BACKGROUND: High blood lipid can cause a series of cardiovascular and cerebrovascular disease, which has been commonly accepted.OBJECTIVE: To probe into the rule of changes of blood lipid of the elders in aging process.DESIGN: Cross section survey.SETTING: Department of Nutrition, Shanghai Huadong Hospital. PARTICIPANTS: Totally 605 employees who took part in body examination and participated this experiment voluntarily from July 2000 to August 2004, were recruited, including 541 males and 64 females, 91 patients ＜ 70 years , 514 ≥ 70 years, 271 patients having the history of coronary heart disease, 83 of malignant tumors, and 251 of other diseases.METHODS: Blood lipid level of totally 605 who accepted physical examination was detected, at the same times, the disease history and common physical examination status were inquired. Venous blood of the patients was drawn after fasting over 12 hours, separating serum on the morning of the same day. Total cholesterol and triacylglycerol of the blood were detected with enzyme assay by using Automated Biochemistry Analyzer. Total cholesterol: 3.6-6.5 mmol/L; triglyceride: 0.4-1.8 mmol/L were considered as normal level, Total cholesterol: ＞ 5.72 mmol/L;Triglyceride: ＞1.72 mmol/L were considered as abnormal criteria.MAIN OUTCOME MEASURES: Comparison of the blood lipid index of the subjects of different age, disease type and gender RESULTS: Totally 605 elders were involved and all data of them was enthe blood lipid index of the subjects of different age: Peak of total cholesterol appeared at 70 to 74 years, then decreases gradually, the total cholesterol level of the subjects of 70 to 74 years was significantly higher than that at other age (P ＜ 0.05). While Triglyceride level had the trend of going up with growing older, except that of 75-79 ages group slightly went eases: The level of total cholesterol and triglyceride of the subjects in the malignant tumor group was lower than that of other disease groups, level of triglyceride of the subjects in the coronary heart disease was higher than detection rate of blood lipid of the subjects: Detection rate of total cholesterol was 15.5%, while that of triglyceride was 35.9%. There was no significant difference of the detection rate between male and female subjects (P ＞ 0.05).CONCLUSION: Change of blood lipid metabolism of elder with aging is related to the hormone change of different genders and disease types.

Objective To evaluate the effects of adenovirus-thediated PTEN gene transfer on growth and invasion of H22 cells in vitro. Methods H22 cells were tnmsfected with Ad-PTEN and Ad-PTENG-129R it vitro, The mRNA expressions of PTEN were detected with RT-PCR. Cell viability was determined by MTT assay. Invasion of H22 in vitro was observed using Boyden chamber. Results Gene and protein expressions of PTEN were shown to be up-regulated when H22 was transfected with Ad-PTEN. MTT assay showed that the group transfected with Ad-PTEN had much lower cell viability than other groups (P<0.05) . The number of 1422 invasion cells in the group of Ad-PTEN was (15.64±3.27) %, which was lower than the number in other groups (P<0.05). Conclusion These results imply that the number of H22 invasion cells was significantly decreased after infected with Ad-PTEN in vitro.

Distributed architectures support increased load on popular web sites by dispatching client requests transparently among multiple servers in a cluster. Packet Single-Rewriting technology and client address hashing algorithm in ONE-IP technology which can ensure application-session-keep have been analyzed, an improved request dispatching algorithm which is simple, effective and supports dynamic load balance has been proposed. In this algorithm, dispatcher evaluates which server node will process request by applying a hash function to the client IP address and comparing the result with its assigned identifier subset; it adjusts the size of the subset according to the performance and current load of each server, so as to utilize all servers' resource effectively. Simulation shows that the improved algorithm has better performance than the original one.

Objective To discuss the safety of nephron sparing surgery for central renal tumors. Methods Thirty-eight cases of partial nephrectomies for central type renal masses were performed.One hundred and seventeen cases of partial nephrectomies with peripheral type renal tumors were compared. Results For the patients with central renal tumors,mean operative time was 118 minutes.Mean isehemic time was 34 minutes.Mean blood loss was 150 ml.The major postoperative complication included leakage of urine(1 case).For the patients with peripheral based tumors,mean operative time was 95 minutes.Mean ischemic time was 21 minutes(only renal artery clamped)and 17 minutes(complete block).Mean blood loss was 250 ml(only renal artery clamped)and 100 ml(complete block).The major postoperative complication included postoperative bleeding(4 cases). Conclusion According to the standard operative procedure,the nephron sparing surgery for central renal tumors is a safe procedure.

Objective To study a new closed medical waste transportation vehicle. Methods The carriage,doors,floor drains pipes and spray system are all used in stainless steel materials with made through the welding. Results The vehicle can protect medical staffs from pollution of medical waste and enhance occupational health protection for staff. Conclusion The vehicle is closed that has the function of 360? spray cleaning and disinfection system,and it many advantages such as the use of safe,effective,energy saving,convenient and development application.

China ; Humans ; Laparoscopy ; education ; Mentors ; Urology ; education

The microstructure of cationic cyclopeptide (TD-34) treated Caco-2 cell membrane was observed, and we discussed the relationship between membrane structure and insulin transmembrane permeability. Atomic force microscope (AFM) was used to observe living cell membrane in air condition and tapping mode. Results showed that the surface of Caco-2 cell membrane treated with TD-34 lost its smoothness and nearly doubled its roughness. Apparent permeability coefficients (P(app)) of insulin in Caco-2 cell monolayers increased 2.5 times. In conclusion, AFM can be used to observe microstructure of cationic cyclopeptide treated cell membrane and cationic cyclopeptide enhanced insulin delivery across Caco-2 cell membrane by increasing membrane fluidity.

Objective To study normal flora components of conjunctiva, explore the relationship between normal flora and ocu- lar bacterial infections.Methods The data of 1 198 bacterial cultures of conjunctiva in non-infectious cataract patients were re- viewed and compared with the results of 985 specimens of conjunctivitis, keratitis and endophthalmitis from January 2000 to December 2004.Results Positive culture of conjunctiva in non-infectious cataract patients was 628 in 1 198 specimens (52.4%).These bacteria including gram-positive cocci and gram-neganve bacilli constituted the normal flora of conjunctiva. Staphylococcus epidermidis was the predominant bacteria (51.1%, 341/667) and its prevalence increased during this 5-year period.S.epidermidis and S.aureus were also the most frequently isolated pathogens in specimens of conjunctivitis, keratitis and endophthalmitis.The correlation was statistically significant between the positive rate in normal eye and conjunctivitis or keratitis in terms of these two species, but not statistically significant between normal eye and endophthalmitis.The resistance rate of normal flora of conjunctiva to ampicillin, amikacin, tobramycin, ciprofloxacin, and ofloxacin increased year by year. The resistance rate to gentamicin and the combination of two drugs decreased.The changing resistant pattern was similar in pa- tients with eye infection.Conclusions There is a close relationship between the normal flora S.aureus and S.epidermidis of conjunctiva and the bacterial infection of ocular surface, but no significant correlation between normal flora and the pathogen of endophthalmitis.

Objective:To investigate the expression of TAZ and KLF5 and their clinical significance in hepatocellular carcinoma ( HCC).Methods:We freshly collected 76 samples of surgically resected HCC and matched normal tumor-adjacent tissues and detected TAZ and KLF5 expression in these samples using immunohistochemical staining.The clinical significance of TAZ and KLF5 protein expression were analysed.Results:The protein expression of TAZ and KLF5 in HCC tissues was significantly higher than those in matched normal tumor-adjacent tissues ( P=0.001;P=0.035 ).Clinicopathological analysis suggested that TAZ and KLF5 protein expression were associated with histopathological differentiation ( P=0.007;P=0.047 ) and TNM stage ( P=0.009;P=0.040).TAZ was positively correlated with KLF5 protein in HCC tissues (r=0.651,P=0.003).Conclusion:The high-expression of TAZ and KLF5 are correlated with poor clinicopathological characteristics,and TAZ is positively associated with KLF5 in HCC tissues, suggesting that TAZ may promote tumor progression through inhibition of KLF5 protein degradation in HCC.

Objective To observe the clinical features, phenotypes and genotypes in a Chinese family with choroideremia (CHM). Methods A Chinese four-generation family (15 members) with CHM, including 5 patients (4 males/1 female), 2 female carriers and 8 healthy members, was enrolled in this study. Initially all family members underwent best corrected visual acuity (BCVA), indirect ophthalmoscopy, fundus fluorescein angiography, optical coherence tomography (OCT), visual field and full view electroretinogram (ERG). BCVA was followed up for 3 years. Venous blood samples were collected, and all of the 15 coding exons and flanking intron regions were amplified in the proband by polymerase chain reaction followed by direct sequencing. Protein structure was modeled based on the protein data bank and mutations in DeepView v4.0.1 to predict the effect of the mutations. A total of 180 healthy volunteers were enrolled as control group to matching CHM gene sequences. Results The visual acuity (VA) of 3/4 adult male patients began to decrease at less than 10, 10 and 30 years old, the average BCVA was 0.43. There were characteristic signs and symptoms of CHM including narrow visual field, extinguished rod and cone response in ERG, disappeared junction line and intermediate line of photoreceptor inner segment/outer segment on OCT. After 3 years, the mean BCVA decreased to 0.11. The BCVA of one young male patient was 1.0 in both eyes with minor changes fundus and visual field. The VA of the female patient began to decrease at 50 years old, her BCVA of two eyes were 0.5 and 0.25, respectively. The fundus changes were typical of CHM, with relative scotomas in the peripheral visual field of OD, and big scotomas in the OS. After 3 years, her mean BCVA decreased to 0.2. Of 2 female carriers, one had minor fundus changes (patches of pigmentary deposits, atrophy spots of retinal pigment epithelium cells), and the other was normal. A novel heterozygous c.1837G>A mutation in exon 15 of CHM was detected in the proband, which resulted in the substitution of serine by proline at codon 613 (p.D613N). Based on molecular modeling, the misfolded protein caused by the mutation might destabilize the structure of the helix that potentially could affect the global stability of the Rep-1 protein. Conclusions A novel c.1837G>A (p.D613N) mutation may be the causative mutation for CHM in this family. Female CHM carriers may have some signs and symptoms.