猴疟B株感染后猴抗体水平与虫血症对蚊媒感染情况的观察

用食蟹猴疟原虫Ｂ株子孢子感染３只恒河猴，虫现前期分别是８、１０和１１ｄ，虫血症高峰时间在１４－２５ｄ，３只猴均有两个以上高峰，原虫密度波动于０．０３％－５９．６％。初次抗疟原虫抗体反应於感染后１３－１７ｄ测得，抗体高峰在感染后１６－２０ｄ。在虫血症显著期供４６批大劣按蚊血餐，获得好的感染蚊３０批，平均为１０批，好的感染蚊批的血餐时间分布在抗体滴度高峰期前为２３．３３＾，高峰期为３３．３３％，平均为     

阿苯达唑对不同发育阶段日本血吸虫的杀灭作用

采用不同剂量的阿苯达唑对小鼠体内不同发育阶段的日本血吸虫的杀灭作用进行了实验以观察。阿苯达唑的剂量为４００ｍｇ／ｋｇ．ｄ，分别于感染尾蚴后第７天、１４天、２１天和２８天一次将药液灌入鼠胃。鼠体内日本血吸虫减虫率分别为６．４４％、４２．８７％、４０．９０％和２．８７％。阿苯达唑剂量为２００ｍｇ／ｋｇ．ｄ，于感染后第７天、１４天、２１在和２８天分别灌胃，各生天一次，连续５天。其日本血吸虫减虫率分别为８     

双盲法观察甲氟喹和法西密对恶性疟原虫配子体感染性的影响

18例配子体和无性体均阳性的恶性疟患者,随机双盲分为A、B和C三组,各组均6例。A组顿服甲氟喹750mg,B组顿服甲氟喹750mg+周效磺胺1500mg+乙胺嘧啶75mg,C组顿服甲氟喹750mg+伯喹45mg。以大劣按蚊检测配子体的感染性,以志愿者试验于孢子的感染性。结果全部患者治愈,治疗后7天,A组按蚊涎腺感染率为33.3～87.5％,B组为33.3～85.7％,被叮咬的志愿者全部感染恶性疟;治疗后14天,A组按蚊感染率为0～57.1％,B组为0～60.0％;治疗后21天,A组和B组的感染率均为0。C组仅1例治疗后1天能感染蚊媒,其余各天都未能感染蚊媒。显示甲氟喹和法西嘧对恶性疟配子体感染性无明显抑制作用,可能当地恶性疟原虫对法西达有抗性,当地恶性疟的潜伏期是7～13天。     

猪尾猴疟原虫广西株在巴拉巴按蚊体内的发育

1、本文报告用巴拉巴按蚊感染猪尾猴疟原虫广西株获得十分满意的结果,胃感染率为100％,感染度极重,64.90％的阳性蚊胃卵囊数达500个以上。腺感染率为100％,且均为3～4度,尤以4度为多,占79.55％,故巴拉巴按蚊是广西株的良好媒介。 2、猪尾猴疟原虫广西株在巴拉巴按蚊体内完成孢子增殖的时间25℃时为12天,27℃时为11天,显较猪尾猴疟原虫的孢子增殖时间为短。 3、讨论了卵囊分化的时间、发育速度、卵囊最大体积和色素的排列型式,广西株虽与猪尾猴疟原虫其他虫株有所差别,这些差别仅为株的差异。     

急性散发性戊型肝炎患者血清抗体的动态检测

动态检测了３４例１９９３年６月～１９９４年５月在我校附属医院住院确诊的急性散发性戊型肝炎患者血清ＩｇＧ，ＩｇＧ抗－ＨＥＶ变化，１５例患者ＩｇＭ和ＩｇＧ同时阳性，１６例平均随访观察３０３ｄ（６个月～１５个月）。结果：ＩｇＭ，ＩｇＧ抗－ＨＥＶ阳性最早出现在黄疸后第３天，黄疸后１０ｄ阳性率分别达８６．７％和１００％，两抗体在病初１周时滴度最高，以后缓慢下降，ＩｇＭ下降较快，病程２月时所检患者的降至不能检     

食蟹猴疟原虫B株—斯氏按蚊—恒河猴猴疟模型在国内的建立

我们于1985年引进食蟹猴疟原虫B株,观察其生物学特性,建成食蟹猴疟原虫B株—斯氏按蚊—恒河猴猴疟模型。B株原虫对斯氏按蚊感染性强,斯氏按蚊叮咬输血感染后7～11天的猴,其卵囊阳性率可达80～100％;第8天卵囊成熟,第10天子孢子进腺率平均52.7％。猴感染后第7天肝切片中红外期原虫不分叶,无     

IL—6治疗小鼠肝癌的实验研究

本实验采用ＩＬ－６及ＩＬ－６ＭＭＣ瘤苗联合治疗ＭＭＣ－Ｉ类抗原阴性的Ｈ２２高转移亚系Ｈｃａ—Ｆ。第０天给小鼠皮下接种１×１０６个Ｈｃａ—Ｆ，第３天起每日注射ＩＬ—６达７天，并于第３天和第８天注射ＭＭＣ－Ｈｃａ－瘤苗，结果Ｈｃａ－Ｆ的生长受到抑制，抑瘤率达５８．９％（Ｐ＜０．０５）。     

大劣按蚊对约氏疟原虫敏感性的初步观察

本文报道用小白鼠(昆明株)接种约氏疟原虫(By265)后第三、四天供大劣按蚊吸血感染,蚊胃感染率平均为78.57％(44/56),腺感染率平均4.88％(2/41)。疟原虫经大劣按蚊传2代后,按蚊对首次血传疟原虫的腺感染率平均为13.96％(6/43)。     

滕州市消除淋巴丝虫病的防治对策与效果评价

目的分析评价滕州市消除淋巴丝虫病的防治对策。方法收集滕州市历年来淋巴丝虫病防治资料，并进行统计分析，评价不同阶段的防治措施及效果。结果防治前（1957年）流行病学调查，人群平均微丝蚴（mr）率为25．3％，慢性丝虫病患病率为5．95％，通过普查普治、重点查治、海群生药化食盐（以下简称“药盐”）防治等一系列技术措施，于1975年mf率以行政村为单位均降至1％以下，在全国率先达到了基本消灭丝虫病的标准；丝虫基本消灭后，病原、蚊媒横向监测16年，mf率为0—0．12％，蚊媒幼丝虫自然感染率为0～0．61％，mf率和蚊媒幼丝虫自然感染率自末次病原阳性次年（1985年）起至1991年7年间均降为0。病原、蚊媒及血清学纵向监测16年，mf率、蚊媒幼丝虫自然感染率，在监测第1年时分别为0．43％和0．42％，至第7年后均降至0。人群丝虫抗体阳性率由监测第8年18．42％降至第16年时的5．84％；利用各种有效治疗方法对慢性丝虫病患者进行了系统治疗与照料，丝虫性淋巴水肿、乳糜尿和鞘膜积液的患病率由防治前的5．95％下降至基本消灭后第10年后的0．97％。结论以消灭传染源为主导的综合防治策略尤其采用全民普服海群生“药盐”措施是实现消除丝虫病的关键。     

青蒿琥酯对食蟹猴疟原虫在按蚊体内发育的影响

目的 观察青蒿琥酯(Artesunste)对食蟹猴疟原虫在大劣按蚊体内发育的影响。方法 受疟原虫感染实验猴在肌注和静注青蒿琥酯各60mg之前、之后0h、2h各感染一批大劣按蚊；另取部分药前感染的大劣按蚊在感染后第3天和10．5天吸药血，另设一对照组吸正常猴血。各组实验蚊均在感染后第9天解剖蚊胃和第13天解剖涎腺，观察疟原虫在蚊体内发育情况。结果 药前组和药后0h组的蚊胃及唾腺感染阳性率均为100％，两组蚊胃卵囊平均密度、卵囊平均大小、子孢子平均感染度都无显性差异(P＞0．5)；药前组和药后2h组蚊胃卵囊平均密度有显性差异(P＜0．5)；大劣按蚊感染后第3天和10．5天吸药血组和吸正常血组，蚊胃卵囊平均密度、卵囊大小、子孢子平均感染度都无显性差异(P＞0．1，P＞0．5)。结论 青蒿琥酯对食蟹猴疟原虫在蚊体内的配子生殖、孢子增殖及子孢子进入唾腺无直接的抑制作用。     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.