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Total:
30
results
Paramagnetic rim lesion formation is predicted by the initial gadolinium-enhancing lesion diameter
Friday, January 17, 2025
Author(s):
Mustafa Al Gburi,Maria Mazzola,Martina Absinta,María I Gaitán,Daniel S Reich,Sathish K Dundamadappa,Christopher C Hemond
Source:
Multiple sclerosis (Houndmills, Basingstoke, England)
CONCLUSIONS: The long-axis diameter of a CEL is the best translational predictor of subsequent PRL formation at follow-up. This measure holds promise as a method to identify patients at high risk of chronic active lesion formation during the acute inflammatory window.
Paramagnetic Rim Lesions are Highly Specific for Multiple Sclerosis in Real-World Data
Monday, October 07, 2024
Author(s):
Christopher C Hemond,Sathish K Dundamadappa,Mugdha Deshpande,Jonggyu Baek,Robert H Brown,Carolina Ionete,Daniel S Reich
Source:
medRxiv : the preprint server for health sciences
CONCLUSIONS: PRL convey high specificity for MS and can aid in the diagnostic evaluation. Modest sensitivity limits their use as single diagnostic indicators. Including lesions with lower confidence ("possible" PRL) rapidly erodes specificity and should be interpreted with caution given the potential harms associated with misdiagnosis.
Targeted proteomics of cerebrospinal fluid in treatment naïve multiple sclerosis patients identifies immune biomarkers of clinical phenotypes
Wednesday, September 18, 2024
Author(s):
Alexandra Rabin,Elisa Bello,Saurabh Kumar,Dalia Abou Zeki,Khashayar Afshari,Mugdha Deshpande,Nimmy Francis,Farnaz Khalighinejad,Raffaella Umeton,Irina Radu,Fatima Qutab,Danny Kwong,Mariana Kurban,Christopher Hemond,Jillian M Richmond,Carolina Ionete
Source:
Scientific reports
Multiple sclerosis (MS) is an inflammatory demyelinating disease with heterogeneous clinical presentations and variable long-term disability accumulation. There are currently no standard criteria to accurately predict disease outcomes. In this study we investigated the cross-sectional relationship between disease phenotype and immune-modulating cytokines and chemokines in cerebrospinal fluid (CSF). We analyzed CSF from 20 DMT-naïve MS patients using Olink Proteomics' Target 96 Inflammation panel...
New Imaging Markers in Multiple Sclerosis and Related Disorders: Smoldering Inflammation and the Central Vein Sign
Friday, June 28, 2024
Author(s):
Christopher C Hemond,María I Gaitán,Martina Absinta,Daniel S Reich
Source:
Neuroimaging clinics of North America
Concepts of multiple sclerosis (MS) biology continue to evolve, with observations such as "progression independent of disease activity" challenging traditional phenotypic categorization. Iron-sensitive, susceptibility-based imaging techniques are emerging as highly translatable MR imaging sequences that allow for visualization of at least 2 clinically useful biomarkers: the central vein sign and the paramagnetic rim lesion (PRL). Both biomarkers demonstrate high specificity in the discrimination...
A single-arm, open-label pilot study of neuroimaging, behavioral, and peripheral inflammatory correlates of mindfulness-based stress reduction in multiple sclerosis
Tuesday, June 18, 2024
Author(s):
Christopher C Hemond,Mugdha Deshpande,Idanis Berrios-Morales,Shaokuan Zheng,Jerrold S Meyer,George M Slavich,Steven W Cole
Source:
Scientific reports
Multiple sclerosis (MS) is a chronic neurological disease frequently associated with significant fatigue, anxiety, depression, and stress. These symptoms are difficult to treat, and prominently contribute to the decreases in quality of life observed with MS. The underlying mechanisms of these "silent" symptoms are not well understood and include not just the psychological responses to a chronic disease, but also biological contributions from bidirectional psycho-neuro-immune (dys)regulation of...
Multiple sclerosis can be diagnosed solely with dissemination in space: No
Monday, April 15, 2024
Author(s):
Christopher C Hemond,Andrew J Solomon
Source:
Multiple sclerosis (Houndmills, Basingstoke, England)
No abstract
Evaluating the Clinical Utility of Epstein-Barr Virus Antibodies as Biomarkers in Multiple Sclerosis: A Systematic Review
Saturday, February 24, 2024
Author(s):
Abigail Bose,Farnaz Khalighinejad,David C Hoaglin,Christopher C Hemond
Source:
Multiple sclerosis and related disorders
CONCLUSION: Heterogeneous methodology limited generalization and meta-analysis. EBV antibody levels are unlikely to represent prognostic biomarkers in MS. The areas of highest ongoing promise relate to diagnostic exclusion and pharmacodynamic/disease response. Use of EBV antibodies as biomarkers in clinical practice remains additionally limited by lack of methodological precision, reliability, and validation.
Imaging chronic active lesions in multiple sclerosis: a consensus statement
Tuesday, January 16, 2024
Author(s):
Francesca Bagnato,Pascal Sati,Christopher C Hemond,Colm Elliott,Susan A Gauthier,Daniel M Harrison,Caterina Mainero,Jiwon Oh,David Pitt,Russell T Shinohara,Seth A Smith,Bruce Trapp,Christina J Azevedo,Peter A Calabresi,Roland G Henry,Cornelia Laule,Daniel Ontaneda,William D Rooney,Nancy L Sicotte,Daniel S Reich,Martina Absinta
Source:
Brain : a journal of neurology
Chronic active lesions (CAL) are an important manifestation of chronic inflammation in multiple sclerosis and have implications for non-relapsing biological progression. In recent years, the discovery of innovative MRI and PET-derived biomarkers has made it possible to detect CAL, and to some extent quantify them, in the brain of persons with multiple sclerosis, in vivo. Paramagnetic rim lesions on susceptibility-sensitive MRI sequences, MRI-defined slowly expanding lesions on T1-weighted and...
Paramagnetic rim lesions are associated with pathogenic CSF profiles and worse clinical status in multiple sclerosis: A retrospective cross-sectional study
Friday, June 24, 2022
Author(s):
Christopher C Hemond,Jonggyu Baek,Carolina Ionete,Daniel S Reich
Source:
Multiple sclerosis (Houndmills, Basingstoke, England)
CONCLUSION: PRLs, an emerging noninvasive biomarker of chronic neuroinflammation, are confirmed to be associated with greater disease severity and newly shown to be preliminarily associated with blood-brain barrier disruption.
Natural History of New-onset Inflammatory Bowel Disease Among Patients With Multiple Sclerosis
Tuesday, March 29, 2022
Author(s):
Shiv Gandhi,Sara Zelman,Ricardo Eduardo De Armas,Christopher Hemond,Alexander N Levy,Siddharth Singh,Joshua Korzenik,Sushrut Jangi
Source:
Inflammatory bowel diseases
No abstract
The impact of socioeconomic status on mental health and health-seeking behavior across race and ethnicity in a large multiple sclerosis cohort
Saturday, December 25, 2021
Author(s):
Daniela A Pimentel Maldonado,Justin R Eusebio,Lilyana Amezcua,Eleni S Vasileiou,Ellen M Mowry,Christopher C Hemond,Raffaella Umeton Pizzolato,Idanis Berrios Morales,Irina Radu,Carolina Ionete,Kathryn C Fitzgerald
Source:
Multiple sclerosis and related disorders
CONCLUSION: Higher SES was associated with a lower burden of psychiatric symptoms and with a higher likelihood of self-reported symptom recovery after receiving mental health treatment. Attitudes regarding mental health care delivery in MS varied according to racial and ethnic background. Future longitudinal studies in more diverse populations should assess whether co-location of mental health services with MS care helps to reduce the gap between access and need of mental health care in MS.
Paramagnetic Rim Lesions in Multiple Sclerosis: Comparison of Visualization at 1.5-T and 3-T MRI
Wednesday, December 01, 2021
Author(s):
Christopher C Hemond,Daniel S Reich,Sathish K Dundamadappa
Source:
AJR. American journal of roentgenology
BACKGROUND. Multiple sclerosis (MS) is characterized by both acute and chronic intrathecal inflammation. A subset of MS lesions show paramagnetic rims on susceptibility-weighted MRI sequences, reflecting iron accumulation in microglia. These para-magnetic rim lesions have been proposed as a marker of compartmentalized smoldering disease. Paramagnetic rim lesions have been shown at 7 T and, more recently, at 3 T. As susceptibility effects are weaker at lower field strength, it remains unclear if...
Serum Albumin Modifies the Effect of Peripheral Blood Monocytes on Severity of Diabetic Nephropathy in an Adult Population
Monday, August 02, 2021
Author(s):
Cagney Cristancho,Christopher C Hemond
Source:
Canadian journal of diabetes
CONCLUSIONS: Circulating monocytes and serum albumin are significantly associated with albuminuria, but not eGFR in DKD. These results support the potential role of the innate immune system in diabetic microvascular end-organ damage and urinary protein loss, and may be readily translatable clinical markers to incorporate into risk-assessment models for prognostication in diabetes.
Exacerbation of Multiple Sclerosis by BRAF/MEK Treatment for Malignant Melanoma: The Central Vein Sign to Distinguish Demyelinating Lesions From Metastases
Monday, July 26, 2021
Author(s):
Christopher C Hemond,Rohit Bakshi,Shahamat Tauhid,Rosila Sarrosa,Madison Ryan,Vineetha Kamath,James Thomas,Keith R Edwards
Source:
Journal of investigative medicine high impact case reports
The emergence of immunomodulators as effective cancer treatments has been an important advance in cancer therapy. The combination therapy of BRAF/MEK inhibition with or without anti-CTLA-4 treatment causes an immunostimulatory effect that has greatly reduced death from melanoma. In this article, we present the case of a patient with prior multiple sclerosis (MS) and who later developed metastatic malignant melanoma, had a marked increase of magnetic resonance imaging (MRI) findings after...
A real-world cohort analysis of alemtuzumab outcomes in relapsing multiple sclerosis
Saturday, November 14, 2020
Author(s):
Jorge Acevedo Herman,Farnaz Khalighinejad,Katherine York,Irina Radu,Idanis Berrios Morales,Carolina Ionete,Christopher C Hemond
Source:
Multiple sclerosis and related disorders
Multiple sclerosis (MS) is a chronic and progressive neurological disease characterized by recurrent episodes of inflammatory demyelination of the brain and spinal cord. Alemtuzumab has been previously shown in large phase III trials to be an effective therapy in reducing MS clinical flares as well as new radiological activity and atrophy rates. The purpose of this study was to examine real-world effectiveness and safety data from a large cohort of people treated with alemtuzumab at an academic...
Cervical spondylosis is a risk factor for localized spinal cord lesions in multiple sclerosis
Thursday, October 22, 2020
Author(s):
Roberto Bomprezzi,Andrew P Chen,Christopher C Hemond
Source:
Clinical neurology and neurosurgery
CONCLUSIONS: The data from our cohort of MS patients suggest an indirect contribution of cervical spondylosis to disability by increasing the risk of developing localized cord lesions. While further studies are needed to confirm the findings and clarify disease mechanisms, closer attention should be paid to worsening spondylosis in patients with MS.
A paradox of social distancing for SARS-CoV-2: loneliness and heightened immunological risk
Wednesday, August 12, 2020
Author(s):
Liron Rozenkrantz,Michael H Bernstein,Christopher C Hemond
Source:
Molecular psychiatry
No abstract
Placebos in chronic pain: evidence, theory, ethics, and use in clinical practice
Wednesday, July 22, 2020
Author(s):
Ted J Kaptchuk,Christopher C Hemond,Franklin G Miller
Source:
BMJ (Clinical research ed.)
Despite their ubiquitous presence, placebos and placebo effects retain an ambiguous and unsettling presence in biomedicine. Specifically focused on chronic pain, this review examines the effect of placebo treatment under three distinct frameworks: double blind, deception, and open label honestly prescribed. These specific conditions do not necessarily differentially modify placebo outcomes. Psychological, clinical, and neurological theories of placebo effects are scrutinized. In chronic pain,...
HHV-6-Associated Neurological Disease in Children: Epidemiologic, Clinical, Diagnostic, and Treatment Considerations
Wednesday, January 15, 2020
Author(s):
Eva Eliassen,Christopher C Hemond,Jonathan D Santoro
Source:
Pediatric neurology
Human herpesviruses 6A and 6B, often referred to collectively as human herpesvirus 6, are a pair of beta-herpesviruses known to cause a variety of clinical syndromes in both immunocompetent and immunocompromised individuals. Most humans are infected with human herpesvirus 6B, and many with human herpesvirus 6A. Primary infection typically occurs in early childhood, although large-scale reviews on the topic are limited. Herein, the authors explore the clinical manifestations of human herpesvirus...
MRI phenotypes in MS: Longitudinal changes and miRNA signatures
Tuesday, February 26, 2019
Author(s):
Christopher C Hemond,Brian C Healy,Shahamat Tauhid,Maria A Mazzola,Francisco J Quintana,Roopali Gandhi,Howard L Weiner,Rohit Bakshi
Source:
Neurology(R) neuroimmunology & neuroinflammation
CONCLUSIONS: MRI-defined MS phenotypes show high conversion rates characterized by the continuation of either predominant neurodegeneration or inflammation and support the partial independence of these 2 measures. MicroRNA signatures of these phenotypes suggest a role for blood-brain barrier integrity.
The neutrophil-to-lymphocyte and monocyte-to-lymphocyte ratios are independently associated with neurological disability and brain atrophy in multiple sclerosis
Thursday, February 14, 2019
Author(s):
Christopher C Hemond,Bonnie I Glanz,Rohit Bakshi,Tanuja Chitnis,Brian C Healy
Source:
BMC neurology
CONCLUSIONS: Elevated NLR and MLR may represent hematopoetic bias toward increased production and pro-inflammatory priming of the myeloid innate immune system (numerator) in conjunction with dysregulated adaptive immune processes (denominator), and consequently reflect a complementary and independent marker for severity of MS-related neurological disability and MRI outcomes.
Human herpesvirus 6 associated post-transplant acute limbic encephalitis: Clinical observations of biomarkers for risk of seizure in a pediatric population
Thursday, September 27, 2018
Author(s):
Jonathan D Santoro,Christopher C Hemond
Source:
Transplant infectious disease : an official journal of the Transplantation Society
CONCLUSION: In patients with post-hematopoietic stem cell transplant HHV6 associated PALE, lower CSF viral load may be associated with a higher likelihood to have seizures. This may indicate a primary infection as opposed to secondary reactivation phenomenon.
Whole-brain atrophy assessed by proportional- versus registration-based pipelines from 3T MRI in multiple sclerosis
Thursday, July 19, 2018
Author(s):
Christopher C Hemond,Renxin Chu,Subhash Tummala,Shahamat Tauhid,Brian C Healy,Rohit Bakshi
Source:
Brain and behavior
CONCLUSION: Whole-brain atrophy metrics may not be interchangeable between proportional- and registration-based automated pipelines from 3T MRI in patients with MS.
Short Report: A Pilot Study of a Group Positive Psychology Intervention for Patients with Multiple Sclerosis
Thursday, June 14, 2018
Author(s):
Kaitlynne Leclaire,Audrey Cecil,Allison LaRussa,Fiona Stuart,Christopher C Hemond,Brian C Healy,Tanuja Chitnis,Howard Weiner,Jeff Huffman,Bonnie I Glanz
Source:
International journal of MS care
CONCLUSIONS: The 5-week group positive psychology intervention was feasible and acceptable to patients with MS. A randomized controlled trial is necessary to further explore the effectiveness of the group intervention.
Magnetic Resonance Imaging in Multiple Sclerosis
Wednesday, January 24, 2018
Author(s):
Christopher C Hemond,Rohit Bakshi
Source:
Cold Spring Harbor perspectives in medicine
Since its technical development in the early 1980s, magnetic resonance imaging (MRI) has quickly been adopted as an essential tool in supporting the diagnosis, longitudinal monitoring, evaluation of therapeutic response, and scientific investigations in multiple sclerosis (MS). The clinical usage of MRI has increased in parallel with technical innovations in the technique itself; the widespread adoption of clinically routine MRI at 1.5T has allowed sensitive qualitative and quantitative...
Dynamic regulation of serum aryl hydrocarbon receptor agonists in MS
Saturday, June 24, 2017
Author(s):
Veit Rothhammer,Davis M Borucki,Maria Isabel Garcia Sanchez,Maria Antonietta Mazzola,Christopher C Hemond,Keren Regev,Anu Paul,Pia Kivisäkk,Rohit Bakshi,Guillermo Izquierdo,Howard L Weiner,Francisco J Quintana
Source:
Neurology(R) neuroimmunology & neuroinflammation
CONCLUSIONS: Collectively, these data suggest that AHR agonists in serum are dynamically modulated during the course of MS. These findings may guide the development of biomarkers to monitor disease activity as well as the design of novel therapeutic interventions for MS.
Transcranial magnetic stimulation in neurology: what we have learned from randomized controlled studies
Wednesday, December 14, 2011
Author(s):
Christopher C Hemond,Felipe Fregni
Source:
Neuromodulation : journal of the International Neuromodulation Society
Background. Initially developed to excite peripheral nerves, magnetic stimulation was quickly recognized as a valuable tool to noninvasively activate the cerebral cortex. The subsequent discovery that repetitive transcranial magnetic stimulation (rTMS) could have long-lasting effects on cortical excitability spawned a broad interest in the use of this technique as a new therapeutic method in a variety of neuropsychiatric disorders. Although the current outcomes from initial trials include some...
A distraction can impair or enhance motor performance
Friday, January 15, 2010
Author(s):
Christopher Hemond,Rachel M Brown,Edwin M Robertson
Source:
The Journal of neuroscience : the official journal of the Society for Neuroscience
Humans have a prodigious capacity to perform multiple tasks simultaneously. Being distracted while, for example, performing a complex motor skill adds complexity to a task and thus leads to a performance impairment. Yet, it may not be just the presence or absence of a distraction that affects motor performance. Instead, the characteristics of the distraction may play a critical role in affecting human motor performance. Here, we show that performance of a motor sequence can be substantially...
A preference for contralateral stimuli in human object- and face-selective cortex
Thursday, June 28, 2007
Author(s):
Christopher C Hemond,Nancy G Kanwisher,Hans P Op de Beeck
Source:
PloS one
Visual input from the left and right visual fields is processed predominantly in the contralateral hemisphere. Here we investigated whether this preference for contralateral over ipsilateral stimuli is also found in high-level visual areas that are important for the recognition of objects and faces. Human subjects were scanned with functional magnetic resonance imaging (fMRI) while they viewed and attended faces, objects, scenes, and scrambled images in the left or right visual field. With our...
Shape conveyed by visual-to-auditory sensory substitution activates the lateral occipital complex
Wednesday, May 23, 2007
Author(s):
Amir Amedi,William M Stern,Joan A Camprodon,Felix Bermpohl,Lotfi Merabet,Stephen Rotman,Christopher Hemond,Peter Meijer,Alvaro Pascual-Leone
Source:
Nature neuroscience
The lateral-occipital tactile-visual area (LOtv) is activated when objects are recognized by vision or touch. We report here that the LOtv is also activated in sighted and blind humans who recognize objects by extracting shape information from visual-to-auditory sensory substitution soundscapes. Recognizing objects by their typical sounds or learning to associate specific soundscapes with specific objects do not activate this region. This suggests that LOtv is driven by the presence of shape...
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