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Updated: Dec 14, 2025

Evaluation of Cerebral Blood Flow Autoregulation in the Rat Using Laser Doppler Flowmetry
Published on: January 19, 2020
Cerebral hemodynamics in the non-alcoholic fatty liver
David Vidal-González1, Guillermo Nahúm López-Sánchez1, Luis Arturo Concha-Rebollar2
1Traslational Research Unit, Medica Sur Clinic & Foundation, Mexico.
Insights
Non-alcoholic fatty liver disease (NAFLD) is linked to altered cerebral blood flow, indicated by changes in middle cerebral artery (MCA) and vertebral artery (VA) pulsatility index. This suggests subclinical vascular changes in NAFLD patients needing attention.
Area of Science:
- Cardiovascular Medicine
- Hepatology
- Neurology
Background:
- Non-alcoholic fatty liver disease (NAFLD) is associated with cardiovascular damage mechanisms including endothelial dysfunction and arterial stiffness.
- Systemic inflammation and lipid metabolism dysregulation contribute to vascular damage in NAFLD.
- Cerebral hemodynamics may be affected by NAFLD through shared pathophysiological pathways.
Purpose of the Study:
- To investigate the relationship between NAFLD and cerebral circulation function.
- To assess systemic and cerebral hemodynamic changes in patients with NAFLD using Doppler ultrasound.
Main Methods:
- An observational, cross-sectional, prospective, comparative study was conducted.
- Thirty-five patients with neurological symptoms were consecutively selected.
- Doppler ultrasound was used to evaluate cerebral hemodynamics.
Main Results:
- Significant differences in the mean pulsatility index (PI) of the right middle cerebral artery (MCA), left MCA, and left vertebral artery (VA) were observed between control and NAFLD groups.
- Positive correlations were found between the right MCA PI, left MCA PI, and left VA PI with the controlled attenuation parameter (CAP), a marker of liver fat content.
Conclusions:
- The study reveals a subclinical process affecting the middle cerebral artery in individuals with NAFLD.
- These findings suggest NAFLD may contribute to cerebral vascular disease development.
- Early detection and management strategies for NAFLD are crucial to prevent potential liver and vascular complications.
Introduction And Objectives:
The association between non-alcoholic fatty liver disease and cerebral hemodynamics arises from cardiovascular damage mechanisms such as endothelial dysfunction, arterial wall increased stiffness, high thickness of the intimate index of the internal carotid artery, left ventricular hypertrophy, left diastolic dysfunction, calcification coronary arteries and increased epicardial fat. The multidirectional relationship between systemic inflammation and lipid metabolism constitutes a common and simultaneous mechanism that causes vascular damage. This study aims to provide insight into the relationship between non-alcoholic fatty liver disease and the function of systemic circulation and cerebral circulation using Doppler ultrasound.
Patients And Methods:
Is an observational, cross-sectional, prospective, comparative study conducted at Medica Sur Hospital. Thirty-five patients were selected consecutively. The patients consulted neurological service for various symptoms without severity criteria, such as vertigo, primary headache and balance disturbances.
Results:
There is a difference in the variables mean of the right MCA PI (p = 0.023), left MCA PI" (p = 0.004), and left VA PI (p = 0.036) between the control and NAFLD groups. The correlation analysis between these variables and the CAP showed a positive correlation of the three variables with the CAP, "right MCA PI" (r = 0.384), left MCA PI "(r = 0.509) and" left VA PI " (r = 0.551).
Conclusions:
This study demonstrates a subclinical process of the middle cerebral artery in subjects with NAFLD, which suggests it may be involved in the disease development and points the need to make decisions for this liver manifestation prevention and treatment.
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