豫医无毛小鼠寿命观察

目的 :通过对豫医无毛小鼠寿命的观察 ,探讨突变基因对无毛小鼠寿命的影响。方法 :在正常生产繁殖状态下 ,随机选取无毛小鼠雌雄各 50只 ,杂合子有毛小鼠雌雄各 2 5只 ,饲养条件、营养状况、实验方法等均相同 ,观察每只小鼠自然衰老的过程 ,并计算出各自的寿命。结果 :纯合子无毛小鼠平均寿命雌性为 (30 3 .3± 35 .0 )d、雄性为 (2 61 .6± 41 .2 )d ,杂合子有毛小鼠平均寿命雌性为 (382 .7± 35 .7)d、雄性为 (353 .0± 37.2 )d。纯合子无毛小鼠与杂合子同性别有毛小鼠寿命相比差异有统计学意义 (P <0 .0 1 )。结论 :突变基因可能对无毛小鼠的寿命有影响 ,豫医无毛小鼠可作为衰老模型供科研应用     

刺五加对黑腹果蝇寿命的影响

目的:研究刺五加对黑腹果蝇寿命的影响。方法:在培养基中加入刺五加煎剂,培养黑腹果蝇,观察半数死亡时间、平均寿命以及最高寿命与对照间差异程度。结果:5%刺五加煎剂能有效延长雌雄果蝇半数死亡时间、最高寿命以及雌果蝇平均寿命。结论:刺五加有延缓衰老的作用。     

酞酸二丁酯对黑腹果蝇寿命及SOD和MDA的影响

目的 研究环境污染物酞酸二丁酯（Di-n-butyl phthalate,DBP）对黑腹果蝇寿命及抗氧化系统的影响。方法 用生存试验检测果蝇寿命,记录不同剂量DBP染毒组果蝇生存数和死亡数,并测定DBP不同染毒浓度和不同染毒时间果蝇体内超氧化物歧化酶（superoxide dismutase,SOD）活性及丙二醛（malondialdehyae,MDA）含量。结果 染毒后各剂量组雌雄果蝇半数死亡时间均缩短,平均寿命及平均最高寿命与对照组相比均有显著性差异（P〈0．05或P〈0．01）,并呈现出明显的剂量——反应关系。不同浓度染毒组雌雄果蝇与对照组相比,SOD活性显著降低（P〈0．05）,MDA含量显著升高（P〈0．05）;雌雄果蝇在不同染毒时间的SOD活性和MDA含量与对照组相比差异均有显著性（P〈0．01或P〈0．05）。结论 DBP可引起果蝇体内SOD活性下降,MDA含量上升,破坏果蝇体内的抗氧化系统,进而使果蝇寿命缩短,有很强的促衰老作用。     

碧萝芷对黑腹果蝇寿命影响的研究

目的用黑腹果蝇的生存实验来观察碧萝芷(pycnogenol)的延缓衰老功能.方法收集8 h内羽化而未交配的果蝇进行雌雄分组,每个浓度组200只果蝇,共4个浓度组,每2天记录果蝇存活数,每4天更换培养基,直至果蝇全部死亡.结果雄性果蝇的平均寿命指标中4个浓度组都显示了阳性(P＜0.01),平均最高寿命组的0.0025%浓度雌性果蝇为阳性(P＜0.05).结论表明碧萝芷具有延缓衰老的作用非常明显.     

吐温-80对果蝇急性毒性及寿命的影响

目的 观察吐温-80对果蝇急性毒性及寿命的影响。方法 急性毒性试验取2d龄果蝇分为4组,分别给予0、0.04%、1%、25%吐温-80溶液连续喂饲3d,记录3d累计死亡数,计算半数致死浓度(LC50);生存试验取4d龄果蝇分为5组,给予含0、0.07%、0.20%、0.60%、1.80%吐温-80的培养基喂饲,每2d记录果蝇存活数,计算平均寿命和平均最高寿命。结果 雌蝇LC50为1.70%,雄蝇LC50为0.54%,急性毒性试验中雄性果蝇的死亡率与吐温-80浓度呈正相关(P<0.01),生存试验中各浓度组与对照组比较平均寿命均见到缩短。结论 吐温-80对果蝇存在急性毒性与缩短寿命作用。     

丙烯酰胺对黑腹果蝇寿命及SOD和MDA的影响

目的 研究丙烯酰胺(acrylamide)对黑腹果蝇寿命及抗氧化系统的影响.方法 经口喂饲果蝇不同浓度丙烯酰胺,通过急性毒性试验测定丙烯酰胺半数致死浓度(median lethal dose,LC50),采用生存实验记录果蝇寿命,测定丙烯酰胺不同染毒浓度和时间果蝇体内超氧化物歧化酶(superoxide dismutase,SOD)活性及丙二醛(maleic dialdehyde,MDA)含量.结果 急性毒性试验中,在95%置信度下丙烯酰胺溶液对雌性果蝇的LC50为201.00±24.68 mg/L,对雄性的LC50为20.00±1.21 mg/L.生存试验中染毒后各剂量组雌雄果蝇半数死亡时间、平均寿命及平均最高寿命与对照组相比均缩短(P＜0.05或P＜0.01),呈现明显的剂量-反应关系.不同浓度染毒组雌雄果蝇在不同染毒时间与对照组相比,SOD活性显著降低(P＜0.05);MDA含量显著升高(P＜0.05),存在剂量-反应关系.结论 丙烯酰胺可促进果蝇体内脂质过氧化反应、破坏果蝇体内抗氧化系统的平衡,可能是果蝇寿命缩短的原因之一.     

鲨烯复合剂延缓衰老作用的研究

目的:研究鲨烯复合剂的延缓衰老作用。方法:采用自制的鲨烯复合剂,进行高、中、低3个剂量组的果蝇生存试验和SD大鼠生化指标测定。结果:鲨烯复合剂能明显增加SD大鼠超氧化物歧化酶(SOD)的活性,高剂量组SOD活力为(181.6±19.9)mg/L,与老年对照组的(117.6±18.8)mg/L相比,差异显著;能显著降低血中丙二醛(MDA)含量,高剂量组MDA为(1.39±0.28)mmol/L,与老年对照组(2.63±0.48)mmol/L相比,差异显著;能延长果蝇的半数死亡时间、平均寿命和平均最高寿命。半数死亡时间可延长至53-65d,平均寿命延长至(53±12)-(63±12)d,平均最高寿命延长至(72±3)-(81±2)d。结论:鲨烯复合剂具有明显的延缓衰老作用。     

低浓度甲苯对果蝇寿命的影响(摘要)

目的为观察甲苯对果蝇寿命的影响。方法采用黑腹果蝇Ｏｒｅｐｏｎ／Ｃ品系,分别在培养管中以０、１００、３７５ｍｇ／ｍ３浓度甲苯染毒,观察果蝇生存情况。结果随染毒浓度增大,雌雄两性果蝇均表现为平均生存时间（平均寿命）显著缩短。３个浓度组中,雄性果蝇分别减寿１２．９％、１５．４％和２２．７％;雌性果蝇分别减寿７．５％、１３．７％和２６．６％,有明显的浓度—反应关系。从果蝇的生存曲线来看,随着观察时间的推移,可以观察到雌雄果蝇生存总数均逐渐下降,且随浓度增加,下降速度加快,生存曲线终止时间（最长寿命）提前。结论在这些浓度下,甲苯可以缩短果蝇寿命,加速果蝇老龄化的速度。     

胭脂红对黑腹果蝇寿命及SOD和MDA的影响

目的研究人工合成偶氮类色素胭脂红对黑腹果蝇的寿命及抗氧化系统的影响。方法经口喂饲果蝇不同浓度胭脂红,通过急性毒性试验测定胭脂红半数致死浓度(median lethal dose,LC50),采用生存试验检测果蝇寿命,测定不同时间果蝇体内总超氧化物歧化酶(superoxide dismutase,SOD)活性及丙二醛(maleic dialdehyde,MDA)含量。结果急性毒性试验中,胭脂红浓度与雌雄果蝇的死亡率呈剂量-反应关系。生存试验中各浓度组雌雄果蝇的半数死亡时间、平均寿命及平均最高寿命均较对照组缩短(P<0.05或P<0.01),且存在剂量-反应关系。随着胭脂红染毒时间的延长和染毒浓度的增加,雌雄果蝇体内SOD活力明显下降、MDA含量明显升高(P<0.05),呈剂量-反应关系。胭脂红对果蝇的毒性作用存在性别差异。结论胭脂红可促进果蝇体内脂质过氧化反应、破坏果蝇体内抗氧化系统的平衡,可能是果蝇寿命缩短的原因之一。     

黄连素与钙剂合用治疗病态窦房结综合征——附32例疗效观察

目的 :探讨黄连素与钙剂合用对病态窦房结综合征的治疗作用。方法 :对 3 2例病态窦房结综合征患者 ,口服黄连素片 0 .4～ 0 .6g ,每日 3次 ,3周为一疗程。 1周后同时加用 10 %葡萄糖酸钙 10～ 2 0ml加 5 %葡萄糖液或 0 .9%氯化钠注射液 2 5 0～ 5 0 0ml静滴 ,10～ 14天为一疗程。结果 :治疗后最长窦性R -R间期、最短窦性R -R间期分别由(1.84± 0 .40 )s、(0 .74± 0 .15 )s缩短至 (1.65± 0 .61)s(P <0 .0 5 )、(0 .64± 0 .0 8)s(P <0 .0 1)。 2 4小时平均心率、总心搏数分别由 (5 3 .18± 5 .61)次 /分、(73 972 .5 8± 82 3 2 .83 )次 /分增至 (5 5 .71± 5 .0 3 )次 /分 (P <0 .0 5 )、(7893 2 .0 0±7192 19)次 /分 (P <0 .0 1)。窦性停搏≥ 2s的长R -R间期由 (2 .77± 1.5 2 )s缩短至 (2 .2 0± 1.15 )s(P <0 .0 5 )、长R -R间期发作次数由 (16.5 8± 12 .72 )次 /分减少至 (5 .0 8± 5 .3 6)次 /分 (P <0 .0 1)。 3 2例中 ,显效 9例 (2 8% ) ,有效 15例 (4 7% ) ,无效 8例 (2 5 % ) ,总有效 2 4例 (75 % )。结论 :黄连素与钙剂合用对窦房结功能改善有一定作用 ,无明显副作用 ,远期疗效有待观察     

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.