This article was aimed to study the factors associated with sleep quality of anger-out and anger-in population based on the frequent pattern-tree (FP-Tree) growing algorithm with data mining. The algorithm of structuring frequent model FP-tree and mining frequent itemsets were designed. The database information scanned was recorded by using FP-Tree growing algorithm through state-trees. The frequent itemsets met minimum support required was generated through reducing the search space of project sets and scanning database only one. The data mining of all factors associated with emotional diseases was actualized. The results showed that factors associated with sleep quality of anger-out and anger-in population were disturbance in respiration, cough or snoring, feeling cold, hot or nightmares. The total time for program analysis was 2 seconds. It was concluded that data mining algorithm based on FP-Tree frequent itemsets can effectively realize the useful information receiving from factors associated with emotional diseases.

OBJECTIVETo study the proliferation and differentiation of neural stem cells in the subventricular zone (SVZ) in neonatal rats after bilateral common arteries occlusion.

METHODSNinety-six 3-day-old Sparuge-Dawley rats were randomly divided into two groups: ischemia and control. Rats in the ischemia group were subjected to bilateral common arteries occlusion and the rats in the control group were sham-operated. All rats were administrated with 5-bromodeoxyuridine (BrdU) (50 mg/kg) via intraperitoneal injection. Rats were sacrificed and their brains were removed 1, 4, 7, 10, 14 and 35 days after ischemia. Using brain paraffin sections and immunofluorescence assays, the number of newborn cells in the SVZ was counted. Newborn neural stem cells and oligodendrocytes in the SVZ were observed, and then double marked with BrdU and nestin or osmium tetroxide (O4).

RESULTSThe number of BrdU+ cells (neural stem cells) in the SVZ in the ischemia group was greater than in the control group 4, 7, 10 and 14 days after ischemia, and reached a peak at 4 days after ischemia (253.1+/- 49.3 vs 133.5+/- 17.7; P< 0.01). By 35 days after ischemia, the number of BrdU+/O4+ cells (oligodendrocytes) in the corpus callosum (56.0+/- 7.2 vs 17.0+/- 6.4; P< 0.01), the septal nuclei (45.0+/- 11.9 vs 20.5+/- 5.0; P< 0.01), the striatum (34.5+/- 4.2 vs 14.5+/- 5.8; P< 0.01) and the olfactory bulb (46.5+/- 6.6 vs 23.5+/- 8.4; P< 0.01) in the ischemia group increased significantly as compared to the control group (P< 0.01).

CONCLUSIONSBrain ischemia can activate the proliferation of neural stem cells in the SVZ and promote neural stem cells differentiation into oligodendrocytes. The immature brain may have the capacity for self-repair after ischemic brain injury.

Animals ; Animals, Newborn ; Brain Ischemia ; physiopathology ; therapy ; Bromodeoxyuridine ; metabolism ; Cell Differentiation ; Cell Proliferation ; Cerebral Ventricles ; physiopathology ; Female ; Male ; Neurogenesis ; Rats ; Rats, Sprague-Dawley ; Stem Cell Transplantation

BACKGROUND:Most bone marrow mesenchymal stem cel s are infused intravenously and have very low efficiency of homing to the bone marrow. However, cel infusion via the femoral approach is little reported. OBJECTIVE:To explore the distribution of luciferase gene modified red fluorescent protein transgenic bone marrow mesenchymal stem cel s in vivo through different infusion routes. METHODS:Luciferase gene modified bone marrow mesenchymal stem cel s at different gradients (5×106, 1×106, 1×105, 1×104) were seeded or injected into the in vitro pore plate or free femurs to observe the fluorescence imaging and select the best concentration of cel s. Luciferase gene modified bone marrow mesenchymal stem cel s at the best cel concentration were injected into the mice via the femur and the tail vein, respectively. The distribution of fluorescence and cel number in the mice were explored by using bioluminescence, pathological examination, flow cytometry and quantitative PCR. RESULTS AND CONCLUSION:Ex vivo fluorescence intensity of luciferase gene modified bone marrow mesenchymal stem cel s was positively correlated with the cel concentration;fluorescent cel s in vivo appeared in the femur first and then quickly spread to the lungs in the femur group, while fluorescent cel s in the tail vein group spread to the lungs quickly after cel infusion. Fluorescent cel s could be seen in the spleen, liver and other organs 24 hours later in the two groups. The distribution and migration of cel s in mice could be observed successful y by bioluminescence;5 minutes after cel infusion, the lungs of mice in the two groups began to emit fluorescence that could spread to the liver, spleen and other tissues 24 hours later, and the fluorescence intensity reached its peak after 15 minutes. The distribution of bone marrow mesenchymal stem cel s in mice had no significant difference between the femur group and the tail vein group. To conclude, cel injection through the bone marrow cavity and tail vein fails to promote the homing of bone marrow mesenchymal stem cel s to the bone marrow.

AA new total femoral prosthesis with composite structure was designed, and the femoral prostheses under static state were analyzed with ANSYS software (version 5.7). The effects of elastic modulus, Poisson's ratio and the ratio of the inner radius over the outer radius on the stress distribution were investigated. Through a comprehensive analysis of the experimental results of positive stress and shear stress on the prostheses, a new design of the femoral prosthesis was put forth as follows: choose the composite materials of which the outer layer has low elastic modulus and great Poisson's ratio, the inner layer has enough mechanic capability, and the increase in the ratio of the inner radius over the outer radius is as great as possible.
Biocompatible Materials ; Biomechanical Phenomena ; Computer Simulation ; Elastic Modulus ; Femur ; Finite Element Analysis ; Hip Prosthesis ; Humans ; Imaging, Three-Dimensional ; methods ; Prosthesis Design

Objective To investigate the central neurotoxicity induced by nucleoside analog reverse transcriptase inhibitors (NRTIs)-stavudine (D4T).Methods Mouse primary cortical neurons were cultured and treated with different concentrations of stavudine.Neuron apoptosis was analyzed by calcein/acetomethoxy/propidium iodide (AM/PI) staining. Morphological change of neuron was confirmed by immunofluorescence.Mitochondrial DNA copies which were usually evaluated through Cycloxygenase 2 (COX-2) and thymidine kinase2 (TK2) mRNA were determined by real-time quantitative polymerase chain reaction.Chi-square test,student t test and Wilcoxon nonparameter test were used to analyze the data.Results Neuronal apoptosis observed in 50 μmol/L D4T treatment group was more significant than that in 0μmol/L D4T treatment group and 25 μmol/L D4T treatment group (51.3％±12.4％ vs 24.9％±8.2％ and 26.5％±10.6％,respectively; x2 =7.25 and 6.93,respectively; both P＜0.01).The average neurite numbers of each neuron were 11.2±3.6 in 0μmol/L D4T treatment group,8.6±2.8 in 25 μmol/L D4T treatment group and 4.3±2.4 in 50 μmol/L D4T treatment group.The difference was statistically significant between 25 μmol/L D4T treatment group and 0 μmol/L D4T treatment group (t=4.06,P＜0.01) and between 50 μmol/L D4T treatment group and 25 μmol/L D4T treatment group (t =4.35,P＜ 0.01). Furthermore,the average lengths of neuritis were (319.9±100.2) μm in 0 μmol/L D4T treatment group,(298.3±83.9) μm in 25 μmol/L D4T treatment group and (258.4±82.2) μm in 50 μmol/L D4T treatment group.The difference was statistically significant between 25 μmol/L D4T treatment group and 0 μmol/L D4T treatment group (t=4.58,P＜0.01) and between 50 μmol/L D4T treatment group and 25 μmol/L D4T treatment group (t=4.65,P＜0.01).TK2 mRNA expression dramatically decreased along with the increasing D4T concentration.The fold changes were 0.34 in 25 μmol/L D4T treatment group and 0.08 in 50 μmol/L D4T treatment group. The difference was statistically significant between 25 μmol/L D4T treatment group and 0μmol/L D4T treatment group (Z=- 3.28,P＜0.01) and between 50 μmol/L D4T treatment group and 25 μmol/L D4T treatment group (Z=-4.25,P＜0.01).Compared with 0μmol/L D4T treatment group,the relative fold changes of COX-2 copies were 1.01 in 25 μmol/L D4T treatment group and 1.12 in 50 μmol/L D4T treatment group.The differences were not significant among the three groups (Z=0.98 and 1.24,respectively; both P＞0.05).Conclsion It suggests that short-term exposure to D4T may result in neuron apoptosis,neurite shrink and down-regulated expression of TK2,but the level of mitochondrial DNA copies keeps stable.

OBJECTIVETo study the protective effects of polysaccharides from Dendrobium huoshanense (DHP) against CCl4-induced liver injury in mice.

METHODEighty male Kunming mice were randomly divided into normal control group, model control group, dextran control group, starch control group, hydrolyzate control group, three different dose of DPH groups consisting of high-dosage group, middle-dosage group and low-dosage group (200, 100, 50 mg x kg(-1)). Each group contained ten mice. The mice were treated with DHP via intragastric administration for 15 days before treatment of 50% CCl4 in olive oil for consecutive two days. Both alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities in serum and superoxide dismutase (SOD) activities and malondialdehyde (MDA) contents in liver tissues were determined in all groups. Immunohistochemistry was used to detect the expression of TNF-alpha in hepatic tissue. Hepatic histopathological examination was observed.

RESULTDHP effectively decreased the activities of ALT and AST in serum and the contents of hepatic MDA, and restored hepatic SOD activities in acute liver injury mice. Liver tissue damage induced by CCl4 was ameliorated in mice with DHP administration through histopathology examination. Furthermore, the expression of TNF-alpha was greatly decreased in groups treated with polysaccharides.

CONCLUSIONDHP has a significantly hepatoprotective effect on CCl4-induced acute liver injury in mice. Protective effect of DHP on the liver may be related to its function of scavenging free radicals and inhibiting lipid peroxidation and TNF-alpha expression.

Alanine Transaminase ; blood ; Animals ; Aspartate Aminotransferases ; blood ; Carbon Tetrachloride ; toxicity ; Chemical and Drug Induced Liver Injury ; blood ; enzymology ; pathology ; prevention & control ; Dendrobium ; chemistry ; Gene Expression Regulation ; drug effects ; Liver ; drug effects ; metabolism ; pathology ; Male ; Malondialdehyde ; metabolism ; Mice ; Polysaccharides ; chemistry ; pharmacology ; Superoxide Dismutase ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Objective: To establish a mouse model of acute lung injury (ALI) via intratracheal aerosolization of paraquat (PQ). Methods: Thirty male C57BL/6J mice of 8-10 weeks old were randomly(random number) divided into the paraquat model group (n = 15) and the saline control group (n = 15). Mice in the paraquat model group were administered PQ solution (0.4 mg/mL) at a single dose of 50 μL per mouse via intratracheal aerosolization. Mice in the saline control group received an equal volume of saline. Mice were sacrificed 72 h post-PQ administration and samples were collected. The general physical condition of mice including body weight as well as mortality was monitored daily. Pulmonary function, cell counting and classification of bronchoalveolar lavage fluid (BALF), proinflammatory cytokines (TNF-α, IL-1β, and IL-6) levels of BALF and serum, MPO activity and total protein concentration of BALF and pathological lung injury scores were obtained. Results: The body mass of mice decreased progressively within 72 h after PQ intratracheal administration. The static compliance of lung decreased (P<0.01) and the resistance increased (P<0.01). The number of inflammatory cells in BALF was significantly higher than that of the saline control group (all P<0.01), the levels of proinflammatory cytokines were significantly upregulated in both BALF and serum (all P<0.01), and the activity of MPO in BALF was also remarkedly increased (P<0.01). The total protein concentration of BALF was significantly elevated (P<0.01). The pathological observation of lung tissue showed a large number of inflammatory cells infiltration accompanying pulmonary hemorrhage, alveolar collapse, hyaline membrane formation and alveolar septal thickening, and the lung injury scores significantly increased (P<0.01). Conclusions Intratracheal aerosolization of a single dose of 0.02 mg PQ can successfully induce ALI in mice.

Objective:To explore the effect of family function combined with positive suggestion on self-assessment and quality of life of patients with ischemic stroke.Methods:Totally 120 patients with ischemic stroke admitted to hospital from May 2018 to May 2019 were selected by experimental research method, and they were divided into control group and observation group according to the random alphabet, with 60 cases in each, the control group was given positive suggestion, while the observation group was given family function combined positive suggestion, the Activities of Daily Life (ADL), General Self-Efficacy Scale (GSES), Self-rating Depression Scale (SDS), Self-rating Anxiety Scale (SAS), the MOS item short form Health Survey (SF-36) were compared before and after nursing and nursing satisfaction.Results:Before nursing, the ADL scores of the observation group and the control group were (34.61±4.36), (35.58±4.82) points, GSES scores were (17.94±2.48), (17.38±2.62) points, SAS scores were (61.82±6.57), (61.37±6.64) points, SDS scores were (63.71±6.65), (63.28±6.94) points respectively, and there was no significant difference between the two groups ( P> 0.05); after nursing, the ADL score of the observation group was (69.85±7.84) points, higher than (58.39±6.72) points of the control group, the GSES score was (24.25±2.69) points, higher than (20.48±2.31) points of the control group, the SAS score was (47.64±4.91) points, lower than (54.52±5.83) points of the control group, and the SDS score was (50.29±5.26) points,lower than (54.15±5.91) points of the control group ( t values were from 3.779 to 8.597, P< 0.05). There was no significant difference in SF-36 score between the two groups before nursing ( P> 0.05), and the improvement of the observation group was significantly better than that of the control group after nursing ( t values were 2.037-3.656, P< 0.05). The nursing satisfaction of the observation group was 90.00% (54/60), higher than 75.00% (45/60) of the control group ( χ2 value was 4.675, P< 0.05). Conclusion:Family function combined with positive suggestion can significantly improve the life ability and self-efficacy of patients with ischemic stroke, relieve anxiety and depression, significantly improve the quality of life, and obtain satisfactory nursing effect.

Objective:To establish and apply the intervention model of professional attitude for nursing undergraduates in universities of Traditional Chinese Medicine (TCM), and to explore its effect on the professional attitude of the nursing undergraduates.Methods:The study started in August 2018 included two steps. The first step was to develop intervention model of professional attitude for nursing undergraduates in universities of TCM based on the three-stage theory of Kelman ′s attitude formation and with Delphi method. After two rounds of expert consultation, the intervention model of professional attitude for nursing undergraduates in universities of TCM was finally formed, including three intervention stages, a total of 41 intervention measurements. The second step was to use the historical control research method. Grade 2016 nursing undergraduate (the year 2016—2020) in Beijing University of Chinese Medicine was taken as the experimental group ( n=86) and adopted the intervention model. Grade 2012 nursing undergraduate (the year 2012—2016) in the same university was taken as the control group ( n=56) and did not adopted the intervention model during their university study. The two groups were continuously evaluated by "Scale for Nurse ′s Professional Attitude" during their four years in the university. The measurement time was within one week of admission and the 16th week of the second semester of each academic year, with a total of 5 times of measurement. Results:Repeated measurement design showed that the scores of Scale for Nurse′s Professional Attitude of the two groups changed with time. At the end of the first year, the score of the scale in the experimental group was (6.06±0.95) points, higher than (5.41±1.08) points of the control group ( t value was 3.765, P<0.001). There was no difference between the two groups at other time points ( P>0.05). Conclusions:The intervention model of professional attitude for nursing undergraduates in universities of TCM has good operability and can improve the professional attitude of nursing undergraduates in universities of TCM during their freshman year. The intervention model needs to be further adjusted to improve the professional attitude in the subsequent learning stage.

Objective To study the effect of autophagy regulation on hypoxia/reoxygenation injury(H/RI)in mouse spermatogonia,and to explore the effect of autophagy on ischemia-reperfusion injury(IRI)in mouse testicular tissue.Methods The mouse spermatogonial cell line GC1 spg was used as the research object to construct the H/RI model.Rapamycin(RAPA)and 3-methyladenine(3-MA)were used as autophagy ago-nists and inhibitors.The control group,the model group,the autophagy agonist intervention group(H/RI+autophagy agonist intervention),and the autophagy inhibitor intervention group(H/RI+autophagy inhibitor intervention)were set up.The cells proliferation ability of each group was detected by methyl thiazol tetrazoli-um(MTT)method.The release level of reactive oxygen species(ROS)and apoptosis level of each group were detected by flow cytometry.The expression levels of autophagy-related gene Beclin1 and apoptosis-relat-ed genes Bcl-2 and Bax mRNA in each group were detected by real-time fluorescence quantitative PCR(qPCR).The expression levels of autophagy-related proteins LC3-Ⅰ,LC3-Ⅱ,Beclin1,p62 and apoptosis-relat-ed proteins Bcl-2,Bax,caspase-3 in each group were detected by Western blot.Results Compared with the control group,the proliferation abiliy,the expression levels of Beclin1 and Bcl-2 mRNA in the model group were significantly decreased(P＜0.01),the relative expression levels of p62 and Bcl-2 proteins were significantly decreased(P＜0.01).The ROS level,apoptosis rate and the mRNA expression level of Bax were significantly increased(P＜0.01),and the protein expresion levels of Beclin1,Bax,caspase-3 and the protein ratio of LC3-Ⅱ/LC3-Ⅰ were significantly increased(P＜0.01).Compared with the model group,the cell proliferation a-bility,the expression levels of Beclin1 and Bcl-2 mRNA in the autophagy agonist intervention group were the protein ratio of significantly increased(P＜0.01),the protein expression levels of Beclin1 and Bcl-2 and the protein ration of LC3-Ⅱ/LC3-Ⅰ were significantly increased(P＜0.01).The ROS level,apoptosis rate and the expression level of Bax mRNA were significantly decreased(P＜0.01),and the protein expression levels of p62,Bax,caspase-3 and the protein ratio of LC3-Ⅱ/LC3-Ⅰ were significantly decreased(P＜0.01).Com-pared with the model group,the cell proliferation ability,the mRNA expression levels of Beclin1 and Bcl-2 in the autophagy inhibitor intervention group were significantly decreased(P＜0.01),the protein expression lev-els of Beclin1 and Bcl-2 protein were significantly decreased(P＜0.01).The ROS level,apoptosis rate and the mRNA expression level of Bax were significantly increased(P＜0.01),and the protein expression levels of p62,Bax,caspase-3 and the protein ratio of LC3-Ⅱ/LC3-Ⅰwere significantly iecreased(P＜0.01).Conclusion Enhanced au-tophagy can inhibit apoptosis of spermatogonia and repair H/RI in mice,which provides a theoretical basis for the treatment of testicular tissue IRI.