1.Preparation of CD40L-PLL-CpG ODN conjugated complex and its targeting B lymphocytes
Jianwei JIANG ; Meizhen ZHENG ; Huilan ZENG ; Yaoying ZENG ; Jingfang DI ; Yuxia YAN ; Meiyu WU
Chinese Journal of Pathophysiology 1989;0(05):-
98%), the peak level of uptake occurred earlier, intracellular fluorescence intensity maintained much more stable. Expressions of CD19+, CD22+, CD20+ increased significantly. A_~570 values of MNCs proliferation and IgG levels in supernatant were all higher. CONCLUSION: CD40 ligand-PLL carrier system may delivery CpG ODN targeting to B lymphocytes, enhancing its immunological efficiency.
2.The prevention of acute graft versus host disease by Rhodamine 123-mediated photodynamic therapy
Huilan ZENG ; Kanger ZHU ; Jianwei JIANG ; Huaimin GU ; Jiye CAI ; Longqiu CHENG ; Zhigang YANG ; Meizhen ZHENG
Chinese Journal of Pathophysiology 2000;0(11):-
AIM: To evaluate the effect and safety of Rhodamine 123 (Rh123)-mediated photodynamic treatment (PDT) on acute graft versus host disease. METHODS: An acute graft versus host disease (aGVHD) mice model was established using C57B/6 mice as donors and BALB/c mice as recipients. Mixed lymphocytic cells were cultured with Rh123 (50 nmol/L) and irradiated by argon laser 30 mW/cm2 for 3 min, then transplanted to BALB/c recipient mice mixed with donor bone marrow. Hepatopoietic recovery, aGVHD occurrence, survival time after transplantation and pathological changes were observed. In addition, CD3+CD69+ positive rates of MLC were examined by flowcytometry. RESULTS: Occurrence of aGVHD decreased, degree of pathological manifestation became milder, survival rates were higher than non PDT groups. CD3+CD69+ rates of MLC cells treated with photodynamic therapy (PDT) and cultured for 24 h significantly decreased. CONCLUSION: Rh123-mediated PDT can effectively prevent aGVHD of allogeneic bone marrow transplantation in mice.
3.Analysis of relationship between P27, P53 and PCNA expression and its clinical significance
Youqun ZHU ; Meizhen WAN ; Youfu CAO ; Jianming ZHENG ; Yuedi HU ; Yongjuan SHI ; Zhengyao SHE
Academic Journal of Second Military Medical University 2001;22(5):450-452
Objective: To investigate the relationship between P27,P53 and PCNA expression in human gastric carcinoma tissues and clinicopathological parameters. Methods: The expression of P27,P53 and PCNA in 62 human gastric carcinoma tissues was examined with immunohistochemistry SP method. Results: Positive rates of P27,P53 and PCNA expression were 37.1%, 40.4%,83.9%. P27 expression was related with Bormann type, infiltrative depth, lymph node and distant metastasis and clinical stage. P53 expression was related with sex of patients, distant metastasis and clinical stage. PCNA expression was related with age of patients and infiltrative depth of tumor. P27 positive expression group was higher than negative group as to 5-year survival. P27 expression was in reverse relation with PCNA expression. Conclusion: The expression of P27, P53 and PCNA may be regarded as an important marker in judging malignant degree of gastric carcinoma,distant metastasis and prognosis.
4.Accepted: 2008-11-05Delivery and immunologic efficacy of CpG ODN targeting B lymphocytes of umbilical cord blood by CD40 ligand-receptor-mediated carrier
Huilan ZENG ; Xinai HAN ; Chen GU ; Jianwei JIANG ; Meizhen ZHENG ; Yuxia YAN ; Yaoying ZENG ; Jingfang DI
Chinese Journal of Tissue Engineering Research 2009;13(5):974-978
BACKGROUND: CpG oligodeoxynucleotide (ODN) is a type of highly effective immune adjuvant with low toxicity, which has an extensive application in gene therapy for many diseases. However, the specificity for species and cells leading to low uptake by cells and degradation by nuclease blocks its clinical application. OBJECTIVE: To explore the specific delivery and its immunologic efficacy of CpG ODN targeting B lymphocytes of umbilical cord blood by CD40 ligand-receptor-mediated carrier system. DESIGN, TIME AND SETTING: An observation and control experiment was performed at the Department of Hematology, and Department of Pediatric, the First Affiliated Hospital of Jinan University from April 2004 to October 2007. MATERIALS: Fresh umbilical cord blood with heparin was obtained from healthy, natal infant. Informed consent was obtained from his parents, and the experiment was approved by the hospital Ethics Committee. METHODS: CD40 ligand (CD40L)-EDC-PLL-CpG ODN conjugated complex was prepared. Mononuclear cells (MNCs) from umbilical cord blood were co-cultured with conjugated complexes. Uptake rate, mean fluorescence intensity of FAM marked CpG ODN, expressions of MNCs, proliferations of lymphocytes and the IgG levels of culture supematants were detected by flow cytometry, fluorescence techniques, MTT assay and ELISA, respectively. MAIN OUTCOME MEASURES: The uptake rate, the mean fluorescence intensity of CpG ODN by MNCs, subgroups and proliferations of lymphocytes, and IgG levels of culture supematants. RESULTS: Compared to the pure CpG ODN group, the uptake rate of the conjugated complexes group was higher (98%), the peak level of up-taking occurred earlier, and intracellular fluorescence intensity maintained much more stable. Expressions of CD19+, CD22+, and CD20+ was increased, A value and IgG levels in supematants were all higher than that of the control group. CONCLUSION: CD40 tigand-receptor-mediated carrier system is helpful for CpG ODN delivery targeting to B lymphocyte, enhancing its immunological efficiency.
5.The influence of humanitarian care on the depression and the anxiety of patients before they receive their abdominal surgery
Xiaofeng CHEN ; Heqiong CAO ; Chunmei DENG ; Chulan CHEN ; Fang ZHENG ; Meizhen QIN
Chinese Journal of Primary Medicine and Pharmacy 2009;16(7):1163-1164
Objective To investigate the influence of humanitarian care on the depression and the anxiety of patients before they receive their abdominal surgery. Methods 98 patients were randomly derided into the experi-ment group and the control group and each group consisted of 49 patients. Humanitarian care was conducted in the ex-periment group while the control group only implemented the traditional functional nursing. Self-rating Depression Scale and Self-rating Anxiety Scale were used as the evaluation tools. Results The depression and the anxiety values of patients in the experiment group were obviously lower than those in the control group. Comparing both groups (P <0.05), such difference was of statistical significance. Conclusion The humanitarian care can reduce the feeling of depression and anxiety of patients, which is good for the recovery after surgery.
6.Laboratory investigation of reactive plasmacytosis in patients with severe fever with throbocytopenia syndrome
Rui ZHENG ; Meizhen DAI ; Qing WANG ; Huazhong CHEN ; Huijun LIN ; Baoguo CHEN ; Boli LI
Chinese Journal of Infectious Diseases 2017;35(3):146-150
Objective To investigate the immunological characteristics and clinical significance of reactive plasmacytosis in patients with severe fever with throbocytopenia syndrome (SFTS).Methods Bunyavirus-infected patients who were diagnosed with SFTS were collected from March 2015 to October 2015 in Taizhou Hospital.Morphology analysis of bone marrow and peripheral blood (PB) smear, as well as flow cytometry analysis of plasma cell immune phenotype from peripheral blood were conducted.Serum immunoglobulin levels and helper T hymphocytes (Th)1/Th2 cytokine expressions were detected.Mann-Whitney U test was used.Results PB plasma cells from all of the SFTS patients increased in varying degrees, and the phenotype of the plasma cells was CD19+CD38++CD45+CD138+, which indicated normal mature plasma cells.The ratio of PB plasma cells was >0.030 in 10/16 patients, and >0.300 in 2/16 patients.The ratios of PB plasma cells in the patients with severe and critical groups were significantly higher than that in the mild group (0.052 vs 0.016, P<0.05).Monocytoid histiocytes and hemophagocytes were observed in the BM morphology of 9 patients.Three of them were diagnosed as hemophagocytic lymphohistiocytosis (HLH).The ratio of plasma cells was more than 0.030 in the bone marrow of 8 patients.The serum levels of interlewkin (IL)-6, IL-10 and interferon (IFN)-γ in acute phase were significantly elevated with the median level of 49.75 ng/L, 26.98 ng/L (reference value 2.6 to 4.9 ng/L) and 17.57 ng/L, respectively.While the levels of IL-2, IL-4 and twmor necrosis fautor(TNF)-α were not significantly changed.The serum IL-6 and IL-10 levels in the patients with severe and critical groups were both significantly higher than those in the mild group (IL-6: 132.36 vs 22.81 ng/L;IL-10: 75.28 vs 6.33 ng/L, both P<0.05), but the difference of IFN-γ level was not significant (P>0.05).The serum IgG, IgA and IgM levels did not increase in acute stage, with the median of 11.6 g/L, 2.56 g/L and 1.60 g/L (reference value 0.46 to 3.04 g/L), respectively.Conclusion The patients with SFTS show excessive humoral and cellular immunity, and the severity of disease is positively correlated with the ratio of peripheral plasma cells and the levels of cytokines IL-6 and IL-10.
7.Effect of Rehabilitation Gymnastics with Music on Postlaparoscopic Pain Syndrome
Chunlan WU ; Meizhen WEN ; Xiaoyun DENG ; Lixiu LEI ; Shi LIAO ; Xiaoqing ZHENG ; Cuilan MA
Chinese Journal of Rehabilitation Theory and Practice 2009;15(6):591-592
Objective To observe the effect of rehabilitation gymnastics with music on non-incisional pain of gynecological patients after laparoscopic operation.Methods 192 gynecological patients undergone laparoscopic operation were divided into the music group (66 cases, adopted rehabilitation gymnastics matching music after operation), non-music group (64 cases, adopted rehabilitation gymnastics) and routine group (62 cases, adopted routine nursing without rehabilitation gymnastics or music).Results The patients of the music group got pain eased more obviously than those of the non-music group and rule group ( P<0.05).Conclusion The rehabilitation gymnastics with music can relieve non-incisional pain after gynecological laparoscopic operation, and improve anus exhausting.
9.Tissue culture and polyploidy induction of Morinda officinalis.
Meizhen LIN ; Qingzhen WU ; Song ZHENG ; Huiqiao TIAN
China Journal of Chinese Materia Medica 2011;36(17):2325-2328
OBJECTIVETo establish an effective protocol for plant generation and induce polyploidy of Morinda offcinalis.
METHODCallus was induced from immature embryo of M. officinalis and polyploidy was inducted by using colchicine treatment method. Chromosome was detected by flow cytometry.
RESULT AND CONCLUSIONThe highest induction rate of polyploidy was 18.40%, which was obtained with 500 mg x L(-1) colchicine treatment for 5 days. Roots of polyploid were bigger than diploid. Advantages of using immature embryo as explants are easy for sterilization, higher rate of callus induction and low degree dedifferentiation. The induced polyploidy of M. officinalis may have a value for spread of cultivation.
Chromosomes, Plant ; genetics ; Morinda ; genetics ; growth & development ; Polyploidy ; Tissue Culture Techniques ; methods
10.Research update on the sleep patterns and influencing factors of childhood abuse victims
PENG Lianhua, TAN Minghui, MAO Ping, ZHENG Meizhen
Chinese Journal of School Health 2021;42(12):1907-1911
Abstract
As a common public health problem in society, it can seriously affect sleep, and lead to sleep structure disorder, sleep pattern changes, and sleep disturbance. Poor sleep can adversely affect the normal development of physiological, psychological, cognitive, and behavioral functions, and reduce quality of life. On the basis of summarizing the definition, classification, and epidemic status of child abuse, this paper summarizes the sleep characteristics and influencing factors of childhood abuse victims. It aims to provide a scientific basis for developing prevention and intervention measures to address sleep problems among childhood abuse victims, so as to improve sleep quality, and promote their physical and mental health.