Analysis of the Electrophoretic Profiles of Prion Protein in Carcinous and Pericarcinous Lysates of Six Different Types of Cancers / 生物医学与环境科学（英文）

Objective@#To find the different electrophoretic profiles of prion protein in carcinous and individual pericarcinous tissues in lysates of gastric, colon, liver, lung, thyroid, and laryngeal cancers.@*Methods@#Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot were used to test the amounts and electrophoretic patterns of total PrP and the tolerance of PK (protease K) digestion among six various cancer tissue types.@*Results@#A mass of PrP signals with a large molecular weight were identified in the homogenates of peripheral tissues. The amounts and electrophoretic patterns of total PrP did not differ significantly between carcinous and pericarcinous tissues. PrPs in all types of the tested cancer samples were PK sensitive but showed diversity in the tolerance of PK digestion among various tissue types.@*Conclusions@#The study revealed that the included electrophoretic patterns of carcinous and pericarcinous tissues were almost similar. Unlike PrP-specific immunohistochemical assay, evaluation of PrP electrophoretic patterns in the peripheral organs and tissues by Western blot does not reflect tumor malignancy.

Functioning Evaluation for Patients with Chronic Diseases Using World Health Organization Disability Assessment Schedule 2.0 / 中国康复理论与实践

Objective:To test the reliability and validity of World Health Organization Disability Assessment Schedule (WHODAS 2.0) for assessment of functioning for people with chronic diseases. Methods:From December, 2017 to June, 2018, 346 patients with chronic diseases who received rehabilitation interventions in Huadong Hospital-Jing'an District Rehabilitation Medical Association were selected and evaluated with WHODAS 2.0, and re-evaluated after two weeks. According to the actual use of clinical rehabilitation, in order to improve the accuracy of functional measurement, the items had been added in the second domain Getting Around including Handling, Moving and Manipulating Objects, while added in the third domain Self Care including Caring for Body Parts and Toileting, and added in the fourth domain Getting Along with People including Establishing Formal Social Interpersonal Relationship, with a total of 40 items. The content reliability and structural validity of the scale with four items added were verified by internal consistency reliability, test-retest reliability and confirmatory factor analysis. Results:The Cronbach's α coefficient of the internal consistency reliability was 0.981, the Pearson coefficient of the test-retest reliability was 0.977 (P < 0.001). The final model of the scale with confirmatory factor analysis had good structural validity: the standardized factor loads between potential variables and corresponding measurement indicators were 0.710-0.960, and the standard errors were 0.023-0.066; Chi square degrees of freedom < 5, root-mean-square error of approximation < 0.1, standardized root mean square residual < 0.08, the comparatice fit index, normal of fit index, relative fit index, incremental fit index and Tucker-Lewis index all > 0.9; the reliability coefficients of the observed variables were > 0.5, the combined reliability of each potential variable > 0.6, and all the average variance extraction of each potential variable > 0.5, all P < 0.001, absolute value of the standardized residual < 3, Modification Index < 4. There was significant difference in the total score and scores of domains among the patients with different diseases (F > 10.21, P < 0.001) Conclusion:WHODAS 2.0 can be used as an assessment tool for the overall health and functioning for people with chronic diseases. Each item, including four new items added, had good content reliability and structural validity.

Expression of CD63 in Lung Tissue of Guinea Pigs Dying of Anaphylactic Shock / 法医学杂志

Objective To study the protein expression of cluster of differentiation 63 （CD63） in lung tissues of guinea pigs that died of anaphylactic shock and discuss the diagnostic value of CD63 for death from anaphylactic shock. Methods Twenty guinea pigs were randomly divided into control group, anaphylactic shock immediate death group, cold storage group （4 ℃ for 48 h） and frozen group （-20 ℃ for 7 d）. The animal model of guinea pigs that died of anaphylactic shock was established with human mixed serum injection. The expression changes of CD63 protein and CD63 mRNA in lung tissues were detected by hematoxylin-eosin （HE） staining, immunohistochemical staining, Western blotting, enzyme-linked immunosorbent assay （ELISA） and real-time RT-PCR. Results HE staining results showed congestion, and edema of lung tissues, and eosinophil infiltration in the anaphylactic shock groups. Western blotting analysis results showed that the expression of CD63 protein in the lung tissues of guinea pigs that died of anaphylactic shock was significantly higher than that in the control group （P<0.05）. Comparison between the anaphylactic shock groups was made, and the differences had no statistical significance. The results of immunohistochemical staining and real-time RT-PCR were consistent with that of Western blotting. ELISA results showed that CD63 protein expression in the immediate death group was higher than that in the control group （P<0.05）. Conclusion The expression of CD63 protein and CD63 mRNA in the lung tissues of guinea pigs that died of anaphylactic shock is significantly enhanced. Animal carcasses which were put in cold storage for 48 h and frozen for 7 d do not affect the examination of the above indicators. CD63 protein is expected to become an auxiliary diagnostic indicator of death from anaphylactic shock.

Biomechanical comparison of gourd-shaped LCP versus LCP for fixation of comminuted tibial shaft fracture / 华中科技大学学报（医学）（英德文版）

The purpose of this study was to compare monotonic biomechanical properties of gourd-shaped LCP fixation with LCP fixation of human tibial shaft in gap fracture mode. Twenty paired fresh cadaveric human tibias were randomly divided into 4 groups (5 pairs each): (1) axial loading single cycle to failure testing, (2) torsion single cycle to failure testing, (3) 4-point bending single cycle to failure testing, and (4) dynamic 4-point bending testing. A 7-hole 4.5 mm gourd-shaped LCP was secured on the anteromedial surface of 1 randomly selected bone from each pair, respectively, using 6 locking screws in the 1st, 2nd, 3rd, 5th, 6th and 7th hole with the middle hole unfilled and just located at the mid-diaphysis of the tibia. A 7-hole 4.5 mm LCP was secured on the other bone with the same method. Standard AO/ASIF techniques were used. After fixation finished, a 10 mm gap in the mid-diaphysis of tibia was created, centrally located at the unfilled hole. The axial, torsional, and bending stiffness and failure strengths were calculated from the collected data in static testings and statistically compared using paired Student's t-test. The 4-point bending fatigue lives of the two constructs were calculated from the dynamic testing data and also statistically compared using paired Student's t-test. Failure modes were recorded and visually analyzed. P<0.05 was considered significant. Results showed that the axial, torsional and bending stiffness of gourd-shaped LCP construct was greater (4%, 19%, 12%, respectively, P<0.05) than that of the LCP construct, and the axial, torsional and bending failure strengths of gourd-shaped LCP construct were stronger (10%, 46%, 29%, respectively, P<0.05) than those of the LCP construct. Both constructs failed as a result of plate plastic torsional deformation. After axial loading and 4-point bending testings, LCP failed in term of an obvious deformation of bent apex just at the unfilled plate hole, while the gourd-shaped LCP failed in term of a deformation of bent arc between the 3rd and 5th holes, which indicated a more consistent stress distribution on gourd-shaped LCP. Fatigue life of gourd-shaped LCP construct was significantly greater than LCP construct (153 836±2 228 vs. 132 471±6 460 cycles, P<0.01). All constructs failed as a result of fracture of the plate through the compression hole of the unfilled combination screw hole. The biomechanical testing showed that gourd-shaped LCP can provide greater stiffness and strength, and longer fatigue life than LCP. The gourd-shaped LCP may be more advantageous mechanically and may reduce the plate breakage rate clinically.

Biomechanical comparison of gourd-shaped LCP versus LCP for fixation of comminuted tibial shaft fracture / 华中科技大学学报（医学）（英德文版）

The purpose of this study was to compare monotonic biomechanical properties of gourd-shaped LCP fixation with LCP fixation of human tibial shaft in gap fracture mode. Twenty paired fresh cadaveric human tibias were randomly divided into 4 groups (5 pairs each): (1) axial loading single cycle to failure testing, (2) torsion single cycle to failure testing, (3) 4-point bending single cycle to failure testing, and (4) dynamic 4-point bending testing. A 7-hole 4.5 mm gourd-shaped LCP was secured on the anteromedial surface of 1 randomly selected bone from each pair, respectively, using 6 locking screws in the 1st, 2nd, 3rd, 5th, 6th and 7th hole with the middle hole unfilled and just located at the mid-diaphysis of the tibia. A 7-hole 4.5 mm LCP was secured on the other bone with the same method. Standard AO/ASIF techniques were used. After fixation finished, a 10 mm gap in the mid-diaphysis of tibia was created, centrally located at the unfilled hole. The axial, torsional, and bending stiffness and failure strengths were calculated from the collected data in static testings and statistically compared using paired Student's t-test. The 4-point bending fatigue lives of the two constructs were calculated from the dynamic testing data and also statistically compared using paired Student's t-test. Failure modes were recorded and visually analyzed. P<0.05 was considered significant. Results showed that the axial, torsional and bending stiffness of gourd-shaped LCP construct was greater (4%, 19%, 12%, respectively, P<0.05) than that of the LCP construct, and the axial, torsional and bending failure strengths of gourd-shaped LCP construct were stronger (10%, 46%, 29%, respectively, P<0.05) than those of the LCP construct. Both constructs failed as a result of plate plastic torsional deformation. After axial loading and 4-point bending testings, LCP failed in term of an obvious deformation of bent apex just at the unfilled plate hole, while the gourd-shaped LCP failed in term of a deformation of bent arc between the 3rd and 5th holes, which indicated a more consistent stress distribution on gourd-shaped LCP. Fatigue life of gourd-shaped LCP construct was significantly greater than LCP construct (153 836±2 228 vs. 132 471±6 460 cycles, P<0.01). All constructs failed as a result of fracture of the plate through the compression hole of the unfilled combination screw hole. The biomechanical testing showed that gourd-shaped LCP can provide greater stiffness and strength, and longer fatigue life than LCP. The gourd-shaped LCP may be more advantageous mechanically and may reduce the plate breakage rate clinically.

The analysis of human papillomavirus infection in lip squamous cell carcinoma patients / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To analyze the infection of human papillomavirus in lip squamous cell carcinoma patients.</p><p><b>METHODS</b>The pathological samples of 9 clinical diagnosed lip cancer patients were collected. Lunimex and PCR techniques were used to detect the HPV gene infection and immunohistochemistry method was used to analyze the HPV protein expression in the samples.</p><p><b>RESULTS</b>In the 9 cases, 1 was positive for HPV16 gene and 7 were positive for HPV16/18 E6 protein expression. The total positive rate was about 8/9.</p><p><b>CONCLUSION</b>The high HPV infection rate in lip cancer patients in the study indicated indirectly that the importance of the direct contact to the infection of HPV what was the basis for pathogenesis of the lip squamous cell carcinoma.</p>

Evaluation of the function of autotransplanted parathyroid tissues / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To evaluate the function autotransplanted parathyroid tissues in thyroid surgery.</p><p><b>METHODS</b>The control group comprised 120 volunteers with normal parathyroid glands in whom serum parathyroid hormone (PTH) levels in blood samples taken from the bilateral elbow head veins. The experimental group comprised 34 patients in whom the parathyroid glands, which were mistakenly cut or could not be preserved during thyroid surgery because of ischemia, were fragmented and autografted into the brachioradialis muscle of the nondominant forearm. On the day of surgery and at 3 days, 7 days, and 2 months postoperatively, contrast imaging and detection of serum PTH levels were performed to evaluate the function of the transplanted parathyroid tissues.</p><p><b>RESULTS</b>In the control group, the mean value of the difference between the bilateral brachiocephalic vein PTH levels was (1.19 ± 0.98) ng/L (maximum 4.52 ng/L). In this study, twice the maximum value (9.04 ng/L) was taken as the effective standard. Based on the 9.04 ng/L effective value, the effective number was 26 patients and the effective rate was 76.5% at 2 months postoperatively in the 34 patients of the experimental group.</p><p><b>CONCLUSIONS</b>The autotransplanted parathyroid tissues showed their functions in most patients, therefore, parathyroid gland autotransplantation is an effective method of preserving function of parathyroid glands that are free or severely ischemic in thyroid surgery.</p>

Diagnostic and application value of 64-slice spiral CT scanning in preoperative staging of esophageal cancer / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To investigate the diagnostic and application value of pre-operative 64-slice spiral CT evaluation in operation selection for esophagus cancer.</p><p><b>METHODS</b>Multi-slice computed tomography (MSCT) was conducted in 50 patients with esophageal cancer before operation, using the work station for after-treatment to get CT virtual endoscopy (CTVE), multiplanar reconstruction (MRP), shaded surface display (SSD) and Raysum images, and combined with the transect images to record the preoperative MSCT staging and to predict the operation scheme, and compared with the postoperative pathological staging and the actual operational plan.</p><p><b>RESULTS</b>The diagnostic sensitivity of MSCT for preoperative T staging was 100.0% (50/50), while the N staging was 80.0% (16/20). According to the MSCT prediction, the resection rate of esophageal cancer was 96.0% (48/50). Through the preoperative MSCT evaluation, the accuracy of CT-TNM stage was 90.0%, highly consistent with the pathological TNM stage (Kappa = 0.811, P < 0.05).</p><p><b>CONCLUSIONS</b>MSCT can effectively display the shape, size and position of the tumor, determine the tumor invasion range, lymph node metastasis and distant metastasis, etc., make preoperative evaluation for esophagus cancer patients and provide evidence for clinicians to predict the operation scheme for esophagus cancer.</p>

Relationship between urinary 1-hydroxypyrene level and peripheral blood lymphocyte chromosomal damage among coke oven workers / 中华劳动卫生职业病杂志

<p><b>OBJECTIVE</b>To investigate the relationship between the urinary 1-hydroxypyrene level and cytokinesis-block micronucleus in peripheral blood lymphocyte in coke oven workers.</p><p><b>METHODS</b>One hundred and fifty-eight workers from a coke plant and 158 referents without occupational PAHs exposure were recruited in this study. Urnary level of 1-hydroxypyrene was measured by alkaline hydrolysis combined with high performance liquid chromatography as an internal exposure dose, and the chromosomal damage of peripheral blood lymphocyte were evaluated with cytokinesis-block micronucleus (CBMN) method. Personal information including occupational history, age, sex, smoking and alcohol drinking, was collected by questionnaire.</p><p><b>RESULTS</b>The lymphocyte chromosomal damage level expressed as frequency of CBMN in coke oven workers was significantly higher than that of controls (3.32 ± 2.90 vs 0.57 ± 0.88, P < 0.01) after adjusting for sex, age, smoking and alcohol drinking, and correlation between urinary 1-hydroxypyrene concentrations and frequency of CBMN was found (Spearman Partial correlation coefficient = 0.28, P < 0.05) in coke oven workers. Three hundreds and sixteen subjects were divided into three groups by their urine 1-hydroxypyrene level (expressed as 0.11 ∼ 0.70, 0.71 ∼ 4.09 and 4.10 ∼ 24.74 µmol/mol Cr). After adjusting for age, sex, smoking and alcohol drinking by multiple nonparametric analysis of covariance, the frequency of CBMN in the groups of 0.71 ∼ 4.09 and 4.10 ∼ 24.74 µmol/mol C were 1.89 ± 2.37 and 3.29 ± 2.36, significantly higher than that in the group of 0 ∼ 0.70 µmol/mol Cr (0.56 ± 0.89).</p><p><b>CONCLUSIONS</b>Under present PAHs exposure levels, the Cytokinesis-block micronucleus test could detect PAHs-induced genotoxicity in coke oven workers.</p>

Characteristic of mandibular muscle activity in patients with obstructive sleep hypopnea apnea syndrome / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To establish an index that can evaluate the genioglossus muscle activity and investigate the relationship between the genioglossus muscle activity and the severity of patients with obstructive sleep hypopnea apnea syndrome (OSAHS).</p><p><b>METHODS</b>Mandibular muscle electromyography (EMG) and polysomnography (PSG) were used in fifty patients with OSAHS. The difference of mandibular muscle activity between the twice muscle activity of fifteen patients and between in non rapid eye movement (NREM) stage and rapid eye movement (REM) stage on fifty patients were analyzed. The relationship between the index and age, body mass index (BMI), apnea hypopnea index (AHI), and the lowest oxygen saturation was evaluated.</p><p><b>RESULTS</b>There was no statistical difference between the twice muscle activity in fifteen patients. The average index in NREM was 1.84 +/- 0.64 (x(-) +/- s, the same below), in REM was 1.68 +/- 0.48. The difference of mandibular muscle activity between in NREM stage and REM stage was significant (t = 2.849, P < 0.05). By pearson test there was relationship between the index and age and AHI, the correlation coefficient was -0.336, -0.339, -0.338 and P < 0.05. There was no relationship between the index and BMI and the lowest oxygen saturation.</p><p><b>CONCLUSIONS</b>This index that is stable can evaluate the mandibular muscle activity to some degree.</p>

The quality assessment of the interventional radiololgy publications in Chinese journal of radiology using the randomized controlled trials / 中华放射学杂志

Objective To assess the quality of reporting randomized controlled trials published in Chinese journal of radiology from 2000 to 2005.Methods A manual search was performed and 22 checklists of CONSORT statements and other self-established criteria were applied.Results Six volumes and 72 issues were investigated.There were total trials of 236 in 2186 literatures,and finally 3 randomized controlled trials(RCTs)(1.27%)were identified.In the 3 RCTs,there were 3 trials with methods of randomization,1 with endpoints measurement,1 with multi-centre,but without the prior calculation of sample size,blind methods,statistically probability,participant flow,compliance and negative results.Conclusion The quality of reporting randomized controlled trials of interventional radiology has been improved,but it did not meet fully the CONSORT statement.

Inhibition of midazolam on macroscopicsodium currents in rat sympathetic neurons / 中国临床药理学与治疗学

Aim The effects of midazolam on the whole-cell sodium currents in rat sympathetic neurons were studied to explore the mechanisms where by midazolam mediates hypotension. Methods Whole-cell patch-clamp recordings were performed on enzymatically isolated rat superior cervical sympathetic neurons. Results Midazolam dose-dependently blocked the whole-cell sodium currents evoked by a voltage step to 0 mV from a holding potential of -80 mV with a mean drug concentration required to produce 50% current inhibition (IC50) values of 18.35 ?mol?L-1; Clinically relevant concentration of midazolam(0.3 ?mol?L-1) reduced sodium peak currents by 19.98%(P