脑电超慢涨落图技术的基本原理及在精神疾病中的应用

脑电超悦涨落图技术(Encephalofluctuograph Technology,ET)是一项由我国首创的世界先进的脑功能研究新技术.它根据神经化学襄荡、传导与脑电超怪成分之间的对应关系,无创、定贡检侧人在生理和病理状态下脑内神经递质的活动和脑功能状态.可为神经精神疾病的临床诊断提供客砚证据,对临床治疗起到指导作用...     

外源性hCG对肾组织EGF的影响

目的:探讨外源性绒毛膜促性腺激素(hCG)对肾组 织表皮生长因子(EGF)的影响.方法:300-350克雄性SD 大鼠20只,分为对照组和实验组,每组10只.实验组肌肉注射hCG 200 IU/d,对照组肌肉注射等量生理盐水,连续注射7 d.用免疫组化分析两组大鼠肾脏EGF表达,用荧光定量PCR法检测肾脏组织EGF mRNA相对表达量.结果:免疫组化结果显示hCG干预后,实验组肾脏EGF的阳性率明显高于对照组(P<0. 01).然而荧光定量PCR结果显示EGF mRNA表达量在实验组与对照组间无统计学差异(P>0. 05).结论:外源性hCG在一定剂量范围内促进肾脏EGF的成熟而非合成.     

2009年夏季174例手足口病患儿病原分析

目的分析本院2009年夏季手足口病患儿病原及其血清型特征,为临床早期诊断和疾病防控提供实验依据。方法2009年4—9月,首都儿科研究所附属儿童医院门诊就诊的174例手足口病患儿咽拭子和疱疹液,实时荧光RT—PCR方法检测肠道病毒通用型（EV）、柯萨奇A16型（CA16）、肠道病毒71型（EV71）。131例患儿双份血清,同时检测CA16、EV71IgM抗体。CA16和EV71阳性标本扩增VP1区基因片段后测序,进行同源性和系统进化分析。结果（1）EV、CA16、EV71阳性例数分别为167、112、46;阳性率为96．O％、64．4％、26．4％,CA16：EV71为2．43：1。（2）首诊血清CA16和EV71IgM阳性例数为51、25,阳性率为38．9％、19．1％,复诊阳性例数为98、32,阳性率为74．8％、24．4％。（3）CA16VP1区核苷酸同源性为88．7％-98．5％,EV71VP1区核苷酸同源性为94．9％-99．7％,与c4亚型参比序列核苷酸同源性92．1％～95．3％。结论2009年夏季本院手足口病患儿病原以CA16、EV71为主,EV71阳性率较之前报道有较大幅度升高。EV71病毒株以c4亚型为主。实时RT-PCR法较血清学检测特异性IgM抗体更适于疾病早期诊断。     

HGF inhibits TGF-β1-induced myofibroblast differentiation and ECM deposition via MMP-2 in Achilles tendon in rat

Both myofibroblast differentiation and extracellular matrix (ECM) deposition are essential components of scar formation in tendons, and hepatocyte growth factor (HGF) is reported to prevent fibrogenic responses in tendons. Matrix metalloproteinases-2(MMP-2) is also involved in the healing process in tendons. Whether HGF protects healed Achilles tendons from injury-induced scar formation and the mechanisms are unknown. Daily for 2 weeks after wounding, except for the non-surgical control group, the Achilles tendons in rats were locally injected with HGF (100 ng 50 μl⁻¹ per mouse) or phosphate-buffered saline (PBS). Histological examination showed HGF ameliorated disorganized collagen fibers caused by surgical incisions in rats. After transforming growth factor beta-1 (TGF-β1) induced fibrogenic responses in primary Achilles tendon fibroblasts in rats, HGF treatment for 24 h reduced α-smooth muscle actin (α-SMA) (0.60 ± 0.07-fold, P < 0.05) and type III collagen expression (0.39 ± 0.07-fold, P < 0.05). Moreover, HGF elevated MMP-2 expression (1.23 ± 0.11-fold, P < 0.05). The MMP-2 inhibitor, tissue inhibitors of metalloproteinase-1 (TIMP-1), partially blocked the inhibitory effects of HGF on α-SMA expression (from 0.60 ± 0.07-fold to 0.83 ± 0.07-fold, P < 0.05) and type III collagen expression (from 0.39 ± 0.06-fold to 0.86 ± 0.08-fold, P < 0.05). These results indicate HGF attenuates TGF-β1-induced fibrogenic responses in Achilles tendon, which was mediated by MMP-2. These results will aid in developing effective therapeutic approaches for the dysfunctional repair in Achilles tendons.     

大学生课堂做其他作业现象分析

目的 调查大学生课堂做其他作业的现象,分析其原因,提出相应的对策.方法 通过自制问卷,调查某大学所有在校学生课堂做其他作业的情况和原因.结果 75.7%的大学生有过课堂做其他作业的经历,不同性别、类别、年级、专业之间有差异(χ<'2>=19.967、38.062、36.600、88.747,P<0.001).其原因主要...     

永存颈内-基底动脉吻合的影像学特点及其意义

目的　探讨永存颈内-基底动脉吻合的影像学特点, 提高对此类异常吻合血管的认识。 方法　回顾性分析12例经头颈CT血管造影(CTA)及MR血管造影(MRA)诊断为永存颈内-基底动脉吻合患者的影像学资料。其中9例病人行头颈联合CTA检查,3例行头和/或颈部MR血管造影(MRA)检查。 结果　12例中,9例为永存三叉动脉,3例为永存舌下动脉。永存三叉动脉中,外侧型8例,内侧型1例;按Saltzman分型Ⅰ型3例,Ⅱ型2例,Ⅲ型4例;吻合点近端的基底动脉及双侧椎动脉发育不良4例,吻合点近端基底动脉完全萎缩1例;1例合并动脉瘤,2例合并大脑中动脉成窗。3例永存舌下动脉中,2例伴同侧椎动脉缺如,1例伴对侧椎动脉发育不良,1例伴对侧椎动脉发育不良及成窗变异。 结论　（1）CTA及MRA能清晰、快速、准确地显示永存三叉动脉和永存舌下动脉等颈内-基底动脉吻合的走行、毗邻关系及其合并症;（2）熟悉这些原始吻合血管的特征有助于指导临床制定合理的治疗方案,提高相应治疗中的安全性。     

Examination of Ureaplasma urealyticum and Mycoplasma hominis in 4082 Chinese patients

The objective of this study was to analyze the infection rate and drug resistance of Ureaplasma urealyticum (UU) and Mycoplasma hominis (MH) in the genitourinary tract of Chinese patients. From December 2018 to June 2019, vaginal secretion or urinary secretion of outpatients in our hospital were selected for culture and drug sensitivity analysis of Ureaplasma urealyticum and Mycoplasma hominis. In 4082 Chinese samples, 1567 Mycoplasma were detected, a detection rate of 38.39%, among which 1366 cases were UU single positive, accounting for 33.47%, 15 cases were MH single positive, accounting for 0.36%, 186 cases were UU and MH mixed positive, accounting for 4.56%. The most affected age groups were 21-30 years and 31-40 years, accounting for 19.09 and 15.05%, respectively. The results of drug sensitivity showed that doxycycline, minocycline, josamycin, clarithromycin, and roxithromycin were more sensitive to mycoplasma infection. The distribution of Ureaplasma urealyticum and Mycoplasma hominis in the human genitourinary system and their sensitivity to antibiotics is different for sex and age groups.     

孕期亲密伴侣暴力和孕晚期就寝-晨起规律与小于胎龄儿的关系

目的:探讨孕期亲密伴侣暴力(IPV)与小于胎龄儿(SGA)的关联,并分析孕晚期就寝-晨起规律在其关联中的作用。方法:从2015年3月-2019年6月在合肥市三家医院的产科门诊招募孕妇4908名,使用WHO多国妇女健康和家庭暴力研究小组总结而来的清单式问卷进行调查,并采用多元logistic回归模型进行分析。结果:孕期精神暴力、躯体暴力、性暴力和总IPV发生率分别为9.1%、1.4%、0.9%和9.7%,SGA发生率为7.1%。回归分析结果显示,孕期IPV与SGA正向关联(OR=1.59);分别按就寝时间和晨起时间分层,7∶00后起床、22∶00-23∶00和23∶00后就寝组的IPV与SGA正向关联(OR=2.85、2.18、1.98);按就寝-晨起规律分层,非早睡早起组的IPV和IPV组的非早睡早起与SGA正向关联(OR=2.15、3.32)。结论:孕期遭受IPV(尤其是精神暴力)会增加SGA的风险,而就寝-晨起规律会使IPV与SGA的关联在不同的规律下增强或减弱。