Status In Multiple Sclerosis Patients Research Articles

Waist Circumference and Body Mass Index as Predictors of Disability Progression in Multiple Sclerosis: A Systematic Review and Meta-Analysis.

Background: While obesity has been shown to elevate the risk of developing multiple sclerosis (MS), there is a lack of strong evidence regarding its role in the disability progression and status of MS patients. Methods: This systematic review and meta-analysis aimed to provide comparative estimates of WC and BMI in patients with MS (PwMS) and to investigate potential associations between the waist circumference (WC) and body mass index (BMI) and demographic and specific MS characteristics. Adhering to PRISMA guidelines, a detailed search of the MEDLINE PubMed, Cochrane Library, and Scopus databases was conducted. Results: A total of 16 studies were included. The pooled mean WC and BMI among PwMS was estimated to be 87.27 cm (95%CI [84.07; 90.47]) and 25.73 (95%CI [25.15; 26.31]), respectively. Meta-regression models established a significant bidirectional relationship between WC and the Expanded Disability Scale (EDSS) (p < 0.001) but not between BMI and EDSS (p = 0.45). Sensitivity analyses showed no association between WC and age (p = 0.48) and a tendency between WC and disease duration (p = 0.08). Conclusions: Although WC measurements classify PwMS as normal weight, BMI measurements classify them as overweight. Therefore, WC should complement BMI evaluations in clinical practice. Additionally, our findings highlight the significant association between abdominal fat, as indicated by WC, and disease progression. Considering the heightened risk of cardiovascular comorbidity and mortality among PwMS, we recommend integrating both WC and BMI as standard anthropometric measurements in routine clinical examinations and targeted prevention strategies for PwMS.

Associations between Mediterranean Diet Adherence, Quality of Life, and Mental Health in Patients with Multiple Sclerosis: A Cross-Sectional Study.

The Mediterranean diet (MD) is well-known as a diet which may exert a protective effect against neurodegenerative diseases, including multiple sclerosis (MS). To date, only a few clinical surveys have assessed the potential effects of the MD in patients with MS. The purpose of the present study is to evaluate the potential effects of MD compliance on disease disability, quality of life, physical activity, depressive symptomatology, and blood biochemical parameters related to nutritional status in MS patients, considering several socio-demographic, anthropometric, and lifestyle characteristics. This is a cross-sectional study conducted on 558 adults with MS aged 18-64 years. Relevant questionnaires were utilized to evaluate socio-demographic and anthropometric parameters, disease disability (Expanded Disability Status Scale, EDSS), multidimensional health-related quality (MS Quality of Life-54, MSQOL-54), physical activity levels (International Physical Activity Questionnaire, IPAQ), depression (Beck Depression Inventory II, BDI-II), and MD adherence (MedDietScore), while several blood biochemical parameters were retrieved from the patients' medical records. Enhanced MD compliance was independently associated with a decreased frequency of overweight/obesity, as well as abdominal obesity, in patients suffering from MS. Elevated MD compliance was also independently associated with a decreased incidence of advanced disease disability, a higher prevalence of elevated physical activity, an improved quality of life, and lower depressive symptoms, as well as higher levels of certain blood biochemical parameters, which are effective indicators of iron deficiency and malnutrition. The present study found that higher MD adherence may slow down disease disability, promoting a better quality of life and mental health in adults with MS. Future prospective surveys are required to obtain conclusive results.

Assessing Sustained B-Cell Depletion and Disease Activity in a French Multiple Sclerosis Cohort Treated by Long-Term IV Anti-CD20 Antibody Therapy

Few studies have investigated sustained B-cell depletion after long-term intravenous (IV) anti-CD20 B-cell depleting therapy (BCDT) in multiple sclerosis (MS) with respect to strict and/or minimal disease activity. The main objective of this study was to investigate how sustained B-cell depletion after BCDT influences clinical and radiological stability as defined by “no evidence of disease activity” (NEDA-3) and “minimal evidence of disease activity” (MEDA) status in MS patients at 12 and 18 months. Furthermore, we assessed the frequency of serious adverse events (SAE), and the influence of prior lymphocytopenia-inducing treatment (LIT) on lymphocyte subset counts and gammaglobulins in MS patients receiving long-term BCDT. We performed a retrospective, prospectively collected, study in a cohort of 192 MS patients of all clinical phenotypes treated by BCDT between January 2014 and September 2021. Overall, 84.2% and 96.9% of patients attained NEDA-3 and MEDA status at 18 months, respectively. Sustained CD19+ depletion was observed in 85.8% of patients at 18 months. No significant difference was observed when comparing patients achieving either NEDA-3 or MEDA at 18 months and sustained B-cell depletion. Compared to baseline levels, IgM and IgG levels on BCDT significantly decreased at 6 months and 30 months, respectively. Patients receiving LIT prior to BCDT showed significant CD4+ lymphocytopenia and lower IgG levels compared to non-LIT patients. Grade 3 or above SAEs were rare. As nearly all patients achieved MEDA at 18 months, we suggest tailoring IV BCDT after 18 months given the occurrence of lymphocytopenia, hypogammaglobulinemia, and SAE after this time point.

Prevalence of poor nutrition status in multiple sclerosis patients assessed by different diagnostic tools

147 patients were included in the study. The nutritional status was assessed by NRS 2002, GLIM, and body composition analysis. The routine biochemical parameters were measured. Deterioration of the nutritional status was observed in 87.8% of patients. GLIM criteria indicated that 20% of patients were malnourished and 80% were at risk. The percentage of patients with excess body mass was 46.8%, and of underweight patients was 6.6%. The risk of malnutrition was positively associated with low content of adipose tissue (R=-0.24; p=0.00), low BMI (R=-0.22; p=0.00), and higher weight loss in the last 6 months (R=0.47; p=0.00). Additionally, a significant (p<0.05) correlation between malnutrition state and s-albumin (R=-0.2) and CRP (R=0.23) was observed. Overweight and obesity concerned a large proportion of the studied group of MS patients, but this does not exclude the risk of malnutrition. Dietary care and regular outpatient nutritional status assessment should be provided throughout the disease.

Immunization status in patients with multiple sclerosis: Across-sectional, monocenter study in Austria.

Patients with multiple sclerosis (MS) under certain disease-modifying therapies (DMT) show a higher risk of infection and a lower immune response to vaccination. Hence, assessing immunization status prior to DMT start and, where necessary, performing vaccinations is recommended. We aimed to determine the immunization status in MS patients and to identify factors associated with low vaccination rates. Patients with MS who were seen at the MS clinic of the Medical University of Innsbruck throughout a period of 14 months in 2020 and 2021 were eligible for inclusion into this prospective, single-center study. Immunization status against 17 different pathogens was obtained from vaccination certificate and by patient questionnaire. Antibody detection against seven antigens was performed in peripheral blood. Of 424 patients with MS at a mean age of 43 ± 12 years, the vast majority had vaccinations against tetanus (94%), diphtheria (92%), and poliomyelitis (90%), whereas a lower proportion had vaccinations against tick-borne encephalitis (70%), pertussis (69%), hepatitis B (65%), rubella (55%), hepatitis A (50%), measles (49%), mumps (47%), and only a minority against influenza (10%), pneumococcal (6%) and meningococcal disease (4%), human papillomavirus (4%), yellow fever (2%), and varicella zoster virus (1%). A total of 87% received vaccination against SARS-CoV-2. Overall, higher vaccination rates were associated with younger age, relapsing disease course, and education level. Misinformation on infectious diseases and vaccines was associated with lower vaccination rates. The majority of MS patients did not fulfil vaccination recommendations. Efforts to increase vaccination rates, preferentially before DMT start, should be promoted.

Body Composition in Multiple Sclerosis Patients and Its Relationship to the Disability Level, Disease Duration and Glucocorticoid Therapy.

Background: Patients with multiple sclerosis (MS) have many potential factors (spasticity, immobilization, glucocorticoids use) for the deterioration of body composition. Aim: To assess the nutritional status (by classical anthropometry and by bioelectrical impedance analysis (BIA)) in MS patients and to correlate it with clinical state, MS duration time and the presence of glucocorticoid therapy in anamnesis (ever used). Methods: Anthropometrical (BMI and waist and hip circumferences, waist-to-height ratio (W/HtR), and waist-to-hip ratio (WHR)) and body composition (BIA) data were evaluated in 176 patients with MS. Fat mass (FM), and fat-free mass (FFM) were expressed as kilograms (kg), percentage (%) and indexes (FMI: fat mass index, FFMI: fat-free mass index) expressed in kg/m2. The median Expanded Disability Status Scale score was 4.5. Patients were then divided according to EDSS score as mild (EDSS 1.0–4.0) or moderate (EDSS 4.5–6.5) disability subgroup. Results: Waist c., WHtR, WHR, and FM% were significantly higher in the moderate MS group (p < 0.01; p < 0.001; p < 0.001; and p < 0.05, respectively). Whilst, FFM% was significantly lower (p < 0.05). BMI did not correlate significantly with any disability status score and MS time. Significant correlations were observed between EDSS, ΔEDSS and MS time and Waist c., WHtR, WHR, FM% and FFM%. WHtR had the strongest significance (p < 0.0001 vs. EDSS; p < 0.0001 vs. ΔEDSS; and p < 0.01 vs. MS time, respectively). After the adjustment to the MS time, only FM% was no longer significantly related to both EDSS and ΔEDSS. MS duration time, EDSS, ΔEDSS, WHtR, FM(kg), FM%, and FMI were significantly higher in the patients with a positive history of glucocorticoid therapy (all p < 0.05). Whilst, FFM% was significantly lower in MS patients treated with glucocorticoids (p < 0.01). Conclusions: Greater disability in MS patients is strongly related to lower fat-free mass and higher fat mass, especially with the abdominal distribution, irrespective of the duration time of the disease. Oral glucocorticoid therapy seems to have a negative impact on the body composition of MS patients. However, further prospective multifactorial studies in this field have to be done. For the proper assessment of nutritional status in MS patients, Waist c., WHtR, WHR, or body composition parameters seem to be of greater use than BMI.

Disease perception impacts quality of life and fatigue in relapsing–remitting multiple sclerosis patients

AbstractObjectiveThere is little research on the relationship between self‐concept, psychiatric symptoms and quality of life among multiple sclerosis (MS) patients. We assessed the impact of disease perception (expectation and knowledge) on these metrics according to time from diagnosis.MethodsThis was an observational, cross‐sectional, multicenter study. Group 1 included patients up to 3 months from MS diagnosis, whereas group 2 included patients with MS diagnosis established for &gt;12 months and &lt;36 months. A 19‐item true/false questionnaire developed by the investigators to assess disease perception, Hospital Anxiety and Depression Scale (HADS), Fatigue Severity Scale and three‐level level version of EQ‐5D questionnaires were used.ResultsA total of 90 patients from six centers were included (38 in group 1). A total of 80% had a good disease knowledge, whereas just 48% reported positive expectations. There were no differences in disease knowledge, disease expectations, HADS, Fatigue Severity Scale and EQ‐5D. We found an inverse correlation between disease knowledge and problems in self‐care (P = 0.018) and fatigue (P = 0.032). Patients with the worst expectations about the disease were more anxious (P = 0.012 on HADS and P &lt; 0.001 on EQ‐5D). They also reported more problems in mobility (P = 0.002), self‐care (P = 0.005), usual activities (p = 0.009) and pain (P = 0.001), and a worst health status compared with the past 12 months (P &lt; 0.001) and with the best imaginable status (P &lt; 0.001).ConclusionsOur study showed no association between disease duration and disease perception. Patients with less disease knowledge reported more problems in self‐care and higher fatigue scores. Patients with the worst disease expectations were more anxious and reported a worse health status. More attention should be paid to perceived health status in MS patients.

Nutritional status in patients with advanced-stage multiple sclerosis.

Motor and swallowing dysfunctions in multiple sclerosis (MS) unbalance calorie intake and energy expenditure, modifying nutritional status. Only one study has described nutritional status in MS patients at early disease stages (median Expanded Disability Status Scale [EDSS]=3), but this has never been assessed in the most severe cases. The goal of the present study was to describe nutritional status in advanced-stage MS. The study was a non-interventional retrospective analysis of a prospective registry. We reviewed medical files of consecutive MS patients admitted for annual follow-up in a physical and rehabilitation medicine unit between May 2016 and October 2018. Malnutrition for frail people, according to the French Health Authority (Haute Autorité de Santé [HAS]) definition, was our composite primary outcome criterion: body mass index (BMI) <21kg/m2 and/or albumin<35g/L. First, we performed a descriptive analysis of the nutritional status. Second, we studied the association between malnutrition and MS characteristics in univariate and multivariate analyses. A total of 163 patients with median EDSS=8 [7; 8.5] were included. Ninety-three patients (57%) met HAS malnutrition criteria (36% with albumin <35g/L, 31% with BMI <21kg/m2 and 10% with both). Malnutrition was associated in univariate analysis with MS severity (EDSS ≥8.5, p=0.0003), primary progressive type of MS (p=0.01) and swallowing disorders (p=0.002). Multivariate analysis showed that low disability status (EDSS <7) was the only independent (protective) factor associated with malnutrition (OR=0.2, p=0.03). Malnutrition is frequent in advanced stages of MS and is probably a key point for therapeutics, which has never been demonstrated previously. A standardized evaluation should be developed to improve nutritional therapeutic strategies in this population.

The comparison of fatigue, sleep quality, physical activity, quality of life, and psychological status in multiple sclerosis patients with or without COVID-19

PurposeThe study was purposed to investigate the effect of COVID-19 disease on fatigue, sleep quality, physical activity, quality of life, and psychological status in people with MS. MethodsA total of 104 people with MS, including 46 of them with COVID-19 disease history, were enrolled in the study. All patients were evaluated with the Expanded Disability Status Scale (EDSS), Fatigue Severity Scale (FSS), Pittsburgh Sleep Quality Index (PSQI), International Physical Activity Questionnaire Short Form (IPAQ-SF), the EuroQoL Instrument (EQ-5D-3L), the Fear of COVID-19 Scale (FCV-19S) and the Coronavirus Anxiety Scale (CAS). ResultsPeople with MS in the COVID-19 positive group had a significantly lower IPAQ-Total score (p = 0.014). Besides, the FCV-19S scores of COVID-19 positive patients were significantly higher (p = 0.006). EQ-5D-3L Index and EQ-5D-3L VAS scores were higher in the group with COVID-19 (p1 = 0.021, p2 = 0.014, respectively). FCV-19S had a moderate correlation with EDSS (r = -0.362). IPAQ-Total was moderately associated with MS duration, EDSS and FSS (r1 = -0.471, r2 = -0.389, r3 = -0.388, respectively). The EQ-5D-3L Index was moderately correlated with FSS (r1 = -0.404). There was a weakly significant relationship between EQ-5D-3L Index and BMI, MS duration, PSQI and CAS (r1 = -0.471, r2 =-0.389, r3 = -0.388, r4 = -0.326, respectively). On the other hand, EQ-5D-3L was moderately associated with VAS and EDSS and PSQI (r1 = -0.393, r2 = -0.357, respectively). ConclusionCOVID-19 negatively affected the people with MS's physical activity and coronavirus related fear parameters. However, the causality of this influence should be investigated in detail.

Nutritional status of multiple sclerosis (MS) patients attending Kasr Alainy MS unit: an exploratory cross-sectional study

BackgroundNutrition was claimed to be a factor in MS causation, course, complications, and management. Several studies were conducted to assess the nutritional status of MS patients; however, few studies were conducted to assess this problem in Egypt. Therefore, the purpose of the current study was to assess the nutritional status of a sample of MS patients.MethodsThe researchers conducted an exploratory cross-sectional study among 76 relapsing-remitting MS (RRMS) patients attending Kasr Alainy Multiple Sclerosis Unit (KAMSU) from October 2018 to January 2019 to assess the nutritional status of a sample of MS patients. Data were collected using a structured interview questionnaire including an inquiry about the socioeconomic status, and nutritional status using anthropometric measurements, patient-generated subjective global assessment (PG-SGA), semi-quantitative food frequency questionnaires (SQFFQ), and hemoglobin level measurement. Assessment of fatigue was done using the Modified Fatigue Impact Scale 5-items version.ResultsThe mean age of the study participants was 30 ± 6 years. The disease duration ranged from 2 to 264 months. Malnutrition was prevalent among 67.1% (27.6 % overweight, 36.8% obese, and 2.6% underweight). Half of the investigated patients were anemic. According to the PG-SGA, more than half of the studied patients (53.9%) were classified as moderately or suspected malnourished. The unhealthy dietary habits such as taking only a few meals, junk food intake and skipping breakfast were observed in considerable proportions of the group. The SQFFQ revealed overconsumption of energy and fat, and less than acceptable consumption of dietary fibers by most of the studied patients.ConclusionsOverweight, obesity, anemia, and unhealthy dietary habits were prevalent among the RRMS patients attending the KAMSU. Nutrition care service is extremely needed for this group of patients.

Cytokines status in multiple sclerosis patients with comorbid recurrent depressive disorder

IntroductionThe presence of some common immunological pathogenesis mechanisms in multiple sclerosis and depression suggests the possibility of comorbid depressive disorder formation in multiple sclerosis patients, which significantly worsens their quality of life and patient’s compliance. In this regard, the depressive pathology diagnosis in people suffering from multiple sclerosis acquires important scientific and practical value.ObjectivesThe aim of the study was the cytokine status peculiarities identification in multiple sclerosis patients with comorbid recurrent depressive disorder (F33).MethodsThe cytokines content in patient’s blood mononuclear cells culture supernatants was carried out by ELISA. The recurrent depressive disorder diagnosis was established based on ICD-10 criteria. The depressive disorders symptoms severity was determined according to the M. Hamilton and A.T. Beck depression scales, as well as during the clinical interviewResultsA higher production of IL-6 was noted in multiple sclerosis patients with mild recurrent depressive disorder (F33.00), in contrast to patients without the affective symptoms. The IL-1β, TNF-α, IL-6 contents in the blood mononuclear cells culture supernatants of patients with severe recurrent depressive disorder (F33.2) exceeded the corresponding parameters of patients with mild depressive symptoms. A direct correlation between the depression severity and IL-1β, TNF-α, IL -6 spontaneous production by blood mononuclear cells of patients with multiple sclerosis was found.ConclusionsThe severity of recurrent depressive disorder correlates with a change in the parameters of the cytokine status: severe depressive symptoms are accompanied by a change in the functional activity of immune cells and an increase in the production of cytokines synthesized by type I T-helpers.DisclosureNo significant relationships.

Visual deficits and cognitive assessment of multiple sclerosis: confounder, correlate, or both?

The relationship between visual impairment and cognitive performance in multiple sclerosis (MS) remains poorly understood. To determine associations between visual acuity and optical coherence tomography (OCT) measures with cognitive performance of MS patients and healthy controls (HCs). 141 MS patients (with and without MS optic neuritis; MSON) and 50 HCs underwent neuropsychological, visual, and OCT testing. California Verbal Learning Test (CVLT-II), Brief Visuospatial Memory Test (BVMT-R), and Symbol Digit Modalities Test (SDMT) were used. Patients with test performance below -1.5 standard deviations of the mean HCs scores were labeled as cognitive impairment. Visual ability was assessed with 100%, 2.5%, and 1.25% low-contrast letter acuity (LCLA) charts. OCT-derived peripapillary retinal nerve fiber layer (pRNFL) thickness, macular volume (MV), macular ganglion cell inner plexiform (mGCIP) thickness (as a sum of GC and IP layers), and macular inner nuclear layer (mINL) were computed. 100% and 2.5% LCLA associated with SDMT in MS and HCs (p < 0.001; and p < 0.012, respectively). In MSON patients, visually demanding tests were explained by pRNFL and macular volume for SDMT (β = 0.172, p = 0.039 and β = 0.27, p = 0.001) and MV for BVMT-R (β = 0.21, p = 0.012). In non-MSON, only mINL was predictor of CVLT-II. pRNFL and MV predicted cognitive impairment with an accuracy of 72.2% (Negelkerke R2 = 0.234). These findings were driven by associations within the progressive MS subgroup. HC's SDMT performance was explained by mGCIP (β = 0.316, p = 0.001). Both LCLA and OCT-based measures (pRNFL and macular volume) were associated with MS cognitive performance. OCT-based measures were also significant predictors of cognitive status in MS patients. mGCIP associated with cognitive performance in HCs.

The effect of tonsillectomy on John Cunningham virus serological status in multiple sclerosis patients: A retrospective case–control study

Tonsils are believed to be the initial site of the John Cunningham virus (JCV) infection. The long-term effect of childhood tonsillectomy on JCV status in multiple sclerosis (MS) patients has not been investigated. In this retrospective case–control study, we analyzed data of 144 JCV seropositive cases and 82 JCV seronegative controls from three outpatient MS clinics in the United States. Early tonsillectomy (before the age of 8) was reported among 8 (5.56%) JCV seropositive subjects and 19 (23.17%) controls. Early tonsillectomy was associated with JCV negative status (adjusted odds ratio = 5.39, 95% confidence interval = 2.13–13.62, p < 0.001) independent of age and gender.

Vitamin D status in patients with multiple sclerosis: an association with insolation, disease course, and HLA-DRB1 gene polymorphism

Recent systematic reviews and a meta-analysis have shown that there is insufficient evidence on the relationship of multiple sclerosis (MS) to vitamin D supplementation Objective : to assess the relationship of vitamin D status in MS patients to insolation, disease course, and HLA-DRB1 gene polymorphism. Patients and methods. The one-stage study enrolled 90 patients with relapsing-remitting MS (a study group) and 87 volunteers without this disease (a control group). The enrolled were born and live in the Altai Territory of the Russian Federation. The serum level of 25(OH)D was measured by enzyme immunoassay. Results and discussion . 25(OH)D &lt;30 ng/ml was more common in patients with MS than that in the controls. There were no intergroup differences in the time spent in the sun for 6 months before inclusion in the study (p=0.020). The level of 25(OH)D was higher in the high insolation period from April to September than that in the low insolation period from October to March in both patients with MS (p&lt;0.005) and controls (p&lt;0.001). There was no association of 25(OH)D levels with urban and rural residence, gender, age at MS onset, severity of neurological disorders, their progression rate, and MS risk alleles within the HLA-DRB1 gene (03, 13, 15). Conclusion . Vitamin D deficiency is more common in patients with MS than in those without this disease. This is unlikely to be due to the differences in the radiation received from the sun. The final conclusion on the relationship of vitamin D to MS can be made after obtaining the results of a prospective follow-up.

Relationship between retinal thinning, disease duration and disability status in multiple sclerosis patients

AbstractPurposeTo assess changes in the pattern of the neuro‐retina thinning during the evolution of multiple sclerosis (MS).Method64 eyes of healthy controls and 89 eyes of patients with MS without previous episode of optic neuritis were included in the study. Measurements were performed using the Posterior Pole Retinal Thickness Map protocol [shows the thickness of the retina throughout the posterior pole (volumetric examination of 30° × 25° OCT]) with the Heidelberg Spectralis optical coherence tomography (OCT) device. We analysed the 8 × 8 grid placed along the fovea symmetrically with the papilla, dividing patients with MS into 5 different groups at intervals of 5 years of disease duration and a group of patients with a few months of diagnosis.ResultsMS patients presented a significant thinning of the retinal nerve fibre layer (RNFL) and the ganglion cell layer (GCL). This thinning is visible and significant even in the first year after symptoms onset in RNFL and GCL. In addition, an inverse relationship between the thickness of these layers and the time of disease evolution was found, existing cells with a moderate‐strong relationship mainly in the GCL and RNFL. In contrast there is negative but poor correlation between retinal thinning of these 2 retinal layers and Expanded Disability Status Scale (EDSS).ConclusionAlthough there is no significant peripapillary damage in the first months of the disease, we can find a significant thinning in the RNFL and GCL around the macula. GCL seems to be the layer that presents a significant thinning earlier than the RNFL and stronger relationship with disease duration. On the other hand, EDSS does not seems to be so influent on retinal thinning than disease duration.

Characterization of Contrast-Enhancing and Non-contrast-enhancing Multiple Sclerosis Lesions Using Susceptibility-Weighted Imaging.

Susceptibility-weighted magnetic resonance imaging (MRI) (SWI) offers additional information on conventional MRI contrasts. Central veins can be identified within lesions, and recently, it has been suggested that multiple sclerosis (MS) lesions with slowly expanding demyelination, so-called smoldering lesions, can be identified by a phase rim surrounding the lesion. We analyzed post-contrast SWI in regard to intrinsic lesion characteristics in a cohort of MS patients. A total of 294 MS patients were evaluated using a 3-T MRI. A comprehensive MRI protocol was used including post-contrast SWI. Lesions of at least 5 mm in size were analyzed on conventional MRI and SWI with a structured reporting scheme with a focus on SWI lesion characteristics. A total of 1,323 lesions were analyzed: 1,246/1,323 (94%) were non-enhancing and 77/1,323 (6%) were contrast-enhancing (CE) lesions. In CE lesions, the following patterns were seen: contrast enhancement was nodular in 34/77, ring-shaped enhancement was present in 33/77, and areas of peripheral enhancement were present in 10/77. In CE lesions, an association with central veins was found in 38/77 (50%). In 75/1,246 (6%) non-enhancing lesions, a central dark dot in keeping with a central vein was seen, whereas 162/1,246 (13%) showed peripheral hypointense dots/rims, 199/1,246 (16%) showed scattered hypointense dots mainly within the lesion area, and in 374/1,246 (30%), no SWI hypointensity was detected. Furthermore, 436/1,246 (35%) lesions showed isointensity to the surrounding tissue and were not visible on SWI. SWI is able to offer additional aspects of MS pathology also when used after the application of a contrast agent. Veins connected to lesions, a potentially useful marker in the differential diagnosis of MS, were seen in about 50% of enhancing lesions. Susceptibility artifacts, suggested to mark the presence of myelin-laden macrophages and smoldering inflammation, were visible in 28% of lesions as hypointense dots in and in the periphery of the lesion. Given those results, SWI may provide practical useful additional information in the evaluation of the lesion status in MS patients.

Correlation between Magnetization Transfer Ratio and Functional Status in Multiple Sclerosis patients (P5.2-046)

Correlation between Magnetization Transfer Ratio and Functional Status in Multiple Sclerosis patients (P5.2-046)

Work status and cognitive performance in patients with relapsing remitting multiple sclerosis

Fil: Cores, Evangelina Valeria. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos Eva Peron; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas; Argentina

Brain MRI Lesions are Related to Bowel Incontinence in Multiple Sclerosis.

Bowel incontinence in multiple sclerosis might be associated with specific lesion sites. This study intended to determine associations between bowel incontinence and cerebral multiple sclerosis lesions using a voxel-wise lesion symptom mapping analysis. We conducted a retrospective study of multiple sclerosis patients with self-reported bowel incontinence and matched controls. Lesions were manually outlined on T2-weighted MRI scans and transformed into stereotaxic space. We performed a voxel-wise subtraction analysis subtracting the lesion overlap of patients without from patients with bowel incontinence. Finally, we compared the absence or presence of bowel incontinence between patients with and without lesions in a given voxel using the Liebermeister test. A total of 51 patients were included in the study. The analysis yielded associations between bowel incontinence and lesions in the supramarginal gyrus of the left secondary somatosensory cortex and another lesion cluster in the right parahippocampal gyrus and amygdala. Our analysis indicates associations between bowel incontinence and lesions in the left supramarginal gyral area contributing to integrating anorectal-visceral sensation and in the right parahippocampal gyrus and amygdala contributing to generating visceral autonomic arousal states. Moreover, our results suggest left hemispheric dominance of sensory visceral integration, while limbic areas of the right hemisphere seem to contribute to the autonomic component of the defecation process. A limitation of our study is the retrospective evaluation of the bowel incontinence status based on medical records. Further research should evaluate the bowel incontinence status in multiple sclerosis patients prospectively to overcome the limitations of the current study.

Neurological and psychological status of multiple sclerosis patients after a year in program of personalized psychological interventions

Madin-Darby canine kidney (MDCK) II cells stably transfected with transport proteins are commonly used models for drug transport studies. However, endogenous expression of especially canine MDR1 (cMDR1) confounds the interpretation of such studies. Here we have established an MDCK cell line stably overexpressing the human MDR1 transporter (hMDR1; P-glycoprotein), and used CRISPR-Cas9 gene editing to knockout the endogenous cMDR1. Genomic screening revealed the generation of a clonal cell line homozygous for a 4-nucleotide deletion in the canine ABCB1 gene leading to a frameshift and a premature stop codon. Knockout of cMDR1 expression was verified by quantitative protein analysis and functional studies showing retained activity of the human MDR1 transporter. Application of this cell line allowed unbiased reclassification of drugs previously defined as both substrates and non-substrates in different studies using commonly used MDCK-MDR1 clones. Our new MDCK-hMDR1 cell line, together with a previously developed control cell line, both with identical deletions in the canine ABCB1 gene and lack of cMDR1 expression represent excellent in vitro tools for use in drug discovery.