AIM:To study the effects of isoproterenol (Iso) on cardiac fibrosis and related cytokines in rats. METHODS:20 SD rats were divided into control and Iso group in random, with 10 rats each group. After injected Iso, cardiac histology was observed and cardiac function, collagen volume fraction (CVF), content of collagen protein and the concentrations of Angiotensin Ⅱ (Angll) and nitrogen monoxide (NO) were measured in the two groups. RESULTS:Compared with control group, microscopic examination showed that fibrosis increased in Iso group. Iso did decrease cardiac function and NO levels and increase CVF, content of collagen protein and AngII levels. Left ventricular pressure maximal rate of rise (+ dp/dt_(max)) and left ventricular systolic pressure (LVSP) were not significantly different from that of control group. CONCLUSIONS:Iso can induce myocardial fibrosis and change levels of related cytokines in rats.

The activity of erythrocyte membrane Na-pumping K~+-activated pera-nitro-phenylphosphatase (K~+-pNPPase) and red cell deformability (RCD) were stndied in 50adult patients with non-insulin-dependent diabetes mellitus (NIDDM). RCD was expressedas red blood cell filtration index (RBC-IF). In comparison with the healthy subject, theactivity of erythrocyte membrane Na-pumping K~+-pNPPase was significantly decreased,and RBC-IF was significantly increased. The above-mentioned changes were more severein NIDDM with retinopathy than those without. There was a very close negative corre-lation between Na-pumping K~+-pNPPase and RBC-IF. These results indicated that thedecrease of erythrocyte membrane Na-pumping K~+-pNPPase activity might be an importantfactor fot the decrease of RCD.

After the connotation and application of Lib2.0 technology were described, how to construct the subject service platform in Library of Second Military Medical University using Lib2.0 technology was elaborated and the service-oriented subject service platform construction plan was proposed .

0.998. The detection limits were in the range of 16-40 ng/L(S/N=3). The quantitative detection limits were in the range of 45-105 ng/L(S/N=10) with recovery percentages ranging from 87.6% to 106% and the relative standard deviations was lower than 3%. Conclusion The method was proved to be satisfactory in precision,accuracy and sensitivity and applicable to the daily test of estrogens in water.

Aim To investigate whether Ca2+/calmodulin-dependent kinase Ⅱ(CaMKⅡ)contribute to tumor necrosis factor ?(TNF-?)-induced cardiomyocyte hypertrophy.Methods The protein content was assayed with Lowry's method.The cardiomyocytes volumes were measured by computer photograph analysis system.The protein synthesis was assayed with[3H]-lencine incorporation method.[Ca2+]i transient was measured by Till image system by cell-loading Fura-2/AM.The expression of CaMKⅡ?B was determined by Western blot.Results ① TNF-? significantly induced the increase of protein content,[3H]-leucine incorporation and cell size;These responses were significantly suppressed by KN93,a selective CaMKⅡ inhibitor.② TNF-? increased the amplitude of the spontaneous Ca2+ transients in cultured ventricular myocytes from the neonatal rat;CaMKⅡ inhibitor KN93 can suppress the elevation induced by TNF-?.③ TNF-? significantly increased the expression of CaMKⅡ?B.Concluslon CaMKⅡ signal pathway are involved in TNF-?-induced cardiomyocyte hypertrophy in rats.

Aim To investigate whether Ca~(2+)/calmodulin-dependent kinase Ⅱ(CaMKⅡ)contribute to tumor necrosis factor α(TNF-α)-induced cardiomyocyte hypertrophy.Methods The protein content was assayed with Lowry's method.The cardiomyocytes volumes were measured by computer photograph analysis system.The protein synthesis was assayed with[~3H]-lencine incorporation method.[Ca~(2+)]_i transient was measured by Till image system by cell-loading Fura-2/AM.The expression of CaMKⅡδ_B was determined by Western blot.Results ① TNF-α significantly induced the increase of protein content, [~3H]-leucine incorporation and cell size;These responses were significantly suppressed by KN93, a selective CaMKⅡ inhibitor.② TNF-α increased the amplitude of the spontaneous Ca~(2+) transients in cultured ventricular myocytes from the neonatal rat;CaMKⅡ inhibitor KN93 can suppress the elevation induced by TNF-α.③ TNF-α significantly increased the expression of CaMKⅡδ_B.Concluslon CaMKⅡ signal pathway are involved in TNF-α-induced cardiomyocyte hypertrophy in rats.

Aim To study effects of pioglitazone on cardiac fibroblast proliferation induced with high glucose and high insulin.Methods The neonatal rat cardiac fibroblasts were cultured and treated with different factors.The cellular number was determined by crystal violet uptake;the DNA synthesis was assayed with thymidine intake method;the percentage of S+G_2+M in the cell cycle was determined by flow cytometry.Results Pioglitazone inhibited the cell number、DNA synthesis and the percentage of S+G_2+M in the cell cycle of cultured cardiac fibroblasts induced with high glucose and high insulin.Conclusion Pioglitazone inhibits cardiac fibroblast proliferation induced with high glucose and high insulin and the effective mechanism of pioglitazone on cardiac fibroblast proliferation needs further study.

[Summary] Malignant obstructive jaundice is the bile obstruction caused by the invasion of cholangiocarcinoma , pancreatic cancer or ampulla cancer .Due to lack of effective treatment , the prognosis is poor .In recent years , with the rapid development of medical technology and imaging technology , dual interventional treatment technology , such as percutaneous transhepatic cholangial drainage ( PTCD) or biliary stenting combined with radioactive seed implantation , ablation catheter lumen combined with biliary stent implantation , is applied in the treatment of malignant obstructive jaundice .This article is the summary of the clinical application of PTCD combined with radioactive seed implantation , biliary stent combined with radioactive seed implantation and intraluminal catheter radiofrequency ablation combined with biliary stent implantation technique .

Objective The purpose of the study is to analyse the counseling contents in psychological hot line during four years and the characteristics in different groups of the people. Methods Inputting all the completed recorders in hot line from January, 1995 to December, 1999, and using the Statistic Analysis System to analyse the data. Results The main age groups of the counseling people are 20～years and 30～years (77.39%), and 87.43 percent of the people has good education. The main counseling contents are related to mental disorders (23.61%), emotional difficulty (19.74%), love (17.07%), social intercourse (9.69%), marriage (9.15%), consulting for other persons (7.67%), sexual problems counseling (6.36%), and others. Conclusions The main groups of people in hot line are young and good educated people. The counseling contents have touched upon many areas, but mental disorder is the most numerous problems. The main problems in different groups of people are marked difference.

Objective To establish a stable transplanted model of Vx 2 carcinoma in rabbit from three different transplanted methods, and analyze the DSA (digital substraction angiography) features of the implanted tumors. Methods 60 white rabbits of New Zealand were divided into 3 groups at random, 20 for each group. In the first group, Vx 2 carcinoma cells (about 5?10 7 )were infused via hepatic artery into the rabbit liver. For the second group, Vx 2 carcinoma cells (about 5?10 7 ) were inplanted into the left lobe of the liver via laparotomic route and in the 3rd group with the same route as the 2nd group, a piece of tumor tissue (contained about 10 6 10 8 carcinoma cells) were implanted into the left lobe of the liver. And then a comparative observation was performed in 3 groups included:1. the successful rate of implanted tumors; 2. the volume change and the growth rate of implanted tumors; 3. the biological features of implanted tumors in histopathology and electronic microscope photographs and DSA features of implanted tumors. Results The successful rates of transplanted tumors in the three groups were 7/20, 10/20 and 19/20 respectively. The successful rate of the 3rd group was the highest of the 3( P