scholarly journals Evaluation of the Effect of Multiple Linear Gadolinium-Based Contrast Agent Exposures on the Signal Intensity of the Dentate Nucleus in Multiple Sclerosis Patients

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Maryam Mohammadzadeh ◽  
Zahra Sheibani ◽  
Madjid Shakiba ◽  
Amir Reza Azimi ◽  
Arezou Hashemzadeh ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Contrast Agent ◽  
Contrast Agents ◽  
Signal Intensity ◽  
Dentate Nucleus ◽  
Healthy Controls ◽  
Enhanced Mri ◽  
Mri Scans ◽  
The Mean ◽  
Multiple Sclerosis Patients

Background: Magnetic resonance imaging (MRI) with gadolinium (GAD)-based contrast agents has been the imaging modality of choice for early detection and monitoring of multiple sclerosis (MS) patients. Objectives: This study aimed to assess the effect of multiple injections of linear GAD-based contrast agents on the signal intensity of the dentate nucleus (DN) in MS patients. Patients and Methods: A cohort of 122 MS patients with GAD-enhanced MRI scans and 61 healthy controls were enrolled in this study. The final standard GAD-enhanced MRI scans were acquired using 1.5T MRI systems. Non-enhanced T1-weighted MRI was performed to assess the DN hyperintensity. The signal intensity ratio (SIR) was also calculated by setting the regions of interest (ROIs) on the DN and pons and dividing the signal intensity of DN to that of pons. The patients were also divided into two subgroups, based on the total number of MRI exposures (> 4 times vs. others), and the subgroups were compared in terms of the mean SIR and hyperintensity. Results: Overall, 68% (n = 83) of the patients were exposed to a contrast agent more than four times. Of these patients, 31.3% (n = 26) showed DN hyperintensity, while no hyperintensity was found in other patients or healthy controls (P < 0.02 for both). The mean SIRs were 1.10 ± 0.07 and 1.04 ± 0.02 in the patients and healthy controls, respectively (P < 0.001). Besides, the mean SIR was 1.14 ± 0.04 in patients with DN hyperintensity and 1.09 ± 0.07 in other patients (P < 0.001). Based on the results, the mean SIR was 1.12 ± 0.7 in patients with > 4 contrast injections, while it was 1.06 ± 0.04 in patients with < 4 contrast injections (P < 0.001). Conclusion: The SIR and visible DN hyperintensity increased by increasing the number of GAD injections, which could be due to the tissue deposition of GAD.

scholarly journals Signal Intensity Changes in the Dentate Nucleus and Globus Pallidus of Multiple Sclerosis Patients Undergoing Multiple Brain Magnetic Resonance Imaging with Gadolinium-Based Contrast Agents

2021 ◽  
Author(s):  
Yasin Ertuğ Çekdemir ◽  
Nuri Karabay
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Contrast Agents ◽  
Signal Intensity ◽  
Dentate Nucleus ◽  
Resonance Imaging ◽  
Mri Scans ◽  
Intensity Ratios ◽  
Multiple Sclerosis Patients

Objective: To investigate the correlation between cumulative doses of gadolinium-based contrast agents and increased signal intensity (SI) in the dentate nucleus (DN) and globus pallidus (GP). Methods: Our retrospective trial involved 21 multiple sclerosis patients (11 women, 10 men; mean age: 39.21±10.24, range: 20 to 57 years) who underwent a serial number of multiple cranial magnetic resonance imaging (MRI) examinations in the radiology department of our tertiary care center. Average signal intensities on the DN, pons, GP and thalamus on unenhanced T1-weighted magnetic resonance images were taken into account. The signal intensity in the DN was proportioned to the signal intensity in the pons, whereas the signal intensity in GP to the signal intensity in the thalamus. Any relationship between the DN-to-pons or GP-to-thalamus signal intensity ratios and previous gadolinium-based contrast administrations was sought by means of repeated measures ANOVA. Results: Increases in both DN-to-pons and GP-to-thalamus signal intensity ratios displayed a significant correlation with previous administrations of gadolinium-based contrast agents (p<0.001 for both). A remarkable increase was detected in DN-to-pons and GP-to-thalamus signal intensity ratios between the first and last MRI examinations (p<0.001 for both). Conclusion: Our results support the association between increase in the SI of the DN and GP to the number of gadolinium-enhanced MRI scans in MS patients. The increase in T1 SI seems to be linked with the number of enhanced MRI scans.

scholarly journals Lack of increased signal intensity in the dentate nucleus after repeated administration of a macrocyclic contrast agent in multiple sclerosis

Medicine ◽  
2016 ◽  
Vol 95 (39) ◽  
pp. e4624 ◽  
Author(s):  
Philipp Eisele ◽  
Angelika Alonso ◽  
Kristina Szabo ◽  
Anne Ebert ◽  
Melissa Ong ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Contrast Agent ◽  
Signal Intensity ◽  
Dentate Nucleus ◽  
Repeated Administration

scholarly journals The Assessment of Serum Concentrations of AGEs and Their Soluble Receptor (sRAGE) in Multiple Sclerosis Patients

2021 ◽  
Vol 11 (8) ◽  
pp. 1021
Author(s):  
Aleksandra Damasiewicz-Bodzek ◽  
Beata Łabuz-Roszak ◽  
Bartłomiej Kumaszka ◽  
Bartosz Tadeusiak ◽  
Krystyna Tyrpień-Golder
Keyword(s):  
Multiple Sclerosis ◽  
Stable Phase ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Healthy Controls ◽  
Soluble Receptor ◽  
Serum Concentrations ◽  
Degree Of Disability ◽  
The Mean ◽  
Multiple Sclerosis Patients

Background: Advanced glycation end products (AGEs) are involved in the pathogenesis of many diseases, including neurodegenerative diseases such as multiple sclerosis (MS). The aim of the study was to determine serum concentrations of AGEs and their soluble receptor (sRAGE) in MS patients and healthy controls and to investigate their possible influence on disease activity. Methods: Serum concentrations of AGE and sRAGE in patients with MS and healthy controls were determined by enzyme-linked immunosorbent assay (ELISA). Results: The mean serum AGE concentration in patients with MS was higher than in healthy controls, whereas the mean serum sRAGE concentration was lower than in the control group. However, the differences were not statistically significant. In MS patients, serum AGE and sRAGE concentrations did not differ significantly, depending on the duration of the disease and the Expanded Disability Status Scale (EDSS) score. Conclusions: Multiple sclerosis may be accompanied by disturbances of the AGE-sRAGE axis. However, further studies are warranted to confirm it. The duration of the disease and the degree of disability do not seem to affect the progression of the glycation process, particularly in the stable phase of the disease.

The Relationship Between Serum Orexin A, TGF-β, and Leptin Levels with Body Mass Index in Multiple Sclerosis Patients

2021 ◽  
Author(s):  
Sepideh Moharami ◽  
Alireza Nourazarian ◽  
Masoud Nikanfar ◽  
Delara Laghousi ◽  
behrouz shademan ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Serum Level ◽  
Serum Levels ◽  
Healthy Controls ◽  
Control Groups ◽  
Orexin A ◽  
The Mean ◽  
Multiple Sclerosis Patients ◽  
And Control ◽  
The Relationship

Abstract Backgrounds: Multiple Sclerosis (MS) is a chronic inflammatory and autoimmune disease linked to several inflammatory and dietary parameters. This study was carried out to determine the relationship between serum leptin, orexin-A, and TGF-β levels with BMI in MS patients.Methods and results: In this cross-sectional study, 25 relapsing-remitting multiple sclerosis (RRMS) patients and 40 healthy controls were enrolled. The serum level of Leptin, Orexin-A, and TGF- were measured by the Enzyme-linked immunosorbent assay (ELISA). The data was analyzed using descriptive statistics, t-test, Chi-square test, and Linear regression test. A total of 65 volunteers, including 25 MS patients and 40 healthy, were enrolled in the study. The mean age of individuals in the case and control groups was 38.04 ± 7.53 and 40.23 ± 5.88. There were no statistically significant differences between the case and control groups regarding gender, age, alcohol, and cigarette use (P>0.05). The mean serum levels of Orexin-A and TGF-ß were lower among multiple sclerosis patients than in healthy controls, but leptin was higher (42.8 vs. 18.9 ng/ml, P<0.001). The relationship between BMI and serum levels of Orexin-A, TGF-ß, and Leptin among Multiple Sclerosis patients was not statistically significant (P > 0.05).Conclusion: Our results showed that the serum levels of Orexin-A and TGF-β were significantly lower. The serum level of leptin was higher among multiple sclerosis patients than among healthy controls. Also, there was no statistically significant relationship between BMI and serum levels of Orexin-A, TGF-ß, and Leptin among multiple sclerosis patients.

Effect of Self - Care Program on the Self- Esteem of Multiple Sclerosis Patients

2009 ◽  
Vol 24 (S1) ◽  
pp. 1-1
Author(s):  
H. Madani ◽  
H. Navipoor ◽  
P. Roozbayani
Keyword(s):  
Multiple Sclerosis ◽  
Self Care ◽  
Care Program ◽  
Self Esteem ◽  
The Self ◽  
Self Report ◽  
The Mean ◽  
Muscular Spasm ◽  
Multiple Sclerosis Patients ◽  
Paired T Test

Aims:According to decreased self- esteem in multiple sclerosis (MS) patients, it is necessary to utilize appropriate methods in order to improve self- esteem in MS patients. So this study was conducted on patients with MS supported by the Iranian MS society for determining the effect of self - care program on their self- esteem.Method:In this semi - experimental study 34 patients with MS who were not in the acute phase of disease were selected. The data were collected via personal questionnaires, problem list, Cooper and smith standard questionnaire for self- esteem and self report check lists. Self - care program(self - care for muscular spasm, fatigue, constipation and amnesia and …) was educated, then it was performed for one month period and the data were analyzed using paired t- test, wilcoxon, croscal - wallis and manwithney tests.Results:Application of self - care program improve the self- esteem and reduced some symptoms such as muscular spasm, fatigue, constipation and amnesia in MS patients. The mean valve of self- esteem increased from 54 before performing the program to 68 after the program ( p < 0.05).Conclusion:Using self-care program can be an effective method for improving self- esteem of MS patients.

TNF-alpha Production by Peripheral Blood Monocytes in Multiple Sclerosis Patients and Healthy Controls

2015 ◽  
Vol 44 (6) ◽  
pp. 590-601 ◽  
Author(s):  
Mehrdad Farrokhi ◽  
Masoud Etemadifar ◽  
Maryam Sadat Jafary Alavi ◽  
Sayyed Hamid Zarkesh-Esfahani ◽  
Mohaddeseh Behjati ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Peripheral Blood ◽  
Tnf Alpha ◽  
Healthy Controls ◽  
Blood Monocytes ◽  
Peripheral Blood Monocytes ◽  
Alpha Production ◽  
Multiple Sclerosis Patients

CRYAB modulates the activation of CD4+ T cells from relapsing–remitting multiple sclerosis patients

2013 ◽  
Vol 19 (14) ◽  
pp. 1867-1877 ◽  
Author(s):  
Que Lan Quach ◽  
Luanne M Metz ◽  
Jenna C Thomas ◽  
Jonathan B Rothbard ◽  
Lawrence Steinman ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
T Cells ◽  
Cytokine Production ◽  
Clinical Signs ◽  
Healthy Controls ◽  
Relapsing Remitting ◽  
Remitting Multiple Sclerosis ◽  
Multiple Sclerosis Patients ◽  
Relapsing Remitting Multiple Sclerosis

Background: Suppression of activation of pathogenic CD4+ T cells is a potential therapeutic intervention in multiple sclerosis (MS). We previously showed that a small heat shock protein, CRYAB, reduced T cell proliferation, pro-inflammatory cytokine production and clinical signs of experimental allergic encephalomyelitis, a model of MS. Objective: We assessed whether the ability of CRYAB to reduce the activation of T cells translated to the human disease. Methods: CD4+ T cells from healthy controls and volunteers with MS were activated in vitro in the presence or absence of a CRYAB peptide (residues 73–92). Parameters of activation (proliferation rate, cytokine secretion) and tolerance (anergy, activation-induced cell death, microRNAs) were evaluated. Results: The secretion of pro-inflammatory cytokines by CD4+ T cells was decreased in the presence of CRYAB in a subset of relapsing–remitting multiple sclerosis (RRMS) participants with mild disease severity while no changes were observed in healthy controls. Further, there was a correlation for higher levels of miR181a microRNA, a marker upregulated in tolerant CD8+ T cells, in CD4+ T cells of MS patients that displayed suppressed cytokine production (responders). Conclusion: CRYAB may be capable of suppressing the activation of CD4+ T cells from a subset of RRMS patients who appear to have less disability but similar age and disease duration.

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