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Gxaba N, Manganyi MC. The Fight against Infection and Pain: Devil’s Claw (Harpagophytum procumbens) a Rich Source of Anti-Inflammatory Activity: 2011–2022. Molecules 2022; 27:molecules27113637. [PMID: 35684573 PMCID: PMC9182060 DOI: 10.3390/molecules27113637] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 11/28/2022] Open
Abstract
Harpagophytum procumbens subsp. procumbens (Burch.) DC. ex Meisn. (Sesame seed Family—Pedaliaceae) is a popular medicinal plant known as Devil’s claw. It is predominantly distributed widely over southern Africa. Its impressive reputation is embedded in its traditional uses as an indigenous herbal plant for the treatment of menstrual problems, bitter tonic, inflammation febrifuge, syphilis or even loss of appetite. A number of bioactive compounds such as terpenoids, iridoid glycosides, glycosides, and acetylated phenolic compounds have been isolated. Harpagoside and harpagide, iridoid glycosides bioactive compounds have been reported in countless phytochemical studies as potential anti-inflammatory agents as well as pain relievers. In-depth studies have associated chronic inflammation with various diseases, such as Alzheimer’s disease, obesity, rheumatoid arthritis, type 2 diabetes, cancer, and cardiovascular and pulmonary diseases. In addition, 60% of chronic disorder fatalities are due to chronic inflammatory diseases worldwide. Inflammation and pain-related disorders have attracted significant attention as leading causes of global health challenges. Articles published from 2011 to the present were obtained and reviewed in-depth to determine valuable data findings as well as knowledge gaps. Various globally recognized scientific search engines/databases including Scopus, PubMed, Google Scholar, Web of Science, and ScienceDirect were utilized to collect information and deliver evidence. Based on the literature results, there was a dramatic decrease in the number of studies conducted on the anti-inflammatory and analgesic activity of Devil’s claw, thereby presenting a potential research gap. It is also evident that currently in vivo clinical studies are needed to validate the prior massive in vitro studies, therefore delivering an ideal anti-inflammatory and analgesic agent in the form of H. procumbens products.
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Brochard S, Pontin J, Bernay B, Boumediene K, Conrozier T, Baugé C. The benefit of combining curcumin, bromelain and harpagophytum to reduce inflammation in osteoarthritic synovial cells. BMC Complement Med Ther 2021; 21:261. [PMID: 34649531 PMCID: PMC8515758 DOI: 10.1186/s12906-021-03435-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/27/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is the most common form of arthritis, affecting millions of people worldwide and characterised by joint pain and inflammation. It is a complex disease involving inflammatory factors and affecting the whole joint, including the synovial membrane. Since drug combination is widely used to treat chronic inflammatory diseases, a similar strategy of designing plant-derived natural products to reduce inflammation in OA joints may be of interest. In this study, we characterised the response of OA synovial cells to lipopolysaccharide (LPS) and investigated the biological action of the combination of curcumin, bromelain and harpagophytum in this original in vitro model of osteoarthritis. METHODS Firstly, human synovial cells from OA patients were stimulated with LPS and proteomic analysis was performed. Bioinformatics analyses were performed using Cytoscape App and SkeletalVis databases. Additionally, cells were treated with curcumin, bromelain and harpagophytum alone or with the three vegetal compounds together. The gene expression involved in inflammation, pain or catabolism was determined by RT-PCR. The release of the encoded proteins by these genes and of prostaglandin E2 (PGE2) were also assayed by ELISA. RESULTS Proteomic analysis demonstrated that LPS induces the expression of numerous proteins involved in the OA process in human OA synovial cells. In particular, it stimulates inflammation through the production of pro-inflammatory cytokines (Interleukin-6, IL-6), catabolism through an increase of metalloproteases (MMP-1, MMP-3, MMP-13), and the production of pain-mediating neurotrophins (Nerve Growth Factor, NGF). These increases were observed in terms of mRNA levels and protein release. LPS also increases the amount of PGE2, another inflammation and pain mediator. At the doses tested, vegetal extracts had little effect: only curcumin slightly counteracted the effects of LPS on NGF and MMP-13 mRNA, and PGE2, IL-6 and MMP-13 release. In contrast, the combination of curcumin with bromelain and harpagophytum reversed lots of effects of LPS in human OA synovial cells. It significantly reduced the gene expression and/or the release of proteins involved in catabolism (MMP-3 and -13), inflammation (IL-6) and pain (PGE2 and NGF). CONCLUSION We have shown that the stimulation of human OA synovial cells with LPS can induce protein changes similar to inflamed OA synovial tissues. In addition, using this model, we demonstrated that the combination of three vegetal compounds, namely curcumin, bromelain and harpagophytum, have anti-inflammatory and anti-catabolic effects in synovial cells and may thus reduce OA progression and related pain.
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Affiliation(s)
- Sybille Brochard
- EA7451 BioConnect, Université de Caen Normandie, UNICAEN, 14032, Caen, France
| | - Julien Pontin
- Proteogen platform, Normandie Univ, UNICAEN, Caen, France
| | - Benoit Bernay
- Proteogen platform, Normandie Univ, UNICAEN, Caen, France
| | - Karim Boumediene
- EA7451 BioConnect, Université de Caen Normandie, UNICAEN, 14032, Caen, France
| | - Thierry Conrozier
- Rheumatology Department, Nord Franche-Comté Hospital, Trevenans, France
| | - Catherine Baugé
- EA7451 BioConnect, Université de Caen Normandie, UNICAEN, 14032, Caen, France.
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Brendler T. From Bush Medicine to Modern Phytopharmaceutical: A Bibliographic Review of Devil's Claw ( Harpagophytum spp.). Pharmaceuticals (Basel) 2021; 14:726. [PMID: 34451822 PMCID: PMC8398729 DOI: 10.3390/ph14080726] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Devil's claw (Harpagophytum spp., Pedaliaceae) is one of the best-documented phytomedicines. Its mode of action is largely elucidated, and its efficacy and excellent safety profile have been demonstrated in a long list of clinical investigations. The author conducted a bibliographic review which not only included peer-reviewed papers published in scientific journals but also a vast amount of grey literature, such as theses and reports initiated by governmental as well as non-governmental organizations, thus allowing for a more holistic presentation of the available evidence. Close to 700 sources published over the course of two centuries were identified, confirmed, and cataloged. The purpose of the review is three-fold: to trace the historical milestones in devil's claw becoming a modern herbal medicine, to point out gaps in the seemingly all-encompassing body of research, and to provide the reader with a reliable and comprehensive bibliography. The review covers aspects of ethnobotany, taxonomy, history of product development and commercialization, chemistry, pharmacology, toxicology, as well as clinical efficacy and safety. It is concluded that three areas stand out in need of further investigation. The taxonomical assessment of the genus is outdated and lacking. A revision is needed to account for intra- and inter-specific, geographical, and chemo-taxonomical variation, including variation in composition. Further research is needed to conclusively elucidate the active compound(s). Confounded by early substitution, intermixture, and blending, it has yet to be demonstrated beyond a reasonable doubt that both (or all) Harpagophytum spp. are equally (and interchangeably) safe and efficacious in clinical practice.
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Affiliation(s)
- Thomas Brendler
- Department of Botany and Plant Biotechnology, University of Johannesburg, Auckland Park, Johannesburg 2006, South Africa;
- Plantaphile, Collingswood, NJ 08108, USA
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Mariano A, Di Sotto A, Leopizzi M, Garzoli S, Di Maio V, Gullì M, Dalla Vedova P, Ammendola S, Scotto d’Abusco A. Antiarthritic Effects of a Root Extract from Harpagophytum procumbens DC: Novel Insights into the Molecular Mechanisms and Possible Bioactive Phytochemicals. Nutrients 2020; 12:nu12092545. [PMID: 32842461 PMCID: PMC7551290 DOI: 10.3390/nu12092545] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 02/07/2023] Open
Abstract
Harpagophytum procumbens (Burch.) DC. ex Meisn. is a traditional remedy for osteoarticular diseases, including osteoarthritis (OA), although the bioactive constituents and mechanisms involved are yet to be clarified. In the present study, an aqueous H. procumbens root extract (HPE; containing 1.2% harpagoside) was characterized for its effects on synoviocytes from OA patients and phytochemical composition in polyphenols, and volatile compounds were detected. HPE powder was dissolved in different solvents, including deionized water (HPEH2O), DMSO (HPEDMSO), 100% v/v ethanol (HPEEtOH100), and 50% v/v ethanol (HPEEtOH50). The highest polyphenol levels were found in HPEDMSO and HPEEtOH50, whereas different volatile compounds, mainly β-caryophyllene and eugenol, were detected in all the extracts except for HPEH2O. HPEH2O and HPEDMSO were able to enhance CB2 receptor expression and to downregulate PI-PLC β2 in synovial membranes; moreover, all the extracts inhibited FAAH activity. The present results highlight for the first time a multitarget modulation of the endocannabinoid system by HPE, likely ascribable to its hydrosoluble compounds, along with the presence of volatile compounds in H. procumbens root. Although hydrosoluble compounds seem to be mainly responsible for endocannabinoid modulation by HPE, a possible contribution of volatile compounds can be suggested, strengthening the hypothesis that the entire phytocomplex can contribute to the H. procumbens healing properties.
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Affiliation(s)
- Alessia Mariano
- Department of Biochemical Sciences, Sapienza University of Roma, P.le Aldo Moro 5, 00185 Roma, Italy;
| | - Antonella Di Sotto
- Department of Physiology and Pharmacology, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (A.D.S.); (M.G.)
| | - Martina Leopizzi
- Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino-Sapienza University, 04100 Latina, Italy; (M.L.); (V.D.M.)
| | - Stefania Garzoli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy;
| | - Valeria Di Maio
- Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino-Sapienza University, 04100 Latina, Italy; (M.L.); (V.D.M.)
| | - Marco Gullì
- Department of Physiology and Pharmacology, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (A.D.S.); (M.G.)
| | - Pietro Dalla Vedova
- UOC di Ortopedia e Traumatologia, Ospedale Santa Scolastica di Cassino, ASL di Frosinone, Via S. Pasquale, 03043 Cassino, Italy;
| | - Sergio Ammendola
- Ambiotec S.A.S. Via Appia Nord 47, 04012 Cisterna di Latina (LT), Italy;
| | - Anna Scotto d’Abusco
- Department of Biochemical Sciences, Sapienza University of Roma, P.le Aldo Moro 5, 00185 Roma, Italy;
- Correspondence: ; Tel.: +39-06-4991-0947
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Ungerer G, Cui J, Ndam T, Bekemeier M, Song H, Li R, Siedhoff HR, Yang B, Appenteng MK, Greenlief CM, Miller DK, Sun GY, Folk WR, Gu Z. Harpagophytum procumbens Extract Ameliorates Allodynia and Modulates Oxidative and Antioxidant Stress Pathways in a Rat Model of Spinal Cord Injury. Neuromolecular Med 2020; 22:278-292. [PMID: 31900786 DOI: 10.1007/s12017-019-08585-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 12/19/2019] [Indexed: 02/07/2023]
Abstract
Spinal cord injury (SCI) is a deliberating disorder with impairments in locomotor deficits and incapacitating sensory abnormalities. Harpagophytum procumbens (Hp) is a botanical widely used for treating inflammation and pain related to various inflammatory and musculoskeletal conditions. Using a modified rodent contusion model of SCI, we explored the effects of this botanical on locomotor function and responses to mechanical stimuli, and examined possible neurochemical changes associated with SCI-induced allodynia. Following spinal cord contusion at T10 level, Hp (300 mg/kg, p.o.) or vehicle (water) was administered daily starting 24 h post-surgery, and behavioral measurements made every-other day until sacrifice (Day 21). Hp treatment markedly ameliorated the contusion-induced decrease in locomotor function and increased sensitivity to mechanical stimuli. Determination of Iba1 expression in spinal cord tissues indicated microglial infiltration starting 3 days post-injury. SCI results in increased levels of 4-hydroxynonenal, an oxidative stress product and proalgesic, which was diminished at 7 days by treatment with Hp. SCI also enhanced antioxidant heme oxygenase-1 (HO-1) expression. Concurrent studies of cultured murine BV-2 microglial cells revealed that Hp suppressed oxidative/nitrosative stress and inflammatory responses, including production of nitric oxide and reactive oxygen species, phosphorylation of cytosolic phospholipases A2, and upregulation of the antioxidative stress pathway involving the nuclear factor erythroid 2-related factor 2 and HO-1. These results support the use of Hp for management of allodynia by providing resilience against the neuroinflammation and pain associated with SCI and other neuropathological conditions.
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Affiliation(s)
- Garrett Ungerer
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Jiankun Cui
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Tina Ndam
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Mikeala Bekemeier
- Department of Psychological Sciences, College of Arts & Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Hailong Song
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Runting Li
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Heather R Siedhoff
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA
| | - Bo Yang
- Department of Chemistry, College of Arts & Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Michael K Appenteng
- Department of Chemistry, College of Arts & Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - C Michael Greenlief
- Department of Chemistry, College of Arts & Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Dennis K Miller
- Department of Psychological Sciences, College of Arts & Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Grace Y Sun
- Biochemistry Department, School of Medicine and College of Agriculture, Food and Natural Resources, University of Missouri, Columbia, MO, 65211, USA
| | - William R Folk
- Biochemistry Department, School of Medicine and College of Agriculture, Food and Natural Resources, University of Missouri, Columbia, MO, 65211, USA
| | - Zezong Gu
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, 65212, USA.
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Analgesic Effects of Cnidium officinale Extracts on Postoperative, Neuropathic, and Menopausal Pain in Rat Models. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:9698727. [PMID: 31316578 PMCID: PMC6601495 DOI: 10.1155/2019/9698727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 06/02/2019] [Indexed: 12/15/2022]
Abstract
Cnidium officinale, widely cultivated in East Asia, has been reported to exhibit pharmacological efficacy in various disorders. However, little has been reported on its role as a pain killer. In this study, we reveal that the C. officinale extract (COE) has great efficacy as a novel analgesic in various in vivo pain models. Administration of COE attenuated hypersensitivity in all postoperative, neuropathic, and menopausal pain models. Decreased hyperalgesia was confirmed by a mechanical withdrawal threshold assay and ultrasonic vocalization call analysis. In addition, application of COE inhibited the induction of the proinflammatory cytokines and calpain-3 on dorsal root ganglion neurons in a spared nerve injury rat model. Treatment with ferulic acid, which was identified as one of the components of COE by HPLC analysis, alleviated nociceptive behaviors. Our findings suggest that ferulic acid is an active compound from COE, and COE is a potential phytomedical source for pain relief by inhibiting the process of inflammation.
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Mitra S, Carlyle D, Kodumudi G, Kodumudi V, Vadivelu N. New Advances in Acute Postoperative Pain Management. Curr Pain Headache Rep 2018; 22:35. [PMID: 29619627 DOI: 10.1007/s11916-018-0690-8] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW Postoperative pain remains one of the most common challenges following inpatient and outpatient surgeries. With our advances in modern medicine, pain following surgical procedures still remains a challenge, though significant accomplishments have been made over the past few decades. This article highlights some of the promising new advances and approaches in postoperative pain management. RECENT FINDINGS Over the last decade, Enhanced Recovery after Surgery (ERAS) pathways and protocols are becoming the benchmark standards for enhancing postoperative recovery. Multimodal analgesia (MMA) is an essential component of such care. Further, in the wake of serious and persistent concern on the opioid epidemic in the USA, there has been a recent renewal of interest in non-opioid alternatives or adjuncts in controlling postoperative pain, often in the context of MMA. Intravenous (IV) acetaminophen, non-steroidal anti-inflammatory drugs (NSAIDs), magnesium, ketamine, dexmedetomidine, liposomal bupivacaine, and newer neuraxial and peripheral regional techniques as well as patient-controlled modalities are gaining importance. Gabapentinoids have become popular but recent meta-analytic reviews have cast doubt on their routine use in perioperative settings. Among opioids, sublingual sufentanil, IV oxycodone, and iontophoretic transdermal fentanyl hold promise. Acupuncture and transcutaneous electrical nerve stimulation may be useful as adjuncts in MMA packages. Genetic testing, derivatives of herbal preparations, and an extended role of acute pain services may emerge as potential areas of importance in the future. There are, however, critical gaps in good quality evidence in many of the practice guideline recommendations. In the era of opioid epidemic, several lines of evidence have emerged to support non-opioid-based drugs and approaches along with a few newer opioid formulations for postoperative pain management, although more research is needed to find the right balance of efficacy and safety.
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Affiliation(s)
- Sukanya Mitra
- Department of Anaesthesia and Intensive Care, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India.
| | - Daniel Carlyle
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Gopal Kodumudi
- California Northstate University College of Medicine, Elk Grove, CA, USA
| | - Vijay Kodumudi
- University of Connecticut School of Medicine, Farmington, CT, USA
| | - Nalini Vadivelu
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
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Khalid S, Ullah MZ, Khan AU, Afridi R, Rasheed H, Khan A, Ali H, Kim YS, Khan S. Antihyperalgesic Properties of Honokiol in Inflammatory Pain Models by Targeting of NF-κB and Nrf2 Signaling. Front Pharmacol 2018; 9:140. [PMID: 29615898 PMCID: PMC5869907 DOI: 10.3389/fphar.2018.00140] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/08/2018] [Indexed: 12/20/2022] Open
Abstract
The present study investigates the possible anti-nociceptive effect of intraperitoneal (i.p.) honokiol: a phenolic compound originally isolated from Magnolia officinalis, in acute and chronic inflammatory pain models. Doses of 0.1, 5, and 10 mg/kg honokiol were administered in carrageenan induced pain and the dose (honokiol 10 mg/kg i.p.) with most significant response among behavioral tests was selected for further experiments. The i.p. administration of honokiol inhibits mechanical hyperalgesia, mechanical allodynia, and thermal hyperalgesia, without causing any apparent toxicity. To elucidate the effect of honokiol on various cytokines and antioxidant enzymes, quantitative real-time-PCR was performed to determine the expression levels of pro-inflammatory cytokines and antioxidant enzymes. It is demonstrated that honokiol significantly reduced the expression levels of tumor necrosis factor (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), and vascular endothelial growth factor (VEGF). Similarly, honokiol was also found to potentiate the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), superoxide dismutase 2 (SOD2), and heme oxygenase-1 (HO-1) levels. Additionally, honokiol significantly reduced plasma nitrite levels as compared to complete Freund's adjuvant (CFA) induced group. X-ray analysis and hematoxylin and eosin (H&E) staining of inflamed and treated paws showed that honokiol reduced the inflammation with significantly less leukocyte infiltration and soft tissue inflammation. In order to explore the possible mechanism of action of honokiol, agonists [piroxicam (5 mg/kg), tramadol (50 mg/kg), and gabapentin (5 mg/kg) i.p.] as well as antagonists [naloxone (4 mg/kg), olanzapine (10 mg/kg), and flumazenil (0.2 mg/kg) i.p.] were used to study involvement of various receptors on the anti-nociceptive effect of honokiol. The potential side effects of honokiol on muscle activity were assessed. An adverse effect testing of honokiol by liver and renal functions were also carried out. The effect of oral honokiol was also assessed on gastrointestinal (GIT) mucosa. Our results demonstrate that honokiol has a significant anti-nociceptive activity through inhibition of anti-inflammatory mediators.
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Affiliation(s)
- Sidra Khalid
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Z. Ullah
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ashraf U. Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ruqayya Afridi
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hina Rasheed
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Adnan Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hussain Ali
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Yeong S. Kim
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Salman Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Antihyperalgesic effects of ashwagandha (Withania somnifera root extract) in rat models of postoperative and neuropathic pain. Inflammopharmacology 2017; 26:207-215. [PMID: 28849547 DOI: 10.1007/s10787-017-0389-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/11/2017] [Indexed: 12/28/2022]
Abstract
The root of Withania somnifera, commonly known as ashwagandha, is a traditional herb in the Indian Ayurvedic system of medicine and is used as a tonic. Here, we investigated whether W. somnifera root extract exhibits analgesic effects in plantar incision (PI) and spared nerve injury (SNI) rat models. Mechanical withdrawal threshold (MWT) was measured by von Frey filaments, and pain-related behavior was determined after operation by ultrasonic vocalization (USV) measurements. Indeed, we examined interferon-γ (IFN-γ) and interleukin-10 (IL-10) levels in the isolated dorsal root ganglia (DRG) following SNI in rats using an ELISA cytokine assay. MWT significantly increased 6 and 24 h after PI in rats receiving W. somnifera root extracts (100 and 300 mg/kg). Furthermore, the number of 22-27-kHz USV, which are a distress response, was significantly reduced at 6 and 24 h after PI in W. somnifera-treated rats (100 and 300 mg/kg). SNI-induced hyperalgesia and cytokine levels were significantly alleviated after treating with W. somnifera root extracts (100 and 300 mg/kg) for 15 continuous days. The main active compound, withaferin A, from the W. somnifera root extract has shown the CC chemokine family Receptor 2 (CCR2) antagonistic effects on monocyte chemoattractant protein-1 (MCP-1)-induced Ca2+ response in CCR2 stable cell line. These results indicate that W. somnifera root extract has a potential analgesic effect in rat models for both postoperative and neuropathic pain and shows potential as a drug or supplement for the treatment of pain.
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Singh H, Bhushan S, Arora R, Singh Buttar H, Arora S, Singh B. Alternative treatment strategies for neuropathic pain: Role of Indian medicinal plants and compounds of plant origin-A review. Biomed Pharmacother 2017; 92:634-650. [DOI: 10.1016/j.biopha.2017.05.079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 01/28/2023] Open
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Venditti A, Frezza C, Lorenzetti LM, Maggi F, Serafini M, Bianco A. Reassessment of the polar fraction of Stachys alopecuros (L.) Benth. subsp. divulsa (Ten.) Grande (Lamiaceae) from the Monti Sibillini National Park: A potential source of bioactive compounds. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2017; 6:144-153. [PMID: 28512595 PMCID: PMC5429073 DOI: 10.5455/jice.20170327073801] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/02/2017] [Indexed: 01/06/2023]
Abstract
BACKGROUND The phytochemical analysis of Stachys alopecuros subsp. divulsa, an endemic Italian species, has been recently reported and has showed the presence of 8-O-acetylharpagide (2), harpagide (3), allobetonicoside (4), and 4¢-O-galactopyranosyl-teuhircoside (5). In this paper, an in deep study of its glycosidic fraction with the aim to widen the knowledge on its secondary metabolites content is reported. MATERIALS AND METHODS Chromatographic techniques were used for the isolation of constituents while spectroscopic and spectrometric techniques were applied for the structures elucidation. RESULTS Besides the known constituents, all of them reconfirmed, ajugoside (1), reptoside (6) and 6-O-acetyl-ajugol (7) were also identified among the iridoids while the phenolic components resulted to be chlorogenic acid (8), b-arbutin (9), verbascoside (10), and stachysoside A (11), instead. CONCLUSION The iridoid pattern of S. alopecuros subsp. divulsa has been expanded with the identification of not previously reported compounds as well as for the phenolic fraction. Except for the reconfirmed verbascoside (10), the other phenolic compounds were recognized for the first time in the studied species. The complete NMR assignment of compound (1) by means of bidimensional techniques is reported, and both the chemotaxonomic and pharmacological relevance of the isolated compounds is largely discussed.
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Affiliation(s)
| | - Claudio Frezza
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | | | - Filippo Maggi
- School of Pharmacy, Università di Camerino, Camerino, Italy
| | - Mauro Serafini
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
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Pogatzki-Zahn EM, Segelcke D, Schug SA. Postoperative pain-from mechanisms to treatment. Pain Rep 2017; 2:e588. [PMID: 29392204 PMCID: PMC5770176 DOI: 10.1097/pr9.0000000000000588] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/04/2017] [Accepted: 02/06/2017] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Pain management after surgery continues to be suboptimal; there are several reasons including lack of translation of results from basic science studies and scientific clinical evidence into clinical praxis. OBJECTIVES This review presents and discusses basic science findings and scientific evidence generated within the last 2 decades in the field of acute postoperative pain. METHODS In the first part of the review, we give an overview about studies that have investigated the pathophysiology of postoperative pain by using rodent models of incisional pain up to July 2016. The second focus of the review lies on treatment recommendations based on guidelines and clinical evidence, eg, by using the fourth edition of the "Acute Pain Management: Scientific Evidence" of the Australian and New Zealand College of Anaesthetists and Faculty of Pain Medicine. RESULTS Preclinical studies in rodent models characterized responses of primary afferent nociceptors and dorsal horn neurons as one neural basis for pain behavior including resting pain, hyperalgesia, movement-evoked pain or anxiety- and depression-like behaviors after surgery. Furthermore, the role of certain receptors, mediators, and neurotransmitters involved in peripheral and central sensitization after incision were identified; many of these are very specific, relate to some modalities only, and are unique for incisional pain. Future treatment should focus on these targets to develop therapeutic agents that are effective for the treatment of postoperative pain as well as have few side effects. Furthermore, basic science findings translate well into results from clinical studies. Scientific evidence is able to point towards useful (and less useful) elements of multimodal analgesia able to reduce opioid consumption, improve pain management, and enhance recovery. CONCLUSION Understanding basic mechanisms of postoperative pain to identify effective treatment strategies may improve patients' outcome after surgery.
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Affiliation(s)
- Esther M. Pogatzki-Zahn
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital of Muenster, Muenster, Germany
| | - Daniel Segelcke
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital of Muenster, Muenster, Germany
| | - Stephan A. Schug
- Pharmacology, Pharmacy and Anaesthesiology Unit, School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
- Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
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Biazi BI, D'Epiro GFR, Zanetti TA, de Oliveira MT, Ribeiro LR, Mantovani MS. Risk Assessment via Metabolism and Cell Growth Inhibition in a HepG2/C3A Cell Line Upon Treatment with Arpadol and its Active Component Harpagoside. Phytother Res 2016; 31:387-394. [DOI: 10.1002/ptr.5757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 11/08/2016] [Accepted: 11/21/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Bruna Isabela Biazi
- Departamento de Biologia Geral, Centro de Ciências Biológicas; Universidade Estadual de Londrina-UEL; Rodovia Celso Garcia Cid, Pr 445 Km 380 Londrina Paraná Brazil
| | - Gláucia Fernanda Rocha D'Epiro
- Departamento de Biologia Geral, Centro de Ciências Biológicas; Universidade Estadual de Londrina-UEL; Rodovia Celso Garcia Cid, Pr 445 Km 380 Londrina Paraná Brazil
| | - Thalita Alves Zanetti
- Departamento de Biologia Geral, Centro de Ciências Biológicas; Universidade Estadual de Londrina-UEL; Rodovia Celso Garcia Cid, Pr 445 Km 380 Londrina Paraná Brazil
| | - Marcelo Tempesta de Oliveira
- Departamento de Biologia Geral, Centro de Ciências Biológicas; Universidade Estadual de Londrina-UEL; Rodovia Celso Garcia Cid, Pr 445 Km 380 Londrina Paraná Brazil
| | - Lucia Regina Ribeiro
- Departamento de Patologia, Faculdade de Medicina; Universidade Estadual Paulista; Av. Prof. Montenegro, Distrito de Rubião Junior Botucatu São Paulo Brazil
| | - Mário Sérgio Mantovani
- Departamento de Biologia Geral, Centro de Ciências Biológicas; Universidade Estadual de Londrina-UEL; Rodovia Celso Garcia Cid, Pr 445 Km 380 Londrina Paraná Brazil
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Lim DW, Kim JG, Kim YT. Analgesic Effect of Indian Gooseberry (Emblica officinalis Fruit) Extracts on Postoperative and Neuropathic Pain in Rats. Nutrients 2016; 8:nu8120760. [PMID: 27898027 PMCID: PMC5188415 DOI: 10.3390/nu8120760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/27/2016] [Accepted: 11/18/2016] [Indexed: 11/16/2022] Open
Abstract
Indian gooseberry (Emblica officinalis fruit), also known as “Amla” is one of the oldest edible fruits known in India. It has also traditionally been used to treat inflammation, and as an analgesic to treat wounds. However, experimental evidence for the analgesic effects of E. officinalis has been lacking. The present study investigated whether E. officinalis extracts exhibit analgesic effects in the plantar incision (PI) and spared nerve injury (SNI) pain-model rats. We evaluated the mechanical withdrawal threshold (MWT) using von Frey filaments, and pain-related behavior was determined after surgery based on ultrasonic vocalization (USV). The group treated with E. officinalis extracts at 300 mg/kg had significantly increased MWT values at 6 h and 24 h after the PI, and had a significantly reduced number of 22–27-kHz USVs at 6 h and 24 h after PI. Moreover, after 15 days of continuous treatment with E. officinalis extracts, the treated group showed significantly alleviated SNI-induced hypersensitivity and reduced pro-inflammatory cytokine levels. Thus, E. officinalis extracts have potential analgesic effects in both postoperative and neuropathic pain models in vivo.
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Affiliation(s)
- Dong Wook Lim
- Research Group of Innovative Special Food, Korea Food Research Institute, 62, Anyangpangyo-ro, Bundang-gu, Seongnam 13539, Korea.
| | - Jae Goo Kim
- Research Group of Innovative Special Food, Korea Food Research Institute, 62, Anyangpangyo-ro, Bundang-gu, Seongnam 13539, Korea.
| | - Yun Tai Kim
- Research Group of Innovative Special Food, Korea Food Research Institute, 62, Anyangpangyo-ro, Bundang-gu, Seongnam 13539, Korea.
- Department of Food Biotechnology, Korea University of Science & Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea.
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Food-Derived Natural Compounds for Pain Relief in Neuropathic Pain. BIOMED RESEARCH INTERNATIONAL 2016; 2016:7917528. [PMID: 27891521 PMCID: PMC5116524 DOI: 10.1155/2016/7917528] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/29/2016] [Accepted: 10/16/2016] [Indexed: 12/17/2022]
Abstract
Neuropathic pain, defined as pain caused by a lesion or disease of the somatosensory nervous system, is characterized by dysesthesia, hyperalgesia, and allodynia. The number of patients with this type of pain has increased rapidly in recent years. Yet, available neuropathic pain medicines have undesired side effects, such as tolerance and physical dependence, and do not fully alleviate the pain. The mechanisms of neuropathic pain are still not fully understood. Injury causes inflammation and immune responses and changed expression and activity of receptors and ion channels in peripheral nerve terminals. Additionally, neuroinflammation is a known factor in the development and maintenance of neuropathic pain. During neuropathic pain development, the C-C motif chemokine receptor 2 (CCR2) acts as an important signaling mediator. Traditional plant treatments have been used throughout the world for treating diseases. We and others have identified food-derived compounds that alleviate neuropathic pain. Here, we review the natural compounds for neuropathic pain relief, their mechanisms of action, and the potential benefits of natural compounds with antagonistic effects on GPCRs, especially those containing CCR2, for neuropathic pain treatment.
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Alteration of Neutrophil Reactive Oxygen Species Production by Extracts of Devil's Claw (Harpagophytum). OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:3841803. [PMID: 27429708 PMCID: PMC4939354 DOI: 10.1155/2016/3841803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 05/29/2016] [Indexed: 02/02/2023]
Abstract
Harpagophytum, Devil's Claw, is a genus of tuberiferous xerophytic plants native to southern Africa. Some of the taxa are appreciated for their medicinal effects and have been traditionally used to relieve symptoms of inflammation. The objectives of this pilot study were to investigate the antioxidant capacity and the content of total phenols, verbascoside, isoverbascoside, and selected iridoids, as well as to investigate the capacity of various Harpagophytum taxa in suppressing respiratory burst in terms of reactive oxygen species produced by human neutrophils challenged with phorbol myristate acetate (PMA), opsonised Staphylococcus aureus, and Fusobacterium nucleatum. Harpagophytum plants were classified into different taxa according to morphology, and DNA analysis was used to confirm the classification. A putative new variety of H. procumbens showed the highest degree of antioxidative capacity. Using PMA, three Harpagophytum taxa showed anti-inflammatory effects with regard to the PBS control. A putative hybrid between H. procumbens and H. zeyheri in contrast showed proinflammatory effect on the response of neutrophils to F. nucleatum in comparison with treatment with vehicle control. Harpagophytum taxa were biochemically very variable and the response in suppressing respiratory burst differed. Further studies with larger number of subjects are needed to corroborate anti-inflammatory effects of different taxa of Harpagophytum.
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Hamed EA, Mohamed Farghaly HS, Abdel Mola AF, Fahmi MK, Makhlouf MM, Balfas MA. Role of monocyte chemoattractant protein-1, stromal derived factor-1 and retinoic acid in pathophysiology of neuropathic pain in rats. J Basic Clin Physiol Pharmacol 2016; 27:411-24. [PMID: 26974138 DOI: 10.1515/jbcpp-2015-0105] [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] [Received: 08/29/2015] [Accepted: 12/30/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Chemokines have been recently recognized to play a role in chronic pain syndromes' pathophysiology. This study investigated the role of monocyte chemoattractant protein-1 (MCP-1), stromal cell derived factor-1 (SDF-1), and retinoic acid (RA) as targets for the therapeutic approach of neuropathic pain. METHODS A chronic constriction injury (CCI) model of neuropathic pain by unilateral ligation of left sciatic nerve was performed in adult female Wistar rats. The effects of doxycycline (Dox, 50 mg/kg/day i.p. for 7 days), single dose of bicyclam (5 mg/kg i.p.), RA (15 mg/kg/day i.p. for 7 days), and their combination(s) on behavioral tests of nociception (Von Frey filaments; paw pressure test) on days 0, 1, 3, 5, and 7 of operation were studied. Serum concentrations of MCP-1 and SDF-1 were measured by ELISA. Histological examination of the sciatic nerve was investigated. RESULTS CCI of sciatic nerve significantly induced mechanical allodynia and hyperalgesia and an increase of MCP-1 and SDF-1 serum levels. Dox-treated groups (Dox, Dox+bicyclam, Dox+RA, Dox+bicyclam+RA) and bicyclam-treated groups (bicyclam, Dox+bicyclam, bicyclam+RA, Dox+bicyclam+RA) attenuated CCI-induced behavioral and biochemical changes. RA inhibited CCI-induced mechanical hyperalgesia but produced a time-dependent reversal of allodynia. Histological findings showed degenerative changes of sciatic nerve after CCI that were partially recovered in Dox-treated groups. CONCLUSIONS These findings demonstrate an association between serum MCP-1 and SDF-1 concentrations and behavioral manifestations of neuropathic pain. RA administration decreased neuropathic pain (antihyperalgesic effect) but did not cause any improvement in sciatic nerve tissues, either alone or in combination with chemokine antagonists. Thus, chemokines may serve as potential targets for drug development in neuropathic pain treatment.
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Involvement of the Heme-Oxygenase Pathway in the Antiallodynic and Antihyperalgesic Activity of Harpagophytum procumbens in Rats. Molecules 2015; 20:16758-69. [PMID: 26389871 PMCID: PMC6331854 DOI: 10.3390/molecules200916758] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/26/2015] [Accepted: 09/08/2015] [Indexed: 12/20/2022] Open
Abstract
Harpagophytum procumbens (H. procumbens), also known as Devil’s Claw, has been used to treat a wide range of pathological conditions, including pain, arthritis and inflammation. Inflammatory mediators, released at the site of injury, can sensitize nociceptive terminals and are responsible for allodynia and hyperalgesia. Carbon monoxide (CO), produced in a reaction catalyzed by the enzyme heme oxygenase (HO), may play a role in nociceptive processing and has also been recognized to act as a neurotransmitter or neuromodulator in the nervous system. This study was designed to investigate whether the HO/CO pathway is involved in the analgesic response of H. procumbens in carrageenan-induced hyperalgesia in rats. Mechanical allodynia and thermal hyperalgesia were evaluated by using von Frey filaments and the plantar test, respectively. The results of our experiments showed that pretreatment with the HO inhibitor ZnPP IX significantly decreased the antihyperalgesic effect produced by H. procumbens (800 mg/kg, i.p.) in carrageenan-injected rats. Consistently, the pretreatment with hemin, a HO-1 substrate, or CORM-3, a CO releasing molecule, before a low dose of H. procumbens (300 mg/kg, i.p.) induced a clear antiallodynic response in carrageenan injected rats. These results suggest the involvement of HO-1/CO system in the antiallodynic and antihyperalgesic effect of H. procumbens in carrageenan-induced inflammatory pain.
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Parenti C, Aricò G, Pennisi M, Venditti A, Scoto GM. Harpagophytum procumbens extract potentiates morphine antinociception in neuropathic rats. Nat Prod Res 2015; 30:1248-55. [PMID: 26189616 DOI: 10.1080/14786419.2015.1052069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The association of opioids and non-steroidal anti-inflammatory drugs, to enhance pain relief and reduce the development of side effects, has been demonstrated. Given many reports concerning the antinociceptive and anti-inflammatory effects of Harpagophytum procumbens extracts, the aim of our study was to investigate the advantage of a co-administration of a subanalgesic dose of morphine preceded by a low dose of H. procumbens to verify this therapeutically useful association in a neuropathic pain model. Time course, registered with the association of the natural extract, at a dose that does not induce an antinociceptive effect, followed by a subanalgesic dose of morphine showed a well-defined antiallodynic and antihyperalgesic effect, suggesting a synergism as a result of the two-drug association. H. procumbens cooperates synergistically with morphine in resolving hyperalgesia and allodynia, two typical symptoms of neuropathic pain. The results support the strategy of using an adjuvant drug to improve opioid analgesic efficacy.
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Affiliation(s)
- Carmela Parenti
- a Pharmacology and Toxicology Section, Department of Drug Sciences , University of Catania , Catania , Italy
| | - Giuseppina Aricò
- b Medicinal Chemistry Section, Department of Drug Sciences , University of Catania , Catania , Italy
| | - Marzio Pennisi
- c Department of Mathematics and Computer Science , University of Catania , Viale A. Doria 6, 95125 Catania , Italy
| | - Alessandro Venditti
- d Department of Chemistry , "Sapienza" University of Rome , P.le A. Moro 5, 00185 Rome , Italy.,e Department of Environmental Biology , "Sapienza" University of Rome , P.le A. Moro 5, 00185 Rome , Italy
| | - Giovanna M Scoto
- a Pharmacology and Toxicology Section, Department of Drug Sciences , University of Catania , Catania , Italy
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Lim DW, Kim JG, Han T, Jung SK, Lim EY, Han D, Kim YT. Analgesic Effect of Ilex paraguariensis Extract on Postoperative and Neuropathic Pain in Rats. Biol Pharm Bull 2015; 38:1573-9. [DOI: 10.1248/bpb.b15-00360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Dong Wook Lim
- Research Group of Innovative Special Food, Korea Food Research Institute
| | - Jae Goo Kim
- Research Group of Innovative Special Food, Korea Food Research Institute
| | - Taewon Han
- Research Group of Innovative Special Food, Korea Food Research Institute
| | - Sung Keun Jung
- Research Group of Nutraceuticals for Metabolic Syndrome, Korea Food Research Institute
- Department of Food Biotechnology, Korea University of Science & Technology
| | - Eun Yeong Lim
- Research Group of Innovative Special Food, Korea Food Research Institute
- Department of Food Biotechnology, Korea University of Science & Technology
| | - Daeseok Han
- Research Group of Innovative Special Food, Korea Food Research Institute
| | - Yun Tai Kim
- Research Group of Innovative Special Food, Korea Food Research Institute
- Department of Food Biotechnology, Korea University of Science & Technology
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Simola N. Rat Ultrasonic Vocalizations and Behavioral Neuropharmacology: From the Screening of Drugs to the Study of Disease. Curr Neuropharmacol 2015; 13:164-79. [PMID: 26411760 PMCID: PMC4598429 DOI: 10.2174/1570159x13999150318113800] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/12/2014] [Accepted: 10/14/2014] [Indexed: 12/14/2022] Open
Abstract
Several lines of evidence indicate that rats emit ultrasonic vocalizations (USVs) in response to a wide range of stimuli that are capable of producing either euphoric (positive) or dysphoric (negative) emotional states. On these bases, recordings of USVs are extensively used in preclinical studies of affect, motivation, and social behavior. Rat USVs are sensitive to the effects of certain classes of psychoactive drugs, suggesting that emission of rat USVs can have relevance not only to neurobiology, but also to neuropharmacology and psychopharmacology. This review summarizes three types of rat USVs, namely 40-kHz USVs emitted by pups, 22-kHz USVs and 50-kHz USVs emitted by young and adult animals, and relevance of these vocalizations to neuropharmacological studies. Attention will be focused on the issues of how rat USVs can be used to evaluate the pharmacological properties of different classes of drugs, and how rat USVs can be combined with other behavioral models used in neuropharmacology. The strengths and limitations of experimental paradigms based on the evaluation of rat USVs will also be discussed.
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Affiliation(s)
- Nicola Simola
- Department of Biomedical Sciences, Section of Neuropsychopharmacology, University of Cagliari, Via Ospedale, 72, 09124, Cagliari, Italy.
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Kim JG, Lim DW, Cho S, Han D, Kim YT. The edible brown seaweed Ecklonia cava reduces hypersensitivity in postoperative and neuropathic pain models in rats. Molecules 2014; 19:7669-78. [PMID: 24918539 PMCID: PMC6271726 DOI: 10.3390/molecules19067669] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/20/2014] [Accepted: 06/03/2014] [Indexed: 12/29/2022] Open
Abstract
The current study was designed to investigate whether edible brown seaweed Ecklonia cava extracts exhibits analgesic effects in plantar incision and spared nerve injury (SNI) rats. To evaluate pain-related behavior, we performed the mechanical withdrawal threshold (MWT) and thermal hypersensitivity tests measured by von Frey filaments and a hot/cold plate analgesia meter. Pain-related behavior was also determined through analysis of ultrasonic vocalization. The results of experiments showed MWT values of the group that was treated with E. cava extracts by 300 mg/kg significantly increased; on the contrary, number of ultrasonic distress vocalization of the treated group was reduced at 6 h and 24 h after plantar incision operation (62.8%, p < 0.05). Moreover, E. cava 300 mg/kg treated group increased the paw withdrawal latency in hot-and cold-plate tests in the plantar incision rats. After 15 days of continuous treatment with E. cava extracts at 300 mg/kg, the treated group showed significantly alleviated SNI-induced hypersensitivity response by MWT compared with the control group. In conclusion, these results suggest that E. cava extracts have potential analgesic effects in the case of postoperative pain and neuropathic pain in rats.
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Affiliation(s)
- Jae Goo Kim
- Food Resource Research Center, Korea Food Research Institute, Seongnam 463-746, Korea.
| | - Dong Wook Lim
- Food Resource Research Center, Korea Food Research Institute, Seongnam 463-746, Korea.
| | - Suengmok Cho
- Food Resource Research Center, Korea Food Research Institute, Seongnam 463-746, Korea.
| | - Daeseok Han
- Food Resource Research Center, Korea Food Research Institute, Seongnam 463-746, Korea.
| | - Yun Tai Kim
- Research Group of Food Functionality, Korea Food Research Institute, Seongnam 463-746, Korea.
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