Objective To analyse the correlation of apolipoprotein E genotype and Alzheimer's disease(AD) in old population in Urumqi.Methods The polymerase chain reaction and restriction fragment length polymorphism(PCR-RFLP) techniques were used to detect the distribution of genotype, gene frequency of ApoE alleles in 60 cases with sporadic AD and 90 normals as control.Results The frequency of ApoE?2, ApoE?3, ApoE?4 was 6.67%, 75.83% and 17.50% respectively in AD group, while in control group, it was 13.33%, 79.45% and 7.22% respectively. The frequency of ApoE?4 allele in AD group was higher than that in control group( P

Objective To evaluate the effect of gender matching on the outcomes of livingdonor renal transplantation.Methods A total of 419 cases of living-donor renal transplantation in our center were divided into male-donor-male-recipient (MDMR) group,male-donor-female-recipient (MDFR) group,female-donor-male-recipient (FDMR) group,female-donor-female-recipient (FDFR)group.The outcomes including graft and patient survival,acute rejection and renal function were analyzed retrospectively.Results Compared to MDMR group,MDFR group and FDFR group had lower Scr [(80.7±17.9),(87.4±21.9) μmol/L vs (120.3±72.5) μmol/L,all P ＜ 0.05] and uric acid (UA) [(318.1 ± 86.4),(303.5 ± 66.9) μmol/L vs (358.4 ± 77.8) μmol/L,P ＜ 0.05] 6 months after operation.Compared to MDFR group,FDMR group had higher Scr[(117.7±27.4) μmol/L vs (80.7±17.9) μmol/L,P ＜ 0.01],UA [(371.0±92.4) μmol/L vs (318.1±86.4) μmol/L,P ＜ 0.05] and lower glomerular filtration rate (GFR) [(70.4± 17.8) ml/min vs (79.6± 18.9) ml/min,P ＜ 0.05].Compared to FDMR group,FDFR group had lower Scr [(87.4±21.9) μmol/L vs (117.7±27.4) μmol/L,P ＜ 0.01] and UA [(303.5±66.9)μmol/L vs (371.092.4) μmol/L,P＜ 0.01].Compared to MDFR group,FDFR group showed lower GFR [(72.4±25.3) ml/min vs (82.7± 18.7) ml/min,P ＜ 0.05] 1 year after operation.Compared to MDMR group,FDFR group showed lower UA [(322.9±69.7) μmol/L vs (376.0±66.2) μmol/L,P ＜ 0.05] 2 years after operation.Compared to FDMR group,FDFR group showed lower Scr [(88.7 ±27.0) μmol/L vs (112.7±27.8) μmol/L,P ＜ 0.05] and UA [(318.3 ±61.2) μmol/L vs (396.2± 100.3) μmol/L,P ＜ 0.05] 3 years after operation.5 years after operation,there were no significant differences in above indexes,the incidence of slow graft function,acute rejection and survival of graft and patient among groups.Conclusions Male recipients of female donors have the worst renal function while female recipients have better outcomes after operation.

This study sought to reveal the difference of brain functions at resting-state between subjects with sub-health and normal controls by using the functional magnetic resonance imaging (fMRI) technology. Resting-state fMRI scans were performed on 24 subjects of sub-health and on 24 healthy controls with gender, age and education matched with the sub-health persons. Compared to the healthy controls, the sub-health group showed significantly higher regional homogeneity (ReHo) in the left post-central gyrus and the right post-central gyrus. On the other hand, the sub-health group showed significantly lower ReHo in the left superior frontal gyrus, in the right anterior cingulated cortex and ventra anterior cingulate gyrus, in the left dorsolateral frontal gyrus, and in the right middle temporal gyrus. The Significant difference in ReHo suggests that the sub-health persons have abnormalities in certain brain regions. It is proved that its specific action and meaning deserves further assessment.
Brain ; physiology ; physiopathology ; Brain Mapping ; Case-Control Studies ; Cerebral Cortex ; Frontal Lobe ; Gyrus Cinguli ; Humans ; Magnetic Resonance Imaging ; Parietal Lobe

Objective To observe the MRI findings of normal pancreas in piglets. Methods Eight healthy piglets underwent MR examination, and the morphology, size, signal intensity of pancreas were observed. After MR imaging, all piglets were abdominally incised to observe the anatomy of pancreas and pancreatic adjacent structures. The opening of both common bile duct and pancreatic duct were detected during operation. Two piglets were sacrificed after operation and the whole pancreases were dissected for anatomic research. Results The pancreas of piglets was composed of three parts: right lobe, median lobe and left lobe. All the lobes were displayed clearly on MRI. The signal intensity of pancreas was higher than that of liver and spleen on T1WI, whereas lower than that of liver and spleen on T2WI. On MRCP, pancreatic duct was not presented, whereas the common bile duct could be seen clearly. The opening of common bile duct located at superior part of duodenum (nearby the pylorus) and the opening of pancreatic duct situated at duodenal papilla corresponding to pancreatic right lobe. Conclusion MRI can show the pancreas of piglets very well. The morphology of pancreas and features of common bile duct conjunction with pancreatic duct in piglet are different from those in human.

Objective To summarize the therapeutic effects and feasibility of endovascular repair for infec-tious aortic aneurysms (IAA). Methods The clinical data of seven cases with IAA treated with endovascular repair between May 2006 and July 2007 were retrospectively analyzed. Results Technical success was achieved in all ca-ses. Complete exclusion of the aneurysms was proved by DSA and no endoleaks appeared. No major complications oc-curred. All patients were followed up for 8 to 22 months with no evidence of aneurysms enlargement, stent-grafts mi-gration,endoleak and infection. Conclusion Endovascular repair of infectious aortic aneurysm is a minimally inva-sire, safe and feasible technique and provides good short-term results.

Objective To investigate the expression of circulating microRNA (miRNA) of rats with hypobaric hypoxia‐induced pulmonary hypertension (HPH) .Methods Commercial rat miRNA microarray was employed to detect and analyze the circulating miRNA profile in the serum samples of Sprague‐Dawley rats with hypobaric hypoxia‐induced HPH and controls .Furthermore ,differentially expressed candidate circulating miRNAs between HPH and control groups were validated by Real‐time quantitative PCR based on the case‐control study ,and receiver operating characteristic curve (ROC ) analysis was used to test the performance of four differentially expressed circulating miRNAs in discriminating HPH and control groups .Results Compared with those in the control group ,13 upregulated miRNAs and 10 downregulated miRNAs were identified in hypobaric hypoxia‐induced HPH rats by using miRNA microarray . And differentially expressed miR‐451 , miR‐505 , let‐7d and miR‐214 were validated by using RT‐PCR .ROC analysis showed that the area under the curve of miR‐451 ,miR‐505 and let‐7d was 0 .979 ,0 .938 and 0 .993 in discriminating HPH and control groups ,respectively .Conclusion The aberrant expression of circulating miR‐451 ,miR‐505 and let‐7d in serum may be correlated with the pathogenesis of HPH .

Objective To investigate smoking status,knowledge of smoking hazards,attitude of tobacco control and skill of assisting smoking cessation of the staff in a teaching hospital in Chongqing and to provide references for the further construction of‘smoking-free hospital’. Methods General investi-gation was taken on the staff in a teaching hospital in Chongqing with a self-designed questionnaire. Main contents of questionnaire include:social demographic information,smoking status,awareness of tobacco hazard,willingness and methods of tobacco control,etc. All the data were inputted with software Epidata 3.1 and were analyzed with SPSS 13.0. Results The total smoking rate was 9.65%,with 30.49%for male, 2.75%for female and 12.50%for clinician. The age distribution of smoking staff was described as follow-ing:91.97% being under 50 year-old and more than 50.00% being 20-35 year-old. 52.43% of the surveyed did not know Framework Convention of Tobacco Control of WHO . Relatively ,most of the surveyed only knew well the relationship between respiratory diseases and tobacco use and the relation-ship between fetal abnormalities and tobacco use. 84.99%of the surveyed agreed with outdoor-smoking policy;83.56%of the surveyed claimed that they had discouraged smoking behaviors in public at various extents,14.20%of the surveyed agreed that assisting the public in smoking cessation was one of the aims of constructing‘smoking-free hospital’;70.00%clinicians claimed routinely inquiring and noting smok-ing status of patients, which was better than nurses and medical technicians;almost 30.00%clinic staff did not know quitting smoking drugs at all,approximately 70.00%clinic staff claimed a lack of confidence in smoking control and approximately 70.00% clinicians and nurses did not recommend pro-fessional methods of smoking cessation in practice. Conclusions Smoking staff in the teaching hospital are almost younger people,which is an alarm of the urgent need for tobacco control education. Most staff reach a consensus on keeping smoking-free environment in hospital,but they do not sufficiently acknowledge their social responsibility for tobacco control,and also there is a distance before they can serve as a smok-ing cessation assistant. Tobacco control must be incorporated in long-term mechanism of hospital con-struction. There are three steps in the construction of smoking-free hospital:①creating a smoking-free en-vironment in hospital;②encouraging patients to quit smoking and providing professional service of smoking cessation;③making a positive effort on social tobacco control and advocating smoking cessation in public.

Objective:To summarize the early and intermediate outcomes of second-grade false-lumen endovascular occlusive repair (FLEVOR) for aortic dissection.Methods:The clinical data of 12 patients undergoing second-grade FLEVOR after proximal repair of aortic dissection at our center from Aug 2016 to Aug 2019 was retrospectively analyzed.Results:The mean age was (51.3±14.9) years old. Four patients received open repair due to Stanford type A aortic dissection previously, the other 8 patients underwent thoracic endovascular aortic repair for Stanford type B aortic dissection. The time to the proximal repair varied from 3 months to 16 years. The technical success rate was 100%. Visceral ischemia, early spinal cord ischemia and in-hospital death did not occur perioperatively. The mean follow-up time was 16.7 months. Persistent false lumen perfusion was found in 3 patients, complete thrombosis of false lumen was achieved in the other 8 patients. The maximum diameter of abdominal aorta decreased in 8 (72.7%) patients.Conclusions:FLEVOR could block the blood flow from the false lumen and induce the thrombosis of false lumen, which promotes the aortic remodeling. Meanwhile, FLEVOR could protect the blood supply of spinal cord and viscera, and reduce the risk of type Ⅱ endoleaks.

OBJECTIVETo explore the immune response of silicotic rats to sheep red blood cells(SRBC).

METHODSSilicotic rats were immunized with SRBC by tracheal instillation(Group 1) or intraperitoneal injection (Group 2), and non-silicotic rats were immunized by tracheal instillation as normal control(Group 3). The levels of serum hemolytic index(HC50) were measured on 7, 12, 20, 25, and 32 days after primary immunization and 5, 12, 15 days after the second immunization. Special anti-SRBC IgG was measured with ELISA(A490 nm) on 12, 20, 25, 32 days and 5, 12, 15, 27 days respectively. Delayed-type hypersensitivity(DTH) to SRBC was measured 20 days after second immunization and DTH reaction was determined at 24, 48, 72, and 96 h after administration. Total cell count and cell populations in the bronchoalveolar lavage fluid(BALF), lung associated lymph node(LALN) and spleen weight, special IgG secreted from spleen cells were measured at the end of the experiment.

RESULTSThe HC50 of Group 1(47.4 +/- 1.0, 52.2 +/- 4.6, 31.1 +/- 11.9, 43.8 +/- 3.5, 33.6 +/- 16.8, 49.0 +/- 2.3, 92.9 +/- 20.2, 87.7 +/- 5.2) were statistically higher than those of Group 3(40.4 +/- 10.6, 2.8 +/- 2.5, 0.8 +/- 0.6, 6.6 +/- 5.8, 1.4 +/- 0.1, 36.5 +/- 16.5, 53.0 +/- 33.2, 2.6 +/- 2.2). The special anti-SRBC IgG response in Group 1(1.67 +/- 0.19, 1.98 +/- 0.36, 1.12 +/- 0.50, 1.38 +/- 0.30, 2.75 +/- 0.15, 2.60 +/- 0.28, 2.86 +/- 0.10, 2.50 +/- 0.20) were much stronger than those in Group 3 (0.59 +/- 0.30, 0.56 +/- 0.21, 0.21 +/- 0.16, 0.22 +/- 0.01, 0.81 +/- 0.25, 0.74 +/- 0.25, 0.69 +/- 0.26, 1.38 +/- 0.41). Furthermore, the results of DTH showed positive response and the ratios for diameter of skin rash > 5 mm at 24, 48, 72, 96 h were 16/16, 16/16, 16/16, 15/16 respectively in Group 1, while those in Group 3 were 8/15, 1/15, 1/15, 1/15 respectively. Total cell count in the BALF, LALN and spleen weight, and special IgG secreted from spleen cells in Group 1 were higher too. Group 2 expressed almost of the same but with mild immunologic responses as Group 1.

CONCLUSIONSilicosis-induced extremely strong DTH and over-response of humoral immunity to some antigens may contribute to the likelihood of silicosis complicated with tuberculosis.

Animals ; Erythrocytes ; immunology ; Hypersensitivity, Delayed ; etiology ; Immunization ; Immunoglobulin G ; blood ; Rats ; Sheep ; Silicosis ; immunology

Objective To study the influences on the production of major inflammatory cytokines after co-culturing macrophages with human umbilical vein endothelial cells ( HUVECs) that were infected with dengue virus type 2 (DENV-2). Methods Density gradient centrifugation was used to isolate periph-eral blood mononuclear cells ( PBMC) from concentrated human leukocytes. Adherent monocytes in culture flasks were obtained and stimulated with macrophage colony-stimulating factor ( M-CSF) to prepare macro-phages. The purity of CD14+CD11b+ cells was measured by flow cytometry. Changes in the expression of NS1 at mRNA level in HUVECs were detected by real-time PCR following DENV-2 infection. DENV-2-in-fected HUVECs were co-culture with macrophages in Transwell chambers. A control group was set up by pre-treating HUVECs with sphingosine-1-phosphate (S1P) type 1 (S1P1)-specific receptor agonist CYM-5442 for 24 h to remove the drug before infection and then co-culturing the infected cells with macrophages. Real-time PCR was used to detect the expression at mRNA level of IL-6 and IL-8 in HUVECs and IL-6, IL-8, TNF-α and IL-1β in macrophages. A double-antibody sandwich ELISA was used to detect the expression of above cytokines in culture supernatants. Results After HUVECs were infected with DENV-2, expression of NS1 gene at mRNA level gradually increased to the peak at 24 h (2. 66±0. 53, P<0. 05) and then de-creased. The purity of macrophages detected by flow cytometry was (89. 16±2. 07) ％. Expression of IL-6 and IL-8 at mRNA level in DENV-2-infected HUVECs was up-regulated. The peak values reached at 24 h of IL-6 and IL-8 expression were 16. 10±0. 17 and 29. 76±0. 58, while the expression levels at 24 h in the un-infected group were 1. 46±0. 67 and 1. 60±0. 54, respectively. Expression of IL-6, IL-8, TNF-αand IL-1βat mRNA level in DENV-2-infected macrophages was increased significantly. The levels of IL-6, IL-8, TNF-αand IL-1β expression at 24 h were 45. 82±3. 72, 52. 34±1. 69 (12 h), 8. 94±1. 75 and 30. 96±1. 44 in the infected macrophages, and 1. 16±0. 22, 1. 15±0. 21, 1. 11±0. 09 and 1. 47±0. 31 in the uninfected group. Expression of these cytokines was decreased at every time points after co-culturing of DENV-2-infec-ted HUVECs with macrophages, but still significantly higher than that in the uninfected group. In the co-cul-ture group with DENV-2 infection, CYM-5442 pretreatment significantly decreased the expression at mRNA level of IL-6 and IL-8 in HUVECs (P<0. 01) and that of IL-6, IL-8, TNF-αand IL-1βin macrophages (P<0. 01). Conclusions DENV-2 could infect primary HUVECs, and then activate macrophages to promote the secretion of large amounts of IL-6, IL-8, TNF-αand IL-1β. Moreover, the activated macrophages could reduce the production of inflammatory cytokines in HUVECs to a certain extent.