Objective To design a space crawl training device.This device could achieve oval movement by rotating the wheel to drive the handle of the upper limb.At the same time,the leg support is driven to rotate about 30 degrees to 0 de-grees,which can assist the user to complete the entire crawling. Methods The structure of the device was modeled using SolidWorks.Then the whole device was simulated by using SolidWorks Motion,and the dynamic analysis was completed by calculation.Finally,the main force components from SolidWorks were imported into ANSYS Workbench for static analysis. Results and Conclusion The designed space trajectory crawling training device can assist the user to complete the scheduled crawling movement,and the strength checking of the key components meets the strength requirements.

italic>Schisandra chinensis is a traditional Chinese medicine with the functions of reinforcing deficiency, strengthening, and inducing astringency, appliable to treat the chronic cough and deficiency in breath, palpitation, and insomnia, etc. A hybrid mass spectrometry scanning strategy (high-definition data-independent/data-dependent acquisition, HDDIDDA), enabling the ion mobility separation and alternating data-independent acquisition/data-dependent acquisition, was established, which, in combination with in-house library-driven automatic peak annotation workflows facilitated by the UNIFI software, was utilized to systematically characterize the multi-classes of chemical components from S. chinensis. The use of an HSS T3 column (100 mm × 2.1 mm, 1.8 μm), 0.1% formic acid in H₂O-acetonitrile as the mobile phase running at the flow rate of 0.3 mL·min^-1, and column temperature at 35 ℃, could enable good separation of the S. chinensis components within 42 min. HDDIDDA scan in both the positive and negative ion modes was employed for data acquisition. Based on the automatic peak annotation, reference standards comparison, MS² data interpretation, and literature analysis, we were able to identify or tentatively characterize 105 compounds in the S. chinensis decoction, involving 56 terpenoids, 42 lignans, five glycosides, one organic acid, and one flavonoid. HDDIDDA scanning can improve the coverage of data acquisition and improve the accuracy of identification, while CCS prediction analysis provides the possibility to distinguish isomers by the ion mobility technology. The results provide reference for the intelligent material basis research of TCM.

OBJECTIVEA randomized trial of breast self-examination (BSE) Program was carried out to evaluate whether the intensive BSE could reduce the number of deaths among women from breast cancer.

METHODSThis study was a randomized controlled trial (RCT). A total of 266 064 women (age of 30 to 64 years) associated with 519 textile factories in Shanghai had been randomly assigned to a BSE group (132 979 women) or a control group (133 085 women) since 1989. Initial instruction in BSE group would include demonstration of proper palpation techniques and was followed by 2 reinforcement sessions during the subsequent 4 years including video shows, BSE instruction sessions and BSE practice under medical supervision. These activities were continued for 5 years. Attendance at all events was recorded. The cohort was followed through July 2000 for development of breast diseases, and the breast cancer cases were followed through 2001 for vital status. Data analysis methods used would include Kaplan-Meier plots, log-rank test and Cox modeling.

RESULTSAmong women under instruction, 864 breast cancers detected and 133 breast cancer deaths occurred while 896 breast cancers were detected and 130 deaths recorded in the control group. The tumor size (P = 0.07), TNM stage (P = 0.39) and cumulative breast cancer mortality rate (P = 0.72) were not significantly different between the 2 groups. However, more and smaller fibroadenomas were detected in the instruction group than in the control group (P< 0.01).

CONCLUSIONIntensive instruction in BSE did not seem to have reduced the mortality rate of breast cancer, but more and smaller benign breast lumps could be detected.

Adult ; Breast Diseases ; diagnosis ; Breast Neoplasms ; diagnosis ; mortality ; Breast Self-Examination ; China ; Female ; Humans ; Middle Aged ; Patient Education as Topic

OBJECTIVETo investigate the effect of gene GCRG213 siRNA transfection into gastric cancer cell line MKN45 cells.

METHODSTwo pairs of DNA sequences containing small hairpin structure to GCRG213 were designed and synthesized. The complement form was obtained by annealing and inserted into RNAi expression vector IMG-800. They are IMG-800-1 and IMG-800-2 correspondingly. The recombinant plasmid IMG-800-1, IMG-800-2 and the vector IMG-800 were separately transfected into MKN45 cells conducted by lipofectamine 2000. After G418 selecting, the cells were transfected steadily. Expression of GCRG213 was detected by semi-quantitative RT-PCR and Western Blot. The growth graph of six steady transfected cell cultures was protracted by cell counting. FACS was used to detect the cell cycle, and Annexin V FITC/PI double labeling were used to detect the effects on cell apoptosis in the above-mentioned cells. The clone formation rate in plate and in nude mice was tested to investigate the tumorigenic characteristics of the six steadily transfected cells in vitro and vivo.

RESULTSThrough sequencing, two pairs of DNA sequences containing small hairpin structure to GCRG213 were proved to be successfully cloned into siRNA expression vector IMG-800, correspondingly called IMG-800-1 and IMG-800-2. The recombinant plasmid IMG-800-1, IMG-800-2 and vector IMG-800 were transfected separately into MKN45 cells conducted by lipofectamine 2000. After G418 selecting, the cells were transfected steadily. Transfecting the siRNA vector (IMG-800-1, IMG-800-2 ) into the MKN45 cells significantly decreased the expression of GCRG213, at both mRNA and protein levels. The growth graph showed that the growth of IMG-800-1 and IMG-800-2 transfected cells were slower than that of vector transfected cells. The proportion of cells in G2/M and/or S phase decreased in the cells transfected with IMG-800-1 and IMG-800-2 and cell apoptosis increased. The average clone formation rate in vitro decreased in the cells transfected with IMG-800-1 and IMG-800-2, compared with those transfected with vector. In vivo, the time of tumor formation of IMG-800-1 and IMG - 800-2 transducted cells in nude mice was prolonged and the tumor size was smaller.

CONCLUSIONGCRG213 SiRNA transfection may induce inhibition of growth and proliferation of tumor cells, promote cell apoptosis, and inhibit the tumorigenicity in vitro and vivo.

Adenocarcinoma ; genetics ; metabolism ; pathology ; Animals ; Apoptosis ; Blotting, Western ; Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Female ; Genetic Vectors ; Humans ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Peptide Hormones ; biosynthesis ; genetics ; RNA Interference ; RNA, Messenger ; biosynthesis ; genetics ; RNA, Small Interfering ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Stomach Neoplasms ; genetics ; metabolism ; pathology ; Transfection ; Transplantation, Heterologous

OBJECTIVE: To explore the application value of serum total IgE, tryptase and chymase in the identification of death caused by drug anaphylactic shock. METHODS: The general information from 235 cases of non-drug anaphylactic shock and 32 cases of drug anaphylactic shock were analyzed. The serum IgE level had been detected in the cases. Ten cases caused by coronary disease and 10 cases caused by sudden manhood death syndrome were selected from non-drug anaphylactic shock cases for the control group. Expressions of tryptase and chymase in the lung and heart were detected using immunohistochemistry method. The number and IOD of positive mast cells were counted. RESULTS: In the drug anaphylactic shock group, the IgE value of 18 samples (56.25%) was significantly higher than the normal upper limit of 120 IU/mL. In the non-drug anaphylactic shock group, the IgE value of 67 samples (28.51%) was higher than 120 IU/mL. The expressions of tryptase and chymase were significantly increased in lung and myocardial tissue in drug anaphylactic shock group (P < 0.05). CONCLUSION Tryptase and chymase are more superior than that of the serum total IgE in the diagnosis of death caused by drug anaphylactic shock, and are more suitable in forensic practice.
Adolescent ; Adult ; Aged ; Anaphylaxis/pathology* ; Autopsy ; Case-Control Studies ; Cause of Death ; Child ; Child, Preschool ; Chymases/metabolism* ; Death, Sudden, Cardiac/pathology* ; Drug Hypersensitivity ; Female ; Forensic Pathology ; Humans ; Immunoglobulin E/blood* ; Immunohistochemistry ; Infant ; Lung/pathology* ; Male ; Middle Aged ; Myocardium/pathology* ; Tryptases/metabolism* ; Young Adult

OBJECTIVE: To observe the expression and distribution of vascular cell adhesion molecule-1 (VCAM-1) and caspase-3 in myocardium of persons who died from viral myocarditis and to explore its pathogenesis and death mechanism. METHODS: Twenty cases died from viral myocarditis were selected as the experimental group. Ten cases died from traumatic shock and massive hemorrhage shock after traffic accidents were selected as the control group. The sections of myocardium were stained by immunohistochemistry for VCAM-1 and caspase-3, and observed under microscope. The positive expressions of VCAM-1 and caspase-3 of the two groups were compared with each other by image analysis and statistical analysis. RESULTS: (1) The vascular endothelial cells expressed VCAM-1 with dark-brown colors in the experimental group, and weak expression was observed in the control group. The average optical density in the experimental group was higher than that in the control group (P < 0.05). (2) The caspase-3 positive cells were mostly inflammatory cells around the myocardial vessels with brown-red granules in the experimental group. The positive cell number in the experimental group was higher than that in the control group (P < 0.05). CONCLUSION VCAM-1 may play an important role in the inflammatory cells exudation caused by viral myocarditis, and may provide the reference for diagnosis of viral myocarditis in forensic pathology. However, the myocardial apoptosis mediated by caspase-3 doesn't affect the lethal mechanism in the late stage of viral myocarditis.
Adolescent ; Adult ; Caspase 3/metabolism* ; Child ; Death, Sudden, Cardiac/etiology* ; Female ; Forensic Pathology ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Myocarditis/virology* ; Myocardium/pathology* ; Myocytes, Cardiac/pathology* ; Shock, Traumatic/pathology* ; Vascular Cell Adhesion Molecule-1/metabolism* ; Young Adult

Objective To compare the differences on onset timing of acute ST segment elevation myocardial infarction (STEMI) in young and aged patients. Methods The exact onset time of symptoms was obtained from 1024 consecutive patients with STEMI admitted to our hospital between January 2000 and May 2010. Patients were classified as the middle-aged group [＜65 years old, mean (52.2 ±8.0)years, n =536]and old group [≥65 years old, (72. 2 ±5.5)years, n =488], the difference of the onset months,weeks, weekdays and hours between two groups was compared. Results The high onset timing of STEMI in middle-aged group was October and February, Friday, Saturday and Wednesday, at 10 A.m. And 10P. M. The high onset timing of STEMI in old group was October, January and March, Friday, Sunday and Monday, at 6 A.m. And 2 A. M. The incidences of STEMI in the old group were significant higher than in the middle-aged group in March ( 11.89％ ), on Sunday ( 15.97％ ) and Monday ( 17.42％ ), at 6 A.m.(6.35％)and 2 A. M. (5.74％) (all P ＜0.05) while the onset rate was significant higher in February (9. 89％ ), On Saturday16. 98％ ), At 8 P. M. (4. 86％ )and 10 P. M. (5.78％)in the middle-aged group than old group ( all P ＜ 0. 05 ). Conclusion The onset timing of STEMI in old patients was significant different from the middle-aged patients suggesting the onset timing of STEMI changes with aging.

OBJECTIVE: To explore the mechanism that how human enterovirus 71 (EV71) invades the brainstem and how intercellular adhesion molecules-1 (ICAM-1) participates by analyzing the expression and distribution of human EV71, and ICAM-1 in brainstem of infants with brain stem encephalitis. METHODS: Twenty-two brainstem of infants with brain stem encephalitis were collected as the experimental group and 10 brainstems of fatal congenital heart disease were selected as the control group. The sections with perivascular cuffings were selected to observe EV71-VP1 expression by immunohistochemistry method and ICAM-1 expression was detected for the sections with EV71-VP1 positive expression. The staining image analysis and statistics analysis were performed. The experiment and control groups were compared. RESULTS: (1) EV71-VP1 positive cells in the experimental group were mainly astrocytes in brainstem with [dark]-brown particles, and the control group was negative. (2) ICAM-1 positive cells showed [dark]-brown. The expression in inflammatory cells (around blood vessels of brain stem and in glial nodules) and gliocytes increased. The results showed statistical difference comparing with control group (P < 0.05). CONCLUSION The brainstem encephalitis can be used to diagnose fatal EV71 infection in infants. EV71 can invade the brainstem via hematogenous route. ICAM-1 may play an important role in the pathogenic process.
Astrocytes/pathology* ; Brain Stem/virology* ; Case-Control Studies ; Encephalitis, Viral/virology* ; Enterovirus A, Human/metabolism* ; Female ; Hand, Foot and Mouth Disease/virology* ; Humans ; Immunohistochemistry ; Infant ; Intercellular Adhesion Molecule-1/metabolism* ; Male

Objective To investigate the clinical features and differential diagnosis of lepromatous type brain abscess. Methods A total of 18 cases with brain abscess admitted to Department of Neurosurgery, Cancer Center, Sun Yat-sen University during October 2000 to February 2007 were retrospectively analyzed with regard to their clinical data and prognosis during follow-up.Results 11 cases had been diagnosed with gliomas and 7 cases had been diagnosed with metastatic tumors in other hospitals. Among the 18 cases, 16 patients took the onset in winter and spring. All of the 18 cases had not found the primary focus of infection. Two cases among them had got a fever 1 month prior to hospitalization. Among the 18 cases, 7 cases had higher total white blood cells (10.1×109/L-13.7×109/L), and 6 cases had higher neutrophil rate (80.8%-90.5%). And the other 11 cases had normal blood routine. After hospitalization, all of the patients received MRI. 14 cases of them were diagnosed with brain abscess, 2 cases with metastatic tumor, 1 case with glioma, and 1 case with parasite. All of the patients got bacterial culture, and showed asepsis in 9 cases, Gram-positive bacteria in 4 cases, streptococci in 3 cases,Staphylococcus epidermidis in 1 case, and Klebsiella pneumoniae in 1 case. Twelve cases underwent resection, and 6 cases received puncture and drainage. During the follow-up ranging 1-6 years, 17 cases healed well, and 1 case get better. Conclusion Lepromatous type brain abscess commonly occurs in winter and spring. The clinical manifestations are untypical. MRI is the most valuable auxiliary examination, and the magnetic resonance spectroscopy and diffusion weighted imaging takes an important role in differential diagnosis between brain abscess and cystic brain tumor with necroses.

OBJECTIVE: To investigate the pathological features of blood stasis syndrome (BSS) in non-diabetic peripheral neuropathy. METHODS: Clinical data of 31 patients with non-diabetic peripheral neuropathy who had undergone nerve biopsy during December 2004 and December 2010 in Xuanwu Hospital Capital Medical University were retrospectively analyzed. According to Chinese medicine (CM) syndrome differentiation and signs, 26 patients were blood stasis type and 5 patients were non-blood stasis type. Clinical and pathological data were compared in detail. RESULTS: Clinically, although both groups shared similar symptoms of limb numbness, weakness and sensory disturbances, the prevalence of neuralgia was much grievous in BSS group (73.1%, 26/31) compared with the non-BSS group (0%, 0/5). As for signs, dermal nutrients disturbance (84.6%, 22/26), dark or purple tongue (100.0%, 26/26), and sublingual varices (80.7%, 21/26) were more common in the BSS group than the non-BSS group (0%, 60%, 20%, respectively). The prevalence of qi deficiency cases (19/26) in the BSS group was significantly higher compared with the non-BSS group (1/5). The unique histological manifestations of BSS were axonal degeneration (16/26 vs 2/5 in non-BSS group), which was the hallmark of ischemia. Cases with BSS had prominent microangiopathy (61.5%, 16/26), manifested as epineurium vasculitis (inflammatory cell infiltrated to the vessel wall, obliteration and recanalization, vascular proliferation, extravascular hemosiderin deposition), angiotelectasis, proliferation and hyaline degeneration of endoneurium capillary. In the BSS group, impaired blood-nerve barrier was indicated by sub-perineurial edema (46.2%, 11/26) and endoneurial edema (15.4%, 4/26). The Renaut body (15.4%, 4/26) and amyloid deposition (3.8%, 1/26) found in the BSS group were absent in the non-BSS group. CONCLUSIONS BBS was common in non-diabetic peripheral neuropathies. The nerves exhibited ischemic alteration of primary axon degeneration and secondary demyelination. The interstitial tissue revealed microcirculation impairment, blood-nerve barrier disturbance, amyloid deposition and proliferation changes. The high prevalence of qi deficiency also highlights the therapy of promotion of blood circulation and removal of blood stasis.