Mitochondria ATP synthase is a key enzyme in cellular energy interconversion. It is generally believed that ATP synthase is strictly confined to mitochondria. However, it has been demonstrated that ATP synthase also occurs on the extracellular surface of vascular endothelial cells, tumor cells and adipocytes, instead of normal cells. Based on this characteristic, many functional researches have been conducted on the angiogenesis, tumor inhibition and lipid metabolism, and the mechanism on which this enzyme works has been preliminarily elucidated. The research advances in cell-surface ATP synthase are reviewed in this paper.

Objective To study the expression of BMI-l gene in children with acute leukemia and its clinical significance.Methods The clinical specimens of 46 children with acute leukemia who were diagnosed lately in the Third Affiliated Hospital of Zhengzhou University and other hospitals in Zhengzhou from Jul.1,2008 to Apr.30,2009 were collected,while peripheral blood specimens of 30 healthy children were collected as control group.With the guardians′ informed consent,the experiment was approved through the hospital ethics committee.The level of BMI-1 mRNA′s expression was tested using reverse transcription-polymerase chain reaction(RT-PCR),while data were analyzed through the application of SPSS 12.0 statistical software.Results 1.The level of BMI-l gene′s expression in children with acute leukemia was significantly higher than that in control group(P0.05),after complete remission,BMI-1 mRNA was not detected in the 2 groups;4.Compared with the complete remission group,expression of BMI-1 mRNA in the untreated group and the recurrence group was significantly higher(P0.05).Conclusions BMI-1 gene was highly expressed in children with acute leukemia,and the level of the gene expression in patients of complete remission normalized,which suggests that the gene may be involved in the occurrence and the development process of leukemia;therefore,it is possible to regard the gene as a molecular marker to evaluate the development,relapse and prognosis of the patients with acute leukemia.

Three-dimensional virtual surgery experiment is the application of virtual reality technology in the medical field.Doctors use the information in the virtual environment to develop surgical planning,surgical drills.surgical teaching,surgical skills training,to lead the surgical technique and postoperative rehabilitation,and the information is available for surgery every sur-gical member to share.Virtual Surgery experiments combined with the real operation together constitute complete experimental teaching system,making telemedicine experimental teaching methods and teaching content rich and varied.

Objective To study and solve the repairing and reconstruction characteristic for chronic radioactivity ulceration on chest wall.Methods Using transverse rectus abdominis musculocutaneous flaps (TRAM) to repair and reconstruct 12 cases serious chronic radioactivity ulceration after radical operation of mastocarcinoma.Including 6 cases using single pedicle TRAM flaps, 6 cases using double pedicle TRAM flaps.Results All 12 cases were applied successfully with 100% survived and were followed-up for 1 to 4 years.There were better colour, texture, elasticity on flap and obviously improvement for cicatricial tissue round ulceration.Conclusion It is better choice for repairing chronic radioactivity ulceration on chest wall with transverse rectus abdominis musculocutaneous flaps and it is also reliable method for flap circulation using double pedicle TRAM flaps by vascular anastomosis.

Objective To evaluate the effects and safety of PercuSurge distal protection device(DPD) in coronary intervention in patients with acute myocardial infarction. Methods From December 2003 to December 2005, 174 acute myocardial infarction patients who received primary coronary intervention were included into this study. Patients were divided into the DPD group (n=78) and the control group (n=96) according to whether Percusurge DPD was attempted during emergency PCI. The basic clinical characteristics, angiographic results, and follow up data before discharge were compared. TIMI flow grades and myocardial blush grades were performed in all cases after emergency PCI. Results Success application was achieved in 72 out of 78 patients with PercuSurge DPD with varies extent of material collected from the basket. There was no significant difference between the two groups in basic clinical characteristics and angiogram before PCI. Post-PCI TIMI flow grades (94.9% vs 79.2%) and myocardial blush grades (2.65?0.68 vs 2.22?0.94) were significantly higher in the DPD guoup than in the control group(P

BACKGROUND: Observation and comparison about space-occupying lesions due to herniated nucleus pulposus, as well as nerve root compression in lumbosacral disc herniation and manipulative therapy are easily available; however, there is still lack of related quantitative research regarding the internal pressure in herniated nucleus pulposus.OBJECTIVE: To observe the influence of the internal pressure in herniated nucleus pulposus on nerve root compression in patients with lumbosacral disc herniation.DESIGN: Case control study.SETTING: Bone Setting Therapeutic Center, the Air Force General Hospital of Chinese PLA.PARTICIPANTS: Totally 30 patients with lumbosacral disc herniation received operation in the Orthopedic Department of the Air Force General Hospital between October 2002 and December 2003; meanwhile, 15 patients with lumbosacral disc herniation received manipulative therapy in the Bone Setting Therapeutic Center of the same hospital.ing positive group and negative group according to the results of straight leg raising test. The pressure in herniated nucleus pulposus was detected during operation, and the straight leg raising height was also recorded beThe size of intervertebral disk herniated nucleus was presented by the maximum vertical distance from the intervertebral disk herniating apex to the posterior edge of vertebra on CT and/or MRI transverse section.raising height.RESULTS:Totally 30 patients received operative treatment whereas 15The pressure in lumbosacral disc herniated nucleus andthe size of herniated nucleus pulposus: as for patients who received operation, the pressure in herniated nucleus pulposus was obviously higher in positive group than in negative group [(2.119±0.753), (0.483±0.420) kPa, P ＜ 0.01]. However,the size of herniated nucleus pulposus was not significantly different between positive group and negative group [(4.688±1.991), (4.857±2.033) mm,nipulative therapy, their straight leg raising height was obviously increased compared to that before operation [(54.000±16.388)°, (72.668±15.338)°,P ＜ 0.01], but the size of herniated nucleus pulposus was proved not obviously changed by CT or MRI examination after manipulative therapy (P ＞ 0.05).cleus pulposus on nerve root is related to the iuternal pressure of herniated nucleus pulposus; higher internal pressure in herniated nucleus pulposus would limit straight leg raising height while lower internal pressure has less effect. However, the compression of herniated nucleus pulposus on nerve root has no obvious relationship with the size of herniated nucleus compression by reducing the internal pressure in herniated nucleus pulposus, which may not only depend on changing the space-occupying of herniated nucleus pulposus.

Background:The incidence of duodenal Brunner’s gland hyperplasia is low and the etiology and pathogenesis has not yet been clarified. Aims:To investigate the relationship between duodenal Brunner’s gland hyperplasia and Helicobacter pylori( Hp ) infection. Methods:A total of 96 patients with duodenal Brunner ’s gland hyperplasia diagnosed by pathological examination from October 2005 to December 2013 at People’s Hospital of Xinjiang Uygur Autonomous Region were enrolled in this study,and 270 cases without duodenal Brunner’s gland hyperplasia were served as controls. Hp infection was detected by 14 C-urea breath test( 14 C-UBT). The relationship between duodenal Brunner’s gland hyperplasia and Hp infection was analyzed. Results:In the duodenal Brunner ’s gland hyperplasia group,75 patients were Hp positive,the proportion of Hp infection was 3. 57( 75/21 ). In the control group,110 cases were Hp positive,the proportion of Hp infection was 1. 45(160/110). The difference between the two groups was statistically significant(χ2 =10. 97,P=0. 001). Hp infection was a risk factor of the genesis of duodenal Brunner’s gland hyperplasia( OR=2. 46, 95% CI:1. 44-4. 19). Conclusions:Hp infection may be related with the genesis of duodenal Brunner’s gland hyperplasia.

This study investigated the role of glucose in the biogenesis of high-density lipoprotein cholesterol (HDL-C). Mouse primary peritoneal macrophages were harvested and maintained in Dulbecco's modified Eagle's medium (DMEM) containing glucose of various concentrations. The cells were divided into 3 groups in terms of different glucose concentrations in the cultures: Control group (5.6 mmol/L glucose), high glucose concentration groups (16.7 mmol/L and 30 mmol/L glucose). ATP-binding cassette transporter A1 (ABCA1) mRNA expression in the macrophages was detected by semi-quantitative RT-PCR 24, 48 and 72 h after glucose treatment. The results showed that ABCA1 mRNA expression in the 16.7 mmol/L glucose group was not significantly different from that in the control group at all testing time points (P>0.05 for each). In the 30 mmol/L glucose group, macrophage ABCA1 mRNA expression was not changed significantly at 24 h (P=0.14), but was substantially decreased by 40.4% at 48 h (P=0.009) and by 48.1% at 72 h (P=0.015) as compared with that in the control group. It was concluded that ABCA1 is of vital importance for HDL-C biogenesis. High glucose may hamper HDL-C biogenesis by decreasing ABCA1 expression, which contributes to low HDL-C level in diabetes.

Objective To learn the existing state of Keshan disease and its trend in Baoji City,and to provide a scientific basis for control of the disease.Methods Feng,Qianyang,Linyou and Long Counties,the Keshan disease affected areas were selected to carry out the case study,and Keshan cases were searched from all registered cases of myocardial patients of the past three years at county-level medical institutions and hospitals of townships(towns).Thirteen villages affected by Keshan disease in Qianyang,Fengxiang,Feng,Linyou and Long Counties were selected as monitoring points to carry out a intensified monitoring.All subjects were surveyed by comprehensive clinical physical examination and 12-lead ECG tracings,and they were diagnosed according to the Keshan disease diagnostic criteria.Ten households were selected randomly in each monitoring point(village),and self-produced wheat samples and adult subject's occipital hair samples were collected for detecting selenium levels.Results Seven hundred and forty-six cardiac cases which containing 17 cases of chronic Keshan disease were discovered in 32 medical institutions,and there were no acute and subacute type of Keshan disease patients.Five thousand seven hundred and twenty-three subjects were examined in the 13 monitoring sites,and 65 cases of Keshan disease were diagnosed which including 17 cases of slow and 48 cases of potential Keshan disease,and no acute or subacute case was found.The total detection rate was 1.14％,and the detection rate ranged from 0 to 2.86％.Hair selenium mean was 0.420 mg/kg; wheat selenium mean was 0.079 mg/kg.Conclusions The Keshan disease detection rate of Baoji City is at a low level.The selenium level of local residents has reached the level of non-endemic area.Constant detection of patient with Keshan disease means various control measures should be reinforced.The comprehensive monitoring program,such as monitoring people's in vivo and in vitro selenium level and others,should be established as soon as possible.

This article summarizes the methods of making rat cerebral ischemia models and comments the advantages and disadvantages of various methods in order to provide references for the selection of animal models in the basis and appfication research of cerebral ischemia.