Objective To detect the transfection of pIRES 2-EGFP-NT3 in mouse cochlea fibroblast by cationic liposome . Methods After pIRES2-EGFP-NT3 had been abstracted successfully , it was transfected into mouse cochlea fibroblast by lipofectami-neTM2000.Twenty four hours later, the efficiency of the transfection was analyzed by confocal microscope .Results The pIRES2-EG-FP-NT3 was effectively transfected into mouse cochlea fibroblast by cationic liposome .The transfected fibroblasts displaying green fluo-rescence were observed under fluorescence microscope .Conclusions The effective transfection of pIRES 2-EGFP-NT3 into mouse cochlea fibroblast by lipofectamine TM 2000 laid the basis for the following experiments , such as NT3 gene transfection in deaf or normal cochlea and so on .

Cell Membrane ; metabolism ; Gastrointestinal Stromal Tumors ; diagnosis ; metabolism ; Humans ; Immunohistochemistry ; Proto-Oncogene Proteins c-kit ; analysis

Turn-over of messenger ribonucleic acid ( mRNA) is a major control point in gene expres-sion.In mammals,many mRNAs encode inflammatory cytokines ,oncoproteins,and G-protein-coupled receptors are destabilized by the presence of AU -rich elements ( AREs ) in their 3′-untranslated regions .Association of ARE-binding proteins(AUBPs)with these mRNAs promotes rapid mRNA degradation .ARE/poly(U)-binding factor 1(AUF1),one of the best-characterized AUBPs,binds to many ARE-mRNAs and assembles other fac-tors to recruit the mRNA degradation machinery .Most studies support an mRNA -destabilizing role for AUF1,al-though other findings suggest additional functions for this factor .However,several lines of evidence also support a role for AUF1 in the initiation and/or development of cancer .Many AUF1-targeted transcripts encode products that control pro-or anti-oncogenic processes .Numerous signaling pathways alter the composition of this AUF 1 complex of proteins to affect changes in ARE -mRNA degradation rates .This review briefly describes the roles of mRNA decay in gene expression in general and ARE -mediated decay ( AMD) in particular ,with a focus on AUF1 and the different modes of regulation that govern AUF 1 involvement in AMD.In the end,we discuss how changes in AUF1 isoform distribution,subcellular localization,and post-translational protein modifications can influence the metabolism of targeted mRNAs .

Objective To evaluate the dosage regimen of sulfasalzine combined with recombinant human tumor necrosis factor receptor-Fc fusion protein (rhTNFR) in the induction and maintenance of remission in active ankylosing spondylitis.Methods This study enrolled 100 ankylosing spondylitis patients with disease duration for less than five years who were treated with sulfasalzine and rhTNFR combination therapy.Patients were randomly assigned to three groups six weeks later:patients in the G1 group received sulfasalzine combined with rhTNFR at a 25 mg dosage twice each week.Patients shifted to monotherapy with sulfasalzine six weeks later:patients in G2 group received sulfasalzine combined with rhTNFR at 25 mg dosage per week.Patients were switched to monotherapy of sulfasalzine twelve weeks later:patients in G3 group received sulfasalzine combined with rhTNFR at 25 mg dosage once every ten days.Patients were changed to monotherapy of sulfasalzine seventeen weeks later.The whole treatment lasted for 24 weeks.All participants were followed up at week 0,6,12,18,24 respectively and were evaluated by BASDAI 50.The primary end-point of this study was the percentage of patients achieved BASDAI 50 remission.Data were analyzed with SPSS version 17.0.Independent t-test and x2 test were adopted to analyze data.Results 90％ of patients treated with combination therapy reached BASDAI50 at the 6th week.All patients in the G1 group achieved BASDAI 50 remission at 12th week,but the percentage dropped to 68.7％ at 18th week,which gradually decreased to 37.5％ at the 24th week.In G2 group,93.9％ patients reached BASDAI50,which declined to 81.8％ at the 18th week.The whole number accounted for 60％ at the end point of 24th week.In G3 group,85.7％ patients achieved BASDAI50 at the 12th week,accounted for 74.3％ at 18th week,and declined to 68.6％ at the 24th week.G3 group of patients presented a significantly higher rate than other groups(P＜0.05).Conclusion Sulfasalzine and rhTNFR combination therapy can gain remission in active AS patients after treated for six weeks.Doctors may extend TNF antagonist treatment in order to achieve long-term remission.

OBJECTIVE: This article summarizes the matters warranting consideration in adult cochlear implants before and after operation with different deafness causes and investigates the impact of etiological variables that affect hearing and speech ability rehabilitation after cochlear implantation. METHOD: We retrospectively reviewed the preoperative data of 30 adults who have received cochlear implantation, switch on, and periodical post operative mapping. 'Nijmegen Cochlear Implant Questionnaire' was used for every patient during follow-up and test their hearing thresholds at one year after switched-on. The average score of every patient in the six aspects of questionnaire, along with the average hearing threshold, has been gathered. RESULT: The average hearing threshold of every patient is lower than 35 dBHL. The average score of 28 patients is more than or equal to 75 in the basic sound perception, advanced sound perception as well as self-esteem. The average score of 26 patients is more than or equal to 75 in capacity for action. Besides, as for sociability and speech ability, the average score of 22 patients is more than or equal to 75. CONCLUSION Auditory perception can be greatly improved regardless of deafness causes, on the premise that appropriate candidate is selected. The primary disease should be brought under control before and after the operation. The influence of various causes to the language ability rehabilitation largely depends on the development of the language center at deafness onset. Self-esteem and social identity can be significantly enhanced after cochlear implantation in adult patients, particularly those with acquired deafness.
Adolescent ; Adult ; Aged ; Auditory Perception ; Cochlear Implantation ; psychology ; Follow-Up Studies ; Humans ; Middle Aged ; Retrospective Studies ; Self Concept ; Social Identification ; Treatment Outcome ; Young Adult

OBJECTIVE: To investigate the treatment for benign tumor of external auditory canal by carbon dioxide laser under microscope. METHOD: Ten cases of benign tumor of external auditory canal were treated by carbon dioxide laser under microscope. The curative effects and complications were observed. RESULT: Ten cases of benign tumor of external auditory canal were satisfied after operation without any complications. There were no recurrences during 3 months to 2 years of follow up. CONCLUSION The operation for benign tumor of external auditory canal by carbon dioxide laser under microscope was easy, safe and effective.
Ear Canal ; pathology ; Ear Neoplasms ; therapy ; Humans ; Laser Therapy ; methods ; Lasers, Gas ; Microscopy ; Neoplasm Recurrence, Local ; Neoplasms

Objective To study the stability of NRT threshold and the correlation between NRT threshold and the value of behavior T ,C in order to instruct mapping in infant cochlear implant ,and to study whether the elic‐itation of NRT waveform can be applied to determine the effects of rehabilitation .Methods There were 159 cases with complete information in data in this study .150 out of the 159 cases coincided with the study requirements of the changes and correlation .We had collected the NRT thresholds of the electrodes of No .1 ,6 ,11 ,16 ,22 in switch-on ,one month after switched -on ,half a year and one year after switched -on .The analysis of variance method was adopted to compare the threshold changes of each electrode in different stages .We had collected the values of behavior T ,C in one year after switched -on .Pearson regression analysis was used to compare the correlation be‐tween NRT threshold in switch -on and this value of behavior T ,C .We applied MAIS assessment scale to make a questionnaire for all 159 patients during the follow -up at one year after switched -on .We had gathered the scores in three aspects ,the average score in questionnaire and the average hearing threshold of every child .All children were divided into four groups according to whether the elicitation of NRT waveform during - operation ,post-op‐eration .Results Regarding the NRT threshold ,there was no significant difference in the pairwise comparison of four time points(P>0 .05) .There was positive correlation between NRT threshold and behavior T ,C(P<0 .01) , but the correlation was wake .The group with no waveform on the during -operation and post -operation had sig‐nificant differences with the other groups in all scores and average hearing threshold (p<0 .01) .And there was no statistical significance among the other three groups (P> 0 .05) .Conclusion The NRT threshold remains steady from switched -on .A positive correlation exists between NRT threshold and the actual T ,C value .The NRT threshold can be used to estimate the T ,C value .But the accuracy of the measured value is less than the behavior method .We still need to use behavior method to measure as soon as possible .The NRT waveform appearance on the post-operation is more significant than that on the during -operation to prognosis of rehabilitation .

Objectives: The aim of the study was to evaluate the therapeutic effects of 6-mercaptopurine in the treatment of refractory childhood nephrotic syndrome (NS). Methods: According to the varieties of NS, 6-mercaptopurine (2 mg/kg body weight daily) combined with corticosteroid or 6-mercaptopurine (2 mg/kg body weight daily) alone after tapering of steroids were given to 28 consecutive children with primary NS in our hospital. Results: One month after the use of 6-mercaptopurine, proteinuria was decreased. The duration of improvement was 9～28 days, with mean duration of 17 days. Over-all effective rate was 85.7%. Among different varieties of NS, the best therapeutic effect was noted in steroid-dependent children; the better therapeutic effect in steroid-resistant children; and good therapeutic effect in frequently relapsing children. The effective rates were 100%, 84.6%, 81.8% respectively. All the pathological varieties of 28 children were confirmed by renal biopsy. The better therapeutic effects were noted in slight mesangial proliferative glomerulonephritis (MsPGN) and minimal change nephrotic syndrome (MCNS). The less therapeutic effect was noted in membranoproliferative glomerulonephritis (MPGN). Their therapeutic effective rates were 92.9%, 80%, 66.7% respectively. Unfortunately, drug-induced aplastic anemia was seen in 2 cases. Slight gastrointestinal reactions were present in 6 cases. There were no side reaction on the gonad. Conclusions: The great difference in the therapeutic effects is related to the different pathologic varieties of NS. With regard to the treatment of refractory NS in children, the pathological varieties should be confirmed by renal biopsy as soon as possible. Based on the renal biopsy, 6-mercaptopurine can be considered in the treatment of MsPGN and MCNS. As a result, relapses could be reduced; the duration of remission could be prolonged, and the side reactions from steroid treatment could be avoided. The use of 6-mercaptopurine for the treatment of refractory NS is one of the effective therapy.

ObjectiveTo investigate the clinical application of tacrulimus (TAC, FK506) in children with primary nephrotic syndrome (NS). MethodsSixty-five primary NS children received routine or decreased-dosage glucocorticosteroid according to clinical NS types after hospitalization. At the same time, TAC was given orally with the dosage of 0.1 to 0.15 mg/kg, once every 12 hours, for 6 to 24 months. And the serum concentration of TAC was monitored during the course. ResultsAfter the treatment of TAC for 1 to 2 months, 65 patients were recovered with gradually reduced urinary protein, rapidly increased serum albumin, and improvement of cholesterol and triglycerides. Total remission rate was 83.1% and onset time was 7 to 54 days. Twelve cases experienced recurrence. Increased CD4, as well as 3/3 or 3/1 TAC genotype, indicated higher remission rate. Various pathological types had different remission rates or ratio, which were as follows: minimal change nephropathy (96.4%), mesangial proliferative glomendonephritis (90.0%), membranous nephropathy (2/3), membranous proliferative glomerulonephritis (3/5), focal segmental glomerulosclerosis (4/9). The patients would recover in the course of treatment under the conditions of TAC initial dose as 0.1 to 0.15 mg /kg per 12 hours and controlled serum concentration as 5 to 10 g/L. During the treatment, 12 cases appeared gastrointestinal symptoms, mainly as anorexia, nausea and vomiting, 1 abdominal pain, 2 headache, 1 tremor, 1 paresthesia, 3 insomnia, 4 transient increased Scr, 8 slightly increased NAG, 6 increased C3 and α-2 macroglobulin. The symptoms disappeared within one week or after stopping TAC. ConclusionsTAC is effective in primary NS children, even with abnormal liver function or tuberculosis infection. TAC can also be a substitute to cyclosporine A.

Objective To investigate the drug resistance and genotype of methicillin-resistant Staphylococcus (MRS), and to study the epidemiology of drug resistance in Staphylococcus. Methods Drug susceptibility tests were performed for 138 Staphylococcus strains clinically isolated, and mecA gene was detected with PCR. For mecA positive strains, Staphylococcal cassette chromosome mec (SCCmec) gene was detected by two multiplex PCR assays. Results Seven (10.8%) out of 65 Staphylococcus aureus strains were methicillin-resistant Staphylococcus aureus (MRSA) strains, and 44 (60.3%) out of 73 coagulase negative Staphylococcus strains were methicillin-resistant coagulase negative Staphylococcus (MRCNS)strains. There was statistical significance on the difference of isolation rates (x2 = 37. 05, P ＜0.01). No vancomycin or nitrofurantoin resistant strain was found. There were 52 (52/138, 37.7%) mecA positive strains, including 16 SCCmec type Ⅰ strains, 1 type Ⅱ strain, 13 type Ⅲ strains, 9 type Ⅳ strains and 4 type Ⅴ strains. Conclusions Drug resistance in MRS is increasingly serious. MRCNS strains are more popular than MRSA in clinic, and SCCmec Ⅰ and Ⅲ may account for most infections.