Objective To investigate the status of report appropriateness in Clinical Hematology and to identify its potential influence factors to improve the quality of laboratory reports.Methods 1 120 National External Quality Assessment ( EQA ) participants laboratories were enrolled in this study.The questionnaires were assigned to all the participants in both electronic and printed form.The participants were asked to retrospectively count the total reports and the affected reports while the following quality indicators occurred in 2012:report delay, inconformity of data between instrument and LIS as well as between report and request erroneous report transportation, report recall, and report modification.All quality indicators were evaluated in two ways:percentage and sigma (σ) scale.Mann-Whitney Test and Kruskal-Wallis Test were used to analyze the potential impacts of report appropriateness.Results Totally 609 (54.38%)laboratories submitted the survey results .The sigma metrics of six quality indicators on report appropriateness were more than 4.The main reason for report delay was equipment failure.Group comparison suggested that the report appropriateness of laboratories in tertiary-A hospitals and accredited by ISO 15189 werebetter.Report appropriateness with electronic request, electronic form and electronic transmission were superior than that inother ways. Conclusions Report appropriateness in China differs from laboratory to laboratory. Laboratories should develop emergency action plan in case the instrument breaks down and strengthen information technology .Long-term internal quality control and external quality assessment scheme are very meaningful to identify the insufficient performance and improve laboratory quality .(Chin J Lab Med, 2015,38:632-636)

Objective:To study the cytotoxicity of PHEMA /CPC composite hydrogel.Methods:L929 cells were cultured by RP-MI1 640 with 1 0% fetal bovine serum(blank control),with PHEMA /CPC extraction(experimental group),high density polyethy-lene(HDPE)extracts(negative control)and 5% DMSO(positive control)for 24,48 and 72 h respectively.The cell proliferation was examined by MTT assay.Cell apoptosis was detected by flow cytometry and Annexin V-FITC /PI kit.Results:The A value of positive control group decreased with the increase of culture time(P <0.01 )(between experimental and negative control groups,P>0.05).The cytotoxicity of the experimental group was grade Ⅰ.That of other groups increased with the increase of culture time. Cell apoptosis(%)in PHEMA /CPC composite hydrogel group and blank group was 4.21 ±0.30 and 4.89 ±0.39 respectively(P>0.05).Conclusion:Injectable PHEMA /CPC composite hydrogel has no cytotoxicity and no effect on cell apoptosis.

Objective:To investigate the prevalence and significance of IgG-anti-cyclic citrullinated pep-tides (CCP) antibody in PSS patients .Methods:A total of 120 patients diagnosed with PSS were investi-gated in the first affiliated hospital of Baotou Medical College from March 2006 to December 2009.IgG-anti-CCP antibody was assayed by enzyme-linked immunosorbent assay (ELISA), also anti-Sj?gren’s syn-drome type A ( SSA) and Sj?gren’ s syndrome type B ( SSB) antibody were assayed by immunoblotting . Erythrocyte sedimentation rate ( ESR ) was assayed by westergren in serum , and C reactive protein (CRP), IgA, IgM, IgG and IgM-RF were detected by immune turbidimetric .At the same time, clinical symptoms and involvement of important organs were observed .Following up the patients above 3 years, the primary Sj?gren’ s syndrome ( PSS) patients who had progressed to rheumatoid arthritis ( RA) were evaluated .Results:The positive rate of anti-CCP antibody in the PSS patients was 19 .17%; After 3 years, more patients who were positive for anti-CCP antibody had progressed to RA (χ2 =5.015,P=0.022) than the patients in negative group;The patients in anti-CCP antibody positive group were more prone to joint involvement (χ2 =8.058,P<0.05), more swollen joints (U=152.00,P<0.05) and longer morning stiffness (U=100.00,P<0.05) than the patients with negative anti-CCP antibody, but the involvement of vital organs in the two groups had no significant difference (χ2 =0.208,0.099,0.000 and 0.122,P>0.05); The positive rate of anti-SSA and SSB antibody in anti-CCP antibody positive group and negative group had no significant difference (χ2 =0.008 and 0.56,P>0.05);Multiple linear regression showed that the level of anti-CCP antibody was positively correlated with IgM-RF levels in the PSS patients (B=0.61, 95%CI =0.36 -0.86, P<0.05), but had no significant correlation with ESR, CRP, IgA, IgM and IgG levels (P>0.05).There were no significant differences in the level of ESR, CRP, IgA, IgM and IgG between anti-CCP antibody positive group and negative group ( P >0.05), but the level of IgM-RF in anti-CCP antibody positive group was significantly higher than that in the negative group (U=623.50, P<0.05).Conclusion:Positive rate of IgG-anti-CCP antibody in PSS is 19 .17%, also it is associated with joint involvement and more prone to progressing to RA .

Objective: To investigate the antimotion sickness effects of ginsenosides combined with dexamethasone in rats. Methods: Fifty SD rats were randomly divided into 5 groups: normal saline, scopolamine-treated, ginsenosides-treated, dexamethasone-treated and ginsenosides plus dexamethasone-treated groups. There were 10 rats in each group. The rats in each group were fed with corresponding ingredients respectively, and then the rats were exposed to abnormal acceleration for one hour. The motion sickness index, the level of kaolin consumption and the course and time of spontaneous activity were observed. Results: The motion sickness index and the level of kaolin consumption of acceleration-exposed rats in ginsenosides plus dexamethasone-treated group were significantly lower than those in normal saline group. And the course and time of spontaneous activity of acceleration-exposed rats in ginsenosides plus dexamethasone-treated group were significantly higher than those in normal saline group. The level of body weight increment of acceleration-exposed rats in ginsenosides plus dexamethasone-treated group was significantly higher than that in dexamethasone-treated group. Conclusion: Ginsenosides combined with dexamethasone can significantly increase tolerance to acceleration of rats, and the drug combination can decrease side effects of methylprednisolone, such as body weight loss.

OBJECTIVETo investigate the incidence and risk factors for hypertension among taxi drivers working different shifts.

METHODSUsing the cluster sampling method, 415 day-shift and 304 night-shift taxi drivers in Jinan, China were selected and investigated. The influencing factors for hypertension were analyzed.

RESULTSThe incidence of hypertension in all taxi drivers was 33.2%. The incidence of hypertension in night-shift drivers was significantly higher than that in day-shift drivers (37.8% vs 29.9%, P<0.05). According to multivariate analysis, the incidence of hypertension in day-shift drivers was closely related to body mass index (BMI), working years, working hours, sleep duration, rest days, diet quality, water intake, and smoking, while the incidence of hypertension in night-shift drivers was closely related to BMI, working years, working hours, part-time job, sleep duration, rest days, and drinking.

CONCLUSIONBMI, working years, and working hours are the common risk factors for hypertension in day-shift and night-shift drivers. Sleep duration and rest days are the common protective factors. The risk factors for hypertension in taxi drivers vary with different shifts.

Automobile Driving ; Body Mass Index ; China ; epidemiology ; Humans ; Hypertension ; epidemiology ; Incidence ; Occupational Health ; Rest ; Risk Factors ; Time Factors ; Work Schedule Tolerance

Objective:To observe the effect of CD40 siRNA on the changes in kidney,urinary protein and complement C3 of MRL/Lpr mice and explore its therapy on lupus nephritis.Methods: 16 female MRL/Lpr mice were randomly divided into control group,empty vector group,CD40-siRNA1 group and CD40-siRNA2 group.The vectors expressing siRNA against CD40 were injected by tail veil into MRL/Lpr mice,while MRL/Lpr mice in control group and empty vector group were injected with the same dose of PBS and pGFP-V-RS vector respectively.There were six times injection and every one day.The 24 hours urine output was gathered 24 hours before mice were killed.Fourteen days following administration,these mice were killed,tissue sections of kidney were observed if the signal of siRNA were expressed in kidney.The expression levels of CD40 mRNA and protein in kidney tissue of MRL/Lpr mice were detected by RT-PCR and immunohistochemistry methods respectively.At the same time,the pathological changes of the kidney were observed by haematoxylin-eosin ( HE) staining method.The 24 h urinary protein content was detected using the method of coomassie brilliant blue and the expression levels of complement C3 in serum were detected by Immunoturbidimetric assays.Results:The vector of CD40-siRNA was expressed in kidney of MRL/Lpr.The expression levels of CD40 mRNA and protein in kidney were lower in CD40-siRNA1 group and CD40-siRNA2 group than control group and empty vector group on the 14th day after last injection ( P<0.05).The inflammatory cells infiltration of kidney and some glomerular volume were significantly reduced in CD40-siRNA1 group and CD40-siRNA2 group than control group and empty vector group.The renal tubular swelling was alleviated in CD40-siRNA1 group and CD40-siRNA2 group than control group and empty vector group.The levels of 24 hours urinary protein were lower and the levels of complement C3 were higher in CD40-siRNA1 group and CD40-siRNA2 group than control group and empty vector group ( P<0.05). Conclusion:CD-40 siRNA can suppress the expression levels of CD40 mRNA and protein and decrease inflammatory cells infiltration in kidney of MRL/Lpr.Meanwhile after suppressing expression of CD40 mRNA and protein, it can reduce the content of 24 hours urinary protein and elevate the level of complement C3 in serum,which CD-40 siRNA can delay progress of the disease and protect kidney,so that it has therapy effect on lupus nephritis.

Objective To evaluate the pelvic floor function in post-hysterectomy patients. Methods Transperineal pelvic ultrasound was used to observe the pelvic organs in post- hysterectomy patients, and parameters of pelvic floor were measured. Taking the inferior margin of public symphysis as the reference plane,the shape and motion of the proximal urethra and bladder neck were observed at rest and on maximum Valsalva maneuver. Bladder neck-symphyseal distance(BSD) and retrovesical angle were measured. And the bladder neck descent(BND),urethral rotation angle and the rotation angle of the bladder neck were also calculated. Interclass correlation coefficients were calculated to evaluate the consistency of data. Results At rest,the BSD and retrovesical angle were (-2.73±0.37)cm and (119.00±22.40)°, while on maximum Valsalva maneuver was (-0.25±0.67)cm and (114.74±21.50)°,respectively. BND was (2.46±0.59)cm,the urethral rotation angle and the rotation angle of the bladder neck was (70.68±19.91)° and (60.81±17.34) °,respectively. Combined with pelvic ultrasound and clinical manifestations,29 cases of pelvic floor dysfunction after hysterectomy were diagnosed (58.00%, 5 cases of stress urinary incontinence, 8 cases of proctoptoma and 16 cases of bladder prolapse). The consistency was very high in measuring BNS, retrovesical angle at rest and on maximum Valsalva maneuver and BND by different observers. The interclass coefficient was 0.90,0.89,0.91,0.88,0.92,respectively. And the interclass coefficient of urethral rotation angle and the rotation angle of the bladder neck was 0.79, 0.88,respectively. These results showed a good interobserver agreement. Conclusion Transperineal pelvic ultrasound is a simple,reproducible and noninvasive imaging method, which can reveal the position and function of female pelvic organ dynamically and evaluate postoperative pelvic floor function.

Objective:To investigate the suppressed e ects of total hedysarum polybotrys saccharide(THPS) alone and THPS combined with Cytoxan(CTX) on tumor-bearing mice and its mechanisms.Method:Kunming mice inoculated with S180 were given low,moderate and high dose THPS and THPS combined with CTX by intraperitoneal injection.Fourteen day later,tumor weight,inhibition rate,thymus index and spleen index were observed.CD4+ and CD8+ lymphocyte were counted though the ow cytometer.Results:Compared with the control,the moderate dose THPS showed signi cantly suppressed e ect on the growth of S180 tumor(P

Objective To investigate the therapeutic effect of tumor necrosis factor (TNF)-αsiRNA on typeⅡcolla-gen induced arthritis (CIA) in rats. Methods The expression vectors of siRNA against TNF-αgene were constructed suc-cessfully and were injected by tail veil into CIA rats. Twenty-four CIA rats were randomly divided into 4 groups including model group, empty vector group, TNF-α-siRNA1 group and TNF-α-siRNA2 group. CIA rats were injected with the same dose of phosphate buffered sodium (PBS) and pGFP-V-RS vector respectively in model group and empty vector group, while TNF-α-siRNA1 group and TNF-α-siRNA2 group were injected with TNF-α-siRNA1 eukaryotic expression vector and TNF-α-siRNA2 eukaryotic expression vector respectively. Another 6 rats, which were not established CIA model, were in-jected with PBS (blank control group). The serum expression levels of IL-1 were detected by ELISA on day 1, 5, 9 and 13 af-ter injection. The expression level of TNF-αmRNA was detected by reverse transcriptase polymerase chain reaction (RT-PCR) on day 13. Results The expression level of IL-1 was significantly higher on day 1, 5, 9 and 13 in model group than that of blank group (P＜0.05). The expression levels of IL-1 were significantly lower on day 1, 5 and 9 in TNF-α-siRNA1 group and TNF-α-siRNA2 group than that of model group and blank group (P ＜ 0.05). The expression level of TNF-αmRNA was significantly higher on day 13 in model group than that of blank group (P＜0.05). The expression levels of TNF-αmRNA were significantly lower in TNF-α-siRNA1 group and TNF-α-siRNA2 group than those of model group and emp-ty vector group (P＜0.05). Conclusion TNF-αspecific siRNA can suppress the levels of TNF-αmRNA and IL-1, which provides experimental basis for gene therapy of rheumatoid arthritis.

Objective To investigate the interactions between melanoma-derived exosomes and the microenvironment.Methods The exosomes were isolated from the culture medium of mouse melanoma cells and then co-cuhured with mesenchymal stromal cells (MSC) after identification.Immunofluorescence assay was performed to observe the exosomes engulfed by MSC.CCK-8 and transwell assays were used to evaluate the proliferation and migration of MSC.Effects of the exosomes on the expression of α-smooth muscle actin (α-SMA) in MSC were analyzed by Western blot.Results Co-culture of MSC with melanoma cell-derived exosomes enhanced the proliferation and migration of MSC as well as the expression of α-SMA.All of the changes mediated by the exosomes could be blocked by using the inhibitor of TGF-β receptor.Conclusion Melanoma cell-derived exosomes enhanced the proliferation and migration of MSC as well as the expression of α-SMA through TGF-β signaling pathway,which provided an advantageous microenvironment for melanoma progression.