Changes of high mobility group protein B1 in condyloma acuminatum and its clinical significance / 中国医师进修杂志

Objective:To investigate the changes and clinical significance of high mobility group protein B1 (HMGB1) in condyloma acuminatum (CA).Methods:Sixty four patients with initial CA(initial group) and 48 patients with recurrent CA(recurrent goup) treated in the Second Affiliated Hospital of PLA Air Force Military Medical University Hospital from January 2019 to November 2020 were included. In the same period, 31 patients who underwent circumcision and 19 female underwent sexual organ cosmetic plastic surgery were taken as the control group, and the normal foreskin and healthy vulva were collected. The expression of HMGB1 in wart was detected by real-time quantitative polymerase chain reaction(RT-PCR), and the expression of soluble apoptosis related factor ligand (sFasL), cell lymphoma-2 gene (Bcl-2), soluble apoptosis related factor (SFAS) and Survivin, caspase-3 were detected. At the same time, serum interleukin (IL) - 6, IL-17, IL-23 and tumor necrosis factor - α (TNF- α) were detected by enzyme-linked immunosorbent assay(ELISA).Results:The expression of HMGB1 mRNA in the warts of patients in the initial group, recurrence group and control group were 1.96 ± 0.20, 1.53 ± 0.14, 1.05 ± 0.11, there was statistical difference ( F = 15.20, P<0.05) ; the expression of HMGB1 mRNA in the warts of patients in the initial group was significantly higher than that in the recurrence group and the control group ( P<0.05), and the recurrence group was also significantly higher than that in the control group ( P<0.05). The mRNA expressions of sFas, Bcl-2, sFasL and caspase-3 in the warts of patients in the initial group were significantly lower than those in the recurrence group and the control group: 0.52 ± 0.08 vs. 0.82 ± 0.16, 1.10 ± 0.19; 0.50 ± 0.05 vs. 0.79 ± 0.13, 1.08 ± 0.21; 0.47 ± 0.06 vs. 0.81 ± 0.15, 1.01 ± 0.19; 0.35 ± 0.04 vs. 0.68 ± 0.09, 0.91 ± 0.16, P<0.05; and the recurrence group were also significantly lower than those in the control group ( P<0.05). The expression of Survivin mRNA in the warts of patients in the initial group was significantly higher than those in the recurrence group and the control group: 2.14 ± 0.40 vs. 1.60 ± 0.27, 0.99 ± 0.18, P<0.05, and the recurrence group was also significantly higher than that in the control group ( P<0.05). The serum levels of TNF-α and IL-6 in the initial group were significantly lower than that in the recurrence group and the control group: (20.08 ± 1.95) μg/L vs. (26.93 ± 2.74), (37.65 ± 3.83) μg/L; (31.05 ± 3.24) μg/L vs. (38.13 ± 3.76), (45.98 ± 4.69) μg/L, P<0.05; and the recurrence group were also significantly lower than those in the control group ( P<0.05). The serum levels of IL-17 and IL-23 in the primary group were significantly higher than those in the recurrence group and the control group: (423.71 ± 28.68) ng/L vs. (384.26 ± 21.70) and (335.43 ± 19.65) ng/L; (289.50 ± 18.53) ng/L vs. (251.07 ± 15.96) and (214.67 ± 13.20) ng/L, P<0.05; and the recurrence group were also significantly higher than those in the control group ( P<0.05). The results of correlation analysis showed that the mRNA expression of HMGB1 in the warts of CA patients were negatively correlated with the mRNA expression of caspase-3, sFas, Bcl-2 and sFasL in the warts ( r = - 0.602, - 0.734, - 0.692, - 0.717, P<0.05), and was positive correlation with Survivin mRNA expression ( r = 0.645, P<0.05); and were positive correlation with the contents of IL-17 and IL-23 in serum ( r = 0.673, 0.685, P<0.05), and negatively correlated with the contents of TNF-α and IL-6 ( r = - 0.698, - 0.764, P<0.05). Conclusions:HMGB1 is obviously abnormal in the warts of patients with condyloma acuminatum, and is closely related to apoptosis, immune and inflammation-related factors, and may be jointly involved in the occurrence and recurrence of CA.

Relationship between behavior and lifestyle of left-behind children and anxiety symptoms in Shangrao City / 中国学校卫生

Objective@#To analyze the correlation between behavior and lifestyle factors and anxiety symptoms of left-behind children, and to provide evidence for mental health intervention of left-behind children.@*Methods@#1 188 children aged from 13 to 18 (617 non-left-behind children and 571 left-behind children) in B County of Shangrao City, Jiangxi Province were evaluated with Generalized Anxiety Disorder Scale (GAD-7). Meanwhile, physical activity, TV watching time, computer usage time, dietary behavior, sleep and other behavioral lifestyle factors of left-behind children were investigated by questionnaire.@*Results@#The detection rate of anxiety among left-behind children (66.0%) was higher than that of non-left-behind children (60.5%). The detection rates of mild, moderate, and severe anxiety were 26.3%, 15.4% and 24.3%, respectively. Under the condition of controlling age and gender, Logistic regression analysis showed that left-behind childrens anxiety symptoms and computer usage time>3 h/d (mild anxiety, OR=3.00, 95%CI=1.27-4.16; moderate anxiety, OR=4.09, 95%CI=1.55-10.78; severe anxiety, OR=3.44, 95%CI=1.46-8.11), mobile phone usage time >3 h/d (mild anxiety, OR=4.93, 95%CI=2.71-8.94; moderate anxiety, OR=5.93, 95%CI=2.98-11.79; severe anxiety, OR=7.11, 95%CI=3.85-13.15), skipping breakfast behavior (moderate anxiety, often skipping, OR=6.09, 95%CI=1.59-23.36; severe anxiety, often skipping, OR=5.49, 95%CI =1.68-7.97, sometimes eat breakfast, OR=2.68, 95%CI=1.10-6.53) was positively correlated; with appropriate sleeping time (moderate anxiety, OR=0.28, 95%CI=0.13-0.60) was negatively correlated.@*Conclusion@#The unhealthy behavior and lifestyle of left-behind children may be a potential risk factor for anxiety symptoms.

Contamination state of Staphylococcus aureus from toilets of primary schools in Guangzhou / 中国学校卫生

Objective@#To investigate the contamination, antimicrobial resistance and virulence genes of S. aureus from toilets of primary schools in Guangzhou.@*Methods@#The surface samples of toilets were collected from eight primary schools in Guangzhou from May to July 2016. The standard microbiological assays, disk diffusion methods and PCR technique were used for the isolation and identification, antimicrobial resistance and virulence genes of S. aureus .@*Results@#The contamination rate of S. aureus and MRSA was 6.25% and 3.13%, respectively. There was significant difference in the contamination rate of S. aureus among different sampling sites ( χ 2=15.15, P <0.01) and the highest contamination rate was on the ground (15.00%).The most predominant antibiotic for S. aureus was penicillin (100.00%) and the proportions of resistant to teicoplanin, erythromycin,rifampicin, clindamycin and linezolid were more than 75.00%.The multidrug resistant rate of S. aureus was 85.00%.The detection rate of virulence genes of S. aureus was sea (50.00%), tst (30.00%), etb (15.00%), eta (10.00%), seb (10.00%) and pvl (5.00%), respectively.@*Conclusion@#The contamination rate of S. aureus from toilets of primary schools in Guangzhou is in a lower level among similar researches. However, the contamination of MRSA is serious, which accounts for half of S. aureus . In addition, S. aureus isolates show high multi-drug resistant rate and high detection rate of virulence genes.

Effects of Du Meridian Moxibustion on Ubiquitin Proteasome Pathway in Skeletal Muscle of Aging Rats / 中国康复理论与实践

@#Objective To study the role of ubiquitin proteasome pathway in Du Meridian moxibustion for skeletal muscle aging. Methods A total of 30 Sprague-Dawley rats were randomly separated into control group (n=10), model group (n=10) and moxibustion group (n=10). The model group and the moxibustion group were subcutaneously injected D-galactose 125 mg/kg daily for six weeks, while the control group was injected the same volume of saline. Then the moxibustion group was cauterized on Du Meridian 20 minutes a day for 20 days. The expression of ubiquitin, muscle RING finger 1 (MuRF1) and muscle atrophy F-box (MAFbx) in erector spinae were tested with Western blotting. Results The expression of ubiquitin, MuRF1 and MAFbx increased in the model group compared with that of the control group (P<0.05), decreased in the moxibustion group compared with that of the model group (P<0.05).Conclusion The Du Meridian moxibustion may regulate ubiquitin proteasome pathway to inhibit the degradation of protein, and delay muscular atrophy.

Mid-term effects of arthroscopic anatomical reconstruction of double bundles of the anterior cruciate ligament / 中华创伤骨科杂志

Objective To investigate the mid-term clinical outcomes of arthroscopic anatomical re-construction of double bundles of the anterior cruciate ligament ( ACL ) . Methods The clinical data of 78 patients diagnosed with ACL rupture from April 2012 to July 2014 were analyzed retrospectively. They were 60 males and 18 females, aged from 19 to 56 years ( mean, 26. 8 years ) . The time from injury to surgery ranged from one week to 23 months ( mean, 5. 8 months ) . All of them obtained positive results in anterior drawer test and Lachman test preoperatively. Their preoperative KT-1000 examinations showed an average side-to-side difference of 8. 29 ± 1. 81 mm in anterior laxity. They were all treated with arthroscopic anatomical recon-struction of double bundles of the anterior cruciate ligament using autologous hamstrings. The International Knee Documentation Committee ( IKDC ) and Lysholm scores were used to assess their knee function at the last follow-up. Results All the 78 patients were followed up for 34. 6 months on average ( range, from 25 to 56 months ) . At the last follow-up, the IKDC and Lysholm scores were significantly increased from preoper-ative 42. 6 ± 9. 5 and 44. 4 ± 8. 5 to postoperative 92. 9 ± 2. 8 and 94. 2 ± 3. 4, respectively ( P <0. 05 ) . The Lachman test was negative in 73 cases ( 93. 6％) and the pivot shift test was negative in 69 cases ( 88. 5％) . The KT-1000 examinations showed that the side-to-side difference in anterior laxity averaged 1. 47 ± 0. 68 mm, significantly improved from the preoperative values ( P <0. 05 ) . At their last follow-up, 29 patients underwent MRI scans which showed continuity of the anteromedial and posterolateral bundles of the anterior cruciate liga-ment. Conclusion The arthroscopic anatomical reconstruction of double bundles of the anterior cruciate ligament can restore the knee stability and achieve fine mid-term clinical outcomes.

Effects of Electro-acupuncture at “Weizhong” (BL40) on Expressions of Fas and FasL in Rats with Lumbar Disc Degeneration / 中国中医药信息杂志

Objective To observe the effects of electro-acupuncture (EA) at “Weizhong” (BL40) on expressions of Fas and FasL in rat models with lumbar disc degeneration; To discuss its mechanism of action.MethodsThirty SD rats were randomly divided into sham-operationgroup, model group and EA group, with 10 rats in each group. The sham-operation group was treated with sham operation to incide local skin; the model and EA groups established rat model of lumbar disc degeneration by puncturing the annulus fibrosus. Four weeks after modeling, rats in the sham-operation and model groups received fixed treatment under identical condition, and rats in the EA group were treated with EA at “Weizhong” (BL40) in 20 minutes, once a day, for 4 weeks. After treatment, Western blot and RT-PCR technology were used to test the protein and mRNA expression levels of Fas and FasL.ResultsThe expressions of Fas and FasL in the model group were higher than those in the sham-operation group (P<0.05); protein and mRNA expression levels of Fas and FasL in the EA group were lower than those in the model group (P<0.05). ConclusionEA at “Weizhong” (BL40) can reduce the expressions of Fas and FasL to inhibit the development of lumbar disc degeneration.

Effects of Electroacupuncture at Weizhong on Expression of Bcl-xL and Bax in Rats with Lumbar Disc Degeneration / 中国康复理论与实践

@#Objective To explore the effect of electroacupuncture at Weizhong (BL40) acupoint on the expression of Bcl-xL and Bax in rats with lumbar disc degeneration. Methods Thirty male adult Sprague-Dawley rats were randomly divided into sham-operated group (n= 10), model group (n=10), and electroacupuncture group (n=10). The lumbar disc degeneration model was established by puncturing the annulus fibrosis in the model group and electroacupuncture group. One month after modeling, the electroacupuncture group was electroacupunctured at Weizhong acupoint for four weeks. HE staining was used to observe the pathological changes. Immunohistochemical staining was used to observe the expression of Bax in the lumbar disc tissue. Western blotting was used to detect the expression of Bcl-xL and Bax protein. Results HE staining showed that the degrees of lumbar disc degeneration from light to severe was ranged as: the sham-operated group, the electroacupuncture group and the model group. The expression of Bcl-xL was lower (P<0.05), and the expression of Bax was higher (P<0.01) in the model group than in the sham-operated group, which was opposite (P<0.01) in the electroacupuncture group than in the model group. Conclusion Electroacuponcture at Weizhong may upregulate the expression of Bcl-xL and downregulate the expression of Bax in rats with lumbar disc degeneration.

Early diagnosis of experimental bone nonunion：measurement of N-terminal telopeptide of type I collagen and quantitative CT determination of bone mineral density / 中国组织工程研究

BACKGROUND:Currently, X-ray examination is mainly used for diagnosis of nonunion. However, this method that relies only on the clinician’s experience and degree of calus mineralization has less accuracy because it is vulnerable to projection, processing conditions and subjective factors. OBJECTIVE:To establish an animal model of nonunion and to detect the variation of biochemical markers and bone mineral density. METHODS: Twenty New Zealand white rabbits were randomly divided into two groups, and bone defect and fracture models were made in the midshaft of the forearm radius, respectively. X-ray examination of the forearm, quantitative CT measurement of bone mineral density and serological test were carried out before and at 2, 3, 4, 5, 6, 7, 8, 10, 12 weeks after surgery.RESULTS AND CONCLUSION:Postoperative X-ray films showed that the in the bone defect group, a little calus formed in three rabbits at 2 weeks, the calus formed stably at 5 weeks, but there was stil no healing at 8 weeks; in the fracture group, the fracture line was blurred at 2 weeks and a large number of caluses formed at 6-8 weeks. Compared with the fracture group, the value of bone mineral density in the bone defect group began to decrease significantly at 5 weeks after surgery. Results from the serological test showed that in the bone defect group, the activity of bone-specific alkaline phosphatase increased after surgery, reached peak at 4 weeks, began to decrease at 5 weeks and became stable at 6 weeks; the activity of tartrate-resistant acid phosphatase 5b increased after surgery, peaked at 4 weeks, then decreased and stabilized basicaly; the expression of N-terminal telopeptide of type I colagen decreased significantly at 5 weeks after surgery and became stable at 6 weeks. These findings indicate that the systematic monitoring of changes in bone mineral density and biochemical indicators such as bone-specific alkaline phosphatase, tartrate-resistant acid phosphatase 5b and type I colagen N-terminal telopeptides may help to reflect the early progress of rabbit nonunion.

C-and N-terminal telopeptides of type I collagens, osteocalcin and bone-specific alkaline phosphatase used for the early diagnosis of bone nonunion / 中国组织工程研究

BACKGROUND:Detecting the serum levels of biochemical markers to assess bone fractures is simple, mini-invasive and specific. Thereafter, to predict bone nonunion by choosing an appropriate marker has become a hotspot. OBJECTIVE:To establish an animal model of bone nonunion and explore the changing rules of the biochemical markers during the process of nonunion. METHODS:Twenty New Zealand white rabbits aged 5-6 months were enrol ed and divided into two groups. In bone defect group, a 15-mm length of bone (including the periosteum) was removed from the left mid-radius, and the medul ary cavities were closed with bone wax. In bone fracture group, the mid-radius was fractured. X-ray examination was taken and blood samples were extracted preoperatively and at 2, 3, 4, 5, 6, 7, 8, 10, and 12 weeks after surgery. The serum levels of osteocalcin and bone-specific alkaline phosphatase (BSAP) as markers of bone formation, and C-terminal telopeptide of type I col agen (CTX), N-terminal telopeptide of type I col agen (NTX), and tartrate-resistant acid phosphatase 5b (TRACP 5b) as markers of bone resorption, were measured using biotin double-antibody sandwich ELISA. RESULTS AND CONCLUSION:In the bone defect group, the bone metabolism was at a high level, suggesting that the early diagnosis of bone nonunion depends on several biochemical indicators. In the bone defect group, the serum level of CTX peaked at 5 weeks, and the serum levels of osteocalcin, BSAP and NTX decreased obviously at 4 or 5 weeks, while the serum TRACP 5b concentration did not change significantly, indicating that al above markers except TRACP 5b sensitively reflect the bone turnover in vivo. Further studies are needed to determine whether systematic monitoring of the biochemical markers can reflect the bone turnover effectively and can be used for the early diagnosis of nonunion in the rabbit model.

Effects of Electroacupuncture at Sanyinjiao and Yinlingquan Acupoints on Muscle Repair and Expression of Growth Factors in Gastrocnemius Muscle Damaged Rats / 中国康复理论与实践

@#Objective To investigate the effects of electroacupuncture at Sanyinjiao (SP6) and Yinlingquan (SP9) on muscle repair in the gastrocnemius muscle damaged rats and its possible mechanism. Methods 30 male Sprague-Dawley rats were randomly divided into blank group (n=10), model group (n=10) and electroacupuncture group (n=10). The latter 2 groups were modeled with gastrocnemius muscle crush injury. The electroacupuncture group received electroacupuncture at Sanyinjiao and Yinlingquan for 14 days. Their gastrocnemius was observed with HE staining, and the expressions of basic fibroblast growth factor (bFGF) and insulin-like growth factor-1 (IGF-1) in gastroc-nemius tissues and the serum were determined with immunochemical assay and enzyme-linked immunosorbent assay (ELISA). Results Compared with the model group, there was less damage in the electroacupuncture group, with more expression of bFGF and IGF-1 in tis-sues (P<0.01) and serum (P<0.05). Conclusion Electroacupuncture can promote muscle repair after gastrocnemius muscle damage in rats, which may be related to the increase of the bFGF and IGF-1 expression in gastrocnemius tissue and serum.

Molecular mechanism of SCARB2-mediated attachment and uncoating of EV71

Unlike the well-established picture for the entry of enveloped viruses, the mechanism of cellular entry of non-enveloped eukaryotic viruses remains largely mysterious. Picornaviruses are representative models for such viruses, and initiate this entry process by their functional receptors. Here we present the structural and functional studies of SCARB2, a functional receptor of the important human enterovirus 71 (EV71). SCARB2 is responsible for attachment as well as uncoating of EV71. Differences in the structures of SCARB2 under neutral and acidic conditions reveal that SCARB2 undergoes a pivotal pH-dependent conformational change which opens a lipid-transfer tunnel to mediate the expulsion of a hydrophobic pocket factor from the virion, a pre-requisite for uncoating. We have also identified the key residues essential for attachment to SCARB2, identifying the canyon region of EV71 as mediating the receptor interaction. Together these results provide a clear understanding of cellular attachment and initiation of uncoating for enteroviruses.

Construction of the 'trinity' curriculum system of medical english majors / 国际中医中药杂志

To maintain the competitive superiority,the medical english majors should optimize and construct the characteristic curriculum system in order to cultivate high-quality professionals of medical english.Taking the medical english major of Beijing University of Chinese Medicine for an example,this paper discusses the theoretic consideration and practice in constructing the characteristic ‘trinity’ curriculum system of medical english majors,hoping that more attention can be paid to its further development.

International communication capabilities of traditional Chinese medicine professionals / 国际中医中药杂志

International communication capabilities of traditional Chinese medicine professionals are closely related to the publicity of Chinese medical culture and know-how.Based on the interview results as well as literature research,this paper discusses the qualification of traditional Chinese medicine professionals and proposes five essential elements constituting their international communication capabilities:knowledge and skills of Chinese medicine,foreign language proficiency,knowledge and skills of international communication,a global perspective as well as personal traits.It is expected that it may contribute to the syllabus design,in-service training and talents cultivation in Chinese medical colleges and universities.

Functional annotation from the genome sequence of the giant panda

The giant panda is one of the most critically endangered species due to the fragmentation and loss of its habitat. Studying the functions of proteins in this animal, especially specific trait-related proteins, is therefore necessary to protect the species. In this work, the functions of these proteins were investigated using the genome sequence of the giant panda. Data on 21,001 proteins and their functions were stored in the Giant Panda Protein Database, in which the proteins were divided into two groups: 20,179 proteins whose functions can be predicted by GeneScan formed the known-function group, whereas 822 proteins whose functions cannot be predicted by GeneScan comprised the unknown-function group. For the known-function group, we further classified the proteins by molecular function, biological process, cellular component, and tissue specificity. For the unknown-function group, we developed a strategy in which the proteins were filtered by cross-Blast to identify panda-specific proteins under the assumption that proteins related to the panda-specific traits in the unknown-function group exist. After this filtering procedure, we identified 32 proteins (2 of which are membrane proteins) specific to the giant panda genome as compared against the dog and horse genomes. Based on their amino acid sequences, these 32 proteins were further analyzed by functional classification using SVM-Prot, motif prediction using MyHits, and interacting protein prediction using the Database of Interacting Proteins. Nineteen proteins were predicted to be zinc-binding proteins, thus affecting the activities of nucleic acids. The 32 panda-specific proteins will be further investigated by structural and functional analysis.

Comparison of minimally invasive percutaneous iliosacral screw and reconstruction plate fixation in treating unstable pelvic fractures / 中华骨科杂志

ObjectiveTo compare the clinical effect of percutaneous iliosacral screws osteosynthesis (PISO) and open reduction internal reconstruction plate fixation in treating unstable pelvic fractures combined with sacroiliac joint dislocation,and evaluate their safety and practicality.MethodsFrom March 2004 to October 2010,37 patients with vertical unstable pelvic fractures were admitted to our department.Twenty cases were treated with percutaneous sacroiliac screw fixation and 17 cases were performed opened reduction and internal reconstruction plate fixation under C-arm X-ray's guide.The perioperative parameters and postoperative imaging indexes were compared and analyzed.ResultsAll patients were followed up for 6 months to 26 months,with an average of 15 months.There were statistical significances between the PISO group and open reduction internal fixation group in operation time,blood loss,postoperative pain,mean fever time and hospital stay.The two groups showed no significant difference on postoperative X-evaluation of reduction effect.The average healing time was 3.2 months and the difference was not statistically significant between two groups.PISO group had no complications such as infection,bent nails or broken nails.ConclusionThrough compared and analyzed the two groups in treating unstable pelvic fractures,the percutaneous sacroiliac screw fixation has been proved for a kind of ideal minimally invasive surgery method because of locating exactly,less damage and blood loss,milder pain and quicker recovery.But it demands higher operation techniques.Adequate preoperative preparation and postoperative patients' cooperation can reduce complications incidence.The second group of anterior reconstruction plate or T-shape plate to fix vertically unstable pelvic fractures at same time shows a good result of stabilization.

Feasibility of predicting fracture risk with bone turnover markers and bone mineral density / 中国组织工程研究

BACKGROUND: Although bone mineral density can diagnose osteoporosis, it cannot reflect the existing bone metabolism of the subjects; bone turnover markers cannot diagnose osteoporosis, but it can timely reflect the current bone turnover rate of the subjects. OBJECTIVE: To summarize osteoporotic fracture risk predicted by bone turnover markers and bone mineral density, and to theoretically analyze the feasibility of fracture healing after operation. METHODS: With bone turnover, biochemical marker, osteoporosis in English for the search terms, Pubmed database from January 1999 to January 2009 was retrieved; With bone turnover, bone metabolism, biochemical markers, bone mineral density, osteoporosis, fractures in Chinese for the search terms, CNKI database from January 1999 to January 2009 was searched. Literatures were limited to English and Chinese languages. Inclusive criteria: the article closely related to predict fracture risk with bone turnover markers and bone mineral density; Exclusive criteria: duplicated documents. RESULTS AND CONCLUSION: Totally 631 literatures were screened out by computer, according to inclusion and exclusion criteria, 31 documents of which were involved for analysis. Osteoporosis is one of the main causes of elderly disease and death. Early prediction of osteoporotic fracture risk has a great significance. This article describes the bone metabolism, the type of bone biochemical markers, bone mineral density measurement, multi-cell basic unit and the OPG-RANKL-RANK system in bone reconstruction after a long-term fixation; focuses on the use of bone turnover markers and bone mineral density to prognosticate the fracture risk in osteoporosis or after long-term fixation by domestic and foreign academician, and theoretically analyze the feasibility of predicting postoperative fracture healing.

Identification of mentality facticity based on multi-channel event-related potentials / 生物医学工程学杂志

This paper explores the use of multi-channel event-related potentials (ERP) to identify mentality facticity or detect lie. Some identifiably meaning information, such as subjects' name and birthday, were selected as concealed information to be identified, 15 subjects were tested by concealed information test (CIT) paradigm and their electroencephalographs (EEG) were recorded from 30 electrodes. In virtue of analysis on the statistically significant difference between multi-channel ERPs evoked by probe information and that evoked by irrelevant information, the P300 amplitudes of 15 electrodes were selected as F-test samples. The significant difference of feature sample values between probe and irrelevant information was applied to identify mentality facticity. The results indicate that P300 amplitudes evoked in many electrodes are significantly different between probe and irrelevant information (P < 0.01). According to the significant difference of space sample values between probe and irrelevant information, the detection correctness to probe information reaches to 93.3% and is better than that of methods based single-channel ERP. The method proposed has the advantages of non-invasion and better accuracy, which could be used to identify mentality facticity effectively.

Research progress of fracture healing and its early diagnosis / 中国矫形外科杂志

Many clinical bone nonunion or delayed union often appear in the early stage of bone healing,but they have been always found too lately.Before X-ray films of visual changes indicates salt content inbones reaching 25%,the very early changes ofclinical significance can not be observed.This paper introduces the theory of fracture healing and the definition of bone nonunionand the significance of the basic multicellular unit(BMU)and the OPG-RANKL-RANK system in bone reconstruction.Many technologies such as ultrasonic testing,vibration analysis,mechanical impedance analysis,the bone marrow cavity imaging technologiy,high-resolution CT etc.have been reported in study on the bone,as well as early diagnosis of fracture nonunion.However,the molecular level of early diagnosis is deficiency.

Research progress of fracture healing and it's early diagnosis / 中国矫形外科杂志

Many clinical bone nonunion or delayed union often appear in the early stage of bone healing,but they have been always found too lately.Before X-ray films of visual changes indicates salt content inbones reaching 25%,the very early changes of clinical significance can not be observed.This paper introduces the theory of fracture healing and the definition of bone nonunion and the significance of the basic multicellular unit (BMU) and the OPG-RANKL-RANK system in bone reconstruction.Many technologies such as ultrasonic testing,vibration analysis,mechanical impedance analysis,the bone marrow cavity imaging technologiy,high-resolution CT etc,have been reported in study on the bone,as well as early diagnosis of fracture nonunion.However,the molecular level of early diagnosis is deficiency.

Experimental research on local renal injury of dog with microwave ablation guided by DSA / 介入放射学杂志

Objective To explore the efficiency, complications and probability of preserving part renal function by local renal microwave ablation. Methods The fresh pig renal pelvis full filled with 30% diatrizoate meglumine and the dogs kidney taken arterial pyelography were both ablated with microwave. Dogs were divided into three groups: measuring temperature after ablation group, single point ablation both on the two kidneys group and double points ablation on unilateral kidney group. In measuring temperature after ablation group, DSA and pathology were performed immediately after ablation. In the other groups, DSA with blood and urine samplings were taken for routine tests including renal function right after the ablation and 10 days later. Results Experiment in vitro showed conspicuous renal pelvic contraction and convolution. The group under power rate of 70, 3 min produced urine leak easily. Preliminary test in vivo with DSA showed the disappearance of local kidney blood supply. The residual renal function was related to areas of necrosis. Acute stage pathology revealed acute renal cortex medulla and pelvic cells injury. DSA of chronic stage showed no change in size of the area of ablation. The blood supply of necrotic areas was not restored. The residual kidney possessed the excretion contrast medium with no urine leaks. Upper pole of right kidney adhered with adjacent tissue, together with thickened covering. Pathology revealed fibrous proliferation around the coagulative necrosis. Conclusion Microwave ablation can inactivate the local renal tissue, and, effectively preserve the big blood vessels and function of residual kidney. No urine leaks occurred in chronic stage but easily to produce adhesions with adjacent tissue.