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Singh MT, Thaggikuppe Krishnamurthy P, Magham SV. Harnessing the synergistic potential of NK1R antagonists and selective COX-2 inhibitors for simultaneous targeting of TNBC cells and cancer stem cells. J Drug Target 2024; 32:258-269. [PMID: 38252517 DOI: 10.1080/1061186x.2024.2309568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
Triple-negative breast cancer (TNBC) lacks the expression of oestrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2), rendering it unresponsive to endocrine therapy and HER2 targeted treatments. Though certain chemotherapeutics targeting the cell cycle have shown efficacy to a certain extent, the presence of chemotherapy-resistant cancer stem cells (CSCs) presents a significant challenge in tackling TNBC. Multiple lines of evidence suggest the upregulation of neuropeptide Substance P (SP), its NK-1 receptor (NK1R) and the Cyclooxygenase-2 (COX-2) enzyme in TNBC patients. Upregulation of the SP/NK1R system and COX-2 influences major signalling pathways involved in cell proliferation, growth, survival, angiogenesis, inflammation, metastasis and stem cell activity. The simultaneous activation and crosstalk between the pathways activated by SP/NK1R and COX-2 consequently increase the levels of key regulators of self-renewal pathways in CSCs, promoting stemness. The combination therapy with NK1R antagonists and COX-2 inhibitors can simultaneously target TNBC cells and CSCs, thereby enhancing treatment efficacy and reducing the risk of recurrence and relapse. This review discusses the rationale for combining NK1R antagonists and COX-2 inhibitors for the better management of TNBC and a novel strategy to deliver drug cargo precisely to the tumour site to address the challenges associated with off-target binding.
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Affiliation(s)
- Madhu Tanya Singh
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
| | - Praveen Thaggikuppe Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
| | - Sai Varshini Magham
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
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Yang Y, Cao X, Wang Y, Wu X, Zhou P, Miao L, Deng X. Neurokinin-1 receptor antagonist aprepitant regulates autophagy and apoptosis via ROS/JNK in intrahepatic cholangiocarcinoma. Liver Int 2024; 44:1651-1667. [PMID: 38554043 DOI: 10.1111/liv.15904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/03/2024] [Accepted: 03/07/2024] [Indexed: 04/01/2024]
Abstract
BACKGROUND Intrahepatic cholangiocarcinoma (iCCA) has a poor prognosis and limited treatment options. Aprepitant, a selective NK-1R antagonist, can inhibit the growth of various tumours in vitro and in vivo. However, it remains unclear whether aprepitant has cytotoxic effects on iCCA. METHODS We measured the expression of SP/NK-1R in clinical samples of iCCA by immunohistochemistry. Then, we detected the cytotoxic effects of aprepitant on iCCA cells via MTT, EdU and colony formation assay. We constructed a subcutaneous xenograft model of BALB/c nude mice by using HCCC-9810 and RBE cell lines to explore the effects of aprepitant in vivo. To elucidate the potential mechanisms, we explored the pro-apoptotic effect of aprepitant by flow cytometric, western blotting, ROS detection and JC-1 staining. Furthermore, we detected the autophagic level of HCCC-9810 and RBE by western blotting, mRFP-eGFP-LC3 adenovirus transfection and electron microscope. RESULTS SP/NK-1R is significantly expressed in iCCA. Aprepitant inhibited human iCCA xenograft growth and dose-dependently decreased the viability of RBE and HCCC-9810 cells. Aprepitant-induced mitochondria-dependent apoptosis through ROS/JNK pathway. Additionally, pretreatment with z-VAD-fmk partly reversed the effect of aprepitant on cell viability, while NAC completely attenuated the cytotoxic effects of aprepitant in vitro. Furthermore, we observed the dynamic changes of autophagosome in RBE and HCCC-9810 cells treated with aprepitant. CONCLUSION SP/NK-1R signalling is significantly activated in iCCA and promotes the proliferation of iCCA cells. By contrast, aprepitant can induce autophagy and apoptosis in iCCA cells via ROS accumulation and subsequent activation of JNK.
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Affiliation(s)
- Yang Yang
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xueyan Cao
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuting Wang
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xinyu Wu
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ping Zhou
- Lab Center, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lin Miao
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xueting Deng
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Wu L, Zhang D, Wu Y, Liu J, Jiang J, Zhou C. Sodium Leak Channel in Glutamatergic Neurons of the Lateral Parabrachial Nucleus Helps to Maintain Respiratory Frequency Under Sevoflurane Anesthesia. Neurosci Bull 2024:10.1007/s12264-024-01223-0. [PMID: 38767833 DOI: 10.1007/s12264-024-01223-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 01/15/2024] [Indexed: 05/22/2024] Open
Abstract
The lateral parabrachial nucleus (PBL) is implicated in the regulation of respiratory activity. Sodium leak channel (NALCN) mutations disrupt the respiratory rhythm and influence anesthetic sensitivity in both rodents and humans. Here, we investigated whether the NALCN in PBL glutamatergic neurons maintains respiratory function under general anesthesia. Our results showed that chemogenetic activation of PBL glutamatergic neurons increased the respiratory frequency (RF) in mice; whereas chemogenetic inhibition suppressed RF. NALCN knockdown in PBL glutamatergic neurons but not GABAergic neurons significantly reduced RF under physiological conditions and caused more respiratory suppression under sevoflurane anesthesia. NALCN knockdown in PBL glutamatergic neurons did not further exacerbate the respiratory suppression induced by propofol or morphine. Under sevoflurane anesthesia, painful stimuli rapidly increased the RF, which was not affected by NALCN knockdown in PBL glutamatergic neurons. This study suggested that the NALCN is a key ion channel in PBL glutamatergic neurons that maintains respiratory frequency under volatile anesthetic sevoflurane but not intravenous anesthetic propofol.
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Affiliation(s)
- Lin Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Donghang Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China.
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Yujie Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jingyao Jiang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Cheng Zhou
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Guzzi G, Della Torre A, Bruni A, Lavano A, Bosco V, Garofalo E, La Torre D, Longhini F. Anatomo-physiological basis and applied techniques of electrical neuromodulation in chronic pain. JOURNAL OF ANESTHESIA, ANALGESIA AND CRITICAL CARE 2024; 4:29. [PMID: 38698460 PMCID: PMC11064427 DOI: 10.1186/s44158-024-00167-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/24/2024] [Indexed: 05/05/2024]
Abstract
Chronic pain, a complex and debilitating condition, poses a significant challenge to both patients and healthcare providers worldwide. Conventional pharmacological interventions often prove inadequate in delivering satisfactory relief while carrying the risks of addiction and adverse reactions. In recent years, electric neuromodulation emerged as a promising alternative in chronic pain management. This method entails the precise administration of electrical stimulation to specific nerves or regions within the central nervous system to regulate pain signals. Through mechanisms that include the alteration of neural activity and the release of endogenous pain-relieving substances, electric neuromodulation can effectively alleviate pain and improve patients' quality of life. Several modalities of electric neuromodulation, with a different grade of invasiveness, provide tailored strategies to tackle various forms and origins of chronic pain. Through an exploration of the anatomical and physiological pathways of chronic pain, encompassing neurotransmitter involvement, this narrative review offers insights into electrical therapies' mechanisms of action, clinical utility, and future perspectives in chronic pain management.
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Affiliation(s)
- Giusy Guzzi
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Attilio Della Torre
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Andrea Bruni
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Angelo Lavano
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Vincenzo Bosco
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Eugenio Garofalo
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Domenico La Torre
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Federico Longhini
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy.
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Lan J, Deng Z, Wang Q, Li D, Fan K, Chang J, Ma Y. Neuropeptide substance P attenuates colitis by suppressing inflammation and ferroptosis via the cGAS-STING signaling pathway. Int J Biol Sci 2024; 20:2507-2531. [PMID: 38725846 PMCID: PMC11077368 DOI: 10.7150/ijbs.94548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/13/2024] [Indexed: 05/12/2024] Open
Abstract
Neuropeptide substance P (SP) belongs to a family of bioactive peptides and regulates many human diseases. This study aims to investigate the role and underlying mechanisms of SP in colitis. Here, activated SP-positive neurons and increased SP expression were observed in dextran sodium sulfate (DSS)-induced colitis lesions in mice. Administration of exogenous SP efficiently ameliorated the clinical symptoms, impaired intestinal barrier function, and inflammatory response. Mechanistically, SP protected mitochondria from damage caused by DSS or TNF-α exposure, preventing mitochondrial DNA (mtDNA) leakage into the cytoplasm, thereby inhibiting the cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway. SP can also directly prevent STING phosphorylation through the neurokinin-1 receptor (NK1R), thereby inhibiting the activation of the TBK1-IRF3 signaling pathway. Further studies revealed that SP alleviated the DSS or TNF-α-induced ferroptosis process, which was associated with repressing the cGAS-STING signaling pathway. Notably, we identified that the NK1R inhibition reversed the effects of SP on inflammation and ferroptosis via the cGAS-STING pathway. Collectively, we unveil that SP attenuates inflammation and ferroptosis via suppressing the mtDNA-cGAS-STING or directly acting on the STING pathway, contributing to improving colitis in an NK1R-dependent manner. These findings provide a novel mechanism of SP regulating ulcerative colitis (UC) disease.
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Affiliation(s)
| | | | | | | | | | | | - Yunfei Ma
- State Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Tasma Z, Rees TA, Guo S, Tan S, O'Carroll SJ, Faull RLM, Curtis MA, Christensen SL, Hay DL, Walker CS. Pharmacology of PACAP and VIP receptors in the spinal cord highlights the importance of the PAC 1 receptor. Br J Pharmacol 2024. [PMID: 38616050 DOI: 10.1111/bph.16376] [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: 12/06/2022] [Revised: 12/18/2023] [Accepted: 01/20/2024] [Indexed: 04/16/2024] Open
Abstract
BACKGROUND AND PURPOSE The spinal cord is a key structure involved in the transmission and modulation of pain. Pituitary adenylate cyclase-activating peptide (PACAP) and vasoactive intestinal peptide (VIP), are expressed in the spinal cord. These peptides activate G protein-coupled receptors (PAC1, VPAC1 and VPAC2) that could provide targets for the development of novel pain treatments. However, it is not clear which of these receptors are expressed within the spinal cord and how these receptors signal. EXPERIMENTAL APPROACH Dissociated rat spinal cord cultures were used to examine agonist and antagonist receptor pharmacology. Signalling profiles were determined for five signalling pathways. The expression of different PACAP and VIP receptors was then investigated in mouse, rat and human spinal cords using immunoblotting and immunofluorescence. KEY RESULTS PACAP, but not VIP, potently stimulated cAMP, IP1 accumulation and ERK and cAMP response element-binding protein (CREB) but not Akt phosphorylation in spinal cord cultures. Signalling was antagonised by M65 and PACAP6-38. PACAP-27 was more effectively antagonised than either PACAP-38 or VIP. The patterns of PAC1 and VPAC2 receptor-like immunoreactivity appeared to be distinct in the spinal cord. CONCLUSIONS AND IMPLICATIONS The pharmacological profile in the spinal cord suggested that a PAC1 receptor is the major functional receptor subtype present and thus likely mediates the nociceptive effects of the PACAP family of peptides in the spinal cord. However, the potential expression of both PAC1 and VPAC2 receptors in the spinal cord highlights that these receptors may play differential roles and are both possible therapeutic targets.
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Affiliation(s)
- Zoe Tasma
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Tayla A Rees
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
| | - Song Guo
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Odontology, Panum Institute, Faculty of Health, University of Copenhagen, Copenhagen, Denmark
| | - Sheryl Tan
- Department of Anatomy and Medical Imaging and Centre for Brain Research, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
| | - Simon J O'Carroll
- Department of Anatomy and Medical Imaging and Centre for Brain Research, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
| | - Richard L M Faull
- Department of Anatomy and Medical Imaging and Centre for Brain Research, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
| | - Maurice A Curtis
- Department of Anatomy and Medical Imaging and Centre for Brain Research, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
| | - Sarah L Christensen
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Debbie L Hay
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- Department of Pharmacology and Toxicology, The University of Otago, Dunedin, New Zealand
| | - Christopher S Walker
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
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Nakhleh-Francis Y, Awad-Igbaria Y, Sakas R, Bang S, Abu-Ata S, Palzur E, Lowenstein L, Bornstein J. Exploring Localized Provoked Vulvodynia: Insights from Animal Model Research. Int J Mol Sci 2024; 25:4261. [PMID: 38673846 PMCID: PMC11050705 DOI: 10.3390/ijms25084261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Provoked vulvodynia represents a challenging chronic pain condition, characterized by its multifactorial origins. The inherent complexities of human-based studies have necessitated the use of animal models to enrich our understanding of vulvodynia's pathophysiology. This review aims to provide an exhaustive examination of the various animal models employed in this research domain. A comprehensive search was conducted on PubMed, utilizing keywords such as "vulvodynia", "chronic vulvar pain", "vulvodynia induction", and "animal models of vulvodynia" to identify pertinent studies. The search yielded three primary animal models for vulvodynia: inflammation-induced, allergy-induced, and hormone-induced. Additionally, six agents capable of triggering the condition through diverse pathways were identified, including factors contributing to hyperinnervation, mast cell proliferation, involvement of other immune cells, inflammatory cytokines, and neurotransmitters. This review systematically outlines the various animal models developed to study the pathogenesis of provoked vulvodynia. Understanding these models is crucial for the exploration of preventative measures, the development of novel treatments, and the overall advancement of research within the field.
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Affiliation(s)
- Yara Nakhleh-Francis
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya 2210001, Israel; (S.B.); (L.L.); (J.B.)
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Yaseen Awad-Igbaria
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Reem Sakas
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Sarina Bang
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya 2210001, Israel; (S.B.); (L.L.); (J.B.)
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Saher Abu-Ata
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Eilam Palzur
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Lior Lowenstein
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya 2210001, Israel; (S.B.); (L.L.); (J.B.)
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
| | - Jacob Bornstein
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya 2210001, Israel; (S.B.); (L.L.); (J.B.)
- Research Institute of Galilee Medical Center, Nahariya 2210001, Israel; (Y.A.-I.); (R.S.); (S.A.-A.); (E.P.)
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed 1311502, Israel
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Bom ADOP, Dias-Soares M, Corrêa RCD, Neves CL, Hosch NG, de Lucena GG, Oliveira CG, Pagano RL, Chacur M, Giorgi R. Molecular Aspects Involved in the Mechanisms of Bothrops jararaca Venom-Induced Hyperalgesia: Participation of NK1 Receptor and Glial Cells. Toxins (Basel) 2024; 16:187. [PMID: 38668612 PMCID: PMC11053884 DOI: 10.3390/toxins16040187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/29/2024] Open
Abstract
Accidents caused by Bothrops jararaca (Bj) snakes result in several local and systemic manifestations, with pain being a fundamental characteristic. The inflammatory process responsible for hyperalgesia induced by Bj venom (Bjv) has been studied; however, the specific roles played by the peripheral and central nervous systems in this phenomenon remain unclear. To clarify this, we induced hyperalgesia in rats using Bjv and collected tissues from dorsal root ganglia (DRGs) and spinal cord (SC) at 2 and 4 h post-induction. Samples were labeled for Iba-1 (macrophage and microglia), GFAP (satellite cells and astrocytes), EGR1 (neurons), and NK1 receptors. Additionally, we investigated the impact of minocycline, an inhibitor of microglia, and GR82334 antagonist on Bjv-induced hyperalgesia. Our findings reveal an increase in Iba1 in DRG at 2 h and EGR1 at 4 h. In the SC, markers for microglia, astrocytes, neurons, and NK1 receptors exhibited increased expression after 2 h, with EGR1 continuing to rise at 4 h. Minocycline and GR82334 inhibited venom-induced hyperalgesia, highlighting the crucial roles of microglia and NK1 receptors in this phenomenon. Our results suggest that the hyperalgesic effects of Bjv involve the participation of microglial and astrocytic cells, in addition to the activation of NK1 receptors.
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Affiliation(s)
- Ariela de Oliveira Pedro Bom
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
- Postgraduate Program in Toxinology, Butantan Institute, São Paulo 05503-900, SP, Brazil
| | - Monique Dias-Soares
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
| | - Raíssa Cristina Darroz Corrêa
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
- Postgraduate Program in Toxinology, Butantan Institute, São Paulo 05503-900, SP, Brazil
| | - Camila Lima Neves
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
| | | | - Gabriela Gomes de Lucena
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
| | - Camilla Garcia Oliveira
- Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo 05508-900, SP, Brazil; (C.G.O.); (M.C.)
| | - Rosana Lima Pagano
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo 01308-060, SP, Brazil;
| | - Marucia Chacur
- Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo 05508-900, SP, Brazil; (C.G.O.); (M.C.)
| | - Renata Giorgi
- Laboratory of Pathophysiology, Butantan Institute, São Paulo 05503-900, SP, Brazil; (A.d.O.P.B.); (M.D.-S.); (R.C.D.C.); (C.L.N.); (G.G.d.L.)
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9
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Bertolini M, Gherardini J, Chéret J, Alam M, Sulk M, Botchkareva NV, Biro T, Funk W, Grieshaber F, Paus R. Mechanical epilation exerts complex biological effects on human hair follicles and perifollicular skin: An ex vivo study approach. Int J Cosmet Sci 2024; 46:175-198. [PMID: 37923568 DOI: 10.1111/ics.12923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE Electrical epilation of unwanted hair is a widely used hair removal method, but it is largely unknown how this affects the biology of human hair follicles (HF) and perifollicular skin. Here, we have begun to explore how mechanical epilation changes selected key biological read-out parameters ex vivo within and around the pilosebaceous unit. METHODS Human full-thickness scalp skin samples were epilated ex vivo using an electro-mechanical device, organ-cultured for up to 6 days in serum-free, supplemented medium, and assessed at different time points by quantitative (immuno-)histomorphometry for selected relevant read-out parameters in epilated and sham-epilated control samples. RESULTS Epilation removed most of the hair shafts, often together with fragments of the outer and inner root sheath and hair matrix. This was associated with persistent focal thinning of the HF basal membrane, decreased melanin content of the residual HF epithelium, and increased HF keratinocyte apoptosis, including in the bulge, yet without affecting the number of cytokeratin 15+ HF epithelial stem cells. Sebocyte apoptosis in the peripheral zone was increased, albeit without visibly altering sebum production. Epilation transiently perturbed HF immune privilege, and increased the expression of ICAM-1 in the bulge and bulb mesenchyme, and the number of perifollicular MHC class II+ cells as well as mast cells around the distal epithelium and promoted mast cell degranulation around the suprabulbar and bulbar area. Moreover, compared to controls, several key players of neurogenic skin inflammation, itch, and/or thermosensation (TRPV1, TRPA1, NGF, and NKR1) were differentially expressed in post-epilation skin. CONCLUSION These data generated in denervated, organ-cultured human scalp skin demonstrate that epilation-induced mechanical HF trauma elicits surprisingly complex biological responses. These may contribute to the delayed re-growth of thinner and lighter hair shafts post-epilation and temporary post-epilation discomfort. Our findings also provide pointers regarding the development of topically applicable agents that minimize undesirable sequelae of epilation.
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Affiliation(s)
- Marta Bertolini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Jennifer Gherardini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Jérémy Chéret
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Majid Alam
- Department of Dermatology and Venereology, Qatar Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Mathias Sulk
- Department of Dermatology, University of Münster, Münster, Germany
| | - Natalia V Botchkareva
- Department of Dermatology, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Tamas Biro
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Wolfgang Funk
- Clinic for Plastic, Aesthetic and Reconstructive Surgery, Dr. Dr. med. Funk, Munich, Germany
| | | | - Ralf Paus
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
- CUTANEON - Skin & Hair Innovations, Hamburg, Germany
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10
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Liu C, Lin MTY, Lee IXY, Wong JHF, Lu D, Lam TC, Zhou L, Mehta JS, Ong HS, Ang M, Tong L, Liu YC. Neuropathic Corneal Pain: Tear Proteomic and Neuromediator Profiles, Imaging Features, and Clinical Manifestations. Am J Ophthalmol 2024; 265:6-20. [PMID: 38521157 DOI: 10.1016/j.ajo.2024.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/05/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024]
Abstract
PURPOSE To investigate the tear proteomic and neuromediator profiles, in vivo confocal microscopy (IVCM) imaging features, and clinical manifestations in neuropathic corneal pain (NCP) patients. DESIGN Cross-sectional study. METHODS A total of 20 NCP patients and 20 age-matched controls were recruited. All subjects were evaluated by corneal sensitivity, Schirmer test, tear break-up time, and corneal and ocular surface staining, Ocular Surface Disease Index and Ocular Pain Assessment Survey questionnaires were administered, as well as IVCM examinations for corneal nerves, microneruomas, and epithelial and dendritic cells. Tears were collected for neuromediator and proteomic analysis using enzyme-linked immunosorbent assay and data-independent acquisition mass spectrometry. RESULTS Burning and sensitivity to light were the 2 most common symptoms in NCP. A total of 188 significantly dysregulated proteins, such as elevated metallothionein-2, creatine kinases B-type, vesicle-associated membrane protein 2, neurofilament light polypeptide, and myelin basic protein, were identified in the NCP patients. The top 10 dysregulated biological pathways in NCP include neurotoxicity, axonal signaling, wound healing, neutrophil degradation, apoptosis, thrombin signaling mitochondrial dysfunction, and RHOGDI and P70S6K signaling pathways. Compared to controls, the NCP cohort presented with significantly decreased corneal sensitivity (P < .001), decreased corneal nerve fiber length (P = .003), corneal nerve fiber density (P = .006), and nerve fiber fractal dimension (P = .033), as well as increased corneal nerve fiber width (P = .002), increased length, total area and perimeter of microneuromas (P < .001, P < .001, P = .019), smaller corneal epithelial size (P = .017), and higher nerve growth factor level in tears (P = .006). CONCLUSIONS These clinical manifestations, imaging features, and molecular characterizations would contribute to the diagnostics and potential therapeutic targets for NCP.
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Affiliation(s)
- Chang Liu
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Cornea and Refractive Surgery Group (C.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore
| | - Molly Tzu-Yu Lin
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore
| | - Isabelle Xin Yu Lee
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore
| | - Jipson Hon Fai Wong
- Clinical Research Platform (J.H.F.W.), Singapore Eye Research Institute, Singapore
| | - Daqian Lu
- Centre for Myopia Research (D.L., T.C.L.), School of Optometry, Hong Kong Polytechnic University, Hong Kong
| | - Thomas Chuen Lam
- Centre for Myopia Research (D.L., T.C.L.), School of Optometry, Hong Kong Polytechnic University, Hong Kong; Centre for Eye and Vision Research (CEVR) (T.C.L.), Hong Kong
| | - Lei Zhou
- School of Optometry (L.Z.), Department of Applied Biology and Chemical Technology, Research Centre for SHARP Vision (RCSV); The Hong Kong Polytechnic University, Hong Kong
| | - Jodhbir S Mehta
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Cornea and Refractive Surgery Group (C.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Department of Cornea and External Eye Disease (J.S.M., H.S.O., M.A., L.T., Y.-C.L.), Singapore National Eye Centre, Singapore; Ophthalmology and Visual Sciences Academic Clinical Program (J.S.M., H.S.O., M.A., Y.-C.L.), Duke-NUS Medical School, Singapore
| | - Hon Shing Ong
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Cornea and Refractive Surgery Group (C.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Department of Cornea and External Eye Disease (J.S.M., H.S.O., M.A., L.T., Y.-C.L.), Singapore National Eye Centre, Singapore; Ophthalmology and Visual Sciences Academic Clinical Program (J.S.M., H.S.O., M.A., Y.-C.L.), Duke-NUS Medical School, Singapore
| | - Marcus Ang
- Department of Cornea and External Eye Disease (J.S.M., H.S.O., M.A., L.T., Y.-C.L.), Singapore National Eye Centre, Singapore; Ophthalmology and Visual Sciences Academic Clinical Program (J.S.M., H.S.O., M.A., Y.-C.L.), Duke-NUS Medical School, Singapore
| | - Louis Tong
- Department of Cornea and External Eye Disease (J.S.M., H.S.O., M.A., L.T., Y.-C.L.), Singapore National Eye Centre, Singapore; Ocular Surface Research Group (L.T.), Singapore Eye Research Institute, Singapore; Eye Academic Clinical Program (L.T.), Duke-NUS Medical School, Singapore; Department of Ophthalmology (L.T.), Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yu-Chi Liu
- From Tissue Engineering and Cell Therapy Group (C.L., M.T.-Y.L., I.X.Y.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Cornea and Refractive Surgery Group (C.L., J.S.M., H.S.O., Y.-C.L.), Singapore Eye Research Institute, Singapore; Department of Cornea and External Eye Disease (J.S.M., H.S.O., M.A., L.T., Y.-C.L.), Singapore National Eye Centre, Singapore; Ophthalmology and Visual Sciences Academic Clinical Program (J.S.M., H.S.O., M.A., Y.-C.L.), Duke-NUS Medical School, Singapore; Department of Ophthalmology (Y.-C.L.), National Taiwan University, Taiwan.
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11
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Niella RV, Corrêa JMX, dos Santos JFR, Lima LF, Marques CSDC, Santos LC, Santana LR, Silva ÁJC, Farias KS, Pirovani CP, Silva JF, de Lavor MSL. Post-treatment with maropitant reduces oxidative stress, endoplasmic reticulum stress and neuroinflammation on peripheral nerve injury in rats. PLoS One 2024; 19:e0287390. [PMID: 38507417 PMCID: PMC10954158 DOI: 10.1371/journal.pone.0287390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 06/05/2023] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVE To determine the effective dose and therapeutic potential of maropitant using through expression of mediators of oxidative stress, inflammatory and of the unfolded protein response (UPR) (bio) markers on spinal cord using a model of neuropathic pain induced through chronic constriction injury (CCI) in rats. STUDY DESIGN Randomized, blinded, prospective experimental study. ANIMALS 98 male Wistar rats. METHODS Rats were anesthetized with sevoflurane and after CCI, they were randomly assigned to the following groups that received: vehicle, 3, 6, 15, 30 e 50 mg/kg/24q of maropitant. The effect on inflammatory mediators (IL10, TNFα), oxidative stress (GPx, CAT, SOD), microglial (IBA-1) and neuronal (NeuN, TACR1) markers was evaluated though immunohistochemistry and expression levels of markers of hypoxia (HIF1α, Nrf2), antioxidant enzymes (Catalse, Sod1 and GPx1), and endoplasmic reticulum stress mediators (GRP78, CHOP and PERK) through qRT-PCR. RESULTS Intraperitoneal injection (IP) of maropitant inhibited nociception with ID50 values of 4,1 mg/kg (5,85-19,36) in a neuropathic pain model through CCI. A dose of 30 mg/kg/24q was significantly effective in reducing mechanical allodynia 1 to 4h after treatment with nociception inhibition (145,83%). A reduction in the expression of hypoxia factors (HIF1α, Nrf2) was observed, along with an increase in antioxidant activity (CAT, SOD and GPX). Additionally, there was a reduction in inflammatory markes (IL10, TNFα), microglial (IBA-1), and neuronal markers (NeuN, TACR1). CONCLUSION AND CLINICAL RELEVANCE These findings demonstrate that the determined dose, administered daily for seven days, had an antinociceptive effect, as well as anti-inflammatory and antioxidant activity.
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Affiliation(s)
- Raquel Vieira Niella
- Department of Agricultural and Environmental Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | | | | | - Larissa Ferreira Lima
- Department of Agricultural and Environmental Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | | | | | - Larissa Rodrigues Santana
- Department of Agricultural and Environmental Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | - Álvaro José Chávez Silva
- Department of Agricultural and Environmental Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | - Keilane Silva Farias
- Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | | | - Juneo Freitas Silva
- Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Brazil
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12
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Zhao L, Zhou Y, Duan H, Zhang Y, Ma B, Yang T, Chen J, Chen Y, Qi H. Analysis of Clinical Characteristics and Neuropeptides in Patients with Dry Eye with and without Chronic Ocular Pain after FS-LASIK. Ophthalmol Ther 2024; 13:711-723. [PMID: 38190027 PMCID: PMC10853104 DOI: 10.1007/s40123-023-00861-3] [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: 09/22/2023] [Accepted: 11/17/2023] [Indexed: 01/09/2024] Open
Abstract
INTRODUCTION Chronic ocular pain, particularly prevalent in patients with dry eye disease and post-femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) surgery, presents with unclear clinical characteristics and an undefined pathogenesis. In this study, we aimed to compare clinical characteristics and tear neuropeptide concentrations in patients with dry eye disease (DED) with and without chronic ocular pain following FS-LASIK, and investigate correlations between ocular pain, clinical characteristics, and tear neuropeptide levels. METHODS Thirty-eight post-FS-LASIK patients with DED were assigned to two groups: those with chronic ocular pain and those without chronic ocular pain. Dry eye, ocular pain, and mental health-related parameters were evaluated using specific questionnaires and tests. The morphology of corneal nerves and dendritic cells (DCs) was evaluated by in vivo confocal microscopy. Function of corneal innervation was evaluated by corneal sensitivity. Concentrations of tear cytokines (interleukin [IL]-6, IL-23, IL-17A, and interferon-γ) and neuropeptides (α-melanocyte-stimulating hormone, neurotensin, β-endorphin, oxytocin, and substance P [SP]) were measured using the Luminex assay. RESULTS Most patients with chronic ocular pain experienced mild to moderate pain; the most common types included stimulated pain (provoked by wind and light), burning pain, and pressure sensation. More severe dry eye (P < 0.001), anxiety symptoms (P = 0.026), lower Schirmer I test values (P = 0.035), lower corneal nerve density (P = 0.043), and more activated DCs (P = 0.041) were observed in patients with ocular pain. Tear concentrations of SP and oxytocin were significantly higher in patients with ocular pain (P = 0.001, P = 0.021, respectively). Furthermore, significant correlations were observed among ocular pain severity, SP, and anxiety levels. CONCLUSIONS Patients with DED after FS-LASIK who have chronic ocular pain show more severe ocular and psychological discomfort and higher tear levels of neuropeptides. Furthermore, ocular pain severity is correlated with tear SP levels. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT05600985.
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Affiliation(s)
- Lu Zhao
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yifan Zhou
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Hongyu Duan
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yu Zhang
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Baikai Ma
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Tingting Yang
- Department of Ophthalmology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Jiawei Chen
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Yueguo Chen
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China.
| | - Hong Qi
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Peking University Health Science Center, Institute of Medical Technology, 49 North Garden Road, Haidian District, Beijing, 100191, China.
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China.
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13
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Chen X, Tang SJ. Neural Circuitry Polarization in the Spinal Dorsal Horn (SDH): A Novel Form of Dysregulated Circuitry Plasticity during Pain Pathogenesis. Cells 2024; 13:398. [PMID: 38474361 PMCID: PMC10930392 DOI: 10.3390/cells13050398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Pathological pain emerges from nociceptive system dysfunction, resulting in heightened pain circuit activity. Various forms of circuitry plasticity, such as central sensitization, synaptic plasticity, homeostatic plasticity, and excitation/inhibition balance, contribute to the malfunction of neural circuits during pain pathogenesis. Recently, a new form of plasticity in the spinal dorsal horn (SDH), named neural circuit polarization (NCP), was discovered in pain models induced by HIV-1 gp120 and chronic morphine administration. NCP manifests as an increase in excitatory postsynaptic currents (EPSCs) in excitatory neurons and a decrease in EPSCs in inhibitory neurons, presumably facilitating hyperactivation of pain circuits. The expression of NCP is associated with astrogliosis. Ablation of reactive astrocytes or suppression of astrogliosis blocks NCP and, concomitantly, the development of gp120- or morphine-induced pain. In this review, we aim to compare and integrate NCP with other forms of plasticity in pain circuits to improve the understanding of the pathogenic contribution of NCP and its cooperation with other forms of circuitry plasticity during the development of pathological pain.
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Affiliation(s)
| | - Shao-Jun Tang
- Stony Brook University Pain and Anesthesia Research Center (SPARC), Department of Anesthesiology, Stony Brook University, Stony Brook, NY 11794, USA;
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14
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Gałęcka I, Szyryńska N, Całka J. Influence of polyethylene terephthalate (PET) microplastic on selected active substances in the intramural neurons of the porcine duodenum. Part Fibre Toxicol 2024; 21:5. [PMID: 38321545 PMCID: PMC10845528 DOI: 10.1186/s12989-024-00566-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 01/29/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Currently, society and industry generate huge amounts of plastics worldwide. The ubiquity of microplastics is obvious, but its impact on the animal and human organism remains not fully understood. The digestive tract is one of the first barriers between pathogens and xenobiotics and a living organism. Its proper functioning is extremely important in order to maintain homeostasis. The aim of this study was to determine the effect of microplastic on enteric nervous system and histological structure of swine duodenum. The experiment was carried out on 15 sexually immature gilts, approximately 8 weeks old. The animals were randomly divided into 3 study groups (n = 5/group). The control group received empty gelatin capsules once a day for 28 days, the first research group received daily gelatin capsules with polyethylene terephthalate (PET) particles as a mixture of particles of various sizes (maximum particle size 300 µm) at a dose of 0.1 g/animal/day. The second study group received a dose ten times higher-1 g/animal/day. RESULTS A dose of 1 g/day/animal causes more changes in the enteric nervous system and in the histological structure of duodenum. Statistically significant differences in the expression of cocaine and amphetamine regulated transcript, galanin, neuronal nitric oxide synthase, substance P, vesicular acetylcholine transporter and vasoactive intestinal peptide between control and high dose group was noted. The histopathological changes were more frequently observed in the pigs receiving higher dose of PET. CONCLUSION Based on this study it may be assumed, that oral intake of microplastic might have potential negative influence on digestive tract, but it is dose-dependent.
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Affiliation(s)
- Ismena Gałęcka
- Department of Epizootiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland.
- Deparment of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland.
| | - Natalia Szyryńska
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
| | - Jarosław Całka
- Deparment of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
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15
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Bazan HEP, Pham TL. A new R,R-RvD6 isomer with protective actions following corneal nerve injury. Prostaglandins Other Lipid Mediat 2024; 170:106802. [PMID: 38036037 DOI: 10.1016/j.prostaglandins.2023.106802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/05/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
The transparent cornea is the most densely innervated tissue in the body, primarily by sensory nerves originating from the trigeminal ganglia (TG). Damage to corneal nerves reduces sensitivity and tear secretion and results in dry eye. Consequently, ocular pain, for which no satisfactory therapies exist, arises in many cases. Treatment of injured corneas with pigment epithelium-derived factor (PEDF) combined with docosahexaenoic acid (DHA) stimulates nerve regeneration in models of refractive surgery, which damages nerves. The mechanism involves the synthesis of a stereoisomer of resolvin D6 (R,R-RvD6) formed after incorporating DHA into membrane lipids. Activation of a PEDF receptor (PEDF-R) with phospholipase activity releases DHA to synthesize the new resolvin isomer, which is secreted via tears. Topical treatment of mice corneas with R,R-RvD6 shows higher bioactivity in regenerating nerves and increasing sensitivity compared to PEDF+DHA. It also stimulates a transcriptome in the TG that modulates genes involved in ocular pain. Our studies suggest an important therapeutic role for R,R-RvD6 in regenerating corneal nerves and decreasing pain resulting from dry eye.
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Affiliation(s)
- Haydee E P Bazan
- Neuroscience Center of Excellence and Department of Ophthalmology, School of Medicine, Louisiana State University Health Sciences Center New Orleans, New Orleans, LA, USA.
| | - Thang L Pham
- Neuroscience Center of Excellence and Department of Ophthalmology, School of Medicine, Louisiana State University Health Sciences Center New Orleans, New Orleans, LA, USA.
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Alvarez-Flores MP, Correia Batista IDF, Villas Boas IM, Bufalo MC, de Souza JG, Oliveira DS, Bonfá G, Fernandes CM, Marques Porto R, Lichtenstein F, Picolo G, Tambourgi DV, Chudzinski-Tavassi AM, Ibañez OCM, Teixeira C. Snake and arthropod venoms: Search for inflammatory activity in human cells involved in joint diseases. Toxicon 2024; 238:107568. [PMID: 38110040 DOI: 10.1016/j.toxicon.2023.107568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
Most anti-inflammatory drugs currently adopted to treat chronic inflammatory joint diseases can alleviate symptoms but they do not lead to remission. Therefore, new and more efficient drugs are needed to block the course of joint inflammatory diseases. Animal venoms, rich in bioactive compounds, can contribute as valuable tools in this field of research. In this study, we first demonstrate the direct action of venoms on cells that constitute the articular joints. We established a platform consisting of cell-based assays to evaluate the release of cytokines (IL-6, IL-8, TNFα, IL-1β, and IL-10) by human chondrocytes, synoviocytes and THP1 macrophages, as well as the release of neuropeptides (substance-P and β-endorphin) by differentiated sensory neuron-like cells, 24 h after stimulation of cells with 21 animal venoms from snake and arthropod species, sourced from different taxonomic families and geographic origins. Results demonstrated that at non-cytotoxic concentrations, the venoms activate at varying degrees the secretion of inflammatory mediators involved in the pathology of articular diseases, such as IL-6, IL-8, and TNF-α by chondrocytes, synoviocytes, and macrophages and of substance P by neuron-like cells. Venoms of the Viperidae snake family were more inflammatory than those of the Elapidae family, while venoms of Arthropods were less inflammatory than snake venoms. Notably, some venoms also induced the release of the anti-inflammatory IL-10 by macrophages. However, the scorpion Buthus occitanus venom induced the release of IL-10 without increasing the release of inflammatory cytokines by macrophages. Since the cell types used in the experiments are crucial elements in joint inflammatory processes, the results of this work may guide future research on the activation of receptors and inflammatory signaling pathways by selected venoms in these particular cells, aiming at discovering new targets for therapeutic intervention.
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Affiliation(s)
| | | | - Isadora Maria Villas Boas
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Immunochemistry, Instituto Butantan, Sao Paulo, Brazil
| | | | - Jean Gabriel de Souza
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Immunogenetics, Instituto Butantan, Sao Paulo, Brazil
| | | | - Giuliano Bonfá
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Immunochemistry, Instituto Butantan, Sao Paulo, Brazil
| | - Cristina Maria Fernandes
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Pharmacology, Instituto Butantan, Sao Paulo, Brazil
| | - Rafael Marques Porto
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil
| | - Flavio Lichtenstein
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil
| | - Gisele Picolo
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Pain and Signaling, Instituto Butantan, Sao Paulo, Brazil
| | | | | | - Olga Célia Martinez Ibañez
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Immunogenetics, Instituto Butantan, Sao Paulo, Brazil.
| | - Catarina Teixeira
- Centre of Excellence in New Target Discovery, Instituto Butantan, Sao Paulo, Brazil; Laboratory of Pharmacology, Instituto Butantan, Sao Paulo, Brazil.
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Bonelli F, Campestre F, Lasagni Vitar RM, Demirsoy IH, Fonteyne P, Ferrari G. Aprepitant Restores Corneal Sensitivity and Reduces Pain in DED. Transl Vis Sci Technol 2024; 13:9. [PMID: 38345550 PMCID: PMC10866158 DOI: 10.1167/tvst.13.2.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/08/2024] [Indexed: 02/15/2024] Open
Abstract
Purpose This study aims to assess the efficacy of two aprepitant formulations (X1 and X2), in a preclinical model of dry eye disease (DED) induced by benzalkonium chloride (BAK). Methods Two aprepitant formulations were tested on 7 to 8-week-old male mice for their efficacy. In vivo corneal fluorescein staining assessed epithelial damage as the primary end point on days 0, 3, 5, 7, 9, 12, and 14 using slit-lamp microscopy. The DED model was induced with 0.2% BAK twice daily for the first week and once daily for the next week. Mice were randomly assigned to 5 treatment groups: Aprepitant X1 (n = 10) and X2 (n = 10) formulation, 2 mg/mL dexamethasone (n = 10), control vehicle X (n = 10), 0.2% hyaluronic acid (n = 10), or no treatment (n = 10). Eye wiping, phenol red, and Cochet Bonnet tests assessed ocular pain, tear fluid secretion, and nerve function. After 7 days, the mice were euthanized to quantify leukocyte infiltration and corneal nerve density. Results Topical aprepitant X1 reduced BAK-induced corneal damage and pain compared to gel vehicle X (P = 0.007) and dexamethasone (P = 0.021). Aprepitant X1 and X2 improved corneal sensitivity versus gel vehicle X and dexamethasone (P < 0.001). Aprepitant X1 reduced leukocyte infiltration (P < 0.05) and enhanced corneal nerve density (P < 0.001). Tear fluid secretion remained statistically unchanged in both the X1 and X2 groups. Conclusions Aprepitant formulation X1 reduced pain, improved corneal sensitivity and nerve density, ameliorated epitheliopathy, and reduced leukocyte infiltration in male mouse corneas. Translational Relevance Aprepitant emerges as a safe, promising therapeutic prospect for the amelioration of DED's associated symptoms.
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Affiliation(s)
- Filippo Bonelli
- Department of Ophthalmology, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Department of Cell Biology–Inspired Tissue Engineering, MERLN Institute for Technology–Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Fabiola Campestre
- Department of Ophthalmology, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | - Ibrahim Halil Demirsoy
- Department of Ophthalmology, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Philippe Fonteyne
- Department of Ophthalmology, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giulio Ferrari
- Department of Ophthalmology, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
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18
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Zhou MY, Yao CH, Yang YJ, Li X, Yang J, Liu JH, Yu BY, Dai WL. Based on spinal central sensitization creating analgesic screening approach to excavate anti-neuropathic pain ingredients of Corydalis yanhusuo W.T.Wang. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117084. [PMID: 37666376 DOI: 10.1016/j.jep.2023.117084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Corydalis Rhizome (RC) as a traditional analgesic Chinese medicine is the dried tuber of Corydalis yanhusuo W.T.Wang. Many efforts have revealed that RC could effectively alleviate neuropathic pain, while its active ingredients in neuropathic pain are still not clear. AIM OF THE STUDY Spinal central sensitization contributes greatly to neuropathic pain, and neuron, astrocyte and microglia play important roles in spinal central sensitization. The aim of the present study is to excavate active compounds in RC regulating spinal central sensitization to inhibit neuropathic pain. MATERIALS AND METHODS Immunofluorescence and western blotting were used to determine protein expression levels. Gene expression levels were detected by RT-PCR. PC12 neuronal cells, C6 astrocyte cells, and BV2 microglia cells were cultured for in vitro studies. Targeting multi types of cells extraction combined with HPLC-Q-TOF-MS/MS was established to identify components binding to above cells. Animal studies were used to verify the analgesic activities of components. RESULTS Total alkaloids of RC (RC-TA) significantly relieved neuropathic pain in chronic constriction injury (CCI) rats and repressed spinal central sensitization. Eight components of RC-TA were found to bind to PC12, C6, or BV2 cells. They could respectively suppress the activation of cells in vitro and alleviate CCI-induced neuropathic pain, among which glaucine and dehydrocorydaline induced antinociception was stronger than l-THP. Meanwhile, glaucine had no effect on acute or chronic inflammatory pain, and its antinociception in neuropathic pain could be abolished by dopamine D1 receptor agonist. CONCLUSIONS Employing multi types of cells based on spinal central sensitization rather than single cell may allow for more thorough excavation of active substances. Glaucine was firstly found could attenuate neuropathic pain but not other types of pain which indicated that different alkaloids in RC exert distinct analgesic effects on different pain models, and gluacine has the potential to be developed as an analgesic drug specifically for neuropathic pain relieving.
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Affiliation(s)
- Meng-Yuan Zhou
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Chang-Heng Yao
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Yu-Jie Yang
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Xue Li
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Jin Yang
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Ji-Hua Liu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China.
| | - Bo-Yang Yu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China.
| | - Wen-Ling Dai
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
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19
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Park DS, Oh S, Jin YJ, Na MH, Kim M, Kim JH, Hyun DY, Cho KH, Hong YJ, Kim JH, Ahn Y, Hermida-Prieto M, Vázquez-Rodríguez JM, Gutiérrez-Chico JL, Mariñas-Pardo L, Lim KS, Park JK, Byeon DH, Cho YN, Kee SJ, Sim DS, Jeong MH. Preliminary Investigation on Efficacy and Safety of Substance P-Coated Stent for Promoting Re-Endothelialization: A Porcine Coronary Artery Restenosis Model. Tissue Eng Regen Med 2024; 21:53-64. [PMID: 37973692 PMCID: PMC10764706 DOI: 10.1007/s13770-023-00608-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/10/2023] [Accepted: 10/11/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Current polymer-based drug-eluting stents (DESs) have fundamental issues about inflammation and delayed re-endothelializaton of the vessel wall. Substance-P (SP), which plays an important role in inflammation and endothelial cells, has not yet been applied to coronary stents. Therefore, this study compares poly lactic-co-glycolic acid (PLGA)-based everolimus-eluting stents (PLGA-EESs) versus 2-methacryloyloxyethyl phosphorylcholine (MPC)-based SP-eluting stents (MPC-SPs) in in-vitro and in-vivo models. METHODS The morphology of the stent surface and peptide/drug release kinetics from stents were evaluated. The in-vitro proliferative effect of SP released from MPC-SP is evaluated using human umbilical vein endothelial cell. Finally, the safety and efficacy of the stent are evaluated after inserting it into a pig's coronary artery. RESULTS Similar to PLGA-EES, MPC-SP had a uniform surface morphology with very thin coating layer thickness (2.074 μm). MPC-SP showed sustained drug release of SP for over 2 weeks. Endothelial cell proliferation was significantly increased in groups treated with SP (n = 3) compared with the control (n = 3) and those with everolimus (n = 3) (SP: 118.9 ± 7.61% vs. everolimus: 64.3 ± 12.37% vs. the control: 100 ± 6.64%, p < 0.05). In the animal study, the percent stenosis was higher in MPC-SP group (n = 7) compared to PLGA-EES group (n = 7) (MPC-SP: 28.6 ± 10.7% vs. PLGA-EES: 16.7 ± 6.3%, p < 0.05). MPC-SP group showed, however, lower inflammation (MPC-SP: 0.3 ± 0.26 vs. PLGA-EES: 1.2 ± 0.48, p < 0.05) and fibrin deposition (MPC-SP: 1.0 ± 0.73 vs. PLGA-EES: 1.5 ± 0.59, p < 0.05) around the stent strut. MPC-SP showed more increased expression of cluster of differentiation 31, suggesting enhanced re-endothelialization. CONCLUSION Compared to PLGA-EES, MPC-SP demonstrated more decreased inflammation of the vascular wall and enhanced re-endothelialization and stent coverage. Hence, MPC-SP has the potential therapeutic benefits for the treatment of coronary artery disease by solving limitations of currently available DESs.
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Affiliation(s)
- Dae Sung Park
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- The Research Institute of Medical Sciences, Chonnam National University, Gwangju, Korea
| | - Seok Oh
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Yu Jeong Jin
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
| | - Mi Hyang Na
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
| | - Munki Kim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
| | - Jeong Ha Kim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
| | - Dae Young Hyun
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Kyung Hoon Cho
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young Joon Hong
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ju Han Kim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Youngkeun Ahn
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Manuel Hermida-Prieto
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), A Coruña, Spain
| | - José Manuel Vázquez-Rodríguez
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), A Coruña, Spain
- Servicio de Cardiología, Complexo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Juan Luis Gutiérrez-Chico
- Bundeswehrzentralkrankenhaus (Federal Army Central Military Hospital), Koblenz, Germany
- Universidad Alfonso X el Sabio, Madrid, Spain
| | - Luis Mariñas-Pardo
- Facultad de Ciencias de La Salud, Universidad Internacional de Valencia (VIU), Valencia, Spain
| | - Kyung Seob Lim
- Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Korea
| | | | | | - Young-Nan Cho
- Department of Clinical Laboratory Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Seung-Jung Kee
- Department of Clinical Laboratory Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Doo Sun Sim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea.
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea.
| | - Myung Ho Jeong
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea.
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea.
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20
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Gehris J, Ervin C, Hawkins C, Womack S, Churillo AM, Doyle J, Sinusas AJ, Spinale FG. Fibroblast activation protein: Pivoting cancer/chemotherapeutic insight towards heart failure. Biochem Pharmacol 2024; 219:115914. [PMID: 37956895 PMCID: PMC10824141 DOI: 10.1016/j.bcp.2023.115914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/21/2023]
Abstract
An important mechanism for cancer progression is degradation of the extracellular matrix (ECM) which is accompanied by the emergence and proliferation of an activated fibroblast, termed the cancer associated fibroblast (CAF). More specifically, an enzyme pathway identified to be amplified with local cancer progression and proliferation of the CAF, is fibroblast activation protein (FAP). The development and progression of heart failure (HF) irrespective of the etiology is associated with left ventricular (LV) remodeling and changes in ECM structure and function. As with cancer, HF progression is associated with a change in LV myocardial fibroblast growth and function, and expresses a protein signature not dissimilar to the CAF. The overall goal of this review is to put forward the postulate that scientific discoveries regarding FAP in cancer as well as the development of specific chemotherapeutics could be pivoted to target the emergence of FAP in the activated fibroblast subtype and thus hold translationally relevant diagnostic and therapeutic targets in HF.
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Affiliation(s)
- John Gehris
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Charlie Ervin
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Charlotte Hawkins
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Sydney Womack
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Amelia M Churillo
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Jonathan Doyle
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Albert J Sinusas
- Yale University Cardiovascular Imaging Center, New Haven CT, United States
| | - Francis G Spinale
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States.
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21
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Jing B, Chen ZN, Si WM, Zhao JJ, Zhao GP, Zhang D. (+)-Catechin Alleviates CCI-Induced Neuropathic Pain in Rats by Modulating the IL34/CSFIR Axis and Attenuating the Schwann Cell-Macrophage Cascade Response in the DRG. Mol Neurobiol 2023:10.1007/s12035-023-03876-w. [PMID: 38159197 DOI: 10.1007/s12035-023-03876-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024]
Abstract
The aim of this study was to investigate the potential therapeutic applications of (+)-catechin in the treatment of neuropathic pain. In vivo study, 32 SD rats were randomly divided into four groups: sham group, chronic constriction injury (CCI) group, CCI + ibuprofen group and CCI+ (+)-catechin group. They were subjected to behavioural tests, ELISA, immunohistochemistry and Western blotting. The mechanisms involved were investigated using specific inhibitors in cell experiments. Results of in vivo experiments showed that (+)-catechin could reduce the cold sensitivity pain in a rat model of CCI; ELISA and immunohistochemistry results showed that (+)-catechin could decrease the levels of IL-8, IL-6, TNF-α, CCL2 and CCL5 in serum and the expression levels of nNOS, COX2, IL6, TNF-α, IBA-1 and CSF1R in DRG of CCI rats. Finally, western blot confirmed that (+)-catechin could diminish the levels of IL-34/CSF1R/JAK2/STAT3 signalling pathway in DRG of CCI rats. In vitro studies showed that (+)-catechin reduced IL-34 secretion in LPS-induced RSC96 cells. Meanwhile, (+)-catechin administration in LPS-induced Schwann cell-conditioned medium (L-CM) significantly inhibited the proliferation and migration of RAW264.7 cells; in addition, L-CM+(+)-catechin reduced the activation of the CSF1R/JAK2/STAT3 signalling pathway. (+)-Catechin attenuated the Schwann cell-macrophage cascade response in the DRG by modulating the IL34/CSFIR axis and inhibiting activation of the JAK2/STAT3 pathway, thereby attenuating CCI-induced neuropathic pain in rats.
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Affiliation(s)
- Bei Jing
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Zhen-Ni Chen
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Wai-Mei Si
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Jia-Ji Zhao
- Chemistry & Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, China.
| | - Guo-Ping Zhao
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, China.
| | - Di Zhang
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, China.
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22
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Hu M, Scheffel J, Elieh-Ali-Komi D, Maurer M, Hawro T, Metz M. An update on mechanisms of pruritus and their potential treatment in primary cutaneous T-cell lymphoma. Clin Exp Med 2023; 23:4177-4197. [PMID: 37555911 PMCID: PMC10725374 DOI: 10.1007/s10238-023-01141-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/12/2023] [Indexed: 08/10/2023]
Abstract
Primary cutaneous T-cell lymphomas (CTCL), which include mycosis fungoides (MF) and Sézary syndrome (SS), are a group of lymphoproliferative disorders characterized by clonal accumulation of neoplastic T-lymphocytes in the skin. Severe pruritus, one of the most common and distressing symptoms in primary CTCL, can significantly impair emotional well-being, physical functioning, and interpersonal relationships, thus greatly reducing quality of life. Unfortunately, effectively managing pruritus remains challenging in CTCL patients as the underlying mechanisms are, as of yet, not fully understood. Previous studies investigating the mechanisms of itch in CTCL have identified several mediators and their corresponding antagonists used for treatment. However, a comprehensive overview of the mediators and receptors contributing to pruritus in primary CTCL is lacking in the current literature. Here, we summarize and review the mediators and receptors that may contribute to pruritus in primary CTCL to explore the mechanisms of CTCL pruritus and identify effective therapeutic targets using the PubMed and Web of Science databases. Studies were included if they described itch mediators and receptors in MF and SS. Overall, the available data suggest that proteases (mainly tryptase), and neuropeptides (particularly Substance P) may be of greatest interest. At the receptor level, cytokine receptors, MRGPRs, and TRP channels are most likely important. Future drug development efforts should concentrate on targeting these mediators and receptors for the treatment of CTCL pruritus.
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Affiliation(s)
- Man Hu
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Hindenburgdamm 27, 12203, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Jörg Scheffel
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Hindenburgdamm 27, 12203, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Daniel Elieh-Ali-Komi
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Hindenburgdamm 27, 12203, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Marcus Maurer
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Hindenburgdamm 27, 12203, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Tomasz Hawro
- Department of Dermatology, Allergology and Venereology, Institute and Comprehensive Center for Inflammation Medicine, University Medical Center Schleswig-Holstein, Lübeck, Germany.
| | - Martin Metz
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Hindenburgdamm 27, 12203, Berlin, Germany.
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany.
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23
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Krawczyk A, Mozel S, Rycerz K, Jaworska-Adamu J, Arciszewski MB. Immunoreactivity of glutamine synthetase in satellite glia around various subpopulations of lumbar dorsal root ganglia neurons in adult rats treated with monosodium glutamate. J Chem Neuroanat 2023; 134:102347. [PMID: 37838216 DOI: 10.1016/j.jchemneu.2023.102347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
Satellite glial cells (SGCs), involved inter alia in glutamate (Glu) metabolism, form a glial sheath around sensory neurons of dorsal root ganglia (DRGs). SGCs show a presence of glutamine synthetase (GS) which transform uptaken Glu into glutamine (Gln). In DRGs, this aminoacid is used mainly by small neurons which are able to synthetize substance P (SP) that play a crucial role in nociception. The aim of the study was to define the influence of monosodium glutamate (MSG) on GS immunoreactivity in satellite glia around various subpopulations of neurons including SP immunopositive cells in DRGs of adult rats. The studies were carried out on lumbar DRGs slides in rats which received subcutaneous injection of saline solution (control group) or 4 g/kg b. w. of MSG (MSG group). Immunofluorescence reactions were conducted with use of anti-GS and anti-SP antibodies. Administration of MSG to adult rats increased the GS immunoexpression in SGCs. In rats receiving MSG, a number of small neurons with GS-immunopositive glial sheath was not altered when compared to control individuals, whereas there was a statistically significant increase of GS immunoexpression in SGCs around large and medium neurons. Moreover, in these animals, a statistically significant increase in the number of small SP-positive neurons with GS-positive glial sheath was observed. SP is responsible for transmission of pain, thus the obtained results may be useful for further research concerning the roles of glia in nociceptive pathway regulation.
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Affiliation(s)
- Aleksandra Krawczyk
- Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Sylwia Mozel
- Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland.
| | - Karol Rycerz
- Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Jadwiga Jaworska-Adamu
- Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Marcin Bartłomiej Arciszewski
- Department of Animal Anatomy and Histology, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
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MacDonald DI, Jayabalan M, Seaman J, Nickolls A, Chesler A. Pain persists in mice lacking both Substance P and CGRPα signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.15.567208. [PMID: 38076807 PMCID: PMC10705526 DOI: 10.1101/2023.11.15.567208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The neuropeptides Substance P and CGRPα have long been thought important for pain sensation. Both peptides and their receptors are expressed at high levels in pain-responsive neurons from the periphery to the brain making them attractive therapeutic targets. However, drugs targeting these pathways individually did not relieve pain in clinical trials. Since Substance P and CGRPα are extensively co-expressed we hypothesized that their simultaneous inhibition would be required for effective analgesia. We therefore generated Tac1 and Calca double knockout (DKO) mice and assessed their behavior using a wide range of pain-relevant assays. As expected, Substance P and CGRPα peptides were undetectable throughout the nervous system of DKO mice. To our surprise, these animals displayed largely intact responses to mechanical, thermal, chemical, and visceral pain stimuli, as well as itch. Moreover, chronic inflammatory pain and neurogenic inflammation were unaffected by loss of the two peptides. Finally, neuropathic pain evoked by nerve injury or chemotherapy treatment was also preserved in peptide-deficient mice. Thus, our results demonstrate that even in combination, Substance P and CGRPα are not required for the transmission of acute and chronic pain.
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Affiliation(s)
- Donald Iain MacDonald
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, United States
| | - Monessha Jayabalan
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, United States
| | - Jonathan Seaman
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, United States
| | - Alec Nickolls
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, United States
| | - Alexander Chesler
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, United States
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, United States
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25
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Ko JH, Kim SN. Effect of acupuncture on pain and substance P levels in middle-aged women with chronic neck pain. Front Neurol 2023; 14:1267952. [PMID: 37928143 PMCID: PMC10620714 DOI: 10.3389/fneur.2023.1267952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/04/2023] [Indexed: 11/07/2023] Open
Abstract
Chronic neck pain is a leading health issue affecting a significant proportion of the global population. Multiple treatment options for chronic neck pain include anti-inflammatory drugs and analgesics. Acupuncture has been widely used for the treatment of chronic pain. In this study, we aimed to determine the efficacy of acupuncture for female patients with chronic neck pain. Twenty-three participants were enrolled in the study, and participants waited 4 weeks without acupuncture treatment and then received 4 weeks of treatment. One-way ANOVA with repeated measures was used to determine differences in the visual analogue scale (VAS), neck disability index (NDI), and substance P (SP) over time. The subjects' pain intensity and degree of disability due to neck pain were measured as primary outcomes. SP in the blood was also analyzed as a secondary outcome. There was no significant difference between the VAS score and NDI value of baseline and after 4 weeks waiting. However, there was an improvement in both VAS and NDI after 4 weeks treatment. SP level was decreased after 4 weeks treatment. We could conclude that acupuncture is effective in alleviating chronic neck pain. Moreover, our findings revealed the efficacy of acupuncture on chronic pain with potential underlying biological mechanisms.
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Affiliation(s)
| | - Seung-Nam Kim
- College of Korean Medicine, Dongguk University, Seoul, Republic of Korea
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26
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Bonelli F, Demirsoy I, Lasagni Vitar RM, Fonteyne P, Ferrari G. Topical formulations of Aprepitant are safe and effective in relieving pain and inflammation, and drive neural regeneration. Ocul Surf 2023; 30:92-103. [PMID: 37690516 DOI: 10.1016/j.jtos.2023.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
PURPOSE To test long-term ocular toxicity and analgesic/anti-inflammatory efficacy of two novel ocular formulations of neurokinin 1 receptor (NK1R) antagonist Aprepitant. METHODS for toxicity studies, two Aprepitant formulations (X and Y) were tested on C57BL/6 N mice. Gold standards were 0.4% Oxybuprocaine, 0.1% Diclofenac, or saline. For efficacy studies, C57BL/6 N mice underwent corneal alkali burn, and then received Aprepitant formulation X, Dexamethasone or saline. Eye-drops were applied 3 times/day for 90 days (toxicity) and 14 days (efficacy). Stromal opacity, corneal epithelial damage, nociception and sensitivity were assessed in vivo. The eye-wiping test and corneal sensitivity were assessed to evaluate analgesic efficacy and nerve function. At the end of the experiments mice were euthanized, and corneas were dissected for immunohistochemistry and RT-PCR analyses. RESULTS In normal mice, formulation X was not toxic when topically administered for 90 days. Formulation Y was associated with increased leukocyte infiltration in the cornea (p < 0.001). X1 and X2 formulations significantly reduced corneal pain, as Diclofenac and Oxybuprocaine, but did not reduce corneal sensitivity. Formulation Y, instead, was not analgesic at any time point. In the alkali burn model, X1 and X2 formulation enhanced epithelial damage recovery, and reduced inflammation both at day 7 and 14. Moreover, formulation X showed a stronger analgesic effect when compared to the saline and Dexamethasone groups (p < 0.01). Finally, formulation X1 and X2 restored corneal sensitivity by promoting corneal nerve regeneration. CONCLUSIONS Aprepitant X formulation is a promising candidate for the treatment of pain associated with inflammation of the ocular surface.
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Affiliation(s)
- Filippo Bonelli
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy; Fondazione Banca degli Occhi del Veneto, Venice, Italy
| | - Ibrahim Demirsoy
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Romina Mayra Lasagni Vitar
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Philippe Fonteyne
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giulio Ferrari
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy.
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Marques DP, Chacur M, Martins DO. Photobiomodulation and vitamin B treatment alleviate both thermal and mechanical orofacial pain in rats. Photochem Photobiol Sci 2023; 22:2315-2327. [PMID: 37340216 DOI: 10.1007/s43630-023-00452-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/12/2023] [Indexed: 06/22/2023]
Abstract
PURPOSE The present study investigates the efficacy of Photobiomodulation (PBM) and Vitamin B Complex (VBC) to relieve pain, both in separately and combined (PBM and VBC). METHODS Rats with chronic constriction injury of the right infraorbital nerve (CCI-IoN) or Sham surgery were used. PBM was administered at a wavelength of 904 nm and energy density of 6.23 J/cm2 and VBC (containing B1, B6 and B12) subcutaneously, both separately and combined. Behavioral tests were performed to assess mechanical and thermal hypersensitivity before and after CCI and after PBM, VBC, or PBM + VBC. The expression of inflammatory proteins in the trigeminal ganglion and the immunohistochemical alterations of Periaqueductal Gray (PAG) astrocytes and microglia were examined following CCI and treatments. RESULTS All testeds treatments reversed the painful behavior. The decrease in pain was accompanied by a decrease of Glial Fibrillary Acidic Protein (GFAP), a specific astrocytic marker, and Ionized calcium-binding adaptor molecule 1 (Iba-1), a marker of microglia, and decreased expression of Transient Receptor Potential Vanilloid 1 (TRPV1), Substance P, and Calcitonin Gene-Related Peptide (CGRP) induced by CCI-IoN in PAG and Trigeminal ganglion. Furthermore, both treatments showed a higher expression of Cannabinoid-type 1 (CB1) receptor in the trigeminal ganglion compared to CCI-IoN rats. Our results show that no difference was observed between groups. CONCLUSION We showed that PBM or VBC regulates neuroinflammation and reduces inflammatory protein expression. However, the combination of PBM and VBC did not enhance the effectiveness of both therapies alone.
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Affiliation(s)
- Daniel Pereira Marques
- Departamento de Anatomia, Laboratory of Functional Neuroanatomy of Pain, Universidade de São Paulo Instituto de Ciências Biomédicas, São Paulo, São Paulo, Brazil
| | - Marucia Chacur
- Departamento de Anatomia, Laboratory of Functional Neuroanatomy of Pain, Universidade de São Paulo Instituto de Ciências Biomédicas, São Paulo, São Paulo, Brazil
| | - Daniel Oliveira Martins
- Departamento de Anatomia, Laboratory of Functional Neuroanatomy of Pain, Universidade de São Paulo Instituto de Ciências Biomédicas, São Paulo, São Paulo, Brazil.
- Division of Neuroscience/Hospital Sírio-Libânes, Street Daher Cutait, 69, São Paulo, São Paulo, 01308-060, Brazil.
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Zhang BW, Dong H, Wu Z, Jiang X, Zou W. An Overview of the Mechanisms Involved in Neuralgia. J Inflamm Res 2023; 16:4087-4101. [PMID: 37745793 PMCID: PMC10516189 DOI: 10.2147/jir.s425966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/26/2023] [Indexed: 09/26/2023] Open
Abstract
Neuralgia is a frequently occurring condition that causes chronic pain and burdens both patients and their families. Earlier research indicated that anti-inflammatory treatment, which was primarily utilized to address conditions like neuralgia, resulted in positive outcomes. However, recent years have witnessed the emergence of various novel mechanisms associated with pain-related disorders. This review provides a concise overview of the inflammatory mechanisms involved in neuralgia. It also examines recent advancements in research, exploring the influence of ion channels and synaptic proteins on neuralgia and its complications. Additionally, the interactions between these mechanisms are discussed with the aim of suggesting innovative therapeutic approaches and research directions for the management of neuralgia.
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Affiliation(s)
- Bai-Wen Zhang
- Heilongjiang University of Chinese Medicine, Harbin, 150040, People’s Republic of China
| | - Hao Dong
- Heilongjiang University of Chinese Medicine, Harbin, 150040, People’s Republic of China
| | - Zhe Wu
- Heilongjiang University of Chinese Medicine, Harbin, 150040, People’s Republic of China
| | - Xi Jiang
- Jinzhou Medical University, Jinzhou, 121001, People’s Republic of China
| | - Wei Zou
- The Third Department of Acupuncture and Moxibustion, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, 150040, People’s Republic of China
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Chen J, Ye P, Gu R, Zhu H, He W, Mu X, Wu X, Pang H, Han F, Nie X. Neuropeptide substance P: A promising regulator of wound healing in diabetic foot ulcers. Biochem Pharmacol 2023; 215:115736. [PMID: 37549795 DOI: 10.1016/j.bcp.2023.115736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/09/2023]
Abstract
In the past, neuropeptide substance P (SP) was predominantly recognized as a neuroinflammatory factor, while its potent healing activity was overlooked. This paper aims to review the regulatory characteristics of neuropeptide SP in both normal and diabetic wound healing. SP actively in the regulation of wound healing-related cells directly and indirectly, exhibiting robust inflammatory properties, promoting cell proliferation and migration and restoring the activity and paracrine ability of skin cells under diabetic conditions. Furthermore, SP not only regulates healing-related cells but also orchestrates the immune environment, thereby presenting unique and promising application prospects in wound intervention. As new SP-based preparations are being explored, SP-related drugs are poised to become an effective therapeutic intervention for diabetic foot ulcers (DFU).
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Affiliation(s)
- Jitao Chen
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Penghui Ye
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Rifang Gu
- University Medical Office, Zunyi Medical University, Zunyi 563000, China
| | - Huan Zhu
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Wenjie He
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Xingrui Mu
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Xingqian Wu
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Huiwen Pang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Felicity Han
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Xuqiang Nie
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, China; Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia; Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi 563000, China.
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Zheng Y, Wang N, Chen Z, Shi L, Xu X. Blocking SP/NK1R signaling improves spinal cord hemisection by inhibiting the release of pro-inflammatory cytokines in rabbits. J Spinal Cord Med 2023; 46:848-858. [PMID: 35776091 PMCID: PMC10446800 DOI: 10.1080/10790268.2021.2024029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE Incomplete spinal cord injury (SCI) is the most common spinal cord injury in clinic, however its mechanism is still not fully understood. DESIGN We constructed the rabbit spinal cord hemisection (SCH) model and used RT-PCR, western blotting, immunohistochemistry, and immunofluorescence experiments to explore the potential mechanism of SCI. SETTING The sham operation (SH) group, the observation (OB, which is the SCH) group, the OB+ substance p (SP) inhibitor group, the OB + NK1R inhibitor group, the OB + NK1R agonist group and the OB + SP inhibitor + NK1R agonist group. PARTICIPANTS New Zealand white rabbits. INTERVENTIONS Use NK1R inhibitors, NK1R agonists, SP inhibitors to treat the SCH model. OUTCOME MEASURES IL-1β, IKKγ, IL-6 and NF-κB. RESULTS The results showed that nissl bodies, inflammatory cells and SP increased notably in the spinal cord cells of the rabbit SCH model. Through in vivo experiments with SP or NK1R inhibitors or NK1R agonists, we found that inhibiting SP/NK1R signaling can help improve SCH by inhibiting the release of pro-inflammatory cytokines IL-1β, IKKγ, IL-6 and NF-κB. REGISTERED TRIALS Animal experiments were approved by Ruijin Hospital, Shanghai Jiaotong University School of Medicine.
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Affiliation(s)
- Yuehuan Zheng
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Nannan Wang
- Department of Nursing, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Zhe Chen
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Liqiang Shi
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Xiangyang Xu
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
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Sun HZ, Li CY, Shi Y, Li JJ, Wang YY, Han LN, Zhu LJ, Zhang YF. Effect of exogenous hydrogen sulfide in the nucleus tractus solitarius on gastric motility in rats. World J Gastroenterol 2023; 29:4557-4570. [PMID: 37621756 PMCID: PMC10445002 DOI: 10.3748/wjg.v29.i29.4557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/29/2023] [Accepted: 07/19/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND Hydrogen sulfide (H2S) is a recently discovered gaseous neurotransmitter in the nervous and gastrointestinal systems. It exerts its effects through multiple signaling pathways, impacting various physiological activities. The nucleus tractus solitarius (NTS), a vital nucleus involved in visceral sensation, was investigated in this study to understand the role of H2S in regulating gastric function in rats. AIM To examine whether H2S affects the nuclear factor kappa-B (NF-κB) and transient receptor potential vanilloid 1 pathways and the neurokinin 1 (NK1) receptor in the NTS. METHODS Immunohistochemical and fluorescent double-labeling techniques were employed to identify cystathionine beta-synthase (CBS) and c-Fos co-expressed positive neurons in the NTS during rat stress. Gastric motility curves were recorded by inserting a pressure-sensing balloon into the pylorus through the stomach fundus. Changes in gastric motility were observed before and after injecting different doses of NaHS (4 nmol and 8 nmol), physiological saline, Capsazepine (4 nmol) + NaHS (4 nmol), pyrrolidine dithiocarbamate (PDTC, 4 nmol) + NaHS (4 nmol), and L703606 (4 nmol) + NaHS (4 nmol). RESULTS We identified a significant increase in the co-expression of c-Fos and CBS positive neurons in the NTS after 1 h and 3 h of restraint water-immersion stress compared to the expressions observed in the control group. Intra-NTS injection of NaHS at different doses significantly inhibited gastric motility in rats (P < 0.01). However, injection of saline, first injection NF-κB inhibitor PDTC or transient receptor potential vanilloid 1 (TRPV1) antagonist Capsazepine or NK1 receptor blockers L703606 and then injection NaHS did not produce significant changes (P > 0.05). CONCLUSION NTS contains neurons co-expressing CBS and c-Fos, and the injection of NaHS into the NTS can suppress gastric motility in rats. This effect may be mediated by activating TRPV1 and NK1 receptors via the NF-κB channel.
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Affiliation(s)
- Hong-Zhao Sun
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Chen-Yu Li
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Yuan Shi
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Jin-Jin Li
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Yi-Ya Wang
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Li-Na Han
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Lu-Jie Zhu
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
| | - Ya-Fei Zhang
- College of Life Science, Qi Lu Normal University, Zhangqiu 250200, Shandong Province, China
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Pang H, Chen S, Klyne DM, Harrich D, Ding W, Yang S, Han FY. Low back pain and osteoarthritis pain: a perspective of estrogen. Bone Res 2023; 11:42. [PMID: 37542028 PMCID: PMC10403578 DOI: 10.1038/s41413-023-00280-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 06/28/2023] [Accepted: 07/10/2023] [Indexed: 08/06/2023] Open
Abstract
Low back pain (LBP) is the world's leading cause of disability and is increasing in prevalence more rapidly than any other pain condition. Intervertebral disc (IVD) degeneration and facet joint osteoarthritis (FJOA) are two common causes of LBP, and both occur more frequently in elderly women than in other populations. Moreover, osteoarthritis (OA) and OA pain, regardless of the joint, are experienced by up to twice as many women as men, and this difference is amplified during menopause. Changes in estrogen may be an important contributor to these pain states. Receptors for estrogen have been found within IVD tissue and nearby joints, highlighting the potential roles of estrogen within and surrounding the IVDs and joints. In addition, estrogen supplementation has been shown to be effective at ameliorating IVD degeneration and OA progression, indicating its potential use as a therapeutic agent for people with LBP and OA pain. This review comprehensively examines the relationship between estrogen and these pain conditions by summarizing recent preclinical and clinical findings. The potential molecular mechanisms by which estrogen may relieve LBP associated with IVD degeneration and FJOA and OA pain are discussed.
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Affiliation(s)
- Huiwen Pang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - Shihui Chen
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - David M Klyne
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - David Harrich
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, 4006, Australia
| | - Wenyuan Ding
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, China
- Hebei Joint International Research Center for Spinal Diseases, 139 Ziqiang Road, Shijiazhuang, 050051, China
| | - Sidong Yang
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, China.
- Hebei Joint International Research Center for Spinal Diseases, 139 Ziqiang Road, Shijiazhuang, 050051, China.
| | - Felicity Y Han
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia.
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Alorfi NM. Pharmacological Methods of Pain Management: Narrative Review of Medication Used. Int J Gen Med 2023; 16:3247-3256. [PMID: 37546242 PMCID: PMC10402723 DOI: 10.2147/ijgm.s419239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/02/2023] [Indexed: 08/08/2023] Open
Abstract
Background Pain management is a critical aspect of healthcare, aimed at alleviating discomfort and improving the quality of life for individuals experiencing acute or chronic pain. Pharmacological methods constitute a primary approach to pain management, including a diverse array of drugs that work through different mechanisms. Aim Identifying medications commonly employed in pain management, focusing on their mechanism of actions, uses, efficacy and pharmacological applications. Methods The methodology involved a systematic search of scientific literature using various databases, including PubMed, Scopus, and Google Scholar. Relevant articles published between 2000 and 2023 were screened for inclusion. The selected studies encompassed original research, review articles, therapeutic guidelines and randomized controlled trials. Results The findings of this review suggest that a multimodal approach combining various analgesics can enhance pain relief while minimizing adverse effects. It emphasizes the importance of assessing pain intensity, determining the underlying etiology, and utilizing evidence-based guidelines to optimize pain management outcomes. Conclusion Pharmacological methods of pain management are an essential component of pain management strategies to achieve optimal pain relief while minimizing adverse effects. The article concludes with a discussion on emerging trends and future directions in pharmacological pain management, including novel drug targets and advances in drug delivery systems.
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Affiliation(s)
- Nasser M Alorfi
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
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Menon N, Kishen A. Nociceptor-Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain. Biomolecules 2023; 13:1193. [PMID: 37627258 PMCID: PMC10452348 DOI: 10.3390/biom13081193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Periradicular tissues have a rich supply of peripheral afferent neurons, also known as nociceptive neurons, originating from the trigeminal nerve. While their primary function is to relay pain signals to the brain, these are known to be involved in modulating innate and adaptive immunity by initiating neurogenic inflammation (NI). Studies have investigated neuroanatomy and measured the levels of biomolecules such as cytokines and neuropeptides in human saliva, gingival crevicular fluid, or blood/serum samples in apical periodontitis (AP) to validate the possible role of trigeminal nociceptors in inflammation and tissue regeneration. However, the contributions of nociceptors and the mechanisms involved in the neuro-immune interactions in AP are not fully understood. This narrative review addresses the complex biomolecular interactions of trigeminal nociceptors with macrophages, the effector cells of the innate immune system, in the clinical manifestations of AP.
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Affiliation(s)
| | - Anil Kishen
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada;
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Wu L, Wu Y, Liu J, Jiang J, Zhou C, Zhang D. Sodium Leak Channel in Glutamatergic Neurons of the Lateral Parabrachial Nucleus Modulates Inflammatory Pain in Mice. Int J Mol Sci 2023; 24:11907. [PMID: 37569281 PMCID: PMC10418977 DOI: 10.3390/ijms241511907] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/18/2023] [Accepted: 07/22/2023] [Indexed: 08/13/2023] Open
Abstract
Elevated excitability of glutamatergic neurons in the lateral parabrachial nucleus (PBL) is associated with the pathogenesis of inflammatory pain, but the underlying molecular mechanisms are not fully understood. Sodium leak channel (NALCN) is widely expressed in the central nervous system and regulates neuronal excitability. In this study, chemogenetic manipulation was used to explore the association between the activity of PBL glutamatergic neurons and pain thresholds. Complete Freund's adjuvant (CFA) was used to construct an inflammatory pain model in mice. Pain behaviour was tested using von Frey filaments and Hargreaves tests. Local field potential (LFP) was used to record the activity of PBL glutamatergic neurons. Gene knockdown techniques were used to investigate the role of NALCN in inflammatory pain. We further explored the downstream projections of PBL using cis-trans-synaptic tracer virus. The results showed that chemogenetic inhibition of PBL glutamatergic neurons increased pain thresholds in mice, whereas chemogenetic activation produced the opposite results. CFA plantar modelling increased the number of C-Fos protein and NALCN expression in PBL glutamatergic neurons. Knockdown of NALCN in PBL glutamatergic neurons alleviated CFA-induced pain. CFA injection induced C-Fos protein expression in central nucleus amygdala (CeA) neurons, which was suppressed by NALCN knockdown in PBL glutamatergic neurons. Therefore, elevated expression of NALCN in PBL glutamatergic neurons contributes to the development of inflammatory pain via PBL-CeA projections.
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Affiliation(s)
- Lin Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yujie Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jingyao Jiang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Zhou
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Donghang Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.W.); (Y.W.); (J.L.); (J.J.)
- Laboratory of Anaesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Díaz-Mohedo E, González-Roldán G, Muñoz-Gámez I, Padilla-Romero V, Castro-Martín E, Cabrera-Martos I, Sánchez-García C. Implicit Motor Imagery for Chronic Pelvic Pain: A Cross-Sectional Case-Control Study. J Clin Med 2023; 12:4738. [PMID: 37510853 PMCID: PMC10380828 DOI: 10.3390/jcm12144738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/27/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Implicit motor imagery (IMI), with an image laterality discrimination (LD) task, has been proposed as a useful therapeutic tool to restore body schema in patients with chronic pelvic pain (CPP). The aim of this study was to analyse the existence of differences between patients with CPP and healthy individuals in order to justify the use of IMI. An observational, cross-sectional study with non-probabilistic sampling was designed as a one-to-one matched case-control study. Through a web link designed for this purpose, a total of 40 abdominoperineal images were shown to 130 participants during the laterality task. Outcome measures were pain intensity (visual analogue scale, VAS), accuracy, response time (RT), and CPPQ-Mohedo score (Chronic Pelvic Pain Questionnaire-Mohedo). This was an observational, cross-sectional study with a total of 64 CPP patients and 66 healthy individuals. The comparative analysis between groups revealed significant differences in accuracy, CPPQ-Mohedo and VAS (p < 0.001), but not in RT; in patients with CPP, accuracy was correlated with a lower CPPQ-Mohedo score and RT and, the greater the pain intensity, the higher the CPPQ-Mohedo score and RT, and the lower the accuracy. In the LD task, the patients with CPP made more mistakes than the healthy individuals. IMI could be a useful and complementary tool in the therapeutic approach for patients with CPP.
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Affiliation(s)
- Esther Díaz-Mohedo
- Department of Physiotherapy, Faculty of Health Sciences, University of Malaga, Avda. Arquitecto Francisco Peñalosa, s/n, 29071 Málaga, Spain
| | | | | | | | - Eduardo Castro-Martín
- Department of Physiotherapy, Faculty of Health Sciences, University of Granada, 18016 Granada, Spain
| | - Irene Cabrera-Martos
- Department of Physiotherapy, Faculty of Health Sciences, University of Granada, 18016 Granada, Spain
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Kouroupis D, Kaplan LD, Huard J, Best TM. CD10-Bound Human Mesenchymal Stem/Stromal Cell-Derived Small Extracellular Vesicles Possess Immunomodulatory Cargo and Maintain Cartilage Homeostasis under Inflammatory Conditions. Cells 2023; 12:1824. [PMID: 37508489 PMCID: PMC10377825 DOI: 10.3390/cells12141824] [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: 05/11/2023] [Revised: 06/23/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
The onset and progression of human inflammatory joint diseases are strongly associated with the activation of resident synovium/infrapatellar fat pad (IFP) pro-inflammatory and pain-transmitting signaling. We recently reported that intra-articularly injected IFP-derived mesenchymal stem/stromal cells (IFP-MSC) acquire a potent immunomodulatory phenotype and actively degrade substance P (SP) via neutral endopeptidase CD10 (neprilysin). Our hypothesis is that IFP-MSC robust immunomodulatory therapeutic effects are largely exerted via their CD10-bound small extracellular vesicles (IFP-MSC sEVs) by attenuating synoviocyte pro-inflammatory activation and articular cartilage degradation. Herein, IFP-MSC sEVs were isolated from CD10High- and CD10Low-expressing IFP-MSC cultures and their sEV miRNA cargo was assessed using multiplex methods. Functionally, we interrogated the effect of CD10High and CD10Low sEVs on stimulated by inflammatory/fibrotic cues synoviocyte monocultures and cocultures with IFP-MSC-derived chondropellets. Finally, CD10High sEVs were tested in vivo for their therapeutic capacity in an animal model of acute synovitis/fat pad fibrosis. Our results showed that CD10High and CD10Low sEVs possess distinct miRNA profiles. Reactome analysis of miRNAs highly present in sEVs showed their involvement in the regulation of six gene groups, particularly those involving the immune system. Stimulated synoviocytes exposed to IFP-MSC sEVs demonstrated significantly reduced proliferation and altered inflammation-related molecular profiles compared to control stimulated synoviocytes. Importantly, CD10High sEV treatment of stimulated chondropellets/synoviocyte cocultures indicated significant chondroprotective effects. Therapeutically, CD10High sEV treatment resulted in robust chondroprotective effects by retaining articular cartilage structure/composition and PRG4 (lubricin)-expressing cartilage cells in the animal model of acute synovitis/IFP fibrosis. Our study suggests that CD10High sEVs possess immunomodulatory miRNA attributes with strong chondroprotective/anabolic effects for articular cartilage in vivo. The results could serve as a foundation for sEV-based therapeutics for the resolution of detrimental aspects of immune-mediated inflammatory joint changes associated with conditions such as osteoarthritis (OA).
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Affiliation(s)
- Dimitrios Kouroupis
- Department of Orthopaedics, UHealth Sports Medicine Institute, University of Miami Miller School of Medicine, Miami, FL 33146, USA
- Diabetes Research Institute & Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Lee D Kaplan
- Department of Orthopaedics, UHealth Sports Medicine Institute, University of Miami Miller School of Medicine, Miami, FL 33146, USA
| | - Johnny Huard
- Linda and Mitch Hart Center for Regenerative and Personalized Medicine, Steadman Philippon Research Institute, Vail, CO 81657, USA
| | - Thomas M Best
- Department of Orthopaedics, UHealth Sports Medicine Institute, University of Miami Miller School of Medicine, Miami, FL 33146, USA
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Zhang XW, Li JY, Li L, Hu WQ, Tao Y, Gao WY, Ye ZN, Jia HY, Wang JN, Miao XK, Yang WL, Wang R, Mou LY. Neurokinin-1 receptor drives PKCɑ-AURKA/N-Myc signaling to facilitate the neuroendocrine progression of prostate cancer. Cell Death Dis 2023; 14:384. [PMID: 37385990 PMCID: PMC10310825 DOI: 10.1038/s41419-023-05894-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 06/08/2023] [Accepted: 06/15/2023] [Indexed: 07/01/2023]
Abstract
The widespread application of antiandrogen therapies has aroused a significant increase in the incidence of NEPC, a lethal form of the disease lacking efficient clinical treatments. Here we identified a cell surface receptor neurokinin-1 (NK1R) as a clinically relevant driver of treatment-related NEPC (tNEPC). NK1R expression increased in prostate cancer patients, particularly higher in metastatic prostate cancer and treatment-related NEPC, implying a relation with the progression from primary luminal adenocarcinoma toward NEPC. High NK1R level was clinically correlated with accelerated tumor recurrence and poor survival. Mechanical studies identified a regulatory element in the NK1R gene transcription ending region that was recognized by AR. AR inhibition enhanced the expression of NK1R, which mediated the PKCα-AURKA/N-Myc pathway in prostate cancer cells. Functional assays demonstrated that activation of NK1R promoted the NE transdifferentiation, cell proliferation, invasion, and enzalutamide resistance in prostate cancer cells. Targeting NK1R abrogated the NE transdifferentiation process and tumorigenicity in vitro and in vivo. These findings collectively characterized the role of NK1R in tNEPC progression and suggested NK1R as a potential therapeutic target.
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Affiliation(s)
- Xiao-Wei Zhang
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Jing-Yi Li
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Departemnt of Biochemistry and Molecular Biology, School of basic medical sciences, Fujian Medical University, 1 Xuefu North Road, Fuzhou, 350122, P. R. China
| | - Lin Li
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wen-Qian Hu
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yan Tao
- Key Laboratory of Urological Disease of Gansu Province, Lanzhou University Second Hospital, Lanzhou University, Lanzhou, 730000, China
| | - Wen-Yan Gao
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Zi-Nuo Ye
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hao-Yuan Jia
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Jia-Nan Wang
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiao-Kang Miao
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wen-Le Yang
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Rui Wang
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China.
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Ling-Yun Mou
- School of Life Science Lanzhou University, 222 TianShui South Road, Lanzhou, 730000, P. R. China.
- Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, 730000, China.
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, P. R. China.
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Raghuraman R, Navakkode S, Sajikumar S. Alteration of hippocampal CA2 plasticity and social memory in adult rats impacted by juvenile stress. Hippocampus 2023; 33:745-758. [PMID: 36965045 PMCID: PMC10946601 DOI: 10.1002/hipo.23531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 03/27/2023]
Abstract
The hippocampal CA2 region has received greater attention in recent years due to its fundamental role in social memory and hippocampus-dependent memory processing. Unlike entorhinal cortical inputs, the Schaffer collateral inputs to CA2 do not support activity-dependent long-term potentiation (LTP), which serves as the basis for long-term memories. This LTP-resistant zone also expresses genes that restrict plasticity. With the aim of exploring social interaction and sociability in rats that were subjected to juvenile stress, we addressed questions about how the neural circuitry is altered and its effects on social behavior. Although there was induction of LTP in both Schaffer collateral and entorhinal cortical pathways in juvenile-stressed rats, LTP declined in both pathways after 2-3 h. Moreover, exogenous bath application of substance P, a neuropeptide that resulted in slow onset long-lasting potentiation in control animals while it failed to induce LTP in juvenile-stressed rats. Our study reveals that juvenile-stressed rats show behavioral and cellular abnormalities with a long-lasting impact in adulthood.
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Affiliation(s)
- Radha Raghuraman
- Department of PhysiologyNational University of SingaporeSingapore117593Singapore
- Life Sciences Institute Neurobiology ProgrammeCentre for Life Sciences, National University of SingaporeSingapore117456Singapore
- Present address:
Taub Institute for Research on Alzheimer's Disease and the Aging BrainColumbia University Irving Medical CenterNew YorkNew York10032USA
| | - Sheeja Navakkode
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore308232Singapore
| | - Sreedharan Sajikumar
- Department of PhysiologyNational University of SingaporeSingapore117593Singapore
- Life Sciences Institute Neurobiology ProgrammeCentre for Life Sciences, National University of SingaporeSingapore117456Singapore
- Healthy Longevity Translational Research ProgrammeYong Loo Lin School of Medicine, National University of SingaporeSingapore117456Singapore
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Cao X, Yang Y, Zhou W, Wang Y, Wang X, Ge X, Wang F, Zhou F, Deng X, Miao L. Aprepitant inhibits the development and metastasis of gallbladder cancer via ROS and MAPK activation. BMC Cancer 2023; 23:471. [PMID: 37221457 DOI: 10.1186/s12885-023-10954-8] [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: 01/20/2023] [Accepted: 05/12/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Aprepitant, as a neurokinin-1 receptor (NK-1R) antagonist, originally applied for curing chemotherapy-induced nausea and vomiting, has been reported to have significant antitumor effect on several malignant tumors. However, the effect of aprepitant on gallbladder cancer (GBC) is not clear yet. This study aimed to investigate the anti-tumor activity of aprepitant on GBC and the potential mechanisms. METHODS The NK-1R expression of gallbladder cancer cells were examined by immunofluorescence. MTT assay, wound healing and transwell migration assay were applied to detect the effect of aprepitant on cell proliferation, migration and invasion. Flow cytometry was used to detect the apoptosis rate. The effects of aprepitant on the expressions of cytokine were examined by real-time quantitative PCR and MAPK activation were detected via immunofluorescence and western blotting. Besides, xenograft model was established to investigate the effect of aprepitant in vivo. RESULTS Our results indicated that NK-1R was markedly expressed in gallbladder cancer cells and aprepitant effectively inhibited the proliferation, migration and invasion. Furthermore, the apoptosis, ROS and inflammation response were significantly boosted by aprepitant in GBC. Aprepitant induced NF-κB p65 nuclear translocationin and increased the expressions of p-P65, p-Akt, p-JNK, p-ERK and p-P38, as well as the mRNA levels of inflammatory cytokines IL-1β, IL-6 and TNF-α. Consistently, aprepitant suppressed the growth of GBC in xenograft mice model. CONCLUSION Our study demonstrated that aprepitant could inhibit the development of gallbladder cancer via inducing ROS and MAPK activation, which suggested that aprepitant may become a promising therapeutic drug against GBC.
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Affiliation(s)
- Xueyan Cao
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Yang Yang
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Wei Zhou
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yue Wang
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Xue Wang
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Xianxiu Ge
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Fei Wang
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China
| | - Fangfang Zhou
- Burn and Plastic Surgery, Jiangsu University Affiliated Hospital, Zhenjiang, China
| | - Xueting Deng
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China.
| | - Lin Miao
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China.
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Zheng G, Harms AK, Tail M, Zhang H, Nimmo A, Skutella T, Kiening K, Unterberg A, Zweckberger K, Younsi A. Effects of a neurokinin-1 receptor antagonist in the acute phase after thoracic spinal cord injury in a rat model. Front Mol Neurosci 2023; 16:1128545. [PMID: 37251648 PMCID: PMC10213275 DOI: 10.3389/fnmol.2023.1128545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/17/2023] [Indexed: 05/31/2023] Open
Abstract
Objective Disruption of the blood-spinal cord barrier (BSCB) with subsequent edema formation and further neuroinflammation contributes to aggravation of spinal cord injury (SCI). We aimed to observe the effect of antagonizing the binding of the neuropeptide Substance-P (SP) to its neurokinin-1 (NK1) receptor in a rodent SCI model. Methods Female Wistar rats were subjected to a T9 laminectomy with or without (Sham) a T9 clip-contusion/compression SCI, followed by the implantation of an osmotic pump for the continuous, seven-day-long infusion of a NK1 receptor antagonist (NRA) or saline (vehicle) into the intrathecal space. The animals were assessed via MRI, and behavioral tests were performed during the experiment. 7 days after SCI, wet & dry weight and immunohistological analyses were conducted. Results Substance-P inhibition via NRA showed limited effects on reducing edema. However, the invasion of T-lymphocytes and the number of apoptotic cells were significantly reduced with the NRA treatment. Moreover, a trend of reduced fibrinogen leakage, endothelial and microglial activation, CS-GAG deposition, and astrogliosis was found. Nevertheless, only insignificant general locomotion recovery could be observed in the BBB open field score and the Gridwalk test. In contrast, the CatWalk gait analysis showed an early onset of recovery in several parameters. Conclusion Intrathecal administration of NRA might reinforce the integrity of the BSCB in the acute phase after SCI, potentially attenuating aspects of neurogenic inflammation, reducing edema formation, and improving functional recovery.
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Affiliation(s)
- Guoli Zheng
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Anna-Kathrin Harms
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Mohamed Tail
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Hao Zhang
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Alan Nimmo
- College of Medicine and Dentistry, James Cook University, Cairns, QLD, Australia
| | - Thomas Skutella
- Department of Neuroanatomy, Institute for Anatomy and Cell Biology, University of Heidelberg, Heidelberg, Germany
| | - Karl Kiening
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Andreas Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Klaus Zweckberger
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexander Younsi
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
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Kim SJ, Kim JE, Choe G, Song DH, Kim SJ, Kim TH, Yoo J, Kim SH, Jung Y. Self-assembled peptide-substance P hydrogels alleviate inflammation and ameliorate the cartilage regeneration in knee osteoarthritis. Biomater Res 2023; 27:40. [PMID: 37143133 PMCID: PMC10161637 DOI: 10.1186/s40824-023-00387-6] [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: 02/27/2023] [Accepted: 04/26/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND Self-assembled peptide (SAP)-substance P (SP) hydrogels can be retained in the joint cavity longer than SP alone, and they can alleviate inflammation and ameliorate cartilage regeneration in knee osteoarthritis (OA). We conducted a preclinical study using diverse animal models of OA and an in vitro study using human synoviocytes and patient-derived synovial fluids to demonstrate the effect of SAP-SP complex on the inflammation and cartilage regeneration. METHODS Surgical induction OA model was prepared with New Zealand white female rabbits and chemical induction, and naturally occurring OA models were prepared using Dunkin Hartely female guinea pigs. The SAP-SP complex or control (SAP, SP, or saline) was injected into the joint cavities in each model. We performed micro-computed tomography (Micro-CT) analysis, histological evaluation, immunofluorescent analysis, and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick-end labeling (TUNEL) assay and analyzed the recruitment of intrinsic mesenchymal stem cells (MSCs), macrophage activity, and inflammatory cytokine in each OA model. Human synoviocytes were cultured in synovial fluid extracted from human OA knee joints injected with SAP-SP complexes or other controls. Proliferative capacity and inflammatory cytokine levels were analyzed. RESULTS Alleviation of inflammation, inhibition of apoptosis, and enhancement of intrinsic MSCs have been established in the SAP-SP group in diverse animal models. Furthermore, the inflammatory effects on human samples were examined in synoviocytes and synovial fluid from patients with OA. In this study, we observed that SAP-SP showed anti-inflammatory action in OA conditions and increased cartilage regeneration by recruiting intrinsic MSCs, inhibiting progression of OA. CONCLUSIONS These therapeutic effects have been validated in diverse OA models, including rabbits, Dunkin Hartley guinea pigs, and human synoviocytes. Therefore, we propose that SAP-SP may be an effective injectable therapeutic agent for treating OA. In this manuscript, we report a preclinical study of novel self-assembled peptide (SAP)-substance P (SP) hydrogels with diverse animal models and human synoviocytes and it displays anti-inflammatory effects, apoptosis inhibition, intrinsic mesenchymal stem cells recruitments and cartilage regeneration.
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Affiliation(s)
- Sang Jun Kim
- Department of Physical and Rehabilitation Medicine, Seoul Jun Rehabilitation Clinic and Research Center, Seoul, Republic of Korea
- Stem Cell & Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Ji Eun Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea
| | - Goeun Choe
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Da Hyun Song
- Department of Physical and Rehabilitation Medicine, Seoul Jun Rehabilitation Clinic and Research Center, Seoul, Republic of Korea
| | - Sun Jeong Kim
- Stem Cell Institute, ENCell Co. Ltd, Seoul, Republic of Korea
- Cell and Gene Therapy Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Tae Hee Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jin Yoo
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Soo Hyun Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea
| | - Youngmee Jung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
- School of Electrical and Electronic Engineering, YU-KIST Institute, Yonsei University, Seoul, Republic of Korea.
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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: 0] [Impact Index Per Article: 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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Zhu Z, Bhatia M. Inflammation and Organ Injury the Role of Substance P and Its Receptors. Int J Mol Sci 2023; 24:ijms24076140. [PMID: 37047113 PMCID: PMC10094202 DOI: 10.3390/ijms24076140] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 04/14/2023] Open
Abstract
Tightly controlled inflammation is an indispensable mechanism in the maintenance of cellular and organismal homeostasis in living organisms. However, aberrant inflammation is detrimental and has been suggested as a key contributor to organ injury with different etiologies. Substance P (SP) is a neuropeptide with a robust effect on inflammation. The proinflammatory effects of SP are achieved by activating its functional receptors, namely the neurokinin 1 receptor (NK1R) receptor and mas-related G protein-coupled receptors X member 2 (MRGPRX2) and its murine homolog MRGPRB2. Upon activation, the receptors further signal to several cellular signaling pathways involved in the onset, development, and progression of inflammation. Therefore, excessive SP-NK1R or SP-MRGPRX2/B2 signals have been implicated in the pathogenesis of inflammation-associated organ injury. In this review, we summarize our current knowledge of SP and its receptors and the emerging roles of the SP-NK1R system and the SP-MRGPRX2/B2 system in inflammation and injury in multiple organs resulting from different pathologies. We also briefly discuss the prospect of developing a therapeutic strategy for inflammatory organ injury by disrupting the proinflammatory actions of SP via pharmacological intervention.
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Affiliation(s)
- Zhixing Zhu
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
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45
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Boivin JC, Zhu J, Ohyama T. Nociception in fruit fly larvae. FRONTIERS IN PAIN RESEARCH 2023; 4:1076017. [PMID: 37006412 PMCID: PMC10063880 DOI: 10.3389/fpain.2023.1076017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 02/28/2023] [Indexed: 03/19/2023] Open
Abstract
Nociception, the process of encoding and processing noxious or painful stimuli, allows animals to detect and avoid or escape from potentially life-threatening stimuli. Here, we provide a brief overview of recent technical developments and studies that have advanced our understanding of the Drosophila larval nociceptive circuit and demonstrated its potential as a model system to elucidate the mechanistic basis of nociception. The nervous system of a Drosophila larva contains roughly 15,000 neurons, which allows for reconstructing the connectivity among them directly by transmission electron microscopy. In addition, the availability of genetic tools for manipulating the activity of individual neurons and recent advances in computational and high-throughput behavior analysis methods have facilitated the identification of a neural circuit underlying a characteristic nocifensive behavior. We also discuss how neuromodulators may play a key role in modulating the nociceptive circuit and behavioral output. A detailed understanding of the structure and function of Drosophila larval nociceptive neural circuit could provide insights into the organization and operation of pain circuits in mammals and generate new knowledge to advance the development of treatment options for pain in humans.
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Affiliation(s)
- Jean-Christophe Boivin
- Department of Biology, McGill University, Montreal, QC, Canada
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada
| | - Jiayi Zhu
- Department of Biology, McGill University, Montreal, QC, Canada
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada
| | - Tomoko Ohyama
- Department of Biology, McGill University, Montreal, QC, Canada
- Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
- Correspondence: Tomoko Ohyama
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46
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Lauritano D, Mastrangelo F, D’Ovidio C, Ronconi G, Caraffa A, Gallenga CE, Frydas I, Kritas SK, Trimarchi M, Carinci F, Conti P. Activation of Mast Cells by Neuropeptides: The Role of Pro-Inflammatory and Anti-Inflammatory Cytokines. Int J Mol Sci 2023; 24:ijms24054811. [PMID: 36902240 PMCID: PMC10002992 DOI: 10.3390/ijms24054811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Mast cells (MCs) are tissue cells that are derived from bone marrow stem cells that contribute to allergic reactions, inflammatory diseases, innate and adaptive immunity, autoimmunity, and mental disorders. MCs located near the meninges communicate with microglia through the production of mediators such as histamine and tryptase, but also through the secretion of IL-1, IL-6 and TNF, which can create pathological effects in the brain. Preformed chemical mediators of inflammation and tumor necrosis factor (TNF) are rapidly released from the granules of MCs, the only immune cells capable of storing the cytokine TNF, although it can also be produced later through mRNA. The role of MCs in nervous system diseases has been extensively studied and reported in the scientific literature; it is of great clinical interest. However, many of the published articles concern studies on animals (mainly rats or mice) and not on humans. MCs are known to interact with neuropeptides that mediate endothelial cell activation, resulting in central nervous system (CNS) inflammatory disorders. In the brain, MCs interact with neurons causing neuronal excitation with the production of neuropeptides and the release of inflammatory mediators such as cytokines and chemokines. This article explores the current understanding of MC activation by neuropeptide substance P (SP), corticotropin-releasing hormone (CRH), and neurotensin, and the role of pro-inflammatory cytokines, suggesting a therapeutic effect of the anti-inflammatory cytokines IL-37 and IL-38.
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Affiliation(s)
- Dorina Lauritano
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Filiberto Mastrangelo
- Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, 71100 Foggia, Italy
| | - Cristian D’Ovidio
- Section of Legal Medicine, Department of Medicine and Aging Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Gianpaolo Ronconi
- Clinica dei Pazienti del Territorio, Fondazione Policlinico Gemelli, 00185 Rome, Italy
| | | | - Carla E. Gallenga
- Section of Ophthalmology, Department of Biomedical Sciences and Specialist Surgery, University of Ferrara, 44121 Ferrara, Italy
| | - Ilias Frydas
- Department of Parasitology, Aristotle University, 54124 Thessaloniki, Greece
| | - Spyros K. Kritas
- Department of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Macedonia, Greece
| | - Matteo Trimarchi
- Centre of Neuroscience of Milan, Department of Medicine and Surgery, University of Milan, 20122 Milano, Italy
| | - Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Pio Conti
- Immunology Division, Postgraduate Medical School, University of Chieti, 66100 Chieti, Italy
- Correspondence:
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47
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Hidese S, Yoshida F, Ishida I, Matsuo J, Hattori K, Kunugi H. Plasma neuropeptide levels in patients with schizophrenia, bipolar disorder, or major depressive disorder and healthy controls: A multiplex immunoassay study. Neuropsychopharmacol Rep 2023; 43:57-68. [PMID: 36414415 PMCID: PMC10009433 DOI: 10.1002/npr2.12304] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/27/2022] [Accepted: 11/10/2022] [Indexed: 11/24/2022] Open
Abstract
AIM We aimed to compare neuropeptide levels between patients with major psychiatric disorders and healthy controls and examine their association with symptoms and cognitive function. METHODS The participants were 149 patients with schizophrenia, 115 patients with bipolar disorder (BD), 186 unremitted patients with major depressive disorder (MDD), and 350 healthy controls. Psychiatric (schizophrenic, manic, and depressive) symptoms, sleep state, and cognitive (premorbid intelligence quotient, general cognitive, and memory) functions were evaluated. A multiplex immunoassay kit was used to measure cerebrospinal fluid (CSF) and plasma α-melanocyte-stimulating hormone (MSH), β-endorphin, neurotensin, oxytocin, and substance P levels. RESULTS The verification assay revealed that CSF α-MSH, β-endorphin, neurotensin, oxytocin, and substance P levels were too low to be reliably measured, while plasma α-MSH, β-endorphin, neurotensin, oxytocin, and substance P levels could be successfully measured. Plasma α-MSH, β-endorphin, neurotensin, oxytocin, and substance P levels were not significantly different between patients with schizophrenia, BD, or MDD and healthy controls. Plasma α-MSH, β-endorphin, neurotensin, oxytocin, and substance P levels were not significantly correlated with psychiatric symptom scores in patients with schizophrenia, BD, or MDD and cognitive function scores in patients or healthy controls. CONCLUSION Our data suggest that plasma neuropeptide levels do not elucidate the involvement of neuropeptides in the pathology of schizophrenia, BD, or MDD.
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Affiliation(s)
- Shinsuke Hidese
- Department of Psychiatry, Teikyo University School of Medicine, Itabashi-ku, Japan.,Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Fuyuko Yoshida
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Ikki Ishida
- Department of Psychiatry, Teikyo University School of Medicine, Itabashi-ku, Japan.,Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Junko Matsuo
- Department of Psychiatry, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Kotaro Hattori
- Medical Genome Center, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hiroshi Kunugi
- Department of Psychiatry, Teikyo University School of Medicine, Itabashi-ku, Japan.,Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
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48
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Di Maio G, Villano I, Ilardi CR, Messina A, Monda V, Iodice AC, Porro C, Panaro MA, Chieffi S, Messina G, Monda M, La Marra M. Mechanisms of Transmission and Processing of Pain: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3064. [PMID: 36833753 PMCID: PMC9964506 DOI: 10.3390/ijerph20043064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/27/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Knowledge about the mechanisms of transmission and the processing of nociceptive information, both in healthy and pathological states, has greatly expanded in recent years. This rapid progress is due to a multidisciplinary approach involving the simultaneous use of different branches of study, such as systems neurobiology, behavioral analysis, genetics, and cell and molecular techniques. This narrative review aims to clarify the mechanisms of transmission and the processing of pain while also taking into account the characteristics and properties of nociceptors and how the immune system influences pain perception. Moreover, several important aspects of this crucial theme of human life will be discussed. Nociceptor neurons and the immune system play a key role in pain and inflammation. The interactions between the immune system and nociceptors occur within peripheral sites of injury and the central nervous system. The modulation of nociceptor activity or chemical mediators may provide promising novel approaches to the treatment of pain and chronic inflammatory disease. The sensory nervous system is fundamental in the modulation of the host's protective response, and understanding its interactions is pivotal in the process of revealing new strategies for the treatment of pain.
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Affiliation(s)
- Girolamo Di Maio
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Ines Villano
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Ciro Rosario Ilardi
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Department of Psychology, University of Campania “Luigi Vanvitelli”, 81100 Caserta, Italy
| | - Antonietta Messina
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Vincenzo Monda
- Department of Movement Sciences and Wellbeing, University of Naples “Parthenope”, 80133 Naples, Italy
| | - Ashlei Clara Iodice
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Chiara Porro
- Department of Clinical and Experimental Medicine, University of Foggia, Viale Pinto, 71100 Foggia, Italy
| | - Maria Antonietta Panaro
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, 70125 Bari, Italy
| | - Sergio Chieffi
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Giovanni Messina
- Department of Clinical and Experimental Medicine, University of Foggia, Viale Pinto, 71100 Foggia, Italy
| | - Marcellino Monda
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Marco La Marra
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
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Cuitavi J, Torres-Pérez JV, Lorente JD, Campos-Jurado Y, Andrés-Herrera P, Polache A, Agustín-Pavón C, Hipólito L. Crosstalk between Mu-Opioid receptors and neuroinflammation: Consequences for drug addiction and pain. Neurosci Biobehav Rev 2023; 145:105011. [PMID: 36565942 DOI: 10.1016/j.neubiorev.2022.105011] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/29/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
Mu-Opioid Receptors (MORs) are well-known for participating in analgesia, sedation, drug addiction, and other physiological functions. Although MORs have been related to neuroinflammation their biological mechanism remains unclear. It is suggested that MORs work alongside Toll-Like Receptors to enhance the release of pro-inflammatory mediators and cytokines during pathological conditions. Some cytokines, including TNF-α, IL-1β and IL-6, have been postulated to regulate MORs levels by both avoiding MOR recycling and enhancing its production. In addition, Neurokinin-1 Receptor, also affected during neuroinflammation, could be regulating MOR trafficking. Therefore, inflammation in the central nervous system seems to be associated with altered/increased MORs expression, which might regulate harmful processes, such as drug addiction and pain. Here, we provide a critical evaluation on MORs' role during neuroinflammation and its implication for these conditions. Understanding MORs' functioning, their regulation and implications on drug addiction and pain may help elucidate their potential therapeutic use against these pathological conditions and associated disorders.
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Affiliation(s)
- Javier Cuitavi
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain.
| | - Jose Vicente Torres-Pérez
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Jesús David Lorente
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Yolanda Campos-Jurado
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Paula Andrés-Herrera
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Ana Polache
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Carmen Agustín-Pavón
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain
| | - Lucía Hipólito
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicent Andrés Estellés s/n., 46100 Burjassot, Spain.
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50
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Zhang WW, Chen T, Li SY, Wang XY, Liu WB, Wang YQ, Mi WL, Mao-Ying QL, Wang YQ, Chu YX. Tachykinin receptor 3 in the lateral habenula alleviates pain and anxiety comorbidity in mice. Front Immunol 2023; 14:1049739. [PMID: 36756128 PMCID: PMC9900122 DOI: 10.3389/fimmu.2023.1049739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
The coexistence of chronic pain and anxiety is a common clinical phenomenon. Here, the role of tachykinin receptor 3 (NK3R) in the lateral habenula (LHb) in trigeminal neuralgia and in pain-associated anxiety was systematically investigated. First, electrophysiological recording showed that bilateral LHb neurons are hyperactive in a mouse model of trigeminal neuralgia made by partial transection of the infraorbital nerve (pT-ION). Chemicogenetic activation of bilateral LHb glutamatergic neurons in naive mice induced orofacial allodynia and anxiety-like behaviors, and pharmacological activation of NK3R in the LHb attenuated allodynia and anxiety-like behaviors induced by pT-ION. Electrophysiological recording showed that pharmacological activation of NK3R suppressed the abnormal excitation of LHb neurons. In parallel, pharmacological inhibition of NK3R induced orofacial allodynia and anxiety-like behavior in naive mice. The electrophysiological recording showed that pharmacological inhibition of NK3R activates LHb neurons. Neurokinin B (NKB) is an endogenous high-affinity ligand of NK3R, which binds NK3R and activates it to perform physiological functions, and further neuron projection tracing showed that the front section of the periaqueductal gray (fPAG) projects NKB-positive nerve fibers to the LHb. Optogenetics combined with electrophysiology recordings characterize the functional connections in this fPAG NKB → LHb pathway. In addition, electrophysiological recording showed that NKB-positive neurons in the fPAG were more active than NKB-negative neurons in pT-ION mice. Finally, inhibition of NKB release from the fPAG reversed the analgesic and anxiolytic effects of LHb Tacr3 overexpression in pT-ION mice, indicating that fPAG NKB → LHb regulates orofacial allodynia and pain-induced anxious behaviors. These findings for NK3R suggest the cellular mechanism behind pT-ION in the LHb and suggest that the fPAG NKB → LHb circuit is involved in pain and anxiety comorbidity. This previously unrecognized pathway might provide a potential approach for relieving the pain and anxiety associated with trigeminal neuralgia by targeting NK3R.
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Affiliation(s)
- Wen-Wen Zhang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Teng Chen
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Shi-Yi Li
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xin-Yue Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Wen-Bo Liu
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Yu-Quan Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Wen-Li Mi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China,Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Institute of Acupuncture Research, Fudan University, Shanghai, China
| | - Qi-Liang Mao-Ying
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China,Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Institute of Acupuncture Research, Fudan University, Shanghai, China
| | - Yan-Qing Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China,Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Institute of Acupuncture Research, Fudan University, Shanghai, China,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, China,*Correspondence: Yu-Xia Chu, ; Yan-Qing Wang,
| | - Yu-Xia Chu
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Shanghai Medical College, Institutes of Integrative Medicine, Fudan University, Shanghai, China,Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Institute of Acupuncture Research, Fudan University, Shanghai, China,*Correspondence: Yu-Xia Chu, ; Yan-Qing Wang,
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