To understand epidemiological characteristics of Marek's disease virus (MDV) prevalent in china currently,3 Marek's disease (MD) strains were isolated and identified from white feather meat chickens vaccined with MDV CVI988 or 814 through necropsy,histopathological observation,virus isolation and IFA detection,named SDAU1501,SDAU1502 and SDAU1503,respectively.vIL8,pp38,MEQ gene of the three strains of MDV were amplified using PCR,and compared with reference strains.The homology between SDAU1501 and SDAU1502 and virulent strains was above 97％,suggesting some features of virulent strains;while meq gene of SDAU1503 lost P amino acid at the 194 th site as that in CVI988,But the distinctive 177 nucleotide insertion mutations was not existed,predicting that it may be a attenuated vaccine strain.New variations of MDV continued and different types of variants emerged,therefore,prevalence and genetic monitoring of MD should be proceeded;meanwhile,more attentions should be given to MDV vaccine development.

BACKGROUNDDecreased platelet (PLT) count is one of the independent risk factors for mortality in intensive care unit (ICU) patients. This study was to investigate the relationship between PLT indices and illness severity and their performances in predicting hospital mortality.

METHODSAdult patients who admitted to ICU of Changzheng Hospital from January 2011 to September 2012 and met inclusion criteria were included in this study. Univariate analysis was used to identify potential independent risk factors for mortality. Multiple logistic regression analysis was used to calculate adjusted odds ratio for mortality in patients with normal or abnormal PLT indices. The relationship between PLT indices and illness severity were assessed by the Acute Physiology and Chronic Health Evaluation II (APACHE II) scores or sequential organ failure assessment (SOFA) scores in patients with normal and abnormal PLT indices. The performances of PLT indices in predicting mortality were assessed by receiver operating curves and diagnostic parameters. The survival curves between patients with normal and abnormal PLT indices were compared using Kaplan-Meier method.

RESULTSFrom January 2011 to September 2012, 261 of 361 patients (204 survivors and 57 nonsurvivors) met the inclusion criteria. After adjustment for clinical variables, PLT count <100 × 10 12 /L (P = 0.011), plateletcrit (PCT) <0.108 (P = 0.002), mean platelet volume (MPV) >11.3 fL (P = 0.023) and platelet distribution width (PDW) percentage >17% (P = 0.009) were identified as independent risk factors for mortality. The APACHE II and SOFA scores were 14.0 (9.0-20.0) and 7.0 (5.0-10.5) in the "low PLT" tertile, 13.0 (8.0-16.0) and 7.0 (4.0-11.0) in the "low PCT" tertile, 14.0 (9.3-19.0) and 7.0 (4.0-9.8) in the "high MPV" tertile, 14.0 (10.5-20.0) and 7.0 (5.0-11.0) in the "high PDW" tertile, all of which were higher than those in patients with normal indices. Patients with decreased PLT and PCT values (all P < 0.001), or increased MPV and PDW values (P = 0.007 and 0.003, respectively) had shortened length of survival than those with normal PLT indices.

CONCLUSIONSPatients with abnormally low PLT count, high MPV value, and high PDW value were associated with more severe illness and had higher risk of death as compared to patients with normal PLT indices.

Adolescent ; Adult ; Aged ; Blood Platelets ; physiology ; Critical Illness ; Female ; Humans ; Male ; Mean Platelet Volume ; Middle Aged ; Platelet Count ; Prognosis ; Retrospective Studies ; Young Adult

We studied on the bio-safety problem of cultivating innovative talents in medical microbiology. The bio-safety of laboratory was controlled by educating bio-safety before the experiments, regulating basic operations during the experiments and constructing management system out of the experiments. Then we got some experience to ensure students’ bio-safety during the research.

Objective To explore the effect of vitamin D hormone(VDH)on autophagy and apoptosis in hippocampus of rats with traumatic brain injury(TBI). Methods A total of 45 male Sprague-Dawley rats were divided into control group(n=15),model group(n=15)and VDH group(n=15).The TBI model was established in the model group and VDH group.VDH group was injected with VDH 1 μg/kg 30 minutes,24 hours and 48 hours after modeling,respectively.The expression of microtubule as-sociated protein 1 light chain 3(LC3)and p62 was detected with Western blotting,and the number of apoptotic cells were detected with TUNEL three days after modeling.All groups were tested with Morris water maze on the fifth,sixth and seventh days. Results The number of TUNEL positive cells in hippocampus was more in the model group than in the control group (P<0.05),and was lower in VDH group than in the model group(P<0.05),as well as the expression of LC3II/LC3I and p62(P<0.05).The escape latency was longer in the model group than in the control group(P<0.05),and was shorter in VDH group than in the model group (P<0.05). There was no significant difference in the swimming velocity on the fifth,sixth,and seventh days among three groups(F=0.530,P>0.05). Conclusion VDH has potential neuroprotective effects on TBI,which might be associated with its anti-apoptosis effect on the expression of LC3 and p62 proteins in hippocampus after TBI.

Objective To investigate the clinical efficacy of the procedure for prolapse and hemorrhoids (PPH) plus external dissection and internal ligation in small incisions in the treatment of circumferential mixed hemorrhoids.Methods From January 2015 to January 2017,168 patients with annular mixed hemorrhoids in the People's Hospital of Qingzhou were selected.All cases were treated with PPH combined with small incision exfoliation and internal ligation.The clinical data of 168 patients were analyzed.Results Average operation time was 25 minutes;average hospital stay time was 6 days;168 cases were all cured,2 cases suffered from anal margin edema,7 cases urinary retention.There was no complications such as anal stricture,fecal incontinence etc.Conclusion PPH plus external dissection and internal ligation in small incisions in the treatment of circumferential mixed hemorrhoids has such multiple advantages as small incision,minor trauma,exact efficacy,less complications after operation and shorter hospital stay.

The genomic diversity of Avian leukosis virus subgroup J (ALV-J) was investigated in an experimentally infected chicken. ALV-J variants in tissues from four different organs of the same bird were re-isolated in DF-1 cells, and their gp85 gene was amplified and cloned. Ten clones from each organ were sequenced and compared with the original inoculum strain, NX0101. The minimum homology of each organ ranged from 96.7 to 97.6%, and the lowest homology between organs was only 94.9%, which was much lower than the 99.1% homology of inoculum NX0101, indicating high diversity of ALV-J, even within the same bird. The gp85 mutations from the left kidney, which contained tumors, and the right kidney, which was tumor-free, had higher non-synonymous to synonymous mutation ratios than those in the tumor-bearing liver and lungs. Additionally, the mutational sites of gp85 gene in the kidney were similar, and they differed from those in the liver and lung, implying that organ- or tissue-specific selective pressure had a greater influence on the evolution of ALV-J diversity. These results suggest that more ALV-J clones from different organs and tissues should be sequenced and compared to better understand viral evolution and molecular epidemiology in the field.
Animals ; Avian Leukosis Virus* ; Avian Leukosis* ; Birds ; Chickens* ; Clone Cells ; Kidney ; Liver ; Lung ; Molecular Epidemiology ; Silent Mutation

OBJECTIVETo investigate the principle and measures of combined treatment of the patients with hyperlipidemic severe acute pancreatitis (HL-SAP).

METHODSThe clinical data of 54 patients with HL-SAP including two phases from January 1996 to December 2000 and from January 2001 to August 2006 were analyzed retrospectively. In the first phase, 25 patients were performed by routine methods to decrease triglyceride, or additional operative treatments. In the second phase, 29 cases were treated by multiple ways of non-operative combined therapy, or additional operative treatments mainly by minimally invasive procedures.

RESULTSAmong 54 cases with HL-SAP, 33 cases (61.1%) received non-operative therapy and 21 cases (38.9%) received surgical intervention. Overall mortality was 18.5% (10/54). In the first phase of 25 cases, the mortality in non-operative group and surgical intervention group was 21.4% (3/14) and 36.3% (4/11), respectively. In the second phase of 29 cases, the mortality in non-operative group and surgical intervention group was 10.5% (2/19) and 10.0% (1/10), respectively. The overall curative rate, morbidity, overall mortality, content of triglyceride at the fourth day after onset, APACHE II score at the fourth day after onset and average stay were obviously improved in the second phase compared with the first phase (P < 0.05).

CONCLUSIONSAccording to individualized therapy principles, treatment for HL-SAP should emphasis on multiple ways of non-operative combined therapy and appropriate choices of the timing, indication in surgical intervention. And the choice of operative procedure should follow the principle of minimally invasive surgery. Meanwhile, pay more attention to monitoring and controlling the level of triglyceride post-discharge for the patients with the history of HL-SAP.

Adult ; Aged ; Combined Modality Therapy ; Female ; Follow-Up Studies ; Humans ; Hyperlipidemias ; complications ; therapy ; Hypolipidemic Agents ; therapeutic use ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; Pancreatitis, Acute Necrotizing ; diagnosis ; etiology ; therapy ; Prognosis ; Retrospective Studies

OBJECTIVENovel stents loaded with antibody against CD105 were analyzed for their potential to limit coronary neointima formation and to accelerate endothelialization by attracting activated endothelial cell.

METHODSThirty Stents coated with antibody against CD105, thirty unloaded polymer, and thirty bare metal stents were deployed in 90 coronary arteries of 30 minipigs. Oral aspirin (300 mg before operation and 100 mg post operation) and clopidogrel (300 mg before operation and 75 mg post operation) were orally administrated. Coronary artery quantitative analysis was completed by coronary arteriography, the vascular endothelium changes were observed under scanning electron microscope and the vascular morphological changes were observed under light microscope 7 and 14 days after operation.

RESULTSComplete procedural and angiographic success was achieved in all 30 minipigs. There were no major adverse cardiac and cerebrovascular events. At 7 days, there was no difference for mean neointimal area and percent area stenosis among various groups. At 14 days, endothelialization scores were significantly higher in the CD105 antibody-loaded stents and bare metal stents group than in sirolimus-eluting stents group (1.78 ± 0.49, 1.50 ± 0.67 vs. 1.08 ± 0.29, all P < 0.05), mean percent area stenosis in the CD105 antibody-loaded stents, sirolimus-eluting stents group were less than that in bare metal stents group [(23.8 ± 4)%, (24.2 ± 2)% vs. (38.0 ± 3)%, all P < 0.05], mean angiographic late luminal loss in the CD105 antibody-loaded stents, sirolimus-eluting stents group were less than that in bare metal stents group [(0.29 ± 0.28) mm, (0.28 ± 0.02) mm vs. (0.41 ± 0.01) mm, all P < 0.05]. There was no difference for mean percent area stenosis in the CD105 antibody-loaded stents and sirolimus-eluting stents group. The mean neointimal area in the CD105 antibody-loaded stents, and sirolimus-eluting stents group were less than that in bare metal stents group [(0.88 ± 0.08) mm(2), (0.89 ± 0.12mm)(2) vs. (1.00 ± 0.14) mm(2), all P < 0.05] and there was no difference for the mean neointimal area in the CD105 antibody-loaded stents and sirolimus-eluting stents group. At 7 and 14 days, there was no difference for the injury score and the inflammation score among various groups, scanning electron microscopy evidenced enhanced endothelial coverage on CD105 antibody-loaded stents compared to sirolimus-eluting stents group.

CONCLUSIONStent coated with antibody against CD105 could effectively reduce in-stent restenosis and accelerate endothelialization in the minipigs.

Animals ; Antibodies ; pharmacology ; Antigens, CD ; immunology ; Aspirin ; pharmacology ; Coronary Restenosis ; prevention & control ; Endothelial Cells ; drug effects ; Neointima ; prevention & control ; Stents ; Swine ; Swine, Miniature ; Thrombosis ; prevention & control ; Ticlopidine ; analogs & derivatives ; pharmacology

This study was aimed to explore the effect of cordyceps sinensis enhancing lymphocyte proliferation and surface CD marker expression in simulated microgravity environment. The splenic lymphocytes were separated from mice and cultured in the rotary cell culture system simulated microgravity environment. The cells were treated with different concentration of cordyceps sinensis solution (0, 6.25, 12.5, 25 and 50 µg/ml) for 24, 48 and 72 h respectively, then the cells were harvested, and analyzed for cell proliferation and the expression of cell surface markers (CD4 and CD8). The results showed that under simulated microgravity environment, the lymphocyte proliferation was inhibited. When the concentration of cordyceps sinensis was 25 or 50 µg/ml, the lymphocyte proliferation, CD4 and CD8 expressions all increased, but 50 µg/ml cordyceps sinensis could inhibit the proliferation ability with the time prolonging. It is concluded that the suitable concentration of cordyceps sinensis displayed the ability to enhance the lymphocyte proliferation and CD marker expression in simulated microgravity environment. These results may be valuable for screening drugs which can be potentially against immunosuppression under simulated microgravity.
Animals ; CD4 Antigens ; metabolism ; CD8 Antigens ; metabolism ; Cell Proliferation ; drug effects ; Cells, Cultured ; Cordyceps ; Immune Tolerance ; Lymphocyte Activation ; drug effects ; Lymphocytes ; drug effects ; metabolism ; Mice ; Mice, Inbred C57BL ; Polysaccharides ; pharmacology ; Spleen ; cytology ; Weightlessness Simulation

OBJECTIVETo compare the efficacy of the video-assisted minimally invasive radiofrequency ablation in comparison with catheter ablation for the treatment of persistent atrial fibrillation (AF).

METHODSA total of 172 patients [116 male, mean age (56 ± 12) years] with persistent AF underwent ablation procedures during the last 4 years in our institute (83 patients underwent video-assisted minimally invasive radiofrequency ablation, group MIA and 89 patients underwent circumferential pulmonary vein linear ablation, group CA). Mean duration of preoperative AF was (72 ± 68) months. Patients were follow-uped for a period of 1 to 3.6 years [mean (2.2 ± 0.8) years].

RESULTSThere was no procedure related death. During follow-up, one patient died of encephalorrhagia in CA group, one patient died of sudden death in each group. At the end of the procedure, there were 67 sinus rhythm (39.0%), 4 pacing rhythm (2.3%), 29 atrial flutter or atrial tachycardia (16.9%) and 72 AF (41.9%). Before discharge, sinus rhythm was recorded in 53 patients (63.9%) of MIA group and in 78 patients (87.6%) of CA group; AF recorded in 24 patients (28.9%) of MIA group and in 4 patients (4.5%) of CA group (P < 0.01). At the latest follow-up, sinus rhythm was recorded in 65 patients (79.3%) of MIA group and in 54 patients (62.1%) of CA group; AF or atrial flutter was recorded in 14 patients (17.1%) of MIA group and in 24 patients (27.6%) of CA group (P = 0.028). The Kaplan-Meier survival analysis showed that the long-term efficacy of MIA is superior to CA in terms of incidence of free of AF, AF recurrence and antiarrhythmic drugs (P = 0.03, P = 0.028, P = 0.017, respectively).

CONCLUSIONSThe video-assisted minimally invasive ablation was safe and effective, and had an optimistic long-term success rate for patients with long-lasting persistent AF. Thus, a randomized study comparing the long-term efficacy between the two procedures for patients with long-lasting persistent AF is warranted.

Adult ; Aged ; Aged, 80 and over ; Atrial Fibrillation ; surgery ; Catheter Ablation ; Female ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; methods ; Retrospective Studies ; Thoracoscopy ; Treatment Outcome