Mirandese language and genetic differentiation in Iberia: a study using X chromosome markers

Background: In the Iberian Peninsula, the Mirandese dialect, spoken in Miranda do Douro (Portugal) close to the north-eastern border with Spain, has attracted much attention.

Aim, subjects and methods: This study focuses on providing further insight into the connections forged between Miranda do Douro and regions in the nearby Province of Zamora. This is in order to better assess the extent to which such relations could have been detained by the current patterns of genetic diversity of the populations, whilst contributing to refining the knowledge on patterns of micro-differentiation within the Peninsula. The genetic characterization of both populations was performed through the analysis of X-chromosomal markers: X-STRs and X-indels.

Results and conclusion: The results showed that Miranda do Douro tended to present slightly lower levels of diversity in comparison to the other studied regions, which can be a discreet sign of isolation of that population over the years that might have led the way to the preservation of a language not spoken anywhere else in the country. The analysis of X-STRs particularly brought to light the presence of a subtle population sub-structure at the micro-geographical area encompassing the north-eastern border, which seems to portray the importance of the political border as a mechanism withholding gene flow between the two countries.     

miRNA检测在结直肠癌诊断及中医药研究中的应用

miRNA基因作为调控基因,参与了结直肠癌的发生、发展、淋巴结转移、远处转移及复发等多个过程,与结直肠癌的发生发展密切相关,且其在血液和粪便中可保持一定的稳定性和特异性,故miRNA可作为结直肠腺瘤-腺癌临床早期检测及诊断结直肠癌的无创性新型生物标志物。目前已有不少研究在探索血清及粪便中miRNA分子标志物在结直肠腺瘤或结直肠癌筛查中的敏感度和精确度。以患者血清或粪便miRNA表达水平及结合其他实验室指标的动态变化数值作为结直肠癌疗效预测的生物标记物,在临床过程中将患者分层,实施个体化治疗,做到科学、合理、安全的用药,将提高结直肠癌的临床疗效。明确中医不同证型患者血清miRNA表达谱的不同并将miRNA表达水平作为微观辨证的生物标志物,可为中医药个体化治疗奠定基础。     

慢性乙型肝炎中医证型与纤维化指标及肝脏病理的相关性研究

目的:探讨慢性乙型肝炎中医证型的相关因素。方法:检侧符合诊断标准的381例慢性乙型肝炎患者透明质酸(HA)、Ⅲ型前胶原(PCⅢ)、Ⅳ型胶原(Ⅳ-C)、层粘连蛋白(LN)、肿瘤坏死因子-α(TNF-α)、转化生长因子β1(TGF-β1)等指标的水平及208例患者肝组织病理,观察上述指标与中医证型的关系。结果:瘀血阻络组HA、PCⅢ、LN、Ⅳ-C、TGF-β1高于其它各型(P<0.01);肝郁脾虚型HA、PCⅢ、LN、Ⅳ-C、TGF-β1、TNF-α高于正常水平(P<0.01或P<0.05),明显低于其他各型(P<0.01);湿热中阻、瘀血阻络组TNFα、TGF-β1高于肝肾阴虚、脾肾阳虚组(P<0.01),而湿热中阻组TNF-α高于瘀血阻络组(P<0.01);肝郁脾虚、湿热中阻型S1～S2级G1～G2期较多,肝肾阴虚型和脾肾阳虚型S3级G2～G3期较多,瘀血阻络型以S3～S4级G3～G4期为主。结论:慢性乙肝的肝组织病理改变、HA、PCⅢ、LN、Ⅳ-C、TGF-β1、TNF-α等指标的异常变化与中医证型之间存在一定相关性。     

浅谈中风“治未病”与微观辨证的关系

中风病需重视预防,治未病思想能够指导中风病防治。微观辨证是对传统辨证方法的补充和丰富,可以弥补传统辨证手段的不足。运用微观辨证方法,能够更好地发挥中医"治未病"思想在中风病防治中的作用,故而临床医务工作者应予以足够的重视。