Changes in Human Saphenous Vein Wall in Varicose Veins
Author Information
Author(s): Asbeutah Akram M, Asfar Sami K, Safar Hussain, Oriowo Mabayoje A, ElHagrassi Ihab, Abu-Assi Mona A, Cameron James D, McGrath Barry P
Primary Institution: Monash University and Kuwait University
Hypothesis
Do noradrenaline and 5-hydroxytryptamine drugs induce different responses in isolated control and varicose veins when the endothelium is removed?
Conclusion
Varicose venous segments dilate more and return slowly to their original diameter compared to control and normal venous segments, indicating venous wall dysfunction.
Supporting Evidence
- Varicose veins dilate more and return to resting diameter more slowly than normal veins.
- Endothelial damage may lead to vascular smooth muscle dysfunction.
- Removal of the endothelium significantly reduced the maximum response to noradrenaline in varicose veins.
Takeaway
This study looked at how veins from people with varicose veins behave differently than normal veins when tested with certain drugs. It found that the varicose veins don't work as well.
Methodology
The study involved measuring diameter changes of the great saphenous vein using duplex ultrasound in vivo and testing isolated vein segments in vitro with noradrenaline and 5-hydroxytryptamine.
Potential Biases
Potential bias due to the health status of control subjects and the small sample size.
Limitations
The study's findings may be influenced by the underlying health conditions of the control group subjects.
Participant Demographics
12 subjects with primary varicose veins (6 females, 6 males, mean age 41.4 years) and 12 control subjects (6 females, 6 males, mean age 50.2 years).
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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