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Ullah H, Arbab S, Tian Y, Chen Y, Liu CQ, Li Q, Li K. Crosstalk between gut microbiota and host immune system and its response to traumatic injury. Front Immunol 2024; 15:1413485. [PMID: 39144142 PMCID: PMC11321976 DOI: 10.3389/fimmu.2024.1413485] [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: 04/07/2024] [Accepted: 06/04/2024] [Indexed: 08/16/2024] Open
Abstract
Millions of microorganisms make up the complex microbial ecosystem found in the human gut. The immune system's interaction with the gut microbiota is essential for preventing inflammation and maintaining intestinal homeostasis. Numerous metabolic products that can cross-talk between immune cells and the gut epithelium are metabolized by the gut microbiota. Traumatic injury elicits a great and multifaceted immune response in the minutes after the initial offense, containing simultaneous pro- and anti-inflammatory responses. The development of innovative therapies that improve patient outcomes depends on the gut microbiota and immunological responses to trauma. The altered makeup of gut microbes, or gut dysbiosis, can also dysregulate immunological responses, resulting in inflammation. Major human diseases may become more common as a result of chronic dysbiosis and the translocation of bacteria and the products of their metabolism beyond the mucosal barrier. In this review, we briefly summarize the interactions between the gut microbiota and the immune system and human disease and their therapeutic probiotic formulations. We also discuss the immune response to traumatic injury.
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Affiliation(s)
- Hanif Ullah
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Safia Arbab
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yali Tian
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Yuwen Chen
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Chang-qing Liu
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Qijie Li
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Ka Li
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials/Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
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Liu J, Shi C, Wang D, Cui X, Geng L, Cui J, Sun D, Yin Z. Effects of different anesthesia methods on labor process and postpartum serum estrogen and progesterone levels in primiparas with painless labor. Clinics (Sao Paulo) 2024; 79:100442. [PMID: 38996725 PMCID: PMC11301188 DOI: 10.1016/j.clinsp.2024.100442] [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: 04/07/2024] [Revised: 05/08/2024] [Accepted: 06/16/2024] [Indexed: 07/14/2024] Open
Abstract
OBJECTIVE To look into the effects of different anesthesia methods on the labor process and the expression of serum estrogen and progesterone in primiparas with painless labor. METHODS 60 primiparas receiving painless labor were selected as the research objects, and they were divided into either a Spinal & Continuous epidural anesthesia group (n = 30) or a continuous epidural anesthesia group (n = 30), anesthesia is administered using the corresponding anesthesia method. The authors compared serum estrogen and progesterone, inflammatory index expression, pain degree and neonatal health status in different periods. RESULTS At T2 and T3, serum P, LH, FSH and E2 levels in the Spinal & Continuous epidural anesthesia group were signally lower than those in the Spinal & Continuous epidural anesthesia group (p < 0.05). Spinal & Continuous epidural anesthesia group harbored faster onset and longer duration of sensory block and motor block than the Continuous epidural anesthesia group (p < 0.05). SAS and SDS scores of the Spinal & Continuous epidural anesthesia group were clearly lower than those of the Continuous epidural anesthesia group (p < 0.05). VAS score and serum TNF-α, IL-6 levels of pregnant women in the Spinal & Continuous epidural anesthesia group were memorably lower than those in the Continuous epidural anesthesia group at T2 and T3 (p < 0.05). The total incidence of postoperative complications in the Spinal & Continuous epidural anesthesia group was distinctively lower than that in the Continuous epidural anesthesia group (p < 0.05). CONCLUSION Spinal anesthesia combined with continuous epidural anesthesia has a better anesthesia effect in the painless labor of primiparas, which can effectually ameliorate the labor process and the expression of serum estrogen and progesterone.
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Affiliation(s)
- JunYan Liu
- Department of Anesthesiology, Cangzhou Hospital of Integrated TCM-WM·HEBEI, Cangzhou City, Heibei Province, China
| | - ChongLai Shi
- Department of Anesthesiology, Yangxin People's Hospital, Huangshi City, Hubei Province, China
| | - Dan Wang
- Department of Military Casualty Management, General Hospital of Western Theater of Chinese People's Liberation Army, Sichuan City, Chengdu Province, China
| | - XiaoDong Cui
- Department of Anesthesiology, Cangzhou Hospital of Integrated TCM-WM·HEBEI, Cangzhou City, Heibei Province, China
| | - LiLi Geng
- Department of Gynecology, Cangzhou Hospital of Integrated Chinese and Western medicine, Cangzhou City, Heibei Province, China
| | - JingJing Cui
- Department of Anesthesiology, Cangzhou Hospital of Integrated TCM-WM·HEBEI, Cangzhou City, Heibei Province, China
| | - DongMei Sun
- Department of Cardiovascular Medicine, Yanshan People's Hospital, Cangzhou City, Hebei Province, China
| | - Zhuo Yin
- Department of Anesthesiology, DaLian Medical center For Women and Children, Dalian City, Liaoning Province, 116011, China.
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Santacruz CA, Vincent JL, Duitama J, Bautista E, Imbault V, Bruneau M, Creteur J, Brimioulle S, Communi D, Taccone FS. vCSF Danger-associated Molecular Patterns After Traumatic and Nontraumatic Acute Brain Injury: A Prospective Study. J Neurosurg Anesthesiol 2024; 36:252-257. [PMID: 37188652 DOI: 10.1097/ana.0000000000000916] [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: 10/15/2022] [Accepted: 03/14/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Danger-associated molecular patterns (DAMPs) may be implicated in the pathophysiological pathways associated with an unfavorable outcome after acute brain injury (ABI). METHODS We collected samples of ventricular cerebrospinal fluid (vCSF) for 5 days in 50 consecutive patients at risk of intracranial hypertension after traumatic and nontraumatic ABI. Differences in vCSF protein expression over time were evaluated using linear models and selected for functional network analysis using the PANTHER and STRING databases. The primary exposure of interest was the type of brain injury (traumatic vs. nontraumatic), and the primary outcome was the vCSF expression of DAMPs. Secondary exposures of interest included the occurrence of intracranial pressure ≥20 or ≥ 30 mm Hg during the 5 days post-ABI, intensive care unit (ICU) mortality, and neurological outcome (assessed using the Glasgow Outcome Score) at 3 months post-ICU discharge. Secondary outcomes included associations of these exposures with the vCSF expression of DAMPs. RESULTS A network of 6 DAMPs ( DAMP_trauma ; protein-protein interaction [PPI] P =0.04) was differentially expressed in patients with ABI of traumatic origin compared with those with nontraumatic ABI. ABI patients with intracranial pressure ≥30 mm Hg differentially expressed a set of 38 DAMPS ( DAMP_ICP30 ; PPI P < 0.001). Proteins in DAMP_ICP30 are involved in cellular proteolysis, complement pathway activation, and post-translational modifications. There were no relationships between DAMP expression and ICU mortality or unfavorable versus favorable outcomes. CONCLUSIONS Specific patterns of vCSF DAMP expression differentiated between traumatic and nontraumatic types of ABI and were associated with increased episodes of severe intracranial hypertension.
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Affiliation(s)
- Carlos A Santacruz
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
- Department of Intensive and Critical Care Medicine, Santa Fe de Bogotá Foundation
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jorge Duitama
- Systems and Computing Engineering Department, University of los Andes, Bogotá, Colombia
| | - Edwin Bautista
- Department of Intensive and Critical Care Medicine, Santa Fe de Bogotá Foundation
| | - Virginie Imbault
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium
| | - Michael Bruneau
- Department of Neurosurgery, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jacques Creteur
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Serge Brimioulle
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - David Communi
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium
| | - Fabio S Taccone
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
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Amin N, Abbasi IN, Wu F, Shi Z, Sundus J, Badry A, Yuan X, Zhao BX, Pan J, Mi XD, Luo Y, Geng Y, Fang M. The Janus face of HIF-1α in ischemic stroke and the possible associated pathways. Neurochem Int 2024; 177:105747. [PMID: 38657682 DOI: 10.1016/j.neuint.2024.105747] [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: 03/01/2024] [Accepted: 04/19/2024] [Indexed: 04/26/2024]
Abstract
Stroke is the most devastating disease, causing paralysis and eventually death. Many clinical and experimental trials have been done in search of a new safe and efficient medicine; nevertheless, scientists have yet to discover successful remedies that are also free of adverse effects. This is owing to the variability in intensity, localization, medication routes, and each patient's immune system reaction. HIF-1α represents the modern tool employed to treat stroke diseases due to its functions: downstream genes such as glucose metabolism, angiogenesis, erythropoiesis, and cell survival. Its role can be achieved via two downstream EPO and VEGF strongly related to apoptosis and antioxidant processes. Recently, scientists paid more attention to drugs dealing with the HIF-1 pathway. This review focuses on medicines used for ischemia treatment and their potential HIF-1α pathways. Furthermore, we discussed the interaction between HIF-1α and other biological pathways such as oxidative stress; however, a spotlight has been focused on certain potential signalling contributed to the HIF-1α pathway. HIF-1α is an essential regulator of oxygen balance within cells which affects and controls the expression of thousands of genes related to sustaining homeostasis as oxygen levels fluctuate. HIF-1α's role in ischemic stroke strongly depends on the duration and severity of brain damage after onset. HIF-1α remains difficult to investigate, particularly in ischemic stroke, due to alterations in the acute and chronic phases of the disease, as well as discrepancies between the penumbra and ischemic core. This review emphasizes these contrasts and analyzes the future of this intriguing and demanding field.
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Affiliation(s)
- Nashwa Amin
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; Department of Zoology, Faculty of Science, Aswan University, Egypt; Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Irum Naz Abbasi
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Fei Wu
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Zongjie Shi
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Javaria Sundus
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Azhar Badry
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Xia Yuan
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Bing-Xin Zhao
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Jie Pan
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Xiao-Dan Mi
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yuhuan Luo
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Geng
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Marong Fang
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China; Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
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Haque I, Thapa P, Burns DM, Zhou J, Sharma M, Sharma R, Singh V. NLRP3 Inflammasome Inhibitors for Antiepileptogenic Drug Discovery and Development. Int J Mol Sci 2024; 25:6078. [PMID: 38892264 PMCID: PMC11172514 DOI: 10.3390/ijms25116078] [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: 05/07/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Epilepsy is one of the most prevalent and serious brain disorders and affects over 70 million people globally. Antiseizure medications (ASMs) relieve symptoms and prevent the occurrence of future seizures in epileptic patients but have a limited effect on epileptogenesis. Addressing the multifaceted nature of epileptogenesis and its association with the Nod-like receptor family pyrin domain containing 3 (NLRP3) inflammasome-mediated neuroinflammation requires a comprehensive understanding of the underlying mechanisms of these medications for the development of targeted therapeutic strategies beyond conventional antiseizure treatments. Several types of NLRP3 inhibitors have been developed and their effect has been validated both in in vitro and in vivo models of epileptogenesis. In this review, we discuss the advances in understanding the regulatory mechanisms of NLRP3 activation as well as progress made, and challenges faced in the development of NLRP3 inhibitors for the treatment of epilepsy.
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Affiliation(s)
- Inamul Haque
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
- Department of Math, Science and Business Technology, Kansas City Kansas Community College, Kansas City, KS 66112, USA
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Pritam Thapa
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
- Drug Discovery Program, Midwest Veterans’ Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| | - Douglas M. Burns
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
| | - Jianping Zhou
- Renal Research Laboratory, Kansas City VA Medical Center, Kansas City, MO 64128, USA;
| | - Mukut Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
- Drug Discovery Program, Midwest Veterans’ Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
- Renal Research Laboratory, Kansas City VA Medical Center, Kansas City, MO 64128, USA;
| | - Ram Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
| | - Vikas Singh
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO 64128, USA; (P.T.); (D.M.B.); (M.S.); (R.S.)
- Drug Discovery Program, Midwest Veterans’ Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
- Division of Neurology, Kansas City VA Medical Center, Kansas City, MO 64128, USA
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Huang S, Ma Q, Liao X, Yin X, Shen T, Liu X, Tang W, Wang Y, Wang L, Xin H, Li X, Chang L, Chen Z, Liu R, Wu C, Wang D, Guo G, Zhu F. Identification of early coagulation changes associated with survival outcomes post severe burns from multiple perspectives. Sci Rep 2024; 14:10457. [PMID: 38714778 PMCID: PMC11076290 DOI: 10.1038/s41598-024-61194-0] [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: 01/06/2024] [Accepted: 05/02/2024] [Indexed: 05/10/2024] Open
Abstract
Coagulation alterations manifest early after severe burns and are closely linked to mortality outcomes. Nevertheless, the precise characterization of coagulation changes associated with early mortality remains elusive. We examined alterations in indicators linked to mortality outcomes at both the transcriptomic and clinical characteristic levels. At the transcriptomic level, we pinpointed 28 differentially expressed coagulation-related genes (DECRGs) following burn injuries and endeavored to validate their causal relationships through Mendelian randomization. DECRGs tied to survival exhibit a significant association with neutrophil function, wherein the expression of CYP4F2 and P2RX1 serves as robust predictors of fatal outcomes. In terms of clinical indicators, early levels of D-dimer and alterations in serum calcium show a strong correlation with mortality outcomes. Coagulation depletion and fibrinolytic activation, stemming from the hyperactivation of coagulation pathways post-severe burns, are strongly linked to patient mortality. Monitoring these early coagulation markers with predictive value can effectively identify individuals necessitating priority critical care.
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Affiliation(s)
- Shengyu Huang
- Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Qimin Ma
- Department of Critical Care Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Xincheng Liao
- Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Xi Yin
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital, Suzhou, 215600, China
| | - Tuo Shen
- Department of Critical Care Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Xiaobin Liu
- Department of Critical Care Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Wenbin Tang
- Department of Burns, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Yusong Wang
- ICU of Burn and Trauma, the First Affiliated Hospital of Naval Medical University, Shanghai, 200433, China
| | - Lei Wang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Haiming Xin
- Department of Burns and Plastic Surgery, The 924th Hospital of the Chinese People's Liberation Army, Guilin, 541002, China
| | - Xiaoliang Li
- Department of Burns and Plastic Surgery, Zhengzhou First People's Hospital, Zhengzhou, 450004, China
| | - Liu Chang
- Department of Burns and Plastic Surgery, the Fourth People's Hospital of Dalian, Dalian, 116031, China
| | - Zhaohong Chen
- Department of Burns, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Rui Liu
- Department of Burn Surgery, Heilongjiang Provincial Hospital, Harbin, 150036, China
| | - Choulang Wu
- Department of Burns, Taizhou Hospital of Zhejiang Province, Linhai, 317000, China
| | - Deyun Wang
- Department of Burns, Wuhan Third Hospital, Wuhan, 430060, China
| | - Guanghua Guo
- Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, China.
| | - Feng Zhu
- Department of Critical Care Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China.
- ICU of Burn and Trauma, the First Affiliated Hospital of Naval Medical University, Shanghai, 200433, China.
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Moghaddam MM, Behzadi E, Sedighian H, Goleij Z, Kachuei R, Heiat M, Fooladi AAI. Regulation of immune responses to infection through interaction between stem cell-derived exosomes and toll-like receptors mediated by microRNA cargoes. Front Cell Infect Microbiol 2024; 14:1384420. [PMID: 38756232 PMCID: PMC11096519 DOI: 10.3389/fcimb.2024.1384420] [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: 02/09/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
Infectious diseases are among the factors that account for a significant proportion of disease-related deaths worldwide. The primary treatment approach to combat microbial infections is the use of antibiotics. However, the widespread use of these drugs over the past two decades has led to the emergence of resistant microbial species, making the control of microbial infections a serious challenge. One of the most important solutions in the field of combating infectious diseases is the regulation of the host's defense system. Toll-like receptors (TLRs) play a crucial role in the first primary defense against pathogens by identifying harmful endogenous molecules released from dying cells and damaged tissues as well as invading microbial agents. Therefore, they play an important role in communicating and regulating innate and adaptive immunity. Of course, excessive activation of TLRs can lead to disruption of immune homeostasis and increase the risk of inflammatory reactions. Targeting TLR signaling pathways has emerged as a new therapeutic approach for infectious diseases based on host-directed therapy (HDT). In recent years, stem cell-derived exosomes have received significant attention as factors regulating the immune system. The regulation effects of exosomes on the immune system are based on the HDT strategy, which is due to their cargoes. In general, the mechanism of action of stem cell-derived exosomes in HDT is by regulating and modulating immunity, promoting tissue regeneration, and reducing host toxicity. One of their most important cargoes is microRNAs, which have been shown to play a significant role in regulating immunity through TLRs. This review investigates the therapeutic properties of stem cell-derived exosomes in combating infections through the interaction between exosomal microRNAs and Toll-like receptors.
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Affiliation(s)
- Mehrdad Moosazadeh Moghaddam
- Tissue Engineering and Regenerative Medicine Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Elham Behzadi
- The Academy of Medical Sciences of I.R. Iran, Tehran, Iran
| | - Hamid Sedighian
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Zoleikha Goleij
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Reza Kachuei
- Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammad Heiat
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases (BRCGL), Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Ali Imani Fooladi
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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8
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Choi YK. Detrimental Roles of Hypoxia-Inducible Factor-1α in Severe Hypoxic Brain Diseases. Int J Mol Sci 2024; 25:4465. [PMID: 38674050 PMCID: PMC11050730 DOI: 10.3390/ijms25084465] [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: 03/14/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Hypoxia stabilizes hypoxia-inducible factors (HIFs), facilitating adaptation to hypoxic conditions. Appropriate hypoxia is pivotal for neurovascular regeneration and immune cell mobilization. However, in central nervous system (CNS) injury, prolonged and severe hypoxia harms the brain by triggering neurovascular inflammation, oxidative stress, glial activation, vascular damage, mitochondrial dysfunction, and cell death. Diminished hypoxia in the brain improves cognitive function in individuals with CNS injuries. This review discusses the current evidence regarding the contribution of severe hypoxia to CNS injuries, with an emphasis on HIF-1α-mediated pathways. During severe hypoxia in the CNS, HIF-1α facilitates inflammasome formation, mitochondrial dysfunction, and cell death. This review presents the molecular mechanisms by which HIF-1α is involved in the pathogenesis of CNS injuries, such as stroke, traumatic brain injury, and Alzheimer's disease. Deciphering the molecular mechanisms of HIF-1α will contribute to the development of therapeutic strategies for severe hypoxic brain diseases.
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Affiliation(s)
- Yoon Kyung Choi
- Department of Integrative Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
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9
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Zhong H, Ji J, Zhuang J, Xiong Z, Xie P, Liu X, Zheng J, Tian W, Hong X, Tang J. Tissue-resident macrophages exacerbate lung injury after remote sterile damage. Cell Mol Immunol 2024; 21:332-348. [PMID: 38228746 PMCID: PMC10979030 DOI: 10.1038/s41423-024-01125-1] [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: 07/04/2023] [Accepted: 12/26/2023] [Indexed: 01/18/2024] Open
Abstract
Remote organ injury, which is a common secondary complication of sterile tissue damage, is a major cause of poor prognosis and is difficult to manage. Here, we report the critical role of tissue-resident macrophages in lung injury after trauma or stroke through the inflammatory response. We found that depleting tissue-resident macrophages rather than disrupting the recruitment of monocyte-derived macrophages attenuated lung injury after trauma or stroke. Our findings revealed that the release of circulating alarmins from sites of distant sterile tissue damage triggered an inflammatory response in lung-resident macrophages by binding to receptor for advanced glycation end products (RAGE) on the membrane, which activated epidermal growth factor receptor (EGFR). Mechanistically, ligand-activated RAGE triggered EGFR activation through an interaction, leading to Rab5-mediated RAGE internalization and EGFR phosphorylation, which subsequently recruited and activated P38; this, in turn, promoted RAGE translation and trafficking to the plasma membrane to increase the cellular response to RAGE ligands, consequently exacerbating inflammation. Our study also showed that the loss of RAGE or EGFR expression by adoptive transfer of macrophages, blocking the function of RAGE with a neutralizing antibody, or pharmacological inhibition of EGFR activation in macrophages could protect against trauma- or stroke-induced remote lung injury. Therefore, our study revealed that targeting the RAGE-EGFR signaling pathway in tissue-resident macrophages is a potential therapeutic approach for treating secondary complications of sterile damage.
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Affiliation(s)
- Hanhui Zhong
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Jingjing Ji
- The Department of Critical Care Medicine, General Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Jinling Zhuang
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Ziying Xiong
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Pengyun Xie
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Xiaolei Liu
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Jundi Zheng
- The Department of Respiratory Medicine, Guangdong Provincial Hospital of Integrated Chinese and Western Medicine, Foshan, China
| | - Wangli Tian
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Xiaoyang Hong
- Pediatric Intensive Care Unit, Senior Department of Pediatrics, the Seventh Medical Center of PLA General Hospital, Beijing, China.
| | - Jing Tang
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China.
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Mazzinari G, Rovira L, Albers-Warlé KI, Warlé MC, Argente-Navarro P, Flor B, Diaz-Cambronero O. Underneath Images and Robots, Looking Deeper into the Pneumoperitoneum: A Narrative Review. J Clin Med 2024; 13:1080. [PMID: 38398395 PMCID: PMC10889570 DOI: 10.3390/jcm13041080] [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: 01/18/2024] [Revised: 02/05/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Laparoscopy offers numerous advantages over open procedures, minimizing trauma, reducing pain, accelerating recovery, and shortening hospital stays. Despite other technical advancements, pneumoperitoneum insufflation has received little attention, barely evolving since its inception. We explore the impact of pneumoperitoneum on patient outcomes and advocate for a minimally invasive approach that prioritizes peritoneal homeostasis. The nonlinear relationship between intra-abdominal pressure (IAP) and intra-abdominal volume (IAV) is discussed, emphasizing IAP titration to balance physiological effects and surgical workspace. Maintaining IAP below 10 mmHg is generally recommended, but factors such as patient positioning and surgical complexity must be considered. The depth of neuromuscular blockade (NMB) is explored as another variable affecting laparoscopic conditions. While deep NMB appears favorable for surgical stillness, achieving a balance between IAP and NMB depth is crucial. Temperature and humidity management during pneumoperitoneum are crucial for patient safety and optical field quality. Despite the debate over the significance of temperature drop, humidification and the warming of insufflated gas offer benefits in peritoneal homeostasis and visual clarity. In conclusion, there is potential for a paradigm shift in pneumoperitoneum management, with dynamic IAP adjustments and careful control of insufflated gas temperature and humidity to preserve peritoneal homeostasis and improve patient outcomes in minimally invasive surgery.
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Affiliation(s)
- Guido Mazzinari
- Perioperative Medicine Research Group, Health Research Institute la Fe, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain; (P.A.-N.); (O.D.-C.)
- Department of Anesthesiology, La Fe University Hospital, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain
- Department of Statistics and Operational Research, University of Valencia, Calle Doctor Moliner 50, 46100 Burjassot, Spain
| | - Lucas Rovira
- Department of Anesthesiology, Consorcio Hospital General Universitario de Valencia, Av. de les Tres Creus, 2, L’Olivereta, 46014 València, Spain; (L.R.); (B.F.)
| | - Kim I. Albers-Warlé
- Department of Colorectal Surgery, La Fe University Hospital, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain;
- Department of Anesthesiology, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
| | - Michiel C. Warlé
- Departments of Surgery, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands;
| | - Pilar Argente-Navarro
- Perioperative Medicine Research Group, Health Research Institute la Fe, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain; (P.A.-N.); (O.D.-C.)
| | - Blas Flor
- Department of Anesthesiology, Consorcio Hospital General Universitario de Valencia, Av. de les Tres Creus, 2, L’Olivereta, 46014 València, Spain; (L.R.); (B.F.)
| | - Oscar Diaz-Cambronero
- Perioperative Medicine Research Group, Health Research Institute la Fe, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain; (P.A.-N.); (O.D.-C.)
- Department of Anesthesiology, La Fe University Hospital, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain
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11
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Gando S, Levi M, Toh CH. Trauma-induced innate immune activation and disseminated intravascular coagulation. J Thromb Haemost 2024; 22:337-351. [PMID: 37816463 DOI: 10.1016/j.jtha.2023.09.028] [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: 05/19/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/12/2023]
Abstract
Dysregulated innate immunity participates in the pathomechanisms of disseminated intravascular coagulation (DIC) in trauma-induced coagulopathy. Accidental and regulated cell deaths and neutrophil extracellular traps release damage-associated molecular patterns (DAMPs), such as histones, nuclear and mitochondrial DNA, and high-mobility group box 1, into circulation immediately after trauma. DAMP-induced inflammation activation releases tissue factor-bearing procoagulant extracellular vesicles through gasdermin D-mediated pore formation and plasma membrane rupture by regulated cell death. DAMPs also evoke systemic inflammation, platelet, coagulation activation, and impaired fibrinolysis associated with endothelial injury, leading to the dysfunction of anticoagulation systems, which are the main pathophysiological mechanisms of DIC. All these processes induce systemic thrombin generation in vivo, not restricted to the injury sites immediately after trauma. Thrombin generation at the site of injury stops bleeding and maintains homeostasis. However, DIC associated with endothelial injury generates massive thrombin, enhancing protease-activated, receptor-mediated bidirectional interplays between inflammation and coagulation, aggravating the diverse actions of thrombin and disturbing homeostasis. Insufficiently regulated thrombin causes disseminated microvascular thrombosis, resulting in tissue hypoxia due to reduced oxygen delivery, and mitochondrial dysfunction due to DAMPs causes tissue dysoxia. In addition, DAMP-induced calcium influx and overload, as well as neutrophil activation, play a role in endothelial cell injury. Tissue hypoxia and cytotoxicity result in multiple organ dysfunction in DIC after trauma. Controls against dysregulated innate immunity evoking systemic inflammation, thrombin generation, and cytotoxicity are key issues in improving the prognosis of DIC in trauma-induced coagulopathy.
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Affiliation(s)
- Satoshi Gando
- Department of Acute and Critical Care Medicine, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan; Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan.
| | - Marcel Levi
- Department of Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands; Department of Medicine, University College London Hospitals NHS Foundation Trust, and Cardio-Metabolic Program - NIHR UCLH/UCL BRC London, London, United Kingdom
| | - Cheng-Hock Toh
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom; Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
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12
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Zhou M, Zhang H, Xu X, Chen H, Qi B. Association between circulating cell-free mitochondrial DNA and inflammation factors in noninfectious diseases: A systematic review. PLoS One 2024; 19:e0289338. [PMID: 38241222 PMCID: PMC10798522 DOI: 10.1371/journal.pone.0289338] [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: 08/16/2022] [Accepted: 07/18/2023] [Indexed: 01/21/2024] Open
Abstract
OBJECTIVE This study aimed to assess the correlation between the circulating cell-free mitochondria DNA and inflammation factors in noninfectious disease by meta-analysis of data from eligible studies. MATERIALS AND METHODS Through a comprehensive searching of pubmed, embase, web of science, cochrane from establishment of the database to October 31, 2022, studies were selected that investigated the association of circulating cell free mitochondria DNA with inflammatory factors in non-infectious diseases. Studies that met the inclusion criteria and were published in English or Chinese were included. Data of each correlation coefficients were extracted from the paper and 95% confidence intervals were calculated. Sensitivity and heterogeneity tests were carried out for each data. RESULTS A total of 660 articles were retrieved and 22 were included in this meta-analysis, including 2600 patients. A fixed effects model was employed to examine ISS and IL-8, others were analyzed using random effects models. The correlation coefficient between mtDNA and ISS score was 0.37 (95%CI = [0.232;0.494]), p<0.0001, heterogeneity I2 = 46%, p = 0.11). The correlation coefficients between mtDNA and inflammatory factors are as follows: TNFα, 0.405 [(95%CI = [0.253;0.538], p<0.0001, heterogeneity I2 = 77%, p = 0.0001]. IL-6, 0.469 [(95%CI = [0.296;0.612]), p = 0.0001, heterogeneity I2 = 93%, p<0.0001]. CRP, 0.333[(95%CI = [0.149;0.494]), p = 0.005, heterogeneity I2 = 85%, p<0.0001]. IL-8, 0.343[(95%CI = [0.233;0.524]), p = 0.001, heterogeneity I2 = 50%, p = 0.09]. PCT, 0.333 [(95%CI = [0.06;0.64]), p = 0.09,heterogeneity I2 = 64%,p = 0.06]. There were no significant publication bias for TNFα, IL-6 and CRP. CONSLUSION Circulating cell free mtDNA was moderate positively correlated with the expression of inflammatory factors and the degree of trauma.
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Affiliation(s)
- Min Zhou
- Department of Orthopeadics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Hao Zhang
- Department of Orthopeadics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xin Xu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Hairen Chen
- Department of Orthopeadics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Baiwen Qi
- Department of Orthopeadics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
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13
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Mokhtari T, Uludag K. Role of NLRP3 Inflammasome in Post-Spinal-Cord-Injury Anxiety and Depression: Molecular Mechanisms and Therapeutic Implications. ACS Chem Neurosci 2024; 15:56-70. [PMID: 38109051 DOI: 10.1021/acschemneuro.3c00596] [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] [Indexed: 12/19/2023] Open
Abstract
The majority of research on the long-term effects of spinal cord injury (SCI) has primarily focused on neuropathic pain (NP), psychological issues, and sensorimotor impairments. Among SCI patients, mood disorders, such as anxiety and depression, have been extensively studied. It has been found that chronic stress and NP have negative consequences and reduce the quality of life for individuals living with SCI. Our review examined both human and experimental evidence to explore the connection between mood changes following SCI and inflammatory pathways, with a specific focus on NLRP3 inflammasome signaling. We observed increased proinflammatory factors in the blood, as well as in the brain and spinal cord tissues of SCI models. The NLRP3 inflammasome plays a crucial role in various diseases by controlling the release of proinflammatory molecules like interleukin 1β (IL-1β) and IL-18. Dysregulation of the NLRP3 inflammasome in key brain regions associated with pain processing, such as the prefrontal cortex and hippocampus, contributes to the development of mood disorders following SCI. In this review, we summarized recent research on the expression and regulation of components related to NLRP3 inflammasome signaling in mood disorders following SCI. Finally, we discussed potential therapeutic approaches that target the NLRP3 inflammasome and regulate proinflammatory cytokines as a way to treat mood disorders following SCI.
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Affiliation(s)
- Tahmineh Mokhtari
- Hubei Key Laboratory of Embryonic Stem Cell Research, Faculty of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, Hubei, People's Republic of China
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, Hubei, People's Republic of China
| | - Kadir Uludag
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, People's Republic of China
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14
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St. John A, Wang X, Ringgold K, Lindner J, White N, Stern S, López J. ASSESSMENT OF ABNORMAL SKELETAL MUSCLE PERFUSION BY CONTRAST-ENHANCED ULTRASOUND WITH PARAMETRIC IMAGING IN RATS AFTER SEVERE INJURY, HEMORRHAGIC SHOCK, AND WHOLE BLOOD RESUSCITATION. Shock 2024; 61:150-156. [PMID: 38010084 PMCID: PMC10841438 DOI: 10.1097/shk.0000000000002267] [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] [Indexed: 11/29/2023]
Abstract
ABSTRACT Background: After severe injury, optical measures of microvascular blood flow (MBF) decrease and do not normalize with resuscitation to normal blood pressure. These changes are associated with organ dysfunction, coagulopathy, and death. However, the pathophysiology is not well understood. Several possible pathways could also contribute to the development of trauma-induced coagulopathy (TIC). A small-animal model of trauma-related MBF derangement that persists after resuscitation and includes TIC would facilitate further study. Parametric contrast-enhanced ultrasound (CEUS) is particularly advantageous in this setting, because it noninvasively assesses MBF in large, deep vascular beds. We sought to develop such a model, measuring MBF with CEUS. Methods: Sixteen male Sprague-Dawley rats were anesthetized, ventilated, and cannulated. Rats were subjected to either no injury (sham group) or a standardized polytrauma and pressure-targeted arterial catheter hemorrhage with subsequent whole blood resuscitation (trauma group). At prespecified time points, CEUS measurements of uninjured quadriceps muscle, viscoelastic blood clot strength, and complete blood counts were taken. Results: After resuscitation, blood pressure normalized, but MBF decreased and remained low for the rest of the protocol. This was primarily driven by a decrease in blood volume with a relative sparing of blood velocity. Viscoelastic blood clot strength and platelet count also decreased and remained low throughout the protocol. Conclusion: We present a rat model of MBF derangement in uninjured skeletal muscle and coagulopathy after polytrauma that persists after resuscitation with whole blood to normal macrohemodynamics. Parametric CEUS analysis shows that this change is primarily due to microvascular obstruction. This platform can be used to develop a deeper understanding of this important process.
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Affiliation(s)
- Alexander St. John
- Department of Emergency Medicine, University of Washington School of Medicine, Seattle, WA
| | - Xu Wang
- Department of Emergency Medicine, University of Washington School of Medicine, Seattle, WA
| | - Kristyn Ringgold
- Department of Emergency Medicine, University of Washington School of Medicine, Seattle, WA
| | - Jonathan Lindner
- Division of Cardiovascular Medicine, University of Virginia School of Medicine, Charlottesville, VA
| | - Nathan White
- Department of Emergency Medicine, University of Washington School of Medicine, Seattle, WA
| | - Susan Stern
- Department of Emergency Medicine, University of Washington School of Medicine, Seattle, WA
| | - José López
- Bloodworks Northwest Research Institute, Seattle, WA
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15
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Osuka A, Shigeno A, Matsuura H, Onishi S, Yoneda K. Systemic immune response of burns from the acute to chronic phase. Acute Med Surg 2024; 11:e976. [PMID: 38894736 PMCID: PMC11184575 DOI: 10.1002/ams2.976] [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: 01/11/2024] [Revised: 05/07/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Immune responses that occur following burn injury comprise a series of reactions that are activated in response to damaged autologous tissues, followed by removal of damaged tissues and foreign pathogens such as invading bacteria, and tissue repair. These immune responses are considered to be programmed in living organisms. Developments of modern medicine have led to the saving of burned patients who could not be cured previously; however, the programmed response is no longer able to keep up, and various problems have arisen. This paper describes the mechanism of immune response specific to burn injury and the emerging concept of persistent inflammation, immunosuppression, and catabolism syndrome.
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Affiliation(s)
- Akinori Osuka
- Department of Trauma, Critical Care Medicine and Burn CenterJapan Community Health Care Organization Chukyo HospitalNagoyaJapan
- Department of Traumatology and Acute Critical MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Ayami Shigeno
- Department of Trauma, Critical Care Medicine and Burn CenterJapan Community Health Care Organization Chukyo HospitalNagoyaJapan
| | - Hiroshi Matsuura
- Department of Trauma, Critical Care Medicine and Burn CenterJapan Community Health Care Organization Chukyo HospitalNagoyaJapan
- Osaka Prefectural Nakakawachi Emergency and Critical Care CenterOsakaJapan
| | - Shinya Onishi
- Department of Trauma, Critical Care Medicine and Burn CenterJapan Community Health Care Organization Chukyo HospitalNagoyaJapan
- Department of Traumatology and Acute Critical MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Kazuhiro Yoneda
- Department of Trauma, Critical Care Medicine and Burn CenterJapan Community Health Care Organization Chukyo HospitalNagoyaJapan
- Department of Traumatology and Acute Critical MedicineOsaka University Graduate School of MedicineOsakaJapan
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16
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Fachet M, Mushunuri RV, Bergmann CB, Marzi I, Hoeschen C, Relja B. Utilizing predictive machine-learning modelling unveils feature-based risk assessment system for hyperinflammatory patterns and infectious outcomes in polytrauma. Front Immunol 2023; 14:1281674. [PMID: 38193076 PMCID: PMC10773821 DOI: 10.3389/fimmu.2023.1281674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/23/2023] [Indexed: 01/10/2024] Open
Abstract
Purpose Earlier research has identified several potentially predictive features including biomarkers associated with trauma, which can be used to assess the risk for harmful outcomes of polytraumatized patients. These features encompass various aspects such as the nature and severity of the injury, accompanying health conditions, immune and inflammatory markers, and blood parameters linked to organ functioning, however their applicability is limited. Numerous indicators relevant to the patients` outcome are routinely gathered in the intensive care unit (ICU) and recorded in electronic medical records, rendering them suitable predictors for risk assessment of polytraumatized patients. Methods 317 polytraumatized patients were included, and the influence of 29 clinical and biological features on the complication patterns for systemic inflammatory response syndrome (SIRS), pneumonia and sepsis were analyzed with a machine learning workflow including clustering, classification and explainability using SHapley Additive exPlanations (SHAP) values. The predictive ability of the analyzed features within three days after admission to the hospital were compared based on patient-specific outcomes using receiver-operating characteristics. Results A correlation and clustering analysis revealed that distinct patterns of injury and biomarker patterns were observed for the major complication classes. A k-means clustering suggested four different clusters based on the major complications SIRS, pneumonia and sepsis as well as a patient subgroup that developed no complications. For classification of the outcome groups with no complications, pneumonia and sepsis based on boosting ensemble classification, 90% were correctly classified as low-risk group (no complications). For the high-risk groups associated with development of pneumonia and sepsis, 80% of the patients were correctly identified. The explainability analysis with SHAP values identified the top-ranking features that had the largest impact on the development of adverse outcome patterns. For both investigated risk scenarios (infectious complications and long ICU stay) the most important features are SOFA score, Glasgow Coma Scale, lactate, GGT and hemoglobin blood concentration. Conclusion The machine learning-based identification of prognostic feature patterns in patients with traumatic injuries may improve tailoring personalized treatment modalities to mitigate the adverse outcomes in high-risk patient clusters.
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Affiliation(s)
- Melanie Fachet
- Institute for Medical Technology, Medical Systems Technology, Faculty of Electrical Engineering and Information Technology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Raghava Vinaykanth Mushunuri
- Institute for Medical Technology, Medical Systems Technology, Faculty of Electrical Engineering and Information Technology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Christian B. Bergmann
- Translational and Experimental Trauma Research, Department of Trauma, Hand, Plastic and Reconstructive Surgery, Ulm University Medical Center, University Ulm, Ulm, Germany
| | - Ingo Marzi
- Department of Trauma, Hand and Reconstructive Surgery, Medical Faculty, Goethe University Frankfurt, Frankfurt, Germany
| | - Christoph Hoeschen
- Institute for Medical Technology, Medical Systems Technology, Faculty of Electrical Engineering and Information Technology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Borna Relja
- Translational and Experimental Trauma Research, Department of Trauma, Hand, Plastic and Reconstructive Surgery, Ulm University Medical Center, University Ulm, Ulm, Germany
- Department of Trauma, Hand and Reconstructive Surgery, Medical Faculty, Goethe University Frankfurt, Frankfurt, Germany
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17
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Murphy O, Forget P, Ma D, Buggy DJ. Tumour excisional surgery, anaesthetic-analgesic techniques, and oncologic outcomes: a narrative review. Br J Anaesth 2023; 131:989-1001. [PMID: 37689540 DOI: 10.1016/j.bja.2023.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 09/11/2023] Open
Abstract
Cancer is a growing global burden; there were an estimated 18 million new cancer diagnoses worldwide in 2020. Excisional surgery remains one of the main treatments for solid organ tumours in cancer patients and is potentially curative. Cancer- and surgery-induced inflammatory processes can facilitate residual tumour cell survival, growth, and subsequent recurrence. However, it has been hypothesised that anaesthetic and analgesic techniques during surgery might influence the risk of cancer recurrence. This narrative review aims to provide an updated summary of recent observational studies and new randomised controlled clinical trials on whether certain specific anaesthetic and analgesic techniques or perioperative interventions during tumour resection surgery of curative intent materially affect long-term oncologic outcomes.
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Affiliation(s)
- Orla Murphy
- Department of Anaesthesiology and Perioperative Medicine, Mater University Hospital, School of Medicine, University College Dublin, Dublin, Ireland
| | - Patrice Forget
- Epidemiology Group, Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK; Department of Anaesthesia, NHS Grampian, Aberdeen, UK; Euro-Periscope, The ESA-IC OncoAnaesthesiology Research Group
| | - Daqing Ma
- Euro-Periscope, The ESA-IC OncoAnaesthesiology Research Group; Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Donal J Buggy
- Department of Anaesthesiology and Perioperative Medicine, Mater University Hospital, School of Medicine, University College Dublin, Dublin, Ireland; Euro-Periscope, The ESA-IC OncoAnaesthesiology Research Group; Outcomes Research, Cleveland Clinic, Cleveland, OH, USA.
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18
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Nazari S, Pourmand SM, Motevaseli E, Hassanzadeh G. Mesenchymal stem cells (MSCs) and MSC-derived exosomes in animal models of central nervous system diseases: Targeting the NLRP3 inflammasome. IUBMB Life 2023; 75:794-810. [PMID: 37278718 DOI: 10.1002/iub.2759] [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: 03/08/2023] [Accepted: 05/02/2023] [Indexed: 06/07/2023]
Abstract
The NLRP3 (NOD-, LRR-, and pyrin domain-containing protein 3) inflammasome is a multimeric protein complex that is engaged in the innate immune system and plays a vital role in inflammatory reactions. Activation of the NLRP3 inflammasome and subsequent release of proinflammatory cytokines can be triggered by microbial infection or cellular injury. The NLRP3 inflammasome has been implicated in the pathogenesis of many disorders affecting the central nervous system (CNS), ranging from stroke, traumatic brain injury, and spinal cord injury to Alzheimer's disease, Parkinson's disease, epilepsy, multiple sclerosis, and depression. Furthermore, emerging evidence has suggested that mesenchymal stem cells (MSCs) and their exosomes may modulate NLRP3 inflammasome activation in a way that might be promising for the therapeutic management of CNS diseases. In the present review, particular focus is placed on highlighting and discussing recent scientific evidence regarding the regulatory effects of MSC-based therapies on the NLRP3 inflammasome activation and their potential to counteract proinflammatory responses and pyroptotic cell death in the CNS, thereby achieving neuroprotective impacts and improvement in behavioral impairments.
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Affiliation(s)
- Shahrzad Nazari
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mahmoud Pourmand
- School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elahe Motevaseli
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Hassanzadeh
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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19
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Sikora JP, Karawani J, Sobczak J. Neutrophils and the Systemic Inflammatory Response Syndrome (SIRS). Int J Mol Sci 2023; 24:13469. [PMID: 37686271 PMCID: PMC10488036 DOI: 10.3390/ijms241713469] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
We are not entirely able to understand, assess, and modulate the functioning of the immune system in clinical situations that lead to a systemic inflammatory response. In the search for diagnostic and treatment strategies (which are still far from perfect), it became very important to study the pathogenesis and participation of endogenous inflammation mediators. This study attempts to more precisely establish the role of neutrophils in individual phenomena occurring during an inflammatory and anti-inflammatory reaction, taking into account their cidal, immunoregulatory, and reparative abilities. Pro- and anticoagulatory properties of endothelium in systemic inflammatory response syndrome (SIRS) are emphasised, along with the resulting clinical implications (the application of immunotherapy using mesenchymal stem/stromal cells (MSCs) or IL-6 antagonists in sepsis and COVID-19 treatment, among others). Special attention is paid to reactive oxygen species (ROS), produced by neutrophils activated during "respiratory burst" in the course of SIRS; the protective and pathogenic role of these endogenous mediators is highlighted. Moreover, clinically useful biomarkers of SIRS (neutrophil extracellular traps, cell-free DNA, DAMP, TREMs, NGAL, miRNA, selected cytokines, ROS, and recognised markers of endothelial damage from the group of adhesins by means of immunohistochemical techniques) related to the neutrophils are presented, and their role in the diagnosing and forecasting of sepsis, burn disease, and COVID-19 is emphasised. Finally, examples of immunomodulation of sepsis and antioxidative thermal injury therapy are presented.
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Affiliation(s)
- Janusz P. Sikora
- Department of Paediatric Emergency Medicine, 2nd Chair of Paediatrics, Central Clinical Hospital, Medical University of Łódź, ul. Sporna 36/50, 91-738 Łódź, Poland;
| | - Jakub Karawani
- Faculty of Medicine, Lazarski University, ul. Świeradowska 43, 02-662 Warsaw, Poland;
| | - Jarosław Sobczak
- Department of Paediatric Emergency Medicine, 2nd Chair of Paediatrics, Central Clinical Hospital, Medical University of Łódź, ul. Sporna 36/50, 91-738 Łódź, Poland;
- Department of Management and Logistics in Healthcare, Medical University of Łódź, ul. Lindleya 6, 90-131 Łódź, Poland
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20
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Meng F, Zhou Y, Wagner A, Bülow JM, Köhler K, Neunaber C, Bundkirchen K, Relja B. Impact of age on liver damage, inflammation, and molecular signaling pathways in response to femoral fracture and hemorrhage. Front Immunol 2023; 14:1239145. [PMID: 37691959 PMCID: PMC10484338 DOI: 10.3389/fimmu.2023.1239145] [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: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Background Trauma causes disability and mortality globally, leading to fractures and hemorrhagic shock. This can trigger an irregular inflammatory response that damages remote organs, including liver. Aging increases the susceptibility to dysregulated immune responses following trauma, raising the risk of organ damage, infections, and higher morbidity and mortality in elderly patients. This study investigates how aging affects liver inflammation and damage post-trauma. Methods 24 male C57BL/6J mice were randomly divided into four groups. Twelve young (17-26 weeks) and 12 aged (64-72 weeks) mice were included. Mice further underwent either hemorrhagic shock (trauma/hemorrhage, TH), and femoral fracture (osteotomy) with external fixation (Fx) (THFx, n=6) or sham procedures (n=6). After 24 hours, mice were sacrificed. Liver injury and apoptosis were evaluated using hematoxylin-eosin staining and activated caspase-3 immunostaining. CXCL1 and infiltrating polymorphonuclear leukocytes (PMNL) in the liver were assessed by immunostaining, and concentrations of CXCL1, TNF, IL-1β, and IL-10 in the liver tissue were determined by ELISA. Gene expression of Tnf, Cxcl1, Il-1β, and Cxcl2 in the liver tissue was determined by qRT-PCR. Finally, western blot was used to determine protein expression levels of IκBα, Akt, and their phosphorylated forms. Results THFx caused liver damage and increased presence of active caspase-3-positive cells compared to the corresponding sham group. THFx aged group had more severe liver injury than the young group. CXCL1 and PMNL levels were significantly higher in both aged groups, and THFx caused a greater increase in CXCL and PMNL levels in aged compared to the young group. Pro-inflammatory TNF and IL-1β levels were elevated in aged groups, further intensified by THFx. Anti-inflammatory IL-10 levels were lower in aged groups. Tnf and Cxcl1 gene expression was enhanced in the aged sham group. Phosphorylation ratio of IκBα was significantly increased in the aged sham group versus young sham group. THFx-induced IκBα phosphorylation in the young group was significantly reduced in the aged THFx group. Akt phosphorylation was significantly reduced in the THFx aged group compared to the THFx young group. Conclusion The findings indicate that aging may lead to increased vulnerability to liver injury and inflammation following trauma due to dysregulated immune responses.
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Affiliation(s)
- Fanshuai Meng
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, Translational and Experimental Trauma Research, Ulm University Medical Center, Ulm, Germany
- Department of Trauma and Reconstructive Surgery, Uniklinik RWTH Aachen, Aachen, Germany
| | - Yuzhuo Zhou
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, Translational and Experimental Trauma Research, Ulm University Medical Center, Ulm, Germany
- Department of Trauma Surgery, Hannover Medical School, Hannover, Germany
| | - Alessa Wagner
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, Translational and Experimental Trauma Research, Ulm University Medical Center, Ulm, Germany
| | - Jasmin Maria Bülow
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, Translational and Experimental Trauma Research, Ulm University Medical Center, Ulm, Germany
| | - Kernt Köhler
- Institute of Veterinary Pathology, Justus Liebig University Giessen, Giessen, Germany
| | - Claudia Neunaber
- Department of Trauma Surgery, Hannover Medical School, Hannover, Germany
| | - Katrin Bundkirchen
- Department of Trauma Surgery, Hannover Medical School, Hannover, Germany
| | - Borna Relja
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, Translational and Experimental Trauma Research, Ulm University Medical Center, Ulm, Germany
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Horner E, Lord JM, Hazeldine J. The immune suppressive properties of damage associated molecular patterns in the setting of sterile traumatic injury. Front Immunol 2023; 14:1239683. [PMID: 37662933 PMCID: PMC10469493 DOI: 10.3389/fimmu.2023.1239683] [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: 06/13/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
Associated with the development of hospital-acquired infections, major traumatic injury results in an immediate and persistent state of systemic immunosuppression, yet the underlying mechanisms are poorly understood. Detected in the circulation in the minutes, days and weeks following injury, damage associated molecular patterns (DAMPs) are a heterogeneous collection of proteins, lipids and DNA renowned for initiating the systemic inflammatory response syndrome. Suggesting additional immunomodulatory roles in the post-trauma immune response, data are emerging implicating DAMPs as potential mediators of post-trauma immune suppression. Discussing the results of in vitro, in vivo and ex vivo studies, the purpose of this review is to summarise the emerging immune tolerising properties of cytosolic, nuclear and mitochondrial-derived DAMPs. Direct inhibition of neutrophil antimicrobial activities, the induction of endotoxin tolerance in monocytes and macrophages, and the recruitment, activation and expansion of myeloid derived suppressor cells and regulatory T cells are examples of some of the immune suppressive properties assigned to DAMPs so far. Crucially, with studies identifying the molecular mechanisms by which DAMPs promote immune suppression, therapeutic strategies that prevent and/or reverse DAMP-induced immunosuppression have been proposed. Approaches currently under consideration include the use of synthetic polymers, or the delivery of plasma proteins, to scavenge circulating DAMPs, or to treat critically-injured patients with antagonists of DAMP receptors. However, as DAMPs share signalling pathways with pathogen associated molecular patterns, and pro-inflammatory responses are essential for tissue regeneration, these approaches need to be carefully considered in order to ensure that modulating DAMP levels and/or their interaction with immune cells does not negatively impact upon anti-microbial defence and the physiological responses of tissue repair and wound healing.
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Affiliation(s)
- Emily Horner
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Janet M. Lord
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Jon Hazeldine
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
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Dell'Olio F, Siciliani RA, Novielli G, Tempesta A, Favia G, Limongelli L. The Effect of a Zinc-L-Carnosine Mouthwash in the Management of Oral Surgical Wounds: Preliminary Results of a Prospective Cohort Study. Dent J (Basel) 2023; 11:181. [PMID: 37504247 PMCID: PMC10378135 DOI: 10.3390/dj11070181] [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: 06/06/2023] [Revised: 06/29/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND Zinc L-carnosine promotes the transition from the inflammatory to the proliferative phase of wound healing by reducing the expression of pro-inflammatory signals and enhancing the expression of anti-inflammatory signals. This prospective cohort study aims to test the effect of a zinc-L-carnosine mouthwash in promoting oral surgical wound healing. METHODS From October 2022 to February 2023, the authors enrolled healthy adult volunteers who needed the extraction of bilateral molars at the Unit of Dentistry of the University of Bari. The authors studied the baseline wound healing of each patient after the first extraction. Three months later, the patients underwent the second extraction and rinsed their mouths with zinc-L-carnosine mouthwash twice per day for the following 28 postoperative days. For a month after each extraction, the patients received weekly follow-up visits by an oral surgeon blinded about the study to record the modified healing index score of the wounds (range 0-6 points). For statistical analysis, we used the one-tailed t-test for paired samples with a significance level set at p < 0.05 to compare the baseline scores with those recorded during the exposure to the zinc-L-carnosine mouthwash. RESULTS The authors enrolled four women and six men (mean age = 44.60 ± 19.22 years). On the seventh and fourteenth postoperative days, the mean difference between the modified healing index scores obtained by using the zinc-L-carnosine mouthwash and the baseline was not significant. On the twenty-first postoperative day, the mean score obtained by using the mouthwash was 5.2 ± 1.3 points and was significantly higher than the 4.7 ± 1.8 points of the baseline (p = 0.026). On the twenty-eighth postoperative day, the mean difference was significant as well (5.9 ± 0.3 points and 5.4 ± 1.1 points, respectively). CONCLUSION The preliminary results of this study showed that the zinc-L-carnosine mouthwash improved the quality of oral surgical wound healing.
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Affiliation(s)
- Fabio Dell'Olio
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Rosaria Arianna Siciliani
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Gianluigi Novielli
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Angela Tempesta
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Gianfranco Favia
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Luisa Limongelli
- Unit of Odontostomatology, Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70121 Bari, Italy
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Young MD, Cancio TS, Thorpe CR, Willis RP, Snook JK, Jordan BS, Demons ST, Salinas J, Yang Z. Circulatory HMGB1 is an early predictive and prognostic biomarker of ARDS and mortality in a swine model of polytrauma. Front Immunol 2023; 14:1227751. [PMID: 37520569 PMCID: PMC10382277 DOI: 10.3389/fimmu.2023.1227751] [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: 05/23/2023] [Accepted: 06/28/2023] [Indexed: 08/01/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a leading cause of morbidity and mortality in polytrauma patients. Pharmacological treatments of ARDS are lacking, and ARDS patients rely on supportive care. Accurate diagnosis of ARDS is vital for early intervention and improved outcomes but is presently delayed up to days. The use of biomarkers for early identification of ARDS development is a potential solution. Inflammatory mediators high-mobility group box 1 (HMGB1), syndecan-1 (SDC-1), and C3a have been previously proposed as potential biomarkers. For this study, we analyzed these biomarkers in animals undergoing smoke inhalation and 40% total body surface area burns, followed by intensive care for 72 h post-injury (PI) to determine their association with ARDS and mortality. We found that the levels of inflammatory mediators in serum were affected, as well as the degree of HMGB1 and Toll-like receptor 4 (TLR4) signal activation in the lung. The results showed significantly increased HMGB1 expression levels in animals that developed ARDS compared with those that did not. Receiver operating characteristic (ROC) analysis showed that HMGB1 levels at 6 h PI were significantly associated with ARDS development (AUROC=0.77) and mortality (AUROC=0.82). Logistic regression analysis revealed that levels of HMGB1 ≥24.10 ng/ml are associated with a 13-fold higher incidence of ARDS [OR:13.57 (2.76-104.3)], whereas the levels of HMGB1 ≥31.39 ng/ml are associated with a 12-fold increase in mortality [OR: 12.00 (2.36-93.47)]. In addition, we found that mesenchymal stem cell (MSC) therapeutic treatment led to a significant decrease in systemic HMGB1 elevation but failed to block SDC-1 and C3a increases. Immunohistochemistry analyses showed that smoke inhalation and burn injury induced the expression of HMGB1 and TLR4 and stimulated co-localization of HMGB1 and TLR4 in the lung. Interestingly, MSC treatment reduced the presence of HMGB1, TLR4, and the HMGB1-TLR4 co-localization. These results show that serum HMGB1 is a prognostic biomarker for predicting the incidence of ARDS and mortality in swine with smoke inhalation and burn injury. Therapeutically blocking HMGB1 signal activation might be an effective approach for attenuating ARDS development in combat casualties or civilian patients.
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Molinaro C, Scalise M, Leo I, Salerno L, Sabatino J, Salerno N, De Rosa S, Torella D, Cianflone E, Marino F. Polarizing Macrophage Functional Phenotype to Foster Cardiac Regeneration. Int J Mol Sci 2023; 24:10747. [PMID: 37445929 DOI: 10.3390/ijms241310747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
There is an increasing interest in understanding the connection between the immune and cardiovascular systems, which are highly integrated and communicate through finely regulated cross-talking mechanisms. Recent evidence has demonstrated that the immune system does indeed have a key role in the response to cardiac injury and in cardiac regeneration. Among the immune cells, macrophages appear to have a prominent role in this context, with different subtypes described so far that each have a specific influence on cardiac remodeling and repair. Similarly, there are significant differences in how the innate and adaptive immune systems affect the response to cardiac damage. Understanding all these mechanisms may have relevant clinical implications. Several studies have already demonstrated that stem cell-based therapies support myocardial repair. However, the exact role that cardiac macrophages and their modulation may have in this setting is still unclear. The current need to decipher the dual role of immunity in boosting both heart injury and repair is due, at least for a significant part, to unresolved questions related to the complexity of cardiac macrophage phenotypes. The aim of this review is to provide an overview on the role of the immune system, and of macrophages in particular, in the response to cardiac injury and to outline, through the modulation of the immune response, potential novel therapeutic strategies for cardiac regeneration.
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Affiliation(s)
- Claudia Molinaro
- Department of Medical and Surgical Sciences, Magna Graecia University, 88100 Catanzaro, Italy
| | - Mariangela Scalise
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Isabella Leo
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Luca Salerno
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Jolanda Sabatino
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Nadia Salerno
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Salvatore De Rosa
- Department of Medical and Surgical Sciences, Magna Graecia University, 88100 Catanzaro, Italy
| | - Daniele Torella
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Eleonora Cianflone
- Department of Medical and Surgical Sciences, Magna Graecia University, 88100 Catanzaro, Italy
| | - Fabiola Marino
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
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Camps J, Iftimie S, Arenas M, Castañé H, Jiménez-Franco A, Castro A, Joven J. Paraoxonase-1: How a xenobiotic detoxifying enzyme has become an actor in the pathophysiology of infectious diseases and cancer. Chem Biol Interact 2023; 380:110553. [PMID: 37201624 DOI: 10.1016/j.cbi.2023.110553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/08/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Both infectious and non-infectious diseases can share common molecular mechanisms, including oxidative stress and inflammation. External factors, such as bacterial or viral infections, excessive calorie intake, inadequate nutrients, or environmental factors, can cause metabolic disorders, resulting in an imbalance between free radical production and natural antioxidant systems. These factors may lead to the production of free radicals that can oxidize lipids, proteins, and nucleic acids, causing metabolic alterations that influence the pathogenesis of the disease. The relationship between oxidation and inflammation is crucial, as they both contribute to the development of cellular pathology. Paraoxonase 1 (PON1) is a vital enzyme in regulating these processes. PON1 is an enzyme that is bound to high-density lipoproteins and protects the organism against oxidative stress and toxic substances. It breaks down lipid peroxides in lipoproteins and cells, enhances the protection of high-density lipoproteins against different infectious agents, and is a critical component of the innate immune system. Impaired PON1 function can affect cellular homeostasis pathways and cause metabolically driven chronic inflammatory states. Therefore, understanding these relationships can help to improve treatments and identify new therapeutic targets. This review also examines the advantages and disadvantages of measuring serum PON1 levels in clinical settings, providing insight into the potential clinical use of this enzyme.
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Affiliation(s)
| | | | - Meritxell Arenas
- Department of Radiation Oncology, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
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26
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Milne A, Radhakrishnan A. Biochemical disturbance in damage control resuscitation: mechanisms, management and prognostic utility. Curr Opin Anaesthesiol 2023; 36:176-182. [PMID: 36728975 DOI: 10.1097/aco.0000000000001226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE OF REVIEW With advances in resuscitative techniques, trauma patients are surviving increasingly severe injuries and physiological insult. Timely recognition of futility remains important in terms of patient dignity and resource preservation yet is increasingly challenging in the face of these advances. The understanding of biochemical derangement from pathophysiological processes of trauma and iatrogenic effects of resuscitation has expanded recently. RECENT FINDINGS Acidosis and hypocalcaemia have been recognized as important contributors to mortality among trauma patients. Although less well recognized and studied, critical injury and high blood product volume resuscitation render patients vulnerable to life-threatening hyperkalaemia. The methods of correcting disruptions to acid-base and electrolyte homeostasis during damage control resuscitation have changed little recently and often rely on evidence from undifferentiated populations. Biochemical disturbances have value as ancillary predictors of futility in trauma resuscitation. SUMMARY These findings will contribute to a greater understanding among anaesthesiologists of the causative mechanisms and effects of biochemical derangement after severe injury and aid them in the delivery of well tolerated and effective damage control resuscitation. Gaps in the evidence base are highlighted to encourage future work.
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Affiliation(s)
- Andrew Milne
- Trauma Anaesthesia Group, Barts Health NHS Trust, Royal London Hospital, London, UK
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27
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Cell-Free DNA in Plasma and Serum Indicates Disease Severity and Prognosis in Blunt Trauma Patients. Diagnostics (Basel) 2023; 13:diagnostics13061150. [PMID: 36980458 PMCID: PMC10047705 DOI: 10.3390/diagnostics13061150] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 03/19/2023] Open
Abstract
Background: Trauma is still a major cause of mortality in people < 50 years of age. Biomarkers are needed to estimate the severity of the condition and the patient outcome. Methods: Cell-free DNA (cfDNA) and further laboratory markers were determined in plasma and serum of 164 patients at time of admission to the emergency room. Among them were 64 patients with severe trauma (Injury Severity Score (ISS) ≥ 16), 51 patients with moderate trauma (ISS < 16) and 49 patients with single fractures (24 femur neck and 25 ankle fractures). Disease severity was objectified by ISS and Glasgow Coma Scale (GCS). Results: cfDNA levels in plasma and serum were significantly higher in patients with severe multiple trauma (SMT) than in those with moderate trauma (p = 0.002, p = 0.003, respectively) or with single fractures (each p < 0.001). CfDNA in plasma and serum correlated very strongly with each other (R = 0.91; p < 0.001). The AUC in ROC curves for identification of SMT patients was 0.76 and 0.74 for cfDNA in plasma and serum, respectively—this was further increased to 0.84 by the combination of cfDNA and hemoglobin. Within the group of multiple trauma patients, cfDNA levels were significantly higher in more severely injured patients and patients with severe traumatic brain injury (GCS ≤ 8 versus GCS > 8). Thirteen (20.3%) of the multiple trauma patients died during the first week after trauma. Levels of cfDNA were significantly higher in non-surviving patients than in survivors (p < 0.001), reaching an AUC of 0.81 for cfDNA in both, plasma and serum, which was further increased by the combination with hemoglobin and leukocytes. Conclusions: cfDNA is valuable for estimation of trauma severity and prognosis of trauma patients.
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Weber B, Henrich D, Schindler CR, Marzi I, Leppik L. Release of exosomes in polytraumatized patients: The injury pattern is reflected by the surface epitopes. Front Immunol 2023; 14:1107150. [PMID: 36969201 PMCID: PMC10034046 DOI: 10.3389/fimmu.2023.1107150] [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: 11/24/2022] [Accepted: 02/27/2023] [Indexed: 03/11/2023] Open
Abstract
BackgroundTrauma is still a leading cause of morbidity and mortality, especially in the younger population. Trauma patients need a precise, early diagnostic to avoid complications like multiorgan failure and sepsis. Exosomes were described as markers and mediators in trauma. The aim of the present study was to analyze, whether the surface epitopes of plasma-exosomes can reflect the injury pattern in polytrauma.Material and MethodsPolytraumatized patients (Injury Severity Score = ISS ≥16, n = 38) were subdivided according to the predominant injury in either abdominal trauma, chest trauma or traumatic brain injury (TBI). Plasma exosomes were isolated via size exclusion chromatography. The concentration and size distribution of the plasma exosomes from emergency room samples were measured by nanoparticle tracking analysis. The exosomal surface antigens were investigated by bead-based multiplex flow cytometry and compared with healthy controls (n=10).ResultsIn contrast to other studies, we did not observe an increase in the total amount of plasma exosomes in polytrauma patients (1,15x109 vs. 1,13x109 particles/ml), but found changes in the exosomal surface epitopes. We found a significant reduction of CD42a+ (platelet-derived) exosomes in polytrauma patients, CD209+ (dendritic cell-derived) exosomes in the patients with predominant abdominal trauma, and CD11+ (monocyte-derived) exosomes in the patients with chest trauma. The group of patients with TBI was characterized in contrast by an increase of CD62p+ (endothelial/platelet-derived) exosomes (*p<0.05).ConclusionOur data showed that the polytrauma injury pattern might be reflected by the cellular origin/surface epitopes of plasma-released exosomes immediately after trauma. The observed reduction of CD42+ exosomes in polytrauma patients was not associated with a reduction of total platelets in polytrauma patients.
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Bain CR, Myles PS, Corcoran T, Dieleman JM. Postoperative systemic inflammatory dysregulation and corticosteroids: a narrative review. Anaesthesia 2023; 78:356-370. [PMID: 36308338 PMCID: PMC10092416 DOI: 10.1111/anae.15896] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2022] [Indexed: 12/15/2022]
Abstract
In some patients, the inflammatory-immune response to surgical injury progresses to a harmful, dysregulated state. We posit that postoperative systemic inflammatory dysregulation forms part of a pathophysiological response to surgical injury that places patients at increased risk of complications and subsequently prolongs hospital stay. In this narrative review, we have outlined the evolution, measurement and prediction of postoperative systemic inflammatory dysregulation, distinguishing it from a healthy and self-limiting host response. We reviewed the actions of glucocorticoids and the potential for heterogeneous responses to peri-operative corticosteroid supplementation. We have then appraised the evidence highlighting the safety of corticosteroid supplementation, and the potential benefits of high/repeated doses to reduce the risks of major complications and death. Finally, we addressed how clinical trials in the future should target patients at higher risk of peri-operative inflammatory complications, whereby corticosteroid regimes should be tailored to modify not only the a priori risk, but also further adjusted in response to markers of an evolving pathophysiological response.
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Affiliation(s)
- C R Bain
- Department of Anaesthesiology and Peri-operative Medicine, Alfred Hospital and Monash University, Melbourne, VIC, Australia
| | - P S Myles
- Department of Anaesthesiology and Peri-operative Medicine, Alfred Hospital and Monash University, Melbourne, VIC, Australia
| | - T Corcoran
- Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, WA, Australia
| | - J M Dieleman
- Department of Anaesthesia and Peri-operative Medicine, Westmead Hospital, Sydney and Western Sydney University, Sydney, NSW, Australia
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Maegele M, Aletti F, Efron PA, Relja B, Orfanos SE. NEW INSIGHTS INTO THE PATHOPHYSIOLOGY OF TRAUMA AND HEMORRHAGE. Shock 2023; 59:6-9. [PMID: 36867756 DOI: 10.1097/shk.0000000000001954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
ABSTRACT Circulatory shock from trauma and hemorrhage remains a clinical challenge with mortality still high within the first hours after impact. It represents a complex disease involving the impairment of a number of physiological systems and organs and the interaction of different pathological mechanisms. Multiple external and patient-specific factors may further modulate and complicate the clinical course. Recently, novel targets and models with complex multiscale interaction of data from different sources have been identified which offer new windows of opportunity. Future works needs to consider patient-specific conditions and outcomes to mount shock research onto the next higher level of precision and personalized medicine.
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Affiliation(s)
- Marc Maegele
- Department of Traumatology and Orthopedic Surgery, Cologne-Merheim Medical Center, Institute for Research in Operative Medicine, University Witten-Herdecke, Cologne, Germany
| | - Federico Aletti
- Instituto de Ciência e Tecnologia, Universidade Federal de São Paulo, São José dos Campos, Brazil
| | - Philip A Efron
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Laboratory of Inflammation Biology and Surgical Science, UF Health Critical Care Organization, Florida
| | - Borna Relja
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
| | - Stylianos E Orfanos
- 1st Department of Critical Care Medicine, National and Kapodistrian University of Athens, Medical School, Greece
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Layton R, Layton D, Beggs D, Fisher A, Mansell P, Stanger KJ. The impact of stress and anesthesia on animal models of infectious disease. Front Vet Sci 2023; 10:1086003. [PMID: 36816193 PMCID: PMC9933909 DOI: 10.3389/fvets.2023.1086003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Stress and general anesthesia have an impact on the functional response of the organism due to the detrimental effects on cardiovascular, immunological, and metabolic function, which could limit the organism's response to an infectious event. Animal studies have formed an essential step in understanding and mitigating infectious diseases, as the complexities of physiology and immunity cannot yet be replicated in vivo. Using animals in research continues to come under increasing societal scrutiny, and it is therefore crucial that the welfare of animals used in disease research is optimized to meet both societal expectations and improve scientific outcomes. Everyday management and procedures in animal studies are known to cause stress, which can not only cause poorer welfare outcomes, but also introduces variables in disease studies. Whilst general anesthesia is necessary at times to reduce stress and enhance animal welfare in disease research, evidence of physiological and immunological disruption caused by general anesthesia is increasing. To better understand and quantify the effects of stress and anesthesia on disease study and welfare outcomes, utilizing the most appropriate animal monitoring strategies is imperative. This article aims to analyze recent scientific evidence about the impact of stress and anesthesia as uncontrolled variables, as well as reviewing monitoring strategies and technologies in animal models during infectious diseases.
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Affiliation(s)
- Rachel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia,*Correspondence: Rachel Layton ✉
| | - Daniel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
| | - David Beggs
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Andrew Fisher
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Peter Mansell
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Kelly J. Stanger
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
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Dufour-Gaume F, Frescaline N, Cardona V, Prat NJ. Danger signals in traumatic hemorrhagic shock and new lines for clinical applications. Front Physiol 2023; 13:999011. [PMID: 36726379 PMCID: PMC9884701 DOI: 10.3389/fphys.2022.999011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 12/12/2022] [Indexed: 01/19/2023] Open
Abstract
Hemorrhage is the leading cause of death in severe trauma injuries. When organs or tissues are subjected to prolonged hypoxia, danger signals-known as damage-associated molecular patterns (DAMPs)-are released into the intercellular environment. The endothelium is both the target and a major provider of damage-associated molecular patterns, which are directly involved in immuno-inflammatory dysregulation and the associated tissue suffering. Although damage-associated molecular patterns release begins very early after trauma, this release and its consequences continue beyond the initial treatment. Here we review a few examples of damage-associated molecular patterns to illustrate their pathophysiological roles, with emphasis on emerging therapeutic interventions in the context of severe trauma. Therapeutic intervention administered at precise points during damage-associated molecular patterns release may have beneficial effects by calming the inflammatory storm triggered by traumatic hemorrhagic shock.
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Affiliation(s)
- Frédérique Dufour-Gaume
- Institut de Recherche Biomédicale des Armées (IRBA), Bretigny surOrge, France,*Correspondence: Frédérique Dufour-Gaume,
| | | | - Venetia Cardona
- Institut de Recherche Biomédicale des Armées (IRBA), Bretigny surOrge, France
| | - Nicolas J. Prat
- Institut de Recherche Biomédicale des Armées (IRBA), Bretigny surOrge, France
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Chen D, Zhang C, Luo J, Deng H, Yang J, Chen S, Zhang P, Dong L, Chang T, Tang ZH. Activated autophagy of innate immune cells during the early stages of major trauma. Front Immunol 2023; 13:1090358. [PMID: 36713435 PMCID: PMC9879135 DOI: 10.3389/fimmu.2022.1090358] [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: 11/05/2022] [Accepted: 12/15/2022] [Indexed: 01/15/2023] Open
Abstract
Background Trauma-induced immune dysfunction has been a major barrier to achieving reduced mortality, which is poorly understood. Autophagy is a crucial catabolic mechanism of immune cells during times of stress. Few studies have investigated the immune regulatory effects induced by autophagy after trauma. Here, we use single-cell transcriptomics analysis in a major trauma cohort to demonstrate the dominant role of autophagy in innate immune cells during the early stages of major trauma. Method Single-cell transcriptional profiling of peripheral blood mononuclear cells (PBMCs) was performed, which were sampled from three control participants and five major trauma patients within 6 hours of injury. In detail, after single-cell RNA-sequence data processing, cell type annotation and cluster marker identification were performed. A genetic toolbox with 604 autophagy-related genes was used to monitor the autophagy levels in immune cells. In addition, all transcriptome RNA sequencing data obtained from PBMCs in a cohort of 167 major trauma patients were downloaded from gene expression omnibus (GEO) datasets (GSE36809). Key deregulated biological processes and important autophagic hub genes involved in immune cells were identified by weighted gene co-expression network analysis and gene ontology enrichment analysis. Results A total of 20,445 differentially expressed genes were identified and five co-expression modules were constructed. Enrichment analysis indicated that activated autophagy is the most important biological process during the early stages of major trauma, and JMY (autophagy-related genes) were identified as hub genes. The single-cell transcriptional profiling of PBMCs demonstrated that all components of adaptive immune cells were significantly decreased, whereas components of innate immune cells (monocytes and neutrophils) were significantly increased in major trauma patients compared with control participants. Activated autophagy was detected in monocytes and neutrophils by monitoring the dynamic transcriptional signature of the autophagy-related genetic toolbox. Biological process analysis shows that antigen uptake, processing presentation, and major histocompatibility complex (MHC) class II protein complex assembly pathways were up-regulated in autophagy-positive monocytes, whereas antigen processing and presentation of endogenous antigen and type I interferon signaling pathways were up-regulated in autophagy-positive neutrophils during the early stages of major trauma. Conclusion Our study demonstrated that autophagy is a biological process crucial to the development of immune disorders in the early stages of major trauma. Furthermore, the results of our study generated a comprehensive single-cell immune landscape for major trauma patients, in which we determined that autophagy profoundly affects the main functions of innate immune cells and provides insight into the cellular basis of immune dysregulation after major trauma.
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Schönfelder J, Seibold T, Morawe M, Sroka R, Schneider N, Cai J, Golomejic J, Schütte L, Armacki M, Huber-Lang M, Kalbitz M, Seufferlein T, Eiseler T. Endothelial Protein kinase D1 is a major regulator of post-traumatic hyperinflammation. Front Immunol 2023; 14:1093022. [PMID: 36936923 PMCID: PMC10017463 DOI: 10.3389/fimmu.2023.1093022] [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: 11/08/2022] [Accepted: 02/15/2023] [Indexed: 03/06/2023] Open
Abstract
Trauma is a major cause of death worldwide. The post-traumatic immune response culminates in the release of pro-inflammatory mediators, translating in the infiltration of neutrophils (PMNs) at injury sites. The extent of this inflammation is determined by multiple factors, such as PMN adhesion to the endothelium, transendothelial migration, endothelial barrier integrity as well as PMN swarming, mass infiltration and activation. This process is initiated by secondary lipid mediators, such as leukotriene B4 (LTB4). We here provide evidence that Protein kinase D1 (PRKD1) in endothelial cells is implicated in all these processes. Endothelial PRKD1 is activated by pro-inflammatory stimuli and amplifies PMN-mediated inflammation by upregulation of cytokine and chemokines as well as adhesion molecules, such as ICAM-1, VCAM-1 and E-selectin. This induces enhanced PMN adhesion and trans-migration. PRKD1 activation also destabilizes endothelial VE-cadherin adhesion complexes and thus the endothelial barrier, fostering PMN infiltration. We even describe a yet unrecognized PRKD1-dependant mechanism to induce biosynthesis of the PMN-swarming mediator LTB4 directed via intercellular communication through small extracellular vesicles (sEVs) and enhanced CXCL8 secretion from activated endothelial cells. These endothelial sEVs transfer the LTB4 biosynthesis enzyme LTA4 hydrolase (LTA4H) to prime PMNs, while initiating biosynthesis also requires additional signals, like CXCL8. We further demonstrate the respective LTA4H-positive sEVs in the serum of polytrauma patients, peaking 12 h post injury. Therefore, PRKD1 is a key regulator in the coordinated communication of the endothelium with PMNs and a vital signaling node during post-traumatic inflammation.
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Affiliation(s)
| | - Tanja Seibold
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Mareen Morawe
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Robert Sroka
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Nora Schneider
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Jierui Cai
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Josip Golomejic
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Lena Schütte
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Milena Armacki
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital Ulm, Ulm, Germany
| | - Miriam Kalbitz
- Department of Traumatology, Hand-, Plastic, and Reconstructive Surgery, University Hospital Ulm, Ulm, Germany
| | - Thomas Seufferlein
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
- *Correspondence: Tim Eiseler, ; Thomas Seufferlein,
| | - Tim Eiseler
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
- *Correspondence: Tim Eiseler, ; Thomas Seufferlein,
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Pivac N, Vuic B, Sagud M, Nedic Erjavec G, Nikolac Perkovic M, Konjevod M, Tudor L, Svob Strac D, Uzun S, Kozumplik O, Uzun S, Mimica N. PTSD, Immune System, and Inflammation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1411:225-262. [PMID: 36949313 DOI: 10.1007/978-981-19-7376-5_11] [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
Posttraumatic stress disorder (PTSD) is a severe trauma and stress-related disorder associated with different somatic comorbidities, especially cardiovascular and metabolic disorders, and with chronic low-grade inflammation. Altered balance of the hypothalamic-pituitary-adrenal (HPA) axis, cytokines and chemokines, C-reactive protein, oxidative stress markers, kynurenine pathways, and gut microbiota might be involved in the alterations of certain brain regions regulating fear conditioning and memory processes, that are all altered in PTSD. In addition to the HPA axis, the gut microbiota maintains the balance and interaction of the immune, CNS, and endocrine pathways forming the gut-brain axis. Disbalance in the HPA axis, gut-brain axis, oxidative stress pathways and kynurenine pathways, altered immune signaling and disrupted homeostasis, as well as the association of the PTSD with the inflammation and disrupted cognition support the search for novel strategies for treatment of PTSD. Besides potential anti-inflammatory treatment, dietary interventions or the use of beneficial bacteria, such as probiotics, can potentially improve the composition and the function of the bacterial community in the gut. Therefore, bacterial supplements and controlled dietary changes, with exercise, might have beneficial effects on the psychological and cognitive functions in patients with PTSD. These new treatments should be aimed to attenuate inflammatory processes and consequently to reduce PTSD symptoms but also to improve cognition and reduce cardio-metabolic disorders associated so frequently with PTSD.
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Affiliation(s)
- Nela Pivac
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia.
| | - Barbara Vuic
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Marina Sagud
- Department of Psychiatry, University Hospital Center Zagreb, Zagreb, Croatia
- University of Zagreb School of Medicine, Zagreb, Croatia
| | - Gordana Nedic Erjavec
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Matea Nikolac Perkovic
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Marcela Konjevod
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Lucija Tudor
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Dubravka Svob Strac
- Division of Molecular Medicine, Laboratory for Molecular Neuropsychiatry, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Suzana Uzun
- University of Zagreb School of Medicine, Zagreb, Croatia
- University Psychiatric Hospital Vrapce, Zagreb, Croatia
| | | | - Sandra Uzun
- Department for Anesthesiology, Reanimatology, and Intensive Care, University Hospital Center Zagreb, Zagreb, Croatia
| | - Ninoslav Mimica
- University of Zagreb School of Medicine, Zagreb, Croatia
- University Psychiatric Hospital Vrapce, Zagreb, Croatia
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Gilstrap SR, Hobson JM, Owens MA, White DM, Sammy MJ, Ballinger S, Sorge RE, Goodin BR. Mitochondrial reactivity following acute exposure to experimental pain testing in people with HIV and chronic pain. Mol Pain 2023; 19:17448069231195975. [PMID: 37542365 PMCID: PMC10467217 DOI: 10.1177/17448069231195975] [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: 04/24/2023] [Revised: 07/06/2023] [Accepted: 08/03/2023] [Indexed: 08/06/2023] Open
Abstract
Background: Physical stressors can cause a physiological response that can contribute to an increase in mitochondrial dysfunction and Mitochondrial DNA damage (mtDNA damage). People living with HIV (PWH) are more likely to suffer from chronic pain and may be more susceptible to mitochondrial dysfunction following exposure to a stressor. We used Quantitative Sensory Testing (QST) as an acute painful stressor in order to investigate whether PWH with/without chronic pain show differential mitochondrial physiological responses. Methods: The current study included PWH with (n = 26), and without (n = 29), chronic pain. Participants completed a single session that lasted approximately 180 min, including QST. Blood was taken prior to and following the QST battery for assays measuring mtDNA damage, mtDNA copy number, and mtDNA damage-associated molecular pattern (DAMP) levels (i.e., ND1 and ND6). Results: We examined differences between those with and without pain on various indicators of mitochondrial reactivity following exposure to QST. However, only ND6 and mtDNA damage were shown to be statistically significant between pain groups. Conclusion: PWH with chronic pain showed greater mitochondrial reactivity to laboratory stressors. Consequently, PWH and chronic pain may be more susceptible to conditions in which mitochondrial damage/dysfunction play a central role, such as cognitive decline.
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Affiliation(s)
- Shannon R Gilstrap
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Joanna M Hobson
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Michael A Owens
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, Baltimore, MD, USA
| | - Dyan M White
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Melissa J Sammy
- Bio-Analytical Research Biology (BARB) Core, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Scott Ballinger
- Bio-Analytical Research Biology (BARB) Core, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert E Sorge
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Burel R Goodin
- Department of Anesthesiology, Washington University, St Louis, MO, USA
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ALTERATION OF AKT1-GSK3Β SIGNALING PATHWAY IN TRAUMA HEMORRHAGIC SHOCK PATIENTS. Shock 2022; 58:484-491. [PMID: 36548639 DOI: 10.1097/shk.0000000000002012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ABSTRACT Trauma hemorrhagic shock (THS) is a major cause of death and disability worldwide. It is the leading cause of death with or without sepsis in approximately 50% of patients. In THS, there is an incidence of cellular apoptosis, which contributes majorly to cellular dysfunction, organ failure, and mortality. The Akt (protein kinase B) isoform, Akt1, and glycogen synthase kinase 3β (Akt1-GSK3β) signaling pathway controls cell survival and apoptosis. Deleterious consequences of alteration of this signaling system might lead to inflammation, cytokine storm, and other diseases. Hence, in the present study, we investigated the role of this signaling system by measuring the phosphorylation levels of Akt1-GSK3β. Here, we demonstrated that the downregulation of pAkt1 and upregulation of pGSK3β in THS were significantly associated with the severity of the shock, apoptosis of immune cells, altered glucose metabolism, inflammation, cytokine storm, hemostasis, and acidosis, causing mortality with or without sepsis. For the first time, this study shows that a dysregulated pAkt1-GSK3β pathway causes contrasting cell fates in THS, leading to trauma pathology. Hence, the delineation and the implications of this signaling system may provide a new important target for the treatment of THS. In addition, Akt activation may become a potential strategy for increasing the survival rate following THS.
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Muacevic A, Adler JR. Mitogen Activated Protein Kinase (MAPK) Activation, p53, and Autophagy Inhibition Characterize the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Spike Protein Induced Neurotoxicity. Cureus 2022; 14:e32361. [PMID: 36514706 PMCID: PMC9733976 DOI: 10.7759/cureus.32361] [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] [Accepted: 12/08/2022] [Indexed: 12/13/2022] Open
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein and prions use common pathogenic pathways to induce toxicity in neurons. Infectious prions rapidly activate the p38 mitogen activated protein kinase (MAPK) pathway, and SARS-CoV-2 spike proteins rapidly activate both the p38 MAPK and c-Jun NH2-terminal kinase (JNK) pathways through toll-like receptor signaling, indicating the potential for similar neurotoxicity, causing prion and prion-like disease. In this review, we analyze the roles of autophagy inhibition, molecular mimicry, elevated intracellular p53 levels and reduced Wild-type p53-induced phosphatase 1 (Wip1) and dual-specificity phosphatase (DUSP) expression in neurons in the disease process. The pathways induced by the spike protein via toll-like receptor activation induce both the upregulation of PrPC (the normal isoform of the prion protein, PrP) and the expression of β amyloid. Through the spike-protein-dependent elevation of p53 levels via β amyloid metabolism, increased PrPC expression can lead to PrP misfolding and impaired autophagy, generating prion disease. We conclude that, according to the age of the spike protein-exposed patient and the state of their cellular autophagy activity, excess sustained activity of p53 in neurons may be a catalytic factor in neurodegeneration. An autoimmune reaction via molecular mimicry likely also contributes to neurological symptoms. Overall results suggest that neurodegeneration is in part due to the intensity and duration of spike protein exposure, patient advanced age, cellular autophagy activity, and activation, function and regulation of p53. Finally, the neurologically damaging effects can be cumulatively spike-protein dependent, whether exposure is by natural infection or, more substantially, by repeated mRNA vaccination.
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Allegra A, Mirabile G, Ettari R, Pioggia G, Gangemi S. The Impact of Curcumin on Immune Response: An Immunomodulatory Strategy to Treat Sepsis. Int J Mol Sci 2022; 23:ijms232314710. [PMID: 36499036 PMCID: PMC9738113 DOI: 10.3390/ijms232314710] [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: 09/27/2022] [Revised: 11/12/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Primary and secondary immunodeficiencies cause an alteration in the immune response which can increase the rate of infectious diseases and worsened prognoses. They can also alter the immune response, thus, making the infection even worse. Curcumin is the most biologically active component of the turmeric root and appears to be an antimicrobial agent. Curcumin cooperates with various cells such as macrophages, dendritic cells, B, T, and natural killer cells to modify the body's defence capacity. Curcumin also inhibits inflammatory responses by suppressing different metabolic pathways, reduces the production of inflammatory cytokines, and increases the expression of anti-inflammatory cytokines. Curcumin may also affect oxidative stress and the non-coding genetic material. This review analyses the relationships between immunodeficiency and the onset of infectious diseases and discusses the effects of curcumin and its derivatives on the immune response. In addition, we analyse some of the preclinical and clinical studies that support its possible use in prophylaxis or in the treatment of infectious diseases. Lastly, we examine how nanotechnologies can enhance the clinical use of curcumin.
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Affiliation(s)
- Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy
- Correspondence:
| | - Giuseppe Mirabile
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy
| | - Roberta Ettari
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, 98100 Messina, Italy
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), 98164 Messina, Italy
| | - Sebastiano Gangemi
- Allergy and Clinical Immunology Unit, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
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Karateev AE, Nesterenko VA, Makarov MA, Lila AM. Chronic post-traumatic pain: rheumatological and orthopedic aspects. RHEUMATOLOGY SCIENCE AND PRACTICE 2022. [DOI: 10.47360/1995-4484-2022-526-537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Trauma causes a complex local and systemic reaction of the macroorganism, the consequences of which can be various functional, neurological and psychoemotional disorders. One of the most painful complications of injuries of the musculoskeletal system is chronic post-traumatic pain (CPTP), which occurs, depending on the severity of the damage, in 10–50% of cases. The pathogenesis of this syndrome is multifactorial and includes the development of chronic inflammation, degenerative changes (fibrosis, angiogenesis, heterotopic ossification), pathology of the muscular and nervous systems, neuroplastic changes leading to the development of central sensitization, as well as depression, anxiety and catastrophization. Risk factors for CPTP should be considered the severity of injury, comorbid diseases and conditions (in particular, obesity), stress and serious trauma-related experiences (within the framework of post-traumatic stress disorder), the development of post-traumatic osteoarthritis and chronic tendopathy, genetic predisposition, deficiencies in treatment and rehabilitation in the early period after injury. To date, there is no clear system of prevention and treatment of CPTP. Considering the pathogenesis of this suffering, adequate anesthesia after injury, active anti–inflammatory therapy (including local injections of glucocorticoids), the use of hyaluronic acid, slow-acting symptomatic agents and autologous cellular preparations – platelet-riched plasma, mesenchymal stem cells, etc. are of fundamental importance. However, therapeutic and surgical methods of CPTP control require further study
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Affiliation(s)
| | | | | | - A. M. Lila
- V.A. Nasonova Research Institute of Rheumatology; Russian Medical Academy of Continuous Professional Education of the Ministry of Healthcare of the Russian Federation
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van Romunde SHM, Vergouwen DPC, Iacovello D, Roelen DL, Verdijk RM, Ten Berge JCEM, Pertile G, Schreurs MWJ, van Meurs JC. Destructive inflammatory reaction after an autologous retinal pigment epithelium and choroid transplantation: no detection of an auto-immune response. J Ophthalmic Inflamm Infect 2022; 12:27. [PMID: 36018390 PMCID: PMC9418395 DOI: 10.1186/s12348-022-00305-2] [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: 03/13/2022] [Accepted: 08/11/2022] [Indexed: 11/21/2022] Open
Abstract
Purpose Five patients who underwent uncomplicated retinal pigment epithelium (RPE)-choroid transplantation for neovascular age-related macular degeneration developed a destructive inflammatory reaction causing subretinal fluid accumulation and extensive RPE atrophy in the graft. We hypothesized that this inflammation could be caused by an auto-immune response against the graft, resulting in circulating auto-antibodies. The aim of our study was to examine a potential autoimmune origin, which would allow a more targeted therapy approach. Methods Five above-mentioned patients and four control groups of five patients each were included: 1) after uncomplicated RPE-choroid transplantation, 2) after full macular translocation, 3) treated with anti-vascular endothelial growth factor, and 4) healthy controls. Histopathology of rejected graft tissue was performed using standard procedures. Presence of RPE-choroid autoantibodies in serum was examined by indirect immunofluorescence and Western blot, and human leukocyte antigen (HLA) typing was performed. Results Histopathological examination of an explanted graft showed infiltration of T-lymphocytes and macrophages in the choroid and RPE, and an increased number of B-cell lymphocytes were found in the choroid. Indirect immunofluorescence showed weak RPE-choroid autoantibody immunoreactivity in three patients of different groups. Western blot did not show specific RPE-choroid autoantibody immunoreactivity and no difference of HLA genotypes between the groups was found. Conclusions Although local mononuclear inflammatory cell infiltration and a high number of B-lymphocytes were observed in an explanted graft, we did not detect serological evidence of an autoimmune origin of the postoperative inflammation using direct immunofluorescence and Western Blot. Alternatively, the graft failure may have been caused by local innate inflammation, triggered by breakdown of tolerance. Based on our current findings of this small study group, we have no rationale to pursue therapies targeted towards autoreactive graft failure. More research is needed to confirm our findings. Supplementary Information The online version contains supplementary material available at 10.1186/s12348-022-00305-2.
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Affiliation(s)
- Saskia H M van Romunde
- Department of Vitreoretinal surgery, Rotterdam Eye Hospital, Schiedamse Vest 180 - 3011BH, Rotterdam, the Netherlands.
| | - Daphne P C Vergouwen
- Department of Ophthalmology, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands.,Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
| | - Daniela Iacovello
- Department of Ophthalmology, IRCCS Sacro Cuore Don Calabria, Viale Rizzardi, 437024, Negrar, Italy
| | - Dave L Roelen
- Department of Immunology, Leiden Universitary Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands
| | - Robert M Verdijk
- Department of Vitreoretinal surgery, Rotterdam Eye Hospital, Schiedamse Vest 180 - 3011BH, Rotterdam, the Netherlands.,Department of Pathology, Section Ophthalmic Pathology, Erasmus MC, University Medical Center, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands.,Department of Pathology, Leiden Universitary Medical Center, Albinusdreef 2, 2333, ZA, Leiden, the Netherlands
| | - Josianne C E M Ten Berge
- Department of Ophthalmology, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
| | - Grazia Pertile
- Department of Ophthalmology, IRCCS Sacro Cuore Don Calabria, Viale Rizzardi, 437024, Negrar, Italy
| | - Marco W J Schreurs
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
| | - Jan C van Meurs
- Department of Vitreoretinal surgery, Rotterdam Eye Hospital, Schiedamse Vest 180 - 3011BH, Rotterdam, the Netherlands.,Department of Ophthalmology, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
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The Expression Levels and Concentrations of PD-1 and PD-L1 Proteins in Septic Patients: A Systematic Review. Diagnostics (Basel) 2022; 12:diagnostics12082004. [PMID: 36010357 PMCID: PMC9407082 DOI: 10.3390/diagnostics12082004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
Sepsis is a series of life-threatening organ dysfunction caused by an impaired host response to infection. A large number of molecular studies of sepsis have revealed complex interactions between infectious agents and hosts that result in heterogeneous manifestations of sepsis. Sepsis can cause immunosuppression and increase the expression of checkpoint inhibitor molecules, including programmed death protein (PD-1) and programmed death ligand 1 (PD-L1), and thus PD-1 and PD-L1 are thought to be useful as diagnostic and prognostic tools for sepsis. PD-1 is an inhibitor of both adaptive and innate immune responses, and is expressed on activated T lymphocytes, natural killer (NK) cells, B lymphocytes, macrophages, dendritic cells (DCs), and monocytes, whereas PD-L1 is expressed on macrophages, some activated T and B cells, and mesenchymal stem cells as well as various non-hematopoietic cells. This systematic review aims to assess the PD-1 and PD-L1 protein expression levels and concentrations in septic and other infectious patients.
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Ahmed IA, Mikail MA, Zamakshshari NH, Mustafa MR, Hashim NM, Othman R. Trends and challenges in phytotherapy and phytocosmetics for skin aging. Saudi J Biol Sci 2022; 29:103363. [PMID: 35813113 PMCID: PMC9260296 DOI: 10.1016/j.sjbs.2022.103363] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/23/2022] [Accepted: 06/20/2022] [Indexed: 11/26/2022] Open
Abstract
Free radicals, oxidative stress, and inflammation contribute to the etiology of most chronic diseases. Natural products can be incorporated into cosmetics, cosmeceuticals, and nutricosmetics to tackle inflammation-related diseases. The use of alternative green extraction solvents such as natural deep eutectic solvents and electrochemically reduced water is trending. Delivery systems are important for the enhancement of the bioavailability, stability, solubility, and controlled release profile of the bioactives.
Oxidative stress and inflammation mostly contribute to aging and age-related conditions including skin aging. The potential of natural products in the form of naturally-derived cosmetics, cosmeceuticals, and nutricosmetics have, however, not been fully harnessed. This review, thus, critically analyzes the potential roles of natural products in inflammation-related skin aging diseases due to the increasing consumers’ concerns and demands for efficacious, safe, natural, sustainable, and religiously permitted alternatives to synthetic products. The information and data were collated from various resources and literature databases such as PubMed, Science Direct, Wiley, Springer, Taylor and Francis, Scopus, Inflibnet, Google, and Google Scholar using relevant keywords and Medical Subject Headings (MeSH). The role of green extraction solvents as promising alternatives is also elucidated. The potential enhancements of the bioavailability, stability, solubility and controlled release profile of the bioactives using different delivery systems are also presented. The current potential global market value, motivators, drivers, trends, challenges, halal, and other regulatory certifications for cosmeceuticals and nutricosmetics are equally discussed. The adoption of the suggested extractions and delivery systems would enhance the stability, bioavailability, and target delivery of the bioactives.
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Pantalone D, Chiara O, Henry S, Cimbanassi S, Gupta S, Scalea T. Facing Trauma and Surgical Emergency in Space: Hemorrhagic Shock. Front Bioeng Biotechnol 2022; 10:780553. [PMID: 35845414 PMCID: PMC9283715 DOI: 10.3389/fbioe.2022.780553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 04/22/2022] [Indexed: 11/16/2022] Open
Abstract
Although the risk of trauma in space is low, unpredictable events can occur that may require surgical treatment. Hemorrhage can be a life-threatening condition while traveling to another planet and after landing on it. These exploration missions call for a different approach than rapid return to Earth, which is the policy currently adopted on the International Space Station (ISS) in low Earth orbit (LEO). Consequences are difficult to predict, given the still scarce knowledge of human physiology in such environments. Blood loss in space can deplete the affected astronaut’s physiological reserves and all stored crew supplies. In this review, we will describe different aspects of hemorrhage in space, and by comparison with terrestrial conditions, the possible solutions to be adopted, and the current state of the art.
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Affiliation(s)
- D. Pantalone
- Department of Experimental and Clinical Medicine, Fellow of the American College of Surgeons, Core Board and Head for Studies on Traumatic Events and Surgery in the European Space Agency-Topical Team on “Tissue Healing in Space Techniques for Promoting and Monitoring Tissue Repair and Regeneration” for Life Science Activities Agency, Assistant Professor in General Surgery, Specialist in Vascular Surgery, Emergency Surgery Unit–Trauma Team, Emergency Department–Careggi University Hospital, University of Florence, Florence, Italy
- *Correspondence: D. Pantalone,
| | - O. Chiara
- Fellow of the American College of Surgeons, Director of General Surgery–Trauma Team, ASST GOM Grande Ospedale Metropolitano Niguarda, Professor of Surgery, University of Milan, Milan, Italy
| | - S. Henry
- Fellow of the American College of Surgeons, Director Division of Wound Healing and Metabolism, R Adams Cowley Shock Trauma Center University of Maryland, Baltimore, MD, United States
| | - S. Cimbanassi
- Fellow of the American College of Surgeons, EMDM, Vice Director of General Surgery-Trauma Team, ASST GOM Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - S. Gupta
- Fellow of the American College of Surgeons, R Adams Cowl y Shock Trauma Center, University of Maryland, Baltimore, MD, United States
| | - T. Scalea
- Fellow of the American College of Surgeons, The Honorable Francis X. Kelly Distinguished Professor of Trauma Surgery.Physician-in-Chief, R Adams Cowley Shock Trauma Center, System Chief for Critical Care Services, University of Maryland Medical System, University of Maryland, Baltimore, MD, United States
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Halvachizadeh S, Kalbas Y, Teuben MPJ, Teuber H, Cesarovic N, Weisskopf M, Cinelli P, Pape HC, Pfeifer R. Effects of Occult Hypoperfusion on Local Circulation and Inflammation - An Analysis in a Standardized Polytrauma Model. Front Immunol 2022; 13:894270. [PMID: 35799796 PMCID: PMC9254728 DOI: 10.3389/fimmu.2022.894270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
IntroductionOccult hypoperfusion (OH) is defined as persistent lactic acidosis despite normalization of vital parameters following trauma. The aim of this study was to analyze the association of occult hypoperfusion with local circulation and inflammation of injured soft tissue in a porcine polytrauma model.MethodsThis experimental study was performed with male landrace pigs who suffered a standardized polytrauma, including a femoral fracture, blunt chest trauma, liver laceration and a mean arterial pressure (MAP) controlled hemorrhagic shock. One hour after induction of trauma, the animals were resuscitated with retrograde femoral nailing, liver packing and volume replacement. Animals were stratified into Group Norm (normalizing lactate levels after resuscitation) and Group occult hypoperfusion (OH) (persistent lactate levels above 2 mmol/l with normalizing vital parameters after resuscitation). Local circulation (oxygen saturation, hemoglobin amount, blood flow) was measured with optical sensors at the subcutaneous soft tissue at the fractured extremity as well as at the stomach and colon. Local inflammatory parameters [interleukin (IL) 6, 8, 10, and heat shock protein (HSP)] were analyzed in the subcutaneous tissue of the fractured extremity.ResultsGroup Norm (n = 19) and Group OH (n = 5) were comparable in baseline vital and laboratory parameters. The shock severity and total amount of blood loss were comparable among Group Norm and Group OH. Following resuscitation Group OH had significantly lower local relative hemoglobin amount at the injured soft tissue of the fractured extremity when compared with Group Norm (39.4, SD 5.3 vs. 63.9, SD 27.6 A.U., p = 0.031). The local oxygenation was significantly lower in Group OH compared to Group Norm (60.4, SD 4.6 vs. 75.8, SD 12.8, p = 0.049). Local IL-6 in the fatty tissue was significantly higher in Group OH (318.3, SD 326.6 [pg/ml]) when compared with Group Norm (73.9,SD 96.3[pg/ml], p = 0.03). The local circulation at the abdominal organs was comparable in both groups.ConclusionOH is associated with decreased local circulation and increased local inflammation at the injured soft tissue of the extremity in polytrauma. OH might reflect the severity of local soft tissue injuries, and guide treatment strategies.
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Affiliation(s)
- Sascha Halvachizadeh
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
- Harald Tscherne Research Laboratory, University of Zurich, Zurich, Switzerland
- *Correspondence: Sascha Halvachizadeh,
| | - Yannik Kalbas
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
- Harald Tscherne Research Laboratory, University of Zurich, Zurich, Switzerland
| | | | - Henrik Teuber
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
| | - Nikola Cesarovic
- Department of Health Sciences and Technology, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Miriam Weisskopf
- Center for Surgical Research, University Hospital Zurich, University Zurich, Zurich, Switzerland
| | - Paolo Cinelli
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
- Harald Tscherne Research Laboratory, University of Zurich, Zurich, Switzerland
| | - Hans-Christoph Pape
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
- Harald Tscherne Research Laboratory, University of Zurich, Zurich, Switzerland
| | - Roman Pfeifer
- Department of Trauma, University Hospital Zurich, Zurich, Switzerland
- Harald Tscherne Research Laboratory, University of Zurich, Zurich, Switzerland
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Noack L, Bundkirchen K, Xu B, Gylstorff S, Zhou Y, Köhler K, Jantaree P, Neunaber C, Nowak AJ, Relja B. Acute Intoxication With Alcohol Reduces Trauma-Induced Proinflammatory Response and Barrier Breakdown in the Lung via the Wnt/β-Catenin Signaling Pathway. Front Immunol 2022; 13:866925. [PMID: 35663960 PMCID: PMC9159919 DOI: 10.3389/fimmu.2022.866925] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Trauma is the third leading cause of mortality worldwide. Upon admission, up to 50% of traumatized patients are acutely intoxicated with alcohol, which might lead to aberrant immune responses. An excessive and uncontrolled inflammatory response to injury is associated with damage to trauma-distant organs. We hypothesize that, along with inflammation-induced apoptosis, the activation of the Wnt/β-catenin signaling pathway would cause breakdown of the lung barrier and the development of lung injury after trauma. It remains unclear whether ethanol intoxication (EI) prior to trauma and hemorrhagic shock will attenuate inflammation and organ injury. Methods In this study, 14 male C57BL/6J mice were randomly assigned to two groups and exposed either to EtOH or to NaCl as a control by an oral gavage before receiving a femur fracture (Fx) and hemorrhagic shock, followed by resuscitation (THFx). Fourteen sham animals received either EtOH or NaCl and underwent surgical procedures without THFx induction. After 24 h, oil red O staining of fatty vacuoles in the liver was performed. Histological lung injury score (LIS) was assessed to analyze the trauma-induced RLI. Gene expression of Cxcl1, Il-1β, Muc5ac, Tnf, and Tnfrsf10b as well as CXCL1, IL-1β, and TNF protein levels in the lung tissue and bronchoalveolar lavage fluid were determined by RT-qPCR, ELISA, and immunohistological analyses. Infiltrating polymorphonuclear leukocytes (PMNLs) were examined via immunostaining. Apoptosis was detected by activated caspase-3 expression in the lung tissue. To confirm active Wnt signaling after trauma, gene expression of Wnt3a and its inhibitor sclerostin (Sost) was determined. Protein expression of A20 and RIPK4 as possible modulators of the Wnt signaling pathway was analyzed via immunofluorescence. Results Significant fatty changes in the liver confirmed the acute EI. Histopathology and decreased Muc5ac expression revealed an increased lung barrier breakdown and concomitant lung injury after THFx versus sham. EI prior trauma decreased lung injury. THFx increased not only the gene expression of pro-inflammatory markers but also the pulmonary infiltration with PMNL and apoptosis versus sham, while EI prior to THFx reduced those changes significantly. EI increased the THFx-reduced gene expression of Sost and reduced the THFx-induced expression of Wnt3a. While A20, RIPK4, and membranous β-catenin were significantly reduced after trauma, they were enhanced upon EI. Conclusion These findings suggest that acute EI alleviates the uncontrolled inflammatory response and lung barrier breakdown after trauma by suppressing the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Laurens Noack
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
| | | | - Baolin Xu
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany.,Trauma Department, Hannover Medical School, Hannover, Germany
| | - Severin Gylstorff
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
| | - Yuzhuo Zhou
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany.,Trauma Department, Hannover Medical School, Hannover, Germany
| | - Kernt Köhler
- Institute of Veterinary Pathology, Justus Liebig University Giessen, Giessen, Germany
| | - Phatcharida Jantaree
- Institute of Experimental Internal Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | | | - Aleksander J Nowak
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
| | - Borna Relja
- Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
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Toll-like receptors and damage-associated molecular patterns in the pathogenesis of heart transplant rejection. Mol Cell Biochem 2022; 477:2841-2850. [PMID: 35678986 DOI: 10.1007/s11010-022-04491-4] [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: 02/21/2022] [Accepted: 05/31/2022] [Indexed: 10/18/2022]
Abstract
Significant strides have been made in our understanding of the immune system and its role in cardiac transplant rejection. Despite the growing knowledge of immune responses, the mortality rate following cardiac transplantation remains grim. Related to procedural and pathological complications, toll-like receptor (TLR) and damage-associated molecular pattern (DAMP) signaling is the most direct and earliest interface between tissue integration and the innate immune response. This in turn can activate an adaptive immune response that further damages myocardial tissue. Furthermore, relevant literature on the status of DAMPs in the context of heart-transplantation remains limited, warranting further attention in clinical and translational research. This review aims to critically appraise the perspectives, advances, and challenges on DAMP-mediated innate immune response in the immune-mediated rejection of cardiac transplantation. Detailed analysis of the influence of TLR and DAMP signaling in mounting the immune response against the transplanted heart holds promise for improving outcomes through early detection and prevention of varied forms of organ rejection.
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Halvachizadeh S, Klingebiel FKL, Pfeifer R, Gosteli M, Schuerle S, Cinelli P, Zelle BA, Pape HC. The local soft tissue status and the prediction of local complications following fractures of the ankle region. Injury 2022; 53:1789-1795. [PMID: 35382943 DOI: 10.1016/j.injury.2022.03.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/10/2022] [Accepted: 03/22/2022] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Well-known risk factors (RF) for soft tissue complications following surgical treatment of fracture of the ankle region include diabetes, smoking, and the local soft tissue status. A weighted analysis might provide a risk profile that guides the surgical treatment strategy. The aim of this meta-analysis was to provide a risk profile for soft tissue complications following closed fractures of the ankle region. METHODS This review provides a meta-analysis of studies that investigate potential risk factors for complications in fractures of the ankle region. INCLUSION CRITERIA Original articles that were published between 2000 and 2020 in English or German language that calculated odds ratios (OR) of RF for soft tissue complications. Further, this study only includes articles that investigated fractures of the ankle region including pilon fracture, calcaneal fractures, and fractures of the malleoli. This study excluded articles that provide exploratory analyses, narrative reviews, and case reports. RF were stratified as patient specific systemic RF (PSS), patient specific local RF (PSL), and non-patient specific RF (NPS). PSS RF includes comorbidities, American society of anaesthesiology (ASA), requirement of medication, additional injuries, and smoking or substance abuse. PSL RF includes soft tissue status, wounds, and associated complications. NPS RF includes duration of surgery, staged procedure, or time to definitive surgery. Random effect (RE) models were utilized to summarize the effect measure (OR) for each group or specific RF. RESULTS Out of 1352 unique articles, 34 were included for quantitative analyses. Out of 370 complications, the most commonly assessed RF were comorbidities (34.6%). Local soft tissue status accounted for 7.5% of all complications. The overall rate for complication was 10.9% (standard deviation, SD 8.7%). PSS RF had an OR of 1.04 (95%CI 1.01 to 1.06, p = 0.006), PSL an OR of 1.79 (95% 1.28 to 2.49, p = 0.0006), and NPS RF an OR of 1.01 (95%CI 0.97 to 1.05, p = 0.595). Additional injuries did not predict complications (OR 1.23, 95%CI 0.44 to 3.45, p = 0.516). The most predictive RF were open fracture (OR 3.47, 95%CI 1.64 to 7.34, p < 0.001), followed by local tissue damage (OR 3.05, 95%CI 1.23 to 40.92, p = 0.04), and diabetes (OR 2.3, 95%CI 1.1 to 4.79, p = 0.26). CONCLUSION Among all RFs for regional soft tissue complications, the most predictive is the local soft tissue status, while additional injuries or NPS RF were less predictive. The soft tissue damage can be quantified and outweighs the cofactors described in previous publications. The soft tissue status appears to have a more important role in the decision making of the treatment strategy when compared with comorbidities such as diabetes.
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Affiliation(s)
- Sascha Halvachizadeh
- Department of Trauma, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland; Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland.
| | - Felix Karl Ludwig Klingebiel
- Department of Trauma, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland; Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland
| | - Roman Pfeifer
- Department of Trauma, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland; Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland
| | - Martina Gosteli
- Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland
| | - Simone Schuerle
- Institute for translational medicine, Department of Health Science & Technology, ETH Zurich, Rämistrasse 101, Zürich 8092, Switzerland
| | - Paolo Cinelli
- Department of Trauma, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland; Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland
| | - Boris A Zelle
- Department of Orthopaedics, UT Health San Antonio, San Antonio, Texas TX 78229, United States
| | - Hans-Christoph Pape
- Department of Trauma, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland; Harald Tscherne laboratory for orthopaedic and trauma research, University of Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland
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Krocker JD, Lee KH, Henriksen HH, Wang YWW, Schoof EM, Karvelsson ST, Rolfsson Ó, Johansson PI, Pedroza C, Wade CE. Exploratory Investigation of the Plasma Proteome Associated with the Endotheliopathy of Trauma. Int J Mol Sci 2022; 23:6213. [PMID: 35682894 PMCID: PMC9181752 DOI: 10.3390/ijms23116213] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The endotheliopathy of trauma (EoT) is associated with increased mortality following injury. Herein, we describe the plasma proteome related to EoT in order to provide insight into the role of the endothelium within the systemic response to trauma. METHODS 99 subjects requiring the highest level of trauma activation were included in the study. Enzyme-linked immunosorbent assays of endothelial and catecholamine biomarkers were performed on admission plasma samples, as well as untargeted proteome quantification utilizing high-performance liquid chromatography and tandem mass spectrometry. RESULTS Plasma endothelial and catecholamine biomarker abundance was elevated in EoT. Patients with EoT (n = 62) had an increased incidence of death within 24 h at 21% compared to 3% for non-EoT (n = 37). Proteomic analysis revealed that 52 out of 290 proteins were differentially expressed between the EoT and non-EoT groups. These proteins are involved in endothelial activation, coagulation, inflammation, and oxidative stress, and include known damage-associated molecular patterns (DAMPs) and intracellular proteins specific to several organs. CONCLUSIONS We report a proteomic profile of EoT suggestive of a surge of DAMPs and inflammation driving nonspecific activation of the endothelial, coagulation, and complement systems with subsequent end-organ damage and poor clinical outcome. These findings support the utility of EoT as an index of cellular injury and delineate protein candidates for therapeutic intervention.
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Affiliation(s)
- Joseph D. Krocker
- Center for Translational Injury Research, Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (Y.-W.W.W.); (C.E.W.)
| | - Kyung Hyun Lee
- Center for Clinical Research and Evidence-Based Medicine, Department of Pediatrics, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (K.H.L.); (C.P.)
| | - Hanne H. Henriksen
- Center for Endotheliomics CAG, Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, 2200 Copenhagen, Denmark;
| | - Yao-Wei Willa Wang
- Center for Translational Injury Research, Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (Y.-W.W.W.); (C.E.W.)
| | - Erwin M. Schoof
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Lyngby, Denmark;
| | - Sigurdur T. Karvelsson
- Center for Systems Biology, University of Iceland, 101 Reykjavik, Iceland; (S.T.K.); (Ó.R.)
| | - Óttar Rolfsson
- Center for Systems Biology, University of Iceland, 101 Reykjavik, Iceland; (S.T.K.); (Ó.R.)
| | - Pär I. Johansson
- Center for Endotheliomics CAG, Department of Clinical Immunology, Rigshospitalet, & Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark;
| | - Claudia Pedroza
- Center for Clinical Research and Evidence-Based Medicine, Department of Pediatrics, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (K.H.L.); (C.P.)
| | - Charles E. Wade
- Center for Translational Injury Research, Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (Y.-W.W.W.); (C.E.W.)
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Friend SF, Nachnani R, Powell SB, Risbrough VB. C-Reactive Protein: Marker of risk for post-traumatic stress disorder and its potential for a mechanistic role in trauma response and recovery. Eur J Neurosci 2022; 55:2297-2310. [PMID: 33131159 PMCID: PMC8087722 DOI: 10.1111/ejn.15031] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/17/2020] [Accepted: 10/06/2020] [Indexed: 01/08/2023]
Abstract
Increasing evidence indicates that inflammation plays a role in PTSD and stress disorder pathophysiology. PTSD is consistently associated with higher circulating inflammatory protein levels. Rodent models demonstrate that inflammation promotes enduring avoidance and arousal behaviors after severe stressors (e.g., predator exposure and social defeat), suggesting that inflammation may play a mechanistic role in trauma disorders. C-reactive protein (CRP) is an innate acute phase reactant produced by the liver after acute infection and chronic disease. A growing number of investigations report associations with PTSD diagnosis and elevated peripheral CRP, CRP gene mutations, and CRP gene expression changes in immune signaling pathways. CRP is reasonably established as a potential marker of PTSD and trauma exposure, but if and how it may play a mechanistic role is unclear. In this review, we discuss the current understanding of immune mechanisms in PTSD with a particular focus on the innate immune signaling factor, CRP. We found that although there is consistent evidence of an association of CRP with PTSD symptoms and risk, there is a paucity of data on how CRP might contribute to CNS inflammation in PTSD, and consequently, PTSD symptoms. We discuss potential mechanisms through which CRP could modulate enduring peripheral and CNS stress responses, along with future areas of investigation probing the role of CRP and other innate immune signaling factors in modulating trauma responses. Overall, we found that CRP likely contributes to central inflammation, but how it does so is an area for further study.
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Affiliation(s)
- Samantha F. Friend
- Veterans Affairs Center of Excellence for Stress and Mental HealthSan DiegoCAUSA,Department of PsychiatryUniversity of California San DiegoSan DiegoCAUSA
| | - Rahul Nachnani
- Department of PharmacologyPenn State College of MedicineHersheyPAUSA
| | - Susan B. Powell
- Department of PsychiatryUniversity of California San DiegoSan DiegoCAUSA,Research ServiceVA San Diego Healthcare SystemSan DiegoCAUSA
| | - Victoria B. Risbrough
- Veterans Affairs Center of Excellence for Stress and Mental HealthSan DiegoCAUSA,Department of PsychiatryUniversity of California San DiegoSan DiegoCAUSA
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