Objective To evaluate the outcomes of umbilical hernia repairing in adults.Methods Forty-nine cases of umbilical hernia admitted between 2003 and 2008 were analyzed retrospectively.Opera-tive techniques included traditional repair (n = 14),Kugel patch (n = 21) and mesh plug-patch (n = 14).Results The operative time of traditional repair was shorter than those for patients who underwent Kugel patch hernioplasty or mesh plug-patch hemiorrhaphy.But the pain was significantly higher.With a follow-up of 1 -6 years,whereas no recurrence was documented for the tension-free hemiorraphy,but a case recurred for traditional repair.Conclusion Tension-free hemiorraphy is a safe,efficacious and lower complications technique for the repair of umbilical hernia.

Sporadic parathyroid adenomas are the most common cause of primary hyperpamthyroidism,The molecular mechanisms underlying the pathogenesis of sporadic parathyroid adenomas are incompletely understood and early specifical diagnosis is lack.With the development of molecular biological technology,gene research in parathyroid adenoma has made great progress.This article reviewed the changes at the molecular level.

Objective To assess the efficacy of radical transurethral electrovaporization for invasive bladder cancer. Methods Thirty-six patients with invasive bladder cancer from february 2008 to February 2010 were treated by transurethral electrovaporization resection of bladder tumor (TURBT). The operation procedure was based upon the principle of radical transurethral resection for bladder tumor. The tumor was resected to fatty layer outside the bladder wall. After operation Bacillus Calmette-Guerin (BCG) irrigation of bladder was given,all patients were followed up for 3 to 24 months. Results The recurrence occurred in 12 cases in 2 years,with a recurrence rate of 33. 3% (12/36). These recurrence cases were treated with TURBT again. Six cases dead in 2 years,with a mortality of 16. 7% (6/36). Conclusion TURBT is suitable for those who are older or weak,and not medically fit for radical cystectomy or those who refuse the open surgery,which can prolong the survival time and improve the quality of life.

Objective To investigate the differentially expressed genes in sporadic parathyroid adenomas using genechip and provide basis for further studying the mechanism and diagnosis of sporadic parathyroid adeno-mas. Methods Total RNA was extracted from normal parathyroid tissues and adenomas tissues. The mRNA was used to prepare probes. The mixed probes were hybridized to the cDNA microarray. After washing, the DNA chips were scanned by laser scanner. The acquired image was analyzed. Results Among the 47 000 target genes, 2302 genes were identified in sporadic parathyroid adenomas tissues that had at least two-fold changes compared to normal parathyroid tissues, and 1012 genes up-regulated and 1290 down-regulated were found in this study. Of 10 genes up-regulated and 27 down-regulated, the changes were over five-fold. The function of these changed genes was involved in transport, cell adhesion, signal transduetion, transcription, ion binding and so on. Conclusions Many parathyroid adenomas associated genes have been screened by high-throughout gene chip method, Which may help to identify the mechanism and diagnosis of sporadic parathyroid adenomas.

Objective:To observe the bone regeneration capacity of bone defects around BLB implants covered with or without membranes.Methods:Implants were installed into femoral bone of grown-up dogs.Near implants,3 mm horizontal width,5 mm vertical depth and 1,2,3,4 mm horizontal length(along the macroaxis of femoral bone) standard gradient bone defects were made.On one side,the incisions were directly sutured by lamination,and on the other side the incisions were sutured by lamination after using collagen membrane to cover on the defects.Three months after the operation the specimens were observed by stereomicroscopy.Results:In the groups with 1,2 and 3 mm defects,the defect areas had been filled completely with new bone which was mainly compact cortex.In the group with 4 mm defects,the defect areas were filled with new bone which was mainly trabecular bone.Bigger lacunes could be observed in the groups without membranes.Conclusion:If the defect is less than 3 mm,whether bioresorbable collagen membrane is used or not,osseointegration is well in the implant-bone interface.Improving bone regeneration should be done when the bone defect extension is bigger.

Objective To investigate the procedures and therapeutic effects of reoperation of papillary thyroid carcinoma with lymph node metastasis.Methods The clinical data of 10 papillary thyroid carcinoma patients with lymph node metastasis received reoperation were retrospectively studied. Results Reoperation was successfully performed in 9 patients except one patient with tumor surrounding common carotid artery and brachial plexus who had partial tumor removed. Three patients had simple lymphectomy,2 had complete thyroidectomy, 2 had complete lobectomy plus ipsilateral cervical lymph node dissection and 2 had tumor resection plus cervical lymph node dissection. There were no new complications. Conclusions Papillary thyroid carcinoma has the characteristic tend to spread to spread to cervical lymph nodes. Rreoperation offers good outcome for recurrent papillary thyroid carcinoma.

Objective To investigate the expression pattern of transcription factor Olig 2 in cuprizone-induced mouse model of acute demyelination .Methods C57BL/6 mice were fed with 0.2%cuprizone to induce acute demyelina-tion.Immunofluorescence and qRT-PCR were used, and Olig2, MBP and GFAP were detected in the brain tissues of con-trol group and cuprizone-treated groups for 6 weeks and recovery for 2 weeks.Results Severe demyelination occurred in the corpus callosum following 6-weeks exposure to cuprizone , while remyelination was detected in the white matter after the mice were given diet without cuprizone .In the normal mice , Olig2 was expressed in a low level , while the experessions of Olig2 and GFAP were significantly increased , and Olig2 +/GFAP+cells were detected after demyelination .But the expres-sion of MBP was below the normal level with demyelination .After recovery for 2 weeks, the experession of Olig2 was lower, but the experessions of MBP and GFAP were increased .Conclusions Olig2 may play an important role in the glial differ-entiation from neural progenitor cells into active astrocytes , and in the glial scar formation .

In this study,thermosensitive and repairable molecularly imprinted solid-phase microextraction fibers were synthesized using spiramycin as template molecule,methacrylic acid and N-isopropylacrylamide as functional monomers,ethylene glycol dimethacrylate as crosslinking agent,and silanized quartz capillary as carrier. The prepared molecularly imprinted solid-phase microextraction fibers were characterized by scanning electron microscope and nitrogen adsorption/desorption,and various parameters affecting the extraction efficiency were optimized. Due to high selectivity and sensitivity of the fibers for macrolide antibiotics,the quantitative analysis of four macrolide antibiotics in food matrix,spiramycin,tilmicosin,tylosin,and josamycin,was peroformed in combination with high performance liquid chromatography. In the range of 0.5 to 50 μg/mL,the chromatographic peak area showed a good linear relationship with the concentration. The spike recoveries of the samples at three different addition levels were between 81.8% and 119.1%;the inter-day precisions were less than 13.8% (n=6),and the intra-day precisions were less than 15.5% (n=3).

Objective To investigate the internal quality control ( IQC ) on clinical chemistry , clinical immunology and clinical hematology in mutual recognition laboratories in medical institutions in Beijing.Methods By means of questionnaire survey and on -site investigation, fresh frozen serum and whole blood samples with assigned values by reference method were measured to investigate the status of IQC on clinical chemistry , clinical immunology and clinical hematology in 142 mutual recognition laboratories in medical institutions of Beijing,and results were analyzed.Results 142 copies of questionnaireson clinical chemistry, clinical immunology and clinical hematology were send out and 120, 97, and 101 laboratories returned the questionnaires respectively .The information feedback rate was 84.5%, 68.3% and 71.1%respectively .All the questionnaires were effective .Questionnaires survey results showed that more than 50%laboratories set up quality control goals and the most of the goals were probability for error detection ( Ped) 95%, probability for false rejection(Pfr)5%;About 70% laboratories usecd the same quality control plan for different tests ;The most frequently used quality control rules are 12s/13s/22s.On-site investigation showed that ,take the results of clinical chemistry for example , based on the desirable biological variation and WS/T 403 -2012 , most of the tests can't meet the quality control goalsunder the existing quality controlcondition.Conclusion Clinical laboratories should consider their actual situations , assess their own qualitylevels that they can reach , set reasonable quality standards for themselves , and make appropriateindividualized quality control plan.

A case with horizontal and vertical bone deficiency at the maxillary esthetic area is reported.A titanium disk was applied to maintain the space for guided bone regeneration,and ridge splitting and bone compressing technique were used to prepare the site.Finally,the restoration of implant tooth with favorable esthetic outcome was obtained.