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Introduction: We aimed to evaluate Agouti-Related Peptide (AgRP) and asprosin levels in adults with Attention Deficit Hyperactivity Disorder (ADHD), and to examine the relationship between eating behavior, metabolic parameters, AgRP and asprosin. Methods: Forty-five adult ADHD patients and 45 controls were included in the study. The Adult Diagnostic Interview Scale for ADHD (DIVA 2.0) and Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders-5 Clinician Version (SCID-5/CV) were administered to the participants. The Adult Attention Deficit Hyperactivity Disorder Self-Report Scale (ASRS) and the Dutch Eating Behavior Questionnaire (DEBQ) were completed by the participants. Biochemical parameters, AgRP and asprosin levels of the participants were measured. Results: Adults with ADHD had significantly higher HbA1c, body mass index (BMI), and waist circumference. Eating behaviors and lipid profile were impaired in the patients. A significant positive correlation was found between the patients' ASRS/hyperactivity-impulsivity scores and DEBQ/emotional eating and DEBQ/external eating. A significant positive correlation was found between ASRS/total score and DEBQ/emotional eating, DEBQ/external eating, and DEBQ/total eating scores. AgRP and asprosin levels were significantly lower in the patients. The effect sizes of AgRP and asprosin were 0.526 and 0.839, respectively. A negative correlation was found between AgRP and asprosin levels of the patients and BMI. It was seen that AgRP and asprosin were confounding factors for each other, and the significance between the groups was due to asprosin. Asprosin defined ADHD at a higher rate than AgRP. Conclusion: The study emphasizes the link between eating behavior and the hedonic system in ADHD. It also showed that AgRP and asprosin levels are low in adult ADHD. Low AgRP and asprosin levels may be an indication of impaired energy homeostasis and/or a structural cause for ADHD.
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OBJECTIVE: The etiology of bipolar disorder (BD) is still not fully understood. Little is currently known about the relationship between the interaction the gastrointestinal system and brain function and BD. Zonulin is the only known physiological modulator of tight junctions and is a biomarker for intestinal permeability (IP). Occludin is an integral transmembrane tight junction protein involved in the maintenance and assembly of such junctions. The current study aims to determine whether zonulin and occludin levels are altered in BD and whether they can serve as clinical biomarkers of disease. METHODS: Forty-four patients with BD and 44 healthy controls were included in this study. The Young Mania Rating Scale (YMRS) was used to determine the severity of manic symptoms, while the Hamilton Depression Rating Scale (HDRS) was used to determine the severity of depressive symptoms, and the Brief Functioning Rating Scale (FAST) to assess functionality. Venous blood samples were taken from all participants and serum zonulin and occludin levels were measured. RESULTS: The mean serum zonulin and occludin levels of the patients were significantly higher compared to the healthy control group. There was no difference between manic, depressive, and euthymic patients in terms of zonulin and occludin levels. There was no correlation between the total number of attacks, duration of disease, YMRS, HDRS, FAST scores, and zonulin and occludin levels in the patient group. The groups were divided into three according to body mass index as normal, overweight, and obese. Zonulin and occludin levels increased as body mass index increased and were highest in the obese group. CONCLUSION: The study shows that zonulin and occludin levels in BD increase independently of the disease stage. Consideration of the role of IP in the pathogenesis of BD may be helpful in determining the appropriate treatment modality.
