1.Pediatric pilocytic astrocytoma with monomorphous pilomyxoid features and plexiform pattern: report of a case.
Chinese Journal of Pathology 2011;40(8):565-566
Astrocytoma
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metabolism
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pathology
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surgery
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Brain Neoplasms
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metabolism
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pathology
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surgery
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Child, Preschool
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Diagnosis, Differential
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Ependymoma
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metabolism
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pathology
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Female
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Follow-Up Studies
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Glial Fibrillary Acidic Protein
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metabolism
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Humans
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Neoplasm Recurrence, Local
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Neoplasm Staging
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Neurofibroma, Plexiform
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metabolism
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pathology
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S100 Proteins
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metabolism
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Vimentin
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metabolism
2.Proliferation of scar tissues following fresh versus preserved amniotic membrane transplantation with trabeculectomy
Jing GUO ; Hongwei WANG ; Xuefang YANG
Chinese Journal of Tissue Engineering Research 2010;14(18):3323-3326
BACKGROUND: Fresh amniotic membrane has been extensively used in treating ocular surface disease, which can inhibit fibrous tissue proliferation, inhibit neovascularization, and relieve inflammation. However, its application in treating glaucoma is rarely reported.OBJECTIVE: To explore the antiproliferative effect of fresh amniotic membrane on postoperative scar and compared with preserved amniotic membrane.METHODS: A total of 36 New Zealand white rabbits were randomly divided into 3 groups. Fresh amniotic membrane and preserved amniotic membrane combined with trabeculectomy separately underwent fresh amniotic membrane and preserved amniotic membrane transplantation. The control group was subjected to trabeculectomy alone. After 1, 2, 3, and 4 weeks, the morphology and function of filtering bleb were checked, and the platelet-derived growth factor (PDGF) of surrounding tissue was determined by immunohistochemical method.RESULTS AND CONCLUSION: Fresh amniotic membrane and preserved amniotic membrane groups displayed bulged filtering bleb with good filtering function. Pathological observation showed that fibroblasts of the filtration pathway had less, but more sparse scar tissues than control group, but inflammatory infiltration was observed in all groups. The cavity of different sizes and shapes were detected in filtration pathway of control group, which was replaced by fibrous tissue hyperplasia, with a large number of fibroblasts. Immunohistochemical results showed that the expression of PDGF was significantly less in fresh amniotic membrane and preserved amniotic membrane groups compared with the control group, and the PDGF expression was less in fresh amniotic membrane group than the preserved amniotic membrane group. Fresh and preserved amniotic membrane can improve the filtering bleb function, reduce scar formation, and maintain the patency of filtering pathway. Moreover, the effects of fresh amniotic membrane is better than preserved amniotic membrane.
3.Application research of TBL based on evidence-based medicine PICOS model in practice teaching of Neurology
Shuo ZHANG ; Jing AN ; Juan FENG ; Yang GUO
Chinese Journal of Medical Education Research 2016;15(11):1150-1153,1154
Objective To explore the effect of TBL based on evidence-based medicine PICOS model in practice teaching of neurology. Methods Totally 47 medical undergraduates in our department were chosen and randomly divided into 2 groups during March 2016 to April 2016. 24 students in the trial group were taught with TBL based on PICOS, while other 23 students in the control group were only taught with conventional TBL method. After three times clinical practices, the test referring to disease pathogenesis, clinical manifestations, auxiliary examinations, diagnosis and treatments of related diseases was performed, and meanwhile, questionnaires were distributed to students in order to survey their satisfaction degree of teaching methods. All the evaluation results and scores of two groups were compared. Statistical data were analyzed by using t-test or Chi-square test with SPSS 17.0 software. Results The score of the theoretical test of trial group was significantly superior to the control group [(89.08±3.60) vs. (79.09±7.75), t=5.707, P=0.03 ]. Survey showed that in the experimental group , the number of students in the trial group who thought teaching method could help understand clinical thinking of neurology and could help integrate the theory into clinical practicewas significantly higher than that in the control group (P<0.05). Conclusion In the clinical teaching of neurology, the TBL based on PICOS model is more effective than conventional TBL method for medical undergraduates.
4.New drug delivery systems and the function of camptothecin
Jing DONG ; Shenglei GUO ; Yang WANG
Chinese Journal of Tissue Engineering Research 2007;0(23):-
Camptothecin is known to possess a broad spectrum of anticancer activities, however due to its high toxicity and low solubility in water, camptothecin is severely limited in clinic. To optimize the effects of camptothecin in the treatment of malignancies, besides the structural modification and reconstruction of camptothecin, the establishment of new drug delivery systems becomes a hot topic in the camptothecin research. This paper aims to summarize the advanced progress in the delivery system and function of camptothecin at recent years. The advances in improving the poor solubility, lactone ring instability, controlled release systems and targeting delivery systems of camptothecin are also reviewed. As the related methods and technologies are improved and developed, camptothecin will be a group of prospective anticancer drugs.
5.Analysis of congenital coronary artery anomalies in adult population undergoing coronary angiography
Junjuan YANG ; Jing CAO ; Sanqiang GUO
Chinese Journal of Interventional Cardiology 1996;0(01):-
Objective To investigate the incidence and clinical significance of coronary artery anomalies in adults undergoing coronary angiography. Methods Data of all patients underwent coronary angiography from Jan 2001 to Nov 2003 in our hospital were reviewed retrospectively. Results Among 2?824 adult patients, 61 had coronary artery anomalies of which 84.1% were anomalous origin and distribution. The total detection rate of coronary artery anomalies was 2.1%. Anomalies were found to be happened more in the right coronary artery than in the left coronary artery. Four cases failed to undergo selective right coronary angiography. Conclusion Coronary artery anomalies are not rare in adults. Some types of coronary artery anomalies can induce myocardium ischemia and require intervention. Catheterization diagnosis and therapy of patients with anomalous origin of coronary artery may be difficult2?
7.Relationship between JAK2-V617F Gene Mutation in Peripheral Blood Mononuclear Cells and Thrombotic Events in Patients with Myeloproliferative Neoplasms
Xiaobo GUO ; Le YANG ; Kangkang YAN ; Ruili YANG ; Jing LIN
Journal of Modern Laboratory Medicine 2017;32(2):143-145
Objective To analyze the correlation between mutation in JAK2-V617F gene in peripheral blood mononuclear cells and thrombotic events in patients with myeloproliferative.Methods Investigation of thrombosis in 391 patients with MPN,using QRT-PCR to detect JAK2-V617F gene mutation in peripheral blood of patients.Result 105 cases of thrombotic events in 391 MPN patients (26.9%),84 cases of thrombotic events in 273 JAK2-V617F gene mutation positive patients (30.8 %),however,21 cases of thrombotic events in 118 J AK2-V617F gene mutation negative panents (17.8 %).The difference between the two groups was statistically significant (x2 =32.30,P<0.01).In the PV group,45 cases of thrombosis events in JAK2-V617F positive patients (29.2 %),6 cases of thrombosis events in JAK2-V617F negativepatients (42.9%),there was significant difference between the two groups (x2 =2.13,P>0.05).In the ET group,18 cases of thrombosis events in JAK2-V617F positive patients (32.2%),9 cases of thrombosis events in JAK2-V617F negative patients (15.8%),there was significant difference between the two groups (x2 =12.32,P<0.01).In the PMF group,21 cases of thrombosis events in JAK2-V617F posinve patients (33.3 %),6 cases of thrombosis events in JAK2-V617F negativepatients (12.8 %),there was significant difference between the two groups (x2 =14.32,P<0.01).Conclusion JAK2-V617F positive MPN patients were more susceptible to thrombotic events especially in patients with ET and PMF.
8.Synthesis and Anti-HIV-1 Activity of One Schiff Base Derivative with Glucosamine of Gossypol
Jian YANG ; Wei ZHAO ; Jingxiang YANG ; Zhenhua JING ; Xianxi GUO
China Pharmacist 2017;20(5):787-790
Objective: To confirm the structure and preferential conformation of the Schiff base of gossypol with 1, 3, 4, 6-tetra-O-acetyl-β-D-glucosamine and explore its anti-HIV-1 activity.Methods: The Schiff base of gossypol with 11, 3, 4, 6-tetra-O-acetyl-β-D-glucosamine was synthesized and identified by FT-IR, NMR spectroscopy and the PM6 semi-classical calculation.The inhibitory activity of the novel compound against the laboratory-adapted HIV-1IIIB strain was examined using the HIV-1IIIB/TZM-bl indicator cell culture system.Results: The 1H and 13C-NMR signals of the new Schiff base were assigned.The PM6 semi-classical calculation indicated that enamine-enamine tautomeric form of the new Schiff base was more stable,which was stabilized by the intramolecular hydrogen bonds.The anti-HIV-1 test showed that the compound could block the entry of HIV-1IIIB into the target cells.Conclusion: The Schiff base of gossypol with 1, 3, 4, 6-tetra-O-acetyl-β-D-glucosamine exhibits enamine-enamine tautomeric form in solution, which shows potential anti-HIV-1 activity.
9.Effect of Passive Position Acupuncture on Cerebral Palsy
Jun-sheng YANG ; Li-fang YANG ; Jing QIAO ; Xiangyang GUO
Chinese Journal of Rehabilitation Theory and Practice 2006;12(3):248-249
ObjectiveTo observe the clinical effect of compositive treatment on cerebral palsy children with rapid acupoint acupuncture at passive position.Methods37 children were treated with compositive treatment including acupoint acupuncture and physical training.Other 21 who treated with medicine were included as control.Results3 cases were cured and 33 cases were markedly effective in treatment group,which was better than that of control(P<0.05).ConclusionThe therapy composed of rapid acupoint acupuncture and physical training can significantly improve the function of children with cerebral palsy.
10.Construction and application of network teaching platform for medical cell biology
Ke YANG ; Jing YU ; Jing YANG ; Haiying GUO ; Xiaohua LIAN ; Tian YANG
Chinese Journal of Medical Education Research 2012;11(2):170-173
Cell biology is one of the life science's four basic disciplines.With the rapid development of knowledge,network teaching breaks through the traditional class teaching's limitations,and is significant to constructing innovative teaching modes.In view of the medical undergraduate teaching characteristics,we have summed up the experience of network teaching platform's establishment and application and found that interactive network teaching is helpful to knowledge updating,conducive for students to play a principal role,and beneficial to enhancing the communication between teachers and students.