Épidémiologie de la sclérose en plaques : la particularité française

Tumor necrosis factor (TNF) induces astrogliosis, microgliosis and promotes survival of cortical neurons

Objectives

Neuro-inflammation occurs as a sequence of brain injury and is associated with production of cytokines. Cytokines can modulate the function and survival of neurons, microglia and astrocytes. The objective of this study is to examine the effect of TNF on the neurons, microglia and astrocytes in normal brain and stab wound brain injury.

Methods

Normal BALB/c male mice (N) without any injury were subdivided into NA and NB groups. Another set mouse was subjected to stab wound brain injury (I) and were subdivided into IA and IB. NA and IA groups received intraperitoneal injections of TNF (1 µg/kg body weight/day) for nine days, whereas NB and IB groups received intraperitoneal injections of PBS. Animals were killed on 1^st, 2^nd, 3^rd, 7^th, and 9^th day. Frozen brain sections through the injury site in IA and IB or corresponding region in NA and NB groups were stained for neurodegeneration, immunostained for astrocytes, microglia and neurons. Western blotting for GFAP and ELISA for BDNF were done from the tissues collected from all groups.

Results

The number of degenerating neurons significantly decreased in TNF treated groups. There was a significant increase in the number of astrocytes and microglia in TNF treated groups compared to PBS treated groups. In addition, it was found that TNF stimulated the expression of GFAP and BDNF in NA and IA groups.

Conclusions

TNF induces astrogliosis and microgliosis in normal and injured brain and promotes the survival of cortical neurons in stab wound brain injury, may be by upregulating the BDNF level.

Retrospective evaluation of regional telemedicine team meetings for multiple sclerosis (MS) patients: Experience from the Caen MS expert center in Normandy, France

INTRODUCTION

Multiple sclerosis (MS) is a demyelinating disease requiring multidisciplinary care coordination. Recent development of diagnosis criteria and disease modifying treatments have encouraged the setup of regional team meetings by MS expert centers, known as CRC Sep, to improve the quality of care provided to patients with complex cases. The CRC Sep in Caen initiated regional telemedicine meetings named Télé-SEP, operating since 2016. The objective of this study was to evaluate the Télé-SEP used by neurologists, on MS patient care management in Normandy.

METHODS

An internal ex-itinere evaluation was conducted with a retrospective descriptive observational study from July 2016 to June 2018. The Télé-SEP meetings were organized with 41 neurologists using a regional telemedicine platform (Therap-e). Data were collected from online records and a declarative voluntary survey. Twenty indicators were classified in the categories: volume of activity, clinical profile, quality and impact.

RESULTS

Fifteen meetings were organized with a median of 13 senior neurologists. One hundred forty MS cases were discussed and there was a 33% increase in the second year of Télé-SEP. Median patient age was 44 years with a 72-month median length of disease. Most patient cases required second-line treatment. Relapsing remitting MS was diagnosed in 51.4% of cases. Télé-SEP satisfaction rate was 4.5/5 and 96% of neurologists applied the medical decisions and recommendations given in the meetings.

CONCLUSION

Without Télé-SEP, 54.5% of patients would have been referred to a physical expert consultation in the CRC Sep. This study showed the feasibility and relevance of regional telemedicine team meetings for MS cases in the Normandy region.

[Ejaculation disorders in multiple sclerosis: Prospective study of 44 patients]

INTRODUCTION

To analyze in a descriptive way the ejaculation disorders during MS and to study the correlations between dysejaculations, other sexual, urinary and anorectal disorders.

MATERIAL

Prospective, monocentric, non-interventional study. Ejaculation disorders were assessed by Premature Ejaculation Profile (PEP) scores, intravaginal latency, and the Male Sexual Health Questionnaire - Ejaculation (MSHQ-Ej). The sexual disorders were evaluated by the International Index of Erectile Function (IIEF15) and the Sclerosis Intimacy and Sexuality Questionnaire-19 (MSISQ).

RESULTS

Forty-four men of mean age 46.8 (±10.3) years, with an average EDSS of 5.0 (±1.5) were included. According to the MSHQ-Ej score, ejaculation disorders were present in 28 out of 44 patients included (64%); 26/44 (59%) had an orgasm disorder, 23/44 (52%) a delay in ejaculation, 26/44 (59%) a decrease in ejaculation flow, 24/44 (55%) decreased ejaculated volume, 18/44 (41%) decreased ejaculation frequency, 15/44 (33%) ejaculatory pain and 11 34 (25%) showed systematic non ejaculation. The PEP score showed premature ejaculation in 14 patients (32%). The intra-vaginal latency time was less than 1minute in 6 patients (13.6%). There was a statistically significant correlation between ejaculation disorders and erectile dysfunction (P<0.05, correlation coefficient at 0.53) but no statistically significant correlation between ejaculation disorders and urinary or ano-rectal disorders.

CONCLUSIONS

Dysejaculation was present in 64% of MS. These disorders were mainly characterized by a decrease in the volume of the ejaculation, the strength of ejaculation and the delay in ejaculation.

LEVEL OF EVIDENCE

4.

[Care pathway diversity of patients with multiple sclerosis between French regions]

BACKGROUND

The aim of this study is to analyze and to compare data from 2015, focusing on hospital care for patients with multiple sclerosis from three French regions with different characteristics in terms of prevalence, size and number of multiple sclerosis competencies and resource centers.

METHODS

All hospital admissions from the PMSI MCO 2015 database, with a principal or related diagnosis (PD-RD) of G35* ("multiple sclerosis") were extracted. We also extracted chemotherapy treatments administered in hospital, during admissions with a significant associated diagnosis (SAD) of G35*, if the PD or RD was coded Z512 ("non-tumor chemotherapy"). The analyzed regions corresponded to those of 2015, some of which have since merged.

RESULTS

There were 95,359 hospital admissions for multiple sclerosis in France in 2015 among a total cohort of 21,102 patients, resulting in a total cost of € 54.1m. Patients with MS were managed mainly in the ambulatory setting, which accounted for 88.5 % of all admissions. The Rhône-Alpes region represented 7.6 % of national admissions for MS, 9.6 % of patients, and 14 % of inpatient days, contributing 10.4 % of the national cost of MS care. 58.4 % of stays were managed by the two main multiple sclerosis centers. The Nord-Pas-de-Calais region represented 9.8 % of national admissions, 10 % of patients, 6.6 % of inpatient days, and 9.1 % of the national cost. 29.8 % of stays were managed by the main multiple sclerosis center. The Centre region represented 2.7 % of stays, 2.8 % of patients, 3.1 % of inpatient days, and 2.8 % of the national cost. 28.4 % of stays were managed by the main multiple sclerosis center.

CONCLUSION

This study highlights the diversity of multiple sclerosis hospital management and care between these three regions.

[Multiple sclerosis : trends and management]

Multiple sclerosis affects almost 100 000 people in France with a higher prevalence among women. It is the most common cause of non-traumatic disability in the young adult. Recent years have been marked by a better understanding of the physiopathology and risk factors, as well as by an increase in the number of available treatments.

Targeted clinical audits immediately following the establishment of clinical practice guidelines for multiple sclerosis in 17 neurology departments: A pragmatic and collaborative study

Following the publication practice guidelines for multiple sclerosis by a group of neurologists (multiple sclerosis study group [GRESEP]), the primary objective of this study was to compare the reality of practice to the guidelines according to the targeted clinical audit (TCA) method. The study was conducted at 17 neurology sites and was administered during two periods of MS care (diagnostic - TCA-DIAG, and disease course - TCA-EVOL). Two complementary surveys were done on the record keeping and the root causes of the deviations. The percentages of compliance ranged from 8 to 98% for the TCA-DIAG, and from 15 to 99% for the TCA-EVOL, with wide disparity between sites. The audits were able to identify causes of the flaws in traceability or accessibility. At the end of the study, despite its limitations, we think that the sharing of the results from different sites provided interesting approaches for the use of the assessment criteria defined by GRESEP in a complete audit cycle. This study is to our knowledge the first report of an experiment in which guidelines were created, and subsequently followed by the development of assessment criteria and then the performance of targeted clinical audits using them, all by the same participants.

CONTEXT

Clinical practice guidelines (CPGs) are intended to help practitioners and patients make informed treatment choices, but their integration into actual practice remains problematic. This study was done immediately following the publication of CPGs for multiple sclerosis (MS) by the multiple sclerosis study group [GRESEP]. The primary objective was to generate quality criteria, to test them within the same group, and to analyze the observed deviations.

MATERIALS AND METHODS

The study was conducted in the 17 voluntary departments that had participated in the development of the CPGs. The targeted clinical audit method was administered during two periods of MS care (diagnostic - TCA-DIAG, and disease course - TCA-EVOL). All the files were evaluated by a clinical research technician using digital format, which ensured thoroughness of the collection. Two complementary surveys were done on the record keeping and the potential causes of the deviations.

RESULTS

The percentages of compliance to the criteria ranged from 8 to 98% (out of 240 files) for the TCA-DIAG, and from 15 to 99% (221 files) for the TCA-EVOL, with wide disparity between sites (interquartile distance ranges: TCA-DIAG between 0% and 55%; TCA-EVOL between 0% and 70%). The mean percentage of compliance with all the criteria as measured by the TCA-DIAG was 83.9% for the sites with digital files vs. 76.4% for those with only paper files (P<0.01). For the TCA-EVOL, the difference was not significant. Explanations for the observed deviations were suggested (1 to 9 according to the participants).

DISCUSSION AND CONCLUSION

The quantified results could not be compared to other studies given the unique nature of the experiment. The importance of the traceability of practices in the patient files was discussed and assessed with regard to continuity and safety of care, as well as the medical-legal perspectives. Causes of lack of compliance were suggested (particularly the absence of reminders, the lack of means and/or time). Despite the limitations of the study, we think it is advisable that when a group becomes involved in the development of CPGs that they follow with the development of assessment criteria in order to evaluate the validity as well as their character as intermediate indicators of the quality of practices.

[Neuropsychiatric manifestations in multiple sclerosis (MS): Might psychotic symptoms signal the onset of the disease?]

Patients suffering from multiple sclerosis (MS) can often dysplay psychiatric symptoms throughout the disease. The frequency of those symptoms could be two or three times greater in MS patients compared to the general population. Psychotic symptoms could be an early sign of MS. At first, neurological symptoms can either be mild or altogether absent. MRI brain scans show cerebral lesions in frontal and temporal regions. New MRI sequencing techniques support the hypothesis that disseminated defects in the grey matter occur in MS. These defects could in turn be responsible for cognitive disorders. Patients presenting a first-episode psychosis must have a neurological examination. MS should be considered as an alternative diagnosis of psychosis, particularly in atypical cases where family history of psychosis is absent and where there is bad response to standard psychotropic treatment. Collaboration between neurologists and psychiatrists whilst caring for patients displaying neuropsychiatric manifestations of MS is crucial to enable more accurate diagnoses and try to improve treatment and overall prognosis.

Is hypovitaminosis D one of the environmental risk factors for multiple sclerosis?

The role of hypovitaminosis D as a possible risk factor for multiple sclerosis is reviewed. First, it is emphasized that hypovitaminosis D could be only one of the risk factors for multiple sclerosis and that numerous other environmental and genetic risk factors appear to interact and combine to trigger the disease. Secondly, the classical physiological notions about vitamin D have recently been challenged and the main new findings are summarized. This vitamin could have an important immunological role involving a number of organs and pathologies, including autoimmune diseases and multiple sclerosis. Furthermore, human requirements for this vitamin are much higher than previously thought, and in medium- or high-latitude countries, they might not be met in the majority of the general population due to a lack of sunshine and an increasingly urbanized lifestyle. Thereafter, the different types of studies that have helped to implicate hypovitaminosis D as a risk factor for multiple sclerosis are reviewed. In experimental autoimmune encephalomyelitis, vitamin D has been shown to play a significant immunological role. Diverse epidemiological studies suggest that a direct chain of causality exists in the general population between latitude, exposure to the sun, vitamin D status and the risk of multiple sclerosis. New epidemiological analyses from France support the existence of this chain of links. Recently reported immunological findings in patients with multiple sclerosis have consistently shown that vitamin D significantly influences regulatory T lymphocyte cells, whose role is well known in the pathogenesis of the disease. Lastly, in a number of studies on serum levels of vitamin D in multiple sclerosis, an insufficiency was observed in the great majority of patients, including at the earliest stages of the disease. The questionable specificity and significance of such results is detailed here. Based on a final global analysis of the cumulative significance of these different types of findings, it would appear likely that hypovitaminosis D is one of the risk factors for multiple sclerosis.