Based on the theory of tumor angiogenesis,the vascular system is necessary for the advance and metastasis of the tumor.To inhibit or even cure the tumor,the researchers all over the world have made a great many of studies on the mechanism of tumor angiogenesis and have acquired some achievements.Based on the findings,a lot of factors are involved in tumor angiogenesis,and they constitute the complex regulating network through interaction at the molecular and cellular level.

Objective To explore the frequencies and phenotype of myeloid and plasmacytoid dendritic cells (mDC and pDC) in chronic HCV infection and to investigate the relationships between DC frequencies and HCV viral load and serum ALT level. Methods PBMC were isolated from chronic HCV infected patients and healthy control. Multi-color flow cytometry was used to analyze the frequencies and surface marker expression on mDC and pDC. The relationship between DC frequencies and viral load and ALT level was also calculated. Results In comparison with healthy control, frequencies of mDC and pDC in chronic HCV infection were significantly decreased (0. 37 ± 0. 19 and 0. 19 ± 0. 12 vs 0. 51 ± 0. 18 and 0. 29 ± 0.13, P＜0.05). The frequency of mDC was negatively correlated with HCV viral load (r= -0.5878, P ＜ 0. 0001 ) and serum ALT level ( r = - 0. 4628 , P = 0. 003 ). Both costimulatory markers ( HLA-DR, CD83, CD86, and CD40) and coinhibitory marker (PD-L1) expression on mDC and pDC in HCV infection were increased (P＜0.01 for costimulatory marker, P＜0.05 or F＜0.01 for coinhibitory marker). Conclusion The frequencies of mDC and pDC in chronic HCV infection were decreased, while the expression of costimulatory markers and coinhibitory marker were increased or not decreased in HCV infection. The decreased frequency of mDC was probably related to persistance of HCV infection.

OBJECTIVE:To explore the observation and nursing points of hemorrhage in intravenous thrombolysis after using alteplase. METHODS:128 patients underwent alteplase intravenous thrombolysis were selected as the research object. The occur-rence of hemorrhage in each part were observed within 48 hours after medication and nursed timely. RESULTS:128 patients re-ceived intravenous thrombolysis. 48 h later,26 patients suffered from hemorrhage complications (20.3%). Among them,there were 6 cases of nose bleeding (4.7%),8 cases of subcutaneous congestion (6.3%),6 cases of gingival bleeding (4.7%) and 6 cases of gastrointestinal bleeding(4.7%). There was no significant difference in the incidence of complications among those groups (P>0.05). The time of nose bleeding was (3.2 ± 1.3) h,the time of subcutaneous congestion (3.5 ± 1.2)h,the time of gingival bleeding(1.5±0.7)h,and the time of gastrointestinal bleeding(4.1±1.8)h. The time of gingival bleeding was earlier than that of other groups,with statistically significant difference(P<0.05). There was no statistically significant difference among other groups (P>0.05). CONCLUSIONS:In alteplase intravenous thrombolysis,nurses should closely monitor hemorrhage and complications, especially the complication of gingival bleeding. Find out the complications timely and nurse it as early as possible.

With the growth of disease incidence in allergic diseases of upper respiratory tract year by year, airborne pollen has been considered the most important cause of the diseases. There is an obvious positive correlation between the concentration of airborne pollen and the symptoms of the diseases. The data is collected which includes environment that patient lives in about the kinds of airborne pollen and their seasonal distribution and latest conditions of the airborne pollen at home and abroad. It is benefit for the further developments of the researches of airborne pollen and has a clinical significance for the prevention, diagnosis and treatments of allergic diseases in our country.
Allergens ; immunology ; Meteorological Concepts ; Particulate Matter ; immunology ; Pollen ; immunology ; Seasons

ObjectiveTo investigate the clinical features of intramedullary spinal cord tumors(IMSCT) in children.MethodsThe clinical data including sex,age,pathohistology,clinical manifestations and medical check-up collected from 16 children diagnosed as IMSCT in Shengjing Hospital Affiliated to China Medical University,were retrospectively reviewed and analyzed.ResultsThe study subjects inclu-ded 11 male and 5 female,with an average age of(8.55?4.28) years old,ranged from 15 months to 14 years old.The interval lasted 1 day to 9 years from onset of the syndrome to confirmed diagnosis of IMSCT.The first clinical manifestation was mostly pain.The main clinical mani-festations included limb dyskinesia in 14 cases,pain in 12 cases,urine and stool disturbance in 9 cases,gait irregularity in 8 cases,extremity atrophy in 3 cases.Medical check-up included abnormal tendon reflex in 14 cases,abnormal superficial reflex in 9 cases,sphincter dilatation in 6 cases,positive Babinski's signs in 5 cases,spinal deformity in 4 cases,region masses in 3 cases,paraesthesia in 2 cases,inequality of lower limb in 1 case,dermai sinus in 1 case,pigmentation in 1 case.The cases were evaluated by magnetic resonance imaging,which presented thickened spinal cord and intramedullary abnormal signals in all the cases.Pathological types: teratoma in 5 cases,dermoid cysts in 2 cases,epidermoid cyst in 2 cases.Misdiagnoses included urinary tract infections in 2 cases,rheumatoid arthritis in 1 case,and lumbar disc protrusion in 1 case.ConclusionsThe main pathohistology of pediatric IMSCT is congenital tumor.First clinical manifestation is pain.MRI can show a reliable evidence for the diagnosis.It is important to improve the outcomes of pediatric IMSCT by establishing the diagnosis and administering proper management as early as possible.

Epidermal growth factor (EGF) is a very important peptide growth factor,which is not only involving in a variety of ocular cell mitosis,proliferation and differentiation,but also participates in mediating the signal transduction between cell and cell,cell and matrix interaction and other biological functions.Corneal injury is a common and frequently occurring disease in ophthalmology,and it would lead to blindness without appropriate treatment.Researches showed that EGF can promote the repair and regeneration of wounded cornea.In recent years,these studies advance from animal experiment stage to clinical stage and also from the morphology evaluation stage to the genetics study stage.This paper provided an overview of EGF concept,its biological effectiveness,its relationship to corneal injury and its clinical application.

Biomedical Research ; Humans ; MicroRNAs ; Neoplasm Invasiveness ; genetics ; Neoplasm Metastasis ; genetics

Animals ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Cell Hypoxia ; Cytokines ; metabolism ; Epithelial-Mesenchymal Transition ; Head and Neck Neoplasms ; metabolism ; pathology ; Humans ; Hypoxia-Inducible Factor 1 ; metabolism ; Transcription Factors ; metabolism

Alzheimer Disease ; immunology ; therapy ; Amyloid beta-Peptides ; antagonists & inhibitors ; immunology ; metabolism ; Animals ; Antibodies, Monoclonal ; therapeutic use ; Blood-Brain Barrier ; Brain ; drug effects ; immunology ; Enzyme Inhibitors ; therapeutic use ; Humans

Objective: To analyze the relationship between the calcification characteristics of middle cerebral artery (MCA) M1 segment and the cerebral infarction in its supplying areas. Methods: A total of 121 patients (151 arteries) with MCA M1 segment calcification in our hospital were diagnosed by CT from July to August 2005. The characteristics pattern of calcification, the location and its relation with the vessels were analyzed. Calcification scores were calculated using Cascoring automatic analysis software. Whether there were infarct foci and the numbers of infarct focus in the supplying areas of the bilateral MCA were determined. The incidence of cerebral infarction in MCA calcification group and MCA non-calcification group, as well as the relationship between with or without infarct foci in the MCA calcification group and the various calcification score indexes were analyzed statistically. Results: One hundred twenty-one arteries had sm all nodular calcifications, 18 had large nodular calcifications, and 12 had linear calcifications. The calcification of 76 arteries located in the proximal M1 segment, 55 in the middle M1 segment, and 20 in the distal M1 segment. The relationship between calcific plaques and arteries: centripetal 43 arteries, eccentric 108 arteries. The incidence of cerebral infarction (51.7%) in the MCA calcification group was higher than that of the non-calcification group (27.5%), and there was statistical significance between the 2 groups (P < 0.01). The calcific volume, mass and score in the infarcted group were greater than those in the non-infarcted group (P < 0.01), and there was also statistical significance between the 2 groups (P < 0.01). Conclusion: CT volume scan may show tiny calcifications in MCA, and may classify and determine the location of calcifications. Whether MCA calcification or not and calcification scores in various indexes are closely associated with the development of cerebral infarction. The calcification group is more likely to develop cerebral infarction than the non-calcification group. The severity of calcification in the infarcted is more serious than that of the non-infarcted group.