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Biocompatibility and Pharmacological Effects of Innovative Systems for Prolonged Drug Release Containing Dexketoprofen in Rats. Polymers (Basel) 2021; 13:polym13071010. [PMID: 33805954 PMCID: PMC8037047 DOI: 10.3390/polym13071010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 01/14/2023] Open
Abstract
The present study reports on the in vivo biocompatibility investigation and evaluation of the effects of liposomes containing dexketoprofen in somatic sensitivity in rats. Method: The liposomes were prepared by entrapping dexketoprofen in vesicular systems stabilized with chitosan. The in vivo biocompatibility was evaluated after oral administration in white Wistar rats: Group I (DW): distilled water 0.3 mL/100 g body weight; Group II (DEX): dexketoprofen 10 mg/kg body weight (kbw); Group III (nano-DEX): liposomes containing dexketoprofen 10 mg/kbw. Blood samples were collected from caudal lateral vein one day and seven days after the substance administration, to assess the eventual hematological, biochemical, and immunological changes. The investigation of somatic pain reactivity was performed using the hot plate test, to count the latency time response evoked by the thermal paws’ noxious stimulation. Results: Original liposomes entrapping dexketoprofen, with mean size of 680 nm and good stability, were designed. Laboratory analysis indicated no substantial variances between the three treated groups. The treatment with liposomes containing dexketoprofen resulted in a prolongation of the latency time response, statistically significant in the interval between 90 min and 10 h, in the hot plate test. Conclusions: The use of liposomes with dexketoprofen proved a good in vivo biocompatibility in rats and prolonged analgesic effects in the hot plate test.
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Iannotta M, Belardo C, Trotta MC, Iannotti FA, Vitale RM, Maisto R, Boccella S, Infantino R, Ricciardi F, Mirto BF, Ferraraccio F, Panarese I, Amodeo P, Tunisi L, Cristino L, D’Amico M, di Marzo V, Luongo L, Maione S, Guida F. N-palmitoyl-D-glucosamine, a Natural Monosaccharide-Based Glycolipid, Inhibits TLR4 and Prevents LPS-Induced Inflammation and Neuropathic Pain in Mice. Int J Mol Sci 2021; 22:ijms22031491. [PMID: 33540826 PMCID: PMC7867376 DOI: 10.3390/ijms22031491] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 12/22/2022] Open
Abstract
Toll-like receptors (TLRs) are key receptors through which infectious and non-infectious challenges act with consequent activation of the inflammatory cascade that plays a critical function in various acute and chronic diseases, behaving as amplification and chronicization factors of the inflammatory response. Previous studies have shown that synthetic analogues of lipid A based on glucosamine with few chains of unsaturated and saturated fatty acids, bind MD-2 and inhibit TLR4 receptors. These synthetic compounds showed antagonistic activity against TLR4 activation in vitro by LPS, but little or no activity in vivo. This study aimed to show the potential use of N-palmitoyl-D-glucosamine (PGA), a bacterial molecule with structural similarity to the lipid A component of LPS, which could be useful for preventing LPS-induced tissue damage or even peripheral neuropathies. Molecular docking and molecular dynamics simulations showed that PGA stably binds MD-2 with a MD-2/(PGA)3 stoichiometry. Treatment with PGA resulted in the following effects: (i) it prevented the NF-kB activation in LPS stimulated RAW264.7 cells; (ii) it decreased LPS-induced keratitis and corneal pro-inflammatory cytokines, whilst increasing anti-inflammatory cytokines; (iii) it normalized LPS-induced miR-20a-5p and miR-106a-5p upregulation and increased miR-27a-3p levels in the inflamed corneas; (iv) it decreased allodynia in peripheral neuropathy induced by oxaliplatin or formalin, but not following spared nerve injury of the sciatic nerve (SNI); (v) it prevented the formalin- or oxaliplatin-induced myelino-axonal degeneration of sciatic nerve. SIGNIFICANCE STATEMENT We report that PGA acts as a TLR4 antagonist and this may be the basis of its potent anti-inflammatory activity. Being unique because of its potency and stability, as compared to other similar congeners, PGA can represent a tool for the optimization of new TLR4 modulating drugs directed against the cytokine storm and the chronization of inflammation.
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Affiliation(s)
- Monica Iannotta
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Carmela Belardo
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Maria Consiglia Trotta
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Fabio Arturo Iannotti
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
| | - Rosa Maria Vitale
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
| | - Rosa Maisto
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Serena Boccella
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Rosmara Infantino
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Flavia Ricciardi
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Benito Fabio Mirto
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Franca Ferraraccio
- Pathology Unit, Department of Mental and Physical Health and Preventive Medicine, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (F.F.); (I.P.)
| | - Iacopo Panarese
- Pathology Unit, Department of Mental and Physical Health and Preventive Medicine, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (F.F.); (I.P.)
| | - Pietro Amodeo
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
| | - Lea Tunisi
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
| | - Luigia Cristino
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
| | - Michele D’Amico
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
| | - Vincenzo di Marzo
- Institute of Biomolecular Chemistry (ICB) of National Research Council (CNR), 80078 Pozzuoli, Italy; (F.A.I.); (R.M.V.); (P.A.); (L.T.); (L.C.); (V.d.M.)
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Faculty of Medicine and Faculty of Agriculture and Food Science, Universitè Laval, Quebec City, QC G1V 0A6, Canada
| | - Livio Luongo
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
- I.R.C.S.S., Neuromed, 86077 Pozzilli, Italy
| | - Sabatino Maione
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
- I.R.C.S.S., Neuromed, 86077 Pozzilli, Italy
- Correspondence: (S.M.); (F.G.); Tel.: +39-0815667658 (F.G.)
| | - Francesca Guida
- Department of Experimental Medicine, Pharmacology Division, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (M.I.); (C.B.); (M.C.T.); (R.M.); (S.B.); (R.I.); (F.R.); (B.F.M.); (M.D.); (L.L.)
- Correspondence: (S.M.); (F.G.); Tel.: +39-0815667658 (F.G.)
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Guarnieri M, Kedda J, Tyler B. Buprenorphine implants: a model for expedited development and approval of new drugs. Curr Med Res Opin 2021; 37:83-88. [PMID: 33089724 DOI: 10.1080/03007995.2020.1840971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Regulations for new drug approvals require stringent safety testing and efficacy trial programs. The approval process for generic drugs, however, is significantly streamlined. Bioavailability data can substitute for new rounds of efficacy trials, thereby both decreasing time to approval and reducing the costs required for new studies. This regulatory choice has not been available when generic drugs are offered in a controlled release format such as a subcutaneous depot, transdermal patch or implant. The purpose of this review is to suggest that the approval of generic drugs in inert controlled release envelopes should be eligible for similar regulatory relief. Proof for this concept is provided by the example of the numerous controlled release buprenorphine products. Buprenorphine is a generic opioid used since the 1980s in tablet form to treat pain and to treat opioid addiction. Long-acting, inert delivery vehicles for the drug have become available for the same indications. Safety and bioavailability profiles of the long-acting products are the same or improved over the parent product. A review of the long-acting drugs provides compelling evidence to recommend that generic drug-controlled release products may be eligible for alternative regulatory programs.
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Affiliation(s)
- Michael Guarnieri
- Department of Neurosurgery Hunterian Laboratories, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Jayanidhi Kedda
- Department of Neurosurgery Hunterian Laboratories, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Betty Tyler
- Department of Neurosurgery Hunterian Laboratories, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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Morphine-Conditioned Placebo Analgesia in Female and Male Rats with Chronic Neuropathic Pain: c-Fos Expression in the Rostral Ventromedial Medulla. Neuroscience 2020; 457:51-73. [PMID: 33285237 DOI: 10.1016/j.neuroscience.2020.11.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 12/17/2022]
Abstract
Placebo analgesia has great potential to overcome the inadequacies of current drug therapies to treat conditions of chronic pain. The rostral ventromedial medulla (RVM) has been implicated as a critical relay in the antinociceptive pathway underpinning placebo analgesia in humans. We developed a model of opiate-conditioned placebo analgesia in rats with neuropathic injury to identify medullary nuclei active during placebo analgesia. Using female and male rats the degree of thermal allodynia was first determined following nerve injury, and a pharmacological conditioning procedure, pairing contextual cues with the experience of morphine-induced analgesia, was used to elicit placebo analgesic reactions. This protocol revealed clear subpopulations of placebo reactors (36% of males, 25% of females) and non-reactors in proportions similar to those reported in human studies. We detected injury-specific c-Fos expression in the gracile nucleus and morphine-specific c-Fos expression in the serotonergic midline raphe nuclei and the caudal nuclei of the solitary tract. However, c-Fos expression did not differ between placebo reactors and non-reactors in either serotonergic or non-serotonergic neurons of the RVM. Despite a subpopulation of rats demonstrating placebo reactions, we found no evidence for enhanced activity in the nuclei from which the classical RVM → spinal cord descending analgesic pathways emerge.
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Akbari J, Saeedi M, Enayatifard R, Morteza-Semnani K, Hassan Hashemi SM, Babaei A, Rahimnia SM, Rostamkalaei SS, Nokhodchi A. Curcumin Niosomes (curcusomes) as an alternative to conventional vehicles: A potential for efficient dermal delivery. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.102035] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Leiguarda C, Potilinski C, Rubione J, Tate P, Villar MJ, Montaner A, Bisagno V, Constandil L, Brumovsky PR. IMT504 Provides Analgesia by Modulating Cell Infiltrate and Inflammatory Milieu in a Chronic Pain Model. J Neuroimmune Pharmacol 2020; 16:651-666. [PMID: 33221983 DOI: 10.1007/s11481-020-09971-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/11/2020] [Indexed: 12/20/2022]
Abstract
IMT504 is a non-CPG, non-coding synthetic oligodeoxinucleotide (ODN) with immunomodulatory properties and a novel inhibitory role in pain transmission, exerting long-lasting analgesic effects upon multiple systemic administrations. However, its mechanisms of anti-nociceptive action are still poorly understood. In the present study in male adult rats undergoing complete Freund's adjuvant-induced hindpaw inflammation, we focused in the analysis of the immunomodulatory role of IMT504 over the cellular infiltrate, the impact on the inflammatory milieu, and the correlation with its anti-allodynic role. By means of behavioral analysis, we determined that a single subcutaneous administration of 6 mg/kg of IMT504 is sufficient to exert a 6-week-long full reversal of mechanical and cold allodynia, compromising neither acute pain perception nor locomotor activity. Importantly, we found that the anti-nociceptive effects of systemic IMT504, plus quick reductions in hindpaw edema, were associated with a modulatory action upon cellular infiltrate of B-cells, macrophages and CD8+ T-cells populations. Accordingly, we observed a profound downregulation of several inflammatory leukocyte adhesion proteins, chemokines and cytokines, as well as of β-endorphin and an increase in the anti-inflammatory cytokine, interleukin-10. Altogether, we demonstrate that at least part of the anti-nociceptive actions of IMT504 relate to the modulation of the peripheral immune system at the site of injury, favoring a switch from pro- to anti-inflammatory conditions, and provide further support to its use against chronic inflammatory pain. Graphical abstract GA short description - IMT504 systemic Administration. Systemic administration of the non-CpG ODN IMT504 results in a 6-week long blockade of pain-like behavior in association with anti-inflammatory responses at the site of injury. These include modulation of lymphoid and myeloid populations plus downregulated expression levels of multiple pro-inflammatory cytokines and β-endorphin. Nocifensive responses and locomotion remain unaltered.
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Affiliation(s)
- Candelaria Leiguarda
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina
| | - Constanza Potilinski
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina
| | - Julia Rubione
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina
| | - Pablo Tate
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina
| | - Marcelo J Villar
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina
| | - Alejandro Montaner
- Instituto de Ciencia y Tecnología "Dr. César Milstein", CONICET-Fundación Pablo Cassará, Buenos Aires, Argentina
| | - Verónica Bisagno
- Instituto de Investigaciones Farmacológicas, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Luis Constandil
- Laboratorio de Neurobiología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Pablo R Brumovsky
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Av. Juan D. Perón 1500 B1629AHJ, Pilar, Buenos Aires, Argentina.
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Eghianruwa Q, Osoniyi O, Maina N, Wachira S, Imbuga M. Evaluation of Analgesic Activities of Extracts of Two Marine Molluscs: Tympanotonus fuscatus var radula (Linnaeus) and Pachymelania aurita (Müller). J Pain Res 2020; 13:2739-2747. [PMID: 33154664 PMCID: PMC7608598 DOI: 10.2147/jpr.s271458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/03/2020] [Indexed: 02/06/2023] Open
Abstract
PURPOSE AND METHODS In this study, the analgesic activity of the crude alcohol (acetone-methanol) and aqueous (in PBS, pH 7.2) extracts of the marine molluscs, Pachymelania aurita and Tympanotonus fuscatus, has been evaluated using the formalin test (for chronic antinociceptive) and the tail-flick (acute antinociceptive) pain models in male swiss albino mice. RESULTS The results show that the extracts of P. aurita and T. fuscatus demonstrated high safety margins as single doses of up to 2000 mg/kg bwt proved to be well tolerated and non-lethal, although the alcohol extract of P. aurita caused necrosis in the liver and kidney when administered at a dose level of 2000 mg/kg bwt. In the formalin test, treatment with the aqueous extracts of P. aurita and T. fuscatus as well as the alcohol extract of T. fuscatus 30 min before the subcutaneous injection of 5% formalin to the paw of the mice resulted in a significant time- and dose-dependent reduction in total and phase 2a pain-related behavior and thus nociception. The extracts had no analgesic effect in tail-flick test up to the highest dose tested. CONCLUSION Hence, the results from both models indicate that the site of their analgesic action is probably peripheral.
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Affiliation(s)
- Queensley Eghianruwa
- Department of Molecular Biology and Biotechnology, Pan African University Institute of Science, Technology and Innovation, JKUAT campus, Juja, Kenya
- Department of Biochemistry, University of Uyo, Uyo, Nigeria
| | - Omolaja Osoniyi
- Department of Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile Ife, Nigeria
| | - Naomi Maina
- Department of Molecular Biology and Biotechnology, Pan African University Institute of Science, Technology and Innovation, JKUAT campus, Juja, Kenya
- Biochemistry Department, Jomo Kenyatta University of Agriculture and Technology, Juja, Kenya
| | - Sabina Wachira
- Centre for Traditional Medicine and Drug Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Mabel Imbuga
- Biochemistry Department, Jomo Kenyatta University of Agriculture and Technology, Juja, Kenya
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Ahmadimoghaddam D, Sadeghian R, Ranjbar A, Izadidastenaei Z, Mohammadi S. Antinociceptive activity of Cnicus benedictus L. leaf extract: a mechanistic evaluation. Res Pharm Sci 2020; 15:463-472. [PMID: 33628288 PMCID: PMC7879793 DOI: 10.4103/1735-5362.297849] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 05/04/2020] [Accepted: 09/27/2020] [Indexed: 12/17/2022] Open
Abstract
Background and purpose: Cnicus benedictus, a medicinal herb, traditionally had been used for the treatment of stomachache pain. In this study, the possible efficacy of Cnicus benedictus leaf methanolic extract (CBHE) and also cnicin, one of its major constituents, was measured on pain. Experimental approach: In this study, pain assessment tests include writhing, tail-flick (TF), and formalin- induced paw licking test (FIPLT) were used. To understand the possible mediated anti-nociceptive mechanism of CBHE, the opioid mechanism(s), and involvement of the L-arginine/ nitric oxide/cGMP/ATP-sensitive potassium channel pathway (LNCaP) were scrutinized. Findings/Results: In TF and writhing tests, CBHE (150 and 300 mg/kg, i.p) remarkably exhibited an anti-nociceptive effect compared to that of the control. Furthermore, CBHE (150 and 300 mg/kg, i.p) in comparison with the control showed a noteworthy anti-nociceptive effect (P < 0.01) in the tonic phase of FIPLT. In the writhing test, administration of selective opioid antagonist (naltrindole, nor-binaltorphimine, and naloxonazine) attenuated the anti-nociceptive effect of CBHE (300 mg/kg) in comparison with control. Moreover, pre-treatment with Nω-nitro-L-arginine methyl ester hydrochloride, L-arginine hydrochloride, and glibenclamide significantly blocked the CBHE (300 mg/kg) anti-nociception (P < 0.05) while administration of sodium nitroprusside remarkably potentiated (P < 0.05) the antinociception induced by CBHE in the tonic phase of the FIPLT. Besides, cnicin (30 mg/kg) showed noteworthy anti-nociceptive effects in writhing, TF, and FIPLT paradigms. Conclusion and implications: Taken together, we elucidate that both CBHE and cnicin demonstrated antinociceptive effects in behavioral tests. The possible mechanisms of CBHE antinociception may involve in various neural signaling and modulatory pathways including LNCaP and opioidergic mechanisms.
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Affiliation(s)
- Davoud Ahmadimoghaddam
- Department of Pharmacology and Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, I.R. Iran.,Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, I.R. Iran
| | - Reihaneh Sadeghian
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, I.R. Iran.,Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, I.R. Iran
| | - Akram Ranjbar
- Department of Pharmacology and Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, I.R. Iran.,Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, I.R. Iran
| | - Zohreh Izadidastenaei
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, I.R. Iran
| | - Saeed Mohammadi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, I.R. Iran.,Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, I.R. Iran
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Islam A, Rahman MA, Brenner MB, Moore A, Kellmyer A, Buechler HM, DiGiorgio F, Verchio VR, McCracken L, Sumi M, Hartley R, Lizza JR, Moura-Letts G, Fischer BD, Keck TM. Abuse Liability, Anti-Nociceptive, and Discriminative Stimulus Properties of IBNtxA. ACS Pharmacol Transl Sci 2020; 3:907-920. [DOI: 10.1021/acsptsci.0c00066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Bradford D. Fischer
- Cooper Medical School of Rowan University, 401 Broadway, Camden, New Jersey 08103, United States
| | - Thomas M. Keck
- Cooper Medical School of Rowan University, 401 Broadway, Camden, New Jersey 08103, United States
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Withametelin: a biologically active withanolide in cancer, inflammation, pain and depression. Saudi Pharm J 2020; 28:1526-1537. [PMID: 33424246 PMCID: PMC7783102 DOI: 10.1016/j.jsps.2020.09.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/28/2020] [Indexed: 11/30/2022] Open
Abstract
Withanolides are natural medicinal agents whose safety and therapeutic profiles make them valuable to mankind. Among multiple withanolides, withametelin is underexplored. The present study was aimed to create a general biological profile of isolated withametelin from Datura innoxia Mill. targeting different biological models. In-silico studies include drug-likeliness, pharmacokinetics, toxicity, molecular targets and cytotoxicity to cancer cell lines predictions. In silico directed preliminary in-vitro evaluation comprised of cancer/normal cell cytotoxicity, DPPH and protein kinase inhibition assays while in-vivo bioactivities include antiinflammatory, analgesic, antidepressant and anticoagulant assays. Pharmacological findings were strengthened by molecular docking studies to check interactions with various proteins and to propose the future path of studies. Results indicated compliance with Lipinski drug-likeliness rule (score −0.55). ADMET prediction showed strong plasma protein binding, GI absorption (Caco-2 cells permeability = 46.74 nm/s), blood brain barrier penetration (Cbrain/Cblood = 0.31), efflux by P-glycoprotein, metabolism by CYP1A2, CYP2C19 and CYP3A4, medium hERG inhibition and non-carcinogenicity in rodents. Predicted molecular targets included mainly receptors (glucocorticoid, kappa opioid, delta opioid, adrenergic and dopamine), oxidoreductase (arachidonate 5-lipoxygenase and cyclooxygenase-2), enzymes (HMG-CoA reductase) and kinase (NFκb). Withametelin was more cytotoxic to cancer cells (DU145 IC50 7.67 ± 0.54 µM) than normal lymphocytes (IC50 33.55 ± 1.31 µM). It also showed good antioxidant and protein kinase inhibition potentials. Furthermore, withametelin (20 mg/kg) significantly reduced inflammatory paw edema (68.94 ± 5.55%), heat-induced pain (78.94 ± 6.87%) and immobility time (50%) in animals. Molecular docking showed hydrogen bonding interactions (binding energies: −11.3 to −7.8 kcal/mol) with arachidonate 5 lipoxygenase, NFκb and glucocorticoid receptor. Withametelin has potential for advance investigations for its cytotoxic, anti-inflammatory, analgesic and antidepressant activities.
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Liu Q, Su LY, Sun C, Jiao L, Miao Y, Xu M, Luo R, Zuo X, Zhou R, Zheng P, Xiong W, Xue T, Yao YG. Melatonin alleviates morphine analgesic tolerance in mice by decreasing NLRP3 inflammasome activation. Redox Biol 2020; 34:101560. [PMID: 32413745 PMCID: PMC7225735 DOI: 10.1016/j.redox.2020.101560] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 01/03/2023] Open
Abstract
Morphine is frequently used for pain relief, but long-term morphine therapy in patients with chronic pain results in analgesic tolerance and hyperalgesia. There are no effective therapeutic treatments that limit these detrimental side effects. We found pretreatment with melatonin could decrease morphine-induced analgesic tolerance. There was a significant activation of the NLRP3 inflammasome in the prefrontal cortex and the peripheral blood of morphine-treated mice compared to control animals, which could be blocked by melatonin. The inflammasome activation induced by morphine was mediated by the microglia. SiRNA knockdown or pharmacological inhibition of the NLRP3 abolished the morphine-induced inflammasome activation. Co-administration of melatonin and low-dose morphine had better analgesia effects in the murine models of pain and led to a lower NLRP3 inflammasome activity in brain tissues. Mice deficient for Nlrp3 had a higher nociceptive threshold and were less sensitive to develop morphine-induced analgesic tolerance and acetic acid-induced pain relative to wild-type animals. Concordantly, we observed a significantly elevated level of serum IL-1β, which indicates an increase of NLRP3 inflammasome activity associated with the reduced level of serum melatonin, in heroin-addicted patients relative to healthy individuals. Our results provide a solid basis for conducting a clinical trial with the co-administration of melatonin and morphine for the relief of severe pain.
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Affiliation(s)
- Qianjin Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Ling-Yan Su
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China.
| | - Chunli Sun
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China; State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Lijin Jiao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Ying Miao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China; Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Min Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Rongcan Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China
| | - Xin Zuo
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Rongbin Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ping Zheng
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China; State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China
| | - Wei Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230026, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Tian Xue
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230026, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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Preventive hypothermia as a neuroprotective strategy for paclitaxel-induced peripheral neuropathy. Pain 2020; 160:1505-1521. [PMID: 30839425 DOI: 10.1097/j.pain.0000000000001547] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is a severe adverse effect that occurs secondary to anticancer treatments and has no known preventive or therapeutic strategy. Therapeutic hypothermia has been shown to be effective in protecting against central and peripheral nervous system injuries. However, the effects of therapeutic hypothermia on CIPN have rarely been explored. We induced lower back hypothermia (LBH) in an established paclitaxel-induced CIPN rat model and found that the paclitaxel-induced impairments observed in behavioral, electrophysiological, and histological impairments were inhibited by LBH when applied at an optimal setting of 24°C to the sciatic nerve and initiated 90 minutes before paclitaxel infusion. Lower back hypothermia also inhibited the paclitaxel-induced activation of astroglia and microglia in the spinal cord and macrophage infiltration into and neuronal injury in the dorsal root ganglia and sciatic nerves. Furthermore, LBH decreased the local blood flow and local tissue concentrations of paclitaxel. Finally, in NOD/SCID mice inoculated with cancer cells, the antiproliferative effect of paclitaxel was not affected by the distal application of LBH. In conclusion, our findings indicate that early exposure to regional hypothermia alleviates paclitaxel-induced peripheral neuropathy. Therapeutic hypothermia may therefore represent an economical and nonpharmaceutical preventive strategy for CIPN in patients with localized solid tumors.
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Bumgarner JR, Walker WH, Liu JA, Walton JC, Nelson RJ. Dim Light at Night Exposure Induces Cold Hyperalgesia and Mechanical Allodynia in Male Mice. Neuroscience 2020; 434:111-119. [PMID: 32201267 PMCID: PMC7176554 DOI: 10.1016/j.neuroscience.2020.03.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 01/13/2023]
Abstract
The growing presence of artificial lighting across the globe presents a number of challenges to human and ecological health despite its societal benefits. Exposure to artificial light at night, a seemingly innocuous aspect of modern life, disrupts behavior and physiological functions. Specifically, light at night induces neuroinflammation, which is implicated in neuropathic and nociceptive pain states, including hyperalgesia and allodynia. Because of its influence on neuroinflammation, we investigated the effects of dim light at night exposure on pain responsiveness in male mice. In this study, mice exposed to four days of dim (5 lux) light at night exhibited cold hyperalgesia. Further, after 28 days of exposure, mice exhibited both cold hyperalgesia and mechanical allodynia. No heat/hot hyperalgesia was observed in this experiment. Altered nociception in mice exposed to dim light at night was concurrent with upregulated interleukin-6 and nerve growth factor mRNA expression in the medulla and elevated μ-opioid receptor mRNA expression in the periaqueductal gray region of the brain. The current results support the relationship between disrupted circadian rhythms and altered pain sensitivity. In summary, we observed that dim light at night induces cold hyperalgesia and mechanical allodynia, potentially through elevated neuroinflammation and dysregulation of the endogenous opioid system.
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Affiliation(s)
- Jacob R Bumgarner
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA.
| | - William H Walker
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - Jennifer A Liu
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - James C Walton
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
| | - Randy J Nelson
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26506, USA
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Role of hippocampal dopamine receptors in the antinociceptive responses induced by chemical stimulation of the lateral hypothalamus in animal model of acute pain. Brain Res 2020; 1734:146759. [DOI: 10.1016/j.brainres.2020.146759] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 01/30/2020] [Accepted: 02/29/2020] [Indexed: 01/07/2023]
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Mazeto TK, Picada JN, Correa ÁP, Rebelo IN, Ribeiro MT, Gomez MV, de Souza AH. Antinociceptive and genotoxic assessments of the antagonist TRPV1 receptor SB-366791 on morphine-induced tolerance in mice. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2020; 393:481-490. [PMID: 31655852 DOI: 10.1007/s00210-019-01748-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 10/09/2019] [Indexed: 12/17/2022]
Abstract
Chronic pain is mainly treated with opioid analgesics such as morphine. However, the use of these substances can cause adverse effects, including dependence and tolerance, necessitating the discovery of a new approach to analgesic therapies. The transient receptor potential vanilloid 1 (TRPV1) is linked to thermal sensibility and has been considered as a new therapeutic option for pain treatment. This study aims to investigate the antinociceptive effect and toxicity of SB-366791, a TRPV1 antagonist. Morphine-tolerant and morphine non-tolerant Swiss mice were submitted to the hot plate and thermal tail flick tests. Toxicological evaluations of the genotoxic and mutagenic activities of SB-366791 were assessed using a comet assay and micronucleus test, and the Salmonella/microsome mutagenicity assay. In the hot plate test, intrathecal injection of SB-366791 or morphine resulted in significantly increased antinociception in non-tolerant mice. SB-366791 also led to an analgesic effect in the tail flick test. Tolerant mice that received SB-366791 demonstrated a central antinociceptive effect in both thermal tests. No genotoxic effects were observed in the comet assay and no mutagenic effects were detected in the micronucleus test or in the Salmonella/microsome assay. Behavioral results of the thermal nociception tests show that SB-366791 has antinociceptive potential in both morphine-tolerant and non-tolerant mice and does not cause genotoxic or mutagenic effects. Nevertheless, new studies should be performed to clarify the activity and participation of vanilloid channels in the antinociception of SB-366791.
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Affiliation(s)
- Thiago Kastell Mazeto
- Graduate Program in Cellular and Molecular Biology Applied to Health Sciences, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
| | - Jaqueline Nascimento Picada
- Graduate Program in Cellular and Molecular Biology Applied to Health Sciences, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil.
- Graduate Program in Genetics and Applied Toxicology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil.
| | - Áurea Pandolfo Correa
- Department of Pharmacology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
| | - Isadora Nunes Rebelo
- Department of Pharmacology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
| | - Magali Terra Ribeiro
- Graduate Program in Genetics and Applied Toxicology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
| | - Marcus Vinícius Gomez
- Department of Neurotransmitters, Institute for Education and Research, Hospital Santa Casa, Domingos Vieira Street, 590, Belo Horizonte, MG, CEP 30150-240, Brazil
| | - Alessandra Hubner de Souza
- Graduate Program in Cellular and Molecular Biology Applied to Health Sciences, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
- Graduate Program in Genetics and Applied Toxicology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
- Department of Pharmacology, Lutheran University of Brazil (ULBRA), Farroupilha Avenue, 8001, Canoas, RS, CEP 92425-900, Brazil
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Challis C, Hori A, Sampson TR, Yoo BB, Challis RC, Hamilton AM, Mazmanian SK, Volpicelli-Daley LA, Gradinaru V. Gut-seeded α-synuclein fibrils promote gut dysfunction and brain pathology specifically in aged mice. Nat Neurosci 2020; 23:327-336. [PMID: 32066981 PMCID: PMC7065967 DOI: 10.1038/s41593-020-0589-7] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 01/09/2020] [Indexed: 01/02/2023]
Abstract
Parkinson's disease is a synucleinopathy that is characterized by motor dysfunction, death of midbrain dopaminergic neurons and accumulation of α-synuclein (α-Syn) aggregates. Evidence suggests that α-Syn aggregation can originate in peripheral tissues and progress to the brain via autonomic fibers. We tested this by inoculating the duodenal wall of mice with α-Syn preformed fibrils. Following inoculation, we observed gastrointestinal deficits and physiological changes to the enteric nervous system. Using the AAV-PHP.S capsid to target the lysosomal enzyme glucocerebrosidase for peripheral gene transfer, we found that α-Syn pathology is reduced due to the increased expression of this protein. Lastly, inoculation of α-Syn fibrils in aged mice, but not younger mice, resulted in progression of α-Syn histopathology to the midbrain and subsequent motor defects. Our results characterize peripheral synucleinopathy in prodromal Parkinson's disease and explore cellular mechanisms for the gut-to-brain progression of α-Syn pathology.
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Affiliation(s)
- Collin Challis
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Acacia Hori
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Timothy R Sampson
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Department of Physiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Bryan B Yoo
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Rosemary C Challis
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Adam M Hamilton
- Department of Physiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Sarkis K Mazmanian
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Laura A Volpicelli-Daley
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Viviana Gradinaru
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
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Zhou J, Qi F, Hu Z, Zhang L, Li Z, Wang ZJ, Tang H, Chen Z. Dezocine attenuates the remifentanil-induced postoperative hyperalgesia by inhibition of phosphorylation of CaMKⅡα. Eur J Pharmacol 2020; 869:172882. [PMID: 31863769 DOI: 10.1016/j.ejphar.2019.172882] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 01/22/2023]
Abstract
Remifentanil, ultra-short-acting μ-opioid receptor agonist, has the greatest advantage in analgesia but could increase postoperative pain scores and induces postoperative hyperalgesia. Dezocine is a mixed opioid receptor partial agonist/antagonist and has been used for postoperative hyperalgesia management in clinical patients,but the potential molecular mechanism is still unclear. Ca2+/calmodulin-dependent protein kinase Ⅱ(CaMKⅡ) has been reported involved in remifentanil-induced hyperalgesia (RIH) in previous studies, but the relationship between CaMKⅡ and dezocine in RIH is still unclear. To investigate the mechanism of dezocine in RIH, we used a remifentanil induced postoperative hyperalgesia (RIPH) in incisional pain model of mouse. We subcutaneously infused remifentanil (40 μg/kg) to induce postoperative hyperalgesia. Dezocine (1.5 mg/kg, 3.0 mg/kg, and 6.0 mg/kg) was infused subcutaneously with remifentanil using the apparatus pump for 30 min. Paw withdrawal thermal latency (PWTL) and paw withdrawal mechanical threshold (PWMT) were used to assess thermal hyperalgesia and mechanical allodynia. Western blotting analysis and immunohistochemistry analysis were used to assess the expression of phosphorylated CaMKⅡα (p-CaMKⅡα) in somatosensory cortex, hippocampus and spinal cord. Subcutaneous infusion of remifentanil enhanced postoperative pain induced by surgical incision and increased PWTL and PWMT. Dezocine dose-dependently decreased the PWTL and PWMT in RIPH model. Correlating with behavioral effects, dezocine inhibited remifentanil-induced up-regulation of p-CaMKⅡα expression in somatosensory cortex, hippocampus and spinal cord. Dezocine could attenuate RIPH by suppressing p-CaMKⅡα.
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Affiliation(s)
- Jie Zhou
- Department of Anesthesiology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, 310012, China; Department of Anesthesiology, Affiliated Hospital of Guilin Medical University, Gulin, Guangxi, 541004, China
| | - Fang Qi
- Department of Anesthesiology, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Jingzhou, Hubei, 434020, China; Department of Anesthesiology, Affiliated Hospital of Guilin Medical University, Gulin, Guangxi, 541004, China
| | - Zhengqiang Hu
- Department of Pharmacology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lejun Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Zigang Li
- Department of Anesthesiology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310006, China
| | - Zaijie Jim Wang
- Department of Biopharmaceutical Sciences, University of Illinois, Chicago, IL, 60607, USA
| | - Huifang Tang
- Department of Pharmacology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
| | - Zhijun Chen
- Department of Anesthesiology, Wuhan NO. 1 Hospital, Wuhan, Hubei, 430022, China; Department of Anesthesiology, Affiliated Hospital of Guilin Medical University, Gulin, Guangxi, 541004, China.
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Huang H, Wang W, Xu X, Zhu C, Wang Y, Liu J, Li W, Fu W. Discovery of 3-((dimethylamino)methyl)-4-hydroxy-4-(3-methoxyphenyl)-N-phenylpiperidine-1-carboxamide as novel potent analgesic. Eur J Med Chem 2020; 189:112070. [PMID: 31982651 DOI: 10.1016/j.ejmech.2020.112070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/12/2020] [Accepted: 01/13/2020] [Indexed: 12/20/2022]
Abstract
Management of moderate to severe pain by clinically used opioid analgesics is associated with a plethora of side effects. Despite many efforts have been dedicated to reduce undesirable side effects, moderate progress has been made. In this work, starting from Tramadol, a series of 3-((dimethylamino)methyl)-4-hydroxy-4-(3-methoxyphenyl)piperidine-1-carboxamide derivatives were designed and synthesized, and their in vitro and in vivo activities were evaluated. Our campaign afforded selective μ opioid receptor (MOR) ligand 2a (KiMOR: 7.3 ± 0.5 nM; KiDOR: 849.4 ± 96.6 nM; KiKOR: 49.1 ± 6.9 nM) as potent analgesic with ED50 of 3.1 mg/kg in 55 °C hot plate model. Its antinociception effect was blocked by opioid antagonist naloxone. High binding affinity toward MOR of compound 2a was associated with water bridge, salt bridge, hydrogen bond and hydrophobic interaction with MOR. The high selectivity of compound 2a for MOR over δ opioid receptor (DOR) and κ opioid receptor (KOR) was due to steric hindrance of compound 2a with DOR and KOR. 2a, a compound with novel scaffold, could serve as a lead for the development of novel opioid ligands.
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Affiliation(s)
- Huoming Huang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Wenli Wang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Xuejun Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, China
| | - Chen Zhu
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yujun Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, China
| | - Jinggen Liu
- Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, China
| | - Wei Li
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Wei Fu
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China.
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Zheng P, Jia S, Guo D, Chen S, Zhang W, Cheng A, Xie W, Sun G, Leng J, Lang J. Central Sensitization-Related Changes in Brain Function Activity in a Rat Endometriosis-Associated Pain Model. J Pain Res 2020; 13:95-107. [PMID: 32021399 PMCID: PMC6968808 DOI: 10.2147/jpr.s232313] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/17/2019] [Indexed: 12/31/2022] Open
Abstract
Background Pain sensitization processing in the central nervous system may be related to endometriosis-associated pain in patients. The purpose of this study was to understand the alterations in the abnormal pain response in central brain areas and explore the central sensitization mechanism of endometriosis-associated pain. Methods An endometriosis model was established in 40 Sprague-Dawley rats, and the rats underwent pain model assessment through behavioral tests. Twenty Sprague-Dawley rats underwent a sham operation as the control group. Thirteen pain rats and 8 control rats received Rs-fMRI examination to explore the brain functional activity areas, and the regional homogeneity (ReHo) method was used to analyze relevant functional signals among the whole brain. The states of neurons and expression of TRPV1 and NMDRA located in the abnormal ReHo signal brain regions were observed using Nissl staining, qRT-PCR and immunohistochemistry. Results The rats were divided into a pain group and a control group based on the different syndromes and behavioral assessments. We detected significant enhancement of ReHo signals in the anterior cingulate cortex, hippocampus, and thalamus and a reduction in the ReHo values in the basomedial amygdaloid nucleus (BM) and primary motor cortex (M1) in the pain rat group via Rs-fMRI examination. The number of Nissl bodies and apoptotic neurons was increased; moreover, the volume of neurons increased compensatorily in the cingulate cortex, thalamus and hippocampus in the pain group. TRPV1 and NMDRA were overexpressed in apoptotic neurons in the higher ReHo value brain regions in the endometriosis pain group. Conclusion These findings suggest that in rats with endometriosis-associated pain, ReHo signal enhancement was observed in the cingulate cortex, thalamus and hippocampus, which may be due to the increase in the number of apoptotic neurons or the compensatory increase in the volume of overactive neurons.
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Affiliation(s)
- Ping Zheng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Shuangzheng Jia
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Dalong Guo
- Air Force Medical Center, PLA, Beijing, People's Republic of China
| | - Sikai Chen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Wen Zhang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Aoshuang Cheng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Weijie Xie
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, People's Republic of China
| | - Guibo Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, People's Republic of China
| | - Jinhua Leng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Jinghe Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
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Marquis JM, Lettenberger SE, Kelm-Nelson CA. Early-onset Parkinsonian behaviors in female Pink1-/- rats. Behav Brain Res 2020; 377:112175. [PMID: 31542395 PMCID: PMC6824965 DOI: 10.1016/j.bbr.2019.112175] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/01/2019] [Accepted: 08/22/2019] [Indexed: 12/26/2022]
Abstract
Parkinson disease (PD) is a progressive, neurological disease that affects millions of individuals worldwide. Although instability, rigidity, tremor, and bradykinesia are considered hallmark motor signs of the disease, these are not apparent until mid-to-late stage. In addition to limb motor impairment, individuals with PD also exhibit early-onset speech dysfunction and reduced vocal intelligibility as well as anhedonia and anxiety. Many of these clinical signs vary according to sex in humans with PD. In this study, a translational genetic rat model of early-onset PD (Pink1-/-) was used to address significant gaps in knowledge concerning sex-specific characteristics of limb sensorimotor deficits, vocal motor dysfunction, and changes in affective state. Traditional behavioral tests of limb function, ultrasonic vocalization, anxiety, and anhedonia in the Pink1-/- female rat and wildtype controls were used to test the hypothesis that behavioral performance would significantly differ between genotypes, and that these differences would increase with disease progression (age of the rat). Results demonstrate that Pink1-/- female rats do not exhibit limb sensorimotor deficits but do have significantly reduced intensity (loudness) of vocalizations, and present with anhedonia and anxiety by 8 months of age. Consistent with an early-disease model, Pink1-/- female rats do not exhibit significant decreases in nigrostriatal catecholamines/metabolites, as measured by HPLC. These results are significant in expanding knowledge of early-onset deficits in the female Pink1-/- genetic rat model of PD.
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Affiliation(s)
- Julia M Marquis
- Department of Surgery, Division of Otolaryngology, University of Wisconsin-Madison, Madison, WI, USA; Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI, USA.
| | - Samantha E Lettenberger
- Department of Surgery, Division of Otolaryngology, University of Wisconsin-Madison, Madison, WI, USA; Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI, USA.
| | - Cynthia A Kelm-Nelson
- Department of Surgery, Division of Otolaryngology, University of Wisconsin-Madison, Madison, WI, USA.
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El-Baz FK, Salama A, Salama RAA. Dunaliella salina Attenuates Diabetic Neuropathy Induced by STZ in Rats: Involvement of Thioredoxin. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1295492. [PMID: 31998774 PMCID: PMC6970482 DOI: 10.1155/2020/1295492] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/10/2019] [Indexed: 01/02/2023]
Abstract
Diabetic neuropathy (DN) is a widespread disabling disorder including peripheral nerves' damage. The aim of the current study was to estimate the potential ameliorative effect of Dunaliella salina (D. salina) on DN and the involvement of the thioredoxin. Diabetes was induced by streptozotocin (STZ; 50 mg/kg; i.p). Glimepiride (0.5 mg/kg) or D. salina powder (100 or 200 mg/kg) were given orally, after 2 days of STZ injection for 4 weeks. Glucose, total antioxidant capacity (TAC), superoxide dismutase (SOD), and catalase (CAT) serum levels as well as brain contents of thioredoxin (Trx), tumor necrosis factor-alpha (TNF-α), and interleukin-6 (IL-6) were measured with the histopathological study. STZ-induced DN resulted in a significant (P < 0.05) rise in glucose blood level and brain contents of TNF-α and IL-6 and produced a reduction in serum TAC, SOD, CAT, and brain Trx levels with irregular islets of Langerhans cells and loss of brain Purkinje cells. Treatment with glimepiride or both doses of D. salina alleviated these biochemical and histological parameters as compared to the STZ group. D. salina has a neurotherapeutic effect against DN via its inhibitory effect on inflammatory mediators and oxidative stress molecules with its upregulation of Trx activity.
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Affiliation(s)
- Farouk K. El-Baz
- Plant Biochemistry Department, National Research Centre (NRC), 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Giza, Egypt
| | - Abeer Salama
- Pharmacology Department, National Research Centre (NRC), 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Giza, Egypt
| | - Rania A. A. Salama
- Toxicology and Narcotics Department, National Research Centre (NRC), 33 El Bohouth St. (Former El-Tahrir St.), 12622 Dokki, Giza, Egypt
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Zheng P, Mei J, Leng J, Jia S, Gu Z, Chen S, Zhang W, Cheng A, Guo D, Lang J. Evaluation of the brain functional activities in rats various location-endometriosis pain model. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:767. [PMID: 32042783 DOI: 10.21037/atm.2019.11.73] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Endometriosis (EM) is a common gynecological disease in women of reproductive age. These patients in approximately 80% suffer the various degree pain. This study will investigate synergistically the mechanism of the higher-position central sensitization and offer a pre-clinical experiment evidence for treatment of various location-EM patients with pain. Methods Twenty Sprague-Dawley rats were induced three types EM including abdominal EM (n=5), gastrocnemius EM (n=5) and ovary EM group (n=5) and one sham control group (n=5). All groups were measured the pain sensitization by hotplate test, then scanned by the functional magnetic resonance imaging (fMRI). The resting-state fMRI (rs-fMRI) date was analyzed using regional homogeneity (ReHo) approach to find out the abnormal functional activity brain regions. Nissl staining method observed the state of neurons in aberrant ReHo signal brain regions. Results Rats with EM pain sensitization were increased in abdominal EM and gastrocnemius EM than ovary EM group and sham control. The ReHo value is decreased in gastrocnemius EM in right thalamus and left olfactory tubercle compared with other three groups. The number of neurons was decreased; cavitation around nucleus, and pyknotic homogenous nuclei. Nissl bodies were stained deeply, and the shape was irregular in gastrocnemius EM by Nissl staining in right thalamus. In left olfactory tubercle, there was no significant difference in 4 groups. Conclusions The thalamus may be the potential key brain region for the central sensitization mechanism of various location-EM pain. The oxidative activation may be weakened in thalamus in gastrocnemius EM group with more severe pain. This finding could lend support for future research on the imageology and pathology of various location-EM pain.
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Affiliation(s)
- Ping Zheng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jian Mei
- Physical Education College, Soochow University, Suzhou 215000, China
| | - Jinhua Leng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Shuangzheng Jia
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Zhiyue Gu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Sikai Chen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Wen Zhang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Aoshuang Cheng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Dalong Guo
- Air Force Characteristic Medical Center, PLA Air Force Medical University, Beijing 100142, China
| | - Jinghe Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Yasko JR, Moss IL, Mains RE. Transcriptional Profiling of Non-injured Nociceptors After Spinal Cord Injury Reveals Diverse Molecular Changes. Front Mol Neurosci 2019; 12:284. [PMID: 32038157 PMCID: PMC6988781 DOI: 10.3389/fnmol.2019.00284] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/08/2019] [Indexed: 01/01/2023] Open
Abstract
Traumatic spinal cord injury (SCI) has devastating implications for patients, including a high predisposition for developing chronic pain distal to the site of injury. Chronic pain develops weeks to months after injury, consequently, patients are treated after irreparable changes have occurred. Nociceptors are central to chronic pain; however, the diversity of this cellular population presents challenges to understanding mechanisms and attributing pain modalities to specific cell types. To begin to address how peripheral sensory neurons below the injury level may contribute to the below-level pain reported by SCI patients, we examined SCI-induced changes in gene expression in lumbar dorsal root ganglia (DRG) below the site of injury. SCI was performed at the T10 vertebral level, with injury produced by a vessel clip with a closing pressure of 15 g for 1 min. Alterations in gene expression produce long-term sensory changes, therefore, we were interested in studying SCI-induced transcripts before the onset of chronic pain, which may trigger changes in downstream signaling pathways and ultimately facilitate the transmission of pain. To examine changes in the nociceptor subpopulation in DRG distal to the site of injury, we retrograde labeled sensory neurons projecting to the hairy hindpaw skin with fluorescent dye and collected the corresponding lumbar (L2–L6) DRG 4 days post-injury. Following dissociation, labeled neurons were purified by fluorescence-activated cell sorting (FACS). RNA was extracted from sorted sensory neurons of naïve, sham, or SCI mice and sequenced. Transcript abundances validated that the desired population of nociceptors were isolated. Cross-comparisons to data sets from similar studies confirmed, we were able to isolate our cells of interest and identify a unique pattern of gene expression within a subpopulation of neurons projecting to the hairy hindpaw skin. Differential gene expression analysis showed high expression levels and significant transcript changes 4 days post-injury in SCI cell populations relevant to the onset of chronic pain. Regulatory interrelationships predicted by pathway analysis implicated changes within the synaptogenesis signaling pathway as well as networks related to inflammatory signaling mechanisms, suggesting a role for synaptic plasticity and a correlation with pro-inflammatory signaling in the transition from acute to chronic pain.
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Affiliation(s)
- Jessica R Yasko
- Department of Neuroscience, University of Connecticut Health Center, Farmington, CT, United States
| | - Isaac L Moss
- Department of Orthopedic Surgery and the Comprehensive Spine Center, University of Connecticut Health Center, Farmington, CT, United States
| | - Richard E Mains
- Department of Neuroscience, University of Connecticut Health Center, Farmington, CT, United States
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Li T, Mamillapalli R, Ding S, Chang H, Liu ZW, Gao XB, Taylor HS. Endometriosis alters brain electrophysiology, gene expression and increases pain sensitization, anxiety, and depression in female mice. Biol Reprod 2019; 99:349-359. [PMID: 29425272 DOI: 10.1093/biolre/ioy035] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/05/2018] [Indexed: 11/14/2022] Open
Abstract
Endometriosis is an estrogen-dependent inflammatory disorder among reproductive-aged women associated with pelvic pain, anxiety, and depression. Pain is characterized by central sensitization; however, it is not clear if endometriosis leads to increased pain perception or if women with the disease are more sensitive to pain, increasing the detection of endometriosis. Endometriosis was induced in mice and changes in behavior including pain perception, brain electrophysiology, and gene expression were characterized. Behavioral tests revealed that mice with endometriosis were more depressed, anxious and sensitive to pain compared to sham controls. Microarray analyses confirmed by qPCR identified differential gene expression in several regions of brain in mice with endometriosis. In these mice, genes such as Gpr88, Glra3 in insula, Chrnb4, Npas4 in the hippocampus, and Lcn2 in the amygdala were upregulated while Lct, Serpina3n (insula), and Nptx2 (amygdala) were downregulated. These genes are involved in anxiety, locomotion, and pain. Patch clamp recordings in the amygdala were altered in endometriosis mice demonstrating an effect of endometriosis on brain electrophysiology. Endometriosis induced pain sensitization, anxiety, and depression by modulating brain gene expression and electrophysiology; the effect of endometriosis on the brain may underlie pain sensitization and mood disorders reported in women with the disease.
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Affiliation(s)
- Tian Li
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Ramanaiah Mamillapalli
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Sheng Ding
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
| | - Hao Chang
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
| | - Zhong-Wu Liu
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Xiao-Bing Gao
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Hugh S Taylor
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
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Singh R, Xie W, Williams J, Vince R, More SS. Discovery of Anticancer Clinical Candidate, Tosedostat, As an Analgesic Agent. ACS Chem Neurosci 2019; 10:4007-4017. [PMID: 31415151 DOI: 10.1021/acschemneuro.9b00230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Tosedostat is an inhibitor of aminopeptidases currently in phase II clinical trials for the treatment of blood-related cancers. In our laboratories, we have discovered that it possesses analgesic properties. Extensive in vivo pharmacological studies for the determination of antinociceptive effects of tosedostat are presented here. These studies have indicated that the observed analgesic effect of tosedostat stems from its action on the peripheral nervous system with minimal contribution from the central nervous system. Additionally, when given in combination with morphine, tosedostat exerts a synergistic analgesic effect resulting in a reduction of effective dosages required to achieve the same analgesic effect. With broad implications in addressing the opioid addiction crisis, these revelations attest to tosedostat being a highly valuable drug candidate with diverse pharmacological functions.
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Affiliation(s)
- Rohit Singh
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Wei Xie
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jessica Williams
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Robert Vince
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Swati S. More
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Xie W, Xie J, Vince R, More SS. Guanabenz Attenuates Acetaminophen-Induced Liver Toxicity and Synergizes Analgesia in Mice. Chem Res Toxicol 2019; 33:162-171. [DOI: 10.1021/acs.chemrestox.9b00162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Xie
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jiashu Xie
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Robert Vince
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Swati S. More
- Center for Drug Design, College of Pharmacy, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Over-expression of miR-34a induces rapid cognitive impairment and Alzheimer's disease-like pathology. Brain Res 2019; 1721:146327. [PMID: 31295467 DOI: 10.1016/j.brainres.2019.146327] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/28/2019] [Accepted: 07/07/2019] [Indexed: 01/24/2023]
Abstract
Autosomal dominant Alzheimer disease (AD) is caused by rare mutations in one of three specific genes. This is in contrast to idiopathic, late-onset AD (LOAD), which has a more polygenetic risk profile and represents more than 95% of cases. Previously, we have demonstrated that increased expression of microRNA (miRNA)-34a (miR-34a) in AD brain targets genes linked to synaptic plasticity, energy metabolism, and resting state network activity. Here we report the generation of a heterozygous, conditional miR-34a overexpression mouse (miR-34a+/-(TetR-TetO-miR-34a) Transgenic Mice). Doxycycline-treated mice of either sex exhibited profound behavioral impairment compared to untreated groups with only 1-2 months of over-expression of miR-34a. Cognitive impairment of individual mice in T- and Y-maze tasks correlated with elevated miR-34a expression in many parts of the brain including the hippocampus and prefrontal cortex, regions which are known to be involved in this task and implicated in LOAD dysfunction. Immunocytochemistry of brain sections from mice show high amyloid β and phosphorylated tau-specific staining in the hippocampus and cortex. Analysis of protein samples from these mice revealed that miR-34a targets specific genes involved in memory formation, amyloid precursor protein (APP) metabolism and phosphorylation-dephosphorylation of tau. Thus, our results suggest that the polygenetic dysfunction caused by miR-34a may occur in LOAD and disclose miR-34a as a potential therapeutic target. SIGNIFICANCE STATEMENT: Late-onset Alzheimer disease (LOAD) is associated with multiple gene alleles, a polygenetic profile of risk factors that is difficult to model in animals. Our approach to modeling LOAD was to produce a conditional over-expressing, miR-34a mouse using doxycycline-induction to activate expression. We observed that miR-34a over-expression results in a rapid cognitive impairment, associated with accumulation of intracellular Aβ and tau hyperphosphorylation in multiple brain regions. Targets for miR-34a, including ADAM10, NMDAR 2B, and SIRT1 RNAs, were profoundly reduced by miR-34a over-expression. Collectively, these results indicate that a rapid, profound cognitive decline and Alzheimer's disease neuropathology can be induced with miR-34a over-expression, suggesting that this animal model may represent a polygenetic risk factor model for LOAD.
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78
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Jaffal SM, Abbas MA, Alsalem M, Al-Najjar BO. Evidence for the involvement of opioid receptor in Ajuga chamaepitys action in chemical and thermal models of pain in BALB/c mice. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02353-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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79
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Manjarrez- M, Gonzalez-M R, Garza-Ramo MADL, Hernandez- HC, Cruz-Palma G, Quiroga-Ga MA, Gonzalez LZT, Palomares- PI, Galindo-La C, Carvajal-M MDLA. Analgesic Effect of Herbal Extract. INT J PHARMACOL 2019. [DOI: 10.3923/ijp.2019.629.635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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80
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Hammels I, Binczek E, Schmidt-Soltau I, Jenke B, Thomas A, Vogel M, Thevis M, Filipova D, Papadopoulos S, Stoffel W. Novel CB1-ligands maintain homeostasis of the endocannabinoid system in ω3- and ω6-long-chain-PUFA deficiency. J Lipid Res 2019; 60:1396-1409. [PMID: 31167809 PMCID: PMC6672042 DOI: 10.1194/jlr.m094664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/04/2019] [Indexed: 01/01/2023] Open
Abstract
Mammalian ω3- and ω6-PUFAs are synthesized from essential fatty acids (EFAs) or supplied by the diet. PUFAs are constitutive elements of membrane architecture and precursors of lipid signaling molecules. EFAs and long-chain (LC)-PUFAs are precursors in the synthesis of endocannabinoid ligands of Gi/o protein-coupled cannabinoid receptor (CB)1 and CB2 in the endocannabinoid system, which critically regulate energy homeostasis as the metabolic signaling system in hypothalamic neuronal circuits and behavioral parameters. We utilized the auxotrophic fatty acid desaturase 2-deficient (fads2−/−) mouse, deficient in LC-PUFA synthesis, to follow the age-dependent dynamics of the PUFA pattern in the CNS-phospholipidome in unbiased dietary studies of three cohorts on sustained LC-PUFA-free ω6-arachidonic acid- and DHA-supplemented diets and their impact on the precursor pool of CB1 ligands. We discovered the transformation of eicosa-all cis-5,11,14-trienoic acid, uncommon in mammalian lipidomes, into two novel endocannabinoids, 20:35,11,14-ethanolamide and 2-20:35,11,14-glycerol. Their function as ligands of CB1 has been characterized in HEK293 cells. Labeling experiments excluded Δ8-desaturase activity and proved the position specificity of FADS2. The fads2−/− mutant might serve as an unbiased model in vivo in the development of novel CB1 agonists and antagonists.
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Affiliation(s)
- Ina Hammels
- Center of Molecular Medicine (CMMC), Laboratory of Molecular Neurosciences, Institute of Biochemistry, University of Cologne, 50931 Cologne, Germany.,Cluster of Excellence, Cellular Stress Response in Aging Related Diseases (CECAD) University of Cologne, 50931 Cologne, Germany
| | - Erika Binczek
- Center of Molecular Medicine (CMMC), Laboratory of Molecular Neurosciences, Institute of Biochemistry, University of Cologne, 50931 Cologne, Germany
| | - Inga Schmidt-Soltau
- Center of Molecular Medicine (CMMC), Laboratory of Molecular Neurosciences, Institute of Biochemistry, University of Cologne, 50931 Cologne, Germany
| | - Britta Jenke
- Center of Molecular Medicine (CMMC), Laboratory of Molecular Neurosciences, Institute of Biochemistry, University of Cologne, 50931 Cologne, Germany
| | - Andreas Thomas
- Institute of Biochemistry Deutsche Sporthochschule (DSHS) Cologne, 50933 Cologne, Germany
| | - Matthias Vogel
- Institute of Biochemistry Deutsche Sporthochschule (DSHS) Cologne, 50933 Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry Deutsche Sporthochschule (DSHS) Cologne, 50933 Cologne, Germany
| | - Dilyana Filipova
- Institute of Vegetative Physiology, Center of Physiology and Pathophysiology, University of Cologne, 50931 Cologne, Germany
| | - Symeon Papadopoulos
- Institute of Vegetative Physiology, Center of Physiology and Pathophysiology, University of Cologne, 50931 Cologne, Germany
| | - Wilhelm Stoffel
- Center of Molecular Medicine (CMMC), Laboratory of Molecular Neurosciences, Institute of Biochemistry, University of Cologne, 50931 Cologne, Germany .,Cluster of Excellence, Cellular Stress Response in Aging Related Diseases (CECAD) University of Cologne, 50931 Cologne, Germany.,Institute of Biochemistry Deutsche Sporthochschule (DSHS) Cologne, 50933 Cologne, Germany
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81
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Liu X, Yan D, Guo SW. Sensory nerve-derived neuropeptides accelerate the development and fibrogenesis of endometriosis. Hum Reprod 2019; 34:452-468. [PMID: 30689856 DOI: 10.1093/humrep/dey392] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 12/04/2018] [Accepted: 12/14/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Xishi Liu
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China
| | - Dingmin Yan
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, China
| | - Sun-Wei Guo
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China
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Marchev S, Andreeva-Gateva P, Tzoneva R, Surcheva S, Tzonev A, Kamenova K, Angelova VT, Tchekalarova J, Vlaskovska M. Analgesic activity of some aroylhydrazone-based molecular hybrids with antiseizure activity: in vivo and in silico evaluations. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2018.1555009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Stanislav Marchev
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Pavlina Andreeva-Gateva
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Department of Internal Medicine, Pharmacology and Clinical Pharmacology, Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Roumiana Tzoneva
- Department of Lipid-Protein Interactions, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Slavina Surcheva
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Alex Tzonev
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Kalina Kamenova
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Violina T. Angelova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Jana Tchekalarova
- Department of Behaviour Neurobiology, Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Mila Vlaskovska
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
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83
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Chang SL, Huang W, Han H, Sariyer IK. Binge-Like Exposure to Ethanol Enhances Morphine's Anti-nociception in B6 Mice. Front Psychiatry 2019; 9:756. [PMID: 30723430 PMCID: PMC6349749 DOI: 10.3389/fpsyt.2018.00756] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/20/2018] [Indexed: 01/01/2023] Open
Abstract
Elevation of the blood ethanol concentration (BEC) to > 80 mg/dL (17.4 mM) after binge drinking enhances inflammation in brain and neuroimmune signaling pathways. Morphine abuse is frequently linked to excessive drinking. Morphine exerts its actions mainly via the seven transmembrane G-protein-coupled mu opioid receptors (MORs). Opioid use disorders (OUDs) include combination of opioids with alcohol, leading to opioid overdose-related deaths. We hypothesized that binge drinking potentiates onset and progression of OUD. Using C57BL/6J (B6) mice, we first characterized time-dependent inflammatory gene expression change as molecular markers using qRT-PCR within 24 h after binge-like exposure to high-dose, high-concentration ethanol (EtOH). The mice were given one injection of EtOH (5 g/kg, 42% v/v, i.g.) and sacrificed at 2.5 h, 5 h, 7.5 h, or 24 h later. Inflammatory cytokines interleukin (IL)-1β, IL-6, and IL-18 were elevated in both the striatum (STr) and the nucleus accumbens (NAc) of the mice. We then investigated the expression profile of MOR in the STr at 2 min, 5 h, or 24 h after the first EtOH injection and at 24 h and 48 h after the third injection. This binge-like exposure to EtOH upregulated MOR expression in the STr and NAc, an effect that could enhance morphine's anti-nociception. Therefore, we examined the impact of binge-like exposure to EtOH on morphine's anti-nociception at the behavioral level. The mice were treated with or without 3-d binge-like exposure to EtOH, and the anti-nociceptive changes were evaluated using the hot-plate test 24 h after the final (3rd) EtOH injection with or without a cumulative subcutaneous dose (0, 0.1, 0.3, 1.0, and 3.0 mg/kg) of morphine at intervals of 30 min. The response curve of the mice given EtOH was shifted to the left, showing enhanced latency to response to morphine up to 3 mg/kg. Furthermore, co-treatment with the MOR antagonist naltrexone blocked morphine's anti-nociception in animals given either EtOH or saline. This confirms that MOR is involved in binge-like exposure to EtOH-induced changes in morphine's anti-nociception. Our results suggest that EtOH enhanced latency to analgesic response to morphine, and such effect might initiate the onset and progression of OUDs.
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Affiliation(s)
- Sulie L Chang
- Institute of NeuroImmune Pharmacology, South Orange, NJ, United States
- Department of Biological Sciences, Seton Hall University, South Orange, NJ, United States
| | - Wenfei Huang
- Institute of NeuroImmune Pharmacology, South Orange, NJ, United States
- Department of Biological Sciences, Seton Hall University, South Orange, NJ, United States
| | - Haijun Han
- Institute of NeuroImmune Pharmacology, South Orange, NJ, United States
| | - Ilker K Sariyer
- Department of Neuroscience, Temple University School of Medicine, Philadelphia, PA, United States
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84
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Lv SY, Cui B, Yang Y, Du H, Zhang X, Zhou Y, Ye W, Nie X, Li Y, Wang Q, Chen WD, Wang YD. Spexin/NPQ Induces FBJ Osteosarcoma Oncogene (Fos) and Produces Antinociceptive Effect against Inflammatory Pain in the Mouse Model. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:886-899. [PMID: 30664863 DOI: 10.1016/j.ajpath.2018.12.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 11/05/2018] [Accepted: 12/07/2018] [Indexed: 01/12/2023]
Abstract
Spexin/NPQ is a novel highly conserved neuropeptide. It has a widespread expression in the periphery and central nervous system. However, the effects of central spexin on acute inflammatory pain are still unknown. This study explored the mechanisms and effects of supraspinal spexin on inflammatory pain. The results from the mouse formalin test show that i.c.v. administration of spexin decreased licking/biting time during the late and early phases. The nonamidated spexin had no effect on pain response. The antinociception of spexin was blocked by galanin receptor 3 antagonist SNAP 37889. The Galr3 and Adcy4 mRNA levels in the brain were increased after injection with spexin. The antinociceptive effects of spexin were completely reversed by opioid receptor antagonist naloxone and κ-opioid receptor antagonist nor-binaltorphimine dihydrochloride. Spexin up-regulated the dynorphin and κ-opioid receptor gene and protein expression. PCR array assay and real-time PCR analysis show that spexin up-regulated the mRNA level of the FBJ osteosarcoma oncogene (Fos). T-5224, the inhibitor of c FBJ osteosarcoma oncogene (c-Fos)/activator protein 1 (AP-1), blocked the increased mRNA level of Pdyn and Oprk1 induced by spexin. I.C.V. spexin (2.43 mg/kg) increased the number of c-Fos-positive neurons in most subsections of periaqueductal gray. In addition, in the acetic acid-induced writhing test, i.c.v. spexin produced an antinociceptive effect. Our results indicate that spexin might be a novel neuropeptide with an antinociceptive effect against acute inflammatory pain.
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Affiliation(s)
- Shuang-Yu Lv
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Binbin Cui
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Yanjie Yang
- Laboratory of Cell Signal Transduction, School of Medicine, Henan University, Kaifeng, China
| | - Hua Du
- Department of Pathology, College of Basic Medicine, Inner Mongolia Medical University, Hohhot, China
| | - Xiaomei Zhang
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Yuchen Zhou
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Wenling Ye
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Xiaobo Nie
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Yang Li
- Department of Orthopaedics, The 969th Hospital of People's Liberation Army of China, Hohhot, China
| | - Qun Wang
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Wei-Dong Chen
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China; Department of Pathology, College of Basic Medicine, Inner Mongolia Medical University, Hohhot, China.
| | - Yan-Dong Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China.
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85
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Mortari M, Dos Anjos L, Gonçalves J, De Araujo B. Antinociceptive activity of the peptide fraction from the venom of social wasp Pseudopolybia vespiceps testacea. Pharmacogn Mag 2019. [DOI: 10.4103/pm.pm_238_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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86
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Hestehave S, Abelson KSP, Brønnum Pedersen T, Munro G. The analgesic efficacy of morphine varies with rat strain and experimental pain model: implications for target validation efforts in pain drug discovery. Eur J Pain 2018; 23:539-554. [PMID: 30318662 PMCID: PMC6587867 DOI: 10.1002/ejp.1327] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 09/07/2018] [Accepted: 10/10/2018] [Indexed: 11/25/2022]
Abstract
Background Translating efficacy of analgesic drugs from animal models to humans remains challenging. Reasons are multifaceted, but lack of sufficiently rigorous preclinical study design criteria and phenotypically relevant models may be partly responsible. To begin to address this fundamental issue, we assessed the analgesic efficacy of morphine in three inbred rat strains (selected based on stress reactivity and affective/pain phenotypes), and outbred Sprague Dawley (SD) rats supplied from two vendors. Methods Sensitivity to morphine (0.3–6.0 mg/kg, s.c.) was evaluated in the hot plate test of acute thermal nociception, the Complete Freund's Adjuvant (CFA) model of inflammatory‐induced mechanical hyperalgesia, and in a locomotor motility assay in male rats from the following strains; Lewis (LEW), Fischer (F344), Wistar Kyoto (WKY), and SD's from Envigo and Charles River. Results F344 and SD rats were similarly sensitive to morphine in hot plate and CFA‐induced inflammatory hyperalgesia (Minimum Effective Dose (MED) = 3.0 mg/kg). WKY rats developed a less robust mechanical hypersensitivity after CFA injection, and were less sensitive to morphine in both pain tests (MED = 6.0 mg/kg). LEW rats were completely insensitive to morphine in the hot plate test, in contrast to the reversal of CFA‐induced hyperalgesia (MED = 3.0 mg/kg). All strains exhibited a dose‐dependent reduction in locomotor activity at 3.0–6.0 mg/kg. Conclusion Sensory phenotyping in response to acute thermal and inflammatory‐induced pain, and sensitivity to morphine in various inbred and outbred rat strains indicates that different pathophysiological mechanisms are engaged after injury. This could have profound implications for translating preclinical drug discovery efforts into pain patients. Significance The choice of rat strain used in preclinical pain research can profoundly affect the outcome of experiments in relation to (a) nociceptive threshold responses, and (b) efficacy to analgesic treatment, in assays of acute and tonic inflammatory nociceptive pain.
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Affiliation(s)
- Sara Hestehave
- Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,H. Lundbeck A/S, Valby, Denmark
| | - Klas S P Abelson
- Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Gordon Munro
- Department of Neurology, Danish Headache Center, Glostrup Research Institute, Glostrup, Copenhagen, Denmark
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87
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Katanić J, Pferschy-Wenzig EM, Mihailović V, Boroja T, Pan SP, Nikles S, Kretschmer N, Rosić G, Selaković D, Joksimović J, Bauer R. Phytochemical analysis and anti-inflammatory effects of Filipendula vulgaris Moench extracts. Food Chem Toxicol 2018; 122:151-162. [PMID: 30291943 DOI: 10.1016/j.fct.2018.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/19/2018] [Accepted: 10/01/2018] [Indexed: 12/28/2022]
Abstract
Filipendula vulgaris Moench (dropwort) is used in traditional medicine for relieving various inflammation-related diseases. In the present study, the phytochemical profile of F. vulgaris aerial part (FVA) and root (FVR) methanolic extracts was evaluated by LC-DAD-HRMS analysis. Furthermore, their in vitro and in vivo anti-inflammatory effects, as well as their potential cytotoxicity, were assessed. Results showed that the extracts mainly contain phenolics like flavonoids, hydrolyzable tannins, procyanidins, and phenolic acid derivatives, including gaultherin. No in vitro cytotoxicity was found at the highest concentration (50 μg/mL). FVA extract (50 μg/mL) significantly inhibited cyclooxygenase-1 and -2 (COX-1 and COX-2) activities in vitro (>50% inhibition), and FVR extract considerably inhibited COX-2 activity (52.5 ± 2.7%) without affecting COX-2 gene expression in LPS-stimulated THP-1 cells. The extracts demonstrated prominent in vivo anti-inflammatory potential upon oral administration in rats. Especially FVA extract at 100 and 200 mg/kg significantly inhibited carrageenan-induced edema formation. From these results, it can be concluded that F. vulgaris extracts possess interesting anti-inflammatory properties.
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Affiliation(s)
- Jelena Katanić
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia.
| | - Eva-Maria Pferschy-Wenzig
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria
| | - Vladimir Mihailović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Tatjana Boroja
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia; University of Novi Sad, Faculty of Agriculture, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - San-Po Pan
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria
| | - Stefanie Nikles
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria
| | - Nadine Kretschmer
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria
| | - Gvozden Rosić
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Dragica Selaković
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Jovana Joksimović
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Rudolf Bauer
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria
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88
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Ito W, Huang H, Brayman V, Morozov A. Impaired social contacts with familiar anesthetized conspecific in CA3-restricted brain-derived neurotrophic factor knockout mice. GENES BRAIN AND BEHAVIOR 2018; 18:e12513. [PMID: 30120813 DOI: 10.1111/gbb.12513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 07/20/2018] [Accepted: 08/14/2018] [Indexed: 11/29/2022]
Abstract
Familiarity is conveyed by social cues and determines behaviors toward conspecifics. Here, we characterize a novel assay for social behaviors in mice-contacts with anesthetized conspecific-which eliminates reciprocal interactions, including intermale aggression and shows behaviors that are independent of the demonstrator's activity. During the initial 10 minutes (phase-1), the wild-type (WT) subjects contacted the anesthetized conspecifics vigorously regardless of familiarity. During the subsequent 80 minutes (phase-2), however, they contacted more with familiar than unfamiliar conspecifics. We then applied this test to highly aggressive mice with a hippocampal CA3-restricted knockout (KO) of brain-derived neurotrophic factor (BDNF), in which aggression may mask other social behaviors. The KO mice showed less preference for contacting familiar conspecifics than did WT mice during phase-2 but no differences during phase-1. Among nonsocial behaviors, WT mice also spent less time eating in the presence of familiar than with unfamiliar conspecifics, which was not seen in KO mice. In addition, KO mice exhibited reduced pain sensitization. Altogether, these findings suggest that CA3-specific deletion of BDNF results in deficits in circuits that process social cues from familiar conspecifics as well as pain and may underlie empathy-like behaviors.
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Affiliation(s)
- Wataru Ito
- Virginia Tech Carilion Research Institute, Roanoke, Virginia
| | - Howard Huang
- Virginia Tech Carilion Research Institute, Roanoke, Virginia
| | - Vanessa Brayman
- Virginia Tech Carilion Research Institute, Roanoke, Virginia.,Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, Virginia
| | - Alexei Morozov
- Virginia Tech Carilion Research Institute, Roanoke, Virginia.,School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia.,Department of Psychiatry and Behavioral Medicine, Virginia Tech Carilion School of Medicine, Roanoke, Virginia
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89
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Nobiletin alleviates endometriosis via down-regulating NF-κB activity in endometriosis mouse model. Biosci Rep 2018; 38:BSR20180470. [PMID: 29871974 PMCID: PMC6013702 DOI: 10.1042/bsr20180470] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/28/2018] [Accepted: 06/01/2018] [Indexed: 12/23/2022] Open
Abstract
Nobiletin exhibits protective potential on inflammation and inhibits the activation of transcription factors nuclear factor-κB (NF-κB). However, its effects on the progression of endometriosis remain unsettled. The present study aimed to explore the in vivo alleviation of nobiletin on endometriosis and its mechanism of action. The mouse model of endometriosis was established and administered with nobiletin. The ectopic lesion size was measured and the hotplate test was performed to assess the amelioration of nobiletin on endometriosis. The expression of proliferation and angiogenesis relevant genes including proliferating cell nuclear antigen (PCNA), vascular endothelial growth factor (VEGF), and E-cadherin was measured by immunostaining and the mRNA expression of proinflammatory mediators including interleukin (IL)-6, IL-1β, tumor necrosis factor (TNF)-α, matrix metalloproteinases (MMP)-1, and MMP-3 was measured by RT-PCR. The change of NF-κB activity in endometriotic cells was evaluated by Western blotting and confirmed by luciferase assay. Administration of nobiletin significantly reduced lesions size and pain in endometriosis mice. Nobiletin significantly altered the expression of PCNA, VEGF, and E-cadherin in ectopic endometrium, as well as the levels of IL-6, IL-1β, TNF-α, MMP-1, and MMP-3. Nobiletin also showed remarkably impairment on the activation of NF-κB in promoting endometriotic cells, likely targeting on the activity of IκB kinases (IKKs). The present study provides the first evidence that nobiletin exerts protection on endometriosis via inhibition the activation of NF-κB, specifically on the activity of IκB kinases.
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90
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Zarei M, Mohammadi S, Komaki A. Antinociceptive activity of Inula britannica L. and patuletin: In vivo and possible mechanisms studies. JOURNAL OF ETHNOPHARMACOLOGY 2018; 219:351-358. [PMID: 29567278 DOI: 10.1016/j.jep.2018.03.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 03/08/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Inula britannica L. is a predominant medicinal plant traditionally utilized in the treatments of arthritis and back pain in Iranian folk medicine. AIM OF THE STUDY The purpose of this research was to evaluate the antinociceptive effects of Inula britannica L. flower essential oil (IBLEO) and one of its major constituents, Patuletin (Pn), in male mice. MATERIALS AND METHODS In this study, we used pain assessment tests including acetic acid-induced writhing, tail-flick (TF), formalin induced paw licking (FIPL) model, and glutamate-induced paw licking (GPL). For understanding the supposed antinociceptive mechanisms of IBLEO, opioid and L-arginine/NO/cGMP/ KATP pathways were examined. RESULTS In the TF, writhing, GPL, and FIPL tests, a dosage of 100 mg/kg of IBLEO showed noteworthy antinociceptive effects in comparison with control (p < 0.05). In writhing test, administration of selective opioid antagonists (naltrindole, nor-binaltorphimine, and naloxonazine) attenuated the antinociceptive effect of IBLEO in comparison with control (p < 0.001). Both methylene blue and glibenclamide blocked the antinociceptive effect of IBLEO (p < 0.05), but the administration of L-arginine or sodium nitroprusside fundamentally potentiated the antinociception induced by IBLEO in phase II of the FIPL (p < 0.05). Additionally, patuletin showed significant antinociceptive effects in writhing, FIPL, and GPL tests (p < 0.01). CONCLUSION The results of this examination showed that IBLEO and Pn have antinociceptive effects. The modulation of glutamatergic systems by opioid receptors could be involved, at least in part, in these effects. Our data also suggest the activation of the L-arginine/NO/cGMP/KATP pathway in IBLEO antinociceptive effects.
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Affiliation(s)
- Mohammad Zarei
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Saeed Mohammadi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Alireza Komaki
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
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91
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Abstract
Along with the well-known rewarding effects, activation of nicotinic acetylcholine receptors (nAChRs) can also relieve pain, and some nicotinic agonists have analgesic efficacy similar to opioids. A major target of analgesic drugs is the descending pain modulatory pathway, including the ventrolateral periaqueductal gray (vlPAG) and the rostral ventromedial medulla (RVM). Although activating nAChRs within this circuitry can be analgesic, little is known about the subunit composition and cellular effects of these receptors, particularly within the vlPAG. Using electrophysiology in brain slices from adult male rats, we examined nAChR effects on vlPAG neurons that project to the RVM. We found that 63% of PAG-RVM projection neurons expressed functional nAChRs, which were exclusively of the α7-subtype. Interestingly, the neurons that express α7 nAChRs were largely nonoverlapping with those expressing μ-opioid receptors (MOR). As nAChRs are excitatory and MORs are inhibitory, these data suggest distinct roles for these neuronal classes in pain modulation. Along with direct excitation, we also found that presynaptic nAChRs enhanced GABAergic release preferentially onto neurons that lacked α7 nAChRs. In addition, presynaptic nAChRs enhanced glutamatergic inputs onto all PAG-RVM projection neuron classes to a similar extent. In behavioral testing, both systemic and intra-vlPAG administration of the α7 nAChR-selective agonist, PHA-543,613, was antinociceptive in the formalin assay. Furthermore, intra-vlPAG α7 antagonist pretreatment blocked PHA-543,613-induced antinociception via either administration method. Systemic administration of submaximal doses of the α7 agonist and morphine produced additive antinociceptive effects. Together, our findings indicate that the vlPAG is a key site of action for α7 nAChR-mediated antinociception.
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92
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Uritu CM, Mihai CT, Stanciu GD, Dodi G, Alexa-Stratulat T, Luca A, Leon-Constantin MM, Stefanescu R, Bild V, Melnic S, Tamba BI. Medicinal Plants of the Family Lamiaceae in Pain Therapy: A Review. Pain Res Manag 2018; 2018:7801543. [PMID: 29854039 PMCID: PMC5964621 DOI: 10.1155/2018/7801543] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 03/09/2018] [Accepted: 03/29/2018] [Indexed: 12/24/2022]
Abstract
Recently, numerous side effects of synthetic drugs have lead to using medicinal plants as a reliable source of new therapy. Pain is a global public health problem with a high impact on life quality and a huge economic implication, becoming one of the most important enemies in modern medicine. The medicinal use of plants as analgesic or antinociceptive drugs in traditional therapy is estimated to be about 80% of the world population. The Lamiaceae family, one of the most important herbal families, incorporates a wide variety of plants with biological and medical applications. In this study, the analgesic activity, possible active compounds of Lamiaceae genus, and also the possible mechanism of actions of these plants are presented. The data highlighted in this review paper provide valuable scientific information for the specific implications of Lamiaceae plants in pain modulation that might be used for isolation of potentially active compounds from some of these medicinal plants in future and formulation of commercial therapeutic agents.
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Affiliation(s)
- Cristina M. Uritu
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Cosmin T. Mihai
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | - Gianina Dodi
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | - Andrei Luca
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | - Raluca Stefanescu
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Veronica Bild
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Silvia Melnic
- Institute of Chemistry, Academy of Sciences of Moldova, MD-2028 Chisinau, Moldova
| | - Bogdan I. Tamba
- “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
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93
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Sulima A, Jalah R, Antoline JFG, Torres OB, Imler GH, Deschamps JR, Beck Z, Alving CR, Jacobson AE, Rice KC, Matyas GR. A Stable Heroin Analogue That Can Serve as a Vaccine Hapten to Induce Antibodies That Block the Effects of Heroin and Its Metabolites in Rodents and That Cross-React Immunologically with Related Drugs of Abuse. J Med Chem 2017; 61:329-343. [PMID: 29236495 PMCID: PMC5767880 DOI: 10.1021/acs.jmedchem.7b01427] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
![]()
An
improved synthesis of a haptenic heroin surrogate 1 (6-AmHap)
is reported. The intermediate needed for the preparation
of 1 was described in the route in the synthesis of 2 (DiAmHap). A scalable procedure was developed to install
the C-3 amido group. Using the Boc protectng group in 18 allowed preparation of 1 in an overall yield of 53%
from 4 and eliminated the necessity of preparing the
diamide 13. Hapten 1 was conjugated to tetanus
toxoid and mixed with liposomes containing monophosphoryl lipid A
as an adjuvant. The 1 vaccine induced high anti-1 IgG levels that reduced heroin-induced antinociception and
locomotive behavioral changes following repeated subcutaneous and
intravenous heroin challenges in mice and rats. Vaccinated mice had
reduced heroin-induced hyperlocomotion following a 50 mg/kg heroin
challenge. The 1 vaccine-induced antibodies bound to
heroin and other abused opioids, including hydrocodone, oxycodone,
hydromorphone, oxymorphone, and codeine.
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Affiliation(s)
- Agnieszka Sulima
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services , 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Rashmi Jalah
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine , 6720A Rockledge Drive, Bethesda, Maryland 20817, United States.,U.S. Military HIV Research Program, Walter Reed Army Institute of Research , 503 Robert Grant Avenue, Silver Spring, Maryland 20910, United States
| | - Joshua F G Antoline
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services , 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Oscar B Torres
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine , 6720A Rockledge Drive, Bethesda, Maryland 20817, United States.,U.S. Military HIV Research Program, Walter Reed Army Institute of Research , 503 Robert Grant Avenue, Silver Spring, Maryland 20910, United States
| | - Gregory H Imler
- Center for Biomolecular Science and Engineering, Naval Research Laboratory , Washington D.C. 20375, United States
| | - Jeffrey R Deschamps
- Center for Biomolecular Science and Engineering, Naval Research Laboratory , Washington D.C. 20375, United States
| | - Zoltan Beck
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine , 6720A Rockledge Drive, Bethesda, Maryland 20817, United States.,U.S. Military HIV Research Program, Walter Reed Army Institute of Research , 503 Robert Grant Avenue, Silver Spring, Maryland 20910, United States
| | - Carl R Alving
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research , 503 Robert Grant Avenue, Silver Spring, Maryland 20910, United States
| | - Arthur E Jacobson
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services , 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Kenner C Rice
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services , 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Gary R Matyas
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research , 503 Robert Grant Avenue, Silver Spring, Maryland 20910, United States
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94
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Abstract
Substance use disorder, especially in relation to opioids such as heroin and fentanyl, is a significant public health issue and has intensified in recent years. As a result, substantial interest exists in developing therapeutics to counteract the effects of abused drugs. A promising universal strategy for antagonizing the pharmacology of virtually any drug involves the development of a conjugate vaccine, wherein a hapten structurally similar to the target drug is conjugated to an immunogenic carrier protein. When formulated with adjuvants and immunized, the immunoconjugate should elicit serum IgG antibodies with the ability to sequester the target drug to prevent its entry to the brain, thereby acting as an immunoantagonist. Despite the failures of first-generation conjugate vaccines against cocaine and nicotine in clinical trials, second-generation vaccines have shown dramatically improved performance in preclinical models, thus renewing the potential clinical utility of conjugate vaccines in curbing substance use disorder. This review explores the critical design elements of drug conjugate vaccines such as hapten structure, adjuvant formulation, bioconjugate chemistry, and carrier protein selection. Methods for evaluating these vaccines are discussed, and recent progress in vaccine development for each drug is summarized.
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Affiliation(s)
- Paul T Bremer
- Departments of Chemistry and Immunology, The Scripps Research Institute, La Jolla, California
| | - Kim D Janda
- Departments of Chemistry and Immunology, The Scripps Research Institute, La Jolla, California
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95
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Takeda K, Pokorski M, Okada Y. Thermal Sensitivity and Dimethyl Sulfoxide (DMSO). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 921:45-50. [PMID: 27241512 DOI: 10.1007/5584_2016_228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Dimethyl sulfoxide (DMSO) is commonly used as a solvent for hydrophobic substances, but the compound's innate bioactivity is an area of limited understanding. In this investigation we seek to determine the analgesic potential of DMSO. We addressed the issue by assessing the perception of thermal pain stimulus, using a 55 °C hotplate design, in conscious mice. The latency of withdrawal behaviors over a range of incremental accumulative intraperitoneal DMSO doses (0.5-15.5 g/kg) in the same mouse was taken as a measure of thermal endurance. The findings were that the latency, on average, amounted to 15-30 s and it differed inappreciably between the sequential DMSO conditions. Nor was it different from the pre-DMSO control conditions. Thus, DMSO did not influence the cutaneous thermal pain perception. The findings do not lend support to those literature reports that point to the plausible antinociceptive potential of DMSO as one of a plethora of its innate bioactivities. However, the findings concern the mouse's footpad nociceptors which have specific morphology and stimulus transduction pathways, which cannot exclude DMSO's antinociceptive influence on other types of pain or in other types of skin. Complex and as yet unresolved neural mechanisms of perception of cutaneous noxious heat stimulus should be further explored with alternative experimental designs.
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Affiliation(s)
- Kotaro Takeda
- Clinical Research Center, National Hospital Organization Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama, 208-0011, Tokyo, Japan
- Fujita Memorial Nanakuri Institute, Fujita Health University, 423 Oodori-cho, Tsu, 514-1296, Mie, Japan
| | - Mieczyslaw Pokorski
- Clinical Research Center, National Hospital Organization Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama, 208-0011, Tokyo, Japan.
- Public Higher Medical Professional School in Opole, 68 Katowicka St, 45-060, Opole, Poland.
| | - Yasumasa Okada
- Clinical Research Center, National Hospital Organization Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama, 208-0011, Tokyo, Japan
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Identification, chemical synthesis and heterologous expression of an antinociceptive peptide from the veined tree frog Trachycephalus typhonius. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.07.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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97
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Nie J, Liu X. Quercetin alleviates generalized hyperalgesia in mice with induced adenomyosis. Mol Med Rep 2017; 16:5370-5376. [PMID: 28849202 PMCID: PMC5647070 DOI: 10.3892/mmr.2017.7238] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 06/08/2017] [Indexed: 01/04/2023] Open
Abstract
Adenomyosis is a common gynecologic disorder characterized by the presence of endometrial glands and stroma within the myometrium. The present study investigated the effect of quercetin in neonatal Imprinting Control Region mice with tamoxifen-induced adenomyosis. The body weight and hotplate response latency of all mice was examined at 4, 8, 12 and 16 weeks after birth. The mice dosed with tamoxifen were divided into four groups: high- or low-quercetin group, valproic acid (VPA) group and untreated group. The group of mice that were neonatally administrated with the solvent only (no tamoxifen), received no treatment and served as a blank control group. After 3 weeks of drug treatment, the potential ability of quercetin to improve the generalized hyperalgesia in mice with induced adenomyosis was evaluated by determining the body weight, pain modulation, examining the myometrial infiltration by histology examination of the uterus and detecting the expression of transient receptor potential cation channel subfamily V member 1 (Trpv-1), phospho (p)-p38 mitogen activated protein kinase p-extracellular signal-regulated kinase (p-ERK) in DRG neurons via immunohistochemistry. The results demonstrated that treatment with quercetin improved the generalized hyperalgesia by extending the hotplate response latency, reduced myometrial infiltration and decreased the expression levels Trpv-1, p-p38 and p-ERK in dorsal root ganglion neurons. The results indicated that quercetin decreases the incidence of hyperalgesia in mice with tamoxifen-induced adenomyosis, and the potential mechanism is through reduced central sensitization, which may be a promising treatment for adenomyosis.
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Affiliation(s)
- Jichan Nie
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Fudan University, Shanghai 200011, P.R. China
| | - Xishi Liu
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Fudan University, Shanghai 200011, P.R. China
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98
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La DS, Peterson EA, Bode C, Boezio AA, Bregman H, Chu-Moyer MY, Coats J, DiMauro EF, Dineen TA, Du B, Gao H, Graceffa R, Gunaydin H, Guzman-Perez A, Fremeau R, Huang X, Ilch C, Kornecook TJ, Kreiman C, Ligutti J, Jasmine Lin MH, McDermott JS, Marx I, Matson DJ, McDonough SI, Moyer BD, Nho Nguyen H, Taborn K, Yu V, Weiss MM. The discovery of benzoxazine sulfonamide inhibitors of Na V 1.7: Tools that bridge efficacy and target engagement. Bioorg Med Chem Lett 2017. [DOI: 10.1016/j.bmcl.2017.05.070] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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99
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Shahid M, Subhan F, Ahmad N, Ullah I. A bacosides containing Bacopa monnieri extract alleviates allodynia and hyperalgesia in the chronic constriction injury model of neuropathic pain in rats. Altern Ther Health Med 2017; 17:293. [PMID: 28583132 PMCID: PMC5460461 DOI: 10.1186/s12906-017-1807-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 05/26/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND The current therapy of neuropathic pain is inadequate and is limited by the extent of pain relief and the occurrence of dose dependant side effects. Insufficient control of pain with conventional medications prompts the use of complementary and alternative medicine therapies by patients with neuropathic pain. This study therefore investigated a standardized methanolic extract of Bacopa monnieri, a widely reputed nootropic plant, for prospective antinociceptive effect in the chronic constriction injury (CCI) model of neuropathic pain. METHODS Placement of four loose ligatures around the sciatic nerve produced partial denervation of the hindpaw in rats. Bacopa monnieri (40 and 80 mg/kg, p.o) and the positive control, gabapentin (75 mg/kg, i.p), were administered daily after CCI or sham surgery and the behavioral paradigms of static- and dynamic-allodynia (paw withdrawal threshold to von Frey filament stimulation [PWT] and paw withdrawal latency to light-brushing [PWL]), cold-allodynia (paw withdrawal duration [PWD] to acetone), heat- (PWL to heat-stimulus) and punctate-hyperalgesia (PWD to pin-prick) were assessed on days 3, 7, 14 and 21. RESULTS CCI consistently generated static- (days 3-21), dynamic- (days 14-21) and cold-allodynia (days 3-21) plus heat- and mechano-hyperalgesia (days 3-21). The tested doses of Bacopa monnieri significantly attenuated the CCI-induced allodynia and hyperalgesia, exemplified by increased PWT (days 7-21), PWL to light brushing (days 14-21) and heat (days 7-21) as well as decreased PWD to pin prick and cold stimuli (days 3-21). The extract also counterbalanced the CCI-induced aberrations in the nociceptive behaviors by increasing the pain threshold to that of pre-surgery baseline. Gabapentin also afforded analogous beneficial behavioral profile but of higher magnitude. CONCLUSIONS Our findings suggest that Bacopa monnieri can be used as adjuvant therapy for neuropathic pain conditions afflicted with allodynia and hyperalgesia.
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100
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BACE1 across species: a comparison of the in vivo consequences of BACE1 deletion in mice and rats. Sci Rep 2017; 7:44249. [PMID: 28281673 PMCID: PMC5345047 DOI: 10.1038/srep44249] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 02/06/2017] [Indexed: 01/18/2023] Open
Abstract
Assessing BACE1 (β-site APP cleaving enzyme 1) knockout mice for general health and neurological function may be useful in predicting risks associated with prolonged pharmacological BACE1 inhibition, a treatment approach currently being developed for Alzheimer’s disease. To determine whether BACE1 deletion-associated effects in mice generalize to another species, we developed a novel Bace1−/− rat line using zinc-finger nuclease technology and compared Bace1−/− mice and rats with their Bace1+/+ counterparts. Lack of BACE1 was confirmed in Bace1−/− animals from both species. Removal of BACE1 affected startle magnitude, balance beam performance, pain response, and nerve myelination in both species. While both mice and rats lacking BACE1 have shown increased mortality, the increase was smaller and restricted to early developmental stages for rats. Bace1−/− mice and rats further differed in body weight, spontaneous locomotor activity, and prepulse inhibition of startle. While the effects of species and genetic background on these phenotypes remain difficult to distinguish, our findings suggest that BACE1’s role in myelination and some sensorimotor functions is consistent between mice and rats and may be conserved in other species. Other phenotypes differ between these models, suggesting that some effects of BACE1 inhibition vary with the biological context (e.g. species or background strain).
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