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auricularia polytricha and Flammulina velutipes ameliorate inflammation and modulate the gut microbiota via regulation of NF-κB and Keap1/Nrf2 signaling pathways on DSS-induced inflammatory bowel disease

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Food Bioscience 2022年第3期47卷 356-370页

作者： Ivan Stève Nguepi Tsopmejio Miao Ding Jiali Wei Cong Zhao Yu Jiang Yuting Li Hui Song School of Life Science Jilin Agricultural UniversityJilinPR China Department of Animal Biology and Physiology University of Yaoundé ICameroon Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi ChangchunPR China

Flammulina velutipes and auricularia polytricha are two popular dietary mushrooms,especially in the Northeast of China.They have revealed many pharmacological effects due to their bioactive compounds,but their possible mechanism of action involved in inflammation remains poorly known.Therefore,Inflammatory bowel disease(IBD)which is a chronic disease and progressive inflammation in the gastrointestinal tract were used to evaluate their anti-inflammatory and modulatory properties on the intestinal microbiota via the signaling pathways involved by oral administration of F.velutipes(FVE)and A.polytricha(APE).Mice were daily received 3%DSS in the drinking water followed by the daily administration of FVE and APE.The food consumption,weight variation and DAI score were assessed during the experiment and inflammatory parameters,mRNA and protein expressions to determine the possible signaling pathways involved,and the gut microbiota from the cecum by high-throughput sequencing.Data showed that APE and FVE improved clinical symptoms,inflammatory cytokines and oxidative markers.They also attenuated the mRNA and proteins expressions in colon tissue.Moreover,APE and FVE regulated DSS-induced intestinal dysbiosis and stimulated the SCFAs production.Overall,APE and FVE could improve DSS-induced IBD in mice suggesting that they represent novels therapeutic drugs and could be used as prebiotic to modulate the gut microbiota and preserve intestinal integrity.

关键词： Flammulina velutipes auricularia polytricha Inflammatory bowel disease Signaling pathways Intestinal microbiota

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Hypoglycemic polysaccharides from auricularia auricula and auricularia polytricha inhibit oxidative stress,NF-κB signaling and proinflammatory cytokine production in streptozotocin-induced diabetic mice

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Food Science and Human Wellness 2021年第1期10卷 87-93页

作者： Huan Xiang Dongxiao Sun-Waterhouse Chun Cui School of Food Science and Engineering South China University of TechnologyGuangzhou510640GuangdongChina Guangdong Weiwei Biotechnology Co. LTDGuangzhou510640GuangdongChina School of Chemical Sciences The University of AucklandPrivate Bag 92019AucklandNew Zealand

auricularia auricula(AA)and auricularia polytricha(AP)are popular edible fungi.This study successfully produced hypoglycemic polysaccharides from un-smashed or smashing and sieving(through a 10-mesh sieve)AA and AP(termed as AAP/AAP-10 and APP/APP-10)via scalable processes(water extraction,ethanolic precipitation and deproteinization).This is the first report to compare the effectiveness of AAP and APP in combating streptozotocin-induced oxidative stress and diabetes-related changes in mice(body weight,fasting blood glucose,serum insulin,proinflammatory mediator and cytokines,oxidative stress-related products,antioxidant enzymes).APP and AAP with different molecular weights and monosaccharide molar ratios could be therapeutic options for diabetes with a low dose(100 mg/kg/day)likely working better.At the same dose,APP generally performed more effective than AAP,and AAP-10/APP-10 seemed slightly more beneficial than AAP/APP.One mechanism underlying these antidiabetic functions might involve the NF-κB and associated signalling pathways.AP is cheaper than AA,thereby representing a favorable source of functional polysaccharides.

关键词： Polysaccharides auricularia auricula auricularia polytricha Hypoglycemic effect Oxidative stress

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Biosorption of Cu(Ⅱ) and Pb(Ⅱ) by auricularia polytricha

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 755-761页

作者： ZHANG Dan GAO Jianwei GAO Tingyan YING Yigao CHEN Hong Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041Sichuan China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

For searching biological material for heavy metal removal of waste-water, using macrofungus auricularia polytricha as biosorbent for Cu^2＋ and Pb^2＋ removal was investigated. After shaking and biosorbing Cu^2＋ and Pb^2＋ in solution by biosorbents, the filtrates were tested by AAS and the adsorbed quantity of Cu^2＋ and Pb^2＋ was calculated. The biosorbents were effective in removal of Cu^2＋ and Pb^2＋ on the biosorbents that showed a high- est value around pH 5-6. The biosorption rate of Cu^2＋ and Pb^2＋ on A. polytricha biomass decreased with increasing the initial concentration of Cu^2＋ and Pb^2＋ in the medium. The biosorption of Cu^2＋ and Pb^2＋ on the biomasses follows pseudo-second order kinetics. The determined maximum biosorption capacities presented by the fungus biomass were 3.34 and 13.03 mg·g^-1 dry weight for Cu^2＋ and Pb^2＋, respectively by the biosorption equilibrium with Langmuir adsorption isotherm. According to the whole data analysis in each experiment of studying Cu^2＋ and Pb^2＋ biosorption including condition factors and adsorption isotherm, the adsorbed capacity of Pb^2＋ by A. polytricha biomass was bigger than Cu^2＋. The biosorption by A. polytricha was most effective when pH 5-6. The biosorbents are suitable for low Cu^2＋ and Pb^2＋ concentration waste-water, especially for Pb^2＋ removal.

关键词： auricularia polytricha biosorption Pb^2＋ Cu^2＋ isotherm kinetic model

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光木耳(auricularia auricula)和毛木耳(auricularia polytricha)原生质体的形成和再生

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华中农业大学学报 1987年第2期 189-191页

作者：罗信昌华中农业大学植保系真菌研究室

目前原生质体融合技术正作为一种遗传基因高频重组的有效方法和遗传研究工具越来越广泛地受到国内外食用菌科学工作者的极大重视。要获得融合的成功,首先必须对细胞壁进行消化,获得大量的原生质体并使原生质体能高频率再生产生细胞壁。... 详细信息

目前原生质体融合技术正作为一种遗传基因高频重组的有效方法和遗传研究工具越来越广泛地受到国内外食用菌科学工作者的极大重视。要获得融合的成功,首先必须对细胞壁进行消化,获得大量的原生质体并使原生质体能高频率再生产生细胞壁。所以原生质体的形成和再生是原生质体融合技术中的重要一步。在本试验中,作者采用新生酶-Novozym234分离了光木耳和毛木耳的原生质体,并进行了再生。同时对原生质体的两种再生型进行了观察。

关键词：原生质体再生型光木耳 auricularia auricula auricularia polytricha 毛木耳

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