Objective To draw up a job self-regulation questionnaire for airline pilots and to evaluate its reliabilities and validities.Methods A job self-regulation questionnaire was developed based on documents and interviews.In order to examine the validity,208 airline pilots of CAAC were tested and 31 department leaders of them were interviewed.Results The self-regulation of airline pilot was composed of eight key dimensions,which had been examined in the confirmatory factor analysis.The Cronbach of full questionnaire was ?=0.743,and the reliability of each dimension was beyond Cronbach ?=0.516.Coefficient of stability of the questionnaire was beyond 0.606(P

This study investigated the role of Echinococcus multilocularis vesicle-derived extracellular vesicles(EVs)con-taining emu-miR-10-5p in regulating HSC activation in vitro.Mice were injected intraperitoneally with protoscoleces to con-struct a secondary alveolar echinococcosis model,and E.multilocularis vesicles were cultured in mice and identified by PCR.The EV structure in cultured vesicle tissue was observed by transmission electron microscopy.EVs were isolated from vesicle culture supernatants through differential-ultracentrifugation,and identified by transmission electron microscopy,nanoparticle size analysis,and western blotting.The activity of HSCs treated with different EV concentrations was detected with CCK-8 assays.The expression levels of α-SMA,and collagen Ⅰ and Ⅲ were detected by RT-qPCR and western blotting after EV treatment of HSCs.Bioinformatics analysis identified the specific miRNA emu-miR-10-5p.The proliferation of HSCs was detected with EdU after overexpression of emu-miR-10-5p,and the expression levels of α-SMA,collagen Ⅰ,and collagen Ⅲ in cells were detected by RT-qPCR and western blotting.Detection of α-SMA,collagen Ⅰ,and collagen Ⅲ expression levels in HSCs was performed after EVs were extracted from the culture supernatant of vesicular tissues with emu-miR-10-5p knockdown.E.multilocularis vesicles were successfully cultured from focal material in mice,and the E.multilocularis origin was confirmed through PCR amplification of specific genes.TEM observation of culture vesicles in-dicated abundant surface vesicular structures.E.multilocularis vesicle-derived EVs were isolated by differential-ultracentrifu-gation,and confirmed by TEM to be spherical and membrane like-structures.Vesicle-derived EVs were internalized by HSCs,and promoted the proliferation and activation of HSCs.Comprehensive analysis of miRNA sequencing results revealed emu-miR-10-5p expression in E.multilocularis-infected mouse serum,metacestode tissue,E.multilocularis-derived EVs,germi-nal layer cells,and protoscoleces.Moreover emu-miR-10-5p was confirmed to be present in higher amounts in E.multilocu-laris-derived EVs,according to RT-qPCR.Further studies confirmed that overexpression of emu-miR-10-5p promoted HSC proliferation and increased α-SMA,collagen Ⅰ,and collagen Ⅲ mRNA and protein expression levels in HSCs.In contrast,EVs extracted from culture supernatants after emu-miR-10-5p knockdown in vesicles did not increase a-SMA,collagen Ⅰ,and colla-gen Ⅲ mRNA and protein expression levels.E.multilocularis vesicle-derived EVs and emu-miR-10-5p thus promote the acti-vation of HSCs.

Little is known about the non-structural protein 6(NSP6)of rotavirus.This report describes expression of the NSP6 of a group A human rotavirus strain TB-Chen in bacteria,and its immunological properties and cellular distribution.The results showed that the recombinant NSP6(rNSP6)was expressed in high efficiency without any other proteins fused(possesses about 34.2% of total bacterial proteins).rNSP6 elicited mono-specific antibodies in immunized guinea pigs and the antibodies could react with the rNSP6 itself and the viral NSP6 proteins synthesized in SA11-or Wa-infected MA104 cells in Western blot and immunofluorescence assay.The NSP6 distributed evenly in the cytoplasm mainly around the nucleus of virus-infected cells,no viroplasm-like gathering observed;The top amount of NSP6 synthesized in SA11-infected cells or Wa-infected cells could be detected at 12h after infection.This is the first report about the high expression of entire NSP6(without any other proteins fused)in prokaryotic expression system and detection of NSP6 synthesis in virus infected cells by immunofluorescence assay.The results are important to understand the structure,biological properties and further application of the NSP6.

OBJECTIVETo evaluate the clinical effectiveness of transurethral seminal vesiculoscopy (TUSV) combined with finasteride in the treatment of recurrent hemospermia.

METHODSThis study included 32 patients with recurrent hematospermia, with the disease course of 3 months to 4 years. After administration of finasteride at 5 mg/d for 2 weeks, the patients underwent TUSV for both exploration of the causes and treatment, followed by medication with finasteride at the same dose for another 2 weeks. Postoperative follow-up was conducted for observation of the outcomes and complications.

RESULTSTUSV was successfully accomplished in all the 32 cases, which revealed 16 cases of seminal vesiculitis, 10 seminal calculi, 1 seminal vesicle cyst, 2 seminal vesicle polyps, and 3 seminal vesicle abscess. The operative time was 20 to 51 (31.0 +/- 5.2) minutes. Postoperative complications included 1 case of acute epididymitis and 3 cases of breast discomfort within the first 4 weeks. No incontinence, urethral stricture, rectal injury, retrograde ejaculation, and sexual dysfunction occurred postoperatively. All the patients but 1 were followed up for 6 months to 2 years. Twenty-nine of the cases were cured, and 2 experienced recurrence.

CONCLUSIONTransurethral seminal vesiculoscopy combined with finasteride is safe and effective for the treatment of recurrent hemospermia.

Adult ; Endoscopy ; methods ; Finasteride ; therapeutic use ; Follow-Up Studies ; Hemospermia ; therapy ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Treatment Outcome

AIM:To evaluate the efficacy and safety of "one-stitch anastomosis through the skin" repair of canalicular laceration.METHODS:The data of 32 cases (32 eyes) of canalicular laceration who underwent repair of lacerated canaliculi with one-stitch anastomosis through the skin were retrospectively reviewed, inferior canalicular laceration in 29 patients,superior canalicular laceration in 1 patient, 2 cases involving both the inferior and superior canalicular laceration. All the operations were performed under surgical microscope, 5-0 silk sutures were used and silicone tube of 0.8mm diameter was employed in intubation. The stents were left in place for 3 months postoperatively and then removed. The follow-up period was 1 to 36 months.RESULTS: In 32 patients, 28 (88%)patients were cured entirely, 3 (9%)patients were meliorated, and 1 (3%)patient had no effects. A total of 29 patients complied with scheduled follow up 1-36 months (average 12 months) after stent removal, and 3 patients were lost in follow-up. All the patients had got good recovery of eyelid laceration with no traumatic deformity in eyelid and canthus.CONCLUSION: In "one-stitch anastomosis through the skin"repair of canalicular laceration, the cut ends could be anastomosed directly,for there was no suture remained in the wound permanently, so there was no suture-related granuloma which might cause obstruction or stenosis of canaliculi. It was simple, economical ,effective and safe.

Objective To explore inhibition of amlodipine on myocar-dial cell injury induced by ischemia reperfusion .Methods Thirty Wistar rats were randomly into three groups: sham operation group ( n =10 ) , model group group ( n =10 ) , test group ( 2 mg? kg -1 amlodipine , n=10).The model group and test group were made by ligation of left anterior descending coronary artery to make the model of myocardial ischemia reperfusion.Rats in each group were administered 7 d before ligation.Cell apoptosis was examed by flow dual staining method .The activity of cysteinyl aspartate specific proteinase 3 ( Caspase 3 ) was measured by spectrophotometry .The activation of phosphatidylinositol 3 kinase ( PI3K)/protein kinase B ( AKT) signalling pathway, B-cell lymphoma-2 ( Bcl-2 ) , Bcl-2 associated X protein ( Bax ) were assayed by Western blot .Results Compared to sham operation group on early and late myocardial cell apoptosis , myocardial cell apoptosis with ( 2.34 ±0.35 )%, (3.58 ±0.39 )%, that on early and late myocardial cell apoptosis were increased with ( 15.69 ±1.14 )%, (24.74 ±2.56)%in model group ( P <0.05 ) .Compared to sham operation group on the activity of Bax with (0.18 ±0.01) and Caspase 3 activity with (1.00 ±0.10), the expression of Bax express with (0.62 ±0.06) and Caspase 3 activity with (3.98 ±0.18) in model group were increased (P<0.05).Compared to sham operation group on the expre-ssion of Bcl-2 with (0.99 ±0.10 ) and expression of PI3K with (0.89 ±0.06 ), on the expression of Bcl-2 with (0.14 ±0.01) and expression of PI3K with (0.18 ±0.01) in model group were decreased (P<0.05). Compared to sham operation group on phosphorylation of AKT with ( 0.95 ±0.10 ) , the phosphorylation of AKT in model group with (0.13 ±0.01 ) was decreased ( P<0.05 ).Compared with model group , test group could change the variation on the early and late myocardial cell apoptosis with ( 5.23 ±0.13 )%, ( 8.09 ±0.35 )% while on the Caspase 3 activity with ( 1.47 ±0.14 ) ( P<0.05 ) .Conclusion These results suggested that amlodipine inhibited myocardial ischemia reperfusion injury, which was related to activition PI3K/AKT signal pathway.

Objective To study knowledge of healthy volunteers in-volved in Phase ⅠClinical Studies to clinical researches and related fac-tors.Methods The public awareness of research for therapeutic ad-vancements through knowledge and empowerment (PARTAKE) question-naires, designed by Duke University , were administered to 100 partici-pants in phaseⅠclinical study in Peking university third hospital.Re-sults The following perceptions were reported: research benefited our society (96.0%) , human experiment was necessary for developing new therapeutic method (91.0%), confidentiality and voluntary participating were adequately approved ( 90.0%) , all the undesirable effects were caused by the research ( 18.0%) , and volunteers would be paid for any undesirable adverse reactions completely ( 81.0%).Conclusion Re-sults suggest that the healthy volunteers have a good command of clinical research generally.They are aware of protections to participants , but they do not have a full understanding of compensation for damages .

OBJECTIVESystematic reviews of diagnostic value of the nuclear matrix protein 22 (NMP22) and urine cytology for bladder cancer.

METHODSDevelopment of inclusion criteria, exclusion criteria and search strategy to retrieve relevant literature. Screening the literature according to inclusion criteria and exclusion criteria. Quality evaluation of the screening and data extraction, using MetaDiSc 1.4 software for Meta analysis.

RESULTSIn total, 266 relevant studies were searched, excluded 256 studies, and then 10 studies were included, with 4895 patients involved. The pooled sensitivity and specificity of NMP22 to detect bladder cancer were 0.76 (95%CI: 0.74 - 0.77), 0.80 (95%CI: 0.79 - 0.82), respectively. The pooled sensitivity and specificity of urine cytology were 0.36 (95%CI: 0.34 - 0.38), 0.94 (95%CI: 0.93 - 0.95), respectively. The area under curve (AUC) for NMP22 and urine cytology were 0.8533 and 0.8628, and Q(*) index were 0.7863 and 0.7934, respectively.

CONCLUSIONSFor the diagnosis of bladder cancer, the sensitivity of NMP22 was higher than urine cytology, but the specificity was lower than urine cytology. Overall diagnostic performance of NMP22 was medium, it was no significant difference with urine cytology. It can't replace urine cytology now.

Cytological Techniques ; Humans ; Nuclear Proteins ; analysis ; Sensitivity and Specificity ; Urinalysis ; Urinary Bladder Neoplasms ; diagnosis

OBJECTIVETo investigate the expression of guanylin in colorectal cancer.

METHODSThe expression of guanylin was examined by RT-PCR and semiquantitative analysis in 20 cases of colorectal cancer, and its relationship with clinical characteristics was analyzed.

RESULTSThe positive expression of guanylin in normal tissue (80%, 16/20) was significantly higher than that in tumor tissue (35%, 7/20) (P<0.01). The same result was found in the semiquantitative analysis of 14 cases with differential expression. Differential expression of guanylin in colorectal cancer was associate with TNM stage (P<0.05), not with sex, Borrmann type and degree of differentiation (all P>0.05).

CONCLUSIONThere is differential expression of guanylin in colorectal cancer, and this kind of differential expression is associated with tumor TNM stage.

Colorectal Neoplasms ; metabolism ; pathology ; Female ; Gastrointestinal Hormones ; metabolism ; Humans ; Male ; Middle Aged ; Natriuretic Peptides ; metabolism ; Neoplasm Staging

BACKGROUNDMyocardial apoptosis is involved in the pathogenesis of sepsis-related myocardial depression. However, the underlying mechanism remains unknown. This study investigated the role of mitochondrial damage and mitochondria-induced oxidative stress during cardiac apoptosis in septic rats.

METHODSSeventy-two Sprague-Dawley rats were randomly divided into a control group and septic group receiving lipopolysaccharide injection. Heart tissue was removed and changes in cardiac morphology were observed by light microscopy and scanning electron microscopy. In situ apoptosis was examined using terminal transferase-mediated dUTP nick end-labeling assay and nuclear factor-kappa B activation in myocardium by Western blotting to estimate myocardial apoptosis. Appearance of mitochondrial cristae and activation of cytochrome C oxidase were used to evaluate mitochondrial damage. Oxidative stress was assessed by mitochondrial lipid and protein oxidation, and antioxidant defense was assessed by mitochondrial superoxide dismutase and glutathione peroxidase activity.

RESULTSSepsis-induced inflammatory cell infiltration, myocardium degeneration and dropsy were time-dependent. Expanded capillaries were observed in the hearts of infected rats 24 hours post-challenge. Compared with sham-treated rats, the percentage of cell apoptosis increased in a time-dependent manner in hearts from septic rats at 6 hours, 12 hours and 24 hours post-injection (P < 0.05). The expression of nuclear factor-kappa B p65 decreased gradually in the cytosol and increased in the nucleus during sepsis, indicating that septic challenge provoked the progressive activation of nuclear factor-kappa B. Mitochondrial cristae and activation of cytochrome C oxidase increased in a time-dependent manner. Both superoxide dismutase and glutathione peroxidase activities decreased, while mitochondrial lipid and protein oxidation increased between 6 and 24 hours after lipopolysaccharide challenge.

CONCLUSIONSSeptic challenge induced myocardial apoptosis and mitochondrial damage. Furthermore, mitochondrial damage via alteration of defenses against reactive oxygen species might play an important role in myocardial apoptosis during sepsis.

Animals ; Apoptosis ; physiology ; Male ; Mitochondria, Heart ; metabolism ; pathology ; Myocardium ; metabolism ; pathology ; Oxidative Stress ; physiology ; Rats ; Rats, Sprague-Dawley ; Sepsis ; metabolism ; physiopathology