线粒体自噬调控骨关节炎的最新进展（英文）

骨关节炎是一种以关节内软骨损伤退变、软骨下骨异常重塑、骨赘生成、滑膜炎症反应和广泛血管生成为特征的慢性退行性关节疾病,是全球60岁以上人群最常见的肌肉骨骼疾病。在骨关节炎的发生发展过程中,软骨细胞的异常代谢发挥了重要致病作用。线粒体功能障碍作为软骨细胞代谢异常的重要诱因,参与了骨关节炎的发生和发展。因此,维持线粒体稳态是一种避免骨关节炎发生的重要方式。线粒体自噬是自噬体靶向吞噬损伤线粒体,以清除受损或功能失调的线粒体,维持线粒体稳态的一种方式。越来越多的研究发现线粒体自噬与骨关节炎密切相关,这提示线粒体自噬功能的调节可以作为一种治疗骨关节炎的新方法。本文通过对近年来线粒体自噬在骨关节炎中的研究进行综述,进一步阐述了线粒体自噬调控骨关节炎的潜在机制,为线粒体自噬治疗骨关节炎的相关研究提供理论依据。     

严重肢体缺血患者血浆中促血管生成潜力与血浆MMP-9、TIMP-1和TIMP-2水平升高的相关性研究（英文）

本研究通过比较间歇性跛行(IC)和严重肢体缺血(CLI)患者的血液参数,选择合适的临床和生化特指标,以评估促血管生成的潜力和抑制血管生成的作用.结果表明,通过刺激下肢动脉疾病(LEAD)病人血浆中的血管生成,内皮生长因子A(VEGF-A)浓度会显著增加,同时依赖于循环受体sVEGFR-1和sVEGFR-2的抑制也会显著减少.与IC病人相比,CLI病人具有较高的VEGF-A、金属蛋白酶9(MMP-9)、金属蛋白酶组织抑制因子1(TIMP-1)和TIMP-2浓度.     

A genetic diversity comparison between captive individuals and wild individuals of Elliot＇s Pheasant （Syrmaticus ellioti） using mitochondrial DNA

Maintaining genetic diversity is a major issue in conservation biology. In this study, we demonstrate the differences of genetic diversity levels between wild and captive individuals of Elliot‘s Pheasant Syrmaticus ellioti. Wild individuals showed a higher genetic diversity level than that of the captive individuals. Nucleotide diversity and haplotype diversity of wild individuals were 0.00628 and 0.993, while those of captive individuals were 0.00150 and 0.584 respectively. Only 3 haplotypes of mtDNA control region sequence were identified among 36 captive individuals, while 16 unique haplotypes were identified among the 17 wild individuals in this study. One captive haplotype was shared by a wild individual from Anhui Province. It is concluded that a low number of founders was the likely reason for the lower level genetic diversity of the captive group. Careful genetic management is suggested for captive populations, particularly of such an endangered species, to maintain genetic variability levels.