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Blanton HL, Pietrzak A, McHann MC, Guindon J. Sex and dose-dependent antinociceptive effects of the JNK (c-Jun N-terminal kinase) inhibitor SU 3327 are mediated by CB 2 receptors in female, and CB 1/CB 2 receptors in male mice in an inflammatory pain model. Brain Res Bull 2021; 177:39-52. [PMID: 34530070 DOI: 10.1016/j.brainresbull.2021.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/31/2021] [Accepted: 09/07/2021] [Indexed: 11/30/2022]
Abstract
Activation of c-Jun N-terminal kinases (JNKs) has been implicated in the development and persistence of inflammatory and neuropathic pain in animal models. Moreover, JNKs have been involved in the maintenance of chronic pain, as well as development of tolerance to antinociceptive agents in the opioid and cannabinoid class of compounds. In this study, we evaluated the antinociceptive effects of the JNK inhibitor SU 3327 (0.3-30 mg/kg) in the formalin pain model with an emphasis on the sex-specific actions of this compound. In wild-type C57BL6J mice, SU 3327 produced strong antinociceptive effects in the formalin pain model which were mediated by CB2 receptors in females, and both CB1 and CB2 receptors in males. SU 3327 at a dose of 10 mg/kg produced antinociception, hypothermia, motor impairment, and hypolocomotion to a similar extent in both males and females. The antinociceptive effects of SU 3327 were more potent in males at lower doses (1 and 3 mg/kg), while females were more sensitive to the hypothermic, and motor-suppression effects at lower (3 mg/kg) doses versus males. Analysis of spinal cords, using qPCR following SU 3327 administration in the formalin test, revealed changes in cannabinoid, tolerance and inflammatory markers in females only, and only in the high (10-30 mg/kg) dose conditions. Indeed, females showed an increase in mRNA levels of cannabinoid (CB2), but a decrease in tolerance (β-arrestin 1) and inflammatory (TNF-α, IL-1β, IL-6)-associated markers. The differences between males and females, in this study, support sex as an important factor in nociception and antinociceptive responses mediated by JNK and the endocannabinoid system.
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Affiliation(s)
- Henry L Blanton
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, 3601 4th Street STOP 6592, Lubbock, TX 79430, USA
| | - Agata Pietrzak
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, 3601 4th Street STOP 6592, Lubbock, TX 79430, USA
| | - Melissa C McHann
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, 3601 4th Street STOP 6592, Lubbock, TX 79430, USA
| | - Josée Guindon
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, 3601 4th Street STOP 6592, Lubbock, TX 79430, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
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Torkamand F, Aghakhani-Lobnani AM, Khaleghzadeh-Ahangar H, Rashvand M, Rahban M, Haghparast A. The role of dentate gyrus dopaminergic receptors in the lateral hypothalamic-induced antinociception during persistent inflammatory pain in male rats. Behav Brain Res 2021; 412:113434. [PMID: 34175356 DOI: 10.1016/j.bbr.2021.113434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/29/2021] [Accepted: 06/22/2021] [Indexed: 12/26/2022]
Abstract
The lateral hypothalamus (LH) is one of the key brain areas involved in pain modulation. Also, the dentate gyrus (DG) of the hippocampus expresses various receptors, including dopaminergic receptors. Dopaminergic receptors play a key role in pain transmission and modulation within the brain. The present study aimed to investigate the involvement of DG dopaminergic receptors in the LH-induced antinociception during the presence of inflammatory pain. Male Wistar rats were used in this study. Cannulae were unilaterally implanted in their skull for microinjections into the LH and DG. The LH was chemically stimulated by carbachol injection (250 nM/0.5 μl saline). In separate groups, different doses (0.25, 1, and 4 μg/0.5 μl vehicle) of the D1- and D2-like dopamine receptor antagonists (SCH23390 and Sulpiride, respectively) were microinjected into the DG, 5 min prior to intra-LH injection of carbachol. Five min after the second injection, formalin test as a persistent inflammatory pain model in animals was done in all rats. The results revealed that carbachol could induce antinociception following formalin injection into rat's hind paw. The 4 μg dose of both antagonists significantly reduced the LH stimulation-induced antinociception in both phases of formalin pain responses. Although the 1 μg dose of sulpiride significantly reduced antinociception during both phases, 1 μg SCH23390 could only reduce this antinociception during the late phase. These findings demonstrate the involvement of DG dopaminergic receptors in the LH-induced antinociception. The results also suggest that the effectiveness of DG dopaminergic receptors is more pronounced during the late phase of formalin-induced pain responses.
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Affiliation(s)
- Farbod Torkamand
- Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hossein Khaleghzadeh-Ahangar
- Department of Physiology, School of Medicine, Babol University of Medical Sciences, Babol, Iran; Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
| | - Mina Rashvand
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Rahban
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Antipyretic, Antinociceptive, and Anti-Inflammatory Activities from Pogostemon benghalensis Leaf Extract in Experimental Wister Rats. MEDICINES 2019; 6:medicines6040096. [PMID: 31547083 PMCID: PMC6963183 DOI: 10.3390/medicines6040096] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 01/21/2023]
Abstract
Background:Pogostemon benghalensis leaves have traditionally been utilized for relieving body aches, headaches and fever. Based on its uses, the present study was designed to investigate the antinociceptive, antipyretic and anti-edematogenic activities from P. benghalensis leaves’ methanol extract (PBME) in Wister rats. Methods: The thermal (hot plate) and chemical (acetic acid-induced writhing and formalin test) models for antinociceptive effects, and the Brewer’s yeast induced hyperthermia test for antipyretic action and rat paw edema by carrageenan for anti-edematogenic activity, were applied for PBME at different dose levels. The acute toxicity of PBME through the oral route was performed to determine the lethal dose. Results: PBME significantly and dose-dependently reduced pyrexia and diminished edema volume, which depicted its antipyretic and anti-edematogenic effects respectively. The inhibition of writhing reflex, increased reaction latency and reduced frequency of licking indicated that PBME has significant dose-dependent antinociceptive activity. P. benghalensis methanol extract at 4000 mg/kg shows no sign of toxicity, which is a considerable, good margin of safety. Conclusions: The study illustrated the antipyretic, antinociceptive and anti-inflammatory potential of P. benghalensis leaf extract with a safety margin, and validated its traditional use to alleviate fever, pain, and inflammation.
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Analgesic and Anti-Inflammatory Activities of Diethyl Ether and n-Hexane Extract of Polyalthia suberosa Leaves. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:5617234. [PMID: 29599807 PMCID: PMC5827878 DOI: 10.1155/2018/5617234] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 12/25/2017] [Indexed: 01/09/2023]
Abstract
In folk medicine, Polyalthia suberosa is used as abortifacient, laxative, febrifuge analgesic, filler of tooth cavities, and anti-HIV drug and for rheumatism and various skin infections. The present study was directed to evaluate the analgesic and anti-inflammatory activities of diethyl ether and n-hexane extracts of Polyalthia suberosa leaves (PSDE and PSNH). A variety of tests including formalin-induced paw licking test, acetic acid induced writhing test, and tail immersion test were used to assess the analgesic activity. In addition, xylene-induced ear edema test was used to evaluate anti-inflammatory activity of PSDE and PSNH. PSDE and PSNH at 200 and 400 mg/kg doses expressed analgesic as well as anti-inflammatory activities in mice. In formalin-induced paw licking test, acetic acid induced writhing test, and xylene-induced ear edema test, the extracts exhibited significant inhibition (⁎P < 0.05 versus control) of pain and inflammation. Alternatively, in tail immersion test, PSDE 400 mg/kg showed significant (⁎P < 0.05 versus control) latency at 30 min but another tested sample had no significant latency. From this study, it could be shown that Polyalthia suberosa leaves may contain analgesic and anti-inflammatory agents which support its use in traditional medicine.
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Gómez-Paz A, Drucker-Colín R, Milán-Aldaco D, Palomero-Rivero M, Ambriz-Tututi M. Intrastriatal Chromospheres' Transplant Reduces Nociception in Hemiparkinsonian Rats. Neuroscience 2017; 387:123-134. [PMID: 28890053 DOI: 10.1016/j.neuroscience.2017.08.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 08/20/2017] [Accepted: 08/29/2017] [Indexed: 10/18/2022]
Abstract
The present study evaluates the possible antinociceptive effect of chromosphere transplants in rats injected with 6-hydroxydopamine (6-OHDA), a model of Parkinson's disease. Male adult Wistar rats received 40μg/0.5μl of 6-OHDA or 0.5μl of vehicle into the left substantia nigra (SNc). Rats were evaluated for mechanical allodynia, cold allodynia, thermal hyperalgesia and formalin. Rats with altered nociceptive threshold were transplanted with chromospheres. After transplant, rats were evaluated every week. Our results confirm that 6-OHDA injection into rat's SNc reduces mechanical, thermal, and chemical thresholds. Interestingly, chromospheres' transplant reverted 6-OHDA-induced allodynia and hyperalgesia. The antinociceptive effect induced by chromospheres was dopamine D2- and opioid-receptor dependent since sulpiride or naltrexone reverted its effect.
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Affiliation(s)
- Alejandra Gómez-Paz
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - René Drucker-Colín
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Diana Milán-Aldaco
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Marcela Palomero-Rivero
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Mónica Ambriz-Tututi
- Hospital General Ajusco Medio "Dra. Obdulia Rodriguez Rodriguez", Unidad de, Trastornos de Movimiento y Sueño, Mexico.
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Wieskopf JS, Mathur J, Limapichat W, Post MR, Al-Qazzaz M, Sorge RE, Martin LJ, Zaykin DV, Smith SB, Freitas K, Austin JS, Dai F, Zhang J, Marcovitz J, Tuttle AH, Slepian PM, Clarke S, Drenan RM, Janes J, Al Sharari S, Segall SK, Aasvang EK, Lai W, Bittner R, Richards CI, Slade GD, Kehlet H, Walker J, Maskos U, Changeux JP, Devor M, Maixner W, Diatchenko L, Belfer I, Dougherty DA, Su AI, Lummis SCR, Imad Damaj M, Lester HA, Patapoutian A, Mogil JS. The nicotinic α6 subunit gene determines variability in chronic pain sensitivity via cross-inhibition of P2X2/3 receptors. Sci Transl Med 2015; 7:287ra72. [PMID: 25972004 PMCID: PMC5018401 DOI: 10.1126/scitranslmed.3009986] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Chronic pain is a highly prevalent and poorly managed human health problem. We used microarray-based expression genomics in 25 inbred mouse strains to identify dorsal root ganglion (DRG)-expressed genetic contributors to mechanical allodynia, a prominent symptom of chronic pain. We identified expression levels of Chrna6, which encodes the α6 subunit of the nicotinic acetylcholine receptor (nAChR), as highly associated with allodynia. We confirmed the importance of α6* (α6-containing) nAChRs by analyzing both gain- and loss-of-function mutants. We find that mechanical allodynia associated with neuropathic and inflammatory injuries is significantly altered in α6* mutants, and that α6* but not α4* nicotinic receptors are absolutely required for peripheral and/or spinal nicotine analgesia. Furthermore, we show that Chrna6's role in analgesia is at least partially due to direct interaction and cross-inhibition of α6* nAChRs with P2X2/3 receptors in DRG nociceptors. Finally, we establish the relevance of our results to humans by the observation of genetic association in patients suffering from chronic postsurgical and temporomandibular pain.
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Affiliation(s)
- Jeffrey S Wieskopf
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Jayanti Mathur
- Genomic Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Walrati Limapichat
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Michael R Post
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Mona Al-Qazzaz
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1QW, UK
| | - Robert E Sorge
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Loren J Martin
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Dmitri V Zaykin
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Shad B Smith
- Center for Neurosensory Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kelen Freitas
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Jean-Sebastien Austin
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Feng Dai
- Departments of Anesthesiology and Human Genetics, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jie Zhang
- Genomic Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Jaclyn Marcovitz
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Alexander H Tuttle
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Peter M Slepian
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Sarah Clarke
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Ryan M Drenan
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
| | - Jeff Janes
- Genomic Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Shakir Al Sharari
- Department of Pharmacology, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Samantha K Segall
- Center for Neurosensory Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Eske K Aasvang
- Section for Surgical Pathophysiology, Rigshospitalet, Copenhagen University, 2100 Copenhagen, Denmark
| | - Weike Lai
- Departments of Anesthesiology and Human Genetics, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Reinhard Bittner
- Department of Surgery, Marienhospital Stuttgart, 70199 Stuttgart, Germany
| | | | - Gary D Slade
- Department of Dental Ecology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Henrik Kehlet
- Section for Surgical Pathophysiology, Rigshospitalet, Copenhagen University, 2100 Copenhagen, Denmark
| | - John Walker
- Genomic Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Uwe Maskos
- Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Département de Neuroscience, Institute Pasteur, 75724 Paris, France
| | - Jean-Pierre Changeux
- Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Département de Neuroscience, Institute Pasteur, 75724 Paris, France
| | - Marshall Devor
- Department of Cell and Developmental Biology, Institute of Life Sciences and Center for Research on Pain, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - William Maixner
- Center for Neurosensory Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Luda Diatchenko
- Center for Neurosensory Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. Faculty of Dentistry, Department of Anesthesia, and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1G1, Canada
| | - Inna Belfer
- Departments of Anesthesiology and Human Genetics, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Dennis A Dougherty
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Andrew I Su
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Sarah C R Lummis
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1QW, UK
| | - M Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Henry A Lester
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Ardem Patapoutian
- Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, and Howard Hughes Medical Institute, La Jolla, CA 92037, USA
| | - Jeffrey S Mogil
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 1B1, Canada.
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7
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Behavioral study of non-evoked orofacial pain following different types of infraorbital nerve injury in rats. Physiol Behav 2015; 138:292-6. [DOI: 10.1016/j.physbeh.2014.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 07/01/2014] [Accepted: 10/09/2014] [Indexed: 11/20/2022]
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8
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Al-Harrasi A, Ali L, Hussain J, Rehman NU, Mehjabeen, Ahmed M, Al-Rawahi A. Analgesic effects of crude extracts and fractions of Omani frankincense obtained from traditional medicinal plant Boswellia sacra on animal models. ASIAN PAC J TROP MED 2014; 7S1:S485-90. [DOI: 10.1016/s1995-7645(14)60279-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/17/2014] [Accepted: 05/12/2014] [Indexed: 11/24/2022] Open
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Coste O, Möser CV, Sisignano M, Kynast KL, Minden A, Geisslinger G, Niederberger E. The p21-activated kinase PAK 5 is involved in formalin-induced nociception through regulation of MAP-kinase signaling and formalin-specific receptors. Behav Brain Res 2012; 234:121-8. [PMID: 22732262 DOI: 10.1016/j.bbr.2012.06.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/11/2012] [Accepted: 06/15/2012] [Indexed: 10/28/2022]
Abstract
p21-activated kinases (PAKs) are involved in signal cascades relevant for nociceptive processing and neuropathic pain. Particularly, the recently described group B PAKs 4, 5 and 6 regulate MAP-kinases and the rearrangement of the actin cytoskeleton, both of which have been linked to pain processing. However, a specific role of these PAKs in nociception has not yet been demonstrated. We found PAK 4, 5 and 6 expression in pain-relevant tissues in peripheral and CNS. Since viable knock-out mice only exist for the PAK isoform 5, we further assessed the impact of this PAK on acute and chronic pain using different behavioral models in mice. PAK 5 knock-out mice showed normal acute nociception and did not differ from wild type mice in their neuropathic pain behavior. However, the nociceptive response in formalin-induced paw inflammation was significantly reduced in knock-out mice associated with inhibition of MAP-kinase activation and a decreased number of formalin-induced c-Fos positive neurons in the spinal cord. Furthermore, in isolated neurons, we found a significantly reduced calcium response after stimulation of TRPA1-channels in PAK 5(-/-)- compared to PAK 5(+/+)-cells. Our results indicate that PAK 5 is involved in formalin-induced inflammatory nociception through regulation of MAPK-induced c-Fos-activation and formalin-specific TRP-channels.
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Affiliation(s)
- Ovidiu Coste
- Pharmazentrum frankfurt/ZAFES, Klinikum der Johann Wolfgang Goethe-Universität, Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany.
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10
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Abstract
PURPOSE OF REVIEW The review examines the rationale and translational utility of computational genetic studies using murine models of biomedical traits. RECENT FINDINGS Computational genetic mapping studies have identified the genetic basis for biomedical trait differences in 16 different murine models, including several that are of importance to perioperative medicine. SUMMARY The results have generated new treatments for alleviating incisional pain and narcotic drug withdrawal symptoms, which are now in clinical trials. A recent study identified allelic differences affecting chronic pain responses in mice and humans, which may enable a new 'personalized' approach to treating chronic pain.
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11
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Acetic acid- and phenyl-p-benzoquinone-induced overt pain-like behavior depends on spinal activation of MAP kinases, PI3K and microglia in mice. Pharmacol Biochem Behav 2012; 101:320-8. [DOI: 10.1016/j.pbb.2012.01.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 11/30/2011] [Accepted: 01/22/2012] [Indexed: 11/17/2022]
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12
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Mogil JS. Pain genetics: past, present and future. Trends Genet 2012; 28:258-66. [PMID: 22464640 DOI: 10.1016/j.tig.2012.02.004] [Citation(s) in RCA: 222] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 02/16/2012] [Accepted: 02/22/2012] [Indexed: 01/01/2023]
Abstract
Chronic pain is a classic example of gene × environment interaction: inflammatory and/or nerve injuries are known or suspected to be the etiology of most chronic pain syndromes, but only a small minority of those subjected to such injuries actually develop chronic pain. Once chronic pain has developed, pain severity and analgesic response are also highly variable among individuals. Although animal genetics studies have been ongoing for over two decades, only recently have comprehensive human twin studies and large-scale association studies been performed. Here, I review recent and accelerating progress in, and continuing challenges to, the identification of genes contributing to such variability. Success in this endeavor will hopefully lead to both better management of pain using currently available therapies and the development and/or prioritizing of new ones.
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Affiliation(s)
- Jeffrey S Mogil
- Department of Psychology, McGill University, Montreal, QC, H3A 1B1, Canada.
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13
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Liu HH, Hu Y, Zheng M, Suhoski MM, Engleman EG, Dill DL, Hudnall M, Wang J, Spolski R, Leonard WJ, Peltz G. Cd14 SNPs regulate the innate immune response. Mol Immunol 2012; 51:112-27. [PMID: 22445606 DOI: 10.1016/j.molimm.2012.02.112] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 02/06/2012] [Indexed: 01/14/2023]
Abstract
CD14 is a monocytic differentiation antigen that regulates innate immune responses to pathogens. Here, we show that murine Cd14 SNPs regulate the length of Cd14 mRNA and CD14 protein translation efficiency, and consequently the basal level of soluble CD14 (sCD14) and type I IFN production by murine macrophages. This has substantial downstream consequences for the innate immune response; the level of expression of at least 40 IFN-responsive murine genes was altered by this mechanism. We also observed that there was substantial variation in the length of human CD14 mRNAs and in their translation efficiency. sCD14 increased cytokine production by human dendritic cells (DCs), and sCD14-primed DCs augmented human CD4T cell proliferation. These findings may provide a mechanism for exploring the complex relationship between CD14 SNPs, serum sCD14 levels, and susceptibility to human infectious and allergic diseases.
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Affiliation(s)
- Hong-Hsing Liu
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA 94305, USA
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14
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Zheng M, Dill D, Peltz G. A better prognosis for genetic association studies in mice. Trends Genet 2011; 28:62-9. [PMID: 22118772 DOI: 10.1016/j.tig.2011.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 10/24/2011] [Accepted: 10/27/2011] [Indexed: 11/28/2022]
Abstract
Although inbred mouse strains have been the premier model organism used in biomedical research, multiple studies and analyses have indicated that genome-wide association studies (GWAS) cannot be productively performed using inbred mouse strains. However, there is one type of GWAS in mice that has successfully identified the genetic basis for many biomedical traits of interest: haplotype-based computational genetic mapping (HBCGM). Here, we describe how the methodological basis for a HBCGM study significantly differs from that of a conventional murine GWAS, and how an integrative analysis of its output within the context of other 'omic' information can enable genetic discovery. Consideration of these factors will substantially improve the prognosis for the utility of murine genetic association studies for biomedical discovery.
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Affiliation(s)
- Ming Zheng
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA 94305, USA
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15
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Next-generation computational genetic analysis: multiple complement alleles control survival after Candida albicans infection. Infect Immun 2011; 79:4472-9. [PMID: 21875959 DOI: 10.1128/iai.05666-11] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Candida albicans is a fungal pathogen that causes severe disseminated infections that can be lethal in immunocompromised patients. Genetic factors are known to alter the initial susceptibility to and severity of C. albicans infection. We developed a next-generation computational genetic mapping program with advanced features to identify genetic factors affecting survival in a murine genetic model of hematogenous C. albicans infection. This computational tool was used to analyze the median survival data after inbred mouse strains were infected with C. albicans, which provides a useful experimental model for identification of host susceptibility factors. The computational analysis indicated that genetic variation within early classical complement pathway components (C1q, C1r, and C1s) could affect survival. Consistent with the computational results, serum C1 binding to this pathogen was strongly affected by C1rs alleles, as was survival of chromosome substitution strains. These results led to a combinatorial, conditional genetic model, involving an interaction between C5 and C1r/s alleles, which accurately predicted survival after infection. Beyond applicability to infectious disease, this information could increase our understanding of the genetic factors affecting susceptibility to autoimmune and neurodegenerative diseases.
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Hu Y, Liang D, Li X, Liu HH, Zhang X, Zheng M, Dill D, Shi X, Qiao Y, Yeomans D, Carvalho B, Angst MS, Clark JD, Peltz G. The Role of Interleukin-1 in Wound Biology. Part I. Anesth Analg 2010; 111:1525-33. [DOI: 10.1213/ane.0b013e3181f5ef5a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Abstract
A recent publication that combined rat gene expression data and a human genetic association study has identified the first genetic risk factor for chronic pain in humans. In four of the five cohorts studied, there was a significant association of an allele within a gene (KCNS1) encoding a potassium channel (Kv9.1) with an increased risk for chronic pain. Identification of genetic risk factors for chronic pain could catalyze new advances in this difficult clinical area that has become a major public health problem. Genomic-medicine-based advances for chronic pain could include the development of a mechanism-based classification system for chronic pain, new treatment options, improved methods for treatment selection and targeted prevention strategies for high-risk individuals.
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Affiliation(s)
- Ming Zheng
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA 94305, USA.
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Chang M, Smith S, Thorpe A, Barratt MJ, Karim F. Evaluation of phenoxybenzamine in the CFA model of pain following gene expression studies and connectivity mapping. Mol Pain 2010; 6:56. [PMID: 20846436 PMCID: PMC2949723 DOI: 10.1186/1744-8069-6-56] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 09/16/2010] [Indexed: 11/24/2022] Open
Abstract
Background We have previously used the rat 4 day Complete Freund's Adjuvant (CFA) model to screen compounds with potential to reduce osteoarthritic pain. The aim of this study was to identify genes altered in this model of osteoarthritic pain and use this information to infer analgesic potential of compounds based on their own gene expression profiles using the Connectivity Map approach. Results Using microarrays, we identified differentially expressed genes in L4 and L5 dorsal root ganglia (DRG) from rats that had received intraplantar CFA for 4 days compared to matched, untreated control animals. Analysis of these data indicated that the two groups were distinguishable by differences in genes important in immune responses, nerve growth and regeneration. This list of differentially expressed genes defined a "CFA signature". We used the Connectivity Map approach to identify pharmacologic agents in the Broad Institute Build02 database that had gene expression signatures that were inversely related ('negatively connected') with our CFA signature. To test the predictive nature of the Connectivity Map methodology, we tested phenoxybenzamine (an alpha adrenergic receptor antagonist) - one of the most negatively connected compounds identified in this database - for analgesic activity in the CFA model. Our results indicate that at 10 mg/kg, phenoxybenzamine demonstrated analgesia comparable to that of Naproxen in this model. Conclusion Evaluation of phenoxybenzamine-induced analgesia in the current study lends support to the utility of the Connectivity Map approach for identifying compounds with analgesic properties in the CFA model.
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Affiliation(s)
- Meiping Chang
- Indications Discovery Research Unit, Pfizer Global Research and Development, Chesterfield, MO 63017, USA
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