1
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Ochiai T, Sasaki Y, Yokoyama C, Kuwata H, Hara S. Absence of prostacyclin greatly relieves cyclophosphamide-induced cystitis and bladder pain in mice. FASEB J 2021; 35:e21952. [PMID: 34555210 DOI: 10.1096/fj.202101025r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/18/2021] [Accepted: 09/09/2021] [Indexed: 01/22/2023]
Abstract
Cyclophosphamide (CP) has been widely used in the treatment of various malignancies and autoimmune diseases, but acrolein, a byproduct of CP, causes severe hemorrhagic cystitis as the major side effect of CP. On the other hand, a large amount of prostacyclin (PGI2 ) is produced in bladder tissues, and PGI2 has been shown to play a critical role in bladder homeostasis. PGI2 is biosynthesized from prostaglandin (PG) H2 , the common precursor of PGs, by PGI2 synthase (PTGIS) and is known to also be involved in inflammatory responses. However, little is known about the roles of PTGIS-derived PGI2 in bladder inflammation including CP-induced hemorrhagic cystitis. Using both genetic and pharmacological approaches, we here revealed that PTGIS-derived PGI2 -IP (PGI2 receptor) signaling exacerbated CP-induced bladder inflammatory reactions. Ptgis deficiency attenuated CP-induced vascular permeability and chemokine-mediated neutrophil migration into bladder tissues and then suppressed hemorrhagic cystitis. Treatment with RO1138452, an IP selective antagonist, also suppressed CP-induced cystitis. We further found that cystitis-related nociceptive behavior was also relieved in both Ptgis-/- mice and RO1138452-treated mice. Our findings may provide new drug targets for bladder inflammation and inflammatory pain in CP-induced hemorrhagic cystitis.
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Affiliation(s)
- Tsubasa Ochiai
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Yuka Sasaki
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Chieko Yokoyama
- Department of Nutrition and Life Science, Kanagawa Institute of Technology, Atsugi, Japan
| | - Hiroshi Kuwata
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Shuntaro Hara
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
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2
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Jang Y, Kim M, Hwang SW. Molecular mechanisms underlying the actions of arachidonic acid-derived prostaglandins on peripheral nociception. J Neuroinflammation 2020; 17:30. [PMID: 31969159 PMCID: PMC6975075 DOI: 10.1186/s12974-020-1703-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 01/06/2020] [Indexed: 12/30/2022] Open
Abstract
Arachidonic acid-derived prostaglandins not only contribute to the development of inflammation as intercellular pro-inflammatory mediators, but also promote the excitability of the peripheral somatosensory system, contributing to pain exacerbation. Peripheral tissues undergo many forms of diseases that are frequently accompanied by inflammation. The somatosensory nerves innervating the inflamed areas experience heightened excitability and generate and transmit pain signals. Extensive studies have been carried out to elucidate how prostaglandins play their roles for such signaling at the cellular and molecular levels. Here, we briefly summarize the roles of arachidonic acid-derived prostaglandins, focusing on four prostaglandins and one thromboxane, particularly in terms of their actions on afferent nociceptors. We discuss the biosynthesis of the prostaglandins, their specific action sites, the pathological alteration of the expression levels of related proteins, the neuronal outcomes of receptor stimulation, their correlation with behavioral nociception, and the pharmacological efficacy of their regulators. This overview will help to a better understanding of the pathological roles that prostaglandins play in the somatosensory system and to a finding of critical molecular contributors to normalizing pain.
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Affiliation(s)
- Yongwoo Jang
- Department of Psychiatry and Program in Neuroscience, McLean Hospital, Harvard Medical School, Belmont, MA, 02478, USA.,Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Minseok Kim
- Department of Biomedical Sciences, Korea University, Seoul, 02841, South Korea
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University, Seoul, 02841, South Korea. .,Department of Physiology, College of Medicine, Korea University, Seoul, 02841, South Korea.
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3
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Theken KN. Variability in analgesic response to non-steroidal anti-inflammatory drugs. Prostaglandins Other Lipid Mediat 2018; 139:63-70. [PMID: 30393163 DOI: 10.1016/j.prostaglandins.2018.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/20/2018] [Accepted: 10/18/2018] [Indexed: 01/10/2023]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are among the most commonly used agents for the treatment of acute and chronic pain. However, it has long been recognized that there is substantial inter-individual variability in the analgesic response to NSAIDs, reflecting the complex interplay between mechanisms of pain, differences between distinct NSAIDs, and patient-specific factors such as genetic variation. This review summarizes the current knowledge regarding how these factors contribute to variability in the analgesic response to NSAIDs.
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Affiliation(s)
- Katherine N Theken
- Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States.
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4
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Adachi H, Nakae K, Sakamoto S, Nosaka C, Atsumi S, Shibuya M, Higashi N, Nakajima M, Irimura T, Nishimura Y. Microbial metabolites and derivatives targeted at inflammation and bone diseases therapy: chemistry, biological activity and pharmacology. J Antibiot (Tokyo) 2017; 71:ja2017138. [PMID: 29089599 DOI: 10.1038/ja.2017.138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/22/2017] [Accepted: 10/04/2017] [Indexed: 12/19/2022]
Abstract
Microbial metabolites have attracted increasing interest as a source of therapeutics and as probes for biological mechanisms. New microbial metabolites and derivatives targeted at inflammation and bone disease therapy have been identified by focusing on prostaglandin release, osteoblast differentiation and immune cell functions. These modulators of inflammatory processes and bone disease contribute to our understanding of biological mechanisms and support identification of the therapeutic potential of drug lead candidates. The present review describes recent advances in the chemistry and analysis of inhibitors of prostaglandin release or other functional molecules of immune cells, as well as inducers of osteoblast differentiation, including biological and pharmacological activities.The Journal of Antibiotics advance online publication, 1 November 2017; doi:10.1038/ja.2017.138.
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Affiliation(s)
- Hayamitsu Adachi
- Institute of Microbial Chemistry (BIKAKEN), Numazu Branch, Shizuoka, Japan
| | - Koichi Nakae
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, Japan
| | - Shuichi Sakamoto
- Institute of Microbial Chemistry (BIKAKEN), Numazu Branch, Shizuoka, Japan
| | - Chisato Nosaka
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, Japan
| | - Sonoko Atsumi
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, Japan
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5
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Reynders A, Mantilleri A, Malapert P, Rialle S, Nidelet S, Laffray S, Beurrier C, Bourinet E, Moqrich A. Transcriptional Profiling of Cutaneous MRGPRD Free Nerve Endings and C-LTMRs. Cell Rep 2015; 10:1007-1019. [PMID: 25683706 PMCID: PMC4542317 DOI: 10.1016/j.celrep.2015.01.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 12/13/2014] [Accepted: 01/08/2015] [Indexed: 01/06/2023] Open
Abstract
Cutaneous C-unmyelinated MRGPRD+ free nerve endings and C-LTMRs innervating hair follicles convey two opposite aspects of touch sensation: a sensation of pain and a sensation of pleasant touch. The molecular mechanisms underlying these diametrically opposite functions are unknown. Here, we used a mouse model that genetically marks C-LTMRs and MRGPRD+ neurons in combination with fluorescent cell surface labeling, flow cytometry, and RNA deep-sequencing technology (RNA-seq). Cluster analysis of RNA-seq profiles of the purified neuronal subsets revealed 486 and 549 genes differentially expressed in MRGPRD-expressing neurons and C-LTMRs, respectively. We validated 48 MRGPD- and 68 C-LTMRs-enriched genes using a triple-staining approach, and the Cav3.3 channel, found to be exclusively expressed in C-LTMRs, was validated using electrophysiology. Our study greatly expands the molecular characterization of C-LTMRs and suggests that this particular population of neurons shares some molecular features with Aβ and Aδ low-threshold mechanoreceptors.
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Affiliation(s)
- Ana Reynders
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, Case 907, 13288 Marseille Cedex 09, France
| | - Annabelle Mantilleri
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, Case 907, 13288 Marseille Cedex 09, France
| | - Pascale Malapert
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, Case 907, 13288 Marseille Cedex 09, France
| | - Stéphanie Rialle
- Laboratories of Excellence, Ion Channel Science and Therapeutics, Institut de Génomique Fonctionnelle, UMR 5203, CNRS, U1191, INSERM, Université de Montpellier, 141 Rue de la Cardonille, 34094 Montpellier Cedex 05, France
| | - Sabine Nidelet
- Laboratories of Excellence, Ion Channel Science and Therapeutics, Institut de Génomique Fonctionnelle, UMR 5203, CNRS, U1191, INSERM, Université de Montpellier, 141 Rue de la Cardonille, 34094 Montpellier Cedex 05, France
| | - Sophie Laffray
- Laboratories of Excellence, Ion Channel Science and Therapeutics, Institut de Génomique Fonctionnelle, UMR 5203, CNRS, U1191, INSERM, Université de Montpellier, 141 Rue de la Cardonille, 34094 Montpellier Cedex 05, France
| | - Corinne Beurrier
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, Case 907, 13288 Marseille Cedex 09, France
| | - Emmanuel Bourinet
- Laboratories of Excellence, Ion Channel Science and Therapeutics, Institut de Génomique Fonctionnelle, UMR 5203, CNRS, U1191, INSERM, Université de Montpellier, 141 Rue de la Cardonille, 34094 Montpellier Cedex 05, France.
| | - Aziz Moqrich
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, Case 907, 13288 Marseille Cedex 09, France.
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6
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Prostanoids and inflammatory pain. Prostaglandins Other Lipid Mediat 2013; 104-105:58-66. [DOI: 10.1016/j.prostaglandins.2012.08.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/20/2012] [Accepted: 08/23/2012] [Indexed: 01/16/2023]
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7
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Nakae K, Adachi H, Sawa R, Hosokawa N, Hatano M, Igarashi M, Nishimura Y, Akamatsu Y, Nomoto A. NAD(P)H quinone oxidoreductase 1 (NQO1)-bioactivated pronqodine A regulates prostaglandin release from human synovial sarcoma cells. JOURNAL OF NATURAL PRODUCTS 2013; 76:510-515. [PMID: 23425216 DOI: 10.1021/np300643f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Natural products have contributed to the elucidation of biological mechanisms as well as drug discovery research. Even now, the expectation for natural products is undiminished. We screened prostaglandin release inhibitors that had no effect on in vitro cyclooxygenase activity derived from natural product sources and discovered pronqodine A. Using spectral analysis and total synthesis, the structure of pronqodine A was shown to be a benzo[d]isothiazole-4,7-dione analogue. Evaluation of the biological activity of pronqodine A revealed that the NAD(P)H dehydrogenase quinone 1 (NQO1) converted pronqodine A into a two-electron reductive form. The reductive form underwent autoxidation and reversed to its native form immediately with the generation of reactive oxygen species. Further investigations proved that pronqodine A inhibited cyclooxygenase enzyme activity only in the presence of NQO1. Pronqodine A acts as a potential bioreductive compound, inhibiting prostaglandin release in selectively activated NQO1-expressing cells.
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Affiliation(s)
- Koichi Nakae
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan.
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8
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Petho G, Reeh PW. Sensory and signaling mechanisms of bradykinin, eicosanoids, platelet-activating factor, and nitric oxide in peripheral nociceptors. Physiol Rev 2013; 92:1699-775. [PMID: 23073630 DOI: 10.1152/physrev.00048.2010] [Citation(s) in RCA: 191] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Peripheral mediators can contribute to the development and maintenance of inflammatory and neuropathic pain and its concomitants (hyperalgesia and allodynia) via two mechanisms. Activation or excitation by these substances of nociceptive nerve endings or fibers implicates generation of action potentials which then travel to the central nervous system and may induce pain sensation. Sensitization of nociceptors refers to their increased responsiveness to either thermal, mechanical, or chemical stimuli that may be translated to corresponding hyperalgesias. This review aims to give an account of the excitatory and sensitizing actions of inflammatory mediators including bradykinin, prostaglandins, thromboxanes, leukotrienes, platelet-activating factor, and nitric oxide on nociceptive primary afferent neurons. Manifestations, receptor molecules, and intracellular signaling mechanisms of the effects of these mediators are discussed in detail. With regard to signaling, most data reported have been obtained from transfected nonneuronal cells and somata of cultured sensory neurons as these structures are more accessible to direct study of sensory and signal transduction. The peripheral processes of sensory neurons, where painful stimuli actually affect the nociceptors in vivo, show marked differences with respect to biophysics, ultrastructure, and equipment with receptors and ion channels compared with cellular models. Therefore, an effort was made to highlight signaling mechanisms for which supporting data from molecular, cellular, and behavioral models are consistent with findings that reflect properties of peripheral nociceptive nerve endings. Identified molecular elements of these signaling pathways may serve as validated targets for development of novel types of analgesic drugs.
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Affiliation(s)
- Gábor Petho
- Pharmacodynamics Unit, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs, Hungary
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9
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Woodward DF, Jones RL, Narumiya S. International Union of Basic and Clinical Pharmacology. LXXXIII: classification of prostanoid receptors, updating 15 years of progress. Pharmacol Rev 2011; 63:471-538. [PMID: 21752876 DOI: 10.1124/pr.110.003517] [Citation(s) in RCA: 321] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
It is now more than 15 years since the molecular structures of the major prostanoid receptors were elucidated. Since then, substantial progress has been achieved with respect to distribution and function, signal transduction mechanisms, and the design of agonists and antagonists (http://www.iuphar-db.org/DATABASE/FamilyIntroductionForward?familyId=58). This review systematically details these advances. More recent developments in prostanoid receptor research are included. The DP(2) receptor, also termed CRTH2, has little structural resemblance to DP(1) and other receptors described in the original prostanoid receptor classification. DP(2) receptors are more closely related to chemoattractant receptors. Prostanoid receptors have also been found to heterodimerize with other prostanoid receptor subtypes and nonprostanoids. This may extend signal transduction pathways and create new ligand recognition sites: prostacyclin/thromboxane A(2) heterodimeric receptors for 8-epi-prostaglandin E(2), wild-type/alternative (alt4) heterodimers for the prostaglandin FP receptor for bimatoprost and the prostamides. It is anticipated that the 15 years of research progress described herein will lead to novel therapeutic entities.
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Affiliation(s)
- D F Woodward
- Dept. of Biological Sciences RD3-2B, Allergan, Inc., 2525 Dupont Dr., Irvine, CA 92612, USA.
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10
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Ebersberger A, Natura G, Eitner A, Halbhuber KJ, Rost R, Schaible HG. Effects of prostaglandin D2 on tetrodotoxin-resistant Na+ currents in DRG neurons of adult rat. Pain 2011; 152:1114-1126. [DOI: 10.1016/j.pain.2011.01.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 12/23/2010] [Accepted: 01/18/2011] [Indexed: 11/28/2022]
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Abstract
CONCLUSION EP4, EP2, and IP prostanoid receptors exert an otoprotective function and FP may be important for fluid homeostasis in the inner ear. OBJECTIVE To investigate the expression of prostanoid receptors in the normal mouse inner ear. METHODS CBA/J mice were used in this study. The localization of prostanoid receptors, i.e. DP, EP1, EP2, EP3, EP4, FP, IP, and TP, in the inner ear, i.e. the cochlea, vestibular end organs, endolymphatic sac, was studied by immunohistochemical techniques. RESULTS The EP4, IP, and FP prostanoid receptors were found to be abundantly distributed in many inner ear structures, i.e. stria vascularis, inner and outer hair cells, spiral ganglion cells, vestibular sensory and ganglion cells, and the endolymphatic sac. EP2 and EP3 are also localized in the inner ear whereas DP, EP1, and TP are only weakly expressed.
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Affiliation(s)
- Masaya Takumida
- Department of Otolaryngology, Hiroshima University Hospital, Hiroshima, Japan.
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12
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Wienecke T, Olesen J, Ashina M. Prostaglandin I2 (epoprostenol) triggers migraine-like attacks in migraineurs. Cephalalgia 2009; 30:179-90. [DOI: 10.1111/j.1468-2982.2009.01923.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Prostacyclin [prostaglandin I2 (PGI2)] activates and sensitizes meningeal sensory afferents. In healthy subjects PGI2 triggers headache in healthy subjects. However, the migraine-eliciting effect of PGI2 has not been systematically studied in patients with migraine. We hypothesized that intravenous infusion of the stable prostacyclin analogue epoprostenol would trigger migraine-like attacks in migraineurs. We infused 10 ng kg−1 min−1 PGI2 or placebo over 25 min in 12 migraineurs without aura in a controlled, double-blind, cross-over study and recorded headache intensity and associated symptons, velocity in the middle cerebral artery (VMCA) and diameter in the superficial temporal artery. In the period 0–14 h, 12 subjects reported headache on PGI2 day compared with three subjects on placebo day ( P = 0.004), and six subjects fulfilled the criteria for an experimentally induced migraine-like attack compared with two subjects on placebo ( P = 0.219). During infusion and post-infusion phases the AUC under the headache curve on PGI2 was significantly larger than on placebo ( P < 0.05). There was a significant VMCA decrease ( P = 0.015) and superficial temporal artery diameter increase ( P < 0.001) on PGI2 compared with placebo. In conclusion, PGI2 may trigger a migraine-like attack in migraine sufferers. We suggest sensitization of perivascular nociceptors and arterial dilation as the mode of action of PGI2-induced headache and migraine-like attacks.
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Affiliation(s)
- T Wienecke
- Danish Headache Centre and Department of Neurology, Glostrup Hospital, Faculty of Health Sciences, University of Copenhagen, Glostrup, Copenhagen, Denmark
| | - J Olesen
- Danish Headache Centre and Department of Neurology, Glostrup Hospital, Faculty of Health Sciences, University of Copenhagen, Glostrup, Copenhagen, Denmark
| | - M Ashina
- Danish Headache Centre and Department of Neurology, Glostrup Hospital, Faculty of Health Sciences, University of Copenhagen, Glostrup, Copenhagen, Denmark
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13
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Wienecke T, Olesen J, Oturai PS, Ashina M. Prostacyclin (epoprostenol) induces headache in healthy subjects. Pain 2008; 139:106-116. [DOI: 10.1016/j.pain.2008.03.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2007] [Revised: 03/04/2008] [Accepted: 03/17/2008] [Indexed: 11/25/2022]
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14
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Telleria-Diaz A, Ebersberger A, Vasquez E, Schache F, Kahlenbach J, Schaible HG. Different effects of spinally applied prostaglandin D2 on responses of dorsal horn neurons with knee input in normal rats and in rats with acute knee inflammation. Neuroscience 2008; 156:184-92. [PMID: 18678231 DOI: 10.1016/j.neuroscience.2008.07.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2008] [Revised: 06/19/2008] [Accepted: 07/10/2008] [Indexed: 11/18/2022]
Abstract
Prostaglandin D2(PGD2) is the most produced prostanoid in the CNS of mammals, and in behavioral experiments it has been implicated in the modulation of spinal nociception. In the present study we addressed the effects of spinal PGD2 on the discharge properties of nociceptive spinal cord neurons with input from the knee joint using extracellular recordings in vivo, both in normal rats and in rats with acute inflammation in the knee joint. Topical application of PGD2 to the spinal cord of normal rats did not influence responses to mechanical stimulation of the knee and ankle joint except at a high dose. Specific agonists at either the prostaglandin D2 receptor 1 (DP1) or the prostaglandin D2 receptor 2 (DP2) receptor had no effect on responses to mechanical stimulation of the normal knee. By contrast, in rats with inflamed knee joints either PGD2 or a DP1 receptor agonist decreased responses to mechanical stimulation of the inflamed knee and the non-inflamed ankle thus reducing established inflammation-evoked spinal hyperexcitability. Vice versa, spinal application of an antagonist at DP1 receptors increased responses to mechanical stimulation of the inflamed knee joint and the non-inflamed ankle joint suggesting that endogenous PGD2 attenuated central sensitization under inflammatory conditions, through activation of DP1 receptors. Spinal application of a DP2 receptor antagonist had no effect. The conclusion that spinal PGD2 attenuates spinal hyperexcitability under inflammatory conditions is further supported by the finding that spinal coapplication of PGD2 with prostaglandin E2 (PGE2) attenuated the PGE2-induced facilitation of responses to mechanical stimulation of the normal joint.
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Affiliation(s)
- A Telleria-Diaz
- Department of Physiology I, Neurophysiology, Friedrich-Schiller-Universität Jena, Teichgraben 8, D-07740 Jena, Germany
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15
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Effects of the Selective Prostacyclin Receptor Antagonist RO3244019 on the Micturition Reflex in Rats. J Urol 2007; 178:2683-8. [DOI: 10.1016/j.juro.2007.07.122] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2007] [Indexed: 11/22/2022]
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16
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Zhang XC, Strassman AM, Burstein R, Levy D. Sensitization and Activation of Intracranial Meningeal Nociceptors by Mast Cell Mediators. J Pharmacol Exp Ther 2007; 322:806-12. [PMID: 17483291 DOI: 10.1124/jpet.107.123745] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Intracranial headaches such as migraine are thought to result from activation of sensory trigeminal pain neurons that supply intracranial blood vessels and the meninges, also known as meningeal nociceptors. Although the mechanism underlying the triggering of such activation is not completely understood, our previous work indicates that the local activation of the inflammatory dural mast cells can provoke a persistent sensitization of meningeal nociceptors. Given the potential importance of mast cells to the pain of migraine it is important to understand which mast cell-derived mediators interact with meningeal nociceptors to promote their activation and sensitization. In the present study, we have used in vivo electrophysiological single-unit recording of meningeal nociceptors in the trigeminal ganglion of anesthetized rats to examine the effect of a number of mast cell mediators on the activity level and mechanosensitivity of meningeal nociceptors. We have found that that serotonin (5-HT), prostaglandin I(2) (PGI(2)), and to a lesser extent histamine can promote a robust sensitization and activation of meningeal nociceptors, whereas the inflammatory eicosanoids PGD(2) and leukotriene C(4) are largely ineffective. We propose that dural mast cells could promote headache by releasing 5-HT, PGI(2), and histamine.
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Affiliation(s)
- Xi-Chun Zhang
- Headache Research Laboratory, Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Institutes of Medicine, Room 856, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
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17
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van de Sande M, Gais HJ. Asymmetric Synthesis of 3-Oxa-15-deoxy-16-(m-tolyl)-17,18,19,20-tetranorisocarbacyclin and Its Neuroprotective Analogue 15-Deoxy-16-(m-tolyl)-17,18,19,20-tetranorisocarbacyclin Based on the Conjugate Addition–Azoalkene–Asymmetric Olefination Strategy. Chemistry 2007; 13:1784-95. [PMID: 17106906 DOI: 10.1002/chem.200600728] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A fully stereocontrolled synthesis of 3-oxa-15-deoxy-16-(m-tolyl)-17,18,19,20-tetranorisocarbacyclin (3-oxa-15-deoxy-TIC, 7 b) and a formal one of 15-deoxy-16-(m-tolyl)-17,18,19,20-tetranorisocarbacyclin (15-deoxy-TIC, 7 a) are described. 15-Deoxy-TIC is specific for the neuronal prostacyclin receptor (IP2) and exhibits neuroprotective activities, and the new 3-oxa-15-deoxy-TIC is expected to be metabolically more stable than 15-deoxy-TIC. The syntheses of 7 a and 7 b are based on the convergent conjugate addition-azoalkene-asymmetric olefination strategy. Key building blocks are the readily available bicyclic azoalkene 14 and the alkenylcopper derivative 15. The stereoselective conjugate addition of 15 to 14 gave hydrazone 13, which was stereoselectively converted to the bicyclic ketone 11. The key steps for the construction of the alpha side chain of 7 a and 7 b and the regioselective introduction of the endocyclic Delta6,6a double bond are: 1) a highly selective asymmetric olefination of ketone 11 with the chiral Horner-Wadsworth-Emmons reagent 28 and 2) a regioselective deconjugation of the alpha,beta-unsaturated ester (E)-10 with the chiral lithium amide 29, which gave the beta,gamma-unsaturated ester anti-9 with high selectivity. The homoallylic alcohol 8 served at a late stage as the joint intermediate in the syntheses of 7 a and 7 b. While an etherification of 8 furnished, after hydrolysis and deprotection, 3-oxa-15-deoxy-TIC, its alkylation afforded alcohol 37, the known precursor for the synthesis of 15-deoxy-TIC.
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Affiliation(s)
- Marc van de Sande
- Institut für Organische Chemie, Rheinisch-Westfälischen Technischen Hochschule (RWTH) Aachen, Landoltweg 1, 52056 Aachen, Germany
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Pearson JT, Shirai M, Yokoyama C, Tsuchimochi H, Schwenke DO, Shimouchi A, Kangawa K, Tanabe T. α2-Adrenoreceptor mediated sympathoinhibition of heart rate during acute hypoxia is diminished in conscious prostacyclin synthase deficient mice. Pflugers Arch 2006; 454:29-39. [PMID: 17120018 DOI: 10.1007/s00424-006-0175-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Revised: 08/24/2006] [Accepted: 09/19/2006] [Indexed: 10/23/2022]
Abstract
Acute hypoxia increases ventilatory drive in conscious animals, resulting in tachycardia. Sustained hypoxia changes the initial chemoreflex ventilatory increase to secondary ventilatory depression, which then evokes a gradual secondary heart rate (HR) reduction. Prostacyclin (PGI(2)) release is known to potentiate alpha(2)-adrenoreceptor (alpha(2)-AR) mediated inhibition of sympathoactivation during ischaemia and hypoxia. We examined whether alpha(2)-AR mediated sympathoinhibition was responsible for limiting hypoxic heart rate increases during initial sympathoactivation, and subsequent secondary HR depression, and if PGI(2) is required for sympathoinhibition of HR. The responses of unrestrained PGI(2) synthase deficient (PGID) and wild type (WT) mice to acute hypoxia (10% O(2) for 30 min) were investigated by simultaneous telemetry, whole body plethysmography and open-flow respirometry. PGID mice exhibited potentiated .V(E) (p < 0.007) after intraperitoneal vehicle injection (n = 8), but not so HR responses compared to WT mice during sustained hypoxia. Idazoxan (alpha(2)-AR antagonist, i.p. bolus 3 mg/kg) pretreatment did not change hypoxic ventilatory response in either group, but significantly elevated hypoxic HR in WT mice only (p < 0.013). Sodium meclofenamate (cyclooxygenase inhibition, i.p. bolus 25 mg/kg) pretreatment eliminated the potentiated .V(E) of PGID and caused significant basal hypotension that led to a transient hypertensive response to hypoxia. From these results, we suggest that alpha(2)-AR activation is required for coupling HR to central inspiratory drive during acute hypoxia, and that PGI(2) is required to enhance the inhibition of sympathoactivation.
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Affiliation(s)
- James T Pearson
- Department of Cardiac Physiology, National Cardiovascular Center Research Institute, Suita-shi, Osaka 565-8565, Japan
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Bley KR, Bhattacharya A, Daniels DV, Gever J, Jahangir A, O'Yang C, Smith S, Srinivasan D, Ford APDW, Jett MF. RO1138452 and RO3244794: characterization of structurally distinct, potent and selective IP (prostacyclin) receptor antagonists. Br J Pharmacol 2006; 147:335-45. [PMID: 16331286 PMCID: PMC1751302 DOI: 10.1038/sj.bjp.0706554] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 10/04/2005] [Accepted: 10/27/2005] [Indexed: 11/09/2022] Open
Abstract
Prostacyclin (PGI2) possesses various physiological functions, including modulation of nociception, inflammation and cardiovascular activity. Elucidation of these functions has been hampered by the absence of selective IP receptor antagonists. Two structurally distinct series of IP receptor antagonists have been developed: 4,5-dihydro-1H-imidazol-2-yl)-[4-(4-isopropoxy-benzyl)-phenyl]-amine (RO1138452) and R-3-(4-fluoro-phenyl)-2-[5-(4-fluoro-phenyl)-benzofuran-2-ylmethoxycarbonylamino]-propionic acid (RO3244794).RO1138452 and RO3244794 display high affinity for IP receptors. In human platelets, the receptor affinities (pKi) were 9.3 +/- 0.1 and 7.7 +/- 0.03, respectively; in a recombinant IP receptor system, pKi values were 8.7 +/- 0.06 and 6.9 +/- 0.1, respectively. Functional antagonism of RO1138452 and RO3244794 was studied by measuring inhibition of carbaprostacyclin-induced cAMP accumulation in CHO-K1 cells stably expressing the human IP receptor. The antagonist affinities (pKi) of RO1138452 and RO3244794 were 9.0 +/- 0.06 and 8.5 +/- 0.11, respectively. Selectivity profiles for RO1138452 and RO3244794 were determined via a panel of receptor binding and enzyme assays. RO1138452 displayed affinity at I2 (8.3) and PAF (7.9) receptors, while RO3244794 was highly selective for the IP receptor: pKi values for EP1 (< 5), EP3 (5.38), EP4 (5.74) and TP (5.09). RO1138452 (1-10 mg kg(-1), i.v.) and RO3244794 (1-30 mg kg(-1), i.v.) significantly reduced acetic acid-induced abdominal constrictions. RO1138452 (3-100 mg kg(-1), p.o.) and RO3244794 (0.3-30 mg kg(-1), p.o.) significantly reduced carrageenan-induced mechanical hyperalgesia and edema formation. RO3244794 (1 and 10 mg kg(-1), p.o.) also significantly reduced chronic joint discomfort induced by monoiodoacetate. These data suggest that RO1138452 and RO3244794 are potent and selective antagonists for both human and rat IP receptors and that they possess analgesic and anti-inflammatory potential.
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Affiliation(s)
- Keith R Bley
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
| | | | - Don V Daniels
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
| | - Joel Gever
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
| | - Alam Jahangir
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
| | - Counde O'Yang
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
| | - Steven Smith
- Roche Palo Alto, 3431 Hillview Ave., Palo Alto, CA 94304, U.S.A
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Nakae K, Hosokawa N, Sawa R, Kubota Y, Masuda T, Ohba S, Igarashi M, Nakagawa N, Nishimura Y, Akamatsu Y. A New Teleocidin Analog from Streptomyces sp. MM216-87F4 Induces Substance P Release from Rat Dorsal Root Ganglion Neurons. J Antibiot (Tokyo) 2006; 59:11-7. [PMID: 16568714 DOI: 10.1038/ja.2006.3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new teleocidin analog was isolated from the fermentation medium of Streptomyces sp. MM216-87F4 and its structure was elucidated as 14-O-(N-acetylglucosaminyl) teleocidin A (GlcNAc-TA). GlcNAc-TA induces the translocation of protein kinases Calpha and theta fused with enhanced green fluorescent protein (PKCalpha-EGFP and PKCtheta-EGFP) to the plasma membrane in stable transfectants, and reduces intracellular calcium mobilization induced by agonists of G-protein coupled receptors in various cell lines without causing irritation of the mouse ear. Further, GlcNAc-TA sensitizes the release of excitatory neuropeptides substance P induced by capsaicin from primary-cultured dorsal root ganglion (DRG) neurons of the rat and GlcNAc-TA alone also triggers substance P release in a dose-dependent manner. This study provides the first observation that a teleocidin analog without a free hydroxyl group at C-14 acts as a PKC activator and directly induces the release of excitatory neuropeptide.
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Affiliation(s)
- Koichi Nakae
- Microbial Chemistry Research Center, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan.
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