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Han M, Lin W, Huang S, Lin Z, Li K. Association between plasma metal elements and platelet dysfunction in trauma-induced coagulopathy rat model. J Trace Elem Med Biol 2023; 79:127210. [PMID: 37229983 DOI: 10.1016/j.jtemb.2023.127210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/30/2023] [Accepted: 05/17/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Disorders of metal elements and platelet dysfunction are common in patients with trauma-induced coagulopathy (TIC). AIM The aim of this study was to explore the potential role of plasma metal elements in platelet dysfunction in TIC. METHODS Thirty Sprague-Dawley rats were divided into control, hemorrhage shock (HS) and multiple injury (MI) groups. At timepoints of 0.5 and 3 h after trauma and being documented as HS 0.5 h, HS3 h, MI 0.5 h or MI3 h, blood samples were harvested for inductively coupled plasma mass spectrometer, conventional coagulation function and thromboelastograph. RESULTS The plasma zinc (Zn), vanadium (V) and cadmium (Ca) decreased initially in HS 0.5 h and recovered slightly in HS3 h, whereas their plasma concentrations continued to decrease from beginning till MI3 h (p < 0.05). In HS, plasma Ca, V and nickel were negatively correlated to the time taken to reach the initial formation (R), whereas R was positively correlated to plasms Zn, V, Ca and selenium in MI (p < 0.05). In MI, plasma Ca was positively correlated to maximum amplitude, and plasma V was positively correlated to platelet count (p < 0.05). CONCLUSION The plasma concentrations of Zn, V and Ca appeared to contribute to platelet dysfunction in HS 0.5 h, HS3 h, MI 0.5 h and MI3 h, which were trauma type sensitive.
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Affiliation(s)
- Ming Han
- Department of Microbiology and Immunology, Shantou University Medical College, Shantou, China; Department of Emergency, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, China
| | - Wenhao Lin
- Department of Emergency, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, China
| | - Sunhua Huang
- Department of General Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai, China
| | - Zhexuan Lin
- Bio-analytical Laboratory, Shantou University Medical College, Shantou, China
| | - Kangsheng Li
- Department of Microbiology and Immunology, Shantou University Medical College, Shantou, China.
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Ozan M, Buzdağli Y, Baygutalp NK, Yüce N, Baygutalp F, Bakan E. Serum BDNF and Selenium Levels in Elite Athletes Exposed to Blows. Medicina (B Aires) 2022; 58:medicina58050608. [PMID: 35630025 PMCID: PMC9145651 DOI: 10.3390/medicina58050608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/18/2022] [Accepted: 04/23/2022] [Indexed: 11/21/2022] Open
Abstract
Background and Objectives: The study aimed to investigate the combined acute and long-term effects of exposure to blows and exercise on serum BDNF (brain-derived neurotrophic factor) and selenium levels. Materials and Methods: Serum BDNF and selenium levels were determined in 40 male elite athletes before and after vigorous exercise (training match) with a probability of exposure to blows and in 10 sedentary men subjected to exercise (Astrand running protocol). Results: Serum BDNF levels were found 11.50 ± 3.50 ng/mL before exercise and 14.02 ± 3.15 ng/mL after exercise in the athlete group (p = 0.02), and 12.18 ± 4.55 ng/ mL and 11.74 ± 2.48 ng/ mL before and after exercise in the sedentary group, respectively (p = 0.873). Serum BDNF (pre-exercise, baseline) levels were slightly lower in the athlete group than those in the sedentary group (11.50 ± 3.50 and 12.18 ± 4.55 ng/mL, respectively, p = 0.796). Pre-exercise serum selenium levels in athletes were significantly higher compared to those of sedentary participants (130.53 ± 36.79 and 95.51 ± 20.57 µg/L, respectively, p = 0.011). There was no difference in selenium levels after exercise (124.01 ± 29.96 µg/L) compared to pre-exercise (130.53 ± 36.79 µg/L) in the athlete group (p = 0.386). Similarly, there was no difference in selenium levels after exercise (113.28 ± 25.51 µg/L) compared to pre-exercise (95.51 ± 20.57 µg/L) in the sedentary group (p = 0.251). Conclusions: BDNF results show that even if athletes are exposed to blows, they may be protected from the long-term effects of blows thanks to the protective effect of their non-sedentary lifestyle. Regular exercise may have a protective effect on maintaining serum selenium levels in athletes even exposed to blows chronically.
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Affiliation(s)
- Murat Ozan
- Department of Physical Education and Sports, Kazım Karabekir Education Faculty, Ataturk University, Erzurum 25240, Turkey;
| | - Yusuf Buzdağli
- Department of Physical Education and Sports, Faculty of Sport Sciences, Erzurum Technical University, Erzurum 25240, Turkey;
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, Erzurum 25240, Turkey
- Correspondence: ; Tel.: +90-442-2315231
| | - Neslihan Yüce
- Department of Medical Biochemistry, Faculty of Medicine, Ataturk University, Erzurum 25240, Turkey;
| | - Fatih Baygutalp
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Ataturk University, Erzurum 25240, Turkey;
| | - Ebubekir Bakan
- Department of Biochemistry, Faculty of Medicine, Ağrı İbrahim Çeçen University, Ağrı 04100, Turkey;
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Song Y, Xu L, Jin X, Chen D, Jin X, Xu G. Effect of calcium and magnesium on inflammatory cytokines in accidentally multiple fracture adults: A short-term follow-up. Medicine (Baltimore) 2022; 101:e28538. [PMID: 35029924 PMCID: PMC8735799 DOI: 10.1097/md.0000000000028538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
Calcium (Ca) and magnesium (Mg), which play an important role in several cellular processes, is essential for normal development of the skeleton and maintenance of tissue homeostasis. Deficiency of these elements might delay bone fracture recovery or accelerates bone loss. We aimed to examine whether supplementation of trace element (TE) promotes fracture healing in accidentally fracturing adults by involvement of inflammatory mechanism.A short-term follow-up in clinic was performed. Totally, 117 subjects diagnosed with multiple fractures by traffic accidents were recruited in this study. Serum Ca and Mg levels were measured by inductively coupled plasma atomic emission spectrophotometry. Short-term changes such as serum C-reactive protein, interleukin (IL)-1β, IL-6, and tumor necrosis factor alpha in normal treatment and TE supplement groups were detected by enzyme-linked immunosorbent assay. Student t test and the Spearman correlation were performed to analyze the data.Significantly negative correlations between Ca (r = 0.7032; P < .001) and Mg (r = 0.2719; P < .05) and injury severity score were observed. Serum Ca and Mg were significantly increased at Day 5, 7, and 9 following TE supplements. After treatment, serum C-reactive protein, IL-1β, IL-6, and tumor necrosis factor alpha were significantly reduced whereas cytokine levels of the TE supplement group were found to be lower than that of the normal treatment group after Day 3.These findings suggest that Ca and Mg levels are associated with the injury severity of multiple fractures, and the supplement could reduce the inflammation, which may be beneficial for the bone recovery and disease process.
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Affiliation(s)
- Yongxing Song
- Department of Orthopedics, China Coast Guard Hospital of the People's Armed Police Force, Jiangnan Hospital Affiliated to Jiaxing University, Jiaxing, ZJ, China
| | - Long Xu
- Molecular Pathology Laboratory, Department of Pathology, Institute of Forensic Science, Jiaxing University Medical College, Jiaxing, ZJ, China
| | - Xin Jin
- Molecular Pathology Laboratory, Department of Pathology, Institute of Forensic Science, Jiaxing University Medical College, Jiaxing, ZJ, China
| | - Deqing Chen
- Molecular Pathology Laboratory, Department of Pathology, Institute of Forensic Science, Jiaxing University Medical College, Jiaxing, ZJ, China
| | - Xiuhui Jin
- Department of Immunology and Human Biology, University of Toronto, Toronto, ON, Canada
| | - Guangtao Xu
- Molecular Pathology Laboratory, Department of Pathology, Institute of Forensic Science, Jiaxing University Medical College, Jiaxing, ZJ, China
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Lin W, Han W, Wen K, Huang S, Tang Y, Lin Z, Han M. The Alterations of Copper and Zinc Homeostasis in Acute Appendicitis and the Clinical Significance. Biol Trace Elem Res 2019; 192:116-122. [PMID: 30771140 DOI: 10.1007/s12011-019-01661-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/04/2019] [Indexed: 02/05/2023]
Abstract
Copper (Cu) and zinc (Zn) are involved in inflammatory process. This study was to investigate the clinical significance of Cu and Zn homeostasis alterations in acute appendicitis (AA). One hundred twenty-two AA patients and 102 healthy controls were enrolled in this study. Of which, 85 patients' appendixes were collected after appendectomy. Another six appendixes from colon cancer patients were collected as tissue controls. The contents of Cu and Zn in serum or appendix were detected, and the Cu to Zn ratio (CZr) was calculated. The concentrations of serum ceruloplasmin (CP), Cu/Zn superoxide dismutase (SOD1), interleukin-6 (IL-6), and interleukin-22 in serum were measured, as well as the activity of CP and SOD1. The serum Zn concentration and SOD1 activity, appendix contents of Cu and Zn significantly decreased in AA patients, compared with those of controls, while serum CZr, concentrations of CP, SOD1, and IL-6, as well as CP activity increased significantly in AA patients. Additionally, serum concentrations of Zn, CP, CZr, or SOD1 activity varied in different pathological types of AA. Indicators such as serum SOD1 activity might serve as predictors for pathological classification before surgery. The serum Zn and CZr may be helpful for diagnosis of pure AA. The Cu and Zn homeostasis was altered in AA patients, which might contribute to inflammatory process of AA.
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Affiliation(s)
- Wenhao Lin
- Emergency Department of Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Wei Han
- Emergency Department of Shenzhen University General Hospital, Shenzhen, China
| | - Ke Wen
- Department of Microsurgery, Taihe Hospital, Shiyan, China
| | - Sunhua Huang
- Emergency Department of Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Yao Tang
- Emergency Department of Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Zhexuan Lin
- Bio-analytical Laboratory, Shantou University Medical College, Shantou, China.
| | - Ming Han
- Emergency Department of Shenzhen University General Hospital, Shenzhen, China.
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Chen K, Lv J, Wang G, Yu X, Xu X, Zhu G, Shao Z, Wang D, Tang C, Cai S. Changes of serum trace elements in early stage trauma and its correlation with injury severity score. Medicine (Baltimore) 2018; 97:e10077. [PMID: 29879011 PMCID: PMC5999505 DOI: 10.1097/md.0000000000010077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Severe trauma can cause secondary multiple organ dysfunction syndrome and death. The absolute and relative concentrations of trace elements in both critical care and conventional treatment, which can lead to acute trace element deficiency, constitute an important mechanism of multiple organ dysfunction syndrome (MODS)/multiple organ failure (MOF). METHODS We investigated the changes in serum Cu, Zn, and Fe in early stage trauma of patients with the high injury severity score (ISS) and correlated the change in trace elements with ISS. Blood samples were collected within an hour of admittance and the patients were scored according to ISS. We collected clinical data records and ISS score values, and determined serum Fe, Zn, and Cu by inductively coupled plasma mass spectrometry. RESULTS Compared with the control group, the serum Zn and Fe values of trauma patients were decreased. There was no significant difference in serum Cu between the patients and the control group. In the trauma group, the serum Zn and Fe were lower than that of the minor injury group, and the difference of Cu concentration was not statistically significant. CONCLUSIONS Serum Zn and Fe levels in patients with multiple trauma fractures were significantly different than those in the normal group, suggesting that Zn and Fe need to be monitored in the early stage of trauma.
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Affiliation(s)
- Kaihong Chen
- The Second Affiliated Hospital of Shantou University Medical College
| | - Junyao Lv
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Guanghuan Wang
- The Second Affiliated Hospital of Shantou University Medical College
| | - Xiaojun Yu
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Xiaohu Xu
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Guanghui Zhu
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Zhuying Shao
- The Second Affiliated Hospital of Shantou University Medical College
| | - Dian Wang
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Chang Tang
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
| | - Shanqing Cai
- Department of Forensic Medicine, Shantou University Medical College, Shantou, Guangdong Province, People's Republic of China
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Li S, Zhao H, Wang Y, Shao Y, Li J, Liu J, Xing M. The inflammatory responses in Cu-mediated elemental imbalance is associated with mitochondrial fission and intrinsic apoptosis in Gallus gallus heart. CHEMOSPHERE 2017; 189:489-497. [PMID: 28957766 DOI: 10.1016/j.chemosphere.2017.09.099] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
Copper (Cu) is an essential trace element for organism of function properly. Overexposure to Cu causes chronic cardiac impairment. The aim of this study was to investigate the change of 28-trace element, inflammatory response, the possible mitochondrial dynamics and apoptosis under Cu exposure in the heart of chickens. Cupric sulfate (CuSO4) (300 mg/kg) was administered in a basal diet to male Hy-line chickens (one-day-old) for 90 days. Results showed the concentrations of Cu in the Cu group were increased by 57.8%, 27.57% and 57.2% at 30, 60 and 90 days, respectively. The Cu supplement caused trace elements imbalance, including reduced concentrations of B, Al, Ni, Ba, Pb and increased Li, Na, Mg, Si, K, Ca, V, Mn, Fe, Co, Zn, As, Mo in the heart of chickens. Exposure to Cu induced the TUNEL positive nuclei, histopathological alterations and ultrastructural apoptotic features. Moreover, Cu exposure activated the NF-κB-mediated pro-inflammatory cytokines, decreased the mRNA levels of opa1, mfn1, mfn2, Bcl-2, increased the mRNA levels of drp1, Bax, caspase-3, caspase-9, P53, while not altered Fas and caspase-8 compared with the control group. Similarly, western blot results showed the same trend of mRNA. Correlation analysis indicated that mitochondrial fission and intrinsic apoptosis might function synergistic. Moreover, mitochondrial network seem to function as cytosolic sensors for the induction of NF-κB mediated inflammatory responses. In summary, we speculated that Cu-induced redistribution of trace elements contributed to inflammatory response and disrupted the mitochondrial network via fission and intrinsic apoptosis in the heart of chickens.
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Affiliation(s)
- Siwen Li
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
| | - Hongjing Zhao
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Yu Wang
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Yizhi Shao
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Jinglun Li
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Juanjuan Liu
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Mingwei Xing
- Department of Physiology, College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
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Kagan I, Theilla M, Singer P. Is Total Parenteral Nutrition (TPN) an Evil in Trauma Patients? CURRENT TRAUMA REPORTS 2016. [DOI: 10.1007/s40719-016-0041-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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8
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Xu G, Su R, Li B, Lv J, Sun W, Hu B, Li X, Gu J, Yu X. Trace Element Concentrations in Human Tissues of Death Cases Associated With Secondary Infection and MOF After Severe Trauma. Biol Trace Elem Res 2015; 168:335-9. [PMID: 26043914 DOI: 10.1007/s12011-015-0378-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/20/2015] [Indexed: 02/05/2023]
Abstract
Proper trace element level is crucial for the organs in maintaining normal physiological functions. Multiple organ failure (MOF) might be added to critically ill patients due to a lack of trace elements. Alterations of trace element levels in brain, heart, liver, and kidney after severe trauma, however, have been little studied so far. In this study, tissue samples of the frontal cortex of the brain, interventricular septum of the heart, right lobe of the liver, and upper pole of the kidney were obtained from forensic autopsies, of which 120 cases died during the 5th to 15th day of hospitalization, whereas the trauma death group and 43 cases immediately died due to severe craniocerebral trauma as the control group. Copper (Cu), iron (Fe), zinc (Zn), and selenium (Se) were quantified by inductively coupled plasma atomic emission spectrophotometry (ICP-AES). Cu, Fe, Zn, and Se concentrations in the brain, heart, liver, and kidney in the trauma group decreased dramatically (p<0.05) compared to the control group. The incidence of secondary infection and multiple organ failure (MOF) in the trauma death group were 78.33 and 29.17%, respectively. The concentrations of all elements exhibited a significant correlation with secondary infection and MOF (p<0.01). Our data suggest that low concentrations of Cu, Fe, Zn, and Se in pivotal organs may contribute to the incidence of secondary infection and MOF after severe trauma, which to some extent results in death.
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Affiliation(s)
- Guangtao Xu
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China.
- Department of Forensic and Pathology, Jiaxing University Medical College, 314001, Jiaxing, Zhejiang Province, People's Republic of China.
- Department of Forensic Pathology, Jiaxing Zhiyuan Forensic Science Institute, 314001, Jiaxing, Zhejiang Province, People's Republic of China.
| | - Ruibing Su
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China
| | - Bo Li
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China
| | - Junyao Lv
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China
| | - Weiqi Sun
- Department of Preventive Medicine, School of Public Health, Beihua University, 132013, Jilin, Jilin Province, People's Republic of China
| | - Bo Hu
- Department of Pathology, Jiaxing Hospital of Traditional Chinese Medicine, 314001, Jiaxing, Zhejiang Province, People's Republic of China
| | - Xianxian Li
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China
| | - Jiang Gu
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China
| | - Xiaojun Yu
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China.
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Filipiak-Szok A, Kurzawa M, Cichosz M, Szłyk E. Elemental Analysis of Medicinal Herbs and Dietary Supplements. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1041031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Xu G, Hu B, Chen G, Yu X, Luo J, Lv J, Gu J. Analysis of blood trace elements and biochemical indexes levels in severe craniocerebral trauma adults with Glasgow Coma Scale and injury severity score. Biol Trace Elem Res 2015; 164:192-7. [PMID: 25575666 DOI: 10.1007/s12011-014-0225-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/29/2014] [Indexed: 02/05/2023]
Abstract
We aimed to investigate the correlation between the Glasgow Coma Scale (GCS), the injury severity score (ISS) and serum levels of trace elements (TE) in severe trauma patients to analyze alteration of the levels of trace elements and serum biochemical indexes in the period of admission from 126 adult cases of severe brain trauma with traffic accidents. Multi-trace elements for patients in the trauma-TE groups were used. The results indicated that all patients presented an acute trace elements deficiency syndrome (ATEDs) after severe trauma, and the correlation between ISS and serum levels of Fe, Zn, and Mg was significant. Compared to the normal control group, levels of the trace elements in serum were significantly decreased after trauma, suggesting that enhancement of immunity to infection and multiple organ failure (MOF) via the monitoring and supplement of trace elements will be a good strategy to severe traumatic patients in clinics.
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Affiliation(s)
- Guangtao Xu
- National Key Disciplines, Department of Forensic and Pathology, Shantou University Medical College, 515041, Shantou, Guangdong Province, People's Republic of China,
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Hemorrhagic shock and surgical stress alter distribution of labile zinc within high- and low-molecular-weight plasma fractions. Shock 2012; 38:314-9. [PMID: 22744307 DOI: 10.1097/shk.0b013e3182627338] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Zinc ions (Zn) are essential for tissue repair following injury or stress. We hypothesize that during such stresses Zn is redistributed to labile pools in plasma components. Here we tested this hypothesis using a novel assay to monitor labile Zn in plasma in hemorrhagic shock. Adult rats in the shock group (S group) underwent hemorrhage and resuscitation. Blood samples were drawn at baseline and at 1, 4, and 24 h. The surgical control group (SC group) was anesthetized and instrumented, but not bled. Albumin, total Zn, and labile Zn levels were assayed in plasma. Binding capacity for Zn was assessed in high- and low-molecular-weight pools. Significant decreases in total Zn were observed by 24 h, in both S and SC groups. Albumin levels were significantly reduced in the S group at 1 and 4 h but restored at 24 h; significant changes were not observed in other groups. In whole plasma, labile Zn levels were stable initially in the S and SC groups, but declined at 24 h. In the high-molecular-weight pool, marked and significant impairment of binding was noted throughout all time periods following the shock period in the S group. Such changes were observed in the SC group of less intensity and duration. These experiments suggest that shock alters affinity of plasma proteins for Zn, promoting delivery to peripheral tissues during periods of increased Zn utilization.
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