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Diabetes Care:下降的CD34+干细胞数量可预测2型糖尿病病人的不良心血管事件

2016-11-13 佚名 生物谷

2型糖尿病原名叫成人发病型糖尿病,多在35~40岁之后发病,占糖尿病患者90%以上。 2型糖尿病患者体内产生胰岛素的能力并非完全丧失,有的患者体内胰岛素甚至产生过多,但胰岛素的作用效果较差,因此患者体内的胰岛素是一种相对缺乏,可以通过某些口服药物刺激体内胰岛素的分泌。但到后期仍有一些病人需要使用胰岛素治疗。 2型糖尿病中一部分病人以胰岛素抵抗为主,病人多肥胖,因胰岛素抵抗,胰岛素敏感性下降,血


2型糖尿病原名叫成人发病型糖尿病,多在35~40岁之后发病,占糖尿病患者90%以上。

2型糖尿病患者体内产生胰岛素的能力并非完全丧失,有的患者体内胰岛素甚至产生过多,但胰岛素的作用效果较差,因此患者体内的胰岛素是一种相对缺乏,可以通过某些口服药物刺激体内胰岛素的分泌。但到后期仍有一些病人需要使用胰岛素治疗。

2型糖尿病中一部分病人以胰岛素抵抗为主,病人多肥胖,因胰岛素抵抗,胰岛素敏感性下降,血中胰岛素增高以补偿其胰岛素抵抗,但相对病人的高血糖而言,胰岛素分泌仍相对不足。此类病人早期症状不明显,仅有轻度乏力、口渴,常在明确诊断之前就可发生大血管和微血管并发症。饮食治疗和口服降糖药多可有效。另一部分病人以胰岛素分泌缺陷为主,临床上需要补充外源性胰岛素。

在一项新的研究中,来自意大利帕多瓦大学的研究人员发现下降的循环CD34+干细胞基准水平可预测2型糖尿病患者的不良心血管事件。相关研究结果于2016年11月4日在线发表在Diabetes Care期刊上,论文标题为“Long-term Prediction of Cardiovascular Outcomes by Circulating CD34+ and CD34+CD133+ Stem Cells in Patients With Type 2 Diabetes”。

帕多瓦大学科学家Gian Paolo Fadini博士和同事们对187名2型糖尿病患者进行中位数为6.1年的监控。基于CD34、CD133和KDR的表达,他们对外周血中的6种干/祖细胞表型在基准状态下进行测量。

研究人员发现首个心血管事件加上因心血管原因而住院的主要时间结果发生在48名患者(4.5/100病人年)体内。相对于没有发生心血管事件的那些病人而言,显著更低的CD34+细胞和CD34+CD133+细胞在发生心血管事件的病人体内观察到。在具有中值水平以下的CD34+细胞和CD34+CD133+细胞的病人体内,心血管事件发生率更高。在风险回归分析中,下降的CD34+细胞和CD34+CD133+细胞数量独立地预测未来的心血管事件(风险比分别为2.21和2.98)。当将CD34+细胞数量加入到被称作英国前瞻性糖尿病研究风险引擎(U.K. Prospective Diabetes Study risk engine)的参考模型中后,C统计分析、持续性净重新分类改进(continuous net reclassification improvement)和/或整体鉴别指数(integrated discrimination index)结果都会得到改善。

论文作者们写道,“在2型糖尿病病人体内,一种下降的循环CD34+干细胞基准水平预测高达6年后的不良心血管事件和改善风险分级。”

原始出处

Gian Paolo Fadini, Mauro Rigato, Roberta Cappellari, Benedetta Maria Bonora, Angelo Avogaro.Long-term Prediction of Cardiovascular Outcomes by Circulating CD34+ and CD34+CD133+ Stem Cells in Patients With Type 2 Diabetes.Diabetes Care.2016

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    2017-09-18 gaoxiaoe
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芝麻油富含不饱和脂肪酸,在食用油中,利用不饱和脂肪酸代替饱和脂肪酸有助于预防和治疗糖尿病。稻米油富含谷维素、生育酚和生育三烯酚等健康成分,其中的γ-谷维素已经被证明具有降胆固醇和抗氧化的作用。那么问题来了,如果将两者混合作为烹饪油食用,对2型糖尿病患者的血糖和血脂有何影响?日本福冈大学与丰益国际、印度医学研究委员会合作,针对300名2型糖尿病患者和100名健康受试者,进行了为期8周的开放标签随机试

Diabetes Care:砷和糖尿病有啥关系?

青年中,砷和糖尿病的关联是鲜为人知的。我们研究了砷与1型和2型糖尿病的关联。因为一碳代谢影响砷代谢,我们也评估了叶酸和维生素B12,与砷代谢对糖尿病患病率的潜在的相互作用。 研究纳入688例患者,年龄<22岁,1型和2型糖尿病分别有429例和85例,还有174例对照参与者。测量血浆砷(无机砷[iAs]、单甲基化砷[MMA]、二甲基化砷[DMA])和一碳代谢标志物(叶酸和维生素B12)。

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