Differences in Plasmalogen Levels Between Humans and Great Apes
Author Information
Author(s): Ann B. Moser, Steven J. Steinberg, Paul A. Watkins, Hugo W. Moser, Krishna Ramaswamy, Kimberly D. Siegmund, D. Rick Lee, John J. Ely, Oliver A. Ryder, Joseph G. Hacia
Primary Institution: Hugo W. Moser Research Institute at Kennedy Krieger, and Department of Neurology, Johns Hopkins University School of Medicine
Hypothesis
Cross-species differences in plasmalogen metabolism are responsible for the distinctions between human and great ape RBC plasmalogen profiles.
Conclusion
Human and great ape red blood cells have significantly different plasmalogen levels and compositions, primarily due to differences in their rates of biosynthesis and turnover.
Supporting Evidence
- Total RBC plasmalogen levels were lower in humans than in bonobos, chimpanzees, and gorillas.
- Human vegan RBC data showed comparable total plasmalogen levels to those on Western diets.
- No robust sex-specific differences in plasmalogen levels were found in humans or chimpanzees.
- Gene expression data indicated differential expression of genes involved in plasmalogen biosynthesis across species.
Takeaway
This study found that humans and great apes have different levels of a type of fat called plasmalogens in their blood, which might affect how their bodies work.
Methodology
Blood samples were collected from humans and great apes, and plasmalogen levels were measured using lipid profiling techniques.
Potential Biases
Potential biases in dietary reporting among human participants could affect plasmalogen level comparisons.
Limitations
The study primarily focused on red blood cells and may not fully represent plasmalogen levels in other tissues.
Participant Demographics
Included adult humans with Western and vegan diets, and various great ape species.
Statistical Information
P-Value
p<1 × 10-6
Statistical Significance
p<1 × 10-4
Digital Object Identifier (DOI)
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