Diabetic macular edema ( DME ) is a major cause of visual impairment in patients with diabetes mellitus, the central retinal thickness ( CRT ) is correlated with the visual impairment and the changes of visual function before and after treatment. Furthermore, CRT is related to the changes of macular microstructure. The subtle changes of retinal microstructure can be qualitative and quantitative analyzed by spectral- domain OCT ( SD -OCT) . In this study, the changes of retinal microstructure in patients with DME are reviewed, what is of great meaning to explore mechanism, observe disease progress, guide clinical treatment and prospect prognosis of DME.

Internet-based tendering system makes equipment purchase convenient,rapid,effective,economical and fair. This system guarantees the legal benefits of the medical organizations and suppliers to the most. At the same time this article introduces some issues that should be noticed by medical organizations and suppliers when they participate the on-line bid.

The medical equipment on-line bid is a newborn method for bid,which unites the modern computer technology,communication technology and electronic commerce technology. When the on-line bid system is applied,except for the make of comprehensive and standard tender documents,the followings also claim attention: how to correctly open the webpage of video meeting inserter,how to suitably adjust video acoustics,and how to properly adjust video images.

To detect the expression of p16 protein and Ki-67 antigen in gastric mucosa-associated lymphoid tissue lymphoma(MALTL)and normal gastric mucosa and to investigate the clinical significance of their expression in the occurrence and development of gastric MALTL.Methods 47 samples of gastric MALTL diagnosed pathologically in the department of pathology of the PLA General Hospital from March 1993 to June 2005 were collected.By using immunohistochemial methods,the expression of p16 protein and Ki-67 antigen was detected in 20 samples of normal gastric tissue and the 47 samples of gastric MALTL.Results The positive rate of p16 protein Was 21.3%(10/47)and 90.0% in gastric MALTL and normal gastric tissue respectively.The positive rate of p16 protein in gastric MALTL was lower than that in normal gastric tissue(P<0.05).The expression of p16 was related to the degree of lymph node metastasis.The positive rate of Ki-67 labelling index(LI)in gnstric MALTL was hiigher than that in normal gastric tissue.A negative correlation was found between the expression of p16 protein and Ki-67 LI(P<0.05). Conclusions Detection p16 and Ki-67 may help to predict the possibility of lymph node metastasis and prognosis in gastric MALTL.

Animals ; HSP72 Heat-Shock Proteins ; metabolism ; Hypoxia ; metabolism ; physiopathology ; Male ; Motor Activity ; physiology ; Muscle, Skeletal ; metabolism ; Oxygen ; metabolism ; Physical Exertion ; physiology ; Rats ; Rats, Sprague-Dawley ; Time Factors

This study aimed to use the sika deer as a model to study the influence of IGF-1 on the expression of Col Ⅰ in antler chondrocytes.The chondrocytes were separated from sika deer antlers,cultured and were treated with recombinant human IGF-1 protein (rIGF-1),both rIGF-1 and PQ401,and transfected with IGF-1 over-expression plasmid or IGF-1 siRNA,respectively.The expression of Col Ⅰ which,a well-known marker for chondrocytes dedifferentiation,was detected by real-time PCR.The results showed that administration of rIGF-1 to antler chondroctyes resulted in an obvious decrease of Col Ⅰ mRNA levels,while PQ401 pretreatment could dramatically attenuate the effects of rIGF-1 on the expression of Col Ⅰ mRNA.After transfection with IGF-1 over-expression plasmid,the expression of Col Ⅰ mRNA was obviously reduced in antler chondrocytes compared with control.Conversely,knockdown IGF1 with specific siRNA could increase the expression of Col Ⅰ in antler chondrocytes.These results indicate that IGF-1 may play an important role in process of antler chondrocyte dedifferentiation.

Objective:To investigate the application of lateral upper arm free flap in the repair of postoperative soft tissue defects after operation in the patients with tongue cancer, and to evaluate its survival rate and repair effect. Methods:Ten patients with tongue cancer, having a desire to repair soft tissue defect after tongue cancer operation, and their systemic state could tolerate the long time operation, were selected to repair tongue cancer postoperative defects with lateral upper arm flaps. Among them, 7 cases were male, 3 cases were female;aged 45-67 years old, average 52.1 years old.Radical resection of tongue cancer was primarily finished, then the flaps were designed and prepared to repair the defects of tongue according to the location and size of defects.After the operation, the survival rate of the flap was observed, and the effect of repair was evaluated according to the shape, size, volume and movement of the tongue.Results:The lateral upper arm flaps were stable and simple to prepare, the donor sites were concealed, and the upper limbs were not abnormal.All of flaps survived, and all of wounds healed primarily.The shape, size, and texture of tongues were satisfied, and the movements of tongue were not significantly restricted.After repair, the voice, mastication and swallowing function of the patients were good without obvious influence.Conclusion:The survival rate of lateral flap of upper arm is high, and the tongue shape and function were good after tongue defect repair.It is an ideal free flap for repairing the tongue tissue defect of tongue cancer after operation.

Objective To establish tissue biobank of osteoarthritis in Beijing Jishuitan Hospital to promote orthopedic research study in China.Methods Fresh tissue or blood samples were collected from patients who underwent surgical operation for osteoarthritis since July 2007.Clinical information of the patientswasalsocollected.MicrosoftAccessdatabasesystemwasusedforthemanagementof information.Results From July 2007 to November 2011,a total of 2605 medical records and15188 tissue or blood samples were collected.Among them,165 tissue samples and 2005 blood samples were provided for molecular biology or epidemiological research.Conclusion Human tissue biobank is important for research work.Present osteoarthritis tissue collection and storage is feasible and could supply quality samples for study.

OBJECTIVETo analyze the neglected hidden blood loss before and after operations in the elderly patients with intertrochanteric fractures and strengthen the treatment and clinical nursing in the perioperative period in order to ensure clinical effects.

METHODSThe clinical data of 99 patients with intertrochanteric fracture treated with intramedullary nailing from January 2010 to January 2014 were retrospectively analyzed (47 males and 52 females). Forty-seven cases got blood transfusion supporting and 52 cases were not (blood transfusion group and no-blood transfusion group respectively). According to the Gross equation, the average hemoglobin (Hb) and hematocrit (HCT) were used to analyze blood loss in perioperative period and assess the patients' hidden blood loss situation.

RESULTSThere were 22 males and 30 females in blood transfusion group. The average operative time was (62.13±4.01) min; intraoperative visible blood loss and postoperative drainage were 215 ml, totally; preoperative Hb was (103.22±9.01) g/L and postoperative was (81.13±6.20) g/L; preoperative HCT was (96.93±3.38) I/L and postoperative was (308.00±11.81) I/L. There were 25 males and 22 females in no-blood transfusion group. The average operative time was (60.12±3.27) min; intraoperative visible blood loss and postoperative drainage were 196 ml, totally; the average blood transfusion were 621 ml; preoperative Hb was (92.15±5.46) g/L and preoperative was (95.20±8.93) g/L; preoperative HCT was (96.52±3.63) I/L and preoperative was (392.70±14.03) I/L. According to the Gross equation, the blood loss of no-blood transfusion group and blood transfusion group in peroperative period were (937.29±63.04) ml and (706.43±35.02) ml, respectively. The hidden blood loss was dominant. At 1, 3 months after operation, Harris score of blood transfusion group was better than that of no-blood transfusion group, and 12 months after operation, there was no significant difference between two groups.

CONCLUSIONThe hidden blood loss of intramedullary nailing for intertrochanteric fracture should be emphasized in perioperative period, it can avoid the perioperative complications caused by anemia and affect the prognosis of patients.

Aged ; Blood Loss, Surgical ; Blood Transfusion ; Case-Control Studies ; Female ; Fracture Fixation, Intramedullary ; adverse effects ; methods ; Hip Fractures ; surgery ; Humans ; Male ; Middle Aged ; Operative Time ; Perioperative Period ; Retrospective Studies

A lactoferrin-containing PEGylated liposome system (Lf-PLS) was developed and tested in vitro as a hepatoma-targeting drug delivery system. PEGylated liposomes (PLS) were successfully prepared using the thin film hydration method with peglipid post insertion. Lf was covalently conjugated onto the carboxyl terminal of DSPE-PEG2000-COOH on liposomes. Coumarin-6 was used to trace Lf-PLS with fluorescence. The cellular uptake of this system was carried out in asialoglycoprotein receptor (ASGPR) positive HepG2 cells via confocal microscopy and flow cytometry. The Lf-PLS liposome was observed as spherical or oval vesicles with the particle size around 130 nm, zeta potential about -30 mV and encapsulation efficiency more than 80%. The confocal microscopy images and flow cytometry data demonstrated that Lf-PLS resulted in significantly higher cell association by ASGPR positive HepG2 cells compared to PLS. The association between Lf-PLS and cells were dependent on the concentration, time and temperature, which was inhibited by pre-incubation with excessive free Lf. The results suggest that Lf-PLS has a good targeting effect on HepG2 cells in vitro. The targeting mechanism may be related to the specific binding of Lf and ASGPR on HepG2 cells, which guides Lf-PLS to the cell surface to induce an active endocytosis process. All these results demonstrated that Lf-PLS might be a potential drug delivery system in targeting hepatocellular carcinoma, which deserves more research on its targeting ability, antitumor efficiency, and metabolism in vivo for treatment of hepatomacellular carcinoma.
Asialoglycoprotein Receptor ; metabolism ; Carcinoma, Hepatocellular ; pathology ; Coumarins ; Drug Delivery Systems ; Endocytosis ; Hep G2 Cells ; drug effects ; Humans ; Lactoferrin ; pharmacology ; Liposomes ; Liver Neoplasms ; pathology ; Particle Size ; Phosphatidylethanolamines ; Polyethylene Glycols ; Thiazoles