Probiotics and the microbiota-gut-brain axis: focus on patients with depression. A review of current research.

This review covers recent data on the relationship between major depressive disorder (MDD) and faecal microbiome and examines the co-relations between the use of probiotics and changes in psychiatric state. We conducted a thorough search of academic databases for articles published between 2018 and 2022, using specific keywords and previously established inclusion/exclusion criteria regarding faecal microbiota, depressive disorder, and probiotics. Of 192 eligible articles (reviews, original papers, and clinical trials), we selected 10 that fully met our criteria and performed a careful review to determine any correlation between microbiome, probiotic treatment, and depression. All patients were adults (mean age, 36.8), with at least one MDD episode and onset of depression during adolescence (duration of 31.39 years of depressive episodes). We found mixed but mostly positive results regarding the influence of probiotic/prebiotic/postbiotic effects on depression. We could not identify the precise mechanism of action that led to their improvement. Antidepressants did not alter the microbiota, according to studies that evaluated this aspect. Probiotic/prebiotic/postbiotic treatments were proven to be safe, with few and mild side effects. Probiotics seemingly could be beneficial in patients with depression, as evidenced by well-established depression scales. Based on this finding and the high tolerability and safety of probiotics, no caveats against their routine use can be made. Some unmet needs in this field include determination of the dominant type of microbiota in specific patients with depression; study of microbiome-directed/driven treatment regarding dose and duration adjustments; and multiple versus single strain treatments.

Psychosocial profile of the patients with inflammatory bowel disease.

Inflammatory bowel disease (IBD) is a chronic, disabling entity of unknown aetiology, with negative impact on the patient's life, including psychological patterns. This study assessed multiple psychosocial factors (satisfaction with life, coping mechanisms, emotional profile, mental recognition of the disease and cognition schemes related to patients' demographic characteristics, clinical picture, form and duration of the disease, therapeutic plans) in IBD patients vs. a healthy group. This non-interventional study comprised 60 participants who attended for medical advice/check-up as an ambulatory visit or during hospitalization. The patients completed questionnaires after receiving explanations from the psychologist. Statistical analyses (Kolmogorov-Smirnov test, Independent-Samples t-test, One-Way ANOVA and Post Hoc Multiple Comparisons) were conducted using IMB for the Social Sciences (SPSS), version 20 (P≤0.05). IBD patients (G1) are more hostile when compared to the healthy group (G2). Those who experience abdominal pain are more likely to use active coping mechanisms and those who experience fatigue are more likely to use acceptance, emotional venting, behavioural disengagement and mental disengagement. G1 have higher levels of others-downing vs. G2. Regarding negative emotions, IBD patients generally experience more negative emotions compared to healthy participants (who have higher levels of life satisfaction). Regarding the perception of illness, there are no differences between patients in terms of illness coherence, personal or treatment control, consequences, timeline, or emotional representations. Results indicate that psychological factors and different characteristics of IBD patients play a relevant role in the way these patients deal with their disease.