LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 190

Search options

  1. Article ; Online: HMG-CoA Reductase Inhibitors for Traumatic Brain Injury.

    Katlowitz, Kalman / Gopinath, Shankar / Cruz Navarro, Jovany / Robertson, Claudia

    Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics

    2023  Volume 20, Issue 6, Page(s) 1538–1545

    Abstract: Traumatic brain injuries (TBIs) are associated with high morbidity and mortality due to both the original insult as well as the destructive biological response that follows. Medical management aims to slow or even halt secondary neurological injury while ...

    Abstract Traumatic brain injuries (TBIs) are associated with high morbidity and mortality due to both the original insult as well as the destructive biological response that follows. Medical management aims to slow or even halt secondary neurological injury while simultaneously laying the groundwork for recovery. Statins are one class of medications that is showing increased promise in the management of TBI. Used extensively in cardiovascular disease, these drugs were originally developed as competitive inhibitors within the cholesterol production pipeline. They are now used in diverse disease states due to their pleiotropic effects on other biological processes such as inflammation and angiogenesis. Preclinical studies, retrospective reviews, and randomized clinical trials have shown a variety of benefits in the management of TBI, but to date, no large-scale randomized clinical trial has been performed. Despite this limitation, statins' early promise and well-tolerated side effect profile make them a promising new tool in the management of TBIs. More bench and clinical studies are needed to delineate proper treatment regimens as well as understand their true potential.
    MeSH term(s) Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use ; Retrospective Studies ; Cholesterol ; Brain Injuries, Traumatic/drug therapy ; Inflammation/drug therapy ; Randomized Controlled Trials as Topic
    Chemical Substances Hydroxymethylglutaryl-CoA Reductase Inhibitors ; Cholesterol (97C5T2UQ7J)
    Language English
    Publishing date 2023-06-23
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2316693-9
    ISSN 1878-7479 ; 1933-7213
    ISSN (online) 1878-7479
    ISSN 1933-7213
    DOI 10.1007/s13311-023-01399-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: A Precision Medicine Agenda in Traumatic Brain Injury.

    Cruz Navarro, Jovany / Ponce Mejia, Lucido L / Robertson, Claudia

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 713100

    Abstract: Traumatic brain injury remains a leading cause of death and disability across the globe. Substantial uncertainty in outcome prediction continues to be the rule notwithstanding the existing prediction models. Additionally, despite very promising ... ...

    Abstract Traumatic brain injury remains a leading cause of death and disability across the globe. Substantial uncertainty in outcome prediction continues to be the rule notwithstanding the existing prediction models. Additionally, despite very promising preclinical data, randomized clinical trials (RCTs) of neuroprotective strategies in moderate and severe TBI have failed to demonstrate significant treatment effects. Better predictive models are needed, as the existing validated ones are more useful in prognosticating poor outcome and do not include biomarkers, genomics, proteonomics, metabolomics, etc. Invasive neuromonitoring long believed to be a "game changer" in the care of TBI patients have shown mixed results, and the level of evidence to support its widespread use remains insufficient. This is due in part to the extremely heterogenous nature of the disease regarding its etiology, pathology and severity. Currently, the diagnosis of traumatic brain injury (TBI) in the acute setting is centered on neurological examination and neuroimaging tools such as CT scanning and MRI, and its treatment has been largely confronted using a "one-size-fits-all" approach, that has left us with many unanswered questions. Precision medicine is an innovative approach for TBI treatment that considers individual variability in genes, environment, and lifestyle and has expanded across the medical fields. In this article, we briefly explore the field of precision medicine in TBI including biomarkers for therapeutic decision-making, multimodal neuromonitoring, and genomics.
    Language English
    Publishing date 2022-03-16
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.713100
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Transcriptomic Signatures of Neuronally Derived Extracellular Vesicles Reveal the Presence of Olfactory Receptors in Clinical Samples from Traumatic Brain Injury Patients.

    Bhomia, Manish / Feng, Yanru / Deleon, Piper / Robertson, Claudia S / Kobeissy, Firas / Wang, Kevin K / Knollmann-Ritschel, Barbara

    International journal of molecular sciences

    2024  Volume 25, Issue 5

    Abstract: Traumatic brain injury (TBI) is defined as an injury to the brain by external forces which can lead to cellular damage and the disruption of normal central nervous system functions. The recently approved blood-based biomarkers GFAP and UCH-L1 can only ... ...

    Abstract Traumatic brain injury (TBI) is defined as an injury to the brain by external forces which can lead to cellular damage and the disruption of normal central nervous system functions. The recently approved blood-based biomarkers GFAP and UCH-L1 can only detect injuries which are detectable on CT, and are not sensitive enough to diagnose milder injuries or concussion. Exosomes are small microvesicles which are released from the cell as a part of extracellular communication in normal as well as diseased states. The objective of this study was to identify the messenger RNA content of the exosomes released by injured neurons to identify new potential blood-based biomarkers for TBI. Human severe traumatic brain injury samples were used for this study. RNA was isolated from neuronal exosomes and total transcriptomic sequencing was performed. RNA sequencing data from neuronal exosomes isolated from serum showed mRNA transcripts of several neuronal genes. In particular, mRNAs of several olfactory receptor genes were present at elevated concentrations in the neuronal exosomes. Some of these genes were OR10A6, OR14A2, OR6F1, OR1B1, and OR1L1. RNA sequencing data from exosomes isolated from CSF showed a similar elevation of these olfactory receptors. We further validated the expression of these samples in serum samples of mild TBI patients, and a similar up-regulation of these olfactory receptors was observed. The data from these experiments suggest that damage to the neurons in the olfactory neuroepithelium as well as in the brain following a TBI may cause the release of mRNA from these receptors in the exosomes. Hence, olfactory receptors can be further explored as biomarkers for the diagnosis of TBI.
    MeSH term(s) Humans ; Receptors, Odorant ; Brain Injuries, Traumatic/metabolism ; Brain Injuries ; Extracellular Vesicles/metabolism ; Brain Concussion ; Olfactory Receptor Neurons/metabolism ; RNA ; Biomarkers ; RNA, Messenger ; Gene Expression Profiling
    Chemical Substances Receptors, Odorant ; RNA (63231-63-0) ; Biomarkers ; RNA, Messenger
    Language English
    Publishing date 2024-02-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms25052777
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Cerebral microdialysis and glucopenia in traumatic brain injury: A review.

    Sharma, Himanshu / McGinnis, John P / Kabotyanski, Katherine E / Gopinath, Shankar P / Goodman, Jerry C / Robertson, Claudia / Cruz Navarro, Jovany

    Frontiers in neurology

    2023  Volume 14, Page(s) 1017290

    Abstract: Traditionally, intracranial pressure (ICP) and partial brain tissue oxygenation ( ... ...

    Abstract Traditionally, intracranial pressure (ICP) and partial brain tissue oxygenation (PbtO
    Language English
    Publishing date 2023-01-27
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2564214-5
    ISSN 1664-2295
    ISSN 1664-2295
    DOI 10.3389/fneur.2023.1017290
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Parallel CSF and serum temporal profile assessment of axonal injury biomarkers NF-L and pNF-H: Associations with patient outcome in moderate-severe traumatic brain injury.

    Wang, Kevin K W / Barton, David J / McQuillan, Leah / Kobeissy, Firas / Cai, Guangzheng / Xu, Haiyan / Yang, Zhihui / Trifilio, Erin / Williamson, John B / Rubenstein, Richard / Robertson, Claudia S / Wagner, Amy K

    Journal of neurotrauma

    2024  

    Abstract: Neurofilament-light chain (NF-L) and phosphorylated neurofilament-heavy chain (pNF-H) are axonal proteins that have been reported as potential diagnostic and prognostic biomarkers in traumatic brain injury (TBI). However, detailed temporal profiles for ... ...

    Abstract Neurofilament-light chain (NF-L) and phosphorylated neurofilament-heavy chain (pNF-H) are axonal proteins that have been reported as potential diagnostic and prognostic biomarkers in traumatic brain injury (TBI). However, detailed temporal profiles for these proteins in blood, and interrelationships in the acute and chronic time periods post-TBI have not been established. Our objectives were 1) to characterize acute-to-chronic serum NF-L and pNF-H profiles after moderate-severe TBI, as well as acute cerebrospinal fluid (CSF) levels, 2) to evaluate CSF and serum NF-L and pNF-H associations with each other, and 3) to assess biomarker associations with global patient outcome using both the Glasgow Outcome Scale-Extended (GOS-E) and Disability Rating Scale (DRS). In this multi-cohort study, we measured serum and CSF NF-L and pNF-H levels in samples collected from two clinical cohorts (University of Pittsburgh [UPITT] and Baylor College of Medicine [BCM]) of individuals with moderate-to-severe TBI. The UPITT cohort includes 279 subjects from an observational cohort study; we obtained serum (n=277 unique subjects) and CSF (n=95 unique subjects) daily for one week, and serum every two weeks for six months. The BCM cohort included 103 subjects from a previous randomized clinical trial of erythropoietin and blood transfusion threshold after severe TBI, which showed no effect on neurological outcome between treatment arms; serum (n=99 unique subjects) and CSF (n=54 unique subjects) NF-L and pNF-H levels were measured at least daily during days (D) 0-10 post-injury. GOS-E and DRS were assessed at 6 months (both cohorts) and 12 months (UPITT cohort only). Results show serum NF-L and pNF-H gradually rise during the first 10 days and peak at D20-30 post-injury. In the UPITT cohort, acute (D0-6) NF-L and pNF-H levels correlate within CSF and serum (Spearman r=0.44-0.48; p<0.05). In the UPITT cohort, acute NF-L CSF and serum levels, as well as chronic (M2-6) serum NF-L levels, were higher among individuals with unfavorable GOS-E and worse DRS at 12 months (p<0.05, all comparisons). In the BCM cohort, higher acute serum NF-L levels were also associated with unfavorable GOS-E. Higher pNF-H serum concentrations (D0-6 and M2-6), but not CSF pNF-H, were associated with unfavorable GOS-E and worse DRS (p<0.05, all comparisons) in the UPITT cohort. Relationships between biomarker levels and favorable outcome persisted after controlling for age, sex, and GCS. This study shows for the first time that serum levels of NF-L and pNF-H peak at D20-30 post-TBI. Serum NF-L levels, and to a lesser extent pNF-H levels, are robustly associated with global patient outcomes and disability after moderate-to-severe TBI. Further studies on clinical utility as prognosis and treatment-response indicators are needed.
    Language English
    Publishing date 2024-04-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 645092-1
    ISSN 1557-9042 ; 0897-7151
    ISSN (online) 1557-9042
    ISSN 0897-7151
    DOI 10.1089/neu.2023.0449
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: The Role of Multimodal Invasive Monitoring in Acute Traumatic Brain Injury.

    Lazaridis, Christos / Robertson, Claudia S

    Neurosurgery clinics of North America

    2016  Volume 27, Issue 4, Page(s) 509–517

    Abstract: This article reviews the role of modalities that directly monitor brain parenchyma in patients with severe traumatic brain injury. The physiology monitored involves compartmental and perfusion pressures, tissue oxygenation and metabolism, quantitative ... ...

    Abstract This article reviews the role of modalities that directly monitor brain parenchyma in patients with severe traumatic brain injury. The physiology monitored involves compartmental and perfusion pressures, tissue oxygenation and metabolism, quantitative blood flow, pressure autoregulation, and electrophysiology. There are several proposed roles for this multimodality monitoring, such as to track, prevent, and treat the cascade of secondary brain injury; monitor the neurologically injured patient; integrate various data into a composite, patient-specific, and dynamic picture; apply protocolized, pathophysiology-driven intensive care; use as a prognostic marker; and understand pathophysiologic mechanisms involved in secondary brain injury to develop preventive and abortive therapies, and to inform future clinical trials.
    MeSH term(s) Brain/physiopathology ; Brain Injuries, Traumatic/physiopathology ; Cerebrovascular Circulation/physiology ; Critical Care ; Humans ; Intracranial Pressure/physiology ; Monitoring, Physiologic/methods
    Language English
    Publishing date 2016-10
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1196855-2
    ISSN 1558-1349 ; 1042-3680
    ISSN (online) 1558-1349
    ISSN 1042-3680
    DOI 10.1016/j.nec.2016.05.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Hypothermia for Increased Intracranial Pressure: Is It Dead?

    Lazaridis, Christos / Robertson, Claudia S

    Current neurology and neuroscience reports

    2016  Volume 16, Issue 9, Page(s) 78

    Abstract: Mild to moderate therapeutic hypothermia (HT) has been used to alleviate intracranial hypertension in traumatic brain injury (TBI). Its main contribution is thought to be via reduction in cerebral metabolic requirement leading both to favorable oxygen/ ... ...

    Abstract Mild to moderate therapeutic hypothermia (HT) has been used to alleviate intracranial hypertension in traumatic brain injury (TBI). Its main contribution is thought to be via reduction in cerebral metabolic requirement leading both to favorable oxygen/metabolic delivery-demand ratios as well as a reduction of cerebral blood volume resulting in decreased ICP. Nevertheless, HT is a clinically complex, labor-intensive procedure with numerous potential adverse effects. Furthermore, randomized controlled trials suggest either no effect or harm. These facts challenge the role of HT in TBI. We address this challenge by posing three questions that relate to the overarching value of controlling ICP, the effectiveness of HT in reducing ICP, and the benefit-risk ratio of the intervention. We conclude that HT should not be used as an "early" intervention unless as a part of a clinical trial, although it may still have a role in patients with refractory intracranial hypertension.
    MeSH term(s) Animals ; Brain Injuries/physiopathology ; Humans ; Hypothermia, Induced ; Intracranial Hypertension/physiopathology ; Intracranial Hypertension/therapy ; Intracranial Pressure ; Neurophysiological Monitoring
    Language English
    Publishing date 2016-09
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2057363-7
    ISSN 1534-6293 ; 1528-4042
    ISSN (online) 1534-6293
    ISSN 1528-4042
    DOI 10.1007/s11910-016-0681-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Secondary brain injury: Predicting and preventing insults.

    Lazaridis, Christos / Rusin, Craig G / Robertson, Claudia S

    Neuropharmacology

    2018  Volume 145, Issue Pt B, Page(s) 145–152

    Abstract: Mortality or severe disability affects the majority of patients after severe traumatic brain injury (TBI). Adherence to the brain trauma foundation guidelines has overall improved outcomes; however, traditional as well as novel interventions towards ... ...

    Abstract Mortality or severe disability affects the majority of patients after severe traumatic brain injury (TBI). Adherence to the brain trauma foundation guidelines has overall improved outcomes; however, traditional as well as novel interventions towards intracranial hypertension and secondary brain injury have come under scrutiny after series of negative randomized controlled trials. In fact, it would not be unfair to say there has been no single major breakthrough in the management of severe TBI in the last two decades. One plausible hypothesis for the aforementioned failures is that by the time treatment is initiated for neuroprotection, or physiologic optimization, irreversible brain injury has already set in. We, and others, have recently developed predictive models based on machine learning from continuous time series of intracranial pressure and partial brain tissue oxygenation. These models provide accurate predictions of physiologic crises events in a timely fashion, offering the opportunity for an earlier application of targeted interventions. In this article, we review the rationale for prediction, discuss available predictive models with examples, and offer suggestions for their future prospective testing in conjunction with preventive clinical algorithms. This article is part of the Special Issue entitled "Novel Treatments for Traumatic Brain Injury".
    MeSH term(s) Brain Injuries/diagnosis ; Brain Injuries/etiology ; Brain Injuries/prevention & control ; Humans ; Prognosis
    Language English
    Publishing date 2018-06-07
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 218272-5
    ISSN 1873-7064 ; 0028-3908
    ISSN (online) 1873-7064
    ISSN 0028-3908
    DOI 10.1016/j.neuropharm.2018.06.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Getting Warmer on Critical Care for Head Injury.

    Robertson, Claudia S / Ropper, Allan H

    The New England journal of medicine

    2015  Volume 373, Issue 25, Page(s) 2469–2470

    MeSH term(s) Brain Injuries/complications ; Humans ; Hypothermia, Induced ; Intracranial Hypertension/therapy
    Language English
    Publishing date 2015-12-17
    Publishing country United States
    Document type Comment ; Editorial
    ZDB-ID 207154-x
    ISSN 1533-4406 ; 0028-4793
    ISSN (online) 1533-4406
    ISSN 0028-4793
    DOI 10.1056/NEJMe1511174
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Prognosis of Six-Month Glasgow Outcome Scale in Severe Traumatic Brain Injury Using Hospital Admission Characteristics, Injury Severity Characteristics, and Physiological Monitoring during the First Day Post-Injury.

    Rubin, M Laura / Yamal, Jose-Miguel / Chan, Wenyaw / Robertson, Claudia S

    Journal of neurotrauma

    2019  Volume 36, Issue 16, Page(s) 2417–2422

    Abstract: Gold standard prognostic models for long-term outcome in patients with severe traumatic brain injury (TBI) use admission characteristics and are considered useful in some areas but not for clinical practice. In this study, we aimed to build prognostic ... ...

    Abstract Gold standard prognostic models for long-term outcome in patients with severe traumatic brain injury (TBI) use admission characteristics and are considered useful in some areas but not for clinical practice. In this study, we aimed to build prognostic models for 6-month Glasgow Outcome Score (GOS) in patients with severe TBI, combining baseline characteristics with physiological, treatment, and injury severity data collected during the first 24 h after injury. We used a training dataset of 472 TBI subjects and several data mining algorithms to predict the long-term neurological outcome. Performance of these algorithms was assessed in an independent (test) sample of 158 subjects. The least absolute shrinkage and selection operator (LASSO) led to the highest prediction accuracy (area under the receiving operating characteristic curve = 0.86) in the test set. The most important post-baseline predictor of GOS was the best motor Glasgow Coma Scale (GCS) recorded in the first day post-injury. The LASSO model containing the best motor GCS and baseline variables as predictors outperformed a model with baseline data only. TBI patient physiology of the first day-post-injury did not have a major contribution to patient prognosis six months after injury. In conclusion, 6-month GOS in patients with TBI can be predicted with good accuracy by the end of the first day post-injury, using hospital admission data and information on the best motor GCS achieved during those first 24 h post-injury. Passed the first day after injury, important physiological predictors could emerge from landmark analyses, leading to prediction models of higher accuracy than the one proposed in the current research.
    MeSH term(s) Brain Injuries, Traumatic/diagnosis ; Brain Injuries, Traumatic/physiopathology ; Glasgow Outcome Scale ; Humans ; Injury Severity Score ; Models, Theoretical ; Monitoring, Physiologic ; Patient Admission ; Prognosis
    Language English
    Publishing date 2019-04-23
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 645092-1
    ISSN 1557-9042 ; 0897-7151
    ISSN (online) 1557-9042
    ISSN 0897-7151
    DOI 10.1089/neu.2018.6217
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top