1.Constructing the assessment system of the overall quality of postgraduates
Yanru XU ; Xiang HE ; Changmao HU ;
Journal of Medical Postgraduates 2003;0(04):-
To improve the development of postgraduate and build up the consciousness of competition, we should assess the overall quality of postgraduate generally. The quality is about mentality and moral, science and culture, innovation, practice, physical and psychological health. The assessment system must have these points followed: overall, whole course, trendy, continuous, synthetic.
2.A New Method to Segment Multiple Sclerosis Lesions Using Multispectral Magnetic Resonance Images.
Yan XIANG ; Jianfeng HE ; Lei MA ; Jiaping XU
Journal of Biomedical Engineering 2015;32(2):330-335
Magnetic resonance (MR) images can be used to detect lesions in the brains of patients with multiple sclerosis (MS). An automatic method is presented for segmentation of MS lesions using multispectral MR images in this paper. Firstly, a Pd-w image is subtracted from its corresponding T1-w images to get an image in which the cerebral spinal fluid (CSF) is enhanced. Secondly, based on kernel fuzzy c-means clustering (KFCM) algorithm, the enhanced image and the corresponding T2-w image are segmented respectively to extract the CSF region and the CSF-MS lesions combinatoin region. A raw MS lesions image is obtained by subtracting the CSF region from CSF-MS region. Thirdly, based on applying median filter and thresholding to the raw image, the MS lesions were detected finally. Results were tested on BrainWeb images and evaluated with Dice similarity coefficient (DSC), sensitivity (Sens), specificity (Spec) and accuracy (Acc). The testing results were satisfactory.
Algorithms
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Brain
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pathology
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Humans
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Image Enhancement
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Magnetic Resonance Imaging
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Multiple Sclerosis
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diagnosis
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Sensitivity and Specificity
3.Effects of Euphorbiae ebracteolatae Radixon the proliferation and apoptosis in human papillomavirus-18-infected HeLa cells
Ping XU ; Xiang HE ; Xiaoying ZHANG ; Huimin ZHANG
International Journal of Traditional Chinese Medicine 2015;(6):529-531
ObjectiveTo investigate effects ofEuphorbiae ebracteolatae Radixon the proliferation and apoptosis in human papillomavirus (HPV)-18-infected HeLa cells.MethodsThe alcohol extract ofEuphorbiae ebracteolatae Radixwas prepared. Cell proliferation was determined using the MTT assay, and apoptotic cells was determined using the Hoechst 33258 staining.ResultsHPV-18-infected HeLa cells were treated with 10, 20 μg/mlof the alcohol extract ofEuphorbiae ebracteolatae Radixfor 12 h, the cell proliferation inhibition rate were significantly increased compared to the control group (16.36% ± 5.06%, 18.59% ± 5.99%; allP<0.01);HPV-18-infected HeLa cells were treated with 0.625, 1.25, 2.5, 5, 10, 20 μg/ml of the alcohol extract ofEuphorbiae ebracteolatae Radixfor 72 h, the cell proliferation inhibition rate were significantly increased compared to the control group (13.82% ± 3.66%, 30.24% ± 6.58%, 43.29% ± 4.29%, 53.32% ± 1.41%, 54.24% ± 1.97%, 50.68% ±1.74%;allP<0.01). The Hoechst 33258 staining showed that HPV-18-infected HeLa cells were treated with 10 μg/ml of the alcohol extract ofEuphorbiae ebracteolatae Radixfor 24 h, the apoptotic cells were found.ConclusionEuphorbiae ebracteolatae Radixcould inhibit the proliferation and induce apoptosis in HPV-18-infected HeLa cells.
4.Study on the competence of master of public health
Shihao WEN ; Weimin REN ; Fang XU ; Dong ZHOU ; Xiang HE
Chinese Journal of Medical Education Research 2013;(10):989-992
A questionnaire was used to survey the perspective of the 22 mentors,24 students, 27 graduate students and 27 public health units on the competence of MPH student. The result showed that the practice skill,analyzing skill,program plan and practice skill,and emergency reaction abil-ity got more attention. This suggested that to the training of MPH,the training objective should focus on the ability to resolve problems; the curriculum should focus on the characters of public health and on the practice training.
5.Effect of blood-stage treatment on cytokine IFN-?,IL -4,IL-10 and IL-17 of patients with psoriasis vulgaris in the periods
Xiang HE ; Jie LIU ; Ping XU ; Xianglong PAN ; Huimin ZHANG
International Journal of Traditional Chinese Medicine 2014;(8):692-694
Objective To explore the mechanism of blood-stage treatment in patients with psoriasis vulgaris through studying the level change of IFN-?, IL-4, IL-10 and IL-17 in patients with blood-stage treatment during activity and quiescence period separately. Methods 20 patients with psoriasis vulgaris in active stage(blood heat syndrome)and 20 patients with psoriasis vulgaris in resting stage(blood stasis syndrome) were recruitedto observe the treatment effects by the PASI score,and to observe thechange of IFN-?, IL-4, IL-10, IL-17 before and after treatment in the serum by ELISA. Results The PASI scores of two groups were both significantly decreased after treatment (blood heat syndrome group t=6.685, P<0.01;blood stasis syndrome group t=4.959, P<0.01). The levels of cytokines were significantly different between patients in the periods of activity and quiescence. Onvarying degrees, the levels of cytokines of two groups were improved after treatment. The levels of cytokines IFN-?, IL-17 in blood heat group significantly decreased(t=3.024, P<0.01;t=2.543, P<0.05). The levels of cytokines IL-17 drop but the levels of cytokines IL-4 raised in blood stasis group,that were significantly differentwith the levels before treatment(t=2.417, P<0.05; t=2.547, P<0.05). Conclusion The levels of INF-?, IL-4, IL-10 and IL-17 could be effectively modulated with blood-stage treatment in treating psoriasis vulgaris.
6.Mechanism of IL-35 inhibition of inflammatory response and T cell response in alleviate of allergic rhinitis
Xiang XU ; Qingwen HE ; Caiwen XIAO ; Peng XIN
Chinese Journal of Immunology 2017;33(9):1386-1391
Objective:To investigate the effect of IL-35 on inflammatory response and T cell response in allergic rhinitis.Methods: 37 patients(observation group) with allergic rhinitis and 35 healthy volunteers(control group) after allergen detection of allergic rhinitisin in our hospital from Jan 2012 to Jan 2016 were selected as study subjects.The peripheral blood of observation group and control group were collected,and the serum levels of IL-35 were detected by ELISA.The animal model of allergic rhinitis in mice was established,the peripheral blood of mice was collected,and the serum level of IL-35 and IgE were detected by ELISA.The eosinophils that infiltrated in nasal mucosa were detected after tissue biopsy in mice.The mouse spleen cells were isolated and the ovalbumin antigen was added in the culture medium,IL-35 was or was not added into the culture medium,the ovalbumin specific T cell responses was detected.The cytokines IL-2,IL-4,IL-5,IL-10,IL-13,IL-17,IL-23,IL-27 and TNF-α in culture supernatant of ovalbumin specific T cells were detected by ELISA.The expression of IL-2,IL-4,IL-5,IL-10,IL-13,IL-17,IL-23,IL-27 and TNF-α in ovalbumin specific T cells were detected by Real-time PCR.The activation of JNK,Erk1/2 and p38 signal pathway in ovalbumin specific T cells were detected by Western blot.Results: The serum level of IL-35 in observation group was significantly lower than control group(P<0.05).The results showed that the number of eosinophils which infiltrated in AR mice nasal mucosa was significantly higher than normal mice(P<0.05),while the serum level of IL-35 in AR mice was significantly lower than normal mice(P<0.05).Ovalbumin specific T cell reactivity assay showed that IL-35 could significantly inhibit the T cell response.ELISA and Real-time PCR results showed that IL-35 could significantly down regulate the expression of IL-4,IL-5,IL-13,IL-17,IL-23 and TNF-α,and up regulate the expression of IL-2,IL-10 and IL-27.The Western blot results showed that IL-35 can inhibit the activation of JNK,Erk1/2 and p38 signal pathway of ovalbumin specific T in cells.Conclusion: IL-35 can regulate the expression of inflammatory cytokines in inflammatory response and inhibit T cell response,thus reducing allergic rhinitis,the mechanism may be through regulation of JNK,Erk1/2 and p38 signal pathway activation.
7.CBR improves elder stroke patients' ability of activities of daily living
Yan WANG ; Xiang-dong XU ; Shi-ming HE ; Ming YANG
Chinese Journal of Rehabilitation Theory and Practice 2002;8(12):762-763
ObjectiveTo observe the effect of community-based rehabilitation (CBR) on older stroke patients in ability of activities of daily living (ADL).Methods50 older stroke patients were randomly divided into the rehabilitation group and control group. The rehabilitation group was treated with motor function exercise and ADL training, while the control group only took medicine. Two groups were evaluated with Barthel index before and after treatment. ResultsScores of Barthel index on the rehabilitation group were higher than that on the control group after treatment, and there was a significantly difference between two groups (P<0.01). Conclusions CBR has the significant effect on improving ADL in older stroke patients.
9.Expression and role of TLR and SOCS mRNA in newborn infants.
Lin WANG ; Jian-bo XU ; He-shui WU ; Jin-xiang ZHANG ; Yuan TIAN
Chinese Journal of Pediatrics 2006;44(8):621-622
Cells, Cultured
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Enzyme-Linked Immunosorbent Assay
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Female
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Fetal Blood
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Humans
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Infant, Newborn
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Lipopolysaccharides
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Lymphocytes
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metabolism
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Male
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RNA, Messenger
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metabolism
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Reverse Transcriptase Polymerase Chain Reaction
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Suppressor of Cytokine Signaling 1 Protein
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Suppressor of Cytokine Signaling 3 Protein
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Suppressor of Cytokine Signaling Proteins
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genetics
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metabolism
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Time Factors
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Toll-Like Receptor 2
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genetics
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metabolism
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Toll-Like Receptor 4
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genetics
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metabolism
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Tumor Necrosis Factor-alpha
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metabolism