Background Curcumin derives from the rhizome of curcuma longa.It has proven to have an antiproliferative effect in previous studies on vast majority of endothelial and epithelial cells,however,the study of its inhibiting effect on the proliferation of retinal pigment epithelial (RPE) cells and underlying mechanism is rare.Objective Aim of this study was to investigate the potential inhibitory effect of curcumin on the proliferation of cuhured human RPE cells in vitro and its possible mechanism.Methods Human RPE cells harvested by trpsinEDTA were suspended in DMEM/F12 medium with serial dilutions of curcumin (5,10,15,20 mg/L),and the human RPE cells cultured by DMEM/F12 without curcumin were used as control.The proliferation value of human RPE cells (A value) was measured by water-soluble tetrazole-1 (WST-1) assay,the optimized dose of antiproliferation of curcumin was determined and applied for further experimental process.Apoptosis and cell cycle of human RPE cells were detected by flow cytometric analysis at 48 hours and 72 hours after curcumin treatment.The ultrastructure profile of the cells were examined by transmission electron microscopy (TEM).Western blot analysis was performed to measure the relative expressing level of the pro-apoptotic factors p53,p21 WAF1/CIP1 and proliferating cell nuclear antigen (PCNA) in the cells,respectively.Factorial design of two factor analysis of variance of SPSS 17.0 software was used to compare the difference of A values of the cells among the various groups and time points,and independent-sample t test was used to compare the differences of apoptosis rate and cell ratio in different cycles between curcumin group and control group.Results WST-1 assay showed that the A value was gradually reduced with the increase of curcumin dose (F tion =96.55,P =0.00),and gradually increased with the lapse of time (Ftime =4634.28,P =0.00).The early apoptotic rate of the cells was (13.37±1.26) ％ in the curcumin group 48 hours after treated by 15 mg/L curcumin,and that of the control group was (7.03 ±0.37) ％,with a significant difference between them (t =8.33,P=0.00).In 72 hours after treated by 15 mg/L curcumin,the early and middle-late apoptotic rates of the cells were (15.97±0.16) ％ and (0.26±0.03) ％,which were significantly higher than those of the control group (7.29±0.37) ％ and (0.14±0.02) ％ (t=37.80,P=0.00;t=7.44,P=0.00).The cell ratio of G0/G1 phase in the curcumin group was (57.17±1.17)％ 48 hours after treated by 15 mg/L curcumin,and that in the control group was (67.73± 1.10)％,showing a significant difference (t =11.40,P =0.00).M itochondrial swelling and vacuolar degeneration were seen in the cells after treated by 15 mg/L curcumin.The relative expression levels of p53 and p21WAF1/CIP1 protein in the cells were higher in the curcumin group than those of the control group at 24,48 and 72 hours (all at P＜0.05),but the expression levels of PCNA protein were lower in the curcumin group than those of the control group in various time points (all at P ＜ 0.05).Conclusions Curcumin can effectively inhibit the proliferation of human pigment epithelial cells in a dose-and time-dependent manner.P53 pathway may participate in anti-proliferating process.

· AIM: To investigate the complications of intravitreal triamsinolone acetonide (TA) injection in vitrectomy for proliferative diabetic retinopathy (PDR).· METHODS: From February 2005 to January 2007, 18patients (18 eyes) with PDR who were injected with TA in vitrectomy were observed retrospectively after surgery.· RESULTS: During a postoperative follow-up period of 3 to 6 months (mean 4.6 months), some complications including deposit of TA granules on the macular region and surface of the retina (3 eyes), postoperative vitreous hemorrhage (3eyes), elevated intraocular pressure (2 eyes) and pseudohypopyon (1 eye)were observed.· CONCLUSION: The complications after surgery such as deposit of TA granules on the macular region and surface of the retina and pseudohypopyon could be cured without any special treatment. All eyes with elevated intraocular pressure after surgery were controlled by drug. Re-operation may be an effective method for patients with unabsorbable vitreous hemorrhage after vitrectomy.

Antiviral Agents ; therapeutic use ; Congresses as Topic ; Hepatitis B, Chronic ; drug therapy ; Hepatitis C, Chronic ; drug therapy ; Humans

Objective To investigate the CT angiography techniques of the pulmonary artery and aorta at a time.Methods Twenty-three patients who underwent the 64-slice spiral CT examinations of pulmonary and aortic angiography at a time were analyzed retrospec-tively (Group A).Also,13 cases whose pulmonary angiography showed normal (Group B)and 13 cases whose aortic angiography showed normal (Group C)enrolled in this study as control groups.The contrast media dose and the radiation dose were analyzed among three groups.The abnormal blood vessels were observed,and the CT values of the normal pulmonary artery and aorta and the number of the pulmonary 4,5 grade were compared among all groups.Results The contrast media dose in Group A was more than that in Group B or Group C,but less than the sum of that in Group B and Group C.The radiation dose in Group A was equivalent to that in Group C,which was obviously less than the sum of that in Group B and Group C.Six of 23 cases were accurately diagnosed as pul-monary embolism,1 case as pulmonary malformation,4 cases as aortic dissection whose true and false lumens clearly showed with contrast,5 cases as aortitis,and 10 cases as aortic atherosclerosis.For the cases whose angiography showed normal,there was no statistically significance of the number of the 4,5 grade of pulmonary artery and the CT values of pulmonary artery and the aorta compared with those of the control group (P >0.05 ).Conclusion The 64-slice spiral CT can be used to complete pulmonary and aortic angiography at a time,and the contrast media dose and the radiation dose can be reduced obviously.

Objective To investigate the changes of NF-κB p65, IL-6 and cell apoptosis in sec-ondary brain injury after traumatic brain injury and the influence of fenofibrate on these parameters in rats. Methods Ninety-eight male Sprague-Dawley ( SD) rats were randomly divided into two groups:fenofibrate group ( n =49) and control group ( n =49) .The fenofibrate group was induced with the improved Feeney method and received intragastrica of lipanthyl 60 mg/(kg? d) immediately after injury.The control group were received intragastrica of sodium chloride injection 2 ml/( kg? d) immediately after injury and twice everyday until rats were killed.Each group was divided into seven subgroups by sacrificed time after injury, those were 1 h, 3 h, 6 h, 12 h, 24 h, 3 d, and 7 d, and each subgroup got 7 rats.Each subgroup was ran-domly selected three rats after being killed to detect expressions of NF-κB p65 and IL-6 of rat contusion peri tissues brain tissues with immunohistochemical method.While using terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling ( TUNEL) method was used to observe the peri cell apoptosis after brain contusion.Results The expressions of NF-κB p65 and the IL-6 in each fenofibrate group were significantly decreased relative to the control group ( P <0.05),and a significant positive correlation between both pa-rameters in two groups ( P <0.01) .At the same time, the number of apoptotic cells was decreased ( P <0.05).Conclusions Fenofibrate was probably through the route of relieving inflammation response to re-duce the change of secondary brain injury after traumatic brain injury and decrease neural cell apoptosis, and then provide protection of neurocytes.

This article was aimed to study the factors associated with sleep quality of anger-out and anger-in population based on the frequent pattern-tree (FP-Tree) growing algorithm with data mining. The algorithm of structuring frequent model FP-tree and mining frequent itemsets were designed. The database information scanned was recorded by using FP-Tree growing algorithm through state-trees. The frequent itemsets met minimum support required was generated through reducing the search space of project sets and scanning database only one. The data mining of all factors associated with emotional diseases was actualized. The results showed that factors associated with sleep quality of anger-out and anger-in population were disturbance in respiration, cough or snoring, feeling cold, hot or nightmares. The total time for program analysis was 2 seconds. It was concluded that data mining algorithm based on FP-Tree frequent itemsets can effectively realize the useful information receiving from factors associated with emotional diseases.

Glioma is one of the most refractory tumors affecting the central nervous system. As a new technique, cryoablation has been considered for the treatment of glioma. Considering previous studies, we summarized the mechanism of cryoablation to treat glioma based on pathology and molecular biology perspectives. We also analyzed the indications, effects, and problems of cryoablation in clinical practice. Furthermore, we proposed that this technique may be used in future trends and applications. The mechanism of eradicating tumor cells by cryoablation involves the following:(1) using an ultralow temperature to induce necrosis and apoptosis;(2) changing the local microcirculation of tumors;and (3) adjusting anti-tumor immunity. As an alternative surgical treatment, cryoablation could improve the therapeutic effects by real-time medical imaging. Cryoablation combined with chemotherapy, radiotherapy, immunotherapy, and other methods could provide a more effective treatment for gliomas. Therefore, cryotherapy could be a possible treatment for glioma and become a sustained research field.

Objective To investigate risk factors for postoperative delirium in elderly patients with hip fractures and determine whether the delirium can influence the outcome of hip fracture.Method A retrospective case control study was performed for 521 patients (≥60 years) with hip fractures treated surgically from January 2012 to December 2014.There were 170 males and 351 females, with the age of (79.3±8.3)years.Confusion assessment method (CAM) was applied to diagnose delirium after surgery, and the subjects were divided into delirium group (n=159) and control group (n=362) according to the presence of delirium.Univariate and multivariate analyses were performed to identify the riks factors for postoperative delirium, including age, gender, comorbidities, body mass index, American Society of Anesthesiologists (ASA) classification, type of fracture, haemoglobin, PaO2, albumen, type of anesthesia, type of anesthesia, amount of bleeding, time between admission to surgery, length of operation, type of operation and amount of blood transfusion.Perioperative complications and mortality within 1 year after operation were compared between the two groups.Results Univariate analysis revealed dementia, ASA classification, haemoglobin, PaO2, albumen, interval between admission to surgery, anesthesia method, operation time, and surgery methods were risk factors for postoperative delirium incidence (P<0.05).While multivariate analysis showed only dementia (OR=6.211, 95%CI 2.482-23.498), long interval between admission to surgery (OR=3.505, 95%CI 1.478-6.342), arthroplasty (OR=2.015, 95%CI 1.783-3.481), and PaO2≤60 mmHg (OR=2.766,95%CI 1.783-5.039) were the significant risk factors for postoperative delirium after hip surgery in the elderly.Incidences of lung infection, wound infection, cardiovascular events, cerebrovascular events and deep venous thrombosis in delirium group were higher than those in control group, but only incidences of lung infection and wound infection reached significant differences (P<0.05).Mortality in delirium group was higher than that in control group within 1 year after operation, but there was significant difference only within 3 months after operation (P<0.05).Conclusions Incidence of delirium is high after hip fracture surgery in the elderly.Dementia, long interval between admission to surgery, arthroplasty and PaO2≤60 mmHg are significant risk factors for postoperative delirium incidence, and the delirium patients are associated with high early mortality.

Liver cancer stem cells (LCSC) play the critical role in hepatocellular carcinoma development and maintenance. They are generally dormant or slowly cycling tumor cells that have the ability to reconstitute tumors. LCSC associate closely with tumor resistance to chemo/radiation therapy, tumor relapse and metastasis, and can be identified and separated with some special surface markers from hepatocellular carcinoma, such as CD133, CD90, CD44, CD24 and EpCAM to investigate the biological behaviors of them. Early studies showed that these markers can be regarded as special surface markers of liver cancer stem cells. Recent studies found that aminopeptidase N (APN, CD13+) cells in hepatocellular carcinoma have biological characteristics of stem cells and demonstrated that CD13 is a marker for semiquiescent CSC in human liver cancer cell lines and clinical samples and that targeting these cells might provide a way to treat this disease. In this review, we introduce the structure and the main function of CD13, liver cancer stem cells source and identification, CD13+ CSC in hepatocellular carcinoma and combination therapy in the treatment of liver cancer.

Objective To detect the ascites CD64 index of patients with decompensated cirrhosis ,and explore the value in the di-agnosis of spontaneous bacterial peritonitis (SBP) .Methods Decompensated cirrhosis with ascites patients were divided into non-SBP group ,SBP suspected group and SBP diagnosed group .Two control groups were composed of patients with ascites culture pos-itive and non-SPB group .SBP suspected group were further grouped according to abdominal pain and the percentage of peripheral blood neutrophils .The CD64 index was detected by flow cytometry .Compared the difference of ascites CD64 index after treatment , and analyzed diagnosis performance of procalcitonin in human peripheral blood and ascites white blood cell count of SBP .Results The level of the ascites CD64 index was significantly higher in SBP diagnosed group (179 .39 ± 65 .56)and SBP suspected group (115 .49 ± 58 .42)than that of non-SBP group(26 .88 ± 26 .05)(P<0 .01) .The differences of the ascites CD64 index between SBP suspected associated with abdominal pain group and SBP suspected associated with painless group was not statistically significant (P>0 .05) .The level of the ascites CD64 index in SBP suspected with percentage of peripheral blood neutrophils elevated group was increased significantly than non-elevated group(P<0 .05) .CD64 index level in effective treatment group was significantly lower than the ineffective treatment group(P<0 .01) .The area of the ascites CD64 index under the curve was greater than procalcitonin in human peripheral blood and ascites WBC count ,and had a higher sensitivity and specificity .Conclusion The detection process of the ascites CD64 index is fast and with less influential factors ,which provides a new choice for the clinical diagnosis of SBP .