La alteración de la mielina en la enfermedad de Alexander

Introduction

Alexander disease (AxD) is a type of leukodystrophy. Its pathological basis, along with myelin loss, is the appearance of Rosenthal bodies, which are cytoplasmic inclusions in astrocytes. Mutations in the gene coding for GFAP have been identified as a genetic basis for AxD. However, the mechanism by which these variants produce the disease is not understood.

Uso de la polipíldora cardiovascular en la prevención secundaria de la enfermedad cerebrovascular

IntroductionThere is little control of cardiovascular (CV) risk factors in secondary prevention after an ischaemic stroke, in part due to a lack of adherence to treatment. The CV polypill may contribute to proper treatment adherence, which is necessary for CV disease prevention. This study aimed to establish how and in what cases the CV polypill should be administered.MethodsA group of 8 neurologists drafted consensus recommendations using structured brainstorming and based on their experience and a literature review.ResultsThese recommendations are based on the opinion of the participating experts. The use of the CV polypill is beneficial for patients, healthcare professionals, and the health system. Its use is most appropriate for atherothrombotic stroke, lacunar stroke, stroke associated with cognitive impairment, cryptogenic stroke with CV risk factors, and silent cerebrovascular disease. It is the preferred treatment in cases of suspected poor adherence, polymedicated patients, elderly people, patients with polyvascular disease or severe atherothrombosis, young patients in active work, and patients who express a preference for the CV polypill. Administration options include switching from individual drugs to the CV polypill, starting treatment with the CV polypill in the acute phase in particular cases, use in patients receiving another statin or an angiotensin ii receptor antagonist, or de novo use if there is suspicion of poor adherence. Nevertheless, use of the CV polypill requires follow-up on the achievement of the therapeutic objectives to make dose adjustments.ConclusionsThis document is the first to establish recommendations for the use of the CV polypill in cerebrovascular disease, beyond its advantages in terms of treatment adherence.     

Influencia de la estimulación cerebral profunda en la carga de cuidadores de pacientes con enfermedad de Parkinson

Introduction

Our aim is to assess the burden on caregivers of patients with Parkinson's disease treated with deep brain stimulation (DBS) compared to those caring for patients at advanced stages and undergoing other treatments. We have also assessed the variables associated with presence of caregiver overload.

Psychotraumatologie de la guerre en Ukraine : la question de la prise en charge psychologique des victimes réfugiées ou restées en Ukraine

The war in Ukraine is a major poly-traumatic event, which leads to massive population displacements. The question of the evaluation and psychological care of psychotraumatised people is an urgent matter. As many countries hosting refugees are well endowed with a number of psychologists, some of these interested professionals should mobilise themselves and make themselves known to carry out these clinical acts. Priority should be given to trained and experienced psychologists to support victims. The language barrier will have to be overcome. Initially, it would be desirable to make contact or get closer to local and national refugee centres to facilitate these operations. Face-to-face or remote consultations, as developed during the Covid-19 pandemic, are possible. Reinforcements of available and dedicated psychologists, including remotely, from the countries hosting the most refugees are also desirable. The issue of detection, assessment and care of psychologically traumatised people who remained in the Ukrainian territory is probably even more massive. Whether non-combatants or combatants, part of the international psychological community should mobilise, in addition to local colleagues, to provide them with this psychological help. These humanitarian actions would be feasible depending on the evolution of the conflict. Whether it is psychological support for refugees or people still on the Ukrainian soil, models for organizing and coordinating these actions must be carefully thought out and implemented in an evolving way to optimise their effectiveness.     

Efecto de la exposición a bajas dosis de ozono en la expresión de la interleucina 17A durante el proceso de neurodegeneración progresiva en el hipocampo de ratas

IntroductionChronic exposure to low doses of ozone causes oxidative stress and loss of regulation of the inflammatory response, leading to progressive neurodegeneration.ObjectiveWe studied the effect of chronic exposure to low doses of ozone on IL-17A concentration and expression in neurons, microglia, astrocytes, and T cells in the rat hippocampus.MethodsWe used 72 Wistar rats, divided into 6 groups (n = 12): a control group (no ozone exposure) and 5 groups exposed to ozone (0.25 ppm, 4 h daily) for 7, 15, 30, 60, and 90 days. We processed 6 rats from each group to quantify IL-17A by ELISA; the remaining 6 were processed for immunohistochemistry (against IL-17A and GFAP, Iba1, NeuN, and CD3).ResultsThe ELISA study data showed a significant increase in IL-17A concentrations in the 7-, 15-, 30-, and 60-day exposure groups, with regard to the control group (P < .05). Furthermore, they indicate that hippocampal neurons were the cells showing greatest immunoreactivity against IL-17A between 60 and 90 days of exposure to ozone; we also observed an increase in activated astrocytes in the 30- and 60-day exposure groups.ConclusionExposure to ozone in rats induces an increase in IL-17A expression, mainly in hippocampal neurons, accompanied by hippocampal astrocyte activation during chronic neurodegeneration, similar to that observed in Alzheimer disease in humans.     

Variabilidad en la exploración motora de la enfermedad de Parkinson entre el neurólogo experto en trastornos del movimiento y la enfermera especializada

Introduction and objectiveIn clinical practice, assessing patients with Parkinson's disease (PD) is a complex, time-consuming task. Our purpose is to provide a rigorous and objective evaluation of how motor function in PD patients is assessed by neurologists specialising in movement disorders, on the one hand, and by nurses specialising in PD management, on the other.MethodsWe conducted an observational, cross-sectional, single-centre study of 50 patients with PD (52% men; mean age: 64.7  ±  8.7 years) who were assessed between 5 January 2016 and 20 July 2016. A neurologist and a nurse evaluated motor function in the early morning hours using the Unified Parkinson's Disease Rating Scale (UPDRS) parts III and IV and Hoehn & Yahr (H&Y) scale. Tests were administered in the same PD periods (in 48 patients during the ‘off’ time and in 2 patients during the ‘on’ time). Inter-rater variability was estimated with the intraclass correlation coefficient (ICC).ResultsForty-nine patients (98%) were classified in the same H&Y stage by both raters. Assessment times were similar for both raters. ICC for UPDRS-IV and UPDRS-III total scores were 0.955 (P<.0001) and 0.954 (P<.0001), respectively. The greatest variability was found for UPDRS-III item 29 (gait; ICC = 0.746; P<.0001) and the lowest, for item 30 (postural stability; ICC = 0.918; P<.0001).ConclusionsMotor function assessment of PD patients by a trained nurse is equivalent to that made by an expert neurologist and takes the same time to complete.     

Efectividad y seguridad de la cirugía para la epilepsia en niños. Experiencia de un hospital terciario en Ecuador

IntroductionThere is sufficient evidence on the usefulness of surgery as a therapeutic alternative for patients with drug-resistant epilepsy; however this treatment is underutilized, especially in developing countries.MethodsWe describe the outcomes of epilepsy surgery in 27 paediatric patients at Hospital Baca Ortiz in Quito, Ecuador. Our analysis considered the following variables: reduction in seizure frequency, surgery outcome according to the Engel classification, improvement in quality of life, and serious complications due to surgery.Results21 corpus callosotomies and 6 resective surgeries were performed. The mean seizure frequency decreased from 465 per month before surgery to 37.2 per month thereafter (p<.001); quality of life scale scores increased from 12.6 to 37.2 (p<.001), and quality of life improved in 72.7% of patients. Regarding resective surgery, 2 patients with temporal lobe epilepsy and one with posterior quadrant epilepsy achieved Engel class IA, and one patient undergoing hemispherotomy due to Rasmussen encephalitis achieved Engel class IIA. Two patients underwent surgery for hypothalamic hamartoma: one achieved Engel III and the other, Engel IA; however, the latter patient died in the medium term due to a postoperative complication. The other major complication was a case of hydrocephalus, which led to the death of a patient with refractory infantile spasms who underwent corpus callosotomy.ConclusionsFavourable outcomes were observed in 92.5% of patients.     

Efficacité de la médecine thermale en psychiatrie

Objectives

Relatively little known in psychiatry, spa psychiatric medicine is an original approach, which has started to form the subject of thorough assessments. It concerns 3 week spa therapy stays in practice, the patient being totally free and self-sufficient, though having to go to 3 to 4 prescribed daily bathing sessions and to the medical and psychotherapy follow-up provided within the scope of their medical care. Since the beginning of the years 2000, Spa Medicine has been subject to studies that have better shown the outline and its potential application areas. We present you here, through a review of the literature from these past 30 years, the main elements of scientific proof of its therapeutic activity and as a result, its best documented indications in psychiatry. Therefore, the article is stated by chapter, indication by indication.

Evaluación de la incidencia y tendencia de la enfermedad cerebrovascular en la región sanitaria de Lleida (España) en el periodo 2010-2014

ObjectivesThis study aimed to determine the incidence and trends of cerebrovascular disease (CVD) in the healthcare district of Lleida.Material and methodsWe performed a population-based prospective cohort study including the entire population of the healthcare district of Lleida (440 000 people). Information was gathered from the minimum basic data set from the emergency department and hospital discharges for the period from January 2010 to December 2014. All types of stroke were included. We evaluated crude and age-standardised rates using the world population as a reference. Patients without neuroimaging confirmation of the diagnosis were excluded.ResultsWe identified 4397 patients: 1617 (36.8%) were aged 80 years or over; 3969 (90.3%) presented ischaemic stroke, and 1741 (39.6%) were women. The crude incidence rate ranged from 192 (95% confidence interval [CI], 179-205) to 211 (95% CI, 197-224) cases per 100 000 population, in 2012 and 2013, respectively. Age-standardised rates ranged from 93 (95% CI, 86-100) to 104 (95% CI, 96-111) cases per 100 000 population, in 2012 and 2013, respectively. For all years, incidence rates increased with age, and were significantly higher among men than among women.ConclusionThe impact of CVD in Lleida is comparable to that observed in other European regions. However, population ageing induces a high crude incidence rate, which remained stable over the five-year study period.     

Epilepsia en el anciano: ¿la edad de inicio marca la diferencia?

IntroductionEpilepsy is most frequent in children and elderly people. Today's population is ageing and epilepsy prevalence is increasing. The type of epilepsy and its management change with age.MethodsWe performed a retrospective, observational study comparing patients aged ≥ 65 years with epilepsy diagnosed before and after the age of 65, and describing epilepsy characteristics and comorbidities in each group.ResultsThe sample included 123 patients, of whom 61 were diagnosed at < 65 years of age (group A), 62 at ≥ 65 of age (group B). Sex distribution was similar in both groups, with 39 men (62.9%) in group A and 37 (60.7%) in group B. Mean age was 69.97 ± 5.6 years in group A and 77.29 ± 6.73 in group B. The most common aetiology was unknown in group A (44.3%, n = 27) and vascular in group B (74.2%, n = 46). History of stroke was present in 12 patients from group A (19.7%) and 32 (51.6%) in group B. Antiepileptic drugs were prescribed at lower doses in group A. Statistically significant differences were found between groups for history of ischaemic stroke, cognitive impairment, psychiatric disorders, and diabetes mellitus; degree of dependence; and number of antiepileptic drugs.ConclusionAge of onset ≥ 65 years is closely related to cardiovascular risk factors; these patients require fewer antiepileptic drugs and respond to lower doses. Some cases initially present as status epilepticus.     

¿Existen diferencias en el manejo neuroquirúrgico de las lesiones intracraneales en la paciente gestante? Resultados de nuestra experiencia y revisión de la literatura

ObjectiveThe main objective of our work is to revise our neurosurgical experience in pregnant patient and to carry out a revision of the related literature in order to optimize the neurosurgical handling of these kind of patients.MethodRetrospective study between august 1993 and June 2010. We included patients who were pregnant at the time and who presented any trace of cranial neurosurgical or spinal disease.ResultsThe research includes the cases of 12 patients aged between 17 and 37 years old with an average age of 28.8 years old. The average gestation period was of 24.17 weeks, finding 50% of the patients within their third three-month period of pregnancy at the moment of diagnosis, 25% in their second three-month period and the remaining 25% in their first three-month period. The mean follow-up duration for this series was 84 months. 4 of them presented brain vascular lesions, 5 presented brain tumor lesions, 1 of them presented Chiari malformation, one lumbar disc herniation and 1 patient suffered from traumatic intracraneal hemorrhage. 8 of the 12 patients were subjected to neurosurgical procedures under general anesthetic, 2 for aneurysm embolizations and 2 for conservative treatments. Between the neurosurgical procedures 6 craniotomies were done, of wich 4 were to resection of the tumor and 2 for aneurysm clippings. There were done a transesfenoidal approach and a lumbar microdiscectomy. 2 of the 6 patients given craniotomies required external ventricular drainage before the operation. 5 elective cesareans were done in the group of patients given the craniotomies whilst of the rest the pregnancy was allowed to bring to term for reasons of pulmonary maturity. In our patients there were no cases of therapeutic abortion. There was found no morbidity no mortality neither in the mother nor in the fetus related to surgery.ConclusionsIn our experience with pregnant patients who suffered from neurosurgical lesion and in the experience we got from the revision of the related literature, the surgery of intracranial lesions is well tolerated by the mothers and the fetus. It must though be considered, the possibility of labor through cesarean depending on the fetus’ lung maturity.     

Papel de la microbiota intestinal en el desarrollo de diferentes enfermedades neurológicas

IntroductionIn recent years, the scientific evidence supporting a relationship between the microbiota and various diseases has increased significantly; this trend has also been observed for neurological diseases. This has given rise to the concept of the gut-brain axis and the idea of a relationship between the gut microbiota and several neurological diseases whose aetiopathogenesis is yet to be clearly defined.DevelopmentWe review the role of the gut microbiota in the gut-brain axis and analyse those neurological diseases in which alterations in the gut microbiota have been described as a result of human studies: specifically, Parkinson's disease, Alzheimer disease, amyotrophic lateral sclerosis, neuromyelitis optica, and multiple sclerosis.ConclusionsThe body of evidence linking the gut microbiota to various neurological diseases has grown considerably. Several interesting studies show a relationship between the gut microbiota and Parkinson's disease, Alzheimer disease, neuromyelitis optica, and multiple sclerosis, whereas other controversial studies implicate it in amyotrophic lateral sclerosis. Many of these studies place considerable emphasis on modulation of inflammation, particularly by bacteria capable of producing short-chain fatty acids.Despite these encouraging results, many questions remain, and there is a need to demonstrate causality, determine the role of fungi or viruses, and research possible treatment through diet, probiotics, or faecal microbiota transplantation.