Adult ; Aged ; Cervical Vertebrae ; injuries ; Diagnostic Errors ; Female ; Humans ; Male ; Middle Aged ; Whiplash Injuries ; diagnosis

Objective To evaluate the repeatability and stability of double antibody sandwich ELISA kit for micro-quantitative soluble complement receptor 1(sCR1) in human serum and to understand its practical application effect .Methods 50 patients with middle and advanced liver cirrhosis and 50 individuals undergoing physical examination served as the liver disease group and normal control group respectively .The mouse anti-human CD35 monoclone antibody ,rabbit anti-human sCR1 polyclonal antibody and goat anti-rabbit IgG labeled by horseradish peroxidase served as the envelope antibody ,sandwich antibody and detection antiboby .The purified recombinant human sCR1 protein served as the standard substance .The human serum micro-quantitative double antibody sandwich CR1 ELISA kit was established .Then the repeatability and stability tests were performed .Then the sCR1 protein level of two group of serum was detected by this kit .Results The linear range of double antibody sandwich ELISA for detecting human se-rum micro-quantitative sCR1 protein was 15 .60 -250 .00 ng/mL ;the regression equation of sCR1 protein concentration to absor-bance value was Y=112 .10X2 +18 .21X+1 .694(r2 =0 .998);in the repeatability test ,the intra-batch relative standard deviation (RSD) in high and low concentrations of standard substance detection value was 6 .20% and 7 .40% respectively ,the inter-batch RSD was 6 .70% and 7 .90% respectively ;in the stability test ,RSD was not more than 0 .01;the serum sCR1 expression level in the liver disease group was significantly higher than that in the normal control group (P<0 .01) .Conclusion The human serum double antibody sandwich ELISA kit for detecting human sCR1 has wide linear range ,good repeatability ,is easy to be stored and suitable for clini-cal and scientific research detection work .

Objective To explore the impact of cognitive training on cognitive function of the elderly in a community. Methods Ninety elderly people at and above sixty years old in a community of Shanghai were recruited in the study, and were divided into two groups: the cognitive training group and the control group.The cognitive training group conducted cognitive training for 12 weeks (24 times), a comprehensive training method incorporating cognitive training courses with Lumosity ( a brain functional exercise software) .The two groups were evaluated before and after the intervention with the Montreal Cognitive Assessment Scale ( MoCA) . Results Before the intervention, the scores of four fields ( i.e. visual space and executive function, naming, delayed recall, and directional force) and the total score for the cognitive training group were higher than the control group ( P <0 .05 );there was no statistically significant difference in other three fields ( i.e.attention, language ability and abstract ability) between the two groups (P>0.05).After the intervention, the scores of four fields (i.e.visual space and execu-tive function, attention, abstract, delayed recall) and the total score for the cognitive group improved, compared with the control group ( P<0 .05 ) . Conclusion Cognitive training could improve or maintain cognitive function for the elderly in the community.

Objective To explore the effect of nursing intervention on negative emotions and coping style for patients with retinal redetachmem.Methods Sixty patients with retinal reenactment were divided into two groups:the intervention group(n=30)and the control group(n=30)randomly.Routine nursing method were used in the control group while systemic nursing interventions,such as the intervention of disease-related knowledge, relaxed therapy, touch care therapy, intervention on families were used in the intervention group. The collected data by using the scales including the self-rating anxiety scale (SAS) , self-rating depression scale (SDS) and coping style questionnaires (CSQ). Results Negative emotions during preoperative period in the study group were less than that in the control group and in the coping style the study group was better than the control group. Conclusions The effective nursing intervention for the preoperative patients with retinal redetachment can alleviate the negative emotions such as anxiety, depression and psychological stress, and ensure the smooth progress of the re-operation.

OBJECTIVETo evaluate the diagnostic accuracy in the assessment of coronary artery bypass grafts using 64 multi-slice computed tomography angiography (64-MSCTA) technology.

METHODSThere were 228 patients post coronary artery bypass grafting (CABG) underwent 64-MSCTA from July 2005 to April 2007. Thirty-one patients with 82 bypass grafts performed coronary angiography (CAG) because of angina or grafts lesion showed by 64-MSCTA.

RESULTSAll bypass grafts could be visualized by 64-MSCTA. Thirteen bypass graft occlusions and fourteen significant stenosis were detected by 64-MSCTA and confirmed by CAG. One venous grafts distal anastomosis was missed and another one was miss diagnosed as stenosis. One false negative and one false positive CT-finding resulted in a sensitivity of 93.3%, a specificity of 98.1%, a positive predictive value of 93.3%, a negative predictive value of 98.1% and an accuracy of 97.1% for grafts stenosis. As to the grafts lesion, the sensitivity, specificity, positive predictive value, negative predictive value and accuracy for grafts occlusion were 96.4%, 98.1%, 96.4%, 98.1% and 97.6%, respectively.

CONCLUSION64-MSCTA demonstrates high diagnostic accuracy in the assessment of graft patency and suitable for the follow-up of patients post CABG.

Aged ; Coronary Angiography ; methods ; Coronary Artery Bypass ; Female ; Graft Occlusion, Vascular ; diagnostic imaging ; Humans ; Male ; Middle Aged ; Postoperative Complications ; diagnostic imaging ; Sensitivity and Specificity ; Tomography, Spiral Computed

OBJECTIVETo investigate the detrimental effects of hemorrhagic shock on the structure and function of mitochondria DNA (mtDNA) encoding cytochrome oxidase genes in intestinal epithelial cells.

METHODSWistar rats were used and divided into two groups: hemorrhagic shock group and control group. Hemorrhagic shock model of rats was utilized in this experiment. The mtDNA was extracted from the intestinal epithelial cells and amplified by polymerase chain reaction (PCR) with different primers of cytochrome oxidase (COX I, COX II and COX III). The products of PCR were directly sequenced.

RESULTSHemorrhagic shock could result in the point mutagenesis in mitochondrial genome encoding cytochrome oxidase (COX I and COX II). There were 4, 4, 22, 16, 35 point mutations in COX I from 5545 to 6838 bp in 5 shocked rats. There were five point mutations in COX II from 7191 to 7542 bp at the site of t7191c, t7212c, a7386g, a7483g, c7542g in 1 shocked rat. There was no mutation found in COX III.

CONCLUSIONSHemorrhagic shock could significantly induce the damage of the gene of cytochrome oxidase encoded by mtDNA.

Animals ; Base Sequence ; DNA, Mitochondrial ; genetics ; Electron Transport Complex IV ; genetics ; Intestinal Mucosa ; enzymology ; Male ; Mutation ; Polymerase Chain Reaction ; Rats ; Rats, Wistar ; Shock, Hemorrhagic ; enzymology ; genetics

Objective To explore the relationship between clinical ischemic events and carotid calcification detected by 64 slices CT angiography. Methods We retrospectively analyzed the carotid calcified plaques in 116 patients underwent the 64 slices CT angiography. The relatinnship between the carotid calcification and the clinical ischemic events was analyzed. Results A total of 377 plaques were detected and the incidence of carotid plaque calcification was 63.40%. Incidence of plaque calcification was significantly lower in patients with ages<50 years than that in patients with ages 51-59 years, 60-69 years and higher than 70 years (P=0.003, P=0.002, P=0.000, respectively). The incidence of plaque calcification in the common carotid artery was significantly lower than the carotid bifurcation (P=0.000) and the internal carotid artery (P=0.000). The incidences of calcification in the mild, moderate and severe degree of stenosis and occlusion were 46.54%, 33.33%, 26.67% and 0% respectively. The distribution of intraplaque calcium was similar between patients with ischemic event and non-isehemic event group. However, the incidence of calcification was significantly lower patients with ischemic event than that in patients without ischemie event (30.34% vs. 43.10%, P=0.013). Calcified plaque was negatively associated with ischemie event (β=-0.688, P=0.006). Conclusion 64 slices CT angiography can analyze the characterization of carotid plaque calcium.

OBJECTIVETo investigate the expression and its clinical significance of estrogen receptor (ERα) and phosphorylated estrogen receptor (p-ERα) in patients with hepatocellular carcinoma. The associations between ERα, p-ERα and IL-6 were also analyzed.

METHODSImmunohistochemistry was used to detect the expression of ERα, p-ERα and IL-6 in tumor tissues from 77 cases with hepatocellular carcinoma. The relations between ERα and the clinical pathological parameters and prognosis were also analyzed.

RESULTSThe positive rates of ERα, p-ERα and IL-6 in hepatocellular carcinoma were 39.0% (30/77), 45.4% (35/77) and 72.7% (56/77), respectively. The expression of ERα and p-ERα were negatively correlated with the expression of IL-6 (r=-0.468, P<0.01; r=-0.370, P<0.01, respectively). The positive rate of ERα in patients with tumor size≤5 cm, serum level of alpha-fetoprotein<400 µg/L, with complete encapsulation and non-microvascular invasion was significantly higher than those with tumor size>5 cm, serum level of alpha-fetoprotein≥400 µg/L, non-complete encapsulation and with microvascular invasion (all P<0.05). The overall survival rates of ERα-positive and ERα-negative patients were 66.7% and 23.4% (P<0.05). And the disease-free survival rates of ERα-positive and ERα-negative patients were 83.3% and 57.4% (P<0.05).

CONCLUSIONSThe tumor biological features of ERα-positive patients are better than that of ERα-negative patients. The role of ERα in hepatocellular carcinoma may be related to IL-6 level.

Adult ; Aged ; Carcinoma, Hepatocellular ; metabolism ; pathology ; Estrogen Receptor alpha ; metabolism ; Female ; Hepatitis B ; metabolism ; pathology ; Humans ; Interleukin-6 ; metabolism ; Kaplan-Meier Estimate ; Liver Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Phosphorylation ; Prognosis ; Proportional Hazards Models ; Young Adult

Objective:To investigate the clinical characteristics and survival analysis of myelodysplastic syndromes(MDS)with RUNX1 gene mutation.Methods:Clinical data of 177 newly diagnosed MDS patients admitted to the Department of Hematology,the Second Affiliated Hospital of Air Force Military Medical University from October 1,2015 to October 31,2022 were retrospectively analyzed.Gene mutation detection was performed by second-generation sequencing technology,and clinical characteristics and prognosis of patients with RUNX1 gene mutation were analyzed.Results:A total of 30 cases(16.95％)of RUNX1 gene mutations were detected,including 15 missense mutations(50.0％),9 frameshift deletion mutations(30.0％),4 splice site mutations(13.3％),1 insertion mutation(3.3％),and 1 nonsense mutation(3.3％).Patients with RUNX1 mutations had a median age of 68.5 years at diagnosis(range:62.25-78.50 years old).There were no significantly differences between RUNX1 mutations and wild type patients in age distribution,gender,peripheral blood white blood cell count,hemoglobin level,bone marrow and peripheral blood blasts ratio,IPSS-R cytogenetics,IPSS-R stage,etc.(P＞0.05).However,there were statistically significant differences in platelet count and whether complicated karyotype.Compared with patients without RUNX1 gene mutation,patients with RUNX1 gene mutation had lower platelet count(P=0.018),and were less likely to have complicated karyotype at initial diagnosis(P=0.01).Cox proportional hazards model analysis showed that when other co variates remained unchanged,the higher the platelet count,the better the survival of patients(HR=0.995,95％CI:0.990-0.999,P=0.036);In the IPSS-M prognostic stratification,keeping other covariates unchanged,the risk of progression or death of myelodysplastic syndrome was significantly lower in the medium to high-risk and low-risk groups compared with the high-risk group(HR=0.149,95％CI:0.031-0.721,P=0.018;HR=0.026,95％CI:0.003-0.234,P=0.001).Survival analysis showed that MDS patients with RUNX1 gene mutation had worse overall survival time(P＜0.001).Patients with RUNX1 mutation had worse OS than non-mutation patients in the early WHO group.RUNX1 mutation and IPSS-M risk stratification mean OS and mean LFS were worse in low-risk patients than in non-mutated patients.Conclusion:RUNX1 gene mutation is an adverse prognostic factor in MDS patients,especially in the IPSS-M prognosis stratification group of low-risk,medium-low risk,medium-high risk and WHO classification of early patients.

Objective　To observe the characteristics and rules of craniocerebral injury resulting from a high explosive shell to provide the bases for treating explosive injury. Methods　A total of 36 sheep were distributed at the distance 6 to 48 m away from the explosive center and the shell was exploded electrically at 7 m above the earth. At the same time, the velocity of fragments and shock wave pressure were determined. Gross and pathological observations were performed after injury. Results　Among all sheep with fragment injury, craniocerebral injury was 32%. Their immediate death rate was 75% and all died 6 h later. The incidence rates of penetrating wound and blind wound were 75% and 25% respectively. Pollution of wound track was heavy. The percentage of head lost was 50% in sheep and 50% of injured animal suffered from comminuted fracture of skull base. Bleeding was found extensively on the surface of the cerebrum, even medulla oblongata was involved. Hemorrhage, edema, rupture of small blood vessels and degeneration of neuron were found at the regions 4 cm away from the wound tract with light microscopy. Combined blast injury was found and occurred most often in the abdomen and limbs, both accounting for 62.5%, and combined thoracic injury was the third, up to 50%. All the animals of craniocerebral injury combined with lung blast injury. Conclusion　High explosive shells destroy cranium badly and extensively. Many skulls are lost and the cranial base is readily fractured. The wound track is heavily polluted. Combined injury is more often occurred.