The article expounds the four signs of the realization of the fast and striking development in the higher learning of medical sciences during the ninth five-year plan. It analyzes the internationalization of higher learning, the developing strategy in the tenth five-year plan of our country, the development of science and technology, the reformation of health system and the challenge and pressure in the fast development of the higher learning of medical sciences, with which the higher medical education is confronted in the 21th century. It also points out the stable scale, the adjustment of structure, the reinforcement of the teaching, the fundamental policy and the teaching construction strategy in the development of the higher learning of medical sciences in the new age. Besides, it dwells on the reformation thinking about the teaching ideology and concept, the personnel training model the content, method and means of teaching as well as the system of teaching management.

Objective To investigate relation between atrial enlargement and pathogenesis of atrial tach yarrhythmia.Methods 786 patients were observed with atrial tachyarrhythmia through 24-hour electrocardiographic monitoring,echocardiographic was used to analysis atrial enlargement.Results The patient with left atrial enlargement in atrial tachyarrhythmia was more than those with right atrial enlargement(73.82%vs 21.25%,P＜0,01).Conclusions Atrial enlargement,especially left atrial enlargement,was the one of most important pathogeny in atrial tachyarrhythmia.The enhancement of pressure and muscle tension in atrial were the major factors of electronicphysiobgy disorganization,and the left atrial was the leading position in patients with electronicphysiology abnormity.

We developed a novel method for the rapid determination of lysozyme using a new fluorogenic substrate that consists of a cationic aluminum phthalocyanine ( tetra ( trimethylammonio ) aluminum phthalocyanine, TTMAAlPc ) , and an anionic mucopolysaccharide ( heparin, HP ) . We found that fluorescence from the cationic aluminum phthalocyanine, a red-region fluorescence probe, was quenched significantly in acidic media in the presence of low concentrations of anionic mucopolysaccharide heparin ( HP) bearing anionic sulfonic acid groups, because of induced aggregation. The practically non-fluorescent substrate degraded into small molecular fragments upon the hydrolysis of lysozyme, and thus the phthalocyanine molecules aggregated in HP were released, resulting in significant fluorescence recovery in the reaction system. This phenomenon forms the foundation of the proposed method. The reaction mechanism was determined using fluorescence spectroscopy and fluorescence anisotropy techniques. Factors that affected the determination were investigated. Under optimal conditions, the linear range was 0. 2-2 mg/L, and the detection limit was 0. 015 mg/L. The developed method is easy to operate and has good selectivity and sensitivity. This method was used in the analysis of practical samples of lysozyme, and the results were in agreement with those determined by a conventional turbidimetric method.

OBJECTIVE: To study the mechanism and clinical significance of specific immunotherapy (SIT) on the expression changes of GM-CSF and IL-5 in the tissue samples of recurrent nasal polyps. METHOD: Perennial allergic rhinitis patients with recurrent nasal polyps were randomly divided into 2 groups. The experimental group of 19 patients was treated by SIT and standardized treatment (glucocorticoid nasal spray) , and the control group of 17 patients was only treated by standardized treatment (glucocorticoid nasal spray). We measured the expression levels of GM-CSF and IL-5 in the tissue samples of the nasal polyps by ELISA, and compared the results obtained before treatment with expression levels detected at 6 months and 1 year after the treatment. RESULT: The expression of GM-CSF and IL-5 in the recurrent nasal polyps reduced significantly (P < 0.05) in both groups after 6 months and 1 year post-treatment compared with pre-treatment, and the expression of GM-CSF and IL-5 in the experimental group was much lower than that of the control group. CONCLUSION SIT decreases the expression of GM-CSF and IL-5 and reduces the inflammatory reaction in the tissue samples of recurrent nasal polyps.
Enzyme-Linked Immunosorbent Assay ; Granulocyte-Macrophage Colony-Stimulating Factor ; metabolism ; Humans ; Immunotherapy ; Inflammation ; drug therapy ; Interleukin-5 ; metabolism ; Nasal Mucosa ; pathology ; Nasal Polyps ; drug therapy ; metabolism ; Rhinitis, Allergic, Perennial ; drug therapy ; metabolism

Objective To observe the changes of serum superoxide dismutase (SOD) levels in typeⅡdiabetic patients with peripheral arterial disease (PAD) before and after interventional therapy, and to investigate the effects of oxidative stress level and interventional treatment on serum SOD level. Methods During the period from July 2011 to December 2012 at authors’ hospital, a total of 40 patients with type Ⅱ angiography together with balloon dilation and/or stenting was carried out in 24 patients (group B, with Fontaine stage of Ⅱb - Ⅲ). Of the 24 patients in group B, lower limb arterial angiography together with balloon dilation was employed in 16 (group B1) and lower limb arterial angiography together with balloon dilation and stenting was adopted in 8 (group B2). Twenty healthy clinical subjects were used as control group (group C). Before interventional treatment, elbow venous blood samples of patients in group A and B were collected to determine serum lipid, HbA1c and SOD levels. The same tests were also carried out in the subjects of group C. During percutaneous lower extremity arterial intervention , through arterial sheath 3 ml arterial blood specimen was collected in all patients of both group A and B before intervention started. Twenty-four hours after the treatment, venous blood specimen was also collected in all patients to determine serum SOD levels. The results were statistically analyzed. Results Lower limb arterial angiography showed that no obvious arterial stenosis was seen in the patients of group A. The interventional procedures were all successfully completed in all patients of group B. SOD levels of group A, B and C were (46.1 ± 3.13)U/ml, (35.37 ± 3.58)U/ml and (60.50 ± 6.99)U/ml respectively. SOD levels of both group A and B were significantly lower than that of group C (t = 8.420, P < 0.01; t = 14.324, P < 0.01). The level of SOD in group A was significantly higher than that in group B (t = 10.092, P < 0.01). The ankle-brachium indexes (ABI) of group A, B and C were (0.70 ± 0.12), (0.58 ± 0.13) and (1.15 ± 0.07) respectively. ABI of group A and B was significantly lower than that of group C (t = 14.324, P < 0.01; t = 17.392, P < 0.01). ABI of group B was significantly lower than that of group A (t=3.027, P<0.05). SOD level bore a negative correlation with HbA1c level (r=-0.541, P<0.01). In both group A and group B, no significant difference in SOD level existed between the venous blood and arterial blood. The preoperative arterial SOD levels in group B1 and group B2 were (35.70 ± 3.04)U/ml, and (36.07 ± 2.14)U/ml respectively, and the difference between the two groups was not statistically significant. The preoperative SOD levels in the ischemic arterial region in group B1 and group B2 were (32.95 ± 3.52)U/ml and (33.59 ± 2.64)U/ml respectively, and the difference between the two groups was not statistically significant although these levels were significantly lower than the preoperative arterial SOD levels(t=2.741, P<0.05; t=2.704, P<0.05). After the interventional treatment, the SOD levels in the ischemic arterial region in group B1 and group B2 were (29.40 ± 5.49)U/ml and (26.68 ± 2.31)U/ml respectively, and the difference between the two groups was not statistically significant although these levels were significantly lower than the preoperative SOD levels in the ischemic arterial region (t = 2.536, P < 0.05; t = 5.005, P < 0.01). No statistically significant differences in SOD levels at each corresponding site existed between group B1 and group B2. Conclusion No significant difference in SOD level exists between the venous blood and the arterial blood. Serum SOD level carries a negative linear correlation with HbA1c level. Before interventional treatment , the SOD level in ischemic region is low, which becomes lower after the interventional procedure, which may be caused by the enhanced oxidative stress reaction that is resulted from the damage of the vascular wall due to interventional manipulations. The enhanced oxidative stress reaction may play an important role in the occurrence of restenosis.

In order to study the constituents and pharmacology of Tripterygium plants (Tripterygium willfordii Hook.f), a variety of chromatography methods were used. Four compounds were isolated from Tripterygium plant and their structures were elucidated by UV, IR, MS, HR-MS, 1H NMR, 13C NMR and 2D-NMR techniques. The isolated compounds were named as triptonide (1), neo-triptetraolide (2), 2alpha-hydroxytriptonide (3), and 15-hydroxytriptonide (4), separately. Compounds 3, 4 belong to new diterpenoids, which can inhibit the growth of K562 cells (leukemia cells) and HL60 cells (acute myeloid leukemia cells).

Objective To investigate the effect and mechanism of murine bone marrow mesenchymal stem cells(BM-MSCs)transplantation on B-cell activating factor(BAFF)expression and B cell activation of MRL/Ipr mice.Methods Eighteen female MRL/Ipr mice were divided into the treatment group and the control group.Five female BAL B/C mice were used as negative controls.At the age of 18 weeks,the treatment group was transplanted with 1×10~6 murine BM-MSCs through vena caudalis,the control group was treated with 0.5ml sodium chloride.Enzyme linked immunoserbent assay(ELISA)was used to measure the level of the BAFF,IFN-γ,IL-2 and IL-10 in the serum.The percentage and numbers of Marginal zone,T1 and T2 B cells in spleen were detected by flow cytometry.Results①Eight weeks after transplantation,the level of BAFF [(32±14)ng/ml]in serum of the treatment group decreased significantly than the control group[(47±13)ng/ml](P＜0.05)as well as the level of serum IL- 10,IFN-γ and IL-2 levels[(19±7)vs(40±13)pg/ml](P＜0.01)[(25±20)pg/ml vs(38±25)pg/ml][(73±10)pg/ml vs(80±15)pg/ml].② Eight weeks after trans-plantation,the mice in the treatment group had lower percentages of marginal zone B cells[(15±4)% vs (21±5)%],and the numbers of marginal zone B cells were significantly decreased in the treatment group as compared with the control group[(9±6)×10~6 vs(19±10)×10~6,P＜0.05].③ Eight weeks after transplantation,the mice in the treatment group had lower percentages of T1 and T2 B cells[(3.4±2.1)% vs(7.3±4.0)%][(2.6+1.4)%vs(4.8±2.7)%],and the numbers of T1[(2.7±1.7)×10~6 vs(5.1±2.0)×10~6,P＜0.05]and T2 B cells[(2.0±1.2)×10~6 vs(3.7±1.7)×10~6,P＜0.05]were both significantly decreased in the treatment group as compared with the control group.Conclusion BM-MSCs transplantation decreases the expression of BAFF in association with the diminished production of the pathogenic cytokines IFN-γ and IL-10.Inhibition of BAFF also results in decreased numbers of T1 and T2 B cells and MZ B cells.

BACKGROUND: Hemorrhagic cystitis remains a common complication of hematopoietlc stem cell transplantation.Granulocyte-macrophage colony stimulating factor (GM-CSF) affects proliferation and differentiation of hematopoietic stem/progenitor cells, adjusts functions of monocytes, granulocytes, lymphocytes and endothelial cells.OBJECTIVE: To investigate the protective effects of GM-CSF bladder irrigation in hemorrhagic cystitis after allogeneic hematopoietic stem call transplantation.DESIGN: Case analysis.PARTICIPANTS: A total of 15 hematopathy patients undergoing allogenic hematopoietic stem cell transplantation at the Zhongshan Hospital of Sun Yat-sen University from January 2004 to August 2006 (routine treatment group). A total of 16 hematopathy patients undergoing allogenic hematopoietic stem cell transplantation from September 2006 to December 2008 (GM-CSF group).METHODS: In the routine treatment group, patients received mesna, hydration, alkalization and forced diuresis in the prevention of hemorrhagic cystitis. In the GM-CSF group, GM-CSF was infused into the bladder in addition to mesna,hydration, alkalization and forced diuresis in the prevention of hemorrhagic cystitis 24 hours before cyclophosphamide treatment. Catheter was extracted 3 days following cyclophosphamide withdraw. Following washing with saline, the bladder was emptied. 10 mL of saline and 5 mL of lidocaine were added into 300 μg of GM-CSF. The mixture was infused into the bladder for 60-120 minutes.MAIN OUTCOME MEASURES: The following parameters were measured: occurrence of hemorrhagic cystitis and its correlation to graft versus host disease, as well as the occurrence of cytomegalovirus infection and urinary system infection.RESULTS: Compared with routine treatment group, the occurrence rate of hemorrhagic cystitis was significantly decreased in the GM-CSF group (x2=4.39, P < 0.05), mean duration of hemorrhagic cystitis and duration of hospitalization were significantly shortened (t=3.97, P < 0.05; t=3.13, P < 0.05), and the occurrence rate of over grade HI hemorrhagic cystitis was significantly reduced (x2=5.04, P < 0.05). Cystitis degree was associated with degree and duration of graft-versus-host disease (r = 0.76).Compared with the routine treatment group, cytomegalovirus infection rate was slightly decreased in the GM-CSF group (x2=0.28, P> 0.05), and occurrence rate of over grade Ⅲ hemorrhagic cystitis was higher in patients with cytomegalovirus infection.Compared with the routine treatment group, the occurrence rate of urinary system infection was slightly reduced in the GM-CSF group (x2=0.28, P > 0.05).CONCLUSION: GM-CSF bladder irrigation is well tolerated and often effective, and should be considered as a preparative regimen of hemorrhagic cystitis after allogeneic hematopoietic stem call transplantation.

Objective To study the constituents in Melastoma dodecandrum.Methods The constituents were isolated by chromatographic methods,and their structures were elucidated by spectroscopic evidences.Results Five compounds were purified and their structures were identified as: daucosterol(Ⅰ),oleanolic acid(Ⅱ),avicularin(Ⅲ),3,7,4′-trimethoxyquercetin(Ⅳ),and atractylenolidone(Ⅴ).Conclusion Compound Ⅴ is a new chemical constituent named atractylenolidone.Compound Ⅳ is isolated from M.dodecandrum for the first time.

According to the talented persons development project to the clinical medical profession promulgated by the university in 2005,we have been taking great effort on the reformation of the course system,the teaching content,method and the teaching form for organic chemistry experiment,and we compiled the new experimental teaching material of organic chemistry which has been published in the university.From the teaching practice of the class of clinical medical profession of 2005,we have obtained satisfatory teaching result.