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Cecal metabolome fingerprint in a rat model of decompression sickness with neurological disorders

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  • معلومة اضافية
    • Contributors:
      Guieu, régis; Hopital d'instruction des armées Sainte-Anne [Toulon] (HIA); Université de Toulon (UTLN); Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN); Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Institut de Recherche Biomédicale des Armées (IRBA); Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA)
    • بيانات النشر:
      Nature Publishing Group, 2020.
    • الموضوع:
      2020
    • نبذة مختصرة :
      Massive bubble formation after diving can lead to decompression sickness (DCS), which can result in neurological disorders. We demonstrated that hydrogen production from intestinal fermentation could exacerbate DCS in rats fed with a standard diet. The aim of this study is to identify a fecal metabolomic signature that may result from the effects of a provocative hyperbaric exposure. The fecal metabolome was studied in two groups of rats previously fed with maize or soy in order to account for diet effects. 64 animals, weighing 379.0_20.2 g on the day of the dive, were exposed to the hyperbaric protocol. The rats were separated into two groups: 32 fed with maize (Div MAIZE) and 32 fed with soy (Div SOY). Gut fermentation before the dive was estimated by measuring exhaled hydrogen. Following hyperbaric exposure, we assessed for signs of DCS. Blood was analyzed to assay inflammatory cytokines. Conventional and ChemRICH approaches helped the metabolomic interpretation of the cecal content. The effect of the diet is very marked at the metabolomic level, a little less in the blood tests, without this appearing strictly in the clinic status. Nevertheless, 37 of the 184 metabolites analyzed are linked to clinical status. 35 over-expressed compounds let suggest less intestinal absorption, possibly accompanied by an alteration of the gut microbial community, in DCS. The decrease in another metabolite suggests hepatic impairment. This spectral difference of the ceca metabolomes deserves to be studied in order to check if it corresponds to functional microbial particularities.
    • File Description:
      application/pdf
    • ISSN:
      2045-2322
    • الرقم المعرف:
      10.1038/s41598-020-73033-z
    • الرقم المعرف:
      10.1038/s41598-020-73033-z⟩
    • Rights:
      OPEN
    • الرقم المعرف:
      edsair.doi.dedup.....d1d580623d8d781b9e98420ff642bbe0