OBJECTIVE To study the clinical characteristics of invasive pulmonary aspergillosis(IPA).METHODS Based on the clinical data from 14 IPA cases identified by pathologic examination in the 454th Hospital,the characteristics of IPA were discussed,including the underlying diseases,symptoms,X-ray,CT,the treatment methods and the curative effect.The related literatures were also reviewed.RESULTS All of the 14 patients had underlying diseases.From them 5 were with pulmonary cancer(35.7%),3 with chronic obstructive pulmonary disease(21.4%),2 with pulmonary abscess(14.3%),2 were after chemotherapy for leukemia(14.3%),1 with pulmonary tuberculosis(7.1%)and 1 with diabetes(7.1%).The common symptoms of the 14 cases were febricity,productive cough and hemoptysis.Some of them also suffered with short of breath,night sweat,fatigue,chest pain and losing weight.The air crescent sign showed on X-ray and CT.Soft tissue masses with halo-sign on the margin,dense shadow of small masses within the alveoli,and multi-nodular shadows were also observed.Among 10 patients treated by antifungal medications,only 4 treated otherwise with operation were cured,4 patients died,and 2 patients did not complete the treatment scheme.CONCLUSIONS The patients with immunodeficiency are susceptible to IPA.The clinical manifestations of IPA are non-specific.The final diagnosis depends on the pathologic examination.The only medication is not sufficient for IPA patients.Pulmonary resection should be considered if the prolonged illness or frequent hemoptysis exist.

This paper briefly reviews the latest progress in the analyses of the technologies for artificial hip joints; and in the researches directed to the features of UHMWPE debris obtained from all kinds of experimental conditions, to the wear process and wear mechanism, and to the factors which influence the wear mechanism. Furthermore, the signification of debris atlas was illustrated. Finally, future directions to be furthered were considered and envisaged. It is suggested that emphases be laid on the relationship between the UHMWPE debris feature and the wear mechanism, and be laid synergistic effects of biochemical environment and loading environment so as to establish the predictive wear models of artificial hip joints.
Arthroplasty, Replacement, Hip ; adverse effects ; Equipment Failure Analysis ; methods ; Foreign Bodies ; etiology ; prevention & control ; Humans ; Particle Size ; Polyethylenes ; adverse effects ; analysis ; Prosthesis Failure

Objective To investigate the clinical efficacy of Dahuang Xiaozhi Suppository combined with tetracycline in treating type Ⅲ prostatitis infected with nano-bacteria. Methods Totally 120 patients of type Ⅲprostatitis infected with nano-bacteria were randomly divided into treatment group and control group, with 60 cases in each group. Both groups were disabled anti-infective drugs and other preparations for diet and life intervention. Both groups received tetracycline, once a tablet, twice a day, orally. The treatment group received Dahuang Xiaozhi Suppository, once a capsule, once a day, placing in the anus 3-4 cm. 10 d was a treatment course, for 3 courses. The clinical efficacy, major symptoms improving time, NIH-CPSI, leukocyte count and ecithin corpuscles in expressed prostatic secretion (EPS), urinary flow rate, and cytokine content of TNF-α, IL-6, IL-8, were evaluated. Results The total effective rate was 100.0% (60/60) in treatment group and 83.3% (50/60) in the control group, and treatment group was higher than the control group (P<0.05). Pelvic pain, urinary symptom, and scrotum wet improvement time of treatment group were lower than the control group (P<0.05). Compared with before the treatment, the NIH-CPSI pain scores, urinary symptom scores, life quality score, leukocyte count and TNF-α, IL-6, IL-8 content of EPS in both groups were significantly lower after treatment (P<0.05), and the cases with lecithin corpuscles +++ - ++++ in both groups significantly increased after treatment (P<0.05). The urinary peak flow rate and mean flow rate in both groups were higher after treatment (P<0.05). There was statistical significance in the scores of NIH-CPSI pain, urinary symptom and life quality, leukocyte count and TNF-α, IL-6, IL-8 content of EPS, and the cases with lecithin corpuscles ++++ between the two groups (P<0.05). Conclusion Dahuang Xiaozhi Suppository can improve the efficacy of treating type Ⅲ prostatitis infected with nano-bacteria. Combining Dahuang Xiaozhi Suppository with tetracycline can reduce prostate inflammation, with obvious efficacy.

BACKGROUND: CT scan and differential modeling are used to analyze the fracture end, which is an effective method to judge the degree of bone healing. To obtain the high precision of differential modeling and simulation, how to select the optimal CT scanning parameters needs further research and analysis. OBJECTIVE: To compare the effects of different CT scanning parameters on modeling accuracy in personalized differential modeling analysis, to verify the accuracy and effectiveness of personalized differential modeling in the reduction of simulated target bone segments, and to explore the research value of this method in judging the degree of bone healing of long canals of lower extremities. METHODS: The model of internal fixation was established with porcine femur. Four groups of 80 kV-300 mA (group A-low dose), 120 kV-335 mA (group B-automatic tube current control system), 140 kV-300 mA (group C-manual setting comparison) and 140 kV-80 mA (group D-high kV and low mA) were used to scan the same object with the same pitch, slice thickness and environment. The scanning data of each group were selected, the same CT value range was used, and the differential modeling analysis method was used to model the target bone segment. The average area and maximum area of metal artifacts in CT scanning images, the average CT value, volume and maximum wall thickness peak after differential modeling analysis, the radiation amount under four groups of scanning conditions were compared to determine the reduction of metal artifacts, modeling accuracy and radiation, so as to select the optimal CT scanning parameters. RESULTS AND CONCLUSION: (1) Artifact measurement method results: In group A, there were many metal artifacts, which obviously obstructed bone tissue, and had a possibility of missed diagnosis. In group D, there were minimal metal artifacts, less occlusion around bone tissue, but poor image contrast and high fog. The difference between group B and group C lay in the clarity of images, and the accuracy of diagnosis was basically the same. Therefore, the order of artifact size was as follows: group A > group B > group C > Group D. (2) Differential modeling analysis results: In group B, because of the smaller artifact and less loss of CT value, the simulated model was more close to the reality. Moreover, group B adopted the automatic tube current control system, which could obviously show that the radiation amount was smaller and more protective for patients. (3) It is confirmed that the CT scan under the condition of group B can effectively reduce the interference caused by metal artifacts, better retain the original information of CT gray value, and retain the density information of the target bone segment to the maximum extent. Therefore, when establishing differential modeling, the CT automatic tube current control system is used as the optimal CT scanning parameter, which not only improves the simulation accuracy of personalized differential modeling, but also increases the accuracy of calculation.

Adenoma ; pathology ; Colonic Neoplasms ; pathology ; Humans ; Intestinal Mucosa ; pathology

Aim To construct the fusion gene of human IgG3 upper hinge region and p53 tetramerization domain and to analyze its space conformation. Methods The fusion gene was obtained by recursive polymerase chain reaction (R-PCR),and was cloned into vector pUC19. The positive clone was selected and sequenced with PE310 auto-sequencer. The space conformation of the fusion gene expression product was predicted by using computer program Antheprot. Results Restriction endonuclease digestion confirmed that the fusion gene has been inserted correctly into the vector. The result of sequencing showed that the fusion gene is identical with designation. Analyzing with antheprot program showed that the fusion gene expression product could auto-assembly into a tetramer with four long and flexible linkers. Conclusion Successful construction of the fusion gene mentioned above laid the foundation for further preparation of multivalent gene engineering antibody.

VP1 gene encoded by the newly identified caprine enterovirus CEV-JL 14 was amplified and cloned to prokaryotic expression vector pGEX-4T-1.Recombinant GST-VP1 fusion protein was expressed,purified,emulsified with Freund's complete adjuvant and used to immunize the BALB/c mice following a standard procedure.The spleen cells from immunized mice were collected and fused with myeloma cells after its antibody titer reached over 104 times detected by indirect ELISA.Hybridoma cell clones secreting monoclonal antibodies against VP1 were screened and their stability and specificity were further determined.The identified hybridoma cells were injected to mice intraperitoneally and ascites were collected at 7 DPI.Isotypes of the monoclonal antibodies against the recombinant VP1 protein were characterized to be either IgG1 or IgG2b,which showed a high specificity for detection of caprine enterovirus antigens by immunoperoxidase monolayer assay,thus laying a solid basis for future study related to viral pathogenesis,detection and diagnostics for caprine enterovirus infection.

Objective: To determine health risk behaviors related to accidental injury of adolescent in Jiangxi province,and to provide a peference for taking targeted measures to prevent the occurence of adolescent’s risk behaviors. Methods: By using the cluster stratified sampling, students of grade one and grade two from 10 classes in 5 middle schools in Nanchang city and from 1 middle school in Wuyuan county were selected. Health risk behaviors were investigated through questionnaire survey and were compared within the two areas. Results: Regarding to safety, the rates of never or rarely wearing a helmet when riding a bicycle during the past 12 months, never or rarely wearing a seat belt, text or Email while driving a vehicle and in a physical fight were very high. In Wuyuan county, 35.2% of the students have ever tried cigarette smoking, 51.5% of the students have had at least one drink of alcohol, 4.0% of the students have ever had sexual intercourse, 32.7% of the students describe their weight as slightly or very overweight, 49.1% of the students trying to lose weight. After standardized, the rate of health risk behaviors in Nanchang city was higher than that in Wuyuan county. Conclusion here are more healthrisk behaviors found among middle school students in Nanchang than in Wuyuan county.The targeted measures should be taken to develop healthy behavior habits of the students to effectively reduce its occurence.

Objective To provide experimental materials for exploring the function of breast cancer susceptibility gene 2(BRCA2) gene by establishing of an mouse immortalized mammary gland epithelial cell line as a cell model system.Methods In this study,the primary mouse mammary epithelial cells were isolated and purified by enzyme digestion and differential centrifugation.The resulting primary mouse mammary gland epithelial cells were transducted with lentivirus expressing human telomerase (hTERT) gene,and screened by hygromycin B.The surviving epithelial cells were further characterized by morphology observations and cytokeratin marker detection.Results Immortalized mouse mammary epithelial cells were obtained by infection of MMECs with lentivirus expressing human telomerase(hTERT) gene,screened by hygromycin B.Morphology observations and detection of the cytokeratin marker showed the immortalized MMECs had a typical morphology of luminal epithelial cells with strong expression of cytokeratin 14.Conclusion An immortalized mouse luminal epithelial cell line is successfully established with an uniform morphology,which provides a cell model system for the future exploration on BRCA2-related tumorigenesis.

Objective:To explore the feasibility and effectiveness of four-dimensional analysis of wall thickness for judgment of femoral bone healing.Methods:The clinical data were retrospectively analyzed of the 29 patients who had been diagnosed with femoral bone malunion or bone nonunion at Department of Orthopaedics, Air Force Hospital of Eastern Military Theater of PLA from June 2014 to June 2019. They were 24 males and 5 females with an average age of 41.8 years (from 5 to 54 years). There were 25 cases of delayed union and 4 cases of nonunion (including 2 ones of hypertrophic nonunion and 2 ones of at-rophic nonunion). Mimics software 2.0 and the four-dimensional analysis of wall thickness were used to simulate and analyze the fracture bone healing of the patients at different time points. In comparison with the CT data of the contralateral healthy limb, the fracture bone healing was judged to assist the diagnosis of femoral union, delayed union and nonunion on the basis of the changing trends with time. The original clinical diagnoses were thus revised and the eventual clinical healing outcomes were observed.Results:All the patients were followed up for 1 to 4 years (mean, 14.9 months). Of them, bone union was clinically diagnosed in 13 (44.8%), delayed bone union in 12 (41.4%) and bone nonunion in 4 (13.8%). According to the judgment by four-dimensional analysis of wall thickness, the clinical diagnoses were modified as follows: 9 cases (31.0%) had bone union, 18 cases (62.1%) delayed bone union, and 2 cases (6.9%) bone nonunion. There were statistically significant differences between the 2 methods ( χ2=15.399, P=0.031). Conclusions:The four-dimensional analysis of wall thickness can be used to analyze quantitatively the femoral bone healing, providing a relatively objective basis for clinical diagnosis of bone nonunion and delayed bone union.