Objective To analyze 85 cases of small bowel stromal tumor with follow-up results,and compare the clinical factors on the prognosis of disease. Methods Getting started from clinical records,a specific database was designed and clinical data concerning patient demographics,clinical findings,lab results,radiology reports,endoscopy reports,perioperative parameters,pathology reports and follow-up notes were input into the database. The influences of clinical factors on prognosis were compared by inquiring about the database. Results It was revealed through follow up that the maximal tumor diameter(relative risk,1.7) and tumor surface ulceration(relative risk,6.0) were two independent prognostic factors closely related to the survival(P

Objective To investigate the changes of SARS-IgG in serum,X-ray of lung and lung function in severe acute respiratory syndrome(SARS)patients.Methods During the period of 2003-06~2004-04,the SARS-IgG in serum,X-ray of lung and lung function tests were checked up in 103 SARS patients by Guangzhou Institute of Respiratory Disease in regularly every 3 months after their discharge from hospital and the SARS-IgG level in serum was compared with another 20 healthy medical workers.Results 1.On the third day after the onset of SARS disease,the optical density(OD)value of SARS-IgG in serum was(0.063?0.012)which was significantly higher than the normal control group. Moreover,from then on,it increased step by step and went up greatly in the third week(0.180?0.202)and attained the highest level(1.730?0.331)in the fourth month. Then it decreased step by step and in the 17th month,it dropped to(0.668?0.109).2.The chest X-ray of 32.3%of 62 cases became normal in the first 3 months after onset of SARS and that of 56.5% did in the 17th month.However,if 22 cases were taken into account,who did not have a re-check,80% of the cases became normal and the left 5 cases were severe patients. 3.The lung function of 16 of 25 cases became normal in 6 months after onset and among the other 9 cases,the lung function of 4 cases had an improvement in the following 3 to 6 months.Conclusion The OD value of SARS-IgG in serum in the third day can be used as a screening test of SARS. Its remarkable increase in the third week will support the diagnosis.The chest X-ray and lung function of SARS patients will improve gradually and become normal in the final.

Objective To explore the therapeutic effects of radical mastectomy(RM) and extended radical mastectomy(ERM) for stage II, III breast cancer. Methods The 5 year and 10 year survival rates in 691 patients with stage II, III breast cancer treated either by extended radical mastectomy or radical mastectomy were retrospectively analyzed . Out of the 691 patients, 206 stage II cases and 193 stage III cases underwent RM, and 142 stage II and 150 stage III cases received ERM. Results In patients with stage II, III breast cancer located in the central portion or medial portion of mammary, the 5 year survival rates and in stage III patients 10 year survival rate after ERM were significantly higher than those after RM (P

Objective To analyze the levels and speciation of arsenic metabolites in urine of rats treated with sodium arsenite and sodium arsenate in order to investigate the different aspects of metabolism between sodium arsenite and sodium arsenate,thus to understand further the basic data about relationship between it's metabolism and mechanism of toxicity. Methods Seventy Wistar rats,weighting 80-120 g,were divided into 7 groups of 10 each,such as normal control group,high,middle and low sodium arsenite group and high,middle and low sodium arsenate group. After the animals were fed for one month,the urine was collected by metabolic cage in 12 hours. Applying the high efficiency liquid chromatography and hydride genesis atomic fluorescence spectroscopy (HPLC-HGAFS),the levels and speciation of arsenic metabolites were determined in urine of rats. Meanwhile,the recovery rate of dimethyl arsinic acid(DMA) would be determined to estimate the degree of accuracy of results. Results The levels of iAs~(3+),iAs~(5+) and DMA in middle sodium arsenite group[(121.66±1.26),(10.26±2.68),(200.91±0.56) μg/L]were higher than the high sodium arsenite group[(113.20±0.75),(5.16±1.32),(147.70±μ0.77)μg/L,all P < 0.05]and low sodium arsenite group[(79.35±2.12),(5.13±2.25),(56.35±1.23)μg/L,all P < 0.05]. The levels of iAs~(3+) and DMA in middle sodium arsenate group[(315.81±1.69),(245.12±1.18)μg/L]were higher than the high sodium arsenate group[(85.03±0.56),(110.34±1.04)μg/L,all P< 0.05]and low sodium arsenate group[(22.97±2.67),(15.75±2.15)μg/L,all P < 0.05]. Compared with sodium arsenate group,the levels of iAs~(3+) and DMA in high and low sodium arsenite group were higher(all P < 0.05) ; and the levels of iAs~(3+) and DMA in middle sodium arsenite group were lower(all P < 0.05). Meanwhile,the average urinary recovery rate of DMA of rats in different sodium arsenite group were 94.80%-102.70%,and the average urinary recovery rate of DMA of rats in different sodium arsenate group were 95.33%-108.40%. Conclusion The speciation and levels of arsenic are influenced by the external exposure dose,and some distinction appeared in the metabolism and metabolic path between sodium arsenite and sodium arsenate in urine in vivo.

How does brain select and adjust the distributed neural activities to achieve its function? To address this problem,researchers introduce Granger causality analysis method to brain functional study,which deals with the estimation of causal influences among multi-variables.First,basic principles of Granger Causality and its improved algorithm structural vector autoregression (SVAR) are introduced.Then several technical problems are reviewed which should be noted when analyzing brain functional signals by Granger Causality Methods.In the end,the application foreground of Granger Causality in epilepsy localization is introduced by taking idiopathic generalized epilepsy as the example.

Catechols ; urine ; Chromatography, High Pressure Liquid ; methods ; Electrochemistry ; methods ; Humans ; Hydroquinones ; urine

Chlorzoxazone ; blood ; Chromatography, High Pressure Liquid ; methods ; Cytochrome P-450 CYP2E1 ; blood ; Humans

Adult ; Bronchoalveolar Lavage ; nursing ; Female ; Humans ; Male ; Middle Aged ; Pneumoconiosis ; nursing ; therapy ; Retrospective Studies

Capillary Electrochromatography ; Chromatography, Gas ; methods ; Hexanones ; urine ; Humans ; Occupational Exposure

The clinical and fundamental research for intrahepatic and extrahepatic biliary stones were still inadequate currently.It was difficult for treat and has the following clinical features:extensive he-patic lesion,complex conditions,more complications,higher recurrence rate,etc.Satisfactory results were hard to gained if just depend on conventional surgery recently.As the methods of diagnosis and treatment are continuously increasing:Ultrasound,CT,MRCP,Choledochoscope,Cholangiography and 3D imaging of hepa-tobiliary system.From the traditional open operation to a variety of minimally invasive treatment.Different examination and treatment methods has its advantages and disadvantages.How to choose the effective,less trauma,appropriate pathway method is the main direction for the current research.