Objective To study the relationship between insulinase activity of erythrocytes(EIA)and diabetic retinopathy(DR)in non insulin dependent diabetes mellitus (NIDDM) patients． Methods EIA,fasting plasma glucose (FPG),fasting plasma insulin (FINS) and glycosylated hemoglobin (HbA1c) were determined in 55 healthy controls,42 NIDDM patients with DR and 44 NIDDM patients without DR． Results EIA was lower,disease duration was longer,and FPG and HbA1c were higher in NIDDA patients with DR.EIA was decreased,duration of NIDDM was lengthened,FPG and HbA1c were increased in NIDDM patients with proliferative DR as compared with NIDDM patients with background DR．The correlation analysis showed,in NIDDM patients with DR,EIA was inversely correlated with FPG,HbA1c and duration of NIDDM． Conclusion Insulinase may play certain role in the onset and development of DR． (Chin J Ocul Fundus Dis,1998,14:132-134)
The implantable axial blood pump, driven by external electromagnet, is studied recently. It oscillats when it is running because of the elastic implanted environment and driving force disequilibrium, etc. In this paper, a model of single erythrocyte in vibrated flow field was built to simulate the deformation and force of the erythrocyte. By using the mechanical injury principle of blood in blood pump, we studied the injury of a single erythrocyte resulted from oscillating boundary flow field. The research results indicated that the shape of the erythrocyte, force and velocity field nearby, which are affected by oscillating boundary flow field, all cause injury to the erythrocyte. All the researches shown in the present paper are expected to provide theoretical foundation for lightening hemolysis by the blood pump.
ObjectiveTo investigate the diagnostic value of tuberculosis T cell spot test (T-SPOT.TB) and erythrocyte sedimentation rate (ESR) test in the diagnosis of simple pulmonary nodules in Xinjiang.MethodsA retrospective analysis of 72 patients with asymptomatic simple pulmonary nodules in the Department of Thoracic Surgery, the First Affiliated Hospital of Xinjiang Medical University from October 2017 to July 2019 was performed. According to the pathological results, the patients were divided into a tuberculoma group [n=23, including 14 males and 9 females, aged 37-84 (56.91±12.73) years] and a lung cancer group [n=49, including 31 males and 18 females, aged 34-83 (61.71±10.15) years]. The predictive value of T-SPOT.TB and ESR results for the diagnosis of simple pulmonary nodules was evaluated.ResultsThe positive rate of T-SPOT.TB in the tuberculoma group (69.60%) was higher than that in the lung cancer group (42.90%) (χ2=5.324, P=0.021), with a sensitivity of 69.56% and specificity of 57.14%; the positive ESR was 47.80% in the tuberculoma group and 59.20% in the lung cancer group, and no statistical difference was found between the two groups (χ2=0.981, P=0.322), with a sensitivity of 47.82% and specificity of 40.81%; the area under receiver operating characteristic curve (AUC) was 0.618, the 95% confidence interval of AUC was (0.479, 0.758), and the Youden’s index was 0.267 with a sensitivity of 69.60% and specificity of 57.10%. Difference in the T-SPOT.TB and ESR test results was statistically significant (χ2=4.986, P=0.026), but the correlation between the tests was weak with a Pearson contingency coefficient of 0.199. ESR results in patients with different ages were statistically different (χ2=7.343, P=0.025), but the correlation between age and ESR results was weak with a Pearson contingency coefficient of 0.239; T-SPOT.TB results in patients with different ages were not statistically different (χ2=0.865, P=0.649), and the correlation between age and ESR results was weak with a Pearson contingency coefficient of 0.084.ConclusionThe diagnostic value of T-SPOT.TB and ESR tests is small in the diagnosis of simple pulmonary nodules.
ObjectiveTo investigate the relationship between the red blood cell distribution width (RDW) and the severity of acute exacerbation of bronchiectasis in elderly patients.MethodsThe clinical data of 216 elderly patients with acute exacerbation of bronchiectasis admitted from January 2015 to October of 2018 were analyzed retrospectively. The severity of acute exacerbation of bronchiectasis in the elderly was evaluated by bronchiectasis severity index (BSI) score. Meanwhile, 50 elderly people receiving qualified medical examination were collected as a healthy control group in the same period. The distributions of BSI score, RDW, procalcitonin (PCT), neutrophil percentage (NEU%) and C-reactive protein (CRP) were described in the patients with different risk degree. The severity of acute exacerbation of bronchiectasis in the elderly was evaluated by BSI. The patients were divided into three groups by BSI score: a low risk group, a middle risk group, and a high risk group. The indexes were described including the distribution of stratified BSI score, RDW, PCT, NEU%, CRP at different risk levels. The correlation of each index was analyzed by Spearman correlation. The threshold value of RDW was calculated by general linear regression, and the influencing factors of BSI score were analyzed by multivariate linear regression analysis.ResultsThe higher the risk stratification, the higher the BSI score, RDW, PCT, NEU% and CRP were. RDW was positively correlated with PCT, NEU% and CRP (r values were 0.425, 0.311, 0.177, respectively, P<0.05). BSI score was positively correlated with RDW, PCT, NEU%, and CRP (r values were 0.425, 0.394, 0.650, 0.578, respectively, P<0.05). RDW was positively correlated with PSI score (r=0.425, P<0.05). The thresholds of RDW were 11.45% and 14.03%. Multiple linear regression showed that RDW, PCT, NEU% and CRP were all influential factors of BSI score and explained 52.3% of the total mutation rate.ConclusionRDW is related to the severity of acute exacerbation of bronchiectasis in the elderly, and can predict the severity of acute exacerbation of bronchiectasis in the elderly.
ObjectiveTo understand the adverse effects of perioperative red blood cells (RBC) transfusion on patients after pancreaticoduodenectomy (PD) so as to provide ideas for reducing postoperative complications and improving prognosis. MethodThe relevant literatures at home and abroad in recent years about studies of perioperative RBC transfusion on postoperative complications (focusing on pancreatic fistula and infection) and prognosis of patients with PD were reviewed. ResultsThe rates of postoperative complications and perioperative RBC transfusion after PD were still higher. The perioperative RBC transfusion might increase the rate of postoperative complications, promote early tumor recurrence, and shorten the disease-free survival and overall survival. At present, with the progress of technology, the perioperative RBC transfusion rate was decreasing. At the same time, with the accelerated development of new blood transfusion technologies such as freeze-drying and refrigeration, the decline rate was still expected to be increased. ConclusionsPerioperative RBC transfusion in PD might have adverse effects on postoperative complications and prognosis. Although further research is still needed to explore its necessary connection, this adverse effect needs to be paid enough attention in clinical practice. Early identification of risk factors, strict transfusion indications and minimizing amount or concentration of RBC transfusion might help to avoid or reduce RBC transfusion and minimize its adverse effects.
Objective To investigate the effects of recombinant adenovirus-mediated co-transfection of carcinoembryonic antigen (CEA) gene and erythropoietin (EPO) gene on promoting hematopoietic stem cells directly producing erythrocyte vaccine against colon cancer. Methods The expression adenovirus vectors carrying CEA and EPO or green fluorescent protein (GFP) gene were constructed respectively, and recombinant adenovirus carrying CEA, EPO or GFP were packaged and produced respectively. The bone marrow-derived mesenchymal stem cells (MSCs) of mice were isolated and cultured in vitro by anti-CD117 magnetic bead separation, and were transfected with CEA (CEA group), EPO (EPO group) or GFP (blank vector group), co-transfected with CEA and EPO (CEA-EPO group). The expressionsof CEA and EPO gene and its protein after transfection in supernatant fluid of culture were detected by realtime-PCR and Western blot method in each group. We had checked and obtained the vaccine with co-transfection of CEA gene and EPO gene by cell red line marker antibody CD71 and GPA, then we carried on experiments with the vaccine in vitro and in vivo. There were 4 groups in our trail: blank vector group, CEA group, EPO group, and CEA-EPO group. Results We had successfully gathered the hematopoietic stem cells, flow cytometry analysis result showed that there were significant differences before and after purification for positive selected samples (P<0.05). The expressions of double genes (CEA-EPO gene) and protein showed CEA-EPO gene were successfully transfected into the hematopoietic stem cells. We had confirmed erythrocyte vaccine with co-transfection of CEA and EPO gene by antibody CD71 and GPA with flow cytometry. The monocytes cytotoxicity on colon cancer cell line CT26 showed that lysis of target cells of CEA-EPO group were higher than those of other 3 groups when in proportion of 40∶1 (P<0.05). In the experimentation of neoplasma format, the volume of tumor and mortality were smaller or lower, but survival time was longer of CEA-EPO group in2 weeks after treatment (P<0.05). Conclusions The erythrocyte vaccine with co-transfection of CEA gene and EPO gene has efficient anti-tumor effects on colon cancer. Not only can promote hematopoietic stem cell directly producing erythrocyte vaccine, but also can produce tumor antigen vaccine against colon cancer.
Objective To investigate the risk factors of perioperative red blood cells transfusion for coronary artery bypass grafting (CABG) surgery. Method We retrospectively analyzed the clinical data of 534 patients underwent CABG in our hospital from January to March 2014 year. Those patients were divided into two groups:an on-pump coronary artery bypass grafting group (on-pump group) and an off-pump coronary artery bypass grafting group (off-pump group). There were 185 males and 54 females with a mean age of 59.1±9.4 years in the on-pump group. There were 233 males and 62 females with a mean age of 60.3±8.5 years in the off-pump group. Preoperative data, the relative parameters of extracorporeal circulation, the quantity of red blood cells transfusion of those two groups were compared. risk factors associated with red blood cells transfusion were evaluated by multivariate logistic regression analysis. Results The risk factors of perioperative red blood cells transfusion were age (OR=1.04, 95% CI 1.02-1.07, P=0.001) , weight (OR=0.95, 95% CI 0.93-0.97, P<0.001) , smoking (OR=0.61, 95% CI 0.39-0.94, P=0.027) , preoperative level of HCT (OR=0.90, 95% CI 0.85-0.96, P=0.001) and cardiopulmonary bypass (CPB) (OR=4.90, 95% CI 3.11-7.71, P<0.001) . During CPB, the nadir hemoglobin (nHb) (OR=0.63, 95% CI 0.47-0.84, P=0.002) was the only independent risk factor of red blood cell transfusion. Conclusions Age, weight, non-smoking, preoperative level of HCT, CPB are the risk factors for patients underwent CABG perioperatively and the lowest level of Hb in CPB is an independent risk factor of perioperative red blood cells transfusion.