The 60-90 KD antigen of Schistosama japanicum isolated from SEA by SDS-PAGE was used to immunize female C57BL/6 mice viasubcutaneous injection route. Protective immunity against challenge infection with cercariae of S. japonicum was evaluated by the adult worm reduction rate, and the levels on humoral and cellular immunity in immunized mice.A high level of anti-SEA antibody litre in sera collected from immunized mice was detected by ELISA. The value of the adult worm reduction rate showed that there was no significant protective effect on challenge infection and no obvious difference beween immunized mice and non-immunized control groups. In addition, the data of T-cell proliferative response to ConA of spleen cells revealed that 60-90 KD antigen inhibited the response of T-cell to the mutagen. The possibility of induction of different results of immunity was discussed.

Objective] To summarize the diagnosis and treatment of Professor Cai Wanru, famous Chinese medicine doctor of the state, the tutor of doctoral student in treating bronchial asthma. [Method] The author studies from the teacher, col ecting medical records, analyzing and learning the dialectical thinking and prescriptions of Professor Cai during treating bronchial asthma. [Results] According to the different stages of bronchial asthma, Professor Cai adopts the combination of differentiation and disease differentiation, uses Chinese medicine to treat bronchial asthma. We should clean lung and phlegm, smoothen breathing during exacerbation of asthma, invigorate the spleen and tonify the lung qi during remission of asthma, at the same time advocate treating winter disease in summer during consolidating period. In addition, clearing lung and regulating Qi should be used throughout al the course of disease. Professor Cai is good at using drug pairs and Chinese medicine flexibly, simply, effectively. [Conclusion] Professor Cai Wanru has been engaged in clinical respiratory department of internal medicine for a long time, having rich experience and unique insights on bronchial asthma, chronic cough, chronic obstructive pulmonary disease and other common respiratory system disease, worth learning.

Objective To analyze the corneal flap thickness in laser in situ keratomileusis(LASIK) using Moria M2 microkeratome and to identify the related factors. Methods Sixty patients with LASIK were divided into two groups: M2 90 group,using the Moria M2 90 microkeratome,n=30;M2 110 group,using the Moria M2 110 microkeratome,n=30.All were performed on both eyes with the right one treated first.Subtraction pachymetry was used to measure corneal flap thickness which was analyzed statistically with the data including age,preoperative corneal diameter,curvature,corneal thickness and refraction. Results In the 30 patients of M2 90 group,the mean corneal flap thickness of right eye and left eyes were(128.03?12.03)?m(105~156 ?m) and(123.40?12.38) ?m(92~147 ?m),respectively,and the corneal flap thickness were statistically different between the right and left eyes(P

1.1 ), constrictive remodeling(RI 0.05 ). However, more culprit lesions with compensatory remodeling were present in patients with ACS(49% vs 12%, P

Purpose:To investigate the susceptible factors and treatment against cross infection in hospital of cancer patients.Methods:174 cases of cross infection in hospital of cancer patients from 1997 to 1999 were analyzed for infective site, infective agent and infectious bacteria. Results:174 cases of cross infection in hospital of cancer patients were found, which was 10.45% of the in paitents of the same period. The majority (108/174) had infection of tissues and organs within irradiation fields after radiotherapy. Respiratory tract infection rate was 76.43%. 16 cases (40.0%) were found to have secondary infection of digestive canal after chemotherapy in the 40 cases of infection of digestive canal. Bone marrow deression or chronic failure and long term decubitus were also causes of infection. In addition, mycotic infection was 43.42% (33/76) in bacteriological tests with bad prognosis.Conclusions:Cross infection in the hospital occurs that patients enfeebled by radiotherapy, chemotherapy, chronic bone marrow failure and long term decubitus. Attention should be paid to the possibility of mycotic cross infection in hospitals, as the prognosis could be quite serious. As soon as the diagnosis is confirmed, early and full dose treatment by anti mycotic drugs should be given.

The finding and research on yeast prion are of great values for biology and medical sciences.Research advances in molecular chaperones, especially in Hsp104p, Hsp70p and Hsp40p, regulating yeast prion [PSI+] propaga-tion,are reviewed.

Objective To analyze the plasma procalcitonin (PCT) as a predictor of the severity of community acquired pneumonia (CAP) in elderly patients.Methods Totally 90 elderly patients hospitalized with community acquired pneumonia from 2010 to 2011 were analyzed retrospectively for the relation between plasma procalcitonin and severity of pneumonia.All cases were divided into two groups,the severe group (n=36) and the non-severe group (n=54) according to diagnostic criteria.Results The level of plasma PCT was much lower in the severe group (median 2.44 μg/L) than that in the non-severe group (median 0.11 μg/L) (U=335.50,P=0.000).Among all patients,when PCT was lower than 0.5 μg/L,the incidence of non-severe CAP was 76％,however,when PCT was equal or above 2.0 μg/L,the incidence of non-severe CAP was reduced to 9％.In Binary logistic regression analysis,PCT was a risk factor of aged person with severe community acquired pneumonia independent of age and CRUB-65 scores [OR =1.328 (95 ％ confidential interval:1.072,1.645)].PCT had a positive correlation with CRUB-65 scores (U=10.162,P=0.006).In all cases,the patients who improved well had lower PCT value than the remaining (median 0.21 μg/L,17.0μg/L; U=10.000,P=0.000),which also happened in severe cases (median 1.47 μg/L,17.0 μg/L;U=8.000,P=0.000).The area under the receiver operating characteristic curve was 0.872 (95％ confidential interval:0.741,0.914).At a PCT cut-off level of greater than or equal to 2.0 μg/L,the sensitivity and specificity to predict the severity of aged person with CAP was 55.6％ and 98.9％ respectively.Conclusions Plasma PCT may be a good predictor to evaluate the severity of CAP in elderly patients.

Objective To estimate the operative risk and outcomes of colorectal cancer patients 80 years of age and older. Methods Colorectal cancer resection was performed in 99 patients 80 years of age and older between Dec. 1987 and June 2005. The informations about clinical data, co-morbidity,complications, operative mortality and survival were retrospectively analyzed. The patients were followed-up for 45.12 months (range 1-136) months. Results Of 99 patients, co-morbidity was found in 43 patients (43.4% ) and complication in 10 patients (10.1%). No patient died of operation.Eighty patients completed the follow-up study. The overall 3-year survival rate and disease-free survival rate were 64.3% and 61.1%, respectively. Whereas the overall 5-year survival rate and disease-free survival rate were 52.8% and 52.1%, respectively. In univariate analysis, curative or palliative operation, tumor differentiation, cancer embolism in the vasculature, tumor staging and complications were proved to be significant prognostic factors. Multivariate survival analysis,however, showed that only the curative or palliative operation was independent factor for survival.Conclusions The high risk of co-morbidity for patients 80 years of age and older is not the obstacle to cancer resection.These patients will have satisfactory outcomes via optimal treatment and operation.

Objective To further investigate the pathohistology of chronic gastritis in children and the relationship between helicobacter pylori(Hp) infection and mucosal chronic inflammatory.Methods Gastric antrum biopsies were carried out from children who had chronic gastritis confirmed by gastroendoscopy during the past 3 years in our hospital.The results of pathohistological observation were analyzed by retrospectire method.Results One thousand six hundred cases of chronic gastritis were included,in which 1007 cases without Hp infection,593 with Hp infection.Among the patients without Hp infection,mild inflammatory were much more than mode-(rate) or severe inflammatory(86% vs 14%).Although,in patients with Hp infection,mild inflammatory were the most common presentation(63%),moderate and severe inflammatory were more predominant in patients with Hp infection.The degree of inflammatory was increased with the quantity of Hp infection.The ratio of lymphocytes,neutrophils and lymphoid follicles in gastric mucosa was much higher in Hp positive group than negative one(94%,40%,22% vs 60%,11%,5%,respectively),and the difference was significant in statistic analysis.Gastric mucosal atrophy was found more in Hp positive group(16.5%) than negative one(7%).The proportion of intestinal metaplasia in cases with Hp infection was 1.5% compared with 0.1% in these children.Conclusion The study shows that there is a close relationship between Hp and antrun chronic inflammation and mucosal atrophy.

Humans are exposed to the ubiquitous radiofrequency (RF, 100 kHz-300 GHz) electromagnetic fields because of the mushroom development of wireless communications,raising concerns over the possible hazards of RF radiations.Epidemiological investigation has showed that chronic use of cellphones increases the risk of brain tumors.Since genetic damage is closely related to tumors, researchers have been trying to find out whether cellphones and other RF devices are genotoxic.However, the investigations have yielded both negative and positive results.This review summarized the recent in vitro and in vivo researches about genotoxicity of RF radiations and proposed a possible mechanism by which of RF radiations cause genetic damage.