二甲双胍对大鼠血清性激素含量的影响

目的　观察二甲双胍对大鼠血清性激素含量的影响。方法　用放射免疫分析法 (RIA)观察二甲双胍对大鼠血清性激素含量的影响。结果　二甲双胍 (135mg·kg-1·d-1,灌胃 ,14d)可明显降低雌性大鼠血清黄体生成素 (LH)及雄性大鼠睾酮 (T)的水平 ,对雌性大鼠卵泡刺激素 (FSH)、雌二醇 (E2 )、孕酮 (P)的含量和雄性大鼠血清LH、FSH的含量均无显著影响。二甲双胍 (2 70mg·kg-1·d-1,灌胃 ,14d)可降低雄性大鼠血清T的含量 ,而对LH ,FSH无显著影响 ;可明显降低雌性大鼠血清LH的含量 ,升高其P ,E2 的含量。结论　二甲双胍可降低雌性大鼠LH及雄性大鼠T水平 ,升高雌性大鼠E2 ,P的含量 ,对大鼠FSH分泌无显著影响     

左旋甲状腺素钠对垂体-卵巢轴的影响

目的 研究左旋甲状腺素钠(Thyroxine,T4)对大鼠垂体-卵巢轴内分泌功能及形态的影响.方法 采用放射免疫分析法和电子显微镜技术,系统观察T4对大鼠血清性激素含量及靶腺组织形态的影响.结果 T4 0.1μg·g-1·d-1,腹腔注射,连续用药21d,可显著降低大鼠血清黄体生成素(LH)的水平(P＜0.01),而对大鼠卵泡刺激素(FSH)、雌二醇(E2)、孕酮(P)的含量无显著影响.T4 0.6μg·g-1·d-1可明显降低雌性大鼠LH,E2,P的水平(P＜0.01),对大鼠FSH的含量无显著性影响(P＞0.05).电镜观察显示,高剂量0.6μg·g-1·d-1,腹腔注射,21d组SD大鼠腺垂体促性腺细胞、卵巢内分泌细胞超微结构发生退行性改变.结论 T4大剂量长期应用对雌性大鼠垂体-卵巢内分泌功能有抑制作用,此抑制作用可能与靶腺内分泌细胞超微结构的退行性改变有关.     

赛庚啶对小鼠脑缺血再灌后学习记忆行为的影响

目的 :观察赛庚啶对小鼠脑缺血后学习记忆行为的影响。方法 :用昆明系小鼠夹闭双侧颈总动脉 ,脑缺血 15min后复灌模型 ,按组分别静脉注射赛庚啶 2mg·kg-1·d-1,尼莫地平 2mg·kg-1·d-1及对照组生理盐水 10ml·kg-1.d-1。人工常规饲养一周后 ,检测开场行为、回避反应和水迷宫试验以观察小鼠学习记忆行为的改变。结果 :赛庚啶组首次检测结果与 2 4h后再次检测结果比较均有显著差异 ,而对照组则均无显著改变。结论 :结果表明该脑缺血复灌损伤可导致记忆障碍 ,赛庚啶对小鼠脑缺血后的记忆保持有较好的改善作用     

甲状腺素对雌性大鼠血清性激素含量的影响

目的 观察甲状腺素(T4)对雌性大鼠血清性激素含量的影响.方法 采用放射免疫(RIA)分析法系统观察T4对大鼠血清性激素含量影响.结果 T4100μg/(kg·d),灌胃,连续用药21d,可显著降低大鼠血清黄体生成素(LH)的水平(P＜0.01),而对大鼠卵泡刺激素(FSH)、雌二醇(E2)、孕酮(P)的含量无显著影响.T4 600μg/(kg·d)T4可明显降低雌性大鼠LH,E2,P的水平(P＜0.01),对大鼠FSH的含量无显著性影响(P＞0.05).结论 甲状腺素大剂量、长期应用可降低雌性大鼠血清性激素的水平.     

亚急性衰老动物模型的建立及评价

目的 :应用D 半乳糖制备亚急性衰老动物模型并对模型进行深入评价和探讨。方法 :2 .5月龄SD大鼠分别腹腔注射3 0 0mg·kg-1·d-1和 5 0 0mg·kg-1·d-1的D 半乳糖生理盐水溶液 5 6d ,测定动物血清中超氧化物歧化酶 (SOD)、丙二醛 (MDA)、总胆固醇和甘油三酯水平 ,解剖动物后称取胸腺、脾脏以及雌鼠卵巢的重量。结果 :与同月龄鼠对照组相比 ,高剂量雄鼠体重明显降低 (P <0 .0 1) ,SOD活性降低 (P <0 .0 5 ) ,MDA升高 ,胸腺明显萎缩 (P <0 .0 1) ,脾脏增重 (P <0 .0 5 ) ,水平接近自然衰老动物 ;高剂量雌鼠SOD活性降低 (P <0 .0 5 ) ,卵巢有 5 4.5 %出现囊肿 ,其余指标均无明显变化 (P >0 .0 5 )。结论 :应用D 半乳糖可以成功制备亚急性动物衰老模型 ,而雄性大鼠相对于雌性更为敏感 ,因此 ,首选雄性SD大鼠制备动物模型用于衰老试验研究。     

染料木素对维甲酸模型大鼠血生化指标和骨密度的作用

目的 :探讨染料木素对维甲酸所致骨质疏松模型大鼠的影响 .方法 :取SD雄性大鼠 2 5 6只 ,随机分为正常对照组、模型组、骨疏康组 (5g·kg-1)、染料木素大、中、小剂量组(18,9,4 .5mg·kg-1) .给予维甲酸 70mg·kg-1·d-1灌胃 2wk(正常对照组除外 ) ,分别于不同时间从各组取 8只大鼠对体质量、血生化指标和骨密度等进行测定 .结果 :染料木素①可增加维甲酸模型大鼠的左股骨质量、左胫骨质量 (P <0 .0 5或P <0 .0 1) ;②使模型大鼠的血清Ca ,P ,Mg,CT水平明显降低 ,BGP ,ALP水平升高 ,与模型组有显著差异 (P <0 .0 5或P <0 .0 1) ;③在 4 .5mg·kg-1,9mg·kg-1时可明显增强模型大鼠的股骨、胫骨和腰椎L2 -4的骨密度 (P <0 .0 5或P <0 .0 1) .结论 :染料木素可明显改善维甲酸模型大鼠的骨密度和血生化指标 ,对骨质疏松有较好的疗效     

补肾毓麟汤对肾虚性生殖功能障碍大鼠生殖激素影响的实验研究

目的 观察补肾毓麟汤对模型大鼠血清生殖激素水平的影响.方法 用雷公藤多苷片造成雌、雄性生殖功能障碍大鼠模型,观察补肾毓麟汤和克罗米芬对雌、雄性大鼠血清卵泡刺激素(FSH)、黄体生成素(LH)、雌二醇(E2)、睾酮(T)的含量的影响.结果 雌性模型大鼠血清FSH、LH、E2含量与正常组比较无显著性差异,而血清T含量高于正常组(P＜0.05);补肾毓麟汤、克罗米芬均能降低血清T含量.雄性模型大鼠血清FSH含量与正常组比较无显著性差异,LH、E2含量高于正常(P＜0.05,P＜0.01),T含量低于正常组(P＜0.01);补肾毓麟汤能降低血清LH、E2含量,升高血清T含量;克罗米芬能降低血清LH含量,但对E2、T含量无明显影响.结论 雌、雄性模型大鼠血清生殖激素水平有不同程度改变,补肾毓麟汤能调整紊乱的生殖激素水平,疗效优于克罗米芬.     

麦胚提取物对去卵巢大鼠骨密度和矿物质的作用

目的　探讨麦胚提取物对去卵巢引起骨质疏松大鼠的骨密度及矿物质的影响。方法　 2 1只雌性SD大鼠随机分为假手术组、去卵巢模型组、去卵巢加麦胚提取物组 (麦胚提取物 10 0mg·kg-1·d-1) ,10周后测骨密度和骨矿物含量及血清、尿液和骨骼钙、锌、铜含量。结果　去卵巢组大鼠试验 10周后骨密度和骨矿物含量显著下降 (P <0 .0 5或P <0 .0 1) ;血清钙、铜和尿钙、锌、铜显著增高 ,而血清锌降低 ,骨骼钙、锌、铜显著下降 (P <0 .0 5 )。去卵巢加麦胚后大鼠的骨密度和骨矿物含量显著升高 ,骨骼钙、锌、铜显著升高 ,尿钙、锌、铜降低 (P<0 .0 5 )。结论　麦胚提取物可预防去卵巢大鼠骨钙、锌、铜丢失和骨密度下降     

环磷酰胺对小鼠肝细胞色素P450含量的影响

目的　了解环磷酰胺 (CP)对小鼠肝细胞色素P4 5 0含量的影响。方法　小鼠腹腔注射CP 2 0mg·kg-1·d-1和CP 4 0mg·kg-1·d-1,连续 4天。以聚乙二醇法制备微粒体 ,测定肝微粒体中P4 5 0的含量。结果　CP 2 0mg·kg-1和CP 4 0mg·kg-1两组动物肝微粒体P4 5 0含量与对照组相比明显下降 (P <0 .0 5 )。结论　CP具有抑制P4 5 0的作用     

中药大明胶囊对2型糖尿病大鼠空腹血糖作用的研究

目的　探讨大明胶囊对 2型糖尿病大鼠空腹血糖的影响。方法　建立 2型糖尿病大鼠模型 ,筛选空腹血糖值大于 16 .7mmol·L- 1 的大鼠随机分组 :大明胶囊大 (187.5mg·kg- 1 ·d- 1 )、中 (93.8mg·kg- 1 ·d- 1 )、小 (46 .9mg·kg- 1 ·d- 1 )剂量组、糖尿病模型组、苯乙双胍 (75mg·kg- 1 ·d- 1 )组 ,连续用药 14d ,用葡萄糖氧化酶法测空腹血糖值 ,同时对大明胶囊治疗前后 2型糖尿病大鼠 2 4h进食量、饮水量、体重及甘油三酯进行测定。结果　 2型糖尿病大鼠经大明胶囊灌胃给药后空腹血糖值与模型组相比有明显降低 (P <0 .0 5 ) ,并且饮水量、进食量及TG与模型组相比明显下降 (P <0 .0 5 )。结论　大明胶囊对 2型糖尿病大鼠有明显的降低空腹血糖作用 ,并且可以改善糖尿病的症状。     

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

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.     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.     

Possible Spread of adenovirus type 3 from poultry to humans ：indirect evidence from an outbreak in China

Objective:To explore the epidemiology and etiology for an outbreak of acute respiratory tract infection that occurred in one county of Jiangsu Province, China 2004. Methods: Only cases meeting the case definition were included in the study. We reviewed the medical records of the cases who were admitted to the local hospitals, interviewed cases by a standard questionnaire, and then described the epidemiotogic features and analyzed risk factors by means of a case-control study. We collected pharyngeal swab specimens and sent them to different laboratories for isolation and culture. The laboratory used different detection methods such as DIP, PCR, electron microscope examination and microneutralization assay, to identify and then type the positive specimens. Results:A total of 871 cases were reported during the period from April 18 to July 4,2004. The distribution of onset times presented two peaks, one in late May and another in middle June. The epidemic occurred mainly in the elementary and junior high schools in ten townships of one county, and the mean age of the cases was 12 years (range 7 months to 18 years). The course of the disease was acute, and was characterized by fever accompanied with sore throat and tonsillitis. The WBC count of cases was normal or elevated. The mean duration of illness was 5 days (range 2 to 12 days). No fatalities from illness were reported. A case-control study indicated that the possible risk factors were close contact with a case and/or poultry before onset and sharing of towels among members of the family. The typical CPE was observed through inoculating pharyngeal swab specimens into the HEP-2 cell cultures in different laboratories. An infection of adenovirus type 3 was verified by detecting positive specimens in different methods. Conclusion:This investigation demonstrated that the acute respiratory infection in cases was caused by adenovirus type 3. Cases occurred in over 70 schools in ten townships in 2004, and the route of transmission was possibly close contact with cases or droplet transmission.