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García M, Amayra I, Pérez M, Salgueiro M, Martínez O, López-Paz JF, Allen PA. Cognition in Chiari Malformation Type I: an Update of a Systematic Review. Neuropsychol Rev 2023:10.1007/s11065-023-09622-2. [PMID: 37798373 DOI: 10.1007/s11065-023-09622-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/26/2023] [Indexed: 10/07/2023]
Abstract
Chiari malformation has been classified as a group of posterior cranial fossa disorders characterized by hindbrain herniation. Chiari malformation type I (CM-I) is the most common subtype, ranging from asymptomatic patients to those with severe disorders. Research about clinical manifestations or medical treatments is still growing, but cognitive functioning has been less explored. The aim of this systematic review is to update the literature search about cognitive deficits in CM-I patients. A literature search was performed through the following electronic databases: MEDLINE, PsychINFO, Pubmed, Cochrane Library, Scopus, and Web of Science. The date last searched was February 1, 2023. The inclusion criteria were as follows: (a) include pediatric or adult participants with a CM-I diagnosis, (b) include cognitive or neuropsychological assessment with standardized tests, (c) be published in English or Spanish, and (d) be empirical studies. Articles that did not report empirical data, textbooks and conference abstracts were excluded. After the screening, twenty-eight articles were included in this systematic review. From those, twenty-one articles were focused on adult samples and seven included pediatric patients. There is a great heterogeneity in the recruited samples, followed methodology and administered neurocognitive protocols. Cognitive functioning appears to be affected in CM-I patients, at least some aspects of attention, executive functions, visuospatial abilities, episodic memory, or processing speed. However, these results require careful interpretation due to the methodological limitations of the studies. Although it is difficult to draw a clear profile of cognitive deficits related to CM-I, the literature suggests that cognitive dysfunction may be a symptom of CM-I. This suggest that clinicians should include cognitive assessment in their diagnostic procedures used for CM-I. In summary, further research is needed to determine a well-defined cognitive profile related to CM-I, favoring a multidisciplinary approach of this disorder.
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Affiliation(s)
- Maitane García
- Department of Psychology, Faculty of Health Sciences, Neuro-E-Motion Research Team, University of Deusto, Bilbao, Spain.
| | - Imanol Amayra
- Department of Psychology, Faculty of Health Sciences, Neuro-E-Motion Research Team, University of Deusto, Bilbao, Spain
| | - Manuel Pérez
- Department of Psychology, Faculty of Health Sciences, Neuro-E-Motion Research Team, University of Deusto, Bilbao, Spain
- Faculty of Health Sciences, Isabel I University, Burgos, Spain
| | - Monika Salgueiro
- Department of Clinical and Health Psychology, and Research Methodology, Faculty of Psychology, University of the Basque Country, Donostia, Spain
| | - Oscar Martínez
- Department of Psychology, Faculty of Health Sciences, Neuro-E-Motion Research Team, University of Deusto, Bilbao, Spain
| | - Juan Francisco López-Paz
- Department of Psychology, Faculty of Health Sciences, Neuro-E-Motion Research Team, University of Deusto, Bilbao, Spain
| | - Philip A Allen
- Conquer Chiari Research Center, Department of Psychology, University of Akron, Akron, OH, USA
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Tokar DM, Kaut KP, Allen PA. Revisiting the factor structure of the Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2): Evidence for a bifactor model in individuals with Chiari malformation. PLoS One 2023; 18:e0287208. [PMID: 37797067 PMCID: PMC10553824 DOI: 10.1371/journal.pone.0287208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 06/01/2023] [Indexed: 10/07/2023] Open
Abstract
The Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2; Dworkin et al., 2009) is intended to measure the multidimensional qualities of pain (i.e., continuous, intermittent, neuropathic, and affective) as well as total pain. Using structural equation modeling, we evaluated the fit of four competing measurement models of the SF-MPQ-2-an oblique 4-factor model, a 1-factor model, a higher-order model, and a bifactor model-in 552 adults diagnosed with Chiari malformation, a chronic health condition whose primary symptoms include head and neck pain. Results revealed the strongest support for the bifactor model, suggesting that SF-MPQ-2 item responses are due to both a general pain factor and a specific pain factor that is orthogonal to the general pain factor. Additional bifactor analyses of the SF-MPQ-2's model-based reliability and dimensionality revealed that most of the SF-MPQ-2's reliable variance is explained by a general pain factor, and that the instrument can be modeled unidimensionally and scored as a general pain measure. Results also indicated that the general and affective pain factors in the bifactor model uniquely predicted pain-related external criteria (e.g., depression, anxiety, and stress); however, the continuous, intermittent, and neuropathic factors did not.
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Affiliation(s)
- David M. Tokar
- Department of Social and Behavioral Sciences, Central State University, Wilberforce, OH, United States of America
| | - Kevin P. Kaut
- Department of Psychology, University of Akron, Akron, OH, United States of America
| | - Philip A. Allen
- Department of Psychology, University of Akron, Akron, OH, United States of America
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Wijnia JW, Oudman E, Batjes DM, Brouwer BA, Oey M, Postma A. Korsakoff syndrome and altered pain perception: a search of underlying neural mechanisms. Scand J Pain 2023; 23:424-432. [PMID: 36117250 DOI: 10.1515/sjpain-2022-0053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/25/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Patients with Korsakoff syndrome (KS) may have a diminished pain perception. Information on KS and pain is scarce and limited to case descriptions. The present study is the first to investigate the underlying neural mechanisms of altered pain perception in patients with KS more systematically. METHODS We conducted a literature search on neural correlates of pain perception in other neurocognitive disorders in which extensive research was done. RESULTS The brain areas that are affected in KS showed considerable overlap with the neural correlates of pain perception in other neurocognitive disorders. We discussed which different aspects of disturbed pain perception could play a role within KS, based on distinct neural damage and brain areas involved in pain perception. CONCLUSIONS Combining current knowledge, we hypothesize that diminished pain perception in KS may be related to lesioned neural connections between cerebral cortical networks and relays of mainly the thalamus, the periaqueductal gray, and possibly lower brain stem regions projecting to the cerebellum. Based on these neural correlates of altered pain perception, we assume that increased pain thresholds, inhibition of pain signals, and disturbed input to cerebral and cerebellar cortical areas involved in pain processing, all are candidate mechanisms in cases of diminished pain perception in KS. We recommend that clinicians need to be alert for somatic morbidity in patients with KS. Due to altered neural processing of nociceptive input the clinical symptoms of somatic morbidity may present differently (i.e. limited pain responses) and therefore are at risk of being missed.
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Affiliation(s)
- Jan W Wijnia
- Slingedael Center of Expertise for Korsakoff Syndrome, Rotterdam, The Netherlands
| | - Erik Oudman
- Slingedael Center of Expertise for Korsakoff Syndrome, Rotterdam, The Netherlands
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
| | - Deirdre M Batjes
- Slingedael Center of Expertise for Korsakoff Syndrome, Rotterdam, The Netherlands
| | - Brigitte A Brouwer
- Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Misha Oey
- Slingedael Center of Expertise for Korsakoff Syndrome, Rotterdam, The Netherlands
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
| | - Albert Postma
- Slingedael Center of Expertise for Korsakoff Syndrome, Rotterdam, The Netherlands
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
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Labuda R, Loth D, Loth F, Allen PA. Pain and Depression Account for More Than One Half of the Neck Disability Variance Among Adult Women with Chiari I. World Neurosurg 2023; 171:e478-e485. [PMID: 36526226 DOI: 10.1016/j.wneu.2022.12.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE We sought to quantify the neck-related disability in adult women with Chiari malformation type I and identify the significantly related variables. METHODS A total of 70 variables were selected from the self-report history questionnaires (12 variables; n = 474), standardized scales (15 variables; n = 474), and morphometric data (43 variables; n = 293-474) of adult women with Chiari malformation type I. The variables were tested independently to identify those with a significant relationship to the Neck Disability Index (NDI; P < 0.00071) and those that might be associated with the NDI (P < 0.05). A forward selection regression model was constructed to identify the variables contributing unique variance to the NDI. In addition, a mediation analysis was performed to determine whether depression mediated the relationship between pain and disability. RESULTS Overall, 79.5% of the patients had scored at a moderate level of disability or higher. Independent testing identified 16 significant variables, including symptom duration, tonsillar position, and measures of psychological distress. The short-form McGill pain questionnaire-2 (r = 0.69; P < 0.00001) and CES-D scale for depression (r = 0.56; P < 0.00001) exhibited the highest correlations with the NDI. The forward selection regression model produced an R2 of 0.6178. Pain and depression accounted for more than one half of the NDI variance. CONCLUSIONS We found that high levels of disability are common among adult women with Chiari malformation type I, independent of surgical status. Pain and depression were the primary factors related to this disability. Depression mediated the relationship between pain intensity and disability at a modest level (5%). Patients who had experienced symptoms for >2 years before diagnosis had had, on average, 77% higher NDI scores, highlighting the importance of a timely diagnosis.
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Affiliation(s)
| | - Dorothy Loth
- Conquer Chiari Research Center, Department of Psychology, The University of Akron, Akron, Ohio, USA
| | - Francis Loth
- Department of Mechanical and Industrial Engineering, Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Philip A Allen
- Conquer Chiari Research Center, Department of Psychology, The University of Akron, Akron, Ohio, USA
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Labuda R, Nwotchouang BST, Ibrahimy A, Allen PA, Oshinski JN, Klinge P, Loth F. A new hypothesis for the pathophysiology of symptomatic adult Chiari malformation Type I. Med Hypotheses 2022; 158. [PMID: 34992329 PMCID: PMC8730378 DOI: 10.1016/j.mehy.2021.110740] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chiari malformation Type I (CMI) is characterized by herniation of the cerebellar tonsils through the foramen magnum. The pathophysiology of CMI is not well elucidated; however, the prevailing theory focuses on the underdevelopment of the posterior cranial fossa which results in tonsillar herniation. Symptoms are believed to be due to the herniation causing resistance to the natural flow of cerebrospinal fluid (CSF) and exerting a mass effect on nearby neural tissue. However, asymptomatic cases vastly outnumber symptomatic ones and it is not known why some people become symptomatic. Recently, it has been proposed that CMI symptoms are primarily due to instability of either the atlanto-axial (AA) or the atlanto-occipital (AO) joint and the cerebellar tonsils herniate to prevent mechanical pinching. However, only a small percentage of patients exhibit clinical instability and these theories do not account for asymptomatic herniations. We propose that the pathophysiology of adult CMI involves a combination of craniocervical abnormalities which leads to tonsillar herniation and reduced compliance of the cervical spinal canal. Specifically, abnormal AO and/or AA joint morphology leads to chronic cervical instability, often subclinical, in a large portion of CMI patients. This in turn causes overwork of the suboccipital muscles as they try to compensate for the instability. Over time, the repeated, involuntary activation of these muscles leads to mechanical overload of the myodural bridge complex, altering the mechanical properties of the dura it merges with. As a result, the dura becomes stiffer, reducing the overall compliance of the cervical region. This lower compliance, combined with CSF resistance at the same level, leads to intracranial pressure peaks during the cardiac cycle (pulse pressure) that are amplified during activities such as coughing, sneezing, and physical exertion. This increase in pulse pressure reduces the compliance of the cervical subarachnoid space which increases the CSF wave speed in the spinal canal, and further increases pulse pressure in a feedback loop. Finally, the abnormal pressure environment induces greater neural tissue motion and strain, causing microstructural damage to the cerebellum, brainstem, and cervical spinal cord, and leading to symptoms. This hypothesis explains how the combination of craniocervical bony abnormalities, anatomic CSF restriction, and reduced compliance leads to symptoms in adult CMI.
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Affiliation(s)
- Rick Labuda
- Conquer Chiari, 320 Osprey Ct., Wexford, PA 15090, United States
| | - Blaise Simplice Talla Nwotchouang
- Conquer Chiari Research Center, Department of Mechanical Engineering, The University of Akron, 264 Wolf Ledges Pkwy Rm 211b, Akron, OH 44325, United States
| | - Alaaddin Ibrahimy
- Department of Biomedical Engineering, Yale University, 17 Hillhouse Avenue, New Haven, CT 06520, United States
| | - Philip A Allen
- Conquer Chiari Research Center, Department of Psychology, The University of Akron, 302 Buchtel Hall, Akron, OH 44325, United States
| | - John N Oshinski
- Department of Radiology & Imaging Sciences, Emory University School of Medcinece, Atlanta, GA 30322, United States
| | - Petra Klinge
- The Warren Alpert Medical School of Brown University, United States
| | - Francis Loth
- Department of Mechanical & Industrial Engineering, Department of Bioengineering, Northeastern University, 334 Snell Engineering, 360 Huntington Ave, Boston, MA 02115, United States
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Influence of Pain on Cognitive Dysfunction and Emotion Dysregulation in Chiari Malformation Type I. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1378:155-178. [DOI: 10.1007/978-3-030-99550-8_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bogdanov E. Dislocations of the cerebellar tonsils in the large occipital foramen and the spectrum of Chiari malformations Type 1. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:7-15. [DOI: 10.17116/jnevro20221220417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Imaging and health metrics in incidental cerebellar tonsillar ectopia: findings from the Adolescent Brain Cognitive Development Study (ABCD). Neuroradiology 2021; 63:1913-1924. [PMID: 34247260 DOI: 10.1007/s00234-021-02759-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/27/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Incidental cerebellar tonsillar ectopia (ICTE) that meets the radiographic criterion for Chiari malformation type I (CMI) is an increasingly common finding in the clinical setting, but its significance is unclear. The present study examined posterior cranial fossa (PCF) morphometrics and a broad range of health instruments of pediatric ICTE cases and matched controls extracted from the Adolescent Brain Cognitive Development (ABCD) dataset. METHODS One-hundred-six subjects with ICTE and 106 matched controls without ICTE were identified from 11,411 anatomical MRI of healthy screened pediatric subjects from the ABCD project. Subjects were matched by sex, age, body mass index, race, and ethnicity. Twenty-two brain morphometrics and 22 health instruments were compared between the two groups to identify unrecognized CMI symptoms and assess the general health impact of ICTE. RESULTS Twelve and 15 measures were significantly different between the ICTE and control groups for females and males, respectively. Notably, for females, the anterior CSF space was significantly smaller (p = 0.00005) for the ICTE group than controls. For males, the clivus bone length was significantly shorter (p = 0.0002) for the ICTE group compared to controls. No significant differences were found among the 22 health instruments between the two groups. CONCLUSION This study demonstrated that pediatric ICTE subjects have similar PCF morphometrics to adult CMI. ICTE alone did not appear to cause any unrecognized CMI symptoms and had no impact on the subjects' current mental, physical, or behavioral health. Still, given their cranial and brain morphology, these cases may be at risk for adult-onset symptomatic CMI.
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Houston ML, Houston JR, Sakaie K, Klinge PM, Vorster S, Luciano M, Loth F, Allen PA. Functional connectivity abnormalities in Type I Chiari: associations with cognition and pain. Brain Commun 2021; 3:fcab137. [PMID: 34278303 PMCID: PMC8279071 DOI: 10.1093/braincomms/fcab137] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 04/13/2021] [Accepted: 06/11/2021] [Indexed: 12/30/2022] Open
Abstract
There is initial evidence of microstructural abnormalities in the fibre-tract pathways of the cerebellum and cerebrum of individuals diagnosed with Type I Chiari malformation. However, it is unclear whether abnormal white matter architecture and macro-level morphological deviations that have been observed in Chiari translate to differences in functional connectivity. Furthermore, common symptoms of Chiari include pain and cognitive deficits, but the relationship between these symptoms and functional connectivity has not been explored in this population. Eighteen Type I Chiari patients and 18 age-, sex- and education-matched controls underwent resting-state functional MRI to measure functional connectivity. Participants also completed a neuropsychological battery and completed self-report measures of chronic pain. Group differences in functional connectivity were identified. Subsequently, pathways of significant difference were re-analyzed after controlling for the effects of attention performance and self-reported chronic pain. Chiari patients exhibited functional hypoconnectivity between areas of the cerebellum and cerebrum. Controlling for attention eliminated all deficits with the exception of that from the posterior cerebellar pathway. Similarly, controlling for pain also eliminated deficits except for those from the posterior cerebellar pathway and vermis VII. Patterns of Chiari hyperconnectivity were also found between regions of the cerebellum and cerebrum in Chiari patients. Hyperconnectivity in all regions was eliminated after controlling for attention except between left lobule VIII and the left postcentral gyrus and between vermis IX and the precuneus. Similarly, hyperconnectivity was eliminated after controlling for pain except between the default mode network and globus pallidus, left lobule VIII and the left postcentral gyrus, and Vermis IX and the precuneus. Evidence of both hyper- and hypoconnectivity were identified in Chiari, which is posited to support the hypothesis that the effect of increased pain in Chiari draws on neural resources, requiring an upregulation in inhibitory control mechanisms and resulting in cognitive dysfunction. Areas of hypoconnectivity in Chiari patients also suggest disruption in functional pathways, and potential mechanisms are discussed.
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Affiliation(s)
- Michelle L Houston
- Department of Psychology, The University of Akron, Akron, OH 44325, USA
- Department of Psychology, Middle Tennessee State University, Murfreesboro, TN 37132, USA
| | - James R Houston
- Department of Psychology, Middle Tennessee State University, Murfreesboro, TN 37132, USA
| | - Ken Sakaie
- Department of Diagnostic Radiology, The Cleveland Clinic, Cleveland, OH 44195, USA
| | - Petra M Klinge
- Department of Neurosurgery, Rhode Island Hospital, and Warren Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Sarel Vorster
- Department of Neurological Surgery, The Cleveland Clinic, Cleveland, OH 44195, USA
| | - Mark Luciano
- Department of Neurosurgery, Johns Hopkins Medical Center, Baltimore, MD 21224, USA
| | - Francis Loth
- Department of Biomedical Engineering, The University of Akron, Akron, OH 44325, USA
- Department of Mechanical Engineering, The University of Akron, Akron, OH 44325, USA
| | - Philip A Allen
- Department of Psychology, The University of Akron, Akron, OH 44325, USA
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Antkowiak L, Rogalska M, Stogowski P, Anuszkiewicz K, Mandera M. Clinical Application of Diffusion Tensor Imaging in Chiari Malformation Type I- Advances and Perspectives. A Systematic Review. World Neurosurg 2021; 152:124-136. [PMID: 34147690 DOI: 10.1016/j.wneu.2021.06.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Diffusion tensor imaging (DTI) application in Chiari malformation type I (CMI) is still poorly defined. This study aimed to systematically review the literature and propose perspectives toward the clinical application of DTI in CMI. METHODS PubMed and Embase were searched for English-language articles published until October 20, 2020. Clinical studies and case series, evaluating fractional anisotropy (FA), mean diffusivity (MD), axial diffusivity (AD), or radial diffusivity values in patients with CMI, were included. RESULTS Eight articles were included. Lower FA values were found at the syrinx level, which decreased with syrinx extent and intensity of symptoms, reflecting myelopathy severity. Decreased AD and MD in the middle cerebellar peduncles in symptomatic patients with CMI might explain the presence of cerebellar signs. Increased FA in various supratentorial structures positively correlated with pain severity. Worse performance in neuropsychological tests correlated with decreased FA, increased MD, and radial diffusivity, reflecting axonal degeneration. Postoperative FA decrease in the brainstem compression area reflects successful decompression. A positive correlation was found between the extent of tonsillar ectopia and increased FA, MD, and AD values, which could act as an early indicator of acute brainstem compression. CONCLUSIONS DTI might provide a valuable insight into the neurobiological foundation of symptomatic CMI presentation. The severity of white matter injury evident on DTI could serve as a reliable predictor of postoperative outcomes, therefore facilitating selection of appropriate surgical candidates. Postinterventional DTI reassessment might enable differentiation between unsuccessful surgical technique and irreversible myelopathy. The extent of tonsillar ectopia reflects the severity of microstructural brainstem injury.
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Affiliation(s)
- Lukasz Antkowiak
- Department of Pediatric Neurosurgery, Medical University of Silesia, Katowice, Poland.
| | - Marta Rogalska
- Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Piotr Stogowski
- Faculty of Medicine, Medical University of Gdansk, Gdansk, Poland
| | | | - Marek Mandera
- Department of Pediatric Neurosurgery, Medical University of Silesia, Katowice, Poland
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García M, Eppelheimer MS, Houston JR, Houston ML, Nwotchouang BST, Kaut KP, Labuda R, Bapuraj JR, Maleki J, Klinge PM, Vorster S, Luciano MG, Loth F, Allen PA. Adult Age Differences in Self-Reported Pain and Anterior CSF Space in Chiari Malformation. THE CEREBELLUM 2021; 21:194-207. [PMID: 34106419 DOI: 10.1007/s12311-021-01289-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/27/2021] [Indexed: 11/30/2022]
Abstract
Chiari malformation type I (CMI) is a neural disorder with sensory, cognitive, and motor defects, as well as headaches. Radiologically, the cerebellar tonsils extend below the foramen magnum. To date, the relationships among adult age, brain morphometry, surgical status, and symptom severity in CMI are unknown. The objective of this study was to better understand the relationships among these variables using causal modeling techniques. Adult CMI patients (80% female) who either had (n = 150) or had not (n = 151) undergone posterior fossa decompression surgery were assessed using morphometric measures derived from magnetic resonance images (MRI). MRI-based morphometry showed that the area of the CSF pocket anterior to the cervico-medullary junction (anterior CSF space) correlated with age at the time of MRI (r = - .21). Also, self-reported pain increased with age (r = .11) and decreased with anterior CSF space (r = - .18). Age differences in self-reported pain were mediated by anterior CSF space in the cervical spine area-and this effect was particularly salient for non-decompressed CMI patients. As CMI patients age, the anterior CSF space decreases, and this is associated with increased pain-especially for non-decompressed CMI patients. It is recommended that further consideration of age-related decreases in anterior CSF space in CMI patients be given in future research.
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Affiliation(s)
- Maitane García
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - Maggie S Eppelheimer
- Department of Biomedical Engineering, College of Engineering, The University of Akron, Akron, OH, USA
| | - James R Houston
- Department of Psychology, Middle Tennessee State University, Murfreesboro, TN, USA
| | - Michelle L Houston
- Department of Psychology, The University of Akron, Akron, OH, 44325-4301, USA
| | | | - Kevin P Kaut
- Department of Psychology, The University of Akron, Akron, OH, 44325-4301, USA
| | | | - J Rajiv Bapuraj
- Department of Radiology, Division of Neuroradiology, University of Michigan Health System, Ann Arbor, MI, USA
| | - Jahangir Maleki
- Department of Neurology, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Petra M Klinge
- Department of Neurosurgery, Rhode Island Hospital, Warren Alpert Medical School Brown University, Providence, RI, USA
| | - Sarel Vorster
- Department of Neurological Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Mark G Luciano
- Department of Neurosurgery, Johns Hopkins Medical Center, Baltimore, MD, USA
| | - Francis Loth
- Department of Biomedical Engineering, College of Engineering, The University of Akron, Akron, OH, USA.,Department of Mechanical Engineering, College of Engineering, The University of Akron, Akron, OH, USA
| | - Philip A Allen
- Department of Psychology, The University of Akron, Akron, OH, 44325-4301, USA.
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Impact of Surgical Status, Loneliness, and Disability on Interleukin 6, C-Reactive Protein, Cortisol, and Estrogen in Females with Symptomatic Type I Chiari Malformation. THE CEREBELLUM 2021; 20:872-886. [PMID: 33677786 DOI: 10.1007/s12311-021-01251-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/24/2021] [Indexed: 10/22/2022]
Abstract
Chiari malformation type I (CMI) provides an opportunity for examining possible moderators of allostatic load. CMI patients who had (n = 43) and had not (n = 19) undergone decompression surgery completed questionnaires regarding pain, disability, and loneliness, and provided serum samples for IL-6, CRP, estrogen, and free estradiol assays, and saliva samples to assess diurnal cortisol curves. ANOVAs examining surgical status (decompressed versus non-decompressed), loneliness (high vs. low), and disability (high vs. low) as independent variables and biomarker variables as dependent factors found that loneliness was associated with higher levels of cortisol, F(1, 37) = 4.91, p = .04, η2P = .11, and lower levels of estrogen, F(1, 36) = 7.29, p = .01, η2P = .17, but only in decompressed patients. Results highlight the possible impact of loneliness on biological stress responses and the need to intervene to reduce loneliness in patients with symptomatic CMI.
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