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 .

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.

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.

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 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.

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

Objective:To explore the mental health change among college freshmen,taking the age of late 1980,early 1990 and 1995 as the Qividing years.Method:We randomly selected 300 participants (total 900) in each period from the 2006-2015 year coollege freshman newborn psychological assessment data in a university in Xi'an.The data was analyzed by T-test and variance analysis.Results:There were significant differences among gender,family structure and the local institution in both China college students mental health scale (CCMHS) and college students' Psychological Adaptation (CCSAS).The level of mental health and psychological adaptation of college students after 95 is better than the students at the end of 80 and beginning of 90.Conclusion:College students' mental health and psychological adaptation level showed a trend of rising.But it still needs to carry out sexual mental health knowledge lecturer aiming at the existence of psychosexual disorder,continue to strengthen the newborn adaptability education and activities,establish required course of mental health and popularize mental health knowledge.

Objective:To observe the clinical treatment effect of Ginkgo mihuan oral liquid combined with tinnitus-curing instrument on the patients with sudden deafness associated with tinnitus.Methods: One hundred and twenty patients with sudden deafness associated with tinnitus were randomly divided into treatment group and control group one and control group two. Treatment group were treated with Ginkgo mihuan oral liquid combined with Tinnitus-curing instrument. The patients in control group were given Ginkgo mihuan oral liquid, the other control group used tinnitus-curing instrument. Observe the tinnitus and hearing improved progress.Results: In treatment group, the effective rate of tinnitus improvement was higher than that in control group, the differences were statistically significant(x2=7.040,x2=5.952;P<0.05), but the effective rate of hearing improvement was not higher than that in control group, the differences was not statistically significant(x2=0.621,x2=2.813;P<0.05).Conclusion: Ginkgo mihuan oral liquid combined with Tinnitus-curing instrument has certain curative effect on tinnitus recovery of patients with sudden hearing loss.

Lung ultrasound(LUS)has gained increasing popularity among intensivists in recent dec-ades.Although limited by the presence of air,LUS has proved to be useful in the evaluation of a number of different acute and chronic conditions,such as pneumonia,pneumothorax,acute lung injury,alveolar-intersti-tial syndrome,pleural effusion,etc,and showed a relatively higher sensitivity,specificity and diagnostic accu-racy compared to routine radiographic imaging.It is also critical in improving the safety of pleural interven-tional procedures.The most common signs for diagnosing and differential diagnosing include the pleural line, lung sliding,the A-line,the quad sign,the sinusoid sign,the fractal,and tissue-like sign,the B-line,lung rock-ets,abolished lung sliding with the barcode sign,the lung point,the dynamic air bronchogram,etc.The BLUE-protocol allows differential diagnosis of acute respiratory failure.LUS is a feasible technique that can be used routinely and integrated into clinical practice in the fields of intensive care,emergency care,respirato-ry and general medicine.