国内妊娠合并糖尿病热点研究

以万方数据库妊娠合并糖尿病相关中文文献为数据源，运用共词分析、社会网络分析方法探索该领域当前研究热点及未来发展趋势。结果显示当前热点主要集中在妊娠期糖尿病监测、护理及疾病影响等方面，未来研究趋势为该疾病诊断、预防和干预管理等。     

Biomaterials reinforced MSCs transplantation for spinal cord injury repair

Due to the complex pathophysiological mechanism, spinal cord injury (SCI) has become one of the most intractable central nervous system (CNS) diseases to therapy. Stem cell transplantation, mesenchymal stem cells (MSCs) particularly, appeals to more and more attention along with the encouraging therapeutic results for the functional regeneration of SCI. However, traditional cell transplantation strategies have some limitations, including the unsatisfying survival rate of MSCs and their random diffusion from the injection site to ambient tissues. The application of biomaterials in tissue engineering provides a new horizon. Biomaterials can not only confine MSCs in the injured lesions with higher cell viability, but also promote their therapeutic efficacy. This review summarizes the strategies and advantages of biomaterials reinforced MSCs transplantation to treat SCI in recent years, which are clarified in the light of various therapeutic effects in pathophysiological aspects of SCI.     

玄参多糖对2型糖尿病大鼠糖脂代谢及肝胰岛素信号通路的影响

目的探究玄参多糖对2型糖尿病大鼠糖脂代谢及肝胰岛素信号通路的影响。方法采用链脲佐菌素(STZ)注射法制备糖尿病大鼠模型,随机分成5组,分别为模型组、阳性药二甲双胍(200 mg/kg)组及玄参多糖低、中、高剂量(80、160、320 mg/kg)组,另设同周龄普通饲料喂养大鼠为对照组;ig给药6周后监测各组大鼠体质量及生存状态、空腹血糖(FBG)、血脂[总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)]、肝功能[丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)]、肾功能[肌酐(CREA)、血尿素氮(BUN)]、糖化血红蛋白(GHb)、空腹血清胰岛素(FINS)、C-肽、超氧化物歧化酶(SOD)、丙二醛(MDA)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)等指标的变化;HE染色和油红O染色评估大鼠肝脏病理学变化及脂肪变性;Western blotting法检测肝胰岛素信号通路相关蛋白表达。结果玄参多糖能回升2型糖尿病大鼠体质量,改善代谢功能,降低大鼠FBG、GHb、ALT、AST、CREA、BUN、TC、TG、LDL-C、MDA水平,升高HDL-C、FINS、C-肽、SOD、CAT、GSH-Px水平;Western blotting结果表明玄参多糖能活化IRS-2/PI3K/Akt信号通路,升高过氧化物酶体增殖物激活受体γ(PPAR-γ)、葡萄糖转运蛋白4(GLUT-4)表达水平。结论玄参多糖能够改善2型糖尿病大鼠糖脂代谢,其机制可能跟调控肝胰岛素信号通路有关。     

Cadmium accumulation,sub-cellular distribution and chemical forms in rice seedling in the presence of sulfur

Changes in cadmium (Cd) accumulation, distribution, and chemical form in rice seedling in the joint presence of different concentrations of sulfur (S) remain almost unknown. Therefore, the indoor experiments were performed to determine the accumulation, sub-cellular distribution and chemical forms of Cd under three S levels in rice seedling for the first time. The result showed that Cd accumulation in rice roots was more than in shoots. Sub-cellular distribution of Cd in rice roots and shoots indicated that the largest proportion of Cd accumulated in cell walls and soluble fractions. As S supply increased, the proportion of Cd in cell walls reduced, while it increased in the soluble fractions. The majority of Cd existed in inorganic form, and then gradually changed to organic forms that included pectates and proteins with increased S supply. The results showed that S supply significantly influenced Cd accumulation, distribution, and chemical forms, suggesting that S might provide the material for the synthesis of sulfhydryl protein and thereby affect Cd stress on plants. These observations provided a basic understanding of potential ecotoxicological effects of joint Cd and S exposure in the environment.     

AQP1和AQP5在原发性输卵管癌中的表达及临床意义

目的:探讨水通道蛋白AQP1和AQP5在原发性输卵管癌中的表达及临床意义。方法:采用免疫组织化学法检测37例原发性输卵管癌、15例正常输卵管组织AQP1和AQP5的表达。结果:AQP1主要表达在原发性输卵管癌癌巢周围间质毛细血管和微血管的内皮细胞上,AQP5表达于癌细胞质内及输卵管上皮细胞质。AQP1和AQP5在原发性输卵管癌中呈高表达,与正常输卵管AQP1和AQP5比较有统计学差异(P<0.001),Ⅲ,Ⅳ期输卵管癌AQP1的表达明显高于Ⅰ、Ⅱ期(P<0.01),但在组织学分级及淋巴转移间无统计学差异。AQP5的表达在不同组织学分级、临床分期及淋巴转移间无统计学差异。结论:AQP1和AQP5的高表达可能与原发性输卵管癌的发生、发展有密切关系。     

Mitochondrial DNA haplogroup associated with sperm motility in the Han population

In this study, we aimed to determine whether the main mitochondrial DNA （mtDNA） haplogroups of the Han people have an impact on spermatozoa motility, We recruited 312 men who were consecutively admitted to two affiliated hospitals of College of Medicine, Zhejiang University from May 2011 to April 2012 as part of fertility investigations. Semen and whole blood samples were collected from the men. We determined the mtDNA haplogroups by analysing the sequences of mtDNA hypervariable segment I and testing diagnostic polymorphisms in the mtDNA coding region with DNA probes, No significant differences were found in the clinical characteristics of the mtDNA haplogroup R and non-R （P〉0.05）. Our results suggest that mtDNA haplogroup R is a strong independent predictor of sperm motility in the Han population, conferring a 2.97-fold （95% confidence interval： 1.74-4.48, P〈0.001） decreased chance of asthenozoospermia compared with those without haplogroup R.     

测听室环境布置的相关问题

本文对测听室的布置宗旨、测听室墙壁的布置特点、测听室桌椅的设计、测听室内仪器的摆放、测试者与受试者的位置要求以及其他一些需要注意的相关问题进行概述,并提出一些具体要求和处理方法。     

体外受精和胚胎移植后妊娠合并急性粟粒性肺结核的临床特点

目的总结体外受精和胚胎移植（IVF-ET）后妊娠发生急性粟粒性肺结核的临床特点。方法回顾性分析2001年1月至2005年12月在浙江大学医学院附属妇产科医院生殖中心接受IVF-ET后妊娠并发粟粒性肺结核的6例临床资料。结果IVF-ET后妊娠并发粟粒性肺结核患者的临床表现多不典型，以发热为主要表现，呼吸道症状隐匿。胸部影像学表现以粟粒性结节和浸润性改变为主。平均于移植后53．2d发病，1例人工流产终止妊娠，其余5例均在发病后2～4周内发生自然流产。结论发热为急性粟粒性肺结核的主要临床表现，IVF-ET后妊娠发生粟粒性肺结核的妊娠结局差，对抗炎治疗无效的发热患者应警惕肺结核，尽早行结核病的相关检查。