Deep-seated soft tissue leiomyomas

The radiologic and histologic findings of four deep-seated, soft tissue leiomyomas are reported. Clinically and radiologically, they mimicked soft tissue sarcomas because of their location and rich vascularization.     

四种膳食纤维抗大鼠脂肝作用的初步形态定量分析

作者比较了5％的魔芋精粉,果胶,褐藻胶和琼脂抗脂肝作用。结果表明,魔芋精粉组全肝组织总胆固醇,游离胆固醇及甘油三酯显著低于高脂组,还低于其余3个实验组。组织病理学检查和形态计量分析显示,魔芋精粉和褐藻胶具有抗脂肝作用,以前者效果较显著。     

巨噬细胞移动抑制因子经Rho激酶途径促进人胚肺成纤维细胞表型转化

 目的：观察重组巨噬细胞移动抑制因子（rMIF）对人胚肺成纤维细胞（MRC-5）表型转换的作用,探讨哮喘气道重塑的发生机制。方法：不同浓度的rMIF (25~100 μg/L)分别作用于MRC-5细胞24 h或48 h,RT-PCR法检测α-平滑肌肌动蛋白（α-SMA）  mRNA表达,Western blotting检测α-SMA蛋白合成;100 μg/L rMIF刺激MRC-5细胞48 h,刺激前0.5 h加入Rho拮抗剂Y27632,RT-PCR法检测α-SMA mRNA表达,Western blotting法检测α-SMA表达;100 μg/L rMIF分别刺激MRC-5 6 h、12 h、24 h或48 h,Western blotting检测磷酸化肌球蛋白磷酸酶目标亚单位1（p-MYP1）蛋白合成。结果：刺激MRC-5 24 h,不同浓度的rMIF对α-SMA mRNA转录未见显著影响（P>0.05）。刺激MRC-5细胞48 h,rMIF可呈剂量依赖地促进α-SMA mRNA （r=0.697,P<0.01）和蛋白（r=0.957,P<0.01）表达。Y27632预刺激后,显著抑制rMIF100 μg/L促进α-SMA mRNA和蛋白表达的作用（均P<0.01）。rMIF刺激6 h后,p-MYPT1表达显著增加（P<0.01）,12 h达到高峰（P<0.01）,24 h开始下降,但24 h和48 h其水平仍高于对照组（均P<0.01）。结论：rMIF通过Rho信号通路刺激成纤维细胞表型转化,可能在哮喘气道重塑的发病机制中发挥关键作用。     

肝内HBcAg与血清学指标的关系及慢性乙型肝炎发病机理的探讨

作者用ABC法和D-PAP法检测了59例慢性乙型肝炎患者肝内HBcAg及血清HBV-DNA、抗-HBe。结果,肝内HBcAg的检出和含量与肝损伤呈负相关趋势,提示CAH肝损伤程度不直接与HBV复制有关,且表明血清HBV-DNA能很好地反映肝内HBcAg存在情况,在血清中已出现抗-HBe的病人中可检出肝内HBcAg(39％)及血清HBV-DNA(45％),所以不能认为抗-HBe是HBV复制停止及传染性减弱的指标。     

Case report 618

A patient with a history of angioblastic meningioma 7 years previously developed lytic metastatic disease to the femur at two separate sites. The controversy in terminology of angioblastic meningioma and hemangiopericytoma and the similarity in radiological and pathological appearance of primary and metastatic hemangiopericytoma of bone illustrate the need for an accurate clinical history to arrive at a correct diagnosis.     

大鼠外侧隔在中央杏仁核情绪升压系统中作用的实验研究

目的 本实验在于分析乙酰胆碱-外侧隔(Ach-SL)升压系统与中央杏仁核(AC)情绪升压环路之间的关系.方法 脑内核团微量注射不同的药物,记录血压和心率的变化.结果 (1)促肾上腺素(CRF)或P物质(SP)注射入双侧SL可引起升压反应.L-谷氨酸钠(Glu)微量注射到AC的升压反应均被双侧SL内注入CRF或SP拮抗剂所减弱.(2)阿托品(Atro)预先注入双侧外侧僵核(HBL)、蓝斑(Lc)、延髓头端腹外侧区(RVL),Glu对AC的升压反应可被减弱.(3)HBL有Ach能神经纤维投射到背侧丘脑后核(HP)并兴奋HP,HP又通过RVL、LC-RVL产生升压反应.Atro预先注入HP可减弱Glu对AC的升压反应.结论 用Glu兴奋SL能依此有效地兴奋HBL、LC、RVL,此系统的各个通路由M-受体介导,SL-HBL(或HBL-HP)-LC-RVL的升压系统参与AC情绪升压环路.     

Dysplasia epiphysealis hemimelica of the distal ulna: a case report and review of the literature

Dysplasia epiphysealis hemimelica (DEH) or Trevor''s Disease is a very rare disease with an estimated incidence of one in 1.000.000. The majority of cases reported affect the lower limb and only 25 case reports of 33 cases with affection of the upper limb have been published. Here we present a case of DEH affecting the distal ulnar epiphysis and the lunate in an eleven-year-old girl, a DEH location described extremely rarely before. We firstly do not only present clinical and radiological findings (plane radiographs, CT, MRI), but also the surgical approach and the histopathological results of DEH in this uncommon location. Although extremely rare, DEH should be considered also in non-typical locations.