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Sághy É, Payrits M, Bíró-Sütő T, Skoda-Földes R, Szánti-Pintér E, Erostyák J, Makkai G, Sétáló G, Kollár L, Kőszegi T, Csepregi R, Szolcsányi J, Helyes Z, Szőke É. Carboxamido steroids inhibit the opening properties of transient receptor potential ion channels by lipid raft modulation. J Lipid Res 2018; 59:1851-1863. [PMID: 30093524 PMCID: PMC6168298 DOI: 10.1194/jlr.m084723] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 08/03/2018] [Indexed: 11/20/2022] Open
Abstract
Transient Receptor Potential (TRP) cation channels, like the TRP Vanilloid 1 (TRPV1) and TRP Ankyrin 1 (TRPA1), are expressed on primary sensory neurons. These thermosensor channels play a role in pain processing. We have provided evidence previously that lipid raft disruption influenced the TRP channel activation, and a carboxamido-steroid compound (C1) inhibited TRPV1 activation. Therefore, our aim was to investigate whether this compound exerts its effect through lipid raft disruption and the steroid backbone (C3) or whether altered position of the carboxamido group (C2) influences the inhibitory action by measuring Ca2+ transients on isolated neurons and calcium-uptake on receptor-expressing CHO cells. Membrane cholesterol content was measured by filipin staining and membrane polarization by fluorescence spectroscopy. Both the percentage of responsive cells and the magnitude of the intracellular Ca2+ enhancement evoked by the TRPV1 agonist capsaicin were significantly inhibited after C1 and C2 incubation, but not after C3 administration. C1 was able to reduce other TRP channel activation as well. The compounds induced cholesterol depletion in CHO cells, but only C1 induced changes in membrane polarization. The inhibitory action of the compounds on TRP channel activation develops by lipid raft disruption, and the presence and the position of the carboxamido group is essential.
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Affiliation(s)
- Éva Sághy
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Maja Payrits
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Tünde Bíró-Sütő
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Rita Skoda-Földes
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - Eszter Szánti-Pintér
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - János Erostyák
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Experimental Physics, University of Pécs, Hungary
| | - Géza Makkai
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Experimental Physics, University of Pécs, Hungary
| | - György Sétáló
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Medical Biology, University of Pécs, Hungary
| | - László Kollár
- Department of Inorganic Chemistry and MTA-PTE Research Group for Selective Chemical Syntheses, University of Pécs, Hungary
| | - Tamás Kőszegi
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Laboratory Medicine, University of Pécs, Hungary
| | - Rita Csepregi
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Laboratory Medicine, University of Pécs, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,National Brain Research Program-2 Chronic Pain Research Group, Pécs, Hungary
| | - Éva Szőke
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary .,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,National Brain Research Program-2 Chronic Pain Research Group, Pécs, Hungary
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Moran MM, Szallasi A. Targeting nociceptive transient receptor potential channels to treat chronic pain: current state of the field. Br J Pharmacol 2018; 175:2185-2203. [PMID: 28924972 PMCID: PMC5980611 DOI: 10.1111/bph.14044] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 08/27/2017] [Accepted: 09/03/2017] [Indexed: 12/12/2022] Open
Abstract
Control of chronic pain is frequently inadequate and/or associated with intolerable adverse effects, prompting a frantic search for new therapeutics and new therapeutic targets. Nearly two decades of preclinical and clinical research supports the involvement of transient receptor potential (TRP) channels in temperature perception, nociception and sensitization. Although there has been considerable excitement around the therapeutic potential of this channel family since the cloning and identification of TRPV1 cation channels as the capsaicin receptor more than 20 years ago, only modulators of a few channels have been tested clinically. TRPV1 channel antagonists have suffered from side effects related to the channel's role in temperature sensation; however, high dose formulations of capsaicin have reached the market and shown therapeutic utility. A number of potent, small molecule antagonists of TRPA1 channels have recently advanced into clinical trials for the treatment of inflammatory and neuropathic pain, and TRPM8 antagonists are following closely behind for cold allodynia. TRPV3, TRPV4, TRPM2 and TRPM3 channels have also been of significant interest. This review discusses the preclinical promise and status of novel analgesic agents that target TRP channels and the challenges that these compounds may face in development and clinical practice. LINKED ARTICLES This article is part of a themed section on Recent Advances in Targeting Ion Channels to Treat Chronic Pain. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.12/issuetoc.
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Affiliation(s)
| | - Arpad Szallasi
- Clinical LaboratoriesBaptist Medical CenterJacksonvilleFLUSA
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53
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Díaz de León Zavala E, Torres Rodríguez LM, Montes-Rojas A, Torres Mendoza VH, Liñán González AE. Study of electrochemical determination of capsaicin and dihydrocapsaicin at carbon paste electrodes modified by β-cyclodextrin. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.02.055] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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54
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Utsumi D, Matsumoto K, Tsukahara T, Amagase K, Tominaga M, Kato S. Transient receptor potential vanilloid 1 and transient receptor potential ankyrin 1 contribute to the progression of colonic inflammation in dextran sulfate sodium-induced colitis in mice: Links to calcitonin gene-related peptide and substance P. J Pharmacol Sci 2018; 136:121-132. [DOI: 10.1016/j.jphs.2017.12.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 12/12/2017] [Accepted: 12/25/2017] [Indexed: 12/13/2022] Open
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55
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Güler S, Zik B. Effects of capsaicin on ovarian granulosa cell proliferation and apoptosis. Cell Tissue Res 2018; 372:603-609. [PMID: 29455258 DOI: 10.1007/s00441-018-2803-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/18/2018] [Indexed: 11/24/2022]
Abstract
Capsaicin is the pungent ingredient in red peppers. Due to the effects on the sensory nerve fibers, capsaicin has been used to treat pain and inflammation associated with a variety of diseases including rheumatoid arthritis and diabetic neuropathy, obesity, and cardiovascular and gastrointestinal conditions. Despite the extensive publications on different systems, the studies of the effects on the ovary are very limited. The present study was conducted to examine the possible proliferative and/or apoptotic effects of various doses of capsaicin on primarily derived granulosa cells. In accordance with this purpose, ovarian granulosa cells were exposed to different doses of capsaicin for 24 and 48 h. The proliferative effects of capsaicin were examined by immunocytochemistry, immunofluorescence, and western blot using an antibody against proliferating cell nuclear antigen (PCNA) and cell viability assay (MTT). The effects on apoptosis were determined by immunocytochemistry and immunofluorescence using antibodies against cleaved caspase-3 and cleaved poly (ADP-ribose) polymerase (PARP). We showed that the number of apoptotic cells increased in a capsaicin dose and time-dependent manners. We found that a low dose of CAP in 24 h administration was more effective on granulosa cell proliferation. Our results suggest that low-dose and short-term administration of CAP may have a positive effect on ovarian folliculogenesis.
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Affiliation(s)
- Sabire Güler
- Department of Histology Embryology, Faculty of Veterinary Medicine, Uludag University, 16059, Bursa, Turkey.
| | - Berrin Zik
- Department of Histology Embryology, Faculty of Veterinary Medicine, Uludag University, 16059, Bursa, Turkey
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56
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Suppressive effects of capsaicin against N-nitrosomethylurea-induced mammary tumorigenesis in rats. Biomed Pharmacother 2018; 98:673-679. [DOI: 10.1016/j.biopha.2017.12.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 12/09/2017] [Accepted: 12/13/2017] [Indexed: 11/17/2022] Open
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57
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Pinheiro RP, Moraes MA, Santos BCS, Fabri RL, Del-Vechio-Vieira G, Yamamoto CH, Araújo ALSM, Araújo ALA, Sousa OV. Identification of compounds from Palicourea rigida leaves with topical anti-inflammatory potential using experimental models. Inflammopharmacology 2017; 26:1005-1016. [PMID: 29138954 DOI: 10.1007/s10787-017-0415-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 10/28/2017] [Indexed: 01/12/2023]
Abstract
Palicourea rigida Kunth is traditionally used for the treatment of skin diseases, kidney pains and ovarian inflammation. Based on these traditional uses, this study evaluated the topical anti-inflammatory activity of the ethanol extract from P. rigida leaves (EEPR) and identified bioactive compounds. Ear edema was induced in Swiss mice by the topical application of Croton oil, arachidonic acid, phenol and capsaicin. Histopathological analysis and myeloperoxidase and N-acetyl-β-D-glucosaminidase activities were determined. EEPR was characterized by UHPLC-UV-MS HPLC and the isolated compound was identified through 1H and 13C nuclear magnetic resonance and mass fragmentation. Interaction profiles between quercetin 3-O-β-D-glucoside and cyclooxygenase-1 and -2 were established by molecular docking. EEPR significantly inhibited ear edema induced by Croton oil (p < 0.001), arachidonic acid (p < 0.01), phenol (p < 0.001) and capsaicin (p < 0.01 or p < 0.001). Histopathological analysis showed a reduction of edema, inflammatory cell infiltration and vasodilation. Additionally, the myeloperoxidase and N-acetyl-β-D-glucosaminidase activities were decreased (p < 0.001). From spectroscopic data, quercetin 3-O-β-D-glucoside was the identified compound. This compound can to interact with cyclooxygenase-1 and -2 through van der Waals interactions and dipole-dipole and hydrogen bonding's, demonstrating inhibition of these enzymes. The results indicate that EEPR is a source of active compounds with topical anti-inflammatory activity, justifying the traditional use of P. rigida and showing that this species has a therapeutic potential to treat skin inflammatory processes.
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Affiliation(s)
- Rafael P Pinheiro
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Muiara A Moraes
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Bruna C S Santos
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Rodrigo L Fabri
- Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Campus Universitário, Juiz de Fora, Minas Gerais, 36036-330, Brazil
| | - Glauciemar Del-Vechio-Vieira
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Célia H Yamamoto
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Ana Lúcia S M Araújo
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Aílson L A Araújo
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil
| | - Orlando V Sousa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Campus Universitário, São Pedro, Minas Gerais, 36036-900, Brazil.
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58
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Richards JR, Lapoint JM, Burillo-Putze G. Cannabinoid hyperemesis syndrome: potential mechanisms for the benefit of capsaicin and hot water hydrotherapy in treatment. Clin Toxicol (Phila) 2017; 56:15-24. [DOI: 10.1080/15563650.2017.1349910] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- John R. Richards
- Department of Emergency Medicine, University of California Davis Medical Center, Sacramento, CA, USA
| | - Jeff M. Lapoint
- Department of Emergency Medicine, Southern California Permanente Medical Group, San Diego, CA, USA
| | - Guillermo Burillo-Putze
- Área de Toxicología Clínica, Servicio de Urgencias, Universidad Europea de Canarias, Tenerife, Spain
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59
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Popelka P, Jevinová P, Šmejkal K, Roba P. Determination of Capsaicin Content and Pungency Level of Different Fresh and Dried Chilli Peppers. FOLIA VETERINARIA 2017. [DOI: 10.1515/fv-2017-0012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
One of the traditional plants that have so many pharmacological effects is chilli fruit (Capsicum sp.) that belong to the family Solanaceae. Around the world, five varieties of Capsicum are known, i. e., C. annuum, C. frutescens, C. chinense, C. baccatum, and C. pubescens. Chilli peppers are known for causing the sensation of heat or burning when consumed. The heat sensation is incited by the type and the amount of a group of capsaicinoids; the alkaloids found only in chilli pepper pods. A widely used heat measurement of chilli peppers is the SHU (Scoville Heating Unit). This measurement is the highest dilution of a chilli pepper extract at which heat can be detected by a taste panel. Nowadays, the Scoville organoleptic test has been largely replaced by chromatographic methods which are considered to be more reliable and accurate. The HPLC (High Pressure Liquid Chromatography) method was used for the determination of capsaicin content in various fresh and dried peppers from the genera C. chinense. Currently, based on the results of HPLC, the hottest pepper has been Bhut Jolokia, followed by Habanero Red Savina and Habanero Yellow etc. The content of capsaicin in dried chillies is 7-10 times higher compared to fresh ones.
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Affiliation(s)
- P. Popelka
- University of Veterinary Medicine and Pharmacy in Košice, Košice , Slovakia
| | - P. Jevinová
- University of Veterinary Medicine and Pharmacy in Košice, Košice , Slovakia
| | - K. Šmejkal
- University of Veterinary and Pharmaceutical Sciences in Brno, Brno , Czechia
| | - P. Roba
- University of Veterinary Medicine and Pharmacy in Košice, Košice , Slovakia
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60
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Nilsson D, Jennische E, Cavallini N, Braide M. TRPA1 Mechanoreceptors Mediate the IL-6 Response to a Single PD Dwell in the Rat. Perit Dial Int 2017; 37:509-515. [PMID: 28698251 DOI: 10.3747/pdi.2016.00290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 04/03/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND The development of modern, biocompatible peritoneal dialysis (PD) fluids has not entirely eliminated the local pro-inflammatory effects of PD fluid administration. The present study was performed in order to establish the importance of known signaling pathways connected to mechano-, osmo- and chemo-sensors of the transient receptor potential (TRP) family for the acute inflammatory response to PD. METHODS Rats were exposed to a single 4-hour dwell of lactate-buffered, 2.5% glucose, filter-sterilized PD fluid through an implanted PD catheter. In some groups, the PD dwell was preceded by intravenous administration of blockers of TRPV1 (BCTC), TRPA1 (HC030031), or neurokinin 1 (NK1) (Spantide II) receptors. Cytokine messenger ribonucleic acid (mRNA) expressions were quantified in tissue biopsies (real-time polymerase chain reaction [qPCR]), and cytokine concentrations were quantified in dialysate samples by enzyme-linked immunosorbent assay (ELISA). Tissue expressions of TRPV1, TRPA1, and NK1 were evaluated immuno-histochemically. RESULTS The PD dwell induced peritoneal synthesis of Il1b, Tnf, and Il6 and a secretion of interleukin-6 (IL-6) into the dialysate. The catheter implantation already induced the transcription of Il1b and Tnf but did not significantly affect Il6 transcription. The Il6 response to the PD dwell could be virtually eliminated by blocking TRPA1 but was not affected by TRPV1 blockade. Blocking the substance P receptor, NK1, produced an insignificant trend towards Il6 inhibition. TRPA1 and NK1 showed a stronger immuno-reactivity than TRPV1 on cells of the peritoneal tissue. CONCLUSION The results show that IL-6 synthesis and secretion were connected to acute PD fluid exposure, and this response was triggered by TRPA1 receptors, possibly located to non-neuronal cells.
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Affiliation(s)
- Daniel Nilsson
- Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eva Jennische
- Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Nicola Cavallini
- BD Biosciences, Beckton, Dickinson and Company, Stockholm, Sweden
| | - Magnus Braide
- Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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61
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Association between spicy food consumption and lipid profiles in adults: a nationwide population-based study. Br J Nutr 2017; 118:144-153. [PMID: 28673367 DOI: 10.1017/s000711451700157x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CVD remains the leading cause of mortality worldwide, with abnormal lipid metabolism as a major risk factor. The aim of this study was to investigate associations between spicy food consumption and serum lipids in Chinese adults. Data were extracted from the 2009 phase of the China Health and Nutrition Survey, consisting of 6774 apparently healthy Chinese adults aged 18-65 years. The frequency of consumption and degree of pungency of spicy food were self-reported, and regular spicy food consumption was assessed using three consecutive 24-h recalls. Total cholesterol, TAG, LDL-cholesterol and HDL-cholesterol in fasting serum were measured. Multilevel mixed-effects models were constructed to estimate associations between spicy food consumption and serum lipid profiles. The results showed that the frequency and the average amount of spicy food intake were both inversely associated with LDL-cholesterol and LDL-cholesterol:HDL-cholesterol ratio (all P for trend<0·05) after adjustment for potential confounders and cluster effects. HDL-cholesterol in participants who usually consumed spicy food (≥5 times/week) and who consumed spicy food perceived as moderate in pungency were significantly higher than those who did not (both P<0·01). The frequency and the average amount of spicy food intake and the degree of pungency in spicy food were positively associated with TAG (all P for trend<0·05). Spicy food consumption was inversely associated with serum cholesterol and positively associated with serum TAG, and additional studies are needed to confirm the findings as well as to elucidate the potential roles of spicy food consumption in lipid metabolism.
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62
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Bonior J, Warzecha Z, Ceranowicz P, Gajdosz R, Pierzchalski P, Kot M, Leja-Szpak A, Nawrot-Porąbka K, Link-Lenczowski P, Pędziwiatr M, Olszanecki R, Bartuś K, Trąbka R, Kuśnierz-Cabala B, Dembiński A, Jaworek J. Capsaicin-Sensitive Sensory Nerves Are Necessary for the Protective Effect of Ghrelin in Cerulein-Induced Acute Pancreatitis in Rats. Int J Mol Sci 2017; 18:E1402. [PMID: 28665321 PMCID: PMC5535895 DOI: 10.3390/ijms18071402] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 06/25/2017] [Accepted: 06/27/2017] [Indexed: 12/11/2022] Open
Abstract
Ghrelin was shown to exhibit protective and therapeutic effect in the gut. Aim of the study was to investigate the role of sensory nerves (SN) in the protective effect of ghrelin in acute pancreatitis (AP). Studies were performed on male Wistar rats or isolated pancreatic acinar cells. After capsaicin deactivation of sensory nerves (CDSN) or treatment with saline, rats were pretreated intraperitoneally with ghrelin or saline. In those rats, AP was induced by cerulein or pancreases were used for isolation of pancreatic acinar cells. Pancreatic acinar cells were incubated in cerulein-free or cerulein containing solution. In rats with intact SN, pretreatment with ghrelin led to a reversal of the cerulein-induced increase in pancreatic weight, plasma activity of lipase and plasma concentration of tumor necrosis factor-α (TNF-α). These effects were associated with an increase in plasma interleukin-4 concentration and reduction in histological signs of pancreatic damage. CDSN tended to increase the severity of AP and abolished the protective effect of ghrelin. Exposure of pancreatic acinar cells to cerulein led to increase in cellular expression of mRNA for TNF-α and cellular synthesis of this cytokine. Pretreatment with ghrelin reduced this alteration, but this effect was only observed in acinar cells obtained from rats with intact SN. Moreover, CDSN inhibited the cerulein- and ghrelin-induced increase in gene expression and synthesis of heat shock protein 70 (HSP70) in those cells. Ghrelin exhibits the protective effect in cerulein-induced AP on the organ and pancreatic acinar cell level. Sensory nerves ablation abolishes this effect.
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Affiliation(s)
- Joanna Bonior
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Zygmunt Warzecha
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegórzecka St., 31-531 Krakow, Poland.
| | - Piotr Ceranowicz
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegórzecka St., 31-531 Krakow, Poland.
| | - Ryszard Gajdosz
- Department of Emergency Medical Care, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Piotr Pierzchalski
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Michalina Kot
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Anna Leja-Szpak
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Katarzyna Nawrot-Porąbka
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Paweł Link-Lenczowski
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
| | - Michał Pędziwiatr
- 2nd Department of Surgery, Faculty of Medicine, Jagiellonian University Medical College, 21 Kopernika St., 31-501 Krakow, Poland.
| | - Rafał Olszanecki
- Department of Pharmacology, Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegórzecka St., 31-531 Krakow, Poland.
| | - Krzysztof Bartuś
- Department of Cardiovascular Surgery and Transplantology, Faculty of Medicine, Jagiellonian University, JP II Hospital, 80 Prądnicka St., 31-202 Krakow, Poland.
| | - Rafał Trąbka
- Department of Rehabilitation, Faculty of Health Sciences, Jagiellonian University Medical College, 3 Koło Strzelnicy St., 30-219 Krakow, Poland.
| | - Beata Kuśnierz-Cabala
- Department of Diagnostics, Chair of Clinical Biochemistry, Faculty of Medicine Jagiellonian University Medical College, 15 A Kopernika St., 31-501 Krakow, Poland.
| | - Artur Dembiński
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegórzecka St., 31-531 Krakow, Poland.
| | - Jolanta Jaworek
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 12 Michałowskiego St., 31-126 Krakow, Poland.
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63
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Popelka P, Jevinová P, Šmejkal K, Roba P. Antibacterial activity of Capsicum extract against selected strains of bacteria and micromycetes. POTRAVINARSTVO 2017. [DOI: 10.5219/731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
One of traditional plant that has so many pharmacology effects is chilli fruit (Capsicum sp.) that belong to the family Solanaceae. Around the world is known five varieties of Capsicum which are C. annuum, C. frutescens, C. chinense, C. baccatum, and C. pubescens. Chilli peppers are known for causing the sensation of heat or burning when consumed. The heat sensation is incited by the type and the amount of a group of capsaicinoids, the alkaloids found only in chilli pepper pods. The HPLC method was used for determination of capsaicin and dihydrocapsaicin content in various dried peppers from genera C. chinense. Based on the results of HPLC the hottest pepper has been Bhut Jolokia, followed by Habanero Red Savina, Fatalii Yellow, Habanero Paper Latern, Habanero Maya Red, Habanero Red, and Scotch Bonnet Red. The inhibitory effect of the extract of Capsicum chinense pepper type was evaluated, using dics diffusion method, against selected bacteria and micromycetes. Extracts from Bhut Jolokia, Fatalii Yellow, Scotch Bonnet Red and habaneros did not inhibit growth of the any bacteria and micromycetes included in our test.
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64
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Geraldo VP, Ziglio AC, Gonçalves D, Oliveira ON. Interaction of capsaicinoids with cell membrane models does not correlate with pungency of peppers. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.02.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baskaran M, Baskaran P, Arulsamy N, Thyagarajan B. Preparation and Evaluation of PLGA-Coated Capsaicin Magnetic Nanoparticles. Pharm Res 2017; 34:1255-1263. [DOI: 10.1007/s11095-017-2142-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 03/09/2017] [Indexed: 01/15/2023]
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66
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Aghazadeh Tabrizi M, Baraldi PG, Baraldi S, Gessi S, Merighi S, Borea PA. Medicinal Chemistry, Pharmacology, and Clinical Implications of TRPV1 Receptor Antagonists. Med Res Rev 2016; 37:936-983. [PMID: 27976413 DOI: 10.1002/med.21427] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 10/24/2016] [Accepted: 11/01/2016] [Indexed: 12/28/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is an ion channel expressed on sensory neurons triggering an influx of cations. TRPV1 receptors function as homotetramers responsive to heat, proinflammatory substances, lipoxygenase products, resiniferatoxin, endocannabinoids, protons, and peptide toxins. Its phosphorylation increases sensitivity to both chemical and thermal stimuli, while desensitization involves a calcium-dependent mechanism resulting in receptor dephosphorylation. TRPV1 functions as a sensor of noxious stimuli and may represent a target to avoid pain and injury. TRPV1 activation has been associated to chronic inflammatory pain and peripheral neuropathy. Its expression is also detected in nonneuronal areas such as bladder, lungs, and cochlea where TRPV1 activation is responsible for pathology development of cystitis, asthma, and hearing loss. This review offers a comprehensive overview about TRPV1 receptor in the pathophysiology of chronic pain, epilepsy, cough, bladder disorders, diabetes, obesity, and hearing loss, highlighting how drug development targeting this channel could have a clinical therapeutic potential. Furthermore, it summarizes the advances of medicinal chemistry research leading to the identification of highly selective TRPV1 antagonists and their analysis of structure-activity relationships (SARs) focusing on new strategies to target this channel.
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Affiliation(s)
- Mojgan Aghazadeh Tabrizi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Pier Giovanni Baraldi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Baraldi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Gessi
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Merighi
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Pier Andrea Borea
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
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Rodrigues KCM, Chibli LA, Santos BCS, Temponi VS, Pinto NCC, Scio E, Del-Vechio-Vieira G, Alves MS, Sousa OV. Evidence of Bioactive Compounds from Vernonia polyanthes Leaves with Topical Anti-Inflammatory Potential. Int J Mol Sci 2016; 17:ijms17121929. [PMID: 27916942 PMCID: PMC5187762 DOI: 10.3390/ijms17121929] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/22/2016] [Accepted: 11/08/2016] [Indexed: 01/30/2023] Open
Abstract
Vernonia polyanthes Less. (Asteraceae), popularly known as "assa-peixe", is a plant species used in Brazilian traditional medicine for the treatment of cutaneous damage, cicatrization, inflammation, and rheumatism. Based on these ethnopharmacological findings, the current study evaluated the topical anti-inflammatory effects of the hexane (HEVP) and ethyl acetate (EAEVP) extracts from V. polyanthes leaves in experimental models of skin inflammation. Chemical characterization was carried out by HPLC-UV/DAD analysis. Anti-inflammatory activity was evaluated using Croton oil-, arachidonic acid (AA)-, phenol-, ethyl phenylpropiolate (EPP)-, and capsaicin-induced ear edema models in mice. Histopathological evaluation and measurements of myeloperoxidase (MPO) and N-acetyl-β-d-glucosaminidase (NAG) enzymes were also performed. Rutin, luteolin, and apigenin were identified in EAEVP. Topically applied HEVP and EAEVP significantly (p < 0.05, p < 0.01 or p < 0.001) reduced edema induced by five different irritants at the doses tested (0.1, 0.5 and 1.0 mg/ear). Histopathological analysis revealed a reduction of edema, inflammatory cell infiltration, and vasodilation. In addition, the enzymes activity (MPO and NAG) in the ear tissues was reduced by the topical treatment of HEVP and EAEVP (p < 0.05, p < 0.01 or p < 0.001). The results suggest that V. polyanthes leaves are effective against cutaneous damage, which support its traditional use and open up new possibilities for the treatment of skin disorders.
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Affiliation(s)
- Kamilla C M Rodrigues
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Lucas A Chibli
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Bruna C S Santos
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Vanessa S Temponi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Nícolas C C Pinto
- Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Elita Scio
- Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Glauciemar Del-Vechio-Vieira
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Maria S Alves
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| | - Orlando V Sousa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, Minas Gerais 36036-900, Brazil.
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68
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Kun J, Perkecz A, Knie L, Sétáló G, Tornóczki T, Pintér E, Bán Á. TRPA1 receptor is upregulated in human oral lichen planus. Oral Dis 2016; 23:189-198. [PMID: 27718297 DOI: 10.1111/odi.12593] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/14/2016] [Accepted: 10/04/2016] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Oral lichen planus (OLP) is a chronic inflammatory disease of unknown etiology with antigen-specific and non-specific mechanisms. Transient receptor potential ankyrin 1 (TRPA1) is a non-selective cation channel activated by noxious stimuli such as oxidative stress products evoking pain and release of proinflammatory mediators from sensory nerve endings culminating in neurogenic inflammation. Extraneuronal TRPA1s, for example, on immune cells possess yet unknown functions. SUBJECTS AND METHODS We studied the buccal mRNA expression (qPCR) and protein localization (immunohistochemistry) of TRPA1 receptors and key OLP mediator transcripts in oral mucosa samples of healthy volunteers (n = 9), OLP patients (n = 43), and OLP-like hyperkeratotic patients (n = 12). RESULTS We measured 27.7- and 25.5-fold TRPA1 mRNA increase in OLP and OLP-like hyperkeratotic patients compared to healthy controls. TRPA1 transcripts elevated 2.4-fold in hypertensive OLP but not in hyperkeratotic patients compared to counterparts, reduced by 1.6-fold by angiotensin-convertase inhibitor intake. TRPA1 messenger RNA was more coexpressed with transcripts of tumor necrosis factor α than with interferon γ. Keratinocytes, macrophages but not T cells expressed TRPA1. CONCLUSIONS We provided evidence for the extraneuronal presence and upregulation of the proinflammatory TRPA1 receptor in buccal samples of patients with OLP. This may implicate the ion channel in the pathomechanism of OLP.
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Affiliation(s)
- J Kun
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary.,Molecular Pharmacology Group, Szentágothai Research Center, University of Pecs, Pécs, Hungary.,MTA-PTE NAP B Chronic Pain Research Group, University of Pécs, Pécs, Hungary
| | - A Perkecz
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary
| | - L Knie
- Department of Dentistry, Oral and Maxillofacial Surgery, University of Pécs Medical School, Pécs, Hungary
| | - G Sétáló
- Department of Medical Biology, University of Pécs Medical School, Pécs, Hungary
| | - T Tornóczki
- Oral Pathology Unit, Department of Pathology, University of Pécs Medical School, Hungary
| | - E Pintér
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary.,Molecular Pharmacology Group, Szentágothai Research Center, University of Pecs, Pécs, Hungary
| | - Á Bán
- Department of Dentistry, Oral and Maxillofacial Surgery, University of Pécs Medical School, Pécs, Hungary
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69
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Age-dependent impact of inferior alveolar nerve transection on mandibular bone metabolism and the underlying mechanisms. J Mol Histol 2016; 47:579-586. [PMID: 27681986 DOI: 10.1007/s10735-016-9697-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/13/2016] [Indexed: 02/05/2023]
Abstract
Aging is associated with peripheral nerve degradation and bone destruction. The aim of the study is to elucidate the influence of sensory denervation on bone metabolism in different age groups by establishing a modified unilateral inferior alveolar nerve transection (IANT) model. The rats, divided into young, middle-aged and aged group, were sacrificed at 1, 2, 4 and 8 weeks after right IANT. The histological changes of mandibles were analyzed by fluorescent double labeling, micro-CT, HE, TRAP and anti-CGRP immunohistochemical staining. Molecular mechanisms underlying the changes were analyzed by qPCR and western blot. Differences between the test and control side were evaluated by paired-samples t test. The Friedman test and separate Wilcoxon signed-rank tests were applied to analyze age-dependent difference. The impact of IANT was the most intensive in developing bone, the most persistent in full grown bone and the faintest in the aged bone. The role of IAN in keeping homeostasis was closely related to the anabolic effect of CGRP, which suppressed the number of osteoclasts through OPG/RANKL ratio and controlled growth factors expression like BMP2. This study contributes to a better understanding of the molecular mechanisms of CGRP in vivo and the relationship among sensory nerve, bone metabolism and aging.
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70
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Botz B, Bölcskei K, Helyes Z. Challenges to develop novel anti-inflammatory and analgesic drugs. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 9. [PMID: 27576790 DOI: 10.1002/wnan.1427] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/21/2016] [Accepted: 07/30/2016] [Indexed: 12/11/2022]
Abstract
Chronic inflammatory diseases and persistent pain of different origin represent common medical, social, and economic burden, and their pharmacotherapy is still an unresolved issue. Therefore, there is a great and urgent need to develop anti-inflammatory and analgesic agents with novel mechanisms of action, but it is a very challenging task. The main problem is the relatively large translational gap between the preclinical experimental data and the clinical results due to characteristics of the models, difficulties with the investigational techniques particularly for pain, as well as species differences in the mechanisms. We summarize here the current state-of-the-art medication and related ongoing strategies, and the novel targets with lead molecules under clinical development. The first members of the gold-standard categories, such as nonsteroidal anti-inflammatory drugs, glucocorticoids, and opioids, were introduced decades ago, and since then very few drugs with novel mechanisms of action have been successfully taken to the clinics despite considerable development efforts. Several biologics targeting different key molecules have provided breakthrough in some autoimmune/inflammatory diseases, but they are expensive, only parenterally available, their long-term side effects often limit their administration, and they do not effectively reduce pain. Some kinase inhibitors and phosphodiesterase-4 blockers have recently been introduced as new directions. There are in fact some promising novel approaches at different clinical stages of drug development focusing on transient receptor potential vanilloid 1/ankyrin 1 channel antagonism, inhibition of voltage-gated sodium/calcium channels, several enzymes (kinases, semicarbazide-sensitive amine oxidases, and matrix metalloproteinases), cytokines/chemokines, transcription factors, nerve growth factor, and modulation of several G protein-coupled receptors (cannabinoids, purinoceptors, and neuropeptides). WIREs Nanomed Nanobiotechnol 2017, 9:e1427. doi: 10.1002/wnan.1427 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Bálint Botz
- Department of Radiology, Faculty of Medicine, University of Pécs, Pécs, Hungary.,János Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Kata Bölcskei
- János Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs, Hungary
| | - Zsuzsanna Helyes
- János Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs, Hungary.,MTA-PTE NAP B Chronic Pain Research Group, Faculty of Medicine, University of Pécs, Pécs, Hungary
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71
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Basith S, Cui M, Hong S, Choi S. Harnessing the Therapeutic Potential of Capsaicin and Its Analogues in Pain and Other Diseases. Molecules 2016; 21:molecules21080966. [PMID: 27455231 PMCID: PMC6272969 DOI: 10.3390/molecules21080966] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/27/2016] [Accepted: 07/15/2016] [Indexed: 12/14/2022] Open
Abstract
Capsaicin is the most predominant and naturally occurring alkamide found in Capsicum fruits. Since its discovery in the 19th century, the therapeutic roles of capsaicin have been well characterized. The potential applications of capsaicin range from food flavorings to therapeutics. Indeed, capsaicin and few of its analogues have featured in clinical research covered by more than a thousand patents. Previous records suggest pleiotropic pharmacological activities of capsaicin such as an analgesic, anti-obesity, anti-pruritic, anti-inflammatory, anti-apoptotic, anti-cancer, anti-oxidant, and neuro-protective functions. Moreover, emerging data indicate its clinical significance in treating vascular-related diseases, metabolic syndrome, and gastro-protective effects. The dearth of potent drugs for management of such disorders necessitates the urge for further research into the pharmacological aspects of capsaicin. This review summarizes the historical background, source, structure and analogues of capsaicin, and capsaicin-triggered TRPV1 signaling and desensitization processes. In particular, we will focus on the therapeutic roles of capsaicin and its analogues in both normal and pathophysiological conditions.
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Affiliation(s)
- Shaherin Basith
- National Leading Research Laboratory (NLRL) of Molecular Modeling & Drug Design, College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea.
| | - Minghua Cui
- National Leading Research Laboratory (NLRL) of Molecular Modeling & Drug Design, College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea.
| | - Sunhye Hong
- National Leading Research Laboratory (NLRL) of Molecular Modeling & Drug Design, College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea.
| | - Sun Choi
- National Leading Research Laboratory (NLRL) of Molecular Modeling & Drug Design, College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea.
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Hetényi A, Németh L, Wéber E, Szakonyi G, Winter Z, Jósvay K, Bartus É, Oláh Z, Martinek TA. Competitive inhibition of TRPV1-calmodulin interaction by vanilloids. FEBS Lett 2016; 590:2768-75. [PMID: 27339229 DOI: 10.1002/1873-3468.12267] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/19/2016] [Accepted: 06/20/2016] [Indexed: 11/10/2022]
Abstract
There is enormous interest toward vanilloid agonists of the pain receptor TRPV1 in analgesic therapy, but the mechanisms of their sensory neuron-blocking effects at high or repeated doses are still a matter of debate. Our results have demonstrated that capsaicin and resiniferatoxin form nanomolar complexes with calmodulin, and competitively inhibit TRPV1-calmodulin interaction. These interactions involve the protein recognition interface of calmodulin, which is responsible for all of the cell-regulatory calmodulin-protein interactions. These results draw attention to a previously unknown vanilloid target, which may contribute to the explanation of the paradoxical pain-modulating behavior of these important pharmacons.
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Affiliation(s)
| | - Lukács Németh
- SZTE-MTA Lendület Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Edit Wéber
- SZTE-MTA Lendület Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Gerda Szakonyi
- Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Zoltán Winter
- Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Katalin Jósvay
- Institute of Pharmaceutical Analysis, University of Szeged, Hungary.,Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Éva Bartus
- SZTE-MTA Lendület Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Zoltán Oláh
- Institute of Pharmaceutical Analysis, University of Szeged, Hungary
| | - Tamás A Martinek
- SZTE-MTA Lendület Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Hungary.,Institute of Pharmaceutical Analysis, University of Szeged, Hungary
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Abstract
PURPOSE OF REVIEW To provide an overview on drug targets and emerging pharmacological treatment options for chronic pain. RECENT FINDINGS Chronic pain poses an enormous socioeconomic burden for the more than 30% of people who suffer from it, costing over $600 billion per year in the USA. In recent years, there has been a surge in preclinical and clinical research endeavors to try to stem this epidemic. Preclinical studies have identified a wide array of potential targets, with some of the most promising translational research being performed on novel opioid receptors, cannabinoid receptors, selective ion channel blockers, cytokine inhibitors, nerve growth factor inhibitors, N-methyl-D-aspartate receptor antagonists, glial cell inhibitors, and bisphosphonates. SUMMARY There are many obstacles for the development of effective medications to treat chronic pain, including the inherent challenges in identifying pathophysiological mechanisms, the overlap and multiplicity of pain pathways, and off-target adverse effects stemming from the ubiquity of drug target receptor sites and the lack of highly selective receptor ligands. Despite these barriers, the number and diversity of potential therapies have continued to grow, to include disease-modifying and individualized drug treatments.
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Identification of a Potential Target of Capsaicin by Computational Target Fishing. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:983951. [PMID: 26770256 PMCID: PMC4681817 DOI: 10.1155/2015/983951] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 12/29/2022]
Abstract
Capsaicin, the component responsible for the pungency of chili peppers, shows beneficial effects in many diseases, although the underlying mechanisms remain unclear. In the present study, the potential targets of capsaicin were predicted using PharmMapper and confirmed via chemical-protein interactome (CPI) and molecular docking. Carbonic anhydrase 2 was identified as the main disease-related target, with the pharmacophore model matching well with the molecular features of capsaicin. The relation was confirmed by CPI and molecular docking and supported by previous research showing that capsaicin is a potent inhibitor of carbonic anhydrase isoenzymes. The present study provides a basis for understanding the mechanisms of action of capsaicin or those of other natural compounds.
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Klotz S, Pallavi P, Tsagogiorgas C, Zimmer F, Zöllner FG, Binzen U, Greffrath W, Treede RD, Walter J, Harmsen MC, Krämer BK, Hafner M, Yard BA, Hoeger S. N-octanoyl dopamine treatment exerts renoprotective properties in acute kidney injury but not in renal allograft recipients. Nephrol Dial Transplant 2015; 31:564-73. [DOI: 10.1093/ndt/gfv363] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 09/17/2015] [Indexed: 12/26/2022] Open
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Sághy É, Szőke É, Payrits M, Helyes Z, Börzsei R, Erostyák J, Jánosi TZ, Sétáló Jr G, Szolcsányi J. Evidence for the role of lipid rafts and sphingomyelin in Ca2+-gating of Transient Receptor Potential channels in trigeminal sensory neurons and peripheral nerve terminals. Pharmacol Res 2015; 100:101-16. [DOI: 10.1016/j.phrs.2015.07.028] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 07/27/2015] [Accepted: 07/28/2015] [Indexed: 10/23/2022]
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77
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Pinto NDCC, Machado DC, da Silva JM, Conegundes JLM, Gualberto ACM, Gameiro J, Moreira Chedier L, Castañon MCMN, Scio E. Pereskia aculeata Miller leaves present in vivo topical anti-inflammatory activity in models of acute and chronic dermatitis. JOURNAL OF ETHNOPHARMACOLOGY 2015; 173:330-337. [PMID: 26226436 DOI: 10.1016/j.jep.2015.07.032] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 07/21/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Pereskia aculeata Miller (Cactaceae), known as Barbados gooseberry, are used in Brazilian traditional medicine as emollients and to treat skin wounds and inflammation. This study investigated the topical anti-inflammatory activity of the hexane fraction (HF) obtained from the methanol extract of the leaves of this species in models of acute and chronic ear dermatitis in mice. MATERIAL AND METHODS Mice ear edema was induced by topical application of croton oil, arachidonic acid, capsaicin, ethyl-phenylpropiolate and phenol; and by subcutaneous injection of histamine. Ear biopsies were obtained to determine the levels of IL-1β, IL-6 and TNF-α cytokines by ELISA assay. Histopathological analysis was also performed to evaluate the HF activity in croton oil multiple application test. In addition, acute dermal irritation/corrosion test in rats was accomplished. HF chemical characterization was performed by GC-MS analysis. RESULTS HF intensively reduced the inflammatory process induced by all irritant agents used, except for arachidonic acid. This activity is related, at least in part, to the reduction of IL-6 and TNF-α cytokines levels. Moreover, when the glucocorticoid receptor antagonist mifepristone was used, HF failed to respond to the croton oil application.The results strongly suggested a glucocorticoid-like effect, which was reinforced by the presence of considerable amounts of sterol compounds identified in HF. The acute dermal irritaton/corrosion test showed no signs of toxicity. CONCLUSIONS This study showed that the acute and chronic anti-inflammatory activity of P. aculeata leaves is very promising, and corroborates to better understand their ethnopharmacological applications.
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Affiliation(s)
- Nícolas de Castro Campos Pinto
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Danielle Cunha Machado
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Josiane Mello da Silva
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Jéssica Leiras Mota Conegundes
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Ana Cristina Moura Gualberto
- Department of Parasitology, Microbiology and Immunology, Biological Sciences Institute, Federal University of Juiz de Fora, 36036 900, Juiz de Fora, MG, Brazil
| | - Jacy Gameiro
- Department of Parasitology, Microbiology and Immunology, Biological Sciences Institute, Federal University of Juiz de Fora, 36036 900, Juiz de Fora, MG, Brazil
| | - Luciana Moreira Chedier
- Department of Botany, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | | | - Elita Scio
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil.
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Thinschmidt JS, King MA, Korah M, Perez PD, Febo M, Miyan J, Grant MB. Central neural activation following contact sensitivity peripheral immune challenge: evidence of brain-immune regulation through C fibres. Immunology 2015; 146:206-16. [PMID: 25967648 DOI: 10.1111/imm.12479] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/01/2015] [Accepted: 05/07/2015] [Indexed: 01/03/2023] Open
Abstract
This study tested the hypothesis that peripheral immune challenges will produce predictable activation patterns in the rat brain consistent with sympathetic excitation. As part of examining this hypothesis, this study asked whether central activation is dependent on capsaicin-sensitive C-fibres. We induced skin contact sensitivity immune responses with 2,4-dinitrochlorobenzene (DNCB), in the presence or absence of the acute C-fibre toxin capsaicin (8-methyl-N-vanillyl-6-nonenamide) to trigger immune responses with and without diminished activity of C-fibres. Innovative blood-oxygen-level-dependent functional magnetic resonance imaging data revealed that the skin contact sensitivity immune responses induced with DNCB were associated with localized increases in brain neuronal activity in treated rats. This response was diminished by pre-treatment with capsaicin 1 week before scans. In the same animals, we found expression of the immediate early gene c-Fos in sub-regions of the amygdala and hypothalamic sympathetic brain nuclei. Significant increases in c-Fos expression were found in the supraoptic nucleus, central amygdala and medial habenula following immune challenges. Our results support the idea that selective brain regions, some of which are associated with sympathetic function, process or modulate immune function through pathways that are partially dependent on C-fibres. Together with previous studies demonstrating the motor control pathways from brain to immune targets, these findings indicate a central neuroimmune system to monitor host status and coordinate appropriate host responses.
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Affiliation(s)
- Jeffrey S Thinschmidt
- Department of Pharmacology and Therapeutics, University of Florida & North Florida/South Georgia VA Medical Center, Gainesville, FL, USA
| | - Michael A King
- Department of Pharmacology and Therapeutics, University of Florida & North Florida/South Georgia VA Medical Center, Gainesville, FL, USA
| | - Maria Korah
- Department of Pharmacology and Therapeutics, University of Florida & North Florida/South Georgia VA Medical Center, Gainesville, FL, USA
| | - Pablo D Perez
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Marcelo Febo
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Jaleel Miyan
- Neurobiology Research Group, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | - Maria B Grant
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN, USA
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Activation of neuroimmune pathways increases therapeutic effects of radiotherapy on poorly differentiated breast carcinoma. Brain Behav Immun 2015; 48:174-85. [PMID: 25736062 DOI: 10.1016/j.bbi.2015.02.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/13/2015] [Accepted: 02/23/2015] [Indexed: 12/11/2022] Open
Abstract
Recent studies document the importance of neuronal dysfunction in cancer development and metastasis. We reported previously that both depletion of neuropeptides in capsaicin-sensitive sensory nerve endings and vagotomy increases metastasis of triple negative breast carcinoma. Of the sensory neuropeptides, Substance P (SP) is distributed widely for regulation of immune functions. We therefore examined the affects of continuous exposure to low doses of SP on brain metastatic cells of the mouse breast carcinoma (4TBM) in the presence of radiotherapy (RT) thought to increase antigenicity of cancer cells. 4TBM cells have a cancer stem cell phenotype and induce extensive visceral metastasis after orthotopic inoculation into the mammary pad. Results demonstrated that SP treatment decreases the number of tumor-infiltrating myeloid-derived suppressor cells as well as the TNF-α response to LPS challenge. SP also increased CD4+Cd25(bright) cells in draining lymph nodes of tumor-bearing animals and IFN-γ secretion from leukocyte culture prepared from lymph nodes and spleens of tumor-bearing animals. SP also prevented tumor-induced degeneration of sensory nerve endings and altered release of angiogenic factors from cancer-associated fibroblasts (CAF) and tumor explants. In accordance with these observed immunological effects, combination treatment of continuous SP with a single dose of RT induced complete tumor regression and significantly reduced or prevented metastasis in 50% of the animals while suppressing primary tumor growth and metastasis in the remaining mice. These original findings demonstrate that SP through neuroimmune modulation can prevent formation of immune suppression in the tumor microenvironment, enhance cytotoxic immunity in the presence of RT and prevent metastatic growth.
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Abstract
Cutaneous current-induced vasodilation (CIV) in response to galvanic current application is an integrative model of neurovascular interaction that relies on capsaicin-sensitive fiber activation. The upstream and downstream mechanisms related to the activation of the capsaicin-sensitive fibers involved in CIV are not elucidated. In particular, the activation of cutaneous transient receptor potential vanilloid type-1 (TRPV1) channels and/or acid-sensing ion channels (ASIC) (activators mechanisms) and the release of calcitonin gene-related peptide (CGRP) and substance P (SP) (effector mechanisms) have been tested. To assess cathodal CIV, we measured cutaneous blood flow using laser Doppler flowmetry for 20min following cathodal current application (240s, 100μA) on the skin of the thigh in anesthetized healthy rats for 20min. CIV was studied in rats treated with capsazepine and amiloride to inhibit TRPV1 and ASIC channels, respectively; CGRP8-37 and SR140333 to antagonize CGRP and neurokinin-1 (NK1) receptors, respectively; compared to their respective controls. Cathodal CIV was attenuated by capsazepine (12±2% vs 54±6%, P<0.001), amiloride (19±8% vs 61±6%, P<0.01), CGRP8-37 (15±6% vs 61±6%, P<0.001) and SR140333 (9±5% vs 54±6%, P<0.001) without changing local acidification. This is the first integrative study performed in healthy rats showing that cutaneous vasodilation in response to cathodal stimulation is initiated by activation of cutaneous TRPV1 and ASIC channels likely through local acidification. The involvement of CGRP and NK1 receptors suggests that cathodal CIV is the result of CGRP and SP released through activated capsaicin-sensitive fibers. Therefore cathodal CIV could be a valuable method to assess sensory neurovascular function in the skin, which would be particularly relevant to evaluate the presence of small nerve fiber disorders and the effectiveness of treatments.
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Szolcsányi J. Effect of capsaicin on thermoregulation: an update with new aspects. Temperature (Austin) 2015; 2:277-96. [PMID: 27227029 PMCID: PMC4843897 DOI: 10.1080/23328940.2015.1048928] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/04/2015] [Accepted: 05/04/2015] [Indexed: 01/07/2023] Open
Abstract
Capsaicin, a selective activator of the chemo- and heat-sensitive transient receptor potential (TRP) V1 cation channel, has characteristic feature of causing long-term functional and structural impairment of neural elements supplied by TRPV1/capsaicin receptor. In mammals, systemic application of capsaicin induces complex heat-loss response characteristic for each species and avoidance of warm environment. Capsaicin activates cutaneous warm receptors and polymodal nociceptors but has no effect on cold receptors or mechanoreceptors. In this review, thermoregulatory features of capsaicin-pretreated rodents and TRPV1-mediated neural elements with innocuous heat sensitivity are summarized. Recent data support a novel hypothesis for the role of visceral warmth sensors in monitoring core body temperature. Furthermore, strong evidence suggests that central presynaptic nerve terminals of TRPV1-expressing cutaneous, thoracic and abdominal visceral receptors are activated by innocuous warmth stimuli and capsaicin. These responses are absent in TRPV1 knockout mice. Thermoregulatory disturbance induced by systemic capsaicin pretreatment lasts for months and is characterized by a normal body temperature at cool environment up to a total dose of 150 mg/kg s.c. Upward differential shift of set points for activation vasodilation, other heat-loss effectors and thermopreference develops. Avoidance of warm ambient temperature (35°C, 40°C) is severely impaired but thermopreference at cool ambient temperatures (Tas) are not altered. TRPV1 knockout or knockdown and genetically altered TRPV1, TRPV2 and TRPM8 knockout mice have normal core temperature in thermoneutral or cool environments, but the combined mutant mice have impaired regulation in warm or cold (4°C) environments. Several lines of evidence support that in the preoptic area warmth sensitive neurons are activated and desensitized by capsaicin, but morphological evidence for it is controversial. It is suggested that these neurons have also integrator function. Fever is enhanced in capsaicin-desensitized rats and the inhibition observed after pretreatment with low i.p. doses does not support in the light of their warmth sensitivity the concept that abdominal TRPV1-expressing nerve terminals serve as nonthermal chemosensors for reference signals in thermoregulation.
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Key Words
- (s)EPSC(s), (spontaneous) excitatory postsynaptic current(s)
- DRG, dorsal root ganglion (ganglia)
- EGFP, enhanced green fluorescent protein
- LC, locus coeruleus
- LPS, lipopolysaccharide
- NTS, nucleus of the solitary tract
- PG(s), prostaglandin(s)
- POA, the preoptic area (of the hypothalamus)
- RTX, resiniferatoxin
- TRP, transient receptor potential
- TRPM8
- TRPV1
- Ta(s), ambient temperature(s)
- Tr, rectal temperature
- Ts, skin temperature
- Tt, tail temperature
- capsaicin
- fever
- preoptic area
- thermoregulation
- visceral thermoreceptors
- warm receptors
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Affiliation(s)
- János Szolcsányi
- Department of Pharmacology and Pharmacotherapy; University Medical School of Pécs; Pécs, Hungary; Szentágothai Research Centre University of Pécs; Pécs, Hungary
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Pituitary Adenylate Cyclase-Activating Polypeptide Is Upregulated in Murine Skin Inflammation and Mediates Transient Receptor Potential Vanilloid-1-Induced Neurogenic Edema. J Invest Dermatol 2015; 135:2209-2218. [PMID: 25905588 DOI: 10.1038/jid.2015.156] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 03/23/2015] [Accepted: 04/08/2015] [Indexed: 12/18/2022]
Abstract
Although pituitary adenylate cyclase-activating polypeptide (PACAP) was described as a key vasoregulator in human skin, little is known about its expression in mouse skin. As it is important to investigate PACAP signaling in translational mouse dermatitis models, we determined its presence, regulation, and role in neurogenic and non-neurogenic cutaneous inflammatory mechanisms. The mRNA of PACAP and its specific receptor PAC1 was detected with real-time PCR in several skin regions at comparable levels. PACAP-38-immunoreactivity measured with radioimmunoassay was similar in plantar and dorsal paw skin and the ear but significantly smaller in the back skin. PACAP and PAC1 mRNA, as well as PACAP-38 and PAC1 protein expression, significantly increased in the plantar skin after intraplantar administration of capsaicin (50 μl, 100 μg ml(-1)), an agonist of the transient receptor potential vanilloid 1 (TRPV1) receptor, evoking chiefly neurogenic inflammation without inflammatory cell accumulation. Intraplantar complete Freund's adjuvant (CFA; 50 μl, 1 mg ml(-1)) also increased PACAP/PAC1 mRNA but not the PACAP peptide. Capsaicin-induced neurogenic paw edema, but not CFA-evoked non-neurogenic swelling, was significantly smaller in PACAP-deficient mice throughout a 24-hour period. To our knowledge, we provide previously unreported evidence for PACAP and PAC1 expression upregulation during skin inflammation of different mechanisms and for its pro-inflammatory function in neurogenic edema formation.
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Andersson DA, Filipović MR, Gentry C, Eberhardt M, Vastani N, Leffler A, Reeh P, Bevan S. Streptozotocin Stimulates the Ion Channel TRPA1 Directly: INVOLVEMENT OF PEROXYNITRITE. J Biol Chem 2015; 290:15185-96. [PMID: 25903127 DOI: 10.1074/jbc.m115.644476] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Indexed: 01/01/2023] Open
Abstract
Streptozotocin (STZ)-induced diabetes is the most commonly used animal model of diabetes. Here, we have demonstrated that intraplantar injections of low dose STZ evoked acute polymodal hypersensitivities in mice. These hypersensitivities were inhibited by a TRPA1 antagonist and were absent in TRPA1-null mice. In wild type mice, systemic STZ treatment (180 mg/kg) evoked a loss of cold and mechanical sensitivity within an hour of injection, which lasted for at least 10 days. In contrast, Trpa1(-/-) mice developed mechanical, cold, and heat hypersensitivity 24 h after STZ. The TRPA1-dependent sensory loss produced by STZ occurs before the onset of diabetes and may thus not be readily distinguished from the similar sensory abnormalities produced by the ensuing diabetic neuropathy. In vitro, STZ activated TRPA1 in isolated sensory neurons, TRPA1 cell lines, and membrane patches. Mass spectrometry studies revealed that STZ oxidizes TRPA1 cysteines to disulfides and sulfenic acids. Furthermore, incubation of tyrosine with STZ resulted in formation of dityrosine, suggesting formation of peroxynitrite. Functional analysis of TRPA1 mutants showed that cysteine residues that were oxidized by STZ were important for TRPA1 responsiveness to STZ. Our results have identified oxidation of TRPA1 cysteine residues, most likely by peroxynitrite, as a novel mechanism of action of STZ. Direct stimulation of TRPA1 complicates the interpretation of results from STZ models of diabetic sensory neuropathy and strongly argues that more refined models of diabetic neuropathy should replace the use of STZ.
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Affiliation(s)
- David A Andersson
- From the Wolfson Centre for Age-related Diseases, Hodgkin Building, Guy's Campus, King's College London, London SE1 1UL, United Kingdom,
| | - Milos R Filipović
- the Bioinorganic Chemistry Division, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Clive Gentry
- From the Wolfson Centre for Age-related Diseases, Hodgkin Building, Guy's Campus, King's College London, London SE1 1UL, United Kingdom
| | - Mirjam Eberhardt
- the Department of Anesthesiology and Intensive Care, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany, and
| | - Nisha Vastani
- From the Wolfson Centre for Age-related Diseases, Hodgkin Building, Guy's Campus, King's College London, London SE1 1UL, United Kingdom
| | - Andreas Leffler
- the Department of Anesthesiology and Intensive Care, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany, and
| | - Peter Reeh
- the Institute of Physiology and Pathophysiology, University of Erlangen-Nuremberg, Universitaetsstrasse 17, D-91054 Erlangen, Germany
| | - Stuart Bevan
- From the Wolfson Centre for Age-related Diseases, Hodgkin Building, Guy's Campus, King's College London, London SE1 1UL, United Kingdom
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84
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Horváth G, Kemény Á, Barthó L, Molnár P, Deli J, Szente L, Bozó T, Pál S, Sándor K, Szőke É, Szolcsányi J, Helyes Z. Effects of some natural carotenoids on TRPA1- and TRPV1-induced neurogenic inflammatory processes in vivo in the mouse skin. J Mol Neurosci 2015; 56:113-21. [PMID: 25645682 DOI: 10.1007/s12031-014-0472-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 11/18/2014] [Indexed: 01/25/2023]
Abstract
Mechanisms of the potent anti-inflammatory actions of carotenoids are unknown. Since carotenoids are incorporated into membranes, they might modulate transient receptor potential ankyrin 1 and vanilloid 1 (TRPA1 and TRPV1) activation predominantly on peptidergic sensory nerves. We therefore investigated the effects of three carotenoids (β-carotene, lutein and lycopene) on cutaneous neurogenic inflammation. Acute neurogenic edema and inflammatory cell recruitment were induced by smearing the TRPA1 agonist mustard oil (5%) or the TRPV1 activator capsaicin (2.5%) on the mouse ear. Ear thickness was then determined by micrometry, microcirculation by laser Doppler imaging and neutrophil accumulation by histopathology and spectrophotometric determination of myeloperoxidase activity. The effects of lutein on the stimulatory action of the TRPA1 agonist mustard oil were also tested on the guinea-pig small intestine, in isolated organ experiments. Mustard oil evoked 50-55% ear edema and granulocyte influx, as shown by histology and myeloperoxidase activity. Swelling was significantly reduced between 2 and 4 h after administration of lutein or β-carotene (100 mg/kg subcutane three times during 24 h). Lutein also decreased neutrophil accumulation induced by TRPA1 activation, but did not affect mustard oil-evoked intestinal contraction. Lycopene had no effect on any of these parameters. None of the three carotenoids altered capsaicin-evoked inflammation. It is proposed that the dihydroxycarotenoid lutein selectively inhibits TRPA1 activation and consequent neurogenic inflammation, possibly by modulating lipid rafts.
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Affiliation(s)
- Györgyi Horváth
- Department of Pharmacognosy, Medical School, University of Pécs, Rókus utca 2., Pécs, 7624, Hungary,
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85
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Kuzma M, Fodor K, Maász G, Avar P, Mózsik G, Past T, Fischer E, Perjési P. A validated HPLC-FLD method for analysis of intestinal absorption and metabolism of capsaicin and dihydrocapsaicin in the rat. J Pharm Biomed Anal 2015; 103:59-66. [DOI: 10.1016/j.jpba.2014.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 09/12/2014] [Accepted: 10/06/2014] [Indexed: 11/26/2022]
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86
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Nosulya EV, Kim IA, Chernykh NM, Karnoukhova OA. [Acute tonsillopharyngitis: the effectiveness of topical therapy]. Vestn Otorinolaringol 2015; 80:71-76. [PMID: 26525477 DOI: 10.17116/otorino201580571-76] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The objective of the present study was to evaluate the clinical effectiveness of a furasol sore throat gargle solution for the treatment of acute tonsillopharyngitis. Forty patients presenting with acute tonsillopharyngitis were allocated to two groups, 20 subjects in each, by means of independent sequential randomization. Prior to the onset of the treatment, all the patients were examined for determining the species composition of pharyngeal microflora with the use of an «AutoScan4 System» analyzer («Siemens», USA) and estimating the resistance to antibacterial preparations (by the disk diffusion method). All the participants of the study were prescribed antibacterial therapy. In the patients of group 1 (study group), the antibacterial treatment of acute tonsillopharyngitis was supplemented by a furasol sore throat gargle solution whereas those of group 2 (controls) were treated without topical therapy. The quantitative evaluation of the severity of manifestations of the disease before and after the treatment was based on a 5-point visual-analog scale. It was shown that systemic antibacterial therapy resulted in the consistent decrease of the frequency of occurrence of pathogenic and potentially pathogenic microflora in the patients comprising both groups. Treatment with a furasol sore throat gargle solution did not lead to the appearance of bacterial species alien to the oropharynx, nor was it accompanied by the impairment of resistance of its mucous membrane to the colonization by microorganisms. The results of the study give evidence of the well apparent regression of the subjective signs of tonsillopharyngitis and the inflammatory changes in the mucous membrane of the pharynx in the patients given the topical treatment in the form of a furasol sore throat gargle solution in addition to antibacterial therapy. It is concluded that a furasol sore throat gargle solution can be recommended for the introduction into the combined treatment of the patients presenting with acute tonsillopharyngitis.
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Affiliation(s)
- E V Nosulya
- Russian Medical Academy of Post-Graduate Education, Moscow, Russia, 125367
| | - I A Kim
- Russian Medical Academy of Post-Graduate Education, Moscow, Russia, 125367
| | - N M Chernykh
- Irkutsk State Medical University, Irkutsk, 664003
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87
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Abstract
Itch is a common distressing symptom which may be caused by multifactorial aetiologies including inflammatory skin diseases, systemic diseases, neuropathic conditions and psychogenic disorders. Itch is a term used synonymously with pruritus and is defined as acute if it lasts less than 6 weeks or chronic if it persists for more than 6 weeks. It can have the same impact on the quality of life as chronic pain and shares many of the same pathophysiological pathways. Depending on the aetiology of the itch, different pathogenic mechanisms have been postulated with a number of mediators identified. These include histamine, leukotrienes, proteases, neuropeptides, cytokines and opioids, which may activate peripheral itch-mediating C-fibres via receptors on the nerve terminals and central neuronal pathways. Therefore, there is no single universally effective anti-itch treatment available. First-line treatments for itch include topical therapies, such as emollients, mild cleansers (low pH), topical anaesthetics, steroids, calcineurin inhibitors and coolants (menthol). Treatment with systemic therapies can vary according to the aetiology of the chronic itch. Non-sedating antihistamines are helpful in conditions such as urticaria where the itch is primarily histamine mediated. Although the itch of eczema is not mediated by histamine, sedating antihistamines at night are helpful to break the itch-scratch cycle. Chronic itch may also be treated with other systemic therapies, such as anticonvulsants, antidepressants as well as mu-opioid antagonists, kappa-opioid agonists and phototherapy, depending on the cause of the itch. This article summarises the topical and systemic therapies available with our current understanding of the pathophysiology of itch.
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88
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Hsu E, Murphy S, Chang D, Cohen SP. Expert opinion on emerging drugs: chronic low back pain. Expert Opin Emerg Drugs 2014; 20:103-27. [DOI: 10.1517/14728214.2015.993379] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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89
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Tóth BI, Oláh A, Szöllősi AG, Bíró T. TRP channels in the skin. Br J Pharmacol 2014; 171:2568-81. [PMID: 24372189 DOI: 10.1111/bph.12569] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/28/2013] [Accepted: 12/03/2013] [Indexed: 12/16/2022] Open
Abstract
Emerging evidence suggests that transient receptor potential (TRP) ion channels not only act as 'polymodal cellular sensors' on sensory neurons but are also functionally expressed by a multitude of non-neuronal cell types. This is especially true in the skin, one of the largest organs of the body, where they appear to be critically involved in regulating various cutaneous functions both under physiological and pathophysiological conditions. In this review, we focus on introducing the roles of several cutaneous TRP channels in the regulation of the skin barrier, skin cell proliferation and differentiation, and immune functions. Moreover, we also describe the putative involvement of several TRP channels in the development of certain skin diseases and identify future TRP channel-targeted therapeutic opportunities.
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Affiliation(s)
- Balázs I Tóth
- Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, University of Debrecen, Medical and Health Science Center, Research Center for Molecular Medicine, Debrecen, Hungary
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90
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Horváth K, Boros M, Bagoly T, Sándor V, Kilár F, Kemény A, Helyes Z, Szolcsányi J, Pintér E. Analgesic topical capsaicinoid therapy increases somatostatin-like immunoreactivity in the human plasma. Neuropeptides 2014; 48:371-8. [PMID: 25455106 DOI: 10.1016/j.npep.2014.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 10/02/2014] [Accepted: 10/07/2014] [Indexed: 01/26/2023]
Abstract
The aim of the present study was to evaluate the therapeutic potential of local capsaicinoid (EMSPOMA(®) cream) treatment on chronic low back pain in patients with degenerative spine diseases and to investigate the possible mechanism of action of the therapy. The qualitative and quantitative analyses of capsaicinoids in EMSPOMA(®) cream were performed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). In the clinical study 20 patients with degenerative spine diseases were involved in a self-controlled examination. During the 21 day therapy they received 30 min daily treatment with capsaicinoid (EMSPOMA(®)) cream to the lumbar region of the back. The pain (VASs, Oswestry Disability Index) and the mobility of the lumbar region of the spine (Schober's, Domján's L and R test) were detected at baseline and at the end of the 1st, 2nd and 3rd weeks. The plasma level of somatostatin-like immunoreactivity (SST-LI) was measured by radioimmunoassay (RIA) before and after the treatment on the first and the last day of the therapy. Nonivamide (0.01%) was identified as the only capsaicinoid molecule in the cream. In the clinical study the 21 day local nonivamide treatment reduced the pain sensation. Oswestry Disability Index decreased from 39 ± 3.9% to 32.5 ± 4.4%. VASs showed 37.29%-59.51% improvement. In the plasma level of SST-LI threefold elevation was observed after the first nonivamide treatment. We conclude that nonivamide treatment exerts analgesic action in chronic low back pain and causes the release of the antinociceptive and anti-inflammatory neuropeptide somatostatin which may play pivotal role in the pain-relieving effect.
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Affiliation(s)
- Katalin Horváth
- Zsigmondy Vilmos Harkány Medicinal Spa Hospital, 1 Zsigmondy Street, Harkány 7815, Hungary
| | - Melinda Boros
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Teréz Bagoly
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Viktor Sándor
- MTA-PTE Molecular Interactions in Separation Science Research Group, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Ferenc Kilár
- Department of Bioanalysis, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Agnes Kemény
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Erika Pintér
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary.
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91
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Aslam R, Ansari M, Choudhary S, Bhat TM, Jahan N. Genotoxic effects of heavy metal cadmium on growth, biochemical, cyto-physiological parameters and detection of DNA polymorphism by RAPD in Capsicum annuum L. - An important spice crop of India. Saudi J Biol Sci 2014; 21:465-72. [PMID: 25313282 PMCID: PMC4190987 DOI: 10.1016/j.sjbs.2014.07.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/12/2014] [Accepted: 07/17/2014] [Indexed: 11/28/2022] Open
Abstract
The present study was designed to investigate the effects of cadmium (Cd) on biochemical, physiological and cytological parameters of Capsicum annuum L. treated with five different concentrations (20, 40, 60, 80 and 100 ppm) of the metal. Shoot-root length, pigment and protein content showed a continuous decrease with increasing Cd concentrations and the maximal decline was observed at the higher concentration. Proline content was found to be increased upto 60 ppm while at higher concentrations it gradually decreased. MDA content and chromosomal aberrations increased as the concentration increased. Additionally Random amplified polymorphic DNA (RAPD) technique was used for the detection of genotoxicity induced by Cd. A total of 184 bands (62 polymorphic and 122 monomorphic) were generated in 5 different concentrations with 10 primers where primer OPA-02 generated the highest percentage of polymorphism (52.63%). Dendrogram showed that control, R1 and R2 showed similar cluster and R4 and R5 grouped with R3 into one cluster, which showed that plants from higher doses showed much difference than the plants selected at mild doses which resemble control at the DNA level. This investigation showed that RAPD marker is a useful tool for evaluation of genetic diversity and relationship among different metal concentrations.
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Affiliation(s)
- Rumana Aslam
- Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
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92
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Abstract
The autonomic nervous system affects glucose metabolism partly through its connection to the pancreatic islet. Since its discovery by Paul Langerhans, the precise innervation patterns of the islet has remained elusive, mainly because of technical limitations. Using 3-dimensional reconstructions of axonal terminal fields, recent studies have determined the innervation patterns of mouse and human islets. In contrast to the mouse islet, endocrine cells within the human islet are sparsely contacted by autonomic axons. Instead, the invading sympathetic axons preferentially innervate smooth muscle cells of blood vessels. This innervation pattern suggests that, rather than acting directly on endocrine cells, sympathetic nerves may control hormone secretion by modulating blood flow in human islets. In addition to autonomic efferent axons, islets also receive sensory innervation. These axons transmit sensory information to the brain but also have the ability to locally release neuroactive substances that have been suggested to promote diabetes pathogenesis. We discuss recent findings on islet innervation, the connections of the islet with the brain, and the role islet innervation plays during the progression of diabetes.
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Affiliation(s)
- Rayner Rodriguez-Diaz
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Rolf Luft Research Center for Diabetes & Endocrinology, Karolinska Institutet, Stockholm, SE-17177, Sweden; Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Alejandro Caicedo
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Department of Physiology and Biophysics, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; Program in Neuroscience, Miller School of Medicine, University of Miami, Miami, FL 33136, USA.
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Kun J, Szitter I, Kemény Á, Perkecz A, Kereskai L, Pohóczky K, Vincze Á, Gódi S, Szabó I, Szolcsányi J, Pintér E, Helyes Z. Upregulation of the transient receptor potential ankyrin 1 ion channel in the inflamed human and mouse colon and its protective roles. PLoS One 2014; 9:e108164. [PMID: 25265225 PMCID: PMC4180273 DOI: 10.1371/journal.pone.0108164] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 08/18/2014] [Indexed: 12/18/2022] Open
Abstract
Transient Receptor Potential Ankyrin 1 (TRPA1) channels are localized on sensory nerves and several non-neural cells, but data on their functional significance are contradictory. We analysed the presence and alterations of TRPA1 in comparison with TRP Vanilloid 1 (TRPV1) at mRNA and protein levels in human and mouse intact and inflamed colons. The role of TRPA1 in a colitis model was investigated using gene-deficient mice. TRPA1 and TRPV1 expressions were investigated in human colon biopsies of healthy subjects and patients with inflammatory bowel diseases (IBD: ulcerative colitis, Crohn's disease) with quantitative PCR and immunohistochemistry. Mouse colitis was induced by oral 2% dextran-sulphate (DSS) for 10 days. For investigating the functions of TRPA1, Disease Activity Index (weight loss, stool consistency, blood content) was determined in C57BL/6-based Trpa1-deficient (knockout: KO) and wildtype (WT) mice. Sensory neuropeptides, their receptors, and inflammatory cytokines/chemokines were determined with qPCR or Luminex. In human and mouse colons TRPA1 and TRPV1 are located on epithelial cells, macrophages, enteric ganglia. Significant upregulation of TRPA1 mRNA was detected in inflamed samples. In Trpa1 KO mice, Disease Activity Index was significantly higher compared to WTs. It could be explained by the greater levels of substance P, neurokinins A and B, neurokinin 1 receptor, pituitary adenylate-cyclase activating polypeptide, vasoactive intestinal polypeptide, and also interleukin-1beta, macrophage chemoattractant protein-1, monokine induced by gamma interferon-1, tumor necrosis factor-alpha and B-lymphocyte chemoattractant in the distal colon. TRPA1 is upregulated in colitis and its activation exerts protective roles by decreasing the expressions of several proinflammatory neuropeptides, cytokines and chemokines.
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Affiliation(s)
- József Kun
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- Molecular Pharmacology Research Group, János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - István Szitter
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- Molecular Pharmacology Research Group, János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- Molecular Pharmacology Research Group, János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Anikó Perkecz
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
| | - László Kereskai
- Department of Pathology, Medical School, University of Pécs, Pécs, Hungary
| | - Krisztina Pohóczky
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
| | - Áron Vincze
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Szilárd Gódi
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Imre Szabó
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
| | - Erika Pintér
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- Molecular Pharmacology Research Group, János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- Molecular Pharmacology Research Group, János Szentágothai Research Center, University of Pécs, Pécs, Hungary
- * E-mail:
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94
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Gaul C, Resch S. Application of the capsaicin 8% cutaneous patch in neuropathic pain of the head and face: A case series. Cephalalgia 2014; 35:545-50. [PMID: 25217483 DOI: 10.1177/0333102414550107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 08/03/2014] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Treatment of neuropathic or neuralgic head and facial pain due to dental, traumatic or surgical nerve lesions or post-herpetic neuropathy is often challenging. CASES We are reporting on four patients with neuropathic pain syndromes successfully treated with a capsaicin 8% patch in the affected area of the head or face. DISCUSSION Treatment with the capsaicin 8% patch seems to be effective and safe for application to the facial and head region. The capsaicin 8% patch might be an additional treatment option if first-line treatment with anticonvulsants or antidepressants was ineffective or limited by side effects.
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Affiliation(s)
- Charly Gaul
- Migraine and Headache Clinic, Germany Department of Neurology, University Hospital Essen, Germany
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95
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Sganzerla M, Coutinho JP, de Melo AMT, Godoy HT. Fast method for capsaicinoids analysis from Capsicum chinense fruits. Food Res Int 2014; 64:718-725. [PMID: 30011708 DOI: 10.1016/j.foodres.2014.08.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 08/07/2014] [Accepted: 08/14/2014] [Indexed: 12/01/2022]
Abstract
Chili peppers are widely utilized in the world as savory food additives due the pungency induced by the capsaicinoids. Also, these compounds have functional properties as antimutagenic, antitumoral, antioxidant and analgesic. These characteristics increase the interest in this compound class, hence the capsaicinoid analysis must be reproducible and accurate. This study aimed to develop and validate a fast, efficient and reproducible method to analyze capsaicinoids in Brazilian Capsicum chinense fruits. The extracts were obtained after an optimization step that indicated the condition 100% of methanol and 10min on ultrasound assisted extraction. The analyses were carried out in an ultra high performance liquid chromatographic system with detection by a photo diode array and mass spectrometer. The analytical method developed permits the separation of 8 capsaicinoids in 4min of time analysis expending only 2mL of solvent as mobile phase. The validation parameters evaluated for the method show the effectiveness and satisfactory performance to answer the analytical needs of this research area, presenting low values to relative standard deviation in repeatability and reproducibility and recoveries ranged from 88 to 112% for capsaicin and 89 to 109% for dihydrocapsaicin. In the extracts from different accessions of C. chinense fruits analyzed, the contents of capsaicin and dihydrocapsaicin were in the range of 156-1442μgg-1 and 26-478μgg-1 of fresh fruit, respectively, showing the large application of this method for quantification of the two major capsaicinoids in fast routine analysis and may be used to determine the concentrations of other minor capsaicinoids once appropriate standards are available.
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Affiliation(s)
- Marla Sganzerla
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | - Janclei Pereira Coutinho
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | | | - Helena Teixeira Godoy
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), P.O. Box 6121, 13083-862 Campinas, SP, Brazil.
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96
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Ionotropic and metabotropic proton-sensing receptors involved in airway inflammation in allergic asthma. Mediators Inflamm 2014; 2014:712962. [PMID: 25197168 PMCID: PMC4147257 DOI: 10.1155/2014/712962] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/10/2014] [Accepted: 07/24/2014] [Indexed: 12/19/2022] Open
Abstract
An acidic microenvironment has been shown to evoke a variety of airway responses, including cough, bronchoconstriction, airway hyperresponsiveness (AHR), infiltration of inflammatory cells in the lung, and stimulation of mucus hyperproduction. Except for the participation of transient receptor potential vanilloid-1 (TRPV1) and acid-sensing ion channels (ASICs) in severe acidic pH (of less than 6.0)-induced cough and bronchoconstriction through sensory neurons, the molecular mechanisms underlying extracellular acidic pH-induced actions in the airways have not been fully understood. Recent studies have revealed that ovarian cancer G protein-coupled receptor 1 (OGR1)-family G protein-coupled receptors, which sense pH of more than 6.0, are expressed in structural cells, such as airway smooth muscle cells and epithelial cells, and in inflammatory and immune cells, such as eosinophils and dendritic cells. They function in a variety of airway responses related to the pathophysiology of inflammatory diseases, including allergic asthma. In the present review, we discuss the roles of ionotropic TRPV1 and ASICs and metabotropic OGR1-family G protein-coupled receptors in the airway inflammation and AHR in asthma and respiratory diseases.
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97
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Capsaicin as new orally applicable gastroprotective and therapeutic drug alone or in combination with nonsteroidal anti-inflammatory drugs in healthy human subjects and in patients. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 2014; 68:209-58. [PMID: 24941671 DOI: 10.1007/978-3-0348-0828-6_9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Capsaicin is a specific compound acting on capsaicin-sensitive afferent nerves. AIM Capsaicin was used to study the different events of human gastrointestinal physiology, pathology, and clinical pharmacology, and possible therapeutic approaches to enhance gastrointestinal mucosal defense in healthy human subjects and in patients with various different gastrointestinal disorders as well as its use with nonsteroidal anti-inflammatory drugs (NSAIDs) in healthy subjects and in patients. MATERIALS AND METHODS The observations were carried out in 198 healthy human subjects and in 178 patients with different gastrointestinal (GI) diseases (gastritis, erosions, ulcer, polyps, cancer, inflammatory bowel diseases, colorectal polyps, cancers), and in 69 patients with chronic (Helicobacter pylori positive and negative) gastritis (before and after eradication treatment). The gastric secretory responses and their chemical composition, gastric emptying, sugar loading test, gastric transmucosal potential difference (GTPD) with application of capsaicin alone, after ethanol alone and with capsaicin, indomethacin-induced gastric mucosal microbleeding without and with capsaicin were studied. The immunohistochemical examinations of the capsaicin receptor (TRVP1), calcitonin gene- related peptide (CGRP), and substance P (SP) were carried out in gastrointestinal tract, and especially in patients with chronic gastritis (with and without Helicobacter infection, before and after classical eradication treatment). Classical molecular pharmacological methods were applied to study the drugs inhibiting the gastric basal acid output. RESULTS Capsaicin decreased the gastric basal output, enhanced the "non-parietal" (buffering) component of gastric secretory responses, and gastric emptying, and the release of glucagon. Capsaicin prevented the indomethacin- and ethanol-induced gastric mucosal damage; meanwhile capsaicin itself enhanced (GTPD). Capsaicin prevented the indomethacin-induced gastric mucosal microbleeding. The expression of TRVP1 and CGRP increased in the gastric mucosa of patients with chronic gastritis (independently of the presence of Helicobacter pylori infection), and the successfully carried out eradication treatment. The human first phase examinations (the application of acetylsalicylic acid (ASA), diclqfenac, and naproxen together with capcaicinoids) (given in doses that stimulate capsaicin-sensitive afferent vagal nerves) showed no change in the pharmacokinetic parameters of ASA and diclofenac and the ASA and diclofenac-induced platelet aggregation. CONCLUSIONS Capsaicin represents a new orally applicable gastroprotective agent in healthy human subjects and in patients with different chemical and Helicobacter pylori-induced mucosal damage and in many other diseases requiring treatment with NSAIDs.
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98
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Newson PN, van den Buuse M, Martin S, Lynch-Frame A, Chahl LA. Effects of neonatal treatment with the TRPV1 agonist, capsaicin, on adult rat brain and behaviour. Behav Brain Res 2014; 272:55-65. [PMID: 24975423 DOI: 10.1016/j.bbr.2014.06.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 06/16/2014] [Accepted: 06/20/2014] [Indexed: 12/28/2022]
Abstract
Treatment of neonatal rats with the transient receptor potential vanilloid 1 (TRPV1) channel agonist, capsaicin, produces life-long loss of sensory neurons expressing TRPV1 channels. Previously it was shown that rats treated on day 2 of life with capsaicin had behavioural hyperactivity in a novel environment at 5-7 weeks of age and brain changes reminiscent of those found in subjects with schizophrenia. The objective of the present study was to investigate brain and behavioural responses of adult rats treated as neonates with capsaicin. It was found that the brain changes found at 5-7 weeks in rats treated as neonates with capsaicin persisted into adulthood (12 weeks) but were less in older rats (16-18 weeks). Increased prepulse inhibition (PPI) of acoustic startle was found in these rats at 8 and 12 weeks of age rather than the deficit commonly found in animal models of schizophrenia. Subjects with schizophrenia also have reduced flare responses to niacin and methylnicotinate proposed to be mediated by prostaglandin D2 (PGD2). Flare responses are accompanied by cutaneous plasma extravasation. It was found that the cutaneous plasma extravasation responses to methylnicotinate and PGD2 were reduced in capsaicin-treated rats. In conclusion, several neuroanatomical changes observed in capsaicin-treated rats, as well as the reduced cutaneous plasma extravasation responses, indicate that the role of TRPV1 channels in schizophrenia is worthy of investigation.
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Affiliation(s)
- Penny N Newson
- School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW 2308, Australia; Schizophrenia Research Institute, 405 Liverpool St, Darlinghurst, NSW 2010, Australia
| | - Maarten van den Buuse
- Mental Health Research Institute, Parkville, Victoria 3052, Australia; School of Psychological Science, La Trobe University, Melbourne, Australia
| | - Sally Martin
- Mental Health Research Institute, Parkville, Victoria 3052, Australia
| | - Ann Lynch-Frame
- School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW 2308, Australia; Schizophrenia Research Institute, 405 Liverpool St, Darlinghurst, NSW 2010, Australia
| | - Loris A Chahl
- School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW 2308, Australia; Schizophrenia Research Institute, 405 Liverpool St, Darlinghurst, NSW 2010, Australia.
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99
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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100
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Chibli LA, Rodrigues KCM, Gasparetto CM, Pinto NCC, Fabri RL, Scio E, Alves MS, Del-Vechio-Vieira G, Sousa OV. Anti-inflammatory effects of Bryophyllum pinnatum (Lam.) Oken ethanol extract in acute and chronic cutaneous inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2014; 154:330-338. [PMID: 24727190 DOI: 10.1016/j.jep.2014.03.035] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 02/26/2014] [Accepted: 03/14/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Bryophyllum pinnatum (Lam.) Oken (Crassulaceae), popularly known in Brazil as "folha-da-fortuna", is a plant species used in folk medicine for the external and internal treatment of inflammation, infection, wound, burn, boil, ulcers and gastritis, and several other diseases. The present study aimed to perform the chemical characterization and the evaluation of the topical anti-inflammatory effect of the ethanol extract of Bryophyllum pinnatum leaves (EEBP) in acute and chronic mice ear edema models induced by different irritant agents. MATERIALS AND METHODS The EEBP chemical characterization was performed by HPLC-UV DAD. Ear edema on Swiss mice was induced by the topical application of Croton oil (single and multiple applications), arachidonic acid, phenol, capsaicin and ethyl phenylpropiolate (EPP). The topical anti-inflammatory effect of EEBP was evaluated by measuring the ear weight (acute inflammation models) and thickness (chronic inflammation model). Histopathological analyses of ear tissue samples sensitized with Croton oil (single and multiple applications) were also performed. RESULTS The flavonoids rutin, quercetin, luteolin and luteolin7-O-β-d-glucoside were detected in EEBP. Topical application of EEBP significantly (P<0.001) inhibited the ear edema induced by Croton oil single application (inhibition of 57%), arachidonic acid (inhibition of 67%), phenol (inhibition of 80%), capsaicin (inhibition of 72%), EPP (inhibition of 75%) and Croton oil multiple application (55% after 9 days). Histopathological analyses confirmed the topical anti-inflammatory effect of EEBP since it was observed reduction of edema, epidermal hyperplasia, inflammatory cells infiltration and vasodilation. CONCLUSIONS The results suggest that EEBP is effective as a topical anti-inflammatory agent in acute and chronic inflammatory processes possibly due to inhibition of arachidonic acid pathway, which justify the traditional use of Bryophyllum pinnatum as a remedy for skin disorders.
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Affiliation(s)
- Lucas A Chibli
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Kamilla C M Rodrigues
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Carolina M Gasparetto
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Nícolas C C Pinto
- Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Rodrigo L Fabri
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Elita Scio
- Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Maria S Alves
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Glauciemar Del-Vechio-Vieira
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
| | - Orlando V Sousa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, CEP 36036-330, Juiz de Fora, MG, Brazil.
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