Related Experiment Video
Updated: May 2, 2026
06:01
A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
14.4K
Sex differences in stroke: the contribution of coagulation
Meaghan Roy-O'Reilly1, Louise D McCullough2
1University of Connecticut Health Center, School of Medicine, USA.
Experimental Neurology
|February 25, 2014
Summary
Women face a higher risk of stroke, the leading cause of adult disability. This review explores sex differences in stroke, focusing on platelets, vascular reactivity, and coagulation, influenced by hormonal factors.
Area of Science:
- Neurology
- Cardiovascular Science
- Endocrinology
Background:
- Stroke is the primary cause of adult disability in the U.S.
- Women are disproportionately impacted by stroke, especially in older age groups.
- Fundamental sex differences influence ischemic sensitivity and stroke risk.
Purpose of the Study:
- To review and discuss the significant sex differences in stroke.
- To highlight the impact of gonadal hormone exposure on coagulation and fibrinolysis.
- To focus on sex-based variations in platelets, vascular reactivity, and coagulation.
Main Methods:
- Literature review of existing studies on sex differences in stroke.
- Analysis of research on gonadal hormone effects on thrombosis.
- Examination of sex-specific factors in platelet function, vascular reactivity, and coagulation.
Main Results:
- Discussion of differential ischemic sensitivity between sexes.
- Exploration of how gonadal hormones affect coagulation and fibrinolysis.
- Detailed review of sex differences in platelet behavior and vascular responses.
Conclusions:
- Sex differences play a crucial role in stroke occurrence and outcomes.
- Understanding these differences is vital for targeted stroke prevention and treatment.
- Further research into sex-specific mechanisms can improve stroke care for all individuals.
Related Concept Videos
01:29Hemorrhagic Stroke ll: Pathophysiology
30
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...
30
01:17Hemorrhagic Stroke l: Introduction
20
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...
20
01:15Ischemic Stroke ll: Pathophysiology
54
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...
54
01:24Disorders of Hemostasis
2.7K
Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
2.7K
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
2.6K
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
2.6K
01:27Regulation of Stroke Volume
7.3K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
7.3K