1.The relationship between endocrine-metabolism system and the liver diseases
Chinese Journal of Endocrinology and Metabolism 2010;26(11):1009-1012
More and more studies suggest that endocrine-metabolic diseases and liver diseases influence each other. Endocrine-metabolic diseases may lead to abnormal liver function, and liver diseases are found also to cause disturbance of endocrine-metabolic system.
2.Blocking the chemokine receptor pathway attenuates acute rejection after islet transplantation
Lei YANG ; Yongfeng LIU ; Guohua ZHAO
Chinese Journal of Organ Transplantation 2005;0(07):-
Objective To investigate the effects of chemokine antagonist,Met-RANTES,on the acute rejection of islet allograft in the rat model.Methods According to the different treatments,rats were divided into 2 group: control group,allogeneic islet transplant untreated;experiment group,allogeneic islet transplant treated with Met-RANTES(200 ?g/day, i.p) for 7 days post-operation.The survival time of rat of islet transplant and blood sugar were recorded,and the pathological changes of islet allograft were observed.Scintillation counter was used to count the count per min(cpm) of monocytes.Flow cytometry was used to detect the ratio of CD4~+/CD8~+ phenotypes and CCR5 expression of peripheral blood lymphocytes.Results The mean survival time of islet allograft in experiment group was(23.0)?(10.5) days,obviously longer than in the control group((3.8)?(4.5) days,P
3.Inhibitory effects of argatroban on instant blood-mediated inflammatory reaction after islet transplantation in vitro
Bengang WANG ; Ying CHENG ; Rui SHI ; Nin ZHAO ; Yongfeng LIU
Chinese Journal of Organ Transplantation 2009;30(5):300-302
Objective To investigate the inhibitory effects of Argatroban on the instant bloodmediated inflammatory reaction(IBMIR)after islet transplantation.Methods Rat islets were isolated and purified rat islets,and were divided into blank control group,control group and experimental group.In the control group,the blood and the islets were directly mixed,and in the experimental group the Argatroban was added to the mixture based on the control group.while the blank control group was added with blood alone without the islets.Each group was reacted at 37℃for 60min,and then the content was filtered through trap valve of 70 μm.The residual thrombus and tissues were filtered by the trap valve in both the experimental and control groups,detected by the thinprep cytologic test(TCT),and the filtrate received blood routine test,and the function of islet was determined using insulin releasing test.Results The number of blood platelets,white blood cells,mononuclear cells,and lymphocytes percentage in the experimental group were significantly higher than in the control group after 60 min(P<0.05).Under the environment of the high and low concentrations of glucose,the insulin release in experimental group was significantly increased as compared with the control group,and the insulin release index of former was 2.25±0.18,significantly higher than that of the latter 3.36±0.18(P<0.05).The residual thrombus and tissues had few islet cells in the control group,the structure was damaged seriously,the capsule was not intact,and there were a large mumber of micro-thrombosis around the islets formed by red blood cells.But there were a large number of islet cells in the experimental group.the structure was intact in a mass,and no obvious micro-thrombosis around the islets was found.Conclusion Argatroban can effectively inhibit IBMIR in vitro,and alleviate the damage to the islet cells.
4.Study on coenzyme Q_(10) protecting from oxygen-derived free radical in orthotopic liver transplanta- tion in rats
Hong CUI ; Yongfeng LIU ; Rixing ZHAO ; Jian LIANG ; Sanguang HE ;
Chinese Journal of Organ Transplantation 1996;0(02):-
In this experiment we used the model of the orthotopic liver transplantation with three cuff technique in rats.In treated group,coenzyme Q_(10) was injected intravenously into donor rats before donor hepatectomy.At the 4th hour after transplant,the activity of superoxide dismu- tase (SOD) and the level of lipid peroxidation (LPO) both in the blood and in the liver tissue were measured,meanwhile,the specimens of the grafted liver tissue were sent for microscope and elec- tromicroscope studies.The results showed:(1) The activity of SOD in treated group were higher than that in control group (P
7.Application of resonance charging circuit to electro-hydraulic impulse apparatus for waste water treatment
Zhenfang LIAO ; Jianxin ZHAO ; Deshu CHEN ; Yongfeng KANG
Chinese Medical Equipment Journal 2004;0(07):-
The application of resonance charging circuit to electro-hydraulic impulse apparatus for treating wastewater is introduced in this paper.The circuit permits the graduating increase of current without influence from time.The unique change of voltage on capacitor is favorable for the recovery of electric strength of electro-hydraulic impulse apparatus.The theory and design method of resonance charging circuit are provided.
8.Clinical significance of cyclooxygenase-2 and BCRP expressions in non-Hodgkin lymphoma
Yongfeng ZHAO ; Liping SU ; Meijing ZHENG ; Jingjing DUAN
Journal of Leukemia & Lymphoma 2010;19(8):483-485
Objective To investigate the correlation and significance of cyclooxygenase-2 (COX-2)and the breast cancer resistance protein (BCRP) expressions in non-Hodgkin lymphoma(NHL). Methods Ten patients with reactive lymph nodes (RLN) were considered as a control group. Compared with β-actin as internal control, the BCRP mRNA expressions of 61 NHL samples and 10 lymph tissues in control group were detected by semi-quantitative revere transcription polymerase chain reaction (RT-PCR) assay, while the expressions of COX-2 protein of the above specimens were detected by SP immunohistochemistry. Results The positive rates of COX-2 and BCRP in NHL were 50.8 %(31/61) and 45.8 % (28/61), respectively , and were higher than those in the control group (P <0.05). The expression of COX-2 was statistically positive correlated to that of BCRP (X2 =8.795, r=0.355, P<0.05). The expressions of COX-2 and BCRP were not correlated to clinical and pathological factors, such as age, sex, IPI, LDH, β2-microglobulin level and Ann Arbor stage, however, the expression of BCRP was statistically correlated to chemotherapy efficacy.Conclusion BCRP may be involved in multi-drug resistance (MDR) of NHL, so it may contribute to the assessment of chemotherapy and prediction of NHL. Since there is a strong correlation between COX-2 expression and MDR in NHL, the application of COX-2 inhibitors may enhance sensitivity of chemotherapy.
9.Vasoactive intestinal peptide-secreting-tumor,report of 4 cases
Shaowei SONG ; Rui SHI ; Ning ZHAO ; Yongfeng LIU
Chinese Journal of General Surgery 2008;23(5):340-342
Objective To evaluate the diagnosis and treatment of vipoma based on our experience on 4 cases.Method Clinical manifestations,laboratory examination,imaging features,surgical findings,and pathology of 4 patients with vipoma admitted in our hospital from 1991 were discussed.Results Watery diarrhea and hypokalemia were the main clinical manifestations.Hepatic metastasis OCCurred in two patients.Tumor located in the head of the pancreas in one case.Two tumors were shown in the pancreatic body and one tumor was in the pancreatic tail.Resection of tumor and hepatic metastatic lesions with repeat resection of metastases Was performed in 1 patient.Resection of the pancreatic body and tail was done in one patient.Pancreatoduodenectomy Was performed in one patient.Laparotomy only was done in one patient because of invasion of the superior mesenteric vein and duodenum.Conclusion Typical symptoms play an important role in the diagnosis of vipoma.Hepatic metastasis is common.Surgery is the most effective means for treatment.
10.Comparison of the effects of different fixation methods on open-door side in posterior expansive open-door laminoplasty
Xirong HAO ; Yibo ZHAO ; Xiangdong LU ; Yongfeng WANG ; Xiaofeng ZHAO ; Bin ZHAO
Chinese Journal of Orthopaedics 2017;37(8):449-456
Objective To investigate the clinical outcome and complications of different types of expansive open door laminoplasty in cervical spondylotic myelopathy.Methods From December 2008 to June 2012,221 patients with cervical spondylotic myelopathy treated with expansive open-door laminoplasty were divided into micro-titanium plate fixed group (96 cases),wire hanging fixed group(66 cases),anchor suspension fixed group (59 cases).The clinical outcome was evaluated including JOA score,operation time,bleeding volume,spinal cord pressure (a/M),cervical range of motion (ROM),open door angle,posterior shift distance of spinal cord and postoperative complications.Results All patients were followed up for more than 2 years.There were no significant differences in general condition,operation time,intraoperative blood loss,preoperative and postoperative 2 years JOA score,JOA score improvement rate,spinal cord shift distance,spinal cord compression among three groups;In the incidence of C5 nerve root paralysis,there was no significant difference between the silk suspension fixation group (12.1%) and the anchored suspension group (11.9%).The incidence of C5 nerve root paralysis for microplate fixation group (2.1%) was significantly lower than that of the silk suspension fixation group and anchored suspension fixation group,and the difference was statistically significant.There was no significant difference in the fusion rate between the 3-month and 6-month portal arteries in the group of silk suspension fixation group(65%,82%) and anchor fixation group(61%,82%).The fusion rate of the microtiter plate fixation group(90%,98%) was significantly higher than that of the silk suspension group and the anchorage group at 3 months and 6 months after operation.There were no significant differences in the incidence of recurrence,the total amount of cervical spine loss and the incidence of axial symptoms after 6 months of operation in the suspension group and the anchor suspension group.The incidence of occlusion,the total amount of cervical spine loss and the incidence of axial symptoms were significantly lower in the micro titanium plate fixation group than those in the silk suspension group and the anchorage fixation group,the difference was statistically significant.Conclusion Using micro-titanium plate to fix the side of open door could achieve full spinal cord decompression and access to satisfactory neurological improvement rate.At the same time,compared with the traditional silk or anchor suspension,the use of micro-titanium plate is more conducive to the door axis bone healing,prevent the occurrence of reclosing,significantly reduce the loss of postoperative cervical range of motion,and reduce the incidence of axial symptoms with the satisfaction of the clinical outcome.