1.Protective and therapeutic effects of Sagittara Sagittifolia L.Xiao-Zhi Pills on nonalcoholic steatohepatitis in rats
Yanhua MA ; Shaojun YANG ; Jianxiong ZHAO
Journal of Xi'an Jiaotong University(Medical Sciences) 2003;0(06):-
Objective To observe the preventive and therapeutic effects of Sagittara Sagittifolia L.Xiao-Zhi Pills on nonalcoholic steatohepatitis(NASH) in rats.Methods Rat NASH models were established and the rats were divided randomly into five groups: the normal group,model group,high-dosage group and low-dosage groups of the treatment,and Dongbao Gantai positive drug group.Histopathological changes of the liver were observed.The levels of MDA,superoxide dismutase(SOD),and NO(nitric oxide) in the liver homogenate were determined.Expressions of cyclooxygenase-2(cox-2) and inducible nitric oxide synthase(iNOS) in the liver were determined with immunohistochemical technique.Results In model group,extensive adipose degeneration and inflammatory cell infiltration were found in the liver.Compared with those in normal group,SOD activities in model group were obviously decreased(P
2.Protective and therapeutic effects of Sagittara Sagittifolia L. Xiao-Zhi Pills on nonalcoholic steatohepatitis in rats
Yanhua MA ; Shaojun YANG ; Jianxiong ZHAO
Journal of Xi'an Jiaotong University(Medical Sciences) 2009;30(6):754-758
Objective To observe the preventive and therapeutic effects of Sagittara Sagittifolia L. Xiao-Zhi Pills on nonalcoholic steatohepatitis (NASH) in rats. Methods Rat NASH models were established and the rats were divided randomly into five groups: the normal group, model group, high-dosage group and low-dosage groups of the treatment, and Dongbao Gantai positive drug group. Histopathological changes of the liver were observed. The levels of MDA, superoxide dismutase (SOD), and NO (nitric oxide) in the liver homogenate were determined. Expressions of cyclooxygenase-2 (cox-2) and inducible nitric oxide synthase (iNOS) in the liver were determined with immunohistochemical technique. Results In model group, extensive adipose degeneration and inflammatory cell infiltration were found in the liver. Compared with those in normal group, SOD activities in model group were obviously decreased (P<0.01), the contents of MDA and NO were obviously increased (P<0.01), and the expressions of cox-2 and iNOS proteins were obviously increased (P<0.01). Compared with those in model group, the activities of SOD in treatment groups were obviously increased (P<0.01), the contents of MDA and NO were obviously decreased (P<0.01), and the expressions of COX-2 and iNOS proteins were obviously decreased (P<0.01). The effect of high-dosage group was more obvious than that of Dongbao Gantai group (P<0.05). Conclusion Sagittara Sagittifolia L. Xiao-Zhi Pills can effectively prevent and treat nonalcoholic steatohepatitis in rats, and its mechanism may be associated with ameliorating hepatocellular steatosis, removing the free radicals and enhancing the anti-oxidation and anti-inflammation capability.
3.Establishing of rat heart failure model in myocardial infarction:the changes of cytokines
Yanhua LI ; Shiwen WANG ; Dong ZHAO
Clinical Medicine of China 2008;24(5):404-406
Objective To establish rat heart failure(HF)model following myocardial infarction(MI)and then detect the possible cytokines expression levels at different HF groups,so to explore the development of cytokines levels during the progression of heart failure.Methods The model was established by ligature of the left descending coronary artery.The rats were assessed by echocardiography and cardiac catheterization before and after 4 and 16 weeks following coronary ligature.Serum levels of TNF-α and IL-6 were determined.Results ①Serum cytokines could not be detectable in sham group using ELISA Methods,while in operated group,the concentration of TNF-α and IL-6 were significantly higher,especially IL-6.②The diagnosis coincidence between echocardiography and hemodynamics was high.Echocardiography can be used as an invasive measure to assess cardiac function in rat heart failure models.Conclusion ①Cytokines content is higher in compensated compared with the other two groups,especially to the IL-6 expression.②Cardiac ultrasound can be used as a useful method in monitoring postinfarction heart failure rat model,especially as an invasive measure.It can provide us successive data of the model.
4.Research for axon damage of tau protein in experimental autoimmune encephalo-myelitis
Yanhua ZHAO ; Doudou WEI ; Meini ZHANG
Chinese Journal of Immunology 2015;(5):620-624
Objective:To observe dynamic change of phosphorylated tau protein and non phosphorylated tau protein in axon and explore whether GSK3 in serum were related with phosphorylated tau protein in brain of EAE mice.Methods: Mice were randomly divided into six groups:EAE group of acute stage,EAE group of paralytic stage,EAE group of remission stage,control group of acute stage,control group of paralytic stage,control group of remission stage,each group had twelve mice.EAE model were constructed by MOG35-55 peptides in EAE group, the saline was used in control group.The nerve function scores and incidence were observed and compared.We observed degree of brain inflammation by HE staining and measured axons which contained two kinds of tau protein by immunohistochemistry.GSK3 in serum was tested to find correlation with phosphorylated tau protein in brain by ELISA method.Results:Nerve function scores in EAE group were higher than control group.The degree of inflammation damage was more serious in EAE group than control group,gradually enhancing with time.Phosphorylated tau protein in brain gradually increased before mice paralyzing(P<0.01),but it decreased when symptom relieved(P<0.01).GSK3 in serum were correlated with phosphorylated tau protein in brain(r=0.9326,P<0.01),linear regression equation:Y=2.950+0.418X.Conclusion:Phosphorylated tau protein in brain are correlated with axon damage and GSK3 in serum could indirectly reflect axon damage in brain.
5.Functions and mechanisms of long non-coding RNAs in lung cancer
Yanhua ZHAO ; Xinli ZHANG ; Wenling ZHANG
Chinese Journal of Clinical Oncology 2013;(23):1473-1476
Long non-coding RNAs (lncRNAs) are non-coding RNAs that have transcript lengths exceeding 200 bp and do not have the capacity for protein coding because of having no open reading frame. In the human genome, lncRNAs play important regulato-ry roles in the process of epigenetic, transcription and post-transcription, so they have become the focus of research followed by mi-croRNAs. The abnormal expression of lncRNAs in cancer usually represents different functions, such as the function of oncogenes or tumor suppressor genes, which promote or inhibit tumor growth. Lung cancer is a common malignant tumor with a five-year survival rate of 17%. Previous literature shows that MALAT1, H19, lincRNA p21, UCA1, and BC200 are closely related to the development of lung cancer. They could promote cancer growth, invasion and metastasis, apoptosis and induce drug resistance, and so on. This review aims to provide assistance in the diagnosis, treatment, and prognosis of lung cancer by clarifying the functions and mechanisms of ln-cRNAs.
6.Clinical characteristics and chemotherapy efficacy in patients with newly diagnosed multiple myeloma:observation of 176 cases
Shunji GAO ; Yanhua SUN ; Hongguo ZHAO
Journal of Leukemia & Lymphoma 2016;25(9):539-542
Objective To investigate the clinical characteristics and treatment efficacy in newly diagnosed multiple myeloma (MM). Methods The clinical data and treatment methods of 176 patients with newly diagnosed MM were retrospectively analyzed. Results The most common chief complaint in the patients with MM was bone pain. 26.1 % (46/176) patients once experienced misdiagnosis. The overall response rate (ORR) was 65.9 % (116/176), the ORR of bortezomib group (81.0 %, 34/42) was significantly higher than that of M2 regimen group (61.8 %, 34/55) and VAD regimen group (60.8 %, 48/79) (P<0.05). Between normal renal function subgroup and renal insufficiency subgroup in bortezomib group, the efficacy was no significant difference (P>0.05). The most common adverse reactions included hematologic toxicity, infection and peripheral neurotoxicity. Multiple organ failure was the main cause of death (47.1 %, 16/34). Conclusions The clinical manifestations of MM are complex and diverse, which is easy to be misdiagnosed. Molecular genetic abnormalities are closely related to prognosis. Proteasome inhibitor bortezomib can improve the curative effect and not be affected by renal function. To prolong the survival time of the patients needs to prevent and control the infection and renal insufficiency actively.
7.Epigallocatechin gallate inhibited proliferation and induced apoptosis of nasopharyngeal carcinoma cells by inhibiting expression of SIRT1
Li ZHAO ; Yuan QIN ; Yanhua HE ; Jingshen HOU ; Yi CAI
The Journal of Practical Medicine 2014;(10):1544-1547
Objective To examine the effect of epigallocatechin gallate (EGCG) at different concentration (0,10,25, 50 and 100μmol/L ) on proliferation rate and apoptosis of nasopharyngeal carcinoma cell line C666-1 in vitro, and elucidate the role of silent information regulator 1 (SIRT1). Methods The proliferation rate in vitro of C666-1 cells stimulated by EGCG at increasing concentrations (0,10,25,50,and 100 μmol/L)for 24 h or at concentration of 50μmol/L for 0,6,12 h and 24 h were detected by cell counting kit-8 (CCK-8) assays. Cell were treated with EGCG at concentration of 0,25, 50 and 100 μmol/L for 24 h, cell apoptosis was anylysed by TUNEL assay and expression levels of SIRT1 protein was detected by western blotting. Results EGCG suppressed cell proliferation of C666-1 cell line in a concentration-dependent manner at concentration of 0 ,10,25,50,and 100μmol/L, and in a time-dependently when treated with 50 μmol/L for 12 to 24 h(P<0.05). After treated for 24 h with different concentration of EGCG at 0、25、50、100 μmol/L, cell apoptosis increased at concentration of 50 to 100μmol/L and expression of SIRT1 decreased in a concentration-dependently (P<0.05). Conclusion EGCG induced cell apoptosis of C666-1 cells by down-regulating SIRT1 expression.
8.Automatic Oral Drug Dispensing System in Hospital Pharmacy:Application and Experience
Hua NING ; Jianmin YAN ; Jinhuan ZHAO ; Qinglan YAN ; Yanhua ZHANG
China Pharmacy 2005;0(13):-
OBJECTIVE: To provide references for the application of automatic oral drug dispensing system in hospital pharmacy. METHODS: The chief structure of automatic oral drug dispensing system in our hospital (TR-200FDS system) was introduced; the main working process and employment of this system were briefly introduced,and its advantages and disadvantages were discussed. RESULTS: The application of automatic oral drug dispensing system is characterized by convenience,cleanness,quickness and accuracy,but the relative costs are on the high side. CONCLUSION: The application of automatic oral drug dispensing system in hospital pharmacy can enhance hospital pharmaceutical care level,and it may represent the trend of the development in hospital pharmacy.
9.Technical characters of model establishment of penetrating corneal transplantation in rats
Huimin XU ; Yanhua HU ; Wei ZHAO ; Qiming WANG
Chinese Journal of Tissue Engineering Research 2005;9(26):249-251
BACKGROUND: The expression of main histocompatibility antigen in cornea of rats is similar to that of human. It is verified in early experiments that penetrating corneal transplantation in rats is more repetition and reliability, and the operation difficulty is lower than that in mice.OBJECTIVE: To establish rat model of penetrating corneal transplantation and analyze the reasons of complications during model preparation and the corresponding managements and probe into the method for improving the success rate of rat model of corneal transplantation.DESIGN: Randomized controlled experiment was designed.SETTING: Department of Ophthalmology , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology.MATERIALS: The experiment was performed in Department of Ophthalmology in Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology from March to May 2004. Seventysix outbred female Wistar rats of two months old were employed and randomized into experimental group and control group with 38 rats in each,without eye disease, of clean grade, body mass varied from 180 to 200 g and their right eyes were taken as acceptors. Thirty-eight SD female rats were employed and their both eyes were taken as donors. All of the animals were provided from Experimental Animal Center of Tongji Medical College of Huazhong University of Science and Technology.METHODS: Central penetrating corneal transplantation in situ was adopted and the model was established on the right eye of Wistar rat. Ten minutes before operation, tropicamide eye drops was administrated twice to amplify adequately the pupil of the right eye up to 4.0 mm. According to body mass, general anesthesia was done with abdominal injection of 3.0 mL/kg chloral hydrateand dicaine eye drops was applied twice 5 minutes before the operation with 0.1 volume fraction. Routine sterilization was done on the head of rat, the eyes kept in horizontal level and respiration kept smooth. The clip in dental-ophthalmology department was used to fix the posterior of the operated eye and make it to be semiluxated. The ring driller 3.5 mm in diameter was used to collect corneas of both eyes in SD rat as the implant tissue and place in culture dish with endothelial part upward, covered with methyl cellulose of 20 g/L mass weight concentration. The ring driller, 3.0 mm in diameter was used to collect the cornea of the right eye in Wistar rat to be the graft foreman, and the implant tissue was sutured into the graft foreman on the right eye of Wistar rat with 10-0nylon thread intermittently. Eight stitches were done in corneal transplantation in the experimental group and 6 stitches in the control group. After operation, ofloxacin eye drops was administrated and the operated eye was covered with plaster. Corneal rejection was observed and the evaluation was done in 3 items, named, turbidity, edema and neogenetic vessel. The total score of 3 items was taken as the rejection index on the day. Rejection was determined if the rejection index on the day ≥5 or corneal turbidity reached the 3nd grade. x2 and Fisher definite probability methods were used for statistical examination.plant tissue and corneal rejection.RESULTS: Of 76 Wistar rat acceptors, 5 rats were dropped out, among which, 1 rat was died accidentally after operation in the experimental group, 2 rats were died accidentally after operation in the control and 2 rats were injured cornea on the operated eyes due to fighting. But by supcomplications after corneal transplantation: In the experimental group, the number with anterior adhesion of sclera, non-round pupil; limited wound healing and non-formation of anterior chamber was lower than that in the implant tissue and corneal rejection: the survival time of corneal implant tissue was similar basically in both experimental group and the control [(8.9±2.3), (8.6±2.3) days, P > 0.05]. Rejection presented in both groups in 16 days after corneal transplantation and the incidence of rejection was 100%.CONCLUSION: With stitches maintained and without intervention, the acute rejection is similar in rat corneal transplantation and human corneal transplantation. It is explained in the experiment that 8 stitches in corneal transplantation in which the rat implant tissue of 3.5 mm matches graft foreman of 3.0 mm can reduce the complications of rat corneal transplantation and becomes a satisfactory animal model of corneal transplantation.Skillful microscopic operation techniques, satisfactory operation instruments and adequate amplilfied pupil can reduce to the most extent the postoperation complications in rats.
10.99mTc-MDP Bone Scintigraphy for Study on Repair of Femoral Eefect Caused by Microwave-induced Hyperthermia in Dogs
Tingbao ZHAO ; Qingyu FAN ; Dianzhong ZHANG ; Xiuchun QIU ; Yanhua WEN
Chinese Journal of Tissue Engineering Research 2001;5(12):151-153
Objective To investigated the biological procedure of allograft decalcified bone matrix(DBM)and bone cement(BC)combined with bovine bone morphogenetic protein (bBMP)used for the repair of femoral defect caused by microwave- induced hyperthermia in dogsby 99mTc- MDP bone scintigraphy.Method The canine femoral defect(length 25mm,width 10mm)was caused by microwave- induced hyperthermia(50℃ ,20minutes)and the composite material was implanted .Then the canine femurs were examined by 99mTc- MDP bone scintigraphy respectively at different postoperative time and the results were compared with that of X- ray photography and histological observation.Bone cement was implanted in the other femur as a contrast.Results It could be observed at the first and the second month that the radioisotope was gathered in the place where the composite material was implanted and the amount of radioisotope gathered in was the most abundant at the third month and it was lasted to the fourth month. That of the sixth month was decreased to that of the second month.The radiation count of the first, the second, the third the fourth and the sixth month were 93.9± 12.7, 110.7± 16.4,222.1± 24.0,201.3± 26.9 and 111.6± 20.7 respectively,and the count of the third month and the fourth month were more than that of the first, the second and the sixth month(P<0.01).Conclusion The composite material could be remodeled easily and the new bone could be formed by the induction of bBMP. So it could be merged with the normal bone.While the 99mTc- MDP bone scintigraphy is the object and reliable index to determine the biological procedure of the composite material in dogs.