2.The feasibility of bedside temporary transvenous cardiac pacing with balloon tipped floating catheter under non X-ray fluoroscopy
Chinese Journal of Postgraduates of Medicine 2014;37(11):33-35
Objective To investigate the feasibility of bedside temporary transvenous cardiac pacing with balloon tipped floating catheter under non X-ray fluoroscopy.Methods Twenty-four patients of bedside temporary transvenous cardiac pacing,11 cases underwent common electrode (common group),13cases underwent balloon tipped floating electrode (balloon tipped group).The operating time,pacing thresholds,pacing perception and complications were observed between two groups.Results All balloon tipped group placement success,8 cases in common group successfully.The operating time in balloon tipped group was significantly less than that in common group [(2.5 ± 1.5) min vs.(9.3 ±5.3) min],there was significant difference (P < 0.05),but pacing thresholds and pacing perception between two groups had no significant difference (P > 0.05).Common group occurred complications in 2 cases,respectively cardiac perforation and induced paroxysmal ventricular tachycardia,balloon tipped group occurred concurrent electrode wire dislocation in 2 cases.Conclusion Compared with the common electrode,balloon tipped floating electrode is simple,fast,high success rate and low risk of complications,suitable emergency physician bedside operating emergency temporary pacing.
3.Prognostic value of DNA ploidy and nuclear morphometry in renal cell carcinoma
Journal of Chongqing Medical University 2003;0(06):-
Objective:To determine the prognostic value of DNA ploidy and nuclear morphometry,and its relations to nuclear grading in renal cell carcinoma.Methods:Pathological grading were done in 47cases of renal cell carcinoma in accordance with the system proposed by Fuhrman et al.Feulgen staining were performed in the tumor histological slides,and the technique of image cytometry was used to quantitate nuclear DNA ploidy and nuclear morphological parameters.The results combined with the data of clinical follow up were analyzed.Results:The mean DNA ploidy in grade Ⅰ~Ⅱ was mainly 2C,≥5C cells less than 10%;the 2C cells in grade Ⅲ~Ⅳ were lower than in grade Ⅰ~Ⅱ,≥5C cells were more than 20%.Among the four grades DNA ploidy were statistically different( P
4.Effect of active oxygen on hepatocarcinoma tissues of rabbits
Chinese Journal of General Surgery 1993;0(01):-
80) via portal vein.After reperfusion 1 h,1 d,3d and 7 d respectively,the concentration of superoxide dismutase(SOD) and catalase(CAT) were tested,and the apoptosis of hepatocarcinoma also was observed using terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling(TUNEL) method.Results The results indicated that the SOD concentration in both hepatocarcinoma tissue and normal hepatic tissues decreased following I/R and perfusion with hyperoxic fluid liquid.The concentration of CAT increased following I/R in normal hepatic tissues.In hepatocarcinoma tissue,concentration of CAT decreased after reperfusion for 1 d and reached its lowest point.After perfusion with hyperoxic fluid,the concentration of SOD in both hepatocarcinoma tissue and normal hepatic tissues decreased more quickly following I/R and the low level was still found on 7 d after reperfusion.The concentration of CAT in tissues of both groups decreased and reached the lowest level at 1 h after reperfusion,but it was restored at 3 d reperfusion in normal hepatic tissues,and in hepatocarcinoma tissue was still at lower level until 7 d after reperfusion. After I/R,the apoptotic cells increased in normal hepatic and hepatic cancer tissues,and were most marked in tissues of hepatic carcinoma at 1 d and 3 d after perfusion with hyperoxic fluid.After I/R and perfusing with hyperoxic fluid,the changes of SOD and CAT and apoptosis in hepatocarcinoma tissue were more obvious than that in normal hepatic tissues(P
5.Effects of exercise training on myocardial mitochondrial miR-499-CaN-Drp-1 apoptotic pathway in mice.
Chinese Journal of Applied Physiology 2015;31(3):259-263
OBJECTIVETo detect the levels of miR-499 and relative proteins in hearts of mice after exercise training, and investigate the mechanism of exercise-regulative apoptosis.
METHODSMale C57BL/6 mice were randomly divided into 3 groups( n = 14): sedentary (SE), exercise training 1 (ET1) and exercise training 2 (ET2) group. SE did not do any exercise. ET1 performed swimming training for 8 weeks. ET2 performed the same work as ET1 until the 5th week. Then, mice trained twice a day until the end of training. TUNEL assay was applied to test myocardial apoptosis, RT-PCR and Western blot were used to detect miR-499 and proteins levels respectively.
RESULTSCompared with SE, stress in ET1 failed to affect apoptotic index (AI) and miR-499-CaN-Drp-1 pathway (P > 0.05). In contrast, exercise load in ET2 increased miR-499 level, decreased Drp-1 level and AI with statistical significance respectively (P < 0.05), but neither CaN expression nor CaN activity was changed significantly (P > 0.05).
CONCLUSIONSwimming training can inhibit myocardial apoptosis, and the decrease in Drp-l may be responsible for the reduced myocardial apoptosis. CaN, the upstream protein, does not participate in exercise-regulative apoptosis.
Animals ; Apoptosis ; Dynamins ; metabolism ; Heart ; Male ; Mice ; Mice, Inbred C57BL ; MicroRNAs ; metabolism ; Mitochondria, Heart ; physiology ; Myocardium ; pathology ; Physical Conditioning, Animal ; Swimming
6.Advances on biomechanics and kinematics of sprain of ankle joint.
China Journal of Orthopaedics and Traumatology 2015;28(4):374-377
Ankle sprains are orthopedic clinical common disease, accounting for joint ligament sprain of the first place. If treatment is not timely or appropriate, the joint pain and instability maybe develop, and even bone arthritis maybe develop. The mechanism of injury of ankle joint, anatomical basis has been fully study at present, and the diagnostic problem is very clear. Along with the development of science and technology, biological modeling and three-dimensional finite element, three-dimensional motion capture system,digital technology study, electromyographic signal study were used for the basic research of sprain of ankle. Biomechanical and kinematic study of ankle sprain has received adequate attention, combined with the mechanism research of ankle sprain,and to explore the the biomechanics and kinematics research progress of the sprain of ankle joint.
Ankle Injuries
;
physiopathology
;
Ankle Joint
;
physiopathology
;
Biomechanical Phenomena
;
Finite Element Analysis
;
Humans
;
Sprains and Strains
;
physiopathology
7.Research progress of mechanisms outer membrane proteins of Helicobacter pylori and its adherence
Journal of Shanghai Jiaotong University(Medical Science) 2017;37(2):249-252
Helicobacter pylori is a predominant pathogen inducing long-term chronic infection of stomach. Its outer membrane proteins (OMPs) mainly include lipoprotein, fimbriae protein and some adhesions. The adhesions are closely related to the pathogenic processes of adherence, colonization, persistent infection and severe clinical outcomes. In addition, the fact that adherence is vital for colonization and pathogenicity has made it a focus to study the vaccines against adherence. The OMPs related to adherence, their receptors, mechanisms of adherence, and the vaccines are summarized in this review.
8.Clinical Analysis of 13 Cases of Glomus Tumors
Journal of Medical Research 2009;38(8):60-61
Objective To investigate the occurence of glomus tumor and investigate its diagnosis and treatment. Methods 13 cases of glomus tumors were analyzed retrospectively. There were 9 females and 4 males. All 13 cases were surgically treated under megaloscpe. Results All the cases were testified as glomua tumors by pathology. There was no recurrence during the follow up of 6 months to 1 year. All the patients were symptom free. Conclusion Glomus tumor has specific features on clinical presentation. Mierosurgieal excision under megaloscpe is fill elective method.
9.Expressions of MCM5 and Ki67 in cervical intraepithelial neoplasia and cervical cancer and their clinical significance
Journal of Third Military Medical University 2003;0(14):-
Objective To study the expressions of MCM5 and Ki67 in cervical intraepithelial neoplasia (CIN) and cervical cancer and their clinical significance. Methods Immunohistochemistry (S-P method) was used to detect the expressions of MCM5 and Ki67 in 50 CIN and 49 cervical cancer. Results The positive expression rate of MCM5 and Ki67 in normal cervical epithelium, CIN Ⅰ-Ⅱ, CIN Ⅲ and cervical cancer were 26.7%, 72.0%, 80.0%, 97.9% and 10.0%, 32.4%, 84.0%, 97.9% respectively. The positive expression rate of MCM5 was significantly different between CIN and cervical cancer (P
10.THE CHANGE IN FLOW DISTRIBUTION AND THE EFFECT OF POLYGONUM CUSPID ATUM ON RAT MICROVASCULATURE DURING HEMORRHAGIC SHOCK
Medical Journal of Chinese People's Liberation Army 1981;0(06):-
The flow distribution of leukocytes in the microvasculature of rat skeletal muscle during hemorrhagic shock was measured by Microcirculation Image Multiple Parameters Computer Analysis System (MIMPCAS). It was found that the change of leukocyte flow distribution had taken place in V3 during hemorrhagic shock as follows: central axial-flowing leukocytes moved slowly, marginated to the vessel wall then started to roll along the wall, and stuck to the endothelium at last. During transfusion blood flow became faster, sticking leukocytes were rushed out to be rolling along the vessel wall and accelerated to enter the central stream. Total leukocyte -endothelium contact time (TLECT), which is a quantitative index for leukocyte endothelium interaction, is calculated, and it was found that TLECT was prolonged in shock state. The results show that it is not enough to increase blood pressure and shear stress to liberate sticking leukocytes, and it is necessary to search for a new approach to decrease the adhesive force between leukocyte and endothelium. Polygonum cuspidatum may not only increase wall shear rate but also decrease the adhesive force.