Objective To study the expression of three survivin splicing variants in gastric cancer and normal gastric mucosa and to evaluate relationship among the survivin variants' expression and proliferation, apoptosis in gastric cancer. Methods Real time quantitative RT-PCR was used to analyze survivin variants expression in 77 paired tumors and normal gastric mucosa in frozen samples at the mRNA level. The cell proliferation and apoptosis were measured by Ki-67 immunoln's to chemical analysis and TUNEL method in paraffin-embedded block of same cases, respectively. Results The sarvivin splicing variants were remarkably up-regulated in gastic cancers compared with those in normal tissues (P

Objective To observe the effects of the Ossatron high-energy shock waves on bone nonunion and delayed union.Methods Between October 2004 and October 2005,18 patients with nonunion and four patients with delayed union were treated with high-energy extracorporeal shock wave therapy(Ossatron,HMT Co., Swiss).Facture lines were located with C-arm X-ray before treatment.Parameters of shock waves were decided according to fracture sites.Patients with unstable fixation received plaster or bracing for 6 to 8 weeks after treatment. After therapy,follow-up radiography was performed at 6 and 12 weeks and monthly afterwards until the fracture united. Results The mean follow-up was 6.7 months(range,3 to 12 months).There were no complications except local petechial hemorrhage and local swelling in 10 patients.Thirteen patients(59.1%)got bony union,including 12 patients(66.7% )with stable internal fixation,and the average healing time was 4.3 months(range,6 weeks to 6 months).Nine fractures(40.9%)still suffered nonunion.Conclusion High-energy shock waves are a good alternative therapy for nonunion and delayed union,with obvious advantages of being non-invasive and safe.

Purpose To evaluate renal function recovery state with color Doppler ultrasound before and after ultrasonic pneumatic ballistic lithotripsy under percutaneous nephrolithotomy. Materials and Methods 79 patients with 81 kidneys with upper urinary tract stones underwent ultrasonic pneumatic ballistic lithotripsy under percutaneous nephrolithotomy, renal parenchymal thickness, renal collecting system separation degree and renal arterial resistance index (RI) were measured with color Doppler ultrasound before and after the operation, subjects were divided into renal dysfunction group (both preoperative and postoperative GFR <20 ml/min, the difference <20 ml/min), renal function significantly improved group (postoperative GFR greater than preoperative, the difference>20 ml/min), renal function significantly impaired group (postoperative GFR less than preoperative GFR, the difference>20 ml/min) and no significant improvement group (both preoperative and postoperative GFR were >20 ml/min, the difference <20 ml/min) according to the preoperative and postoperative glomerular filtration rate (GFR) difference. Renal parenchymal thickness, renal collecting system separation degree and renal artery RI of each group were compared, and their correlation with GFR was analyzed. Results Statistically significant differences (F=129.750, 110.953, 45.411, 18.530, 18.904, 12.565, 27.291, 24.263; P<0.05) were detected in all the four groups between preoperative and postoperative renal parenchymal thickness, renal collecting system separation degree, interlobar renal artery (IRA) and main renal artery (MRA) RI. There was a significant positive correlation (r=0.916, P<0.05) between renal parenchymal thickness and pre-and post-lithotripsy GFR, and a significant negative correlation (r=-0.886,-0.903,-0.923;P<0.05) between renal collecting system separation degree, IRA and MRA RI with pre-and post-lithotripsy GFR. The sensitivity and specificity were 93.4%and 97.3%, respectively when taking renal parenchymal thickness<0.32 cm, renal collecting system separation degree >4.27 cm, IRA RI and MRA RI>0.8 as diagnostic standard for kidney dysfunction; and the sensitivity and specificity were 87.4% and 85.7%respectively when taking IRA RI<0.72 as diagnostic standard for renal function improvement. Conclusion Renal parenchymal thickness <0.32 cm, renal collecting system separation degree >4.27 cm, IRA and MRA RI >0.8, and IRA RI <0.72 can be regarded as clinical reference standard for renal function prognosis of kidney dysfunction and hypo-functional before conducting ultrasonic pneumatic ballistic lithotripsy under percutaneous nephrolithotomy.

Objective To investigate CT findings in gastric stromal tumors(GST).Methods Both plain and enhanced spiral CT findings in 46 cases with gastric stromal tumor were retrospectively analyzed.In all patients,diagnosis was confirmed with immunohistochemical markers.CT features were retrospectively studied and summarized.Statistical analysis of the shape,growth pattern,necrosis and enhancement patterns was performed with X2 test in 43 cases with single gastric stromal tumor.Results Of the 46 GST patients,43 patients had single GST and multiple GST was detected in 3 cases.In the 43 cases with single GST,tumors were found in the gastric body in 24 cases,gastric fundus in 16 cases,and in the gastric antrum in 3 cases.GST mostly grow along the vertical plane of gastric wall,with a large size but local attachment.The tumor size was less than 5era in diameter in 14 cases.Of them,ten cases had a regular shape,10 cases showed homogeneous enhancement,and 4 cases exhibited central necrosis,7 tumors showed intra-luminal growth and 5 tumors showed extra-luminal growth,while the other 2 cases involved both intra and extra lumina.Twenty-nine cases had tumors larger than 5cm in diameter.Of them,24 cases had irregular shape,27 cases showed inhomogeneous enhancement,24 cases had central necrosis,5 tumors showed intra-luminal growth and 9 tumors showed extra-luminal growth,while 15 cases involved both intra and extra lumina.The tumor size of GST closely was related to the shape,growth pattern,necrosis and the inhomogeneous enhancement patterns of the GST(P<0.05).The enhancement of the tumor was more intense in venous phase and delayed phase.Five cases showed septal enhancement,4 tumors exhibited marked enhancement in arterial phase with up to 60 HU.Conclusions CT can precisely display the location,shape and size of gastric stromal tumors.It is very helpful to provide useful information for early diagnosis and evaluation.

BACKGROUND:Acellular dermal matrix possesses good flexibility and simple trimming.The intracutaneous or subcutaneous injection of acellular dermal matrix powder has fibroblast migration and collagen deposition.It has been widely used in plastic and reconstructive surgery.OBJECTIVE:To explore the feasibility of reconstructed acellular dermal matrix as a scaffold for chondrocyte implantation.DESIGN,TIME AND SETTING:Comparative observation.The study was performed at the Peking University Medical Department and Beijing Jishuitan Hospital between August 2003 and February 2007.MATERIALS:Neonatal calf dermis was provided by Beijing Yuanheng Shengma Biology Technology Research Institute.A total of 24 healthy adult SD rats,weighing 250 g,regardless of gender,and 36 New Zealand rabbits,aged 3 months,were selected.METHODS:①Calf full-thickness back skin was incubated with cell free buffer or ABS/AES for decellularization,followed by surface modification using growth factors.②Three rectangle skin flaps at two sides of the spinal cord of rats were made,and implanted with acellular dermal matrix.The implants were harvested at 2,6,and 12 weeks postoperatively.③The rabbits were divided into experimental and control groups.The cartilage was obtained from the left articular facet to isolate chondrocytes.The chondrocytes were seeded on the acellular dermal matrix.The cartilage defect was made on the right hind limb of experimentalrabbits,and implanted with acellular dermal matrix containing autoiogous chondrocytes.Biogel wass dropped on the surface of carrier.In the control group,the cartilage defect was made on the right hind limb of rabbits and the wound was sutured.Two rabbits from control group and 5 from experimental group were selected respectively at 4,12 and 24 weeks postoperatively.MAIN OUTCOME MEASURES:Cross-linking effect comparison;repair effect of rabbit bone defects.RESULTS:①The acellular dermal matrix cross-linked by glutaraldehyde demonstrated an obvious inflammatory reaction with tissue bleeding and necrosis.Conversely,ADM treated with water-soluble cross-linking agent caused displayed good histocompatibility.②The cartilage defects were repaired completely;the attached cells survived and proliferated and the acellular dermal matrix was degraded after 24 weeks of surgery.CONCLUSION:The acellular dermal matrix decellularized with cell free buffer,digested with digestive buffer,Cross-linked by water-soluble cross-linking agent,and further decorated with growth factor exhibited good histocompatibility,and was suitable forcell attachment and growth.The acellular dermal matrix scaffold almost degrades in the rabbits,with no rejection,and the bone defects were repaired after 24 weeks.

Objective To investigate the processing characteristics of locative prepositions in patients with Chinese aphasia,and to provide the theoretical evidence for the rehabilitation of aphasia.Methods Twenty aphasic patients caused by left-hemisphere stroke and twenty matched normal controls were studied.Using the locative prepo- sition repeating task(single words,locative preposition phrases and words in sentences),the comprehension task, filling-gap task,the visual-spatial function task and the short-term memory task,we compared the performance be- tween these two groups.Results The aphasic patients had more difficulty in repeating locative prepositions in sen- tences,in comprehension task and filling-gap task,their short term memory was impaired.Both groups did well in re- peating single words and phrases.Conclusion The processing of locative prepositions was impaired in Chinese aphasics.The repetition of locative prepositions was more difficult than that of phrases and single words.The preposi- tions were often omitted.It might be due to the impairment of their short-term memory,or it might have something to do with role they played in the syntactic structure.The latter might also impact the comprehension and filling-gap score.We should make plans before rehabilitation therapy.

Objective To assess the effectiveness and safety of radiofrequency catheter ablation for idiopathic ventricular arrhythmia in patients with idiopathic ventricular arrhythmia after radiofrequency catheter ablation treated in the First Affiliated Hospital of Xi’an Jiaotong University based on the follow-up and retrospective analysis.Methods We retrospectively analyzed the clinical data of 63 patients with idiopathic ventricular arrhythmia who underwent radiofrequency catheter ablation during January 2008 and March 2014 in the First Affiliated Hospital of Xi’an Jiaotong University.In the follow-up,Holter moniterings were reviewed to evaluate ventricular arrhythmia and echocardiography to assess the ejection fractions and left ventricular end-diastolic diameters.Results The immediate success rate of catheter ablation for the treatment of idiopathic ventricular arrhythmia was 89.29% and the long-term success was 82.14%.The ejection fractions and left ventricular end-diastolic diameters were not obviously improved after radiofrequency ablation (P > 0.05 ). The ventricular premature contractions were significantly reduced after radiofrequency ablation (P <0.05).In postoperative care, one case was found with ruptured sinus valsalva tumor and another patient was found with the complication of hematoma in femoral artery puncture.Conclusion Radiofrequency ablation for idiopathic ventricular arrhythmia is safe and effective.

Quality education and innovative ability cultivation of students are a new position in higher education.Exploring exper- iment was applied in teaching of microbiological experiment for enhancing integrative diathesis and cultivating innovative spirit and ability of students.The practice has been proved that learning fervor of students was increased adequately.Unaided operation abili- ty,integrative analysis ability and innovative idea were enhanced,too.Accordingly,teaching quality of microbiological experiment was improved.

Objective:To investigate the role of coupler perfusion in transrectal ultrasound in the diagnosis of preoperative T staging of rectal cancer.Methods:A retrospective analysis of the preoperative clinical data of 132 patients with rectal cancer in the People′s Hospital of Inner Mongolia Autonomous Region from June 2015 to November 2020. According to whether or not the patients agreed to coupler perfusion before ultrasound examination, they were divided into 2 groups, namely the perfusion group 69 cases and the non-perfusion group of 63 cases, with postoperative pathology as the gold standard, and compared with magnetic resonance imaging(MRI) to evaluate the accuracy of the 2 groups and MRI in the T staging of rectal cancer.Results:The total coincidence rates of the coupling agent perfusion group, non-perfusion group and MRI group for the diagnosis of rectal cancer T staging were 89.9%, 76.2% and 87.9%, respectively, and the difference among the three methods was statistically significant (χ 2=6.096, P=0.047). The diagnostic sensitivity of the coupling agent perfusion group for T1 stage was 96.0%, which was higher than 61.5% of the non-perfusion group and 92.3% of the MRI ( P=0.010). The specificity of the perfusion group for the diagnosis of T2 stage was 95.7%, higher than the non-perfusion group and MRI ( P=0.037), the positive predictive value of the perfusion group for T2 stage was 90.9%, which was higher than the non-perfusion group and MRI ( P=0.035). The diagnostic accuracy of the perfusion group for T2 stage was 94.2%, higher than the non-perfusion group and MRI (χ 2=7.070, P=0.029). There were no statistically significant differences in diagnostic sensitivity, specificity, positive predictive value, negative predictive value and accuracy among the perfusion group and the non-perfusion group and the MRI for T3 and T4 (all P>0.05). Conclusions:Coupled-agent perfusion makes it convenient and fast for intracavity ultrasound to diagnose T staging of rectal cancer, and the diagnostic efficiency is comparable to MRI. In particular, it can be used as a highly reliable imaging method for T1 and T2 rectal cancer.

Objective: To observe the ocular surface function changes of dry eye patients with seborrheic dermatitis and discuss the significance of seborrheic dermatitis in ocular surface damage. Methods: A cohort study was performed.Forty-nine patients (49 eyes) who were initial diagnosed with dry eye enrolled in General Hospital of Tianjin Medical University from October 2015 to March 2016 were divided into 2 groups, including 21 patients with seborrheic dermatitis and 28 patients without seborrheic dermatitis.Gender, age, meibomian gland dysfunction (MGD), eyelid margin scores, eyelid secretions scores, meibomian gland imaging scores, conjunctival congestion scores, ocular surface disease index (OSDI), Schirmer Ⅰtest (SⅠt), break-up time of tear film (BUT), fluorescent integral score were examined and compared.The study was followed the Declaration of Helsinki and was approved by General Hospital of Tianjin Medical University (No.IRB2015-YX-069). Written informed consent was obtained from all subjects before entering the study. Results: There were not significant differences in gender and ages (χ²=1.536, P=0.215; t=0.642, P=0.524). The rate of MGD in seborrheic dermatitis group was 57.15%, which was significantly higher than that in the non-seborheic dermatitis group (25.00%), with significan difference between the two groups (χ²=5.222, P=0.022). There were significant differences in eyelid margin scores, eyelid secretions scores, meibomian gland imaging scores, fluorescent integral scores between the two groups (Z=2.105, 3.303, 3.368, 3.036, all at P<0.05). The OSDI in the seborheic dermatitis group was 26.43±8.05, which was significantly larger than that in the non-seborheic dermatitis group (16.75±5.74); the BUT in the seborheic dermatitis group was (6.14±1.98)s, which was significantly shorter than that in the non-seborheic (8.75±1.38)s (t=4.918, 5.434; both at P<0.05). Conclusions Seborrheic dermatitis may aggravate ocular surface dysfunction in dry eye patients.