Objective To observe the morphological characteristics of oval cells in human chronic liver diseases, and determine whether there is a relationship between the number of oval cells and liver fibrotic stage. Methods Oval cells were detected in paraffin bedded liver sections of 3 normal subjects (as controls) and 29 chronic liver diseases, using histoimmunochemistry. Cells were counted if they fulfiled the morphological criteria for oval cells and showed cytoplasmic staining. Results Oval cells were not observed in normal livers. In chronic liver diseases, oval cells were located predominantly in the periportal region and fibrosis septa, characterized by an ovoid nucleus, small size, and scant cytoplasmic. The number of oval cells increased significantly ( F=22.60, P

One hundred patients underwent coronary artery bypass grafting and thirty patients underwent replacement of mitral valve were included in this study, and patients were randomized to two groups. Adenosine group (group I):6 mg adenosine was diluted with physiological saline and injected from the root of the ascending aorta after blocking it. The aorta was then perfused with high-potassium cold-blood cardioplegia. Control group (group II):the aorta was just perfused with high-potassium cold-blood cardioplegia. Adenosine was only added in first perfusion in adenosine group. Both groups were reperfused half-amount of cold-blood cardioplegia containing potassium every 30 minutes. Relevant clinical indexes and myocardial enzymological determination were compared between two groups. Results For patients who underwent CABG, the cardiac arrest induced time,ICU dwell and assisted ventilation time after surgery and dopamine usage were all less in adenosine group than those of control group (P < 0.05). There were no significant differences in the total number of cardioplegia of perfusion fluid, the total amount of perfusion, clamping aorta and assisting circulation times and automatic rebeating between two groups (P>0.05). For patients who underwent MVR, the cardiac arrest induced time and dopamine usage were all less in adenosine group than those of control group (P<0.05). There were no significant differences in times and total number of cardioplegia of perfusion fluid, clamping aorta and assisting circulation times, ICU dwell and assisted ventilation time after surgery automatic rebeating between two groups (P>0.05). For both operations, 4 hours after clamping aorta, creatine kinase isoenzyme (CK-MB) was less in adenosine group than that of control group (P<0.01 or P<0.05), and 4 hours and 24 hours after bypass, cardiac troponin I (cTnI) was significantly higher in control group than that of adenosine group (P < 0.05). Conclusion After aorta is clamped, immediate injection of adenosine diluent and cold-blood cardioplegia containing potassium from the root of the ascending aorta can lead to quick heart arrest, reduce the release of myocardial enzymes and dosage of vasoactive agents, and shorten ICU dwell and assisted ventilation time.

Objective To observe the effect of traditional Chinese medicine internal and external treatment on chronic osteomyelitis.Method Chronic osteomyelitis experimental animal models were set up with debridement, then it was random divided into two groups ( antibiotics group for the control group, antibiotics and traditional Chinese medicine group for the observation group).After treatment for 10 days, new capillaries in the tissues surrounding sinus crossings were detected by pathological observation and VEGF expression was determined by ELISA.Result VEGF expression and vascular points of tissues surrounding sinus crossings of antibiotics with traditional Chinese medicine group were obviously higher than that of antibiotics group[ (47.48 ±3.22) μg/ml vs (28.26 ±2.61)μg/ml, P ＜0.01;8.03 ±1.73 vs5.17 ±2.89, P＜0.05 ].Conclusion Traditional Chinese medicine internal and external treatment can improve VEGF expression and increase capillary number inside tissues surrounding sinus.crossings , thus it can promote the healing of chronic osteomyelitis.

Objective To investigate the role of apoptosis in hepatocyte injury in tyep Ⅰ autoimmune hepatitis (AIH). Methods Using transferase mediated UTP biotin nick end labling (TUNEL) technique and immunohistochemistry with anti Fas antibody, we detected apoptosis cells in 10 liver biopsy samples and 3 control livers obtained from normal subjects. Result Hepatocytes in all AIH liver tissues were positively stained by TUNEL and anti Fas antibody in various degree. In contrast, control tissues did not show DNA fragmentation or positive stain with anti Fas antibody. A significant correlation was seen between apoptosis index (AI) and necroinflammatory grading ( r =0.45, P

OBJECTIVE To study the risk factors and protection measures for the occupational exposure to HBV,and reduce the occupational exposure risk of blood.METHODS A survey was carried out among 1352 medical staff.And then we carried on the analysis to 43 questions of it and used Logistic regression analytic method to find out the risk factors and protective measures.RESULTS Seventy one persons had occuptional exposure risk to HBV and 56 persons had needle puncture wound or sharp wound.The risk factors included needle puncture wound or sharp wound,blood contaminated skin and mucous membrane,and the long working life.While knowledge of infection control,protection consciousness,washing hands,using gloves,and wearing glasses were the protective factors.CONCLUSIONS It plays the vital role to reduce occupational exposure to HBV that the medical staff should reduce injury in work,vaccinate the HBV vaccine,use protection goods and raise the protection consciousness.

Objective To assess the reproducibility of long-term blood pressure variability in ischemic stroke and the association between the variability and cerebral microbleeds.Methods Patients with ischemic stroke at the previous 1-6 months were consecutively recruited and followed up 12-18 months.Blood pressure measurements were taken at every interview.Blood pressure variability indicated visit-to visit variability and was quantified by calculating the maximum ( Max),standard deviation (SD) and coefficient of variation (CV).For these variability might positively correlated with mean of blood pressure,the additional variability measure,SD independent of mean (SDIM),was also calculated.To determine the reproducibility of mean and variability measurements,the intraclass correlation (ICC) was also calculated.MRI was performed at baseline and the end of the study.Cerebral microbleeds were rated using Microbleed Anatomical Rating Scale (MARS).Multiple Logistic regression was used to assess the association between the visit-to-visit blood pressure variability and cerebral microbleeds.Results A total of 720 patients were recruited,of whom 595 (82.6％) subjects were present for 14 blood pressure readings during follow-up.The visit-to-visit blood variability measurements were moderately reproducible according to the ICC:0.46-0.72 for systolic blood pressure (SBP) and 0.42-0.69 for diastolic blood pressure ( DBP),respectively,P ＜0.01 for all measures.Patients with cerebral microbleeds were more likely to have higher mean blood pressure and variability for both SBP and DBP regardless the distribution of cerebral microbleeds.Being SBP Max,SBP SD,SBP CV,SBP SDIM(OR=1.036,95％ CI l.021-1.052,P=0.000; OR=1.060,95％CI 1.001-1.122,P =0.046; OR =1.084,95％ CI 1.000-1.175,P =0.049; OR =1.065,95％ CI 1.002-1.132,P =0.044) and DBP SD,DBP CV ( OR =1.111,95％ CI 1.000-1.233,P =0.049;OR =1.091,95％ CI 1.001-1.190,P =0.047) were the independently risk factors of cercbral microbleeds at deep region; SBP Max( OR =1.049,95％ CI 1.029-1.068,P =0.000) and DBP SD、DBP CV(OR =1.236,95％ CI 1.107-1.379,P=0.000;OR =1.188,95％ CI 1.087-1.298,P=0.000)independently associated with cerebral microbleeds at infratentorial location.There was no significant relation between the long-term variability of blood pressure and cerebral microbleeds at lobar region. Conclusions This study indicates that long-term blood pressure variability is substantial and independently associated with cerebral microbleeds in deep or infratentorial but not with that in lobar region.The different relations between the variability and cerebral microbleeds might indicate the heterogenic mechanisms of cerebral microbleeds.