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磷酸化修饰组学揭示T2D iMyos细胞系多维度的信号缺陷网络表征肌肉胰岛素抵抗
PTMBio 2020-9-28 12:18
发布时间: 2020年9月3日 题目: A Cell-Autonomous Signature of Dysregulated Protein Phosphorylation Underlies Muscle Insulin Resistance in Type 2 Diabetes(细胞蛋白磷酸化水平的失调可揭示2型糖尿病的肌肉胰岛素抵抗) 期刊:Cell Metabolism 影响因子: 21.567 作者及单位 :美国哈佛医学院以及丹麦、瑞典等多国科学家 主要结论: 磷酸化组学检测展示了T2D iMyos中的多维度信号缺陷网络,为T2D细胞机制研究提供了新维度。 二型糖尿病 (type 2 diabetes, T2D) 是一种与遗传因素和环境因素均密切相关的复杂代谢性疾病,而胰岛素抵抗是其最重要的病理生理学特征之一。 胰岛素抵抗 通常指胰岛素受体或受体后缺陷导致的机体循环中生理量胰岛素不能发挥正常作用的现象。已有大量证据表明,T2D患者的后代(其中最终发展为T2D的人群)会在确诊为T2D之前很多年就存在胰岛素抵抗的现象,这更加说明胰岛素抵抗对于疾病发生发展的重要性。 胰岛素抵抗可以发生在机体的神经、心脏、血管、脂肪、肝脏及肌肉等多个器官,而 骨骼肌 是最先发生胰岛素抵抗的部位。尽管大家意识到骨骼肌胰岛素抵抗在T2D发展中的重要作用,但是目前对于其深层分子机制的了解仍不清晰,我们仍然无法判断它是细胞自主性信号缺陷的结果,抑或是多器官密切交叉所导致的系统性变化。 磷酸化修饰 在胰岛素分泌等糖尿病相关研究内容中已经得到了大量关注,但是其骨骼肌胰岛素抵抗中是否发挥作用仍然缺乏全面深入的探讨。 诱导多能干细胞 (iPSCs)拥有与胚胎干细胞一样的发育全能性,能分化成任何一种细胞,已经因其特殊性被应用到了诸多人类疾病的研究中,例如帕金森、先天性耳聋、肾脏疾病、眼系疾病等。作者此前已经通过特殊技术成功构建了具有胰岛素抵抗特征的iPSC细胞系,甚至由iPSC转化的骨骼肌成肌细胞系iMyos。这些材料的获得为深入研究胰岛素抵抗机制问题提供了便利,并排除了在机体中复杂环境所带来的其他干扰。 近日,来自美国哈佛医学院以及丹麦、瑞典等多国科学家联合在著名学术期刊 Cell Metabolism(IF=21.567) 上发表论文, 通过磷酸化修饰组学对二型糖尿病患者的骨骼肌胰岛素抵抗问题进行探讨。 作者除了发现诱导培养的T2D iMyos表现出了与人类疾病相似的多种缺陷以外,还通过磷酸化组学检测展示了T2D iMyos中的一个多维度的信号缺陷网络。 文献速读 1、T2D来源的iMyos表现出胰岛素抗性 作者分别用葡萄糖耐受健康人和二型糖尿病患者来源的iPSCs诱导转化为骨骼肌成肌细胞iMyos(各包括8个独立个体来源的样本)开展实验 (样本策略) 。通过一系列检测,作者发现T2D来源iMyos表现出与临床患者相似的生理缺陷现象,比如 胰岛素信号通路受损、葡萄糖摄取减少以及线粒体呼吸受损等 (图 1),充分证明了iMyos能够模拟真实T2D患者骨骼肌代谢特色。 图1 T2D来源iMyos映射出与患者相同的代谢特色 2、磷酸化组学揭示T2D来源iMyos中关键信号通路失调现象 为了从分子层面更全面深入的了解T2D患者胰岛素抗性的信号缺陷等问题,作者对共16组iMyos样本(8v8)分别进行了胰岛素刺激/不刺激之后的磷酸化组学检测 (质谱策略) 。所有样本中共定量到29,000多个磷酸化位点,其中1,172个位点出现显著的表达差异,且聚集为四个主要的由糖尿病以及胰岛素刺激形成的反应组别(图 2)。在胰岛素反应类别中, 共有125个磷酸化位点在刺激后发生表达量上调 ,其中包含了一些知名的参与到胰岛素信号通路的激酶,比如AKT、mTOR等。而糖尿病并没有引起整个胰岛素反应网络的破坏,而是 特异性的影响到某些上游(IRS1, IRS2)和下游(AKT, mTOR)信号通路部分 。 图2 磷酸化组学揭示T2D来源iMyos关键信号通路失调现象 3、磷酸化对T2D来源iMyos关键细胞功能的干扰 通过对磷酸化组学数据的分析,作者不仅发现磷酸化对糖尿病相关重要信号通路的影响,还发现其在一些关键细胞功能中的重要参与作用。相对于对照组,T2D来源iMyos中分别有361和371个位点表现出磷酸化水平显著下调和上调。 下调蛋白主要集中于mRNA剪切、囊泡运输、基因转录等生物学过程中 ,包括一些关键剪切体SF3B2等均发生磷酸化水平下调。而 上调蛋白主要富集到信号转导、染色质重塑等过程中 ,包含一些知名的酰基转移酶KAT7、HDAC1和甲基转移酶SETD1A均发生修饰水平上调(图 3)。 图3 磷酸化对T2D来源的iMyos关键细胞功能的干扰 综上所述,磷酸化在T2D中的参与体现在精准性与基础性两个方面。一方面对胰岛素相关信号通路进行精准调控,一方面对细胞基础生物学过程如mRNA代谢和剪切、染色质重塑、囊泡运输等进行调控(图 4)。 图4 磷酸化对T2D的全面调控 小结与展望 本文基于高分辨质谱的磷酸化修饰组学探讨了二型糖尿病患者的骨骼肌胰岛素抵抗问题。研究发现 诱导培养的T2D iMyos映射出与人类疾病相似的多种缺陷 外,包括胰岛素信号的转变、胰岛素刺激导致的葡萄糖摄取减少以及线粒体氧化降低等。更加令人瞩目的是,该研究展示出了 T2D iMyos中的一个多维度的信号缺陷网络 。这个复杂网络不仅包括了传统认知的典型胰岛素信号级联问题,还意外展现出了Rho-GTPase调节、mRNA剪接和处理、囊泡运输、基因转录和染色质重塑等过程。 这种细胞自主性的蛋白质磷酸化网络失调现象为研究T2D深层细胞机制问题打开了一个新的维度。 参考文献: 1,Thiago M. Batista et al., 2020, A Cell-Autonomous Signature ofDysregulated Protein Phosphorylation Underlies Muscle Insulin Resistance inType 2 Diabetes, Cell Metabolism. 本文由 景杰学术 团队报道,欢迎转发到朋友圈。如有转载、投稿、等其他合作需求,请文章下方留言,或添加微信ptm-market咨询。
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[转载]2型糖尿病可以逆转(English with 部分中文/updated)
zuojun 2019-7-23 05:35
2 Nurses In Tennessee Preach 'Diabetes Reversal' https://www.npr.org/sections/health-shots/2019/07/22/733748382/2-nurses-in-tennessee-preach-diabetes-reversal Chains, saws and old logging equipment litter the back field of Wendy Norris' family farm, near the county seat of Altamont, Tenn. Norris used to be part of the local timber industry, and the rusted tools are relics from a time when health woes didn't hold her back from felling hardwoods. I was nine months pregnant, Norris says. Me and my husband stayed about 10 or 15 miles in the middle of nowhere, in a tent, for a long time. Those outdoor adventures are just a memory now. A few years ago, as Norris turned 40, her feet started going numb. She first assumed it was from standing all day at her job at a nursing home. 几年前,当诺里斯 40 岁时,她的脚开始麻木了。她首先认为这是因为她整天在养老院工作。 But it wasn't, she recalls now. It was that neuropathy, where my sugar was high and I didn't know it. Norris had developed Type 2 diabetes. “ 但事实并非如此, ” 她现在回忆道。 “ 那是神经病,我的 糖很高,我不知道。 ” 诺里斯患上了 2 型糖尿病。 Grundy County, Tenn., has a long list of public health challenges, and Type 2 diabetes tops the list. The county is stunningly scenic; it also has one of the lowest life expectancy rates in the region. 田纳西州格伦迪县有很多公共卫生挑战,而 2 型糖尿病名列榜首。该县风景优美 ; 它也是该地区预期寿命最低的国家之一。 Norris was relatively active. She also enjoyed sodas, sweets and frozen dinners. Meanwhile, diabetes runs in her family. So, when her diabetes diagnosis came down, her doctor prescribed insulin shots and told her to watch what she ate. 诺里斯相对活跃。她还喜欢汽水,糖果和冷冻晚餐。与此同时,糖尿病在她的家庭中运行因此,当她的糖尿病诊断结束时,她的医生开了胰岛素注射液并告诉她要看她吃的东西。 You're sitting there thinking, 'Well, what does that mean?' Norris says. Type 2 diabetes can be reversed with weight loss and exercise; but research shows that people need lots of help to achieve control of blood sugar with just a change in diet and lifestyle, and they rarely get enough support. It's easier for doctors and patients to rely primarily on medication. 2 型糖尿病可以通过减肥和运动来逆转 ; 但是研究表明,人们需要很多帮助才能通过改变饮食和生活方式来控制血糖,而且他们很少得到足够的支持。医生和患者主要依靠药物治疗更容易。 Norris says trying to overhaul her diet by herself was confusing and difficult. And when things didn't change, the doctor just kept increasing her dosage of insulin. 诺里斯说,试图彻底改变她的饮食习惯是令人困惑和困难的。当事情没有改变时,医生只是不断增加她的胰岛素剂量。 But then Norris lost her health insurance. The injectable insulin cost her hundreds of dollars a month — money she simply didn't have. 但后来诺里斯失去了健康保险。可注射的胰岛素每个月花费数百美元 - 她根本没有钱。 Fortunately, that's when a couple of nurses who were members of her community stepped in to help — not with cash, but with crucial support of a different sort. 幸运的是,当她的社区成员中的几位护士介入帮助时 - 不是用现金,而是提供不同类型的重要支持。 At the nonprofit Beersheba Springs Medical Clinic , a nonprofit clinic founded in 2010 to bring free or low-cost health care to the area, Norris was introduced to an alternative approach to taming her Type 2 diabetes — and the prospect of reversing her diagnosis altogether. Retired nurses on a mission 有使命感的退役护士 In a former parsonage near the clinic, Karen Wickham ladles out lentil stew as a handful of participants in the evening's health education session arrive. She and her husband, Steve, are white-haired, semiretired nurses who have dedicated their lives to what they call diabetes reversal. They offer six-week seminars to Type 2 patients like Norris, who has also brought along her father and daughter. It's our purpose, Karen says. Our purpose in life is to try to help make a difference — first in our community. With slide presentations, the Wickhams explain the difference between sucrose and glucose and the science behind the fact that foods like potatoes spike blood sugar, while sweet potatoes don't. They preach eating as much fiber as a stomach can stand and dropping almost every kind of sweetened beverage. Then they demonstrate ways to burn all those calories. On one evening, Steve invents the Beersheba Boogie on the spot, asking participants to raise their knees and pump their fists in place. All these people will have to find a way to get active at home, because there's no gym anywhere close. There's not a proper grocery store nearby either, so healthy cooking can become a real chore. These communitywide obstacles reveal why it can be a struggle for people to maintain their health in rural America. But the Wickhams are working to overcome those barriers. Steve calls out for applause as participants share their latest health stats — Her blood sugar is going down! Give her a hand. If it sounds like a revival meeting, it kind of is. Steve and Karen Wickham feel compelled to do this work as part of their Christian faith as Seventh-day Adventists — members of a denomination known for a focus on health. I think God holds us responsible for living in the middle of this people and doing nothing, Steve says. The Wickhams originally moved to Grundy County to take care of ailing parents, and they ended up building their dream home there. They planted vast orchards, vegetable gardens and berry patches to help satisfy their vegetarian diet — a diet common among Seventh-day Adventists. But once settled in their mountain retreat, the Wickhams grew disturbed by Grundy County's national health ranking: The county of 13,000 people ranks as the least healthy in Tennessee, by one annual measure . Grundy County has the shortest life expectancy in the state and an elevated rate of diabetes ( 16 percent of adults ), which can eventually result in blindness, kidney failure and amputations. I had taken care of diabetic patients for so long, and I knew the progression, Karen says. If you truly want the people to get better, you have to treat it with lifestyle interventions. Overhauling one's diet and activity level is the obvious answer, but those changes are hard to start and even harder to maintain. Nobody, actually, will make all of the lifestyle changes that we recommend, Steve says. But if you're making the kind of choices that lead you to a healthier lifestyle, then you get better. “ 实际上,没有人会改变我们推荐的所有生活方式, ” 史蒂夫说。 “ 但如果你做出那种能让你过上更健康生活方式的选择,那么你就会变得更好。 ” A more hopeful message 一个更有希望的信息 Along with their lifestyle counseling, the Wickhams always give a disclaimer, advising people to consult with their doctors about their condition and its treatment. They also acknowledge that their seminars are not yet evidence based or backed by peer-reviewed scientific literature. It's one of the reasons they haven't been able to get government grants to fund their program directly. 随着他们的生活方式咨询,Wickhams总是给出免责声明,建议人们咨询他们的医生,了解他们的病情和治疗方法。他们还承认,他们的研讨会尚未“以证据为基础”或得到同行评审的科学文献的支持。这是他们无法获得政府补助直接资助其计划的原因之一。 But there are studies showing that people with blood sugar levels in the prediabetes range can get back to normal blood sugar by losing 5% of their body weight. 但是有研究表明,血糖水平在“前驱糖尿病”范围内的人可以通过减掉5%的体重来恢复正常的血糖。 And weight loss and exercise have already been shown to lower hemoglobin A1c levels, which physicians use to monitor a patient's blood sugar over two to three months. In addition, new research from Dr. Roy Taylor of Newcastle University in the United Kingdom shows promise for true remission. 减肥和运动已被证明可降低血红蛋白 A1c 水平,医生用这两个月来监测患者的血糖。 此外,英国纽卡斯尔大学的 Roy Taylor 博士的新研究显示了真正缓解的希望。 There just hasn't been the information about the possibility of reversing diabetes, Taylor says. Most studies do show Type 2 diabetes, in most patients, marching in pretty much one direction. But Taylor says those studies also involve people who continue to gain weight, which is typical among diabetics. 大多数研究确实显示 2 型糖尿病,在大多数患者中,几乎朝着一个方向前进。但泰勒表示,这些研究还涉及那些继续体重增加的人,这在糖尿病患者中很常见。 Doctors tell their patients, 'You've got a lifelong condition. We know it's going to steadily get worse.' Then they turn around, and their patients aren't losing weight or doing exercise, but they've given them this utterly depressing message, he says. “ 医生告诉他们的病人, ' 你已经终生了。我们知道它会逐渐恶化。 ' 然后他们转过身来,他们的病人没有减肥或做运动,但他们给了他们这种完全令人沮丧的信息, “ 他说。 评论:翻译得不太好。意思是医生给糖尿病人“定了死刑”。其实,病人还是可以通过减肥、运动改变血糖的。 Taylor's research finds that if a patient loses 30 pounds or so, diabetes can be reversed in its early stages. Taylor prescribes a strict liquid diet and limited exercise — at first — so as not to stimulate the appetite. People with Type 2 diabetes need to lose fat from the liver and pancreas. 泰勒的研究发现,如果患者减掉 30 磅左右,糖尿病可以在早期阶段逆转。泰勒规定了严格的流质饮食和有限的运动 - 起初 - 以免刺激食欲。患有 2 型糖尿病的人需要从肝脏和胰腺中减掉脂肪。 评论:不是所有人都能减掉 30磅的!应该看看原文。 Ultimately, Taylor hopes better nutrition will become the preferred response to high blood sugar in the next decade. 最终,泰勒希望更好的营养将成为未来十年高血糖的首选。 I think the main headwinds are just conceptual ones — of scientists and doctors believing this is an irreversible condition because of what we've seen, he says. Even the American Diabetes Association has been changing its views . The advocacy group has a new position on Type 2 reversal: If a patient wishes to aim for remission of type 2 diabetes, particularly within 6 years of diagnosis, evidence-based weight management programs are often successful. 甚至美国糖尿病协会也在改变其观点。倡导小组对2型逆转提出了新的立场:“如果患者希望瞄准2型糖尿病的缓解,特别是在诊断后的6年内,基于证据的体重管理计划通常是成功的。” John Buse , chief of endocrinology at the University of North Carolina medical school, helped write the American Diabetes Association's revised guidance. We've known, literally since the 17th century, that diet is the key to managing diabetes, he says. But it's hard to write a prescription for lifestyle change. 北卡罗来纳大学医学院内分泌科主任JohnBuse帮助编写了美国糖尿病协会的修订指南。“从17世纪开始,我们就知道,饮食是控制糖尿病的关键,”他说。 但是很难为生活方式改变开处方。 Doctors don't have the time to do it well, so we have often used the sort of short shrift, he says. 'Eat less carbohydrates and walk every day.' That has basically no impact. “医生没有时间做得好,所以我们经常使用那种短暂的吝啬,”他说。“'少吃碳水化合物,每天走路。'这根本没有影响。“ 评论:'少吃碳水化合物,每天走路。'这根本没有影响? The Wickhams are doing their part to add to the scientific data, tracking the blood sugar of the participants in their program. And even the anecdotal, short-term evidence they've gathered so far is resonating far beyond Grundy County, and they've been traveling more and more lately. The couple just sold their retirement home so they can say yes to all the invitations they've received, mostly through Seventh-day Adventist groups, to present their program to other communities around the United States. Meanwhile, Wendy Norris says the prospect of turning back Type 2 diabetes already has changed her entire outlook on health. 与此同时,WendyNorris表示,扭转2型糖尿病的前景已经改变了她对健康的整体看法。 I felt like I was stuck having to take three or four shots a day the rest of my life, she says. I've got it down to one already. 她说:“我觉得我一生都不得不每天打3-4针。”“我已经只需要打1针了。” 评论:(机器翻译不过关,必须介入。)文章的头、尾不错,中间有点乱。 This story is part of NPR's reporting partnership with Nashville Public Radio and Kaiser Health News.
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[转载]Medicalxpress:肠道细菌代谢与肥胖及2型糖尿病的关系
fqng1008 2017-7-4 15:03
克利夫兰诊所的研究人员发现了 肠道细菌代谢 与 肥胖 之间的生物学联系。该团队表明,阻止特定的肠道微生物途径可以预防肥胖和胰岛素抵抗,并导致脂肪组织变得更具代谢活性。该研究最近在Cell Reports中发表。 研究团队由克利夫兰诊所莱纳研究所J. Mark Brown博士领导,研究了产生三甲胺氧化物(TMAO)的代谢途径,TMAO是一种在肠道细菌消化过程中产生的化学物质-胆碱,卵磷脂和肉碱-在动物产品中大量发现,如红肉、加工肉、蛋黄和肝脏。 布朗博士的同事Stanley Hazen,M.D.,Ph.D目前的研究表明,高水平的TMAO与严重心血管事件(如心脏病发作和中风)的风险相关。 由于心血管疾病和肥胖密切相关,该团队假设TMAO也可能参与导致肥胖的代谢途径。他们专注于称为含黄素的单加氧酶3(FMO3)的宿主酶,其将TMAO转化为其活性形式。他们发现,即使喂食高脂肪,高热量的饮食,也可以保护缺少或失活的FMO3基因的小鼠免于肥胖。此外,FMO3阴性小鼠显示与米色或棕色脂肪细胞相关的基因的表达更高,其比白色脂肪细胞更具代谢活性。 该研究证实,435例患者中高水平的TMAO与 2 型糖尿病 发病率较高有关。 “ 肥胖、糖尿病和心血管疾病是密切相关的。虽然微生物已被证明影响心血管疾病,但还没有具体的证据表明肠道细菌究竟如何影响肥胖, ” 布朗说。这些发现揭示了一种可能的方式来操纵微生物组合治疗,以对抗我们的肥胖和糖尿病流行。 布朗是莱纳研究所细胞与分子医学系科学人员的成员。Rebecca Schugar博士是Cell Reports出版的第一作者。 Lerner 细胞与分子医学系主任Hazen博士说: “ 鉴于肠道微生物驱动的TMAO途径与人类疾病的众多强烈联系,这项工作对于肠道微生物本身的药物发现工作具有广泛的影响。 “ 然而,需要进一步的工作来更好地了解整个途径以及TMA,FMO3,TMAO与人类健康之间的联系。 ” TMAO 是胆碱,卵磷脂和肉碱的细菌消化的副产物,在红肉、加工肉和肝脏等动物产品中特别丰富的营养物质。Jan Bleeksma博士此前曾将TMAO与心血管疾病的风险联系起来,并已表明它可以成为预测未来心脏病发作、卒中和多发病人死亡的有力工具。
个人分类: 临床研习|1192 次阅读|0 个评论
我们的论文在《生物化学与生物物理进展》上发表了
热度 3 rongqiaohe 2013-9-26 10:45
非常高兴,我们的论文能够在《生物化学与生物物理进展》(Prog Biochem Biophys)上发表! 自1815年法国科学家发现糖尿病人尿中的甜味物质是葡萄糖,198年以来,全世界的同行均以葡萄糖及其相关领域为糖尿病研究的重点。今天,我们与北京大学第一医院的王学美教授合作,发现了2型糖尿病患者尿中含有大量的核糖,且较正常对照显著异常升高。该工作提示我们的同行,应该重视核糖与糖尿病关系的研究。 【 潜在的理论意义 】2型糖尿病不但具有葡萄糖代谢慢性失调,而且可能具有核糖代谢失调。 【 潜在的社会和应用价值 】请国内外(包括欧美)同行重复我们的实验,如果能够重复出与我们相同的结果,为了全世界千千万万个糖尿病人健康安全,建议相关医学领域纠正和废除糖尿病“口服核糖”的治疗方法 (Steinberg T, Poucher R L, Sarin R K, et al. Oral administration of D-Ribose in diabetes mellitus. Diabetes, 1970, 19(1): 11-16)。 论文地址: http://www.pibb.ac.cn/pibbcn/ch/reader/view_abstract.aspx?file_no=20130341flag=1 感谢《中国科学报》报道了我们的研究结果! http://news.sciencenet.cn/sbhtmlnews/2013/9/278223.shtm 感谢相关科技网络报道和转载了我们的研究结果。 http://scitech.people.com.cn/n/2013/0925/c1007-23029780.html http://news.ebioe.com/show/125763.htm http://big5.china.com.cn/gate/big5/jx.china.com.cn/keyan/yaowen/2013/0925/14555.html http://tech.hexun.com/2013-09-25/158288283.html http://article.wn.com/view/WNAT95a3d38f5c9ea95a8309efcfd0d77fb3/#/related_news http://news.jschina.com.cn/system/2013/09/25/018716166.shtml http://www.biotech.org.cn/information/112089 http://www.lninfo.gov.cn/kjzx/show.php?itemid=437395 还有许多科技相关的网报道了我们的研究工作。。。在此一并感谢。
个人分类: 浅谈|4597 次阅读|8 个评论
食疗可能治愈糖尿病
热度 3 fs007 2011-9-8 11:40
个人分类: 食疗祛病|7582 次阅读|6 个评论
[转载]2型糖尿病患者患癌风险增高
Helmholtz 2011-7-22 18:00
2010 年 5 月 20 日 德国癌症研究中心的科研人员就糖尿病和癌症的关联风险问题发表了世界上最大规模研究的结果。 2 型糖尿病患者的患癌风险对 24 种癌症有增加。最明显的是肝癌和胰腺癌。相反,糖尿病患者患前列腺癌的则显然较少。 癌症与糖尿病 - 这两种疾病是基于相同的风险因素吗?或者糖尿病会触发在体内某些能诱发癌症或促进癌症的因素?目前尚不清楚为什么糖尿病患者往往比其他没有这种代谢病的人得癌症的比例更高。 为了准确地搞清楚糖尿病对哪些癌症有何影响,德国癌症研究中心的卡里.海明基与瑞典及美国的同事一起开展了一项迄今最大规模的 2 型糖尿病患者癌症风险研究。这个项目调查了 12 万 5126 位瑞典公民,他们都曾因为 2 型糖尿病而到医院就诊。这些流行病学家对这些病人与普通瑞典的患癌情况进行了对比。 这么大的 研究规模第一次容许量化糖尿病与各种少见癌症的关系。研究人员发现, 2 型糖尿病患者患 24 种癌症的风险因子较高。风险增加最高的是胰腺癌与肝癌: 2 型糖尿病患者要比常人得病风险高 6 倍和 4.25 倍。流行病学家们发现的其他患病风险增高一倍以上还有肾癌、甲状腺癌、食道癌、小肠癌以及神经系统方面的癌症。 这项研究还证实, 2 型糖尿病患者明显较少患前列腺癌。这项结果对那些具有家族性代谢病特征的糖尿病患者尤为明显。亲属中糖尿病患者越多,个人患前列腺癌的风险越低。“究竟原因何在我们只能猜测”,流行病学家海明基说。“也许是因为男性糖尿病患者的性激素水平较低的原因。” 2 型糖尿病患者的某些癌症发病率表现得较高,是否有可能仅仅只因为他们在医院的例行检查中碰巧更早地发现了癌症呢?为了排除这个因素,研究人员又分析了这些人在医院检查之后,分别在一至五年里出现癌症的例数有多少。结果发现,除了患癌的风险略有增加,但总体趋势是不变了。 在工业化国家现有 2% 至 20% 的民众身患 2 型糖尿病。这种代谢病因此是公共健康领域的最大挑战之一。 2 型糖尿病的特征,过去常常误称为 “ 老糖 ” ,表现为组织的胰岛素抵抗。这意味细胞对胰岛素信号不响应,不能把血糖减下去。 研究人员把瑞典自 1964 年至 2007 年所有的出院登记报告进行了评估分析。这些数据合并了瑞典国家家庭癌症登记系统,后者记录了自 1958 年以来该国所有的癌症病例。由于这套癌症登记系统又与家庭血源关系系统是关联的,因此可以追踪病人的父母以及兄弟姐妹是否身患癌症。 KARI HEMMINKI, XINJUN LI, JAN SUNDQUIST und KRISTINA SUNDQUIST: Risk of Cancer Following Hospitalization for Type 2 Diabetes. The Oncologist 2010, DOI: 10.1634/theoncologist.2009-0300 本新闻稿中的图片可从因特网下载 : www.dkfz.de/de/presse/pressemitteilungen/2010/images/Zucker.jpg 图片 来源 : Nicole Schuster, Deutsches Krebsforschungszentrum -------------------------------------------------- ------------------------------ 德国癌症研究中心 ( DKFZ ) 是德国最大的生物医学科研机构 , 是德国亥姆霍兹联合会的成员单位。在 2000 多名工作人员中包括 850 位科研人员,他们研究癌症的发病机制并归纳总结导致癌症的危险因素。他们为开发新的癌症预防、诊断和治疗方法提供了新的可靠的基础。此外,癌症信息服务中心的员工还向病人及其家属、以及其他对癌症感兴趣的民众提供相关信息。该中心的经费百分之九十来自联邦教育和研究部,百分之十来自巴登符腾堡州
个人分类: 2010年科技新闻|2264 次阅读|0 个评论
科研创新:2型糖尿病患者下肢血管病变的超声检查对预防下肢坏疽
xupeiyang 2010-12-23 09:45
2010479 国内外相关文献对比分析结论: 国内外检索可见有关应用多普勒超声检查分别对糖尿病患者下肢血管病变进行诊断 和疗效评价 的相关研究报道,但未见有关彩色多普勒超声成像对糖尿病患者下肢血管病变的早期诊断、疗效观察及预防下肢坏疽发生的临床指导意义的相关研究报道;未见有关应用美国 Disonic 公司生产的 Spectral VS 及日立 6000 型多普勒超声诊断仪,应用彩色多普勒成像对糖尿病患者下肢动脉病变状况进行全面评价的相关研究报道。 该课题主要特点与创新点为: 1 、该研究采用美国 Disonic 公司生产的 Spectral VS 及日立 6000 型全面评价糖尿病下肢动脉病变的状况。 技术要点为:超声束与血流夹角 60 ,观察股动脉、腘动脉、胫后及足背动脉,沿解剖位置以二维超声显示血管壁、内膜、腔内情况,再以 CDFI (彩色多普勒血流量成像)观察血管腔内的血流、管腔情况,以 PW 与血管中取样,以获取最大的血流频谱。观察频谱的形态,并测定血管内径 (D) 、峰值流速 (Vmax) 、血流量 (Vol) 及频谱宽度 (W) ,并计算动脉狭窄程度。主要结局观察指标:①两组患者的血液流变学。② 动脉粥样硬化斑块的发生情况。③ 糖尿病病程与下肢动脉病变 (LEADDP) 发生情况。 2 、该研究指出彩色多普勒超声成像对糖尿病患者下肢血管病变的早期诊断、疗效观察及预防下肢坏疽的发生有重要的临床指导意义。
个人分类: 创新评论|3911 次阅读|0 个评论
研究热点:2型糖尿病糖化血红蛋白(HbA1c)研究 国际文献分析
xupeiyang 2010-9-19 09:40
最新研究论文: http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(09)61969-3/fulltext The Lancet, Volume 375, Issue 9713 , Pages 481 - 489, 6 February 2010 Previous Article | Next Article doi:10.1016/S0140-6736(09)61969-3 Cite or Link Using DOI Published Online: 27 January 2010 Survival as a function of HbA 1c in people with type 2 diabetes: a retrospective cohort study http://www.gopubmed.org/web/gopubmed/1?WEB0u3zanznlu4ziI9I1I00h001000j100200010 8,930 documents semantically analyzed 1 2 Top Years Publications 2009 930 2008 873 2007 764 2006 670 2005 604 2010 584 2004 526 2003 435 2002 424 2001 393 2000 351 1999 281 1998 254 1997 241 1995 209 1996 202 1993 182 1994 163 1992 148 1991 118 1 2 1 2 3 ... 6 Top Countries Publications USA 1,945 Japan 881 United Kingdom 631 Germany 506 Italy 477 France 268 Netherlands 253 Sweden 212 China 209 Australia 182 Spain 181 Denmark 174 India 141 Turkey 137 Canada 137 Finland 115 South Korea 112 Austria 109 Taiwan 101 Belgium 78 1 2 3 ... 6 1 2 3 ... 57 Top Cities Publications Tokyo 191 Boston 118 London 114 Dallas 85 Seoul, South Korea 78 Osaka 73 Amsterdam 70 New York City 68 Munich 65 San Antonio 62 Wien 61 Los Angeles 61 Oxford, United Kingdom 60 Indianapolis 60 Paris 59 Hong Kong, Hong Kong 56 Aarhus 52 Padua 52 Taipei 50 Shanghai, China 50 1 2 3 ... 57 1 2 3 ... 62 Top Journals Publications Diabetes Care 932 Diabetes Res Clin Pract 531 Diabet Med 452 Diabetologia 243 Diabetes Obes Metab 177 Diabetes 168 Metabolism 161 J Diabetes Complications 141 Diabetes Metab 110 Mmw Fortschr Med 103 J Clin Endocrinol Metab 94 Acta Diabetol 92 Diabetes Technol Ther 91 Clin Ther 89 Exp Clin Endocrinol Diabetes 79 Diabetes Educ 78 Horm Metab Res 73 Curr Med Res Opin 68 Endocr Pract 59 Endocr J 58 1 2 3 ... 62 1 2 3 ... 498 Top Terms Publications Humans 8,441 Diabetes Mellitus, Type 2 8,433 Hemoglobin A, Glycosylated 6,995 Patients 6,857 Middle Aged 6,061 Blood Glucose 4,879 Glucose 4,288 Insulin 3,963 Aged 3,824 Insulin 3,817 Diabetes Mellitus 3,770 Adult 3,693 receptor binding 3,572 Hypoglycemic Agents 3,075 Fasting 2,675 Evaluation Studies as Topic 2,166 Hemoglobins 2,148 Metabolism 2,022 metabolic process 2,019 Blood Pressure 1,868 1 2 3 ... 498 1 2 3 ... 1605 Top Authors Publications Hanefeld M 38 Heine R 37 Groop L 37 Holman R 35 Raskin P 34 Kawamori R 34 Mohan V 33 Holst J 30 Chan J 29 Rosenstock J 29 Pagano G 29 Schernthaner G 29 Defronzo R 28 Phillips L 28 Fedele D 27 Wolffenbuttel B 25 Monnier L 25 Parving H 25 Cockram C 25 Ziemer D 25 1 2 3 ... 1605
个人分类: 代谢病学|2849 次阅读|0 个评论
研究热点分析:胰岛素应用与2型糖尿病的死亡率
xupeiyang 2010-3-29 15:12
分析平台 http://www.gopubmed.org/web/gopubmed/1?WEB0lk3678z9vqtqI3I1I00f01000j10040001rl 检索策略 Insulin and mortality and type 2 diabetes 分析结果 1,720 documents semantically analyzed Top Years Publications 2007 155 2009 139 2006 130 2005 118 2008 117 2003 112 2004 101 1996 78 2001 76 2002 72 1998 72 2000 70 1999 69 1997 69 1995 56 1993 43 1994 37 2010 34 1991 32 1992 28 1 2 1 2 3 4 Top Countries Publications USA 476 United Kingdom 157 Italy 99 Germany 98 Japan 76 France 57 Netherlands 52 Australia 49 Sweden 48 Canada 47 Denmark 42 Finland 38 Spain 29 Israel 27 Austria 25 Switzerland 24 China 22 Belgium 21 India 17 Brazil 15 1 2 3 4 1 2 3 ... 23 Top Cities Publications London 55 Boston 39 New York 28 Kuopio 23 San Antonio 21 Stockholm 18 Paris 18 Los Angeles 17 Wien 16 Philadelphia 16 St. Louis 15 Milan 14 Laizhou 14 San Diego 13 Lige 13 ōita 13 Melbourne 13 Copenhagen 13 Amsterdam 13 Aarhus 13 1 2 3 ... 23 1 2 3 ... 31 Top Journals Publications Diabetes Care 84 Diabetologia 66 Diabetic Med 46 Diabetes Res Clin Pr 38 Diabetes 27 J Diabetes Complicat 26 Diabetes Obes Metab 23 Metabolism 21 Diabetes Metab 18 J Intern Med 17 Am J Cardiol 17 Circulation 16 Diabetes Metab Res Rev 15 Exp Clin Endocrinol Diabetes 15 Cochrane Database Syst Rev 14 J Am Coll Cardiol 14 Am J Med 13 Arch Intern Med 13 Lancet 12 Int J Cardiol 11 1 2 3 ... 31 1 2 3 ... 204 Top Terms Publications Humans 1,603 Diabetes Mellitus, Type 2 1,497 Mortality 1,448 insulin 1,358 Insulin 1,291 receptor binding 1,185 Patients 1,183 Diabetes Mellitus 936 Risk Factors 773 Morbidity 710 Glucose 690 Insulin Resistance 656 Middle Aged 628 Cardiovascular Diseases 594 Metabolism 568 metabolic process 568 Hypoglycemic Agents 513 Adult 497 Aged 494 Blood Glucose 492 1 2 3 ... 204 1 2 3 ... 271 Top Authors Publications unknown 34 Fuller J 16 Laakso M 14 Haffner S 13 Parving H 12 Zimmet P 12 Hanefeld M 11 Scheen A 10 Pyrl K 10 Stehouwer C 9 Saikawa T 9 Klein R 9 Niskanen L 9 Uusitupa M 9 Gall M 9 Jarrett R 9 Heine R 8 Malmberg K 8 Keen H 8 Stevens L 8 1 2 3 ... 271
个人分类: 热点前沿|4910 次阅读|0 个评论
研究热点分析: 2型糖尿病的药物治疗 1967 - 2010年
xupeiyang 2010-3-28 10:49
重要信息分析结果链接: http://sciencewatch.com/ana/st/diabetes2/rfmap2/ Research Front Maps Research front maps are diagrammatic representations of the core papers comprising each front. They are selected from the current Research Front set that are relevant to the featured special topic. The title for this Research Front Map is DRUG TREATMENT FOR TYPE 2 DIABETES , containing 32 core papers. Source dates: 1999-February 28, 2009 (first bimonthly period 2009). 分析平台: http://www.gopubmed.org/web/gopubmed/4?WEB0ho77j05jvminIiI1I00f01000j10040001rl 检索策略: DRUG TREATMENT and TYPE 2 DIABETES 分析结果: 20,782 documents semantically analyzed 1 2 Top Years Publications 2008 2,139 2007 2,069 2009 2,017 2006 1,832 2005 1,649 2004 1,439 2003 1,268 2002 1,169 2001 941 2000 809 1999 727 1998 577 1997 507 1996 384 1995 359 1993 336 1994 303 1990 276 1992 275 1991 275 1 2 1 2 3 ... 6 Top Countries Publications USA 5,239 Japan 1,404 United Kingdom 1,385 Germany 1,058 Italy 900 France 652 China 540 Canada 511 Netherlands 435 Denmark 411 Sweden 394 Australia 381 Spain 377 India 288 Switzerland 243 Belgium 237 Finland 212 South Korea 197 Turkey 165 Israel 162 1 2 3 ... 6 1 2 3 ... 72 Top Cities Publications Boston 259 London 258 Tokyo 232 New York 228 San Diego 184 Dallas 170 Paris 169 Toronto 147 Indianapolis 140 Chicago 137 Munich 132 Birmingham 131 San Antonio 130 Los Angeles 126 Copenhagen 125 Helsinki 123 Lige 121 Laizhou 119 Osaka 119 Stockholm 118 1 2 3 ... 72 1 2 3 ... 108 Top Journals Publications Diabetes Care 1,275 Diabetic Med 482 Diabetes 425 Diabetes Res Clin Pr 392 Diabetologia 381 Diabetes Obes Metab 363 Mmw Fortschr Med 285 Metabolism 266 Clin Ther 217 Diabetes Metab 196 J Clin Endocr Metab 191 Curr Med Res Opin 173 Lancet 168 Am J Med 166 Diabetes Technol Ther 147 Drugs 134 Nippon Rinsho 128 Horm Metab Res 126 J Diabetes Complicat 126 Ann Intern Med 122 1 2 3 ... 108 1 2 3 ... 782 Top Terms Publications Diabetes Mellitus, Type 2 18,808 Humans 18,617 Patients 12,459 Insulin 10,392 Hypoglycemic Agents 9,760 insulin 9,480 receptor binding 9,294 Middle Aged 8,478 Glucose 7,971 Diabetes Mellitus 7,687 Blood Glucose 7,312 Aged 5,747 Adult 5,243 Pharmaceutical Preparations 4,635 Metabolism 4,442 metabolic process 4,429 Animals 3,724 Hemoglobin A, Glycosylated 3,458 Insulin Resistance 3,344 Evaluation Studies as Topic 3,236 1 2 3 ... 782
个人分类: 热点前沿|1709 次阅读|0 个评论
胡盛寿胡春松:预防“心患”与管理“患心”
hucs 2009-11-28 08:50
预防心患与管理患心 中国医科院阜外心血管病医院 胡盛寿 教授 南昌大学医学院 胡春松 硕士 原载《健康报》 2008 年 11 月 21 日
个人分类: 生活点滴|2939 次阅读|0 个评论

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