Objective To analyze the clinical characteristics and to evaluate prognosis of critically ill patients who developed acute renal failure(ARF).Methods A retrospective study was carried out in critically ill patients who developed ARF.APACHE Ⅱ,SAPSⅡ,SOFA and ATN-ISI were used to evaluate outcome of ARF.Results The incidence of ARF in critically ill patients was 19.1% with a high mortality(51.2%).The clinical characteristics of 41 patients with ARF were:mechanical ventilation 65.9%,vasopressor support 46.3%,oliguria 41.5%,number of insufficient organs 2.16,APACHEⅡscore 17.3,SAPSⅡ score 52.0,SOFA score 9.26 and ATN-ISI 0.54.By COX regression,number of insufficient organs(RR 2.54;95%CI 1.316 ~ 4.913)(P=0.006)and requirement of mechanical ventilation(RR 6.0;95%CI 1.102~32.6)(P=0.038)were independent risk factors for ICU mortality of ARF.APACHEⅡscore,SAPSⅡscore,SOFA score and ATN-ISI were demonstrated to predict mortality of ARF patients accurately as indicated by areas under the receiver operating characteristics(ROC)curves of 0.848(95% CI: 0.722~0.974;P

Objective To observe the effect of Shenkang-Ⅱ on hypothalamus-pituitary-adrenal axis (HPA axis) in nephrotic syndrome rats during high-dose glucocorticoids withdrawal, and provide a theoretical basis for clinical application of Shenkang-Ⅱ during the withdrawing and maintaining stages of glucocorticoids in the treatment of nephrotic syndrome. Methods The models of nephrotic syndrome in rats were established with adriamycin, and treated with high-dose glucocorticoid which can cause HPA axis suppression. After the HPA axis was suppressed, the hormone was reduced gradually. At the same time, the rats were treated by intragastric administration with different doses of Shenkang-Ⅱ. The changes of serum ACTH, cortisol and adrenal morphological in large dose of Shenkang-Ⅱ group, small dose of Shenkang-Ⅱ group, hormone control group, nephrotic syndrome model group and normal group were observed after two weeks. Results In the stage of withdrawing glucocorticoids, there were some amelioration in the changes of serum ACTH, cortisol in every group. After 2 weeks, those changes didn’t return to normal level. However, compared with the level of hormone control group, there were obvious increases in the levels of serum ACTH and cortisol in the large and small dose of Shenkang-Ⅱ group (P

Objective:To discuss the implementation and experience of the quality control circle ( QCC) activi-ty in shortening the interval time of consecutive operation and speeding up the turnover of operating table. Method:We formed a QCC team and explored the influential factors of the interval time of consecutive operation using quali-ty control technique. We found out the real reason, put forward corresponding countermeasures, and organized the implementation. Results: Before the implementation of QCC, the average interval time of consecutive operation was 24. 6 minutes, whereas it decreased to 16. 2 minutes after the implementation of QCC with the progress rate of 64. 87%. Through the QCC activities, the problem-solving ability, responsibility, communication and coordina-tion ability, motivation, confidence, team cohesion, and the use of quality control technique of the QCC members has improved significantly. Conclusion:Through the quality management tools of QCC, the interval time of con-secutive operation has greatly shorten, the turnover of operation table has improved, and doctors′ and operating room nurses′satisfaction has improved significantly.

Objective To observe senile plaque and iron deposition in cortex and hippocampus of the Alzheimer's disease ( AD ) transgenic mice and investigate their influence on T2 relaxation time.Method All AD transgeic mice were divided into three groups: young group(2,4 months), adult group (6,8,10 months), old group (12,14,16 months), and C57BL/6J mice were as control and were scanned in order by using 4.7 T MR system.Regions of interest (ROI) corresponding to cortex, hippocampus,thalamus, striatum were manually drawn on MR images and T2 MR relaxation times of each ROI were calculated.After MR scan, these mice were decapitated and stained for iron and senile palques.The number of plaque and iron, plaque burden, iron load in cortex and hippocampus were acquired using image pro plus software.Result T2 relaxation times of each group were as following: wild type ( cortex (49.5 ± 2.1 ) ms,hippocampus (51.6 ± 1.1 ) ms ); young ( cortex ( 49.7 ± 0.5 ) ms, hippocampus ( 50.7 ± 0.7 ) ms ); adult (cortex(47.2 ±0.8) ms, hippocampus(47.7 ±0.9) ms) and old (cortex(44.6 ±0.8) ms, hippocampus (45.3 ±0.4)ms).T2 relaxation times in cortex and hippocampus of each group had statistical differences ( cortex F = 18.620, P ＜ 0.01; hippocampus F = 67.925, P ＜ 0.01 ); Compared with young group and wild type mice, T2 relaxation times in corex and hippocampus of adult group mice were decreased significantly.At the same time, T2 relaxation times in old group mice were reduced compared with adult group ( Adult vs young: cortex q =4.284, P ＜0.01, hippocampus q =7.902, P ＜0.01; adult vs wild type: cortex q =4.424, P＜0.05, hippocampus q = 11.450, P ＜0.01; old w adult: cortex q =4.812, P ＜0.01,hippocampus q = 7.034, P ＜ 0.01 ).Histochemical staining for senile plaques found that senile plaques was deposited as early as 4 month.Iron deposition in hippocampus and cortex were detected by perl-DAB as early as 6 months of age, and there was an overall increase in number and load of plaques and iron with age.A positive correlation was observed between plaque burden and iron load ( r = 0.931, P ＜ 0.01 ).At the same time, plaque burden and iron load were negatively correlated with T2 relaxation times ( plaque burden and T2 relaxation times r = - 0.884, P ＜ 0.01; iron load and T2 relaxation times r = - 0.827, P ＜ 0.01 ).Conclusion The changes of T2 relaxation time in AD transgenic mice are attributed to iron and senile plaques.MR T2 relaxation time is a sensitive marker to diagnosis for AD and screen antidementia drugs.

0.05). CONCLUSION: Serum Cys C is significantly increased in ARF and correlated well with the severity of ARF. Serum Cys C can be one of the detectable markers of ARF, but it is independent of the mortality and does not predict the prognosis of these patients.

According to the trend of the development of the quality education, it is necessary to re-form the traditional homework assignments in medical microbiology for improving the innovation ability of students. This program attempts to reform the homework on clinical medicine undergraduates. First, the teacher must master diversified knowledge, and then the student design and finish the homework combine with personal characteristic from the training requirements of experimental confirmation, theoretical cognition and social survey. The questionnaire shows the personalized homework can help students to master the pro-fessional knowledge, stimulate study interest and improve the comprehensive quality.

Objective To develop specific targeted magnetic biomarkers which can selectively mark the senile plaques in Alzheimer' s disease (AD) and verify its feasibility and validity.Methods Aβ1-40 peptide and Tat-PTD ( Tat-protein transduction domain) was binded with dextran-coated ultrasmall superparamagnetic iron oxide ( USPIO) particles.Visualization of plaques in vivo in Alzheimer transgenic mice was investigated at 7.0 Tesla using T2 sequences after intravenous administration of the targeted nanoiron contrast agent and verified by histological staining.Results The targeted nano-iron contrast agent could enter the cultured neural stem cells,and was able to accelerate T2 relaxation rates of water protons in the cells and negatively reinforce the T2 signal intensity in the labeled cells.Plaques were specifically detected in vivo by magnetic resonance imaging ( MRI) and correlated well with histological staining after injection of nano-iron contrast agent into the APP/PS1 mice.Conclusion The targeted nano-iron contrast agent has the ability of selectively labeling the senile plaques in AD brain tissues in vivo,which might enable the early detection of plaques by MRI and can be further applied in the studies of early diagnosis of AD.

Objective To evaluate the pharmacokinetics and pharmacodynamics of bupivacaine polylactic acid microspheres in rabbits. Methods Sixteen New Zealand rabbits weighing (2.58?0.17) kg were randomly divided into two groups:in group A a bolus of bupivacaine solution 5 mg?kg-1 was injected subcutaneously, in group B a bolus of bupivacaine polylactic acid microspheres 5 mg ? kg-1 was implanted in subcutaneous tissue. Blood samples were obtained for determination of plasma bupivacaine concentration at 5,10,20,30,45 min and 1,2,3,4, 6,8,12,24h after subcutaneous injection in group A and at 0.5,1,2,3,4,5,6,8,12,24,36,48 and 60 h after subcutaneous implantation in group B. Pharmacodynamics study was conducted using a model evaluating the efficacy of regional anesthesia by skin incision and needle pricking. Results In group A plasma bupivacaine concentration peaked quickly at about 0. 34h after subcutaneous injection, then quickly declined and became indetectable in plasma within 12 h. In group B plasma bupivacaine concentration reached a peak much slowly at about 13h after subcutaneous implantation. Cmax was 0.7781 ? 0.3573 ?g?ml-1 significantly lower than that in group A [Cmax = (2.4664 ? 0.7822) ?g?ml-1 ] . The mean retention time (MRT) was 25.2667 ? 2.4857 h, significantly longer than that in group A [MRT= (5.5580 ? 1.3843)h] . Pharmacodynamic study showed that the duration of regional sensory block was significantly longer in group B than that in group A( P

Wilms′ tumor is a common malignant tumor in children.Most patients have a good prognosis, but its pathogenesis is not yet clear.In recent years, some non-coding RNAs have been found to have a close relationship with the development of this tumor.Some non-coding RNAs may serve as biomarkers for the diagnosis, predictors indicators, or targets for gene therapy.This paper studied the relationship between some non-coding RNAs associated with nephroblastoma is now available.