RESUMO
BACKGROUND: In order to reduce the risk of progressive multifocal leucoencephalopathy when using natalizumab for more than 12 months, a 6-month drug holiday has been discussed. However, the consequences on short term disease activity have been poorly assessed. OBJECTIVE: The aim of this study was to assess clinical and radiological disease activity within 6 months after stopping natalizumab in very active relapsing remitting Multiple Sclerosis (RRMS) patients. METHODS: In 8 hospitals from Western France, we retrospectively collected clinical and MRI data from consecutive RRMS patients treated with natalizumab for at least 6 months, and who stopped the drug for various reasons except therapeutic failure. Patients didn't receive any other disease modifying treatment after discontinuing natalizumab. RESULTS: A total of 27 patients with very active RRMS before natalizumab start (mean annualized relapse rate of 2.3, MRI activity in 21 of 27 patients) were studied. Within 6 months after discontinuing natalizumab, 18 patients (67%) experienced clinical relapse and 3 additional patients had radiological activity, without clinical relapse. Four patients (15%) experienced a rebound activity, with severe relapse and 20 or more gadolinium enhancing lesions on MRI. CONCLUSION: Such observational data didn't support the concept of drug holiday when using natalizumab in very active RRMS.
Assuntos
Anticorpos Monoclonais Humanizados/administração & dosagem , Esclerose Múltipla Recidivante-Remitente/tratamento farmacológico , Atividades Cotidianas , Adulto , Esquema de Medicação , Feminino , França/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Esclerose Múltipla Recidivante-Remitente/epidemiologia , Esclerose Múltipla Recidivante-Remitente/fisiopatologia , Natalizumab , Estudos Retrospectivos , Prevenção Secundária , Fatores de Tempo , Adulto JovemAssuntos
Capnocytophaga , Infecções por Bactérias Gram-Negativas/diagnóstico , Meningites Bacterianas/diagnóstico , Amoxicilina/administração & dosagem , Amoxicilina/uso terapêutico , Antibacterianos/uso terapêutico , Surdez/etiologia , Infecções por Bactérias Gram-Negativas/tratamento farmacológico , Humanos , Infusões Intravenosas , Masculino , Meningites Bacterianas/tratamento farmacológico , Pessoa de Meia-IdadeRESUMO
Anticancer drugs rarely cause strokes. We report the case of a woman treated for a kidney cancer by IL2 and IFN alpha, having developed multiple strokes associated with a livedo. The responsibility of IL2 and IFN alpha seemed likely. The association with a transitory livedo suggested that the pathological process might be a cerebral angiopathy with arterial vasospasms.
Assuntos
Antineoplásicos/efeitos adversos , Infarto Cerebral/induzido quimicamente , Interferon-alfa/efeitos adversos , Interleucina-2/efeitos adversos , Síndrome de Sneddon/induzido quimicamente , Adenocarcinoma/tratamento farmacológico , Encéfalo/patologia , Infarto Cerebral/complicações , Infarto Cerebral/diagnóstico , Feminino , Humanos , Neoplasias Renais/tratamento farmacológico , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Síndrome de Sneddon/complicaçõesRESUMO
A case of global and persistent amnesia due to a right polar and anterior thalamic infarction is reported. There was a moderate impairment of attention and categorization ability. The amnesia was primarily anterograde, with partial disturbance of short-term memory and severe deficit of long-term memory for verbal and visuo-spatial materials. A severe increase of pro-active interference was present. Retrograde memory was mildly affected. Two years later, a second infarction in the right thalamo-sub-thalamic territory occurred, increasing the deficits of attention, short-term memory and recall.
Assuntos
Amnésia/etiologia , Infarto Cerebral/complicações , Doenças Talâmicas/complicações , Adulto , Amnésia/diagnóstico , Infarto Cerebral/diagnóstico , Humanos , Imageamento por Ressonância Magnética , Masculino , Testes Neuropsicológicos , Síndrome , Doenças Talâmicas/diagnósticoRESUMO
The functional and social outcome in 15 patients with brainstem hematomas surviving on the 15th day is reported. At the end of the first year post stroke, the main neurological deficits were sensory, postural and paresis of the 6th and 7th cranial nerves. This resulted from the preferential location of the lesions in the lateral and posterior pons. On a functional point of view, 8 patients were independent in daily living. Seven of them were regularly engaged in more elaborated activities, at home and outside: 1 had recovered his previous professional activities. Those functions evolved more slowly during the 2nd year and later on. A significant correlation was found between the initial neurological status and the functional outcome at 1 year, and also between the volume of the hematoma on C.T. scan and this outcome. In this series, the age of the patients was not correlated to the other variables.
Assuntos
Tronco Encefálico , Hemorragia Cerebral/complicações , Hematoma/complicações , Doenças do Sistema Nervoso/etiologia , Atividades Cotidianas , Adulto , Idoso , Nível de Alerta , Coma/etiologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Índice de Gravidade de DoençaRESUMO
Cerebral blood flow (C.B.F.) measurements with continuous xenon 133 inhalation and single photon emission tomography were performed in 11 patients with uni- or bilateral thalamic infarctions. Anterior infarction was associated with changes in parietal and anterior frontal C.B.F., thalamo-subthalamic infarctions with a more diffuse and definite reduction of C.B.F., thalamo-geniculate and superior juxta-thalamic lesions to a reduction of temporal and parietal C.B.F. A relative anatomo-functional concordance was found between the localization of the infarction and the cortical and deep situation of the C.B.F. reduction. Relations between the site of this reduction and the quality and degree of neuropsychological involvement were less clear. A verbal activation was realized in a patient with thalamo-subthalamic infarction which failed to evoke the C.B.F. elevation observed in normal subjects.
Assuntos
Infarto Cerebral/fisiopatologia , Circulação Cerebrovascular , Testes Neuropsicológicos , Doenças Talâmicas/fisiopatologia , Adulto , Idoso , Infarto Cerebral/diagnóstico por imagem , Infarto Cerebral/patologia , Infarto Cerebral/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Talâmicas/diagnóstico por imagem , Doenças Talâmicas/patologia , Doenças Talâmicas/psicologia , Tomografia Computadorizada de Emissão , Radioisótopos de XenônioRESUMO
A new radiotracer of cerebral perfusion, 99mTc-labelled hexamethylpropylene amine-oxime, has been tried in 78 subjects: 6 controls and 72 patients. Qualitatively, the distribution of this tracer in healthy subjects was very much the same as that obtained with a reference method using 133xenon inhalation. Quantitatively, there was no correlation between the real blood flow rate and the normalized cerebral uptake rate. On the other hand, the asymmetry indices obtained in controls (but also in 16 patients) correlated very closely with those obtained with 133xenon. Our first results in acute ischaemic diseases as well as in the evaluation of vasospasm or Alzheimer-like presenile dementia point to wide fields of application for the new compound. Unlike its predecessors, it is always available and will probably be used, without any logistic investment, with the standard equipment of all Nuclear medicine departments.
Assuntos
Transtornos Cerebrovasculares/diagnóstico por imagem , Compostos Organometálicos , Oximas , Tomografia Computadorizada de Emissão , Adulto , Idoso , Idoso de 80 Anos ou mais , Doença de Alzheimer/diagnóstico por imagem , Isquemia Encefálica/diagnóstico por imagem , Hemorragia Cerebral/diagnóstico por imagem , Circulação Cerebrovascular , Feminino , Hematoma/diagnóstico por imagem , Humanos , Ataque Isquêmico Transitório/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Tecnécio Tc 99m ExametazimaAssuntos
Isquemia Encefálica/diagnóstico por imagem , Circulação Cerebrovascular , Compostos Organometálicos/administração & dosagem , Compostos de Organotecnécio/administração & dosagem , Oximas/administração & dosagem , Radioisótopos de Xenônio , Administração por Inalação , Adulto , Feminino , Humanos , Masculino , Cintilografia , Tecnécio Tc 99m Exametazima , Tomografia Computadorizada por Raios X , Radioisótopos de Xenônio/administração & dosagemRESUMO
The authors report their experience in the treatment of 15 cases in thoracolumbar metastases with spinal cord compression. A decompressive laminectomy was routinely performed and followed by a transversoarthropediculectomy. Most part of the neoplastic tissue was removed from the epidural space, vertebral body and retroperitoneal or retro-pleural areas. Complete decompression of the nervous elements was always achieved. Stabilization was obtained by replacement of the neoplastic vertebral body with a methylmetacrylate prothesis and eventually by Kempf's compression instrumentation. The surgical treatment was completed in a single stage operation, by a classical posterolateral approach. Orthopaedic, neurologic and oncologic advantages of this treatment are discussed.
Assuntos
Vértebras Lombares/cirurgia , Metilmetacrilatos , Próteses e Implantes , Fusão Vertebral/instrumentação , Neoplasias da Coluna Vertebral/secundário , Vértebras Torácicas/cirurgia , Feminino , Humanos , Laminectomia , Masculino , Pessoa de Meia-Idade , Compressão da Medula Espinal/cirurgia , Neoplasias da Coluna Vertebral/cirurgiaRESUMO
We have studied regional cerebral blood flow (= test) and reactivity of acetazolamide injection (= retest) in 20 patients who had presented transient ischemic attacks (TIA). The cerebral blood flow was measured by the atraumatic Xenon 133 inhalation method and single photon emission tomography using a specially dedicated tomograph (TOMOMATIC 64), allowing 3 tomographic levels (OM + 1, + 5, + 9 cm). Measurements were realized in a quiet, dark room. Acetazolamide (500 mg or 1000 mg) was injected intravenously immediately after the test, and the retest was performed 15 minutes after, in the same conditions. Results obtained from paired ROIS were analysed in terms of asymmetric index for the test, of relative reactivity for retest in regard of normal values established in a group of healthy volunteers. All patients had neurological examination, vascular explorations and CT scan. Six of the patients showed a bad reactivity (abolished or strongly decreased) which was evoked a significant hemodynamically stenosis, reflecting the loss of collateral capacity. In the other group results were diversified, and we classified these in 4 groups: "normal" (7), "luxury perfusion" (3), "limited infarction" (1), and "incomplete infarction" (3). When these groups were plotted versus duration of onset and delay between the last attack and the moment of the measurement, "incomplete infarction" clearly appears as a step between brief TIA (less of 1 hour) and "limited infarction". So rCBF and reactivity to acetazolamide are of major interest for the physiopathological classification of TIAs, but also for treatment and prognosis.
Assuntos
Acetazolamida/uso terapêutico , Circulação Cerebrovascular/efeitos dos fármacos , Ataque Isquêmico Transitório/tratamento farmacológico , Acetazolamida/farmacologia , Adulto , Idoso , Cor , Feminino , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Reologia , Tomografia Computadorizada de Emissão/métodosRESUMO
Thirty-four patients were operated for dorsal disk pathology by a postero-lateral approach. The first cases have been followed-up for over 4 years and have shown this method to be reliable. When associated with the "harpoon" marker technique, the surgical indications now include not only patients with progressive radiculo-medullary symptoms, but also cases of sudden decompensation and those limited to radicular symptoms.
Assuntos
Deslocamento do Disco Intervertebral/cirurgia , Feminino , Humanos , Deslocamento do Disco Intervertebral/complicações , Deslocamento do Disco Intervertebral/diagnóstico por imagem , Deslocamento do Disco Intervertebral/patologia , Masculino , Métodos , Radiografia , Compressão da Medula Espinal/etiologiaRESUMO
A previously healthy 24 year old woman presented a progressive paraplegia during the third trimester of her second pregnancy. Partial improvement occurred after caesarian. The neuroradiological study revealed spinal cord compression by an extensive corporeo-pedicular angioma of the T2 vertebrae. Almost total recovery occurred after selective embolization. The occurrence of neurological complications of vertebral angiomas during pregnancy is rarely reported in the literature. Mechanisms of the spinal cord compression and their relations with the pregnancy are discussed and difficulties for diagnosis and treatment are emphasized. When technically possible, the embolization appears to be the most adapted treatment, especially for these extensive types of vertebral angioma.