scholarly journals How About Glymphatic System Function in Patients With Migraine?

2021 ◽  
Author(s):  
Dong Ah Lee ◽  
Bong Soo Park ◽  
Junghae Ko ◽  
Il Hwan Kim ◽  
Jin Han Park ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Diffusion Tensor ◽  
Age Of Onset ◽  
Neurological Diseases ◽  
Brain Magnetic Resonance Imaging ◽  
Healthy Controls ◽  
System Function ◽  
Glymphatic System ◽  
The Alps ◽  
Magnetic Resonance Imaging Mri

Abstract Background: There have been no studies evaluating the glymphatic system function in patients with migraine. In this study, we evaluated the alterations in glymphatic system function in patients with migraine compared to healthy controls using a diffusion tensor imaging (DTI) analysis along the perivascular space (DTI-ALPS) method. We also investigated the differences in glymphatic system function between migraine patients with and without aura using the ALPS method.Methods: We prospectively enrolled patients with migraine and healthy controls. All brain magnetic resonance imaging (MRI), including DTI, in participants, patients with migraine, and healthy controls were obtained using the same MRI scanner. We calculated the ALPS index and compared the differences in the ALPS index between patients with migraine and healthy controls, and between migraine patients with and without aura. In addition, we conducted a correlation analysis between glymphatic system function and the clinical characteristics of migraine.Results: We enrolled 92 patients with migraine and 80 healthy controls. There were no significant differences in the ALPS index between patients with migraine and healthy controls (1.655 vs. 1.713, p = 0.233), and between migraine patients with and without aura (1.690 vs. 1.645, p = 0.601). There were no significant correlations between the ALPS index and clinical characteristics of migraine, including age (r = -0.070, p = 0.507), age of onset (r = 0.066, p = 0.552), disease duration (r = -0.115, p = 0.306), attack frequency (r = -0.049, p = 0.668), and headache intensity (r = -0.003, p = 0.976).Conclusions: There was no glymphatic system dysfunction in patients with migraine. In addition, there were no differences in glymphatic system function between migraine patients with and without aura. We also demonstrated the feasibility of the ALPS method, which can be used for further research on various neurological diseases.

scholarly journals Brain ageing in schizophrenia: evidence from 26 international cohorts via the ENIGMA Schizophrenia consortium

2022 ◽  
Author(s):  
Constantinos Constantinides ◽  
Laura KM Han ◽  
Clara Alloza ◽  
Linda Antonucci ◽  
Celso Arango ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Large Scale ◽  
Age Of Onset ◽  
Collaborative Study ◽  
Brain Magnetic Resonance Imaging ◽  
Age Difference ◽  
Intracranial Volume ◽  
Age Related ◽  
Brain Ageing ◽  
Increased Risk

Schizophrenia (SZ) is associated with an increased risk of life-long cognitive impairments, age-related chronic disease, and premature mortality. We investigated evidence for advanced brain ageing in adult SZ patients, and whether this was associated with clinical characteristics in a prospective meta-analytic study conducted by the ENIGMA Schizophrenia Working Group. The study included data from 26 cohorts worldwide, with a total of 2803 SZ patients (mean age 34.2 years; range 18-72 years; 67% male) and 2598 healthy controls (mean age 33.8 years, range 18-73 years, 55% male). Brain-predicted age was individually estimated using a model trained on independent data based on 68 measures of cortical thickness and surface area, 7 subcortical volumes, lateral ventricular volumes and total intracranial volume, all derived from T1-weighted brain magnetic resonance imaging (MRI) scans. Deviations from a healthy brain ageing trajectory were assessed by the difference between brain-predicted age and chronological age (brain-predicted age difference [brain-PAD]). On average, SZ patients showed a higher brain-PAD of +3.64 years (95% CI: 3.01, 4.26; I2 = 55.28%) compared to controls, after adjusting for age and sex (Cohen's d = 0.50). Among SZ patients, brain-PAD was not associated with specific clinical characteristics (age of onset, duration of illness, symptom severity, or antipsychotic use and dose). This large-scale collaborative study suggests advanced structural brain ageing in SZ. Longitudinal studies of SZ and a range of mental and somatic health outcomes will help to further evaluate the clinical implications of increased brain-PAD and its ability to be influenced by interventions.

scholarly journals Clinical characteristics and prognosis of anti-alpha-Amino-3-Hydroxy-5-Methyl-4-Isoxazolepropionic acid receptor encephalitis

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Zhe Zhang ◽  
Siyuan Fan ◽  
Haitao Ren ◽  
Lixin Zhou ◽  
Hongzhi Guan
Keyword(s):  
Clinical Characteristics ◽  
Limbic Encephalitis ◽  
Disease Onset ◽  
Clinical Manifestations ◽  
Brain Magnetic Resonance Imaging ◽  
Prognostic Information ◽  
Rare Type ◽  
Lung Cancers ◽  
Acid Receptor ◽  
Magnetic Resonance Imaging Mri

Abstract Background Encephalitis associated with antibodies against alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) is an extremely rare type of antibody-mediated encephalitis. This research aims to investigate the clinical characteristics and prognosis of anti-AMPAR encephalitis. Methods This retrospective study enrolled nine patients with anti-AMPAR encephalitis. Demographic information, clinical manifestations, laboratory and radiological findings, treatment and response were collected and analyzed. These patients were followed up with an average period of 72 weeks to gather prognostic information. Results Nine patients (7 females and 2 males) were enrolled with a mean age at disease onset of 59 years old. Three clinical pictures, including limbic encephalitis (n = 7; 78%), pure amnesia (n = 1; 11%) and fulminant encephalitis (n = 1; 11%) were identified. New symptoms of dysphagia and deafness were identified in the clinical spectrum of anti-AMPAR encephalitis. All patients had positive blood AMPAR antibodies, and six of them (67%) had paired positive antibodies in cerebrospinal fluid (CSF). Brain magnetic resonance imaging (MRI) was abnormal in 75% of the patients with no specific patterns recognized. Six patients (67%) had tumors, including lung cancers and thymomas. After immunotherapy and oncotherapy, partial improvement of neurological symptoms was observed among all 6 patients with available records during their hospitalization. After a mean follow-up of 72 weeks, 3 patients had marked decrease of modified Rankin Scale (mRS) score, 1 patient had unchanged mRS score, 4 patients died and the other one was lost. Conclusions Anti-AMPAR encephalitis mainly presents as limbic encephalitis, and is paraneoplastic in 67% of cases. Thus, intensive screening for tumors is recommended for all anti-AMPAR patients. Although patients showed a good short-term therapeutic response, the overall prognosis was not satisfactory.

Neuromyelitis optica in Brazil: a study on clinical and prognostic factors

2009 ◽  
Vol 15 (5) ◽  
pp. 613-619 ◽  
Author(s):  
DB Bichuetti ◽  
EML Oliveira ◽  
NA Souza ◽  
RLM Rivero ◽  
AA Gabbai
Keyword(s):  
Neuromyelitis Optica ◽  
Age Of Onset ◽  
Care Center ◽  
Brain Mri ◽  
Tertiary Care ◽  
Brain Magnetic Resonance Imaging ◽  
Brain Lesions ◽  
Relapsing Remitting ◽  
First Relapse ◽  
Magnetic Resonance Imaging Mri

Objectives To describe the clinical characteristics of patients with relapsing neuromyelitis optica (NMO) from a tertiary care center in Brazil and compare the groups with normal and abnormal brain magnetic resonance imaging (MRI). Methods Retrospective review of 41 patients followed at the Neuroimmunology Clinic of the Federal University of São Paulo, Brazil, from 1994 to 2007. Results All patients had relapsing-remitting optic-spinal disease, long extending spinal cord lesions, and brain MRI not meeting Barkhof criteria for multiple sclerosis (MS), thus fulfilling the 1999 and 2006 Wingerchuck criteria for NMO. Mean follow-up time was 52 months; mean age of onset was 32.6 years. The mean relapse rate (RR) and progression index (PI) were 1.0 and 0.9, respectively. Twenty-four patients had brain lesions not compatible with MS on MRI, and there were no statistical differences on PI and RR between patients who had brain lesions and patients who did not. Incomplete recovery, but not the type of first relapse, correlated with a worse prognosis. Seventeen patients were tested for NMO-IgG (anti-aquaporin-4 antibody) with 41% positivity. Conclusions In this series, we did not find a statistical difference of disease progression between patients with and without brain lesions, suggesting that the presence of brain abnormalities is not a marker of disease severity.

scholarly journals Clinical Characteristics and Prognosis of Anti-Alpha- Amino-3-Hydroxy-5-Methyl-4-Isoxazolepropionic Acid Receptor Encephalitis

2021 ◽  
Author(s):  
Zhe Zhang ◽  
Siyuan Fan ◽  
Haitao Ren ◽  
Lixin Zhou ◽  
Hongzhi Guan
Keyword(s):  
Clinical Characteristics ◽  
Limbic Encephalitis ◽  
Disease Onset ◽  
Clinical Manifestations ◽  
Brain Magnetic Resonance Imaging ◽  
Prognostic Information ◽  
Rare Type ◽  
Lung Cancers ◽  
Acid Receptor ◽  
Magnetic Resonance Imaging Mri

Abstract Background Encephalitis associated with antibodies against alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) is an extremely rare type of antibody-mediated encephalitis. This research aims to investigate the clinical characteristics and prognosis of anti-AMPAR encephalitis. Methods This retrospective study enrolled nine patients with anti-AMPAR encephalitis. Demographic information, clinical manifestations, laboratory and radiological findings, treatment and response were collected and analyzed. These patients were followed up with an average period of 72 weeks to gather prognostic information. Results Nine patients (7 females and 2 males) were enrolled with the mean age of disease onset as 59 years old. Three clinical syndromes, including limbic encephalitis (n=7; 78%), pure amnesia (n=1; 11%) and fulminant encephalitis (n=1; 11%) were identified. New symptoms of dysphagia and deafness were identified in the clinical spectrum of anti-AMPAR encephalitis. All patients had positive blood AMPAR antibodies, and six of them (67%) had paired positive antibodies in cerebrospinal fluid (CSF). Brain magnetic resonance imaging (MRI) were abnormal in 75% of the patients with no specific patterns recognized. Six patients (67%) had tumors, including lung cancers or thymomas. After immunotherapy and oncotherapy, partial improvement of neurological symptoms was observed among all 6 patients with available records during their hospitalization. During a mean follow-up of 72 weeks, 3 patients had marked improvement of modified Rankin Scale (mRS), one patient had unchanged mRS, 4 patients died and the other one was lost. Conclusions Anti-AMPAR encephalitis mainly presents as limbic encephalitis. Anti-AMPAR encephalitis is paraneoplastic in 67% cases and intensive screening for tumors is recommended for all anti-AMPAR patients. Although patients showed a good short-term therapeutic response, the overall prognosis was not satisfactory.

Clinical characteristics and outcome of multiple sclerosis in Korea: does multiple sclerosis in Korea really differ from that in the Caucasian populations?

2013 ◽  
Vol 19 (11) ◽  
pp. 1493-1498 ◽  
Author(s):  
Su-Hyun Kim ◽  
So-Young Huh ◽  
Woojun Kim ◽  
Min Su Park ◽  
Suk-Won Ahn ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Clinical Characteristics ◽  
Age Of Onset ◽  
Disease Onset ◽  
Western Countries ◽  
Mcdonald Criteria ◽  
Disability Status ◽  
Referral Hospitals ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri

Background: Multiple sclerosis (MS) in Asia is thought to have different clinical characteristics from MS in Western countries; however, previous studies in Asia were performed without properly differentiating neuromyelitis optica (NMO) from MS. Objectives: To evaluate the clinical characteristics of MS in Korea after careful exclusion of potential explanations other than MS, particularly NMO spectrum disorder (NMOSD). Methods: This study is a retrospective review of consecutive MS patients attending five referral hospitals in Korea. All patients’ MS diagnoses were re-evaluated. Results: Of the 105 patients, 70 were female and 35 were male. The mean age of onset was 30.4 years and the mean disease duration was 5.4 years. On initial magnetic resonance imaging (MRI), 58% and 64% fulfilled the criteria for dissemination in space for the 2005 and 2010 McDonald criteria, respectively. Spinal cord lesions were observed in 78% of patients, primarily present as multiple small lesions with a mean length of 0.9 vertebral segments. The median time from disease onset to an Expanded Disability Status Scale 6 was 20 years. Conclusions: After careful exclusion of NMOSD, we found that the clinical pattern of MS in Korea does not fundamentally differ from that seen in Western countries.

scholarly journals The presence of antiautonomic membrane receptor antibodies do not correlate with brain lesions in Chagas' disease

2009 ◽  
Vol 67 (3a) ◽  
pp. 633-638 ◽  
Author(s):  
Marco O. Py ◽  
Leonardo Maciel ◽  
Roberto C. Pedrosa ◽  
Jose H. M. Nascimento ◽  
Emiliano Medei
Keyword(s):  
Brain Mri ◽  
Brain Magnetic Resonance Imaging ◽  
White Matter Lesions ◽  
Brain Lesions ◽  
Autonomic System ◽  
System Function ◽  
Beta Adrenergic ◽  
Brain White Matter ◽  
Magnetic Resonance Imaging Mri ◽  
Parasympathetic Dysfunction

We previously demonstrated correlation between parasympathetic dysfunction and brain white matter lesions in chronic chagasic patients. OBJECTIVE: To correlate serum functional circulating antibodies with beta adrenergic (Ab-β), muscarinic (Ab-M) or muscarinic and beta adrenergic (Ab-Mβ) activity, the autonomic system function and brain lesions in chronic chagasic patients. METHOD: In fifteen consecutive chagasic patients, the autonomic nervous system was evaluated and brain magnetic resonance imaging (MRI) was performed. The sera of all patients were tested to the presence of circulating functional antibodies. RESULTS: Sera from 11 of 15 chronic chagasic patients had some activity (Ab-β: 7; Ab-M: 1; Ab-Mβ: 3); however, there was no significant correlation between the presence of antibodies and the autonomic system function or the presence of hyperintensities in MRI. CONCLUSION: The mechanism involved in the genesis of hyperintense lesions seen in brain MRI of chronic chagasic patients is still unresolved, although apparently related to parasympathetic dysfunction.

scholarly journals Familial neurohypophyseal diabetes insipidus in 13 kindreds and 2 novel mutations in the vasopressin gene

2019 ◽  
Vol 181 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Giuseppa Patti ◽  
Saverio Scianguetta ◽  
Domenico Roberti ◽  
Alberto Di Mascio ◽  
Antonio Balsamo ◽  
...  
Keyword(s):  
Diabetes Insipidus ◽  
Age Of Onset ◽  
Brain Magnetic Resonance Imaging ◽  
Missense Mutations ◽  
Posterior Pituitary ◽  
Gene Encoding ◽  
Adequate Treatment ◽  
Molecular Features ◽  
Exon 1 ◽  
Magnetic Resonance Imaging Mri

Background Autosomal dominant neurohypophyseal diabetes insipidus (adNDI) is caused by arginine vasopressin (AVP) deficiency resulting from mutations in the AVP-NPII gene encoding the AVP preprohormone. Aim To describe the clinical and molecular features of Italian unrelated families with central diabetes insipidus. Patients and methods We analyzed AVP-NPII gene in 13 families in whom diabetes insipidus appeared to be segregating. Results Twenty-two patients were found to carry a pathogenic AVP-NPII gene mutation. Two novel c.173 G>C (p.Cys58Ser) and c.215 C>A (p.Ala72Glu) missense mutations and additional eight different mutations previously described were identified; nine were missense and one non-sense mutation. Most mutations (eight out of ten) occurred in the region encoding for the NPII moiety; two mutations were detected in exon 1. No mutations were found in exon 3. Median age of onset was 32.5 months with a variability within the same mutation (3 to 360 months). No clear genotype–phenotype correlation has been observed, except for the c.55 G>A (p.Ala19Thr) mutation, which led to a later onset of disease (median age 120 months). Brain magnetic resonance imaging (MRI) revealed the absence of posterior pituitary hyperintensity in 8 out of 15 subjects, hypointense signal in 4 and normal signal in 2. Follow-up MRI showed the disappearance of the posterior pituitary hyperintensity after 6 years in one case. Conclusion adNDI is a progressive disease with a variable age of onset. Molecular diagnosis and counseling should be provided to avoid unnecessary investigations and to ensure an early and adequate treatment.

Association Study Between White Matter Microstructure and Intelligence Decline in Schizophrenia

2021 ◽  
pp. 155005942110633
Author(s):  
Junya Matsumoto ◽  
Kenichiro Miura ◽  
Masaki Fukunaga ◽  
Kiyotaka Nemoto ◽  
Daisuke Koshiyama ◽  
...  
Keyword(s):  
White Matter ◽  
Functional Connectivity ◽  
Gray Matter ◽  
Diffusion Tensor ◽  
Region Of Interest ◽  
Healthy Controls ◽  
Resonance Imaging ◽  
White Matter Microstructure ◽  
Magnetic Resonance Imaging Mri ◽  
Diffusion Tensor Imaging Dti

Patients with schizophrenia can exhibit intelligence decline, which is an important element of cognitive impairment. Previous magnetic resonance imaging (MRI) studies have demonstrated that patients with schizophrenia have altered gray matter structures and functional connectivity associated with intelligence decline defined by a difference between premorbid and current intelligence quotients (IQs). However, it has remained unclear whether white matter microstructures are related to intelligence decline. In the present study, the indices of diffusion tensor imaging (DTI) obtained from 138 patients with schizophrenia and 554 healthy controls were analyzed. The patients were classified into three subgroups based on intelligence decline: deteriorated (94 patients), preserved (42 patients), and compromised IQ (2 patients) groups. Given that the DTI of each subject was acquired using either one of two different MRI scanners, we analyzed DTI indices separately for each scanner group. In the comparison between the deteriorated IQ group and the healthy controls, differences in some DTI indices were noted in three regions of interest irrespective of the MRI scanners, whereas differences in only one region of interest were noted between the preserved IQ group and the healthy controls. However, the comparisons between the deteriorated and preserved IQ groups did not show any reproducible differences. Together with the previous findings, it is thought that gray matter structures and functional connectivity are more promising as markers of intelligence decline in schizophrenia than white matter microstructures.

Mean upper cervical cord area (MUCCA) measurement in long-standing multiple sclerosis: Relation to brain findings and clinical disability

2014 ◽  
Vol 20 (14) ◽  
pp. 1860-1865 ◽  
Author(s):  
Marita Daams ◽  
Florian Weiler ◽  
Martijn D Steenwijk ◽  
Horst K Hahn ◽  
Jeroen JG Geurts ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Spinal Cord ◽  
Brain Magnetic Resonance Imaging ◽  
Cervical Cord ◽  
Healthy Controls ◽  
Spinal Cord Atrophy ◽  
Disability Status ◽  
Upper Cervical ◽  
Male Patients ◽  
Magnetic Resonance Imaging Mri

Background: The majority of patients with multiple sclerosis (MS) present with spinal cord pathology. Spinal cord atrophy is thought to be a marker of disease severity, but in long-disease duration its relation to brain pathology and clinical disability is largely unknown. Objective: Our aim was to investigate mean upper cervical cord area (MUCCA) in patients with long-standing MS and assess its relation to brain magnetic resonance imaging (MRI) measures and clinical disability. Methods: MUCCA was measured in 196 MS patients and 55 healthy controls using 3DT1-weighted cervical images obtained at 3T MRI. Clinical disability was measured using the Expanded Disability Status Scale (EDSS), Nine-Hole-Peg test (9-HPT), and 25 feet Timed Walk Test (TWT). Stepwise linear regression was performed to assess the association between MUCCA and MRI measures, and between MUCCA and clinical disability. Results: MUCCA was smaller (mean 11.7%) in MS patients compared with healthy controls (72.56±9.82 and 82.24±7.80 mm2 respectively; p<0.001), most prominently in male patients. MUCCA was associated with normalized brain volume, and number of cervical cord lesions. MUCCA was independently associated with EDSS, TWT, and 9-HPT. Conclusion: MUCCA was reduced in MS patients compared with healthy controls. It provides a relevant marker for clinical disability in long-standing disease, independent of other MRI measures.

scholarly journals Morphological Profiling of Schizophrenia: Cluster Analysis of MRI-Based Cortical Thickness Data

2020 ◽  
Vol 46 (3) ◽  
pp. 623-632
Author(s):  
Yunzhi Pan ◽  
Weidan Pu ◽  
Xudong Chen ◽  
Xiaojun Huang ◽  
Yan Cai ◽  
...  
Keyword(s):  
Cortical Thickness ◽  
Clinical Characteristics ◽  
Age Of Onset ◽  
Symptom Burden ◽  
Structural Mri ◽  
Positive Symptom ◽  
Healthy Controls ◽  
Clinical Patient ◽  
Cortical Thinning ◽  
Mri Scans

Abstract The diagnosis of schizophrenia is thought to embrace several distinct subgroups. The manifold entities in a single clinical patient group increase the variance of biological measures, deflate the group-level estimates of causal factors, and mask the presence of treatment effects. However, reliable neurobiological boundaries to differentiate these subgroups remain elusive. Since cortical thinning is a well-established feature in schizophrenia, we investigated if individuals (patients and healthy controls) with similar patterns of regional cortical thickness form naturally occurring morphological subtypes. K-means algorithm clustering was applied to regional cortical thickness values obtained from 256 structural MRI scans (179 patients with schizophrenia and 77 healthy controls [HCs]). GAP statistics revealed three clusters with distinct regional thickness patterns. The specific patterns of cortical thinning, clinical characteristics, and cognitive function of each clustered subgroup were assessed. The three clusters based on thickness patterns comprised of a morphologically impoverished subgroup (25% patients, 1% HCs), an intermediate subgroup (47% patients, 46% HCs), and an intact subgroup (28% patients, 53% HCs). The differences of clinical features among three clusters pertained to age-of-onset, N-back performance, duration exposure to treatment, total burden of positive symptoms, and severity of delusions. Particularly, the morphologically impoverished group had deficits in N-back performance and less severe positive symptom burden. The data-driven neuroimaging approach illustrates the occurrence of morphologically separable subgroups in schizophrenia, with distinct clinical characteristics. We infer that the anatomical heterogeneity of schizophrenia arises from both pathological deviance and physiological variance. We advocate using MRI-guided stratification for clinical trials as well as case–control investigations in schizophrenia.

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