OBJECTIVE:To explore the effect of nifedipine combined with losartan on the blood pressure and renal function of hypertension complicated with coronary heart disease. METHODS:150 patients with hypertension complicated with coronary heart disease were randomly divided into observation group and control group. Control group was orally treated with Nifedipine sustained release tablet 30 mg,once a day;observation group was additionally treated with Losartan potassium capsules 50 mg,once a day. The treatment course for both groups was 1 month. Systolic blood pressure,diastolic blood pressure,renal function indicators be-fore and after treatment,and incidence of adverse reactions in 2 groups were observed. RESULTS:After treatment,systolic blood pressure and diastolic blood pressure after 3 months was lower than 1 month and lower than before treatment in same group,renal function indicators were significantly lower than before treatment,and observation group was lower than control group,the differ-ences were statistically significant(P<0.05);the incidence of adverse reactions in observation group was significantly lower than control group,the difference was statistically significant(P<0.05). CONCLUSIONS:Nifedipine combined with losartan can well control the blood pressure of hypertension complicated with coronary heart disease,protect renal functions,with good safety.

Objective To investigate the effect of high mobility group box chromosomal protein 1 (HMGB1) knockdown on improving renal function and decreasing cell proliferation of glomeruli in lupus nephritis (LN) MRL/Faslpr mice.Methods Twenty-four MRL/Faslpr mice were randomly divided into 3 groups:LN model group,shHMGB1 group and empty plasmid group.Besides,eight MRL/MpJ mice,age and mass matched to the MRL/Faslpr mice,were chosen as normal control group (shNC group).Electroporation technology was used for in vivo transfection in treatment group.shHMGB1 group and empty plasmid group were transfected by electroporation technology for shHMGB1 plasmids and empty plasmid,LN model group and normal control group were transfected only with saline.Automatic biochemical analyzer was used to detect serum urea nitrogen (BUN) and creatinine (Scr) levels and 24 h urinary protein (UP) was tested.HE staining was used to detect the pathological change of renal tissues; real-time PCR,immunofluorence staining and Western blotting were used to detect the mRNA and protein expression of HMGB1 and PCNA.Results (1) The HMGB1 mRNA and protein expression in LN group increased compared with those in control group,HMGB1 mRNA and protein expression in shHMGB1 group reduced compared with those in LN model group (all P ＜ 0.05).(2) 24 h UP of MRL/Faslpr mice in shHMGB1 group significantly reduced compared with those in LN group (P ＜ 0.05).(3) Immunofluorence and Western blotting showed that positive signal of proliferating cell nuclear antigen (PCNA) was mainly located in nuclei,PCNA mRNA and protein in glomeruli of LN model group increased compared with those of control mice (P ＜ 0.05).Interestingly,PCNA expression in glomeruli of shHMGB1 group remarkably reduced (P ＜ 0.05).Conclusions shHMGB1 significantly improves renal function and decreases cell proliferation of glomeruli in LN MRL/Faslpr mice.

Unfavorable psychic reactions or psychological crisis always occur in patients preliminarily diagnosed with cancer.By analyzing the psychological activities and affecting factors,we try to discuss the measures of psychological crisis intervention for patients preliminarily diagnosed with cancer.

Objective To observe the changes of choroidal thickness after ranibizumab treatment for non-proliferative diabetic retinopathy (NPDR) with macular edema,and determine the association between choroidal thickness and visual acuity.Methods Twenty-three eyes from 23 patients diagnosed with NPDR and diabetic macuiar edema were treated with 3 monthly intravitreal injections of ranibizumab.The subfoveal choroidal thickness and central macular thickness were measured,and the best corrected visual acuity was recorded.Changes of subfoveal choroidal thickness,correlation between subfoveal choroidal thickness and best corrected visual acuity were assessed at 3 months follow-up.Results After 3 monthly anti-VEGF treatments,subfoveal choroidal thickness and central macular thickness decreased significantly,there was no statistical difference at 1 month and 2 months compared with pre-treatment (all P ＞ 0.05),but there was statistical differences at 3 months compared with pre-treatment (P =0.04,0.01).In the treatment,the best corrected visual acuity increased gradually,there was no statistical difference at 1 month and 2 months compared with pre-treatment (all P ＞ 0.05),but there was statistical differences at 3 months compared with pre-treatment (P =0.04).Before the treatment,the subfoveal choroidal thickness was positive correlated with macuiar retinal thickness (R2 =0.94,P =0.00);And the best corrected visual acuity before treatment and 3 months after treatment had a positive correlation (R2 =0.93,P =0.00;R2 =0.82,P =0.00).There was a positive correlation between central macular thickness and best corrected visual acuity at 3 months after treatment (R2 =0.83,P =0.00).There was a positive correlation in the best corrected visual acuity between before treatment and 3 months after treatment (R2 =0.84,P =0.00).Conclusion The subfoveal choroidal thickness is a clinical index to evaluate the efficacy of anti-VEGF in the treatment of diabetic macuiar edema.Baseline subfoveal choroidal thickness can be considered as one of the indicators of clinical efficacy in the short term.

AIM: To explore the ex vivo expansion characteristics of the endothelial progenitor cells (EPCs). METHODS: CD34+ cells were selected from umbilical cord blood mononuclear cells (MNC) by MiniMACS system, expanded at the same conditions as that for total MNC, coincubation of CD34+ and CD34- from the same donation for EPCs. In addition, we tested the effect of vessel endothelial growth factor (VEGF) and passage on cell differentiation, expansion kinetics and apoptosis. EPCs were determined and quantified by immunocytochemistry and flow cytometry. RESULTS: Coculture of CD34+ and CD34-,total MNC led to a significant increase in the expansion of CD34+ cells compared with CD34 enrichment (P0.05). These differentiated EPCs were stained positive for CD34+, von Willebrand factor (vWF), KDR, CD31 and incorporate acetylated low-density lipoprotein (LDL). CD34+ and AC133+cells accounted for 68.2%?6.3% (n=6) and 57.2%?9.8% (n=6) of attaching (AT) cells at day 7 of culture, respectively. CONCLUSIONS: Coculture of CD34+ and CD34- or culture of MNC enhances ex vivo expansion of EPCs. Early passage decreases apoptosis rate, VEGF has no significant effect on ex vivo expansion of EPCs.

The characteristics for the ex vivo expansion of the endothelial progenitor cells (EPCs) were explored. CD34+ cells were selected from umbilical cord blood mononuclear cells (MNC) by MiniMACS system, expanded under the same conditions as those for total MNC, coincubation of CD34+ and CD34- from the same donor for EPCs. In addition, the effects of vessel endothelial growth factor (VEGF) and passage on cell differentiation, expansion kinetics and apoptosis were examined. EPCs were determined and quantified by immunocytochemistry and flow cytometry. The results showed that both coculture of CD34+ and CD34- and total MNC led to a significant increase in the expansion of CD34+ cells as compared with CD34 enrichment (P < 0.05). There was a tendency toward decreased apoptosis in cultures when early passage was performed immediately after cord like structures appeared. VEGF had no significant effect on apoptosis (P > 0.05). These differentiated EPCs were positive for CD34+, von Willebrand factor (vWF), KDR, CD31 staining and phagocytized acetylated low-density lipoprotein (LDL). CD34+ cells accounted for (68.2 +/- 6.3)% of attaching (AT) cells at day 7 of culture. It was suggested the most efficient method to ex vivo expansion of EPCs was coculture of CD34+ and CD34- or total MNC. Early passage makes cell apoptosis rate decrease. VEGF had no significant effect on ex vivo expansion of EPCs.

Objective There are three categories of bioaerosol laser telemetry systems according to the light source configuration parameters:namely traditional lidar(light datection and ranging,laser radar), micro-pulse lidar and pseudo-random modulation(lidar).The system source parameters,which impact the degree of danger and detection sensitivity of the system, need to be optimized.Methods With reference to the USA laser product safety standards and by establishing the corresponding mathematical model of a lidar, the three categories of lidar source configuration were compared according to signal to noise ratio(SNR) and security before the repetition rate, pulse energy, divergence angle, distance and other dangerous impact factors were calculated.Results The results showed that to ensure eyesafety, the use of the pulse frequency should be set at 55 kHz for the highest SNR under the micro-pulse lidar excitation mode.Conclusion The eyesafety requirements impact the excitation of light source of a bioaerosol telemetry system.

Objective To evaluate the efficacy and safety of total knee arthroplasty (TKA) with 3D printing guild plate by comparing with conventional TKA. Methods From May 2014 to September 2014, 40 patients suffered primary unilateral TKA were received, in which there were 11 males and 29 females, aged from 57 to 82 years with an average age of 68.5±6.3 years. The subjects were divided into two groups randomly. One group was treated with TKA with 3D printing guild plate while the other group was treated with the conventional TKA. The blood loss, operation time, post?operative Hospital for Special Surgery (HSS) score, range of motion (ROM), lower limb mechanical alignment and incidence of complication were compared with insignificant differences. Results The operation time in the 3D printing TKA group (103.4±11.7 min) was lower than that in the conventional TKA group (124.5±21.6 min), which was statistically significant (t=3.838, P=0.000). The blood loss in the 3D printing TKA group (370.2±96.0 ml) was lower than that in the conventional TKA group (510.0±235.9 ml), which was statistically significant (t=2.454, P=0.019). The post?operative ROM of knee in the 3D printing TKA group was 104.3° ± 15.5° and that in the conventional TKA group was 103.5° ± 12.5° (t=0.169, P=0.867). HSS scores in the 3D printing TKA group and in the conventional TKA group were 88.5±5.7 and 89.4±4.8, which was statistically insignificant (t=-0.633,P=0.530). Mechanical alignment in the 3D printing TKA group was 2.9°±1.1° and that in the conventional TKA group was 3.0°±0.9°, which was not statistically significant (t=-0.317, P=0.753). No obvious complication occurred in two groups. Conclusion TKA with 3D printing guild plate has similar results to conventional TKA in HSS score, mechanical alignment and ROM of knee, but it shortens operation time and decreases the blood loss.

Multi-target drugs attract increasing attentions for the therapy of complicated neurodegenerative diseases. In this study, a computer-assisted strategy was applied to search for multi-target compounds by the pharmacophore matching. This strategy has been successfully used to design dual-target inhibitor models against both the acetylcholinesterase (AChE) and poly (ADP-ribose) polymerase-1 (PARP-1). Based on two pharmacophore models matching and physicochemical properties filtering, one hit was identified which could inhibit AChE with IC50 value of (0.337 +/- 0.052) micromol x L(-1) and PARP-1 by 24.6% at 1 micromol x L(-1).
Acetylcholinesterase ; metabolism ; Cholinesterase Inhibitors ; pharmacology ; Computer-Aided Design ; Drug Discovery ; methods ; Poly(ADP-ribose) Polymerase Inhibitors

Technology for rapid detection of trace microbes combined with flow cytometry and image cytometry is used for rapid detection of cells and microorganisms, quantification of fluorescent signals, and visualization of cells and mi-crobes.Its fast and accurate count of microorganisms plays an important role in detection of the quantity of food and water, and can help to improve residents′quality of life and health.This article describes several common methods for detecting microorganisms with emphasis on their advantages and disadvantages.Current applications and future developlments are also discussed.