中药冷饭团对四氯化碳致大鼠实验性肝损伤的保护作用观察

目的观察中药冷饭团对大鼠实验性肝损伤的保护作用。方法采用CCl4诱导大鼠慢性肝损伤模型,以联苯双酯作对照,检测各组大鼠肝功能、血清及肝组织MDA含量和SOD活性。结果中药冷饭团能显著降低实验性肝损伤大鼠ALT和AST活性,降低肝组织MDA含量,提高肝组织及血清SOD水平。结论中药冷饭团护肝降酶作用的机制可能与其抗脂质过氧化作用有关。     

bFGF对慢性酒精中毒大鼠肝损伤保护作用的研究

目的探讨bFGF对酒精中毒所致的肝损伤的保护作用。方法采用白酒灌胃复制慢性酒精中毒大鼠模型。测定肝组织ATP酶活力、SOD活力和MDA含量及血清ALT、AST活性。结果与正常对照组比较,酒精中毒模型组大鼠血清ALT、AST活性明显升高,肝组织ATP酶和SOD活力显著降低而MDA含量明显升高;经过bFGF治疗后血清ALT、AST活性明显降低,肝组织中ATP酶和SOD活力显著升高而MDA含量显著降低。结论 bFGF对慢性酒精中毒所致的肝损伤具有保护作用。     

黄芪注射液对大鼠肠缺血再灌注肝损伤的保护作用

目的 探讨黄芪注射液对大鼠肠缺血再灌注所致肝损伤的保护作用及机制。方法 Wistar大鼠随机分为假手术组、肠缺血再灌注组、黄芪组。夹闭肠系膜上动脉1h，再灌注3h后分别测定各组血清丙氨酸转移酶（ALT）、谷胱甘肽S－转移酶（GST）活性、肝组织MDA含量和SOD活性，并观察各组肝组织病理学改变。结果 大鼠肠缺血1h再灌注3h后，血清ALT、GST活性、肝组织MDA含量明显升高、肝组织SOD活性明显降低。黄芪注射液能明显改善肠缺血再灌注肝损伤大鼠血清ALT和GST的活性、肝组织的SOD活性和MDA含量。肝组织病理检查结果也表明，黄芪注射液对肠血再灌注肝损伤大鼠有一定的保护作用。结论 黄芪注射液对大鼠肠缺血再灌注肝损伤的保护作用与其抗氧化作用有关。     

肝达复颗粒对四氯化碳肝损伤大鼠和小鼠影响的实验研究

目的:研究肝达复颗粒对四氯化碳肝损伤大鼠和小鼠的保肝作用。方法:以灌胃CCl4复制小鼠急性肝损伤模型、皮下注射CCl4复制大鼠急、慢性肝损伤模型。以血清谷丙转氨酶(ALT),谷草转氨酶(AST),肝组织超氧化物歧化酶(SOD),谷胱甘肽(GSH)、丙二醛(MDA)含量、肝羟脯氨酸(Hyp)、肝组织病理学检查等为指标,观察肝达复颗粒的抗肝损伤作用。结果:肝达复颗粒对CCl4造成的急性肝损伤大鼠和小鼠ALT,AST活性升高有显著的降低作用,可显著降低大鼠肝组织MDA水平,升高SOD水平。肝达复颗粒可显著降低CCl4慢性肝损伤大鼠ALT,AST活性,升高肝组织SOD、GSH水平,降低MDA、Hyp水平。结论:肝达复颗粒对四氯化碳肝损伤大鼠和小鼠有显著的保肝作用。     

丹酚酸B对被动吸烟大鼠肝损伤的保护作用

[目的] 探讨丹酚酸B对被动吸烟大鼠肝损伤目的保护作用及其机制.[方法] Wistar大鼠,随机分为3组,即正常对照组、炯熏组、丹酚酸B预防组.分别测定3组大鼠血清巾谷丙转氨酶(ALT)、谷草转氨酶(AST)及乳酸脱氧酶(LDH)目的含量.同时分析血清及肝组织中超氧化物歧化酶(SOD)目的活性及丙二醛(MDA)含量目的改变.[结果] 烟熏组与正常对照组相比,大鼠血清中AST、ALT、LDH、MDA及肝组织中MDA含量均显著增加,SOD活性显著降低(P<0.01);经丹酚酸B预处理后,与烟熏组相比,血清中AST、ALT、LDH、MDA含量及肝组织中MDA含量均降低,而SOD活性增高(P<0.05).[结论] 丹酚酸B对被动吸烟大鼠肝损伤有一定目的保护作用,其机制可能主要与抗氧自由基目的损伤有关.     

草棉花花瓣不同提取物对实验性肝损伤小鼠的保护作用

目的:研究草棉花花瓣采用不同工艺提取的产物提取物Ⅰ和提取物Ⅱ(FGF-Ⅰ、FGF-Ⅱ)对扑热息痛引起的实验性肝损伤是否有保护作用。方法:选用昆明种小鼠,采用腹腔注射扑热息痛的方法造成肝损伤动物模型;观察FGF-Ⅰ和FGF-Ⅱ对血清谷丙转氨酶(ALT)、谷草转氨酶(AST)活性及肝组织匀浆超氧化物歧化酶(SOD)、丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-PX)水平的影响。结果:FGF-Ⅰ和FGF-Ⅱ对小鼠血清ALT、AST活性均有降低作用。FGF-Ⅰ对肝组织SOD、GSH-PX活性没有影响,但可以降低肝组织MDA含量。FGF-Ⅱ可以增加肝组织SOD活性、降低MDA含量、增加GSH-PX活性。结论:FGF-Ⅰ和FGF-Ⅱ均有一定的保肝作用,但是FGF-Ⅱ作用优于FGF-Ⅰ。     

乙酰半胱氨酸对急性酒精性肝损伤大鼠的保护作用

目的探讨乙酰半胱氨酸对酒精所致大鼠急性肝损伤的保护作用。方法采用酒精灌胃法制作急性酒精性肝损伤大鼠模型。50只雄性Wistar大鼠随机分为5组（n=10）：正常对照组、急性酒精性肝损伤模型组、乙酰半胱氨酸低、中、高剂量（150,300,600mg／kg）组。测定并比较各组大鼠肝脏指数,血清中丙氨酸氨基转移酶（ALT）、天门冬氨酸氨基转移酶（AST）活性以及肝组织中超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH—Px）活性与丙二醛（MDA）含量;并观察光镜下肝组织病理学改变。结果与正常组比较,模型组大鼠肝组织SOD、GSH—Px活性降低（均P〈0．05）,血清ALT、AST活性和肝组织MDA含量增加（均P〈0．05）。治疗结束后,与模型组比较,乙酰半胱氨酸各剂量组急性酒精性肝损伤大鼠肝组织SOD、GSH—Px活性均升高（均P〈0．05）,血清A岍、AST活性和肝组织MDA含量降低（均P〈0．05）,并能不同程度地改善肝脏组织病理损伤。结论乙酰半胱氨酸能够有效地改善肝功能,降低脂质过氧化物水平,对酒精所致大鼠急性肝损伤具有保护作用。     

姜黄素固体分散体对大鼠肝损伤的防治作用

目的:研究以聚乙二醇6000为载体制备的姜黄素固体分散体对酒精性大鼠肝损伤的防治作用。方法:SD大鼠灌胃酒脂乳剂建立大鼠酒精性肝损伤模型,同时灌胃给予姜黄素固体分散体(CurSD),测定大鼠血清及肝组织中相关指标,计算肝指数,观察肝脏组织学变化。结果:姜黄素固体分散体能显著降低酒精性肝损伤大鼠血清中甘油三酯(TG)含量并降低血清天冬氨酸氨基转移酶(ALT)、丙氨酸氨基转移酶(AST)活性;降低肝组织中丙二醛(MDA)含量,提高肝组织中超氧化物歧化酶(SOD)活性。结论:以聚乙二醇为载体制备的姜黄素固体分散体对酒精性大鼠肝损伤具有防治作用。     

决明子乙醇提取物对大鼠急性肝损伤的保护作用

[目的]探讨决明子乙醇提取物对D-氨基半乳糖所致大鼠急性肝损伤的保护作用.[方法]灌胃给予给药组大鼠10,5 g/kg决明子乙醇提取物,阳性对照组大鼠给予0.2 g/kg联苯双酯,正常对照组及模型对照组大鼠给予等体积生理盐水,连续5 d.实验第4日给予模型对照组和给药组大鼠腹腔注射0.5 g/kg D-氨基半乳糖,给予正常对照组大鼠腹腔注射等体积生理盐水.24 h后摘眼球取血,剖取肝组织,制备肝线粒体悬浮液,分别测定血清ALT,AST,SOD,GSH-PX活性及MDA含量,测定肝线粒体SOD,GSH-PX活性及MDA含量.[结果]决明子乙醇提取物可显著抑制D-氨基半乳糖所致急性肝损伤大鼠血清中ALT,AST质量浓度的升高,并提高血清及肝线粒体SOD,GSH-PX活性,降低MDA含量.[结论]决明子乙醇提取物对D-氨基半乳糖所致大鼠急性肝损伤具有保护作用.     

芝麻素对大鼠慢性肝损伤的保护作用

目的：探讨芝麻素对大鼠慢性肝损伤的保护作用及可能机制。方法：采用大鼠四氯化碳（CCl4）慢性肝损伤模型,观察芝麻素对慢性肝损伤大鼠血清ALT、AST水平以及肝组织匀浆SOD、MDA水平的影响,并观察肝组织病理学改变。结果：芝麻素能显著降低CCl4所致大鼠慢性肝损血清中ALT、AST含量;能升高CCl4所致大鼠慢性肝损肝组织中SOD,并能降低MDA的含量;病理结果显示达芝麻素能减轻慢性肝损伤的程度。结论：芝麻素对慢性肝损伤有明显的保护作用,其机制可能与抗脂质过氧化有关。     

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.