Publications by authors named "Jaime Diaz-Guzman"

Cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy (CARASIL) is an autosomal recessive vascular disorder caused by biallellic variants in HTRA1. Recently, it has been reported that several heterozygous mutations in HTRA1 are responsible for a milder late-onset cerebral small vessel disease (CSVD) with an autosomal dominant pattern of inheritance. The majority of them are missense that affects the Htr1A protease activity due to a dominant-negative effect caused by defective trimerization or monomer activation.

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Article Synopsis
  • Atrial fibrillation (AF) has become more common, increasing the risk of strokes, but recent studies indicate that the use of direct oral anticoagulants (DOACs) may be reducing stroke rates related to AF in Spain.
  • The study used data from the Spanish Ministry of Health to analyze the relationship between DOAC use and AF-related ischemic strokes in patients aged 65 and older, using statistical models for analysis.
  • Results showed that before DOACs were widely used, the incidence of AF-related strokes rose, but after their introduction, rates stabilized or slightly decreased, indicating that higher DOAC uptake may positively impact health outcomes for AF patients.
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Objective: Current prehospital scales used to detect large vessel occlusion reveal very low endovascular thrombectomy (EVT) rates among selected patients. We developed a novel prehospital scale, the Madrid-Direct Referral to Endovascular Center (M-DIRECT), to identify EVT candidates for direct transfer to EVT-capable centers (EVT-Cs). The scale evaluated clinical examination, systolic blood pressure, and age.

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Background and Purpose- Recanalization of the occluded artery is a primary goal in stroke treatment. Unfortunately, endovascular treatment is not always available, and tPA (tissue-type plasminogen activator) therapy is limited by its narrow therapeutic window; importantly, the rate of early arterial recanalization after tPA administration is low, especially for platelet-rich thrombi. The mechanisms for this tPA resistance are not well known.

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Background: Both acute single intracranial and tandem occlusions are managed with intravascular thrombectomy with success, but little evidence exists about the differences in their mid-term outcome. We aim to compare the outcome at 3 months after tandem (extracranial internal carotid and/or middle cerebral artery) and single intracranial (M1 division) occlusions, and to identify the factors, which determine such prognosis.

Methods: A total of 66 patients (33 with tandem and 33 with singleM1 occlusions) who underwent emergent intravascular therapy in our center between November of 2013 and November of 2016 were collected.

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Ischemic brain injury causes a local inflammatory response, involving the activation of resident brain cells such as microglia and the recruitment of infiltrating immune cells. Increasing evidence supports that plasticity of the myeloid cell lineage is determinant for the specific role of these cells on stroke outcome, from initiation and maintenance to resolution of post-ischemic inflammation. The aim of this review is to summarize some of the key characteristics of these cells and the mechanisms for their recruitment into the injured brain through interactions with platelets, endothelial cells and other leukocytes.

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Background and Purpose- Recanalization with tPA (tissue-type plasminogen activator) is the only pharmacological therapy available for patients with ischemic stroke. However, the percentage of patients who may receive this therapy is limited by the risk of hemorrhagic transformation (HT)-the main complication of ischemic stroke. Our aim is to establish whether iron overload affects HT risk, to identify mechanisms that could help to select patients and to prevent this devastating complication.

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Stroke is a cerebrovascular pathology for which the only approved treatment is fibrinolysis. Several studies have focused on the development of new drugs but none has led to effective therapies to date, due, among others, to the difficulty to evaluate clinical deficits in experimental animal models. The present study aims to explore the applicability of known behavioral tests not commonly used in ischemia for the neurological assessment of mice after experimental stroke in different brain areas.

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Background And Purpose: Hemorrhagic transformation is the main complication of revascularization therapies after stroke. Toll-like receptor 4 (TLR4) is implicated in cerebral damage and inflammation in stroke. This study was designed to determine the role of TLR4 in hemorrhagic transformation development after tissue plasminogen activator (tPA) administration.

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Background And Objective: The aim of the present study was to determine the national burden of cerebrovascular diseases in the adult population of Spain.

Patients And Methods: Cross-sectional, descriptive population-based study. We calculated the disability-adjusted life years (DALY) metric using country-specific data from national statistics and epidemiological studies to obtain representative outcomes for the Spanish population.

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We report the case of a 59-year-old woman who presented with several episodes of transient ischemic attack (TIA) caused by pathologically confirmed giant cell arteritis. She continued suffering from TIAs during admission despite immunosuppressant and antithrombotic therapy. Sudden neurological deterioration with paraparesis and cognitive impairment developed.

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Background: In Spain, stroke is a major public health concern, but large population-based studies are scarce and date from the 1990s. We estimated the incidence and in-hospital mortality of stroke through a multicentered population-based stroke register in 5 geographical areas of Spain, i.e.

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Background: Stroke is one of the most disabling and burdensome health conditions worldwide, but no prospective population-based study has been conducted in Spain. Our aim was to assess age- and gender incidence rates of cerebrovascular disease, including stroke and transient ischemic attack, in three populations in central Spain using data from the NEDICES (Neurological Diseases in Central Spain), a population-based survey of elderly participants.

Methods: Individuals were evaluated at baseline (1994-1995) and at follow-up (a median of 3.

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Background: This study sought to describe stroke prevalence in Spanish elderly populations and compare it against that of other European countries.

Methods: We identified screening surveys--both published and unpublished--in Spanish populations, which fulfilled specific quality requirements and targeted prevalence of stroke in populations aged 70 years and over. Surveys covering seven geographically different populations with prevalence years in the period 1991-2002 were selected, and the respective authors were then asked to provide descriptions of the methodology and raw age-specific data by completing a questionnaire.

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