口腔疾病与口腔原虫感染关系的分析

目的：了解银川地区口腔原虫感染情况，进一步探讨口腔原虫感染与口腔疾病的关系。方法：取口腔病灶或齿垢，用生理盐水直接涂片，光镜下检查口腔原虫滋养体。结果：口腔原虫总感染率为34．62％，（其中齿龈阿米巴感染率为32．21％，口腔滴虫感染率为5．05％）。14岁以下、14岁－、25－50岁、50岁以上各年龄组口腔原虫的检出率分别为17．65％、25．87％、26．12％和62．86％。结论：口腔原虫感染与口腔疾病及年龄有显著相关性。     

改良W形回肠代膀胱术的疗效观察(附36例报告)

目的 :探讨改良W形回肠代膀胱术的疗效。方法 :对 36例膀胱肿瘤患者行根治性膀胱切除、W形回肠代膀胱术 ,并对术式进行改进。结果 :36例手术时间平均 4 .2h。术后 31例随访 4～ 19个月 ,平均 10 .6个月 ,无严重并发症 ,均无瘤生存。患者一般于术后 3周自主可控性排尿 ,日间尿控率为 10 0 % ,术后 3、6、12个月夜间尿失禁发生率分别为 2 2 .5 %、11.1%及 6 .2 %。术后 6个月尿动力学检查膀胱容量 (36 0± 30 )ml,最大尿流率 (13.6± 2 .6 )ml/s,剩余尿量 (11.5± 5 .8)ml,充盈期膀胱压力明显低于尿道闭合压。新膀胱造影发现新膀胱呈球形 ,完全位于盆腔 ,未见输尿管反流。B超及IVU检查发现原上尿路积水 4例均明显减轻 ,其余未发现输尿管狭窄和上尿路积水征象。无高氯性酸中毒 ,肾功能正常。结论 :改良W形回肠代膀胱术手术时间短 ,操作简单 ,创伤轻 ,并发症少 ;新膀胱容量大 ,内压低 ,顺应性好 ,功能接近于正常膀胱 ,保持原位排尿 ,明显提高了患者术后生活质量 ,值得临床推广应用。     

硫酸多糖对体外人脐静脉内皮细胞损伤的保护作用

研究表明,硫酸多糖体外对多聚阳离子和氧自由基损伤的人脐静脉内皮细胞有保护作用。肝素、硫酸软骨素A抗多聚阳离子损伤作用比同浓度低分子肝素和甘糖酯强。肝素、硫酸软骨素A、甘糖酯抗氧自由基损伤作用优于同浓度低分子肝素。结果显示硫酸多糖有保护血管内皮的作用,其作用可能与所带阴离子基团有关。     

学龄前儿童的屈光异常与弱视调查

目的了解屈光检查在学龄前儿童弱视普查中的临床用途。方法应用日本尼康手提全自动检影仪对学龄前儿童进行小瞳孔验光,发现屈光有异常的儿童,再进一步进行散瞳检影验光。结果学龄前儿童屈光异常主要以远视散光和混合散光为主,近视与近视散光较少。学龄前儿童屈光异常的发病率是7.87%,弱视发病率为4.04%,接近全国其他同类报告(3.83%)。结论儿童弱视屈光普查优于视力普查,准确性高、效率高。     

阿霉素磁性明胶微球的研究

报告了阿霉素磁性明胶微球（Ａｄｒ－ＭＧ－ｍｓ）的制备与性质，研究了超细氧化铁粒子的合成和磁性明胶微球（ＭＧ－ｍｓ）在狗体内的栓塞效果。阿霉素磁性明胶微球由２％阿霉素（Ａｄｒ）、６８％明胶和３０％的磁铁粒子组成，微球的平均粒径为２２μｍ。在体外实验中，药物释放速度证明微球有缓释的性质。磁铁粒子的平均粒径约为１０ｎｍ，磁性明胶微球与￣（９９ｍ）Ｔｃ标记磁性明胶微球通过导管分别输入狗的肝动脉内进行栓塞，照相和血管造影显示在未加外磁场时磁性明胶微球在左右肝叶分布几乎相等，而在１２００高斯的外磁场作用下，靶部位肝左叶的微球分布是肝右叶的２．２５倍，而甲状腺、脑、心脏的微球很微量，结果表明磁性明胶微球在外磁场作用下是一个很好的治疗肝癌的栓塞剂。     

105Changes in Nitric Oxide Levels After Deep Dermal injury in the Female,Red Duroc Pig (FRDP)

Introduction : Hypertrophic scar is a devastating sequel to burns and other tangential skin injuries. It follows deep dermal injuries and does not occur after superficial injuries. Nitric oxide (NO) plays many important roles in wound healing from inflammation to scar remodeling. Studies have shown that expression of nitric oxide synthase and nitric oxide production are decreased in human hypertrophic scar. However little is known about NO involvement in the early stages of hypertrophic scarring, because of the lack of an animal model. It was recently reported that the female red Duroc pig (FRDP) makes thick scar, which is similar to human hypertrophic scar. We hypothesized that NO production in wounds on the female, red Duroc pig is similar to that of human hypertrophic scar and that NO involvement in deep wounds is different from that in superficial wounds. Methods : Superficial (0.015” to 0.030”) and deep (0.045” to 0.060”) wounds were created on the backs of four FRDPs. Biopsies were collected at weeks 1.5, 4, 8 and 21 post wounding including samples of uninjured skin. Nitric oxide levels were measured with the Griess reaction assay and normalized with tissue protein level. Results : Superficial wounds healed with an invisible scar whereas the deep wounds healed with scar resembling mild hypertrophic scar. The thickness of the scars from the deep wounds was significantly greater than uninjured skin and healed superficial wounds (p < 0.01). NO levels were increased at 1.5 weeks in deep wounds compared to superficial wounds and uninjured skin (p < 0.05). At 8 weeks, NO levels in deep wounds had returned to the level of uninjured tissue and superficial wounds. By 21 weeks, NO levels had decreased significantly when compared to superficial wounds (p < 0.01). There were no differences in NO levels between uninjured skin and superficial wounds at any time point (p > 0.05). Conclusions : NO production is similar in late, deep wounds on the female, red Duroc pig to that reported in the literature for human hypertrophic scar further validating this animal model. NO production is quite different after deep wounds as compared to superficial wounds in the FRDP. Early elevation in nitric oxide production might account for excessive inflammation in deep wounds that become thick scars in the FRDP. Nitric oxide regulators and effects at early stages of scar formation should be elucidated further and the FRDP appears to be a useful model.     

乳腺管状小叶癌

乳腺管状小叶癌（Tubulolobular carcinoma，TLC）最初是被作为小叶癌的管状变型。作者总结了27例TLC的组织学、免疫表型和临床特征，并与纯小管癌和经典型小叶癌进行了比较。此组患者年龄43-79岁（中位年龄60岁）。1例双侧乳腺受累，5例病变为多灶性。肿瘤直径0．5-2．5cm，色灰褐，质硬。组织学观察：TLC的肿瘤细胞形成管状和条索状两种结构模式并相互混杂，且两者比例相当（统称为管状小叶模式）。     

Does the addition of recombinant LH in WHO group II anovulatory women over-responding to FSH treatment reduce the number of developing follicles? A dose-finding study

BACKGROUND: In anovulatory women undergoing ovulation induction, addition of recombinant human LH (rLH) to FSH treatment may promote the dominance of a leading follicle when administered in the late follicular phase. The objective of this study was to find the optimal dose of rLH that can maintain the growth of a dominant follicle, whilst causing atresia of secondary follicles. METHODS: Women with infertility due to anovulation and over-responding to FSH treatment were randomized to receive, in addition to 37.5 IU recombinant human FSH (rFSH), either placebo or different doses of rLH (6.8, 13.6, 30 or 60 microg) daily for a maximum of 7 days. The primary efficacy endpoint was the proportion of patients who had exactly one follicle > or = 16 mm on hCG day. RESULTS: Among 153 enrolled patients, the five treatment groups were similar in terms of baseline characteristics. The proportion of patients with exactly one follicle > or = 16 mm ranged from 13.3% in the placebo group to 32.1% in the 30 microg rLH group (P = 0.048). The pregnancy rate ranged from 10.3% in the 60 microg group to 28.6% in the 30 microg rLH group. Adverse events were similar between groups. CONCLUSIONS: In patients over-responding to FSH during ovulation induction, doses of up to 30 microg rLH/day appear to increase the proportion of patients developing a single dominant follicle (> or = 16 mm). Our data support the 'LH ceiling' concept whereby addition of rLH is able to control development of the follicular cohort.     

c-met癌基因与乳腺癌血管生成的相关性研究

目的探讨原癌基因c-met在乳腺癌血管生成中的作用及其临床意义,为寻求抗人乳腺癌血管生成药物提供依据。方法应用SP免疫组化和计算机图像分析技术,对80例乳腺癌、20例乳腺纤维腺瘤的微血管密度和c-met蛋白表达进行定量测定。结果乳腺癌组织微血管计数、c-met阳性表达与组织学分级、淋巴结转移、肿瘤分期显著相关(P<0．01)。高微血管计数与c-net阳性表达显著相关(P<0．01)。结论原癌基因c-met激活参与调控乳腺癌的肿瘤血管生成,是一重要的预后因素。