1组脉络膜恶性黑色素瘤病例的脉络膜新生血管

目的:通过检查1组脉络膜黑色素瘤标本确定其上脉络膜新生血管(CNV)形成的频率,并明确恶性脉络膜黑色素瘤上的CNV是否与某些特殊的组织学肿瘤特征间存在联系。方法:本研究回顾性地分析了患脉络膜黑色素瘤眼球的脉络膜新生血管的组织学证据。结果:显微镜下显示存在脉络新生血管的     

血管内皮生长因子mRNA在激光视网膜损伤后的表达

缺血性视网膜病变是由于视网膜循环障碍而造成视网膜缺血、缺氧并诱发脉络膜新生血管形成。脉络膜新生血管膜的渗出和出血造成的视网膜中心凹功能的毁损 ,是当今内眼疾病视力丧失的主要原因。近年来研究表明 :新生血管的形成由各种生长因子和细胞因子刺激[1] ,其中血管内皮细胞生长因子在诱导眼底新生血管化中起着突出的作用[2 ] 。激光也可作为刺激因素诱发新生血管生成[3～ 5] 。本实验旨在用激光诱导眼底新生血生成的模型 ,通过原位杂交的方法观察VEGFmRNA表达的变化 ,结合新生血管生成的时相和部位 ,探讨VEGF与脉络膜新生血管发生…     

近视性脉络膜新生血管经光动力治疗后的早期新生血管桥接

背景:光动力疗法是一种治疗黄斑中心凹下脉络膜新生血管比较新的方法。维替泊芬治疗近视性脉络膜新生血管引起罕见的反应已有报道。方法:光动力治疗继发于病理性近视的脉络膜新生血管患者187只眼,3只眼在治疗前出现脉络膜新生血管的焦距分离。这3只眼按照维替泊芬标准方法治疗,用单光点覆盖新生血管芽。结果:治疗1个月后,3只眼均出现新生血管桥把两个分离的新生血管连在一起。结论:在维替泊芬治疗后,近视性脉络膜新生血管的多焦距眼可能出现意想不到的结果。多种因素,例如经过治疗和血管内皮生长因子表达的增加引起的视网膜色素上皮和脉络膜…     

老年性性黄斑变性患者维替泊芬光动力疗法对近黄斑部脉络膜新生血管的治疗

报道老年性黄斑变性患者的近黄斑部脉络膜新生血管,经维替泊芬光动力疗法治疗后的效果,7例主要表现为典型近黄斑部脉络膜新生血管形成的患者,经维泊替芬光动力疗法治疗,7例中3例视力提高、2例视力稳定,其余2例视力下降。所有患者均未观察到黄斑下脉络膜新生血管范围扩大,治疗后所有的脉络膜新生血管病变区眼底血管荧光造影检查发现无灌注。本例小规模先导研究产生的良好效果,提示对于老年性黄斑变性所致的近黄斑部脉络膜新生血管形成的患者,光动力疗法应当是一个合适的选择。老年性性黄斑变性患者维替泊芬光动力疗法对近黄斑部脉络膜新生血…     

光动力治疗脉络膜新生血管的护理体会

脉络膜新生血管又称视网膜下新生血管,脉络膜内层的玻璃膜可因变形、老化、外伤等原因而发生破裂,如果此破裂部位位于眼底后极部,尤其是黄斑区附近,脉络膜毛细血管则可由此裂隙向内生长而形成视网膜下新生血管,从而引起渗出、出血、机化,最终形成瘢痕,致使中央视力严重损伤,例如：年龄相关性黄斑变性、病理性近视及中心性渗出性脉络膜视网膜病变等均可在眼底形成脉络膜新生血管膜,是严重的致盲眼病,自2000年以来光动力疗法是目前世界公认治疗脉络膜新生血管的首选疗法,它是利用激光照射,将靶组织的光敏剂激活产生化学效应以达到治疗目的,但因护理不到位常可影响治疗效果。     

激光诱导恒河猴实验性脉络膜新生血管的研究

目的通过激光诱导恒河猴眼底脉络膜血管新生,建立与人类脉络膜新生血管类似的动物模型。方法8只成年恒河猴,采用532nm激光围绕黄斑中心凹光凝,光凝前及光凝后20d、34d、48d进行眼底彩色照相、荧光素眼底血管造影、光学相干断层扫描,光凝后49d处死动物进行组织学和免疫荧光化学染色检查。结果68.8%激光斑形成实验性脉络膜新生血管,荧光素眼底血管造影表现为早期强荧光斑,后期荧光素渗漏超越激光光斑边缘;光学相干断层扫描出现神经上皮下的高反射光团,局部视网膜增厚,病灶可维持长达48d,形成的脉络膜新生血管为含有与增殖相关的CD31、CD105染色阳性内皮细胞成分的纤维血管增殖膜并伴视网膜水肿,色素颗粒内移,外核层缺失。结论激光诱导的恒河猴脉络膜新生血管模型成模率高,模型稳定持久,是研究治疗与脉络膜新生血管相关眼底病理想的动物模型。     

光动力疗法治疗老年黄斑变性临床观察

目的　探讨单次光动力疗法治疗老年黄斑变性合并黄斑脉络膜新生血管的近期疗效。方法　回顾性分析经眼底荧光血管造影及光学相干断层扫描检查确诊的 2 0例 2 0只老年黄斑变性伴有脉络膜新生血管眼经光动力治疗的疗效。随访 3个月。以视力、眼底荧光血管造影及光学相干断层扫描检查为观察指标。结果　按最后一次随访记录分析 ,视力提高 3行者 2例 ;视力提高 2行者 3例 ;提高 1行 5例 ;视力保持不变 1 0例。 1周后眼底荧光血管造影显示 :8例以典型性为主的脉络膜新生血管荧光渗漏停止 ;1 2例轻微典型性和完全隐匿性脉络膜新生血管荧光渗漏均较治疗前减少。随访结束时眼底荧光造影显示 :以典型性为主的脉络膜新生血管 ,4例荧光渗漏停止 ,4例荧光渗漏 ;轻微典型性和完全隐匿性脉络膜新生血管发现 3例渗漏加重 ;9例荧光渗漏减少或不变。术后光学相干断层扫描检查显示浆液性神经上皮脱离明显好转。该组病例治疗过程中及治疗后均未见局部或全身不良反应。结论　光动力疗法短期内能封闭或抑制老年黄斑变性脉络膜新生血管 ,目前尚未见明显的并发症     

虹膜色素上皮移位治疗渗出性黄斑变性的3年随访研究

目的:报道20例手术切除脉络膜新生血管联合视网膜下腔自体虹膜色素上皮细胞移植术患者治疗后3年的功能和解剖结果。方法:20例患者新生血管膜切除后,将新鲜离体的自体虹膜色素上皮细胞移位至视网膜下腔。通过眼底镜、眼底血管造影、微视野检查及视力检查来随访患者。结果:经过3年追踪后,1例患者视力提高、13例患者视力无变化和3例患者视力下降。随访过程中无明显的黄斑水肿和脉络膜新生血管复发。结论:自体虹膜色素上皮细胞移植可以很好的维持3年,大多数患者可以获得稳定的视力。这些结果表明在治疗渗出性黄斑变性过程中,切除脉络膜新生血管…     

特发性脉络膜新生血管经光动力治疗后病灶扩大1例

目的:探讨1例特发性脉络膜新生血管患者光动力治疗(PDT)后病灶扩大的可能因素。方法:对1例特发性脉络膜新生血管患者经PDT治疗前后的荧光素眼底造影(FFA)和脉络膜血管造影(ICGA)进行对比。结果:PDT治疗后FFA和ICGA影像均提示病灶扩大。结论:部分特发性脉络膜新手血管PDT治疗可能无效,需结合其他治疗。     

渗出型老年性黄斑变性的荧光眼底血管造影分析

目的：用荧光眼底血管造影观察黄斑部脉络膜新生血管。方法：用日本Canon相机对30例患者（36眼）进行荧光眼底血管造影检查,并结合常规眼科检查进行分析。结果：荧光眼底血管造影图像显示渗出型老年性黄斑变性中,有典型黄斑下脉络膜新生血管24眼,隐匿型脉络膜新生血管6眼,黄斑结瘢6眼;在明确脉络膜新生血管定位和分型中,典型脉络膜新生血管呈颗粒状11眼,斑片状7眼,车轮状6眼,隐匿型脉络膜新生血管呈血管性色素上皮脱离4眼,血管性色素上皮病变2眼。结论：荧光眼底血管造影可早期发现黄斑下典型脉络膜新生血管,并能确定其位置、范围、数目及性质,从而指导临床治疗。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.