On the basis of the system requirement on medical oxygen supply in modern hospital, from the aspects of rigorous installation, ensuring logical course environment, following related technological standard and enhancing personnel training, the whole quality course management is put up. It is indicate that proper equipment and quality control in evary link are the quarantee of clinical service.

[Objective] To discuss the opportunity and method of the posterior route operation in the upper-middle thoracic fracture to resume the thoracic vertebral normal sequence、decompression completely and reconstruction immediate stability as soon as possible,so as to relieve pressure to spinal cord and nerve and avoid the secondary trauma of spinal cord and nerve and blood vessel and patients can do rehabilitation.[Method]Seventeen cases of the patients with upper-middle thoracic vertebral fracture were operated on with posterior route early decompression、fusion、internal fixation under general anaesthesia.There were 17 cases including male 11 and female 6 with the ages from 18 to 53 years(average 33.8 years).The injury reason: 7 cases as traffic accident,10 cases as falling from high altitude.The time from trauma to hospital were 1 hr.to 72 hrs.(average 15.4 hrs.).The injured segment of vertebral: T5～T10 segment,T5 2 cases,T6 6 cases,T7 5 cases,T9 4 cases,T10 2 cases.The function evaluation of spinal cord: 10 cases with incompletely neurological defect,7 cases with completely neurological defect.[Result]All patients were followed for 6~27 months(average 13.5months).The thoracic vertebra restoration were contentment and bone fuse were obtained in 12 weeks after operation.10 cases with incompletely neurological defect got improved postoperatively and 5 cases activity normolly.7 cases with completely neurological defect got improved of numbness and pain.[Conclusion]The upper-middle thoracic vertebral fracture can be operated early and the outcome are contentment.

BACKGROUND: Proliferation and differentiation of mesenchymal stem cells (MSCs) is associated with platelet concentration in platelet-rich plasma (PRP). Low enrich multiple cannot reach proper effects, but high level had inhibitory effects on osteoanagenesis.OBJECTIVE: To observe the effect of different volume fraction of PRP on dog BMSC proliferation.DESIGN: A cytological in vitro study.MATERIALS: Healthy 12-month male Beagle dogs were supplied by the Experimental Animal Center, Xiangya Medical College,Central South University.METHODS: Dog BMSCs of 5 passage were adjusted to 3×10~8/L, and incubated in a 96-well plate at 200 μL per well. Following 24 hours of routine culture, primary medium and non-adherent cells were discarded. Prepared PRP gel was mixed with serum-free low-glucose DMEM containing penicillin and streptomycin, and then diluted into 5%, 6.25%, 7.5%, 8.75%, 10% volume fraction. 200 μL above-described liquid was added into the 96-well plate, which was subsequently placed in a incubator.We set up a blank control.MAIN OUTCOME MEASURES: MTT was used to investigate effect of different volume fraction of PRP on dog BMSC proliferation.RESULTS: Compared with the blank control group, various volume fraction of PLP could promote dog BMSC proliferation in early stage. With prolonged time, proliferation speed began to increase at day 6 in the 8.75% and 10% PRP groups, entering platform stage. BMSC number was increased rapidly in the 5% and 6.25% PRP groups, especially in the 6.25% PRP group.CONCLUSION: PRP gel could promote BMSC proliferation markedly and proliferation strength of BMSCs was correlated to the density of PRP. BMSC proliferation would be accelerated by the low density of PRP.

BACKGROUND: Platelet-rich plasma (PRP) contains abundant growth factors that were needed for osteanagenesis. Moreover,the proportion of each growth factor formed by an organism, with good synergism.OBJECTIVE: To explore the influence of PRP on osteogenetic activity of canine bone marrow mesenchymal stem cells (BMSCs) after induction in vitro.DESIGN, TIME AND SETTING: The in vitro cytological experiment was performed at the Central Laboratory of Xiangya Hospital of Central South University from June 2007 to February 2008.MATERIALS: Healthy 12-month male Beagle dogs were supplied by the Experimental Animal Center, Xiangya Medical College,Central South University.METHODS: The 3~(rd) generation BMSCs were collected and divided into 4 groups. BMSCs in the control group were incubated in standard medium. BMSCs in the osteogenetic induction medium group were incubated in high-glucose DMEM containing fetal calf serum, dexamethasone, beta-sodium glycerophosphate and vitamin C. BMSCs in the PRP group were incubated in low-glucose DMEM containing 6.25% PRP. BMSCs in the combination group were incubated in high-glucose DMEM containing 6.25% PRP, dexamethasone, beta-sodium glycerophosphate, and vitamin C.MAIN OUTCOME MEASURES: Alkaline phosphatase activities were measured. Expression of collagen type I was examined by immunocytochemical staining. Calcium tuberoses were labeled using modified Von Kossa staining. Expression of osteocalcin mRNA was examined by RT-PCR.RESULTS: Levels of alkaline phosphates of all groups became increased along with time. The alkaline phosphates level of combination group was strongest (P < 0.05). Following 7 and 14 days of induction, type I collagen expressed positively in the osteogenetic induction medium and combination groups, but negatively in the PRP and control groups. Following 14 days,formation of calcium nodules were found in the osteogenetic induction medium and combination groups. Following 7 and 14 days,expression of osteocalcin mRNA were similar between the control and PRP groups (P > 0.05), which was significantly lower than the osteogenetic induction medium and combination groups (P < 0.05). Expression of osteocalcin mRNA was significantly lower in the osteogenetic induction medium group compared with the combination group (P < 0.05).CONCLUSION: PRP gel can effectively promote osteoblastic effect of BMSCs after induction in vitro following induction in osteogenetic medium.

Objective To investigate the compound donkey-hide gelatin syrup in reducing adverse reactions of qi-blood weakness patients caused by clozapine.Methods 132 patients from Psychiatric Hospital of Yunnan Province between January 2010 and June 2010 were randomly divided into a treatment group and a control group.Both groups were taken clozapine orally.On this basis,the treatment group was taken compound donkey-hide gelatin syrup and the control group was taken placebo syrup.After 8 weeks treatment for both groups,the PANSS,TESS,physical examination and experiment examination were observed to evaluate the clinical efficacy and safety.Results ① the total curative effect:the treatment group was 73.53％,the control group was 65.63％,showing statistical difference (x2=2.543,P＜0.05).② PANSS scores changes before and after the treatment:PANSS score at 2,4,6,8 weeks after the treatment of both groups were [(72.51 ±27.55),(60.54±24.03),(53.12± 15.27),(48.15± 11.88) in treatment group respectively,and (70.71 ±23.90),(58.89± 18.95),(53.06± 14.38),(48.98 ± 9.78) in the control group,respectively],both showing significant difference than the same group before the treatment [(103.99±39.12) in the treatment group,(99.78±34.35) in the control group] (P＜0.05).But there was no statistical significance between two groups (F=2.413,P＞0.05).③ adverse reactions:during the treatment liver function,blood cell analysis,dystonia,Parkinson's obstacle,akathisia,abnormal gastrointestinal reaction,heart rate,heart rate variability and blood pressure in the treatment group was significantly lower than the control group (x2=4.562,P＜0.05).Conclusion Compound donkey-hide gelatin syrup can effectively relieve adverse reactions in qi-blood weak psychosis patients after clozapine treatment and improve their drug tolerance.

The training program of radiation therapists in the United States has been established early, and the mode of training, qualification and continuing education are relatively complete. Literature review was conducted at home and abroad and United States Department of Labor, American Registry of Radiologic Technologists, American Society of Radiologic Technologists as well as Joint Review Committee on Education in Radiologic Technology websites were reviewed. The training mode, qualification, work content, continuing education and employment situation of American radiotherapists were analyzed, aiming to provide some reference and enlightenment for the establishment of a new model for the training of professional radiologists suitable for the national conditions of China Mainland.

Objective: To study common problems in BRAF gene mutation detection, and conditions for repetition testing using thyroid fine needle aspiration specimens. Methods: A total of 8 644 cases of thyroid fine-needle aspiration specimens at China-Japan Friendship Hospital were collected between February, 2012 and July, 2018. BRAF gene mutation was detected by real-time PCR. Repeat testing was performed in 237 cases when the results were inconsistent with clinical or cytological diagnosis or when uncertain results were obtained. Results: The final positive rates of BRAF mutation was 22.0% (1 897/8 625). Nineteen cases were excluded due to inadequate DNA samples. The average Ct value of internal quality control was 16.061, and the average Ct value of the positive samples was 19.147. Among 237 repeat tests, 51.4% (19/37) continued to have poor DNA quality and 48.6% (18/37) had adequate DNA resulting in 1 positive case and 17 negative cases. In 40 repetition of initial negative cases, results were unchanged. In initial positive cases, 40.4% (40/99) with a difference of Ct value (between BRAF gene and internal quality control) between 8 to 12 turned negative after repetition, 69.8% (37/53) of these cases with a difference of more than 12 turned negative after repetition. The sensitivity and specificity of BRAF mutation were 83.97% and 96.94%, respectively. Conclusions Difference between BRAF gene Ct value and internal quality control Ct value is recommended as a reliability index for the test result. Cases with a difference greater than 8 should be subjected to repeat testing.

Objective To explore the gender differences in disgust processing in patients with ob-sessive-compulsive disorder ( OCD). Methods A total of 74 patients with obsessive-compulsive disorder (39 males and 35 females) and 65 normal healthy controls (35 males and 30 females) were assessed with Padua inventory-Washington State University revision (PI-WSUR),Yale-Brown obsessive-compulsive scale (Y-BOCS) and were tested the lexical decision task,in order to evaluate their OCD symptoms and severity. The results of reaction time,accuracy and rating intensity of core disgust words,moral disgust words and neu-tral words were recorded,and the gender differences in disgust processing in patients with obsessive-compul-sive disorder and normal healthy controls were analyzed. Results The reaction time of core disgust words ((753.6±84.1) vs (711.8±83.8)ms),the reaction time of moral disgust words((813.5±89.0) vs (749.4± 81.4)ms) and neutral words((775.3±91.8) vs (725.9±104.2)ms) showed significant differences between males and females in pateints with OCD,but there were no differences in accuracy and rating intensity(P＜0.05 or P＜0.01). In normal healthy controls,there were only differences between males and females in reac-tion time of neutral words,females were also showed shorter reaction time than males (P＜0.01). Pearson cor-relation analysis showed that both male and female patients had a negative correlation between the reaction time of core disgust words and total PI-WSUR scores (P＜0.05). There was a gender difference in the relative variables of PI-WSUR,Y-BOCS and disgust processing in OCD patients. Conclusion There were gender differences in disgust cognitive processing in patients with obsessive-compulsive disorder,females with ob-sessive-compulsive disorder have higher core disgust and moral disgust than males. Females with OCD have a special high sense of moral disgust.