ObjectiveTo investigate the changes in the expression of transforming growth factor beta-1 (TGF-β1) during differentiation of pulmonary microvascular endothelial ceils (PMVECs) into smooth muscle cells in rats with hepato-pulmonary syndrome (HPS).MethodsPrimary PMVECs were harvested from healthy adult SD rats of both sexes aged 3-4 months and inoculated in low-glucose DMEM culture medium (1(6/cm2 ) and randomly divided into 2 groups ( n =24 dishes each):control group ( group C) and HPS group.HPS was produced by chronic ligation of common bile duct.In group C serum obtained from normal rats was added to PMVECs,while in HPS group serum obtained from rats with HPS was added.The final concentration of serum was 10％.After being incubated for 24,48 and 72 h,the expression of SM-MHC,SM-α-actin and calponin protein and TGF-β1 mRNA and protein in PMVECs was determined by RT-PCR and Western blot analysis.ResultsThe expression of SMMHC,SM-α-actin and calponin protein.was positive in HPS group whereas the expression of SM-α-actin and calponin protein was negative and the expression of SM-MHC protein was barely detectable in group C.The expression of SM-MHC,TGF-β1 mRNA and protein was significantly higher in HPS group than in group C.The expression of SM-MHC,SM-α-actin and calponin protein and TGF-β1 mRNA and protein was increasing with duration of incubation from T1 to T3 in group HPS.ConclusionTGF-β1 plays an important role in the myogenic differentiation of PMVECs in rats with HPS.

Objective To study the feasibility and curative effect of laparoscopic radical resection of rectal carcinoma. Methods Twenty-eight cases undergoing laparoscopic radical resection (laparoscopic group) and 26 cases undergoing open radical resection (open group) were enrolled from January 2004 to December 2007. The following parameters: operation-related situations, postoperative recovery,result of radical resection, and postoperative outcome were compared between the two groups. Results The blood loss during operation in laparoscopic group was less than that in open group [(148.0±26.5) ml vs (396.0±79.6) ml, P<0.01]. The gastrointestinal tract and urination function in laparoseopic group recovered faster than those in open group[the time of diet in taking was (2.8±0.1) d vs (3.9±0.3) d,the time of detaining urethral catheter was(4.2±0.2) d vs (6.0±0.8) d] (P<0.05). The hospital stay was shorter in laparoscopic group than that in open group [(9.8±1.1) d vs(13.2±2.8) d, P<0.01]. The operation time, the number of cleared lymph nodes and complications of laparoscopic between the two groups were no significant difference (P>0.05). There was no significant difference in local recurrent and beyond metastases rates between the two groups. Conclusion Laparoscopic radical resection of rectal carcinoma parallels with open surgery is in safety and effectiveness, it has less traumatic and blood loss and faster in patients recovery.

Objective To investigate the regularity of variation in number of emergency patients visiting doctors within each 24 h during holidays and festival days,so as to provide a scientific basis for hospital administration and the rational allocation of human resources.Methods Based on the hospital's statistical data of emergency patients visiting doctors during winters from December 2010 to February 2014,a retrospective analysis was carried out for the number and the visiting time of emergency patients on holidays (weekends,the minor long holiday of 3 days for New Year and the major long holiday of 7 days for spring festival) and on general working days (Monday to Friday),respectively.The variation in number of patients and peak time of visiting doctors were analyzed by using circular distribution method,and compared the differences in the number of emergency patients visiting doctors and peak time period between holidays and working days.Results Most of emergency patient visitors were 50-79 years old males; the number of emergency patients on holidays was significantly higher than that on general working days,especially during the seven-day spring festival (P ＜ 0.01),while the number on New Year' s day was similar to that on weekends; peak time for emergency patients' visiting doctors was from 13:05 to 0:28 during general working days.On the contrary,the peak time occurred earlier at 10:05 until 21:05 during the holidays if the hospital offers half-day outpatient service,and in the absence of outpatient service,the peak time emerged further earlier at 9:16 until 21:26 during holidays.Conclusions The ages,number and the peak time of emergency patients visiting doctors on holidays are different from those on the general working days,so medical staff on duty should be arranged reasonably to follow this regularity.

Objective To explore the incidence, causes and management of peripheral vascular complications after cardiac catheterization Methods Cardiac catheter data and clinical data of 1?745 patients were reviewed Results One hundred and two patients (5 9%) had peripheral vascular complications, including local hematoma (77, 4 4%), pseudoaneurysm (4, 0 23%), arteriovenous fistula(2, 0 11%), femoral arterial thrombosis(2, 0 11%), femoral venous thrombosis (3, 0 17%), pulmonary thromboembolism (2, 0 11%), external hemorrhage(13, 0 74%) The mortality was 0 06% (1/1745), and the surgery repair rates 0 11% ( 2/1?745 ) Conclusion Peripheral vascular complications of cardiac catheterization is not so rare, and has a good prognosis after conservative management

Objective:To study the phenotypes of T cell in patients with Hashimoto thyrioditis (HT) and to analyze its relationship with the impairment of follicles, so as to provide evidence for clinical diagnosis and treatment. Methods: Totally 136 HT specimens were obtained by fine needle aspiration biopsy (FNAB) and were divided morphologically(L, P, O type). The serum parameters (TPOAb, TGAb, TSH) were tested, and 20 cases with nontoxic goiter were taken as control. Immuno-histochemical assay was performed with 60 specimens and FCM (Flow cytometry ) was used to study 23 specimens. The T cell infiltration and the distribution of CD3+ . CD4+ . and CD8+ T cells were compared between all types of HT tissues. The correlationship between the atrophic degree of follicle with T lymphocytes infiltration and phenotype was analyzed. Results: It was found that L type (n = 58) and P type (n = 28) had more serious follicle atrophy than that of O type (n = 20) (P

The publication of research papers is an important mark of achievements in scientific research. It is an index for checking the completion of various projects as well as a form of project completion. In order to better fulfill the tasks in scientific research, to enable more research projects to become bid winners, to turn out more quality papers, to produce outstanding results, and to further strengthen management and supervision of scientific research, the hospital the authors work with formulated at the end of 1999 "quantitative economic management of research quotas", which was put into effect at the beginning of 2000. An effect analysis of the implementation of the measure in the past three years showed that the desired results were basically achieved, academic advancement and personnel growth were greatly promoted, and the publication of research papers became a key index for evaluating the timely completion of research projects. In future the hospital plans to further improve the policy for rewarding writers of research papers and encourage quality academic papers to be published in key international journals.

ObjectiveTo analyze the protective effects of heat-shock response on the retinae of the rats after retinal ischemic reperfusion injury. MethodTwenty Wistar rats (20 eyes) were divided into 4 groups: intracameral perfusion group (group P), intracameral perfusion after quercetin injection group (group P+Q), intracameral perfusion after heat shock group (group P+H), and intracameral perfusion after quercetin injection and heat shock group (group P+Q+H). According to the standard program established by International Society for Clinical Visual Electrophysiology, we recorded the results of the dark-adapted electroretinogram (D-ERG),oscillatory potentials (OPs),and light-adapted ERG (L-ERG) of the rats with intraocular hypertension after induced by heat shock response. The expressions of HSP 70 of the rats in all groups were observed by Western blotting.ResultsThe expression of HSP 70 of the rats in group P+H was the highest in all groups, but the expressions of HSP70 in group P+Q and P+Q+H were inhibited significantly. The amplitudes of a and b wave of ERG and O 2 wave of OPs decreased, and the delitescence of them were delayed significantly in rats after intracameral perfusion. The amplitude of b wave of D-ERG and O 2 wave of OPs in group P+H were higher than which in group P. Zero hour after perfusion, the amplitudes of all waves in group P+H increased significantly (P

RAPD analysis of eight soy sauce strains isolated from commercial soy sauce koji was done with random primers,using Aspergillus oryzae AS3.951 and Aspergillus sojae AS3.495 as controls.Six appropriate primers(Primer1,Primer5,Primer6,Primer7,Primer8,Primer9)for RAPD-PCR were screened from nine random primers,and repetitive experiments demonstrated that their RAPD-PCR polymorphic patterns were stable.There were usually 4～8 bands in their RADP-PCR patterns,where the number of the main bands was 1～4 and the secondary bands were abundant.The phylogenetic tree of these strains was reconstructed according to their RAPD-PCR patterns,and it basically corresponded to traditional morphological taxology,demonstrating that the application of RAPD molecular marker in the phylogenetic analysis of soy sauce strains was feasible.

Objective:To analyze the current status of medical students′ humanity education satisfaction rate and present situation of humanity quality and thus provide evidence to better practice of humanity education. Meth-ods:According to the random stratified cluster sampling method, the researchers selected 1146 medical students from Harbin Medical University and then investigated the objects′ humanity education satisfaction rate and general humanity situation. The data was analyzed using χ2 test in SPSS 17. 0. Results:①Satisfaction status of humanity education:the students′satisfaction to teachers′humanity quality, effect of course and library resources were low.② The present situation of humanity quality:80 . 2% of the medical students thought it was necessary to strengthen the medical students′humanity education;18. 1% of the medical students remembered the medical student oath, and there existed significant differences between different specialties;11 . 9% of the medical students could clear connotation of the humanistic concept, and there were significant differences between various grades;24. 4% and 14 . 5% of the medical students couldn′t clear the humanistic attribute of Marxist political theory course and moral course respectively; rural students′ humanity quality was statistically lower than the urban ones. Conclusion:Through optimizing the structure of humanity courses, strengthening the construction of teaching staff and attaching great importance of the library to humanity education effect, so as to improve medical students′ satisfaction of hu-manity education. The government should increase investment in rural education to narrow the gap of basic humani-ty quality education between urban and rural.

Objective To explore the efficacy and safety of improved covered metallic stents for proximal malignant esophageal strictures.Methods A total of 56 patients with proximal malignant esophageal strictures were treated with improved covered metallic stents whose diameter was 14 mm or 16 mm at Shanxi Province Tumor Hospital from Feburary 2013 to August 2014.Swallowing condition, physical and life quality were compared before and after surgery and analyzed.At the same time, side effects and complications were recorded during and after surgery.Results All 56 patients were treated successfully with improved covered metallic stents, no complications related with stents occurred after surgery.Swallowing conditions were improved after surgery, there were 45 patients with obvious improvement, 10 patients with better improvement and 1 patient's stent taken out due to stent intolerance.Remission rate of swallowing conditions was 98.2％ (55/56).Two weeks after surgery, Stooler of swallowing conditions obviously improved (t =7.05, P ＜ 0.05), physical conditions (ZPS) also improved (t =22.49, P ＜ 0.05), but there was no significant difference in life quality (Kamofsky scores) (t =1.07, P ＞ 0.05).During 90 days of follow-up there was no hemorrhage or perforation.Conclusion The application of improved covered metallic stents for proximal malignant esophageal strictures is safe and effective.