Objective To establish a new spectrophotometry for determination of trace resorcin. Methods Resorcin can inhibit discolouring reaction of bromophenol red induced by H2O2 ,which is catalyzed by Fe(Ⅲ) in NH3-NH4Cl medium. Results The detection limit of this method was 0.054 ?g/ml, linear range was 0.16-2.6 ?g/ml, the optimum reaction temperature was 75℃ and the optimum reaction time was 4 min. Conclusion The present method is simple, accurate and can be used to determine trace resorcin in waste water.

0.05); (2) Reticulocytes, pretreated by pronase and then by PI-PLC, give a significant decrease in iron uptake in cytosol and in heme (P

Articular cartilage repair is one of the most challenging issues which remains to be resolved in clinic work. Discovering of bone marrow stromal cells (BMSC) and its application in tissue engineering provide new methods for the treatment of cartilage defects. High seeding density, appropriate cytokines and three-dimensional culture play important roles in the process of inducing BMSC differentiating into chondrocytes, suitable scaffold is also essential in reconstructing cartilage in vitro by methods of tissue engineering.

Objective To evaluate the effects of Xuebijing injection on inflammatory response in patients with acute respiratory distress syndrome(ARDS) by the changes of the level of PCT in bronchoalveolar lavage fluid (BALF) and plasma so as well as serum tumor necrosis factor-α(TNF-α) 、interleukin-6(IL-6) and interleukin-8( IL-8). Methods Sixty patients treated at the intensive care unit(ICU) were recruited in this study;these subjects satisfied the diagnostic criteria for ARDS. They were randomly classified into two groups: study group ( 30 patients) in which patients were given Xuebijing injection 100ml and 5% Glucose injection 150 ml daily,and control group(30 patients) patients were given 5% Glucose injection 250ml daily. The changes of the level of PCT in BALF and plasma so as well as serum TNF-α,IL-6 and IL-8 were monitored before intervention and seven days later. Results The level of PCT in BALF and plasma before intervention were statistically higher than normal( t= 2.882、2.657 all P ＜0.01 )while decreased significantly seven days later ( all P ＜ 0.01 ) in study group but fewer change in control group ( all P ＞0.05 ). Levels of TNF-α,IL-6 and IL-8 were statistically higher than normal before intervention( all P ＜ 0.05 ) while decreased significantly seven days later( all P ＜0.01 )in study group but fewer change in control group( all P ＞0.05 ). The mortality of patients was 26.7% ( study group) and 33.3% ( control group) ( all P ＜ 0.05 ) respectively.Conclusion Xuebijing injection could lower the level of PCT in BALP and plasma of patients with ARDS,played the role of antiinflammatory and improving the oxygenation, and could to reduce the mortality of patients.

AIM: To investigate the possible role of P97 in non - transferrin bound iron uptake by rabbit reticulocytes. METHODS: The iron uptake were measured by the method of radioisotope (5gFe). RESULTS: (1) Only PI - PLC treatment had no apparent effect on iron uptake by reticulocytes (P > 0.05); (2) Reticulocytes, pretreated by pronase and then by PI - PLC, give a significant decrease in iron uptake in cytosol and in hemne ( P < 0.01). CONCLUSION: The results support the possibility that P97 might be able to be expressed on the membrane of reticulocytes and plays a role in non - transferrin bound iron uptake by this type of cells in the rabbit.

Objective: To design a convenient and safe leg support of lithotomy position surgical bed. Methods:Put the gas spring in the device to lift and drop the leg support, instead of turning screw, And then use the new leg support in 80 lithotomy position surgeries. Results:The new device can be operated by one man, it is easy operating and labor saving. There was no leg slip occurred in 80 surgeries, operators all expressed satisfaction. Conclusion: This innovation patent solved the problem of toilsome operating and potential safety hazard, It worth widely use in the clinical.

Objective To investigate the effect of ovariectomy and estrogen on secretion function and number of pancreatic islet beta cell in low-dose streptozotocin-induced diabetic rats. Methods Thirty female SD rats were randomly divided into five groups: normal control(NC) group, streptozotocin(STZ) group, ovariectomized(OVX) group, OVX + STZ(OS) group and OVX+STZ+estradiol(OSE) group. OVX, OS and OSE groups underwent ovariectomy, while NC and STZ groups underwent just sham operation. After surgery, OSE group was treated subcutaneously with estradiol 0.2 mg/kg twice weekly. At the end of 3 weeks, STZ, OS and OSE groups were induced by a single intraperitoneal injection of 40 mg/kg STZ. Then eight days later, plasma glucose and insulin levels were tested. The insulin protein, the average beta cell area and the relative beta cell mass were tested by streptavidin peroxidase conjugation method (SP). The quantification of beta cell apoptosis was performed by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL). The expressions of proliferating cell nuclear antigen(PCNA) protein, Bax and Bcl-2 were tested. Results With the administration of low-dose STZ, the plasma glucose was significantly higher and the insulin secretion curve after glucose loading, △I30/△G30 and modified beta cell function index(MBCI) were lower in OVX group than in other groups(all P<0.05). At the same time, the insulin protein, the relative beta cell mass and the beta cell area were dramatically decreased(all P<0.05). The beta cell apoptotic index was increased (t = 2.957, P< 0.05), the expression ratio of Bcl-2/Bax was decreased (0.41±0.03 vs. 0.76±0.05, P<0.05). Estrogen replacement therapy could obviously inhibit these changes. Compared with OS group, glucose disturbances and insulin secretion were improved dramatically in OSE group(all P<0.05); the insulin content, the relative beta cell mass and the average beta cell area were all enhanced (all P<0.05); the beta cell apoptotic rate was decreased(t =2.482, P<0.05), and the expression tatio of Bcl-2/Bax was increased (0.71±0.05 vs. 0.41±0.03, P<0.05). Conclusions The ovx rats are significantly more susceptible to low-dose STZ toxicity than in control rats. Under the effect of STZ, the ability of insulin secretion of beta cell is obviously decreased, while apoptosis is increased, which induces a higher glucose level and a lower insulin secretion. Administration of estrogen may protect OVX rats from the metabolic disturbances.

Objective To summarize experience and prognosis of repeat renal transplantation after graft loss due to BK virus nephropathy (BKVN).Methods The clinical data of 4 adult patients undergoing repeat transplantation after previous allograft loss due to BKVN were collected and analyzed retrospectively.Results Three of four patients had documented allograft loss caused by BKVN and underwent retransplantation 5 months,9 months and 9 months respectively after hemodialysis with confirmed clearance of viremia.Allograft nephrectomy was performed on 1 of 3 patients 4 months before retransplantation.Maintenance immunosuppression was CsA + MMF + Pred,Tac + MMF + Pred and CsA + Pred in these 3 patients respectively.During the follow-up period of 9 months,5 months and 26 months,viremia kept negative and allografts function stabled normally without recurrence of BKVN.The cause of allograft loss was not illustrated in the other patient before retransplantation,which was performed without dialysis or allograft nephrectomy.BK virus was not monitored routinely after the operation.Four months later,his serum creatinine rose up to 400μmol/L and BKVN recurrence was proved by pathological analysis of the biopsy samples of the first and the second transplantation.Tac was switched to CsA and his serum creatinine declined to 260 μnol/L at 20th month.Conclusion Retransplantation can be performed on the patients with previous allograft loss due to BKVN.Allograft nephrectomy,clearance of viremia,monitoring BK virus and timely adjustment of immunosuppression were the keys to guarantee successful retransplantation.

Objective To study the clinical characteristics and the influencing factors of hypertension in IgA nephropathy(IgAN)patients with normal renal function.Methods From 2002 to 2006,a total of 507 idiopathic IgAN patients with normal renal function(eGFR≥90 mL/min)confirmed by renal biopsy were treated in the First Affiliated Hospital of Sun Yat-sen University.The patients were divided into a hypertension group(n=93)and a normal group(n=414)according to the BP levels.Univariate and multivariate logistic regression analysis were used to analyze the relationship between the hypertension and the clinical characteristics.Results We found that 18.3%(93/507)of the IgAN patients had hypertension,with hypertension as the main symptom in some cases.Univariate analysis showed that male sex,older age,higher BMI,elevated level of triglyceride and cholesterol were the clinical risk factors for hypertension in IgAN patients(P

OBJECTIVE:To provide reference for rational use of antibacterials. METHODS:Taking 69 hospitals of Beijing, Tianjin,Shanghai,Hangzhou,Guangzhou,Chengdu as samples,the data about the purchase and application of antibacterials in outpatient department were collected during 2009 to 2013,and analyzed in terms of the proportion of the amount of antibacterials in all chemical drugs,the number of antibacterials among top 80% chemical drugs in the list of consumption sum and their variet-ies number,the utilization rate of antibacterials in outpatient prescription,the percentage of two and more antibiotics combination in outpatient antibiotics prescriptions,the proportion of antibiotics use,etc. RESULTS:The proportion of average purchase amount of antibacterials in chemical drugs decreased from 20.97 % in 2009 to 14.17 % in 2013;the number of antibacterials among top 80% chemical drugs in the list of consumption sum decreased from 43 in 2009 to 34 in 2013;the average utilization rate of outpa-tient antibacterials decreased from 23.22 % in 2009 to 16.11 % in 2013;there was statistical significance(P<0.05). The varieties of antibacterials decreased from 78 kinds in 2009 decreased to 54 kinds in 2012(P<0.05),but rise to 66 kinds in 2013;the per-centage of two and more antibacterials combination in outpatient antibacterials prescriptions decreased fron 9.02% in 2009 to 7.35% in 2012 (P<0.05),rise to 12.89% in 2013. The utilization ratio of antibacterials injection in outpatient antibacterials pre-scriptions had no significant change. The utilization of antibacterials in tertiary hospitals from 6 districts was analyzed;cephalospo-rin had ranked the first place,and almost occupied half part of antibacterials but declined;the utilization rate of antibacterials for special use was on the rise. CONCLUSIONS:After 3 years of antibacterials special rectification,and the utilization of antibacteri-als in 6 districts as Beijing have been improved significantly;however,several index have little improvements,and some rebound-ed in 2013,so this activities needs to establish long-term mechanism of continuous supervision.