1.Experimental Study on the Antiviral Action of Emodin in Combination with Other Chinese Active Medicine Components on Coxsackie Virus B_3 Replication
China Pharmacy 1991;0(03):-
OBJECTIVE:To investigate the antiviral action of emodin in combination with other Chinese active medicine components on Coxsackie virus B3(CVB3) and explore the possible antiviral mechanism.METHODS:Hep-2 cells infected by CVB3 were cultured with different concentration and proportion of the emodin and other Chinese medicine components for 72 hours and their inhibitory effects on CVB3 replication were evaluated with cell survival rates by MTT assay.RESULTS:In the Hep-2 cell system,all the combinations between emodin and other medicine components could inhibit cytopathic effect(CPE) of CVB3-infected cells,increase cells' survival rates and decrease the cytotoxicity.The drug combination which showed the best effect of killing viruses directly was emodin:curcumine:banlangen(2:1:2),and the one showing the highest efficacy in inhibiting the replication of CVB3 in cells was emodin:curcumine:banlangen(2:0:1).CONCLUSION:The toxicity of emodin was reduced and its anti-CVB3 activity was enhanced by its combined use with other Chinese active medicine components.
3.Effect of recombinant human interleukin-1 receptor antagonist on metabotropic glutamate receptor 5 of the hippocampus following global cerebral ischemia reperfusion
Chinese Journal of Tissue Engineering Research 2005;9(40):158-161
BACKGROUND: Interleukin-1 receptor antagonist can relieve damage of neuron and protect nerve. Aminoglutaric acid can induce exitotoxicity through activating some kinds of aminoglutaric acid receptor, at the same time, can protect nerve through some receptors. But the relationship between them was unclear during the process of cerebral ischemia reperfusion.OBJECTIVE: To investigate the effect of neuroprotective actions of interleukin-1 receptor antagonist on hippocampal neurons, and the relationship between interleukin-1 receptor antagonist and metabotropic glutamate receptor 5 within the process of cerebral ischemic reperfusion injury.DESIGN: Completed randomized controlled study.SETTING: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences; School of Medicine & Life, Jianghan University.MATERIALS: The experiment was performed at State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science from May 2004 to January 2005. Totally 32 well-being pure breed male Wistar rats were selected.METHODS: Totally 32 rats were divided into four groups by method of the simple random sampling: normal group (n=8) received no surgical treatment, sham operated group (n=8) subjected to only dorsal and ventral neck midline incisions and gently dissection of the bilateral common carotid arteries free of surrounding nerve fibers without occlusion of the both vertebral arteries and common carotid arteries, saline group (n=8) suffered from the permanently occlusion of the both vertebral arteries by electrocauterization and transient (20 minutes) occlusion of bilateral common carotid arteries respectively, and received the treatment of a 2 μL normal saline injection into right lateral ventricle at the rate of 0.4 μL/minute following a needle withdrawal within 5 minutes, and experiment group (n=8) offered the same procedure of the saline group but for that the equivalent amount of rhIL-1ra took the place of normal saline into the lateral ventricle. Hematein-eosin staining was applied to observe pathological changes and immunohistochemistry (ABC) was used to survey the IR of mGluR5 varieties of the hippocampal neurons.MAIN OUTCOME MEASURES: ① Basic pathological changes of hip pocampus and cerebral cortex; ② mGluR5 immunoreactivity (IR) of hippocampus, the sensitive area to cerebral ischemia.RESULTS: Two rats were excluded from the experiment on account of their convulsion during reperfusion (one of the experiment group, another of the saline group), data of 30 rats was entered final analysis. ①Basic pathological changes of hippocampus and cerebral cortex: The Hemateineosin (H.E) staining showed that there is little pathological discrepancy between the normal group and the sham operated group, apparent neuronal degeneration such as peripheral edema around neurons, pyknosis, karyorrhexis and so onin the hippocampus and cortex of the rats of the saline group compared with those of the previous groups, and also the pronounced lower degree of neuronal degenerationin the rats of the experiment group.② mGluR5 immunoreactivity (IR) of hippocampus, the sensitive area to cerebral ischemia (absorbency): The immunohistochemistry presented that the mGluR5 immunoreactivity (IR) of CA1, CA3 areas of the normal group and sham group rats was strong positive (CA1: 0.54±0.12, 0.54±0.05; CA3:0.57±0.02, 0.58±0.08;P > 0.05) Compared with of the normal group and sham group, the mGluR5 IR of the saline and the experiment groups reduced apparently (CA1: 0.30±0.03, 0.40±0.04; CA3: 0.30±0.04, 0.42±0.06;P < 0.01), but the mGluR5 IR of the experiment group was quite stronger than that of the saline one (P < 0.05).CONCLUSION: IL-1ra, one member of the Interleukin-1 family (system)of the cytokines, and mGluR5, one subtype of the metabotropic glutamate receptors were both involved in the pathophysiological process of the global cerebral ischemia reperfusion injury of the rat. Also, as the antagonist of the proimflammatory medium intetleukin-1 receptor, IL-1ra may show neuroprotection by affecting the mGluR5 expression of the CA1 and CA3 areas of the rat hippocampus within the process of cerebral ischemic reperfusion injury. Furthermore, here it demonstrated that besides IL-1ra, other factors might regulate the expression of mGluR5.
4. Spindle cell lesions in breast diseases
Academic Journal of Second Military Medical University 2011;32(11):1249-1254
Breast tumors are the most common tumors of epithelial origin. Some tumors or tumor-like lesions of the breast may display a morphology similar to mesenchymal tumors predominated by spindle cells. However, such morphology is apt to be confused with others due to lack of the characteristic histopathology. This paper reviews some spindle cell lions in the breast, in an attempt to provide theoretical evidences for the differentiation diagnosis of breast tumors and tumor-like lions.
5.Clinical significance of dynamic monitoring blood glucose in patients with severe traumatic brain injury
Jingfen XIANG ; Xiang YANG ; Jianfeng GONG ; Weijian LEI
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care 2014;(1):31-34
Objective To investigate the clinicial significance of continuous glucose monitoring(CGM)of patients with severe traumatic brain injury(sTBI). Methods By glucose monitoring method,80 patients with sTBI〔Glasgow coma score(GCS)3-8〕in Department of Critical Care Medicine of Qingyuan People's Hospital in Guangdong Province from January 2012 to December 2012 were divided into two groups:41 patients in CGM group and 39 in regular glucose monitoring(RGM)group. The continuous glucose monitoring system(CGMS)was applied to monitor glucose level in the CGM group,and the finger blood was taken by portable blood glucose meter in the RGM group. The two groups were treated with insulin on the basis of glucose level,respectively. The relationships between the condition of glycemic excursions and the acute physiology and chronic health evaluationⅡ(APACHEⅡ)score or prognosis and between the incidence of hypoglycemia and prognosis were seen in the two groups. Results The close linear correlations between APACHEⅡ score and glycemic excursion in two groups,i.e. mean amplitude of glycemic excursions(MAGE)and coefficient of variation of glucose(GluCV),were documented(both P<0.05). The MAGE of the especially severe patients(GCS 3-5)was obviously higher than that of severe ones(GCS 6-8),and with the increase of APACHEⅡ score,the MAGE of patients was gradually elevated,the difference being statistically significant(both P<0.05). The incidence of hypoglycemia(7.32%vs. 23.08%)and fatality rate of 30 days(12.20%vs. 30.77%)in CGM group were lower than those of RGM group(both P<0.05). The MAGE and fatality rate of 30 days were positively correlated in CGM group(r=0.597,P=0.007),and the GLuCV and fatality rate of 30 days were positively correlated in RGM group(r=0.622,P=0.019). Conclusion CGM is beneficial to timely observe condition of glycemic excursions in sTBI patients and avoid occurrence of hypoglycemia or hyperglycemia,guiding the treatment of insulin and improving patients' prognosis.
6.Experimental studies on analgesic and anti-inflammation effects of aspirin -niacinamide-zinc complex (WUY)
Qisong PU ; Jun LEI ; Xiang ZHANG
Chinese Journal of Clinical Pharmacology and Therapeutics 2004;0(12):-
AIM: To study the analgesia and anti-inflammation effects o f aspirin-niacinamide-zinc complex (WUY). METHODS: In this study , the mice ear swelling, vascular permeability increasing and rats’ paw edema w ere adopted to evaluate the anti-inflammable effects of WUY. And the analgesic effects of WUY were tested by writhing reaction and hot-plate method. R ESULTS: In high and low dose groups of WUY, the degrees of ear swelling were 3.3 and 2.8 mg, the Evans blue induced effusion were 3.1 and 1.2 mg?L -1, and the paw edema volume (1-4 h) were 0.21- 0.13 and 0.23- 0.08 ml, respectively. WUY ( 0.3 and 0.45 mmol?kg -1) prolonged incubation period of hot-plate reaction and showed marked i nhibition effects on writhing induced by acetic acid in mice. CONCLUSION : The analgesic and anti-inflammable effects of WUY are stronger than t hat of ASP.
7.The value of contact heat evoked potentials for the early diagnosis of diabetic peripheral polyneuropathy
Lei XIANG ; Bingdi XIE ; Hui ZHAI
Chinese Journal of Physical Medicine and Rehabilitation 2009;31(2):100-103
Objective To study the value of contact heat evoked potentials (CHEPs) for the early diagnosis of diabetic peripheral polyneuropathy. Methods Seventy-five diabetic patients were examined by conventional nerve conduction velocity studies and then divided into 2 groups: diabetics with normal nerve conduction and diabetics with abnormal nerve conduction. Thirty-three normal subjects were used as controls. Toronto Clinical Neuropathy Sco-ring System was used to evaluate the patients. CHEPs were recorded using different stimulation intensities at different temperatures. Results The peak latencies of 45℃ , 50℃, 53℃ in diabetics with normal nerve conduction group were longer than those in normal control group, with a significant difference between the 2 groups(P<0.05). The peak latencies of diabetics were positively related to Toronto scores. Conclusion CHEPs could detect the impair-ment of diabetic peripheral nerve and reveal the impairment earlier than conventional nerve conduction velocity exami-nation, The prolongation of peak latency in diabetics group was significantly and positively related to clinical condi-tion.
8.Surgical treatment for tumor involved inferior vena cava at the upper segment of kidney
Xiang FENG ; Chao SONG ; Lei ZHANG
Chinese Journal of Digestive Surgery 2015;14(9):733-736
Objective To investigate surgical treatment for tumor involved inferior vena cava at the upper segment of kidney.Methods The clinical data of 35 patients with tumor involved inferior vena cava at the upper segment of kidney who were admitted to Changhai Hospital affiliated to the Second Military Medical University from January 2007 to May 2015 were retrospectively analyzed.All the patients received preoperative imaging examinations to insure the site and range of inferior vena cava involvement at the upper segment of kidney.Renal cell carcinomas with inferior vena cava involvement were found in 19 cases,leiomyosarcomas of inferior vena cava in 5 cases,leiomyomatosis involving inferior vena cava in 3 cases,adrenocortical carcinoma involving inferior vena cava in 3 cases,liver cancer involving inferior vena cava in 2 cases,right adrenal pheochromocytomas in 2 cases,retroperitoneal fibrosarcoma involving inferior vena cava in 1 case.According to tumor involvement types,the different surgical approaches,planes and method of inferior vena cava exclusion,reconstruction method and prevention of tumor embolus detachment were selected.Patients were followed up by outpatient examination and telephone interview till May 2015.Results Among 19 patients with renal cell carcinomas with inferior vena cava involvement,10 patients were placed inferior vena cava filters through internal jugular vein before surgery,10 patients underwent total hepatic vascular exclusion and 9 patients underwent intrahepatic inferior vena cava exclusion.All the 19 patients received tumor resection and inferior vena cava embolectomy.Of the 5 patients with leiomyosar-comas of inferior vena cava,3 patients underwent total hepatic vascular exclusion and 2 patients underwent intrahepatic inferior vena cava exclusion.The diseased segments of 5 patients were resected,including 4 patients of artificial vascular graft and 1 patient complicated with resection of right kidney receiving simple ligation of inferior vena cava and left renal vein at proximal and distal tumors.Of the 3 patients with leiomyomatosis involving inferior vena cava,2 patients received total hepatic vascular exclusion and 1 was treated surgically under cardiopulmonary bypass.All the 3 patients underwent inferior vena cava embolectomy and hysterectomy.Three patients with adrenocortical carcinoma involving inferior vena cava and 2 patients with liver cancer involving inferior vena cava underwent total hepatic vascular exclusion.Among the 5 patients,4 had direct suture after tumor removal combined with partial inferior vena cava resection,and 1 had patch repair after partial inferior vena cava resection.Two patients with right adrenal pheochromocytomas were exposed proximal and distal lifting devices of inferior vena cava without clamp,and the tumors were peeled off completely.Intraoperative death happened in the patient with retroperitoneal fibrosarcoma involving inferior vena cava who was prepared to undergo intrahepatic inferior vena cava exclusion but encountered intraoperative pulmonary embolism due to tumor thrombus shedding.Thirty-four patients of 35 patients underwent operation successfully without serious perioperative complications and a patient died in the perioperative period.The mean operation time,volume of intraoperative blood loss and duration of postoperative hospital stay were 2.8 hours (range,1.5-5.0 hours),2 000 mL (range,400-5 000 mL) and 9.2 days (range,6.0-16.0 days).Thirty-four patients were followed up for a median time of 12 months (range,1-60 months).During the follow-up period,a patient with leiomyosarcomas of inferior vena cava and 2 patients with adrenocortical carcinoma involving inferior vena cava died of tumor recurrence,a patient with liver cancer had tumor recurrence,other patients were tumor-free survival.Conclusions Inferior vena cava at the upper segment of kidney is not contraindication for tumor resection.The appropriate way to expose,clamp and reconstruct are selected to safely remove the tumor based on extension and method of tumor involving inferior vena cava.
9.The main fields and trends of anti-inflammation and immunopharmacology study in china
Ming XIANG ; Lei WU ; Ping LIU
Chinese Pharmacological Bulletin 1987;0(02):-
The main fields and trends of research on anti-inflammation and immunopharmacology were reviewed as: signal transduction pathways as target for therapy, cytokine regulating network, new types of immunotherapy, new mechanisms of anti-inflammation drugs, the mechanisms and inductive methods of immune tolerance and the development of natural immune system.
10.An experimental study on changes of estrogen receptor in myocardium after acute myocardial infarction in rats
Lei XIANG ; Bin LUO ; Xinyao WU
Chinese Journal of Forensic Medicine 1986;0(02):-
Objective To investigate temporal expression of estrogen receptor (ER) in myocardium at non-infarct zone after acute myocardial infarction (AMI) in rats. Methods 120 healthy, male SD rats were randomly divided into three groups: control group, left anterior descending coronary artery (LAD) occlusion group and sham operation group with 8 rats in each group. The murine AMI-model was established by LAD ligation after anesthetization, and the rats in both LAD occlusion group and sham operation group were sacrificed at 2h, 4h, 8h, 12h, 1d, 2d, 4d, and 9d after occlusion. Myocardial samples were collected. H.E and ER immunohistochemical staining were performed. The results were quantitatively evaluated by image analysis system. The data were statistically analyzed with SPSS for Windows. Results ER expression in non-ischemic cardiomyocytes after LAD occlusion became more prominent with extension of LAD occlusion period. There was no significant difference within 12h after AMI, while ER expression was enhanced significantly 24h after ischemia. The enhancement were more evident from 4 to 9 days. Conclusion The results suggested that protective role may be initiated in response to acute ischemia in cardiac cells at non-infarct zone by increased ER expression after LAD occlusion in rats.