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1.
Eur J Neurol ; 25(2): 411-416, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29171146

RESUMO

BACKGROUND AND PURPOSE: OnabotulinumtoxinA is a treatment specifically approved for the prophylaxis of chronic migraine in adults. The aim of this study was to assess the effectiveness of OnabotulinumtoxinA in chronic migraine after 1 year of treatment in a real-life setting and to identify clinical predictors of outcome. METHODS: We designed a prospective multicentre study performed in 13 hospitals in Spain. Patients underwent a complete medical history and examination. They were treated with OnabotulinumtoxinA every 12 weeks for 1 year. Data about outcome, adverse events, abortive medication use, emergency room use and disability were collected at 3 and 12 months. RESULTS: A total of 725 subjects completed the study. At 12 months, 79.3% showed >50% reduction in number of headaches per month and 94.9% reported no adverse events. Unilaterality of pain, fewer days of disability per month and milder headache at baseline were correlated with good outcome. Duration of disease <12 months increased the chances of response to treatment with OnabotulinumtoxinA (odds ratio, 1.470; 95% confidence interval, 1.123-2.174; P = 0.045). CONCLUSIONS: This study confirmed the effectiveness of treatment with OnabotulinumtoxinA after 1 year of treatment. The chances of a good outcome may be increased by starting treatment in the first 12 months after chronic migraine diagnosis.


Assuntos
Toxinas Botulínicas Tipo A/farmacologia , Transtornos de Enxaqueca/tratamento farmacológico , Fármacos Neuromusculares/farmacologia , Avaliação de Resultados em Cuidados de Saúde , Adulto , Toxinas Botulínicas Tipo A/administração & dosagem , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fármacos Neuromusculares/administração & dosagem , Estudos Prospectivos
2.
Eur J Neurol ; 23(10): 1572-9, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27418418

RESUMO

BACKGROUND AND PURPOSE: Chronic periodontitis (ChP) and lacunar infarct (LI) are two common diseases amongst the elderly. Although several studies have shown an association between ischaemic stroke and ChP, little is known about the relationship between ChP and LI. The study aims to investigate whether ChP is associated with the presence of lacunar stroke. METHODS: An age- and gender-matched case-control study of 62 cases (subjects diagnosed with LI) and 60 controls is reported. Clinical periodontal measures (probing pocket depth, recession, clinical attachment level, full mouth plaque score and full mouth gingival bleeding on probing score) were assessed, and associated risk factors for periodontitis and lacunar stroke were ascertained by means of a structured questionnaire. RESULTS: Chronic periodontitis showed a strong association with LI after adjusting for common vascular risk factors (odds ratio 4.20; 95% confidence interval 1.81-10.20; P = 0.001). Likewise, severe ChP and LI also tended to be significantly associated, independent of other vascular covariates (odds ratio 3.53; 95% confidence interval 1.07-12.77; P = 0.04). CONCLUSIONS: Chronic periodontitis was independently associated with the presence of LI after adjusting for well-known vascular risk factors for lacunar stroke. Further observational studies are necessary to investigate the pathophysiological mechanisms that can explain this relationship.


Assuntos
Periodontite Crônica/epidemiologia , Acidente Vascular Cerebral Lacunar/epidemiologia , Idoso , Estudos de Casos e Controles , Periodontite Crônica/diagnóstico , Comorbidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Espanha/epidemiologia , Acidente Vascular Cerebral Lacunar/diagnóstico
4.
J Biosci ; 482023.
Artigo em Inglês | MEDLINE | ID: mdl-37671533

RESUMO

An important preventive measure to mitigate the COVID-19 pandemic is vaccine implementation. In creating vaccines, evoking neutralizing antibody (NAb) production is the main objective. This review determines and compares the NAb titers produced by COVID-19 vaccine recipients based on the vaccine type and the manner of administration. This review includes published articles on studies with healthy participants with a minimum age of 18 years, without previous infections, and those who were given Emergency Use License (EUL) vaccines from WHO. Bias assessment was performed using the Cochrane Risk of Bias and the Newcastle- Ottawa Scale. In all the studies, 40.82% of the primary doses were viral vector platforms. For booster doses, 50% were mRNA platforms. Messenger RNA (mRNA) vaccines have higher titers as homologous than as heterologous vaccines. However, inactivated vaccines and viral vector vaccines have lower titers as homologous than as heterologous vaccines. Meanwhile, subunit vaccines lack data for their titers. Based on the antibody titers, homologous mRNA vaccines are more viral-protective than their heterologous counterparts. Heterologous inactivated and viral vector vaccines are more protective than homologous combinations, mainly when mRNA is the other type in those heterologous combinations. This is because mRNA vaccines elicit higher immunogenicity compared to other types.


Assuntos
COVID-19 , Vacinas Virais , Humanos , Adolescente , Vacinas contra COVID-19 , Pandemias , RNA Mensageiro , Vacinas de mRNA
5.
Neurologia (Engl Ed) ; 37(5): 390-402, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35672126

RESUMO

INTRODUCTION: It has been observed in recent years that levels of such molecules as calcitonin gene-related peptide (CGRP) and, to a lesser extent, the pituitary adenylate cyclase-activating peptide are elevated during migraine attacks and in chronic migraine, both in the cerebrospinal fluid and in the serum. Pharmacological reduction of these proteins is clinically significant, with an improvement in patients' migraines. It therefore seems logical that one of the main lines of migraine research should be based on the role of CGRP in the pathophysiology of this entity. DEVELOPMENT: The Spanish Society of Neurology's Headache Study Group decided to draft this document in order to address the evidence on such important issues as the role of CGRP in the pathophysiology of migraine and the mechanism of action of monoclonal antibodies and gepants; and to critically analyse the results of different studies and the profile of patients eligible for treatment with monoclonal antibodies, and the impact in terms of pharmacoeconomics. CONCLUSIONS: The clinical development of gepants, which are CGRP antagonists, for the acute treatment of migraine attacks, and CGRP ligand and receptor monoclonal antibodies offer promising results for these patients.


Assuntos
Peptídeo Relacionado com Gene de Calcitonina , Transtornos de Enxaqueca , Anticorpos Monoclonais/uso terapêutico , Peptídeo Relacionado com Gene de Calcitonina/metabolismo , Antagonistas do Receptor do Peptídeo Relacionado ao Gene de Calcitonina/uso terapêutico , Cefaleia/tratamento farmacológico , Humanos , Transtornos de Enxaqueca/tratamento farmacológico
6.
Neurologia (Engl Ed) ; 36(3): 229-240, 2021 Apr.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-32917437

RESUMO

INTRODUCTION: Medication overuse headache is a secondary headache in which the regular or frequent use of analgesics can increase the frequency of the episodes, causing the transition from episodic to chronic headache. The prevalence of medication overuse headache is approximately 1-2%, with higher rates among women aged 30-50 years and with comorbid psychiatric disorders such as depression or anxiety, or other chronic pain disorders. It is important to be familiar with the management of this disease. To this end, the Spanish Society of Neurology's Headache Study Group has prepared a consensus document addressing this disorder. DEVELOPMENT: These guidelines were prepared by a group of neurologists specialising in headache after a systematic literature review and provides consensus recommendations on the proper management and treatment of medication overuse headache. The treatment of medication overuse headache is often complex, and is based on 4 fundamental pillars: education and information about the condition, preventive treatment, discontinuation of the drug being overused, and treatment for withdrawal symptoms. Follow-up of patients at risk of recurrence is important. CONCLUSIONS: We hope that this document will be useful in daily clinical practice and that it will update and improve understanding of medication overuse headache management.


Assuntos
Transtornos da Cefaleia Secundários , Analgésicos/efeitos adversos , Feminino , Cefaleia/tratamento farmacológico , Transtornos da Cefaleia/tratamento farmacológico , Transtornos da Cefaleia Secundários/epidemiologia , Humanos , Síndrome de Abstinência a Substâncias/tratamento farmacológico
7.
Rev Neurol ; 72(s02): S1-S19, 2021 06 30.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-34180043

RESUMO

INTRODUCTION: After the European Headache Federation (EHF) Congress, renowned Spanish neurologists specialised in migraine presented the most significant latest developments in research in this field at the Post-EHF Meeting. DEVELOPMENT: The main data presented concerning the treatment of chronic and episodic migraine were addressed, with attention paid more specifically to those related to preventive treatments and real-life experience in the management of the disease. An important review was carried out of the new therapeutic targets and the possibilities they offer in terms of understanding the pathophysiology of migraine and its treatment. An update was also presented of the latest developments in the treatment of migraine with fremanezumab, a monoclonal antibody recently authorised by the European Medicines Agency. Participants were also given an update on the latest developments in basic research on the pathology, as well as an overview of the symptoms of migraine and COVID-19. Finally, the repercussions of migraine in terms of its burden on the care and economic resources of the health system were addressed, along with its impact on society. CONCLUSIONS: The meeting summarised the content presented at the 14th EHF Congress, which took place in late June/early July 2020.


TITLE: I Reunión Post-European Headache Federation: revisión de las novedades presentadas en el Congreso de la European Headache Federation de 2020.Introducción. Tras la celebración del congreso de la European Headache Federation (EHF), reconocidos neurólogos españoles expertos en el tratamiento de la migraña expusieron en la Reunión Post-EHF las principales novedades presentadas en el congreso y relacionadas con ese ámbito. Desarrollo. Se abordan los principales datos presentados relacionados con el tratamiento de la migraña crónica y episódica; concretamente, los relacionados con los tratamientos preventivos y la experiencia en vida real en el manejo de la enfermedad. Se hizo una importante revisión de las nuevas dianas terapéuticas y las posibilidades que ofrecen en cuanto al conocimiento de la fisiopatología de la migraña y su tratamiento. Asimismo, se hizo una actualización de las novedades presentadas en el tratamiento de la migraña con fremanezumab, anticuerpo monoclonal recientemente autorizado por la Agencia Europea de Medicamentos. Se hizo una actualización de las novedades en investigación básica en la patología, así como una relación de los síntomas de migraña y COVID-19. Finalmente, se abordaron las implicaciones de la migraña en la carga sanitaria asistencial y económica, y su impacto en la sociedad. Conclusiones. En la reunión se hizo un resumen del contenido presentado en el 14 Congreso de la EHF, que tuvo lugar a finales de junio y principios de julio de 2020.


Assuntos
Transtornos de Enxaqueca/terapia , Anticorpos Monoclonais/uso terapêutico , Congressos como Assunto , Europa (Continente) , Humanos , Transtornos de Enxaqueca/tratamento farmacológico , Transtornos de Enxaqueca/etiologia , Guias de Prática Clínica como Assunto
8.
Am J Med Genet B Neuropsychiatr Genet ; 153B(1): 177-84, 2010 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-19455600

RESUMO

In order to evaluate the contribution of 19 serotonin-related genes to the susceptibility to migraine in a Spanish population we performed a case-control association study of 122 single nucleotide polymorphisms (SNPs), selected according to genetic coverage parameters, in 528 migraine patients -308 with migraine without aura (MO) and 220 with migraine with aura (MA)- and 528 sex-matched migraine-free controls. The single-marker analysis identified nominal associations with the migraine phenotype or with the MO or MA subtypes. The multiple-marker analysis revealed risk haplotypes in three genes that remained significantly associated with migraine after correction by permutations. Two-marker risk haplotypes were identified in the HTR2B (rs16827801T-rs10194776G) and MAOA (rs3027400G-rs2072743C) genes conferring susceptibility to MO, and a four-marker haplotype in DDC was specific of MA (rs2329340A-rs11974297C-rs2044859T-rs11761683G). The present study supports the involvement of HTR2B and MAOA genes in the genetic predisposition to MO, while DDC might confer susceptibility to MA. These results suggest a differential involvement of serotonin-related genes in the genetic background of MO and MA.


Assuntos
Estudo de Associação Genômica Ampla , Transtornos de Enxaqueca/genética , Receptor 5-HT2B de Serotonina/genética , Serotonina/genética , Estudos de Casos e Controles , Dopa Descarboxilase/genética , Epistasia Genética , Humanos , Monoaminoxidase/genética , Polimorfismo de Nucleotídeo Único , Espanha
9.
Neurologia (Engl Ed) ; 35(8): 568-578, 2020 Oct.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-29169811

RESUMO

INTRODUCTION: In the field of headaches, onabotulinumtoxinA (onabotA) is well established as a treatment for chronic migraine (CM). In recent years, it has been used increasingly to treat other primary headaches (high-frequency episodic migraine, trigeminal-autonomic cephalalgias, nummular headache) and trigeminal neuralgia. As this treatment will progressively be incorporated in the management of these patients, we consider it necessary to reflect, with a fundamentally practical approach, on the possible indications of onabotA, beyond CM, as well as its administration protocol, which will differ according to the type of headache and/or neuralgia. DEVELOPMENT: This consensus document was drafted based on a thorough review and analysis of the existing literature and our own clinical experience. The aim of the document is to serve as guidelines for professionals administering onabotA treatment. The first part will address onabotA's mechanism of action, and reasons for its use in other types of headache, from a physiopathological and clinical perspective. In the second part, we will review the available evidence and studies published in recent years. We will add an "expert recommendation" based on our own clinical experience, showing the best patient profile for this treatment and the most adequate dose and administration protocol. CONCLUSION: Treatment with onabotA should always be individualised and considered in selected patients who have not responded to conventional therapy.


Assuntos
Toxinas Botulínicas Tipo A/administração & dosagem , Toxinas Botulínicas Tipo A/farmacologia , Toxinas Botulínicas Tipo A/uso terapêutico , Cefaleia/tratamento farmacológico , Neuralgia do Trigêmeo/tratamento farmacológico , Ensaios Clínicos como Assunto , Diagnóstico Diferencial , Guias como Assunto , Cefaleia/diagnóstico , Humanos , Transtornos de Enxaqueca/tratamento farmacológico , Neuralgia do Trigêmeo/diagnóstico
10.
Psychol Med ; 39(7): 1201-9, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19356259

RESUMO

BACKGROUND: Depression is a frequent mood disorder that affects around 33% of stroke patients and has been associated with both poorer outcome and increased mortality. Our aim was to test the possible association between inflammatory and neurotrophic molecular markers and the development of post-stroke depression. METHOD: We studied 134 patients with a first episode of ischemic stroke without previous history of depression or speech disorders. We screened for the existence of major depression symptoms in accordance with DSM-IV criteria and a Yesavage Geriatric Depression Scale (GDS) score >11 at discharge and 1 month after stroke. At these times, serum levels of molecular markers of inflammation [interleukin (IL)-1beta, IL-6, intracellular adhesion molecule 1 (ICAM-1), tumor necrosis factor (TNF)-alpha, leptin and high-sensitivity C-reactive protein (hs-CRP)] and neurotrophic factors [brain-derived neurotrophic factor (BDNF)] were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS: Twenty-five patients (18.7%) were diagnosed as having major depression at discharge. Out of 104 patients who completed the follow-up period, 23 were depressed at 1 month (22.1%). Patients with major depression showed higher serum leptin levels at discharge [43.4 (23.4-60.2) v. 6.4 (3.7-16.8) ng/ml, p<0.001] and at 1 month after stroke [46.2 (34.0-117.7) v. 6.4 (3.4-12.2) ng/ml, p<0.001). Serum levels of leptin >20.7 ng/ml were independently associated with post-stroke depression [odds ratio (OR) 16.4, 95% confidence interval (CI) 5.2-51.5, p<0.0001]. Leptin levels were even higher in the eight patients who developed depression after discharge [114.6 (87.6-120.2) v. 7.2 (3.6-13.6) ng/ml, p<0.0001]. CONCLUSIONS: Serum leptin levels at discharge are found to be associated with post-stroke depression and may predict its development during the next month.


Assuntos
Infarto Cerebral/sangue , Infarto Cerebral/psicologia , Transtorno Depressivo Maior/sangue , Leptina/sangue , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Infarto Cerebral/diagnóstico , Transtorno Depressivo Maior/diagnóstico , Transtorno Depressivo Maior/psicologia , Feminino , Seguimentos , Humanos , Mediadores da Inflamação/sangue , Masculino , Pessoa de Meia-Idade , Razão de Chances , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos , Fatores de Risco , Estatística como Assunto , Tomografia Computadorizada por Raios X
11.
Eur J Neurol ; 16(6): 684-90, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19236459

RESUMO

BACKGROUND AND PURPOSE: Brachial arterial flow-mediated dilation (FMD) reflects endothelium-dependent vasodilation function. FMD is diminished in patients with endothelial dysfunction (ED). Our aim was to investigate the relationship between FMD and outcome for patients with acute ischemic stroke. METHODS: We measured FMD in 120 consecutive patients (58.3% male, median age 73 years) with acute ischemic stroke within the first 48 h of onset of the stroke, using high-resolution ultrasonography. FMD was calculated as the relationship between basal diameter of the brachial artery before (d(1)) and after (d(2)) transient vascular occlusion (300 mmHg for 4 min) was measured using a sphygmomanometer (FMD = d(2) - d(1)/d(1) x 100). Poor outcome was defined as modified Rankin Scale at 3 months >2. FMD was categorized according to ROC analysis and we defined ED as FMD < or = 4.5%. RESULTS: Thirty-three patients (27.5%) had ED. Median % FMD was 9.12 (7.48). FMD negatively correlated to stroke severity (P = 0.045). Median FMD was significantly lower [4.5 (2.3, 10.3) vs. 9.4 (5.6, 15.1), P = 0.003] for patients with poor outcome (n = 38). The adjusted odds ratio of poor outcome for FMD < or = 4.5% was 3.03 (95% CI, 1.09-27.3). CONCLUSIONS: Impaired FMD in patients with acute ischemic stroke is associated with poor outcome.


Assuntos
Artéria Braquial/diagnóstico por imagem , Artéria Braquial/fisiopatologia , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/fisiopatologia , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/fisiopatologia , Doença Aguda , Idoso , Pressão Sanguínea/fisiologia , Circulação Cerebrovascular , Células Endoteliais/fisiologia , Feminino , Humanos , Masculino , Avaliação de Resultados em Cuidados de Saúde/métodos , Valor Preditivo dos Testes , Prognóstico , Fluxo Sanguíneo Regional/fisiologia , Sensibilidade e Especificidade , Ultrassonografia , Vasodilatação/fisiologia
12.
Neurologia (Engl Ed) ; 34(6): 408-417, 2019.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-29169810

RESUMO

OnabotulinumtoxinA has been demonstrated to be effective as a preventive treatment in patients with chronic migraine (CM). Five years after the approval of onabotulinumtoxinA in Spain, the Headache Study Group of the Spanish Society of Neurology considered it worthwhile to gather a group of experts in treating patients with CM in order to draw up, based on current evidence and our own experience, a series of guidelines aimed at facilitating the use of the drug in daily clinical practice. For this purpose, we posed 12 questions that we ask ourselves as doctors, and which we are also asked by our patients. Each author responded to one question, and the document was then reviewed by everyone. We hope that this review will constitute a practical tool to help neurologists treating patients with CM.


Assuntos
Toxinas Botulínicas Tipo A/farmacologia , Toxinas Botulínicas Tipo A/uso terapêutico , Guias como Assunto/normas , Transtornos de Enxaqueca/tratamento farmacológico , Humanos , Neurologistas , Espanha
13.
Neurologia (Engl Ed) ; 2019 Jul 17.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-31326215

RESUMO

INTRODUCTION: It has been observed in recent years that levels of such molecules as calcitonin gene-related peptide (CGRP) and, to a lesser extent, the pituitary adenylate cyclase-activating peptide are elevated during migraine attacks and in chronic migraine, both in the cerebrospinal fluid and in the serum. Pharmacological reduction of these proteins is clinically significant, with an improvement in patients' migraines. It therefore seems logical that one of the main lines of migraine research should be based on the role of CGRP in the pathophysiology of this entity. DEVELOPMENT: The Spanish Society of Neurology's Headache Study Group decided to draft this document in order to address the evidence on such important issues as the role of CGRP in the pathophysiology of migraine and the mechanism of action of monoclonal antibodies and gepants; and to critically analyse the results of different studies and the profile of patients eligible for treatment with monoclonal antibodies, and the impact in terms of pharmacoeconomics. CONCLUSIONS: The clinical development of gepants, which are CGRP antagonists, for the acute treatment of migraine attacks, and CGRP ligand and receptor monoclonal antibodies offer promising results for these patients.

14.
Rev Neurol ; 61 Suppl 1: S9-S12, 2015.
Artigo em Espanhol | MEDLINE | ID: mdl-26337645

RESUMO

Headache is the most common reason for visiting in neurology. Almost a third of all patients surveyed in this specialty visit for this reason. The gradual increase in the complexity of the care afforded to patients with headaches requires neurologists to become more specialised and leads to the creation of specialised units where this more complex care can be implemented. The heads of the neurology department are responsible for structuring and coordinating the different care units. This article shows the findings of a survey carried out on a group of heads of neurology departments in order to determine the current state of headache units, that is, their opinion regarding the creation, functioning and development of headache units in Spanish hospitals, and the parameters of their efficacy and effectiveness.


TITLE: Creacion y potenciacion de las unidades de cefalea: vision de los neurologos y jefes de servicio de neurologia.La cefalea constituye el motivo de consulta mas frecuente en neurologia. Casi la tercera parte de pacientes consultados en esta especialidad lo hace por este motivo. El gradual incremento en la complejidad de asistencia a pacientes con cefalea hace necesaria una mayor especializacion por parte de los neurologos y propicia la creacion de unidades especializadas donde desarrollar esta actividad asistencial mas compleja. La estructuracion y coordinacion de las distintas unidades asistenciales corresponde a los jefes de servicio de neurologia. En este articulo se recogen los resultados de una encuesta realizado a un grupo de jefes de servicio de neurologia para conocer el estado actual de las unidades de cefalea: su opinion sobre la creacion, funcion y desarrollo de unidades de cefalea en los hospitales españoles, y los parametros de eficacia y eficiencia de estas.


Assuntos
Atitude do Pessoal de Saúde , Cefaleia/terapia , Necessidades e Demandas de Serviços de Saúde , Administradores Hospitalares/psicologia , Unidades Hospitalares , Neurologia/organização & administração , Médicos/psicologia , Inibidores da Liberação da Acetilcolina/uso terapêutico , Toxinas Botulínicas Tipo A/uso terapêutico , Terapia por Estimulação Elétrica , Cefaleia/tratamento farmacológico , Departamentos Hospitalares/organização & administração , Unidades Hospitalares/organização & administração , Unidades Hospitalares/provisão & distribuição , Humanos , Bloqueio Nervoso , Inquéritos e Questionários
15.
Stroke ; 32(5): 1154-61, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11340225

RESUMO

BACKGROUND AND PURPOSE: The mechanisms involved in the neurological deterioration of acute lacunar strokes are unknown. Although accumulating evidence suggests that glutamate release plays a role in the progression of territorial infarctions, it remains to be established whether excitotoxicity also participates in lacunar stroke progression. We investigated whether excitatory and inhibitory amino acid concentrations in blood predict subsequent progressive motor deficits in lacunar infarctions. METHODS: We studied 113 consecutive patients with lacunar infarct, defined by clinical and computed tomography/magnetic resonance imaging criteria, within the first 24 hours after stroke onset. Neurological deterioration was defined as a decrease of >/=1 points in the motor items of the Canadian Stroke Scale in the first 48 hours after admission. Glutamate, glycine, and GABA were determined by high-performance liquid chromatography in plasma samples obtained on admission. Predictive values, sensitivity, specificity, and accuracy of specific glutamate and GABA concentrations and glutamatexglycine/GABA index for progression of lacunar stroke were calculated. RESULTS: Twenty-seven patients (23.9%) had neurological worsening. Plasma concentrations of glutamate (253+/-70 versus 123+/-73 micromol/L, mean+/-SD) were higher and those of GABA (140+/-63 versus 411+/-97 nmol/L) were lower in the progressing group than in the nonprogressing group (both P<0.001). Glutamate concentrations >200 micromol/L and GABA levels <240 nmol/L had a positive predictive value for neurological deterioration of 67% and 84%, respectively. A excitotoxic index >106 had a positive predictive value of 85%. CONCLUSIONS: These findings suggest that an imbalance between the glutamate and GABA concentrations may play a role in the pathophysiology of progressing lacunar infarctions.


Assuntos
Infarto Encefálico/diagnóstico , Infarto Encefálico/fisiopatologia , Neurotransmissores/sangue , Doença Aguda , Idoso , Infarto Encefálico/sangue , Progressão da Doença , Feminino , Ácido Glutâmico/sangue , Glicina/sangue , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Ácido gama-Aminobutírico/sangue
16.
Neurology ; 58(4): 624-9, 2002 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-11865143

RESUMO

BACKGROUND: The mechanisms of cellular death in the tissue surrounding an intracerebral hemorrhage (ICH) are not defined. OBJECTIVE: To investigate the relationship of markers of excitotoxicity and inflammation to brain injury after ICH. METHODS: A total of 124 consecutive patients with spontaneous ICH admitted within 24 hours of stroke onset were prospectively investigated. The volumes of the initial ICH, peripheral edema on days 3 to 4, and the residual cavity at 3 months were measured on CT scan. Glutamate, cytokines, and adhesion molecules were measured in blood samples obtained on admission. Stroke severity and neurologic outcome were evaluated with the Canadian Stroke Scale. RESULTS: Poor neurologic outcome at 3 months (Canadian Stroke Scale < 7) was observed in 53 patients (43%). Stroke severity and glutamate concentrations (by each increment of 10 micromol/L, odds ratio 1.23; 95% CI 1.09 to 1.41), but not the initial volume of ICH, were independent predictors of poor outcome. In the multiple linear regression analyses, tumor necrosis factor-alpha concentration was correlated (r = 0.83, p < 0.0001) with the volume of perihematoma edema, and glutamate concentrations were correlated (r = 0.78, p < 0.0001) with the volume of the residual cavity. These same results were observed when lobar (n = 58) and deep (n = 66) ICH were analyzed separately. CONCLUSIONS: High plasma levels of proinflammatory molecules within 24 hours of intracerebral hemorrhage onset are correlated with the magnitude of the subsequent perihematoma brain edema, whereas poor neurologic outcome and the volume of the residual cavity are related to increased plasma glutamate concentrations.


Assuntos
Lesões Encefálicas/sangue , Hemorragia Cerebral/sangue , Idoso , Biomarcadores , Lesões Encefálicas/etiologia , Lesões Encefálicas/patologia , Hemorragia Cerebral/complicações , Hemorragia Cerebral/patologia , Estudos de Coortes , Citocinas/sangue , Feminino , Ácido Glutâmico/sangue , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estudos Prospectivos , Estatísticas não Paramétricas
17.
Rev Neurol ; 24(129): 534-8, 1996 May.
Artigo em Espanhol | MEDLINE | ID: mdl-8681169

RESUMO

Some foods in our diet can spark off migraine attacks in susceptible individuals. Some foods can bring an attack on through an allergic reaction. A certain number such as citrus fruits, tea, coffee, pork, chocolate, milk, nuts, vegetables and cola drinks have been cited as possible allergens associated with migraine. This mechanism has however been criticized: an improvement in symptoms by eliminating some food(s) from our diet does not necessarily mean an immunologically based allergic reaction. The high IgE incidence rate is not greater in such patients than in the population at large. Other allergic reactions unrelated to diet may also be associated with migraine attacks. On the other hand substances in food may be the cause of modifications in vascular tone and bring migraine on in those so prone. Among such substances are tyramine, phenylalanine, phenolic flavonoids, alcohol, food additives (sodium nitrate, monosodium glutamate, aspartame) and caffeine. Another recognized trigger for migraine is hypoglycemia. Such foods as chocolate, cheese, citrus fruits, bananas, nuts, 'cured' meats, dairy products, cereals, beans, hot dogs, pizza, food additives (sodium nitrate, monosodium glutamate in Chinese restaurant food, aspartame as a sweetener), coffee, tea, cola drinks, alcoholic drinks such as red wine, beer or whisky distilled in copper stills, all may bring on a migraine attack. For every patient we have to assess which foodstuffs are involved in the attack (not necessarily produced by consuming the product concerned) in order to try to avoid their consumptions as a means of prophylaxis for migraine.


Assuntos
Dieta/efeitos adversos , Hipersensibilidade Alimentar/complicações , Transtornos de Enxaqueca/etiologia , Etanol/efeitos adversos , Aditivos Alimentares/efeitos adversos , Humanos , Fenetilaminas/efeitos adversos , Fenetilaminas/metabolismo , Tiramina/efeitos adversos , Tiramina/metabolismo
18.
Rev Neurol ; 23(122): 737-40, 1995.
Artigo em Espanhol | MEDLINE | ID: mdl-7497229

RESUMO

The frequency and clinical characteristics of headache were assessed in a prospective study carried out among 100 patients suffering from ischaemic infarct in the area of the middle cerebral artery. Headache was found in 28 out of the 100 patients studied and proved to be significantly more frequent in those infarcts located in the superficial branches (p < 0.001) and in the dominant hemisphere (p < 0.05). We found no relationship between the existence of headache and the type of infarct, its extension or level of neurological affectation. Severe headache preceded stroke in 28.5% of cases, was simultaneous in 57.1% and followed in 14.2%. The average intensity of headache was 2.14 +/- 1.69 headache units. It was bilateral in 46.4% of patients, generalized in 14.2%, unilateral on the side of the infarct in 28.5% and counterlateral in the remaining 10.7%.


Assuntos
Isquemia Encefálica/complicações , Isquemia Encefálica/fisiopatologia , Artérias Cerebrais/fisiopatologia , Transtornos de Enxaqueca/etiologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Índice de Gravidade de Doença
19.
Rev Neurol ; 23(122): 752-5, 1995.
Artigo em Espanhol | MEDLINE | ID: mdl-7497233

RESUMO

We present the results of treatment with subcutaneous sumatriptan in migraine attacks. The study comprised forty-two patients suffering from migraine both with and without aura, with migraine attacks not susceptible to analgesics, non-steroid anti-inflammatory drugs (NSAID), ergotics or else intolerance to the same. Two groups were independently analyzed, one consisting of ten patients who had menstrual migraine continually for twelve months, the other consisting of thirty-two patients suffering from migraine with and without aura for six months. We assessed the effectiveness of the drug (reduction in the intensity and duration of the attack, action, speed, recurrence) and tolerance (adverse effects). The effectiveness of sumatriptan in relieving headache was 75.9% (80% in the case of the menstrual migraine group and 71.8% in the case of the migraine with and without aura group). This effectiveness was maintained in a similar fashion by analyzing independently the first and last months of treatment. Adverse effects were noted in 38.7% of patients treated (40% for the menstrual migraine group, 37.5% for those with migraine with and without aura). The most frequent effects were pain at the point of injection, a feeling of general tiredness, nausea and a sensation of tension in the neck or chest. These effects were largely slight and short lived. No serious adverse effects were reported. A long term analysis carried out on the menstrual migraine group shows the efficacy of sumatriptan is kept up, with improved tolerance of the drug and a decrease in the number of negative side effects noted.(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Tolerância a Medicamentos , Injeções Subcutâneas , Transtornos de Enxaqueca/tratamento farmacológico , Agonistas do Receptor de Serotonina/administração & dosagem , Agonistas do Receptor de Serotonina/uso terapêutico , Sumatriptana/administração & dosagem , Sumatriptana/uso terapêutico , Adulto , Feminino , Humanos , Masculino , Sumatriptana/efeitos adversos , Resultado do Tratamento
20.
Rev Neurol ; 24(126): 183-6, 1996 Feb.
Artigo em Espanhol | MEDLINE | ID: mdl-8714485

RESUMO

The connection between migraine and brain haemorrhage is controversial. We present the case of eight nonhypertense patients all aged under 57 with migraine antecedents who suffered brain haemorrhage during an attack. All underwent analytical study, chest X-ray, electrocardiography, computerized tomography scan and brain panangiography. The study was completed in six cases with an immunological analysis and in a further five with brain magnetic resonance. Seven patients habitually took vasoactive drugs to relieve migraine. The results do not show any other cause of brain haemorrhage. It is possible haemorrhage may be related to vascular lesion brought about by ischaemia secondary to vasospasms.


Assuntos
Hemorragia Cerebral/complicações , Hemorragia Cerebral/diagnóstico , Lobo Frontal/fisiopatologia , Transtornos de Enxaqueca/etiologia , Lobo Occipital/fisiopatologia , Lobo Parietal/fisiopatologia , Adolescente , Adulto , Angiografia Cerebral , Hemorragia Cerebral/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X
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