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<p>Metabolic syndrome (MetS), an intricate condition exemplified by obesity, dyslipidemia, insulin resistance, hypertension and liver disease, which is increasingly linked to gut malfunctions and often accompanied by chronic low-grade inflammation. <i>Dioscorea</i> species or yam, are tuberous staple foods in most parts of Africa and Asia. Many species of this plant are traditionally used both as food and as remedies for various chronic disorders. The goal of this study was to perform the pre-clinical evaluation of dioscin-rich extract of <i>Dioscorea floribunda</i> (<i>Dio-FE</i>) against obesity induced-MetS in experimental mice. Aqueous (<i>Dio-FA</i>), hydro-alcoholic (<i>Dio-FHA</i>) and ethanolic (<i>Dio-FE</i>), extracts were prepared from tubers of <i>Dioscorea floribunda.</i> These extracts were subjected to understand their safety and pro-inflammatory cytokines inhibitory potential in cells. <i>Dio-FE</i>, the most potent extract, was further subjected for chemical signature using HPLC method. We further demonstrated the pharmacological role of dioscin, a phytoconstituent in <i>Dio-FE</i> extract against the inflammation in peritoneal macrophages, fat deposition in adipocytes and FFA-induced hepatic steatosis by a significant reduction in intracellular lipid accumulation, TNF-α, and NF-κB protein expression in liver cells. We also examined pharmacological potential of <i>Dio-FE</i> against obesity-induced MetS in C57BL/6 mice model. The in-vitro findings illustrated that <i>Dio-FE</i> was the most potent against inflammation. HPLC of <i>Dio-FE</i> showed the presence of dioscin as a bioactive phytosteroid. The experimental animal study showed that <i>Dio-FE</i>, significantly improved clinically relevant metabolic parameters, production of short-chain fatty acids (SCFAs), preventing leaky gut and also reducing the production of pro-inflammatory cytokines. These findings revealed that <i>Dio-FE</i>, an extract from tuberous staple foods improved obesity, insulin resistance, gut barrier function and liver metabolic parameters associated with MetS through modulation of the low-grade inflammation. These results provide a basis for future clinical investigations of <i>Dio-FE</i> as in addressing MetS.</p>

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Dioscin-rich extract of Dioscorea floribunda ameliorates metabolic syndrome by improving inflammation-mediated gut, adipose and hepatic dysfunctions: a pre-clinical study

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Sumati Sen,
  • Aashcharya Uddeshya Mishra,
  • Mridula Sahu,
  • Mausam Singh,
  • Nandini Pathak,
  • Anil Kumar Gupta,
  • Karuna Shanker,
  • Arvind Singh Negi,
  • Daya Nandan Mani,
  • Dnyaneshwar Umrao Bawankule

摘要

Metabolic syndrome (MetS), an intricate condition exemplified by obesity, dyslipidemia, insulin resistance, hypertension and liver disease, which is increasingly linked to gut malfunctions and often accompanied by chronic low-grade inflammation. Dioscorea species or yam, are tuberous staple foods in most parts of Africa and Asia. Many species of this plant are traditionally used both as food and as remedies for various chronic disorders. The goal of this study was to perform the pre-clinical evaluation of dioscin-rich extract of Dioscorea floribunda (Dio-FE) against obesity induced-MetS in experimental mice. Aqueous (Dio-FA), hydro-alcoholic (Dio-FHA) and ethanolic (Dio-FE), extracts were prepared from tubers of Dioscorea floribunda. These extracts were subjected to understand their safety and pro-inflammatory cytokines inhibitory potential in cells. Dio-FE, the most potent extract, was further subjected for chemical signature using HPLC method. We further demonstrated the pharmacological role of dioscin, a phytoconstituent in Dio-FE extract against the inflammation in peritoneal macrophages, fat deposition in adipocytes and FFA-induced hepatic steatosis by a significant reduction in intracellular lipid accumulation, TNF-α, and NF-κB protein expression in liver cells. We also examined pharmacological potential of Dio-FE against obesity-induced MetS in C57BL/6 mice model. The in-vitro findings illustrated that Dio-FE was the most potent against inflammation. HPLC of Dio-FE showed the presence of dioscin as a bioactive phytosteroid. The experimental animal study showed that Dio-FE, significantly improved clinically relevant metabolic parameters, production of short-chain fatty acids (SCFAs), preventing leaky gut and also reducing the production of pro-inflammatory cytokines. These findings revealed that Dio-FE, an extract from tuberous staple foods improved obesity, insulin resistance, gut barrier function and liver metabolic parameters associated with MetS through modulation of the low-grade inflammation. These results provide a basis for future clinical investigations of Dio-FE as in addressing MetS.