Related Experiment Video

Updated: Jul 16, 2026

Modeling Stroke in Mice - Middle Cerebral Artery Occlusion with the Filament Model
06:28

Modeling Stroke in Mice - Middle Cerebral Artery Occlusion with the Filament Model

Published on: January 6, 2011

Cigarette smoking decreases cerebral blood flow suggesting increased risk for stroke

R L Rogers, J S Meyer, T G Shaw

    JAMA
    |November 25, 1983
    PubMed

    Insights

    Chronic cigarette smoking significantly reduces cerebral blood flow, especially in individuals with existing stroke risk factors. This effect appears additive, highlighting smoking as a potent risk factor for reduced brain blood supply.

    Area of Science:

    • Neurology
    • Cardiovascular Science
    • Public Health

    Background:

    • Cerebral blood flow is crucial for brain health.
    • Chronic cigarette smoking is a known risk factor for cardiovascular diseases.
    • The specific impact of smoking on cerebral blood flow, particularly in conjunction with other risk factors, requires further elucidation.

    Purpose of the Study:

    • To investigate the effects of chronic cigarette smoking on cerebral blood flow (Fg).
    • To determine if stroke risk factors exacerbate the impact of smoking on cerebral blood flow.
    • To identify smoking as a potential risk factor for reduced cerebral blood flow.

    Main Methods:

    • Measured gray matter blood flow (Fg) using xenon 133 inhalation in 192 volunteers.
    • Categorized participants into normal healthy volunteers and those with stroke risk factors (hypertension, hyperlipidemia, diabetes, heart disease).
    • Assessed smoking status, pack-years, alcohol consumption, and age.

    Main Results:

    • Significant reductions in mean Fg values were observed in both hemispheres related to tobacco consumption and stroke risk factors.
    • Multiple-regression analysis indicated smoking, age, risk factors, and alcohol consumption explained 22% of the variance in Fg.
    • Chronic smoking in individuals with other risk factors led to further, additive reductions in Fg.

    Conclusions:

    • Chronic cigarette smoking is a potent risk factor that decreases cerebral blood flow, likely by promoting cerebral arteriosclerosis.
    • The detrimental effects of smoking on cerebral blood flow are amplified in individuals with pre-existing stroke risk factors.
    • Public health initiatives should emphasize smoking cessation to mitigate risks to cerebral blood flow and overall brain health.

    More Related Videos

    Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability09:11

    Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability

    Published on: February 23, 2016

    Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice08:41

    Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice

    Published on: December 29, 2016

    Related Concept Videos

    Stress Prevention and Stress Management Techniques IV01:26

    Stress Prevention and Stress Management Techniques IV

    Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
    Stroke: Introduction and Types01:29

    Stroke: Introduction and Types

    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...
    Ischemic Stroke l: Introduction01:15

    Ischemic Stroke l: Introduction

    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.
    Ischemic Stroke ll: Pathophysiology01:15

    Ischemic Stroke ll: Pathophysiology

    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...
    Hemorrhagic Stroke l: Introduction01:17

    Hemorrhagic Stroke l: Introduction

    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...
    Hemorrhagic Stroke ll: Pathophysiology01:29

    Hemorrhagic Stroke ll: Pathophysiology

    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...