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Starinets A, Ponomarenko A, Tyrtyshnaia A, Manzhulo I. Synaptamide modulates glial and neurotransmitter activity in the spinal cord during neuropathic pain. J Chem Neuroanat 2023; 134:102361. [PMID: 37935251 DOI: 10.1016/j.jchemneu.2023.102361] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
N-docosahexaenoylethanolamine, or synaptamide, is an endogenous metabolite of docosahexaenoic acid that is known for synaptogenic and neurogenic effects. In our previous studies we have shown that synaptamide attenuates neuropathic pain, facilitates remyelination, and reduces neuroinflammation after the chronic constriction injury (CCI) of the sciatic nerve in rats. In the current study, we show that daily synaptamide administration (4 mg/kg/day) within 14 days post-surgery: (1) decreases micro- and astroglia activity in the dorsal and ventral horns of the lumbar spinal cord; (2) modulates pro-inflammatory (IL1β, IL6) and anti-inflammatory (IL4, IL10) cytokine level in the serum and spinal cord; (3) leads to a rise in synaptamide and anandamide concentration in the spinal cord; (4) enhances IL10, CD206 and N-acylethanolamine-hydrolyzing acid amidase synthesis in macrophage cell culture following LPS-induced inflammation. Thus, the ability of synaptamide to modulate glial and cytokine activity indicates its potential for implementation in the treatment peripheral nerve injury.
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Affiliation(s)
- Anna Starinets
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Arina Ponomarenko
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Anna Tyrtyshnaia
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Igor Manzhulo
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia.
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2
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Nakamoto K, Tokuyama S. Stress-Induced Changes in the Endogenous Opioid System Cause Dysfunction of Pain and Emotion Regulation. Int J Mol Sci 2023; 24:11713. [PMID: 37511469 PMCID: PMC10380691 DOI: 10.3390/ijms241411713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/13/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Early life stress, such as child abuse and neglect, and psychosocial stress in adulthood are risk factors for psychiatric disorders, including depression and anxiety. Furthermore, exposure to these stresses affects the sensitivity to pain stimuli and is associated with the development of chronic pain. However, the mechanisms underlying the pathogenesis of stress-induced depression, anxiety, and pain control remain unclear. Endogenous opioid signaling is reportedly associated with analgesia, reward, addiction, and the regulation of stress responses and anxiety. Stress alters the expression of various opioid receptors in the central nervous system and sensitivity to opioid receptor agonists and antagonists. μ-opioid receptor-deficient mice exhibit attachment disorders and autism-like behavioral expression patterns, while those with δ-opioid receptor deficiency exhibit anxiety-like behavior. In contrast, deficiency and antagonists of the κ-opioid receptor suppress the stress response. These findings strongly suggest that the expression and dysfunction of the endogenous opioid signaling pathways are involved in the pathogenesis of stress-induced psychiatric disorders and chronic pain. In this review, we summarize the latest basic and clinical research studies on the effects of endogenous opioid signaling on early-life stress, psychosocial stress-induced psychiatric disorders, and chronic pain.
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Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
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3
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Gambari L, Cellamare A, Grassi F, Grigolo B, Panciera A, Ruffilli A, Faldini C, Desando G. Targeting the Inflammatory Hallmarks of Obesity-Associated Osteoarthritis: Towards Nutraceutical-Oriented Preventive and Complementary Therapeutic Strategies Based on n-3 Polyunsaturated Fatty Acids. Int J Mol Sci 2023; 24:ijms24119340. [PMID: 37298291 DOI: 10.3390/ijms24119340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity (Ob), which has dramatically increased in the last decade, is one of the main risk factors that contribute to the incidence and progression of osteoarthritis (OA). Targeting the characteristics of obesity-associated osteoarthritis (ObOA) may offer new chances for precision medicine strategies in this patient cohort. First, this review outlines how the medical perspective of ObOA has shifted from a focus on biomechanics to the significant contribution of inflammation, mainly mediated by changes in the adipose tissue metabolism through the release of adipokines and the modification of fatty acid (FA) compositions in joint tissues. Preclinical and clinical studies on n-3 polyunsaturated FAs (PUFAs) are critically reviewed to outline the strengths and weaknesses of n-3 PUFAs' role in alleviating inflammatory, catabolic and painful processes. Emphasis is placed on potential preventive and therapeutic nutritional strategies based on n-3 PUFAs, with a focus on ObOA patients who could specifically benefit from reformulating the dietary composition of FAs towards a protective phenotype. Finally, tissue engineering approaches that involve the delivery of n-3 PUFAs directly into the joint are explored to address the perspectives and current limitations, such as safety and stability issues, for implementing preventive and therapeutic strategies based on dietary compounds in ObOA patients.
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Affiliation(s)
- Laura Gambari
- Laboratorio Ramses, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
| | - Antonella Cellamare
- Laboratorio Ramses, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
| | - Francesco Grassi
- Laboratorio Ramses, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
| | - Brunella Grigolo
- Laboratorio Ramses, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
| | - Alessandro Panciera
- 1st Orthopedic and Traumatology Clinic, IRCCS Istituto Ortopedico Rizzoli, via G.C. Pupilli 1, 40136 Bologna, Italy
| | - Alberto Ruffilli
- 1st Orthopedic and Traumatology Clinic, IRCCS Istituto Ortopedico Rizzoli, via G.C. Pupilli 1, 40136 Bologna, Italy
| | - Cesare Faldini
- 1st Orthopedic and Traumatology Clinic, IRCCS Istituto Ortopedico Rizzoli, via G.C. Pupilli 1, 40136 Bologna, Italy
| | - Giovanna Desando
- Laboratorio Ramses, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
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4
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Starinets A, Tyrtyshnaia A, Manzhulo I. Anti-Inflammatory Activity of Synaptamide in the Peripheral Nervous System in a Model of Sciatic Nerve Injury. Int J Mol Sci 2023; 24:ijms24076273. [PMID: 37047247 PMCID: PMC10093792 DOI: 10.3390/ijms24076273] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 03/29/2023] Open
Abstract
N-docosahexaenoylethanolamine (DHEA), or synaptamide, is an endogenous metabolite of docosahexaenoic acid (DHA) that exhibits synaptogenic and neurogenic effects. In our previous studies, synaptamide administration inhibited the neuropathic pain-like behavior and reduced inflammation in the central nervous system following sciatic nerve injury. In the present study, we examine the effect of synaptamide on the peripheral nervous system in a neuropathic pain condition. The dynamics of ionized calcium-binding adapter molecule 1 (iba-1), CD68, CD163, myelin basic protein, and the production of interleukin 1β and 6 within the sciatic nerve, as well as the neuro-glial index and the activity of iba-1, CD163, glial fibrillary acidic protein (GFAP), neuronal NO synthase (nNOS), substance P (SP), activating transcription factor 3 (ATF3) in the dorsal root ganglia (DRG), are studied. According to our results, synaptamide treatment (4 mg/kg/day) (1) decreases the weight-bearing deficit after nerve trauma; (2) enhances the remyelination process in the sciatic nerve; (3) shows anti-inflammatory properties in the peripheral nervous system; (4) decreases the neuro-glial index and GFAP immunoreactivity in the DRG; (5) inhibits nNOS- and SP-ergic activity in the DRG, which might contribute to neuropathic pain attenuation. In general, the current study demonstrates the complex effect of synaptamide on nerve injury, which indicates its high potential for neuropathic pain management.
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Manivasakam P, Ravi A, Ramesh J, Bhuvarahamurthy D, Kasirajan K, Vijayapoopathi S, Venugopal B, Fliri AF. Autophagy: An Emerging Target for Developing Effective Analgesics. ACS OMEGA 2023; 8:9445-9453. [PMID: 36936313 PMCID: PMC10018516 DOI: 10.1021/acsomega.2c06949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Inadequate treatment of acute and chronic pain causes depression, anxiety, sleep disturbances, and increased mortality. Abuse and overdose of opioids and the side effects associated with chronic use of NSAID illustrate the need for development of safer and effective pain medication. Working toward this end, an in silico tool based on an emergent intelligence analytical platform that examines interactions between protein networks was used to identify molecular mechanisms involved in regulating the body's response to painful stimuli and drug treatments. Examining interactions between protein networks associated with the expression of over 20 different pain types suggests that the regulation of autophagy plays a central role in modulation of pain symptoms (see Materials and Methods). Using the topology of this regulatory scheme as an in silico screening tool, we identified that combinations of functions targeted by cannabidiol, myo-inositol, and fish oils with varying ratios of eicosapentaenoic and docosahexaenoic acids are projected to produce superior analgesia. For validating this prediction, we administered combinations of cannabidiol, myo-inositol, and fish oils to rats that received formalin injections in hind paws, prior to substance administration, and showed that analgesic effects produced by these combinations were comparable or superior to known NSAID analgesics, which suggests that these combinations have potential in treatment of pain.
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Affiliation(s)
| | - Atchayaa Ravi
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Janani Ramesh
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
- Renal
Division, Brigham and Women’s Hospital,
BWH, Boston, Massachusetts 02115-6195, United
States
| | | | - Kalaiyarasi Kasirajan
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Singaravel Vijayapoopathi
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
| | - Bhuvarahamurthy Venugopal
- Department
of Medical Biochemistry, Dr. A.L.M. Postgraduate
Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600113, Tamil
Nadu, India
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Gundogdu G, Tasci SY, Gundogdu K, Kapakin KAT, Demirkaya AK, Nalci KA, Gundogdu M, Hacimuftuoglu A, Abd El-Aty AM. A combination of omega-3 and exercise reduces experimental Achilles tendinopathy induced with a type-1 collagenase in rats. Appl Physiol Nutr Metab 2023; 48:62-73. [PMID: 36458821 DOI: 10.1139/apnm-2021-0801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
This study aimed to evaluate the effectiveness of omega-3 supplementation with exercise in a collagenase-induced Achilles tendinopathy (AT) rat model. Experimental groups (healthy control (HC), AT, exercise (Ex), omega-3 (W), and Ex+W) were randomly allocated. After a week of adaptation, oral omega-3 was initiated for 8 weeks (5 days/week). The exercise groups performed treadmill running for 30 min/day (5 days/week, 20 m/min, 8 weeks) following one week of adaptation (10 m/min, 15 min/day). Matrix metalloproteinase-13 (MMP-13), interleukin-1 beta (IL-1β), tumor necrosis factor-alpha (TNF-α), and total antioxidant-oxidant status (TAS) levels were determined in serum samples. Tendon samples were obtained for biomechanical, histopathological, and immunohistochemical assessments. Ultimate tensile force, yield force, stiffness values, collagen type-I alpha 1 expression, and serum TAS significantly decreased (P < 0.05) in AT vs. HC. These values and expression significantly increased in the Ex+W group vs. AT. Serum MMP-13, IL-1β, and TNF-α levels decreased in all treatment groups vs. AT. The most significant decrease was found in the Ex+W group (P < 0.01). Histopathologically, the improvement in degeneration was statistically significant in the Ex+W group (P < 0.05). Immunohistochemically, MMP-13, IL-1β, TNF-α, and nitric oxide synthase-2 expression was decreased in all treatment groups vs. AT. In conclusion, omega-3 and exercise might be recommended in AT patients.
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Affiliation(s)
- Gulsah Gundogdu
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli 20100, Turkey
| | - Seymanur Yilmaz Tasci
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey
| | - Koksal Gundogdu
- Department of Orthopedics and Traumatology, Denizli State Hospital, Denizli 20010, Turkey
| | - Kubra Asena Terim Kapakin
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Atatürk University, Erzurum 20240, Turkey
| | - Alper Kursat Demirkaya
- Department of Food Processing, Vocational School, Bilecik Seyh Edebali University, Bilecik 11230, Turkey
| | - Kemal Alp Nalci
- Department of Pharmacy, Faculty of Pharmacy, Van Yüzüncü Yıl University, Van 65080, Turkey
| | - Mustafa Gundogdu
- Department of Prosthetic Dentistry, Faculty of Dentistry, Izmır Democracy University, İzmir 35140, Turkey
| | - Ahmet Hacimuftuoglu
- Department of Medical Pharmacy, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey
| | - A M Abd El-Aty
- Department of Medical Pharmacy, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey.,Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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β-caryophyllene and docosahexaenoic acid, isolated or associated, have potential antinociceptive and anti-inflammatory effects in vitro and in vivo. Sci Rep 2022; 12:19199. [PMID: 36357780 PMCID: PMC9649594 DOI: 10.1038/s41598-022-23842-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Inflammation is a complex biological response involving the immune, autonomic, vascular, and somatosensory systems that occurs through the synthesis of inflammatory mediators and pain induction by the activation of nociceptors. Staphylococcus aureus, the main cause of bacteremia, is one of the most common and potent causes of inflammation in public health, with worse clinical outcomes in hospitals. Antioxidant substances have been evaluated as alternative therapeutic analgesics, antioxidants, anti-inflammatory agents, antitumor agents, and bactericides. Among these, we highlight the essential oils of aromatic plants, such as β-caryophyllene (BCP), and polyunsaturated fatty acids, such as docosahexaenoic acid (DHA). The objective of this study was to evaluate the biological activities of BCP-DHA association in in vitro and in vivo experimental models of antinociception and inflammation. To determine the anti-inflammatory effects, monocytes isolated from the peripheral blood of adult male volunteers were infected with methicillin-resistant S. aureus and incubated with treatment for cytokine dosage and gene expression analysis. Antinociceptive effects were observed in the three models when comparing the control (saline) and the BCP-DHA treatment groups. For this purpose, the antinociceptive effects were evaluated in animal models using the following tests: acetic acid-induced abdominal writhing, paw edema induced by formalin intraplantar injection, and von Frey hypernociception. There was a significant reduction in the GM-CSF, TNFα, IL-1, IL-6, and IL-12 levels and an increase in IL-10 levels in the BCP-DHA treatment groups, in addition to negative regulation of the expression of the genes involved in the intracellular inflammatory signaling cascade (IL-2, IL-6, IRF7, NLRP3, and TYK2) in all groups receiving treatment, regardless of the presence of infection. Statistically significant results (p < 0.05) were obtained in the acetic acid-induced abdominal writhing test, evaluation of paw edema, evaluation of paw flinching and licking in the formalin intraplantar injection model, and the von Frey hypernociception test. Therefore, BCP and DHA, either administered individually or combined, demonstrate potent anti-inflammatory and antinociceptive effects.
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8
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Gundogdu K, Yilmaz Tasci S, Gundogdu G, Terim Kapakin KA, Totik Y, Demirkaya Miloglu F. Evaluation of cytokines in protective effect of docosahexaenoic acid in experimental achilles tendinopathy rat model induced with type-1 collagenase. Connect Tissue Res 2022; 63:393-405. [PMID: 34612118 DOI: 10.1080/03008207.2021.1982915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND We aimed to investigate the effectiveness of docosahexaenoic acid (DHA) as a treatment for Achilles tendinopathy (AT) induced with type-I collagenase in rats and compare it with collagen. METHODS The AT model was induced with type I collagenase, and animals were randomly assigned to groups. Group 1:AT, Group 2: Collagen (7.2 mg/kg/day), Group 3:DHA (300 mg/kg/day), and Group 4:DHA (100 mg/kg/day). Right tendons of Group1 were used as a healthy control (HC). Oral treatments were applied for eight weeks. Serum tumor necrosis factor-alpha(TNF-α), matrix metalloproteinase-13 (MMP-13), and interleukin-1 beta(IL-1β) concentrations were determined by ELISA. Tendon samples were taken for histopathological evaluation and examined immunohistochemically with antibodies specific for Col1A1, TNF-α, MMP-13, IL-1β, and nitric oxide synthase-2(NOS-2). The ultimate tensile force (UTF) yield force(YF) and stiffness were measured by biomechanical assessments. RESULTS UTF,YF and stiffness values were increased in all treatment groups compared to the AT control, a significant increase was found in Group 2 (p < 0.05). There was severe degeneration of tendon cells in the AT control. The tendon cells in samples from Groups 2-3 were less degraded, and this was statistically significant (p < 0.05). TNF-α, MMP-13, IL-1β, and NOS-2 expressions were significantly higher in the AT control compared to the HC. In all treatment groups, their concentrations were lower than in the AT control. Serum TNF-α, MMP-13, and IL-1β levels were lower in all treatment groups (Especially in Group3 (p < 0.001)) compared to Group1. CONCLUSION The efficacy of high-dose DHA as a treatment for AT was investigated from biochemical, histopathological, and biomechanical perspectives. The results showed that DHA could be an alternative treatment compound to collagen.
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Affiliation(s)
- Koksal Gundogdu
- Department of Orthopedics and Traumatology, Denizli State Hospital, Denizli, Turkey
| | | | - Gulsah Gundogdu
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Kubra Asena Terim Kapakin
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Yasar Totik
- Department of Machine Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey
| | - Fatma Demirkaya Miloglu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
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Widyadharma IPE, Dewi VT, Wijayanti IAS, Santosa KB. Efficacy and safety of oral pharmacological and supplementary therapies in bladder pain syndrome: a systematic review. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2022. [DOI: 10.1186/s41983-022-00490-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractTreatment goals in bladder pain syndrome (BPS) or interstitial cystitis (IC) focusing on relieving symptoms to improve quality of life and avoiding adverse events (AEs) since curative treatment for BPS/IC is not available. The readily available pharmacologic options for BPS/IC including oral, intravesical, and transdermal therapy. The purpose of this study is to review randomized trial studies over the last 15 years examining the efficacy and safety of oral pharmacological and supplementary therapies for BPS/IC. A systematic search was conducted in PubMed and Medline Library. Only randomized-controlled trials and randomized comparative trials published between 2005 and 2020 on the efficacy and safety of oral therapies for BPS/IC were included. The keywords used were “bladder pain syndrome”, or “interstitial cystitis”, and “random” or “trial”. From 629 articles, nine were included in this review. Oral therapies included consist of cyclosporine A (CyA), amitriptyline, amitriptyline plus alpha lipoic acid (ALA) and omega-3 fatty acids (n-3 PUFA), PD-0299685, sildenafil, pentosan polysulfate sodium (PPS), AQX-1125, and hydrogen-rich water. Among retrieved trials, amitriptyline in combination with ALA and n-3 PUFA, sildenafil, and cyclosporine A proved their efficacy for BPS/IC. Sildenafil was generally well tolerated, while amitriptyline and CyA must be used with caution, the supplementation of ALA/n-3 PUFAs possibly lower dosage of amitriptyline, subsequently reduce its AEs. CyA was superior to PPS but possessed greater AEs. Further studies focusing on etiopathology and phenotype differentiation of this syndrome will greatly contribute to the development of effective therapy.
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Tachibana D, Nakamoto K, Tokuyama S. Changes in median eminence of fatty acid-binding protein 3 in a mouse model of pain. Neuropsychopharmacol Rep 2022; 42:52-58. [PMID: 35090101 PMCID: PMC8919114 DOI: 10.1002/npr2.12225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 12/02/2021] [Accepted: 12/09/2021] [Indexed: 11/09/2022] Open
Abstract
AIMS Fatty acid-binding protein (FABP) regulates polyunsaturated fatty acid (PUFA) intracellular trafficking and signal transduction. Our previous studies demonstrated that the alteration of PUFA in the hypothalamus is involved in pain process. However, how FABP subtypes change during pain remain unclear. Here, we examined the expression changes and localization in the hypothalamic FABP subtype in postoperative pain model mice. METHODS Paw incision-induced postoperative methods were adopted as a pain model in male ddY mice. Mechanical allodynia was examined using the von Frey test. The analysis of several FABPs mRNA was measured by real-time PCR, and cellular localization of its protein level was measured by immunofluorescent study. RESULTS Postoperative pain mouse elicited mechanical allodynia on Day 2 after paw incision, and mRNA expression of FABP3 increased significantly in the hypothalamus in the postoperative pain mouse model compared to that in control mice. FABP3 protein expressed in the median eminence and the arcuate nucleus, and colocalized with Iba-1, which is a microglial cell marker. Its protein level significantly increased in the median eminence on Day 2 after incision and returned to the control level on Day 4 after incision. CONCLUSIONS Our findings indicate that FABP3 in the median eminence may change in pain stimuli and may represent a molecular link controlling pain.
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Affiliation(s)
- Dan Tachibana
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
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TRAF6 Contributes to CFA-Induced Spinal Microglial Activation and Chronic Inflammatory Pain in Mice. Cell Mol Neurobiol 2021; 42:1543-1555. [PMID: 33694132 DOI: 10.1007/s10571-021-01045-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/15/2021] [Indexed: 12/23/2022]
Abstract
Tumor necrosis factor receptor-associated factor 6 (TRAF6) has been reported to be expressed in spinal astrocytes and is involved in neuropathic pain. In this study, we investigated the role and mechanism of TRAF6 in complete Freund's adjuvant (CFA)-evoked chronic inflammatory hypersensitivity and the effect of docosahexaenoic acid (DHA) on TRAF6 expression and inflammatory pain. We found that TRAF6 was dominantly increased in microglia at the spinal level after intraplantar injection of CFA. Intrathecal TRAF6 siRNA alleviated CFA-triggered allodynia and reversed the upregulation of IBA-1 (microglia marker). In addition, intrathecal administration of DHA inhibited CFA-induced upregulation of TRAF6 and IBA-1 in the spinal cord and attenuated CFA-evoked mechanical allodynia. Furthermore, DHA prevented lipopolysaccharide (LPS)-caused increase of TRAF6 and IBA-1 in both BV2 cell line and primary cultured microglia. Finally, intrathecal DHA reduced LPS-induced upregulation of spinal TRAF6 and IBA-1, and alleviated LPS-induced mechanical allodynia. Our findings indicate that TRAF6 contributes to pain hypersensitivity via regulating microglial activation in the spinal dorsal horn. Direct inhibition of TRAF6 by siRNA or indirect inhibition by DHA may have therapeutic effects on chronic inflammatory pain.
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Sánchez-Trigueros MI, Méndez-Cruz F, Pineda-Peña EA, Rivera-Espinoza Y, Castañeda-Hernández G, Chávez-Piña AE. Synergistic protective effects between docosahexaenoic acid and omeprazole on the gastrointestinal tract in the indomethacin-induced injury model. Drug Dev Res 2020; 82:543-552. [PMID: 33319390 DOI: 10.1002/ddr.21772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/04/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are the most commonly used drugs due to their antipyretic, anti-inflammatory, and analgesic properties. However, NSAIDs can cause adverse reactions, mainly gastrointestinal damage. Omeprazole (OMP) exhibits gastroprotective activity, but its protection is limited at the intestinal level. For this reason, it is essential to utilize a combination of therapies that provide fewer adverse effects, such as the combined treatment of OMP and docosahexaenoic acid (DHA), an omega-3 polyunsaturated fatty acid with anti-inflammatory, analgesic, and gastroprotective activities. The objective of this study was to evaluate the pharmacological interaction between DHA and OMP in a murine model of indomethacin-induced gastrointestinal damage. The gastroprotective and enteroprotective effects of DHA (0.3-10 mg/kg, p.o.), OMP (1-30 mg/kg, p.o.), or the combination treatment of both compounds (3-56.23 mg/kg, p.o.) were evaluated in the indomethacin-induced gastrointestinal damage model (30 mg/kg, p.o.). Since DHA and OMP exhibited a protective effect in a dose-responsive fashion, the ED30 for each individual compound was determined and a 1:1 combination of DHA and OMP was tested. Isobolographic analysis was used to determine any pharmacodynamic interactions. Since the effective experimental dose ED30 (Zexp) of the combined treatment of DHA and OMP was lower than the theoretical additive dose (Zadd; p < .05) in both the stomach and small intestine their protective effects were considered synergistic. These results indicate that the synergistic protective effects from combined treatment of DHA and OMP could be ideal for mitigating damage generated by NSAIDs at the gastrointestinal level.
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Affiliation(s)
- Martha Ivonne Sánchez-Trigueros
- Laboratorio de Farmacología, Doctorado en Ciencias en Biotecnología, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Fidel Méndez-Cruz
- Laboratorio de Farmacología, Programa de Servicio Social en Investigación, Escuela Nacional de Medicina y Homeopatía (ENMyH) del Instituto Politécnico Nacional (IPN), Ciudad de México, Mexico
| | - Elizabeth Arlen Pineda-Peña
- Carrera Médico Cirujano, Facultad de Estudios Superiores Zaragoza, Campus I, Iztapalapa, Ciudad de México, Mexico
| | - Yadira Rivera-Espinoza
- Doctorado en Ciencias en Biotecnología, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Gilberto Castañeda-Hernández
- Departamento de Farmacología, Centro de Investigación y de Estudios Avanzados (Cinvestav) del Instituto Politécnico Nacional (IPN), Ciudad de México, Mexico
| | - Aracely Evangelina Chávez-Piña
- Laboratorio de Farmacología, Doctorado en Ciencias en Biotecnología, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico.,Maestría en Ciencias en Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico
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Paton KF, Shirazi R, Vyssotski M, Kivell BM. N-docosahexaenoyl ethanolamine (synaptamide) has antinociceptive effects in male mice. Eur J Pain 2020; 24:1990-1998. [PMID: 32852071 DOI: 10.1002/ejp.1641] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 06/29/2020] [Accepted: 07/29/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND N-docosahexaenoyl ethanolamine (DHEA; also known as synaptamide) binds to both the cannabinoid-1 and 2 (CB1 and CB2) cannabinoid receptors and has anti-inflammatory properties in vitro. However, the in vivo effects of DHEA remain unknown. Therefore, this study was designed to understand the effects of DHEA in models of pain and inflammation in mice. METHODS The intraplantar formaldehyde assay, hot water tail withdrawal assay and hotplate model were used to assess the antinociceptive properties of DHEA in mice. The mechanism of action was studied by antagonising the cannabinoid receptors, transient receptor potential vanilloid 1 (TRPV1) ion channel, peroxisome proliferator-activated receptors (PPARs) and G-protein receptor 55 (GPR55). RESULTS N-docosahexaenoyl ethanolamine (2-10 mg/kg) reduced the levels of nociceptive and inflammatory pain-related behaviour over 60 min in the intraplantar formaldehyde assay via both intraperitoneal and local intraplantar administration. The area under the curve analysis showed the overall antinociceptive effects of DHEA (10 mg/kg) were not modulated by pre-treatment with antagonists for the cannabinoid receptors, TRPV1ion channel, PPARα, PPARγ or GPR55. However, the time-course analysis showed that within the early inflammatory phase, antagonism of the CB2 receptor, PPARα and PPARγ led to a partial reversal of the antinociceptive effects of DHEA. In the hot water tail withdrawal and hotplate models of thermal nociception, DHEA (2-10 mg/kg) did not have any antinociceptive effects. CONCLUSIONS N-docosahexaenoyl ethanolamine reduced the level of formaldehyde-induced nociceptive and inflammatory pain-related behaviour; however, was not active in thermal nociceptive models. This study highlights the potential of DHEA for the treatment of acute inflammatory pain. SIGNIFICANCE This study shows that both intraperitoneal and intraplantar administration of DHEA reduces the level of formaldehyde-induced nociceptive and inflammatory pain.
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Affiliation(s)
- Kelly F Paton
- School of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
| | | | | | - Bronwyn M Kivell
- School of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
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Systemic Therapy for Bladder Pain Syndrome/Interstitial Cystitis (BPS/IC): Systematic Review of Published Trials in the Last 5 Years. CURRENT BLADDER DYSFUNCTION REPORTS 2020. [DOI: 10.1007/s11884-020-00592-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Nakamoto K, Taniguchi A, Tokuyama S. Changes in opioid receptors, opioid peptides and morphine antinociception in mice subjected to early life stress. Eur J Pharmacol 2020; 881:173173. [PMID: 32511976 DOI: 10.1016/j.ejphar.2020.173173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 02/09/2023]
Abstract
Recent studies have shown that the endogenous opioid system is considerably affected by early life stress such as child abuse. Here, we investigated whether early life stress changes the endogenous opioid receptors and their peptides, and if such stress impacts morphine antinociception. We used mice affected by maternal separation and social isolation (MSSI) as an early life stress model. In the tail-flick test, 10-week-old MSSI mice showed a significant decrease in morphine antinociception compared to age-matched control mice. The number of c-Fos-positive cells increased in the periaqueductal gray (PAG), nucleus accumbens, and thalamus of control mice after the morphine injections, whereas hardly any positive cells were detected in the same areas of MSSI mice. The expression of μ- and κ-opioid receptor (MOR and KOR, respectively) messenger RNA (mRNA) was significantly decreased in the PAG of MSSI mice, whereas KOR expression was significantly increased in the amygdala of MSSI mice. The expression of δ-opioid receptor (DOR) mRNA was significantly reduced in the PAG and rostral ventromedial medulla of MSSI mice compared to control mice. Moreover, the lack of morphine antinociception was observed in 18-week-old MSSI mice. Our findings suggest that the supraspinal opioid system may be affected by early life stress exposure, and that this exposure may impact morphine antinociception.
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Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe, 650-8586, Japan
| | - Ayaka Taniguchi
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe, 650-8586, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe, 650-8586, Japan.
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Manzhulo IV, Tyrtyshnaia AA, Manzhulo OS, Starinets AA, Kasyanov SP, Dyuizen IV. Neuroprotective Activity of Docosahexaenoic Acid in the Central and Peripheral Nervous System after Chronic Constriction Injury of the Sciatic Nerve. NEUROCHEM J+ 2020. [DOI: 10.1134/s1819712420010158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Brito LF, Oliveira HBM, das Neves Selis N, E Souza CLS, Júnior MNS, de Souza EP, Silva LSCD, de Souza Nascimento F, Amorim AT, Campos GB, de Oliveira MV, Yatsuda R, Timenetsky J, Marques LM. Anti-inflammatory activity of β-caryophyllene combined with docosahexaenoic acid in a model of sepsis induced by Staphylococcus aureus in mice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:5870-5880. [PMID: 31206687 DOI: 10.1002/jsfa.9861] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/05/2019] [Accepted: 06/07/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Sepsis is a set of serious organic manifestations caused by an infection, whose progression culminates in exacerbated inflammation and oxidative stress, poor prognosis, and high hospital costs. Antioxidants used against sepsis have been evaluated, including essential oils such as β-caryophyllene (BCP), and polyunsaturated fatty acids, such as docosahexaenoic acid (DHA). The aim of this study was to evaluate the anti-inflammatory activity of the association of these two compounds. RESULTS Treatment with BCP-DHA, at a dose of 200 μL/animal, significantly inhibited the migration of neutrophils in a Cg-induced peritonitis model. After Staphylococcus aureus infection, in the groups treated with BCP-DHA there was a significant decrease in the total and differential count of leukocytes, increased expression of cytokines TNF-α and IFN-γ in treated groups, an increase of IL-4 and IL-5 in B/D and B/D + SA groups, and an augmentation of IL-6 and IL-12 groups in B/D + SA groups. Histological and bacterial analysis revealed lower neutrophil migration and lower bacterial load in the infected and treated groups. CONCLUSION In general, the BCP-DHA association presented anti-inflammatory activity against two different models of acute inflammation and infection, showing promising potential as a therapeutic adjuvant in sepsis. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Laís Ferraz Brito
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
| | | | - Nathan das Neves Selis
- State University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Bahia, Brazil
| | - Clarissa Leal Silva E Souza
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
| | - Manoel Neres Santos Júnior
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
- State University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Bahia, Brazil
| | - Erika Pereira de Souza
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
| | - Lucas Santana Coelho da Silva
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
- State University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Bahia, Brazil
| | - Flávia de Souza Nascimento
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
| | - Aline Teixeira Amorim
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo, São Paulo, Brazil
| | - Guilherme Barreto Campos
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo, São Paulo, Brazil
| | | | - Regiane Yatsuda
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
| | - Jorge Timenetsky
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo, São Paulo, Brazil
| | - Lucas Miranda Marques
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Vitória da Conquista, Bahia, Brazil
- State University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Bahia, Brazil
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo, São Paulo, Brazil
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Mao XF, Wu HY, Tang XQ, Ali U, Liu H, Wang YX. Activation of GPR40 produces mechanical antiallodynia via the spinal glial interleukin-10/β-endorphin pathway. J Neuroinflammation 2019; 16:84. [PMID: 30981281 PMCID: PMC6461825 DOI: 10.1186/s12974-019-1457-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 03/22/2019] [Indexed: 12/27/2022] Open
Abstract
Background The G protein-coupled receptor 40 (GPR40), broadly expressed in various tissues such as the spinal cord, exerts multiple physiological functions including pain regulation. This study aimed to elucidate the mechanisms underlying GPR40 activation-induced antinociception in neuropathic pain, particularly related to the spinal glial expression of IL-10 and subsequent β-endorphin. Methods Spinal nerve ligation-induced neuropathic pain model was used in this study. β-Endorphin and IL-10 levels were measured in the spinal cord and cultured primary microglia, astrocytes, and neurons. Double immunofluorescence staining of β-endorphin with glial and neuronal cellular biomarkers was also detected in the spinal cord and cultured primary microglia, astrocytes, and neurons. Results GPR40 was expressed on microglia, astrocytes, and neurons in the spinal cords and upregulated by spinal nerve ligation. Intrathecal injection of the GPR40 agonist GW9508 dose-dependently attenuated mechanical allodynia and thermal hyperalgesia in neuropathic rats, with Emax values of 80% and 100% MPE and ED50 values of 6.7 and 5.4 μg, respectively. Its mechanical antiallodynia was blocked by the selective GPR40 antagonist GW1100 but not GPR120 antagonist AH7614. Intrathecal GW9508 significantly enhanced IL-10 and β-endorphin immunostaining in spinal microglia and astrocytes but not in neurons. GW9508 also markedly stimulated gene and protein expression of IL-10 and β-endorphin in cultured primary spinal microglia and astrocytes but not in neurons, originated from 1-day-old neonatal rats. The IL-10 antibody inhibited GW9508-stimulated gene expression of the β-endorphin precursor proopiomelanocortin (POMC) but not IL-10, whereas the β-endorphin antibody did not affect GW9508-stimulated IL-10 or POMC gene expression. GW9508 increased phosphorylation of mitogen-activated protein kinases (MAPKs) including p38, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK), and its stimulatory effects on IL-10 and POMC expression were blocked by each MAPK isoform inhibitor. Spinal GW9508-induced mechanical antiallodynia was completely blocked by intrathecal minocycline, IL-10 neutralizing antibody, β-endorphin antiserum, and μ-opioid receptor-preferred antagonist naloxone. Conclusions Our results illustrate that GPR40 activation produces antinociception via the spinal glial IL-10/β-endorphin antinociceptive pathway. Electronic supplementary material The online version of this article (10.1186/s12974-019-1457-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiao-Fang Mao
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Hai-Yun Wu
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xue-Qi Tang
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Usman Ali
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Hao Liu
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yong-Xiang Wang
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, 800 Dongchuan Road, Shanghai, 200240, China.
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The antihyperalgesic effect of docosahexaenoic acid in streptozotocin-induced neuropathic pain in the rat involves the opioidergic system. Eur J Pharmacol 2018; 845:32-39. [PMID: 30582909 DOI: 10.1016/j.ejphar.2018.12.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 12/06/2018] [Accepted: 12/20/2018] [Indexed: 12/20/2022]
Abstract
Docosahexaenoic acid (DHA) is a polyunsaturated fatty acid that has shown an antinociceptive effect in multiple pain models, such as inflammatory and neuropathic pain by chronic constriction injury in rats; however, its mechanism of action is still not well-understood. Reports suggest that DHA activates opioid signaling, but there is no information on this from a model of neuropathic pain. As a result, the aims of this study were (1) to determine the antihyperalgesic and antiallodynic effect of peripheral DHA administration, and (2) to evaluate the participation of the opioid receptors in the antihyperalgesic effect of DHA on streptozotocin-induced neuropathic pain in the rat. Female Wistar rats were injected with streptozotocin (50 mg/kg, i.p.) to induce hyperglycemia. The formalin, Hargreaves, and von Frey filaments tests were used to assess the nociceptive activity. Intraplantar administration of DHA (100-1000 μg/paw) or gabapentin (562-1778 μg/paw) decreased formalin-evoked hyperalgesia in diabetic rats, in a dose-dependent manner. Furthermore, DHA (562 μg/paw) and gabapentin (1000 μg/paw) reduced thermal hyperalgesia and allodynia. Local peripheral administration of naloxone (non-selective opioid receptor antagonist; 100 μg/paw), naltrindole (selective δ receptor antagonist; 1 μg/paw), and CTOP (D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2, μ receptor antagonist; 20 μg/paw) prevented formalin-evoked hyperalgesia in diabetic rats but not by GNTI (guanidinonaltrindole, κ receptor antagonist;1 µg/paw). It is suggested that peripheral DHA shows an antihyperalgesic effect in neuropathic pain in the rat. Furthermore, δ and μ receptors are involved in the antihyperalgesic peripheral effect of DHA in diabetic rats.
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Miranda-Lara CA, Ortiz MI, Rodríguez-Ramos F, Chávez-Piña AE. Synergistic interaction between docosahexaenoic acid and diclofenac on inflammation, nociception, and gastric security models in rats. Drug Dev Res 2018; 79:239-246. [PMID: 30188586 DOI: 10.1002/ddr.21438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/11/2018] [Indexed: 12/24/2022]
Abstract
Preclinical Research & Development The addition of polyunsaturated fatty acids to nonsteroidal anti-inflammatory drugs can increase their antinociceptive activity and produce a gastroprotective effect. The aim of the present study was to examine the effects of the interaction between docosahexaenoic acid (DHA) and diclofenac on inflammation (fixed ratios 1:1, 1:3, and 3:1), nociception (fixed ratio 1:3), and gastric injury in rats. DHA, diclofenac, or combinations of DHA and diclofenac produced anti-inflammatory and antinociceptive effects in rat. The administration of diclofenac produced significant gastric damage, but this effect was not observed with either DHA or the DHA-diclofenac combinations. Effective dose (ED30 ) values were estimated for each individual drug and analyzed isobolographically. The anti-inflammatory experimental ED30 values were 6.97 mg/kg (1:1 fixed ratio), 1.1 mg/kg (1:3 fixed ratio), and 11.34 mg/kg (3:1 fixed ratio). These values were significantly lower (p < .05) than the theoretical ED30 values: 67.94 mg/kg (1:1), 35.37 mg/kg (1:3), and 100.51 mg/kg (3:1). The antinociceptive experimental value was 1.25 mg/kg (1:3 fixed ratio). This value was lower (p < .05) than the theoretical ED30 , which was predicted to be 15.92 mg/kg. These data indicate that the DHA-diclofenac combinations interact at the systemic level, produce minor gastric damage, and potentially have therapeutic advantages for the clinical treatment of inflammatory pain.
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Affiliation(s)
- Christopher Allan Miranda-Lara
- Maestría en Ciencias en Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Mario I Ortiz
- Área Académica de Medicina del Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo, Mexico
| | - Fernando Rodríguez-Ramos
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco, Cuidad de México, Mexico
| | - Aracely Evangelina Chávez-Piña
- Maestría en Ciencias en Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico.,Laboratorio de Farmacología, Doctorado en Ciencias en Biotecnología, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico
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Nasehi M, Mosavi-Nezhad SM, Khakpai F, Zarrindast MR. The role of omega-3 on modulation of cognitive deficiency induced by REM sleep deprivation in rats. Behav Brain Res 2018; 351:152-160. [DOI: 10.1016/j.bbr.2018.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 01/01/2023]
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Sanders AE, Shaikh SR, Slade GD. Long-chain omega-3 fatty acids and headache in the U.S. population. Prostaglandins Leukot Essent Fatty Acids 2018; 135:47-53. [PMID: 30103932 DOI: 10.1016/j.plefa.2018.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/22/2018] [Accepted: 06/22/2018] [Indexed: 12/19/2022]
Abstract
UNLABELLED The objective of this study was to assess whether dietary intake of long-chain omega-3 polyunsaturated fatty acids (PUFAs) is associated with lower prevalence of headache in the U.S. POPULATION This cross-sectional study used data for a nationally representative sample of 12,317 men and women aged ≥ 20 years participating in the National Health and Nutrition Examination Surveys of 1999-2004. Interviewers recorded self-report of severe headache or migraine in the past three months. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were quantified from 24-hour dietary recall using the U.S. Department of Agriculture National Nutrient Database. Serum concentration of C-reactive protein, a marker of inflammation and potential mediator of PUFA's analgesic properties, was quantified by latex-enhanced nephelometry. Multivariable generalized linear models estimated prevalence ratios (PR) with 95% confidence limits (CL) for severe headache or migraine adjusting for NHANES cycle, sociodemographic characteristics, body mass index and total energy intake. The unadjusted prevalence of severe headache or migraine was 22.0% (females 28.2%, males 15.5%). In multivariable analysis, greater intake of omega-3 PUFAs was associated with lower prevalence of severe headache or migraine: PR 0.94 (95% CL: 0.88, 0.99, p = 0.035) per log unit increase in EPA, and PR 0.94 (95% CL: 0.90, 0.99, p = 0.023) per log unit increase in DHA. The strength of association was greater for non-Mexican Hispanics than for other racial/ethnic groups but was not attenuated after adjustment for C-reactive protein. In conclusion, higher dietary intakes of EPA and DHA were associated with lower prevalence of headache supporting the hypothesis that omega-3 PUFAs may prevent or reduce headache.
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Affiliation(s)
- A E Sanders
- Department of Dental Ecology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.; Center for Pain Research and Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA..
| | - S R Shaikh
- Department of Nutrition, Gillings School of Global Public Health & School of Medicine, University of North Carolina at Chapel Hill, NC, USA
| | - G D Slade
- Department of Dental Ecology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.; Center for Pain Research and Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Nakamoto K, Tokuyama S. [The role of brain n-3 fatty acids-GPR40/FFAR1 signaling in pain]. Nihon Yakurigaku Zasshi 2018; 151:21-26. [PMID: 29321392 DOI: 10.1254/fpj.151.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
G-protein-coupled receptor 40 (GPR40)/free fatty acid receptor (FFAR) 1 is activated by long-chain fatty acids such as docosahexaenoic acid (DHA). Its receptor is expressed predominantly in the central nervous system (CNS) and in β-cells in the pancreatic Islets. We have already demonstrated that the intracerebroventricular administration of DHA or GW9508, a GPR40/FFAR1 agonist, suppresses formalin-induced pain behavior. It also attenuates complete Freund's adjuvant-induced mechanical allodynia and thermal hyperalgesia, suggesting that these effects occur by increasing β-endorphin release from propiomelanocortin neurons. Furthermore, we found that the brain GPR40/FFAR1 signaling may involve in the regulation of the descending pain control system, whereas the deletion of GPR40/FFAR1 might exacerbate mechanical allodynia in postoperative pain. Therefore, it is possible that the brain n-3 fatty acid-GPR40/FFAR1 signaling may play a key role in the modulation of the endogenous pain control system and emotional function. Here, we discuss the role of brain n-3 fatty acids-GPR40/FFAR1 signaling in a pain, and we review the current status and future prospects of the brain GPR40/FFAR1.
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Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
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Pineda-Peña EA, Martínez-Pérez Y, Galicia-Moreno M, Navarrete A, Segovia J, Muriel P, Favari L, Castañeda-Hernández G, Chávez-Piña AE. Participation of the anti-inflammatory and antioxidative activity of docosahexaenoic acid on indomethacin-induced gastric injury model. Eur J Pharmacol 2018; 818:585-592. [DOI: 10.1016/j.ejphar.2017.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/10/2017] [Accepted: 11/13/2017] [Indexed: 02/07/2023]
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Silva RV, Oliveira JT, Santos BLR, Dias FC, Martinez AMB, Lima CKF, Miranda ALP. Long-Chain Omega-3 Fatty Acids Supplementation Accelerates Nerve Regeneration and Prevents Neuropathic Pain Behavior in Mice. Front Pharmacol 2017; 8:723. [PMID: 29089890 PMCID: PMC5651013 DOI: 10.3389/fphar.2017.00723] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/25/2017] [Indexed: 12/15/2022] Open
Abstract
Fish oil (FO) is the main source of long chain omega-3 polyunsaturated fatty acids (ω-3 PUFAs), which display relevant analgesic and anti-inflammatory properties. Peripheral nerve injury is driven by degeneration, neuroinflammation, and neuronal plasticity which results in neuropathic pain (NP) symptoms such as allodynia and hyperalgesia. We tested the preventive effect of an EPA/DHA-concentrate fish oil (CFO) on NP development and regenerative features. Swiss mice received daily oral treatment with CFO 4.6 or 2.3 g/kg for 10 days after NP was induced by partial sciatic nerve ligation. Mechanical allodynia and thermal hypernociception were assessed 5 days after injury. CFO 2.3 g/kg significantly prevented mechanical and thermal sensitization, reduced TNF levels in the spinal cord, sciatic MPO activity, and ATF-3 expression on DRG cells. CFO improved Sciatic Functional Index (SFI) as well as electrophysiological recordings, corroborating the increased GAP43 expression and total number of myelinated fibers observed in sciatic nerve. No locomotor activity impairment was observed in CFO treated groups. These results point to the regenerative and possibly protective properties of a combined EPA and DHA oral administration after peripheral nerve injury, as well as its anti-neuroinflammatory activity, evidencing ω-3 PUFAs promising therapeutic outcomes for NP treatment.
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Affiliation(s)
- Rafaela V Silva
- Laboratório de Estudos em Farmacologia Experimental, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julia T Oliveira
- Laboratório de Neurodegeneração e Reparo, Departamento de Patologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bruna L R Santos
- Laboratório de Estudos em Farmacologia Experimental, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabiana C Dias
- Laboratório de Estudos em Farmacologia Experimental, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana M B Martinez
- Laboratório de Neurodegeneração e Reparo, Departamento de Patologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cleverton K F Lima
- Laboratório de Estudos em Farmacologia Experimental, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana L P Miranda
- Laboratório de Estudos em Farmacologia Experimental, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Arroyo-Lira AG, Rodríguez-Ramos F, Ortiz MI, Castañeda-Hernández G, Chávez-Piña AE. Supra-Additive Interaction of Docosahexaenoic Acid and Naproxen and Gastric Safety on the Formalin Test in Rats. Drug Dev Res 2017; 78:332-339. [DOI: 10.1002/ddr.21396] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/27/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Arlette Guadalupe Arroyo-Lira
- Doctorado en Biotecnología; Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional; Ciudad de México México
| | - Fernando Rodríguez-Ramos
- Departamento de Ciencias Naturales, DCNI; Universidad Autónoma Metropolitana, Unidad Cuajimalpa; Ciudad de México México
| | - Mario I. Ortiz
- Área Académica de Medicina del Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo; Pachuca Hidalgo México
| | - Gilberto Castañeda-Hernández
- Departamento de Farmacología; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; Ciudad de México México
| | - Aracely Evangelina Chávez-Piña
- Doctorado en Biotecnología; Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional; Ciudad de México México
- Laboratorio de Farmacología, Programa Institucional en Biomedicina Molecular; Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional; Ciudad de México México
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Nakamoto K, Aizawa F, Miyagi K, Yamashita T, Mankura M, Koyama Y, Kasuya F, Hirasawa A, Kurihara T, Miyata A, Tokuyama S. Dysfunctional GPR40/FFAR1 signaling exacerbates pain behavior in mice. PLoS One 2017; 12:e0180610. [PMID: 28723961 PMCID: PMC5516985 DOI: 10.1371/journal.pone.0180610] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 06/19/2017] [Indexed: 11/22/2022] Open
Abstract
We previously showed that activation of G protein-coupled receptor 40/free fatty acid receptor 1 (GPR40/FFAR1) signaling modulates descending inhibition of pain. In this study, we investigated the involvement of fatty acid-GPR40/FFAR1 signaling in the transition from acute to chronic pain. We used GPR40/FFAR1-knockout (GPR40KO) mice and wild-type (WT) mice. A plantar incision was performed, and mechanical allodynia and thermal hyperalgesia were evaluated with a von Frey filament test and plantar test, respectively. Immunohistochemistry was used to localize GPR40/FFAR1, and the levels of free fatty acids in the hypothalamus were analyzed with liquid chromatography-tandem mass spectrometry. The repeated administration of GW1100, a GPR40/FFAR1 antagonist, exacerbated the incision-induced mechanical allodynia and significantly increased the levels of phosphorylated extracellular signal-regulated kinase in the spinal cord after low-threshold touch stimulation in the mice compared to vehicle-treated mice. The levels of long-chain free fatty acids, such as docosahexaenoic acid, oleic acid, and palmitate, which are GPR40/FFAR1 agonists, were significantly increased in the hypothalamus two days after the surgery compared to levels in the sham group. Furthermore, the incision-induced mechanical allodynia was exacerbated in the GPR40KO mice compared to the WT mice, while the response in the plantar test was not changed. These findings suggested that dysfunction of the GPR40/FFAR1 signaling pathway altered the endogenous pain control system and that this dysfunction might be associated with the development of chronic pain.
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Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
| | - Fuka Aizawa
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
| | - Kei Miyagi
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
| | - Takuya Yamashita
- Biochemical Toxicology Laboratory, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
| | - Mitsumasa Mankura
- Faculty of Food Culture, Kurashiki Sakuyo University, Kurashiki, Okayama, Japan
| | - Yutaka Koyama
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
| | - Fumiyo Kasuya
- Biochemical Toxicology Laboratory, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
| | - Akira Hirasawa
- Department of Genomic Drug Discovery Science, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Takashi Kurihara
- Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Atsuro Miyata
- Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Chuo-ku, Kobe, Japan
- * E-mail:
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Nakamoto K. A New Pain Regulatory System via the Brain Long Chain Fatty Acid Receptor GPR40/FFA1 Signal. YAKUGAKU ZASSHI 2017; 137:199-204. [PMID: 28154332 DOI: 10.1248/yakushi.16-00208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An increasingly large number of pharmacological and physiological works on fatty acids have shown that the functional properties of fatty acids are regulated by the amount of individual fatty acid intake and the distribution of fatty acids among organs. Recently, it has been determined that G-protein-coupled receptor 40/free fatty acid receptor 1 (GPR40/FFA1) is activated by long-chain fatty acids, such as docosahexaenoic acid (DHA). GPR40/FFA1 is mainly expressed in the β cell of the pancreas, spinal cord and brain. It is reported that this receptor has a functional role in controlling blood glucose levels via the modulation of insulin secretion. However, its physiological function in the brain remains unknown. Our previous studies have shown that GPR40/FFA1 is expressed in pro-opiomelanocortin (POMC)-positive neurons of the arcuate nucleus, serotonergic neurons in the nucleus raphe magnus, and in noradrenergic neurons in the locus coeruleus. Furthermore, the intracerebroventricular injection of DHA or GW9508, which is a selective GPR40/FFA1 agonist, attenuates formalin-induced inflammatory pain behavior through increasing β-endorphin release in the hypothalamus. It also suppresses complete Freund's adjuvant-induced mechanical allodynia and thermal hyperalgesia. Our findings suggest that brain free long-chain fatty acids-GPR40/FFA1 signaling might have an important role in the modulation of endogenous pain control systems. In this review, I discuss the current status and our recent study regarding a new pain regulatory system via the brain long chain fatty acid receptor GPR40/FFA1 signal.
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Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
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Zhang Z, Ma Z. Saturated fatty acids recognition by the CD14-TLR4-MD2 complex may engage in the presurgical anxiety-induced persistent postsurgical pain. Med Hypotheses 2017; 103:105-107. [PMID: 28571793 DOI: 10.1016/j.mehy.2017.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 01/07/2017] [Accepted: 03/11/2017] [Indexed: 12/13/2022]
Abstract
It has been proved that presurgical anxiety can induce the development and progression of persistent postsurgical pain through elevating circulating corticosterone levels and activating the glucocorticoids receptor. Under stressful circumstances, the concentration of blood saturated fatty acids (SFAs) increases rapidly to provide enough ATP for individuals' survival owing to stress hormones such as glucocorticoid, catecholamine and glucagon. It is reported that SFAs can trigger an inflammatory response through CD14-TLR4-MD2 complex. The role of TLR4 and its downstream signaling pathway has been confirmed in the pathogenesis of cancer pain and inflammatory pain. Furthermore, a newly clinical research uncovers that the children with recurrent abdominal pain, which is triggered by early psychosomatic stress, have higher levels of SFAs than healthy individuals. We therefore put forward the hypothesis that the elevated level of SFAs induced by stress hormones may be engaged in the presurgical anxiety-induced persistent postsurgical pain. If established, it's of important clinical significance, which will make great contributions to the prevention and treatment of the presurgical anxiety-induced persistent postsurgical pain.
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Affiliation(s)
- Zuoxia Zhang
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Jiangsu, China
| | - Zhengliang Ma
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Jiangsu, China.
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Murina F, Graziottin A, Felice R, Gambini D. Alpha Lipoic Acid Plus Omega-3 Fatty Acids for Vestibulodynia Associated With Painful Bladder Syndrome. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2017; 39:131-137. [DOI: 10.1016/j.jogc.2016.12.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 12/04/2016] [Accepted: 12/23/2016] [Indexed: 11/16/2022]
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Kunder SK, Bairy LK, Arivazhahan A. Effect of Sodium Valproate and Docosahexaenoic Acid on Pain in Rats. J Clin Diagn Res 2017; 11:FF05-FF08. [PMID: 28511406 DOI: 10.7860/jcdr/2017/25036.9596] [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: 10/25/2016] [Accepted: 01/26/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Analgesics are commonly prescribed medications used to alleviate pain of various aetiologies without affecting the patient's consciousness. They interfere with the transmission of pain signals. A commonly used antiepileptic drug, sodium valproate has been used in various non-epileptic conditions like migraine prophylaxis and in the treatment of bipolar disorder because of the multiple mechanisms by which it acts. Docosahexanoic Acid (DHA), an omega 3 fatty acid, is known to possess analgesic activity. We planned a study to assess the effect of sodium valproate alone and in combination with DHA in rat models of pain. AIM To evaluate the analgesic activity of sodium valproate and DHA supplementation using various experimental models in albino Wistar rats. MATERIALS AND METHODS For analgesic activity, A total of 48 adult Wistar albino rats were divided into eight groups of six rats each. Group I was control (distil water 1 ml/kg), Group II received intraperitoneal injection of tramadol (10 mg/kg), Group III, IV, V were injected intraperitoneal sodium valproate 100, 200, 400 mg/kg with distil water respectively and Group VI, VII, VIII were given sodium valproate 100, 200, 400 mg/kg plus DHA 300 mg/kg (intraperitoneal) respectively. Analgesic activity was assessed using hot plate, tail flick and acetic acid writhing models. RESULTS We found that sodium valproate at higher doses (400 mg/kg) used either alone along with DHA (300 mg/kg) showed statistically significant analgesic activity in comparison to control in various experimental models for assessing pain. CONCLUSION Combination of sodium valproate along with DHA has shown promising analgesic activity.
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Affiliation(s)
- Sushil Kiran Kunder
- Postgraduate Student, Department of Pharmacology, Kasturba Medical College, Manipal, Karnataka, India
| | | | - Avinash Arivazhahan
- Postgraduate Student, Department of Pharmacology, Kasturba Medical College, Manipal, Karnataka, India
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Landa-Juárez AY, Ortiz MI, Castañeda-Hernández G, Chávez-Piña AE. Participation of potassium channels in the antinociceptive effect of docosahexaenoic acid in the rat formalin test. Eur J Pharmacol 2016; 793:95-100. [DOI: 10.1016/j.ejphar.2016.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/25/2023]
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Shalini SM, Herr DR, Ong WY. The Analgesic and Anxiolytic Effect of Souvenaid, a Novel Nutraceutical, Is Mediated by Alox15 Activity in the Prefrontal Cortex. Mol Neurobiol 2016; 54:6032-6045. [PMID: 27696115 DOI: 10.1007/s12035-016-0138-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/16/2016] [Indexed: 11/25/2022]
Abstract
Pain and anxiety have a complex relationship and pain is known to share neurobiological pathways and neurotransmitters with anxiety. Top-down modulatory pathways of pain have been shown to originate from cortical and subcortical regions, including the dorsolateral prefrontal cortex. In this study, a novel docosahexaenoic acid (DHA)-containing nutraceutical, Souvenaid, was administered to mice with infraorbital nerve ligation-induced neuropathic pain and behavioral responses recorded. Infraorbital nerve ligation resulted in increased face wash strokes of the face upon von Frey hair stimulation, indicating increased nociception. Part of this response involves general pain sensitization that is dependent on the CNS, since increased nociception was also found in the paws during the hot plate test. Mice receiving oral gavage of Souvenaid, a nutraceutical containing DHA; choline; and other cell membrane components, showed significantly reduced pain sensitization. The mechanism of Souvenaid's activity involves supraspinal antinociception, originating in the prefrontal cortex, since inhibition of the DHA-metabolizing enzyme 15-lipoxygenase (Alox15) in the prefrontal cortex attenuated the antinociceptive effect of Souvenaid. Alox15 inhibition also modulated anxiety behavior associated with pain after infraorbital nerve ligation. The effects of Souvenaid components and Alox15 on reducing central sensitization of pain may be due to strengthening of a known supraspinal antinociceptive pathway from the prefrontal cortex to the periaqueductal gray. Together, results indicate the importance of the prefrontal cortex and DHA/Alox15 in central antinociceptive pathways and suggest that Souvenaid may be a novel therapeutic for neuropathic pain.
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Affiliation(s)
- Suku-Maran Shalini
- Department of Anatomy, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, Singapore, 119260, Singapore
- Neurobiology and Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Deron R Herr
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, Singapore, Singapore
| | - Wei-Yi Ong
- Department of Anatomy, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, Singapore, 119260, Singapore.
- Neurobiology and Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore.
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Wagner K, Lee KSS, Yang J, Hammock BD. Epoxy fatty acids mediate analgesia in murine diabetic neuropathy. Eur J Pain 2016; 21:456-465. [PMID: 27634339 DOI: 10.1002/ejp.939] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Neuropathic pain is a debilitating condition with no adequate therapy. The health benefits of omega-3 fatty acids are established, however, the role of docosahexaenoic acid (DHA) in limiting pain has only recently been described and the mechanisms of this action remain unknown. DHA is metabolized into epoxydocosapentanoic acids (EDPs) via cytochrome P450 (CYP450) enzymes which are substrates for the soluble epoxide hydrolase (sEH) enzyme. Here, we tested several hypotheses; first, that the antinociceptive action of DHA is mediated by the EDPs. Second, based on evidence that DHA and CYP450 metabolites elicit analgesia through opioid signalling, we investigated this as a possible mechanism of action. Third, we tested whether the analgesia mediated by epoxy fatty acids had similar rewarding effects as opioid analgesics. METHODS We tested diabetic neuropathic wild-type and sEH null mice in a conditioned place preference assay for their response to EDPs, sEHI and antagonism of these treatments with naloxone, a mu-opioid receptor antagonist. RESULTS The EDPs and sEH inhibitors were efficacious against chronic pain, and naloxone antagonized the action of both EDPs and sEH inhibitors. Despite this antagonism, the sEH inhibitors lacked reward side effects differing from opioids. CONCLUSIONS The EpFA are analgesic against chronic pain differing from opioids which have limited efficacy in chronic conditions. SIGNIFICANCE EDPs and sEHI mediate analgesia in modelled chronic pain and this analgesia is blocked by naloxone. However, unlike opioids, sEHI are highly effective in neuropathic pain models and importantly lack rewarding side effects.
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Affiliation(s)
- K Wagner
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, USA
| | - K S S Lee
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, USA
| | - J Yang
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, USA
| | - B D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, USA
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Manzhulo IV, Ogurtsova OS, Kipryushina YO, Latyshev NA, Kasyanov SP, Dyuizen IV, Tyrtyshnaia AA. Neuron-astrocyte interactions in spinal cord dorsal horn in neuropathic pain development and docosahexaenoic acid therapy. J Neuroimmunol 2016; 298:90-7. [PMID: 27609281 DOI: 10.1016/j.jneuroim.2016.07.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 06/15/2016] [Accepted: 07/15/2016] [Indexed: 01/19/2023]
Abstract
The analgesic activity of docosahexaenoic acid (DHA, 22:6 n-3) was studied using a chronic constriction injury (CCI) rat model. Animals were subcutaneously injected with DHA emulsion at a dose of 4.5mg/kg (125mМ/kg) daily during 2weeks after surgery. We characterized the dynamics of GFAP-positive astrocyte, substance P (SP) and nNOS-positive neurons activity in the spinal cord dorsal horn (SCDH) superficial lamina. We found that DHA treatment decrease the intensity and duration of neurogenic pain syndrome, results in earlier stabilization of weight distribution, prevents the cold allodynia and dystrophic changings in denervated limb tissue. DHA treatment reduced the reactive astrocyte number, decrease SP-immunopositive fibers and nNOS-positive neurons number in the SCDH in neuropathic pain.
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Affiliation(s)
- Igor V Manzhulo
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia; School of Biomedicine, Far Eastern Federal University, Vladivostok, 8 Sukhanova Str., 690950, Russia.
| | - Olga S Ogurtsova
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia
| | - Yuliya O Kipryushina
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia
| | - Nikolay A Latyshev
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia
| | - Sergey P Kasyanov
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia
| | - Inessa V Dyuizen
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia
| | - Anna A Tyrtyshnaia
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 17 Palchevskii Str., 690041, Russia; School of Biomedicine, Far Eastern Federal University, Vladivostok, 8 Sukhanova Str., 690950, Russia
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Nakamoto K, Tokuyama S. [The possibility of a novel pain control system through brain long chain fatty acid receptor GPR40/FFAR1]. Nihon Yakurigaku Zasshi 2016; 146:302-8. [PMID: 26657120 DOI: 10.1254/fpj.146.302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Cutuli D, Pagani M, Caporali P, Galbusera A, Laricchiuta D, Foti F, Neri C, Spalletta G, Caltagirone C, Petrosini L, Gozzi A. Effects of Omega-3 Fatty Acid Supplementation on Cognitive Functions and Neural Substrates: A Voxel-Based Morphometry Study in Aged Mice. Front Aging Neurosci 2016; 8:38. [PMID: 26973513 PMCID: PMC4777728 DOI: 10.3389/fnagi.2016.00038] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 02/15/2016] [Indexed: 11/13/2022] Open
Abstract
Human and experimental studies have revealed putative neuroprotective and pro-cognitive effects of omega-3 polyunsaturated fatty acids (n-3 PUFA) in aging, evidencing positive correlations between peripheral n-3 PUFA levels and regional grey matter (GM) volume, as well as negative correlations between dietary n-3 PUFA levels and cognitive deficits. We recently showed that n-3 PUFA supplemented aged mice exhibit better hippocampal-dependent mnesic functions, along with enhanced cellular plasticity and reduced neurodegeneration, thus supporting a role of n-3 PUFA supplementation in preventing cognitive decline during aging. To corroborate these initial results and develop new evidence on the effects of n-3 PUFA supplementation on brain substrates at macro-scale level, here we expanded behavioral analyses to the emotional domain (anxiety and coping skills), and carried out a fine-grained regional GM volumetric mapping by using high-resolution MRI-based voxel-based morphometry. The behavioral effects of 8 week n-3 PUFA supplementation were measured on cognitive (discriminative, spatial and social) and emotional (anxiety and coping) abilities of aged (19 month-old at the onset of study) C57B6/J mice. n-3 PUFA supplemented mice showed better mnesic performances as well as increased active coping skills. Importantly, these effects were associated with enlarged regional hippocampal, retrosplenial and prefrontal GM volumes, and with increased post mortem n-3 PUFA brain levels. These findings indicate that increased dietary n-3 PUFA intake in normal aging can improve fronto-hippocampal GM structure and function, an effect present also when the supplementation starts at late age. Our data are consistent with a protective role of n-3 PUFA supplementation in counteracting cognitive decline, emotional dysfunctions and brain atrophy.
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Affiliation(s)
- Debora Cutuli
- Santa Lucia FoundationRome, Italy; University of Rome "Sapienza"Rome, Italy
| | - Marco Pagani
- Functional Neuroimaging Laboratory, Istituto Italiano di TecnologiaRovereto, Italy; Center for Mind and Brain Sciences, University of TrentoRovereto, Italy
| | - Paola Caporali
- Santa Lucia FoundationRome, Italy; University of Rome "Sapienza"Rome, Italy
| | - Alberto Galbusera
- Functional Neuroimaging Laboratory, Istituto Italiano di Tecnologia Rovereto, Italy
| | | | - Francesca Foti
- Santa Lucia FoundationRome, Italy; University of Rome "Sapienza"Rome, Italy
| | | | | | - Carlo Caltagirone
- Santa Lucia FoundationRome, Italy; University of Rome "Tor Vergata"Rome, Italy
| | - Laura Petrosini
- Santa Lucia FoundationRome, Italy; University of Rome "Sapienza"Rome, Italy
| | - Alessandro Gozzi
- Functional Neuroimaging Laboratory, Istituto Italiano di Tecnologia Rovereto, Italy
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Omega-3 fatty acids are able to modulate the painful symptoms associated to cyclophosphamide-induced-hemorrhagic cystitis in mice. J Nutr Biochem 2016; 27:219-32. [DOI: 10.1016/j.jnutbio.2015.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 09/03/2015] [Accepted: 09/04/2015] [Indexed: 12/30/2022]
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Huang CT, Tsai YJ. Docosahexaenoic acid confers analgesic effects after median nerve injury via inhibition of c-Jun N-terminal kinase activation in microglia. J Nutr Biochem 2015; 29:97-106. [PMID: 26895670 DOI: 10.1016/j.jnutbio.2015.11.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 11/03/2015] [Accepted: 11/20/2015] [Indexed: 12/22/2022]
Abstract
The c-Jun N-terminal kinase (JNK) in the central nervous system plays a critical role in the processing of neuropathic pain. Docosahexaenoic acid (DHA), a predominant omega-3 polyunsaturated fatty acid in the central nervous system, has a neuroprotective efficacy. In this study, we examined the relationships between JNK activation in the cuneate nucleus (CN) and behavioral hypersensitivity after chronic constriction injury (CCI) of the median nerve. We further investigated the effects of DHA administration on JNK activation and development of hypersensitivity. Using immunohistochemistry and immunoblotting, low levels of phosphorylated JNK (p-JNK) were detected in the CN of sham-operated rats. As early as 1 day after CCI, p-JNK levels in the ipsilateral CN were significantly increased and peaked at 7 days. Double-immunofluorescence labeling with cell-specific markers showed that p-JNK immunoreactive cells coexpressed OX-42, a microglia activation marker, suggesting the expression of p-JNK in the microglia. Microinjection of SP600125, a JNK inhibitor, into the CN 1 day after CCI attenuated injury-induced behavioral hypersensitivity in a dose-dependent manner. Furthermore, animals received intravenous injection of DHA at doses of 100, 250 or 500 nmol/kg 30 min after median nerve CCI. DHA treatment decreased p-JNK and OX-42 levels, diminished the release of proinflammatory cytokines and improved behavioral hypersensitivity following CCI. In conclusion, median nerve injury-induced microglial JNK activation in the CN modulated development of behavioral hypersensitivity. DHA has analgesic effects on neuropathic pain, at least in part, by means of suppressing a microglia-mediated inflammatory response through the inhibition of JNK signaling pathway.
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Affiliation(s)
- Chun-Ta Huang
- Department of Internal Medicine and Traumatology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Ju Tsai
- Graduate Institute of Basic Medicine and School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
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Manzhulo IV, Ogurtsova OS, Lamash NE, Latyshev NA, Kasyanov SP, Dyuizen IV. Analgetic effect of docosahexaenoic acid is mediated by modulating the microglia activity in the dorsal root ganglia in a rat model of neuropathic pain. Acta Histochem 2015; 117:659-66. [PMID: 26182833 DOI: 10.1016/j.acthis.2015.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 12/13/2022]
Abstract
The analgetic activity of docosahexaenoic acid (DHA, 22:6 n-3) was studied using a chronic constriction injury (CCI) model in rats, and the dynamics of iba-1 (+) microglia/macrophages in the dorsal root ganglia (DRG) were characterized. DHA reduced the intensity and duration of neurogenic pain. The application of DHA led to an earlier stabilization of weight bearing in the incapacitance test and prevented the development of cold allodynia and degenerative changes in tissues of the denervated limb. DHA treatment significantly reduced satellite glia reaction and expression of the pro-apoptotic p53 protein in the DRG. Thus, DHA's anti-pain effect may be a result of the modulation of microglia/macrophages activity and the development of neuroprotective effects at the level of the dorsal root ganglia.
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Heng LJ, Qi R, Yang RH, Xu GZ. Docosahexaenoic acid inhibits mechanical allodynia and thermal hyperalgesia in diabetic rats by decreasing the excitability of DRG neurons. Exp Neurol 2015; 271:291-300. [PMID: 26118950 DOI: 10.1016/j.expneurol.2015.06.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/07/2015] [Accepted: 06/24/2015] [Indexed: 11/16/2022]
Abstract
Diabetes mellitus is a common metabolic disease in human beings with characteristic symptoms of hyperglycemia, chronic inflammation and insulin resistance. One of the most common complications of early-onset diabetes mellitus is peripheral diabetic neuropathy, which is manifested either by loss of nociception or by allodynia and hyperalgesia. Dietary fatty acids, especially polyunsaturated fatty acids, have been shown the potential of anti-inflammation and modulating neuron excitability. The present study investigated the effects of docosahexaenoic acid (DHA) on the excitability of dorsal root ganglion (DRG) neurons in streptozotocin (STZ)-induced diabetes rats. The effects of DHA on the allodynia and hyperalgesia of diabetic rats were also evaluated. Dietary DHA supplementation effectively attenuated both allodynia and hyperalgesia induced by STZ injection. DHA supplementation decreased the excitability of DRG neurons by decreasing the sodium currents and increasing potassium currents, which may contribute to the effect of alleviating allodynia and hyperalgesia in diabetic rats. The results suggested that DHA might be useful as an adjuvant therapy for the prevention and treatment of painful diabetic neuropathy.
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Affiliation(s)
- Li-Jun Heng
- Department of Neurosurgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, Hubei 430070, China; Department of Neurosurgery, Tangdu Hospital of Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Rui Qi
- Department of Nutrition and Food Hygiene, School of Public Health, The Fourth Military Medical University, Xi'an 710032, China
| | - Rui-Hua Yang
- Department of Nutrition and Food Hygiene, School of Public Health, The Fourth Military Medical University, Xi'an 710032, China.
| | - Guo-Zheng Xu
- Department of Neurosurgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, Hubei 430070, China.
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Silva JC, Araújo CDS, de Lima-Saraiva SRG, de Oliveira-Junior RG, Diniz TC, Wanderley CWDS, Palheta-Júnior RC, Mendes RL, Guimarães AG, Quintans-Júnior LJ, Almeida JRGDS. Antinociceptive and anti-inflammatory activities of the ethanolic extract of Annona vepretorum Mart. (Annonaceae) in rodents. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:197. [PMID: 26104689 PMCID: PMC4478715 DOI: 10.1186/s12906-015-0716-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 06/09/2015] [Indexed: 11/05/2022]
Abstract
Background Annona vepretorum Mart. (Annonaceae) is a native tree from Caatinga (Brazilian Northeastern savanna biome), popularly known as “araticum” and “pinha da Caatinga”. In this study, we investigated the effects of the crude ethanolic extract (Av-EtOH) in models of pain and inflammation in rodents. Methods The evaluation of antinociceptive activity was carried out by the acetic acid-induced writhing, formalin, hot plate and tail flick tests, while paw edema induced by carrageenan or histamine, and leukocyte migration to the peritoneal cavity were used for anti-inflammatory profile. Histological analyses also were carried out. Results Av-EtOH (25, 50 and 100 mg/kg, p.o) significantly reduced the number of writhing (P < 0.01) and decreased (P < 0.01) the paw licking time in both phases of the formalin test. In the hot plate and tail flick tests, this extract increased the reaction time, consequently reduced painful behavior. The effects in the formalin and hot plate tests were antagonized by naloxone. Av-EtOH inhibited significantly (P < 0.01) the increase in the edema volume after administration of carrageenan and histamine. In the peritonitis test, acute pre-treatment with Av-EtOH inhibited leukocyte migration. Histological analysis showed less inflammation in the groups treated with the extract when the inflammation was induced by carrageenan or histamine. Conclusion Thus, Av-EtOH has significant antinociceptive and anti-inflammatory properties, which are related probably with the activation of opioid receptors and inhibition of release of mediators of the inflammatory process. This specie is a potential target for drug discovery.
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Moghaddami M, James M, Proudman S, Cleland LG. Synovial fluid and plasma n3 long chain polyunsaturated fatty acids in patients with inflammatory arthritis. Prostaglandins Leukot Essent Fatty Acids 2015; 97:7-12. [PMID: 25817850 DOI: 10.1016/j.plefa.2015.02.005] [Citation(s) in RCA: 9] [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: 11/11/2014] [Revised: 02/25/2015] [Accepted: 02/26/2015] [Indexed: 11/21/2022]
Abstract
Relationships between n-3 long chain polyunsaturated fatty acids (LC-PUFA) in plasma and synovial fluid (SF) were examined in 36 patients with knee effusion within the context of a variety of rheumatic diagnoses and various stated fish oil (FO) intakes (from 0 to 30mL of standard FO daily) of variable duration. In a sub-group of patients, correlations between PUFA in SF mononuclear cells (MNC) and cell-free supernatants of SF and between SF MNC and peripheral blood (PB) MNC were examined. Correlations were also sought between clinical data (stated FO intake, pain score) and n-3 LC-PUFA. Correlations between plasma n-3 LC-PUFA and SF n-3 LC-PUFA were very strong (r(2)>0.9, p<0.001). The LC-PUFA profiles of SF supernatants differed from those of MNC. PUFA profiles in PB MNC and SF MNC were similar, except for a higher proportion of DHA in the latter. Positive correlations were observed between stated intakes of FO and EPA in plasma and SF (for both r=0.37, p=0.02) and DHA in plasma (r=0.37, p=0.02) and SF (r=0.36, p=0.03). n-3 LC-PUFA in plasma and SF correlated inversely with pain score (plasma r(2)=0.16, p<0.02; SF r(2) 0.32, p=0.001). In conclusion, plasma n-3 LC-PUFA is a strong indicator of SF n-3 LC-PUFA status across a broad range of rheumatic diagnoses and FO intakes. Higher n-3 LC-PUFA in plasma and SF were associated with lesser pain experience.
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Affiliation(s)
- Mahin Moghaddami
- Arthritis Research Laboratory, Hanson Institute, SA Pathology, Adelaide, South Australia 5000, Australia; Discipline of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia; Rheumatology Unit, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia.
| | - Michael James
- Arthritis Research Laboratory, Hanson Institute, SA Pathology, Adelaide, South Australia 5000, Australia; Discipline of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia; Rheumatology Unit, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia.
| | - Susanna Proudman
- Arthritis Research Laboratory, Hanson Institute, SA Pathology, Adelaide, South Australia 5000, Australia; Discipline of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia; Rheumatology Unit, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia.
| | - Leslie G Cleland
- Arthritis Research Laboratory, Hanson Institute, SA Pathology, Adelaide, South Australia 5000, Australia; Discipline of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia; Rheumatology Unit, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia.
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Escudero GE, Romañuk CB, Toledo ME, Olivera ME, Manzo RH, Laino CH. Analgesia enhancement and prevention of tolerance to morphine: beneficial effects of combined therapy with omega-3 fatty acids. J Pharm Pharmacol 2015; 67:1251-62. [DOI: 10.1111/jphp.12416] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 02/27/2015] [Indexed: 01/25/2023]
Abstract
Abstract
Objectives
Recent evidence associates omega-3 fatty acids (O3) with pain reduction. The aim of this work was to evaluate the antinociceptive effect of O3, either alone or in combination with morphine after acute and chronic administration in rats. As well, a new pharmaceutical mixture that allows the concomitant administration of O3 and morphine as an oral solution was developed.
Methods
Animals were fed on a control or an experimental diet supplemented with O3. They were subjected to the hot-plate test to assess analgesic effect and tolerance to the analgesic effect of morphine. The open-field test was carried out to determine if the differences in the response latency can be related to non-specific sedative effects.
Key findings
O3 dietary supplementation increased the response latency compared with the control group. Acute treatment with morphine in these groups resulted in an additive antinociceptive effect not related to locomotor activity. Chronic coadministration of morphine with O3 attenuated the development of tolerance. Oral administration of the new pharmaceutical mixture showed analgesic activity with a subtherapeutic dose of morphine.
Conclusion
This finding suggests a role for O3 as adjuncts to opioids in pain therapy and might contribute to the reduction of the occurrence of morphine side-effects.
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Affiliation(s)
- Graciela E Escudero
- Instituto de Biotecnología, Centro de Investigación e Innovación Tecnológica – CENIIT, Universidad Nacional de La Rioja, La Rioja, Argentina
| | - Carolina B Romañuk
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET and Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - María E Toledo
- Instituto de Biotecnología, Centro de Investigación e Innovación Tecnológica – CENIIT, Universidad Nacional de La Rioja, La Rioja, Argentina
| | - María E Olivera
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET and Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - Ruben H Manzo
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA), CONICET and Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - Carlos H Laino
- Instituto de Biotecnología, Centro de Investigación e Innovación Tecnológica – CENIIT, Universidad Nacional de La Rioja, La Rioja, Argentina
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Khan MZ, He L. The role of polyunsaturated fatty acids and GPR40 receptor in brain. Neuropharmacology 2015; 113:639-651. [PMID: 26005184 DOI: 10.1016/j.neuropharm.2015.05.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/02/2015] [Accepted: 05/08/2015] [Indexed: 01/15/2023]
Abstract
Polyunsaturated fatty acids (PUFAs) are found in abundance in the nervous system. They perform significant functions for example boosting synaptogenesis, neurogenesis, inducing antinociception, stimulating gene expression and neuronal activity, preventing apoptosis and neuroinflammation. G-protein-coupled receptor 40 (GPR40), also called free fatty acid receptor 1 (FFA1), is ubiquitously expressed in various regions of the human brain including the olfactory bulb, midbrain, medulla oblongata, hippocampus, hypothalamus, cerebral cortex, cerebellum and in the spinal cord. GPR40, when binding with polyunsaturated fatty acids (PUFAs) has shown promising therapeutic potential. This review presents current knowledge regarding the pharmacological properties of GPR40 and addresses its functions in brain, with a focus on neurodevelopment & neurogenesis. Furthermore, the demonstration of GPR40 involvement in several neuropathological conditions such as apoptosis, inflammatory pain, Alzheimer's disease and Parkinson's disease. Although the results are encouraging, further research is needed to clarify their role in the treatment of inflammatory pain, Alzheimer's disease and Parkinson's disease. This article is part of the Special Issue entitled 'Lipid Sensing G Protein-Coupled Receptors in the CNS'.
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Affiliation(s)
- Muhammad Zahid Khan
- Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Ling He
- Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China.
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Wagner K, Vito S, Inceoglu B, Hammock BD. The role of long chain fatty acids and their epoxide metabolites in nociceptive signaling. Prostaglandins Other Lipid Mediat 2014; 113-115:2-12. [PMID: 25240260 PMCID: PMC4254344 DOI: 10.1016/j.prostaglandins.2014.09.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/27/2014] [Accepted: 09/03/2014] [Indexed: 12/15/2022]
Abstract
Lipid derived mediators contribute to inflammation and the sensing of pain. The contributions of omega-6 derived prostanoids in enhancing inflammation and pain sensation are well known. Less well explored are the opposing anti-inflammatory and analgesic effects of the omega-6 derived epoxyeicosatrienoic acids. Far less has been described about the epoxidized metabolites derived from omega-3 long chain fatty acids. The epoxide metabolites are turned over rapidly with enzymatic hydrolysis by the soluble epoxide hydrolase being the major elimination pathway. Despite this, the overall understanding of the role of lipid mediators in the pathology of chronic pain is growing. Here, we review the role of long chain fatty acids and their metabolites in alleviating both acute and chronic pain conditions. We focus specifically on the epoxidized metabolites of omega-6 and omega-3 long chain fatty acids as well as a novel strategy to modulate their activity in vivo.
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Affiliation(s)
- Karen Wagner
- Department of Entomology and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, United States
| | - Steve Vito
- Department of Entomology and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, United States
| | - Bora Inceoglu
- Department of Entomology and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, United States
| | - Bruce D Hammock
- Department of Entomology and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, United States.
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Harada S, Haruna Y, Aizawa F, Matsuura W, Nakamoto K, Yamashita T, Kasuya F, Tokuyama S. Involvement of GPR40, a long-chain free fatty acid receptor, in the production of central post-stroke pain after global cerebral ischemia. Eur J Pharmacol 2014; 744:115-23. [PMID: 25281202 DOI: 10.1016/j.ejphar.2014.09.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 01/23/2023]
Abstract
Central post-stroke pain (CPSP), one of the complications of cerebral ischemia and neuropathic pain syndrome, is associated with specific somatosensory abnormalities. Although CPSP is a serious problem, detailed underlying mechanisms and standard treatments for CPSP are not well established. In this study, we assessed the role of GPR40, a long-chain fatty acid receptor, showing anti-nociceptive effects, in CPSP. We also examined the role of astrocytes in CPSP due to their effects in mediating the release of polyunsaturated fatty acids, which act as potential GPR40 ligands. The aim of this study was to determine the interactions between CPSP and astrocyte/GPR40 signaling. Male ddY mice were subjected to 30 min of bilateral carotid artery occlusion (BCAO). The development of hind paw mechanical hyperalgesia was measured after BCAO using the von Frey test. Neuronal damage was estimated by histological analysis on day 3 after BCAO. The thresholds for hind paw mechanical hyperalgesia were significantly decreased on days 1-28 after BCAO when compared with those of pre-BCAO assessments. BCAO-induced mechanical hyperalgesia was significantly decreased by intracerebroventricular injection of docosahexaenoic acid or GW9508, a GPR40 agonist; furthermore, these effects were reversed by GW1100, a GPR40 antagonist. The expression levels of glial fibrillary acidic protein, an astrocytic marker, and some free fatty acids were significantly decreased 5h after BCAO, although no effects of BCAO were noted on hypothalamic GPR40 protein expression. Our data show that BCAO-induced mechanical hyperalgesia is possible to be regulated by astrocyte activation and stimulation of GPR40 signaling.
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Affiliation(s)
- Shinichi Harada
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Yuka Haruna
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Fuka Aizawa
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Wataru Matsuura
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Takuya Yamashita
- Biochemical Toxicology Laboratory, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Fumiyo Kasuya
- Biochemical Toxicology Laboratory, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan.
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Cutuli D, De Bartolo P, Caporali P, Laricchiuta D, Foti F, Ronci M, Rossi C, Neri C, Spalletta G, Caltagirone C, Farioli-Vecchioli S, Petrosini L. n-3 polyunsaturated fatty acids supplementation enhances hippocampal functionality in aged mice. Front Aging Neurosci 2014; 6:220. [PMID: 25202271 PMCID: PMC4142709 DOI: 10.3389/fnagi.2014.00220] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/05/2014] [Indexed: 11/13/2022] Open
Abstract
As major components of neuronal membranes, omega-3 polyunsaturated acids (n-3 PUFA) exhibit a wide range of regulatory functions, modulating from synaptic plasticity to neuroinflammation, from oxidative stress to neuroprotection. Recent human and animal studies indicated the n-3 PUFA neuroprotective properties in aging, with a clear negative correlation between n-3 PUFA levels and hippocampal deficits. The present multidimensional study was aimed at associating cognition, hippocampal neurogenesis, volume, neurodegeneration and metabolic correlates to verify n-3 PUFA neuroprotective effects in aging. To this aim 19 month-old mice were given n-3 PUFA mixture, or olive oil or no dietary supplement for 8 weeks during which hippocampal-dependent mnesic functions were tested. At the end of behavioral testing morphological and metabolic correlates were analyzed. n-3 PUFA supplemented aged mice exhibited better object recognition memory, spatial and localizatory memory, and aversive response retention, without modifications in anxiety levels in comparison to controls. These improved hippocampal cognitive functions occurred in the context of an enhanced cellular plasticity and a reduced neurodegeneration. In fact, n-3 PUFA supplementation increased hippocampal neurogenesis and dendritic arborization of newborn neurons, volume, neuronal density and microglial cell number, while it decreased apoptosis, astrocytosis and lipofuscin accumulation in the hippocampus. The increased levels of some metabolic correlates (blood Acetyl-L-Carnitine and brain n-3 PUFA concentrations) found in n-3 PUFA supplemented mice also pointed toward an effective neuroprotection. On the basis of the present results n-3 PUFA supplementation appears to be a useful tool in health promotion and cognitive decline prevention during aging.
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Affiliation(s)
- Debora Cutuli
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
| | - Paola De Bartolo
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
| | - Paola Caporali
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
| | - Daniela Laricchiuta
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
| | - Francesca Foti
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
| | - Maurizio Ronci
- Department of Experimental and Clinical Sciences, University "G. D'Annunzio" Chieti, Pescara, Italy ; Division of Information Technology, Engineering and the Environment, Mawson Institute, University of South Australia Mawson Lakes, SA, Australia
| | - Claudia Rossi
- Department of Experimental and Clinical Sciences, University "G. D'Annunzio" Chieti, Pescara, Italy
| | - Cristina Neri
- Lab of Proteomic and metabonomic, Santa Lucia Foundation Rome, Italy ; Department of Experimental Medicine and Surgery, University Tor Vergata of Rome Rome, Italy
| | | | - Carlo Caltagirone
- Lab of Clinical and Behavioral Neurology, Santa Lucia Foundation Rome, Italy ; Department of Neuroscience, University Tor Vergata of Rome Rome, Italy
| | - Stefano Farioli-Vecchioli
- Institute of Cell Biology and Neurobiology, National Research Council, Santa Lucia Foundation Rome, Italy
| | - Laura Petrosini
- Department of Psychology, University Sapienza of Rome Rome, Italy ; Lab of Experimental and Behavioral Neurophysiology, Santa Lucia Foundation Rome, Italy
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Tanaka K, Farooqui AA, Siddiqi NJ, Alhomida AS, Ong WY. Effects of docosahexaenoic Acid on neurotransmission. Biomol Ther (Seoul) 2014; 20:152-7. [PMID: 24116288 PMCID: PMC3792211 DOI: 10.4062/biomolther.2012.20.2.152] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 12/01/2011] [Accepted: 12/05/2011] [Indexed: 12/20/2022] Open
Abstract
Docosahexaenoic acid (DHA) is the major polyunsaturated fatty acid (PUFA) in the brain and a structural component of neuronal membranes. Changes in DHA content of neuronal membranes lead to functional changes in the activity of receptors and other proteins which might be associated with synaptic function. Accumulating evidence suggests the beneficial effects of dietary DHA supplementation on neurotransmission. This article reviews the beneficial effects of DHA on the brain; uptake, incorporation and release of DHA at synapses, effects of DHA on synapses, effects of DHA on neurotransmitters, DHA metabolites, and changes in DHA with age. Further studies to better understand the metabolome of DHA could result in more effective use of this molecule for treatment of neurodegenerative or neuropsychiatric diseases.
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Affiliation(s)
- Kazuhiro Tanaka
- Department of Pharmacology, National University of Singapore, Singapore 119260
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50
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Dyuizen IV, Manzhulo IV, Ogurtsova OS, Lamash NE, Latyshev NA, Kas’yanov SV. Specific Features of Analgesic Effect of Docosahexaenoic Acid in Rats with Neuropathic Pain Syndrome. Bull Exp Biol Med 2014; 156:699-701. [DOI: 10.1007/s10517-014-2428-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Indexed: 11/24/2022]
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