1.Advances in the research of anti-organ fibrosis drugs
Qiang REN ; Lu-yong ZHANG ; Zheng LI
Acta Pharmaceutica Sinica 2020;55(11):2510-2528
Fibrosis is a pathological process characterized by tissue scars and can occur in many organs of the human body. Organ fibrosis is manifested by increased fibrous connective tissue and reduced parenchymal cells in organ tissues, which can lead to destruction of organ structures and reduced function, which seriously endangers human health. Current strategies for treating organ fibrosis include: blocking the transforming growth factor-
2.Simvastatin selectively inhibits proliferation and induces apoptosis of chronic myelogenous leukemia cells
Hanyun REN ; Nianxian ZHANG ; Hong XU ; Daopei LU
Journal of Peking University(Health Sciences) 2001;33(2):136-139
Objective: To explore the effect of simvastatin, an inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase (the rate-limiting enzyme of cholesterol synthesis) on the proliferation and apoptosis of chronic myelogenous leukemia (CML) cells. Methods: Both normal and CML bone marrow progenitor cells were assayed in semisolid methylcellulose culture after incubation for 24 hours in suspension culture with 10 mg*L-1 simvastatin. Also, sub-G1 cells and DNA end-labeling positive cells as apoptotic cells were identified by flow cytometry after being exposed to simvastatin for 72 hours. Results: Simvastatin selectively inhibited proliferation and induced apoptosis of CML cells, but had no much influence on normal bone marrow cells. Conclusion: CML cells are more sensitive to a short-term exposure to simvastatin than normal bone marrow cells. It will be a promisingly effective chemotherapeutic agent or in vitro purging agent in autologous stem cell transplantation for the treatment of CML.
3.Application of zingiberol combined with purple burn ointment in prevention of chemotherapy-induced phlebitis
Hong LU ; Jianhua REN ; Chungui ZHANG ; Minzhao XU
Chinese Journal of Practical Nursing 2010;26(20):54-55
Objective To explore the effect of zingiberol combined with purple burn ointment in prevention of chemotherapy- induced phlebitis. Methods 200 cases of peripheral intravenous chemotherapy were randomly divided into the experimental group and the control group with 100 cases in each. The control group was given conventional infusion chemotherapy drugs, the experimental group used zingiberol combined with purple bum ointment to embrocate the skin around the vein to prevent phlebitis. After chemotherapy, the results were observed and recorded. Results The incidence of phlebitis in the experimental group significantly reduced compared with the control group. Conclusions Embrocation with zingiberol and purple burn ointment can prevent chemotherapy-induced phlebitis, which is simple with significant effect.
4.Clinical effects of treating 72 patients with chronic renal failure and hemodialysis by warming kidney and invigorating spleen
Ling LU ; Lanmei ZHANG ; Jun WU ; Li REN ; Guo LIU
International Journal of Traditional Chinese Medicine 2014;(8):695-698
Objective To observe the effect of nutritional status change on hemodialysis patients of chronic renal failure and deficiency of spleen and kidney treated bytraditional Chinese medicine(TCM) of warming kidney and invigorating spleen. Methods In our center, 146 patients who were diagnosed chronic renal failure belonging to deficiency of spleen and kidney in TCM were received hemodialysis between Jun2012 and May2013. All patients were randomly divided into a treatment group (n=72) and a control group (n=74). 74 patients in the control groupreceived conventional hemodialysis and medicine treatment, and 72 patients in treatment group received conventional hemodialysis、medicine treatment and TCM treatment of warming kidney and invigorating spleen. The comprehensive nutritional assessment of all patients were treated by modified SGAN method (MQSGAN), anthropometric, biochemical and laboratory examination before and 6 monthsafter the treatment. Results The treatment group patients of modified SGAN(9.58±3.15), BMI (body mass index 19.34±0.52) Kg/m2, MAC(upper arm circumference 27.51±1.95)cm, TSF(tricepsskinfold thickness 12.92± 2.42) mm and MAMC(upper arm muscle circumference 23.64±1.96)cm were significantly improved compared with the control g roup(respectively data 13.23±3.14, 17.29±0.76) Kg/m2, (24.01±2.55, 10.58±2.71) mm, (20.71±2.04)cm, P<0.05,and treatment group patients with ALB(serum albumin 38.19±1.95)g/L, PA(prealbumin 2.23±0.16)g/L, TF(transferrin 0.21±0.04)g/L, CH(cholesterol 4.02±0.26)mmol/L, BUN(blood urea nitrogen 19.58±2.17)mmol/L and SCr (creatinine 869.54±79.15)mmol/L were significant improved also compared with the control group(respectively data 33.73±1.31)g/L, (1.67±0.25)g/L, (0.17±0.02)g/L, (3.22± 0.46)mmol/L, (16.27±1.12)mmol/L, (792.73±71.65)mmol/L, P<0.05. Conclusion Traditional Chinese medicine of warming kidney and invigorating spleen can improve the nutritional status and quality of life on patients with chronic renal failure belonging to deficiency of spleen and kidney type during hemodialysis.
5.Study of Electroacupuncture at Ganshu (BL18) and Zusanli (ST36) on Interaction between Brain and Gut in Rats with Depressive Functional Dyspepsia
Kaiyan JIANG ; Haibo LI ; Ke ZHANG ; Xiaowei GUO ; Lu REN
Chinese Journal of Information on Traditional Chinese Medicine 2016;23(3):62-66
Objective To observe the effects of electroacupuncture at Ganshu (BL18) and Zusanli (ST36) on depression state and gastrointestinal motility and relevant protein expressions in brain of rats with stress-induced depressive functional dyspepsia. Methods Totally 48 Wistar rats were randomly divided into normal, model, electroacupuncture (EA) and sham-operation group, with 12 rats in each group. Depressive functional dyspepsia model was established by chronic unpredictable mild stress protocols. From day 15 to day 28, the EA group was given electroacupuncture at BL18 and ST36, and the sham-operation group was stimulated by electroacupuncture at 1/3 and 2/3 of the tail. Body weight test, open field test and sucrose preference test were measured on day 0, day 14 and day 28. After 14-day administration, gastric residual volume and intestinal propulsion rate of semisolid paste were detected. The expression of βCaMK inⅡ lateral habenulas and BDNF in hippocampus were measured by Western blot. Results Compared with the normal group, the weight, the sucrose preference rate, the behavior score, the small intestinal propulsion rate of semisolid paste and the expression of BDNF in hippocampus decreased significantly both in the model group and sham-operation group (P<0.01), and the gastric residual volume of semisolid paste and the expression of βCaMK inⅡ lateral habenulas increased significantly (P<0.01). Compared with the model group, the weight, the sucrose preference rate, the behavior score, the small intestinal propulsion rate of semisolid paste and the expression of BDNF in hippocampus increased significantly in EA group (P<0.01), and the gastric residual volume of semisolid paste and the expression of βCaMK inⅡ lateral habenulas decreased significantly (P<0.01). Compared with the sham-operation group, the expression of βCaMKⅡ in lateral habenulas decreased significantly, the expression of BDNF in hippocampus increased significantly in EA group (P<0.01). Conclusion Electroacupuncture at Ganshu (BL18) and Zusanli (ST36) can improve depression and gastrointestinal motility of rats with depressive functional dyspepsia, which may be related to the inhibition of βCaMK inⅡ lateral habenulas and the activation of BDNF in hippocampus dyspepsia.
6.Effects of Uncariae Ramulus Cum Uncis Extract on Neurons of MPTP-induced PD Model Mice
Fang LU ; Yuee JING ; Yandong REN ; Shuxiang ZHANG ; Shumin LIU
Chinese Journal of Information on Traditional Chinese Medicine 2016;23(4):57-60
ObjectiveTo study the neuron protection mechanism of Uncariae Ramulus Cum Uncis extract for the MPTP-induced PD mice.MethodsC57BL/6 mice were randomly divided into control group, model group, Uncariae Ramulus Cum Uncis extract group and madopar group, and injected with MPTP in abdominal cavity. Behavior test was used to detect grabbing capacity and body movement coordination capacity: three biochemical indexes (SOD, MDA, GSH-Px) were detected by biochemical process and the activity of two immune enzyme-linked indexes (IL-1β, IL-6) were detected by enzymelinked immunosorbent assay.ResultsCompared with the control group, the autonomic activity numbers of mice increased and climbing pole time decreased in the model group (P<0.05), enzymatic activity of SOD and GSH-Px decreased significantly and the contents of MDA, IL-1β and IL-6 increased obviously (P<0.01). Compared with model group, the autonomic activity numbers of mice increased and climbing pole time decreased in the Uncariae Ramulus Cum Uncis extract group and madopar group (P<0.05). Enzymatic activity of SOD and GSH-Px increased and the contents of MDA and IL-1β and IL-6 decreased (P<0.05,P<0.01).ConclusionUncariae Ramulus Cum Uncis extract can reduce neuronic apoptosis PD mice, whose therapeutic action may be realized through eliminating oxygen free radicals, improving oxidation resistance and reducing inflammatory reactions.
7.Role of C-terminal Src kinase in angiotensin Ⅱ-induced cytoskeletal rearrangement in glomerular podocytes
Lu ZHANG ; Zhilong REN ; Qian YANG ; Yiqiong MA ; Guohua DING
Chinese Journal of Nephrology 2015;31(11):842-847
Objective To investigate the effects of angiotensin Ⅱ (Ang Ⅱ) on the expression of C-terminal Src kinase (Csk) in Ang Ⅱ-infused rat model and cultured podocytes,and to explore the role of Csk in Ang Ⅱ-induced cytoskeletal rearrangement of podocytes.Methods Twenty-four Wista rats were randomly subjected to normal saline infusion,or Ang Ⅱ infusion at 400 ng · kg1 · min-1 (via subcutaneous osmotic minipumps) for 2 or 4 weeks.Renal histomorphology was evaluated through electron microscopy.The expression of glomerular Csk was analyzed by immunofluorescence and Western blotting.In vitro,conditionally immortalized mouse podocytes were cultured and treated with Ang Ⅱ doses ranging from 10-9 mol/L to 10-5 mol/L and for different hours.The expression of podocytes Csk was assessed by Western blotting.After transfection to podocytes with Csk siRNA,FITC-conjugated phalloidin was used to stain F-actin,to investigate the role of Csk in Ang Ⅱ-induced or cytochalasin D-induced cytoskeletal rearrangement.Results (1) Examination of Ang Ⅱ infusion rats glomerular and podocyte ultrastructure by electron microscopy revealed foot process effacement and fusion; (2) In Ang Ⅱ infusion rats,the expression of glomerular Csk was increased (P < 0.05); (3) In vitro,Ang Ⅱ-stimuli up-regulated the expression of Csk (P < 0.05),and the effects of Ang Ⅱ were on dose-dependent and time-dependent manner; (4) Ang Ⅱ-induced disruption of F-actin was alleviated by Csk siRNA transfection in cultured podocytes; furthermore,cytochalasin D depolymerized the F-actin cytoskeleton,while Csk siRNA stabilized the actin filaments.Conclusion The enhanced expression of Csk may be involved in Ang II-induced podocytes cytoskeletal rearrangement and foot process fusion.
8.Cerebellar mutism and childhood medulloblastoma
Yunmei LIANG ; Yansong LU ; Jin ZHANG ; Siqi REN ; Fang GUO
Journal of Clinical Pediatrics 2015;(9):813-816
Objective To investigate the relationships among cerebellar mutism (CM), relapsed medulloblastoma (MB) and the primary tumor location.MethodsA retrospective analysis was conducted in 114 children over 3 years old with MB from November 2011 to April 2015.ResultsThe median onset age was 84.7 months (36.4 to 184.7 months) in 114 children with MB (77 boys and 37 girls), of whom there were 48 cases of recurrence. There were twenty two cases of CM and the overall incidence of CM was 19.3% (22/114). The incidence of CM was 19.7% (13/66) in non-recurrent cases and 18.8% (9/48) in recur-rent cases, and there was no signiifcant difference between two groups (P=0.899). The incidence of CM was 17.6% (9/51) in cas-es with primary tumor in the fourth ventricle, 7.1% (1/14) in cases with primary tumor in the cerebellar vermis, 21.4% (3/14) in cases with primary tumor in both fourth ventricle and cerebellar vermis, 45.5% (5/11) in cases with primary tumor in fourth ven-tricle and other parts of the brain, and 50.0% (4/8) in cases with primary tumor in cerebellar vermis and other parts of the brain. No CM incidence was observed in cases with primary tumor in central nerve system except for the fourth ventricle and cerebellar vermis. The incidence of CM between the cases with fourth ventricle/cerebellar vermis involvement and those without fourth ventricle/ cerebellar vermis involvement had signiifcant difference (P=0.039). ConclusionsThere is no relationship between CM and relapsed MB. Children with MB whose primary tumor is located in the fourth ventricle and/or the cerebellar vermis is susceptible to CM.
9.SIMPP analysis on class attendance of students
Chunni ZHANG ; Zhiyu REN ; Ou TAO ; Lu AI ; Yun WANG
Chinese Journal of Medical Education Research 2015;(7):676-680
In recent years, lower and lower class attendance has plagued the quality of uni-versity teaching. To solve this problem, this study conducted a questionnaire survey in accordance with the concepts of the Education Reform microscopic systems engineering and the method of SIMPP. The results showed that factors affecting student classroom attendance included two aspects: the sub-jective and objective factors. Indicators related to the subjective factors were: the personal attitude when faced with failure exams, the personal learning interest and personal grasp of the main source of knowledge. Indicators related to the objective factors were: school and teachers. Also, this study gave some suggestions on how to improve students' classroom attendance to provide data basis and refer-ence for further study on class attendance.
10.SIMPP analysis on self-recognized learning effectiveness of students
Zhiyu REN ; Chunni ZHANG ; Ou TAO ; Lu AI ; Yun WANG
Chinese Journal of Medical Education Research 2015;(7):659-662
College students' self cognition of the learning effectiveness influences their learning behavior greatly. Focusing on college students' self cognition of their learning effectiveness, and then standardizing their learning behavior is one of the important work of educators in colleges. Therefore this paper has designed the questionnaire of the influencing factors of learning effectiveness self cog-nition, used SIMPP analysis method to analyze it, and set up the relation model. The analysis shows that college students' self cognition of learning effectiveness is influenced not only by students' dili-gence level and the recognition degree of specialized subject, but also by the factors such as the attitude when you get the bad results. The result provides data basis and scientific basis for future practice and relevant research for educators in colleges.