Aged ; Calcinosis ; complications ; Heart Aneurysm ; complications ; Heart Ventricles ; Humans ; Male ; Thrombosis ; complications

OBJECTIVE:To investigate the drug-induced renal injury of inpatients in our hospital and provide information for rational use of drugs.METHODS:A retrospective analysis was performed in 102 cases whose blood Cr level was abnormal in June,August,and October in 2007.RESULTS:Of the 102 cases,20 patients(19.6%)suffered from drug-induced renal injury induced by 22 suspected drugs including dehydrants,antibiotics and ACEI et al.CONCLUSION:To avoid drug-induced renal function injury,medication should be carried out by strictly following indications and the dosage and administration stated in the drug package insert.

BACKGROUND: Deproteinized bone has three diamensions frame profitting bone cells to adhere to, new capillaries and interstitial cells to enter, osteoblasts to differentiate and extracellular matrix to synthesize. Calcium phosphate cement (CPC) is a new in-ceramic bone cement that can degradate, which has plasticity, no heat production, invariably mechanics intension and porosity.OBJECTIVE: To explore the ability of CPC attaching with human vascular endothelial growth factor (rhVEGF) and recombinant human bone morphogenetic protein-2 (rhBMP-2) in promoting deproteinized osteoarticular allograft to repair osteoarticular defect.DESIGN: Randomly control observation.SETTING: Department of Orthopaedics, the First Affiliated Hospital, Chongqing Medical University.MATERIALS: A total of 42 adult hybridization dogs of both genders and weighing (10±0.5) kg were provided by Animal Center of Chongqing Medical University. RhVEGF was provided by Beijing Boaosen Biotechnology Co., Ltd.; rhBMP-2 by Guangzhou Dahui Biotechnology Co., Ltd.; CPC by Shanghai Ruibang Biotechnology Co., Ltd.METHODS: The experiment was carried out in the Laboratory of Orthopaedics (Municipal Laboratory), Clinical College,Chongqing Medical University from March to September 2006. A total of 36 adult dogs were randomly divided into three groups with 12 in each group, including group A: CPC/rhVEGF/rhBMP-2/deproteinized femoral inferior extremity (DPB)osteoarticular allograft; group B: rhVEGF/rhBMP-2/DPB osteoarticular allograft; group C: simple DPB osteoarticular allograft. The experimental dogs were cut off femur by wire saw from articular surface with 30 mm, then fixed the grafts to broken ends of fractured femur with cross Kirschner wires, drawn down the proximad periosteum and sutured it. At the 4th, 8th, 12th and 16th weeks after operation, the effects were partly assessed by X-ray film examination, histologic examination as well as immunohistochemistry analysis of VEGF and BMP-2, vas capillare analysis by vaso-filling with ink, radionuclide bone imaging examination (ECT) and vitodynamic tests.MAIN OUTCOME MEASURES: At the 4th, 8th, 12th and 16th weeks after operation, the effects were partly assessed by X-ray film examination, histologic examination as well as immunohistochemistry analysis of VEGF and BMP-2, vas capillare analysis by vaso-filling with ink, radionuclide bone imaging examination (ECT) and vitodynamic tests.RESULTS: All 36 rats were involved in the final results. ① From 4th to 16th week after operation, the callus formation in group A was better than that of group B and group C by x-ray film examination. ② Image analysis system displayed that the value of area integration of optical density in group A was obviously higher than that in group B and C about VEGF at the 8th, 12th and 16th weeks, and BMP-2 at the 4th, 8th, 12th and 16th weeks. The difference had statistical significance (P＜ 0.01). ③ The new vessels of grafts in group A were more than those in group B and C, part of those inclined to mature. The difference had statistical significance (P ＜ 0.01). ④ The blood flow of operation side was higher than that of uninjured side after operation, but that in group A was significantly higher than that in group B and C. The difference had statistical significance (P＜ 0.01). ⑤ At the 16th week, the result in group A was significantly higher than that in group B and C (P＜ 0.01).CONCLUSION: The recombinant deproteinized osteoarticular materials have fairly strong ability of new bone formation and vasculogenesis, and can early achieve bone healing, repairing osteoarticular defect and become autologous tissue at last.

Objective To observe the effects of recombinant human erythropoietin(rh-EPO) on immune function of cyclophosphamide-treated mice.Methods Six-week-old mice were randomly divided into 4 groups.Cyclophosphamide plus normal saline group(CTX(+NS));cyclophosphamide plus lower and higher dosage rh-EPO group(CTX+LDrh-EPO and CTX+HD rh-EPO);normal saline control group(NS).The changes of Hb,WBC,red blood cell immune function((C_3b)-R%),T lymphocyte proliferative responsiveness optical density index A(A score),IL-2,TNF-? of 4 groups were observed.Results The CTX + NS group showed lower levels on Hb,WBC,C_(3b)-R%,A score,IL-2 and TNF-? compared with NS normal control group(P0.05).There were positive correlation between C_(3b)-R% and Ascore,C_(3b)-R% and IL-2.Conclusions 1.Cyclophosphamide treated mice have lower Hb,WBC,C_(3b)-R%,A,IL-2 and TNF-? secretion.2.rh-EPO administration have improvements with Hb,RBC immune function,T lymphocyte proliferative responsiveness and IL2 production.

Objective To investigate the therapeutic effects of arsenic trioxide(ATO) plus vitamin K2(VK2) on proliferation of HL-60 cells from acute promyelocytic leukemia cell line and explore the possible mechanism.Methods ①HL-60 cells were exposed to ATO(0.0,0.5,1.0,2.0,4.0 μmol/L),VK2(0.0,2.5,5.0,10.0,20.0μmol/L),or both of different concentrations (0.5 μmol/L ATO + 2.5 μmol/L VK2,1.0 μmol/L ATO + 5.0μmol/L VK2,2.0 μmol/L ATO + 10.0 μmol/L VK2,4.0 μmol/L ATO + 20.0 μmol/L VK2) for 24,48 or 72 h,respectively.The method of CCK-8 was used to assess the proliferation of HL-60 cells and the half inhibitory concentration(IC50) of ATO or VK2 was calculated,respectively.②Combination index (CI) was used to evaluate the combinative effect of the two treatments:CI ＜ 1,=1 or ＞ 1 indicated synergistic,additive,or antagonistic effect,respectively.③After HL-60 cells were treated with 1.0 μmol/L ATO or 5.0 μmol/L VK2 individually or simultaneously for 48 h,Annnexin V/PI staining was performed to identify the apoptosis rate of each group.Untreated cells were used as control group.Results ①ATO or VK2 alone inhibited the proliferation of HL-60 cells in a concentration and time dependent manner.The IC50 of ATO or VK2 at time of 24,48,72 h were (22.86 ± 2.44),(6.66 ± 0.34),(4.14 ± 0.41) and (18.40 ± 1.12),(13.48 ± 0.73),(8.95 ± 0.40) μmol/L,respectively; ②The combination of ATO and VK2 illustrated a synergistic effect with CI ＜ 1.③No statistical difference was found among control group [(4.38 ± 0.56)％],1.0 μmol/L ATO group [(5.76 ± 1.63)％] and 5.0 μmol/L VK2 group [(6.38 ± 1.42)％] in the apoptosis rate(all P ＞ 0.05).However,the apoptosis rate of combined group did rise to (44.18 ± 8.42)％,with a significant improvement to that of VK2 or ATO group alone (all P ＜ 0.01).Conclusions The combination of VK2 and ATO exhibits an enhanced synergistical inhibitive effect on proliferation of HL-60 cells,and apoptosis may be involved in this synergy in part.

The importance of cultivating evidence-based consciousness of thinking and implementation capability of specialization postgraduates was analyzed,and experiences and suggestions acquired from the practice of teaching of specialization postgraduates were shared by demonstrating the enlightening of evidence-based consciousness of thinking,the cultivation of evidence-based implementation capability and the establishment of evaluation system,with PBL integrated.

After screening,the authors established a mouse model of pathomorphologically special,transplantable mammary spindle cell carcinoma SCC 891 in BALB/c mice.After 48 passages in 2.5 years,the growth of the tumor strain became stable with a 100% transplantibility.Its growth was quite active without observable spontaneous regression.The mean life span of the host mouse was 35.2?7.3 days.BALB/c mice of both sexes and of any age were susceptable to the carcinoma,and the carcinoma was sensitive to various anticancer drugs.

Aim To investigate the protective effect of erythropoietin(EPO )on neonatal rats'retinal neuronal cells injured by glutamic acid.Methods Retinal neuron cells were cultured and subjected to glutamic acid.The concentration of glutamic acid model was decided by observing the changes of neuronal cells with the releasing quantity of LDH and transmission electron microscope.Then cultured cells were divided into N group(normalcontral),G group(glutamic acid),EG group(EPO and glutamic acid),AG group(AG490 and glutamic acid),and AEG group(AG490,EPO and glutamic acid).MTT assay was applied to detect cell viability in five groups.The expression of Bax was detected with Western blot.Results The changes of mitochondrion and chromatin occurred in 50 ?mol?L-1 group and striking changes occurred in 100 ?mol?L-1 group with transmission electron microscope.There was apparent damage in 20?mol?L-1 group by the releasing quantity of LDH.MTT assay indicated the cell viability of EG group was higher than that of G,AG and AEG group,while,G group cell viability was higher than that of AG and AEG group.The expression of Bax in AG and AEG group was higher than that in G group. And that in G group was higher than in EG group.Conclusions EPO pretreatment can effectively protect the neuronal cells from injuries induced by glutamic acid.Down regulation of Bax and decrease of apoptosis through Jak2 passageway may be the mechanism of protection.

Objective To explore the ability of revascularization of big section deproteinized bone (DPB) allograft combining calcium phosphate cement (CPC) with recombinant human vascular endothelial growth factor (rhVEGF) and bone morphogenetic protein-2 (rhBMP-2). Methods Totally 36 adult hybrid dogs were inflicted to demi-articular defect models by exsecting 30 mm right femur inferior extremity near articular surface,and then randomly divided into 3 groups, group A, receiving material CPC/rhVEGF/rhBMP-2/DPB transplantation into the demi-articular defect, group B, material rhVEGF/rhBMP-2/DPB transplantation, and group C with simple material DPB transplantation. At 4, 8, 12 and 16 weeks after operation, vasculogenesis and new bone formation were assessed by X-ray examination, histological examination, transmission electron microscopy, vas capillare analysis by vaso-filling with ink and radionuclide bone imaging examination (ECT). Results The bone formation and vascularization was significantly superior in group A to that in group B and C. The results of vaso-filling examination with ink and arterial perfusion of ECT examination were both significantly superior to that in group B and C (P

Objective To construct a novel VP 1 gene vaccine against coxsackievirus B 2 and to evaluate the effect of the cell-mediated immunity induced by it.Methods The immunodominant capsid protein VP 1 gene of CVB 2 was amplified by reverse transcript polymerase chain reaction (RT-PCR) and pcDNA 3-CVB 2VP 1was constructed by molecular cloning.The cytotoxic T lymphocyte (CTL) activity was measured by standard 51Cr-release cytotoxicity assay eight weeks after BALB/c mice were immuned by pcDNA 3-CVB 2VP 1.Results The eukaryotic expression vector was pcDNA 3 and subcloning fragment was CVB 2VP 1.The CTL activity of pcDNA 3-CVB 2VP 1 group was higher than that of the control (P