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Abstract
Research into TBI biomarkers has accelerated rapidly in the past decade owing to the heterogeneous nature of TBI pathologies and management, which pose challenges to TBI evaluation, management, and prognosis. TBI biomarker proteins resulting from axonal, neuronal, or glial cell injuries are widely used and have been extensively studied. However, they might not pass the blood-brain barrier with sufficient amounts to be detected in peripheral blood specimens, and further might not be detectable in the cerebrospinal fluid owing to flow limitations triggered by the injury itself. Despite the advances in TBI research, there is an unmet clinical need to develop and identify novel TBI biomarkers that entirely correlate with TBI pathologies on the molecular level, including mild TBI, and further enable physicians to predict patient outcomes and allow researchers to test neuroprotective agents to limit the extents of injury. Although the extracellular vesicles have been identified and studied long ago, they have recently been revisited and repurposed as potential TBI biomarkers that overcome the many limitations of the traditional blood and CSF assays. Animal and human experiments demonstrated the accuracy of several types of exosomes and miRNAs in detecting mild, moderate, and severe TBI. In this paper, we provide a comprehensive review of the traditional TBI biomarkers that are helpful in clinical practice. Also, we highlight the emerging roles of exosomes and miRNA being the promising candidates under investigation of current research.
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Mozaffari K, Dejam D, Duong C, Ding K, French A, Ng E, Preet K, Franks A, Kwan I, Phillips HW, Kim DY, Yang I. Systematic Review of Serum Biomarkers in Traumatic Brain Injury. Cureus 2021; 13:e17056. [PMID: 34522534 PMCID: PMC8428323 DOI: 10.7759/cureus.17056] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2021] [Indexed: 12/20/2022] Open
Abstract
Traumatic brain injury (TBI) is responsible for the majority of trauma-related deaths and is a leading cause of disability. It is characterized by an inflammatory process involved in the progression of secondary brain injury. TBI is measured by the Glasgow Coma Scale (GCS) with scores ranging from 15-3, demonstrating mild to severe brain injury. Apart from this clinical assessment of TBI, compendiums of literature have been published on TBI-related serum markers.Herein we create a comprehensive appraisal of the most prominent serum biomarkers used in the assessment and care of TBI.The PubMed, Scopus, Cochrane, and Web of Science databases were queried with the terms “biomarker” and “traumatic brain injury” as search terms with only full-text, English articles within the past 10 years selected. Non-human studies were excluded, and only adult patients fell within the purview of this analysis. A total of 528 articles were analyzed in the initial search with 289 selected for screening. A further 152 were excluded for primary screening. Of the remaining 137, 54 were included in the final analysis. Serum biomarkers were listed into the following broad categories for ease of discussion: immune markers and markers of inflammation, hormones as biomarkers, coagulation and vasculature, genetic polymorphisms, antioxidants and oxidative stress, apoptosis and degradation pathways, and protein markers. Glial fibrillary acidic protein(GFAP), S100, and neurons specific enolase (NSE) were the most prominent and frequently cited markers. Amongst these three, no single serum biomarker demonstrated neither superior sensitivity nor specificity compared to the other two, therefore noninvasive panels should incorporate these three serum biomarkers to retain sensitivity and maximize specificity for TBI.
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Affiliation(s)
- Khashayar Mozaffari
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Dillon Dejam
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - Courtney Duong
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - Kevin Ding
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Alexis French
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Edwin Ng
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Komal Preet
- Neurosurgery, University of California, Los Angeles, USA
| | - Alyssa Franks
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Isabelle Kwan
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - H Westley Phillips
- Neurosurgery, Ronald Reagan University of California Los Angeles Medical Center, Los Angeles, USA
| | - Dennis Y Kim
- Biomedical Sciences, Harbor University of California Los Angeles Medical Center, Los Angeles, USA
| | - Isaac Yang
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, USA
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Wang KKW, Kobeissy FH, Shakkour Z, Tyndall JA. Thorough overview of ubiquitin C-terminal hydrolase-L1 and glial fibrillary acidic protein as tandem biomarkers recently cleared by US Food and Drug Administration for the evaluation of intracranial injuries among patients with traumatic brain injury. Acute Med Surg 2021; 8:e622. [PMID: 33510896 PMCID: PMC7814989 DOI: 10.1002/ams2.622] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 12/02/2020] [Accepted: 12/08/2020] [Indexed: 12/11/2022] Open
Abstract
Traumatic brain injury (TBI) is a major cause of mortality and morbidity affecting all ages. It remains to be a diagnostic and therapeutic challenge, in which, to date, there is no Food and Drug Administration‐approved drug for treating patients suffering from TBI. The heterogeneity of the disease and the associated complex pathophysiology make it difficult to assess the level of the trauma and to predict the clinical outcome. Current injury severity assessment relies primarily on the Glasgow Coma Scale score or through neuroimaging, including magnetic resonance imaging and computed tomography scans. Nevertheless, such approaches have certain limitations when it comes to accuracy and cost efficiency, as well as exposing patients to unnecessary radiation. Consequently, extensive research work has been carried out to improve the diagnostic accuracy of TBI, especially in mild injuries, because they are often difficult to diagnose. The need for accurate and objective diagnostic measures led to the discovery of biomarkers significantly associated with TBI. Among the most well‐characterized biomarkers are ubiquitin C‐terminal hydrolase‐L1 and glial fibrillary acidic protein. The current review presents an overview regarding the structure and function of these distinctive protein biomarkers, along with their clinical significance that led to their approval by the US Food and Drug Administration to evaluate mild TBI in patients.
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Affiliation(s)
- Kevin K W Wang
- Program for Neurotrauma Neuroproteomics and Biomarkers Research Departments of Emergency Medicine, Psychiatry, Neuroscience and Chemistry University of Florida Gainesville Florida USA.,Brain Rehabilitation Research Center (BRRC) Malcom Randall VA Medical Center North Florida / South Georgia Veterans Health System Gainesville Florida USA
| | - Firas H Kobeissy
- Department of Emergency Medicine University of Florida Gainesville Florida USA
| | - Zaynab Shakkour
- Department of Biochemistry and Molecular Genetics Faculty of Medicine American University of Beirut Beirut Lebanon
| | - J Adrian Tyndall
- Department of Emergency Medicine University of Florida Gainesville Florida USA
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Prognostic Value of Glial Fibrillary Acidic Protein in Patients With Moderate and Severe Traumatic Brain Injury: A Systematic Review and Meta-Analysis. Crit Care Med 2020; 47:e522-e529. [PMID: 30889029 DOI: 10.1097/ccm.0000000000003728] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Biomarkers have been suggested as potential prognostic predictors following a moderate or severe traumatic brain injury but their prognostic accuracy is still uncertain. The objective of this systematic review is to assess the ability of the glial fibrillary acidic protein to predict prognosis in patients with moderate or severe traumatic brain injury. DATA SOURCES MEDLINE, Embase, CENTRAL, and BIOSIS electronic databases and conference abstracts, bibliographies of selected studies, and narrative reviews were searched. STUDY SELECTION Pairs of reviewers identified eligible studies. Cohort studies including greater than or equal to four patients with moderate or severe traumatic brain injury and reporting glial fibrillary acidic protein levels according to the outcomes of interest, namely Glasgow Outcome Scale or Extended Glasgow Outcome Scale, and mortality, were eligible. DATA EXTRACTION Pairs of reviewers independently extracted data from the selected studies using a standardized case report form. Mean levels were log-transformed, and their differences were pooled with random effect models. Results are presented as geometric mean ratios. Methodologic quality, risk of bias, and applicability concerns of the included studies were assessed. DATA SYNTHESIS Seven-thousand seven-hundred sixty-five citations were retrieved of which 15 studies were included in the systematic review (n = 1,070), and nine were included in the meta-analysis (n = 701). We found significant associations between glial fibrillary acidic protein serum levels and Glasgow Outcome Scale score less than or equal to 3 or Extended Glasgow Outcome Scale score less than or equal to 4 (six studies: geometric mean ratio 4.98 [95% CI, 2.19-11.13]; I = 94%) and between mortality (seven studies: geometric mean ratio 8.13 [95% CI, 3.89-17.00]; I = 99%). CONCLUSIONS Serum glial fibrillary acidic protein levels were significantly higher in patients with an unfavorable prognosis. Glial fibrillary acidic protein has a potential for clinical bedside use in helping for prognostic assessment. Further research should focus on multimodal approaches including tissue biomarkers for prognostic evaluation in critically ill patients with traumatic brain injury.
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Bagnato S, Andriolo M, Boccagni C, Lucca LF, De Tanti A, Pistarini C, Barone T, Galardi G. Reduced Neuron-Specific Enolase Levels in Chronic Severe Traumatic Brain Injury. J Neurotrauma 2019; 37:423-427. [PMID: 31418324 DOI: 10.1089/neu.2019.6449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Growing evidence suggests that pathophysiological mechanisms leading to neurodegeneration and neuronal loss take place during the chronic phase of a severe traumatic brain injury (TBI). In this study we evaluated a well-established marker of brain injury, the neuron-specific enolase (NSE), in the serum of 51 patients with severe TBI (86% males, mean age 33.8 ± 11.1 years). All patients' samples were available from a previous study and the mean time between TBI and blood sample collection was 23.2 ± 31.5 months (28 patients were evaluated within 12 months of TBI and 23 patients were evaluated ≥12 months after TBI). Patients' NSE levels were compared with those obtained from 30 age and sex-matched healthy controls (87% males, 33.7 ± 11.3 years). We found that NSE levels were significantly lower in patients (median 3.2 ng/mL; 25th, 75th percentile 2.5, 5.1) than in healthy controls (median 4.1 ng/mL; 25th, 75th percentile 3.1, 7.5) (p = 0.026). This finding was mainly driven by data from the chronic patients, that is, those who experienced their TBI at least 12 months before the evaluation. Indeed, these patients had significantly lower NSE levels (median 2.6 ng/mL; 25th, 75th percentile 1.9, 4) than healthy controls (p < 0.01). On the other hand, NSE levels evaluated in patients <12 months from TBI (median 3.9 ng/mL; 25th, 75th percentile 2.8, 5.7) did not significantly differ from controls (p = 0.3). These findings possibly reflect a progressive brain atrophy with reduced baseline NSE release in the chronic phase of a severe TBI.
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Affiliation(s)
- Sergio Bagnato
- Unit of Neurophysiology and Unit for Severe Acquired Brain Injuries, Rehabilitation Department, Giuseppe Giglio Foundation, Cefalù, Italy
| | - Maria Andriolo
- Clinical Pathology and Microbiology Laboratory, Giuseppe Giglio Foundation, Cefalù, Italy
| | - Cristina Boccagni
- Unit of Neurophysiology and Unit for Severe Acquired Brain Injuries, Rehabilitation Department, Giuseppe Giglio Foundation, Cefalù, Italy
| | - Lucia Francesca Lucca
- RAN (Research in Advanced Neuro-rehabilitation), Sant'Anna Institute, Crotone, Italy
| | | | - Caterina Pistarini
- ICS Maugeri SPA SB, Neurorehabilitation Unit, Institute of Genoa, Genoa, Italy
| | - Teresa Barone
- Immunohematology and Transfusion Service, Cefalù, Italy
| | - Giuseppe Galardi
- Unit of Neurophysiology and Unit for Severe Acquired Brain Injuries, Rehabilitation Department, Giuseppe Giglio Foundation, Cefalù, Italy
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Blood purification by nonselective hemoadsorption prevents death after traumatic brain injury and hemorrhagic shock in rats. J Trauma Acute Care Surg 2019; 85:1063-1071. [PMID: 30211852 DOI: 10.1097/ta.0000000000002069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Patients who sustain traumatic brain injury (TBI) and concomitant hemorrhagic shock (HS) are at high risk of high-magnitude inflammation which can lead to poor outcomes and death. Blood purification by hemoadsorption (HA) offers an alternative intervention to reduce inflammation after injury. We tested the hypothesis that HA would reduce mortality in a rat model of TBI and HS. METHODS Male Sprague Dawley rats were subjected to a combined injury of a controlled cortical impact to their brain and pressure-controlled HS. Animals were subsequently instrumented with an extracorporeal blood circuit that passed through a cartridge for sham or experimental treatment. In experimental animals, the treatment cartridge was filled with proprietary beads (Cytosorbents, Monmouth Junction, NJ) that removed circulating molecules between 5 kDa and 60 kDa. Sham rats had equivalent circulation but no blood purification. Serial blood samples were analyzed with multiplex technology to quantify changes in a trauma-relevant panel of immunologic mediators. The primary outcome was survival to 96 hours postinjury. RESULTS Hemoadsorption improved survival from 47% in sham-treated rats to 86% in HA-treated rats. There were no treatment-related changes in histologic appearance. Hemoadsorption affected biomarker concentrations both during the treatment and over the ensuing 4 days after injury. Distinct changes in biomarker concentrations were also measured in survivor and nonsurvivor rats from the entire cohort of rats indicating biomarker patterns associated with survival and death after injury. CONCLUSION Blood purification by nonselective HA is an effective intervention to prevent death in a combined TBI/HS rat model. Hemoadsorption changed circulating concentrations of multiple inmmunologically active mediators during the treatment time frame and after treatment. Hemoadsorption has been safely implemented in human patients with sepsis and may be a treatment option after injury.
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Kassi AAY, Mahavadi AK, Clavijo A, Caliz D, Lee SW, Ahmed AI, Yokobori S, Hu Z, Spurlock MS, Wasserman JM, Rivera KN, Nodal S, Powell HR, Di L, Torres R, Leung LY, Rubiano AM, Bullock RM, Gajavelli S. Enduring Neuroprotective Effect of Subacute Neural Stem Cell Transplantation After Penetrating TBI. Front Neurol 2019; 9:1097. [PMID: 30719019 PMCID: PMC6348935 DOI: 10.3389/fneur.2018.01097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 12/03/2018] [Indexed: 12/13/2022] Open
Abstract
Traumatic brain injury (TBI) is the largest cause of death and disability of persons under 45 years old, worldwide. Independent of the distribution, outcomes such as disability are associated with huge societal costs. The heterogeneity of TBI and its complicated biological response have helped clarify the limitations of current pharmacological approaches to TBI management. Five decades of effort have made some strides in reducing TBI mortality but little progress has been made to mitigate TBI-induced disability. Lessons learned from the failure of numerous randomized clinical trials and the inability to scale up results from single center clinical trials with neuroprotective agents led to the formation of organizations such as the Neurological Emergencies Treatment Trials (NETT) Network, and international collaborative comparative effectiveness research (CER) to re-orient TBI clinical research. With initiatives such as TRACK-TBI, generating rich and comprehensive human datasets with demographic, clinical, genomic, proteomic, imaging, and detailed outcome data across multiple time points has become the focus of the field in the United States (US). In addition, government institutions such as the US Department of Defense are investing in groups such as Operation Brain Trauma Therapy (OBTT), a multicenter, pre-clinical drug-screening consortium to address the barriers in translation. The consensus from such efforts including “The Lancet Neurology Commission” and current literature is that unmitigated cell death processes, incomplete debris clearance, aberrant neurotoxic immune, and glia cell response induce progressive tissue loss and spatiotemporal magnification of primary TBI. Our analysis suggests that the focus of neuroprotection research needs to shift from protecting dying and injured neurons at acute time points to modulating the aberrant glial response in sub-acute and chronic time points. One unexpected agent with neuroprotective properties that shows promise is transplantation of neural stem cells. In this review we present (i) a short survey of TBI epidemiology and summary of current care, (ii) findings of past neuroprotective clinical trials and possible reasons for failure based upon insights from human and preclinical TBI pathophysiology studies, including our group's inflammation-centered approach, (iii) the unmet need of TBI and unproven treatments and lastly, (iv) present evidence to support the rationale for sub-acute neural stem cell therapy to mediate enduring neuroprotection.
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Affiliation(s)
- Anelia A Y Kassi
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Anil K Mahavadi
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Angelica Clavijo
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Daniela Caliz
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Stephanie W Lee
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Aminul I Ahmed
- Wessex Neurological Centre, University Hospitals Southampton, Southampton, United Kingdom
| | - Shoji Yokobori
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
| | - Zhen Hu
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Markus S Spurlock
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Joseph M Wasserman
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Karla N Rivera
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Samuel Nodal
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Henry R Powell
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Long Di
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Rolando Torres
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Lai Yee Leung
- Branch of Brain Trauma Neuroprotection and Neurorestoration, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, MD, United States.,Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Andres Mariano Rubiano
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Ross M Bullock
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Shyam Gajavelli
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
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Joseph B, Khan M, Rhee P. Non-invasive diagnosis and treatment strategies for traumatic brain injury: an update. J Neurosci Res 2017; 96:589-600. [PMID: 28836292 DOI: 10.1002/jnr.24132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 06/26/2017] [Accepted: 07/10/2017] [Indexed: 12/28/2022]
Abstract
PURPOSE OF REVIEW Traumatic Brain Injury (TBI) remains the leading cause of morbidity and mortality in U.S. Since the last decade, there have been several advances in the understanding and management of TBI that have shown the potential to improve outcomes. The aim of this review is to provide a useful overview of these potential diagnostic and treatment strategies that have yet to be proven, along with an assessment of their impact on outcomes after a TBI. RECENT FINDINGS Recent technical advances in the management of a TBI are grounded in a better understanding of the pathophysiology of primary and secondary insult to the brain after a TBI. Hence, clinical trials on humans should proceed in order to evaluate their efficacy and safety. SUMMARY Mortality associated with TBI remains high. Nonetheless, new diagnostic and therapeutic techniques have the potential to enhance early detection and prevention of secondary brain insult.
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Affiliation(s)
- Bellal Joseph
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - Muhammad Khan
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - Peter Rhee
- Division of Acute Care Surgery, Department of Surgery, Grady Memorial Hospital, Atlanta, Georgia, USA
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Plonek M, Nicpoń J, Kubiak K, Wrzosek M. A comparison of the brainstem auditory evoked response in healthy ears of unilaterally deaf dogs and bilaterally hearing dogs. Vet Res Commun 2017; 41:23-31. [PMID: 27896671 PMCID: PMC5306067 DOI: 10.1007/s11259-016-9668-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 11/09/2016] [Indexed: 10/31/2022]
Abstract
AIMS Auditory plasticity in response to unilateral deafness has been reported in various animal species. Subcortical changes occurring in unilaterally deaf young dogs using the brainstem auditory evoked response have not been evaluated yet. The aim of this study was to assess the brainstem auditory evoked response findings in dogs with unilateral hearing loss, and compare them with recordings obtained from healthy dogs. METHODS Brainstem auditory evoked responses (amplitudes and latencies of waves I, II, III, V, the V/I wave amplitude ratio, wave I-V, I-III and III-V interpeak intervals) were studied retrospectively in forty-six privately owned dogs, which were either unilaterally deaf or had bilateral hearing. The data obtained from the hearing ears in unilaterally deaf dogs were compared to values obtained from their healthy littermates. RESULTS Statistically significant differences in the amplitude of wave III and the V/I wave amplitude ratio at 75 dB nHL were found between the group of unilaterally deaf puppies and the control group. The recordings of dogs with single-sided deafness were compared, and the results showed no statistically significant differences in the latencies and amplitudes of the waves between left- (AL) and right-sided (AR) deafness. CONCLUSIONS The recordings of the brainstem auditory evoked response in canines with unilateral inborn deafness in this study varied compared to recordings from healthy dogs. Future studies looking into electrophysiological assessment of hearing in conjunction with imaging modalities to determine subcortical auditory plasticity and auditory lateralization in unilaterally deaf dogs are warranted.
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Affiliation(s)
- M. Plonek
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, The Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 47, 50-366 Wrocław, Poland
| | - J. Nicpoń
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, The Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 47, 50-366 Wrocław, Poland
- Centre for Experimental Diagnostics and Biomedical Innovations, Grunwaldzki sq. 47, 50-366 Wroclaw, Poland
| | - K. Kubiak
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, The Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 47, 50-366 Wrocław, Poland
| | - M. Wrzosek
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, The Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 47, 50-366 Wrocław, Poland
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11
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Abstract
Abstract
There are numerous biomarkers of central and peripheral nervous system damage described in human and veterinary medicine. Many of these are already used as tools in the diagnosis of human neurological disorders, and many are investigated in regard to their use in small and large animal veterinary medicine. The following review presents the current knowledge about the application of cell-type (glial fibrillary acidic protein, neurofilament subunit NF-H, myelin basic protein) and central nervous system specific proteins (S100B, neuron specific enolase, tau protein, alpha II spectrin, ubiquitin carboxy-terminal hydrolase L1, creatine kinase BB) present in the cerebrospinal fluid and/or serum of animals in the diagnosis of central or peripheral nervous system damage in veterinary medicine.
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Affiliation(s)
- Marta Płonek
- Department of Internal Diseases with Clinic for Diseases of Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw
| | - Marcin Wrzosek
- Department of Internal Diseases with Clinic for Diseases of Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw
| | - Józef Nicpoń
- Department of Internal Diseases with Clinic for Diseases of Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw
- Centre for Experimental Diagnostics and Biomedical Innovations, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw
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12
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Thelin EP, Jeppsson E, Frostell A, Svensson M, Mondello S, Bellander BM, Nelson DW. Utility of neuron-specific enolase in traumatic brain injury; relations to S100B levels, outcome, and extracranial injury severity. Crit Care 2016; 20:285. [PMID: 27604350 PMCID: PMC5015335 DOI: 10.1186/s13054-016-1450-y] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/09/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND In order to improve assessment and outcome prediction in patients suffering from traumatic brain injury (TBI), cerebral protein levels in serum have been suggested as biomarkers of injury. However, despite much investigation, biomarkers have yet to reach broad clinical utility in TBI. This study is a 9-year follow-up and clinical experience of the two most studied proteins, neuron-specific enolase (NSE) and S100B, in a neuro-intensive care TBI population. Our aims were to investigate to what extent NSE and S100B, independently and in combination, could predict outcome, assess injury severity, and to investigate if the biomarker levels were influenced by extracranial factors. METHODS All patients treated at the neuro-intensive care unit at Karolinska University Hospital, Stockholm, Sweden between 2005 and 2013 with at least three measurements of serum S100B and NSE (sampled twice daily) were retrospectively included. In total, 417 patients fulfilled the criteria. Parameters were extracted from the computerized hospital charts. Glasgow Outcome Score (GOS) was used to assess long-term functional outcome. Univariate, and multivariate, regression models toward outcome and what explained the high levels of the biomarkers were performed. Nagelkerke's pseudo-R(2) was used to illustrate the explained variance of the different models. A sliding window assessed biomarker correlation to outcome and multitrauma over time. RESULTS S100B was found a better predictor of outcome as compared to NSE (area under the curve (AUC) samples, the first 48 hours had Nagelkerke's pseudo-R(2) values of 0.132 and 0.038, respectively), where the information content of S100B peaks at approximately 1 day after trauma. In contrast, although both biomarkers were independently correlated to outcome, NSE had limited additional predictive capabilities in the presence of S100B in multivariate models, due to covariance between the two biomarkers (correlation coefficient 0.673 for AUC 48 hours). Moreover, NSE was to a greater extent correlated to multitrauma the first 48 hours following injury, whereas the effect of extracerebral trauma on S100B levels appears limited to the first 12 hours. CONCLUSIONS While both biomarkers are independently correlated to long-term functional outcome, S100B is found a more accurate outcome predictor and possibly a more clinically useful biomarker than NSE for TBI patients.
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Affiliation(s)
- Eric Peter Thelin
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Emma Jeppsson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Arvid Frostell
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Svensson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Stefania Mondello
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Bo-Michael Bellander
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - David W. Nelson
- Department of Physiology and Pharmacology, Section of Anesthesiology and Intensive Care, Karolinska Institutet, Stockholm, Sweden
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Abstract
Biomarkers are key tools and can provide crucial information on the complex cascade of events and molecular mechanisms underlying traumatic brain injury (TBI) pathophysiology. Obtaining a profile of distinct classes of biomarkers reflecting core pathologic mechanisms could enable us to identify and characterize the initial injury and the secondary pathologic cascades. Thus, they represent a logical adjunct to improve diagnosis, track progression and activity, guide molecularly targeted therapy, and monitor therapeutic response in TBI. Accordingly, great effort has been put into the identification of novel biomarkers in the past 25 years. However, the role of brain injury markers in clinical practice has been long debated, due to inconsistent regulatory standards and lack of reliable evidence of analytical validity and clinical utility. We present a comprehensive overview of the markers currently available while characterizing their potential role and applications in diagnosis, monitoring, drug discovery, and clinical trials in TBI. In reviewing these concepts, we discuss the recent inclusion of brain damage biomarkers in the diagnostic guidelines and provide perspectives on the validation of such markers for their use in the clinic.
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The role of cardiac troponin I in prognostication of patients with isolated severe traumatic brain injury. J Trauma Acute Care Surg 2016; 80:477-83. [PMID: 26910044 DOI: 10.1097/ta.0000000000000916] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cardiac dysfunction is frequently observed after severe traumatic brain injury (sTBI); however, its significance is poorly understood. Our study sought to elucidate the association of cardiac troponin I (cTnI) elevation with all-cause in-hospital mortality following isolated sTBI (brain Abbreviated Injury Scale score ≥3 and admission Glasgow Coma Scale score ≤8, no Abbreviated Injury Scale score ≥3 to any other bodily regions). METHODS We retrospectively reviewed all adult patients (aged ≥18 years) with isolated sTBI admitted to a Level I trauma center between June 2007 and January 2014. Patients must have cTnI values within 24 hours of admission. Mortality risks were examined by Cox proportional hazard model. RESULTS Of 580 patients identified, 30.9% had detectable cTnI in 24 hours of admission. The median survival time was 4.19 days (interquartile range, 1.27-11.69). When adjusted for potential confounders, patients in the highest cTnI category (≥0.21 ng/mL) had a significantly higher risk of in-hospital mortality (hazard ratio, 1.39; 95% confidence interval, 1.04-1.88) compared with patients with undetectable cTnI. Mortality risk increased with higher troponin levels (p < 0.0001). This association was more pronounced in patients aged 65 years or younger (hazard ratio, 2.28; 95% confidence interval, 1.53-3.40; p < 0.0001) while, interestingly, insignificant in those older than 65 years (p = 0.0826). CONCLUSION Among patients with sTBI, cTnI elevation is associated with all-cause in-hospital mortality via a nonlinear positive trend. Age modified the effect of cTnI on mortality. LEVEL OF EVIDENCE Prognostic and epidemiologic study, level III.
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15
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Mercier E, Boutin A, Shemilt M, Lauzier F, Zarychanski R, Fergusson DA, Moore L, McIntyre LA, Archambault P, Légaré F, Rousseau F, Lamontagne F, Nadeau L, Turgeon AF. Predictive value of neuron-specific enolase for prognosis in patients with moderate or severe traumatic brain injury: a systematic review and meta-analysis. CMAJ Open 2016; 4:E371-E382. [PMID: 27975043 PMCID: PMC5143026 DOI: 10.9778/cmajo.20150061] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Prognosis is difficult to establish early after moderate or severe traumatic brain injury despite representing an important concern for patients, families and medical teams. Biomarkers, such as neuron-specific enolase, have been proposed as potential early prognostic indicators. Our objective was to determine the association between neuron-specific enolase and clinical outcomes, and the prognostic value of neuron-specific enolase after a moderate or severe traumatic brain injury. METHODS We searched MEDLINE, Embase, The Cochrane Library and Biosis Previews, and reviewed reference lists of eligible articles to identify studies. We included cohort studies and randomized controlled trials that evaluated the prognostic value of neuron-specific enolase to predict mortality or Glasgow Outcome Scale score in patients with moderate or severe traumatic brain injury. Two reviewers independently collected data. The pooled mean differences were analyzed using random-effects models. We assessed risk of bias using a customized Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) tool. Subgroup and sensitivity analyses were performed based on a priori hypotheses. RESULTS We screened 5026 citations from which 30 studies (involving 1321 participants) met our eligibility criteria. We found a significant positive association between neuron-specific enolase serum levels and mortality (10 studies, n = 474; mean difference [MD] 18.46 µg/L, 95% confidence interval [CI] 10.81 to 26.11 µg/L; I2 = 83%) and a Glasgow Outcome Scale ≤ 3 (14 studies, n = 603; MD 17.25 µg/L, 95% CI 11.42 to 23.07 µg/L; I2 = 82%). We were unable to determine a clinical threshold value using the available patient data. INTERPRETATION In patients with moderate or severe traumatic brain injury, increased neuron-specific enolase serum levels are associated with unfavourable outcomes. The optimal neuron-specific enolase threshold value to predict unfavourable prognosis remains unknown and clinical decision-making is currently not recommended until additional studies are made available.
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Affiliation(s)
- Eric Mercier
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Amélie Boutin
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Michèle Shemilt
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - François Lauzier
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Ryan Zarychanski
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Dean A Fergusson
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Lynne Moore
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Lauralyn A McIntyre
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Patrick Archambault
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - France Légaré
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - François Rousseau
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - François Lamontagne
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Linda Nadeau
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
| | - Alexis F Turgeon
- Centre de recherche du CHU de Québec - Université Laval (Mercier, Boutin, Shemilt, Lauzier, Moore, Archambault, Légaré, Turgeon), Population Health and Optimal Health Practices Research Unit; Department of Social and Preventive Medicine (Boutin, Moore); Department of Anesthesiology and Critical Care Medicine (Lauzier, Archambault, Turgeon), Division of Critical Care Medicine; Department of Family Medicine and Emergency Medicine (Archambault, Légaré), Faculty of Medicine (Lauzier); Department of Molecular Biology (Rousseau, Nadeau), Medical Biochemistry and Pathology, Université Laval, Québec City, Que.; Department of Haematology and Medical Oncology (Zarychanski), University of Manitoba, Winnipeg, Man.; Center for Transfusion and Critical Care Research (Fergusson, McIntyre, Turgeon), Clinical Epidemiology Unit, Ottawa Health Research Institute, University of Ottawa; Department of Critical Care Medicine (Fergusson, McIntyre), Ottawa Hospital, University of Ottawa, Ottawa, Ont.; Centre de Recherche Étienne Lebel (Lamontagne), Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Que.; Department of Medicine (Lamontagne), Université de Sherbrooke, Sherbrooke, Que
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Rodríguez-Rodríguez A, Egea-Guerrero JJ, Gordillo-Escobar E, Enamorado-Enamorado J, Hernández-García C, Ruiz de Azúa-López Z, Vilches-Arenas Á, Guerrero JM, Murillo-Cabezas F. S100B and Neuron-Specific Enolase as mortality predictors in patients with severe traumatic brain injury. Neurol Res 2016; 38:130-7. [PMID: 27078699 DOI: 10.1080/01616412.2016.1144410] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To determine temporal profile and prognostic ability of S100B protein and neuron-specific enolase (NSE) for prediction of short/long-term mortality in patients suffering from severe traumatic brain injury (sTBI). METHODS Ninety-nine patients with sTBI were included in the study. Blood samples were drawn on admission and on subsequent 24, 48, 72, and 96 h. RESULTS 15.2% of patients died in NeuroCritical Care Unit, and 19.2% died within 6 months of the accident. S100B concentrations were significantly higher in patients who died compared to survivors. NSE levels were different between groups just at 48 h. In the survival group, S100B levels decreased from 1st to 5th sample (p < 0.001); NSE just from 1st to 3rd (p < 0.001) and then stabilized. Values of S100B and NSE in non-survival patients did not significantly vary over the four days post sTBI. ROC-analysis showed that all S100B samples were useful tools for predicting mortality, the best the 72 h sample (AUC 0.848 for discharge mortality, 0.855 for six-month mortality). NSE ROC-analysis indicated that just the 48-h sample predicted mortality (AUC 0.733 for discharge mortality, 0.720 for six-month mortality). CONCLUSION S100B protein showed higher prognostic capacity than NSE to predict short/long-term mortality in sTBI patients.
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Affiliation(s)
- Ana Rodríguez-Rodríguez
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Juan José Egea-Guerrero
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Elena Gordillo-Escobar
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Judy Enamorado-Enamorado
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Conary Hernández-García
- b Department of Clinical Biochemistry , Virgen del Rocio University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Zaida Ruiz de Azúa-López
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | | | - Juan Miguel Guerrero
- b Department of Clinical Biochemistry , Virgen del Rocio University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
| | - Francisco Murillo-Cabezas
- a NeuroCritical Care Unit , Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville , Seville , Spain
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Boutté AM, Deng-Bryant Y, Johnson D, Tortella FC, Dave JR, Shear DA, Schmid KE. Serum Glial Fibrillary Acidic Protein Predicts Tissue Glial Fibrillary Acidic Protein Break-Down Products and Therapeutic Efficacy after Penetrating Ballistic-Like Brain Injury. J Neurotrauma 2016; 33:147-56. [DOI: 10.1089/neu.2014.3672] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Angela M. Boutté
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Ying Deng-Bryant
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - David Johnson
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Frank C. Tortella
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Jitendra R. Dave
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Deborah A. Shear
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Kara E. Schmid
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland
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18
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Takala RSK, Posti JP, Runtti H, Newcombe VF, Outtrim J, Katila AJ, Frantzén J, Ala-Seppälä H, Kyllönen A, Maanpää HR, Tallus J, Hossain MI, Coles JP, Hutchinson P, van Gils M, Menon DK, Tenovuo O. Glial Fibrillary Acidic Protein and Ubiquitin C-Terminal Hydrolase-L1 as Outcome Predictors in Traumatic Brain Injury. World Neurosurg 2015; 87:8-20. [PMID: 26547005 DOI: 10.1016/j.wneu.2015.10.066] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Biomarkers ubiquitin C-terminal hydrolase-L1 (UCH-L1) and glial fibrillary acidic protein (GFAP) may help detect brain injury, assess its severity, and improve outcome prediction. This study aimed to evaluate the prognostic value of these biomarkers during the first days after brain injury. METHODS Serum UCH-L1 and GFAP were measured in 324 patients with traumatic brain injury (TBI) enrolled in a prospective study. The outcome was assessed using the Glasgow Outcome Scale (GOS) or the extended version, Glasgow Outcome Scale-Extended (GOSE). RESULTS Patients with full recovery had lower UCH-L1 concentrations on the second day and patients with favorable outcome had lower UCH-L1 concentrations during the first 2 days compared with patients with incomplete recovery and unfavorable outcome. Patients with full recovery and favorable outcome had significantly lower GFAP concentrations in the first 2 days than patients with incomplete recovery or unfavorable outcome. There was a strong negative correlation between outcome and UCH-L1 in the first 3 days and GFAP levels in the first 2 days. On arrival, both UCH-L1 and GFAP distinguished patients with GOS score 1-3 from patients with GOS score 4-5, but not patients with GOSE score 8 from patients with GOSE score 1-7. For UCH-L1 and GFAP to predict unfavorable outcome (GOS score ≤ 3), the area under the receiver operating characteristic curve was 0.727, and 0.723, respectively. Neither UCHL-1 nor GFAP was independently able to predict the outcome when age, worst Glasgow Coma Scale score, pupil reactivity, Injury Severity Score, and Marshall score were added into the multivariate logistic regression model. CONCLUSIONS GFAP and UCH-L1 are significantly associated with outcome, but they do not add predictive power to commonly used prognostic variables in a population of patients with TBI of varying severities.
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Affiliation(s)
- Riikka S K Takala
- Perioperative Services, Intensive Care Medicine and Pain Management, Turku University Hospital and University of Turku, Turku, Finland.
| | - Jussi P Posti
- Division of Clinical Neurosciences, Department of Neurosurgery, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital and University of Turku, Turku, Finland; Department of Neurology, University of Turku, Turku, Finland
| | - Hilkka Runtti
- Systems Medicine, VTT Technical Research Centre of Finland, Tampere, Finland
| | - Virginia F Newcombe
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Joanne Outtrim
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Ari J Katila
- Perioperative Services, Intensive Care Medicine and Pain Management, Turku University Hospital and University of Turku, Turku, Finland
| | - Janek Frantzén
- Division of Clinical Neurosciences, Department of Neurosurgery, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital and University of Turku, Turku, Finland
| | | | - Anna Kyllönen
- Department of Neurology, University of Turku, Turku, Finland
| | | | - Jussi Tallus
- Department of Neurology, University of Turku, Turku, Finland
| | | | - Jonathan P Coles
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Peter Hutchinson
- Department of Clinical Neurosciences, Neurosurgery Unit, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Mark van Gils
- Systems Medicine, VTT Technical Research Centre of Finland, Tampere, Finland
| | - David K Menon
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Olli Tenovuo
- Division of Clinical Neurosciences, Department of Rehabilitation and Brain Trauma, Turku University Hospital and University of Turku, Turku, Finland; Department of Neurology, University of Turku, Turku, Finland
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Schroeter ML, Mueller K, Arelin K, Sacher J, Holiga Š, Kratzsch J, Luck T, Riedel-Heller S, Villringer A. Serum Neuron-Specific Enolase Is Related to Cerebellar Connectivity: A Resting-State Functional Magnetic Resonance Imaging Pilot Study. J Neurotrauma 2015; 32:1380-4. [DOI: 10.1089/neu.2013.3163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Matthias L. Schroeter
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
- German Consortium for Frontotemporal Lobar Degeneration, Ulm, Germany
| | - Karsten Mueller
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Katrin Arelin
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Julia Sacher
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - Štefan Holiga
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Jürgen Kratzsch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Tobias Luck
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
- Institute of Social Medicine, Occupational Health and Public Health, University of Leipzig, Leipzig, Germany
| | - Steffi Riedel-Heller
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
- Institute of Social Medicine, Occupational Health and Public Health, University of Leipzig, Leipzig, Germany
| | - Arno Villringer
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany
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Yang Z, Wang KKW. Glial fibrillary acidic protein: from intermediate filament assembly and gliosis to neurobiomarker. Trends Neurosci 2015; 38:364-74. [PMID: 25975510 PMCID: PMC4559283 DOI: 10.1016/j.tins.2015.04.003] [Citation(s) in RCA: 547] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 04/03/2015] [Accepted: 04/07/2015] [Indexed: 12/20/2022]
Abstract
Glial fibrillary acidic protein (GFAP) is an intermediate filament (IF) III protein uniquely found in astrocytes in the central nervous system (CNS), non-myelinating Schwann cells in the peripheral nervous system (PNS), and enteric glial cells. GFAP mRNA expression is regulated by several nuclear-receptor hormones, growth factors, and lipopolysaccharides (LPSs). GFAP is also subject to numerous post-translational modifications (PTMs), while GFAP mutations result in protein deposits known as Rosenthal fibers in Alexander disease. GFAP gene activation and protein induction appear to play a critical role in astroglial cell activation (astrogliosis) following CNS injuries and neurodegeneration. Emerging evidence also suggests that, following traumatic brain and spinal cord injuries and stroke, GFAP and its breakdown products are rapidly released into biofluids, making them strong candidate biomarkers for such neurological disorders.
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Affiliation(s)
- Zhihui Yang
- Program for Neurotrauma, Neuroproteomics, and Biomarkers Research, Departments of Psychiatry and Neuroscience, McKnight Brain Institute, L4-100, University of Florida, 1149 South Newell Drive, Gainesville, FL 32611, USA
| | - Kevin K W Wang
- Program for Neurotrauma, Neuroproteomics, and Biomarkers Research, Departments of Psychiatry and Neuroscience, McKnight Brain Institute, L4-100, University of Florida, 1149 South Newell Drive, Gainesville, FL 32611, USA.
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Paziana K, Korley FK. Emerging themes from the literature on circulating biomarkers of traumatic brain injury. FUTURE NEUROLOGY 2015. [DOI: 10.2217/fnl.15.13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
ABSTRACT Objective diagnosis of traumatic brain injury (TBI) and early prediction of TBI-associated outcome remains a significant clinical challenge with major public health implications. The use of circulating biomarkers to quantify TBI has promise for real-time clinical decision making and may help clinicians determine the need for advanced imaging, and guide an individualized approach to the management of TBI. In this review of the literature, we provide an overview of candidate TBI biomarkers and discuss several themes emerging from the literature on TBI biomarkers. We suggest that the future utility of TBI biomarkers lies in the creation of composite panels of biomarkers tailored to the pursuit of specific clinic questions.
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Affiliation(s)
- Karolina Paziana
- Johns Hopkins University School of Medicine, Department of Emergency Medicine, 1830 East Monument Street, Suite 6-100, Baltimore, MD 21287, USA
| | - Frederick K Korley
- Johns Hopkins University School of Medicine, Department of Emergency Medicine, 1830 East Monument Street, Suite 6-100, Baltimore, MD 21287, USA
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Zenaide PV, Gusmao-Flores D. Biomarkers in septic encephalopathy: a systematic review of clinical studies. Rev Bras Ter Intensiva 2015; 25:56-62. [PMID: 23887761 PMCID: PMC4031860 DOI: 10.1590/s0103-507x2013000100011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 03/20/2013] [Indexed: 01/06/2023] Open
Abstract
Objective The aim of this study was to systematically review the importance of
neuron-specific enolase and S100 beta for diagnosing and monitoring septic
encephalopathy. Methods A PubMed database search was performed to identify studies that evaluated S100
beta and neuron-specific enolase serum levels in patients with sepsis and that
were published between January 2000 and April 2012. Only human studies that
employed an additional method of neurological assessment were selected. Results Nine studies were identified, seven of which associated high concentrations of
S100 beta and neuron-specific enolase with the development of septic
encephalopathy. Four studies also associated these concentrations with increased
mortality. However, two studies did not find such an association when they
evaluated S100 beta levels, and one of these studies did not observe a correlation
between neuron-specific enolase and septic encephalopathy. Conclusion S100 beta and neuron-specific enolase are promising biomarkers for diagnosing and
monitoring patients with septic encephalopathy, but more research is
necessary.
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Affiliation(s)
- Paula Veriato Zenaide
- Academic Medical Course, Escola Bahiana de Medicina e Saúde Pública - Salvador, Brazil.
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Ding J, Ding Z, Yuan F, Guo J, Chen H, Gao W, Wang R, Gu Y, Chen J, Guo Y, Tian H. Proteomics analysis after traumatic brain injury in rats: the search for potential biomarkers. ARQUIVOS DE NEURO-PSIQUIATRIA 2015; 73:342-9. [PMID: 25992526 DOI: 10.1590/0004-282x20150006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/27/2014] [Indexed: 01/28/2023]
Abstract
Many studies of protein expression after traumatic brain injury (TBI) have identified biomarkers for diagnosing or determining the prognosis of TBI. In this study, we searched for additional protein markers of TBI using a fluid perfusion impact device to model TBI in S-D rats. Two-dimensional gel electrophoresis and mass spectrometry were used to identify differentially expressed proteins. After proteomic analysis, we detected 405 and 371 protein spots within a pH range of 3-10 from sham-treated and contused brain cortex, respectively. Eighty protein spots were differentially expressed in the two groups and 20 of these proteins were identified. This study validated the established biomarkers of TBI and identified potential biomarkers that could be examined in future work.
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Affiliation(s)
- Jun Ding
- Shanghai Jiaotong University, China
| | - Zhengang Ding
- Chinese Medicine Hospital of Huangdao District, China
| | | | | | - Hao Chen
- Shanghai Jiaotong University, China
| | | | - Ren Wang
- Shanghai Jiaotong University, China
| | - Yi Gu
- Shanghai Jiaotong University, China
| | | | - Yan Guo
- Shanghai Jiaotong University, China
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Thelin EP, Nelson DW, Bellander BM. Secondary peaks of S100B in serum relate to subsequent radiological pathology in traumatic brain injury. Neurocrit Care 2014; 20:217-29. [PMID: 24146416 DOI: 10.1007/s12028-013-9916-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Patients suffering from severe traumatic brain injury (TBI) often develop secondary brain lesions that may worsen outcome. S100B, a biomarker of brain damage, has been shown to increase in response to secondary cerebral deterioration. The aim of this study was to analyze the occurrence of secondary increases in serum levels of S100B and their relation to potential subsequent radiological pathology present on CT/MRI-scans. METHODS Retrospective study from a trauma level 1 hospital, neuro-intensive care unit. 250 patients suffering from TBI were included. Inclusion required a minimum of two radiological examinations and at least three serum samples of S100B, with at least one >48 h after trauma. RESULTS Secondary pathological findings on CT/MRI, present in 39 % (n = 98) of the patients, were highly correlated to secondary increases of ≥0.05 μg/L S100B (P < 0.0001, pseudo-R (2) 0.532). Significance remained also after adjusting for known important TBI predictors. In addition, secondary radiological findings were significantly correlated to outcome (Glasgow Outcome Score, GOS) in uni-(P < 0.0001, pseudo-R (2) 0.111) and multivariate analysis. The sensitivity and specificity of detecting later secondary radiological findings was investigated at three S100B cut-off levels: 0.05, 0.1, and 0.5 μg/L. A secondary increase of ≥0.05 μg/L had higher sensitivity (80 %) but lower specificity (89 %), compared with a secondary increase of ≥0.5 μg/L (16 % sensitivity, 98 % specificity), to detect secondary radiological findings. CONCLUSIONS Secondary increases in serum levels of S100B, even as low as ≥0.05 μg/L, beyond 48 h after TBI are strongly correlated to the development of clinically significant secondary radiological findings.
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Affiliation(s)
- Eric P Thelin
- Department of Clinical Neuroscience, Section for Neurosurgery, Karolinska Institutet, Karolinska University Hospital Solna, R2:02, 171 76, Stockholm, Sweden,
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Effect of valproic acid and injury on lesion size and endothelial glycocalyx shedding in a rodent model of isolated traumatic brain injury. J Trauma Acute Care Surg 2014; 77:292-7. [PMID: 25058256 DOI: 10.1097/ta.0000000000000333] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND In isolated traumatic brain injury (TBI), little is known about the endothelial response and the effects of endothelial glycocalyx shedding. We have previously shown that treatment with valproic acid (VPA) improves outcomes following TBI and hemorrhagic shock.In this model, we hypothesized that severe isolated TBI would cause shedding of the endothelial glycocalyx, as measured by serum syndecan-1 (sSDC-1) levels. We further hypothesized that VPA treatment would reduce this response and reduce lesion size volume. METHODS Forty Sprague-Dawley rats were allocated to TBI + VPA (n = 8), TBI + saline vehicle control infusion (n = 8), sham + saline vehicle control infusion (n = 6), or sham + VPA (n = 8). TBI animals were subjected to severe controlled cortical impact and killed 6 hours after injury. VPA 300 mg/kg was given as an intravenous bolus 30 minutes after injury. Serum samples were analyzed for sSDC-1, and lesion size was determined on Nissl-stained cryosections. RESULTS sSDC-1 was significantly elevated in injured compared with uninjured animals at 3 hours (p = 0.0009) and 6 hours (p = 0.0007) after injury. This effect was significantly more pronounced in the animals treated with VPA (p = 0.019) 3 hours after injury, in which sSDC-1 levels were also significantly inversely correlated with lesion size (ρ = -0.55, p = 0.038).Lesion size was significantly smaller in TBI + VPA (40.45 mm ± 13.83 mm) as compared with vehicle control (59.57 mm ± 16.83 mm) (p = 0.023). CONCLUSION Severe isolated TBI caused shedding of the endothelial glycocalyx. Treatment with VPA was associated with increased glycocalyx shedding and reduced lesion size volume in injured animal.
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Cheng F, Yuan Q, Yang J, Wang W, Liu H. The prognostic value of serum neuron-specific enolase in traumatic brain injury: systematic review and meta-analysis. PLoS One 2014; 9:e106680. [PMID: 25188406 PMCID: PMC4154726 DOI: 10.1371/journal.pone.0106680] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 07/30/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Several studies have suggested that neuron-specific enolase (NSE) in serum may be a biomarker of traumatic brain injury. However, whether serum NSE levels correlate with outcomes remains unclear. The purpose of this review was to evaluate the prognostic value of serum NSE protein after traumatic brain injury. METHODS PubMed and Embase were searched for relevant studies published up to October 2013. Full-text publications on the relationship of NSE to TBI were included if the studies concerned patients with closed head injury, NSE levels in serum after injury, and Glasgow Outcome Scale (GOS) or Extended GOS (GOSE) scores or mortality. Study design, inclusion criteria, assay, blood sample collection time, NSE cutoff, sensitivity and specificity of NSE for mortality prediction (if sufficient information was provided to calculate these values), and main outcomes were recorded. RESULTS Sixteen studies were eligible for the current meta-analysis. In the six studies comparing NSE concentrations between TBI patients who died and those who survived, NSE concentrations correlated with mortality (M.D. 0.28, 95% confidence interval (CI), 0.21 to 0.34; I2 55%). In the eight studies evaluating GOS or GOSE, patients with unfavorable outcomes had significantly higher NSE concentrations than those with favorable outcomes (M.D. 0.24, 95% CI, 0.17 to 0.31; I2 64%). From the studies providing sufficient data, the pooled sensitivity and specificity for mortality were 0.79 and 0.50, and 0.72 and 0.66 for unfavorable neurological prognosis, respectively. The areas under the SROC curve (AUC) of NSE concentrations were 0.73 (95% CI, 0.66-0.80) for unfavorable outcome and 0.76 (95% CI, 0.62-0.90) for mortality. CONCLUSIONS Mortality and unfavorable outcome were significantly associated with greater NSE concentrations. In addition, NSE has moderate discriminatory ability to predict mortality and neurological outcome in TBI patients. The optimal discrimination cutoff values and optimal sampling time remain uncertain because of significant variations between studies.
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Affiliation(s)
- Feng Cheng
- Department of Neurosurgery, The First People's Hospital of Kunshan, affiliated with Jiangsu University, Suzhou, PR China
| | - Qiang Yuan
- Department of Neurosurgery, Huashan Hospital, affiliated to Fudan University, Shanghai, PR China
| | - Jian Yang
- Department of Neurosurgery, The First People's Hospital of Kunshan, affiliated with Jiangsu University, Suzhou, PR China
| | - Wenming Wang
- Department of Neurosurgery, The First People's Hospital of Kunshan, affiliated with Jiangsu University, Suzhou, PR China
| | - Hua Liu
- Department of Neurosurgery, The First People's Hospital of Kunshan, affiliated with Jiangsu University, Suzhou, PR China
- * E-mail:
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Bergman L, Akhter T, Wikström AK, Wikström J, Naessen T, Åkerud H. Plasma levels of S100B in preeclampsia and association with possible central nervous system effects. Am J Hypertens 2014; 27:1105-11. [PMID: 24610883 PMCID: PMC4125339 DOI: 10.1093/ajh/hpu020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND S100B is supposed to be a peripheral biomarker of central nervous system (CNS) injury. The purpose of this study was to compare levels of S100B in women with preeclampsia with levels in healthy pregnant control subjects and furthermore to analyze levels of S100B in relation to possible CNS effects. METHODS A cross-sectional case–control study in antenatal care centers in Uppsala, Sweden, was performed. Fifty-three women with preeclampsia and 58 healthy pregnant women were recruited at similar gestational length; women with preeclampsia were recruited at time of diagnosis, and control subjects were recruited during their routine visit to an antenatal clinic. Plasma samples were collected, and levels of S100B were analyzed with an enzyme-linked immunosorbent assay. Information about demographic and clinical characteristics, including symptoms related to CNS affection, was collected from the medical records. The main outcome measures were plasma levels of S100B and possible CNS effects. RESULTS Levels of S100B were significantly higher among women with preeclampsia than among control subjects (0.12 µg/L vs. 0.07 µg/L; P < 0.001). In preeclampsia, there was a significant association between high levels of S100B and visual disturbances (P < 0.05). CONCLUSIONS S100B is increased among women with preeclampsia, and high levels of S100B associate with visual disturbances, which might reflect CNS affection in women with preeclampsia.
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Affiliation(s)
- Lina Bergman
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden; Centre for Clinical Research, Dalarna, Sweden;
| | - Tansim Akhter
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Anna-Karin Wikström
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Johan Wikström
- Department of Radiology, Oncology and Radiation Science, Uppsala University, Uppsala, Sweden
| | - Tord Naessen
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Helena Åkerud
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
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Lange RP, Everett A, Dulloor P, Korley FK, Bettegowda C, Blair C, Grossman SA, Holdhoff M. Evaluation of eight plasma proteins as candidate blood-based biomarkers for malignant gliomas. Cancer Invest 2014; 32:423-9. [PMID: 25019213 DOI: 10.3109/07357907.2014.933237] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Eight brain-derived proteins were evaluated regarding their potential for further development as a blood-based biomarker for malignant gliomas. Plasma levels for glial fibrillary acidic protein, neurogranin, brain-derived neurotrophic factor, intracellular adhesion molecule 5, metallothionein-3, beta-synuclein, S100 and neuron specific enolase were tested in plasma of 23 patients with high-grade gliomas (WHO grade IV), 11 low-grade gliomas (WHO grade II), and 15 healthy subjects. Compared to the healthy controls, none of the proteins appeared to be specific for glioblastomas. However, the data are suggestive of higher protein levels in gliosarcomas (n = 2), which may deserve further exploration.
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Affiliation(s)
- Ryan P Lange
- The Johns Hopkins University, School of Medicine, Departments of1 Pediatrics2 Emergency Medicine3 Neurosurgery,4 and Oncology,5 Baltimore, MD, USA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins , Baltimore, MD , USA 6
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Walder B, Robin X, Rebetez MML, Copin JC, Gasche Y, Sanchez JC, Turck N. The prognostic significance of the serum biomarker heart-fatty acidic binding protein in comparison with s100b in severe traumatic brain injury. J Neurotrauma 2014; 30:1631-7. [PMID: 23590685 DOI: 10.1089/neu.2012.2791] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The outcome after severe traumatic brain injury (TBI) is largely unfavorable, with approximately two thirds of patients suffering from severe disabilities or dying during the first 6 months. Existing predictive models displayed only limited utility for outcome prediction in individual patients. Time courses of heart-fatty acidic binding protein (H-FABP) and their association with outcome were investigated and compared with S100b. Forty-nine consecutive patients with severe TBI (sTBI; Head component of the Abbreviated Injury Scale [HAIS] >3) with mono and multiple trauma were enrolled in this study. Enzyme-linked immunosorbent assay measured blood concentrations of H-FABP and S100b at 6, 12, 24, and 48 h after TBI. Outcome measures were conscious state at 14 days (Glasgow Coma Scale), disability (Glasgow Outcome Scale Extended; GOSE), and mortality at 3 months. Univariate logistic regression analysis and receiver operating characteristic curves analysis were carried out. Maximal H-FABP and S100b concentrations were observed at 6 h after TBI (34.4±34.0 and 0.64±0.99 ng/mL, respectively). Patients with multi-trauma had significantly higher H-FABP concentrations at 24 and 48 h (22.6±25.6 and 12.4±18.2 ng/mL, respectively), compared to patients with mono trauma (6.9±5.1 and 3.7±4.2 ng/mL, respectively). In the first 48 h, H-FABP and S100b were inversely correlated with the GOSE at 3 months; H-FABP at 48 h predicted mortality with 75% sensitivity and 93% specificity. Early blood levels of H-FABP after sTBI have prognostic significance for survival and disability.
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Affiliation(s)
- Bernhard Walder
- 1 Division of Anaesthesiology, University Hospitals of Geneva , Geneva, Switzerland
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Yan EB, Satgunaseelan L, Paul E, Bye N, Nguyen P, Agyapomaa D, Kossmann T, Rosenfeld JV, Morganti-Kossmann MC. Post-traumatic hypoxia is associated with prolonged cerebral cytokine production, higher serum biomarker levels, and poor outcome in patients with severe traumatic brain injury. J Neurotrauma 2014; 31:618-29. [PMID: 24279428 DOI: 10.1089/neu.2013.3087] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Secondary hypoxia is a known contributor to adverse outcomes in patients with traumatic brain injury (TBI). Based on the evidence that hypoxia and TBI in isolation induce neuroinflammation, we investigated whether TBI combined with hypoxia enhances cerebral cytokine production. We also explored whether increased concentrations of injury biomarkers discriminate between hypoxic (Hx) and normoxic (Nx) patients, correlate to worse outcome, and depend on blood-brain barrier (BBB) dysfunction. Forty-two TBI patients with Glasgow Coma Scale ≤8 were recruited. Cerebrospinal fluid (CSF) and serum were collected over 6 days. Patients were divided into Hx (n=22) and Nx (n=20) groups. Eight cytokines were measured in the CSF; albumin, S100, myelin basic protein (MBP) and neuronal specific enolase (NSE) were quantified in serum. CSF/serum albumin quotient was calculated for BBB function. Glasgow Outcome Scale Extended (GOSE) was assessed at 6 months post-TBI. Production of granulocye macrophage-colony stimulating factor (GM-CSF) was higher, and profiles of GM-CSF, interferon (IFN)-γ and, to a lesser extent, tumor necrosis factor (TNF), were prolonged in the CSF of Hx but not Nx patients at 4-5 days post-TBI. Interleukin (IL)-2, IL-4, IL-6, and IL-10 increased similarly in both Hx and Nx groups. S100, MBP, and NSE were significantly higher in Hx patients with unfavorable outcome. Among these three biomarkers, S100 showed the strongest correlations to GOSE after TBI-Hx. Elevated CSF/serum albumin quotients lasted for 5 days post-TBI and displayed similar profiles in Hx and Nx patients. We demonstrate for the first time that post-TBI hypoxia is associated with prolonged neuroinflammation, amplified extravasation of biomarkers, and poor outcome. S100 and MBP could be implemented to track the occurrence of post-TBI hypoxia, and prompt adequate treatment.
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Affiliation(s)
- Edwin B Yan
- 1 National Trauma Research Institute, The Alfred Hospital , Melbourne, Australia
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Wilcock DM, Griffin WST. Down's syndrome, neuroinflammation, and Alzheimer neuropathogenesis. J Neuroinflammation 2013; 10:84. [PMID: 23866266 PMCID: PMC3750399 DOI: 10.1186/1742-2094-10-84] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 05/28/2013] [Indexed: 12/26/2022] Open
Abstract
Down syndrome (DS) is the result of triplication of chromosome 21 (trisomy 21) and is the prevailing cause of mental retardation. In addition to the mental deficiencies and physical anomalies noted at birth, triplication of chromosome 21 gene products results in the neuropathological and cognitive changes of Alzheimer's disease (AD). Mapping of the gene that encodes the precursor protein (APP) of the β-amyloid (Aβ) present in the Aβ plaques in both AD and DS to chromosome 21 was strong evidence that this chromosome 21 gene product was a principal neuropathogenic culprit in AD as well as DS. The discovery of neuroinflammatory changes, including dramatic proliferation of activated glia overexpressing a chromosome 2 gene product--the pluripotent immune cytokine interleukin-1 (IL-1)--and a chromosome 21 gene product--S100B--in the brains of fetuses, neonates, and children with DS opened the possibility that early events in Alzheimer pathogenesis were driven by cytokines. The specific chromosome 21 gene products and the complexity of the mechanisms they engender that give rise to the neuroinflammatory responses noted in fetal development of the DS brain and their potential as accelerators of Alzheimer neuropathogenesis in DS are topics of this review, particularly as they relate to development and propagation of neuroinflammation, the consequences of which are recognized clinically and neuropathologically as Alzheimer's disease.
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Affiliation(s)
- Donna M Wilcock
- Department of Physiology, Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - W Sue T Griffin
- Donald W. Reynolds Department of Geriatrics, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, 629 Jack Stephens Dr., Little Rock, AR 72205, USA
- The Geriatric Research Education Clinical Center, Central Arkansas HealthCare System, Little Rock, AR, USA
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Tolan NV, Vidal-Folch N, Algeciras-Schimnich A, Singh RJ, Grebe SKG. Individualized correction of neuron-specific enolase (NSE) measurement in hemolyzed serum samples. Clin Chim Acta 2013; 424:216-21. [PMID: 23778024 DOI: 10.1016/j.cca.2013.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 05/22/2013] [Accepted: 06/06/2013] [Indexed: 11/17/2022]
Abstract
BACKGROUND Accuracy of serum neuron-specific enolase (NSE) measurement is paramount, particularly in the context of neurological outcome prognostication. However, NSE measurements are compromised by even slight hemolysis, as it is abundant in red blood cells (RBCs). We derived and validated an individualized hemolysis correction equation in an attempt to reduce the current rejection rate of 14% at our institution. METHODS Intracellular NSE was measured in RBC lysates to determine concentration variability. A correction equation was derived, accounting for both RBC-derived NSE false-elevation and hemoglobin-derived signal quenching. The performance of this individualized correction was evaluated in intentionally hemolyzed samples and accuracy was compared to a generalized correction. RESULTS Significant inter-individual variability of RBC NSE was observed, with an almost two-fold range (15.7-28.5 ng NSE/mg Hb, p<0.001); intra-individual variability was insignificant. The individualized hemolysis correction equation derived: NSE(corr)=NSE(meas)-(Hb(serum))(NSE(RBCs/Hb))+0.0844(Hb(serum))+1.1 corrected 95% of the intentionally hemolyzed samples to within ±5 ng/ml of corresponding baseline NSE concentrations, compared to 74% using a generalized formula. CONCLUSIONS The individualized hemolysis correction provides increased accuracy in the estimation of true serum NSE concentrations for hemolyzed samples, compared to a generalized approach, by accounting for inter-individual RBC NSE variability. Incorporating this correction should reduce sample rejection rates and overall health care costs.
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Affiliation(s)
- Nicole V Tolan
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, United States
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Yokobori S, Hosein K, Burks S, Sharma I, Gajavelli S, Bullock R. Biomarkers for the clinical differential diagnosis in traumatic brain injury--a systematic review. CNS Neurosci Ther 2013; 19:556-65. [PMID: 23710877 DOI: 10.1111/cns.12127] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 04/17/2013] [Accepted: 04/18/2013] [Indexed: 01/24/2023] Open
Abstract
Rapid triage and decision-making in the treatment of traumatic brain injury (TBI) present challenging dilemma in "resource poor" environments such as the battlefield and developing areas of the world. There is an urgent need for additional tools to guide treatment of TBI. The aim of this review is to establish the possible use of diagnostic TBI biomarkers in (1) identifying diffuse and focal brain injury and (2) assess their potential for determining outcome, intracranial pressure (ICP), and responses to therapy. At present, there is insufficient literature to support a role for diagnostic biomarkers in distinguishing focal and diffuse injury or for accurate determination of raised ICP. Presently, neurofilament (NF), S100β, glial fibrillary acidic protein (GFAP), and ubiquitin carboxyl terminal hydrolase-L1 (UCH-L1) seemed to have the best potential as diagnostic biomarkers for distinguishing focal and diffuse injury, whereas C-tau, neuron-specific enolase (NSE), S100β, GFAP, and spectrin breakdown products (SBDPs) appear to be candidates for ICP reflective biomarkers. With the combinations of different pathophysiology related to each biomarker, a multibiomarker analysis seems to be effective and would likely increase diagnostic accuracy. There is limited research focusing on the differential diagnostic properties of biomarkers in TBI. This fact warrants the need for greater efforts to innovate sensitive and reliable biomarkers. We advocate awareness and inclusion of the differentiation of injury type and ICP elevation in further studies with brain injury biomarkers.
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Affiliation(s)
- Shoji Yokobori
- Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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Scolletta S, Donadello K, Santonocito C, Franchi F, Taccone FS. Biomarkers as predictors of outcome after cardiac arrest. Expert Rev Clin Pharmacol 2013; 5:687-99. [PMID: 23234326 DOI: 10.1586/ecp.12.64] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cardiac arrest (CA) is a major health and economic problem. Management of patients resuscitated from CA is challenging for clinicians, and the mortality rate of those who achieve return of spontaneous circulation remains high. Hypoxic brain injury, cardiovascular abnormalities and systemic ischemia/reperfusion response characterize the so-called 'postcardiac arrest syndrome', which could lead to multiple organ failure and poor outcome after CA. The magnitude of these disorders differs in individual patients, mainly based on the cause and duration of CA and on the severity of the ischemic episode. Prognostication of outcome after CA is of importance because it could help physicians on triage decisions and readdress the overall management. A number of factors are thought to influence the prognosis of patients after CA, but due to the heterogeneity of CA population and scenarios no single factor has been identified as a reliable predictor of outcome and the timing and optimal approach to prognostication is still controversial. Biomarkers represent a growing area of interest in this field, as they may provide clinicians with early information on the severity of organ dysfunction to make a decision on clinical strategies and prognosticate outcome. In this article, the authors will focus on cardiac, neurological and inflammatory biomarkers as potential predictors of outcome after CA.
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Affiliation(s)
- Sabino Scolletta
- Department of Intensive Care, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik, Belgium.
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Oxymétrie cérébrale. MEDECINE INTENSIVE REANIMATION 2013. [DOI: 10.1007/s13546-012-0540-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Boutté AM, Yao C, Kobeissy F, May Lu XC, Zhang Z, Wang KK, Schmid K, Tortella FC, Dave JR. Proteomic analysis and brain-specific systems biology in a rodent model of penetrating ballistic-like brain injury. Electrophoresis 2012; 33:3693-704. [DOI: 10.1002/elps.201200196] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 08/10/2012] [Accepted: 09/04/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Angela M. Boutté
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
| | - Changping Yao
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
| | - Firas Kobeissy
- Center for Neuroproteomics and Biomarkers Research; Department of Psychiatry and Neuroscience; University of Florida; Gainesville; FL; USA
| | - Xi-Chun May Lu
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
| | - Zhiqun Zhang
- Center for Neuroproteomics and Biomarkers Research; Department of Psychiatry and Neuroscience; University of Florida; Gainesville; FL; USA
| | - Kevin K. Wang
- Center for Neuroproteomics and Biomarkers Research; Department of Psychiatry and Neuroscience; University of Florida; Gainesville; FL; USA
| | - Kara Schmid
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
| | - Frank C. Tortella
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
| | - Jitendra R. Dave
- Brain Trauma Neuroprotection and Neurorestoration Branch; Walter Reed Army Institute of Research; Silver Spring; MD; USA
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Schmid KE, Tortella FC. The diagnosis of traumatic brain injury on the battlefield. Front Neurol 2012; 3:90. [PMID: 22701447 PMCID: PMC3373009 DOI: 10.3389/fneur.2012.00090] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 05/18/2012] [Indexed: 01/26/2023] Open
Abstract
The conflicts in Iraq and Afghanistan have placed an increased awareness on traumatic brain injury (TBI). Various publications have estimated the incidence of TBI for our deployed servicemen, however all have been based on extrapolations of data sets or subjective evaluations due to our current method of diagnosing a TBI. Therefore it has been difficult to get an accurate rate and severity of deployment related TBIs, or the incidence of multiple TBIs our service members are experiencing. As such, there is a critical need to develop a rapid objective method to diagnose TBI on the battlefield. Because of the austere environment of the combat theater the ideal diagnostic platform faces numerous logistical constraints not encountered in civilian trauma centers. Consequently, a simple blood test to diagnosis TBI represents a viable option for the military. This perspective will provide information on some of the current options for TBI biomarkers, detail concerning battlefield constraints, and a possible acquisition strategy for the military. The end result is a non-invasive TBI diagnostic platform capable of providing much needed advances in objective triage capabilities and improved clinical management of in-Theater TBI.
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Affiliation(s)
- Kara E Schmid
- Brain Trauma Neuroprotection and Neurorestoration Department, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research Silver Spring, MD, USA
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