OBJECTIVETo examine the chemopreventive effect of selective cyclooxygenase-2 (COX-2) inhibitor celecoxib for Barrett's esophagus in rats.

METHODSFifty 8-week-old male Sprague Dawley rats underwent esophagojejunostomy to induce Barrett's esophagus model. Four weeks after operation the animals were given celecoxib 10 mg/(kg*d(-1))(celecoxib group), or saline 1 ml (control group). Another 10 rats were sham operation group. All animals were sacrificed at 20 week after surgery. The degree of inflammation, Barrett's esophagus, adenocarcinoma, COX-2 expression and PGE(2) of animals were assessed.

RESULTAmong 60 rats, 6 rats died in celecoxib group, 8 rats died in control group, 1 rat died in sham operation group, and 45 (75%) rats completed the study. The incidence of mild, moderate and severe degree esophageal inflammation in celecoxib group and control group was 14/19(73.68%), 4/19(21.05%), 1/19(5.26%); 4/17(23.53%), 5/17(29.41%), 8/17(47.06%)(P<0.05), respectively. The incidence of Barrett's esophagus was 7/19(36.84%), 13/17(76.47%) in two group respectively(P<0.05); The incidence of Barrett's esophagus with dysplasia was 2/19(10.53%), 8/17(47.06%)(P<0.05), respectively. The expression of COX-2 was 1/7(14.29%), 10/13(76.92%)(P<0.05) in two groups. PGE2 content was significantly lower in the celecoxib group than that in control group(P<0.001). No esophageal pathological changes were found in sham operation group.

CONCLUSIONSelective COX-2 inhibitors celecoxib can inhibit inflammations, development of Barrett's esophagus and esophagus adenocarcinoma.

Animals ; Barrett Esophagus ; metabolism ; prevention & control ; Celecoxib ; Cyclooxygenase 2 ; metabolism ; Cyclooxygenase 2 Inhibitors ; therapeutic use ; Dinoprostone ; metabolism ; Male ; Pyrazoles ; therapeutic use ; Rats ; Rats, Sprague-Dawley ; Sulfonamides ; therapeutic use

OBJECTIVETo establish animal models of reflux esophagitis in rats.

METHODSSeventy male Sprague Dawley rats aged 8 weeks were randomly divided into 4 groups: in Group A (n=20) esophagojejunostomy was performed to induce a gastro-jejuno-esophageal reflux; in Group B (n=20) esophagoduodenostomy was performed to induce a gastro-duodeno-esophageal reflux; in Group C (n=20) total gastrectomy plus esophagojejunostomy was performed to induce a jejuno-esophageal reflux; in Group D (n=10) only was performed sham operation (control).

RESULTAmong 70 rats, 6 died in Group A, 7 died in Group B, 6 died in Group C, and 72.9 %(51/70) animals were completed in the study. After 12 weeks the incidence of esophageal inflammation was 100.0%; in Groups A, B and C erosion occurred in 11/14 (78.6%), 10/13 (76.9%), 3/14 (21.4%) of animals, respectively; squamous dysplasia was in 10/14 (71.4%), 10/13 (76.9%), 5/14 (35.7%) of rats, respectively; Barrett's esophagus was in 6/14 (42.9%), 5/13 (38.5%), 1/14 (7.1%), respectively. One esophageal adenocarcinoma was found in Group A; no histological changes were observed in Group D.

CONCLUSIONThe animal models of reflux esophagitis can be induced by esophagojejunostomy, esophagoduodenostomy or total gastrectomy plus esophago-jejunostomy in rats; and the former two surgical modalities are better than the later.

Animals ; Barrett Esophagus ; Disease Models, Animal ; Esophagitis, Peptic ; classification ; Esophagus ; surgery ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley

AIM: To evaluate the relationship between damages of visual field and retinal nerve fiber layer (RNFL) thickness in primary open angle glaucoma (POAG)with highly myopia. POAG with highly myopia group (21 eyes of 17 cases), POAG with non-highly myopia group (17 eyes of 16 cases), highly myopia without POAG group (25 eyes of 20 cases) and normal control group (19 eyes of 17 cases).automated perimeter and thickness of RNFL was measured by optical coherent tomography(OCT). Main outcome mean deviation (MD), pattern standard deviation (PSD) and mean sensitivity at superior, inferior, nasal and temporal sectors in total deviation probability plots. Thickness of RNFL at superior, inferior, nasal and temporal sector.total deviation probability plots of the early POAG with highly myopia than that of POAG without highly myopia,and the early visual field defects of glaucoma in pattern deviation probability plots of this group. MD of POAG with highly myopia was more than those of others (P＜0.05).The differences of MD, PSD and mean sensitivity between POAG with highly myopia and others were significant(P＜0.05).Mean sensitivities in each sector of POAG without highly myopia were similar to those of highly myopia(P＞0.05). The thickness of RNFL of POAG with highly myopia was thinner than that of others and the thickness of RNFL of normality was thicker than that of others. The relationship between mean sensitivity and the thickness of RNFL in each quadrant was significant(P＜0.05).judgment of the visual field changes in POAG with highly myopia. The relationship between RNFL thickness by OCT and visual field damage may provide clinically relevant information in diagnosis of POAG with highly myopia. Field; optical coherent tomography

OBJECTIVETo compare anatomical differences between subinguinal and ilioinguinal approaches for the treatment of acetabular fracture and investigate clinical therapeutic effect of subinguinal approach.

METHODSSeven fresh human bodies were chosen, comparative study were performed on the right and left side on the same specimen. Ilioinguinal approaches were adopted on the left and subinguinal were adopted on the right. Inner part of incision started to sun wild above pubic symphysis at 2 cm, and lateral incision ranged from iliac to anterior superior spine about 5 cm. Length and transverse diameter of the first window exposed and lliopsoas freeness were tested and compared. Fifteen acetabular fracture patients treated through subinguinal approach were compared from May 2010 to August 2012. Among all patients, including 12 males and 3 females aged from 20 to 65 years old with an average of 40.6 years old. Matta criteria were used to evaluate clinical outcomes.

RESULTSLength and transverse diameter of the first window exposed and lliopsoas freeness through subinguinal approach were better than through ilioinguinal approach (P<0.01). In 15 patients with acetabular fracture, 10 patients obtained anatomical reduction and 10 patients got satisfied reduction in accordance with Matta criteria. X-ray results of all patients were excellent.

CONCLUSIONCompared with ilioinguinal approach, subinguinal approach could enlarge visualization of the first window and simplify surgical procedure. It is an ideal approach to expose anterior and anterior-medialis wall of acetabulum and anterior hip capsule.

Acetabulum ; injuries ; surgery ; Adult ; Aged ; Female ; Fracture Fixation ; methods ; Fractures, Bone ; surgery ; Groin ; Humans ; Male ; Middle Aged

ObjectiveIn order to provide reliable sufficient information for making a policy to develop Emergency Departments in Chinese Medical Hospitals, a countrywide investigation on current situations of such departments was carried out.Methods Firstly, questionnaires which could be responded by filling out on line and paper were made respectively. The Departments of Emergency in 300 Chinese Medical Hospitals widely distributed in 27 provinces of China (municipalities directly under the central government) with technique level 2 or above were observed in this study by Red Cap database or Email.Results All together 280 questionnaires were sent out, and 200 questionnaires were responded. The information from 200 emergency departments of Chinese medical hospitals in 24 provinces was collected, the recovery rate being 71.42%. The investigative results were as follows: ① All Chinese medical hospitals involved in this study were equipped with an independent emergency department. The average occupation of ground area, numbers of ward beds and ambulances in these emergency departments were 713.6 m2, 18.93 and 2.81 respectively, and 75.8% of the hospitals were of the first aid local network units.② There were 26 emergency departments having internal, surgical, women and children emergency clinics, 83 hospitals had internal and surgical emergency clinics only, and in 91 hospitals there was no any special clinic in emergency department. In addition, only did 81 hospitals have intensive care units (ICU).③ The number of clinicians was 11.86±9.28 on average, and 26 hospitals even had no emergency specialists. In 39 hospitals, there were no emergency clinicians with high rank title, most of these clinicians had bachelor or master's degree, and only did 30 hospitals have emergency clinicians with PhD degree.④ The annual average patient admitted in emergency departments of these hospitals was 2.36 thousand cases, including 1197.38 rescue ones. The clinicians who could accomplish abdominocentesis and thoracentesis independently were accounting for 90.7% and 89.0%, respectively, 8.2% hospitals could carry out percutaneous coronary intervention (PCI), and more than 70% hospitals already had the emergency green channel.⑤ About 93.5% hospitals had established a management system of medical quality control, and 89.0% hospitals had already had a medical quality control group.⑥ 65.5% hospitals had assessment index of Utilization rate of traditional Chinese Medicine, and 52.5%hospitals routinely conducted discussions on cases treated primarily by Chinese medicine (CM).Conclusions The development levels of emergency departments of all Chinese medical hospitals involved are very uneven, on which more attention should be paid. The enhanced investment is required to construct the emergency clinics and improve medical techniques in order to meet the growing need of the first aid in our society.

The effect of sterilization methods on biological activity of fibronectin on the surface of biomaterials was elaborated in the present study. Sterile protein- modified biomaterials were fabricated by microfilter filtration and UV irradiation, respectively. UV irradiation altered the conformation of surface- adsorbed fibronectin and further affected the attachment, morphology and biological function of endothelial cells. However, microfilter filtration did not to change the normal conformation of fibronectin, or the proliferation and biological function of endothelial cells, indicating that microfilter filtration sterilization is the most suitable method for protein-substrate.
Cell Adhesion ; radiation effects ; Fibronectins ; radiation effects ; Filtration ; Prostheses and Implants ; microbiology ; Sterilization ; methods ; Ultraviolet Rays

The ensemble empirical mode decomposition (EEMD) can be used to overcome the mode mixing problem of empirical mode decomposition (EMD) effectively. The EEMD method and Hilbert-Huang Transform (HHT) can be used to analyze pulse signals of Traditional Chinese Medicine (TCM). The amplitudes of the added white noise were about 0.1 and 0.2 time standard deviation of the investigated signal respectively. The difference of average frequency and average energy of every mode between normal pulse, slippery pulse, wiry pulse and wiry-slippery pulse were demonstrated based on different amplitudes of the added white noise. The results showed that it is more in line with clinical practice when the amplitude of the added white noise is about 0.2 time standard deviation of the investigated signal.
Algorithms ; Artifacts ; Diagnosis, Differential ; Humans ; Medicine, Chinese Traditional ; methods ; Pulse ; Signal Processing, Computer-Assisted

Objective: To evaluate the immunogenicity of HIV-1 clade C/B’ vaccine based on modified vaccinia virus Ankara (MVA) vector in mice. Methods: Mice were inoculated with 3-dose HIV vaccine by intramuscular injection. Blood sample were collected every second week, and then the antibodies against HIV were detected. At week 6, mice were killed and cellular immune responses were examined by ELISPOT. Result: The number of spot forming cells in the 107 pfu/ml -dose group was more than those of 105 pfu/ml -dose and 106 pfu/ml -dose groups significantly. HIV specific antibodies emerged at week 2 and elevated rapidly at week 4 and week 6. The level of specific IgG in the 107 pfu/ml -dose group was more than those of 105 pfu/ml -dose and 106 pfu/ml -dose groups significantly. Conclusion: The ADMVA induces both humoral immunoresponse and cellular immune responses.

OBJECTIVETo investigate the expression of ARA55 mRNA in the prostate carcinoma tissues and its clinical significance.

METHODSReal-time RT-PCR was used to examine the expression of ARA55 mRNA in the samples of the prostate carcinoma tissues from 32 patients.

RESULTSARA55 mRNA expressed in different degrees in all the samples. The Ct values were 20.57 +/- 0.20 and 16.33 +/- 0.31 at T1-T2 and T3-T4 stages, 23.13 +/- 0.13 and 17.3 +/- 0.19 for those with Gleason score < or =7 and >7, 24.70 +/- 0.27 and 17.21 +/- 0.34 for those with PSA < or =10 microg/L and >10 microg/L, and 23.82 +/- 0.21 and 16.71 +/- 0.32 for those that responded to endocrinological therapy and those that failed to, respectively. There was a significant difference between the former and the latter.

CONCLUSIONARA55 mRNA expression is significantly correlated with the clinical characteristics of the patient. And ARA55 can be regarded as a prognostic molecular marker for prostate carcinoma as well as a predictor of endocrinological therapeutic effect on the disease.

Aged ; Aged, 80 and over ; Follow-Up Studies ; Gene Expression Regulation, Neoplastic ; Humans ; Intracellular Signaling Peptides and Proteins ; genetics ; LIM Domain Proteins ; Male ; Middle Aged ; Neoplasm Staging ; Prognosis ; Prostatic Neoplasms ; genetics ; pathology ; therapy ; RNA, Messenger ; genetics ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Treatment Outcome