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Mota-Carrillo E, Juárez-Contreras R, González-Ramírez R, Luis E, Morales-Lázaro SL. The Influence of Sex Steroid Hormone Fluctuations on Capsaicin-Induced Pain and TRPV1 Expression. Int J Mol Sci 2024; 25:8040. [PMID: 39125611 PMCID: PMC11312332 DOI: 10.3390/ijms25158040] [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: 06/29/2024] [Revised: 07/17/2024] [Accepted: 07/19/2024] [Indexed: 08/12/2024] Open
Abstract
Sexual dimorphism among mammals includes variations in the pain threshold. These differences are influenced by hormonal fluctuations in females during the estrous and menstrual cycles of rodents and humans, respectively. These physiological conditions display various phases, including proestrus and diestrus in rodents and follicular and luteal phases in humans, distinctly characterized by varying estrogen levels. In this study, we evaluated the capsaicin responses in male and female mice at different estrous cycle phases, using two murine acute pain models. Our findings indicate that the capsaicin-induced pain threshold was lower in the proestrus phase than in the other three phases in both pain assays. We also found that male mice exhibited a higher pain threshold than females in the proestrus phase, although it was similar to females in the other cycle phases. We also assessed the mRNA and protein levels of TRPV1 in the dorsal root and trigeminal ganglia of mice. Our results showed higher TRPV1 protein levels during proestrus compared to diestrus and male mice. Unexpectedly, we observed that the diestrus phase was associated with higher TRPV1 mRNA levels than those in both proestrus and male mice. These results underscore the hormonal influence on TRPV1 expression regulation and highlight the role of sex steroids in capsaicin-induced pain.
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Affiliation(s)
- Edgardo Mota-Carrillo
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (E.M.-C.); (R.J.-C.)
- Programa de Doctorado en Ciencias Biomédicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Rebeca Juárez-Contreras
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (E.M.-C.); (R.J.-C.)
- Programa de Posgrado en Ciencias Biológicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Ricardo González-Ramírez
- Departamento de Biología Molecular e Histocompatibilidad, Hospital General “Dr. Manuel Gea González”, Ciudad de México 14080, Mexico;
- Centro de Investigación sobre el Envejecimiento, CINVESTAV, Ciudad de México 14390, Mexico
| | - Enoch Luis
- Investigador por México—Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico;
- Laboratorio Nacional de Canalopatías, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Sara Luz Morales-Lázaro
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (E.M.-C.); (R.J.-C.)
- Centro de Investigación sobre el Envejecimiento, CINVESTAV, Ciudad de México 14390, Mexico
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2
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Khan A, Liu S, Tao F. Mechanisms Underlying Sex Differences in Temporomandibular Disorders and Their Comorbidity with Migraine. Brain Sci 2024; 14:707. [PMID: 39061447 PMCID: PMC11274652 DOI: 10.3390/brainsci14070707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/11/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Sexual dimorphism in temporomandibular disorders (TMDs) and their comorbidity with migraine are important phenomena observed in clinics. TMDs are the most prevalent orofacial pain conditions with jaw joint and masseter muscle dysfunction. Migraine is the predominant headache commonly associated with TMDs. Women much more often suffer from this orofacial pain than men. However, currently, there is no gender-specific therapy for such pain conditions. Understanding the pathophysiological mechanisms behind sex differences in TMDs as well as their comorbidity with migraines is essential for developing novel approaches for gender-specific treatment of TMDs and related orofacial pain comorbidity. In this review, we summarize recent research progress regarding sex differences in TMDs, focusing on the underlying mechanisms including craniofacial anatomy, hormonal regulation, and roles of opioids, transient receptor potential channels, and endocannabinoid systems. We also discuss the mechanisms of comorbid TMDs and migraine. The information covered in this review will provide mechanistic insights into sex differences in TMDs and their comorbidity with migraine, which could aid in developing effective treatment strategies for the overlapping orofacial pain condition.
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Affiliation(s)
| | | | - Feng Tao
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX 75246, USA; (A.K.); (S.L.)
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3
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Qu Y, Fu Y, Liu Y, Liu C, Xu B, Zhang Q, Jiang P. The role of TRPV1 in RA pathogenesis: worthy of attention. Front Immunol 2023; 14:1232013. [PMID: 37744324 PMCID: PMC10514908 DOI: 10.3389/fimmu.2023.1232013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
Transient receptor potential cation channel subfamily V member 1 (TRPV1) is a Ca2+permeable, non-selective cation channel that is found primarily in sensory nerve fibres. Previous studies focused on pain transmission. However, recent studies have found that the TRPV1 channel, in addition to being associated with pain, also plays a role in immune regulation and their dysregulation frequently affects the development of rheumatoid arthritis (RA). A thorough understanding of the mechanism will facilitate the design of new TRPV1-targeted drugs and improve the clinical efficacy of RA. Here, we provide an updated and comprehensive overview of how the TRPV1 channel intrinsically regulates neuronal and immune cells, and how alterations in the TRPV1 channel in synoviocytes or chondrocytes extrinsically affect angiogenesis and bone destruction. Rapid progress has been made in research targeting TRPV1 for the treatment of inflammatory arthritis, but there is still much-uncharted territory regarding the therapeutic role of RA. We present a strategy for targeting the TRPV1 channel in RA therapy, summarising the difficulties and promising advances in current research, with the aim of better understanding the role of the TRPV1 channel in RA pathology, which could accelerate the development of TRPV1-targeted modulators for the design and development of more effective RA therapies.
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Affiliation(s)
- Yuan Qu
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yang Fu
- Institute of Chinese Orthopedics and Traumatology, Shandong Wendeng Osteopathic Hospital, Weihai, China
| | - Yuan Liu
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chuanguo Liu
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Bing Xu
- Department of Rheumatology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qian Zhang
- Science and Technology Department, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ping Jiang
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
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4
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Bonomini F, Favero G, Castrezzati S, Borsani E. Role of Neurotrophins in Orofacial Pain Modulation: A Review of the Latest Discoveries. Int J Mol Sci 2023; 24:12438. [PMID: 37569811 PMCID: PMC10419393 DOI: 10.3390/ijms241512438] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
Orofacial pain represents a multidisciplinary biomedical challenge involving basic and clinical research for which no satisfactory solution has been found. In this regard, trigeminal pain is described as one of the worst pains perceived, leaving the patient with no hope for the future. The aim of this review is to evaluate the latest discoveries on the involvement of neurotrophins in orofacial nociception, describing their role and expression in peripheral tissues, trigeminal ganglion, and trigeminal nucleus considering their double nature as "supporters" of the nervous system and as "promoters" of nociceptive transmission. In order to scan recent literature (last ten years), three independent researchers referred to databases PubMed, Embase, Google Scholar, Scopus, and Web of Science to find original research articles and clinical trials. The researchers selected 33 papers: 29 original research articles and 4 clinical trials. The results obtained by the screening of the selected articles show an interesting trend, in which the precise modulation of neurotrophin signaling could switch neurotrophins from being a "promoter" of pain to their beneficial neurotrophic role of supporting the nerves in their recovery, especially when a structural alteration is present, as in neuropathic pain. In conclusion, neurotrophins could be interesting targets for orofacial pain modulation but more studies are necessary to clarify their role for future application in clinical practice.
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Affiliation(s)
- Francesca Bonomini
- Division of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (F.B.); (G.F.); (S.C.)
- Interdepartmental University Center of Research “Adaptation and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy
- Italian Society of Orofacial Pain (Società Italiana Studio Dolore Orofacciale—SISDO), 25123 Brescia, Italy
| | - Gaia Favero
- Division of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (F.B.); (G.F.); (S.C.)
- Interdepartmental University Center of Research “Adaptation and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy
| | - Stefania Castrezzati
- Division of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (F.B.); (G.F.); (S.C.)
| | - Elisa Borsani
- Division of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (F.B.); (G.F.); (S.C.)
- Interdepartmental University Center of Research “Adaptation and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy
- Italian Society of Orofacial Pain (Società Italiana Studio Dolore Orofacciale—SISDO), 25123 Brescia, Italy
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Hornung RS, Raut NGR, Cantu DJ, Lockhart LM, Averitt DL. Sigma-1 receptors and progesterone metabolizing enzymes in nociceptive sensory neurons of the female rat trigeminal ganglia: A neural substrate for the antinociceptive actions of progesterone. Mol Pain 2022; 18:17448069211069255. [PMID: 35040378 PMCID: PMC8777333 DOI: 10.1177/17448069211069255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Orofacial pain disorders are predominately experienced by women. Progesterone, a major ovarian hormone, is neuroprotective and antinociceptive. We recently reported that progesterone attenuates estrogen-exacerbated orofacial pain behaviors, yet it remains unclear what anatomical substrate underlies progesterone's activity in the trigeminal system. Progesterone has been reported to exert protective effects through actions at intracellular progesterone receptors (iPR), membrane-progesterone receptors (mPR), or sigma 1 receptors (Sig-1R). Of these, the iPR and Sig-1R have been reported to have a role in pain. Progesterone can also have antinociceptive effects through its metabolite, allopregnanolone. Two enzymes, 5α-reductase and 3α-hydroxysteroid dehydrogenase (3α-HSD), are required for the metabolism of progesterone to allopregnanolone. Both progesterone and allopregnanolone rapidly attenuate pain sensitivity, implicating action of either progesterone at Sig-1R and/or conversion to allopregnanolone which targets GABAA receptors. In the present study, we investigated whether Sig-1 Rs are expressed in nociceptors within the trigeminal ganglia of cycling female rats and whether the two enzymes required for progesterone metabolism to allopregnanolone, 5α-reductase and 3α-hydroxysteroid dehydrogenase, are also present. Adult female rats from each stage of the estrous cycle were rapidly decapitated and the trigeminal ganglia collected. Trigeminal ganglia were processed by either fluorescent immunochemistry or western blotting to for visualization and quantification of Sig-1R, 5α-reductase, and 3α-hydroxysteroid dehydrogenase. Here we report that Sig-1Rs and both enzymes involved in progesterone metabolism are highly expressed in a variety of nociceptive sensory neuron populations in the female rat trigeminal ganglia at similar levels across the four stages of the estrous cycle. These data indicate that trigeminal sensory neurons are an anatomical substrate for the reported antinociceptive activity of progesterone via Sig-1R and/or conversion to allopregnanolone.
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Affiliation(s)
| | | | - Daisy J Cantu
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
| | - Lauren M Lockhart
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
| | - Dayna L Averitt
- Division of Biology, School of the Sciences, Texas Woman’s
University, Denton, TX, USA
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6
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Uchida Y, Izumizaki M. Effect of menstrual cycle and female hormones on TRP and TREK channels in modifying thermosensitivity and physiological functions in women. J Therm Biol 2021; 100:103029. [PMID: 34503776 DOI: 10.1016/j.jtherbio.2021.103029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/15/2022]
Abstract
Thermoregulation is crucial for human survival at various ambient temperatures. Transient receptor potential (TRP) and TWIK-related K+ (TREK) channels expressed in sensory neurons play a role in peripheral thermosensitivity for temperature detection. In addition, these channels have various physiological roles in the skeletal, nervous, immune, vascular, digestive, and urinary systems. In women, the female hormones estradiol (E2) and progesterone (P4), which fluctuate during the menstrual cycle, affect various physiological functions, such as thermoregulation in hot and cold environments. The present review describes the effect of female hormones on TRP and TREK channels and related physiological functions. The P4 decreased thermosensitivity via TRPV1. E2 facilitates temporomandibular joint disease (TRPV1), breast cancer (TRPM8), and calcium absorption in the digestive system (TRPV5 and TRPV6), inhibits the facilitation of vasoconstriction (TRPM3), nerve inflammation (TRPM4), sweetness sensitivity (TRPM5), and menstrual disorders (TRPC1), and prevents insulin resistance (TRPC5) via each channel. P4 inhibits vasoconstriction (TRPM3), sweetness sensitivity (TRPM5), ciliary motility in the lungs (TRPV4), menstrual disorder (TRPC1), and immunity (TRPC3), and facilitates breast cancer (TRPV6) via each channel as indicated. The effects of female hormones on TREK channels and physiological functions are still under investigation. In summary, female hormones influence physiological functions via some TRP channels; however, the literature is not comprehensive and future studies are needed, especially those related to thermoregulation in women.
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Affiliation(s)
- Yuki Uchida
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan.
| | - Masahiko Izumizaki
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan
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Ahmed F, Rahman M, Thompson R, Bereiter DA. Role of Connexin 43 in an Inflammatory Model for TMJ Hyperalgesia. FRONTIERS IN PAIN RESEARCH 2021; 2:715871. [PMID: 35295418 PMCID: PMC8915650 DOI: 10.3389/fpain.2021.715871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/08/2021] [Indexed: 12/27/2022] Open
Abstract
Temporomandibular joint disorders (TMD) consist of a heterogeneous group of conditions that present with pain in the temporomandibular joint (TMJ) region and muscles of mastication. This project assessed the role of connexin 43 (Cx43), a gap junction protein, in the trigeminal ganglion (TG) in an animal model for persistent inflammatory TMJ hyperalgesia. Experiments were performed in male and female rats to determine if sex differences influence the expression and/or function of Cx43 in persistent TMJ hyperalgesia. Intra-TMJ injection of Complete Freund's Adjuvant (CFA) caused a significant increase in Cx43 expression in the TG at 4 days and 10 days post-injection in ovariectomized (OvX) female rats and OvX females treated with estradiol (OvXE), while TG samples in males revealed only marginal increases. Intra-TG injection of interference RNA for Cx43 (siRNA Cx43) 3 days prior to recording, markedly reduced TMJ-evoked masseter muscle electromyographic (MMemg) activity in all CFA-inflamed rats, while activity in sham animals was not affected. Western blot analysis revealed that at 3 days after intra-TG injection of siRNA Cx43 protein levels for Cx43 were significantly reduced in TG samples of all CFA-inflamed rats. Intra-TG injection of the mimetic peptide GAP19, which inhibits Cx43 hemichannel formation, greatly reduced TMJ-evoked MMemg activity in all CFA-inflamed groups, while activity in sham groups was not affected. These results revealed that TMJ inflammation caused a persistent increase in Cx43 protein in the TG in a sex-dependent manner. However, intra-TG blockade of Cx43 by siRNA or by GAP19 significantly reduced TMJ-evoked MMemg activity in both males and females following TMJ inflammation. These results indicated that Cx43 was necessary for enhanced jaw muscle activity after TMJ inflammation in males and females, a result that could not be predicted on the basis of TG expression of Cx43 alone.
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8
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Kaur S, McDonald H, Tongkhuya S, Lopez CM, Ananth S, Hickman TM, Averitt DL. Estrogen exacerbates the nociceptive effects of peripheral serotonin on rat trigeminal sensory neurons. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2021; 10:100073. [PMID: 34504982 PMCID: PMC8414175 DOI: 10.1016/j.ynpai.2021.100073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 11/21/2022]
Abstract
Orofacial pain disorders involving trigeminal sensory neurons disproportionately affect women and can be modulated by hormones, especially estrogen (E2). Proinflammatory mediators, like serotonin (5HT), can act on sensory neurons expressing the transient receptor potential vanilloid 1 (TRPV1) ion channel, resulting in peripheral sensitization. We previously reported peripheral 5HT evokes greater pain behaviors in the hindpaw of female rats during proestrus and estrus, stages when E2 fluctuates. It is unknown if this interaction is comparable in the trigeminal system. We hypothesized that E2 exacerbates 5HT-evoked nocifensive pain behaviors and pain signaling in female trigeminal sensory neurons. We report 5HT-evoked nocifensive behaviors are significantly higher during estrus and proestrus, which is attenuated by blocking the 5HT2A receptor. The comparable dose of 5HT was not nociceptive in males unless capsaicin was also administered. When administered with capsaicin, a lower dose of 5HT evoked trigeminal pain behaviors in females during proestrus. Further, basal 5HT content in the vibrissal pad was higher in cycling females compared to males. Ex vivo, E2 enhanced 5HT-potentiated CGRP release from trigeminal neurons, which was not significantly reduced by blocking the 5HT2A receptor. Our data indicates that estrogen fluctuation influences the pronociceptive effects of 5HT on trigeminal sensory neurons.
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Affiliation(s)
- Sukhbir Kaur
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Hanna McDonald
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Sirima Tongkhuya
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Cierra M.C. Lopez
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Sushmitha Ananth
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Taylor M. Hickman
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
| | - Dayna L. Averitt
- Department of Biology, Texas Woman’s University, Denton, TX 76204, United States
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17β-Estradiol Exacerbated Experimental Occlusal Interference-Induced Chronic Masseter Hyperalgesia by Increasing the Neuronal Excitability and TRPV1 Function of Trigeminal Ganglion in Ovariectomized Rats. Int J Mol Sci 2021; 22:ijms22136945. [PMID: 34203300 PMCID: PMC8269106 DOI: 10.3390/ijms22136945] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/14/2021] [Accepted: 06/20/2021] [Indexed: 12/17/2022] Open
Abstract
Pain symptoms in temporomandibular disorders (TMD) predominantly affect reproductive women, suggesting that estrogen regulates pain perception. However, how estrogen contributes to chronic TMD pain remains largely unclear. In the present study, we performed behavioral tests, electrophysiology, Western blot and immunofluorescence to investigate the role and underlying mechanisms of estrogen in dental experimental occlusal interference (EOI)-induced chronic masseter mechanical hyperalgesia in rats. We found that long-term 17β-estradiol (E2) replacement exacerbated EOI-induced masseter hyperalgesia in a dose-dependent manner in ovariectomized (OVX) rats. Whole-cell patch-clamp recordings demonstrated that E2 (100 nM) treatment enhanced the excitability of isolated trigeminal ganglion (TG) neurons in OVX and OVX EOI rats, and EOI increased the functional expression of transient receptor potential vanilloid-1 (TRPV1). In addition, E2 replacement upregulated the protein expression of TRPV1 in EOI-treated OVX rats. Importantly, intraganglionic administration of the TRPV1 antagonist AMG-9810 strongly attenuated the facilitatory effect of E2 on EOI-induced masseter mechanical sensitivity. These results demonstrate that E2 exacerbated EOI-induced chronic masseter mechanical hyperalgesia by increasing TG neuronal excitability and TRPV1 function. Our study helps to elucidate the E2 actions in chronic myogenic TMD pain and may provide new therapeutic targets for relieving estrogen-sensitive pain.
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Liu Y, Zhang XY, Fan YY, Xu XX, Xie QF. Genistein reverses the effect of 17β-estradiol on exacerbating experimental occlusal interference-induced chronic masseter hyperalgesia in ovariectomised rats. J Oral Rehabil 2021; 49:237-248. [PMID: 34075611 DOI: 10.1111/joor.13213] [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] [Received: 03/23/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Oro-facial pain is more prevalent in women than in men, and oestrogen may underlie this sex difference. Genistein reversed the potentiation of 17β-estradiol (E2) on glutamate-induced acute masseter nociceptive behaviour, but its role in dental experimental occlusal interference (EOI)-induced chronic masseter hyperalgesia remains unclear. OBJECTIVE This study aimed to investigate sex differences, and to explore the role and underlying mechanisms of genistein in E2-potentiated EOI-induced chronic masseter hyperalgesia in rats. METHODS Female and male rats were prepared to compare the sex differences of masseter hyperalgesia induced by EOI using a 0.4-mm-thick metal crown. Female rats were ovariectomised (OVX) and treated with E2 and genistein, followed by EOI. The head withdrawal threshold (HWT) was examined to assess masseter sensitivity. The protein expression of transient receptor potential vanilloid-1 (TRPV1) in the trigeminal ganglion (TG) was detected using western blotting. Immunofluorescence staining was used to reveal the colocalisation of oestrogen receptors (ERs) with TRPV1 and the percentage of TRPV1-positive neurons in the TG. RESULTS To some extent, female rats displayed enhanced sensitivity to EOI-induced chronic masseter hyperalgesia compared with males. Female rats showed the lowest HWT in the pro-oestrus phase. Pre-treatment with genistein antagonised E2 potentiation in EOI-induced masseter hyperalgesia and blocked the effect of E2 by downregulating TRPV1 protein expression and the percentage of TRPV1-positive neurons in the TG. CONCLUSION Female rats showed greater masseter hyperalgesia than males under EOI. Genistein antagonised the facilitation of EOI-induced chronic masseter hyperalgesia by E2 probably through inhibiting TRPV1 in the TG.
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Affiliation(s)
- Yun Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,Center for Oral Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiao-Yu Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Ying-Ying Fan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,Center for Oral Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiao-Xiang Xu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,Center for Oral Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qiu-Fei Xie
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,Center for Oral Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology, Beijing, China
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11
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Teixeira JM, Pimentel RM, Abdalla HB, Sousa HMX, Macedo CG, Napimoga MH, Tambeli CH, Oliveira‐Fusaro MCG, Clemente‐Napimoga JT. P2X7‐induced nociception in the temporomandibular joint of rats depends on inflammatory mechanisms and C‐fibres sensitization. Eur J Pain 2021; 25:1107-1118. [DOI: 10.1002/ejp.1732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Juliana M. Teixeira
- Faculdade São Leopoldo Mandic Área de Fisiologia Instituto de Pesquisas São Leopoldo Mandic Campinas Brazil
| | - Rafael M. Pimentel
- Faculdade São Leopoldo Mandic Área de Fisiologia Instituto de Pesquisas São Leopoldo Mandic Campinas Brazil
| | - Henrique B. Abdalla
- Faculdade São Leopoldo Mandic Área de Fisiologia Instituto de Pesquisas São Leopoldo Mandic Campinas Brazil
| | - Hortência M. X. Sousa
- Laboratory of Orofacial Pain Department of Physiology Piracicaba Dental School State University of Campinas (UNICAMP) Piracicaba Brazil
| | - Cristina G. Macedo
- Faculdade São Leopoldo Mandic Área de Fisiologia Instituto de Pesquisas São Leopoldo Mandic Campinas Brazil
| | - Marcelo H. Napimoga
- Faculdade São Leopoldo Mandic Área de Imunologia Instituto de Pesquisas São Leopoldo Mandic Campinas Brazil
| | - Cláudia H. Tambeli
- Department of Structural and Functional Biology Institute of Biology State University of Campinas (UNICAMP) Campinas Brazil
| | - Maria C. G. Oliveira‐Fusaro
- Laboratory of Studies of Pain and Inflammation School of Applied Sciences State University of Campinas (UNICAMP) Limeira São Paulo Brazil
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12
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Transient Receptor Potential (TRP) Ion Channels in Orofacial Pain. Mol Neurobiol 2021; 58:2836-2850. [PMID: 33515176 DOI: 10.1007/s12035-021-02284-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023]
Abstract
Orofacial pain, including temporomandibular joint disorders pain, trigeminal neuralgia, dental pain, and debilitating headaches, affects millions of Americans each year with significant population health impact. Despite the existence of a large body of information on the subject, the molecular underpinnings of orofacial pain remain elusive. Two decades of research has identified that transient receptor potential (TRP) ion channels play a crucial role in pathological pain. A number of TRP ion channels are clearly expressed in the trigeminal sensory system and have critical functions in the transduction and pathogenesis of orofacial pain. Although there are many similarities, the orofacial sensory system shows some distinct peripheral and central pain processing and different sensitivities from the spinal sensory system. Relative to the extensive review on TRPs in spinally-mediated pain, the summary of TRPs in trigeminally-mediated pain has not been well-documented. This review focuses on the current experimental evidence involving TRP ion channels, particularly TRPV1, TRPA1, TRPV4, and TRPM8 in orofacial pain, and discusses their possible cellular and molecular mechanisms.
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Linher-Melville K, Shah A, Singh G. Sex differences in neuro(auto)immunity and chronic sciatic nerve pain. Biol Sex Differ 2020; 11:62. [PMID: 33183347 PMCID: PMC7661171 DOI: 10.1186/s13293-020-00339-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/20/2020] [Indexed: 01/13/2023] Open
Abstract
Chronic pain occurs with greater frequency in women, with a parallel sexually dimorphic trend reported in sufferers of many autoimmune diseases. There is a need to continue examining neuro-immune-endocrine crosstalk in the context of sexual dimorphisms in chronic pain. Several phenomena in particular need to be further explored. In patients, autoantibodies to neural antigens have been associated with sensory pathway hyper-excitability, and the role of self-antigens released by damaged nerves remains to be defined. In addition, specific immune cells release pro-nociceptive cytokines that directly influence neural firing, while T lymphocytes activated by specific antigens secrete factors that either support nerve repair or exacerbate the damage. Modulating specific immune cell populations could therefore be a means to promote nerve recovery, with sex-specific outcomes. Understanding biological sex differences that maintain, or fail to maintain, neuroimmune homeostasis may inform the selection of sex-specific treatment regimens, improving chronic pain management by rebalancing neuroimmune feedback. Given the significance of interactions between nerves and immune cells in the generation and maintenance of neuropathic pain, this review focuses on sex differences and possible links with persistent autoimmune activity using sciatica as an example.
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Affiliation(s)
- Katja Linher-Melville
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
- Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, Ontario, Canada
| | - Anita Shah
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Gurmit Singh
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada.
- Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, Ontario, Canada.
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Tariba Knežević P, Vukman R, Uhač M, Illeš D, Kovačević Pavičić D, Simonić-Kocijan S. P 2Y 2 Receptors Mediate Masseter Muscle Mechanical Hypersensitivity in Rats. J Pain Res 2020; 13:1323-1333. [PMID: 32581574 PMCID: PMC7280063 DOI: 10.2147/jpr.s239831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 05/07/2020] [Indexed: 01/18/2023] Open
Abstract
Purpose P2Y2 receptors (P2Y2Rs) are among the various receptors that play an important role in nociception. The goal of this research was to investigate possible P2Y2R expression changes in the trigeminal ganglion (TRG) in bilateral masseter muscle (MM) hypersensitivity following unilateral MM inflammation. The impact of unilateral intramasseteric administration of P2Y2R antagonist on bilateral MM hypersensitivity was also explored. Materials and Methods Bilateral MM hypersensitivity was provoked by unilateral intramasseteric injection of complete Freund’s adjuvant (CFA). The head withdrawal threshold (HWT) was assessed bilaterally 4 days later. Bilateral TRG and MM isolation were followed, and quantitative real-time polymerase chain reaction (qRT-PCR) and histopathological analysis were carried out on these tissues, respectively. The involvement of P2Y2Rs in nocifensive behavior was evaluated by administering two doses of P2Y2R antagonist AR-C118925 (0.2 or 1 mg/100 μL) in inflamed MM 4 days post-CFA administration. Bilateral HWT was assessed at different time points following antagonist injection. Results qRT-PCR analysis demonstrated P2Y2R up-regulation in TRG ipsilateral to the site of CFA administration. Compared to the controls, both doses of AR-C118925 injected ipsilateral to the TRG increased the bilateral HWT at 30, 60, 90, and 120 minutes after antagonist administration. Conclusion The findings suggest that P2Y2Rs may affect MM inflammatory hypersensitivity owing to its up-regulation in the TRG in MM inflammatory pain states.
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Affiliation(s)
- Petra Tariba Knežević
- Department of Prosthodontics, Faculty of Dental Medicine, University of Rijeka, Rijeka, Croatia.,Department of Prosthodontics, Clinic of Dental Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | - Robert Vukman
- Department of Prosthodontics, Faculty of Dental Medicine, University of Rijeka, Rijeka, Croatia.,Department of Prosthodontics, Clinic of Dental Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | - Mia Uhač
- Department of Orthodontics, Clinic of Dental Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | - Davor Illeš
- Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Daniela Kovačević Pavičić
- Department of Prosthodontics, Faculty of Dental Medicine, University of Rijeka, Rijeka, Croatia.,Department of Prosthodontics, Clinic of Dental Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | - Sunčana Simonić-Kocijan
- Department of Prosthodontics, Faculty of Dental Medicine, University of Rijeka, Rijeka, Croatia.,Department of Prosthodontics, Clinic of Dental Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
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Steroids and TRP Channels: A Close Relationship. Int J Mol Sci 2020; 21:ijms21113819. [PMID: 32471309 PMCID: PMC7325571 DOI: 10.3390/ijms21113819] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 02/07/2023] Open
Abstract
Transient receptor potential (TRP) channels are remarkable transmembrane protein complexes that are essential for the physiology of the tissues in which they are expressed. They function as non-selective cation channels allowing for the signal transduction of several chemical, physical and thermal stimuli and modifying cell function. These channels play pivotal roles in the nervous and reproductive systems, kidney, pancreas, lung, bone, intestine, among others. TRP channels are finely modulated by different mechanisms: regulation of their function and/or by control of their expression or cellular/subcellular localization. These mechanisms are subject to being affected by several endogenously-produced compounds, some of which are of a lipidic nature such as steroids. Fascinatingly, steroids and TRP channels closely interplay to modulate several physiological events. Certain TRP channels are affected by the typical genomic long-term effects of steroids but others are also targets for non-genomic actions of some steroids that act as direct ligands of these receptors, as will be reviewed here.
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Hornung RS, Benton WL, Tongkhuya S, Uphouse L, Kramer PR, Averitt DL. Progesterone and Allopregnanolone Rapidly Attenuate Estrogen-Associated Mechanical Allodynia in Rats with Persistent Temporomandibular Joint Inflammation. Front Integr Neurosci 2020; 14:26. [PMID: 32457584 PMCID: PMC7225267 DOI: 10.3389/fnint.2020.00026] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/15/2020] [Indexed: 12/16/2022] Open
Abstract
Temporomandibular joint disorder (TMD) is associated with pain in the joint (temporomandibular joint, TMJ) and muscles involved in mastication. TMD pain dissipates following menopause but returns in some women undergoing estrogen replacement therapy. Progesterone has both anti-inflammatory and antinociceptive properties, while estrogen's effects on nociception are variable and highly dependent on both natural hormone fluctuations and estrogen dosage during pharmacological treatments, with high doses increasing pain. Allopregnanolone, a progesterone metabolite and positive allosteric modulator of the GABAA receptor, also has antinociceptive properties. While progesterone and allopregnanolone are antinociceptive, their effect on estrogen-exacerbated TMD pain has not been determined. We hypothesized that removing the source of endogenous ovarian hormones would reduce inflammatory allodynia in the TMJ of rats and both progesterone and allopregnanolone would attenuate the estrogen-provoked return of allodynia. Baseline mechanical sensitivity was measured in female Sprague-Dawley rats (150-175 g) using the von Frey filament method followed by a unilateral injection of complete Freund's adjuvant (CFA) into the TMJ. Mechanical allodynia was confirmed 24 h later; then rats were ovariectomized or received sham surgery. Two weeks later, allodynia was reassessed and rats received one of the following subcutaneous hormone treatments over 5 days: a daily pharmacological dose of estradiol benzoate (E2; 50 μg/kg), daily E2 and pharmacological to sub-physiological doses of progesterone (P4; 16 mg/kg, 16 μg/kg, or 16 ng/kg), E2 daily and interrupted P4 given every other day, daily P4, or daily vehicle control. A separate group of animals received allopregnanolone (0.16 mg/kg) instead of P4. Allodynia was reassessed 1 h following injections. Here, we report that CFA-evoked mechanical allodynia was attenuated following ovariectomy and daily high E2 treatment triggered the return of allodynia, which was rapidly attenuated when P4 was also administered either daily or every other day. Allopregnanolone treatment, whether daily or every other day, also attenuated estrogen-exacerbated allodynia within 1 h of treatment, but only on the first treatment day. These data indicate that when gonadal hormone levels have diminished, treatment with a lower dose of progesterone may be effective at rapidly reducing the estrogen-evoked recurrence of inflammatory mechanical allodynia in the TMJ.
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Affiliation(s)
- Rebecca S. Hornung
- Department of Biology, Texas Woman’s University, Denton, TX, United States
| | - William L. Benton
- Department of Biology, Texas Woman’s University, Denton, TX, United States
| | - Sirima Tongkhuya
- Department of Biology, Texas Woman’s University, Denton, TX, United States
| | - Lynda Uphouse
- Department of Biology, Texas Woman’s University, Denton, TX, United States
| | - Phillip R. Kramer
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, United States
| | - Dayna Loyd Averitt
- Department of Biology, Texas Woman’s University, Denton, TX, United States
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Galindo T, Reyna J, Weyer A. Evidence for Transient Receptor Potential (TRP) Channel Contribution to Arthritis Pain and Pathogenesis. Pharmaceuticals (Basel) 2018; 11:E105. [PMID: 30326593 PMCID: PMC6315622 DOI: 10.3390/ph11040105] [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: 09/01/2018] [Revised: 10/08/2018] [Accepted: 10/12/2018] [Indexed: 02/07/2023] Open
Abstract
Based on clinical and preclinical evidence, Transient Receptor Potential (TRP) channels have emerged as potential drug targets for the treatment of osteoarthritis, rheumatoid arthritis, and gout. This review summarizes the relevant data supporting a role for various TRP channels in arthritis pain and pathogenesis, as well as the current state of pharmacological efforts to ameliorate arthritis symptoms in patient populations.
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Affiliation(s)
- Tabitha Galindo
- School of Physical Therapy and Athletic Training, Pacific University, Hillsboro, OR 97116, USA.
| | - Jose Reyna
- School of Physical Therapy and Athletic Training, Pacific University, Hillsboro, OR 97116, USA.
| | - Andy Weyer
- Biological Sciences Department, City College of San Francisco, San Francisco, CA 94112, USA.
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18
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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: 33] [Impact Index Per Article: 5.5] [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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Sex-dependent difference in the association between frequency of spicy food consumption and risk of hypertension in Chinese adults. Eur J Nutr 2018; 58:2449-2461. [PMID: 30078091 DOI: 10.1007/s00394-018-1797-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 07/26/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE The aim of our study was to explore the association between frequency of spicy food consumption and risk of hypertension in Chinese adults. METHODS Data were extracted from the 2009 wave of the China Health and Nutrition Survey, consisting of 9273 apparently healthy adults. Height, weight, and blood pressure (BP) were measured and diet was assessed with three consecutive 24-h recalls in combination with a weighed food inventory. Frequency of spicy food consumption and degree of pungency in spicy food consumption were self-reported. Hypertension was defined as systolic BP (SBP) ≥ 140 mmHg and/or diastolic BP (DBP) ≥ 90 mmHg, or having known hypertension. Multilevel mixed-effects models were constructed to estimate changes in SBP and DBP levels as well as risk of hypertension. RESULTS Higher frequency of spicy food consumption was significantly associated with lower SBP and DBP levels and lower risk of hypertension in female participants after adjustment for potential confounders (all P trend < 0.05) and cluster effects at different levels (individual, community, and province). Compared with female participants who did not eat spicy food, the adjusted odds ratios of hypertension were 0.740 (95% CI 0.569, 0.963; P = 0.025) in female participants who consumed usually, and 0.760 (95% CI 0.624, 0.925; P = 0.006) in female participants who ate spicy food with moderate pungency. There was no significant association of spicy food consumption with hypertension in male participants. CONCLUSIONS Frequency of spicy food consumption was inversely associated with risk of hypertension in female, but not male adults.
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20
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Acevedo-Alvarez M, Yeh J, Alvarez-Lugo L, Lu M, Sukumar N, Hill WG, Chai TC. Mouse urothelial genes associated with voiding behavior changes after ovariectomy and bladder lipopolysaccharide exposure. Neurourol Urodyn 2018; 37:2398-2405. [PMID: 29682797 DOI: 10.1002/nau.23592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 03/23/2018] [Indexed: 12/15/2022]
Abstract
AIMS Symptoms from overactive bladder (OAB) and cystitis secondary to urinary tract infection (UTI) can be similar in post-menopausal women. Effects of ovariectomy (OVX) on voiding behavior after lipopolysaccharide (LPS) intravesical exposure (surrogate for cystitis) in mice were measured. Urothelial genes associated with micturition changes were identified. METHODS Female C57BL6/J mice underwent OVX or sham surgeries (n = 10 for each). Voiding spot assays (VSA) were performed prior to surgery, 4 weeks post-surgery, and each time after 3 consecutive days of transurethral instillation of LPS. In another experiment, mice underwent either sham (n = 9) or OVX (n = 9) surgeries. Urothelial RNAs were collected 4 weeks post-surgery, day 1 and day 3 after LPS instillation. Mouse Gene 2.0 ST Arrays (entire 34 K transcripts) were used for microarray hybridization. A set of criteria was utilized to identify gene expression changes that mimicked voiding behavior changes. RESULTS Three days after LPS exposure, OVX mice persisted with overactive whereas sham mice normalized voiding behavior. Nine urothelial paralleling voiding behavior changes were identified: IL6 (interleukin 6), IL6rα (Interleukin 6 receptor α), Ptgs2 (Prostaglandin-endoperoxide synthase 2 or COX-2), Ereg (epiregulin), Dusp6 (dual specificity phosphatase 6), Zfp948 (zinc finger protein 948), Zfp52 (Zinc finger protein 52), Gch1 (GTP cyclohydrolase 1), and Amd (S-adenosylmethionine decarboxylase). Three other genes, coding unknown proteins, were also identified: GM12840, GM23134, and GM26809. CONCLUSIONS OVX mice persisted with increased voiding frequency after LPS. Urothelial genes that could mediate this voiding behavior include IL6, COX-2, and S-adenosylmethionine decarboxylase.
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Affiliation(s)
- Marian Acevedo-Alvarez
- Departments of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut
| | - Judy Yeh
- Departments of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut
| | - Lery Alvarez-Lugo
- Department of Urology, Yale School of Medicine, New Haven, Connecticut
| | - Ming Lu
- Department of Urology, Yale School of Medicine, New Haven, Connecticut
| | - Nitin Sukumar
- Yale Center for Analytical Sciences, Yale School of Public Health, New Haven, Connecticut
| | - Warren G Hill
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Toby C Chai
- Departments of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut.,Department of Urology, Yale School of Medicine, New Haven, Connecticut
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Passavanti MB, Pota V, Sansone P, Aurilio C, De Nardis L, Pace MC. Chronic Pelvic Pain: Assessment, Evaluation, and Objectivation. PAIN RESEARCH AND TREATMENT 2017; 2017:9472925. [PMID: 29359045 PMCID: PMC5735788 DOI: 10.1155/2017/9472925] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/06/2017] [Accepted: 10/15/2017] [Indexed: 12/20/2022]
Abstract
Chronic Pelvic Pain (CPP) and Chronic Pelvic Pain Syndrome (CPPS) have a significant impact on men and women of reproductive and nonreproductive age, with a considerable burden on overall quality of life (QoL) and on psychological, functional, and behavioural status. Moreover, diagnostic and therapeutic difficulties are remarkable features in many patients. Therefore evaluation, assessment and objectivation tools are often necessary to properly address each patient and consequently his/her clinical needs. Here we review the different tools for pain assessment, evaluation, and objectivation; specific features regarding CPP/CPPS will be highlighted. Also, recent findings disclosed with neuroimaging investigations will be reviewed as they provide new insights into CPP/CPPS pathophysiology and may serve as a tool for CPP assessment and objectivation.
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Affiliation(s)
- Maria Beatrice Passavanti
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
| | - Vincenzo Pota
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
| | - Pasquale Sansone
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
| | - Caterina Aurilio
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
| | - Lorenzo De Nardis
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
| | - Maria Caterina Pace
- Department of Woman, Child, General and Specialized Surgery, University of Campania L. Vanvitelli, Naples, Italy
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Payrits M, Sághy É, Cseko K, Pohóczky K, Bölcskei K, Ernszt D, Barabás K, Szolcsányi J, Ábrahám IM, Helyes Z, Szoke É. Estradiol Sensitizes the Transient Receptor Potential Vanilloid 1 Receptor in Pain Responses. Endocrinology 2017; 158:3249-3258. [PMID: 28977586 DOI: 10.1210/en.2017-00101] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/29/2017] [Indexed: 11/19/2022]
Abstract
Sex differences exist in chronic pain pathologies, and gonadal estradiol (E2) alters the pain sensation. The nocisensor transient receptor potential vanilloid 1 (TRPV1) receptor plays a critical role in triggering pain. Here we examined the impact of E2 on the function of TRPV1 receptor in mice sensory neurons in vitro and in vivo. Both mechano- and thermonociceptive thresholds of the plantar surface of the paw of female mice were significantly lower in proestrus compared with the estrus phase. These thresholds were higher in ovariectomized (OVX) mice and significantly lower in sham-operated mice in proestrus compared with the sham-operated mice in estrus phase. This difference was absent in TRPV1 receptor-deficient mice. Furthermore, E2 potentiated the TRPV1 receptor activation-induced mechanical hyperalgesia in OVX mice. Long pretreatment (14 hours) with E2 induced a significant increase in TRPV1 receptor messenger RNA expression and abolished the capsaicin-induced TRPV1 receptor desensitization in primary sensory neurons. The short E2 incubation (10 minutes) also prevented the desensitization, which reverted after coadministration of E2 and the tropomyosin-related kinase A (TrkA) receptor inhibitor. Our study provides in vivo and in vitro evidence for E2-induced TRPV1 receptor upregulation and sensitization mediated by TrkAR via E2-induced genomic and nongenomic mechanisms. The sensitization and upregulation of TRPV1 receptor by E2 in sensory neurons may explain the greater pain sensitivity in female mice.
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Affiliation(s)
- Maja Payrits
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Éva Sághy
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089, Budapest, Hungary
| | - Kata Cseko
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Krisztina Pohóczky
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Dávid Ernszt
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Department of Pharmaceutical Biotechnology, University of Pécs, Medical School, H-7624 Pécs, Hungary
| | - Klaudia Barabás
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Institute of Physiology, University of Pécs, Medical School, H-7624 Pécs, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - István M Ábrahám
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Institute of Physiology, University of Pécs, Medical School, H-7624 Pécs, Hungary
- MTA-PTE NAP B Molecular Neuroendocrinology Research Group-Hungary, H-7624 Pécs, Hungary
- Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
- MTA-PTE NAP B Chronic Pain Research Group-Hungary, H-7624 Pécs, Hungary
| | - Éva Szoke
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, H-7624 Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- MTA-PTE NAP B Chronic Pain Research Group-Hungary, H-7624 Pécs, Hungary
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Kleine SA, Budsberg SC. Synovial membrane receptors as therapeutic targets: A review of receptor localization, structure, and function. J Orthop Res 2017; 35:1589-1605. [PMID: 28374922 DOI: 10.1002/jor.23568] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/28/2017] [Indexed: 02/04/2023]
Abstract
Joint pathology and degeneration is a significant cause of pain. The synovial membrane plays an important role in maintenance of the joint, contributes to the pathology of many arthropathies and may be adversely affected in joint disease. Improving knowledge of the receptors present within the synovium will aid in a better understanding of joint pathology and the development of new treatments for diseases such as osteoarthritis and rheumatoid arthritis. Knowledge of the location and function of synovial membrane receptors (both in healthy and diseased synovium) may provide important targets in the treatment of various arthropathies. Classic pain receptors such as opioid receptors in the synovium are a mainstay in local and systemic management of chronic pain in many species. In addition to these, many other receptors such as bradykinin, neurokinin, transient receptor potential vanilloid, and inflammatory receptors, such as prostanoid and interleukin receptors have been discovered within the synovial membrane. These receptors are important in pain, inflammation, and in maintenance of normal joint function and may serve as targets for pharmacologic intervention in pathologic states. The goal of this review is to outline synovial membrane receptor localization and local therapeutic modulation of these receptors, in order to stimulate further research into pharmacological management of arthropathies at the local level. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1589-1605, 2017.
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Affiliation(s)
- Stephanie A Kleine
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 2200 College Station Road, Athens 30602, Georgia
| | - Steven C Budsberg
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 2200 College Station Road, Athens 30602, Georgia
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Pace MC, Passavanti MB, De Nardis L, Bosco F, Sansone P, Pota V, Barbarisi M, Palagiano A, Iannotti FA, Panza E, Aurilio C. Nociceptor plasticity: A closer look. J Cell Physiol 2017; 233:2824-2838. [PMID: 28488779 DOI: 10.1002/jcp.25993] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 04/20/2017] [Accepted: 05/09/2017] [Indexed: 12/17/2022]
Abstract
Nociceptors are receptors specifically involved in detecting a tissue damage and transducing it in an electrical signal. Nociceptor activation provoked by any kind of acute lesion is related to the release of several mediators of inflammation, within the framework of a process defined as "peripheral sensitization." This results in an exaggerated response to the painful stimulus, clinically defined as "primary hyperalgesia." The concept of "neuroplasticity" may explain the adaptive mechanisms carried out by the Nervous System in relation to a "harmful" damage; also, neuroplasticity mechanisms are also fundamental for rehabilitative intervention protocols. Here we review several studies that addressed the role of different receptors and ionic channels discovered on nociceptor surface and their role in pain perception. The changes in expression, distribution, and functioning of receptors and ionic channels are thought to be a part of the neuroplasticity property, through which the Nervous System constantly adapts to external stimuli. Moreover, some of the reviewed mediators are also been associated to "central sensitization," a process that results in pain chronicization when the painful stimulation is particularly prolonged or intense, and lastly leads to the memorization of the uncomfortable painful perception.
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Affiliation(s)
- Maria Caterina Pace
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Maria Beatrice Passavanti
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Lorenzo De Nardis
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Fabio Bosco
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Pasquale Sansone
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Vincenzo Pota
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Manlio Barbarisi
- Laboratory of Applied Biotechnology, Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
| | - Antonio Palagiano
- Department of Women, Child and General and Specialized Surgery, Second University of Naples, Naples, Italy
| | - Fabio Arturo Iannotti
- Institute of Biomolecular Chemistry (ICB) Research National Council (CNR), Pozzuoli, Italy
| | - Elisabetta Panza
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Caterina Aurilio
- Department of Anaesthesiological, Surgical and Emergency Sciences, Second University of Naples, Naples, Italy
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Bi RY, Meng Z, Zhang P, Wang XD, Ding Y, Gan YH. Estradiol upregulates voltage-gated sodium channel 1.7 in trigeminal ganglion contributing to hyperalgesia of inflamed TMJ. PLoS One 2017; 12:e0178589. [PMID: 28582470 PMCID: PMC5459440 DOI: 10.1371/journal.pone.0178589] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 05/15/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Temporomandibular disorders (TMDs) have the highest prevalence in women of reproductive age. The role of estrogen in TMDs and especially in TMDs related pain is not fully elucidated. Voltage-gated sodium channel 1.7 (Nav1.7) plays a prominent role in pain perception and Nav1.7 in trigeminal ganglion (TG) is involved in the hyperalgesia of inflamed Temporomandibular joint (TMJ). Whether estrogen could upregulate trigeminal ganglionic Nav1.7 expression to enhance hyperalgesia of inflamed TMJ remains to be explored. METHODS Estrous cycle and plasma levels of 17β-estradiol in female rats were evaluated with vaginal smear and enzyme linked immunosorbent assay, respectively. Female rats were ovariectomized and treated with 17β-estradiol at 0 μg, 20 μg and 80 μg, respectively, for 10 days. TMJ inflammation was induced using complete Freund's adjuvant. Head withdrawal thresholds and food intake were measured to evaluate the TMJ nociceptive responses. The expression of Nav1.7 in TG was examined using real-time PCR and western blot. The activity of Nav1.7 promoter was examined using luciferase reporter assay. The locations of estrogen receptors (ERα and ERβ), the G protein coupled estrogen receptor (GPR30), and Nav1.7 in TG were examined using immunohistofluorescence. RESULTS Upregulation of Nav1.7 in TG and decrease in head withdrawal threshold were observed with the highest plasma 17β-estradiol in the proestrus of female rats. Ovariectomized rats treated with 80 μg 17β-estradiol showed upregulation of Nav1.7 in TG and decrease in head withdrawal threshold as compared with that of the control or ovariectomized rats treated with 0 μg or 20 μg. Moreover, 17β-estradiol dose-dependently potentiated TMJ inflammation-induced upregulation of Nav1.7 in TG and also enhanced TMJ inflammation-induced decrease of head withdrawal threshold in ovariectomized rats. In addition, the estrogen receptor antagonist, ICI 182,780, partially blocked the 17β-estradiol effect on Nav1.7 expression and head withdrawal threshold in ovariectomized rats. ERα and ERβ, but not GPR30, were mostly co-localized with Nav1.7 in neurons in TG. In the nerve growth factor-induced and ERα-transfected PC12 cells, 17β-estradiol dose-dependently enhanced Nav1.7 promoter activity, whereas mutations of the estrogen response element at -1269/-1282 and -1214/-1227 in the promoter completely abolished its effect on the promoter activity. CONCLUSION Estradiol could upregulate trigeminal ganglionic Nav1.7 expression to contribute to hyperalgesia of inflamed TMJ.
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Affiliation(s)
- Rui-Yun Bi
- The Third Dental Center, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
| | - Zhen Meng
- Central laboratory, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
| | - Peng Zhang
- Central laboratory, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
- Center for Temporomandibular Disorders & Orofacial Pain, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
| | - Xue-Dong Wang
- The Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
| | - Yun Ding
- The Third Dental Center, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
- * E-mail: (YD); (YHG)
| | - Ye-Hua Gan
- Central laboratory, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
- Center for Temporomandibular Disorders & Orofacial Pain, Peking University School and Hospital of Stomatology, Haidian District, Beijing, China
- * E-mail: (YD); (YHG)
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26
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Bagüés A, Martín‐Fontelles MI, Esteban‐Hernández J, Sánchez‐Robles EM. Characterization of the nociceptive effect of carrageenan: Masseter versus gastrocnemius. Muscle Nerve 2017; 56:804-813. [DOI: 10.1002/mus.25538] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 12/16/2016] [Accepted: 12/21/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Ana Bagüés
- Área de Farmacología y Nutrición, Unidad asociada I+D+i al Instituto de Química Médica, Grupo de excelencia investigadora URJC–Banco de Santander–Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL)Alcorcón Madrid Spain
| | - M. Isabel Martín‐Fontelles
- Área de Farmacología y Nutrición, Unidad asociada I+D+i al Instituto de Química Médica, Grupo de excelencia investigadora URJC–Banco de Santander–Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL)Alcorcón Madrid Spain
| | - Jesús Esteban‐Hernández
- Área de Medicina Preventiva y Salud Pública, Facultad de Ciencias de la Salud. Universidad Rey Juan CarlosAlcorcón Madrid Spain
| | - Eva M. Sánchez‐Robles
- Área de Farmacología y Nutrición, Unidad asociada I+D+i al Instituto de Química Médica, Grupo de excelencia investigadora URJC–Banco de Santander–Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL)Alcorcón Madrid Spain
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Kun J, Perkecz A, Knie L, Sétáló G, Tornóczki T, Pintér E, Bán Á. TRPA1 receptor is upregulated in human oral lichen planus. Oral Dis 2016; 23:189-198. [PMID: 27718297 DOI: 10.1111/odi.12593] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/14/2016] [Accepted: 10/04/2016] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Oral lichen planus (OLP) is a chronic inflammatory disease of unknown etiology with antigen-specific and non-specific mechanisms. Transient receptor potential ankyrin 1 (TRPA1) is a non-selective cation channel activated by noxious stimuli such as oxidative stress products evoking pain and release of proinflammatory mediators from sensory nerve endings culminating in neurogenic inflammation. Extraneuronal TRPA1s, for example, on immune cells possess yet unknown functions. SUBJECTS AND METHODS We studied the buccal mRNA expression (qPCR) and protein localization (immunohistochemistry) of TRPA1 receptors and key OLP mediator transcripts in oral mucosa samples of healthy volunteers (n = 9), OLP patients (n = 43), and OLP-like hyperkeratotic patients (n = 12). RESULTS We measured 27.7- and 25.5-fold TRPA1 mRNA increase in OLP and OLP-like hyperkeratotic patients compared to healthy controls. TRPA1 transcripts elevated 2.4-fold in hypertensive OLP but not in hyperkeratotic patients compared to counterparts, reduced by 1.6-fold by angiotensin-convertase inhibitor intake. TRPA1 messenger RNA was more coexpressed with transcripts of tumor necrosis factor α than with interferon γ. Keratinocytes, macrophages but not T cells expressed TRPA1. CONCLUSIONS We provided evidence for the extraneuronal presence and upregulation of the proinflammatory TRPA1 receptor in buccal samples of patients with OLP. This may implicate the ion channel in the pathomechanism of OLP.
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Affiliation(s)
- J Kun
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary.,Molecular Pharmacology Group, Szentágothai Research Center, University of Pecs, Pécs, Hungary.,MTA-PTE NAP B Chronic Pain Research Group, University of Pécs, Pécs, Hungary
| | - A Perkecz
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary
| | - L Knie
- Department of Dentistry, Oral and Maxillofacial Surgery, University of Pécs Medical School, Pécs, Hungary
| | - G Sétáló
- Department of Medical Biology, University of Pécs Medical School, Pécs, Hungary
| | - T Tornóczki
- Oral Pathology Unit, Department of Pathology, University of Pécs Medical School, Hungary
| | - E Pintér
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary.,Molecular Pharmacology Group, Szentágothai Research Center, University of Pecs, Pécs, Hungary
| | - Á Bán
- Department of Dentistry, Oral and Maxillofacial Surgery, University of Pécs Medical School, Pécs, Hungary
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28
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Pohóczky K, Kun J, Szalontai B, Szőke É, Sághy É, Payrits M, Kajtár B, Kovács K, Környei JL, Garai J, Garami A, Perkecz A, Czeglédi L, Helyes Z. Estrogen-dependent up-regulation of TRPA1 and TRPV1 receptor proteins in the rat endometrium. J Mol Endocrinol 2016; 56:135-49. [PMID: 26643912 DOI: 10.1530/jme-15-0184] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/04/2015] [Indexed: 01/15/2023]
Abstract
Transient receptor potential ankyrin 1 (TRPA1) and vanilloid 1 (TRPV1) receptors expressed predominantly in sensory nerves are activated by inflammatory stimuli and mediate inflammation and pain. Although they have been shown in the human endometrium, their regulation and function are unknown. Therefore, we investigated their estrogen- and progesterone-dependent alterations in the rat endometrium in comparison with the estrogen-regulated inflammatory cytokine macrophage migration inhibitory factor (MIF). Four-week-old (sexually immature) and four-month-old (sexually mature) female rats were treated with the non-selective estrogen receptor (ER) agonist diethylstilboestrol (DES), progesterone and their combination, or ovariectomized. RT-PCR and immunohistochemistry were performed to determine mRNA and protein expression levels respectively. Channel function was investigated with ratiometric [Ca(2+)]i measurement in cultured primary rat endometrial cells. Both TRP receptors and MIF were detected in the endometrium at mRNA and protein levels, and their localizations were similar. Immunostaining was observed in the immature epithelium, while stromal, glandular and epithelial positivity were observed in adults. Functionally active TRP receptor proteins were shown in endometrial cells by activation-induced calcium influx. In adults, Trpa1 and Trpv1 mRNA levels were significantly up-regulated after DES treatment. TRPA1 increased after every treatment, but TRPV1 remained unchanged following the combined treatment and ovariectomy. In immature rats, DES treatment resulted in increased mRNA expression of both channels and elevated TRPV1 immunopositivity. MIF expression changed in parallel with TRPA1/TRPV1 in most cases. DES up-regulated Trpa1, Trpv1 and Mif mRNA levels in endometrial cell cultures, but 17β-oestradiol having ERα-selective potency increased only the expression of Trpv1. We provide the first evidence for TRPA1/TRPV1 expression and their estrogen-induced up-regulation in the rat endometrium in correlation with the MIF.
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Affiliation(s)
- Krisztina Pohóczky
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - József Kun
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and Ger
| | - Bálint Szalontai
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Éva Szőke
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and Ger
| | - Éva Sághy
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Maja Payrits
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Béla Kajtár
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Krisztina Kovács
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - József László Környei
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - János Garai
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - András Garami
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Anikó Perkecz
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Levente Czeglédi
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and GerontologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryMTA-PTE NAP B Chronic Pain Research GroupHungary, Szigeti Street 12, H-7624 Pécs, HungaryInstitute of Animal ScienceCentre for Agricultural and Applied Economic Sciences, University of Debrecen, PO Box 36, H-4015 Debrecen, Hungary Department of Pharmacology and PharmacotherapyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryJanos Szentagothai Research CentreUniversity of Pécs, Ifjúság Street 20, H-7624 Pécs, HungaryDepartments of PathologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of PhysiologyUniversity of Pécs Medical School, Szigeti Street 12, H-7624 Pécs, HungaryDepartment of Pathophysiology and Ger
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Sun WH, Chen CC. Roles of Proton-Sensing Receptors in the Transition from Acute to Chronic Pain. J Dent Res 2015; 95:135-42. [PMID: 26597969 DOI: 10.1177/0022034515618382] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Chronic pain, when not effectively treated, is a leading health and socioeconomic problem and has a harmful effect on all aspects of health-related quality of life. Therefore, understanding the molecular mechanism of how pain transitions from the acute to chronic phase is essential for developing effective novel analgesics. Accumulated evidence has shown that the transition from acute to chronic pain is determined by a cellular signaling switch called hyperalgesic priming, which occurs in primary nociceptive afferents. The hyperalgesic priming is triggered by inflammatory mediators and is involved in a signal switch from protein kinase A (PKA) to protein kinase Cε (PKCε) located in both isolectin B4 (IB4)-positive (nonpeptidergic) and IB4-negative (peptidergic) nociceptors. Acidosis may be the decisive factor regulating the PKA-to-PKCε signal switch in a proton-sensing G-protein-coupled receptor-dependent manner. Protons can also induce the hyperalgesic priming in IB4-negative muscle nociceptors in a PKCε-independent manner. Acid-sensing ion channel 3 (ASIC3) and transient receptor potential/vanilloid receptor subtype 1 (TRPV1) are 2 major acid sensors involved in the proton-induced hyperalgesic priming. The proton-induced hyperalgesic priming in muscle afferents can be prevented by a substance P-mediated signaling pathway. In this review, we summarize the factors that modulate hyperalgesic priming in both IB4-positive and IB4-negative nociceptors and discuss the role of acid signaling in inflammatory and noninflammatory pain as well as orofacial muscle pain.
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Affiliation(s)
- W H Sun
- Department of Life Sciences, National Central University, Jhongli, Taiwan
| | - C C Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan Taiwan Mouse Clinic-National Comprehensive Mouse Phenotyping and Drug Testing Center, Academia Sinica, Taipei, Taiwan
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