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Strickland AD, Ozturk M, Conti T, Tabatabaei F. Copper-based dressing: Efficacy in a wound infection of ex vivo human skin. Tissue Cell 2023; 84:102196. [PMID: 37611328 DOI: 10.1016/j.tice.2023.102196] [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: 04/06/2023] [Revised: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023]
Abstract
This study aimed to evaluate the wound healing and antibacterial effects of two experimental copper dressings compared to a commercial silver dressing. Burn wounds were created in the ex vivo human skin biopsies, then were infected by Staphylococcus aureus. Tissues were treated with copper dressings, silver dressing, or a dressing without any antibacterial component. An infected wound tissue without treatment was considered as the control group. Three days after treatments, tissues were analyzed by bacterial count and histology staining, while their media was used to assess the expression of cytokines and chemokines. Histology staining confirmed the presence of second-degree burn wounds and colonization of bacteria in the surface and superficial layer of tissues. The results demonstrated a higher antibacterial effect, improved epithelium formation, and decreased wound area in one of the copper dressings compared to other dressings. Markers associated with infection control increased in both the copper and silver-treated groups. The cytokine profiling analysis revealed increased expression of markers related to angiogenesis and anti-inflammatory responses and decreased pro-inflammatory cytokine responses in the infected wound treated with one of the copper dressings. Our results confirmed the efficacy of the experimental copper dressing in reducing bacteria and promoting wound healing.
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Akkaoui MA, Palagini L, Geoffroy PA. Sleep Immune Cross Talk and Insomnia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1411:263-273. [PMID: 36949314 DOI: 10.1007/978-981-19-7376-5_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Sleep and immunity have bidirectional relationships. In this chapter, we review the links between sleep and immunity, focusing on immune changes occurring in the insomnia disorder. During physiological sleep, there is a decrease of pro-inflammatory cytokines (IL-1, IL-6 and TNF-α) and a decrease of anti-inflammatory cytokines (IL-4, IL-10). Examinations of ratios of pro-inflammatory and anti-inflammatory cytokines allow to identify rather a pro-inflammatory activity at the beginning of the night and confirm then anti-inflammatory during the second part of the night. Immune cells, as NK-cells, decrease in the blood, due to their migration to secondary lymphoid organs, but their activity increases. Inversely, a short sleep duration appears associated with increased inflammatory processes and increased risk of infection.Only few studies have investigated changes in immunity in patients with insomnia disorder. These studies suggest that insomnia disorder is related to deregulation of the immune system, with an increase in the level of pro-inflammatory cytokines and change in rate of secretion and a decrease in the level of lymphocyte. Insomnia treatments, particularly cognitive behavioral therapy (CBT-I), seems to have a restorative effect not only on sleep, but also on the associated inflammation. Melatonin also seems to reduce inflammation in patients suffering from insomnia disorder.More studies are necessary to better understand the pathophysiology of changes in immune system in patients suffering from insomnia disorders and their clinical implications.
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Affiliation(s)
- Marine Ambar Akkaoui
- Centre Psychiatrique d'Orientation et d'Accueil (CPOA), GHU Paris - Psychiatry & Neurosciences, Paris, France
- Etablissement Publique de Santé Mentale de Ville Evrard, Neuilly Sur Marne, France
| | - Laura Palagini
- Psychiatric Clinic, Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
- Psychiatric Clinic Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Pierre A Geoffroy
- Département de psychiatrie et d'addictologie, AP-HP, GHU Paris Nord, DMU Neurosciences, Hôpital Bichat - Claude Bernard, Paris, France
- GHU Paris - Psychiatry & Neurosciences, Paris, France
- Université de Paris, NeuroDiderot, Inserm, Paris, France
- CNRS UPR 3212, Institute for Cellular and Integrative Neurosciences, Strasbourg, France
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Midazolam's Effects on Delayed-Rectifier K + Current and Intermediate-Conductance Ca 2+-Activated K + Channel in Jurkat T-lymphocytes. Int J Mol Sci 2021; 22:ijms22137198. [PMID: 34281255 PMCID: PMC8267671 DOI: 10.3390/ijms22137198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 11/17/2022] Open
Abstract
Midazolam (MDZ) could affect lymphocyte immune functions. However, the influence of MDZ on cell’s K+ currents has never been investigated. Thus, in the present study, the effects of MDZ on Jurkat T lymphocytes were studied using the patch-clamp technique. Results showed that MDZ suppressed the amplitude of delayed-rectifier K+ current (IK(DR)) in concentration-, time-, and state-dependent manners. The IC50 for MDZ-mediated reduction of IK(DR) density was 5.87 μM. Increasing MDZ concentration raised the rate of current-density inactivation and its inhibitory action on IK(DR) density was estimated with a dissociation constant of 5.14 μM. In addition, the inactivation curve of IK(DR) associated with MDZ was shifted to a hyperpolarized potential with no change on the slope factor. MDZ-induced inhibition of IK(DR) was not reversed by flumazenil. In addition, the activity of intermediate-conductance Ca2+-activated K+ (IKCa) channels was suppressed by MDZ. Furthermore, inhibition by MDZ on both IK(DR) and IKCa-channel activity appeared to be independent from GABAA receptors and affected immune-regulating cytokine expression in LPS/PMA-treated human T lymphocytes. In conclusion, MDZ suppressed current density of IK(DR) in concentration-, time-, and state-dependent manners in Jurkat T-lymphocytes and affected immune-regulating cytokine expression in LPS/PMA-treated human T lymphocytes.
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Burn-Related Dysregulation of Inflammation and Immunity in Experimental and Clinical Studies. J Burn Care Res 2018; 38:e892-e899. [PMID: 28296672 DOI: 10.1097/bcr.0000000000000511] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The purpose of this study was to evaluate burn-related variations of inflammation and immunity. Fifty-five mice were divided randomly into sham burn and burn groups. Eighty-seven hospitalized burn patients were also reviewed. In mice, neutrophils and monocytes were elevated significantly on post burn day (PBD 1). Lymphocytes were reduced on PBDs 1 and 3. Levels of serum tumor necrosis factor-α and interleukin-6 were highest on PBD 1. Interleukin-1β levels were the highest on PBD 3. On PBD 3, CD4CD25T regulatory cells/CD4 cells in spleen were higher. On PBDs 1, 3, 7, and 14, percentage of splenic dendritic cells were significantly lower than the sham burn group. In patients, neutrophils and monocytes were significantly elevated on PBD 1. Levels declined but remained elevated at most days to PBD 7. Lymphocytes in burn groups 1 and 2 were reduced on PBDs 1 and 3, respectively. Our results exhibited that severe burn injury initiated a hyperinflammatory response and immunosuppression. PBDs 1 to 3 were important for changes in inflammation and immunosuppression.
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Sarapultsev AP, Vassiliev PM, Sarapultsev PA, Chupakhin ON, Ianalieva LR, Sidorova LP. Immunomodulatory Action of Substituted 1,3,4-Thiadiazines on the Course of Myocardial Infarction. Molecules 2018; 23:E1611. [PMID: 30004445 PMCID: PMC6099947 DOI: 10.3390/molecules23071611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 06/29/2018] [Accepted: 06/30/2018] [Indexed: 02/07/2023] Open
Abstract
This review focuses on the biological action of the compounds from the group of substituted 1,3,4-thiadiazines on stress response and myocardial infarction. The aim of this review is to propose the possible mechanisms of action of 1,3,4-thiadiazines and offer prospectives in the development of new derivatives as therapeutic agents. It is known, that compounds that have biological effects similar to those used as antidepressants can down-regulate the secretion of proinflammatory cytokines, up-regulate the release of anti-inflammatory ones and affect cell recruitment, which allows them to be considered immunomodulators as well. The results of pharmacological evaluation, in silico studies, and in vivo experiments of several compounds from the group of substituted 1,3,4-thiadiazines with antidepressant properties are presented. It is proposed that the cardioprotective effects of substituted 1,3,4-thiadiazines might be explained by the peculiarities of their multi-target action: the ability of the compounds to interact with various types of receptors and transporters of dopaminergic, serotonergic and acetylcholinergic systems and to block the kinase signal pathway PI3K-AKT. The described effects of substituted 1,3,4-thiadiazines suggest that it is necessary to search for a new agents for limiting the peripheral inflammatory/ischemic damage through the entral mechanisms of stress reaction and modifying pro-inflammatory cytokine signaling pathways in the brain.
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Affiliation(s)
- Alexey P Sarapultsev
- Institute of Immunology and Physiology of the Ural Branch of RAS, Pervomayskaya 106, Ekaterinburg 620049, Russia.
| | - Pavel M Vassiliev
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Square 1, Volgograd 400131, Russia.
| | - Petr A Sarapultsev
- Institute of Immunology and Physiology of the Ural Branch of RAS, Pervomayskaya 106, Ekaterinburg 620049, Russia.
| | - Oleg N Chupakhin
- The IJ Postovsky Institute of Organic Synthesis of the Ural Branch of RAS, Akademicheskaya/S. Kovalevskoi, 22/20, Ekaterinburg 620990, Russia.
- Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira Street, Ekaterinburg 620002, Russia.
| | - Laura R Ianalieva
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Square 1, Volgograd 400131, Russia.
| | - Larisa P Sidorova
- Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira Street, Ekaterinburg 620002, Russia.
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Neff C, Totten C, Plymale M, Oyler DR, Davenport D, Roth JS. Associations between anxiolytic medications and ventral hernia repair. Hernia 2018; 22:753-757. [PMID: 29594842 DOI: 10.1007/s10029-018-1766-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 03/23/2018] [Indexed: 11/25/2022]
Abstract
PURPOSE This study examines the relationship between anxiolytic medications (AXM) on outcomes following ventral hernia repair. METHODS A single-center review of prospectively obtained perioperative and 30-day outcome data, including AXM use at admission, as part of the National Surgery Quality Improvement Program. RESULTS Sixty-three of the 393 patients who presented for ventral hernia repair were taking an AXM (15.6%). AXM users were more likely to have a higher ASA class, dyspnea, and treated hypertension (p < 0.05). AXM use was associated with increased operative duration, hernia size, increased estimated blood loss, and need for component separation. After adjusting for medical comorbidities, AXM users were not found to have greater 30-day morbidity or mortality. Patients taking AXM were found to have greater length of stay and increased hospital readmissions. CONCLUSIONS Patients taking anxiolytic medications undergoing ventral hernia repairs have higher ASA scores, more complex hernia characteristics, and require more concurrent procedures. They were found to have longer operative times, increased blood loss, greater duration of hospital stay, and increased readmissions that were associated with the increased perioperative risk factors. Further studies are required to determine causal links.
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Affiliation(s)
- C Neff
- Division of General Surgery, University of Kentucky College of Medicine, C 225, 800 Rose Street, Lexington, KY, 40536, USA
| | - C Totten
- Division of General Surgery, University of Kentucky College of Medicine, C 225, 800 Rose Street, Lexington, KY, 40536, USA
| | - M Plymale
- Division of General Surgery, University of Kentucky College of Medicine, C 225, 800 Rose Street, Lexington, KY, 40536, USA.
| | - D R Oyler
- Department of Pharmacy, University of Kentucky HealthCare, 800 Rose Street, Lexington, KY, 40536, USA
| | - D Davenport
- Department of Surgery, University of Kentucky College of Medicine, C 225, 800 Rose Street, Lexington, KY, 40536, USA
| | - J S Roth
- Division of General Surgery, University of Kentucky College of Medicine, C 225, 800 Rose Street, Lexington, KY, 40536, USA
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Kim EJ, Kim SH. Anti-inflammatory effects of low-level laser in burn wound models in rats. ACTA ACUST UNITED AC 2017. [DOI: 10.14474/ptrs.2017.6.4.170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Eun-Jeong Kim
- Department of Physical Therapy, College of Public Health and Welfare, Dongshin University, Naju, Republic of Korea
| | - Se-Hun Kim
- Department of Physical Therapy, College of Public Health and Welfare, Dongshin University, Naju, Republic of Korea
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Souza HR, de Azevedo LR, Possebon L, Costa SDS, Iyomasa-Pilon MM, Oliani SM, Girol AP. Heterogeneity of mast cells and expression of Annexin A1 protein in a second degree burn model with silver sulfadiazine treatment. PLoS One 2017; 12:e0173417. [PMID: 28278234 PMCID: PMC5344483 DOI: 10.1371/journal.pone.0173417] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 02/19/2017] [Indexed: 11/30/2022] Open
Abstract
Mast cells (MCs) participate in all stages of skin healing and one of their mediators is the Annexin A1 protein (AnxA1), linked to inflammation, proliferation, migration and apoptosis processes, but not studied in thermal burns yet. Therefore, our objectives were to evaluate the behavior of MCs and AnxA1 in a second degree burn model, treated or not with silver sulfadiazine 1% (SDP 1%) and associated to macrophages quantification and cytokines dosages. MCs counts showed few cells in the early stages of repair but increased MCs in the final phases in the untreated group. The normal skin presented numerous tryptase-positive MCs that were reduced after burning in all analyzed periods. Differently, few chymase-positive MCs were observed in the early stages of healing, however, increased chymase-positive MCs were found at the final phase in the untreated group. MCs also showed high immunoreactivity for AnxA1 on day 3 in both groups. In the tissue there was a strong protein expression in the early stages of healing, but in the final phases only in the SDP treated animals. TNF-α, IL-1β, IL-6, IL-10 and MCP-1 levels and macrophages quantification were increased in inflammation and reepithelialization phases. Reduced IL-1β, IL-6 and IL-10 levels and numerous macrophages occurred in the treated animals during tissue repair. Our results indicate modulation in the profile of MCs and AnxA1expression during healing by the treatment with SDP 1%, pointing them as targets for therapeutic interventions on skin burns.
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Affiliation(s)
- Helena Ribeiro Souza
- Integrated College Padre Albino Foundation (FIPA), Catanduva, São Paulo, Brazil
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Lucas Ribeiro de Azevedo
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Lucas Possebon
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Sara de Souza Costa
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
| | | | - Sonia Maria Oliani
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Ana Paula Girol
- Integrated College Padre Albino Foundation (FIPA), Catanduva, São Paulo, Brazil
- Department of Biology, Laboratory of Immunomorphology, São Paulo State University, (UNESP), São José do Rio Preto, São Paulo, Brazil
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Chi Y, Chai J, Xu C, Luo H, Zhang Q. The extracellular matrix protein matrilin-2 induces post-burn inflammatory responses as an endogenous danger signal. Inflamm Res 2015; 64:833-9. [DOI: 10.1007/s00011-015-0867-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 06/17/2015] [Accepted: 08/05/2015] [Indexed: 11/30/2022] Open
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Silver Sulfadiazine Retards Wound Healing in Mice via Alterations in Cytokine Expression. J Invest Dermatol 2015; 135:1459-1462. [DOI: 10.1038/jid.2015.21] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Xiao D, Zhang D, Xiang D, Liu QI, Liu Y, Lv L, Xing X. Effects of fentanyl, midazolam and their combination on immune function and mortality in mice with sepsis. Exp Ther Med 2015; 9:1494-1500. [PMID: 25780458 PMCID: PMC4353768 DOI: 10.3892/etm.2015.2227] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 01/09/2015] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to investigate the effects of fentanyl and/or midazolam on the immune function and mortality of septic mice. Mice were randomly divided into sham-operated, model, fentanyl-, midazolam- and combination-treated groups. The body weights and locomotor activities of the mice were measured, prior to and following surgery, and the mortality rates following surgery were recorded and compared among these groups. The organ weights and the corresponding coefficients were measured and calculated. Leukocyte numbers in peritoneal and thoracic cavity lavage fluid were counted, and the serum levels of the inflammation-related cytokines interleukin (IL)-1β, IL-10, tumor necrosis factor (TNF)-α, procalcitonin (PCT) and C-reactive protein (CRP) were detected by enzyme-linked immunosorbent assay (ELISA). The results demonstrated that the locomotor activities were reduced in septic mice, and medication led to significant declined body weights in these model animals. Importantly, the mortality rates of the septic mice were reduced by fentanyl and/or midazolam, and the histopathological changes were influenced by the medication. Moreover, in the medication-treated groups, the leukocyte numbers in the peritoneal cavity lavage fluid were lower than those in the model group, while the medication slightly increased the numbers of leukocytes in the thoracic cavity lavage fluid. ELISA indicated that the levels of proinflammatory cytokines were reduced by fentanyl and/or midazolam, which may contribute to the beneficial effects of these medications in septic mice. Analgesic and/or sedative drugs could reduce inflammatory responses in septic mice, and immunosedation may have contributed to the improved mortality rates in these models. These results provide a theoretical basis for further clinical studies concerning the treatment of sepsis with these medications.
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Affiliation(s)
- Dong Xiao
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Daquan Zhang
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Dongming Xiang
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Q I Liu
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Yan Liu
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Lei Lv
- Second Department of Critical Care Medicine, People's Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, Xinjiang 830001, P.R. China
| | - Xuezhong Xing
- Department of Critical Care Medicine, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
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Drummond PD, Dawson LF, Finch PM, Drummond ES, Wood FM, Fear MW. Up-regulation of cutaneous α1-adrenoceptors after a burn. Burns 2015; 41:1227-34. [PMID: 25630693 DOI: 10.1016/j.burns.2014.12.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 12/22/2014] [Accepted: 12/26/2014] [Indexed: 01/02/2023]
Abstract
Stimulation of α1-adrenoceptors evokes inflammatory cytokine production, boosts neurogenic inflammation and pain, and influences cellular migration and proliferation. As expression of α1-adrenoceptors increases on dermal nerves and keratinocytes after peripheral nerve injury, the aim of this study was to determine whether another form of tissue injury (a cutaneous burn) triggered a similar response. In particular, changes in expression of α1-adrenoceptors were investigated on dermal nerve fibres, keratinocytes and fibroblast-like cells using immunohistochemistry 2-12 weeks after a full thickness burn in Wistar rats. Within two weeks of the burn, local increases in α1-adrenoceptor expression were seen in the re-forming epidermis, in dense bands of spindle-shaped cells in the upper dermis (putatively infiltrating immune cells and fibroblasts), and on nerve fibres in the deep dermis. In addition, nerve fibre density increased approximately three-fold in the deep dermis, and this response persisted for several more weeks. In contrast, α1-adrenoceptor labelled cells and staining intensity in the upper dermis decreased contralateral to the burn, as did nerve fibre density in the deep dermis. These findings suggest that inflammatory mediators and/or growth factors at the site of a burn trigger the synthesis of α1-adrenoceptors on resident epidermal cells and nerve fibres, and an influx of α1-adrenoceptor labelled cells. The heightened expression of α1-adrenoceptors in injured tissue could shape inflammatory and wound healing responses.
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Affiliation(s)
- Peter D Drummond
- Centre for Research on Chronic Pain and Inflammatory Diseases, Murdoch University, Perth, Western Australia, Australia.
| | - Linda F Dawson
- Centre for Research on Chronic Pain and Inflammatory Diseases, Murdoch University, Perth, Western Australia, Australia
| | - Philip M Finch
- Centre for Research on Chronic Pain and Inflammatory Diseases, Murdoch University, Perth, Western Australia, Australia
| | - Eleanor S Drummond
- Centre for Research on Chronic Pain and Inflammatory Diseases, Murdoch University, Perth, Western Australia, Australia
| | - Fiona M Wood
- Burn Injury Research Unit, School of Surgery, University of Western Australia, Australia; The Fiona Wood Foundation, Perth, Western Australia, Australia; The Burns Service of Western Australia, WA Department of Health, Western Australia, Australia
| | - Mark W Fear
- Burn Injury Research Unit, School of Surgery, University of Western Australia, Australia; The Fiona Wood Foundation, Perth, Western Australia, Australia
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Abstract
Approximately 2457 research articles were published with burns in the title, abstract, and/or keyword in 2012. This number continues to rise through the years; this article reviews those selected by the Editor of one of the major journals in the field (Burns) and his colleague that are most likely to have the greatest likelihood of affecting burn care treatment and understanding. As done previously, articles were found and divided into these topic areas: epidemiology of injury and burn prevention, wound and scar characterization, acute care and critical care, inhalation injury, infection, psychological considerations, pain and itching management, rehabilitation, long-term outcomes, and burn reconstruction. Each selected article is mentioned briefly with comment from the authors; readers are referred to the full papers for further details.
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Affiliation(s)
- Steven E Wolf
- Division of Burn, Trauma, and Critical Care, Department of Surgery, University of Texas - Southwestern Medical Center, Dallas, TX 75390-9158, United States.
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14
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Nanduri B, Pendarvis K, Shack LA, Kumar R, Clymer JW, Korvick DL, Burgess SC. Ultrasonic incisions produce less inflammatory mediator response during early healing than electrosurgical incisions. PLoS One 2013; 8:e73032. [PMID: 24058457 PMCID: PMC3776814 DOI: 10.1371/journal.pone.0073032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 07/19/2013] [Indexed: 11/18/2022] Open
Abstract
As the use of laparoscopic surgery has become more widespread in recent years, the need has increased for minimally-invasive surgical devices that effectively cut and coagulate tissue with reduced tissue trauma. Although electrosurgery (ES) has been used for many generations, newly-developed ultrasonic devices (HARMONIC® Blade, HB) have been shown at a macroscopic level to offer better coagulation with less thermally-induced tissue damage. We sought to understand the differences between ES and HB at a microscopic level by comparing mRNA transcript and protein responses at the 3-day timepoint to incisions made by the devices in subcutaneous fat tissue in a porcine model. Samples were also assessed via histological examination. ES-incised tissue had more than twice as many differentially-expressed genes as HB (2,548 vs 1,264 respectively), and more differentially-expressed proteins (508 vs 432) compared to control (untreated) tissue. Evaluation of molecular functions using Gene Ontology showed that gene expression changes for the energized devices reflected the start of wound healing, including immune response and inflammation, while protein expression showed a slightly earlier stage, with some remnants of hemostasis. For both transcripts and proteins, ES exhibited a greater response than HB, especially in inflammatory mediators. These findings were in qualitative agreement with histological results. This study has shown that transcriptomics and proteomics can monitor the wound healing response following surgery and can differentiate between surgical devices. In agreement with clinical observations, electrosurgery was shown to incur a greater inflammatory immune response than an ultrasonic device during initial iatrogenic wound healing.
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Affiliation(s)
- Bindu Nanduri
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi, United States of America
- * E-mail:
| | - Ken Pendarvis
- Department of Veterinary Science and Microbiology, College of Agriculture and Life Sciences, Tucson, Arizona, United States of America
| | - Leslie A. Shack
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi, United States of America
| | - Ranjit Kumar
- Center for Clinical and Translational Science, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Jeffrey W. Clymer
- Preclinical Research, Ethicon Endo-Surgery, Inc., Cincinnati, Ohio, United States of America
| | - Donna L. Korvick
- Preclinical Research, Ethicon Endo-Surgery, Inc., Cincinnati, Ohio, United States of America
| | - Shane C. Burgess
- College of Agriculture and Life Sciences, University of Arizona, Tucson, Arizona, United States of America
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15
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Qin Y, Hamilton JL, Bird MD, Chen MM, Ramirez L, Zahs A, Kovacs EJ, Makowski L. Adipose inflammation and macrophage infiltration after binge ethanol and burn injury. Alcohol Clin Exp Res 2013; 38:204-13. [PMID: 23909743 DOI: 10.1111/acer.12210] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 05/06/2013] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ethanol (EtOH) exposure prior to traumatic injury, such as a burn, elevates systemic and local inflammatory responses and increases morbidity and mortality. Adipose is a large tissue mass that is often inflamed during obesity or other stresses, which disturbs metabolic homeostasis. To date, there has been little investigation into the inflammatory response of adipose tissue after combined EtOH exposure and burn injury. METHODS Two EtOH exposure regimens were utilized to examine the role of inflammation in adipose tissue after EtOH and burn injury. Mice were either given a single or episodic binge exposure to EtOH or saline followed by scald (burn) or sham injury 30 minutes later. Twenty-four hours post injury, serum and adipose tissue were collected for assessment of inflammatory mediators. RESULTS Single binge EtOH alone induced no inflammation in adipose when compared with sham vehicle-treated mice. However, single binge EtOH followed by burn injury induced significant elevations in mRNA and protein concentrations of pro-inflammatory mediators interleukin-6 (IL-6), KC, and monocyte chemoattractant protein 1 compared with either insult alone or sham vehicle group. Additionally, EtOH exposure and burn injury significantly blunted inducible nitric oxide synthase (iNOS), indicating a complex inflammatory response. Episodic binge EtOH exposure followed by burn injury exacerbated the postburn adipose inflammatory response. The magnitude of the episodic binge-induced inflammatory parameters postburn were 2- to 5-fold greater than the response detected after a single exposure of EtOH, indicating EtOH-induced potentiation of burn-induced inflammatory response. Finally, inflammatory loci and crown-like structures in adipose were significantly increased by episodic binge EtOH and burn injury. CONCLUSIONS This is the first report of binge and burn-induced crown-like structure formation. Evidence presented herein suggests an important role for alcohol and burn as an additional mediator of adipose inflammation in postburn injury, a common complication in burn patients.
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Affiliation(s)
- Yuanyuan Qin
- Nutrition Obesity Research Center, Departments of Nutrition and Medicine, Gillings School of Global Public Health and School of Medicine, UNC Chapel Hill, Chapel Hill, North Carolina
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Egydio F, Pires GN, Tufik S, Andersen ML. Wound-healing and benzodiazepines: does sleep play a role in this relationship? Clinics (Sao Paulo) 2012; 67:827-30. [PMID: 22892930 PMCID: PMC3400176 DOI: 10.6061/clinics/2012(07)20] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 02/22/2012] [Indexed: 11/18/2022] Open
Abstract
Patients who have suffered burns frequently experience psychological consequences, among which anxiety disorders are prominent. Benzodiazepines are commonly administered to treat these symptoms. The effects of benzodiazepines on healing may not be direct but rather are modulated by alterations of the sleep architecture. This hypothesis is supported by studies that demonstrate the effects of benzodiazepines on the immune system and the inflammatory profile under both normal sleep conditions and during sleep deprivation, particularly rapid eye movement sleep deprivation.
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Affiliation(s)
- Flavia Egydio
- Universidade Federal de São Paulo, Departamento de Psicobiologia, São Paulo/SP, Brazil
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