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牡蛎低分子活性肽对人肺腺癌A549细胞形态与超微结构变化的影响 总被引:4,自引:0,他引:4
以牡蛎(Saccostrea cucullata)体内分离提取出的牡蛎天然低分子活性多肽(BPO-L,Bioactive Peptides of Oyster in Peak L)为效应物,观察研究BPO-L对人肺腺癌细胞形态和超微结构的影响.光镜观察显示经0.1mg/mL BPO-L处理后的A549细胞体积增大,趋于扁平铺展状态,细胞核质比例变小,核仁数量减少.透射电镜观察显示经0.1mg/mL BPO-L处理后的A549细胞核形态较规则,细胞核内异染色质减少,常染色质增多;细胞质内线粒体数量增多,结构较为一致,高尔基体呈较为典型发达状态,并出现粗面内质网增多和多聚核糖体减少等变化.结果表明,BPO-L能有效改变人肺腺癌细胞的恶性形态与超微结构特征,对肺癌细胞具有一定的诱导分化作用. 相似文献
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通过建立长期递增负荷训练、力竭训练游泳运动模型,探讨牡蛎提取液对长期训练小鼠运动耐力、血液生化指标影响.研究表明:运动训练的小鼠比安静状态下的小鼠血红蛋白水平显著降低,血中乳酸、肌酸激酶和尿素氮的水平显著升高;而补充牡蛎提取液可使运动训练小鼠血红蛋白的水平显著升高,血中乳酸、肌酸激酶和尿素氮的水平显著下降,并可使小鼠力竭运动时间明显延长.因此,牡蛎提取液可提高机体的造血功能和循环系统功能,增强机体的运动能力. 相似文献
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Christian P. Kubicek Monika Komon-Zelazowska Irina S. Druzhinina 《浙江大学学报(自然科学英文版)》2008,9(10):753-763
Hypocrea/Trichoderma is a genus of soil-borne or wood-decaying fungi containing members important to mankind as producers of industrial enzymes and biocontrol agents against plant pathogens, but also as opportunistic pathogens of immunocompromised humans and animals, while others can cause damage to cultivated mushroom. With the recent advent of a reliable, BarCode-aided identification system for all known taxa of Trichoderma and Hypocrea, it became now possible to study some of the biological fundamentals of the diversity in this fungal genus in more detail. In this article, we will therefore review recent progress in (1) the understanding of the geographic distribution of individual taxa; (2) mechanisms of speciation leading to development of mushroom diseases and facultative human mycoses; and (3) the possible correlation of specific traits of secondary metabolism and molecular phylogeny. 相似文献
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The effect of dried oyster mushroom (Pleurotus ostreatus) on cholesterol (C) content in serum, in lipoproteins and in liver, and on the activity of 3-hydroxy-3-methylglutaryl CoA (HMG-CoA) reductase in liver microsomes, was studied in male rats (strain Wistar, initial body weight 75 g) fed on low-cholesterol (9 mg/100 g) and high-cholesterol (0.3%) diets. Addition of 5% oyster mushroom to both diets reduced significantly the C-content in serum (by 30%), in very-low- and low-density lipoproteins (in a 11 ratio to the decrease of total serum C) and in liver (by 50%), as well as the activity of HMG-CoA reductase (by more than 30%). 相似文献
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利用差热分析(DTA)技术对青海高寒草甸蘑菇菌影响下土壤有机-无机复合体的研究结果表明:蘑菇圈上表层土壤吸湿水吸热峰峰值温度由对照的60℃提高到68℃,土壤有机质放热峰峰值温度由328℃提高到335℃,深层土壤(10 ̄20cm)该两项指标的变化不显著。土壤各种有机-无机复合体及土壤矿物的吸热峰或放热峰峰值,峰高都显示出与对照有一定的差异。 相似文献
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火焰原子吸收光谱法测定香菇中7种元素的含量 总被引:2,自引:0,他引:2
香菇是一种高蛋白、低脂肪的保健食品.它含有多种氨基酸,丰富的维生素以及人体不可缺少的宏、微量元素.具有很高的药用价值.我们利用原子吸收光谱法对鲜香菇中的7种宏量、微量元素进行了含量测定.其中K、Na、Fe、Mg、Ca含量高,Mn、Cu含量也比较丰富. 相似文献
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几种贵州食用菌矿质成分分析 总被引:1,自引:0,他引:1
余丹凤 《贵州大学学报(自然科学版)》2007,24(4):429-430,440
通过X射线荧光光谱法测定五种贵州食用菌的矿质元素,结果表明五种食用菌都含有多种矿物质元素,其中猴头菇对钾的富集能力最强,且对锰的吸收波稍高于其它菌;牛肝菌对铁、锌的富集能力最强;在猴头菇、茶树菇、竹荪中测出钡;在灰树菇、茶树菇中测出钌;在美味牛肝菌中测出钛;在五种测试菌中都含有铝。 相似文献
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本文简述粤北食用菌栽培中原材料利用率低、栽培品种较少,栽培方式较单一、规模小与效益低等现状,试图从因地制宜充分利用本地栽培原材料、栽培多种菇类、扩大规模与加工增值、加强技术培训与指导等方面提出改进措施。 相似文献
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