ArticleCurrent drug metabolism2026
Shenfu Decoction Extends Survival Time of Seawater-Induced Hypothermia in Rats: The Role of Metabolomics and Gut Microbiota.
Article in Current drug metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionShenfu decoction (SFD), a Traditional Chinese Medicine formula, is used in clinical emergencies. Its effects on seawater-induced hypothermia remain unclear. This study investigates the therapeutic mechanisms of SFD in improving the survival of hypothermic rats through metabolomics and gut microbiota analysis.
methodsHypothermia was induced in rats via seawater immersion. The chemical constituents of SFD were analyzed using ultra-performance liquid chromatography quadrupole timeof- flight mass spectrometry (UPLC-Q-TOF-MS). Survival time and rates of low-temperature water-immersed rats were assessed. Rat blood samples were obtained for analysis of hematologic parameters, electrolytes, hepatic and renal function, cardiac injury, and inflammatory cytokines. To investigate the potential mechanism underlying the survival-prolonging effect of SFD on seawater-immersed hypothermic rats, untargeted blood metabolomics and gut microbiota profiling were employed for preliminary screening.
resultsUPLC-Q-TOF-MS identified almost 50 compounds in SFD, and 1.35 g/kg SFD significantly extended the survival time of seawater-induced hypothermia rats by 6 hours. After hypothermic seawater immersion, the levels of red blood cells, hemoglobin, hematocrit, as well as serum calcium, phosphorus, blood urea nitrogen, alkaline phosphatase, total protein, cardiac troponin T, and interleukin-6 were significantly increased. However, pretreatment with 1.35 g/kg SFD in rats markedly decreased these parameters. The induction of hypothermic seawater immersion elevated blood glucose, and the administration of SFD exacerbated this increase in rats. Metabolomic analysis revealed elevated levels of valerenic acid and benzoylmesaconine in the SFD group, suggesting the restoration of metabolic homeostasis. This recovery was associated with modulation of the gut microbiota, notably an enhancement of beneficial genera, such as Enterococcus. DISCUSSION: The findings demonstrated that SFD significantly prolonged survival in a rat model of seawater-immersion hypothermia. The protective mechanism involved a dual action: mitigating hypothermia-induced organ damage and hematological disturbances, coupled with restoring metabolic homeostasis and modulating gut microbiota. SFD has been found to possess specifically enriched beneficial bacterial genera, linked to the activation of brown adipose tissue and non-shivering thermogenesis. This study has provided initial evidence for a gut microbiota-metabolism axis mediating SFD's protective effect.
conclusionSFD prolonged survival in rats with seawater-induced hypothermia, likely by enhancing thermogenesis and regulating lipid metabolism through gut microbiota changes. The findings highlighted the potential of SFD for hypothermia prevention; however, its exact underlying mechanisms require further validation.
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