Objective To determine the concentration difference in protoporphyrin in cancerous intestine and to discuss its application in laser-induced autofluorescence diagnosis for colorectal cancer at early stage.Methods We detected the concentration of protoporphyrin Ⅸ in 30 patients with colorectal cancer and 30 control patients, as well as that in 60 cases of intestinal tissues (30 control tissues and 30 cancer tissues).Results The concentration of blood protoporphyrin Ⅸ in patients with colorectal cancer was significantly higher than that in the controls (P<0.05). Protoporphyrin Ⅸ concentration in the cancer tissue was significantly higher than that in the control tissues (P<0.05).Conclusion That the concentration of protoporphyrin in cancerous intestine becomes abnormally high may be the material basis for spectrum intensity peak of (644.3±5.7)nm in laser-induced autofluorescence diagnosis for colorectal cancer at early stage.

According to the large stray capacitance of the gate terminal of power MOSFET,this paper introduces the main characteristics and application of IC driver MAX626/7/8,especially designed for the high speed power MOSFET.The ultrasound generator made from that chip is simple in circuit,stable when working as well as small and light for carrying.

Objective To compare the characters of circadian rhythm of the cardiovascular function between full-term and premature infants.Methods Blood pressure(BP),aortic blood velocity(ABV),aortic blood acceleration(ABA) and aortic strok distance(ASD) were continuously measured in full-term and premature infants for 48 h.Each time series was analyzed with 24-hour cosine curve-fitting method.Results The parameters of cardiovascular function in most of the full-term infants,including BP,ABV,ABA and ASD showed robust circadian rhythm,but most of premature infants did not show obvious circadian rhythm.The averages of those parameters were not different in full-term and premature infants,whereas the amplitude were significant different in the two groups.Conclusion It is indicated that the functions of the cardiovascular system was not different in full-term and premature infants,but circadian rhythm of cardiovascular system in premature infants has not perfectly developed.

liver cells. The thermosensitivity of the normal rabbit hepatocyte was higher than that of biliary epithelial cells to radiofrequency ablation. Apoptosis was correlated to the thermal effect induced by RFA.

Objective To investigate natural killer(NK) and NKT cells in acute pancreatitis(AP).Methods Changes of NK and NKT cells in peripheral blood of 86 AP cases were detected using muhiparameter flow cytometry.Results Compared with control group,the NKT cells decreased in AP patients (t =5.23,P =0.00),but NK cells didn't (t =-1.15,P =0.25).NKT cells in severe SAP and mnoderate MAP were lower than that in the control group (t =-3.92,P =0.00;t =4.84,P =0.00).There was no statistically significant difference of NK cells between MAP and the controls (t =-0.54,P =0.59),but NK cells in SAP group was obviously higher than that in control group (t =3.12,P =0.00).After one week treatment,NK cells significantly decreased (t =8.43,P =0.00).NKT cells were higher than control group (t =-4.44,P =0.00).Dynamic monitoring in AP patients found continuous declination in NK cells,and NKT cells experienced an increase before a falling.Conclusion Monitoring of NK and NKT cells can be used as an important index for the severity and response to treatment in acute pancreatitis.

Objective To investigate the diagnosis and treatment of cervical intraepithelial neoplasia and their clinical effect Methods The cases who were diagnosed as CIN through cytology, colposcopy biopsy and histopathological diagnosis were collected from January 2004 to June 2009 in Songjiang Hospital Affiliated to Shanghai Jiaotong University School. Drug therapy, physical therapy, cervical conization and hysterectomy were performed according to the lesion degree of CIN and patients' willingness. Some cases were further treated with surgery, radiotherapy or chemotherapy according to the pathological findings of the initial excision specimens. With long-term follow-up at 6,24 months after the treatment,we performed a comparative analysis on pathological diagnosis and therapeutic effects. Results Seven hundred and fifty cases of CIN were diagnosed after cervical cancer screening,among which,460 cases of CIN Ⅰ ,180 cases of CINⅢⅡ and 110 cases of CIN Ⅲ. Five hundred and Senventy-eight cases received treatment, among which, 46 cases received drug treatment After 6 months, focus disappeared in 32 cases, sustained in 10 cases, upgraded in 2 cases and canceration occurred in 2 cases. 13 cases received physical therapy,no recurrence occured. Four hundred and thirty-five cases received conization treatment, 34 cases with focus upgraded and 4 case recurred after the operation. 84 cases received hysterectomy, of which, 11 cases focus upgraded after the operation and no recurrence. The cases with focus upgraded or recurred all received additional treatment. The effective rate of physical therapy,conization treatment and hysterectomy on all grades of CIN was more than 98% at 2 years, and 69. 7% of drug treatment. The omission diagnostic rate of colposcopy guided biopsy on invasive carcinoma was 2. 2% , and the residual rate of focus of hysterectomy specimens after conization was 16. 2% . Conclusion Colposcopy including multi-point biopsy has high accuracy and specificity in early diagnosis of CIN . Cervical conization is the main method of the treatment of CIN. Patients with CIN Ⅲ and without desire of fertility should consider the removal of the uterus after cervical conization. Drug conservative therapy of CIN should be chosen carefully.

One hundred and twenty-two patients with confirmed cervical intraepithelial neoplasia (CIN), as a result of occasional screening for uterine cervix cancer in our out-patient clinic between July 2006 and August 2007, and 122 control patients with cervicitis who received colposcopy during the same period were enrolled in this study. Our results showed that 72% participants didn't receive uterine cervix cancer screening during the past 2 years; 55% women had premarital sexual behavior. CIN was most commonly seen in 30 to 34 year old women. Occasional screening could identify 75% CIN. In comparison with the control group, the incidence of earlier first sexual behavior, marriage, and delivery, multiple pregnancy, and frequent abortion was significantly increased in the study group (P < 0.05). We suggest that increased access to uterine cervix cancer screening might be more important than technical improvement.

This study was aimed to evaluate the relationship between the changes of plasma intermedin (IMD) and atrial fibrosis in hypertensive patients with atrial fibrillation. During the period from 2010 to 2011, appropriate 150 subjects of out-patients (female 50%, male 50%) were selected in West China Hospital, Sichuan University, and were divided into three groups: the hypertension-only group, the hypertension combined with paroxysmal atrial fibrillation group and the hypertension combined with persistent atrial fibrillation group. Firstly, we collected the Physical examination results and medical history records of the patients. We then performed ultrasound cardiogram and blood biochemical tests on the patients. We also detected the plasma IMD and transforming growth factor β1 (TGF-β1) using ELISA. The results showed that compared with the hypertensive group, the plasma level of IMD, TGF-β1 and left atrium director (LAD) in the hypertensive combined with atrial fibrillation group were higher significantly. Compared with the paroxymal atrial fibrillation group, the levels of IMD, TGF-β1 and LAD were higher significantly in persistent atrial fibrillation group. Analysis of correlation and partial correlation showed that IMD was positively correlated with TGF-p1 (r=0.51, P<0. 001), IMD was positively correlated with LAD(r=0.59, P< 0.001), and TGF-β1 was positively correlated with LAD (r = 0.57, P < 0.001). The results suggest that IMD might suppress the pathophysiological process of atrial fibrillation.
Atrial Fibrillation ; physiopathology ; Female ; Humans ; Hypertension ; physiopathology ; Male ; Peptide Hormones ; blood ; Transforming Growth Factor beta1 ; blood

Objective Re stenosis is the common complication of stenting. This study was designed to investigate the functional changes of fibroblast in local re stenosis esophageal tissue after stenting and its relation to re stenosis. Methods Sixteen healthy adult dogs were divided into four groups. Esophageal stent was placed by means of “autogenous broad fascia transplantation and fixation”. At the end of 1,2,4 and 8 weeks,the dogs were killed, and the esophageal tissue with stent were taken out and analyzed by gross observation, light microscopy and electron microscopy. The expression of proliferation cell nuclear antigen (PCNA) and alpha smooth muscle actin (? SMA) in esophageal tissue at 1,2,4 and 8 weeks after stenting were studied by immunohistochemistry. The contents of hydroxyproline and gross amino acid(AA) in re stenosis tissue were measured by amino acid analysis. Results At week 1 and 2 the inflammatory reaction occurred evidently in stented esophagus, with granulation and fibrosis; in some places esophageal tissues began to proliferate towards the lumen. At week 1 some fibroblasts began to express PCNA and ? SMA, and at week 2 the expression augmented significantly. The content of hydroxyproline and AA was significantly higher in the esophageal tissues at 1 and 2 weeks after stenting than that in normal esophagus. At week 4 and 8 esophageal lumen became narrow conspicuously, with a lot of fibrotic tissue and few inflammatory cells. Only a few fibroblasts displayed the expression of PCNA instead of the expression of ? SMA at week 4. There was no expression of PCNA and ? SMA at week 8. The content of AA at week 4 increased significantly compared with that at week 2, and the level was similar between 4 and 8. Electron microscopy revealed that the fibroblasts were in the state of vigorous proliferation and secretion in esophageal tissue at week 2, and a lot of fibrotic tissue formed at week 8. Conclusions Re stenosis mainly expressed as granulation and fibrosis. At week 4 and 8 the fibrosis becomes stable gradually with the lessening of inflammatory reaction. Within 4 weeks of stenting fibroblast retains active proliferation and secretion, but after week 4 the function of fibroblasts gradually lessen or even lose.

[Objective] To investigate the therapeutic status of laparoscopic management for gallbladder stones and common bile duct stones. [Methods] A Retropective study were adopted to analysize the therapeutic scheme,effect for patients with gallbladder stones and common bile duct stones who were treated from January 1996 to September 2004. [Results] 68 cases were diagnosed, and most of them underwent single stage laparoscopic cholecystectomy (LC) and common bile duct exploration (LC BDE). A few of them were treated through endoscopic procedure in combination with LC, or open surgery when the minimal invasive surgery failed. [Conclusions] Both them indicated that patients by LC+LCBDE have shorter hospital stay, easier recovery and less complications. LC+LCBDE has obvious advantage over the other methods with appropriate operative time and high success rate. For choledochlithiasis patients, the single laparoscopic management should be a better, major option.