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| 1 | Role of abnormal lipid metabolism in development,progression,diagnosis and therapy of pancreatic cancer显示文摘There is growing evidence that metabolic alterations play an important role in cancer development and progression.The metabolism of cancer cells is reprogrammed in order to support their rapid proliferation.Elevated fatty acid synthesis is one of the most important aberrations of cancer cell metabolism.An enhancement of fatty acids synthesis is required both for carcinogenesis and cancer cell survival,as inhibition of key lipogenic enzymes slows down the growth of tumor cells and impairs their survival.Based on the data that serum fatty acid synthase(FASN),also known as oncoantigen 519,is elevated in patients with certain types of cancer,its serum level was proposed as a marker of neoplasia.This review aims to demonstrate the changes in lipid metabolism and other metabolic processes associated with lipid metabolism in pancreatic ductal adenocarcinoma(PDAC),the most common pancreatic neoplasm,characterized by high mortality.We also addressed the influence of some oncogenic factors and tumor suppressors on pancreatic cancer cell metabolism.Additionally the review discusses the potential role of elevated lipid synthesis in diagnosis and treatment of pancreatic cancer.In particular,FASN is a viable candidate for indicator of pathologic state,marker of neoplasia,as well as,pharmacological treatment target in pancreatic cancer.Recent research showed that,in addition to lipogenesis,certain cancer cells can use fatty acids from circulation,derived from diet(chylomicrons),synthesized in liver,or released from adipose tissue for their growth.Thus,the interactions between de novo lipogenesis and uptake of fatty acids from circulation by PDAC cells require further investigation. | Julian Swierczynski Areta Hebanowska Tomasz Sledzinski | 2014 | World Journal of Gastroenterology2014，20，9： | 16 |
| 2 | 急性胰腺炎患者肠道微生态及其与病情严重程度的相关性:一项前瞻性横断面研究显示文摘目的探究急性胰腺炎(acute pancreatitis,AP)患者肠道菌群变化特征及其与病情严重程度的相关性。方法本研究为前瞻性横断面研究。研究对象为2018年6月至2022年1月北京协和医院AP患者和健康志愿者。收集两组临床资料及粪便标本,对其肠道菌群16S rRNA进行DNA测序并进行生物信息学分析。比较两组肠道菌群差异,并采用受试者操作特征曲线分析肠道菌群与AP病情严重程度的相关性。结果共入选符合纳入和排除标准的AP患者60例、健康志愿者20名。AP患者中,轻症、中度重症、重症患者各20例,住院期间转入ICU 22例,未转入ICU 38例。α多样性分析显示,AP患者肠道菌群Shannon指数低于健康志愿者(P<0.05);β多样性分析显示,AP患者肠道菌群结构异于健康志愿者。在门、科、属、种水平的比较中,AP患者与健康志愿者肠道菌群分布均存在差异。线性判别分析结果显示,包括大肠志贺菌属、肠球菌属和肠球菌科在内的多个菌群在AP患者中呈优势分布,而布劳特氏菌属和双歧杆菌属等菌群在健康志愿者中呈优势分布。功能分析提示AP患者肠道菌群中多种氨基酸合成受阻,菌群致病性与迁移能力增强。ICU患者与非ICU患者的亚组分析亦可观察到类似变化,ICU患者肠球菌表达增多,拟杆菌表达降低。受试者操作特征曲线显示,基于表达差异菌种计算的疾病概率(probability of disease,POD)指数识别AP患者、转入ICU的AP患者的曲线下面积分别为0.996、0.743。结论AP患者肠道致病性菌群增多、有益菌减少。肠道菌群变化与AP病情严重程度相关,有望作为AP的新型生物标志物。 | 韩梓莹 宋锴 范正阳 宋晓 胡晓敏 吴东 | 2022 | 协和医学杂志2022，13，5： | 3 |
| 3 | 血浆游离氨基酸在重症急性胰腺炎肠内营养后的变化分析显示文摘目的探讨血浆中18种游离氨基酸在重症急性胰腺炎(SAP)患者肠内营养(EN)后的变化。方法入选27例SAP患者,随机分为肠外营养(PN)组(15例)和EN组(12例),入选15例健康人作为对照组。入选者在营养治疗前、治疗后10 d采空腹静脉血5 ml,采用氨基酸谱测定仪测定其血浆游离氨基酸的水平。结果营养治疗前,EN组和PN组患者血浆氨基酸水平均显著低于对照组,差异有统计学意义(P<0.05);EN组和PN组患者血浆氨基酸水平比较,差异无统计学意义(P>0.05)。营养治疗后,EN组较PN组患者血浆蛋氨酸、天冬氨酸、谷氨酰胺水平明显升高,苏氨酸水平明显降低,差异均有统计学意义(P<0.05)。营养治疗后,PN组组氨酸、精氨酸、脯氨酸和酪氨酸水平较治疗前明显升高,EN组亮氨酸、赖氨酸、蛋氨酸、组氨酸、精氨酸、脯氨酸水平较治疗前明显升高,差异均有统计学意义(P<0.05)。结论 EN能升高SPA患者血中某些游离氨基酸的水平,是治疗SAP有效的方法。 | 王德强 柴虎林 | 2012 | 中国全科医学2012，15，20： | 1 |
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