The modest pressure promotes the graduate to keep continuous energy and focus on scientific research,but too much pressure will lead to mental problem and serious moral shortcoming.Reformation of scientific evaluating and promoting system,enhancement of scientific interest and reconstruction of mental training system should be the important ways to release the pressure of scientific research of the graduate.

Lung cancer-related papers published by authors of China were retrieved from PubMed and the high frequency subject headings and subheadings were extracted from them using the Bicomb system.The status quo and hot spots of lung cancer-related studies in China were analyzed .

Objective To investigate the damage of mice liver and kidney with the compatibility application of Paeoniae radix rubra and Veratrum nigrum, and explore its mechanism. Methods We examined the alanine aminotransferase, aspartate aminotransferase (AST), lactic dehydrogenase, creatinine and urea nitrogen from serum, and glutathion peroxidase (GSH-Px) and malondialdehyde (MDA) from liver and kidney tissue after intragastric administration of different ratio (4∶1, 2∶1, 1∶1, 1∶2, 1∶4) of Paeoniae radix rubra and Veratrum nigrum in mice for 22 d. Results Paeoniae radix rubra used with Veratrum nigrum did not induce the obvious damage to liver with AST increase, but induced the obvious damage to kidney. At the same time, the depressed GSH-Px activity and the increased MDA content were observed in kidney tissue. When Paeoniae radix rubra and Veratrum nigrum is on a ratio of 2∶1, the kidney injury was the most obvious. Conclusion Paeoniae radix rubra used with Veratrum nigrum in varying proportions could induce the kidney injury in mice which is related to the oxidation-antioxidation balance disturbance.

HbA1C has been used clinically since 1980s as the index of glycemic control in individuals with diabetes mellitus.Several significant clinical trials demonstrated that the intensive blood glucose control reduced the chronic complications in diabetes.In recent years,HbA1C has been recommended as one of the diagnostic criteria for diabetes mellitus.However,the standardization of HbA1C measurement still remains to be an important and arduous task in China.

ObjectiveTo evaluate the efficacy and safety of ibutilide for conversion of paroxysmal and persistent atrial fibrillation.Methods31 patients with atrial fibrillation duration less than 90 days were included into amiodrone or ibutilide group.16 patients were intravenously administer with amiodrone and 15 patients with ibutilide separately.Conversion rate,time needed to converse and adverse effects were compared between two groups.ResultsThe total conversion rate of ibutilide group was significantly higher than that of amiodrone group (66.7％ vs 37.5％,x2 =1.98,P ＜ 0.05 ).Time needed to converse was significantly shortened in ibutilide group compared with amiodrone group [ ( 31.75 ± 7.39 ) min vs ( 51.87 ± 9.26 ) min,t =3.67,P ＜ 0.05 ].No clinical significant adverse effects were observed in ibutilide group.ConclusionIntravenous administration of ibutilide in cardioversion of paroxysmal and persistent atrial fibrillation was more safe and effective than amiodrone.

Objective To explore the influencing factors of hypertensive cerebral hemorrhage in 68 patients with supratentorial prognosis of recovery of neurological function.Methods Clinical data of 68 patients with high blood pressure treatment supratentorial intracerebral hemorrhage,and brain CT,laboratory data were retrospectively analyzed.Neurological functions and related indicators change of were daalyzed by univariate and multivariate Logistic regression analysis.Results Gender,systolic blood pressure,diastolic blood pressure,red blood cell count,such as the impact on the prognosis was not statistically significant(all P ＞ 0.05) ; median line offset,nosocomial infections,surgery,gastrointestinal bleeding,heart failure,treatment Barthel index(BI) were a significant influence on the prognosis (all P ＜ 0.01).The median line offset,nosocomial infections,bleeding,gastrointestinal bleeding,heart failure,BI integration were the main factors affecting the prognosis of neurological function recovery.Conclusion The factors which affects nerve function recovery is an important part of improving neurological outcomes.We should emphasize them.

Objective To compare the effects of early and conventional instillation of normuscle invasive bladder cancer after transurethral resection of bladder tumor.Methods The clinical data of 32 patients with normuscle invasive bladder cancer were retrospectively analyzed.They were divided into observation group (16 cases) and control group (16 cases).The clinical effects of the two groups were compared.Results The recurrence rate of two groups was significantly different (x2 =3.864,P ＜ 0.05).The average recurrence time of two groups was significantly different (t =6.389,P ＜ 0.05).The incidence rate of adverse reactions (x2 =0.369,P ＞ 0.05) and the incidence rate of toxic reactions(x2 =2.222,P ＞ 0.05) in two groups had no statistically significant differences.Conclusion It can lower the recurrence rate for early and conventional instillation of normuscle invasive bladder cancer after transurethral resection of bladder tumor and to delay the recurrence time,so it is widely applicable for clinic cure.

Objective To study the effect of improved laparoscopic techniques on ability of control urine in patients with prostate cancer.Methods 96 patients with prostate cancer were randomly divided into two groups,the observation group(51 cases) and the control group(45 cases).The patients in the control group were operated through the conventional treatment,while the patients in the observation group were operated through the improved laparoscopic technique,which protected the external urethral sphincter,reserved urinary nerve and reconstructed the bladder neck.The ability to control urine for 30,60 and 90 days were compared between two groups.Results The time of operation and bleeding of operation had no significant differences between two groups (all P ＞ 0.05).There were significant differences between two groups in indwelling catheter time and the ability to control urine for 30 ;60 and 90 days (t=10.0359,P＜0.05;t=7.9746,14.0205,10.8445,all P＜0.01).Conclusion Improved laparoscopic technique can improve the ability of control urine in patients with prostate cancer after operation.

Eighty-five elderly patients treated for the upper gastrointestinal bleeding(UGB)in our hospital between January 2000 and December 2002 were divided into death or survival group.Their clinical characteristics,risk factors,treatment and complications were retrospectively analyzed.Eighteen patients died of UGB within 30 days.Univariate analysis indicated that documented diabetes,cardiovascular disease,cerebrovascular disease,gastric ulcer,hemoglobin,arrhythmia,stomach cancer,multiple organ dysfunction syndrome(MODS),and shock were significantly associated with inhospital mortality within 30 days(P＜0.05 or P＜0.01).Stomach cancer,MODS,and shock entered into the Logistic regression model.These findings demonstrate that stomach cancer,MODS,and shock might be independent risk factors for short-term prognosis in elderly UGB patients.

Hypoxia- inducible factor-1 ( HIF-1) promotes tumor deterioration, invasion and metasta-sis. Treatment targeting the HIF-1 signal pathway is becoming a hot research. In addition to uniquely selective inhibition of topoisomerase Ⅰ(Topo Ⅰ) ,the recent studies show that camptothecin compounds can regulate the activity of HIF-1 through decreasing HIF-1 protein translation and have been classified as a non-selective chemical inhibitor of HIF-1.