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Duy PQ, Mehta NH, Kahle KT. Biomechanical instability of the brain-CSF interface in hydrocephalus. Brain 2024; 147:3274-3285. [PMID: 38798141 PMCID: PMC11449143 DOI: 10.1093/brain/awae155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/15/2024] [Accepted: 05/05/2024] [Indexed: 05/29/2024] Open
Abstract
Hydrocephalus, characterized by progressive expansion of the CSF-filled ventricles (ventriculomegaly), is the most common reason for brain surgery. 'Communicating' (i.e. non-obstructive) hydrocephalus is classically attributed to a primary derangement in CSF homeostasis, such as choroid plexus-dependent CSF hypersecretion, impaired cilia-mediated CSF flow currents, or decreased CSF reabsorption via the arachnoid granulations or other pathways. Emerging data suggest that abnormal biomechanical properties of the brain parenchyma are an under-appreciated driver of ventriculomegaly in multiple forms of communicating hydrocephalus across the lifespan. We discuss recent evidence from human and animal studies that suggests impaired neurodevelopment in congenital hydrocephalus, neurodegeneration in elderly normal pressure hydrocephalus and, in all age groups, inflammation-related neural injury in post-infectious and post-haemorrhagic hydrocephalus, can result in loss of stiffness and viscoelasticity of the brain parenchyma. Abnormal brain biomechanics create barrier alterations at the brain-CSF interface that pathologically facilitates secondary enlargement of the ventricles, even at normal or low intracranial pressures. This 'brain-centric' paradigm has implications for the diagnosis, treatment and study of hydrocephalus from womb to tomb.
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Affiliation(s)
- Phan Q Duy
- Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Neel H Mehta
- Department of Neurosurgery, Harvard Medical School and Massachusetts General Hospital, Boston, MA 02115, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Harvard Medical School and Massachusetts General Hospital, Boston, MA 02115, USA
- Department of Neurosurgery, Boston Children’s Hospital, Boston, MA 02115, USA
- Division of Genetics and Genomics, Boston Children’s Hospital, Boston, MA 02114, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
- Developmental Brain and CSF Disorders Program, Massachusetts General Hospital, Boston, MA 02114, USA
- Program in Neuroscience, Harvard University, Cambridge, MA 02142, USA
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Kameda M, Kajimoto Y, Wanibuchi M. New therapeutic hypothesis for infantile extrinsic hydrocephalus. Front Neurol 2023; 14:1215560. [PMID: 37794877 PMCID: PMC10546040 DOI: 10.3389/fneur.2023.1215560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 08/23/2023] [Indexed: 10/06/2023] Open
Affiliation(s)
- Masahiro Kameda
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
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Zhou F, Yang Z, Tang Z, Zhang Y, Wang H, Sun G, Zhang R, Jiang Y, Zhou C, Hou X, Liu L. Outcomes and prognostic factors of infantile acquired hydrocephalus: a single-center experience. BMC Pediatr 2023; 23:260. [PMID: 37226122 DOI: 10.1186/s12887-023-04034-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 04/26/2023] [Indexed: 05/26/2023] Open
Abstract
AIM To assess the etiologies and adverse outcomes of infantile acquired hydrocephalus and predict prognosis. METHODS A total of 129 infants diagnosed with acquired hydrocephalus were recruited from 2008 to 2021. Adverse outcomes included death and significant neurodevelopmental impairment which was defined as Bayley Scales of Infant and Toddler Development III score < 70, cerebral palsy, visual or hearing impairment, and epilepsy. Chi-squared was used to evaluate the prognostic factors of adverse outcomes. A receiver operating characteristic curve was calculated to determine the cutoff value. RESULTS Of 113 patients with outcome data, 55 patients (48.7%) had adverse outcomes. Late surgical intervention time (13 days) and severe ventricular dilation were associated with adverse outcomes. The combination of surgical intervention time and cranial ultrasonography (cUS) indices was a better predictive marker compared with any of them (surgical intervention time, P = 0.05; cUS indices, P = 0.002). Post-hemorrhage (54/113, 48%), post-meningitis (28/113, 25%), and hydrocephalus arising from both hemorrhage and meningitis (17/113, 15%) accounted for a large proportion of the etiologies in our study. Hydrocephalus occurs secondary to post-hemorrhage and had a favorable outcome compared with other etiologies in both preterm and term groups. A significant difference in adverse outcomes between the inherited error of metabolism as a cause and other etiologies (P = 0.02). CONCLUSION Late surgical treatment times and severe ventricular dilation can predict adverse outcomes in infants with acquired hydrocephalus. It is crucial to identify the causes of acquired hydrocephalus to predict the adverse outcomes. Research into measures of improving adverse outcomes following infantile acquired hydrocephalus is urgently necessary.
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Affiliation(s)
- Faliang Zhou
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Zhao Yang
- Office of Academic Research, Peking University First Hospital, Beijing, China
| | - Zezhong Tang
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Yang Zhang
- Department of Neurosurgery, Peking University First Hospital, Beijing, China
| | - Hongmei Wang
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Guoyu Sun
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Rui Zhang
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Yi Jiang
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Congle Zhou
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Xinlin Hou
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China
| | - Lili Liu
- Department of Pediatrics, Peking University First Hospital, No.1 courtyard, Xi'anmen Street, Xicheng District, Beijing, China.
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Caudron Y, Beccaria K, Bourgeois M, Benichi S, Guida L, James S, Paternoster G, Blauwblomme T. Infantile hydrocephalus: a retrospective cohort of 467 patients from a single center. Neurochirurgie 2022; 68:373-378. [DOI: 10.1016/j.neuchi.2021.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/30/2021] [Accepted: 12/29/2021] [Indexed: 10/19/2022]
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Stanuszek A, Bębenek A, Milczarek O, Kwiatkowski S. Return to play in children with shunted hydrocephalus. J Neurosurg Pediatr 2022; 29:1-9. [PMID: 34653983 DOI: 10.3171/2021.7.peds21127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/20/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The objective of this study was to assess the relevance of shunted hydrocephalus in regard to participation by young patients in physical education (PE) classes. Students diagnosed with this condition are very often restricted in PE classes owing to the lack of official and well-defined guidelines. However, the medical literature suggests that there is no relationship between the disease and risk of sport-related injuries. In this study, the authors intended to evaluate not only the accuracy of this statement, but also to explore the factors that delay or foreclose return to exercise. METHODS The analysis was conducted on patients aged < 18 years with a diagnosis of shunt-treated hydrocephalus who received follow-up for a minimum of 1 year. Collected medical data were examined for factors limiting participation in PE at school. Indicators of both sport-related injuries and conditions acceptable for return to exercise were gathered during follow-up visits. RESULTS In this study, 72.72% of patients attended sport activities in schools. The group based on return to PE class differed significantly in the occurrence of neurological deficits, as well as presence of comorbidities. In univariate analysis, the authors identified these parameters as risk factors limiting participation in PE. On the contrary, etiology of hydrocephalus, type of shunting device, number of shunt malfunctions, and presence of epilepsy did not significantly influence sport engagement. CONCLUSIONS This study shows that many patients with shunt-treated hydrocephalus can safely participate in PE. Presence of neurological deficits before and after neurosurgical treatment, as well as presence of comorbidities, are factors that negatively impact the possibility of a patient returning to physical activity. Sport-related injuries do occur, but at a low incidence.
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Affiliation(s)
- Agnieszka Stanuszek
- 1Department of Neurosurgery and Neurotraumatology, Regional Specialised Hospital No. 4, Bytom, Poland
| | - Adam Bębenek
- 2Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland; and
| | - Olga Milczarek
- 3Department of Pediatric Neurosurgery, Jagiellonian University Medical College, Kraków, Poland
| | - Stanisław Kwiatkowski
- 3Department of Pediatric Neurosurgery, Jagiellonian University Medical College, Kraków, Poland
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Sachdeva S, Kolarova MZ, Foreman BE, Kaplan SJ, Jasien JM. A Systematic Review of Cognitive Function in Adults with Spina Bifida. Dev Neurorehabil 2021; 24:569-582. [PMID: 33872130 DOI: 10.1080/17518423.2021.1907813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: Though much research has been done on the cognitive profiles of children, the abilities of patients with SBM as they age into adulthood are not well understood.Objective: Determine if adults with SBM have impairments in overall cognition, attention, executive function, and memory compared to typically developing adults or a standardized population mean.Methods: A medical librarian composed a search of spina bifida, adults, and cognitive function. 549 results were screened using title and abstract. Data were extracted using Covidence review software, including risk of bias assessments. 24 studies were included.Results: Memory impairments, notably working and prospective, have been reported. Results in other domains varied. Average VIQ or PIQ did not imply lack of impairment in other specific domains.Conclusion: Memory impairments should be accounted for and neuropsychological testing should be considered when providing care to adults with SBM. Future longitudinal cognitive aging and interventional studies are needed.
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Affiliation(s)
| | | | | | | | - Joan M Jasien
- Division of Pediatric Neurology, Duke University Health System, Durham, United States
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MR Elastography demonstrates reduced white matter shear stiffness in early-onset hydrocephalus. NEUROIMAGE-CLINICAL 2021; 30:102579. [PMID: 33631603 PMCID: PMC7905205 DOI: 10.1016/j.nicl.2021.102579] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 12/08/2020] [Accepted: 01/21/2021] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Hydrocephalus that develops early in life is often accompanied by developmental delays, headaches and other neurological deficits, which may be associated with changes in brain shear stiffness. However, noninvasive approaches to measuring stiffness are limited. Magnetic Resonance Elastography (MRE) of the brain is a relatively new noninvasive imaging method that provides quantitative measures of brain tissue stiffness. Herein, we aimed to use MRE to assess brain stiffness in hydrocephalus patients compared to healthy controls, and to assess its associations with ventricular size, as well as demographic, shunt-related and clinical outcome measures. METHODS MRE was collected at two imaging sites in 39 hydrocephalus patients and 33 healthy controls, along with demographic, shunt-related, and clinical outcome measures including headache and quality of life indices. Brain stiffness was quantified for whole brain, global white matter (WM), and lobar WM stiffness. Group differences in brain stiffness between patients and controls were compared using two-sample t-tests and multivariable linear regression to adjust for age, sex, and ventricular volume. Among patients, multivariable linear or logistic regression was used to assess which factors (age, sex, ventricular volume, age at first shunt, number of shunt revisions) were associated with brain stiffness and whether brain stiffness predicts clinical outcomes (quality of life, headache and depression). RESULTS Brain stiffness was significantly reduced in patients compared to controls, both unadjusted (p ≤ 0.002) and adjusted (p ≤ 0.03) for covariates. Among hydrocephalic patients, lower stiffness was associated with older age in temporal and parietal WM and whole brain (WB) (beta (SE): -7.6 (2.5), p = 0.004; -9.5 (2.2), p = 0.0002; -3.7 (1.8), p = 0.046), being female in global and frontal WM and WB (beta (SE): -75.6 (25.5), p = 0.01; -66.0 (32.4), p = 0.05; -73.2 (25.3), p = 0.01), larger ventricular volume in global, and occipital WM (beta (SE): -11.5 (3.4), p = 0.002; -18.9 (5.4), p = 0.0014). Lower brain stiffness also predicted worse quality of life and a higher likelihood of depression, controlling for all other factors. CONCLUSIONS Brain stiffness is reduced in hydrocephalus patients compared to healthy controls, and is associated with clinically-relevant functional outcome measures. MRE may emerge as a clinically-relevant biomarker to assess the neuropathological effects of hydrocephalus and shunting, and may be useful in evaluating the effects of therapeutic alternatives, or as a supplement, of shunting.
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Schnitzler ER, Schneck MJ. Therapeutic Pitfalls in the Transition of Neurologic Patients from Pediatric to Adult Health Care Providers. Neurol Clin 2020; 39:243-256. [PMID: 33223087 DOI: 10.1016/j.ncl.2020.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Transitions of care from the pediatric to adult setting are fraught with difficulty. For patients whose neurologic problems began in childhood, there is often a lack of organized multidisciplinary care with the desired neurologic expertise in the adult setting. This monograph highlights those difficulties, reviewing disease-specific instances of the problems with transition from pediatric to adult neurologic care. The use of an arbitrary chronologic age cutoff for transition from pediatric to adult expertise in specific disease state may be a disservice in provision of care, and the disease-specific expertise of providers may outweigh the benefit of an age-related provider focus.
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Affiliation(s)
- Eugene R Schnitzler
- Department of Neurology, Division of Pediatric Neurology, Loyola University Chicago, Stritch School of Medicine, Maguire Building Suite 2700, 2160 South First Avenue, Maywood, IL 60153, USA; Department of Pediatrics, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA.
| | - Michael J Schneck
- Department of Neurology, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA; Department of Neurosurgery, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA
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