AI Article Synopsis
- Portal hypertension in liver cirrhosis causes severe complications, worsened by oxidative stress and gut dysbiosis; the study investigates the potential benefits of fructooligosaccharides, known for their antioxidant effects.
- Sprague-Dawley rats with induced cirrhosis were treated with fructooligosaccharides for four weeks, resulting in decreased hepatic vascular resistance and oxidative stress markers, while showing no adverse effects on gut flora or overall locomotor function.
- The findings suggest that fructooligosaccharides may improve vascular function in cirrhotic conditions by alleviating oxidative stress and gut microbiome imbalances.
Article Abstract
Background: Portal hypertension leads to lethal complications in liver cirrhosis. Oxidative stress induced hepatic vascular dysfunction, which exaggerated vasoconstriction and increases hepatic vascular resistance (HVR). Gut dysbiosis further exacerbates portal hypertension. Fructooligosaccharides are prebiotics with potent antioxidant effect. This study aimed to evaluate the roles of fructooligosaccharides in portal hypertension-related vascular dysregulation and gut microbiome.
Methods: Sprague-Dawley rats received bile duct ligation to induce cirrhosis or sham operation as controls. The rats then randomly received fructooligosaccharides or vehicle for 4 weeks. Experiments were performed on the 29th day after operations.
Results: Fructooligosaccharides did not affect portal pressure. Interestingly, fructooligosaccharides significantly attenuated HVR (p = .03). Malondialdehyde, an oxidative stress marker, reduced significantly in the liver in fructooligosaccharides-treated group. In addition, superoxide dismutase and trolox equivalent antioxidant capacity increased in the treatment group. On the other hand, vasodilatation-related protein expressions, GTPCH and phospho-eNOS, enhanced significantly. Fructooligosaccharides had no adverse vasodilatation effects on splanchnic vascular system or porto-systemic collateral systems. Locomotor function was not affected by fructooligosaccharides. Faecal microbiota analysis showed that Negativicutes, Selenomonadales and Lactobacillus salivarius reduced in the fructooligosaccharides-treated group.
Conclusion: In conclusion, fructooligosaccharides attenuate hepatic vascular dysfunction in cirrhotic rats via at least partly, ameliorate of dysbiosis and oxidative stress.
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| http://dx.doi.org/10.1111/eci.14287 | DOI Listing |
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