NCT03877393

The Effect of Probiotic Supplementation on the Mental Status, Inflammation, and Intestinal Barrier in Major Depressive Disorder Patients Using Gluten-free or Gluten-containing Diet

A 12-week, Randomized, Double-blind, and Placebo-controlled Study Evaluating the Effect of Probiotic Supplementation on the Mental Status, Inflammation, And Intestinal Barrier in Major Depressive Disorder Patients Using Gluten-free or Gluten-containing Diet

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 120 (estimated)
• Sponsor: Medical University of Lublin · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Not accepted

Summary

More and more evidence confirms the relationship between the gut-brain-microbiota axis and the symptoms of mood disorders. A potential pathway connecting the intestines and the brain in depression is inflammation. Interventions for reducing inflammation and restoring the integrity of the intestinal mucosa are promising approaches in patients with major depressive disorder (MDD). Gut dysbiosis and the diet containing gluten are potential factors may be factors that negatively affect the communication between intestinal and brain. Gluten has a high immunogenic potential and affinity for the intestinal mucosa layer. In patients with an abnormal reaction to gluten, the elimination diet led to improved mood symptoms. However, the relationship between gluten and depression is still poorly understood. Intestinal microbiota can affect the digestion of gluten and reduce its immunogenic potential. Studies have shown that probiotic supplementation has an anti-inflammatory effect, can lead to changes in intestinal permeability and alleviate the symptoms of depression. This evidence supports the need for co-therapy, including the elimination of gluten and the restoration of intestinal eubiosis to reduce inflammation and modulate the gut-brain-microbiota axis. The objective of the SANGUT study is to determine the impact of interventions concerning the gut-brain-microbiota axis (probiotic supplementation, gluten-free diet and their combination) on the mental state, markers of inflammation and markers of intestinal permeability in adult patients with MDD. The study will last 12 weeks and consist of four visits (V): V0 - Screening (Day 0), V1 - Baseline (up to 1 week after Screening), V2 (six weeks after Baseline), V3 - End of the study (12 weeks after Baseline). The main hypothesis is that probiotic supplementation and/or a gluten-free diet will reduce the symptoms of depression, lower the level of inflammatory markers and favourably affect the integrity of the intestinal mucosal barrier.

Conditions

• Depressive Disorder, Major
• Depression

Interventions

Type	Name	Description
COMBINATION_PRODUCT	Probiotic supplementation + gluten-free diet	The probiotic and gluten-free diet group (PRO-GFD) will receive one capsule containing the probiotic mixture powder (Sanprobi Stress; Sanprobi sp. z o.o., sp.k., Szczecin, Poland) in the amount of 3 × 10\^9 colony forming units (CFU) per day divided in two equal doses, comprising two bacteria strains: Lactobacillus helveticusRosell®-52, Bifidobacterium longumRosell®-175, and excipients: potato starch, magnesium stearate, and the capsule shell of hydroxypropyl methylcellulose. The participants will be asked to consume supplements before breakfast. The group will follow the elimination diet containing no gluten.
COMBINATION_PRODUCT	Placebo supplementation + gluten-free diet	The placebo and gluten-free diet group (PLA-GFD) will receive one capsule containing only the excipients, i.e. maize starch, maltodextrins, and the capsule shell. The participants will be asked to consume supplements before breakfast. The group will follow the elimination diet containing no gluten.
COMBINATION_PRODUCT	Probiotic supplementation + gluten-containing diet	The probiotic and gluten-containing diet group (PRO-GD) will receive one capsule containing the probiotic mixture powder (Sanprobi Stress; Sanprobi sp. z o.o., sp.k., Szczecin, Poland) in the amount of 3 × 10\^9 colony forming units (CFU) per day divided in two equal doses comprising two bacteria strains: Lactobacillus helveticusRosell®-52, Bifidobacterium longumRosell®-175 and excipients: potato starch, magnesium stearate, and the capsule shell of hydroxypropyl methylcellulose. The participants will be asked to consume supplements before breakfast. The group will stay with their current diet.
COMBINATION_PRODUCT	Placebo supplementation + gluten-containing diet	The placebo and gluten-containing diet group (PLA-GD) will receive one capsule containing only the excipients, i.e. maize starch, maltodextrins, and the capsule shell. The participants will be asked to consume supplements before breakfast. The group will stay with their current diet.

Timeline

• Start date: 2019-04-01
• Primary completion: 2020-07-01
• Completion: 2021-02-01
• First posted: 2019-03-15
• Last updated: 2019-03-15

Locations

1 site across 1 country: Poland