Objective:To analyze the differences and common differential diagnostic value on the fourth ventricle magic resonance imaging (MRI) findings of primary tumors, diffusion-weighted imaging (DWI) and minimum apparent diffusion coefficient (ADC).Methods:A total 100 cases with the fourth ventricle of the primary tumor who were given MRI examination, were selected from March 2011 to April 2012 in our hospital, recording an average minimum ADC value of tumor parenchyma.Results: 43 cases of medulloblastoma showed cerebellar hemisphere pressed shift or tonsillar herniation and restricted diffusion on DWI tumors showed high signal tumor. The minimum ADC value was (0.43±0.15)×10-3mm2/s. 33 cases of astrocytomas showed significant mass effect and the minimum ADC value was (1.58±0.58)×10-3mm2/s. 24 cases of ependymoma MRI showed typical “melting wa×” degeneration and tumor minimum ADC value was(0.93±0.18)×10-3mm2/s. The minimum ADC value of the three different forms of tumor cell lines was calculated by variance test and twenty-two row-LSD-t test, and the results were statistically significant difference (F=21.985,P=0.001). DWI high signal is limited to an average minimum ADC value of 0.875×10-3mm2/s as a threshold value. Compared with the pathology, the specificity of the fourth ventricle medulloblastoma was 98.5%, the sensitivity was 97.3%, the negative predictive value was 98.5%, and a positive predictive value was 100%. The suppression test was carried out between all the results above and the results of histological findings and Kappa value was 0.912.Conclusion: The primary tumor of the fourth ventricle was diagnosed with the ADC, DWI and conventional MRI, which showed that the specificity, sensitivity, negative predictive value and positive predictive value were high. It had obvious diagnostic effect and great value.

Objective To evaluate the existence of basic fibroblast growth factor(bFGF) and transforming growth factor-beta(TGF-?)in the sclera in different fetal ages by real-time polymerase chain reaction(PCR). Methods Forty human fetal eyes ranging in age from 12 to 20 pregnant weeks were carefully extracted.The sclera was carefully dissected.The expressions of bFGFand TGF-? were determined by real-time PCR,and the results were analyzed comparatively. Results bFGF was expressed in the highest amount at the 12th to 14th pregnant week and decreased thereafter,while the expression of TGF-? lowered at the 12th week and increased gradually.Conclusion bFGF and TGF-? express in the sclera of the human fetal eyes during the whole period of the fetal development and changed with fetal ages.

Acute Coronary Syndrome ; drug therapy ; Aspirin ; adverse effects ; therapeutic use ; Fibrinolytic Agents ; adverse effects ; therapeutic use ; Hemorrhage ; chemically induced ; prevention & control ; Humans

Aspirin ; administration & dosage ; Cardiovascular Diseases ; prevention & control ; Humans ; Primary Prevention ; trends

Congenital Abnormalities ; economics ; prevention & control ; Cost Control ; Humans ; Public Health Practice ; economics

Objective To observe the protective effect of grape seed proanthocyanidin extract ( GSPE) on learning disabilities after radiation injury brain in rats.Methods 120 male Wistar rats were divided into control group,model group,high and low dose GSPE groups.The radiation injury brain models were established using a method of linear accelerator irradiation in 22 Gy.The morphological changes of neu-rons in hippocampus were observed with HE staining; the expression of phosphorylated extracellular signal regulated kinase 1/2 ( ERK1/2) and growth associated protein-43( GAP-43) were detected by immunohisto-chemistry;the contents of malonalde hyde(MDA) and superoxide dismutase(SOD) were measured respec-tively by thiobarbituric acid( TBA) and xanthine oxidation( XTO) methods;the learning ability was assessed with shuttle box.Results Compared with the model group,the GSPE groups showed a decreased degree of nerve cell morphological injury; and increased ERK1/2 activities((13.20±1.45)/view,(27.40±2.52)/view,(19.80±1.30)/view),GAP-43 expression level((52.93±2.07)/view,(66.50±0.77)/view,(73.05± 2.40)/view) and SOD activities((79.82±5.26) U/mg,(76.20±6.86) U/mg,(80.12±5.76) U/mg)(P<0.05);and decreased the contents of MDA((71.62±1.88) μmol/g,(76.41±1.94) μmol/g,(72.32±1.98)μmol/g)(P<0.05).Shuttle box testing showed that the active avoidance reaction rate was increased(7 d:(56.23±2.56)%;14 d:(44.66±2.79)%;28 d:(50.40±2.16)%)(P<0.05)and passive avoidance latency was shorted(7 d:(34.11±1.57)s;14 d:(45.52±1.88)s;28 d:( 39.52±1.79)s)(P<0.05) in GSPE groups. The above mentioned changes were more significant in high dose of GSPE(P<0.05) .Conclusion GSPE has protective effect on learning disabilities of radiation injuries brain,which is related to enhance ERK1/2 activ-ity and the expression of GAP-43.

Objective To assess the value of ultrasonic elastography in the diagnosis of special type breast cancers. Methods Routine ultrasonograms, color Doppler flow images and elasticity images of 13 patients with special type breast cancer confirmed surgical pathologically were retrospectively analyzed. Results The score of mucinous carcinoma, inflammatory breast cancer (1 patient), lactation breast cancer, invasive micropapillary carcinoma, tubular carcinoma and invasive lobular carcinoma (2 patients) were 4-5. The score of 1 patient of invasive lobular carcinoma was 1 and 1 patient of lactation breast cancer was 3. The characteristics of color Doppler flow imaging of majority patients were varies, while no obvious lesion was observed in Paget's disease. Conclusion Ultrasonic elastography is helpful to the diagnosis of inflammatory breast cancer, lactation breast cancer, invasive micropapillary carcinoma of the breast, papillary carcinoma and tubular carcinoma of the breast. Early diagnosis of Paget's disease still depends on pathology.

Objective To observe the effect of grape seed proanthocyanidin extract (GSPE) on growth associated protein-43 (GAP-43) through extracellular signal regulated kinase 1/2 (ERK1/2) pathway in rats with brain radiation injury. Methods 72 3-month male Sprague-Dawley rats were divided into control group (n=18), model group (n=18), high dose GSPE group (n=18) and low dose GSPE group (n=18). The brain radiation injury models were established by linear accelerator irradiation with 22 Gy. The learning ability was assessed with shuttle box. The morphological changes of neurons in hippocampus were observed with HE staining;the expression of GAP-43 was de-tected by RT-PCR; and the expression of phosphorylated ERK1/2 was detected by Western blotting. Results Compared with the model group, the active avoidance reaction rate in the shuttle box test increased and the passive avoidance latency shortened in GSPE groups (P<0.001); the nerve cell morphological injury reduced and the expression of GAP-43 mRNA and phosphorylated ERK1/2 increased in the GSPE groups (P<0.001), especially in the high dose GSPE group (P<0.001). The GAP-43 mRNA level positively correlated with phosphory-lated ERK1/2 level in the model group (r=0.764, P<0.001), the low dose GSPE group (r=0.814, P<0.001) and the high dose GSPE group (r=0.822, P<0.001). Conclusion GSPE could promote the expression of GAP-43 through ERK1/2 pathway in rats, and prevent the brain from radiation injury.

Retinal ischemia is a common cause of blindness and visual impairment.Some eye diseases,such as glaucoma,retinal artery occlusion and diabetic retinopathy,are associated with retinal ischemia.It is very important to build an ideal animal model which can imitate human retinal ischemia disease for investigating the pathological mechanism and treatment of retinal ischemia.Rodent is a popular choice for retinal ischemia model due to its availability and the similarity to human retinal blood supply.To provide a supportive evidence of retinal ischemia research,some literature concerning rodent models is reviewed and various methods to build the model are summarized,such as elevated intraocular pressure,optic nerve ligation,ligation of vessels,photo-chemistry,endothelin-1 injection and middle cerebral artery occlusion intraluminal suture,etc.Here,the specific protocols,the pathological changes and molecular mechanism of each model are reviewed.

ObjectiveTo understand dangerous factors causing child cerebral palsy and try to diagnose and treat cerebral palsy early, and decrease the ratio of cripple.MethodsTo analyze if the occurrence, style or complication of cerebral palsy having a relation to dangerous factors such as sexes, birth weight, premature delivery, twins, neonatal asphyxia, infection of newborn, nuclear icterus, mother's age, virus infection in the duration of pregnancy, threatened abortion and family history of cerebral palsy.ResultsThe ration of male and female is 1.47∶1 in 146 cases of child cerebral palsy. Factors causing cerebral palsy are low birth weight (79.45%), premature delivery (64.38%), neonatal asphyxia (41.78%), threatened abortion (32.89%), twins (31.53%), infection of newborn (12.33%), nuclear icterus (6.16%), parturient with advanced age (3.42%), having infection history in the duration of pregnancy (2.74%), and family history of cerebral palsy (0.68%). Both styles and complications of cerebral palsy have a relation to dangerous factors.ConclusionsThe low birth weight, premature delivery, neonatal asphyxia, twins and threatened abortion all are higher dangerous factors causing child cerebral palsy. In order to abstain the occurrence of these dangerous factors, it is important to educate people and doctors recognizing all dangerous factors. It is also helpful to lower the ratio of cripple that regularly examining child with dangerous factors, discovering symptoms and complications of cerebral palsy in time, and diagnosing and treating cerebral palsy as soon as possible.