Objective To explore high-risk factors that affect the severity of diabetic foot ulcers and the relationship between the severity of diabetic foot ulcers and the general somatic conditions by analyzing clinical data of 218 diabetic foot patients.Methods A retrospective analysis of the clinical data of 218 diabetic foot patients,admitted from 2006 to 2010 was performed.Fasting and postprandial blood glucose ( FBG and PBG ),glycosylated hemoglobin,hemoglobin,serum albumin,serum creatinine,as well as serum urea nitrogen and fibrinogen were determined in patients with different Wagner levels.The effects of peripheral arterial disease,neuropathy,infections and other factors on severity of diabetic foot ulcers,and the prognosis of those patients with different Wagner levels were analyzed.Results ( 1 ) FBG and PBG in Wagner 5 patients were significantly higher than those in Wagner 1,but there was no statistical significance in HbA1C difference.(2) Hemoglobin,total cholesterol,serum albumin in Wagner 5 patients were decreased significantly ; white blood cells,serum creatinine and fibrinogen were increased significantly ( P＜0.01 ).(3) The intima-media thickness(IMT) of femoral artery in Wagner 2-and-above patients was increased significantly compared with that in Wagner 1 ( P＜0.05 ).( 4 ) Logistic regression analysis showed that hemoglobin,fibrinogen,glycated hemoglobin,femoral artery intima-media thickness,and bacterial infection were correlated independently with the severity of diabetic foot ulcers.(5) The hospitalized days were increased with rising Wagner levels ; the prognosis of Wagner 5 patients was the worst,with the highest mortality in the group.Conclusions Changes in blood level of hemoglobin,fibrinogen,along with higher HbA1C and femoral artery IMT,as well as infections are high-risk factors of severity in diabetic foot patients.HbA1C is not a good indicator of blood glucose control in patients with Wagner 5 grade.The higher the Wagner grade,the longer the time spent in hospital,and the worse the prognosis wouldbe.

The relationship between visfatin.endothelin, and insulin resistance in the pathogenesis of type 2 diabetes mellitus was explored. Endothelin, visfatin, and other markers were compared. Plasma visfatin was reduced after therapy. Endothelin was positively correlated with fasting insulin, HOMA-IR, HOMA-p, and visfatin. Visfatin was positively correlated with endothelin, HbA1C , fasting insulin, and HOMA-IR. HOMA-IR was an independent related factor in influencing visfatin. The visfatin is related to endothelin and insulin resistance, which may contribute to the pathogenesis of insulin resistance and type 2 diabetes mellitus.

Objective:To observe the changes of macular microvascular structure and macular pigment density (MPOD) in eyes with macular edema (ME) secondary to retinal vein occlusion (RVO), and preliminarily analyze their correlation.Methods:A prospective clinical study. A total of 62 eyes of 62 patients with monocular RVO secondary ME (RVO-ME) diagnosed in the Ophthalmology Hospital of Xi'an No.1 Hospital from July 2020 to May 2021 were included in this study. There were 33 males with 33 eyes, 29 females with 29 eyes. The age was 58.30±12.15 years. The course of disease from the onset of symptoms to medical treatment was 12.29±7.65 days. All patients underwent best corrected visual acuity (BCVA), optical coherence tomography angiography (OCTA) and MPOD test. BCVA examination was performed using a standard logarithmic visual acuity chart, which was converted to logarithm of minimum angle of resolution (logMAR). The vascular density (VD), vascular skeletal density (SD), foveal avascular area (FAZ) and central macular thickness (CMT) of the superficial retinal capillary plexus (SCP) in the range of 3 mm×3 mm in the macular area of bilateral eyes were measured by OCTA. MPOD was measured by heterochromatic scintillation photometry. Bilateral eyes passed examination in 37 cases. The eyes of 25 patients failed to pass the test. The changes of macular VD, SD, FAZ area, CMT and MPOD between the affected eyes and the contralateral eyes were compared. The MPOD of the affected eye and the contralateral eye was compared by paired t test. FAZ area, CMT, VD, SD, and logMAR BCVA were tested by paired Wilcoxon signed rank sum test. Spearman rank correlation test was used to analyze the correlation between macular blood flow density (VD, SD) and foveal morphology (FAZ area, CMT) with logMAR BCVA and MPOD. Results:Compared with contralateral eyes, VD ( Z=-5.981) and SD ( Z=-6.021) were decreased, FAZ area ( Z=-2.598) and CMT ( Z=-6.206) were increased, and the differences were statistically significant ( P<0.05). In 37 patients who passed MPOD test in bilateral eyes, the MPOD value of the affected eye was lower than that of the contralateral eye, and the difference was statistically significant ( t=-2.930, P<0.05). Compared with the affected eye which failed to pass the MPOD detection, macular VD ( Z=-2.807) and SD ( Z=-2.460) were increased, FAZ area ( Z=-4.297) and CMT ( Z=-3.796) were decreased in the affected eye which passed the MPOD test, and the differences were statistically significant ( P<0.05). Correlation analysis showed that logMAR BCVA in the affected eye was negatively correlated with macular VD and SD ( r=-0.298, -0.461; P<0.05), which was positively correlated with FAZ area and CMT ( r=0.487, 0.789; P<0.05). MPOD in the affected eye was negatively correlated with logMAR BCVA ( r=-0.344, P<0.05). MPOD in the contralateral eye was positively correlated with CMT ( r=0.358, P<0.05). Conclusions:The VD and SD of macular SCP are decreased, FAZ area is enlarged, CMT is thickened, and MPOD is decreased in RVO-ME eyes. MPOD is negatively correlated with logMAR BCVA.

In order to study the efficiency of small interfering RNA (siRNA) transfer mediated by cationic liposome, we used luciferase siRNA to evaluate the gene silencing activity in the Hep-2 cells, which were stably transduced with a luciferase gene. The pDNA transfection was studied, and siRNA arrearage assay was conducted to determine the capability of cationic liposome with siRNA. Different concentrations of siRNA was used to silence luciferase gene' activity, and then the result was examined by microplate reader. Cell viability was analyzed after transfection by MTT assay. The results suggested that Lipofectamine 2000 could transfer the pDNA efficiently, and have strong binding capacity with siRNA. The silencing efficiency of luciferase was obtained with low concentration of siRNA. The cell viability was influenced by RNA interference (RNAi) very slightly, but the cell survival rate decreased with the increase of siRNA concentrations. It was well concluded that by optimizing the experimental conditions, cationic liposome can transfer low concentration siRNA to silence target gene's activity efficiently.
Cations ; chemistry ; Drug Carriers ; Genetic Vectors ; Hep G2 Cells ; Humans ; Lipids ; chemistry ; Liposomes ; chemistry ; Luciferases ; genetics ; RNA Interference ; RNA, Small Interfering ; genetics ; Transfection

AIM: To investigate the effects of isonlosinine on proliferation, invasion, migration and autophagy of PC9 cells in non-small cell lung cancer (NSCLC), and to explore its possible molecular mechanism. METHODS: The effect of Isoliensinine on the proliferation of PC9 cells were measured by CCK-8 assay, and the IC50 value of PC9 cells was calculated. Wound healing and transwell experiments were used to study the effect of Isoliensinine on migration and invasion of PC9 cells in vitro, respectively. The formation of autophagosome was observed with acridine orange staining under fluorescence microscope. The expression levels of LC3, pERK and ERK in the PC9 cells were determined by western blot. RESULTS: Isonlosinine significantly inhibited the proliferation of PC9 cells. IC50 of isonlosinine (24 h) for the PC9 cells was 34.11 µmol / L. Isonlosinine significantly inhibited cell migration and invasion of PC9 cells. The results of acridine orange fluorescent staining showed that the number of the intracellular acid dye follicular bright red fluorescence in PC9 cells was significantly increased after isonlosinine treatment, while the autophagic lysosomes were rarely observed in control group. The expression of LC3-II in PC9 cells was significantly enhanced after isonlosinine treatment. Furthermore, molecular mechanism study showed that isonlosinine could activate the expression level of p-ERK. CONCLUSION: Isoliensinine significantly inhibits the proliferation, migration and invasion, and induces autophagy of PC9 cells, which may be correlated with the activation of ERK signaling pathway.

Objective: To prepare an adhesive hemostatic hydrogel and examine its hemostatic performance and biocompatibility． Methods: The precursor components were homogenously dissolved and photo-crosslinked in order to form dual-network hydrogel．The electron microscopy morphology was then analyzed ; mechanical properties were tested ; in vitro hemostatic performances were investigated by whole blood clotting test and simulation trial of cutaneous bleeding．Further，the hemocompatibility was evaluated. Results: A characteristic porous network structure was presented through microscopy observation of the sample．The tensile strength of hydrogel reached 46 kPa，and strong adhesion was achieved between the hydrogel and ex vivo biological tissues．Hydrogel had significant effect on wound closure and clotting time could be shortened to 1 minute． Conclusion The hydrogel was capable of accelerating coagulation due to its ability to accumulate platelets and red cells after blood contact．The dual-network hydrogel with good hemocompatibility enabled excellent hemostatic performance by the synergistic effects of the chemical activation mechanism and physical hemostatic effect.