Dendritic Cells ; Humans ; Rhinitis, Allergic, Perennial ; Rhinitis, Allergic, Seasonal

Cilia ; ultrastructure ; Humans ; Maxillary Sinus ; ultrastructure ; Microscopy, Electron, Scanning ; Mucous Membrane ; ultrastructure

Clinically,heparin-induced thrombocytopenia (HIT) is an uncommon but serious disease,which is induced by the use of immune unfractionated heparin or low-molecular-weight heparin.The overall incidence of HIT is about 0.6％-5.0％.Nevertheless,in clinical practice it is profoundly dangerous,especially for patients who are receiving cardiovascular surgery or interventional therapy.At present,HIT is a hot clinical research subject.This paper aims to make a brief review about HIT pathogenesis,epidemiology,clinical evaluation and treatment,etc.

Objective To summarize the clinical experience of urethral realignment for treating early urethral injury under the guidance of ureteroscope,and evaluate its curative effect.Methods Twenty-nine male patients with urethral injury were selected,and 12 patients of posterior urethral injury,17 patients of former urethral injury.All the patients were treated with urethral realignment under the guidance of ureteroscope,postoperative indwelling catheter 3-8 weeks,every 7-16 days changed diameter increase 2 F the catheter 1 time.Results The 29 patients with urethral injury were a indwelling catheter success,all patients were no incontinence after operation 3 months.In the 29 patients,27 patients were urination unobstructed after catheter removal,2 patients were appeared urine line slim after 2 weeks,the 2 patients were normal urination after short urethral expansion.Conclusions The urethral realignment for treating early urethral injury under the guidance of ureteroscope has simple,lower complication,rapid recovery,better effect.The continuous flexible progressive urethral expansion and the strict nursing,which can effectively reduce the occurrence of urethral stricture.

Objective To investigated the role of the autophagy lysosomal pathway in PD cells and the possible molecular mechanisms. Methods A dopaminergic neuronal injury model was induced by 6-OHDA in PC12 cells . Autophagosomes in PC12 cells were examined by transmission electronmicro-scopy( TEM ). The expression of LC3- Ⅱ , Cathepsin B were assayed by western blot analysis. Results TEM revealed that the autophagosomes were increased in PC12 cells after 6-OHDA treatment and appeared apoptosis. The LC3-Ⅱ (2h:52.57 ±2.27,4h:56.83 ±3.51,6h:73.43 ±5.41,12h:103.90 ±2.57,24h: 100.40 ±3.91 )and Cathepsin B expression ( model group: 113.80 ± 4.46; normal group 35.89 ± 3.40) were increased after 6-OH DA treatments (P ＜ 0.05 or P ＜ 0.01 ). Conclusion The results indicate that autophagy lysosome pathway is involved in 6-OHDA-induced cell death in PC12 cells.

Specific scAbs could be obtained through biopanning from phage antibody libraries by use of antigens as target molecules. scAbs specific to thrombin were separated from mouse antibody library by the panning strategy of alternating liquid-solid phase in this paper. Thrombin was biotinylated by photobiotin at first, then avidin-coated magnetic beads were utilized to isolate specific scAbs. The eluted phages were amplified and subject to the second round panning in microtiter plate to remove the unspecific reombinant phages. 4 specific scAbs were separated from 23 phage clones after four rounds of alternative panning.

Objective To evaluate the therapeutic effects of aminoguanidine(AG) on cerebral ischemia-reperfusion damage in rats. Methods The intravascular thread models with 2 h of occlusion and 22 h of reperfusion were made in the rats.The brain infarction size and the degree of blood brain barrier(BBB) disruption in the ischemic regions were evaluated by staining with 2,3,5-triphenyl tetrazolium chloride and observing with Evans blue fluorescence microscope.HE staining was utilized for observing neutrophil infiltration. Results The brain infarction(volume,) the area of BBB disruption and the degree of neutrophil infiltration were dramatically decreased in the treatment group as compared to the control group(P

Objectiye To study the mechanism by which transcranial magnetic stimulation (rTMS) affects cognitive dysfunction in vascular dementia (VD). Methods Thirty-six male Wistar rats were randomly divided into a control group, a VD group, a low frequency rTMS group and a high frequency rTMS group. Two-vessel occlusion was employed to induce VD models. Low frequency rTMS group rats were given 0.5 Hz rTMS for six weeks. High frequency rTMS group rats were given 5 Hz rTMS for six weeks. Morris' water maze test was used to measure their spatial learning ability and memory. The ultrastructures of the synapses in the four groups were detected with transmission electron microscopy. The expression of synaptophysin (SYN), brain derived neurotrophic factor (BDNF) and Nmethyl-D-aspartate receptor 1 ( NMDAR1 ) mRNA and protein in the hippocampus were determined by real-time PCR and Western blotting. Results The behavior and morphology of the rats treated with rTMS improved. The average expression of SYN, BDNF and NMDAR1 mRNA and protein in the low frequency rTMS group and the high frequency rTMS group were significantly higher than in the VD group. Conclusion rTMS can provide a rehabilitative effect for VD. The mechanism might be associated with enhancing the expression of SYN, BDNF and NMDAR1 in the hippocampus.

BACKGROUND:Psychiatric patients are the high risk group of people who are liable to commit suicide.Recently,research on neurobiology and genetics of suicide mainly concentrates in the study of 5 hydroxytryptamine(5 HT) system.It is found that T102C polymorphism of 5 HT2A receptor gene is associated with suicide in depressive patients. OBJECTIVE:To investigate the correlation of A 1438G polymorphism of 5 HT2A receptor gene with attempted suicide in psychiatric patients. DESIGN:An observational comparative study of taking the patients as subjects and healthy physical examinee as the controls. SETTINGS:A psychiatric department in a municipal hospital and a neurological department in a university hospital. PARTICIPANTS:All the samples in the research were collected from the Department of Psychiatry of Yangzhou Wutaishan Hospital from March to September 2002.Analysis of genotype was completed in the Neurobiological Laboratory of Xuzhou Medical Institute from October to December 2002.Inclusive criterion:patients met the diagnostic criteria of schizophrenia or affective disorder in the third edition of the Chinese Classification and diagnostic criteria of Mental Disorders(CCMD 3) and Diagnostic and Statistical Manual of Mental Disorders Fourth Edition(DSM IV).Exclusive criterion: parasuicider with idea or behavior of hurting oneself,but without intention to die.According to whether there was suicidal behavior or intention,116 patients were divided into 2 groups:attempted suicide group[n=52,35 males and 17 females,with an average age of (44± 13) years old] and no suicide group [n=64, 44 males and 20 females, with an average age of (48± 15) years old].Other 63 cases were taken as the normal controls[33 males and 30 females, with an average age of (55± 17) years old]. INTERVENTIONS:DNA of all the participants was extracted with the routine method of chloroform saturatedphenol leukocyte pheresis.The polymorphism of 5 HT2A receptor gene was analyzed with the restriction fragment length polymorphism. RESULTS:The G allele frequency of A 1438G polymorphism in the attempted suicide group(0.52) was significantly higher than that in the normal control group(0.39)(χ 2=3.91,P< 0.05).There were significant differences in the distribution of the 3 genotypes of AA, AG and GG between the attempted suicide group(0.23,0.50, 0.27) and normal control group(0.32, 0.59, 0.09)(χ 2=6.12,P< 0.05). CONCLUSION:Attempted suicide of psychiatric patient is associated with A 1438G polymorphism of 5 HT2A receptor gene.G allele may be a risk factor for the attempted suicide of psychiatric patient.

Aim To construct a polysialic acid(PSA)and neural cell adhesion molecule(NCAM)differently expressing COS-7 cell line,and investigate the effects of PSA on the cell adhesion,migration and invasion,aiming to establish the base for further investigation of the signaling passway of the diverse celluar migration and invasion,and elucidate the molecular mechanism of PSA promoting cancer cell metastasis.Methods A polysialic acid and neural cell adhesion molecule differently expressing COS-7 cell line was constructed by transient cotransfection,and the cotransfection efficiency was determined by Western blot and flow cytometry.Adhesion assay was used to investigate the effect of PSA on cell adhesion ability;transwell assay was used to measure migration and invasion ability.Results The PSA and NCAM differently expressing COS-7 cell line was successfully constructed,which demonstrated PSA inhibited the cell adhesion to basement membrane,and promoted the migration and invasion ability.Conclusions The constructed polysialic acid and neural cell adhesion molecule differently expressing COS-7 cell line can be used to investigate molecular mechanism of promoting cancer cell metastasis induced by PSA in the future.