Dietary Supplements

Efficacy of Sertraline Combined With Intestinal Microecological Therapy in Adolescents With Moderate Depression and Suicidal Ideation and Its Effects on Serum Inflammatory Factors.

TL;DR

Sertraline combined with Bacillus subtilis probiotic preparation enhanced antidepressant efficacy in adolescents with moderate depression and suicidal ideation by reducing neuroinflammation, as evidenced by significantly improved clinical symptoms and reduced serum inflammatory markers compared to sertraline monotherapy.

Key Findings

The combination therapy group had a significantly lower proportion of patients with severe depression compared to the monotherapy group after 12 weeks.

  • Severe depression proportion was 1.25% in the combination group versus 7.5% in the monotherapy group.
  • The difference was statistically significant (p = 0.004).
  • Assessments were conducted using the Hamilton Depression Rating Scale over a 12-week treatment period.
  • The study included 160 adolescents meeting ICD-10 diagnostic criteria for moderate depression with suicidal ideation.

Anxiety symptoms showed significantly greater improvement in the combination therapy group compared to monotherapy.

  • The proportion of patients with severe anxiety was 1.25% in the combination group versus 11.25% in the monotherapy group.
  • The difference was statistically significant (p = 0.008).
  • Anxiety was assessed using the Hamilton Anxiety Rating Scale.
  • Suicidal ideation was also tracked using the Beck Scale for Suicide Ideation-Chinese Version.

Serum inflammatory markers were significantly reduced in the combination therapy group compared to the monotherapy group.

  • IL-6 levels were significantly lower in the combination group (p = 0.007).
  • IL-1β levels were significantly lower in the combination group (p = 0.002).
  • TNF-α levels were significantly lower in the combination group (p = 0.005).
  • CRP levels were significantly lower in the combination group (p = 0.001).
  • Peripheral blood inflammatory ratios measured included platelet-to-lymphocyte, neutrophil-to-lymphocyte, and monocyte-to-lymphocyte ratios.

IL-6 and CRP demonstrated strong positive correlations with depression scores.

  • IL-6 and CRP showed positive correlations with depression scores with r values ranging from 0.35 to 0.39.
  • These correlations were described as 'strong positive correlations' by the authors.
  • Depression scores were measured using the Hamilton Depression Rating Scale.

Current selective serotonin reuptake inhibitor monotherapy treatments for adolescent depression are limited in efficacy.

  • Monotherapy with SSRIs has an efficacy rate of approximately 50%–60% according to the authors.
  • SSRIs are also limited by delayed onset of action.
  • Major depressive disorder with suicidal ideation in adolescents is described as 'a disabling psychiatric disorder.'
  • The study was designed to address these limitations by evaluating a combination approach informed by gut-brain axis theory.

This was a retrospective cohort study design comparing sertraline monotherapy to sertraline combined with Bacillus subtilis probiotic preparation in adolescents.

  • 160 adolescents were included and categorized into either monotherapy (sertraline) or combination therapy (sertraline + probiotics) groups.
  • Participants met ICD-10 diagnostic criteria for moderate depression with suicidal ideation.
  • The treatment period was 12 weeks.
  • The probiotic used was specifically a Bacillus subtilis probiotic preparation.

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Citation

Zhang L, Zhao D, Huang J, Liu S, Xu N. (2026). Efficacy of Sertraline Combined With Intestinal Microecological Therapy in Adolescents With Moderate Depression and Suicidal Ideation and Its Effects on Serum Inflammatory Factors.. Actas espanolas de psiquiatria. https://doi.org/10.62641/aep.v54i1.2127