酵母硒緩解黃曲霉毒素B1(AFB1)誘導(dǎo)的鶉肝臟損傷效果研究

打開文本圖片集

中圖分類號 S856 文獻標識碼A 文章編號 1007-7731（2025）09-0080-07

DOI號10.1637/j.cnki.issn1007-7731.2025.09.018

AbstractTo investigate the potential mitigating effectsof yeast selenium （Se-Y）onaflatoxin B1（AFB1）-induced liver injury inquails，2O-day-oldfemale yelow-feathered quails wererandomlydivided into four groups （1O quails per group）： control group （basic daily ration）， Se-Y group （ 0 . 8 m g / k g Se-Y），AFB1 group （ 3 0 μ g / k g B.W AFB1）， and Se-Y + （204號 AFB1 antagonism group 0 . 8 m g / k g Se B.W AFB1）. Liver histopathological damage，serum biochemical parameters，hepatic oxidative and antioxidant indices，andtheexpresion levelsof genes related tothe Nrf2 signaling pathway were assessed.The results showed that compared with the control group，AFB1 exposure caused the quail livers toexhibitsweling，yellowing，whitening，and fragility.Histopathologicalobservationsrevealed disorderedcell cord arrangements，hepatocyte sweling，and vacuolar degeneration.Serum aspartate aminotransferase （（AST）and alanine aminotransferase （ALT）activities were significantly increased.Inliver tissues，malondialdehyde （MDA）and hydrogen peroxide （ ）levels were markedly elevated， while glutathione peroxidase （GSH-Px）， total superoxide dismutase （TSOD），and catalase （CAT）activities were significantly reduced.Aditionaly，total antioxidantcapacity（T-AOC） was decreased. The expression of Nrf2 signaling pathway related genes （ N r f 2 ，HO-1， NQO-1， SOD1， CAT） was significantly suppressed. Compared with the AFB1 group，the Se-Y + AFB1 antagonism group alleviated AFB1-induced liver histopathological damage，reduced serum AST andALTactivities，and increased hepatic GSH-Px， CAT，and T-SOD activities as well as T-AOC levels.Furthermore，the expression of Nrf2 signaling pathwayrelated genes were upregulated.Inconclusion，AFB1 exposure induces oxidative stress in quail livers and suppresses the expressonof Nrf2 signaling pathway-relatedfactors，leading toliver injury.Se-Ycounteracts AFB1-induced hepatic oxidative damage by enhancing the expresson of Nrf2-related factors，though the precise mechanisms require further investigation.

KeywordsNrf2 signaling pathway; yeast-selenium; aflatoxin B1;quail liver; oxidative stress

鶴鶉在飼養(yǎng)過程中易受到飼料中霉菌毒素的污染，在眾多的霉菌毒素中，黃曲霉毒素B1（AFB1）的毒性較大，污染較為嚴重，AFB1通過采食進入機體后，會導(dǎo)致肝臟、腎臟出現(xiàn)損傷，同時伴隨著動物機體抗氧化能力的下降，誘導(dǎo)氧化應(yīng)激1]。（剩余10516字）