Serum brain-derived neurotrophic factor in relation to craving and duration of abstinence in patients with heroin dependence-A case-control study.

BACKGROUND AND OBJECTIVES: Addiction is a chronic disorder that comes with emotional and financial burdens. Several neurobiological factors were correlated to opiate-use disorder which is brain-derived neurotrophic factor (BDNF). BDNF has been found to be involved in long-term potentiation of synaptic strength, a mechanism that is thought to motivate both natural adaption mechanisms as well as the development of addictive behavior. In this study, we aimed to address the relation between BDNF serum level and heroin craving and the effect of duration of abstinence on them. METHODS: A case study was conducted on 80 subjects from Kasr Al-Ainy Psychiatry and Addiction Treatment Hospital with a history of heroin dependence and were divided into two groups: Group A had 40 active heroin-dependent subjects while in Group B, 40 subjects with 1-year heroin abstinence. Severity of addiction was assessed by the addiction severity index, heroin craving was measured by Brief Substance Craving Scale and serum BDNF level was investigated using an enzyme-linked immunosorbent assay. RESULTS: The findings show that active heroin users had significantly higher serum BDNF which is associated with high heroin craving in comparison to the abstinent group. CONCLUSIONS AND SCIENTIFIC SIGNIFICANCE: This study revealed a significant positive correlation between serum BDNF levels and craving in active heroin users versus 1-year abstinent subjects. It is the first study to address the relationship between craving and serum BDNF level in a 1-year abstinent participants. These findings help to determine the brain alterations associated with illness and recovery in heroin dependence.

Sexual and Religious Obsessions in Relation to Suicidal Ideation in Bipolar Disorder.

OBJECTIVES: Obsessions and suicidal behavior are common among patients with bipolar disorder. The relation between them and their impact on disease severity should be a focus of attention. This study aimed at assessment of the presence of sexual and religious obsessions in patients with bipolar disorder and their relation to suicide ideation. METHODS: Ninety patients diagnosed with bipolar I disorder were recruited consecutively and subdivided into two groups: bipolar disorder with and without sexual/religious obsessions. Both groups were subjected to Dimensional Yale-Brown Obsessive-Compulsive Scale (DY-BOCS), Young Mania Rating Scale (YMRS), Hamilton Depression Rating Scale (HAMD), and Beck Scale for Suicide Ideation (BSSI). RESULTS: Patients with bipolar disorder and sexual/religious obsessions were 54.4% (n = 49) of the total sample, and they showed significantly higher number of suicidal attempts, more severe depression, and suicidal ideation than those without sexual/religious obsessions. BSSI showed significantly positive correlation with HAMD and DY-BOCS sexual and religious obsessions dimension-related distress. CONCLUSION: Sexual and religious obsessions tend to be more frequent among patients with bipolar disorder. Higher depression and obsessive-related distress potentially contribute to the increased risk of suicidal ideation.