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<p>In this study, we assessed the therapeutic effects of <i>Bifidobacterium animalis</i> subsp. <i>lactis</i> GOLDGUT-BB69 (BB69) on diarrhea in mice by monitoring diarrhea scores, intestinal histopathology, detecting cytokine and protein expression, and intestinal microbial composition and metabolism. The results showed that BB69 significantly reduced the disease symptoms of diarrhea in mice, attenuated the pathological features of the intestine, decrease the protein expression in the TLR4/NF-κB signaling pathway, reduced intestinal inflammation, lowered intestinal permeability, and significantly increased the expression of mucin and tight junction proteins (ZO-1, occludin), which repaired intestinal mucosal injuries and enhanced the intestinal barrier function. In addition, BB69 significantly reduced the gut dysbiosis of mice with diarrhea by increasing the abundance and diversity of intestinal microorganisms and the content of short-chain fatty acids (SCFAs). Our findings suggest that BB69 can act as a functional probiotic, alleviating diarrhea-related symptoms by inhibiting the inflammatory response and promoting the restoration of the intestinal mucosal barrier and intestinal flora.</p>

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Bifidobacterium animalis subsp. lactis GOLDGUT-BB69 Counteracts Diarrhea in Mice by Alleviating Inflammation, Enhancing Intestinal Barrier Functions, and Regulating Intestinal Microbiota

  • 期刊论文

  • 发表日期：

    2025年11月28日

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  • Meng Zhao,
  • Chunjing Li,
  • Zixun Fang,
  • Qi Yi,
  • Xuezhou Ke,
  • Xia Luo,
  • Lian Zhou,
  • Qing Wang

摘要

In this study, we assessed the therapeutic effects of Bifidobacterium animalis subsp. lactis GOLDGUT-BB69 (BB69) on diarrhea in mice by monitoring diarrhea scores, intestinal histopathology, detecting cytokine and protein expression, and intestinal microbial composition and metabolism. The results showed that BB69 significantly reduced the disease symptoms of diarrhea in mice, attenuated the pathological features of the intestine, decrease the protein expression in the TLR4/NF-κB signaling pathway, reduced intestinal inflammation, lowered intestinal permeability, and significantly increased the expression of mucin and tight junction proteins (ZO-1, occludin), which repaired intestinal mucosal injuries and enhanced the intestinal barrier function. In addition, BB69 significantly reduced the gut dysbiosis of mice with diarrhea by increasing the abundance and diversity of intestinal microorganisms and the content of short-chain fatty acids (SCFAs). Our findings suggest that BB69 can act as a functional probiotic, alleviating diarrhea-related symptoms by inhibiting the inflammatory response and promoting the restoration of the intestinal mucosal barrier and intestinal flora.