout evolution. This is the case of its function in the brain, where prolactin receptors, are expressed in different structures of the central nervous system. In the brain, prolactin actions are principally associated with reproduction and parental behavior, and involves the modulation of adult neurogenesis, neuroprotection, and neuroplasticity, especially during pregnancy, thereby preparing the brain to parenthood. Prolactin is mainly produced by specialized cells in the anterior pituitary gland. However, during vertebrate evolution many other extrapituitary tissues do also produce prolactin, like the immune system, endothelial cells, reproductive structures and in several regions of the brain. This review summarizes the relevance of prolactin for brain function, the sources of prolactin in the central nervous system, as well as its local production and secretion. A highlight on the impact of prolactin in human neurological diseases is also provided.
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Affiliation(s)
- Ana R Costa-Brito
- CICS-UBI - Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI - Health Sciences Research Centre; C4-UBI -Cloud Computing Competence Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Cecília R A Santos
- CICS-UBI - Health Sciences Research Centre; C4-UBI -Cloud Computing Competence Centre, Universidade da Beira Interior, Covilhã, Portugal
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14
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Noorjahan N, Cattini PA. Neurogenesis in the Maternal Rodent Brain: Impacts of Gestation-Related Hormonal Regulation, Stress, and Obesity. Neuroendocrinology 2022; 112:702-722. [PMID: 34510034 DOI: 10.1159/000519415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 09/02/2021] [Indexed: 11/19/2022]
Abstract
In order to maintain maternal behavior, it is important that the maternal rodent brain promotes neurogenesis. Maternal neurogenesis is altered by the dynamic shifts in reproductive hormone levels during pregnancy. Thus, lifestyle events such as gestational stress and obesity that can affect hormone production will affect neuroendocrine control of maternal neurogenesis. However, there is a lack of information about the regulation of maternal neurogenesis by placental hormones, which are key components of the reproductive hormonal profile during pregnancy. There is also little known about how maternal neurogenesis can be affected by health concerns such as gestational stress and obesity, and its relationship to peripartum mental health disorders. This review summarizes the changing levels of neurogenesis in mice and rats during gestation and postpartum as well as regulation of neurogenesis by pregnancy-related hormones. The influence of neurogenesis on maternal behavior is also discussed while bringing attention to the effect of health-related concerns during gestation, such as stress and obesity on neuroendocrine control of maternal neurogenesis. In doing so, this review identifies the gaps in the literature and specifically emphasizes the importance of further research on maternal brain physiology to address them.
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Affiliation(s)
- Noshin Noorjahan
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Peter A Cattini
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
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15
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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.
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16
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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.
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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
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17
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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.
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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.
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18
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Lindquist KA, Belugin S, Hovhannisyan AH, Corey TM, Salmon A, Akopian AN. Identification of Trigeminal Sensory Neuronal Types Innervating Masseter Muscle. eNeuro 2021; 8:ENEURO.0176-21.2021. [PMID: 34580157 PMCID: PMC8513531 DOI: 10.1523/eneuro.0176-21.2021] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/18/2021] [Accepted: 09/01/2021] [Indexed: 11/21/2022] Open
Abstract
Understanding masseter muscle (MM) innervation is critical for the study of cell-specific mechanisms of pain induced by temporomandibular disorder (TMDs) or after facial surgery. Here, we identified trigeminal (TG) sensory neuronal subtypes (MM TG neurons) innervating MM fibers, masseteric fascia, tendons, and adjusted tissues. A combination of patch clamp electrophysiology and immunohistochemistry (IHC) on TG neurons back-traced from reporter mouse MM found nine distinct subtypes of MM TG neurons. Of these neurons, 24% belonged to non-peptidergic IB-4+/TRPA1- or IB-4+/TRPA1+ groups, while two TRPV1+ small-sized neuronal groups were classified as peptidergic/CGRP+ One small-sized CGRP+ neuronal group had a unique electrophysiological profile and were recorded from Nav1.8- or trkC+ neurons. The remaining CGRP+ neurons were medium-sized, could be divided into Nav1.8-/trkC- and Nav1.8low/trkC+ clusters, and showed large 5HT-induced current. The final two MM TG neuronal groups were trkC+ and had no Nav1.8 and CGRP. Among MM TG neurons, TRPV1+/CGRP- (somatostatin+), tyrosine hydroxylase (TH)+ (C-LTMR), TRPM8+, MrgprA3+, or trkB+ (Aδ-LTMR) subtypes have not been detected. Masseteric muscle fibers, tendons and masseteric fascia in mice and the common marmoset, a new world monkey, were exclusively innervated by either CGRP+/NFH+ or CGRP-/NFH+ medium-to-large neurons, which we found using a Nav1.8-YFP reporter, and labeling with CGRP, TRPV1, neurofilament heavy chain (NFH) and pgp9.5 antibodies. These nerves were mainly distributed in tendon and at junctions of deep-middle-superficial parts of MM. Overall, the data presented here demonstrates that MM is innervated by a distinct subset of TG neurons, which have unique characteristics and innervation patterns.
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Affiliation(s)
- Karen A Lindquist
- Integrated Biomedical Sciences (IBMS) Program, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
| | - Sergei Belugin
- Endodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
| | - Anahit H Hovhannisyan
- Endodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
| | - Tatiana M Corey
- Laboratory Animal Resources Departments, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
| | - Adam Salmon
- Molecular Medicine, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
- Sam and Ann Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
- South Texas Veterans Health Care System, Geriatric Research Education and Clinical Center San Antonio, TX 78229
| | - Armen N Akopian
- Integrated Biomedical Sciences (IBMS) Program, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
- Endodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
- Pharmacology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
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19
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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.
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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
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20
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Valderhaug VD, Heiney K, Ramstad OH, Bråthen G, Kuan WL, Nichele S, Sandvig A, Sandvig I. Early functional changes associated with alpha-synuclein proteinopathy in engineered human neural networks. Am J Physiol Cell Physiol 2021; 320:C1141-C1152. [PMID: 33950697 DOI: 10.1152/ajpcell.00413.2020] [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] [Indexed: 11/22/2022]
Abstract
A patterned spread of proteinopathy represents a common characteristic of many neurodegenerative diseases. In Parkinson's disease (PD), misfolded forms of α-synuclein proteins accumulate in hallmark pathological inclusions termed Lewy bodies and Lewy neurites. Such protein aggregates seem to affect selectively vulnerable neuronal populations in the substantia nigra and to propagate within interconnected neuronal networks. Research findings suggest that these proteinopathic inclusions are present at very early time points in disease development, even before clear behavioral symptoms of dysfunction arise. In this study, we investigate the early pathophysiology developing after induced formation of such PD-related α-synuclein inclusions in a physiologically relevant in vitro setup using engineered human neural networks. We monitor the neural network activity using multielectrode arrays (MEAs) for a period of 3 wk following proteinopathy induction to identify associated changes in network function, with a special emphasis on the measure of network criticality. Self-organized criticality represents the critical point between resilience against perturbation and adaptational flexibility, which appears to be a functional trait in self-organizing neural networks, both in vitro and in vivo. We show that although developing pathology at early onset is not clearly manifest in standard measurements of network function, it may be discerned by investigating differences in network criticality states.
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Affiliation(s)
- Vibeke D Valderhaug
- Department of Neuromedicine and Movement Science, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Kristine Heiney
- Department of Computer Science, Faculty of Technology, Art and Design, Oslo Metropolitan University (OsloMet), Oslo, Norway
| | - Ola Huse Ramstad
- Department of Neuromedicine and Movement Science, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Geir Bråthen
- Department of Neuromedicine and Movement Science, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Wei-Li Kuan
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Stefano Nichele
- Department of Computer Science, Faculty of Technology, Art and Design, Oslo Metropolitan University (OsloMet), Oslo, Norway
| | - Axel Sandvig
- Department of Neuromedicine and Movement Science, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Neurology and Clinical Neurophysiology, St Olav's Hospital, Trondheim, Norway.,Department of Clinical Neurosciences, Umeå University Hospital, Umeå, Sweden.,Department of Rehabilitation Medicine, Umeå University Hospital, Umeå, Sweden.,Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden.,Clinical Sciences, Umeå University, Umeå, Sweden
| | - Ioanna Sandvig
- Department of Neuromedicine and Movement Science, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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21
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Decoding signaling pathways involved in prolactin-induced neuroprotection: A review. Front Neuroendocrinol 2021; 61:100913. [PMID: 33766566 DOI: 10.1016/j.yfrne.2021.100913] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 03/11/2021] [Accepted: 03/13/2021] [Indexed: 11/23/2022]
Abstract
It has been well recognized that prolactin (PRL), a pleiotropic hormone, has many functions in the brain, such as maternal behavior, neurogenesis, and neuronal plasticity, among others. Recently, it has been reported to have a significant role in neuroprotection against excitotoxicity. Glutamate excitotoxicity is a common alteration in many neurological and neurodegenerative diseases, leading to neuronal death. In this sense, several efforts have been made to decrease the progression of these pathologies. Despite various reports of PRL's neuroprotective effect against excitotoxicity, the signaling pathways that underlie this mechanism remain unclear. This review aims to describe the most recent and relevant studies on the molecular signaling pathways, particularly, PI3K/AKT, NF-κB, and JAK2/STAT5, which are currently under investigation and might be implicated in the molecular mechanisms that explain the PRL effects against excitotoxicity and neuroprotection. Remarkable neuroprotective effects of PRL might be useful in the treatment of some neurological diseases.
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22
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Flores-Fernández R, Aponte-López A, Suárez-Arriaga MC, Gorocica-Rosete P, Pizaña-Venegas A, Chávez-Sanchéz L, Blanco-Favela F, Fuentes-Pananá EM, Chávez-Rueda AK. Prolactin Rescues Immature B Cells from Apoptosis-Induced BCR-Aggregation through STAT3, Bcl2a1a, Bcl2l2, and Birc5 in Lupus-Prone MRL/lpr Mice. Cells 2021; 10:cells10020316. [PMID: 33557010 PMCID: PMC7913714 DOI: 10.3390/cells10020316] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/23/2021] [Accepted: 01/24/2021] [Indexed: 12/30/2022] Open
Abstract
Self-reactive immature B cells are eliminated through apoptosis by tolerance mechanisms, failing to eliminate these cells results in autoimmune diseases. Prolactin is known to rescue immature B cells from B cell receptor engagement-induced apoptosis in lupus-prone mice. The objective of this study was to characterize in vitro prolactin signaling in immature B cells, using sorting, PCR array, RT-PCR, flow cytometry, and chromatin immunoprecipitation. We found that all B cell maturation stages in bone marrow express the prolactin receptor long isoform, in both wild-type and MRL/lpr mice, but its expression increased only in the immature B cells of the latter, particularly at the onset of lupus. In these cells, activation of the prolactin receptor promoted STAT3 phosphorylation and upregulation of the antiapoptotic Bcl2a1a, Bcl2l2, and Birc5 genes. STAT3 binding to the promoter region of these genes was confirmed through chromatin immunoprecipitation. Furthermore, inhibitors of prolactin signaling and STAT3 activation abolished the prolactin rescue of self-engaged MRL/lpr immature B cells. These results support a mechanism in which prolactin participates in the emergence of lupus through the rescue of self-reactive immature B cell clones from central tolerance clonal deletion through the activation of STAT3 and transcriptional regulation of a complex network of genes related to apoptosis resistance.
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Affiliation(s)
- Rocio Flores-Fernández
- UIM en Inmunologia, Hospital de Pediatría, CMN SIGLO XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.F.-F.); (L.C.-S.); (F.B.-F.)
| | - Angélica Aponte-López
- Unidad de Investigación en Virología y Cáncer, Hospital Infantil de Mexico Federico Gómez, Mexico City 06720, Mexico; (A.A.-L.); (M.C.S.-A.)
- Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de Mexico, Mexico City 04510, Mexico
| | - Mayra C. Suárez-Arriaga
- Unidad de Investigación en Virología y Cáncer, Hospital Infantil de Mexico Federico Gómez, Mexico City 06720, Mexico; (A.A.-L.); (M.C.S.-A.)
- Laboratorio de Biotecnología y Bioinformática Genómica, ENCB, Instituto Politécnico Nacional, Mexico City 11340, Mexico
| | - Patricia Gorocica-Rosete
- Departamento de Investigación en Bioquímica, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosió Villegas”, Mexico City 14080, Mexico;
| | - Alberto Pizaña-Venegas
- Unidad de Investigación y Bioterio, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosió Villegas”, Mexico City 14080, Mexico;
| | - Luis Chávez-Sanchéz
- UIM en Inmunologia, Hospital de Pediatría, CMN SIGLO XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.F.-F.); (L.C.-S.); (F.B.-F.)
| | - Francico Blanco-Favela
- UIM en Inmunologia, Hospital de Pediatría, CMN SIGLO XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.F.-F.); (L.C.-S.); (F.B.-F.)
| | - Ezequiel M. Fuentes-Pananá
- Unidad de Investigación en Virología y Cáncer, Hospital Infantil de Mexico Federico Gómez, Mexico City 06720, Mexico; (A.A.-L.); (M.C.S.-A.)
- Correspondence: or (E.M.F.-P.); or (A.K.C.-R.); Tel.: +52-5544349663 (E.M.F.-P.); +52-555627694 (A.K.C.-R.)
| | - Adriana K. Chávez-Rueda
- UIM en Inmunologia, Hospital de Pediatría, CMN SIGLO XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.F.-F.); (L.C.-S.); (F.B.-F.)
- Correspondence: or (E.M.F.-P.); or (A.K.C.-R.); Tel.: +52-5544349663 (E.M.F.-P.); +52-555627694 (A.K.C.-R.)
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23
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Asad AS, Nicola Candia AJ, Gonzalez N, Zuccato CF, Seilicovich A, Candolfi M. The role of the prolactin receptor pathway in the pathogenesis of glioblastoma: what do we know so far? Expert Opin Ther Targets 2020; 24:1121-1133. [PMID: 32896197 DOI: 10.1080/14728222.2020.1821187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Introduction: Prolactin (PRL) and its receptor (PRLR) have been associated with the development of hormone-dependent tumors and have been detected in glioblastoma (GBM) biopsies. GBM is the most common and aggressive primary brain tumor in adults and the prognosis for patients is dismal; hence researchers are exploring the PRLR pathway as a therapeutic target in this disease. Areas covered: This paper explores the effects of PRLR activation on the biology of GBM, the correlation between PRL and PRLR expression and GBM progression and survival in male and female patients. Finally, we discuss how a better understanding of the PRLR pathway may allow the development of novel treatments for GBM. Expert opinion: We propose PRL and PRLR as potential prognosis biomarkers and therapeutic targets in GBM. Local administration of PRLR inhibitors using gene therapy may offer a beneficial strategy for targeting GBM cells disseminated in the non-neoplastic brain; however, efficacy and safety require careful and extensive evaluation. The data depicted herein underline the need to (i) improve our understanding of sexual dimorphism in GBM, and (ii) develop accurate preclinical models that take into consideration different hormonal contexts, specific genetic alterations, and tumor grades.
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Affiliation(s)
- Antonela S Asad
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
| | - Alejandro J Nicola Candia
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
| | - Nazareno Gonzalez
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
| | - Camila F Zuccato
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
| | - Adriana Seilicovich
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina.,departamento de Biología Celular e Histología, Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
| | - Marianela Candolfi
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires , Buenos Aires, Argentina
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24
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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.
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25
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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.
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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.
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26
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Abstract
A limited number of peripheral targets generate pain. Inflammatory mediators can sensitize these. The review addresses targets acting exclusively or predominantly on sensory neurons, mediators involved in inflammation targeting sensory neurons, and mediators involved in a more general inflammatory process, of which an analgesic effect secondary to an anti-inflammatory effect can be expected. Different approaches to address these systems are discussed, including scavenging proinflammatory mediators, applying anti-inflammatory mediators, and inhibiting proinflammatory or facilitating anti-inflammatory receptors. New approaches are contrasted to established ones; the current stage of progress is mentioned, in particular considering whether there is data from a molecular and cellular level, from animals, or from human trials, including an early stage after a market release. An overview of publication activity is presented, considering a IuPhar/BPS-curated list of targets with restriction to pain-related publications, which was also used to identify topics.
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Affiliation(s)
- Cosmin I Ciotu
- Center of Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Michael J M Fischer
- Center of Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria.
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27
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Effects of Dietary Supplementation of Lauric Acid on Lactation Function, Mammary Gland Development, and Serum Lipid Metabolites in Lactating Mice. Animals (Basel) 2020; 10:ani10030529. [PMID: 32235692 PMCID: PMC7143820 DOI: 10.3390/ani10030529] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/17/2020] [Accepted: 03/19/2020] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Milk secreted from mammary glands is an important nutrition source for offspring after parturition. Mammary gland development and lactation ability have important effects on the growth and health of the offspring. Many studies have demonstrated that external factors, including the environment and nutrition influence the development of mammary glands. Lauric acid is a fatty acid that has many nutritional and physiological properties. In this study, we investigated the effects of dietary supplementation of lauric acid on lactation function and mammary gland development in lactating mice. We found that dietary supplementation of lauric acid during lactation might enhance the mammary development to promote the lactation function of mice. Through the study of mice, we hoped that the results could be applied to animal feed development and animal breeding production. Abstract Our previous studies demonstrated that lauric acid (LA) stimulated mammary gland development during puberty. However, the roles of LA on lactation in mice remain indeterminate. Thus, the aim of this study was to investigate the effects of dietary LA supplementation on lactation functioning and to study the potential mechanisms during lactation. in vivo, there was no effect of 1% LA dietary supplementation during lactation on the feed intake or body weight of breast-feeding mice. However, maternal LA supplementation significantly expanded the number of mammary gland alveoli of mice during lactation and the average body weight of the offspring, suggesting that LA supplementation enhanced the development and lactation function of the mammary glands. in vitro, 100 μM of LA significantly increased the content of triglycerides (TG) in the cell supernatant of induced HC11 cells, however, with no effect on the expression of the genes associated with fatty acid synthesis. LA also activated the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. LA dietary supplementation significantly expanded the serum levels of lipid metabolites, including sphingomyelin and other metabolites with the sn-2 position of C12 and sn-1 position of C18 in the TG of the lactating mice. Taken together, dietary supplementation of LA during lactation could promote the lactation function of mice, which might be related to increasing the development of the mammary glands and alternation of serum lipid metabolites. These findings provided more theoretical and experimental basis for the application of lauric acid in the development of mammary glands and lactation function of lactating animals.
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28
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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
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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.
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29
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Price TJ, Gold MS. From Mechanism to Cure: Renewing the Goal to Eliminate the Disease of Pain. PAIN MEDICINE 2019; 19:1525-1549. [PMID: 29077871 DOI: 10.1093/pm/pnx108] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective Persistent pain causes untold misery worldwide and is a leading cause of disability. Despite its astonishing prevalence, pain is undertreated, at least in part because existing therapeutics are ineffective or cause intolerable side effects. In this review, we cover new findings about the neurobiology of pain and argue that all but the most transient forms of pain needed to avoid tissue damage should be approached as a disease where a cure can be the goal of all treatment plans, even if attaining this goal is not yet always possible. Design We reviewed the literature to highlight recent advances in the area of the neurobiology of pain. Results We discuss barriers that are currently hindering the achievement of this goal, as well as the development of new therapeutic strategies. We also discuss innovations in the field that are creating new opportunities to treat and even reverse persistent pain, some of which are in late-phase clinical trials. Conclusion We conclude that the confluence of new basic science discoveries and development of new technologies are creating a path toward pain therapeutics that should offer significant hope of a cure for patients and practitioners alike. Classification of Evidence. Our review points to new areas of inquiry for the pain field to advance the goal of developing new therapeutics to treat chronic pain.
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Affiliation(s)
- Theodore J Price
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Dallas, Texas
| | - Michael S Gold
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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30
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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.
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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
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Cinel SD, Taylor SJ. Prolonged Bat Call Exposure Induces a Broad Transcriptional Response in the Male Fall Armyworm ( Spodoptera frugiperda; Lepidoptera: Noctuidae) Brain. Front Behav Neurosci 2019; 13:36. [PMID: 30863292 PMCID: PMC6399161 DOI: 10.3389/fnbeh.2019.00036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 02/11/2019] [Indexed: 12/22/2022] Open
Abstract
Predation risk induces broad behavioral and physiological responses that have traditionally been considered acute and transitory. However, prolonged or frequent exposure to predators and the sensory cues of their presence they broadcast to the environment impact long-term prey physiology and demographics. Though several studies have assessed acute and chronic stress responses in varied taxa, these attempts have often involved a priori expectations of the molecular pathways involved in physiological responses, such as glucocorticoid pathways and neurohormone production in vertebrates. While relatively little is known about physiological and molecular predator-induced stress in insects, many dramatic insect defensive behaviors have evolved to combat selection by predators. For instance, several moth families, such as Noctuidae, include members equipped with tympanic organs that allow the perception of ultrasonic bat calls and facilitate predation avoidance by eliciting evasive aerial flight maneuvers. In this study, we exposed adult male fall armyworm (Spodoptera frugiperda) moths to recorded ultrasonic bat foraging and attack calls for a prolonged period and constructed a de novo transcriptome based on brain tissue from predator cue-exposed relative to control moths kept in silence. Differential expression analysis revealed that 290 transcripts were highly up- or down-regulated among treatment tissues, with many annotating to noteworthy proteins, including a heat shock protein and an antioxidant enzyme involved in cellular stress. Though nearly 50% of differentially expressed transcripts were unannotated, those that were are implied in a broad range of cellular functions within the insect brain, including neurotransmitter metabolism, ionotropic receptor expression, mitochondrial metabolism, heat shock protein activity, antioxidant enzyme activity, actin cytoskeleton dynamics, chromatin binding, methylation, axonal guidance, cilia development, and several signaling pathways. The five most significantly overrepresented Gene Ontology terms included chromatin binding, macromolecular complex binding, glutamate synthase activity, glutamate metabolic process, and glutamate biosynthetic process. As a first assessment of transcriptional responses to ecologically relevant auditory predator cues in the brain of moth prey, this study lays the foundation for examining the influence of these differentially expressed transcripts on insect behavior, physiology, and life history within the framework of predation risk, as observed in ultrasound-sensitive Lepidoptera and other 'eared' insects.
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Affiliation(s)
- Scott D Cinel
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Insect Evolution, Behavior, and Genomics Lab, Florida Museum of Natural History, University of Florida, Gainesville, FL, United States
| | - Steven J Taylor
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Colorado College, Colorado Springs, CO, United States
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Dussor G, Boyd JT, Akopian AN. Pituitary Hormones and Orofacial Pain. Front Integr Neurosci 2018; 12:42. [PMID: 30356882 PMCID: PMC6190856 DOI: 10.3389/fnint.2018.00042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/06/2018] [Indexed: 12/15/2022] Open
Abstract
Clinical and basic research on regulation of pituitary hormones, extra-pituitary release of these hormones, distribution of their receptors and cell signaling pathways recruited upon receptor binding suggests that pituitary hormones can regulate mechanisms of nociceptive transmission in multiple orofacial pain conditions. Moreover, many pituitary hormones either regulate glands that produce gonadal hormones (GnH) or are regulated by GnH. This implies that pituitary hormones may be involved in sex-dependent mechanisms of orofacial pain and could help explain why certain orofacial pain conditions are more prevalent in women than men. Overall, regulation of nociception by pituitary hormones is a relatively new and emerging area of pain research. The aims of this review article are to: (1) present an overview of clinical conditions leading to orofacial pain that are associated with alterations of serum pituitary hormone levels; (2) discuss proposed mechanisms of how pituitary hormones could regulate nociceptive transmission; and (3) outline how pituitary hormones could regulate nociception in a sex-specific fashion. Pituitary hormones are routinely used for hormonal replacement therapy, while both receptor antagonists and agonists are used to manage certain pathological conditions related to hormonal imbalance. Administration of these hormones may also have a place in the treatment of pain, including orofacial pain. Hence, understanding the involvement of pituitary hormones in orofacial pain, especially sex-dependent aspects of such pain, is essential to both optimize current therapies as well as provide novel and sex-specific pharmacology for a diversity of associated conditions.
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Affiliation(s)
- Gregory Dussor
- School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Jacob T Boyd
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Armen N Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.,Department of Pharmcology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
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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
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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.
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Affiliation(s)
- Maite Artero-Morales
- Instituto de Biología Molecular y Celular, Universitas Miguel Hernández, Elche, Spain
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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.
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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:
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Tegge AN, Sharp N, Murali TM. Xtalk: a path-based approach for identifying crosstalk between signaling pathways. Bioinformatics 2015; 32:242-51. [PMID: 26400040 DOI: 10.1093/bioinformatics/btv549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 09/04/2015] [Indexed: 12/26/2022] Open
Abstract
MOTIVATION Cells communicate with their environment via signal transduction pathways. On occasion, the activation of one pathway can produce an effect downstream of another pathway, a phenomenon known as crosstalk. Existing computational methods to discover such pathway pairs rely on simple overlap statistics. RESULTS We present Xtalk, a path-based approach for identifying pairs of pathways that may crosstalk. Xtalk computes the statistical significance of the average length of multiple short paths that connect receptors in one pathway to the transcription factors in another. By design, Xtalk reports the precise interactions and mechanisms that support the identified crosstalk. We applied Xtalk to signaling pathways in the KEGG and NCI-PID databases. We manually curated a gold standard set of 132 crosstalking pathway pairs and a set of 140 pairs that did not crosstalk, for which Xtalk achieved an area under the receiver operator characteristic curve of 0.65, a 12% improvement over the closest competing approach. The area under the receiver operator characteristic curve varied with the pathway, suggesting that crosstalk should be evaluated on a pathway-by-pathway level. We also analyzed an extended set of 658 pathway pairs in KEGG and to a set of more than 7000 pathway pairs in NCI-PID. For the top-ranking pairs, we found substantial support in the literature (81% for KEGG and 78% for NCI-PID). We provide examples of networks computed by Xtalk that accurately recovered known mechanisms of crosstalk. AVAILABILITY AND IMPLEMENTATION The XTALK software is available at http://bioinformatics.cs.vt.edu/~murali/software. Crosstalk networks are available at http://graphspace.org/graphs?tags=2015-bioinformatics-xtalk. CONTACT ategge@vt.edu, murali@cs.vt.edu SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Allison N Tegge
- Department of Computer Science, Department of Statistics and
| | | | - T M Murali
- Department of Computer Science, ICTAS Center for Systems Biology of Engineered Tissues, Virginia Tech, Blacksburg, VA 24061, USA
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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.
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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.
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Patil MJ, Henry MA, Akopian AN. Prolactin receptor in regulation of neuronal excitability and channels. Channels (Austin) 2015; 8:193-202. [PMID: 24758841 DOI: 10.4161/chan.28946] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Prolactin (PRL) activates PRL receptor isoforms to exert regulation of specific neuronal circuitries, and to control numerous physiological and clinically-relevant functions including; maternal behavior, energy balance and food intake, stress and trauma responses, anxiety, neurogenesis, migraine and pain. PRL controls these critical functions by regulating receptor potential thresholds, neuronal excitability and/or neurotransmission efficiency. PRL also influences neuronal functions via activation of certain neurons, resulting in Ca(2+) influx and/or electrical firing with subsequent release of neurotransmitters. Although PRL was identified almost a century ago, very little specific information is known about how PRL regulates neuronal functions. Nevertheless, important initial steps have recently been made including the identification of PRL-induced transient signaling pathways in neurons and the modulation of neuronal transient receptor potential (TRP) and Ca(2+) -dependent K(+) channels by PRL. In this review, we summarize current knowledge and recent progress in understanding the regulation of neuronal excitability and channels by PRL.
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An X, Hou J, Gao T, Lei Y, Li G, Song Y, Wang J, Cao B. Single-nucleotide polymorphisms g.151435C>T and g.173057T>C in PRLR gene regulated by bta-miR-302a are associated with litter size in goats. Theriogenology 2015; 83:1477-1483.e1. [DOI: 10.1016/j.theriogenology.2015.01.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 01/19/2015] [Accepted: 01/24/2015] [Indexed: 01/22/2023]
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40
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Hou JX, An XP, Han P, Peng JY, Cao BY. Two missense mutations in exon 9 of caprinePRLRgene were associated with litter size. Anim Genet 2014; 46:87-90. [DOI: 10.1111/age.12223] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2014] [Indexed: 12/15/2022]
Affiliation(s)
- J. X. Hou
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - X. P. An
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - P. Han
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - J. Y. Peng
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - B. Y. Cao
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
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