Hypertension and Sphingolipid Biology
Author Information
Author(s): Spijkers Léon J. A., van den Akker Rob F. P., Janssen Ben J. A., Debets Jacques J., De Mey Jo G. R., Stroes Erik S. G., van den Born Bert-Jan H., Wijesinghe Dayanjan S., Chalfant Charles E., MacAleese Luke, Eijkel Gert B., Heeren Ron M. A., Alewijnse Astrid E., Peters Stephan L. M.
Primary Institution: Academic Medical Center, Amsterdam, The Netherlands
Hypothesis
In essential hypertension, sphingolipid ratios are altered, resulting in an altered vasomotor function.
Conclusion
Hypertension is associated with marked alterations in vascular sphingolipid biology such as elevated ceramide levels and signaling, that contribute to increased vascular tone.
Supporting Evidence
- Elevated ceramide levels were found in arterial tissue of hypertensive rats compared to normotensive rats.
- Infusion of dimethylsphingosine caused a significant increase in blood pressure in hypertensive rats.
- Similar increases in ceramide levels were observed in plasma from humans with essential hypertension.
Takeaway
High blood pressure changes how certain fats in the body work, which can make blood vessels tighter and lead to more health problems.
Methodology
The study involved isolated carotid arteries from spontaneously hypertensive rats and normotensive rats, examining the effects of sphingosine kinase inhibitors and sphingomyelinase on vascular contractions.
Limitations
The study does not establish causality between altered sphingolipid levels and hypertension.
Participant Demographics
The study included 18 normotensive and 19 hypertensive human participants, with a mean age of approximately 44 years.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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