The academic thought of preventing possoble disease is one of the important part of the theoretical system of Chinese medicine. In Pro. WEI Pin-kang's opinion, we must identify the possible diseases prior to preventing it. The article discusses how to identify the possible disease from three aspects, such as indentifying constitution, comprehensive analysis by the four examination methods, drawing assistance from micro-indexex, which to cultivate young physicians' clinical thinking of indentifying possible disease.

Objective To study the effects of calcium dobesilate plus laser on serum vascular endothelial growth factor ( VEGF ) and insulin-like growth factor-1 ( IGF-1 ) in patients with diabetic retinopathy .Methods 82 patients(93 eyes) were randomly divided into two groups ,the control group(n=41 cases,46 eyes) and the obser-vation group(n=41 cases,47 eyes).The control group was treated through laser ,while the observation group was treated through laser plus calcium dobesilate .Serum VEGF and IGF-1 were measured before and after treatment . Results Before treatment,visual acuity had no significant difference between the two groups (t=0.601,P>0.05). After treatment,visual acuity was improved in 30 eyes in the control group with improving rate of 65.2%,visual acuity improved in 38 eyes in the observation group with improving rate of 80.9%.The improving rate of visual acuity in the observation group was significantly higher than that of the control group (χ2 =6.92,P<0.05).The total effective rate of the control group was 73.9%,which was significantly lower than 87.2%in the observation group (χ2 =9.28,P<0.05). Serum VEGF and IGF-1 had no significant differences before and after treatment in the control group ( t=0.613, 0.496,all P>0.05).After treatment,serum VEGF and IGF-1 in the observation group were (91.4 ±25.1)ng/L and (121.6 ±21.7)mg/L,which were significantly lower than those before treatment (t=3.721,5.992,all P<0.05). Conclusion Calcium dobesilate plus laser can significantly decrease serum VEGF and IGF-1 in patients with diabet-ic retinopathy .

Case Method is useful to helping the teacher teach students the knowledge of gynecological diseases and train their capability of clinical thought. The key of the Case Method is choosing the cases and designing teaching steps carefully.

Objective To compare compound staining of Alizarin red S and Alcian blue showing ossified skeletal structures and cartilage in fetal,neonatal and adult rat. Methods All specimens were skinned and fat tissue removed completely and eviscerated,then fixed in 95% ethanol;Acetone was used remove fats; 0.1% Alizarin red S and 0.15%-0.3% Alcian blue were used in ossified bone and cartilage;Differentiation and clearing in 0.5%-2% aqueous KOH. Results Ossified bones showed rose red;cartilage showed blue;the others were transparent.Conclusion The best results of Alizarin red S and Alician blue compound staining could be obtained in all rat skinned,eviscerated,and removed the adipose tissues.

BackgroundRetinal pigment epithelial (RPE)cell senescence damage the metabolism of photoreceptor,leading to retinal dysfunction and loss of vision.To understand RPE cell senescence mechanism will contribute to the study of age-related macular degeneration ( AMD).ObjectiveThe present study was to prepare the ageing RPE cell model with passage and explore its potential mechanisms.MethodsThis study was approved by the Ethic Committee of Qingdao University Medical College,and the informed consent was obtained from each gravida.Six human eyeballs were obtained from artificial labor fetusl with the gestational age 16-28 weeks.RPE cells were isolated,cultured and passaged in vitro to establish the cell replicative aging model.The third to twelfth cells were collected to be used to this experiment.Human keratin was used to identify the cells by immunochemistry,and MTT method was utilized to assess the proliferation and viability of different generations of cells as the A490 value.The cellular cycles and transmembrane potential (△ψm)of mitochondrion (△ψm) with passage were detected and compared using Flow Cytometry. Results Cultured and passaged cells showed the hexagon in shape with the melanin in 1-2 generations of cells and presented with the brown staining in cytoplasm for human keratin.The melanin was absent in the third generation cells.Vibrant growth statues were seen from the 3-6 generations cells and thereafter the proliferation ability reduced.The cells of G0/G1 phase were gradually elevated with the passage from 3 - 12 generations with a percentage of 68.40％ in the third generation of cells to 87.33％ in the twelfth generation of cells,showing a significant difference among various generations ( F =180.43,P =0.00),and that of the sixth,ninth and twelfth generation of cells was significant higher than the third,sixth and ninth generation respectively (t =4.002,P＜0.05 ; t=12.885,P＜0.01 ;t=16.387,P＜0.01 ).MTT assay showed that of RPE cells were significantly declined with the passage ( F =38.77,P =0.00),and the A490 value of the ninth,twelfth generations of cells was considerably lower in comparison with sixth and ninth generation respectively ( t =5.991,11.983,P＜0.01 ).From 3 through 12 generations of cells,the staining intensity of rhodamine 123 was gradually decreased ( F =121.68,P =0.00 ),and the staining intensity in the sixth,ninth and twelfth generation of cells was significant lower than that the third,sixth and ninth generation respectively(t=6.918,7.620,11.207,P＜0.01 ).Conclusions A replicative aging model can be successfully created by the passage in vitro using human fetal RPE cells.The reduce of transmembrane potential and damage of mitochondria might be one of mechanisms of senescence of RPE cells.

Objective To analyze the diagnose and treatment of drug-induced hypersensitivity syndrome (DIHS) in children.MethodsThe clinical data from one case of highly suspected DIHS were retrospectively analyzed. The related literatures were reviewed.ResultsA 22-month-old male child with severe pneumonia, after treated with vancomycin, suffered with high fever and skin rash combined with hepatic lesion and hematological system disorder. After withdrawal of vancomycin and then treatment with the combination of high-dose methylprednisolone and intravenous immunoglobulin, the clinical symptoms were gradually relieved in 24 hours. The child was improved and discharged on 17th day.ConclusionThe child has the characteristics of DIHS which is highly suspected to be caused by vancomycin.

Objective:To compare the clinical and imaging characteristics between central nervous system vasculitis(CNSV)and mitochondrial encephalomyopathy(ME),so as to analyze the differential diagnosis of the two disorders.Methods:Clinical data on seven patients with CNSV and five with ME were retrospectively analyzed.The clinical manifestations,laboratory parameters,imaging features and histological characteristics were compared to screen for the evidence of their differential diagnosis.Results:The MRI results of both CNSV patients and ME patients(MELAS type)showed a multi-lesion pattern.The symptoms of CNSV patients included headache,limbs weakness,and erythrocyte sedimentation rate(ESR)increase.The symptoms of MELAS patients included epilepsy and increased serum lactic acid.The electroencephalographic manifestations of both diseases were abnormal:CNSV patients mainly had diffused lesions accompanied with limited alterations;ME patients had evidence of epileptic discharge,which was consistent with the clinical symptoms.Conclusion:Clinical manifestations of CNSV and ME patients are more valuable than imaging findings in the diagnosis of the two diseases.CNSV is characterized by vascular disorders and inflammatory reactions;ME is characterized by abnormal energy metabolism and severe damage of gray matter.The final diagnosis should depend on laboratory and histological examinations.

The enzyme,as a biocatalyst,can not be surpassed in speeding up the reactions by other common chemical catalysts under the suitable conditions and can catalyze the reaction mildly,simplify the facilities needed,improve the work conditions,and reduce the production costs,etc.Those are its advantages mentioned above.But while the enzyme is extracted outside the cells,the molecular conformation may be changed with decreasing its bioactivity and stability seriously.As one type of physical energy,(ultrasonic) wave with lower intensity and suitable frequency can make the conformation of enzymatic molecular comformation transform positively and the transforming reactions accelerate so as to facilitate the effective constituents of Chinese materia medica and natural products transforming.

Objective To research the correlation between SOD and TXB2/6-k-PGF1? and relationship with TCM syndrome in stroke patients. Methods A contrast test on blood SOD and plasma TXB2 and 6-k-PGF1? was given separately to two groups, one group was 74 cases with stroke and the control group was 36 cases in health. Results Content of b1ood SOD in stroke group reduced remarkably compared with the health group (P

BACKGROUND: Drug therapy can improve the clinical symptoms and extend the gestational age through the maternal way to treat intrahepatic cholestasis of pregnancy (ICP), however, fetal hypoxia and meconium-stained amniotic fluid can not clearly improved. OBJECTIVE: To explore the effect of replacement of amniotic fluid that contains high concentrations of bile acids by artificial amniotic fluid through amniocentesis in the rat model of ICP. DESIGN, TIME AND SETTING: Random control animal experiments were completed in the Laboratory (first-degree laboratory) of Animal Experimental Center in Chongqing Medical University from March to September 2008. MATERIALS: Forty SD pregnant rats with 15 days of pregnancy were randomly divided into intracavitary injection of S-Adenosyl-L-methionine (SAMe) (IUS), intracavitary injection of sodium chloride (IUN), intravenous injection of SAMe (IVS) and blank control (IC) groups, with 10 rats in each group. METHODS: On day 15 of pregnancy, ICP rat models were induced by daily injection of estradiol benzoate. On day 17 of pregnancy, 1 mg SAMe and 0.3 mL sodium chloride were injected into amniotic cavity of in the IUS and IUN groups through amniocentasis. Meanwhile, 30 mg SAMe were injected though tail veins in IVS group. No treatment was performed in the IC group. MAIN OUTCOME MEASURES: The meconium-stained amniotic fluid rate and the still birth rate were calculated. Total bile acid (TBA) level in amniotic fluid was measured. In addition, the expression of hypoxia-inducible factor 1 ?(HIF-1?) mRNA in the placenta of rats were examined by immunohistochemistry and reverse transcription PCR at the days 20 of pregnancy. RESULTS: The meconium-stained amniotic fluid rate in the experimental group was lower than that of the IC group (P