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【Objective】 To establish a blood transfusion adverse event management system and apply it to adverse events management, so as to enhance the ability to identify and process reports as well as prevent adverse events. 【Methods】 According to the errors during the whole process of blood transfusion, the management information system of blood transfusion adverse events was established, and the data of adverse transfusion reactions and adverse transfusion events from 2020 to 2022 were collected according to the system requirements. The system monitoring data and statistical analysis were used to analyze the causes of errors in each link of blood transfusion, sort the incidence of each department, focus on supervising the departments with high frequency of adverse events, and propose effective rectification. 【Results】 The management system counted 51 cases of adverse reactions. The incidence of adverse reactions of plasma (43.1 %, 22/51) was higher than that of red blood cells (39.2 %, 20/51), and the number of allergic reactions was slightly higher than that of febrile non-hemolytic transfusion reaction. Among the 628 cases of adverse transfusion events, blood transport, inbound and storage (TS-A) errors accounted for the highest proportion of 46.2% (290/628), 20.9% (131/628) in post-transfusion disposal and evaluation (TS-G) and 15.8% (99/628) in pre-transfusion evaluation and transfusion application (TS-B). TS-A12 accounted for 63.8 % (185/290) in TS-A errors, which was mainly due to plasma leakage caused by extrusion during transport and the expiration of red blood cells caused by insufficient blood inventory management. TS-B errors mainly focus on the failure to fully assess the bleeding tendency of patients before surgical system surgery, resulting in no or insufficient preoperative blood preparation. Most of the TS-G errors were unqualified medical record. 【Conclusion】 Blood transfusion adverse event management system can help to identify and prevent the occurrence or recurrence of adverse events, formulate targeted rectification and preventive measures, and improve the haemovigilance ability.
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Objective To establish a novel method by integrating immunomagnetic bead enrich-ment with immunochromatography for the detection of influenza A virus. Methods The immunomagnetic beads were prepared by using EDC/NHS method and then coupled with monoclonal antibodies against influ-enza A virus. A direct immunomagnetic beads-based immunochromatography for the detection of influenza A virus was developed by using double-antibody sandwich method and immunochromatography, which was fur-ther combined with immunomagnetic separation to establish the novel integrated method of immunomagnectic bead enrichment and immunochromatography. Clinical throat swab samples collected from patients with influ-enza A virus infection and healthy subjects were analyzed by the novel method and the results were compared with those by using the conventional colloidal gold immunochromatography to evaluate the specificity, sensi-tivity and positive coincidence rate of this established method. Results The direct immunomagnetic beads-based immunochromatography and the colloidal gold immunochromatography showed no significant differences in specificity and sensitivity and could be used to identify influenza A virus-positive samples with cycle threshold ( Ct) values less than or equal to 22 obtained by real-time PCR assay. The integrated method could identify positive samples with Ct values less than or equal to 28, indicating that the novel method was more sensitive. Conclusion The novel method by integrating immunomagnetic bead enrichment with immunochroma-tography was successfully established and suitable for the rapid and on-site detection of influenza A virus.
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Objective To investigate the effect of curcumin (Cur)on acute lung injury (ALI) induced by one-lung ventilation (OLV)in mice.Methods Sixty C57BL/6J mice were randomly alloca-ted into six groups (n =10):two-lung ventilation group (TLV group),OLV group,OLV+Cur pre-treated with 50 mg/kg group (Cur50 group),100 mg/kg group (Cur100 group),1 50 mg/kggroup (Cur1 50 group)and200 mg/kg group (Cur200 group).Peak and averaged airway pressure (Ppeak and Paw)of mice in each group were recorded.Mice were euthanized and the end of experiment,and left lung tissue was excised.Wet lung weight to dry lung weight (W/D)and total lung water content (TLW)were tested.Pathological changes of lung tissue were observed under light microscope,and changes of ultrastructure of lung tissue were observed by transmission electron microscope.Index of quantitative evaluation for alveolar damage (IQA)and lung injury scores were tested under light mi-croscope.The expression of c-Jun N-terminal kinase (JNK)mRNA and phosphorylated JNK (p-JNK)protein were detected respectively by reverse transcription-polymerase chain reaction (RT-PCR)and Western Blot.Apoptosis index (AI)of lung tissue was determined by terminal dexynucle-otidyl transferase(TdT)-mediated dUTP nick end labeling (TUNEL)method.Results There was no statistical significance at Ppeak and Paw of rats in each group.Compared to TLV group,the expres-sion of JNK mRNA and p-JNK protein were all significantly increased (P <0.05)in OLV group,and W/D,TLW,IQA,lung injury scores and AI were all notably higher (P <0.05);morphological and ultrastructural injuries in lung tissue were notably occured in OLV group.Compared to OLV group,the expression levels of JNK mRNA and p-JNK protein were decreasingly lower (P <0.05 )in the groups of Cur100,Cur1 50 and Cur200,W/D,TLW,IQA,lung injury scores and AI were also de-creased (P <0.05);morphological and ultrastructural injuries in lung tissue were gradually alleviated in the groups of Cur100,Cur1 50 and Cur200.However,there was no statistical significance in the in-dexes mentioned above between Cur50 group and OLV group.Conclusion Cur at doses of 100 to 200 mg/kg has protective effects on lung against OLV injury in mice,which may be related to inhibition of pneumocyte apoptosis induced by JNK.
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Objective To investigate the effects of dexmedetomidine pre-treatment on pneumonocyte apoptosis and CCAAT/enhancer binding protein homologous protein (CHOP) in acute lung injury (ALI) induced by ischemia/reperfusion (I/R) during orthotopic liver transplantation in rats.Methods Forty adult male Sprague-Dawley (SD) rats were randomly divided into four groups by random number table method: sham operation group, I/R model group, dexmedetomidine low dose group and dexmedetomidine high dose group, 10 rats per group. Hepatic artery was ligated and cut off by two cuff method, and the portal vein was completely opened after donor liver transplanted into the recipient, thus, a hepatic I/R model was established. The perihepatic ligaments of rats were just separated after laparotomy in sham operation group and no other special treatment was performed. One hour prior to I/R, dexmedetomidine at a dose of 2.5μg·kg-1·h-1 and 5.0μg·kg-1·h-1, respectively, were pumped intravenously and finished within 1 hour in the rats of low dose group and high dose group. After experiment, the lung tissue was taken, and the lung wet/dry weight (W/D) ratio was determined. Pathological changes of lung tissue were observed and alveolar damage index of quantitative assessment (IQA) was tested by light microscope, and changes of ultrastructure of lung tissue were observed by transmission electron microscope. The mRNA and protein expressions of CHOP were detected respectively by reverse transcription-polymerase chain reaction (RT-PCR) and Western Blot. The apoptosis in lung tissue was determined by terminal-deoxynucleotidyl transferase mediated nick end labeling (TUNEL) method and apoptosis index (AI) was calculated.Results Compared to sham operation group, the lung W/D ratio (4.94±0.84 vs. 2.29±0.54), IQA [(40.52±5.15)% vs. (4.55±1.85)%] and AI [(36.57±5.85)% vs. (2.85±0.95)%] in I/R model group were significantly higher (allP < 0.01); remarkable injury of lung tissue was confirmed by light microscope and transmission electron microscope in the I/R model group. Compared to I/R model group, the W/D ratio (3.29±0.85, 2.68±0.78 vs. 4.94±0.84), IQA [(23.69±2.62)%, (15.86±3.61)% vs. (40.52±5.15)%] and AI [(25.73±3.71)%, (14.66±2.61)% vs. (36.57±5.85)%] in dexmedetomidine low and high dose groups were markedly lower (allP < 0.01); under light and transmission electron microscopes, the injury of lung tissue in these two dose groups was notably alleviated. There was a large amount of apoptotic cells of pulmonary vascular endothelium and alveolar epithelium in I/R model group, while the cell apoptosis was distinctly decreased in dexmedetomidine low and high dose groups compared to that in model group. Compared to sham operation group, the expressions of CHOP mRNA [absorbance (A) value: 0.96±0.18 vs. 0.43±0.08] and protein (gray scale: 2.79±0.74 vs. 1.02±0.27) were significantly higher in I/R model group (bothP < 0.01). Compared to I/R model group, the expressions of CHOP mRNA (A value: 0.69±0.13, 0.56±0.12 vs. 0.96±0.18) and protein (gray scale: 1.96±0.58, 1.34±0.49 vs. 2.79±0.74) were significantly lower in dexmedetomidine low and high dose groups, the decrease in dexmedetomidine high dose group being more marked (allP < 0.01).Conclusion The pretreatment of dexmedetomidine can protect lung tissue against I/R injury during liver transplantation in rats, and the mechanism may be related to the suppression of CHOP activation and alleviation of lung tissue cell apoptosis.
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Objective To investigate the changes of amplitude of low frequency fluctuation (ALFF) of the resting state fMRI in cognitively impaired Parkinson' s disease patients and discuss its underling neurophysiological mechanism.Methods Blood oxygen level-dependent low-frequency amplitude (ALFF) in resting-state functional magnetic resonance imaging were calculated in 16 healthy controls(HC) and 29 idiopathic Parkinson's disease patients (16 of which were patients with cognitive normal,PDCN and 13 with cognitive impairment,PDCI).The brain regions showing increased and decreased ALFF in patients were demonstrated by comparing normal subjects with 2-sample t-test with threshold of P＜ 0.05 and the analysis of the relationship between the different regions of the brain activity and cognitive function tests scores were also analyzed.Results Compared with PDCN,the PDCI patients showed decreased activity in the caudate nucleus (-3,9,12),occipital lobe (0,-78,-15) and medial temporal lobe (42,9,-27) and increased activity in the superior frontal gyrus (9,63,24).PDCI patients showed increased activity mainly in the precuneus and inferior parietal lobules compared with controls.Additionally,the regions with ALFF changes had significant correlations with the cognitive performance of patients as measured by Montreal cognitive test(Beijing Version) and neuropsychological tests (including memory,attention,visuospatial functions and executive function).Conclusion The results demonstrate that there is a specific pattern of intrinsic activity in PDCI providing insights into neurophysiological mechanisms of the Parkinson's disease dementia.
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@#Objective To determine the renal effects of chronic exercise training and enalapril in uninephrectomized anti-Thy-1 nephritis Wistar rats (Thy-1-Crf). Methods 5-week-old Wistar rats were subjected to uninephrectomy. Anti-Thy-1 nephritis was induced by injecting 200 μg/kg OX-7 intravenously once a week for four times. They were divided into 3 groups: non exercise; moderate exercise with treadmill running(20 m/min, 0 grade-incline for 60 min); moderate exercise with an angiotensin converting enzyme(ACE) inhibitors, enalapril (2 mg/kg/day i.p.) for 8 weeks.Results Exercise did not suppress the increase in proteinuria in Thy-1-Crf. However, enalapril significantly decreased systolic blood pressure(SBP), urinary protein excretion(UpE), and index of glomerular sclerosis (IGS) in Thy-1-Crf. Conclusion The renal protective effects of moderate exercise in models of renal failure differ depending on the etiology of renal failure. It also suggests that enalapril can widen the acceptable range of exercise intensity in Thy-1-Crf.