Applications of network pharmacology are increasingly widespread and methods abound in the field of drug development and pharmacological research. In this study, we choose rosiglitazone compound as the object to predict the targets and to discuss the mechanism based on three kinds of prediction methods of network pharmacology. Comparison of the prediction result has identified that the three kinds of prediction methods had their own characteristics: targets and pathways predicted were not in accordance with each other. However, the calcium signaling pathway could be predicted in the three kinds of methods, which associated with diabetes and cognitive impairment caused by diabetes by bioinformatics analysis. The above conclusion indicates that the calcium signaling pathway is important in signal pathway regulation of rosiglitazone compound, which provides a clue to further explain the mechanism of the compound and also provides a reference for the selection and application of methods of network pharmacology in the actual research.
Calcium Signaling ; Cognitive Dysfunction ; Computational Biology ; Diabetes Mellitus ; Humans ; Pharmacology ; methods ; Thiazolidinediones ; pharmacology

In this study, the human umbilical vein endothelial cell model was used to study the regulating effect of lipophilic components in Salvia miltiorrhiza on angiogenesis, and explore its possible mechanism. The cell model was established to determine the effect of lipophilic components in S. miltiorrhiza on the proliferative activity and migration capacity of endothelial cells. Then the realtime fluorescence quantification PCR technology was applied to detect the changes in the gene expressions of angiogenesis-related cytokines VEGF-A, VEGF-C and MMP-9. The results showed that 5 mg x L(-1) lipophilic components in S. miltiorrhiza could inhibit the proliferation and migration of endothelial cells, and reduce the expression of VEGF-A and MMP-9 genes. It indicated that lipophilic components in S. miltiorrhiza may inhibit the proliferation and migration of endothelial cells by inhibiting the expression of VEGF-A and MMP-9 genes, so as to show the inhibitory effect on angiogenesis.
Angiogenesis Inhibitors ; chemistry ; pharmacology ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Human Umbilical Vein Endothelial Cells ; cytology ; drug effects ; metabolism ; Humans ; Matrix Metalloproteinase 9 ; genetics ; metabolism ; Salvia miltiorrhiza ; chemistry ; Vascular Endothelial Growth Factor A ; genetics ; metabolism

Background Recently,whether the epithelial flaps should be removed or preserved during the Epi-LASIK and its affection on clinical results are concerned.Objecfive This system analysis was to evaluate and compare the clinical effectiveness between on-flap Epi-LASIK and off-flap epi-LASIK for myopia. Methods A systematic literature retfieval was conducted in the MEDLINE,EMBase,Coehrane Library,CBM disc,CNKI from 2003 through 2009.The possible differences in reepithelization time,pain sensation,and haze after surgery were compared between on-flap and off-flap Epi-LASIK for myopia.The statistical analysis was performed using a RevMan 4.2 software.The data was extracted,and the methodological quality was evaluated by two reviewers independently with weighted mean difierence(WMD)for the effectiveness analysis and odds ratio(OR)for counting variable.The quality of included literature was scored according to the Jadad Scale. Results A total of 8 studies involving 251 patients(502 eyes)were included in the meta-analysis.Of these eight studies.five studies were randomized clinical trials and the other three studies were retrospective cohort studies.Compared with on-flap Epi-LASIK group,off-flap Epi-LASIK group had a better postoperative outcome in the mean reepithelization time(WMD=1.32,95％CI-1.82to-0.82,P<0.01)and pain scores at 3,5 day(WMD=-O.99,95％CI-1.71 to-0.28,P(0.01)(WMD=-0.94.95％CI-1.35 to-0.54,P<0.01)after surgery.No significant difierenees were found in the eye numbers of haze at 1 month(OR=0.62,95％C1 0.34 to 1.12,P=0.11),3 months(OR=0.70,95％C1 0.31 to 1.55,P=0.38)and 6 months(OR=1.14,95％C1 0.58 to 2.26,P=0.71)between these two types of operation.The pain scores at the first day after surgery was not significantly different between these two groups(WMD=-0.17,95％CI -0.55 to 0.20,P=0.37). Conclusion The effectiveness of off-flap Epi-LASIK is superior to on-flap Epi-LASIK for myopia.Some high-quality randomlizd and control studies are needed for the further clinical evaluation.

Background Nowadays,customized ablation is widely used in the excimer laser corneal refractive Burgery.And the Q-value guide LASIK is one of the research hotspots. Objective Present study was to evaluate and compare the effectiveness of Q-value guide LASIK and standardized LASIK for myopia.Methods A systematic literature retrieval from 2003 through 2010 was conducted in the MEDLINE,CNKI,Cochrane Library,EMBASE.The literature examine possible difierences in uncorrected visual acuity(UCVA),Q-value,higher order aberrations(HOAs),and spherical equivalent(SE) between Q-value guide LASIK and standardized LASIK for correcting myopia.Statistical analysis was performed using a Review Manager 5.0 software.The data was extracted,and the methodological quality was evaluated by two reviewers independently.The quality of included literature was scored according to the Jadad Scale. Results A total of 14 studies involving 1617 patients(2956 eyes)was included in the meta-analysis.Of these fourteen studies,six studies were randomized trials and the other eight studies were retrospective cohort studies.According to the Jadad Scale,2 studies scored 3 points,and the other 12 studies scored 1～2 points.The results showed that the Q-value guide LASIK group had a better postoperative effectiveness in uncorrective visual acuity(UCVA)(WMD=0.04.95% CI 0.00 to 0.08,P<0.05).Q-value(SMD=-1.52,95% CI -2.23 to-0.81,P=0.00),total HOAs (SMD=-1.63,95% CI-2.57 to-0.69,P<0.05) and spherical-like aberrations ( SMD =-1.49,95% CI-2.22 to-0. 76,P<0. 00) after surgery. However, the number of eyes achieved UCVA≥20/20 ( OR= 1.16,95% CI 0. 61 to 2. 19,P=0. 65) ,coma-like aberrations (SMD=-1. 02,95% CI-0. 36to 0.11,P=0.29) and SE (WMD=0.10,95% CI-0.11 to 0.31,P=0.34) after surgery were comparable.Conclusion The effectiveness of Q-value guide LASIK is superior to standardized LASIK for treatment of myopia.High-quality clinical randomized-controlled study should be performed to further evaluate the comparable outcome of Q-value guide LASIK with standard LASIK.

BackgroundRetinal pigment epithelial(RPE) cells can secrete platelet-derived growth factor (PDGF) and PDGF receptor(PDGFR).Studies have shown that PDGF plays a key role in the formation of proliferative vitreous retinopathy(PVR). ObjectiveThis study was to investigate the proliferation and apoptosis changes of RPE after blockage of the PDGFR-α expression by antisense oligonucleotide ( ASODN ) in vitro. Methods Human RPE cells strain was cultured in low glucose DMEM with 10％ fetal bovine serum.Logarithmic phase cells were collected and incubated in 96-well plate at the density of 5 × 105 cells/hole.PDGFR-α ASODN was transfected into RPE cells at different concentrations for 48 hours.The cells of the blank control group were regularly cultured without any transfection.The changes of PDGFR-α expression were detected by reverse transcription-polymerase chain reaction(RT-PCR),and the proliferation of RPE was detected by MTT as the A490 value.Hoechst 33258 fluorescence staining was used to determine the apoptosis of RPE.Flow cytometry method (FCM) was applied to detect the change of cell cycle and apoptosis rate of RPE cells. ResultsThe A490 values of RPE cells were 1.45±0.12,1.07±0.06,0.65±0.05 in blank control group,1.0 μmol/L Lipo-ASODN group and 2.0 μmol/L Lipo-ASODN group with the significant difference(P=0.00 ),and that of 1.0 μmol/L Lipo-ASODN group and 2.0 μ mol/L Lipo-ASODN group were significantly lower than the blank control group ( P =0.00,0.00).Hoechst 33258 staining showed that the apoptosis cells were obviously more in Lipo-ASODN group compared with blank control group.PDGFR-α ASODN transfection induced an increase of percentage of RPE cells in G0/G1 phase( F =206.70,P =0.00),and the apoptosis rates in 1.0 μmol/L Lipo-ASODN group and 2.0 μmol/L Lipo-ASODN group were significantly enhanced in comparison with blank control group ( 37.8 ± 1.3 vs 10.5 ± 0.1,61.2 ± 1.9 vs 10.5 ± 0.1 ) ( F =1808.90,P =0.00 ).Expression intensity of PDGFR-α mRNA in RPE cells in Lipo-ASODN groups was lower. ConclusionsBlocking the PDGFR-α expression with ASODN technology can suppress proliferation and induce apoptosis of RPE cells.Intensity of PDGFR-α mRNA expression in RPE cells is ASODN dose-dependent.ASODN targeted to PDGFR-α offers an experimental basis of the gene therapy for PVR.

Background Dry eye syndrome is a frequent postoperative complication of laser in situ keratomileusis (LASIK).Some studies reported that the hinge location of corneal flap has influence on dry eye syndrome following LASIK,but others showed inverse views.Objective This systematic review was to evaluate and compare the effects of a superior-and nasal/temporal-hinge location on dry eye syndrome after LASIK.Methods A systematic literature retrieval was conducted in the Medline,Embase,Cochrane Library and CNKI from 1990 to 2011 according to designed searching strategy and relevant words.Published randomized-controlled clinical trial (RCT) data of the effect of superior-and nasal/temporal-hinge location on dry eye syndrome were extracted by two researchers separately.The outcome parameters,such as tear film breakup time (BUT),Schirmer Ⅰ test and corneal sensation were analyzed 1 week,3 months and 6-12 months postoperatively.The statistical analysis was performed using a RevMan 5.0 software and the quality of included literatures were graded according to the Jadad scale.Fixedeffect model was used for the inhomogeneity multiple studies (P≥0.1,homogeneity test I2 ＜50％),and random-effect model was used for the homogeneity studies.Results Ten pieces RCT papers were searched and 3 of them were rejected because of the lack of outcome data.In 7 included studies,652 eyes of 331 patients were involved in the Meta analysis,with the Jadad scores ≥ 3.BUT assessment was performed in 5 trials (530 eyes),Schirmer Ⅰ test evaluation was in 7 trials (652 eyes) and corneal sensation observation was in 4 trials (320 eyes),without significant homogeneity among the relevant literature(I2＜50％).Meta analysis revealed that BUT in the eyes with superior-hinge group was obvious shorter than that in the eyes nasal/temporal-hinge group at 1 week (WMD =-0.42,95％ CI:-0.79 to-0.06,P=0.020),but there was no signifieant difference in 3 months and 6-12 months duration postoperatively.Better corneal sensation was found at postoperative 3 months (WMD=-0.62,95％CI:-l.09 to-0.19,P=0.005) in the nasal/temporal-hinge group,but there was no difference in 1 week and 6-12 months duration postoperatively.No significant difference was seen between the two groups in Schirmer Ⅰ test during the follow-up period (P＞0.05).Conclusions LASIK with nasal/temporal-hinge corneal flap can improve the corneal sensation and relief the dry eye syndrome after LASIK to some extent.More high-quality evidence-based studies are still needed for the further clinical evaluation.

Background Nowadays,keratoplasty is widely used in the treatment of keratoconus.Deep lamellar keratoplasty(DLKP)is one of the research hotspots.However,its effacacy and safety are still concerned.Objective This paper was to evaluate and compare the therapeutic outcomes between DLKP and penetrating keratoplasty(PKP) for keratoconus.Methods The peer-reviewed and published literature was searched from PubMed database,Cochrane Library,EMBase and CNKI to identify relevant trails comparing DLKP with PKP for keratoconus.Methodological quality and Meta-analysis were carried out according to the principle of evidence-based medicine.The statistical analysis was performed using Review Manager 5.0 software.Results Eleven studies with 2950 eyes were identified that compared the results of DLKP and PKP procedures for keratoconus directly.Of those studies reporting vision and refractive data,less patients underwent DLKP achieved a best corrected visual acuity (BCVA)of≥0.5 than DLKP(RR=0.91,95％ CI:0.84-0.99,P=0.030) ;patients with DALK had severer myopia that those with PKP(RR =-0.60,95％ CI:-1.43-0.23,P =0.150),but the astigmatism was comparative (WMD =0.21,95％ CI:-0.48-0.91,P =0.550).Endothelial cell density values were higher in the DLKP group and the differences were significant.Endothelial immune graft rejection did not occur after DALK,and PKP had a higher overall graft rejection rate than DLKP(RR=0.06,95％ CI:0.01-0.31,P=0.001).Conclusions According to the available data,PKP can imporve the BCVA and refractive results,but DLKP can avoid the risk of endothelial rejection and reduce the risk of late endothelial failure for keratconus.

Background Sirius system,a new Scheimpflug camera combined with Placido topography,improved the capability of imaging the anterior eye segment significantly.However,the study of assessing the repeatability and agreement between Sirius and Pentacam is still lack up to now.Objective This study was to evaluate the repeatability and agreement of the anterior ocular segment measuring parameters by Sirius and Pentacam in myopia received laser in situ keratomileusis (LASIK).Methods Thirty-five myopic eyes of 35 patients received LASIK were included in School of Optometry and Ophthalmology Eye Hospital from 2010 May through 2010 July.Corneal power flat keratometry (Kf),step keratometry (Ks),mean keratometry (Km),thinnest corneal thickness(TCT),the location of TCT,anterior chamber depth (ACD) and anterior chamber volume (ACV) were measured by Sirius and Pentacam in all the eyes,respectively.The repeatability of the measuring results were evaluated using intraclass correlation coefficients (ICC) and Cronbach's coefficient alpha (CoA),and the agreement of measuring parameters between Sirius and Pentacam was analyzed using Bland-Altman plot.Results Both Sirius and Pentacam demonstrated high intraobserver repeatability,with all ICC and CoA more than 0.90.No significant differences were found in Kf values and Ks values between the two methods (t =-1.533,-1.750,P＞0.05).Km value was (39.14 ± 1.95) D by Sirius measurement,which was sígnificantly higher than (39.05 ± 1.91) D by Pentacam measurement (t =3.572,P =0.001).The TCT was (457.6 ± 40.9) μm by Sirius method,showing a significant reduce in comparison with (465.4±37.5) μm of Pentacam method (t =-6.689,P＜0.001).A positive correlation was seen in the TCT between the two methods (r=0.988,P＜0.001).The Bland-Alrman plots showed the 95％ CI-21 μm to 6 pm in the TCT value between the two devices.Pairwise comparison of the location of TCT measurements showed significant differences between the two devices (t =-4.132,-5.696,P＜0.001),with a good correlation (r=0.751,0.775) and the 95％ CI (-0.36-0.17 mm,-0.35-0.12 mm).A very good agreement was seen in ACD between the two devices (-0.02-0.12 mm),but the agreement result was not very well in the ACV between the two devices with the 95％ CI (-27.70-6.20 mm3).Conclusions Sirius and Pentacam measurements for anterior ocular segment parameters have a very good repeatability in post-LASIK eyes.In addition,good agreement results are exhibited in corneal power,TCT and ACD between Sirius and Pentacam with an acceptable maximal different value between them.Sirius and Pentacam can be used interchangeably in clinical examination.However,the two devices can not interchangeably for ACV measurement and TCT location.

Accommodation of the human eye ian extremely complex and dynamiprocess,which iaccomplished by the interaction between the central nervousystem and variouoculastructurethaare relevanto accommodation.Varioumechanismof accommodation have been puforward since the beginning of the 19th century,among which Helmhohz'theory ithe mosfamous.However,iistill challenged by othetheories.So far,the mechanism of accommodation hanobeen fully understood.The mosdirecmethod to study accommodation ito observe changein the biometry of the oculastructureduring accommodation,which ialso the mosobjective interpretation of accommodative mechanisms.The rapid developmenof imaging technologiein regardto ophthalmology makethipossible.Thiarticle aimto describe the use of variouimaging technologiein oculaaccommodative studiein vivo from the perspective of morphology.

To study the changes of pupil diameter and its effects during phacoemulsification. METHODS: Block design, prospective study. 60 cataract patients (60 eyes) were selected, which divided into two groups according to the age, young age group (group A, 20 eyes of 20 patients) and older age group (group B, 40 eyes of 40 patients). Two groups were all given compound tropicamide eye drops for fully mydriasis before operation, computer software to process images during operation, and according to the cornea amplification ratio measure pupil diameter during the operation phase: before the corneal tunnel incision ( t1 ) , after injection of sodium hyalurantae ( t2 ) , before artificial lens implantation (t3), at the end of the surgery ( t4 ). Statistical analysis of data using SPSS18. 0 software.RESULTS: The pupil diameter measurements of t1-t4 were followed respectively:group A were 8. 36 ± 0. 65, 8. 97±0. 50, 8. 67±0. 63, 8. 72±0. 96mm; group B were 7. 73± 0. 58, 8. 23 ± 0. 59, 7. 89 ± 0. 16, 7. 70 ± 0. 63mm. Overall comparisons between the two groups, the pupil diameter measurements had differences during the operation phase ( F = 26. 696, P< 0. 05 ). Comparisons between the two groups at different time points: the pupil diameter of t1-t4 in group A was larger than that in group B, with statistically differences (P<0. 05). The pupil diameter of each groups had a tendency to change in different operation phrases, with no statistically differences (F=2. 617,P>0. 05). Comparisons in a group at different time points: the pupil diameter of t2 was larger than that in t1, with statistically differences ( P>0. 05), the pupil diameter of t3 and t4 were decreased in group B, with statistically differences (P<0. 05).CONCLUSlON: Compound tropicamide eye drops are given for mydriasis before operation, young patients with cataract and senile patients with cataract can achieve the effect of surgery for mydriasis, the pupil stability of phacoemulsification in senile patients with cataract are lower than that in young patients with cataract.