Primer on Cerebrovascular Diseases

Spreading Depolarizations

Spreading depolarizations (SDs) are recurrent waves of intense neuronal and glial depolarization that develop in apparently spontaneous fashion in ischemic stroke, intracranial hemorrhage, and trauma. Although Leão first described spreading depression, an SD wave in normal (i.e., uninjured) brain, in…

Cytotoxic and Vasogenic Brain Edema

Introduction Cerebral edema is a buildup of fluid in the brain. It occurs after brain ischemia and different types of cerebral hemorrhage, as well as other conditions such as traumatic brain injury and brain neoplasms. It is a major clinical…

Central Neuroinflammation in Cerebral Ischemia: The Role of Glia

Introduction Poststroke neuroinflammation contributes to the delayed phase of neuronal cell death in the penumbra following cerebral ischemia . Therefore antiinflammatory strategies that would seek to inhibit the direct effects of inflammation on neuronal homeostasis have been the focus of…

Pathophysiology of Ischemic White Matter Injury

Cerebral ischemia is a complex injury process that results in damage to both gray matter and white matter. White matter accounts for up to half of the stroke lesion volume in the central nervous system (CNS), with 20% of strokes…

Histopathology of Intracerebral Hemorrhage

Introduction Intracerebral hemorrhage (ICH) is a subtype that is responsible for 10–15% of all strokes with significant morbidity and mortality. An ICH can be primary or secondary . A primary ICH results when a vulnerable small or large blood vessel…

Histopathology of Cerebral Ischemia and Stroke

Introduction The incidence of focal ischemia or stroke has been increasing over the last two decades with over 16 million new cases of stroke reported worldwide in 2010. Focal ischemic brain injury leads to local neurological deficits and a progression…

Thrombosis

Introduction Thrombosis resulting from various pathologies is the underlying cause of the majority of ischemic strokes. Hemostasis is the complex and highly regulated system that helps to maintain the integrity of blood and the vasculature. Maintenance of blood flow depends…