Induced pluripotent stem cells (iPSCs)are pluripotent stem cells obtained through transduction of specific transcription factors and reprogramming of human and animal somatic cells,Which are similar to embryonic stem cells.The iPSCs possesses characteristics of unlimited proliferation,self-reneWal and multi-differentiation.This arti-cle mainly summarized current research condition,application value and prospects of iPSCs in cardiovascular area, and its defect in application of current stage.

Objective: To develop a method for determination of chlorgenic acid in Shuangyin Solution.Methods: HPLC with Hypersil-ODS column (4.6?250mm,5?m) was used. The mobile phase was acetonitrile-water-acetic acid glacial (10∶110∶3). The detective wavelength was 328nm.Results: The linear range was from 0.0568 ～0.2840mg/mL. The average recovery was 100.16%.Conclusion: The method is simple, rapid and accurate. It can be used to determine chlorgenic acid in Shuangyin Solution.

BACKGROUND: Hematogenesis of a body mainly depends on the proliferation of hematopoietic progenitor cell (HPC). Hematopoietic functional impairment will occur when hematopoietic cells are injured by radioactive ray or chemical drug. The proliferation of HPC is the key link of promoting hematogenesis.OBJECTIVE: To study the effects of nine monomers extracted from Spatholobus suberectus Dunn (SSD) on proliferation of HPC in marrow-depressed mice. DESIGN: Randomized controlled trial.SETTING: Department of Pharmacy, General Hospital of Chinese PLA.MATERIALS: This experiment was conducted in the Department of Clinical Pharmacology, General Hospital of Chinese PLA from November 2002 to February 2003. Totally 348 healthy Kunming mice, weighing 22-25g, clean grade, of irrespective gender, were selected in this study (certification: SCXK-2001-001). The animal experiment was approved by the local ethics committee. SSD was provided by Dispensary of Traditional Chinese Medicine, General Hospital of Chinese PLA; monomers (gallocatechin, formononetin, catechin, pyromucic acid, syringic acid, Demethylvestitol, 1,3,5-benzenetriol, ononin, and epicatechin) were extracted from SSD acetoacetate; TGL-16 centrifuger was made in Shanghai 6th Medical Equipment Factory; CO2 incubator was made in SANYO Company, Japan; MK inverted microscope was provided by OLYMPUS Company, Japan.METHODS: Experimental grouping: Mice were randomly divided into 29 groups, including normal group; control group; gallocatechin high-, medium-, low-dose groups; formononetin high-, medium-, low-dose groups; catechin high-, medium-, low-dose groups; pyromucic acid high-, medium-, low-dose groups; syringic acid high-, medium-, low-dose groups; Demethylvestitol high-, medium-, low-dose groups; 1,3,5-benzenetriol high-, medium-, low-dose groups; ononin high-, medium-, low-dose groups; epicatechin high-, medium-, low-dose groups with 12 mice in each group. Experimental intervention: All the mice except the mice in normal group had been given total body sublethal dose of irradiation by 60Co γ-ray (215.3 rontgen/min, 4 Gy dose rate, irradiation time of 107.5 seconds). Normal saline was injected intraperitoneally into 8 mice in normal group and control group at the third day after inadiation. Stored solution 2,0.4,0.08g/L of each monomer was intraperitoneally injected into the mice in each monomer high-, medium-, low-dose groups, respectively, at the third day after irradiation. Experimental evaluation: Thirty minutes after administration, blood of 8 mice in normal, control group and 12 mice in other groups was collected and normal, control and each dose monomer-containing serums were obtained after centrifugation for 15 minutes, filtering through 0.45μm filter membrane. Then 4 mice in normal and control group were killed to study the effects of nine monomers on proliferation of HPC in marrow-depressed mice by counting erythrocyte colony-forming unit (CFU-E), burst-forming uniterythroid (BFU-E), granulocyte-macrophage colony-forming unit (CFU-GM), and megakaryocyte colony-forming unit (CFU-Meg).MAIN OUTCOME MEASURES: CFU-GM, CFU-E, BFU-E, and CFU-Meg in each group. RESULTS: Totally 348 mice were included in the final analysis. CFU-E: The quantity of CFU-E in high-dose of catechin, gallocatechin, syningic acid, and epicatechin groups was significantly higher than that in the control group (P<0.05-0.01) while the quantity of CFU-E in medium-and low-dose of catechin and medium-dose of gallocatechin was also significantly higher than that in the control group (P<0.05). CFU-GM: Except pyromucic acid and ononin groups, the amount of CFU-GM in other groups was significantly higher than that in the control group (P<0.01). BFU-E: Compared with control group, the amount of BFU-E remarkably increased under the effect of each dose of catechin, gallocatechin, syringic acid and high-, medium-dose of epicatechin (P<0.05). CFU-Meg: The amount of CFU-Meg in high-, low-dose syringic acid groups, low-dose gallocatechin groups and each dose group of catechin and epicatechin was significantly higher than that in the control group (P<0.05). Amount of all colonies in the control group was significantly lower than that in the normal group (P<0.01). CONCLUSION: Nine monomers extracted from SSD can promote the proliferation of HPC in bone marrow depressed mice. In particular, the activity of catechin to stimulate proliferation is the strongest.

BACKGROUND:Brain microvascular endothelial cel s (BMECs) are important tools in the field of neuroscience research;therefore, how to obtain highly purified BMECs is a key and difficulty in vitro.
OBJECTIVE:To develop a simple method of isolating and culturing highly purified BMECs.
METHODS:C57BL/6 mice aged 6-8 weeks old were selected, and microvessels were obtained using enzyme digestion and gradient centrifugation. Further, endothelia cel s were purified by certain drugs, fol owed by identified by CD31 and GFAP immunofluorescence staining. The expression of Claudin-5 was detected using immunofluorescence staining with anti-Claudin-5 antibody.
RESULTS AND CONCLUSION:Mouse BMECs grew and arranged in spiral or cobblestone-like. Immunofluorescence staining showed that the purity of BMECs reached above 99%and Claudin-5 was highly expressed. In conclusion, a simple method of easy accessibility is developed to obtain highly purified primary mouse BMECs.

Objective Based on the Chinese full version of the Temperament Evaluation of Memphis Pisa Paris and San Diego-Auto questionnaire ( TEMPS-A) , we aimed to validated a short version of TEMPS-A for Chinese adoles-cents.Methods Taking into account the item factor loading from our previously validated full version TEMPS-A, cultur-ally-determined items, and sexual activity related items, we derived a 60-item Chinese TEMPS-A for adolescents.The internal consistency and structural validity of the Chinese TEMPS-A for adolescents was evaluated in 822 participants aged 11~17 years old.Results The Cronbach’ s alphas coefficients for depressive, cyclothymic, hyperthymic, irritable and anxious subscales were 0.67, 0.78, 0.76, 0.77 and 0.83, respectively.The anxious, irritable, hyperthymic factors were effectively distinguished by exploratory factor analysis, while the depressive and cyclothymic factors tended to correlate.The males scored significantly higher on the hyperthymic subscale than the females [(5.407 ±2.842) vs.(4.852 ±2.963), P<0.01].The females scored significantly higher on the depressive [(3.521 ±2.221) vs.(3.144 ±2.295)], cyclothy-mic [(4.484 ±2.922) vs.(3.917 ±2.823)] and anxious [(5.236 ±3.719) vs.(4.366 ±3.658)] temperaments than the males ( P<0.05) .The scores of depressive subscale and cyclothymic temperaments subscale were significantly correla-ted (r=0.625, P<0.001), so did the scores of anxious subscale and irritable temperament subscale (r=0.628, P<0.001).Conclusions The Chinese Adolescent version of TEMPS-A is a reliable and valid instrument for investigating af-fective temperaments for adolescents.

Aim To study effects of nine compounds extracted from Spatholobus suberectus Dunn (SSD) on proliferation of hematopoietic progenitor cell (HPC) in marrow-depressed mice. Methods Serum pharmacology experiment was used to observe the influence of nine compounds on growth of CFU-E、BFU-E、CFU-GM、CFU-Meg in marrow-depressed mice. Results Compared with the control, all compounds except pyromucic acid and ononin could significantly stimulate the growth of CFU-GM (P

Objective To evaluate catheter-directed thrombolysis via the popliteal vein in the treatment of the lower limb acute deep venous thrombosis.Methods From July 2009 to October 2010,32patients of the lower limb acute deep venous thrombosis including 3 patients with concurrent pulmonary embolism underwent uhrasound-guided catheter-directed thrombolysis via the popliteal vein.The thrombolytic catheter was inserted into thrombus,through which urokinase was infused at a dosage of 100 × 104U/d.The venous patency score and the rate of patency improvement were observed by venograms before and after therapy.Results In every patient,the lower limb swell and pulomonary symptoms relieved.The circumferences between affected and normal thigh before and after the thrombolysis were(5.4 ± 1.4)cm and (1.7 ± 1.3)cm(t =9.92,P ＜0.01).The circumferences between affected and normal leg before and after the thrombolysis were(4.1 ± 1.5)cm and(1.5 ±0.7)cm(t =7.65,P ＜0.01).The venous patency score before and after the thrombolysis were(15 ± 4)and(4 ± 3)(t =7.12,P ＜ 0.01).The mean rate of venous patency was 88.21％.In the 3 patients with pulmonary embolism,thrombus was complete dissolved in 1 case and partial dissolved in 2 cases.No major complications occurred in all these patients.29 patients were followed up for 3-12 months.There were no thrombosis relapsed.Conclusions Catheter-directed thrombolysis via the popliteal vein with urokinase for acute lower limb deep venous thrombosis is safe and effective.

Objective To determine the optimal cut-off value of critical-care pain observation tool (CPOT) in assessing degree of pain in patients undergone craniotomy, and to determine the sensitivity and specificity of CPOT with this cut-off value. Methods A prospective observational study was conducted in Beijing Tiantan Hospital. A total of 118 patients admitted to intensive care unit (ICU) after craniotomy was consecutively enrolled during August 2014 to August 2015. CPOT and visual analogue scale (VAS) were used to assess the pain before, during and 20 minutes after the removal of central venous catheters, and the difference was compared between two scores at three time points. Receiver operating characteristic (ROC) curve was used to determine the optimal cut-off values for evaluation of the sensitivity and specificity of CPOT. Patients' complaint of pain was considered the gold-standard. Results CPOT values (inter-quartile range) before, during and after the procedure were 0 (0-3), 0 (0-6) and 0 (0-2), respectively; while VAS values were 4 (1, 6), 3 (1, 6) and 4 (1, 6), respectively. CPOT value during the procedure was significantly higher than CPOT values before and after the procedure (both P < 0.01). When the optimal cut-off value of CPOT was 1, CPOT showed the highest Youden index before, during and after the procedure (1.183, 1.515, and 1.438, respectively), and showed high specificity (all 100%) and low sensitivity (18.3% and 43.8%, respectively) when assessing the pain before and after the removal of the catheter. The sensitivity and the specificity were high when assessing the pain during the procedure, the sensitivity was 69.4%, and the specificity was 82.1%. When the optimal cut-off value of VAS was 2 before and during the procedure, and was 4 after the procedure, VAS showed the highest Youden index, 1.568, 1.452, and 1.509, respectively. VAS demonstrated high sensitivity and specificity before, during and after the procedure (sensitivity was 97.2%, 95.2% and 75.0%, respectively; specificity was 59.6%, 50.0% and 75.9%, respectively). The area under ROC curve (AUC) of CPOT before, during and after the procedure were 0.592 [95% confidence interval (95%CI) = 0.490-0.693], 0.778 (95%CI= 0.693-0.863) and 0.719 (95%CI = 0.627-0.811), respectively; the AUC of VAS before, during and after the procedure were 0.846 (95%CI = 0.771-0.920), 0.767 (95%CI = 0.681-0.854) and 0.838 (95%CI = 0.767-0.909), respectively. The AUC of VAS before and after the procedure was significantly higher than the AUC of CPOT (P < 0.001 and P = 0.006), while there was no significant difference between the AUC of VAS and CPOT during the procedure (P = 0.826). Conclusion CPOT can be used to assess the pain during painful procedure, and it shows high accuracy, but with poor evaluation effect on pain in rest.

Objective To evaluate the effects of low blood sugar production index (LGI) combined with low blood sugar production burden (LGL) dietary intervention on blood glucose, oxidative stress and anthropometric indicators in type 2 diabetes mellitus. Methods A total of 150 cases of type 2 diabetes were randomly divided into two groups,maintain the original treatment plan of two groups,75 patients in the control group were given traditional food interchange method for dietary intervention;the experimental group of 75 patients, provide food education based on LGI+LGI food exchange method , the time period of 3 months. Fasting blood glucose (FPG)、2h postprandial blood glucose (2hPG), Glycated hemoglobin (HbAlc), Superoxide dismutase (SOD), Malondialdehyde (MDA), Vitamin C, Vitamin E, Body Mass Index (BMI), Waist circumference (WC) Upper arm muscle circumference (AMC), Triceps skin fold thickness (TSF) were observed before and after the intervention. Results There were no significant differences in blood glucose, oxidative stress and anthropometry between the two groups (P>0.05). After intervention, in the control group: FPG, 2hPG, HbAlc, SOD, MDA, Vitamin C, Vitamin E, BMI, WC, AMC, TSF were (10.27 ± 2.67) mmol/L, (11.51 ± 2.54) mmol/L, (8.78 ± 1.95)%, (322.73 ± 51.97) kU/L, (5.80 ± 1.76)μmol/L, (40.78±4.86)μmol/L, (19.33±4.79)μmol/L, (23.94±3.18) kg/m2, (89.57±10.23) cm, (24.10± 3.01) cm, (18.38 ± 3.79)mm respectively. In the experimental group: they were (8.76 ± 2.77) mmol/L, (10.63 ± 1.76) mmol/L, (7.96 ± 1.86)%, (357.29 ± 60.04) kU/L, (5.26 ± 1.33)μmol/L, (44.01 ± 7.06)μmol/L, (21.58 ± 5.25) μmol/L, (22.93 ± 2.75) kg/m2, (86.05 ± 10.79) cm, (22.75 ± 2.86) cm, (16.98 ± 4.48) mm respectively. There was significant difference between the two groups after intervention (t=2.049-3.769, all P < 0.05). In the experimental group, the improvement of blood sugar, oxidative stress and anthropometry was better than that of the control group (P < 0.05). Conclusions LGI combined with LGL diet intervention is better than the traditional method of food interchange, the blood glucose, oxidative stress and anthropometric indicators have improved, which can improve treatment efficacy in type 2 diabetes and easy for home self-management.

Objective To evaluate the value of three dimensional reconstruction images of rotational DSA on measuring aneurysmal necks and make a comparison with traditional DSA so as to provide more abundant and accurate informations for the enbolization of aneurysm. Methods A comparison was made between the measurement of aneurismal necks from 14 cases with traditional DSA examination and a measurement made on three dimensional reconstruction images of the same patient. Results There was a difference shown in the measurment of the aneurysmal necks between three dimensional reconstruction images of rotational DSA and those of traditional DSA, outcoming with more angles and data on three dimensional reconstruction images. Conclusions There are more angles of aneurysmal neck can be shown on rotational 3D DSA especially for the demonstration of the largest aneurysmal neck with a directional value for the intervention. (J Intervent Radiol, 2006, 15: 259-260)