An Observational Study of Serum Brain Derived Neurotrophic Factor Levels in Patients with Alcohol Dependence during Withdrawal.

Brain-Derived Neurotrophic Factor (BDNF) is a neuropeptide that plays an important role in Central Nervous System development, plasticity, learning, and memory. Its role has been explored in alcohol-dependent patients, though the results have been inconclusive. Thus, we aimed to compare serum BDNF levels in alcohol-dependent patients during withdrawal with age and gender matched controls, and assess changes in BDNF levels in the initial abstinence period. BDNF levels of alcohol-dependent patients (n = 25) were compared with controls (n = 25) at baseline. Additionally, BDNF levels were measured in cases on days 5 and 10 of inpatient detoxification. BDNF levels of controls did not differ with cases on day 1, 5, or 10. But BDNF levels increased significantly during alcohol abstinence from baseline to day 10 (Pillai's Trace F = 3.753, p = .039, partial η2 = 0.246), which may suggest its protective role. Thus, serum BDNF values may be potentially used as a biomarker to assess the abstinence state. However, longitudinal studies in different body samples is essential to better understand the role of BDNF in alcohol dependence.