视网膜下液生长因子含量与增生性玻璃体视网膜病变关系

目的 探讨生长因子与增生性玻璃体视网膜病变形成和发展的关系。方法 选４１例孔源性视网膜脱离伴ＰＶＲ患者,采用放射免疫方法测其ＴＮＦ,ＦＧＦ,ＴＧＦ－β,ＥＧＦ的含量。结果 ＰＶＲ患者视网膜下液中ＴＮＦ,ＥＧＦ,ＦＧＦ浓度明显高于对照组（Ｐ〈０．０５）。ＴＮＦ,ＥＧＦ,ＦＧＦ浓度Ｃ组高于Ｂ组,Ｂ组高于Ａ组,差异有显著性（Ｐ〈０．０５）。视网膜下液中ＴＮＦ,ＥＧＦ浓度各组高于血浆中ＴＮＦ,ＥＧＦ浓度,     

干眼症结膜印迹细胞学研究

目的 :探讨结膜印迹细胞学检查 (CIC)在干眼诊断中的作用。方法 :对 45人 90眼正常组和 80人16 0眼实验组除采用泪液分泌实验I(S -I-T)、泪膜破裂时间 (BUT)、虎红染色 (RBS)及荧光素染色 (FLS)计分等常用眼表泪功能检查外 ,重点采用CIC ,通过观察结膜上皮细胞情况及杯状细胞数来了解正常眼、干眼的泪膜粘液层的情况。结果 :印迹细胞学分级及杯状细胞数组间均有显著的差异 ,正常组分级主要集中于 0级 ;非SS干眼组的分级主要集中于 1级和 2级 ;SS干眼组的分级主要集中于 2级及 3级。杯状细胞与虎红色计分呈负相关。结论 :结膜印迹细胞学检查通过分级、观察杯状细胞数变化 ,了解泪膜粘液层的情况可用于区分正常人与干眼症患者并可了解干眼的病程变化     

高度近视眼白内障手术疗效观察

目的　分析高度近视眼白内障手术效果。方法　高度近视合并白内障病例共１９１ 例（２７９ 只眼）,行白内障术后３ｍｏ以上,随访视力、眼屈光度及并发症,计算测量误差及ＳＲＫ－ＩＩ公式误差。结果　术后矫正视力０ ．５ 者２００ 只眼,占７１．７ ％ ;矫正视力＜ ０．１ 者１３ 只眼,占４ ．７ ％ － 眼轴越长,近视性眼底病变越重。术后发生视网膜脱离２ 只眼（０ ．７％） 。眼轴长度测量误差值平均为０．５３ｍｍ ,ＳＲＫ－ＩＩ公式计算的平均绝对屈光误差值为１．１２Ｄ。结论　高度近视眼白内障手术效果较一般人群差,且眼轴越长效果越差。     

SLCmRNA预测胃癌病人淋巴结微转移临床病理学意义

目的探讨SLCmRNA预测淋巴结微转移对胃癌病人的临床意义。方法分别用SLCmRNART—PCR方法、细胞角蛋白免疫组化染色法、常规病理学方法检测2003—2006年间手术的35例胃癌病人的523个淋巴结。结果免疫组化和常规组织学检查发现325个淋巴结转移的标本,SLCmRNA测定均明显减弱,而SLC还发现14例（40％）胃癌可能有63个淋巴结（12％）存在隐匿性转移（SLCmRNA表达减弱,但免疫组化和常规组织学检查未证实淋巴结转移）,低分化腺癌微转移发生率高于高分化腺癌。结论将淋巴结的SLCmRNA与细胞角蛋白特殊免疫染色以及常规组织学检查结合起来,可以更准确地判断胃癌病人的预后和复发概率。     

新疆乌鲁木齐市常住居民甲状腺功能、甲状腺自身抗体与尿碘变化的分析

目的 了解新疆乌鲁木齐市居民甲状腺疾病知晓率及年龄分布的差异, 分析甲状腺功能、甲状腺自身抗体与尿碘相关性及其变化规律。方法 2013年5月采用横断面方法随机抽取乌鲁木齐市1 995名常住居民, 其中健康成年人1 906名, 年龄18~84岁, 平均(46.3±14.2)岁, 男性占30.4%, 女性占69.6%。采集一次性随机晨尿10 ml测定尿碘, 静脉血测定促甲状腺素(TSH)、血清游离甲状腺素(FT4)、游离三碘甲状腺原氨酸(FT3)、甲状腺球蛋白抗体(TgAb)、甲状腺过氧化物酶抗体(TPOAb)。结果 (1)调查居民中新诊断甲状腺功能异常者213例(11.2%, 其中女性占78.4%), 甲状腺功能亢进(甲亢)者占2.7%, 甲状腺功能减低(甲减)者占8.5%;TgAb阳性率为23.2%, TPOAb阳性率为16.6%;人群尿碘M=134.5 μg/L, 人群中碘缺乏占32%, 碘适宜占58%, 碘过量占10%;甲状腺功能正常组和异常组比较、抗体阳性组与阴性组比较其尿碘水平的差异均无统计学意义。(2)将人群划分18~、45~和≥60岁3个年龄组, 则显示随年龄增长TSH水平有明显差异, 且女性高于男性(P<0.001);甲状腺功能正常人群中, TSH水平为抗体阳性组明显高于阴性组(P<0.000 1)。(3)≥60岁与<60岁人群比较, 甲减患病率显著增加(P=0.008), 但甲亢患病率无明显差别, 抗体阳性率亦无明显差异。结论 乌鲁木齐市社区居民甲状腺功能、自身抗体与尿碘水平无明显相关, 女性甲状腺功能异常、抗体阳性率均高于男性, 抗体阳性组TSH水平明显高于阴性组, 老年人群甲减患病率显著增高, 应对该人群定期监测。     

急性坏死性胰腺炎大鼠胰腺高迁移率族蛋白-1的表达及意义

目的探讨急性坏死性胰腺炎(ANP)大鼠模型胰腺组织高迁移率族蛋白-1(HMGB1)的表达及其意义。方法72只大鼠随机分成3组,即对照组、ANP组和正丁酸钠治疗组(治疗组)。逆行性胰胆管注射5%牛磺胆酸钠建立ANP模型。ELISA法检测血清TNF-α和IL-1β水平;RT-PCR法检测胰腺组织HMGB1 mRNA的表达,并观察其病理变化。结果ANP组血清TNF-α和IL-1β水平在ANP建模后6h达高峰,12h下降。ANP组大鼠胰腺组织HMGB1 mRNA表达水平在ANP后12h明显升高,至24h仍维持在较高水平。治疗组胰腺组织HMGB1 mRNA表达水平在ANP后12,24h明显低于ANP组(P<0.05),且同期胰腺损伤比ANP组轻(P<0.05)。建模后24h血清TNF-α和IL-1β水平ANP组与治疗组间差异无显著性。结论HMGB1作为晚期炎症因子参与了ANP的全身炎症反应。HMGB1抑制剂正丁酸钠能降低ANP大鼠胰腺组织HMGB1基因表达水平,减轻ANP胰腺组织的损伤。     

盐酸氯丙嗪生物黏附缓释片的制备及评价

目的：制备盐酸氯丙嗪生物黏附缓释片,并对该缓释片进行体外释放性能和黏附性评价。方法：建立释放度紫外分析方法与黏附力测定方法。采用粉末直接压片压制盐酸氯丙嗪黏附缓释片,采用正交试验以释放度为指标,筛选最优处方。按照上述筛选出的最优处方制备盐酸氯丙嗪黏附缓释片,进行体外释放度与黏附力综合评价。结果：盐酸氯丙嗪黏附缓释片的释放度在1,4,8,12 h释放度分别是23.45%,57.89%,79.56%,95.21%。生物黏附缓释片在胃和肠黏附力分别为30.4 g·cm^-2和49.4 g·cm^-2,均大于普通片,且与肠的黏附力大于胃。结论：盐酸氯丙嗪生物黏附缓释片在12 h内累积释放度为95%左右,与胃肠黏膜有较大的黏附力,能满足生物黏附制剂的要求。     

高效液相色谱法测定舒血宁注射液总黄酮醇苷的含量

[目的]建立舒血宁注射液中总黄酮醇苷含量测定方法,为其质量控制提供技术手段。[方法]采用ExtendC18柱(4.6 mm×250 mm,5μm),以乙腈-0.1%甲酸水(v/v)为流动相,梯度洗脱,流速为1 mL/min,进样体积为15μL,柱温为35℃,检测波长为360 nm。[结果]槲皮素、山奈酚及异鼠李素3种黄酮的分离及线性关系良好;精密度,重复性和稳定性RSD均都小于5%;平均回收率在99.5%~100%之间且RSD均值小于5%。30批舒血宁注射液中总黄酮醇苷平均含量为1.06 mg/mL且无统计学差异。[结论]本方法简便、准确、可靠,适用于舒血宁注射液中总黄酮醇苷含量的测定,为舒血宁注射液质量控制提供了科学依据。     

Changes of ocular higher order aberration in on- and off-eye of rigid gas permeable contact lenses.

PURPOSE: To investigate ocular higher order aberration (HOA) changes caused by rigid gas permeable (RGP) contact lens (CL) wear. METHODS: Twenty-two eyes of 22 myopic patients and 14 eyes of 14 keratoconic patients who were fitted with an RGP CL were enrolled to examine ocular HOAs using a Hartmann-Shack wavefront sensor before and after RGP wear. Root mean square (RMS) values and Zernike coefficients in RGP-on and RGP-off eyes were compared for both myopic and keratoconic eyes, or between patient groups divided according to their prefitted total HOA value (RMS<0.33 microm or>or=0.33 microm in myopic eyes and RMS<0.46 microm or>or=0.46 microm in keratoconic eyes). All HOA values were recomputed for a 4-mm pupil for comparison purposes. RESULTS: In keratoconic eyes, RGP CL changed the direction of vertical coma from -0.185 to 0.134 microm (p=0.024). In the low HOA myopic group, total HOA increased from 0.23 to 0.35 microm (p=0.006) by RGP CL wear, mainly due to increased coma aberration from 0.0951 to 0.2146 microm (p=0.006). The direction of vertical coma changed from the inferior to superior cornea in the low HOA group (p=0.020). In the high HOA keratoconic group, total HOA decreased from 0.54 to 0.36 microm (p=0.049), and the direction of the vertical coma changed from the inferior to superior cornea (p=0.049). CONCLUSIONS: RGP CL wear may enhance or reduce HOA based on original existing ocular aberration mainly through directional changes in vertical coma.     

Underdevelopment of optic radiation in children with amblyopia: a tractography study

PURPOSE: To detect the abnormalities of the optic radiation (OR) in children with amblyopia by diffusion tensor imaging (DTI) and tractography. DESIGN: Prospective, nonrandomized clinical trial. METHODS: Fourteen children with amblyopia and 14 normally sighted children underwent DTI scanning. After the ORs were reconstructed by using tractography algorithm, voxels through which the anterior parts of ORs passed were determined for their values of fractional anisotropy (FA). The paired t test was applied to compare their mean FA values of right OR and left OR in the control group. For the amblyopia group, analysis of variance was conducted to determine the effect of laterality and vision status on the FA values. In addition, the voxel numbers of anterior and posterior parts of both ORs were calculated. The Student t test was used to compare the average FA of bilateral ORs and voxel numbers between the two groups. RESULTS: Comparison demonstrated left-higher-than-right asymmetry in both amblyopic children and normal children. We found no significant difference of average FA between the amblyopic group (0.4832 +/- 0.0225) and control group (0.4770 +/- 0.0273). Voxel numbers of the anterior parts of both ORs were not significantly different between the two groups, whereas voxel numbers of their posterior parts in the controls were more than that of amblyopic children. CONCLUSION: Tractography showed more voxels in the posterior ORs of normal children than in the amblyopic children, indicating that normal children have better development of the ORs. The underdevelopment of the ORs might reflect the dysfunction of visual cortex in children with amblyopia.