Telomere Length and DNA Damage in Type 2 Diabetes
Author Information
Author(s): Kejariwal Deepak, Stepien Karolina M, Smith Tracy, Kennedy Hugh, Hughes David A, Sampson Mike J
Primary Institution: Norfolk and Norwich University Hospital
Hypothesis
The colonic mucosa in Type 2 diabetes would be characterised by increased DNA damage and telomere shortening.
Conclusion
Colonic epithelium in Type 2 diabetes does not differ significantly from control colonic epithelium in oxidative DNA damage or telomere length.
Supporting Evidence
- Mean colonic epithelial telomere length in the diabetes group was not significantly different from controls.
- Levels of oxidative DNA damage were similar in both T2DM and control groups.
- There was no significant relationship between oxidative DNA damage and telomere length in either group.
Takeaway
This study looked at people with Type 2 diabetes and found that their colon cells didn't have more DNA damage or shorter telomeres compared to healthy people.
Methodology
Telomere length was measured by flow fluorescent in situ hybridization and oxidative DNA damage was assessed using flow cytometry of 8-oxoguanosine.
Potential Biases
Higher use of aspirin, ACE inhibitors, and statins in the T2DM group may confound results.
Limitations
The study had a small sample size in the diabetic patients.
Participant Demographics
Caucasian non-smokers aged 50-70 years, with 10 Type 2 diabetes patients and 22 matched controls.
Statistical Information
P-Value
0.5
Statistical Significance
p>0.1
Digital Object Identifier (DOI)
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