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Latilactobacillus sakei CNTA 173 Reduces Fat Mass by Modulating Sphingolipid Metabolism in Diet-Induced Obese Wistar Rats.

  • 2025-10-30
  • Journal of agricultural and food chemistry 73(45)
    • Ignacio Goyache
    • Lorena Valdes-Varela
    • Raquel Virto
    • Iñigo Clemente-Larramendi
    • Miguel López-Yoldi
    • Ana Romo-Hualde
    • Ana Gloria Gil
    • Fermín I Milagro
    • Paula Aranaz

Study Design

Population
diet-induced obese Wistar rats
Methods
investigate the physiological and metabolic effects of Latilactobacillus sakei CNTA 173 (10^9 CFU/day); biochemical, 16S microbiota, untargeted metabolomic, and gene expression analyses were performed, as well as an in vivo toxicological study to demonstrate its safety
  • Rigorous Journal
The use of probiotics with health-promoting activities has emerged as a strategy to combat specific hallmarks of obesity, such as excessive fat accumulation and associated inflammation. Here, we investigate the physiological and metabolic effects of Latilactobacillus sakei CNTA 173 (109 CFU/day) in diet-induced obese Wistar rats. Biochemical, 16S microbiota, untargeted metabolomic, and gene expression analyses were performed, as well as an in vivo toxicological study to demonstrate its safety. Probiotic-supplemented rats showed reduced adiposity, an improved inflammatory marker profile, and enhanced glucose tolerance, partly by modulating fecal microbiota composition and regulating the production of novel plasma metabolites, specifically sphingolipid-derived mediators such as ceramides. Moreover, no adverse effects were observed in an in vivo toxicity evaluation of this strain in Wistar rats. Our results unveil the fat-reducing and anti-inflammatory effects of L. sakei CNTA 173 and point out the potential use of this probiotic for the prevention of obesity-related disturbances.

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