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Wen ZH, Wu ZS, Huang SY, Chou TL, Cheng HJ, Lo YH, Jean YH, Sung CS. Local Magnesium Sulfate Administration Ameliorates Nociception, Peripheral Inflammation, and Spinal Sensitization in a Rat Model of Incisional Pain. Neuroscience 2024; 547:98-107. [PMID: 38657727 DOI: 10.1016/j.neuroscience.2024.03.033] [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: 01/20/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVE Postoperative pain remains one of the most common complaints after surgery, and appropriate treatments are limited. METHODS We therefore investigated the effect of the anti-nociceptive properties of magnesium sulfate (MgSO4), an N-methyl-D-aspartate (NMDA) receptor antagonist, on incision-induced postoperative pain and peripheral and central nervous system inflammation. RESULTS We found that local MgSO4 administration dose-dependently increases paw withdrawal latency, indicating reduced peripheral postoperative pain. Furthermore, MgSO4 inhibited the expression of interleukin-1β (IL-1β) and inducible nitric oxide synthase (iNOS) and phosphorylation of the NMDA receptor NR1 subunit in injured paw tissue and significantly attenuated microglial and astrocytic activation in the ipsilateral lumbar spinal cord dorsal horn. CONCLUSION Locally administered MgSO4 has potential for development as an adjunctive therapy for preventing central nociceptive sensitization.
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Affiliation(s)
- Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan; Institute of Biopharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Zong-Sheng Wu
- Division of Pain Management, Department of Anesthesiology, Taipei Veterans General Hospital, Taipei 112201, Taiwan
| | - Shi-Ying Huang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Tung-Lin Chou
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Hao-Jung Cheng
- Institute of Biopharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Yi-Hao Lo
- Department of Family Medicine, Zouying Armed Forces General Hospital, Kaohsiung 813204, Taiwan; Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
| | - Yen-Hsuan Jean
- Department of Orthopedic Surgery, Pingtung Christian Hospital, No. 60 Dalian Road, Pingtung 900026, Taiwan
| | - Chun-Sung Sung
- Division of Pain Management, Department of Anesthesiology, Taipei Veterans General Hospital, Taipei 112201, Taiwan; School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112304, Taiwan.
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Iglesias N, Campbell MS, Dabaghi E, Prasai A, Ben-Aissa A, Ozhathil D, Jay J, Song J, Golovko G, Wolf S, El Ayadi A. Post-traumatic stress disorder in burn patients - A large database analysis. Burns 2024; 50:561-568. [PMID: 38233276 DOI: 10.1016/j.burns.2023.12.016] [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: 10/03/2022] [Revised: 12/21/2023] [Accepted: 12/30/2023] [Indexed: 01/19/2024]
Abstract
INTRODUCTION Post-traumatic stress disorder (PTSD) afflicts a significant portion of burn patients. This study aims to analyze the morbidity, prevalence, and treatment of PTSD in the burn population. METHODS Using the TriNetX database, we identified burned patients > 18 years of age without (A) or with (B) a PTSD diagnosis. Patients were then stratified by percent of total body surface area (TBSA) burned. Morbidity and mortality was analyzed in each cohort. Prevalence and pharmacologic treatments for PTSD were analyzed from 2002 to 2022. RESULTS PTSD incidence increased from 2.4% (n = 2281) in patients with < 10% to 3.1% (n = 542) in 10-30%, 7.4% (n = 285) in 30-59%, and 5.3% (n = 90) in > 60% TBSA burned. In patients with < 60% TBSA burned, PTSD diagnosis increased the risk of depression (p = <0.0003) and anxiety (p = <0.0001). In those with < 30% TBSA burned, PTSD diagnosis also increased risk of insomnia (p = <0.0001) and pruritus (p = 0.0211 for TBSA <10% and 0.0059 for TBSA 10-29%). PTSD diagnosis was associated with a decreased risk of mortality in patients with > 30% TBSA burned (p = 0.0179 for TBSA 30-59% and p = 0.0089 for TBSA >60%). From 2002 to 2022, the prevalence of PTSD in all burn patients was relatively stable between 2.2% and 3.2%. We found an increase in the use of serotonergic agents and prazosin for the treatment of PTSD during this timeframe. CONCLUSION PTSD is not uncommon in the burn population, and those with burns and concomitant PTSD have an increased risk of morbidity. Screening and preventative measures to reduce morbidity and early implementation of care in burned patients with PTSD are indicated.
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Affiliation(s)
- Nicholas Iglesias
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Matthew Steven Campbell
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Elissa Dabaghi
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Anesh Prasai
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Ameerah Ben-Aissa
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Deepak Ozhathil
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Jayson Jay
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Juquan Song
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - George Golovko
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Steven Wolf
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Amina El Ayadi
- Department of Surgery, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.
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Shan L, Xu K, Ji L, Zeng Q, Liu Y, Wu Y, Chen Y, Li Y, Hu Q, Wu J, Xu Y, Luo Y, Li C, Wu C, Jiang C, Wang Z. Injured sensory neurons-derived galectin-3 contributes to neuropathic pain via programming microglia in the spinal dorsal horn. Brain Behav Immun 2024; 117:80-99. [PMID: 38190982 DOI: 10.1016/j.bbi.2024.01.002] [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] [Received: 09/19/2023] [Revised: 12/11/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024] Open
Abstract
Emerging studies have demonstrated spinal microglia play a critical role in central sensitization and contribute to chronic pain. Although several mediators that contribute to microglia activation have been identified, the mechanism of microglia activation and its functionally diversified mechanisms in pathological pain are still unclear. Here we report that injured sensory neurons-derived Galectin-3 (Gal3) activates and reprograms microglia in the spinal dorsal horn (SDH) and contributes to neuropathic pain. Firstly, Gal3 is predominantly expressed in the isolectin B4 (IB4)-positive non-peptidergic sensory neurons and significantly up-regulated in dorsal root ganglion (DRG) neurons and primary afferent terminals in SDH in the partial sciatic nerve ligation (pSNL)-induced neuropathic pain model. Gal3 knockout (Gal3 KO) mice showed a significant decrease in mechanical allodynia and Gal3 inhibitor TD-139 produced a significant anti-allodynia effect in the pSNL model. Furthermore, pSNL-induced microgliosis was compromised in Gal3 KO mice. Additionally, intrathecal injection of Gal3 produces remarkable mechanical allodynia by direct activation of microglia, which have enhanced inflammatory responses with TNF-α and IL-1β up-regulation. Thirdly, using single-nuclear RNA sequencing (snRNA-seq), we identified that Gal3 targets microglia and induces reprogramming of microglia, which may contribute to neuropathic pain establishment. Finally, Gal3 enhances excitatory synaptic transmission in excitatory neurons in the SDH via microglia activation. Our findings reveal that injured sensory neurons-derived Gal3 programs microglia in the SDH and contribute to neuropathic pain.
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Affiliation(s)
- Leyan Shan
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Kangtai Xu
- Department of Anesthesiology, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Luyao Ji
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Qian Zeng
- Department of Anesthesiology, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; Department of Pain Medicine and Shenzhen Municipal Key Laboratory for Pain Medicine, The 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, Guangdong, China
| | - Yaqi Liu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yifei Wu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yiming Chen
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yitong Li
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Qiaodan Hu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jiawei Wu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yuanfan Xu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yuhui Luo
- Department of Pain Medicine and Shenzhen Municipal Key Laboratory for Pain Medicine, The 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, Guangdong, China
| | - Changlin Li
- Guangdong Institute of Intelligence Science and Technology, Hengqin, Zhuhai, Guangdong, China
| | - Chaoran Wu
- Department of Anesthesiology, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Changyu Jiang
- Department of Pain Medicine and Shenzhen Municipal Key Laboratory for Pain Medicine, The 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, Guangdong, China.
| | - Zilong Wang
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; Key University Laboratory of Metabolism and Health of Guangdong School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; SUSTech Center for Pain Medicine, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
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Mulder PPG, Hooijmans CR, Vlig M, Middelkoop E, Joosten I, Koenen HJPM, Boekema BKHL. Kinetics of Inflammatory Mediators in the Immune Response to Burn Injury: Systematic Review and Meta-Analysis of Animal Studies. J Invest Dermatol 2024; 144:669-696.e10. [PMID: 37806443 DOI: 10.1016/j.jid.2023.09.269] [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: 05/25/2023] [Revised: 08/31/2023] [Accepted: 09/20/2023] [Indexed: 10/10/2023]
Abstract
Burns are often accompanied by a dysfunctional immune response, which can lead to systemic inflammation, shock, and excessive scarring. The objective of this study was to provide insight into inflammatory pathways associated with burn-related complications. Because detailed information on the various inflammatory mediators is scattered over individual studies, we systematically reviewed animal experimental data for all reported inflammatory mediators. Meta-analyses of 352 studies revealed a strong increase in cytokines, chemokines, and growth factors, particularly 19 mediators in blood and 12 in burn tissue. Temporal kinetics showed long-lasting surges of proinflammatory cytokines in blood and burn tissue. Significant time-dependent effects were seen for IL-1β, IL-6, TGF-β1, and CCL2. The response of anti-inflammatory mediators was limited. Burn technique had a profound impact on systemic response levels. Large burn size and scalds further increased systemic, but not local inflammation. Animal characteristics greatly affected inflammation, for example, IL-1β, IL-6, and TNF-α levels were highest in young, male rats. Time-dependent effects and dissimilarities in response demonstrate the importance of appropriate study design. Collectively, this review presents a general overview of the burn-induced immune response exposing inflammatory pathways that could be targeted through immunotherapy for burn patients and provides guidance for experimental set-ups to advance burn research.
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Affiliation(s)
- Patrick P G Mulder
- Preclinical Research, Association of Dutch Burn Centres (ADBC), Beverwijk, The Netherlands; Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Carlijn R Hooijmans
- Meta-Research Team, Department of Anesthesiology, Pain and Palliative Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marcel Vlig
- Preclinical Research, Association of Dutch Burn Centres (ADBC), Beverwijk, The Netherlands
| | - Esther Middelkoop
- Preclinical Research, Association of Dutch Burn Centres (ADBC), Beverwijk, The Netherlands; Department of Plastic, Reconstructive and Hand Surgery, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Tissue Function and Regeneration, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Irma Joosten
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hans J P M Koenen
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bouke K H L Boekema
- Preclinical Research, Association of Dutch Burn Centres (ADBC), Beverwijk, The Netherlands; Department of Plastic, Reconstructive and Hand Surgery, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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5
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Elliott W, Tsung AJ, Guda MR, Velpula KK. Galectin inhibitors and nanoparticles as a novel therapeutic strategy for glioblastoma multiforme. Am J Cancer Res 2024; 14:774-795. [PMID: 38455415 PMCID: PMC10915327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/11/2024] [Indexed: 03/09/2024] Open
Abstract
Over the past two decades, the gold standard of glioblastoma multiforme (GBM) treatment is unchanged and adjunctive therapy has offered little to prolong both quality and quantity of life. To improve pharmacotherapy for GBM, galectins are being studied provided their positive correlation with the malignancy and disease severity. Despite the use of galectin inhibitors and literature displaying the ability of the lectin proteins to decrease tumor burden and decrease mortality within various malignancies, galectin inhibitors have not been studied for GBM therapy. Interestingly, anti-galectin siRNA delivered in nanoparticle capsules, assisting in blood brain barrier penetrance, is well studied for GBM, and has demonstrated a remarkable ability to attenuate both galectin and tumor count. Provided that the two therapies have an analogous anti-galectin effect, it is hypothesized that galectin inhibitors encapsuled within nanoparticles will likely have a similar anti-galectin effect in GBM cells and further correlate to a repressed tumor burden.
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Affiliation(s)
- Willie Elliott
- Department of Cancer Biology and Pharmacology, University of Illinois College of MedicinePeoria, IL, USA
| | - Andrew J Tsung
- Department of Cancer Biology and Pharmacology, University of Illinois College of MedicinePeoria, IL, USA
- Department of Neurosurgery, University of Illinois College of MedicinePeoria, IL, USA
- Illinois Neurological InstitutePeoria, IL, USA
| | - Maheedhara R Guda
- Department of Cancer Biology and Pharmacology, University of Illinois College of MedicinePeoria, IL, USA
| | - Kiran K Velpula
- Department of Cancer Biology and Pharmacology, University of Illinois College of MedicinePeoria, IL, USA
- Department of Neurosurgery, University of Illinois College of MedicinePeoria, IL, USA
- Department of Pediatrics, University of Illinois College of MedicinePeoria, IL, USA
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Gunawardena DA, Stanley E, Issler-Fisher AC. Understanding Neural Factors in Burn-related Pruritus and Neuropathic Pain. J Burn Care Res 2023; 44:1182-1188. [PMID: 36794899 DOI: 10.1093/jbcr/irad021] [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: 11/22/2022] [Indexed: 02/17/2023]
Abstract
Post-burn pruritus and neuropathic pain significantly affect the quality of life of affected individuals in several domains including psychosocial well-being, sleep and general impairment in activities of daily living. Whilst neural mediators involved in itch in the non-burns setting have been well investigated, there remains a lacuna of literature examining the pathophysiological and histological changes unique to burn-related pruritus and neuropathic pain. The aim of our study was to conduct a scoping review into the neural factors that contribute to burn-related pruritus and neuropathic pain. A scoping review was conducted to provide an overview of the available evidence. The PubMed, EMBASE and Medline databases were searched for publications. Data regarding neural mediators implicated, population demographics, total body surface area (TBSA) affected and sex was extracted. In total, 11 studies were included in this review with a total of 881 patients. The most frequently investigated neurotransmitter was the Substance P (SP) neuropeptide which appeared in 36% of studies (n = 4), followed by calcitonin gene-related peptide (CGRP) in 27% of studies (n = 3). Post-burn pruritus and neuropathic pain are symptomatic experiences that are predicated upon a heterogeneous group of underlying mechanisms. What is clear from the literature, however, is that itch and pain may occur secondary to the influence of both neuropeptides, such as SP, and other neural mediators including Transient receptor protein channels. Of the articles included for review, they were characterized by small sample sizes and large differences in statistical methodology and reporting.
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Affiliation(s)
- Dulan A Gunawardena
- Concord Clinical School, University of Sydney, New South Wales, Australia
- Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Edward Stanley
- Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Andrea C Issler-Fisher
- Concord Clinical School, University of Sydney, New South Wales, Australia
- Concord Repatriation General Hospital, Sydney, New South Wales, Australia
- ANZAC Research Institute, Concord, New South Wales, Australia
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Galectin-3, a rising star in modulating microglia activation under conditions of neurodegeneration. Cell Death Dis 2022; 13:628. [PMID: 35859075 PMCID: PMC9300700 DOI: 10.1038/s41419-022-05058-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 01/21/2023]
Abstract
The advent of high-throughput single-cell transcriptomic analysis of microglia has revealed different phenotypes that are inherently associated with disease conditions. A common feature of some of these activated phenotypes is the upregulation of galectin-3. Representative examples of these phenotypes include disease-associated microglia (DAM) and white-associated microglia (WAM), whose role(s) in neuroprotection/neurotoxicity is a matter of high interest in the microglia community. In this review, we summarise the main findings that demonstrate the ability of galectin-3 to interact with key pattern recognition receptors, including, among others, TLR4 and TREM2 and the importance of galectin-3 in the regulation of microglia activation. Finally, we discuss increasing evidence supporting the involvement of this lectin in the main neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, multiple sclerosis, traumatic brain injury, and stroke.
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8
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Mulder PPG, Koenen HJPM, Vlig M, Joosten I, de Vries RBM, Boekema BKHL. Burn-Induced Local and Systemic Immune Response: Systematic Review and Meta-Analysis of Animal Studies. J Invest Dermatol 2022; 142:3093-3109.e15. [PMID: 35623415 DOI: 10.1016/j.jid.2022.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/08/2022] [Accepted: 05/02/2022] [Indexed: 10/31/2022]
Abstract
As burn injuries are often followed by a derailed immune response and excessive inflammation, a thorough understanding of the occurring reactions is key to prevent secondary complications. This systematic review, that includes 247 animal studies, shows the post-burn response of 14 different immune cell types involved in immediate and long-term effects, in both wound tissue and circulation. Peripheral blood neutrophil and monocyte numbers increased directly after burns, whereas thrombocyte numbers increased near the end of the first week. Lymphocyte numbers, however, were decreased for at least two weeks. In burn wound tissue, neutrophil and macrophage numbers accumulated during the first three weeks. Burns also altered cellular functions as we found increased migratory potential of leukocytes, impaired antibacterial activity of neutrophils and enhanced inflammatory mediator production by macrophages. Neutrophil surges were positively associated with burn size and were highest in rats. Altogether, this comprehensive overview of the temporal immune cell dynamics shows that unlike normal wound healing, burn injury induces a long-lasting inflammatory response. It provides a fundamental research basis to improve experimental set-ups, burn care and outcome.
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Affiliation(s)
- Patrick P G Mulder
- Association of Dutch Burn Centres (ADBC), Preclinical Research, Beverwijk, the Netherlands; Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Hans J P M Koenen
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marcel Vlig
- Association of Dutch Burn Centres (ADBC), Preclinical Research, Beverwijk, the Netherlands
| | - Irma Joosten
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rob B M de Vries
- SYRCLE, Department for Health Evidence, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Bouke K H L Boekema
- Association of Dutch Burn Centres (ADBC), Preclinical Research, Beverwijk, the Netherlands
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El Shehaby DM, Mohammed MK, Ebrahem NE, Abd El-Azim MM, Sayed IG, Eweda SA. The emerging therapeutic role of some pharmacological antidotes in management of COVID-19. THE EGYPTIAN JOURNAL OF BRONCHOLOGY 2022. [PMCID: PMC8771180 DOI: 10.1186/s43168-021-00105-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background A novel RNA coronavirus was identified in January 2020 as the cause of a pneumonia epidemic affecting the city of Wuhan; it rapidly spread across China. Aim of the review The aim is to discuss the potential efficacy of some pharmacologically known pharmacological antidotes (N-acetylcysteine; hyperbaric oxygen; deferoxamine; low-dose naloxone) for the management of COVID-19-associated symptoms and complications. Method An extensive search was accomplished in Medline, Embase, Scopus, Web of Science, and Central databases until the end of April, 2021. Four independent researchers completed the screening, and finally, the associated studies were involved. Conclusion The current proof hinders the experts for suggesting the proper pharmacological lines of treatment of COVID-19. Organizations, for example, WHO, should pursue more practical actions and design well-planned clinical trials so that their results may be used in the treatment of future outbreaks.
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Wu PY, Menta B, Visk A, Ryals JM, Christianson JA, Wright DE, Chadwick AL. The impact of foot shock-induced stress on pain-related behavior associated with burn injury. Burns 2021; 47:1896-1907. [PMID: 33958242 PMCID: PMC8526636 DOI: 10.1016/j.burns.2021.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 04/05/2021] [Accepted: 04/12/2021] [Indexed: 11/21/2022]
Abstract
Acute pain is prevalent following burn injury and can often transition to chronic pain. Prolonged acute pain is an important risk factor for chronic pain and there is little preclinical research to address this problem. Using a mouse model of second-degree burn, we investigated whether pre-existing stress influences pain(sensitivity) after a burn injury. We introduced a contribution of stress in two different ways: (1) the use of foot-shock as a pre-injury stressor or (2) the use of A/J mice to represent higher pre-existing stress compared to C57Bl/6 mice. C57Bl/6 and A/J mice were exposed to repeated mild foot shock to induce stress for 10 continuous days and mice underwent either burn injury or sham burn injury of the plantar surface of the right hind paw. Assessments of mechanical and thermal sensitivities of the injured and uninjured paw were conducted during the shock protocol and at intervals up to 82-day post-burn injury. In both strains of mice that underwent burn injury, thermal hypersensitivity and mechanical allodynia appeared rapidly in the ipsilateral paw. Mice that were stressed took much longer to recover their hind paw mechanical thresholds to baseline compared to non-stressed mice in both burn and non-burn groups. Analysis of the two mouse strains revealed that the recovery of mechanical thresholds in A/J mice which display higher levels of baseline anxiety was shorter than C57Bl/6 mice. No differences were observed regarding thermal sensitivities between strains. Our results support the view that stress exposure prior to burn injury affects mechanical and thermal thresholds and may be relevant to as a risk factor for the transition from acute to chronic pain. Finally, genetic differences may play a key role in modality-specific recovery following burn injury.
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Affiliation(s)
- Pau Yen Wu
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Blaise Menta
- Department of Biochemistry, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Alexander Visk
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Janelle M Ryals
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Julie A Christianson
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Douglas E Wright
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| | - Andrea L Chadwick
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Lindenmann J, Smolle C, Kamolz LP, Smolle-Juettner FM, Graier WF. Survey of Molecular Mechanisms of Hyperbaric Oxygen in Tissue Repair. Int J Mol Sci 2021; 22:11754. [PMID: 34769182 PMCID: PMC8584249 DOI: 10.3390/ijms222111754] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 01/08/2023] Open
Abstract
For more than six decades, hyperbaric oxygen (HBO) has been used for a variety of indications involving tissue repair. These indications comprise a wide range of diseases ranging from intoxications to ischemia-reperfusion injury, crush syndrome, central nervous injury, radiation-induced tissue damage, burn injury and chronic wounds. In a systematic review, the molecular mechanisms triggered by HBO described within the last two decades were compiled. They cover a wide range of pathways, including transcription, cell-to-cell contacts, structure, adhesion and transmigration, vascular signaling and response to oxidative stress, apoptosis, autophagy and cell death, as well as inflammatory processes. By analyzing 71 predominantly experimental publications, we established an overview of the current concepts regarding the molecular mechanisms underlying the effects of HBO. We considered both the abovementioned pathways and their role in various applications and indications.
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Affiliation(s)
- Joerg Lindenmann
- Division of Thoracic and Hyperbaric Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/3, 8036 Graz, Austria;
| | - Christian Smolle
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/2, 8036 Graz, Austria; (C.S.); (L.-P.K.)
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/2, 8036 Graz, Austria; (C.S.); (L.-P.K.)
| | - Freyja Maria Smolle-Juettner
- Division of Thoracic and Hyperbaric Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/3, 8036 Graz, Austria;
| | - Wolfgang F. Graier
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria;
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Levels of Serum sST2, MMP-3, and Gal-3 in Patients with Essential Hypertension and Their Correlation with Left Ventricular Hypertrophy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:7262776. [PMID: 34675989 PMCID: PMC8526212 DOI: 10.1155/2021/7262776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 09/24/2021] [Indexed: 12/17/2022]
Abstract
Essential hypertension (EH) is a clinically frequent cardiovascular disease, with insidious onset, causing increased pressure load and neuroregulation disorders in patients. Long-term EH can cause left ventricular hypertrophy (LVH), which can lead to arrhythmia and even death. The soluble suppression of tumorigenicity 2 (sST2), matrix metalloproteinase-3 (MMP-3), and galectin-3 (Gal-3) in serum plays an important role in the occurrence, development, and prognosis of cardiovascular diseases. In our study, we divided EH patients into 3 levels and groups with or without LVH, according to their condition. The levels of sST2, MMP-3, and Gal-3 in the serum were measured in different groups of patients. Our results showed that the levels of sST2, MMP-3, and Gal-3 in the serum increased progressively with the level in different EH groups. The levels of sST2, MMP-3, and Gal-3 in the serum of the LVH group were higher than those of the NLVH group, and it is positively correlated with LVH-related indexes. The risk of developing and progressing to LVH in patients with EH can be determined by the method of measuring three indicators.
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Yazar T, Olgun Yazar H, Cihan M. Evaluation of serum galectin-3 levels at Alzheimer patients by stages: a preliminary report. Acta Neurol Belg 2021; 121:949-954. [PMID: 32852752 DOI: 10.1007/s13760-020-01477-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/17/2020] [Indexed: 02/11/2023]
Abstract
BACKGROUND AND AIMS Neuroinflammation has a critic role in the pathophysiology of neurological diseases. The activation of microglia is the main actor in this process. The aim of this study to collect data on the role of microglial activation in the etiology, and the possible continuum at the stage of disease through the evaluation of serum galectin-3 levels in patients with Alzheimer's disease (AD). METHODS This was a prospective and cross-sectional study conducted on patients who were diagnosed as having AD using the criteria of the National Institute of Neurological and Communicative Disorders and Stroke-Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) and stages determined with the scales of Clinical Dementia Rating (CDR) and Mini-Mental State Examination (MMSE) with healthy controls. RESULTS In our study, we studied 118 people, 57 with AD and 61 healthy people as a control group. In the AD patient group, serum galectin-3 levels were higher compared with the control group (p = 0.003). There were no significant differences in either group in other collected parameters (p > 0.05). It was observed that in all patients with AD, parallel to the stage of the disease, serum galectin-3 levels, patience's age, and duration of disease were statically and significantly increased (p < 0.05). CONCLUSION In conclusion, serum galactin-3 levels may be associated with AD and maybe a potential biomarker for the identification of disease in the early stages. In future years, serum galectin-3 levels may become an important biomarker and therapeutic agent for chronic neurodegenerative diseases such as AD.
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Simultaneous hyperbaric oxygen therapy during systemic chemotherapy reverses chemotherapy-induced peripheral neuropathy by inhibiting TLR4 and TRPV1 activation in the central and peripheral nervous system. Support Care Cancer 2021; 29:6841-6850. [PMID: 34003380 DOI: 10.1007/s00520-021-06269-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND AND OBJECTIVES Chemotherapy-induced peripheral neuropathy (CIPN) is considered one of the most common sequelae in patients with cancer who experience consistent abnormal sensations or pain symptoms during or after paclitaxel (PAC) chemotherapy. Transient receptor potential vanilloid 1 (TRPV1) and toll-like receptor 4 (TLR4) have been reported to interact in the nervous system in patients with CIPN. The antinociceptive effects of hyperbaric oxygen therapy (HBOT) on CIPN was demonstrated in this study through behavior tests. Using a CIPN rat model, we examined the effects of simultaneous HBOT (SHBOT) administration during chemotherapy and discovered that SHBOT achieved better reversal effects than chemotherapy alone. MATERIALS AND METHODS Twenty-four rats were randomly allocated to four groups: control, PAC, SHBOT, and HBOT after PAC groups. Behavior tests were performed to evaluate mechanical allodynia and thermal hyperalgesia status. Tissues from the spinal cord and dorsal root ganglions were collected, and TLR4 and TRPV1 expression and microglial activation were investigated through immunofluorescence (IF) staining. RESULTS The mechanical and thermal behavior tests revealed that HBOT intervention during PAC treatment led to the early alleviation of CIPN symptoms and inhibited CIPN deterioration. IF staining revealed that TLR4, TRPV1, and microglial activation were all upregulated in PAC-injected rats and exhibited early and significant downregulation in SHBOT-treated rats. CONCLUSION This study is the first to demonstrate that the use of SHBOT during PAC treatment has potential for the early suppression of CIPN initiation and deterioration, indicating that it can alleviate CIPN symptoms and may reverse CIPN in patients undergoing systemic chemotherapy.
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Smolle C, Lindenmann J, Kamolz L, Smolle-Juettner FM. The History and Development of Hyperbaric Oxygenation (HBO) in Thermal Burn Injury. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:49. [PMID: 33430046 PMCID: PMC7827759 DOI: 10.3390/medicina57010049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/02/2021] [Accepted: 01/04/2021] [Indexed: 12/26/2022]
Abstract
Background and Objectives: Hyperbaric oxygenation (HBO) denotes breathing of 100% oxygen under elevated ambient pressure. Since the initiation of HBO for burns in 1965, abundant experimental and clinical work has been done. Despite many undisputedly positive and only a few controversial results on the efficacy of adjunctive HBO for burn injury, the method has not yet been established in clinical routine. Materials and Methods: We did a retrospective analysis of the literature according to PRISMA-guidelines, from the very beginning of HBO for burns up to present, trying to elucidate the question why HBO is still sidelined in the treatment of burn injury. Results: Forty-seven publications (32 animal experiments, four trials in human volunteers and 11 clinical studies) fulfilled the inclusion criteria. Except four investigators who found little or no beneficial action, all were able to demonstrate positive effects of HBO, most of them describing less edema, improved healing, less infection or bacterial growth and most recently, reduction of post-burn pain. Secondary enlargement of burn was prevented, as microvascular perfusion could be preserved, and cells were kept viable. The application of HBO, however, concerning pressure, duration, frequency and number of treatment sessions, varied considerably. Authors of large clinical studies underscored the intricate measures required when administering HBO in severe burns. Conclusions: HBO unquestionably has a positive impact on the pathophysiological mechanisms, and hence on the healing and course of burns. The few negative results are most likely due to peculiarities in the administration of HBO and possibly also to interactions when delivering the treatment to severely ill patients. Well-designed studies are needed to definitively assess its clinical value as an adjunctive treatment focusing on relevant outcome criteria such as wound healing time, complications, length of hospital stay, mortality and scar quality, while also defining optimal HBO dosage and timing.
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Affiliation(s)
- Christian Smolle
- Division of Plastic, Aesthetic and Reconstructive Surgery, Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria; (C.S.); (L.K.)
- Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria
| | - Joerg Lindenmann
- Division of Plastic, Aesthetic and Reconstructive Surgery, Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria; (C.S.); (L.K.)
- Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria
| | - Lars Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria; (C.S.); (L.K.)
- Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria
| | - Freyja-Maria Smolle-Juettner
- Division of Plastic, Aesthetic and Reconstructive Surgery, Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria; (C.S.); (L.K.)
- Division of Thoracic and Hyperbaric Surgery, Medical University Graz, Auenbruggerplatz 29, A-8036 Graz, Austria
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Shen CM, Li Y, Liu Z, Qi YZ. Effective administration of cranial drilling therapy in the treatment of fourth degree temporal, facial and upper limb burns at high altitude: A case report. World J Clin Cases 2020; 8:5062-5069. [PMID: 33195683 PMCID: PMC7642563 DOI: 10.12998/wjcc.v8.i20.5062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/16/2020] [Accepted: 09/01/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Fourth degree burns damage the full thickness of the skin and affect underlying tissues. Skin grafting after debridement is often used to cover the wounds of salvageable severe burns. A granulation wound can be formed by drilling the skull to the barrier layer to solve the problem of skull exposure. Low oxygen levels present at high altitudes aggravate ischemia and hypoxia which can negatively impact wound healing. The impaired healing in such cases can be ameliorated by hyperbaric oxygen therapy.
CASE SUMMARY We describe a patient who presented with fourth degree burns to the left temporal and facial regions upon admission in December 2018. The periosteum of the skull and the deep fascia of the face were exposed. After the first stage of debridement and skin grafting, the temporal skin did not survive well. Granulation was induced by cranial drilling, and then a local flap was transferred to cover the wound. The left temporal and facial wounds were completely covered and the patient recovered well.
CONCLUSION Skin grafting and flap transfer after early debridement to cover the wound and control infection were of great significance. In the later stages of the patient’s treatment, survival of the skin graft and skin flap was observed. The second stage repair was performed to achieve successful skin grafting by cranial granulation. Granulation was formed by drilling the skull, and then the wound was closed, which is suitable for cases with skull exposure and wounds with poor blood supply. We consider that hyperbaric oxygen treatment and improving tissue oxygen supply were beneficial in this patient.
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Affiliation(s)
- Cong-Mo Shen
- Department of Burns and Plastic Surgery, Affiliated Hospital of Qinghai University, Xi’ning 810016, Qinghai Province, China
| | - Yi Li
- Department of Burns and Plastic Surgery, Affiliated Hospital of Qinghai University, Xi’ning 810016, Qinghai Province, China
| | - Zhou Liu
- Department of Cardiology, Affiliated Hospital of Jiangnan University, Wu’xi 214000, Jiangsu Province, China
| | - Yong-Zhang Qi
- Department of Burns and Plastic Surgery, Affiliated Hospital of Qinghai University, Xi’ning 810016, Qinghai Province, China
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Srejovic I, Selakovic D, Jovicic N, Jakovljević V, Lukic ML, Rosic G. Galectin-3: Roles in Neurodevelopment, Neuroinflammation, and Behavior. Biomolecules 2020; 10:biom10050798. [PMID: 32455781 PMCID: PMC7277476 DOI: 10.3390/biom10050798] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/1970] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 12/16/2022] Open
Abstract
There is a plethora of evidence to suggest that Galectin-3 plays an important role in normal functions of mammalian cells, as well as in different pathogenic conditions. This review highlights recent data published by researchers, including our own team, on roles of Galectin-3 in the nervous system. Here, we discuss the roles of Galectin-3 in brain development, its roles in glial cells, as well as the interactions of glial cells with other neural and invading cells in pathological conditions. Galectin-3 plays an important role in the pathogenesis of neuroinflammatory and neurodegenerative disorders, such as multiple sclerosis, Alzheimer’s disease, Parkinson’s disease, and Huntington’s disease. On the other hand, there is also evidence of the protective role of Galectin-3 due to its anti-apoptotic effect in target cells. Interestingly, genetic deletion of Galectin-3 affects behavioral patterns in maturing and adult mice. The results reviewed in this paper and recent development of highly specific inhibitors suggests that Galectin-3 may be an important therapeutic target in pathological conditions including the disorders of the central nervous system.
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Affiliation(s)
- Ivan Srejovic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac Serbia; (I.S.); (D.S.); (V.J.)
| | - Dragica Selakovic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac Serbia; (I.S.); (D.S.); (V.J.)
| | - Nemanja Jovicic
- Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac, Serbia;
| | - Vladimir Jakovljević
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac Serbia; (I.S.); (D.S.); (V.J.)
- Department of Human Pathology, 1st Moscow State Medical University IM Sechenov, 119146 Moscow, Russia
| | - Miodrag L. Lukic
- Department of Physiology—Molecular Medicine Unit, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac, Serbia
- Correspondence: (M.L.L.); (G.R.)
| | - Gvozden Rosic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac Serbia; (I.S.); (D.S.); (V.J.)
- Correspondence: (M.L.L.); (G.R.)
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Yazar HO, Yazar T, Cihan M. A preliminary data: Evaluation of serum Galectin-3 levels in patients with Idiopathic Parkinson's Disease. J Clin Neurosci 2019; 70:164-168. [PMID: 31471077 DOI: 10.1016/j.jocn.2019.08.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/05/2019] [Indexed: 12/11/2022]
Abstract
AIM In our study, we aimed to collect data for the hypothesis that Galectin-3 might be used as a new prognostic and therapeutic biomarker in Idiopathic Parkinson's Disease (IPD). METHOD In this prospective and cross-sectional study, the Unified Parkinson's Disease Rating Scale (UPDRS) and Modified Hoehn and Yahr (H&Y) scales were applied to each patient diagnosed as IPD according to the UK Brain Bank diagnostic criteria. The control group consisted of healthy individuals with the same age, gender, and body mass index characteristics as the patients meeting the exclusion criteria. RESULTS A total of 111 cases were included in the study, 48 were IPD, and 63 were healthy controls. There were no statistically significant differences between the IPD and control groups in terms of demographic, anthropometric, and blood parameters (p > 0.05). Serum galectin-3 levels were significantly higher in IPD than the control group (p < 0.001). Serum galectin-3 levels, UPDRS scores, and duration of disease were significantly higher in patients with IPD in parallel with the progression of the disease (p < 0.001; 0.001; 0.009). No significant relationship was detected between the stage of the disease and other parameters (p < 0.05). CONCLUSION Our study supports the hypothesis that serum galectin-3 level might be associated with IPD. Our data suggest that serum galectin-3 levels might be an accessible biomarker for the detection and prevention of chronic, progressive diseases such as IPH.
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Affiliation(s)
- Hülya Olgun Yazar
- Ordu University Training and Research Hospital, Clinic of Neurology, Turkey.
| | - Tamer Yazar
- Ordu State Hospital, Clinic of Neurology, Turkey
| | - Murat Cihan
- Ordu University Training and Research Hospital, Clinical Biochemist, Turkey
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Dose-Dependent Effect of Hyperbaric Oxygen Treatment on Burn-Induced Neuropathic Pain in Rats. Int J Mol Sci 2019; 20:ijms20081951. [PMID: 31010055 PMCID: PMC6514672 DOI: 10.3390/ijms20081951] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/12/2019] [Accepted: 04/18/2019] [Indexed: 02/07/2023] Open
Abstract
Hyperbaric oxygen treatment (HBOT) has been used to reduce neuropathic pain. Melatonin and opioid receptors are involved in neuropathic pain, but it is not known if HBOT works through these pathways to achieve its antinociceptive effect. We divided anesthetized rats into two treatment and three sham groups. The two treatment groups received third-degree burns on their right hind paws, one treated in a hyperbaric chamber for a week and the other for two weeks. We evaluated the mechanical paw-withdrawal threshold (MWT) and expression of melatonin receptor 1 (MT1), melatonin receptor 2 (MT2), μ (MOR) and κ (KOR) opioid receptor, brain-derived neurotrophic factor (BDNF), Substance P, and calcitonin gene-related peptide (CGRP) in cuneate nucleus, dorsal horn, and hind paw skin by immunohistochemical, immunofluorescence assays and real-time quantitative polymerase chain reaction (RT-PCR). The group receiving one-week HBOT had increased expressions of MT1, MT2, MOR and KOR and decreased expressions of BDNF, Substance P, and CGRP. Their mechanically measured pain levels returned to normal within a week and lasted three weeks. This anti-allodynia effect lasted twice as long in those treated for two weeks. Our findings suggest that increasing the duration of HBOT can reduce burn-induced mechanical allodynia for an extended period of time in rats. The upregulation of melatonin and opioid receptors observed after one week of HBOT suggests they may be partly involved in attenuation of the mechanical allodynia. Downregulation of BDNF, substance P and CGRP may have also contributed to the overall beneficial effect of HBOT.
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