AJM:胰岛素诱导淀粉样变性可影响其降糖疗效

2014-05-28 佚名 丁香园

胰岛素诱导淀粉样变性是胰岛素治疗的一种罕见皮肤相关并发症。然而,胰岛素诱导淀粉样变性是否会影响胰岛素吸收,并从而影响糖尿病患者血糖控制仍不清楚。 为此,来自日本东京医科大学茨城医疗中心内分泌代谢科的Terumasa Nagase教授及其团队进行了一项研究,探讨胰岛素诱导淀粉样变性对糖尿病患者血糖控制、胰岛素需求量、以及胰岛素吸收的影响。该研究结果发表在2014年05月的The American

胰岛素诱导淀粉样变性是胰岛素治疗的一种罕见皮肤相关并发症。然而,胰岛素诱导淀粉样变性是否会影响胰岛素吸收,并从而影响糖尿病患者血糖控制仍不清楚。【原文下载

为此,来自日本东京医科大学茨城医疗中心内分泌代谢科的Terumasa Nagase教授及其团队进行了一项研究,探讨胰岛素诱导淀粉样变性对糖尿病患者血糖控制、胰岛素需求量、以及胰岛素吸收的影响。该研究结果发表在2014年05月的The American Journal of Medicine杂志上。

该研究中,Nagase教授等在茨城医疗中心招募了7例伴有胰岛素诱导淀粉样变性的糖尿病患者。Nagase教授等研究了这7例患者的临床特征和胰岛素治疗情况。而且,Nagase教授等给予其中4例患者分别在胰岛素诱导淀粉样变性部位和正常部位注射胰岛素,比较胰岛素注射后的血清胰岛素水平,从而确定该部位的胰岛素吸收情况。

该研究发现,当患者出现胰岛素诱导淀粉样变性时,其平均糖化血红蛋白水平为9.3%,平均每天胰岛素剂量为57单元。在改变注射部位,避开胰岛素诱导淀粉样变性部位后,患者血糖有所改善,而且,平均每天胰岛素剂量降到27单元。Nagase教授还发现胰岛素诱导淀粉样变性部位的胰岛素吸收是正常部位34%。

该研究提示,胰岛素诱导淀粉样变性可导致患者血糖控制欠佳,并可因胰岛素吸收受损而导致患者胰岛素需要量增加。

原始出处

Nagase T1, Iwaya K2, Iwaki Y3, Kotake F4, Uchida R5, Oh-I T6, Sekine H3, Miwa K3, Murakami S3, Odaka T3, Kure M3, Nemoto Y3, Noritake M3, Katsura Y3.Insulin-derived Amyloidosis and Poor Glycemic Control: A Case Series.Am J Med. 2014 May;【原文下载

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    2015-01-02 baoya
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    2014-05-30 huangdf

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糖尿病及其相关病因如胰岛素抵抗(IR)、肥胖、体力活动减少以及高热量摄入等均为痴呆的危险因素。在IR和糖尿病出现之前就发生了胰岛素样生长因子-1(IGF-1)水平的改变。IGF-1是一种由体力活动和低热量摄入诱发生成的激素。【原文下载】 该激素促进细胞生存,预防凋亡,并且调节海马神经再生。研究证实IGF-1在细胞培养和AD的转基因小鼠模型中均可抑制异常的tau蛋白磷酸化以及β淀粉样蛋白沉积。

Diabetologia:循环利钠肽可反映胰岛素敏感性

利钠肽是一种由心肌细胞产生的激素,可以影响心室重构、水电解质平稳和血管紧张性。流行病学研究显示2型糖尿病高危个体(肥胖和胰岛素抵抗)中,心房利钠肽和B型利钠肽水平较低。然而,利钠肽在这些疾病发展中的作用仍不清楚。 为此,来自美国麻省总医院糖尿病研究中心的Florez教授及其团队使用糖尿病预防计划(DPP)的数据进行了一项研究,探讨肥胖和胰岛素敏感性指标与N末端B型利钠肽原(NT-proBNP)之

JAMA:胰岛β细胞再生新方法

加利福尼亚大学研究人员的一项研究显示,新研发的阶梯式过程能将小鼠皮肤细胞转化为分泌胰岛素的β细胞。Hampton博士对此进行了报道,文章发表在2014年4月2日的The Journal of American Medical Association上。【原文下载】当研究人员采用独特的分子和重组因子混合物处理成纤维细胞时,这些细胞转化为内胚层样细胞。进一步用其它化合物处理,细胞转化为胰腺祖细胞样细胞