Valproic Acid Treatment Decreases Serum Glial Fibrillary Acidic Protein and Neurofilament Light Chain Levels in Swine Subjected to Traumatic Brain Injury

2018 ◽  
Vol 35 (10) ◽  
pp. 1185-1191 ◽  
Author(s):  
Frederick K. Korley ◽  
Vahagn C. Nikolian ◽  
Aaron M. Williams ◽  
Isabel S. Dennahy ◽  
Michael Weykamp ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Valproic Acid ◽  
Brain Injury ◽  
Glial Fibrillary Acidic Protein ◽  
Light Chain ◽  
Acid Treatment ◽  
Acidic Protein ◽  
Neurofilament Light Chain ◽  
Neurofilament Light

scholarly journals Plasma glial fibrillary acidic protein and neurofilament light chain, but not tau, are biomarkers of sports-related mild traumatic brain injury

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Etienne Laverse ◽  
Tong Guo ◽  
Karl Zimmerman ◽  
Martha S Foiani ◽  
Bharat Velani ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Head Injury ◽  
Glial Fibrillary Acidic Protein ◽  
Mild Traumatic Brain Injury ◽  
Light Chain ◽  
Acidic Protein ◽  
Post Injury ◽  
Neurofilament Light Chain ◽  
Neurofilament Light

Abstract Mild traumatic brain injury is a relatively common event in contact sports and there is increasing interest in the long-term neurocognitive effects. The diagnosis largely relies on symptom reporting and there is a need for objective tools to aid diagnosis and prognosis. There are recent reports that blood biomarkers could potentially help triage patients with suspected injury and normal CT findings. We have measured plasma concentrations of glial and neuronal proteins and explored their potential in the assessment of mild traumatic brain injury in contact sport. We recruited a prospective cohort of active male rugby players, who had pre-season baseline plasma sampling. From this prospective cohort, we recruited 25 players diagnosed with mild traumatic brain injury. We sampled post-match rugby players without head injuries as post-match controls. We measured plasma neurofilament light chain, tau and glial fibrillary acidic protein levels using ultrasensitive single molecule array technology. The data were analysed at the group and individual player level. Plasma glial fibrillary acidic protein concentration was significantly increased 1-h post-injury in mild traumatic brain injury cases compared to the non-injured group (P = 0.017). Pairwise comparison also showed that glial fibrillary acidic protein levels were higher in players after a head injury in comparison to their pre-season levels at both 1-h and 3- to 10-day post-injury time points (P = 0.039 and 0.040, respectively). There was also an increase in neurofilament light chain concentration in brain injury cases compared to the pre-season levels within the same individual at both time points (P = 0.023 and 0.002, respectively). Tau was elevated in both the non-injured control group and the 1-h post-injury group compared to pre-season levels (P = 0.007 and 0.015, respectively). Furthermore, receiver operating characteristic analysis showed that glial fibrillary acidic protein and neurofilament light chain can separate head injury cases from control players. The highest diagnostic power was detected when biomarkers were combined in differentiating 1-h post-match control players from 1-h post-head injury players (area under curve 0.90, 95% confidence interval 0.79–1.00, P < 0.0002). The brain astrocytic marker glial fibrillary acidic protein is elevated in blood 1 h after mild traumatic brain injury and in combination with neurofilament light chain displayed the potential as a reliable biomarker for brain injury evaluation. Plasma total tau is elevated following competitive rugby with and without a head injury, perhaps related to peripheral nerve trauma and therefore total tau does not appear to be suitable as a blood biomarker.

scholarly journals Early Levels of Glial Fibrillary Acidic Protein and Neurofilament Light Protein in Predicting the Outcome of Mild Traumatic Brain Injury

2019 ◽  
Vol 36 (10) ◽  
pp. 1551-1560 ◽  
Author(s):  
Iftakher Hossain ◽  
Mehrbod Mohammadian ◽  
Riikka S.K. Takala ◽  
Olli Tenovuo ◽  
Linnéa Lagerstedt ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Glial Fibrillary Acidic Protein ◽  
Mild Traumatic Brain Injury ◽  
Acidic Protein ◽  
Neurofilament Light

Absence of attack-independent neuroaxonal injury in MOG antibody-associated disease: Longitudinal assessment of serum neurofilament light chain

2021 ◽  
pp. 135245852110637
Author(s):  
Jae-Won Hyun ◽  
So Yeon Kim ◽  
Yeseul Kim ◽  
Na Young Park ◽  
Ki Hoon Kim ◽  
...  
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Single Molecule ◽  
Light Chain ◽  
Myelin Oligodendrocyte Glycoprotein ◽  
Acidic Protein ◽  
Healthy Controls ◽  
Longitudinal Assessment ◽  
Neurofilament Light Chain ◽  
Neurofilament Light

To evaluate the occurrence of attack-independent neuroaxonal and astrocytic damage in myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), serum neurofilament light chain (sNfL) and serum glial fibrillary acidic protein (sGFAP) levels were longitudinally measured in 102 sera using a single-molecule array assay. Sera from 15 adults with relapsing MOGAD with available longitudinal samples for the median 24-month follow-up and 26 age-/sex-matched healthy controls were analyzed. sNfL levels were significantly elevated in all clinical attacks, where the levels decreased below or close to cut-off value within 6 months after attacks. sNfL levels were consistently low during inter-attack periods. In contrast, sGFAP levels did not increase in most clinical attacks and remained low during follow-up. Significant neuroaxonal damage was observed at clinical attacks, while attack-independent neuroaxonal and astrocytic injury was absent in MOGAD.

scholarly journals Neurofilament light chain level in traumatic brain injury

Medicine ◽  
2020 ◽  
Vol 99 (38) ◽  
pp. e22363 ◽  
Author(s):  
Wenyan Gao ◽  
Zhongshan Zhang ◽  
Xiaoling Lv ◽  
Qing Wu ◽  
Jing Yan ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Light Chain ◽  
Neurofilament Light Chain ◽  
Neurofilament Light ◽  
Chain Level

scholarly journals Plasma neurofilament light chain and glial fibrillary acidic protein predict stroke in CADASIL

2020 ◽  
Author(s):  
Chen Chih-Hao ◽  
Yu-Wen Cheng ◽  
Ya-Fang Chen ◽  
Sung-Chun Tang ◽  
Jiann-Shing Jeng
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Light Chain ◽  
Odds Ratio ◽  
Acidic Protein ◽  
White Matter Hyperintensity ◽  
Stroke Recurrence ◽  
Neurofilament Light Chain ◽  
Neurofilament Light ◽  
Plasma Biomarkers

Abstract Background Stroke remains the most cumbersome disease burden in patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). This study aimed to investigate whether plasma biomarkers can reflect disease severity and predict stroke recurrence in CADASIL patients. Methods Sixty-three CADASIL patients (mean age 58.9±9.3 years old, male 63%) from a multicenter registry and 17 controls were recruited. Plasma biomarkers, namely neurofilament light chain (NfL), glial fibrillary acidic protein (GFAP), tau, and ubiquitin carboxy-terminal hydrolase L1 (UCHL1), were measured using an ultra-sensitive single molecule array at baseline. Neuroimaging markers assessed included the Fazekas scale of white matter hyperintensity, numbers of lacunes and cerebral microbleeds (CMBs). Cox proportional hazards regression models were applied to calculate the hazard ratio (HR) of plasma biomarkers at baseline for predicting incident stroke during follow-up. Results Plasma NfL, GFAP, and UCHL1 levels were significantly elevated in the CADASIL patients than in the controls. Among the CADASIL patients, both plasma NfL and GFAP levels positively correlated with the numbers of CMBs (r = 0.32 and r = 0.37, respectively; both p < 0.05). Higher plasma levels of NfL and GFAP were associated with any stroke (odds ratio 2.02, 95% confidence interval [CI] 1.06–3.87) and ICH (odds ratio 2.06, 95% CI 1.26–3.35) at baseline, respectively. Within a mean follow-up period of 3.1 Common.EditSubmissionSteps.Transform.EquationText 2.1 years, 10 patients (16%) had incident stroke and 6 of them were ICH. Higher baseline NfL (HR 1.93, 95% CI 1.19–3.13) predicted any incident stroke, whereas higher GFAP (HR 2.80, 95% CI 1.21–6.53) predicted incident ICH. Conclusions In CADASIL patients, plasma NfL can be a promising biomarker for monitoring incident stroke, whereas GFAP may have a role in cerebral hemorrhage.

scholarly journals Plasma glial fibrillary acidic protein and neurofilament light chain for the diagnostic and prognostic evaluation of frontotemporal dementia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Nuole Zhu ◽  
Miguel Santos-Santos ◽  
Ignacio Illán-Gala ◽  
Victor Montal ◽  
Teresa Estellés ◽  
...  
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Cognitive Decline ◽  
Frontotemporal Dementia ◽  
Cortical Thickness ◽  
Light Chain ◽  
Diagnostic Performance ◽  
Acidic Protein ◽  
Neurofilament Light Chain ◽  
Neurofilament Light

Abstract Background Astrocytes play an essential role in neuroinflammation and are involved in the pathogenesis of neurodenegerative diseases. Studies of glial fibrillary acidic protein (GFAP), an astrocytic damage marker, may help advance our understanding of different neurodegenerative diseases. In this study, we investigated the diagnostic performance of plasma GFAP (pGFAP), plasma neurofilament light chain (pNfL) and their combination for frontotemporal dementia (FTD) and Alzheimer’s disease (AD) and their clinical utility in predicting disease progression. Methods pGFAP and pNfL concentrations were measured in 72 FTD, 56 AD and 83 cognitively normal (CN) participants using the Single Molecule Array technology. Of the 211 participants, 199 underwent cerebrospinal (CSF) analysis and 122 had magnetic resonance imaging. We compared cross-sectional biomarker levels between groups, studied their diagnostic performance and assessed correlation between CSF biomarkers, cognitive performance and cortical thickness. The prognostic performance was investigated, analyzing cognitive decline  through group comparisons by tertile. Results Unlike pNfL, which was increased similarly in both clinical groups, pGFAP was increased in FTD but lower than in AD (all P < 0.01). Combination of both plasma markers improved the diagnostic performance to discriminate FTD from AD (area under the curve [AUC]: combination 0.78; pGFAP 0.7; pNfL 0.61, all P < 0.05). In FTD, pGFAP correlated with cognition, CSF and plasma NfL, and cortical thickness (all P < 0.05). The higher tertile of pGFAP was associated with greater change in MMSE score and poor cognitive outcome during follow-up both in FTD (1.40 points annually, hazard ratio [HR] 3.82, P < 0.005) and in AD (1.20 points annually, HR 2.26, P < 0.005). Conclusions pGFAP and pNfL levels differ in FTD and AD, and their combination is useful for distinguishing between the two diseases. pGFAP could also be used to track disease severity and predict greater cognitive decline during follow-up in patients with FTD.

scholarly journals Plasma neurofilament light chain and glial fibrillary acidic protein predict stroke in CADASIL

2020 ◽  
Author(s):  
Chih-Hao Chen ◽  
Yu-Wen Cheng ◽  
Ya-Fang Chen ◽  
Sung-Chun Tang ◽  
Jiann-Shing Jeng
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Light Chain ◽  
Odds Ratio ◽  
Acidic Protein ◽  
White Matter Hyperintensity ◽  
Stroke Recurrence ◽  
Neurofilament Light Chain ◽  
Neurofilament Light ◽  
Plasma Biomarkers

Abstract Background Stroke remains the most cumbersome disease burden in patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). This study aimed to investigate whether plasma biomarkers can reflect disease severity and predict stroke recurrence in CADASIL patients. Methods Sixty-three CADASIL patients (mean age 58.9±9.3 years old, male 63%) from a multicenter registry and 17 controls were recruited. Plasma biomarkers, namely neurofilament light chain (NfL), glial fibrillary acidic protein (GFAP), tau, and ubiquitin carboxy-terminal hydrolase L1 (UCHL1), were measured using an ultra-sensitive single molecule array at baseline. Neuroimaging markers assessed included the Fazekas scale of white matter hyperintensity, numbers of lacunes and cerebral microbleeds (CMBs). Cox proportional hazards regression models were applied to calculate the hazard ratio (HR) of plasma biomarkers at baseline for predicting incident stroke during follow-up. Results Plasma NfL, GFAP, and UCHL1 levels were significantly elevated in the CADASIL patients than in the controls. Among the CADASIL patients, both plasma NfL and GFAP levels positively correlated with the numbers of CMBs (r = 0.32 and r = 0.37, respectively; both p < 0.05). Higher plasma levels of NfL and GFAP were associated with any stroke (odds ratio 2.02, 95% confidence interval [CI] 1.06–3.87) and ICH (odds ratio 2.06, 95% CI 1.26–3.35) at baseline, respectively. Within a mean follow-up period of 3.1 Common.EditSubmissionSteps.Transform.EquationText 2.1 years, 10 patients (16%) had incident stroke and 6 of them were ICH. Higher baseline NfL (HR 1.93, 95% CI 1.19–3.13) predicted any incident stroke, whereas higher GFAP (HR 2.80, 95% CI 1.21–6.53) predicted incident ICH. Conclusions In CADASIL patients, plasma NfL can be a promising biomarker for monitoring incident stroke, whereas GFAP may have a role in cerebral hemorrhage.

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