氟对体外培养人牙乳头间充质细胞合成I型胶原的影响

目的:明确氟对人牙乳头细胞合成 I型胶原的影响。 方法:对人牙乳头细胞进行体外培养 ,分别给予0 .0、0 .2× 10 - 6、1.0× 10 - 6、5 .0× 10 - 6、2 5 .0× 10 - 6 g/ L 氟处理 ,采用免疫细胞化学方法染色 ,图象分析氟对细胞合成 I型胶原的影响。 结果:I型胶原在对照组和 4种氟浓度处理组细胞表达均为阳性。图象分析结果表明 ,4种氟浓度对体外培养的人牙乳头细胞合成 I型胶原量与对照组相比差异无统计学意义 (P>0 .0 5 )。结论:过量氟对牙本质基质 型胶原的影响可能不是通过影响成牙本质细胞内合成实现的     

一种适用于大规模高效快速分离培养人头皮毛乳头细胞的方法

目的:寻求适合于毛囊组织工程的大规模高效快速分离培养人头皮毛乳头细胞的方法。方法:将含有毛囊中下部的皮下组织剪碎,加入胶原酶Ⅰ消化2h,悬液经400目筛网过滤,收集被筛网截留的毛乳头进行培养,计算其贴壁率,绘制细胞生长曲线,并与显微解剖法相比较。结果:用这种方法成功分离培养了人头皮毛乳头细胞。结论:消化过滤法是一种能够大规模高效、快速分离培养人头皮毛乳头细胞的方法。     

Carcinoma of the papilla of vater: Are endoscopic appearance and endoscopic biopsy discordant?

Carcinoma of the papilla of Vater is classified as periampullary cancer representing 5% of all gastrointestinal tract malignancies. Early and accurate diagnosis is important for those patients with a tumor of the papilla, as the prognosis is more favorable than in other periampullary neoplasms. Endoscopically obtained biopsies from suspicious papillae can detect an early tumor, although even for skilled pathologists it is often difficult to differentiate carcinomas from noninvasive lesions on the basis of forceps biopsies. The purpose of this study was to assess the preoperative diagnostic accuracy of duodenoscopy appearance and biopsy in all cases with suspicion of tumor. Thirty patients with suspicion of carcinoma of the papilla of Vater and with final diagnosis established by pancreatoduodenectomy were included in this retrospective study. In each case, a comparison was made between endoscopic biopsy and duodenoscopic appearance. Duodenoscopic appearance sensitivity and accuracy for malignancy were 86% and 83%, respectively, whereas endoscopic biopsy sensitivity and accuracy were 65% and 67%, respectively. Although preoperative diagnosis of carcinoma of the papilla of Vater is useful for making therapeutic decisions, the diagnostic value of the endoscopic appearance was superior to endoscopic biopsy in this series. Presented at the 2003 American Hepato-Pancreato-Biliary Association Congress, Miami, Florida, February 27-March 3, 2003. Supported by FADA-CAPES/PROP 200J (M.L.D.).     

人毛乳头细胞条件培养液治疗斑秃的临床观察

目的：人毛乳头细胞条件培养液治疗斑秃患者的临床观察。方法：用人毛乳头细胞条件培养液治疗100例斑秃患者，并分别选择其中53例和30例作去炎松组和空白组自身对照。结果：人毛乳头细胞条件培养液组、去炎松组和空白组治愈率分别为75％、51％、10％，有效率分别为97％、72％、30％，人毛乳头细胞条件培养液组其治愈率和有效率均明显高于去炎松组和空白组（P〈0．05）。结论：人毛乳头细胞条件培养液对斑秃患者有明显的治疗作用。     

清开灵治疗缺血性视乳头病变40例疗效分析

目的 :探讨清开灵治疗缺血性视乳头病变的疗效。方法 :用前瞻性评估研究方法 ,将缺血性视乳头病变 70例患者按随机原则进行分组。治疗组 4 0例 ,用清开灵辅助治疗 ;对照组 30例 ,单纯用西医治疗 ;以视力为主要评估指标。结果 :治疗组与对照组愈显率及总有效率分别为 77 5 % ,6 0 0 %和 95 0 % ,83 3% ,差异有显著性 (P <0 0 1) ,无毒副作用。结论 :用清开灵辅助治疗缺血性视乳头病变疗效肯定     

Surgical treatment for carcinoma of the papilla of vater

Eighty of 89 patients who underwent radical resection (resectability 89.9%) for carcinoma of the papilla of Vater between 1976 and 1992 were retrospectively reviewed. Seventy-three patients underwent pancreaticoduodenectomy (PD) and 7 underwent pylorus-preserving pancreaticoduodenectomy (PPPD). The postoperative mortality rate was only 3.8% (3 patients). The 3- and 5-year survival rates were 63.6% and 57.4%, respectively. Important factors influencing long-term survival were Stage (clinical stage = Stage), microscopic lymph node metastasis (n), duodenal wall invasion (d), vascular invasion (v), and the epithelium of origin. Early carcinoma of the papilla of Vater is defined as tumor in which invasion is limited within the papilla of Vater; in particular, carcinomatous invasion is within the muscle of Oddi (d₀) with n₀. PD and/or PPPD with radical lymph node dissection should be performed for carcinoma of the papilla of Vater, as these procedures can be performed with low morbidity and mortality.     

人毛乳头细胞凝集性生长差异表达基因cDNA文库的构建

目的 构建毛乳头细胞凝集性生长状态下差异表达基因的消减cDNA文库。方法 分别提取凝集性生长和非凝集性生长状态下毛乳头细胞中的总RNA，应用SMART cDNA合成技术和抑制性消减杂交技术分离毛乳头细胞凝集性生长状态下差异表达基因的cDNA片段并建立消减cDNA文库；利用PCR对随机挑选的100个白色菌落进行插入片段的验证，对其中证实有插入片段的30个克隆进行cDNA斑点杂交验证。结果 所构建的消减cDNA文库扩增后得到320个阳性克隆，随机挑选的100个阳性克隆中95％的均有长度在100—600bp的插入片段，cDNA斑点杂交验证显示27个(90．0％)克隆为阳性。结论 结合SMART cDNA合成技术，应用抑制性消减杂交成功地构建了毛乳头细胞凝集性生长差异表达基因消减cDNA文库，为进一步筛选和克隆毛乳头细胞凝集性生长相关基因奠定了基础。     

肾缺血再灌流对活体大鼠肾内髓微循环的影响

对于大鼠进行肾缺血再灌注对肾乳头微循环影响的活体观察。结果显示:肾动脉阻断后,肾乳头直血管出现短暂性缺血苍白,继而节律性运动加强,进行性扩张,血液钟摆样倒流,肾乳头呈明显充血现象。再灌流后,部分直血管不能复流,呈持续淤滞状态;复流直血管痉挛性收缩,致乳头血流量明显减少。组织学检查见肾髓质血管内大量RBC聚集,肾浅皮层循环状态良好。提示:肾乳头缺血时的充血反应是对缺血性损害的保护性机制,也是导致缺血后再灌流时髓质血流淤滞的原因之一;前列腺素在这一机制中可能起重要作用。     

鼠牙乳头细胞核心结合因子cDNA片段的克隆与序列测定

目的 从培养大鼠牙头细胞中克隆核心结合因子（cbfal）的cDNA片段。方法 原代培养大鼠牙乳头细胞,提取培养细胞的总RNA,逆转录合成cDNA,用PCR的方法扩增cbfal基因片段。将获得的预期大小的PCR产物插入pUC18克隆载体中,转化TOP10感受态细胞,蓝白筛选白色克隆,进行体外扩增,提取质粒进行酶切鉴定,含目的插段的克隆在PE317-A自动测序仪上进行序列测定。结果 从培养的鼠牙乳头细胞提取的总RNA中成功克隆出691bp cbfal基因片段,测序结果和GenBank报道序列完全一致。结论 从鼠牙乳头细胞中成功克隆到cbfal基因片段,确切的证实了核心结合因子（cbfal）基因在鼠牙乳头细胞中的表达。