Serum Brain-Derived Neurotrophic Factor: An Emerging Marker for Diabetic Retinopathy
2024

Serum BDNF Levels and Diabetic Retinopathy

Sample size: 88 publication Evidence: moderate

Author Information

Author(s): Muacevic Alexander, Adler John R, K. U. Vivek Ram, Siddiqi Sheelu S, Debbarman Tanusree, Mukherjee Amit, Akhtar Naheed, Waris Abdul, Thacker Dimple, Shaista

Primary Institution: Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University (AMU), Aligarh, IND

Hypothesis

This study aims to determine the association of serum brain-derived neurotrophic factor (BDNF) levels with diabetic retinopathy (DR) in type 2 diabetic patients.

Conclusion

Patients with diabetic retinopathy were found to have lower serum BDNF levels compared to those without retinopathy, suggesting BDNF may serve as an early predictor for DR.

Supporting Evidence

  • The mean serum BDNF in the control group was significantly higher than in the case group.
  • Logistic regression analysis indicated that BDNF is a good predictor for diabetic retinopathy.
  • The optimal cut-off value of serum BDNF for diagnosing DR was found to be 2139 pg/ml.

Takeaway

This study found that people with diabetic retinopathy have less of a special protein called BDNF in their blood, which might help doctors spot the problem early.

Methodology

A hospital-based case-control study with 44 diabetic patients with retinopathy and 44 without, measuring serum BDNF levels using ELISA.

Potential Biases

As a hospital-based case-control study, it may have inherent biases in participant selection.

Limitations

The study had a relatively small sample size and was conducted in a specific region, limiting generalizability.

Participant Demographics

Participants included 88 subjects with type 2 diabetes, 44 with retinopathy and 44 without, with a mix of genders.

Statistical Information

P-Value

p<0.0001

Confidence Interval

95% CI 0.933-1

Statistical Significance

p<0.0001

Digital Object Identifier (DOI)

10.7759/cureus.74153

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