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Abstract Title:

Effect of synbiotic and probiotic supplementation on serum brain-derived neurotrophic factor level, depression and anxiety symptoms in hemodialysis patients: a randomized, double-blinded, clinical trial.

Abstract Source:

Nutr Neurosci. 2019 Aug 4:1-10. Epub 2019 Aug 4. PMID: 31379269

Abstract Author(s):

Neda Haghighat, Shirin Rajabi, Majid Mohammadshahi

Article Affiliation:

Neda Haghighat

Abstract:

BACKGROUND: The aim of this study was to investigate the effects of probiotic and synbiotic supplementation on the depression and anxiety symptoms and serum brain-derived neurotrophic factor (BDNF) level.

METHODS: Seventy-five HD patients were randomly assigned to receive the synbiotic (15 g of prebiotics, 5 g of probiotic containingT16,BIA-6,BIA-7, andBIA-8 (2.7 × 10 CFU/g each)) or probiotics (5 g probiotics as in synbiotic group with 15 g of maltodextrin as placebo) or placebo (20 g of maltodextrin) for 12 weeks. Serum BDNF was measured by ELISA kit. Hospital Anxiety and Depression Scale (HADS) was used to assess symptoms of depression (HADS-DEP) andanxiety (HADS-ANX).

RESULTS: From baseline to 12 weeks, synbiotic supplementation resulted in a significant decrease in HADS-DEP score in a subgroup of patients with depressive symptom (HADS-DEP ≥ 8) compared to the placebo and probiotic supplementation ( = .001, = .002, respectively) and in all patients compared to the placebo ( = .004). There was no significant difference among the groups in terms of HADS-ANX scores. However, the HADS-ANX scores decreased significantly in the synbiotic group compared to the baseline in all patients ( = .047) and also patients with depressive symptom ( = .03). In addition, in a subgroup of HD patients with depressive symptom, the serum BDNF increased significantly in the synbiotic group when compared to the placebo ( < .001) and probiotic group ( = .011).

CONCLUSION: Overall, 12 weeks of synbiotic supplementation resulted in greater improvement in depression symptoms and serum BDNF level compared to the probiotic supplementation in HD patients especially in the subgroup of patients with depression symptoms.

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