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Primitive Form of Bony Fish Unveiled
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《Bulletin of the Chinese Academy of Sciences》 2006年第2期81-82,共2页
With over 50,000 species, Osteichthyans, or bony fish,accounts for 98% of the present-day vertebrates. Bony fish falls into two groups:actine-pterygians, meaning ray-finned bony fish, and sarcopterygians, meaning lob... With over 50,000 species, Osteichthyans, or bony fish,accounts for 98% of the present-day vertebrates. Bony fish falls into two groups:actine-pterygians, meaning ray-finned bony fish, and sarcopterygians, meaning lobe-finned bony fish. The huge morphotype difference of the two catagories cast doubts on research into the origin and evolution of bony fish. 展开更多
关键词 多骨鱼 基本形 起源 演化
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魟鱼软骨多糖对小鼠恶性黑色素瘤的抑制作用及对Laminin5γ2、HIF-α表达的影响 被引量:1
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作者 王冠 郭斌 《中药药理与临床》 CAS CSCD 北大核心 2015年第3期70-73,共4页
目的:研究魟鱼软骨多糖对小鼠黑色素瘤的抑制作用及对Laminin-5γ2、HIF-α表达的影响。方法:体外培养B16小鼠黑色素瘤细胞,MTT法测定魟鱼软骨多糖不同剂量组对黑色素瘤细胞与基质之间粘附的影响,将培养的B16细胞悬液接种于C57BL/6小鼠... 目的:研究魟鱼软骨多糖对小鼠黑色素瘤的抑制作用及对Laminin-5γ2、HIF-α表达的影响。方法:体外培养B16小鼠黑色素瘤细胞,MTT法测定魟鱼软骨多糖不同剂量组对黑色素瘤细胞与基质之间粘附的影响,将培养的B16细胞悬液接种于C57BL/6小鼠右侧腋下部位,建立肿瘤模型。将实验分为空白对照组、魟鱼软骨多糖高、中、低剂量(700mg/kg、300mg/kg、100mg/kg)组、环磷酰胺(60mg/kg)组,观察肿瘤生长情况并计算原发瘤抑制率;采用Western blot方法检测Laminin-5γ2、HIF-α蛋白的表达,采用RT-PCR方法检测Laminin-5γ2mRNA、HIF-αmRNA的表达。结果:应用魟鱼软骨多糖100、20、4、0.8mg/L,黑色素瘤细胞于基质间的粘附受到抑制,分别为16.67%、11.90%、9.52%、7.14%。小鼠原发瘤抑制率与空白对照租比较有显著性差异,魟鱼软骨多糖100、300、700mg/kg和环磷酰胺组抑癌率分别为14.77%,31.48%,44.55%;与空白对照组比较,魟鱼软骨多糖各剂量组随着药物浓度的升高,Laminin-5γ2、HIF-α蛋白表达受到抑制,Laminin-5γ2、HIF-α的基因表达显著降低。结论:魟鱼软骨多糖能够在一定程度上抑制小鼠黑色素瘤移植瘤的生长,可能与其减少肿瘤中Laminin-5γ2、HIF-α蛋白表达有关,Laminin-5γ2、HIF-α有望成为抗癌治疗的新靶点。 展开更多
关键词 多糖 恶性黑色素移植瘤 Laminin-5γ2 HIF-α VM
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魟鱼软骨多糖对小鼠恶性黑色素移植瘤血管生成拟态及PI3K表达的影响 被引量:3
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作者 申洪波 郭斌 《中药药理与临床》 CSCD 北大核心 2017年第4期63-66,共4页
目的:探讨魟鱼软骨多糖(Ray cartilage glycosaminoglycans,RCG)对小鼠恶性黑色素瘤模型中肿瘤和血管生成拟态的抑制作用及对肿瘤组织中磷脂酰肌醇3-激酶蛋白(PI3K)表达水平的影响。方法:将体外培养的B16小鼠黑色素瘤细胞接种于C57BL/6... 目的:探讨魟鱼软骨多糖(Ray cartilage glycosaminoglycans,RCG)对小鼠恶性黑色素瘤模型中肿瘤和血管生成拟态的抑制作用及对肿瘤组织中磷脂酰肌醇3-激酶蛋白(PI3K)表达水平的影响。方法:将体外培养的B16小鼠黑色素瘤细胞接种于C57BL/6小鼠右腋下部复制肿瘤模型,将40只SPF级小鼠随机分为空白对照组(生理盐水)、环磷酰胺(CTX,60 mg/kg)组与魟鱼软骨多糖(600、300、150 mg/kg)组,观察肿瘤生长情况,计算抑瘤率;采用CD31/PAS双重染色检测魟鱼软骨多糖对肿瘤血管生成拟态计数的影响,Western Blot法测定PI3K表达变化,RT-PCR法测定PI3K基因的表达变化。结果:与空白对照组相比较,魟鱼软骨多糖的不同剂量组都对小鼠黑色素瘤的瘤重具有一定的抑制作用,且600mg/kg剂量的魟鱼软骨多糖最明显,CD31/PAS双重染色结果显示600mg/kg魟鱼软骨多糖组对血管生成生成拟态有较强的的抑制作用,Western Blot和RT-PCR结果表明随着魟鱼软骨多糖药物浓度的升高,PI3K蛋白表达水平逐渐明显降低,基因表达水平逐步明显降低,其中600mg/kg魟鱼软骨多糖组抑制作用最强。结论:魟鱼软骨多糖具有影响小鼠黑色素移植瘤和血管生成拟态生成的作用,并且可能与降低PI3K蛋白的表达有关。 展开更多
关键词 多糖 恶性黑色素移植瘤 磷脂酰肌醇3-激酶 血管生成拟态
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A new iron free treatment with oral fish cartilage polysaccharide for iron deficiency chronic anemia in inflammatory bowel diseases:A pilot study 被引量:3
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作者 Andrea Belluzzi Giulia Roda +5 位作者 Francesca Tonon Antonio Soleti Alessandra Caponi Anna Tuci Aldo Roda Enrico Roda 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第10期1575-1578,共4页
AIM: To investigate the effect of a new oral preparation, highly concentrated in fish cartilage, in a group of inflammatory bowel diseases (IBD) patients with chronic iron deficient anemia. METHODS: In an open lab... AIM: To investigate the effect of a new oral preparation, highly concentrated in fish cartilage, in a group of inflammatory bowel diseases (IBD) patients with chronic iron deficient anemia. METHODS: In an open label pilot study, we supplemented a group of 25 patients (11 with Crohn's disease and 14 with ulcerative colitis) in stable clinical conditions and chronic anemia with a food supplement which does not contain iron but contains a standardized fraction of fish cartilage glycosaminoglycans and a mixture of antioxidants (Captafer Medestea, Turin, Italy). Patients received 500 mg, twice a day during meals, for at least 4 mo. Patients were suggested to maintain their alimentary habit. At time 0 and after 2 and 4 too, emocrome, sideremia and ferritin were examined. Paired data were analyzed with Student's t test. RESULTS: Three patients relapsed during the study (2 in the 3^rd too, 1 in the 4^th too), two patients were lost to follow up and two patients dropped out (1 for orticaria, 1 for gastric burning). Of the remaining 18 patients, levels of serum iron started to rapidly increase within the 2^nd mo of treatment, P 〈 0.05), whereas serum ferritin and hemoglobin needed a longer period to significantly improve their serum levels (too 4) P 〈 0.05. The product was safe, easy to administer and well tolerated by patients. CONCLUSION: These data suggest a potential new treatment for IBD patients with iron deficiency chronic anemia and warrant further larger controlled studies. 展开更多
关键词 Ulcerative colitis Crohn's disease ANEMIA Fish cartilage Iron deficiency
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周末“大餐”
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作者 董冰清 《中学生天地(初中综合版)(A版)》 2002年第4期23-23,共1页
每到星期天,便有一顿加量不加价的周末“大餐”等着我。本周又是4道经典老菜。No.1 此菜名目“麻辣多骨鱼”,乃数学沈老师精心炮制。用料:拐弯抹角解方程6题,量多不深考卷一张。
关键词 周末 多骨鱼 解方程 老师 加量 炮制 数学 经典 加价 考卷
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