Objective To investigate the effect of granulocyte-macrophage colony-stimulating factor(GM-CSF) on rat calcitonin(CT).Methods A total of 48 SD healthy rats were randomly divided into control group,low GM-CSF(10?g/kg?d) and high GM-CSF dosage(50?g/kg?d) groups.The rats in experimental groups were continuously treated by an intraperitoneal application of GM-CSF for over 7 days.The level of calcitonin was measured by radioimmunoassay(RIA),and the serum calcium(Ca),ALP and phosphorus(P) were examined by biochemical method.Results The level of the serum calcium in high-dosage GMCSF group was lower than that in the control group(P0.05).Conclusion The high dosage GM-CSF can decrease the serum calcium;the low-and high-dosage GM-CSF can decrease the serum calcitonin,but has no effect on the level of serum phosphorus and ALP.

Objective:To investigate the influence of the granulocyte-macrophage colony-stimulating factor(GM-CSF) on rat thyroid parafollicular cells(C cells).Methods: A total of 48 healthy SD rats were randomly and equally divided into a control group,a low dose group(GM-CSF 10 ?g/kg?d-1) and a high dose group(GM-CSF 50 ?g/kg?d-1).The latter two groups were treated by intraperitoneal administration of GM-CSF at their respective doses for 7 days,and then the thyroid parafollicular cells were stained by immunohishtochemical streptavidin-peroxidase(S-P) technique and their number counted.Results: The number of C cells was(67.43 ? 13.73)in the high dose group,significantly smaller than that of the low dose group(85.97 ? 20.12)(P

Objective To study the changes and significance of HBV DNA and it's antigen and antibody in patients with liver transplanting.Methods 35 cases with liver transplanting in 302th hospital from Oct.2006 to Mac.2007 has been studied.The HBV antigen and antibody has been studied by ELISA in 188 samples including one from before transplanting and 4 to 7 from after transplanting.The quantitative of HBV DNA has been detected by real time PCR technology.45 cases of hepatitis B,whose sera HBV DNA is positive no more than 10 000U/ml,treated with lamifudine in 2 weeks about has been used in controls.Results 95(34/35)percent of liver-transplanting patients acquired serum-transfer in HbsAg to it's antibody,and 6 patients with HBeAg positive acquired from HbeAg to it's antibody in 2 days after transplanting.The HBV DNA in sera is distinguished of 34 cases from 35s in 6 months after liver-translpanting.Only one patient is insisting with HBsAg and HBV DNA positive.In lamifudine treatment controls,none of patients acquired sera-transferred from HBsAg to antibody in 45 cases.The HBV DNA is decreased from positive to negative under cove in 11 controls.29 cases of HBV DNA are decreased in 2 to 3 Log E after treatment with lamifudine.The HBV DNA is insisting in high levels in 5 patients.The HBeAg is negative in 29 cases after lamifudine treatment,but it's antibody is not acquired serum transferring.Conclusion The HBV DNA,HbsAg and HbeAg in patients with HBV infection may be transferred into negative forever transplanting with healthy liver underlined in HBIG and lamfudine treatment.

Objective To preliminary investigate the cytoactive of HELA cell after PUMA gene promoting HELA cell apoptosis and whether or not the protein of cyt-c,AIF in the chondrosome have participated in the process of PUMA gene inducing HELA cell.Methods we Used AO/EB dyeing to detect the Morphologic change of cell induces by PUMA gene and Western Blot to detect whether or not the position of cyt-c,AIF in the chondrosome have transferred after PUMA gene induces HELA cell apoptosis.Result ①Fluorescence microscope and inverted phase contrast microscope display HELA cell have a series of apoptosis Morphologic change after transfecting PUMA into HELA cell,and this Morphologic change of cell is more obviously after transfecting 48h than after 24h.;②Western Blot display the protein cyt-c and AIF transferred toward to kytoplasm after HELE cell took place apoptosis,the mount of transfecting protein is more obviously after transfecting 48h than after 24h.Conclusion ① PUMA gene have the effect of promoting HELA cell apoptosis;②cyt-c and AIF take part in the process of promoting HELA cell apoptosis,but during this process if the membrane potential of chondrosome was changing need to do some more study to confirm it.

An overall improvement of teaching quality is the core task of the reform and the development of higher education. Based on the analysis of the main factors of affecting the teaching quality in universities and combined with the implementation of “views on improving the overall qual-ity of higher education”by the Education Ministry, countermeasures for improving the teaching quality of undergraduates have been proposed such as increasing higher education funds investment to im-prove the condition of running a school, paying attention to the construction of teaching management staff to improve the level of teaching management, establishing Teacher Development Research Center to consolidate the fundamental position of undergraduate teaching , utilizing the high-quality social resources to implement the collaborative education innovation, and improving the personnel training system to strengthen the teaching quality standard .

Objective To observe the distribution of the calcitonin(CT) in the submandibular glands of rat. Methods The submandibular gland tissues of the 16 SD health rats were taken to examine by the immunohistochemical streptavidin-peroxidase(SP) technique. Results The results showed that the immunoreactive CT can be observed,they mainly distributed in serous alveoli,serous cells of mixed alveoli,and every duct were also positively immunoreactive to CT.Conclusion The submandibular glands of rat might secrete CT.This suggests that submandibular glands might be related with the regulation of calcium and phosphorus.

ObjectiveTo evaluate the role of perfusion weighted magnetic resonance imaging ( PWMRI ) in distinguishing brain glioma recurrence for postoperative radiotherapy patients.Methods Thirty-five patients with suggested recurrent brain glioma (20 true,15 false) were examined by conventional MRI and PWMRI.Regions of interests (ROI) were manually drawn in contrast-enhancing lesion,surround edema region and normal white matter of contra-lateral brain on regional cerebral blood volume (rCBV) images.rCBV values of ROI and rCBVmax were measured,the standardized rCBV ratios were calculated,The mean rCBVmax ratio were compared between two lesion types with group t-test.The rCBVmax ratios of contrastenhancing regions was analyzed by the receiver operating characteristic curve.ResultsThe mean rCBVmax ratio of contrast-enhancing lesion in tumor recurrence was higher than those in non tumor recurrence (4.36vs 1.28,t =3.00,P =0.005 ).The mean rCBVmax of edema regions in tumor recurrence was also higher than those in non tumor recurrence ( 1.79 vs 0.85,t =2.41,P =0.026).Four patients with recurrent tumor and three with non tumor recurrence were wrong diagnosed when set the recurrent tumor rCBVmax ratio ＞2.15.The diagnostic sensitivity,specificity and accuracy for recurrent tumor by PWMRI were 80％respectively.Conclusion PWMRI examination is a useful method for distinguishing brain glioma recurrence.

Objective To summary MRI findings and its diagnostic value of Balo's concentric sclerosis .Methods Brain MRI images of 4 cases with Balo's concentric sclerosis were studied with review of the literature in 13 cases.Results MRI showed multiple ring-like lesions within brains in 16 patients and single lesion only in 1.The deep white matters of cerebrum were involved in all patients.The cerebellum and brain stem were invaded in 2 and 4 respectively. Typical concentric sclerosis lesions demonstrated alternate middle and low signal rings on T1WI, middle and high on T2WI. The ring-like lesions were best seen on T1WI. The middle signal rings were enhanced on post-contrast images.The typical multiple sclerosis lesions were seen in 7 patients. Conclusion Balo's concentric sclerosis has characteristic findings on MRI.MRI is a very reliable diagnostic methed for this disease.

Objective To analyze the features of supraclinoid internal carotid aneurysms. The experience and mistakes in the microsurgery of supraclinoid internal carotid aneurysms were summarized to improve the results. Methods The data of 24 cases of supraclinoid internal carotid aneurysms that were operated from May 2004 to March 2009 were reviewed. There were 6 cases of small or middle aneurysms, 18 cases of large or giant aneurysms. The operative methods included direct clipping, partial excision of aneurysm with reconstruction of the parent artery, aneurysm trapping with extracerebral/intracerebral (EC-IC) bypass, etc. Results Among the 24 cases, 8 cases had good results. Ten cases occurred hemiplegja post operation immediately, with 5 cases recovered to grade IV ,3 cases had aphasia,5 cases with vision acuity fall,4 cases had abnormal eyeball movement,2 cases had continued coma and died finally. Second operations were performed in 3 cases. The total operation rate of well results was 66.7% (16/24). Mortality rate was 8.3% (2/24). Conclusions The operative technique of the supraclinoid internal carotid aneurysms is difficult because of the location and the large size of the aneurysms. The temporary obstruction' of the parent artery is often needed, so the aneurysm can be partially resected and clipped. The results of clipping of large or giant aneurysms are better than the other methods. But in large or giant aneurysms that had thrombus, the EC-IC bypass is needed to prevent large infarction. The bypass procedure may induce some severe complications that result in some poor outcome.

Teaching reform for medical statistics in postgraduate students was undertaken in order to comply with the longitudinal thought of medical research and to cultivate student's abilities of solving actual problems. The contents of theory courses and practicum courses were re-enacted and some advanced statistical methods commonly used in medical research were added. Meanwhile,the contents of practicum courses were reformed following the guideline of ‘application of statistics in the research’ and the teaching method of task-driven teaching combined with problem-based learning was used in the process. Furthermore, evaluation on the teaching effect was made. The reformed teaching model greatly excited student's learning enthusiasm and developed their abilities of applying statistics in scientific research.