Telomere Length in Keloids Compared to Normal Skin
Author Information
Author(s): Granick Mark MD, Kimura Masayuki MD, PhD, Kim Soyeon ScD, Daniali Lily MD, Cao Xiaojian, Herbig Utz PhD, Aviv Abraham MD
Primary Institution: New Jersey Medical School, University of Medicine and Dentistry of New Jersey
Hypothesis
Telomeres should be shorter in keloids than in normal skin due to cell replication.
Conclusion
Telomere length in keloids is not shorter than in adjacent normal skin and may even be longer.
Supporting Evidence
- The mean telomere length in keloids was longer than in adjacent normal skin.
- Telomere length showed a gradient, being shorter just below the epidermis and longer at the base of the keloids.
- No apparent telomerase activity was detected in the keloids.
- Telomere length was highly variable among individuals but correlated among tissues within the same individual.
Takeaway
Keloids, which are raised scars, have telomeres that are not shorter than normal skin, suggesting a different growth process.
Methodology
Telomere length was measured in keloids and adjacent normal skin using Southern blot analysis.
Potential Biases
Potential bias due to the small sample size and demographic variability.
Limitations
The study had a small sample size and could not always obtain a complete set of samples.
Participant Demographics
Participants included 13 African Americans, 2 Hispanics, and 1 Asian; 8 males and 8 females, aged 14 to 58 years.
Statistical Information
P-Value
P = .041
Confidence Interval
95% CI: 7.84–8.81 for subcutaneous fat, 95% CI: 6.85–7.73 for skin, 95% CI: 6.49–7.61 for blood
Statistical Significance
p<0.05
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