In order to adapt to teaching reform of Medical Immunology and create a"golden course",through teaching prac-tice,our research group proposes a"three-dimensional curriculum teaching system",which organically combines teaching concepts with teaching design and process,with construction of various resources(material libraries),and finally,multi-level teaching evalua-tion is completed to achieve overall unity of teaching.

In order to adapt to teaching reform of Medical Immunology and create a"golden course",through teaching prac-tice,our research group proposes a"three-dimensional curriculum teaching system",which organically combines teaching concepts with teaching design and process,with construction of various resources(material libraries),and finally,multi-level teaching evalua-tion is completed to achieve overall unity of teaching.

Objective:To investigate the relationship between urinary polycyclic aromatic hydrocarbons(PAHs) metabolites and pulmonary function in community population.Methods:A total of 4 812 participants were recruited from two communities in Wuhan city from April to May 2011 and two communities in Zhuhai city in May 2012. Information of demographic characteristics and life style was collected by semi-structural questionnaire. Physical examination was performed and pulmonary function was measured. Morning urine was also collected. The concentration of 12 urinary PAHs metabolites was tested and classified into four types by chemical structure, including hydroxynaphthalene, hydroxyfluorene, hydroxyphenanthrene and hydroxypyrene. The level of pulmonary function in different group of urinary PAHs metabolites was compared by using covariance analysis. The association of the urinary PAHs metabolites and pulmonary function was analyzed by using generalized linear model, and the interaction of different population characteristics and life style on the association was analyzed.Results:The age of participants was(51.99±13.64) years old, and 67.66% ( n=2 565) of the population were women. The M ( P25, P75) of concentration of total urinary PAHs metabolites was 5.72 (3.91,8.72) μg/mmol Cr. After controlling for variables including age, gender, city, Waist-to-Hip Ratio, smoking status, drinking situation, physical activity, cooking meals at home or not, kitchen ventilation and exposure to dust as confounding factors, generalized linear model showed that each 1-unit increase in log-transformed levels of hydroxynaphthalene, hydroxyfluorene, hydroxyphenanthrene, hydroxypyrene and total PAHs was associated with 26.83 (95% CI: -48.18, -5.48) , 21.86 (95% CI: -40.49, -3.23), 26.18(95% CI: -48.27, -4.09), 34.95 (95% CI: -55.95, -13.94), and 35.23 (95% CI: -58.93, -11.54) ml reduction of FVC and 29.36 (95% CI: -47.23, -11.48), 20.79 (95% CI: -36.39, -5.19), 22.65 (95% CI: -41.15, -4.15), 31.44(95% CI: -49.03, -13.85), and 33.20 (95% CI: -53.04, -13.36) ml reduction of FEV 1 respectively (all P values<0.05). Compared to non-alcohol users and participants with home cooking, the association was more evident in alcohol users and participants without home cooking( P for interaction<0.05). Conclusion:The exposure to PAHs was associated with decreased pulmonary function, and the association was more evident in alcohol users and participants without home cooking.

Objective:To investigate the relationship between urinary polycyclic aromatic hydrocarbons(PAHs) metabolites and pulmonary function in community population.Methods:A total of 4 812 participants were recruited from two communities in Wuhan city from April to May 2011 and two communities in Zhuhai city in May 2012. Information of demographic characteristics and life style was collected by semi-structural questionnaire. Physical examination was performed and pulmonary function was measured. Morning urine was also collected. The concentration of 12 urinary PAHs metabolites was tested and classified into four types by chemical structure, including hydroxynaphthalene, hydroxyfluorene, hydroxyphenanthrene and hydroxypyrene. The level of pulmonary function in different group of urinary PAHs metabolites was compared by using covariance analysis. The association of the urinary PAHs metabolites and pulmonary function was analyzed by using generalized linear model, and the interaction of different population characteristics and life style on the association was analyzed.Results:The age of participants was(51.99±13.64) years old, and 67.66% ( n=2 565) of the population were women. The M ( P25, P75) of concentration of total urinary PAHs metabolites was 5.72 (3.91,8.72) μg/mmol Cr. After controlling for variables including age, gender, city, Waist-to-Hip Ratio, smoking status, drinking situation, physical activity, cooking meals at home or not, kitchen ventilation and exposure to dust as confounding factors, generalized linear model showed that each 1-unit increase in log-transformed levels of hydroxynaphthalene, hydroxyfluorene, hydroxyphenanthrene, hydroxypyrene and total PAHs was associated with 26.83 (95% CI: -48.18, -5.48) , 21.86 (95% CI: -40.49, -3.23), 26.18(95% CI: -48.27, -4.09), 34.95 (95% CI: -55.95, -13.94), and 35.23 (95% CI: -58.93, -11.54) ml reduction of FVC and 29.36 (95% CI: -47.23, -11.48), 20.79 (95% CI: -36.39, -5.19), 22.65 (95% CI: -41.15, -4.15), 31.44(95% CI: -49.03, -13.85), and 33.20 (95% CI: -53.04, -13.36) ml reduction of FEV 1 respectively (all P values<0.05). Compared to non-alcohol users and participants with home cooking, the association was more evident in alcohol users and participants without home cooking( P for interaction<0.05). Conclusion:The exposure to PAHs was associated with decreased pulmonary function, and the association was more evident in alcohol users and participants without home cooking.

Objective To evaluate CT imaging and pathological features of maxillofacial malignant myoepithelioma (MME). Methods A total of eight patients with pathologically confirmed MME of the maxillofacial region were underwent non-enhanced and contrast-enhanced CT scans.CT features of the lesions were assessed as follows:location,number,shape,size,enhancement pattern and CT number on non-enhanced and contrast-enhanced scan.CT features were compared with the pathological results.Results All the lesions were unilateral,in which mixed type with clear cells and spindle cells in 5 cases,mixed type with epithelioid cells and plas-ma cells in 2 cases,and clear cell type in one case.8 cases were manifested as lobulated mass.On non-enhanced scan,the density of all the lesions were hetergeneous with cystic area,1 case with calcification and 2 cases with bone destruction.On the contrast-en-hanced CT,all the lesions were showed hetergeneously moderate or obvious enhancement,and cystic,line and crack areas without the enhancement were observed.Minor vessel and spiculate protuberance of marginal zone on the arterial phase were observed in most le-sions.Conclusion MME has different pathological subtypes and characteristic CT features.CT is an effective method to diagnose MME.

OBJECTIVE To investigate the infection episode and related risk factors in continuous hemodialysis patients. METHODS The relationship among infection and etiologies of infection,nutritional status,pathogens and causes of chronic renal failure(CRF) were retrospectively analyzed in 180 continuous hemodialysis patients. RESULTS Totally 113 times infections were observed among the 86 inpatients under continuous hemodialysis.The main infectious site in hemodialysis patients was lungs.Thirty eight times were positive in 50 times of etiologic detection,Gram-negative germ was the most common(60.3%).Hemoglobin and serum albumin decreased obviously in infectious patients.Diabetes and systemic lupus erythematosus patients were more susceptible to infection.The hepatitis virus infections rate in hemodialysis patients was relatively high. CONCLUSIONS There is higher infections rate in continuous hemodialysis patients.Diabetes and systemic lupus erythematosus patients are more susceptible to infection.Anemia,lower serum albumin,old age and bad compliance are the susceptible factors.

AIM: To investigate the pharmacological effects of recombined basic fibroblast growth factor (rbFGF) on retinal ganglion cells (RGCs) of rats. METHODS: Using calibrated cross-action forceps a moderate crush injury was inflicted on the nerve. After crush injury, rbFGF, saline and VB 12 were administered by retrobublar injection. Four weeks after injury , the apoptosis of RGCs was measured with flow cytometer. RESULTS: Four weeks after operation, it was shown that the rbFGF, but not saline or VB 12 injection could significantly improve the maintainance of RGCs of rats. After 800 U, 1600 U and 2400 U rbFGF injection, the injured RGCs were rescued by 24.5%, 27.3% and 28.5% respectively. Furthermore, it was also found that rbFGF injection could effectively prevent the axons from injury. The flow cytometer showed that the rate of apoptosis was reduced markedly on 7 days at rbFGF group. CONCLUSION: rbFGF can significantly promote the functional repair of injured optic nerve. [