4.7 Article

Positive effect of ethanol-induced Lactococcus lactis on alcohol metabolism in mice

Journal

FOOD SCIENCE AND HUMAN WELLNESS
Volume 11, Issue 5, Pages 1183-1190

Publisher

KEAI PUBLISHING LTD
DOI: 10.1016/j.fshw.2022.04.016

Keywords

Ethanol stress; Intracellular extracts; Alcohol dehydrogenase; Alcohol metabolism

Funding

  1. National Natural Science Foundation of China [81870093]
  2. Special Subject Funding of Zhengzhou University
  3. Natural Science Foundation of Henan Province for Outstanding Youth [202300410365]
  4. Research Project of People's Liberation Army [BX115C007, BFP20C006]

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Exposure to environmental stresses enhances the adaptability of bacteria and up-regulates the expression of oxidative stress-related genes and antioxidant enzymes. This study evaluated the effects of untreated and ethanol-induced Lactococcus lactis intracellular extracts on alcohol metabolism in mice. The results showed that ethanol-induced intracellular extracts enhanced alcohol metabolism in mice and had potential benefits on liver health.
It is well known that exposure to environmental stresses could enhance the adaptability of bacteria and up-regulate the expression of a variety of oxidative stress-related genes and antioxidant enzymes. It is unclear whether the adaptability of microorganisms formed naturally in special environments could transfer to other organisms. The study aimed to evaluate the effects of untreated and ethanol-induced Lactococcus lactis intracellular extracts (U-IE and E-IE) on alcohol metabolism in mice. The positive effects of E-IE on alcohol metabolism in mice were revealed by the enhanced latency of loss of righting reflex (LORR), the reduced duration of LORR, the decrease of blood alcohol concentration, as well as the elevation of alcohol dehydrogenase (ADH) activities in the stomach and liver tissues. Furthermore, the potential benefits of E-IE on the liver were evaluated by biochemical parameters including the activities of serum transaminase, the levels of antioxidant enzymes, and the pathological changes of liver tissue. The present work put forward a new point that appropriate ethanol stress could enhance the intracellular ADH activity of L. lactis, and its intracellular extracts could continue to enhance alcohol metabolism in mice. (c) 2022 Beijing Academy of Food Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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