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Videos de Conceptos Relacionados

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

75
A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
75
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

57
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
57
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

74
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
74
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

41
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
41
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

57
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
57
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

35
A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
35

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Video Experimental Relacionado

Updated: May 6, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

Published on: August 18, 2015

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Nanomedicina para el ictus isquémico

Lan Luo1, Meiqi Chang2, Ying Wang3

  • 1University of Shanghai for Science and Technology, Shanghai, 200093, PR China.

Biomaterials
|December 23, 2025
PubMed
Resumen
Este resumen es generado por máquina.

La nanomedicina ofrece soluciones avanzadas para el diagnóstico y tratamiento tempranos del ictus, superando las limitaciones actuales. Esta revisión destaca la nanotecnología

Palabras clave:
Imágenes de diagnósticoIctus isquémicoLiberación de fármacos con nanopartículasNanomedicinaNanoprobos

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Área de la Ciencia:

  • Ingeniería Biomédica
  • Ciencia de los Materiales
  • Neurología

Sus antecedentes:

  • La incidencia de ictus está aumentando a nivel mundial debido al envejecimiento de la población y a los cambios en el estilo de vida.
  • Los métodos actuales de diagnóstico y tratamiento del ictus tienen limitaciones significativas.
  • La nanomedicina presenta un enfoque prometedor para abordar estos desafíos.

Objetivo del estudio:

  • Revisar el papel de la nanomedicina en el avance del diagnóstico y tratamiento tempranos del ictus isquémico.
  • Analizar las propiedades de los nanomateriales, las estrategias de diseño y las aplicaciones en el manejo del ictus.
  • Explorar los desafíos y las direcciones futuras para la traslación clínica de la nanomedicina en la teranóstica del ictus.

Principales métodos:

  • Revisión de la literatura centrada en las aplicaciones de la nanomedicina en el ictus isquémico.
  • Análisis de las composiciones de nanomateriales y los diseños de superficie con fines diagnósticos y terapéuticos.
  • Examen de las nano-plataformas para la obtención de imágenes, la administración de fármacos y la teranóstica multifuncional.

Principales resultados:

  • Los nanomateriales sirven como agentes de contraste eficaces para mejorar la imagen del ictus.
  • Los nanotransportadores facilitan la administración dirigida de fármacos para mejorar la eficacia terapéutica.
  • Los nanosistemas multifuncionales ofrecen capacidades integradas de diagnóstico y terapéutica para el manejo del ictus.

Conclusiones:

  • La nanomedicina tiene un potencial significativo para revolucionar la teranóstica del ictus isquémico.
  • Abordar los desafíos en la traslación clínica es crucial para la adopción de la nanotecnología en el cuidado del ictus.
  • La investigación futura debe centrarse en la optimización de la nanomedicina para mejorar los resultados de los pacientes y la adopción clínica.