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Objective To observe the skin ultrastructure change of electric shock death rats and to test the expression changes of hypoxia-inducible factor-2α （HIF-2α） and heart type-fatty acid-binding protein （H-FABP） of myocardial cells, in order to provide basis for forensic identification of electric shock death. Methods The electric shock model of rats was established. The 72 rats were randomly divided into control group, electric shock death group and postmortem electric shock group. Each group was divided into three subgroups, immediate （0 min）, 30 min and 60 min after death. The skin changes of rats were observed by HE staining, the changes of skin ultrastructure were observed by scanning electron microscopy, and the expression of HIF-2α and H-FABP in rats myocardium was tested by immunohistochemical staining. Results The skin in the electric shock death group and postmortem electric shock group had no significant difference through the naked eye or by HE staining. Under the scanning electron microscope, a large number of cellular debris, cells with unclear boundaries, withered cracks, circular or elliptical holes scattered on the cell surface and irregular edges were observed. A large number of spherical foreign body particles were observed. Compared with the control group, the expression of HIF-2α in all electric shock death subgroups increased, reaching the peak immediately after death. In the postmortem electric shock group, HIF-2α expression only increased immediately after death, but was lower than that of electric shock death group （P<0.05）. Compared with the control group, the expression of H-FABP in all subgroups of electric shock death group and postmortem electric shock group significantly decreased. The expression of H-FABP in all subgroups of electric shock death group was lower than that of the postmortem electric shock group （P<0.05）. Conclusion Electric shock can increase HIF-2α expression and decrease H-FABP expression in the myocardium, which may be of forensic significance for the determination of electric shock death and identification of antemortem and postmortem electric shock.
Subject(s)
Animals , Rats , Autopsy , Basic Helix-Loop-Helix Transcription Factors/metabolism , Fatty Acid Binding Protein 3/metabolism , Myocardium/metabolism , Myocytes, Cardiac/metabolism , Skin/ultrastructureABSTRACT
Objective To investigate the inhibition of aldose reductase (AR) and antioxidant activity of fractions of ethyl acetate extract from Toona Sinensis seeds. Methods The antioxidant activities of fractions of ethyl acetate extract from Toona Sinensis seeds was evaluated with total antioxidant capacity and DPPH?free radicals scavenging. The inhibition and inhibition types of AR were investigated and the relationship of antioxidant activity and AR inhibitory activity was analyzed. Results Fractions of ethyl acetate extract from Toona Sinensis seeds exhibited antioxidant activity, total antioxidant capacity ordered by Fr.B>Fr.A>Fr.D>Fr.C. The DPPH?free radicals scavenging were ordered by Fr.A>Fr.B>Fr.D>Fr.C. The fractions exhibited AR inhibitory activity and the order was Fr.B>Fr.A>Fr.C>Fr.D. The inhibition mechanism of Fr.B was noncompetitive inhibition and IC50 was 0.401 mg/ml. The AR inhibitory activity of fractions was related to antioxidant activity with correlation index over 0.9. Conclusion This study will provide theoretical basis for exploitation of Toona Sinensis seeds.
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BACKGROUND: Fracture of the proximal femur is common in the elderly. Biological artificial femoral head replacement is one of the main methods of surgical treatment, but in the patients with chronic renal disease, the surgical efficacy and safety are variously reported. OBJECTIVE: To analyze the middle- and short-term effects of biological artificial femoral head replacement in elderly patients with proximal femoral fracture of chronic renal disease. METHODS: Biological artificial femoral head replacement was used to treat 53 patients with proximal femoral fractures (aged 75 years and over). They were divided into two groups according to renal function: chronic renal disease group (n=25) and non-chronic renal disease group (n=28). Operation time, intraoperative blood loss, intraoperative blood transfusion, postoperative drainage volume of 24 hours, and partial and complete weight-bearing time, hospitalization time, hospitalization expenses and complications were compared between the two groups. Harris hip joint function score, dual energy X-ray bone density, prosthesis loosening, periprosthetic osteolysis and implant survival rate were compared in the two groups during follow-up. RESULTS AND CONCLUSION: (1) In the non-chronic renal disease group, one patient died of respiratory failure at 1 month after replacement, and one case was refurbished at 3 months after replacement. In the chronic renal disease group, one patient died of cardiopulmonary failure at 3 months after replacement. Other patients in both groups were followed up for 1-8 years. The repair efficacy was satisfactory. (2) The excellent and good rate of hip function Harris score was 83% and 85% at 6 months after operation in chronic renal disease group and non-chronic renal disease group, respectively (P > 0.05). (3) No significant differences in operation time, blood loss, the volume of drainage 24 hours after the operation, the partial and complete weight-bearing time and dual energy X-ray bone density were determined between the two groups. The blood transfusion was larger; hospitalization time was longer; hospitalization expenses were more in the chronic renal disease group compared with the non-chronic renal disease group. (4) Patients in the two groups experienced different degrees of osteolysis, but no obvious prosthesis loosening was found. One patient in the non-chronic renal disease group underwent revision because of repeated dislocation of the prosthesis. The survival rates of the prosthesis in the chronic renal disease group and non-chronic renal disease group were 100% and 96% respectively (P > 0.05). (5) For elderly patients with proximal femoral fracture of chronic renal disease, the biological artificial femoral head replacement obtained good repair efficacy, and the function of the limbs was improved obviously with careful preoperative preparation.
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OBJECTIVES@#To observe the changes of the formation time of venous thrombus in rats, and to provide new ideas and methods for the estimation on thrombus formation time of the forensic cases died from thrombosis.@*METHODS@#Totally 80 rats were randomly divided into 10 groups （0 h, 3 h, 6 h, 12 h, 1 d, 3 d, 1 week, 2 weeks, 3 weeks and 4 weeks after operation）. A vein thrombosis model was established by the "narrow" method. The processes of thrombosis, organization, recanalization and the features of change on hemosiderin and calcium salt were observed by HE stain, Perls stain and Von Kossa stain. The expression changes of CD61, α-SMA and CD34 were observed by immunohistochemical staining technique.@*RESULTS@#Platelets adhered to the exposed blood vessel intima 3 h after operation, and platelet trabeculae were formed by the repeated accumulation of platelets 1 d after operation. The thrombus organization formed through the fibroblasts from vessel wall that grew into the interior of the thrombus 3 d after operation. Endothelial cells covered the surface of thrombus and then the new blood vessels were reformed, and the vessels were reconstructed. The expression of CD61 upregulated at the stages of the thrombus formation （3 h） and thrombus reformation （4 weeks）, and reached the peak 1 d after thrombus formation. The release of hemosiderin and the initial expression of α-SMA were detected 3 d later. Calcium deposit and expression of CD34 were observed 1 week later.@*CONCLUSIONS@#The hemosiderin, calcium salt, CD61, α-SMA and CD34 show time-dependent changing characteristics, which is expected to provide a reference for the estimation on thrombus formation time of the forensic cases died from thrombosis.
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Animals , Rats , Antigens, CD34/analysis , Hemosiderin/metabolism , Venous Thrombosis/pathologyABSTRACT
AIM To establish an HPLC method for determining the contents of three constituents in Polygoni multiflori Radix Praeparata in plasma of atherosclerosis rats.METHODS After the rats were intragastrically administrated with Polygoni multiflori Radix Praeparata CMC-Na solution,the plasma was collected.The HPLC analysis was carried out on a 30 ℃ thermostatic Hypersil C1s column (250 mm ×4.6 mm,5 μm),with the mobile phase comprising of acetonitrile-0.03％ phosphoric acid flowing at 0.9 mL/min in a gradient elution manner,and the detection wavelength was set at 280 nm.DAS2.0 software was applied to drawing concentration-time curves and calculating pharmacokinetic parameters.RESULTS Stilbene glucoside,emodin and physcion showed good linear relationships within the ranges of 61.25-6 125 μg/L (r =0.999 8),12.6-3 150 μg/L (r =0.999 3) and 24.1-6 030 μg/L (r =0.999 5),respectively.The method recoveries were 99.5％-105.8％ with the RSDs of 1.3％-3.3％,while the extraction recoveries were 87.2％-96.3％ with the RSDs of 3.2％-5.9％.The pharmacokinetic behaviors of three constituents all accorded with two-compartment model,but their contents in plasma were much lower than those in medicinal material.CONCLUSION The bioavailabilities of stilbene glucoside,emodin and physcion are relatively low in plasma of atherosclerosis rats,which may be related to constituents' intestinal absorption after intragastric administration with Polygoni multiflori Radix Praeparata.
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AIM To establish a gas chromatography-flame ionization detector (GC-FID) method for the simultaneous content determination of four constituents in Kaihoujian Spray (a spray for management of oral and laryngopharyngeal inflammatory condition,containing Sophorae tonkinensis Radix et Rhizoma,Cicadae Periostracum,menthol,etc.).METHODS The analysis of mixure of Kaihoujian Spray and internal standard (dibutyl phthalate) solution was conducted on an HP-INNOWax column (30 m ×0.25 mm ×0.25 μm),both of the injector temperature and detector temperature were set at 260 ℃,the split ratio was 5 ∶ 1,and the flowing rate was 1.5 mL/min.RESULTS Menthol,matrine,sophocarpine and sophoridine showed good linear relationships within the ranges of 0.228 7-2.287 0 mg/mL (r =0.999 7),0.011 1-0.111 0 mg/mL (r =0.999 6),0.016 8-0.168 0 mg/mL (r =0.999 8) and 0.003 4-0.034 0 mg/mL (r =0.999 4),whose average recoveries (n =9) were 98.4％ (RSD=1.2％),95.9％ (RSD=1.8％),96.2％ (RSD=2.1％) and 97.1％ (RSD=1.7％),respectively.CONCLUSION This accurate,sensitive and simple method can be used for the quality control of Kaihoujian Spray.
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Objective To carry on the training of empathy ability among nursing undergraduates and understand its influence on that empathy and professional commitment. Methods Nursing undergraduates of two classes in the Chengdu University of TCM were selected as the objects in this study, who had accepted Nursing Psychology. The students in one class (52 cases) as the intervention group, while the students in the other class (61 cases )as the control group. Routine education was used in the control group, the empathy education was used in the intervention group in addition. On the basis of the Jefferson Scale of Empathy (JSE) and Nursing professional commitment Scale a survey on empathy ability among nursing undergraduates and professional commitment had done for the investigation of its influence on those two sides. Results After the training, the general professional commitment scores in the intervention group was 85.89 ± 11.86, which was significant higher than 77.53 ± 11.93 in the control group (t=3.822,P < 0.01). The final scores of commitment and empathy had significant relation with their respective latitudes (P < 0.05 or <0.01). Conclusions The training of empathy ability among nursing undergraduates affects their empathy ability and professional commitment. And students’professional commitment can be improved through some targeted trainings.
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OBJECTIVE@#To observe cardiac ultrastructure and the expression of heat shock protein 70 (HSP70) and hypoxia inducible factor-lα (HIF-lα) in electric shock death rats and to explore the application of these indexes as the basis of medical identification in electric shock death.@*METHODS@#Seventy-two SD rats were randomly divided into electric shock death group, postmortem electric shock group and the control group. The changes of myocardial ultrastructure were observed by transmission electron microscope, and the expressions of myocardial HSP70 and HIF-1α were observed by immunohistochemical technology.@*RESULTS@#Myocardial myofibril fracture, mitochondrial cristae and membrane dissolution, and disordered arrangement of Z lines and M lines were observed in electric shock rats. HSP70 and HIF-lα were strong positive expressions in the electric shock death group, significantly compared with the control and postmortem electric shock groups (P < 0.05).@*CONCLUSION@#The expressions of HSP70 and HIF-lα were obviously increased in electric shock death group, which may be used as the diagnostic indicator of electric shock death.
Subject(s)
Animals , Rats , Death , HSP70 Heat-Shock Proteins/metabolism , Hypoxia-Inducible Factor 1, alpha Subunit/metabolism , Myocardium/pathology , Rats, Sprague-DawleyABSTRACT
OBJECTIVE@#To investigate the process of apoptosis in lungs and liver induced by crushing hindlimbs of rat, and study the mechanism of crush injury.@*METHODS@#The rat experimental model of hindlimbs crush injury was established. The cell apoptosis in lungs and liver was detected by TUNEL assay, and the expression of Bax, Bcl-2 and caspase-3 apoptin was examined by immunohistochemistry.@*RESULTS@#Compared with the control group, the partial muscle injury of rat's hindlimbs was more serious with more apoptosis observed in lungs and liver (P < 0.05). The expression of Bax was up-regulated and Bcl-2 was down-regulated, whereas caspase-3 expression was activated (P < 0.05).@*CONCLUSION@#The cell apoptosis has increased significantly in lungs and liver after crush injury of hindlimbs in rat. The correlation factor released during tissue injury may mediate apoptosis process.
Subject(s)
Animals , Rats , Apoptosis/physiology , Caspase 3/metabolism , Genes, bcl-2 , Hindlimb/injuries , Immunohistochemistry , Liver/physiopathology , Lung/physiopathology , Up-Regulation , bcl-2-Associated X ProteinABSTRACT
Objective To investigate the process of apoptosis in lungs and liver induced by crushing hindlimbs of rat, and study the mechanismof crush injury. Methods The rat experimental model of hindlimbs crush injury was established. The cell apoptosis in lungs and liver was detected by TUNEL assay, and the expression of Bax, Bcl-2 and caspase-3 apoptin was examined by immunohistochemistry. Results C ompared with the control group, the partial muscle injury of rat’s hindlimbs was more serious with more apoptosis observed in lungs and liver (P<0.05). The expression of Bax was up-regulated and Bcl-2 was down-regulated, whereas caspase-3 expression was activated (P<0.05). Conclusion The cell apoptosis has increased significantly in lungs and liver after crush injury of hindlimbs in rat. The corre-lation factor released during tissue injury may mediate apoptosis process.
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Objective T o observe cardiac ultrastructure and the expression of heat shock protein 70 (H SP70) and hypoxia inducible factor-1α (H IF-1α) in electric shock death rats and to explore the application of these indexes as the basis of m edical identification in electric shock death. Methods Seventy-tw o SD rats w ere random ly divided into electric shock death group, postm ortem electric shock group and the control group. T he changes of m yocardial ultrastructure w ere observed by transm ission electron m icro-scope, and the expressions of m yocardial H SP70 and H IF-1α w ere observed by im m unohistochem ical technology. Results M yocardial m yofibril fracture, m itochondrial cristae and m em brane dissolution, and disordered arrangem ent of Z lines and M lines w ere observed in electric shock rats. H SP70 and H IF-1αw ere strong positive expressions in the electric shock death group, significantly com pared w ith the con-trol and postm ortem electric shock groups (P<0.05). Conclusion T he expressions of H SP70 and H IF-1αw ere obviously increased in electric shock death group, w hich m ay be used as the diagnostic indicator of electric shock death.
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Purpose To evaluate the diagnostic values of Clusterin, CXCL13, Podoplanin (D2-40), CD21 and CD35 in follcular den-dritic cell sarcoma. Methods The expression levels of 10 cases of follcular dendritic cell sarcoma ( FDCS) and 12 types of FDCS mimics (83 cases in total) were investigated by immunohistochemical methods, the latter including solitary fibrous tumor, leiomyosar-coma, gastrointestinal stromal tumor and others. The diagnostic validities of the five biomarkers were compared. Results ( 1 ) The positive rates of Clusterin, CXCL13, D2-40, CD21 and CD35 in the FDCS group were 100%, 70%, 60%, 90% and 80%, respec-tively, the corresponding rates in the control group were 30%, 4%, 11%, 2% and 0 in turn. (2) The five biomarkers could be cate-gorized into 3 groups, according to their diagnostic values in FDCS. The first group included CD21 and CD35, which had much higher sensitivities (90%, 80%), specificities (100%, 98%) and accuracies (98%, 96%), compared with the other biomarkers. The second group included CXCL13 and D2-40, which had a relatively lower sensitivities (70%, 60%), specificities (96%, 89%) and accuracies (94%, 86%), compared with CD21 and CD35. The third group included Clusterin, which had the highest sensitivity (100%), while the specificity (70%)and accuracy (73%) were inferior to the first and second groups. (3) The diagnostic values of CD21 and CD35 combination were 100%, 98%, 98%, 83% and 100%, respectively. Conclusions (1) CD21 and CD35 are the most valuable biomarkers for FDCS. The combined diagnostic effect of the two markers is generally superior to that of single marker. (2) Clusterin has the highest sensitivity for FDCS. However, the frequent expression in FDCS mimickers restricts its diagnostic values for FDCS. (3) CXCL13 and D2-40 may be used as a marker for FDCS, but are not recommended as the first selection based on their diagnostic performance. (4) On the reasons that FDCS mimickers may not uncommonly express Clusterin and D2-40, and rarely show positivity for CD21 or CXCL13, more attention should be paid to the phenomenon to avoid misdiagnosis.
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Purpose To explore the clinicopathologic characteristics, immunophenotype, diagnosis and differential diagnosis, molecu-lar genetic feature, treatments and prognosis of intra-abdominal EIMS. Methods Two cases of intra-abdominal EIMS were studied with clinical manifestations, histology and immunohistochemical staining, and its clinical and pathological findings were further ana-lyzed with review of the literature. Results Case 1 was a 15-year-olds male and case 2 was a 21-year-olds female both of whom pres-ented with abdominal pain. Two patients were treated by surgical excision. Microscopically the tumor consisted of two different histolog-ical types, one of which was of high cell density and the other with low cell density and myxoid stroma. Both of these areas contained inflammatory cells, mainly neutrophils with few lymphocytes and plasmocytes. Tumor cells had an epithelioid phenotype with round nu-clei and small nucleoli, various nuclear atypia and mitotic figures were also found, which consistented with the diagnosis of epithelioid inflammatory myofibroblastic sarcoma. Immunohistochemical analysis revealed that the tumor cells were positive for ALK, vimentin, desmin, and CK(AE1/AE3) (focal), and were negative for Calretinin, CD30, CD31, CD33, SMA, HHF35, Myogenin, S-100, HMB-45, CD20, CD79a, CD3, CD5, CD45 and CD68. ALK rearrangement was identified in both cases by FISH using ALK break-a-part probe. Conclusions As an extremely rare tumor, the distinguishing between epithelioid inflammatory myofibroblastic sarcoma and conventional inflammatory myofibroblastic tumor is important. ALK inhibitors are theoretically useful for treating these tumors.
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Purpose To investigate the clinicopathological features, treatment and prognosis of perivascular epithelioid cell tumor ( PEComa) of the head and neck. Methods Two cases of PEComa were analyzed by studying clinical data, histopathologic and immu-nohistochemical ( EnVision) changes and the related literatures were reviewed. Results Case 1 was a 26-year-old woman with a re-current larynx tumor, and case 2 was diagnosed in a 56-year-old man with a left nasal cavity mass. Their tumors were well-demarcated, and ranged from 2. 5 to 3. 5 cm in diameter. Microscopically, the tumors were composed of epithelioid cells arranged in nets, organoid pattern. The tumor cells had abundant pale eosinophilic granular to clear cytoplasm, vesicular nuclei, and mild atypia. The stroma was rich in capillaries, sinusoidal vasculature. There was mitotic activity and focal necrosis. By immunohistochemistry, the tumor cells were diffusely or focally positive for vimentin (2/2), HMB-45(1/2), Melan-A(2/2), SMA(2/2), Calponin(2/2), desmin(1/2), and TFE3(1/2). They were negative for CK, CD10, S-100, CgA, Syn, and MyoD1. Conclusion PEComa of the head and neck is rare. Definite diagnosis depends upon the comprehensive analysis of histopathology and coexpression of melanocytic and myoid mark-ers. The differential diagnosis include paraganglioma, malignant melanoma and metastatic carcinoma. Few PEComas of the head and neck behaved in an aggressive fashion with distant or loco-regional metastases and died of disease-related causes, it should be regarded as tumors with a malignant potential.
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Objective To observe the expression of high mobility group A 1(HMGA1)protein in pituitary adenoma(PA)and explore its relationship with the aggressiveness and recurrence of PA .Methods The labeling index(LI)of HMGA1, detected by immunohistochemistry staining , was compared between aggressive and non-ag-gressive PA, recurrent and non-recurrent PA.Results The expression of HMGA1 were observed in all 52 cases of PA and homogenously distributed in nuclear of tumor cells .The LI of HMGA1 showed no significant difference between functioning and nonfunctioning PA (P=0.79), as well as among different immunophenotypical variants of PA(P=0.28).The expression of HMGA1 was significantly higher in the aggressive PA than in the nonaggres-sive PA(0.50 ±0.20 vs 0.24 ±0.17, P=0.000).Patients with a recurrent PA had a higher value of HMGA 1 than patients with a non-recurrent PA(0.60 ±0.20 vs 0.24 ±0.18, P=0.000).The expression of HMGA1 in-creased stepwise with the tumor size, as the highest was present in macro-sized PA(0.52 ±0.20)and the lowest was in micro-sized PA(0.18 ±0.17).A similar trend was found in Hardy's grade I(0.18 ±0.17),II(0.30 ± 0.20)and III-IV(0.50 ±0.20)(P=0.003).The area under the ROC curve was 0.918(>0.90).When the LI reached 49.2%, the predicting specificity was 90.5%and the sensitivity was 71.4%.Conclusions The LI of HMGA1 has a positive correlation with the tumor size , aggressiveness and recurrence of PA and also has a valua-ble predicting efficacy for PA recurrence .The characteristics of HMGA 1 in PA can help pathologists make repro-ducible evaluation on prognosis of PA .
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Purpose To study the clinic-pathologic features, differential diagnosis and prognosis of lymphoepithelioma-like carcinoma of cervix. Methods Eight cases of lymphoepithelioma-like carcinoma of cervix were retrieved from our institution. HE staining, im-munohistochemistry and in situ hybridization were perform on those cases. Results Of the 8 cases of lymphoepithelioma-like carcino-ma,the median age was 44 years old ( ranged from 29-67 years) and all of the clinical stage belonged toⅠB. Grossly, 5 cases presen-ted a cauliflower-like appearance, 1 case grew as a polyp protrusion, and the other 2 cases showed a non-specified thicken change of cervix. Histologically, the tumors were composed of undifferentiated large cells, either loosely or closely-packed, with the nested and trabecular growth pattern. The tumor cells were generally oval or polygonal in shape, while the demarcation between the cells was indis-tinct and form the syncytial appearance. The nuclei were vesicular and had one or more prominent nucleoli. There were abundant infil-trates of lymphocyte and plasma cells among the tumor nests. The tumor cells showed positive expression of CK in 100% of cases, p63 in 37. 5% of cases, p16 in 62. 5% of cases, CK5/6 in 75% of cases, Ki-67 in 10% ~30% of cases. The stromal lymphocytes mainly expressed CD3 and CD8. EBER was negative in the entire tumor cells while was weakly positive in the stromal lymphocytes in one case. The follow-up data, which terminated at June 2013, demonstrate 7 cases were alive and 1 case died of the disease. Conclusions Lymphoepithelioma-like carcinoma occurred of cervix is rare. They have distinctive morphologic features and overall favorable prog-nosis. The accurate diagnosis is dependant on the combination of the histologic and immunohistochemical examination.
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<p><b>OBJECTIVE</b>To observe whether Xuefu Zhuyu Decoction (XZD) could induce the differentiation of mesenchymal stem cells (MSCs) into cardiac myoid cells, thus seeking for safe and effective inducers.</p><p><b>METHODS</b>The serum pharmacological method was used to induce. XZD containing serum was prepared. MSCs were isolated and cultured. The serum cytotoxicity was detected by MTT. The third generation of favorably grown cells was selected in this experiment. Cells were divided into three groups, i.e., the vehicle control group, the XZD containing serum induced group, and the 5-azacytidine induced group. Expressions of Desmin and alpha-actin were detected by immunocytochemical staining method.</p><p><b>RESULTS</b>Before induction protein expressions of Desmin and alpha-actin were negative, and few was weakly positive. There was no statistical difference in the weak positive expression rate among the 3 groups (P > 0.05). After induction protein expressions of Desmin and alpha-actin were negative, and few was weakly positive in the vehicle control group. Protein expressions of Desmin and alpha-actin were positive in the XZC containing serum induced group and the 5-azacytidine induced group. There was statistical difference in the positive expression rate when compared with the vehicle control group (P > 0.05).</p><p><b>CONCLUSIONS</b>XZD played a role in in vitro inducing differentiation MSCs to cardiac myoid cells. It might participate in expressions of Desmin and alpha-actin.</p>
Subject(s)
Animals , Male , Rats , Actins , Metabolism , Bone Marrow Cells , Cell Biology , Metabolism , Cells, Cultured , Desmin , Metabolism , Drugs, Chinese Herbal , Pharmacology , Mesenchymal Stem Cells , Cell Biology , Metabolism , Rats, Wistar , SerumABSTRACT
OBJECTIVE@#To investigate changes of LDH and HBDH activity in rabbit serum after non-thermal low voltage electrical injury and to provide diagnostic criteria for non-thermal low voltage electrical injury.@*METHODS@#Forty New Zealand rabbits were randomly distributed into control group and electrical injury group (EI-groups; designated 7 time points: 0 h, 2 h, 4 h, 12 h, 1 d, 2 d, 3 d), 5 rabbits per each group. EI-groups were treated with the method of non-thermal low voltage electrical injury established in our laboratory. Ventricular blood (5 mL) was obtained under anesthesia at designated time points after electrical injury. The activities of LDH and HBDH were measured.@*RESULTS@#Dynamic changes were observed with certain patterns from target serum enzyme activities after electrical injury. Compared with control group, the activities of LDH increased markedly at 4 h, 12 h, and on days 1, 2, and 3 after injury (4 h, 12 h, and day 1 P<0.01; day 2 and day 3 P<0.05). Activities of HBDH increased markedly at day 2 and day 3 after injury (P<0.05). The ratio of HBDH/LDH decreased markedly at 2 h, 4 h, and 12 h after injury (P<0.01).@*CONCLUSION@#Dynamic changes of LDH and HBDH activities may be useful in diagnosis of non-thermal low voltage electrical injury and in estimation of post injury intervals.
Subject(s)
Animals , Female , Male , Rabbits , Electric Injuries/enzymology , Forensic Pathology , Hydroxybutyrate Dehydrogenase/blood , L-Lactate Dehydrogenase/blood , Random AllocationABSTRACT
<p><b>OBJECTIVE</b>To explore the effect of hyperthermic intraoperative intraperitoneal chemotherapy (HIIC) on the postoperative metastatic rate and survival rate of advanced gastric cancer (AGC).</p><p><b>METHODS</b>In HIIC group, patients received HIIC (mitomycin C 30 mg and cisplatin 100 mg were added into 2000 ml distilled water, heated to 42 approximately 45 degrees C, perfused to abdominal cavity for 30 min and then sucked) and intravenous chemotherapy after operation (5- FU 10 approximately 15 mg/kg, mitomycin C 0.1 approximately 0.15 mg/kg, adriamycin 0.5 approximately 1 mg/kg i.v drip, once a week for 2 approximately 3 weeks). In control group, patients received intravenous chemotherapy only. The postoperative metastatic rate and survival rate (1- , 3- and 5- year) of patients were compared between 92 cases of AGC undergone HIIC and 120 cases of AGC without HIIC (control group).</p><p><b>RESULTS</b>The peritoneal recurrence rates after operations occurred within two years were 14.1% and 37.5% in HIIC group and control group respectively (P < 0.01). The 1- , 3- , and 5- year survival rates in HIIC group were 98.9%, 68.5%, and 52.2% and in control group 95.0%, 56.7% and 37.5% respectively. The 3- , and 5- year survival rates were significantly different between the two the groups (P < 0.05).</p><p><b>CONCLUSION</b>HIIC can kill isolated intraperitoneal cancer cells, reduce peritoneal recurrence rate after operations, raise significantly survival rate of patient, and improve the prognosis of AGC.</p>
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Antineoplastic Combined Chemotherapy Protocols , Therapeutic Uses , Chemotherapy, Cancer, Regional Perfusion , Cisplatin , Hyperthermia, Induced , Injections, Intraperitoneal , Intraoperative Period , Mitomycin , Oxonic Acid , Stomach Neoplasms , TherapeuticsABSTRACT
<p><b>BACKGROUND</b>To observe the LMP2 specific cellular and humoral immune responses after immunization with recombinant adenovirus Ad-LMP2 in rhesus.</p><p><b>METHODS</b>The rhesuses were immunized with Ad-LMP2 through intra muscular injection in three groups, high dosage (4.5 x 10(11) VP/kg), medium dosage (1.5 x 10(11) VP/kg) and low dosage (0.5 x 10(11) VP/kg) groups. They were totally immunized six times at intervals of 5 days. The specific cellular immune responses were tested during the 7th week by ELISPOT after immunization. And the titers of anti-LMP2 antibody were tested by EIA throughout the period of immunization.</p><p><b>RESULTS</b>LMP2 induced specific cellular and humoral immune responses in all three dosage group. The potency of immune responses was related with the dosage of immunization. Higher dosage elicited more potent immune response. Both the neutralizing antibody to adenovirus and anti-LMP2 antibody could be detected from 2 weeks after immunization. They would reach the peak during 3-4 weeks after immunization, then declined during the 7th week after immunization.</p><p><b>CONCLUSION</b>The recombinant adenovirus LMP2 could induce specific cellular and humoral responses in rhesus after immunization.</p>