Through the research and practice of computer basic course at medical colleges, the paper summarizes the experience of using modern technical means, to reform the traditional teaching ideas, teaching methods, teaching means and teaching management, to diversify teaching resources sharing. It also analyzes the shortcomings and makes recommendations to further strengthen the course development.

Objective To improve the descriptions of health information network resources by analyzing the influen-cing factors of information retrieval.Methods The top 10 papers retrieved on 12 Websites in Chinese and English engines according their titles, keywords and descriptions in the HEAD file of HTML source code with 5 biomedical hot words as the search terms were comparatively analyzed and scored.Results The score of Websites in Chinese and English engines was higher than that of medical and health information network, the score of Chinese network information resources was higher than that of English network information resources .Conclusion The current de-scription of network health information resources is poor .Only by strengthening health information network con-struction and improving the description of health information resources , can more accurate health information be provided for the users.

Objective To evaluate the relationship of biological status of HPV 16 and expression of L1 protein with the degree of cervical tumorigenesis.Methods Sixty-one patients with cervical lessions were enrolled and divided into five groups according to pathology of cervical lesions,including chronic cervicitis(n = 27),cervical intraepithelial neoplasia(CIN) Ⅰ-Ⅱ(n = 10),carcinoma in situ(n = 8),early-stage(n =7)and mid/late-stage(n = 9)of cervical carcinoma.HPV type and its biological status were detected by PCR amplification,and L1 protein in HPV 16 positive tissues was detected by Western blot.Kruskal-Wallis was used to compare between the groups,and Pearson correlation analysis was used to evaluate the relationship of HPV biological status and L1 protain expression with cervical lesions.ResultsFifty-three out of 61 patients with cervical lesions were detected with HPV positive(86.9%).All 25 patients with chronic cervicitis were in HPV free mode; in CIN Ⅰ-Ⅱ group,6 patients were in free and 2 in integral mode; in carcinoma in situ group,1 patient in free,3 in mixed and 3 in integral mode; in the early-stage cervical cancer group,2 patients in mixed and 4 in integral mode; in mid/late-stage cancer group,1 patient in mixed and 6 in integral mode.A strong positive correlation was found between the HPV in integral mode and the severity of cervical lesions(r = 0.705,P ＜0.01).The expression of L1 protein was negatively correlated with the aggravation of cervical lesions in HPV 16-positive patients(r = -0.755,P ＜0.01).Conclusion The integral mode of HPV16 and low expression of L1 protein may have predictive value for the severity of cervical lesions.

Objective: To study the effect of GuiFu capsule on sexual hormone and other relative factors in rats with endometriosis.Methods: Endometriosis was induced in rats by surgery of self-endometrium transplant.Rats with successful models were randomized into GuiFu capsule group and Danazol group.Expressions of ER,PR,VEGF and NK cells were examined by immunohistochemical stainin;the level of E2 and P was detected by radioimmunoassay.Results: GuiFu capsule can reduce the level of E2 and P in the blood of rats(P

Stroke is a hi-attack rate,hi-multilation rate and hi-death rate disease.More than 70 percent patients with stroke remain functional disturbance,which destroy their quality of life and bring them heavy burden.The early multidisciplinary rehabilitation treatment,rehabilitation care,family rehabilitation training and application of new technology are the major strategies in kinds of rehabilitation treatment on stroke patients.The clinical researches have showed that the effect of multidisciplinary rehabilitation treatment is obviously better than simple treatment.So these therapeutic regimens have wonderful prospect and valuable generalization.

As the number of patients with compromised immune function increases and fungal resistance develops, so does the risk of contracting deadly fungi in humans. Both fungi and humans are eukaryotes, so identifying unique targets for antifungal drug development is difficult. In addition, the existing antifungal drugs are limited by toxicity, drug interaction and drug resistance in practical application, which leads to the increasing incidence and fatal rate of fungal infections. Therefore, it is urgent to develop new antifungal drugs. The semi-synthetic technology using microbial fermentation products from natural sources as lead compounds has become the most used method in structural modification of antifungal drugs due to its advantages of few reaction steps and easy operation. This paper will introduce the current status of natural antifungal drugs in clinical use, as well as the latest progress in the research and development of new semi-synthetic antifungal drugs, and summarize their mechanism of action, structural modifications, advantages and disadvantages, so as to provide reference for the subsequent development of new antifungal drugs.

Objective To study the effect of fluorine on the bone histomorphometry of humbar in rats.Methods Ninety 2-month-old SPF Sparague-Dawley rats,half male and female,were randomly divided into 9 groups:control[(childhood(CS),adult(AS),long-time(NS)]group and drug group[childhood high-fluoride and low-fluoride group(CHS,CLS),adult high-fluoride and low-fluoride(AHS,ALS),long-term high-fluoride and low-fluoride(CLHS,CLLS)].The control group was administered orally with solution of 0.9%NaCl,while the drug group was given orally with different dose of NaF at the same time. Sections of the fifth lumbar were made which was undecalicified for bone histomorphometric analysis, including the percentage of trabecular bone area (% Tb.Ar),trabecular thickness(Tb.Th), trabecular number(Tb.N), trabecular separation(Th.Sp) ; broken trabecular bone area cells (Oc.N), osteoclast perimeter percentage (% Oc.Pm), the percentage of labeled perimeter (% L.Pm), bone mineral apposition rate(MAR), osteoblast perimeter(Ob.PM), trabecular bone perimeter formation rate (BFR/BS),trabecular bone area formation rate (BFR/BV), the total area of bone formation rate (BFR/TV). Results [1]The percentage of Tb.Ar, Tb.Th, Tb.N,%L.Pm, MAR, BFR/BS, BFR/BV and BFR/TV of CHS group [(50.63 ±7.44)%, (150.26 ± 27.51 )μm, (3.44 ± 0.47)N/mm, (50.63 ± 7.44)%, (0.85 ± 0.03)μm/d, (8.45 ± 2.36)μm/d ×100, (381.16 ± 41.62)%/year, (75.07 ± 4.81)%/year] was higher than that of CS group [(29.71 + 9.32)%,(110.93 ± 28.19)μm, (2.68 ± 0.34)N/mm, (24.00 ± 1.22)%, (0.65 ± 0.03)μm/d, (5.43 ± 0.18)μm/d × 100,(141.32 ± 9.29)%/year, (58.14 ± 2.3)%/year, all P < 0.05)]. The %Tb.Ar, Tb.Th, %L.Pm, MAR, BFR/BS,BFR/BV, BFR/TV and Ob.PM of CLS group [(40.76 ± 6.43)%, (164.25 ± 45.65)μm, (42.02 ± 6.12)%, (0.85 ±0.04)μm/d, (8.95 ± 3.73)μm/d × 100, (378.73 ± 35.39)%/year, (73.52 ± 8.71)%/year, (1.41 ± 0.05)μm] were increased (all P < 0.05). [2]Compared with AS group, the %Tb.Ar,Oc.N, %Oc.Pm, %L.Pm, MAR, BFR/BS,BFR/BV and BFR/TV of AHS group[ (50.62 ± 5.76)%, (0.51 ± 0.05)N/mm, (1.13 ± 0.05)%, (42.3 ± 7.02)%,(1.28 ± 0.09)μm/d, (12.91 ± 1.52)μm/d × 100, (390.12 ± 43.56)%/year, (65.21 ± 22.13)%/year] was higher than that of AS group[ (42.73 ± 5.22)%, (0.41 ± 0.17)N/ram, (0.77 ± 0.52)%, (28.43 ± 6.93)%, (0.80 ± 0.03)μm/d, (9.83 ± 1.44)μm/d × 100, (324.43±53.44)%/year and(48.35 ± 9.36)%/year, all P < 0.05)] . The %Tb.At, Oc.N, %Oc.Pm, %L.Pm, MAR, BFR/BS, BFR/BV and BFR/TV of ALS group [(51.14 ± 6.22)%, (0.49 ±0.61)N/mm, (1.17 ± 0.11)%, (45.06 ± 6.92)%, (1.39 ± 0.08)μm/d, (12.87 ± 1.35)μm/d × 100, (394.6 ±50.23)%/year and(66.31 ± 18.93)%/year] were higher than that of AS group(P < 0.05) .[3] The Ob.PM ,Oc.N and %Oc.Pm of CLHS group[ (1.47 ± 0.27)μm, (0.58 ± 0.13)N/mm, (1.14 ± 0.07)%] were obviously increased(P <0.05), as compared with NS group [ (0.82 ± 1.20)μm, (0.42 ± 0.25)N/mm and (0.75 ± 0.64)%, all P < 0.05].Conclusions The short-term administration of NaF on rats in the growing period increases the bone formation and osteoblast activities of young rats and adult rats. The long-term administration of NaF on rats does not increase the bone formation of rats in growth period. The osteoblast activities as well as the bone absorption of lumbar vertebra were strengthened. The likelihood of bone fracture became larger. The negative effects on bone metabolism and bone quality of rats were gradually displayed along with the prolongation of sodium fluoride usage.

Objective To study the apoptosis of K562 cells induced by a new immunosuppressive agent FTY720 and its mechanism,and to provide experimental basis for the treatment of leukemia in clinic.Methods The K562 cells were cultured in vitro and divided into blank control group and FTY720 treatment group.The K562 cells in FTY720 treatment group were treated with 6μmol·L-1 FTY720 for 3,6,and 12 h,or treated with different concentrations of FTY720 (2,4,6,8μmol·L-1)for 24 h.The apoptosis,level of reactive oxygen species (ROS),mitochondrial membrane potential(MMP)and cell cycle were measured by flow cytometry.The inhibitory rate of proliferation of K562 cells after treated with FTY720 was detected by WST-1 reducting assay.Results The results of flow cytometry showed that the percentages of apoptotic cells were increased after treated with 6μmol·L-1 FTY720 for 3,6,and 12 h with the prolongation of time compared with blank control group(P<0.01).The percentages of apoptotic cells were also increased after treated with different concentrations of FTY720 for 24 h compared with blank control group(P<0.01).Compared with blank control group,the ROS levels were increased with the increasing of FTY720 concentration,while the MMP was decreased(P<0.01).Compared with blank control group,the percentage of cells at G0/G1 phase was increased,while those at S and G2/M phases were decreased with the increasing of FTY720 concentration (P<0.05).The WST-1 reduction assay results indicated that the inhibitory rates of proliferation of K562 cells after treated with 2,4,6,and 8μmol·L-1 FTY720 for 72 h were (24.0±4.1)%,(46.4±3.9)%,(67.0±4.8)%,and (88.2±5.6)%,respectively,compared with blank control group.The concentration of FTY720 to result the inhibitory rate of 50% (IC50 )on K562 cells was 5.5μmol·L-1 .Conclusion FTY720 could inhibit the proliferation of K562 cells by blocking cell cycle and inducing apoptosis through provoking ROS.

Objective To evaluate the feasibility and value of quantitatively assessing left ventricular systolic function in rats with myocardial infarction (MI) by myocardial contrast echocardiography (MCE) based on mathematical morphology algorithm.Methods SD rats model of MI were mede,then MCE were performed before MI and at 1,3 weeks after MI.In vitro study:based on the principle of binary morphology,segmentation of endocardium was acquired using dilation,erosion,closed operations and connected domain object tag-based.The automatic segmentation of endocardial contour was compared with the manual segmentation boundary.In vivo study:the left ventricular area was calculated using the software,and the area variation fraction (AVF),a new index of left ventricular systolic function,were acquired.The correlation between AVF and left ventricular ejection fraction (LVEF) was analyzed.The value of AVF for diagnosis for left ventricular dysfunction was evaluated by ROC curve.Results ① The cross-correlation coefficient (CCC) and percent error (PE) between automatic contours and manual boundary were more than 0.90 and less than 9％,respectively.② AVF correlated positively with LVEF (r =0.934,P ＜ 0.001).③ ROC analyses showed the area under curves for AVF diagnosing left ventricular dysfunction was 0.834.The best cutoff value was 27.5 ％ for diagnosing left ventricular dysfunction with the sensitivity of 85 ％ and specificity of 60 ％.Conclusions Left ventricular endocardium can be identificated automatically and rapidly by MCE based on mathematical morphology algorithm.AVF can assessed quantitatively left ventricular systolic function in rats with myocardial infarction.

Objective To evaluate the value of tissue Doppler imaging (TDI) in diagnosing pulmonary arterial hypertension(PAH) with common simple congenital heart disease(CHD).Methods 104 patients of CHD approved by operation or intervention were retrospectively analyzed.Both TDI and right cardiac catheterization were performed in all patients,whose were divided into PAH and non-PAH groups according to mean pulmonary arterial pressure (mPAP) on diagnostic right cardiac catheterization:60 PAH patients[mPAP ≥25 mmHg(1 mmHg =0.133 kPa) and pulmonary arterial capillary wedge pressure ≤15 mmHg],44 non-PAH patients (mPAP ＜25 mmHg).The PAH group was divided into mild (25 mmHg≤ mPAP≤35 mmHg),moderate (36 mmHg≤mPAP≤50 mmHg) and severe (mPAP＞50 mmHg) subgroups.The tricuspid annular systolic peak velocity (TS'),early diastolic peak velocity (TE'),late diastolic peak velocity (TA') were measured by TDI and TE'/TA' and Tei index were calculated.The correlation between TDI parameters and the cardiac catheterization findings (sPAP,mPAP and dPAP) were assessed.Results ①TS' and TE' in PAH group were significantly lower than those in non-PAH(P ＜ 0.05),but Tei in PAH group were significantly higher than that in non-PAH (P ＜0.001),however,there were no significant difference in TA' and TE'/TA' between two groups (P ＞ 0.05).②Tei correlated positively with pulmonary arterial pressure (P ＜0.001),TS' was found to be negatively correlated with pulmonary arterial pressure(P ＜0.05),but no correlation between TE',TA',TE'/TA' and pulmonary arterial pressure(P ＞0.05).③ROC analysis showed the area under curves for Tei index and TS' diagnosis for PAH was 0.893 and 0.699,respectively.At the cutoff of Tei＞0.49 and TS'＜16 cm/s for indicating PAH,the sensitivity were 86.67 ％ and 80.00％,respectively and the specificity were 79.55 ％ and 45.45 ％,respectively.④Tei in the moderate and severe PAH were significantly higher than that in mild PAH (P ＜ 0.05),TS' and TE' in severe PAH were significantly lower than those in mild and moderate PAH (P ＜ 0.05),At the cutoff of Tei＞0.55 for indicating moderate or severe PAH,the sensitivity and specificity were 95.24％ and 72.22％.Conclusions Tei index and TS' have high application value in assessing PAH and classification of PAH.Tei＞0.49 indicates PAH,while Tei＞0.55 suggests moderate or severe PAH.