Brain ; pathology ; Cerebrovascular Circulation ; Echoencephalography ; Humans ; Infant, Newborn ; Infant, Premature ; Leukomalacia, Periventricular ; diagnosis ; pathology ; physiopathology ; Magnetic Resonance Imaging ; Necrosis ; Spectroscopy, Near-Infrared ; Tomography, X-Ray Computed

Consumer Product Safety ; Food ; Food Safety ; Risk Assessment ; Safety Management ; methods

Asthma ; diagnosis ; Bronchitis ; diagnosis ; Child ; Diagnosis, Differential ; Humans

Total 2625 cases of pulmonary sequestration were collected from literatures of Chinese National Knowledge Infrastructure from 1998 to 2008. The age, gender, clinical symptoms, chest CT scan,chest X-ray findings, lesion location, supplying artery, venous reflux, and preoperative misdiagnosis of 2625 cases were retrospectively reviewed. The male: female ratio of all cases was 1.58: 1. The main clinical symptoms of pulmonary sequestration were cough, sputum, fever, hemoptysis and chest pain, but 13.36% patients were asymptomatic. Chest CT scan showed pulmonary massive lesions (49.00%), pulmonary cystic lesions (28.57%), pulmonary cystic-solid lesions ( 11.57% ), and flaky shadows (7.96%). Pulmonary sequestration mainly located in the lower lobe; 66. 43% located in the left posterior basal segments, and 20. 16% located in the right posterior basal segments. Pulmonary sequestrations were divided into three types, intralobar sequestration (83. 84% ), extralobar sequestration ( 16.03% ), and mixed sequestration (0.13% ). The arterial supply was mainly from branches of thoracic aorta (76. 55% ) and abdominal aorta (18.47%). The clinical manifestations of pulmonary sequestration were various, so the preoperative misdiagnosis rate was as high as (59 ± 20) %. We should take full advantage of clinical symptoms, imaging findings and location characteristics to improve the preoperative diagnosis rate.

BACKGROUND:MicroRNA has tissue and cel specificity, and high expression of endothelial cel-specific microRNA-126 (miR-126) plays an important role in angiogenesis.
OBJECTIVE:To explore the effect of miR-126 on transplanted free flap survival and histological activity as wel as its mechanism in angiogenesis.
METHODS:Transient transfection technology was used to enhance the expression of miR-126 in bone marrow mesenchymal stem cel s. Expression levels of macrophage inflammatory protein-1α, tumor necrosis factor-αand vascular cel adhesion molecule-1 mRNA were detected by real-time PCR, and expression levels of ERK1/2, AKT, pERK1/2, pAKT protein were measured by western blot assay. Forty-eight Sprague-Dawley rats were randomly divided into three groups (n=16 per group), fol owed by preparation of abdominal free flap models. Rats in the three groups were given injection of miR-126 mimics-transfected cel s, miR-126 mimics control-transfected cel s and PBS 1 cm and 3 cm distal to the free flap, respectively.
RESULTS AND CONCLUSION:Expression levels of macrophage inflammatory protein-1α, tumor necrosis factor-αand vascular cel adhesion molecule-1 mRNA in the cel s transfected with miR-126 mimics were decreased by 36, 3.5 and 14 times compared with those in the PBS group, respectively. Expressions levels of ERK1/2, AKT, pERK1/2, pAKT protein in the distal free flap increased significantly in the miR-126 mimics group than the other two groups, as did the ratios of pAKT/AKT and pERK1/2/ERK1/2. In addition, the expression levels of macrophage inflammatory protein-1α, tumor necrosis factor-αand vascular cel adhesion molecule-1 protein in the flap tissue fluid were significantly lower in the miR-126 mimics transfection group than the other two group. Al these findings suggest that miR-126 can promote free flap survival by creating favorable conditions for angiogenesis in the free flap tissue.

Autism spectrum disorders (ASD) is a complex,behaviorally defined,mental disorder with uncertain causes although it is more likely caused by the interaction of genetic and environmental factors.ASD's heterogeneity in pathology and phenotype makes it difficult to accurately diagnose individual patients.Therefore,it is an urgent need to develop effective tools for screening susceptible individuals for early diagnosis and treatment.This paper reviews recent neuroimaging and imaging genetic studies of ASD.The existing results indicate that proper combination of multimodal neuroimaging techniques and genetic technology is expected to reveal the pathological mechanism of ASD and might help find objective biomarkers for achieving an early and accurate diagnosis of ASD.

Objective To observe the effect of laparoscopy combined with choledochoscopy in treatment of cholelithiasis clinical effect .Methods 80 cases diagnosed as cholelithiasis cases were divided into control group and observation group with 40 cases in each group .The control group used the traditional laparotomy incision gallbladder stone ;observation group were treated by laparos-copy combined with choledochoscopy .Results In the observation group ,the operation and the hospital stay were significantly shor-ter than the control group ,operation curative effect was obviously superior to the control group ,the incidence of postoperative com-plications was significantly lower than the control group .Conclusion The use of laparoscopy combined with choledochoscopy tech-nology in treatment of gallstones have good clinical effect .

OBJECTIVE To investigate the distribution and regularities of intractable nasal bleeding site in different aged patients.METHODS The clinical data of 149 patients with intractable epistaxis were reviewed respectively.RESULTS Of the 149 patients, 110 cases were male and 39 cases were female with a age ranged from 18 to 87 years. They were divided into young group (39y or less), middle age group(40~59 y) and elderly group(60y or older), and there were 36, 52 and 61 cases in each group respectively. Hemostasis was performed with local anesthesia or general anesthesia under nasal endoscope. There were 145 cases with definite bleeding site, and electrocautery or micropacking was used for stop the bleeding. There were 4 cases without definite bleeding site. The bleeding site was on the posterior fornix of inferior meatus in 22 cases(61%), posterosuperior of middle nasal meatus in 13 cases(36.1%) and olfactory cleft of nasal septum in one case(2.7%) in young group; The bleeding site was on the posterior fornix of inferior meatus in 23 cases(44.2%), posterosuperior of middle nasal meatus in 10 cases(19.2%) and olfactory cleft of nasal septum in 17 cases(32.7%) in the middle age group; In the elderly group, the bleeding site was on the olfactory cleft of nasal septum in 37 cases(60.6%), posterosuperior of middle nasal meatus in 15 cases(24.6%) and posterior fornix of inferior meatus in 7 cases(11.5%).CONCLUSION In patients with refractory nasal bleeding, the majority responsible vessel was sphenopalatine artery or its branches in young and middle-aged patient and branches of anterior/posterior ethmoidal artery in elderly patients. Along with the increase of age, the sphenopalatine artery branch bleeding decreased, but the branches of anterior/posterior ethmoidal artery bleeding increased.

Objective: To detect the thickness of silicon coating film for glass injection bottles by focused ion beam (FIB) emission scanning electron microscopy and investigate the stability and uniformity of the film.Methods: The boron silicon coating injection bottles were selected as the experimental samples and treated with such stability experiments as ultrasonic cleaning, high temperature resistance, heat resistance, water resistance, acid resistance and alkali resistance.The samples were vertically cut by the ion beam from an FIB field emission scanning electron microscope, and the thickness of the cutting face was measured by the built-in measuring module of the scanning electron microscope.Results: The thickness of silicon film was stable and uniform.Conclusion: The film thickness of glass bottles can be accurately detected, and the film stability and uniformity can be reflected directly and objectively by using an FIB double beam field emission scanning electron microscope.

Child ; Congresses as Topic ; Humans ; Nephrology ; Pediatrics