川芎嗪对青霉素致痫大鼠神经细胞的影响

为研究川芎嗪 ( TMP)对青霉素致痫大鼠大脑皮层神经细胞结构的变化 ,使用青霉素致痫大鼠模型 ,采用 BL-4 10生物机能实验系统记录双侧大脑皮层痫样放电 ,待癫痫样放电稳定后 ,腹腔注射不同剂量的 TMP,待其抑制作用最明显时 ,取大脑切片 ,观察大脑皮层神经细胞的结构变化。结果显示 ,TMP对青霉素致痫大鼠大脑皮层神经细胞的形态结构有明显的恢复作用     

PBC教学模式在组织学与胚胎学中的应用研究

为培养学生自学能力，提高思考问题和解决问题的能力，在2000级临床本科学生中随机抽出5个斑，让学生根据自己所学过的基础专业知识与临床课知识相关的方面提出一些不同的问题，然后查找资料，撰写论，并进行讨论，通过PBC教学模式的应用，提高了学习学习的兴趣，拓宽了知识面，并培养了学生分析问题和解决问题的能力。     

鸡胚尿囊绒毛膜法研究细胞间黏附分子-1在血管生成中的作用

目的　探讨细胞间黏附分子 1(intercellularadhesionmolecule 1,ICAM 1)在血管生成中的作用。　方法采用鸡胚尿囊绒毛膜 (chorioallantoicmembrane ,CAM)法进行在体血管生成实验。　结果　 1 10d鸡胚的尿囊绒毛膜经ICAM 1作用 3d后 ,明胶海绵周围放射状走行的微血管非常明显 ,似车辐 ,显微镜下明胶海绵内有垂直长入的微血管 ,明胶海绵周边CAM间充质内微血管数目显著多于对照组 (P <0 0 1)。 2 6d鸡胚的尿囊绒毛膜经Anti ICAM 1作用 3d后 ,明胶海绵周围放射状走行的微血管极不明显 ,显微镜下明胶海绵内几乎没有新生的微血管 ,明胶海绵周边CAM间充质内微血管数目显著少于对照组 (P <0 0 1)。　结论　结果提示 1 ICAM 1有诱导微血管生成的作用 ;2 ICAM 1参与胚胎的血管生成。     

小鼠胚胎睾丸的分化机制

睾丸的分化机制一直是发育生物学与生殖生物学中的一个热点问题。由于睾丸的形成过程复杂,涉及的因素多,大部分文献只就其中的某一部分加以研究,所以有必要将众多的研究成果系统地作一归纳,使我们对睾丸的形成过程有一个较为完整而详细的了     

皮肤血管瘤的组织学分型和鉴定

目的 :探讨皮肤血管瘤的组织学分型标准。方法 :采用组织学常规切片技术和HE染色法对临床皮肤血管瘤标本进行病理复检 ,用免疫组织化学方法检测复检后各期血管瘤和血管畸形中血管内皮生长因子 (vascularen dothelialgrowthfactor,VEGF)的表达 ,结合图像分析技术对组织学分型后的标本进行分析鉴定。结果 :将 35例标本分为血管瘤 2 0例 ,其中增生期 8例 ,退化期 12例 ;血管畸形 15例。增生期血管瘤表现出明显的血管内皮细胞增殖、血管生成 ,VEGF表达强阳性 ;退化期血管瘤血管管腔扩张、退化 ,管壁细胞数减少 ,VEGF表达极弱 ;血管畸形中血管极度扩张 ,VEGF表达极弱。结论 :血管瘤和血管畸形组织形态学上的变化反映了各自的功能活动状态     

Angiogenic Effect of Intercellular Adhesion Molecule-1

In order to investigate the angiogenic effect of intercellular adhesion molecule-1 (ICAM-1), two parts of experiment were performed. Chick embryo chorioallantoic membrane (CAM) assay was used for in vivo angiogenic research. The chick embryos were divided into 4 groups: ICAM-1 group (divided into 3 subgroups, Ⅰ, Ⅱ and Ⅲ) for screening the angiogenic effect of ICAM-1 by adding different concentrations of ICAM-1 (0.1, 0.2 and 0.3 μg/μL) 5 μL into the chick embryo CAMs on the day 10 after incubation for every subgroup; Anti-ICAM-1 group A (divided into 2 subgroups, Ⅰ and Ⅱ) by adding different concentrations of Anti-ICAM-1 (1:100, 1:50) 5μL into the chick embryo CAMs on the day 10 after incubation for every subgroup to evaluate the effect of ICAM-1 on the survival of microvessels through observing whether Anti-ICAM-1 could induce involution of the microvessels on CAMs; Anti-ICAM-1 group B (divided into 2 subgroups, Ⅰ and Ⅱ) by adding different concentrations of Anti-ICAM-1 (1:100, 1:50) 5 μL into the chick embryo CAMs on the day 6 after incubation for every subgroup to evaluate whether ICAM-1 involved in embryonic angiogenesis through observing the growth of microvessels on CAMs; Control group: ICAM-1 or Anti-ICAM-1 was substituted by PBS 5 μL on the day 10 or day 6 after incubation. Three days later, the CAMs were photographed in vivo, excised, sectioned and the number of microvessels was counted. In ICAM-1 group, there was increased number of microvessels arranged radially with "spoked-wheel" pattern around the gelatin sponges. The new microvessels growing perpendicularly to gelatin sponges were observed. The number of the microvessels growing in the CAM mesen-chymes around the sponges in 3 subgroups was higher than that in control group (P<0.01), however, there was no significant difference among the 3 subgroups (P>0.05). In anti-ICAM-1 group A, the radially arranged microvessels were very unclear around the sponges contrast to that of ICAM-1 group. Few new microvessels were detected in the center of the sponges. The number of the microvessels growing in the CAM mesenchymes around the sponges in subgroup Ⅱ was lower than that in control group (P<0.01). There was no significant difference in the number of the microvessels around the sponges between subgroup Ⅰ and control group (P>0.05). In anti-ICAM-1 group B, the radially arranged microvessels were very unclear around the sponges contrast to that of control group. New microvessels were very scarce in the center of the sponges.The number of the microvessels growing in the CAM mesenchymes around the sponges in the 2 subgroups were less than that in control group (P<0.01), and there was significant difference between the 2 subgroups (P<0.05). It was suggested that ICAM-1 could induce angiogenesis and support the survival of microvessels, and ICAM-1 was involved in embryonic angiogenesis.     

胃嗜酸性肉芽肿三例临床分析

１临床资料例１，男，４６岁，腹胀返酸，消瘦３月余，上腹部疼痛１０天入院。查体：发育正常，消瘦，左腹股沟蚕豆大淋巴结，其余浅表淋巴结不肿大。腹部平软，无明显压痛。胃镜检查结果：①慢性反流性食管炎；②窦部病变：胃癌。上消化道钡餐提示：胃内大量潴留液及食物...     

川芎嗪对青霉素致痫大鼠神经元内c-fos表达的影响

目的:用免疫组织化学方法观察川芎嗪（TM）对青霉素致痫大鼠大脑皮层神经元内c-fos表达的影响。方法:使用青霉素癫痫模型,采用BL-410生物机能实验系统记录双侧大脑皮层癫痫放电,观察腹腔注射TMP对大鼠癫痫放电大脑皮层神经元内c-fos表达的影响。结果:腹腔注射TMP（20-40mg/kg）后,大脑皮层神经元内c-fos表达较对照组明显降低。结论:TMP能明显抑制c-fos的表达,具有抗癫痫放电作用。     

哺乳动物精子RNAs的研究进展

精子RNA量少，但种类多。由于生物技术的发展，多种精子RNA的功能和机制被阐明。微小RNA（miRNAs）和mRNA影响精子形成过程中的染色体固缩、鞭毛结构与动力；与Piwi蛋白相作用的RNA（piRNAs）抑制反转录转座子活性、维持基因组稳定，但作用有限。受精和早期胚胎发育过程中，mRNA调节细胞能量通路、影响配子功能（如核质运输和有丝分裂）；miRNAs和内源性小片段干扰RNA（endo-siRNAs）的缺失会使胚胎早期发育产生异常；部分miRNAs前体（pri-mir-RNAs）以前体形式运输，在受精后激活，调节胚胎干细胞多能性；长链非编码RNA（lncRNAs）可调控胚胎基因组的表达与沉默。实验证明，精子RNA[转运RNA来源的小RNA（tsRNAs）、miRNAs、piRNAs]可作为一种稳定的跨代表观遗传标记，通过修饰、改造遗传物质的高级结构，重塑获得性表型并稳定地传递给子代。     

转化生长因子β_1在增生性瘢痕组织中的表达

目的 :探讨增生性瘢痕形成中的病因学及其机制。方法 :利用免疫组织化学方法检测转化生长因子 β1(TGF β1 )在增生性瘢痕组织中的表达。结果 :增生性瘢痕组织中TGF β1 的表达明显高于正常皮肤组织 (P <0 .0 5 ) ,差别具有显著性。结论 :TGF β1 的表达在瘢痕组织中明显强于正常皮肤组织 ;增生性瘢痕组织在形成过程中TGF β1 起着重要的调节作用 ,了解其作用机制为控制瘢痕的形成和治疗提供理论依据