Induced pluripotent stem cells (iPSC) technology play an important role in studying diseases in vitro. iPSC disease model was based on the iPSC technology, and has achieved important results in many diseases. For those spe-cific genetic diseases that are relatively easy to simulate, iPSC disease model is especially useful. This technology can direct-ly obtained required material from patients, which is free from ethical constraints and rich in cell sources . iPSC disease model as widely used in studying disease mechanism, drug screening, safety inspection, cell therapy, and so on. It is expect-ed to be used in gene correction, gene repair and to obtain the required target cells for the treatment. Cells modification caused by reprogram, lacking of optimum experimental scheme for cell differentiation and difference in genetic backgrounde limit the application of iPSC disease model. More advanced nonintegrated programming technology, improvement of culture conditions, stricter quality control and setting up the standard for iPSC disease model will help to solve these problems.

Objective To investigate the bacterial distribution and resistance in orthopedic patients with wound infections in the hospital in 2014 .Methods The bacteria identification and the antimicrobial susceptibility test were conducted by VITEK‐2 compact automatic system .Results A total of 864 pathogenic strains were collected ,with Gram‐positive bacteria 451 strains (52 .2% ) , Gram‐negative bacteria 398 strains(46 .1% ) .The first major pathogens of Gram‐positive bacteria were Staphylococcus aureus(n=233 ,27% );The top three pathogens of Gram‐negative bacteria were Pseudomonas aeruginosa(n=94 ,10 .9% ) ,Enterobacter cloacae (n=63 ,7 .3% ) ,Acinetobacter baumannii(n=58 ,6 .7% ) .All the Staphylococcus aureus isolates were susceptible to vancomycin , tigecycline ,nitrofuratoin ,quinupristin/dalfopristin ,linezolid .The resistant rates of Acinetobacter baumannii were higher than 50%to multiple antibiotics .Conclusion Staphylococcus aureus were predominant pathogens in orthopedic patients with wound infec‐tions in our hospital .Meantime ,Pseudomonas aeruginosa and Enterobacter cloacae were the prime pathogens in the Gram‐negative bacteria .The drug‐resistance situation is still severe ,and more effective measures should be taken to control the dissemination and growth of resistant strains .

Objective To evaluate the effect of polysaccharide nucleic acid fraction of bacillus Calmette-Guerin (BCG-PSN) on peripheral blood CD4+CD25+Foxp3+ regulatory T (Treg) cells in patients with condyloma acuminatum (CA).Methods Forty-two patients with first onset of CA were randomly assigned to receive either injection of BCG-PSN (0.35 mg every other day for 3 months) after fulguration (combination group,26 patients),or fulguration only (fulguration group,16 patients).Venous blood samples were obtained from all the patients at the initial visit and three months after the beginning of treatment,as well as from 30 healthy checkup examinees.The percentage of peripheral Treg cells in CD4+ T lymphocytes was determined by flow cytometry.The recurrence of CA was evaluated during the three months after the beginning of treatment.Results The percentage of peripheral Treg cells in CD4+ T lymphocytes was significantly higher in patients with CA than in the controls (8.31％ ± 1.24％ vs.5.15％ ± 0.72％,P ＜ 0.01),and in patients with clinical recurrence of CA than in those without (9.34％ ± 0.72％ vs.7.45％ ± 0.85％,P ＜ 0.01).The recurrence rate was significantly lower in the combination group than in the fulguration group (30.77％ vs.68.75％,P ＜ 0.05).After three months of treatment,the combination group showed lower percentage of Treg cells in CD4+ T cells compared with the fulguration group (5.87％ ± 1.05％ vs.6.60％ ± 0.75％,P ＜ 0.05).Conclusions The percentage of Treg cells has a close relationship with the progression of CA,i.e.,the higher the percentage,the more frequent the relapse.BCG-PSN may enhance the antiviral immune response in patients with CA and improve their prognosis by reducing the number of Treg cells.

Objective:Occult breast cancer (OBC) accounts for 0.3%-1.0%of all breast cancers. Because of the rarity of this dis-ease, its treatment and prognosis remain unclear. Our study evaluated the treatment outcomes and prognostic factors associated with OBC. Methods:A total of 82 patients diagnosed with OBC based on available criteria were treated at the Cancer Hospital of Chinese Academy of Medical Sciences, Beijing, China, between January 1968 and June 2014. Except for 16 patients who were treated by needle biopsy or excisional biopsy only and were subsequently excluded, all of the cases reported were included in the study. Of the remaining 66 patients, one was male. Patient data, tumor characteristics, and treatment and outcome variables were evaluated. Overall survival (OS) and disease-free survival (DFS) were analyzed. A unicentric retrospective review of 66 patients with OBC was performed. Re-sults:The median follow-up was 75.5 months (7.0-328.0). No significant differences in OS and DFS were observed between patients who underwent mastectomy plus axillary lymph node dissection (Mast+ALND) and those who underwent breast conservation surgery (P>0.05). Univariate analysis revealed that nodal status is a significant prognosis factor of DFS (P=0.031). Conclusion:No significant difference in treatment outcomes between mastectomy+ALND and breast conservation surgery was observed. Nodal status may be an independent predictor of poor outcomes in OBC patients.

Objective:To study the effects of different molecular weight of collagen polypeptides from Apostichopus japonicus (A1:6 000U

10000 u,SP2:6 000 u0.05),the melanogenesis and tyrosinase activity were inhibited remarkably(P

Objective To investigate the effects of L-Arginine(L-Arg) on microcirculation perfusion after banked-blood transfusion in rabbits with hypovolemia.Methods Thirty healthy male New Zealand white rabbits weighing 2.0-2.5 kg were randomly divided into 3 groups (n =10 each): groups Ⅰ-Ⅲ.Hypovolemia was induced by blood letting (20％ of blood volume) and the equal volume of banked-blood was transfused 30 min later in groups Ⅰ and Ⅲ.25％ L-Arg 300 mg/kg was injected iv 5 min before blood letting in group Ⅲ,and the equal volume of normal saline was injected in group Ⅰ.Group Ⅱ only received 25％ L-Arg 300 mg/kg.MAP,CVP and tip perfusion index (TPI) were recorded at before (T0) and after blood letting (T1),end of banked-blood transfusion (T2),1 h ( T3 ) and 2 h (T4) after banked- blood transfusion,and blood samples were taken for determination of plasma lactate and nitric oxide (NO) concentrations.Results TPI was higher at T2-T4,plasma lactate concentration lower at T1 -T4 and plasma NO concentration lower at T3,T4 in groups Ⅱ and Ⅲ than in group Ⅰ ( P ＜0.05).There was no significant difference in MAP between groups Ⅱ,Ⅲ and group Ⅰ ( P ＞ 0.05).MAP was lower at T1 in group Ⅲ than in group Ⅱ (P ＜ 0.05).There was no significant difference in CVP among the 3 groups( P ＞ 0.05).Conclusion Pretreatment with L-Arg can increase microcirculation perfusion,and has no effect on hemodynamics in rabbits with hypovolemia after banked-blood transfusion.

Objective Improve understanding the clinical features of bladder varices with portal hypertension. Methods A 63-year-old male manifested seven episodes of painless gross hematuria and had a 9-year history of liver cirrhosis. Physical examination was unremarkable. There was thrombocytopenia of 56 × 109/L. Ultrasound showed splenomegaly. Cystoscopy revealed a 3. 0 cm × 5.0 cm sized hemangiomatous on the left lateral and anterior wall of the bladder. Computed tomography angiography revealed the vesical varicose veins flowing into the inferior mesenteric vein and then to the splenic vein. Results The patient was diagnosed vesical varices, liver cirrhosis and portal hypertension. Performed perivesical devascularization and in ultrasound one month after the operation the variees disappears. Conclusion Vesical varices can occur in liver cirrhosis and portal hypertension patients without history of abdominal and pelvic operation, and can be treated by perivesical devascularization.

Adult ; Cardiomyopathy, Hypertrophic ; pathology ; Female ; Heart Ventricles ; pathology ; Humans