Objectives To investigate the proliferation and apoptosis of smooth muscle cells(SMCs) after implantation of NiTi radioactive stents. Methods Radioactive and nonradioactive stents were implanted in abdominal aortas of 76 rabbits.The proliferation and apoptosis of SMCs were observed using immunohistochemistry and TUNEL.Results (1) Neointima areas on radioactive stents were less than those on nonradioacvtive stents at 1-month and 3-month respectively (P0 05).(2)The expressions of PCNA were lower in radioactive stent groups at different times compared with those of controls(P0.05).Conclusions (1) Radioactive stents can reduce the neointima areas on the implanted stents.(2)Radioactive stents can inhibit the proliferation of SMCs.(3)Radioactive stents promote the apoptosis of SMCs.

Objective To determine serum soluble interleukin 2 receptor level in patients with posthepatitis B liver cirrhosis.Methods Serum sIL 2R was measured using enzyme linked immunosorbent assay.Results Serum sIL 2R was significantly higher in patients with posthepatitis B cirrhosis than that in controls(P

Humans ; Liver ; injuries ; surgery

OBJECTIVE: To explore the effective of the new mechanical assistant canalith repositioning procedure (TRV-CRP) to the diagnosis and treatment of the benign paroxysmal positional vertigo (BPPV). METHOD: The data of the cases with suspected diagnosis of BPPV from April to June of 2012 checked and treated by TRV-CRP in our vestibular function checking room were collected and analyzed. All of the cases were followed up to one to three months. RESULT: Total 504 cases of suspected diagnosis of BPPV were collected. Three cases were rejected for un completed procedure. All of the 501 completed procedure cases included 162 male and 339 female with age ranging from 10 years old to 86 years old (52. 8 +/- 14 years old). 169 cases (33.73%) were positive diagnosis and 332 cases were negative diagnosis (66.27%). 135 cases enrolled only one semicircular canal (SC) account for 79.89% of all the positive diagnosis that included 17 cases of left horizontal SC, 4 cases of left superior SC, 29 cases of left posterior SC, 23 cases of right horizontal SC, 4 cases of superior SC and 58 cases of right posterior SC. 25 cases enrolled more than two SC (14.80%). 9 cases of objective BPPV (5.33%) included 5 cases of right posterior SC, 3 cases of left posterior SC and one cases of right horizontal SC. Exception of 163 cases without classic BPPV history in the 332 negative diagnosis cases, 169 cases had classic BPPV history including 14 cases treated by manual canalith repositioning procedure and 33 cases which had released from the vertigo. The rate of treatment effective by TRV-CRP was 100%. There were 20 cases returned for retreatment because their unsatisfied about the release of their symptom but proved to be negative diagnosis again in 10 cases and positive diagnosis in 10 cases, however, only 4 cases proved to be the same SC disease were considered as relapse (2.37%) and others enrolled different SC. After retreated, all cases got release without relapse. CONCLUSION TRV-CRP could diagnosis 34% of the primary diagnosis cases of BPPV. TRV-CRP had high rate of effective and lower relapse which especially fitted to patients suffered from complex BPPV or difficult to finish the manual repositioning procedure. However, due to the expensive of TRV-CRP, it is reasonable to combine TRV-CRP and manual repositioning procedure in clinical.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Benign Paroxysmal Positional Vertigo ; Child ; Female ; Humans ; Male ; Middle Aged ; Otolithic Membrane ; Physical Therapy Modalities ; Treatment Outcome ; Vertigo ; diagnosis ; therapy ; Young Adult

Objective To explore the correlation of helicobacter pylori(HP) infection in liver cirrhosis(LC) of different syndrome patterns with blood ammonia level.Methods Two hundred and seventeen LC patients were divided into Hp-positive group and Hp-negative group.The patients were classified into 6 syndrome patterns: liver-Qi stagnation,internal accumulation of water-dampness,stagnation of damp-heat,deficiency of liver and kidney yin,deficiency of spleen and kidney yang,and blood-stasis blocking collaterals.Parameters of blood ammonia level,hepatic function and blood coagulation function were observed in LC patients with different syndrome patterns.Results The Hp infection rate in 217 LC patients was 40.1%,the difference being insignificant in the patients with different syndrome patterns and hepatic function grading.The percentage was in a decreasing sequence in syndrome patterns of stagnation of damp-heat,internal accumulation of water-dampness,blood-stasis blocking collaterals,deficiency of liver and kidney yin,liver-Qi stagnation,deficiency of spleen and kidney yang.The difference of blood ammonia level was significant between Hp-positive group and Hp-negative group(P0.05).Conclusion Hp infection is an important factor of inducing the increase of blood ammonia level in LC.Blood ammonia level increases in LC patients after Hp infection,especially in patients with blood-stasis blocking collaterals.The hepatic function grading is corrected with blood ammonia level,the worse the hepatic function,the higher the blood ammonia level.

Objective To investigate the effect of hydrogen sulfide postconditioning on the systolic function of left ventricle during myocardial ischemia-reperfusion (IR) in rats. Methods Part Ⅰ Adult male SD rats weighing 200-250 g were anesthetized with pentobarbital 40 mg/kg and heparin 250 U/kg. Their hearts were excised and perfused in a Langendorff apparatus with K-H solution saturated with 95% O2-5% CO2 at 37 ℃. Forty isolated rat hearts were randomly divided into 5 groups ( n = 8 each) after 20 min of equilibration: control group (group C); IR group; sodium hydrosulfide 1,10, 100 μmol/L postconditioning group (group SP1, SP10, SP100 ).In group Cthe hearts were perfused continuously for another 100 min. In group IR, the hearts were reperfused for 60 min after 40 min ischemia induced by 10 ml/kg ST. Thomas solution. In group SP1 , SP10 and SP100 the hearts were perfused with K-H solution containing sodium hydrosulfide 1, 10, 100 μmol/L for 2 min before reperfusion.LVDP and ± dp/dtmax were recorded at the end of equilibration and reperfusion. Part Ⅱ Cardiomyocytes were isolated from the male SD rats (weighing 200-250 g) and then cultured in CO2 incubator for 4 h. Sixty-four dishes of cultured myocytes were randomly divided into 4 groups( n = 16 each): control group (group C), hypoxia/reoxygenation group (group HR), hydrogen sulfide postconditioning group (group SP) and hypoxia postconditioning group (group HP). Group C were cultured continuously for 2 h. Group HR, SP and HP were exposed to 1 h hypoxia (95%N2-5%CO2 ) followed by 1 h reoxygenation. In group SP 10 μmol/L sodium hydrosulfide was added and the myocytes were then incubated for 2 min before reoxygenation. In group HP the cultured myocytes were expased to 3 min reoxygenation followed by 3 min hypoxia for 3 times before the 1 h reoxygenation. Mitochondrial membrane potential and F-actin expression were determined. Results Part Ⅰ Compared with group C, LVDP and ± dp/dtmax were significantly decreased at the end of reperfusion in group IR (P ＜ 0.05), while no significant difference was found in group SP1 , SP10 and SP100(P ＞0.05). Compared with group IR, LVDP and ± dp/dtmax were significantly increased in group SP ( P ＜ 0.05). There was no significant difference in LVDP and ± dp/dtmax among group SP1, SP10 and SP100(P ＞0.05). Part H Compared with group C, the mitochondrial membrane potential was significantly decreased in group HR and HP, and the expression of F-actin was significantly up-regulated in group HR, SP and HP ( P ＜ 0.05). Compared with group HR, the mitochondrial membrane potential was significantly increased and the expression of F-actin up-regulated in group SP and HP ( P ＜ 0.05 ). There were no significant difference in the mitochondrial membrane potential and expression of F-actin between group SP and HP ( P ＞0.05).Conclusion Hydrogen sulfide postconditioning can improve left ventricular systolic function during IR in rats by stabilizing mitochondrial membrane potential and promoting aggregation of F-actin.

Ubiquitous chromatin opening element ( UCOE ) , composed of the promoters of human housekeeping genes, prevents transgene from silencing and produces consistent, stable and high-level gene expression irrespec-tive of the chromosomal integration site. The research studied the influence of different UCOE element parts on antibody expression in CHO cells. UCOE 1. 5 kb from chromobox homolog 3 ( CBX3 ) , UCOE 2. 5 kb from the heterogeneous ribonucleoprotein A2/B1 ( HNRPA2 B1 ) and the whole UCOE 4. 0 kb were inserted into the anti-body light and heavy chain vectors, respectively, and transfected into CHO cells using antibiotics-Zeocin and Blasticidin for pressure selection. Four groups of monoclonal cells were harvested and antibody expression of each group was detected. The monoclonal cells with UCOE 1. 5 kb and UCOE 2. 5 kb increased 1. 5 to 2-fold in the level of antibody expression, wheareas, monoclonal cells with UCOE 4. 0 kb increased 3 to 4-fold. The enhance-ment of two housekeeping promoter genes on antibody expression could stack up.

Objective To measure the setup errors and organ movements of patients with esophagus carcinoma during radiotherapy and find a reasonable margin from the clinic target volume (CTV) to the planning target volume (PTV). Methods (1) Set-up veri cation: Forty-two cases of untreated esophageal cancer were enrolled into this study. The physicist firstly made the planning according to the doctor requests and ensured the best distribution at the target. Thereafter, the 0° and 90° digitally reconstructed radiograph (DRR) was transmitted to the iView GT workshop. Meanwhile, two copies of cross-cut electronic portal image (EPI) were required before radiotherapy. Two doctors confirmed the variance of the osteal mark from the EPI and DRR,and output a 3D direction (left to right, superior to inferior, anterior to posterior) of the setup errors through the iView GT software. (2)Breathing motion:Ten cases of untreated esophageal cancer were enrolled into this study.Three distinct breathing levels were deflned: FB (free breathing), EBH (expiration with breath-held) and IBH (inspiration with breath-held). We gave the treatment planning in FB, then by moving the isocenter to EBH and IBH, we recalculated the dose distribution without changing the field angle, shape and weighing (Mus). Displacements were analyzed at four points (anterior, posterior, right lateral and left lateral) and five levels of target (upper, quarter, isocenter, three-quarter and lower). Results (1) The systematic setup errors were -0.23 cm, -0.02 cm and -0.06 cm, and the random errors were 0.44 cm, 0.45 cm and 0.44 cm at the direction of left to right(LR), superior to inferior (SI), anterior to posterior(AP), respectively. (2) The organ movements were 0.3 cm, 0.6cm and 0.3cm at the LR, SI, AP, respectively. Conclusions As an alternative, the root-sum-of-squares of set-up error and organ motion are suggested by σtot=√ (σITV2+σSM2). The CTV to PTV margins are 0.8cm left to right, 0.78cm superior to inferior, 0.5cm anterior to posterior.

Adolescent ; Adult ; Deafness ; diagnosis ; etiology ; psychology ; Diagnostic Errors ; Female ; Hearing Loss, Sudden ; diagnosis ; Humans ; Male