Endoscopy ; methods ; Female ; Humans ; Meningocele ; surgery ; Middle Aged ; Pterygopalatine Fossa ; surgery

Cartilage ; pathology ; Catheter Ablation ; adverse effects ; methods ; Female ; Humans ; Laryngeal Nerves ; Microwaves ; Middle Aged ; Necrosis ; Thyroid Gland ; surgery ; Trachea ; pathology ; Vocal Cord Paralysis ; etiology

BACKGROUND: To summarize the progress of tissue engineering in repairing spinal cord injury in recent years.DATA SOURCES: A computer-based online search of PubMed database (http://www.ncbi.nlm.nih.gov/PubMed) and CNKI database (www.cnki.net/index.htm) was performed for articles published between September 1999 and September 2009 with the key words of "spinal cord injury, tissue engineering" in English and Chinese, respectively. Articles published recently or in authoritative journals in the same field were selected.DATA SELECTION: Inclusion criteria: clinical or experimental study about tissue engineering in repairing spinal cord injury.Repetitive studies were excluded. A total of 29 articles were included.MAIN OUTCOME MEASURES: Seed cell selection of tissue engineering; requirements of scaffold materials of tissue-engineered spinal cord, neurotrophic factor for regeneration, special internal environment construction for regeneration.RESULTS: Seed cells of tissue-engineered spinal cord include Schwann cells, olfactory ensheathing cells, embryonic stem cells, neural stem cells and bone marrow stromal stem cells. Scaffold materials involve synthetic or modified natural materials, such as polyglycolic acid, polylactic acid, and lactic acid/glycolic acid copolymer, which benefit cell attachment and nutrition factor aggregation following surface modification. Antibodies that promote or inhibit nerve growth factor in combination with polyoxyl are coupled to function as tissue-engineered scaffold, which may be approaches to repair spinal cord injury by tissue engineering in combination with stem cell transplantation and electric field/magnetic field stimulation.CONCLUSION: The optimal elements for tissue engineering are the key role in repairing spinal cord injury by tissue engineering.

Objective To investigate effects of magnetic stimulation on apoptosis of nerve cells and the production of inducible nitric oxidate synthase (iNOS) after spinal cord injury (SCI). Methods Thirty-two SpragueDawley male rats were randomly divided into a magnetic stimulation group (n = 16) and a control group (n = 16).SCI models were established by spinal cord transection in both groups. Rats were sacrificed at the 6th, 12th, 24th and 72nd hour post-injury, but the rats in the stimulation group received magnetic stimulation before being sacrificed.Apoptosis index (AI) and iNOS-positive cells rate were recorded at each time point. Results Apoptotic cells could be observed by the 6th hour post-injury, and were elevated from the 24th to the 72th hour. iNOS-positive cells were few at the first two time points, but had increased significantly at the 24th and 72nd hour post-injury. Compared with the control group, the apoptosis index of the stimulation group decreased a little at the 6th and 12th hour, but not significantly. The difference was quite significant at the 24th and 72nd hour, however, and the AI in the stimulation group decreased much more than that in the control group. There was little difference in the rate of iNOS-positive cells between the control and stimulation groups at any time point. Conclusions Magnetic stimulation could inhibit neural apoptosis and protect neurons from secondary SCI, but it has little effect on iNOS production.

Objective To evaluate the quality and proficiency testing of HIV confirmatory laboratories in China.Methods Sevenyear consecutive assessments of the laboratories added up to 297 times,including function and serum technology evaluations from 1997 to 2004.Questionnaires were used for the evaluation of function,including laboratory quality management, training and quality validation of the lower level laboratories.The serum technology evaluation used the same serum panel to screen HIV antibody and perform western blot(WB) confirmatory test.The two parts of evaluation results gave 100 scores each with excellent(above 95),good(81～95),pass(71～80),weak(60～70) and failure(below 60).Results The consistency rate between ELISA and WB in all laboratories was above 85 percent from 1998 to 2004,with a rate above 95 percent from 2001 to 2004.The excellent rates were all above 55 percent during these years,among which the highest is 91.67 percent in 2003.Only one laboratory failed in 1999.Conclusion The strict quality evaluation shows the testing ability of HIV confirmatory laboratory is improving year by year.The standardized management,performed with the training,validation and technical guidance to the lower level laboratory would continuously improve the quality of HIV confirmatory laboratories.

Objective:To investigate the expression of TIP30 and its relationship with clinico-pathological characteristics in patients with extrahepatic cholangiocarcinoma (ECC).Methods:The expression of TIP30 in 78 cases of ECC tissues and 78 cases of para-cancerous tissues were detected by immunohistochemistry.Results:The positive expression rate of TIP30 was 43.59％ and 75.64％ in ECC tissues and para-cancerous tissues,respectively.Differences were statistically significant (P＜ 0.05).The expression levels of TIP30 were not correlated with age,gender,degree of differentiation and tumor size(P＞0.05),but correlated with lymph node metastasis,distant metastasis and TNM staging(P＜ 0.05).The median overall survival of 78 ECC cases was 14.8 months,and it of TIP30 positive expression cases was 20.3 months,statistically higher than 11.5 months in TIP30 negative expression cases(P＜ 0.01).Conclusion:The downregulation of TIP30 is closely correlated with the development,metastasis and prognosis of ECC.TIP30 may be used as a molecular marker to identify and predict the progression,metastasis and prognosis of ECC.

Objective To investigate the clinical significance of contrast-enhanced transrectal ultrasound(CE-TRUS) in the perineal prostate biopsy. Methods A total of 116 patients was undergone prostate biopsy through the perineum under the direction of tansrectal ultrasound. Prostate biopsy standard was based on 2007 CUA revised guidelines for diagnosis and treatment of urological diseases.Color Doppler ultrasonography was used to check the prostate and to learn the prostate focal lesion,size, number and echo color Doppler flow characteristics. Of the 116 cases, 43 patients was undergone contrast-enhanced transrectal ultrasound. Results The biopsy results confirmed the diagnosis of prostate cancer was 64 cases, Benign prostatic hyperplasia was 52 cases. Of 43 cases who undergone contrast-enhanced transrectal ultrasound, Prostate cancer and Benign prostatic hyperplasia were 25 and 18 cases, respectively. CE-TRUS group and TRUS group showed no statistical difference between two groups. Analyzed the cases with PSA≤30 ng/ml, CE-TRUS group had a higher positive rate of biopsy (P=0.046). Conclusion TRUS guided transperineal biopsy of prostate might be an method for the diagnosis of prostate cancer with a higher accuracy rate. CE-TRUS can improve the biopsy positive rate of prostate cancer.

Adolescent ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Nasal Septal Perforation ; surgery ; Perioperative Care ; Young Adult

ObjectiveTo investigate the protective effect of transfected microRNA-146a (miR-146a) on mice with sepsis-induced acute lung injury (ALI) in vivo.Methods Twenty-four healthy male BALB/C mice were randomly divided into sham group, sepsis group, transfection group and transfection control group, eachn = 6. Mice in transfection group were given miR-146a agomir loaded by in vivo-jetPEITM via airway before reproduction of model, and mice in transfection control group were given negative control loaded by in vivo-jetPEITM only via airway. The septic model was reproduced by cecal ligation and puncture (CLP) 12 hours after transfection , and the mice in the sham group underwent laparotomy and closure only without ligation and puncture of the cecum. The mice of each group were sacrificed at 24 hours post-operation. The expression of miR-146a in lung tissue was determined by real time fluorescence quantitative reverse transcription-polymerase chain reaction (RT-qPCR), and the quantity of tumor necrosis factor-α (TNF-α) in the bronchial alveolar lavage fluid (BALF) was determined with enzyme-linked immunosorbent assay (ELISA). The wet/dry ratio of lung (W/D) was determined. The pathohistological changes in the lung were observed and scored. Results The expression of miR-146a showed a significant increase in sepsis group, transfection group and transfection control group, which were (3.56±0.43), (27.64±3.46) and (3.72±0.54) folds of that in sham group, respectively (P< 0.05 orP< 0.01). The miR-146a expression in transfection group was significantly increased compared with sepsis group and transfection control group (bothP< 0.01), but no statistical difference in the expression was found between sepsis group and transfection control group (P> 0.05). Compared with the sham group, higher level of TNF-αin the BALF was found in the sepsis group, transfection group and transfection control group (ng/L: 511.65±43.47, 305.74±34.76, 492.27±42.21 vs. 50.72±7.23, allP< 0.01). The level of TNF-α in transfection group was significantly lower than that in sepsis group and transfection control group (bothP< 0.01). Compared with the sham group, the W/D ratio of lung in sepsis group, transfection group and transfection control group showed a significant increase (6.11±0.32, 5.02±0.29, 6.05±0.43 vs. 4.18±0.10, allP< 0.01). The W/D ratio of lung in transfection group was significantly lower than that of sepsis group and transfection control group (bothP< 0.01). The lung injury score of transfection group was significantly lower than that of sepsis group and transfection control group (6.12±0.75 vs. 10.53±1.52, 9.73±1.08, bothP< 0.01).Conclusions miR-146a agomir loaded by in vivo-jetPEITM instillation into airway was able to increase the expression of miR-146a in the lung tissue of septic mice. Up-regulation of miR-146a inhibit the release of the inflammatory cytokine TNF-α stimulated by sepsis, and alleviate inflammatory reaction and lung tissue injury in mice with sepsis-induced ALI.

Objective To investigate the relationship of omentin-1 with adiponectin and inflammatory cytokines in type 2 diabetes (T2DM) patients with nonalcoholic fatty liver disease (NAFLD). Methods The serum levels of omentin-1 and adiponectin were assayed by enzyme-linked immunosorbent assay (ELISA) in patients of T2DM with NAFLD (group A, n=63), T2DM without NAFLD (group B, n=63)and normal control group (group C, n=70). At the same time the biochemical markers and inflammatory marker, such as tumor necrosis factor (TNF)-α, high-sensitivity C-reactive protein (hs-CRP) and interleukin 6(IL-6) were detected in three groups. The correlation analysis and multiple regression analysis were used to de-tect the association of omentin-1 with adiponectin and inflammatory markers. The logistic regression was used to analyze fac-tors influencing NAFLD in patients with T2DM. Results The serum levels of omentin-1 and adiponectin were significant-ly lower in group A [ (27.02±2.82)μg/L and (11.98±3.63) mg/L] than those of group B [(31.52±2.81)μg/L and (15.85±3.28) mg/L] and group C [(35.92±2.80)μg/L and (19.88±3.44) mg/L], and there were significantly lower levels of them in group B than those of group C (P<0.01). The plasma omentin-1 level was positively correlated with adiponectin and high density li-poprotein (HDL-C) in group A. Also the plasma omentin-1 level was negatively correlated with TNF-α, IL-6, fasting blood glucose (FBG), homeostasis model assessment of insulin resistance (HOMA-IR), visceral adipose tissue, waist, waist-to-hip ratio (WHR) and free fatty acid in group A (P<0.05 or P<0.01). Multiple stepwise regression analysis showed that adipo-nectin, TNF-αand IL-6 were independent factors influencing the level of plasma omentin-1. Logistic regression analysis showed that omentin-1 was one of independent factors influencing T2DM combined with NAFLD (P<0.01). Conclusion The incident of NAFLD in T2DM patients is related to the lower level of omentin-1, which may be influenced by adiponectin and inflammatory factors.