Objective To study the mechanism of occurrence of the multifocal bladder cancers. Methods The expressions of p21,p53 and EMA in twenty specimens from 5 cases of multifocal bladder cancers were studied by means of immunohistochemistry. Results In 4 of 5 cases, the expressions of p21 and p53 were correspondent in scattering specimens from the same patient. In all the 5 cases, the expressions of EMA were correspondent in scattering specimens from the same patient. Conclusions Multifocal bladder cancer may originate from the same monocolone.

Objective To evaluate the clinical features,diagnosis and treatment of metastatic adrenal carcinoma. Methods The data of 11 cases of metastatic adrenal carcinoma who were admitted from December 1993 to March 2003 were reviewed,including 4 cases of lung carcinoma,5 cases of hepatocellular carcinoma,1 case of bile duct carcinoma and 1 case of renal cell carcinoma.The main clinical manifestations were waist pain in 3,fatigue and weight loss in 3,hematuria in 1 and no symptom in 4.All the 11 cases underwent B-ultrasonography and CT scan,of whom 2 underwent positron emission tomography (PET).All patients were treated by surgical operation,including 9 cases by total adrenalectomy,1 case by palliative adrenalectomy and 1 bilateral metastatic case by left-adrenalectomy alone. Results In 5 cases by total adrenalectomy the survival time was 6 to 63 months with a mean of 34 months.Two cases were followed up for 2 to 16 months and 2 cases were lost with follow-up.One case by palliative adrenalectomy survived for 3 months.One bilateral metastatic case by left-adrenalectomy survived for 4 months. Conclusions Ultrasonography and CT are important in the diagnosis of metastatic adrenal carcinoma,and PET is of greater value in clinical practice.Complete adrenalectomy may be the best treatment choice to prolong the survival time.

Objective To summarize the CT signs and clinic characteristics to improve the CT diagnoses ability on the lobar bronchial intraluminal cancer and provide a well comprehension for it.Methods To study the clinical symptom and CT presentation in 7 cases with the lobar bronchial intraluminal cancer which had been confirmed by bronchoscopy and pathologic exam.Results 3 cases were in right superior lobaris bronchus,1 case in right middle lobaris bronchus,3 cases in left superior lobaris bronchus.Obstructive pneumonia were found in 7 cases.Obstructive atelestasis in 5 cases.The nodules or emboluses within lobaris bronchus were showed by CT in all cases and the obstructive signs on each patient in its degrees. Conclusion To get the CT diagnosis of the lobar bronchial cancer is easily be delayed. But if pay attention and keep it a close combination with clinic, the early diagnosis will be attained on time.

Objective To evaluate the use of spiral Double J stent in the treatment of complica ted ureteral calculi with extracorporeal shockwave lithotripsy (ESWL). Methods Spiral Double J stent was inserted in 52 patients with complicated ureteral calculi before ESWL,and the conventional Double J stent was inserted in 45 patients as control. Results In the control group,the number of ESWLprocedures was 4.2,while in spiral Double J stent group,it was 3.8( P

Objective To evaluate the clinical effect of Ho:YAG laser with flexible ureteroscope on the treatment of renal calculi. Methods Fifty one cases of renal stone burdens were treated with Versa Pulse Select Ho:YAG lithotriptor through flexible ureteroscope. Results The successful rate of stone fragmentation after single session was 90%(45/51).Mean operation duration was 45 min (30～78 min).Mean duration of post operation in hospital was 2.4 days (1～6 days).Stone free time was 3～6 weeks,with a mean of 4 weeks.No ureteral perforations or pyonephrosis occurred. Conclusions Ho:YAG laser lithotripsy through flexible ureteroscope is a safe, effective treatment for renal calculi.

Objective To evaluate the clinical effect o f Ho:YAG laser on the treatment of urinary calculi. Methods 155 cases of urolithiasis were treated via ureteroscope or cystoscope with V ersa Pulse Select Ho:YAG lithotriptor. Results 8 cases with kidney stones and 7 bladder stones were fragmented after a single s ession. The overall successful stone fragmentation rate of ureteral calculi was 95.7%(134/140). The mean stone expectoration time stone-free was 2.5 weeks. The mean operation time and post-operation hospital stay were 25 minutes and 2.5 da ys. No major complications such as perforation were encountered. Co nclusions Ho:YAG lithotripsy is an excellent treatment modality for urolithiasis.

Objective To study the feasibility of renal hypothermia achieved by retrograde icecold saline infusion with perfusion pump. Methods Twenty-one patients who received the open radical nephreetomy were divided into three groups,A group with ice-slush renal hypothermia,B group with gravitational retrograde ice-cold infusion,C group with retrograde ice-cold infusion by perfusion pump.After the kidney was dissected and the ureter was divided,the renal vasculars were clamped.The kidney was cooled by three methods respectively.The temperature of renal parenchyma was monitored for 15 min. Results Fifteen minutes later,the temperature of renal parenchyma of A group declined from 34.4℃ to 5.4℃,B group from 34.8℃ tO 23.8℃,C group from 35.1℃ to 22.3℃.Coneiusions Renal hypothermia can be achieved by retrograde cold saline infusion and the perfusion pump may accelerate the speed of cooling.

Motion segment and extraction from continuous signals is the premise of surface electromyography (sEMG) analysis. For the problem that sEMG energy threshold required repeated manual testing to set, this the paper established a this mathematical model of continuous actions based on Gaussian sEMG energy curve, in which the energy threshold was set according to the distribution of Gaussian signal section, and differentiated the action signals from no-action signals combined with energy comparison method. The experiment results showed the method can achieve continuous repetitive action segmentation, and compared with manual segmentation of the same signal, has a higher degree of coincidence.
Algorithms ; Electromyography ; Humans ; Motion ; Pattern Recognition, Automated ; Signal Processing, Computer-Assisted

Aim To detect the effect of Bio on impro-ving insulin resistance and explore its molecular mech-anism. Methods The HepG2 liver cells were derivat-ed by high concentration insulin to establish the insulin resistance cell model, and the cells were intervened by Bio. The glucose consumption was measured by glu-cose oxidase and peroxidase ( GOD-POD) assay. The expression of PPARγmRNA was detected by RT-PCR. The expression of PPARγ protein was detected by Western blot method. Results The glucose consump-tion was significantly decreased in the insulin resist-ance cells after incubated with 1 . 72 × 10 -5 mol · L-1 insulin ( P<0. 05 ) . 10 -5 ,10 -6 ,10 -7 mol · L-1 Bio increased the glucose consumption 135%,62%,39%separately in the insulin resistance cells. RT-PCR a-nalysis of PPARγ showed that Bio raised the PPARγmRNA. Western blot analysis displayed that the pro-tein of PPARγ with Bio was increased. Conclusion Bio can improve the insulin resistance of the HepG2 cells, and the molecular mechanism may be relevant with raising PPARγ expression.

Objective To study the inhibitory effects of andrographis paniculata and silybum marianum on the efflux system of MRSA 41577. Methods Inhibitory effects of andrographis paniculata and silybum marianum on efflux system of MRSA 41577 was evaluated using fluorescence spectrophotometry.PCR was applied to detect the norA efflux gene.By RT-PCR method for detection of andrographis paniculata and silybum marianum influence of the expression of norA efflux gene.Results Andrographis paniculata and silybum marianum significantly increased the accumulation of ciprofloxacin in MRSA 41577 in a time-dependent manner.At 12 minute, andrographis paniculata and silybum marianum respectively increased ciprofloxacin in MRSA41577 by 49% and 76%( P <0.05 ) , which is superior to that of reserpine. Further mechanism studies indicated that andrographis paniculata and silybum marianumcould reduce the expression of norA in MRSA 41577.After incubated with andrographis paniculata and silybum marianum for 16 h, the relative expression of norA of MRSA41577 was respectively reduced by 35% and 42% ( P <0.05 ). Conclusion Andrographis paniculata and silybum marianumcould inhibit MRSA efflux system through reducing pathogen ’s expression of norA and NorA protein.