Objective To investigate costimulatory molecules CD80 and CD86 expression in acute myelogenous leukemic cells and clinical implication.MethodsThe expression of CD80 and CD86 in the patients with acute myelogenous leukemia and HL-60 cells,U937 cells,NB4 cells,K567 cells was confirmed by Flow Cytometer.ResultsCD80 was very low or no expression in patients with acute myelogenous leukemia.CD86 expressed in acute myelogenous leukemia (27.86±19.65)%,which was much higher than that in control group[(1.21±0.13)%,t＝3.55,P＜0.01].No significant changes were observed in the expression of CD86 in M4 cells(48.65±21.92)%,M5 cells(39.25±18.67)% and control group(50.20±20.31)%(P＞0.05).After the cells were cultured for 24 h and 48 h,the expression of CD86 was (30.62±5.35)% and (29.43±4.67)% in HL-60 cells ,(24.12±5.23)% and (26.56±6.54)% in U937 cells,and,(21.25±3.78)% and (23.21±6.98)% in NB4 cells (all P＞0.05).The expression of CD80 and CD86 was very low in K562 cells.ConclusionsCostimulatory molecules CD86 expressed in acute myelogenous leukemic cells in the patients with acute myelogenous leukemia and HL-60 cells,U937 cells,NB4 cells.

Objective To investigate the clinical effect of super selective embolization combined with opera-tion for treatment of meningiomas.Methods 82 cases treated by operation and pathology in return for meningioma were collected in the study,including 44 cases of preoperative superselective embolization for aneurysms as the treat-ment group,and the remaining 38 cases without preoperative embolization of patients as the control group.The opera-tion time,bleeding amount in the operation and the rate of total tumor removal were recorded and compared between the two groups.Results The average amount of bleeding of treatment group was (330.36 ±95.41)mL.The average amount of bleeding of control group was (460.82 ±114.64)mL.The data of the two groups was statistically significant (t =5.624,P <0.01).,The treatment group bleeding amount was less than that of the control group;,the mean oper-ation time of treatment group was (5.36 ±2.62)h,,the average operation time of control group was (6.63 ±2.25)h.The data of the two groups was statistically significant (t =2.355,P =0.021 ),the operation time of the treatment group was less than that of the control group.The total resection rate was 70.4% in treatment group and 36.8% in the control group,there was statistically significant (P <0.05),and the total resection rate in the treatment group was higher than that in the control group.Conclusion Compared with single operation treatment of meningiomas superse-lective embolization combined with operation for treatment of meningiomas can shorten operation time,reduce intraoperative hemorrhage,improve the rate of total tumor removal.It can reduce the operation risk and improve the treatment effect.

Objective To investigate the mental health status of students with foreign nursing spe-cialty and analyze its relationship with stress, coping style and perceived social support. Method The cluster sampling was conducted between students with foreign nursing specialty. The Perceived Social Support Scale (PSSS), Symptom Check List-90 (SCL-90), and self-designed demographic questionnaires including demographic information questionnaire, College Students Stress Scale and Coping Style Questionnaire were employed. Results Students with foreign nursing specialty obtained significantly higher scores in all factors of SCL-90 when compared to the national youth norm,and obtained significantly higher scores in factors of somatization, obsession, anxiety, fear and psychotic diseases when compared to the norm of college students. The multifactor analysis of mental health status in students with foreign nursing specialty showed that soma-tization factors contained personal stress, seeking help, family supports and other supports;obsession factors contained personal stress, negative life events, academic stress and solving problem;interpersonal sensitivity factors contained personal stress, academic stress, solving problem, self-blame, fantasy and retreat; depres-sion factors contained personal stress, academic stress, solving problem, self-blame and other supports;anxiety factors contained personal stress, academic stress, fantasy, self-blame, family supports and other supports; hostility factors contained personal stress, seeking help, retreat, fantasy and other supports; fear factors contained personal stress, academic stress, seeking help, retreat and fantasy; crankiness factors con-tained personal stress, academic stress, solving problem, retreat, self-blame, family supports and friend sup-ports; factors of psychotic diseases contained personal stress, academic stress, solving problem, self-blame and friend supports;and factors of other symptoms contained personal stress, negative life events, academic stress, retreat, self-blame, family supports, friend supports and other supports. Conclusion The mental health status of students with foreign nursing specialty was inferior to the norms of national youths and col-lege students. It was negatively correlated with stress, active coping style, friend supports and other supports;while positively correlated with passive coping style (except escape) and family supports. Therefore, mental health education toward students with foreign nursing specialty should be strengthened in order to reduce their stress, improve their coping style, enhance their social supports, and finally promote their mental and physical development.

Objective To investigate the serum C-reactive protein (CRP) level in patients with acute cerebral infarction and acute massive cerebral infarction with multiple organ dysfunction syndrome (MODS),and analyze the clinical value of CRP. Methods The serum CRP level of 50 patients of control group and 50 patients of cerebral infarction admitted to hospital within 7 days (30 patients were admitted into acute cerebral infarction group and 20 patients into acute massive cerebral infarction with MODS group) were determined by immune scatter turbidimetry. Results (1)In cerebral infarction patients,serum CRP level in 48 cases(96%) was equal and over 5 mg/L.In control group,serum CRP level in 3 cases(6%) was equal and over 5 mg/L(P＜0.0 5).(2)The level of serum CRP acute in cerebral infarction group and in acute massive cerebral infarction with MODS group increased significantly than that in control group (P＜0.01).The level of serum CRP in acute massive cerebral infarction with MODS group increased significantly than that in acute cerebral infarction group.(3)When the level of CRP＜25 mg/L,the incidence of MODS in patients with acute cerebral infarction was zero.When the level of CRP≥25 mg/L,the incidence of MODS increased gradually with the rise of CRP. Conclusions There is positive correlation between the serum level of CRP and the severity of acute cerebral infarction and the incidence of MODS.CRP is a useful marker in predicting the prognosis of acute massive cerebral infarction with MODS.

Objective To evaluate the value of carotid artery bruit in predicting carotid stenosis in patients with cerebral arterial thrombosis. Methods Two hundred cerebral arterial thrombosis patients were divided into bruit group and no bruit group according to carotid artery auscultation,with 100 cases in each group. The patients with cardiac murmur, vein sound and thyroid noise were excluded from bruit group. The examination of carotid artery auscultation (transcranial Doppler sonography ) was managed in all the patients,and digital subtraction angiography (DSA) about aortic arch and the whole brain were perfomed. The carotid stenosis rate, site, degree were compared and the relationship between carotid bruit grade and carotid stenosis degree were evaluated. Results The carotid stenosis rate in bruit group [67% (67/100)] was higher than that in no bruit group [29%(29/100)](P＜ 0.01 ). There was significant difference in the carotid stenosis site and degree between two groups (P ＜0.05). Carotid bruit were significantly associated with stenosis near carotid bifurcation or serious stenosis (P ＜ 0.05). The carotid bruit grade was positively related with the carotid stenosis degree (P ＜ 0.05 ). Conclusions Carotid bruit is associated with site and degree of carotid stenosis. Carotid bruit is valuable in screening for carotid stenosis in patients with cerebral arterial thrombosis.

AIM:To study the expression level of S100 calcium-binding protein A4 (S100A4) in synovial tissue of the knee joint in rheumatoid arthritis (RA) patients and normal persons, and the effect of S100A4 on the angiogenesis induced by rheumatoid arthritis fibroblast-like synoviocytes (RAFLSs).METHODS:The synovial tissue was taken from the knee joint of the RA patients (RA group) and the normal persons (control group).The protein expression of S100A4 and vascular endothelial growth factor (VEGF) in the synovial tissue of the 2 groups was observed by immunohistochemistry.RAFLSs were isolated from synovial tissue of patients with active RA.ELISA was used to detect the effect of S100A4 on the secretion of VEGF by RAFLSs.The effect of S100A4 on the angiogenesis of HUVECs cultured with conditioned medium from RAFLSs was also detected.RESULTS:The protein of S100A4 and VEGF was highly expressed in the synovial tissues of RA group (P<0.05).rhS100A4 significantly stimulated the secretion of VEGF in RAFLSs in a time-and dose-dependent manner (P<0.05).Cultured with conditioned medium from RAFLSs, rhS100A4 significantly promoted HUVECs to form tube-like structures in vitro.CONCLUSION:S100A4 protein is highly expressed in synovial tissue of the knee joint in RA patients, and S100A4 stimulates synovial angiogenesis by promoting RAFLSs to generate VEGF, indicating that S100A4 may be used as a potential target for the treatment of RA.

Objective To evaluate the image quality,diagnosis accuracy and dose reduction of split-bolus CT urography (CTU) with low voltage scan and sinogram affirmed iterative reconstruction (SAFIRE).Methods A total of 80 cases of consecutive patients with confirmed or suspected urinary system disease needed CTU examination were divided into two groups (control group and test group) by using random number table.In control group,convention scan (120 kV) with one time injection was used.But low voltage scan (80 kV) with SAFIRE algorithm and split-bolus injection (SBI) was used in experiment group.The radiation dose,image quality and diagnosis accuracy were compared.Results A total of 77 cases completed CTU examination successfully in the two groups,including 39 cases in control group and 38 cases in test group.The effective dose reduced from (26.68 ± 4.07) in control group to (3.93 ± 0.85) mSv in test group (t =-33.78,P ＜ 0.05).Subjective image quality score was (4.49 ± 0.79) in control group and (4.39 ± 1.53) in test group,with no significantly statistical difference (Z =2.71,P ＞ 0.05).Signal-to-noise ratio (SNR) of objective image quality in test group was higher than that in control group (127.3±15.9 vs.109.6 ± 13.2,t =4.49,P＜0.05).But there was no significantly statistical difference in contrast-to-noise ratio (CNR) between control group(100.8 ± 12.9)and test group (109.0 ± 14.4,P ＞ 0.05).For diagnosis accuracy,no statistical difference were found between two groups(84.62％ and 81.58％,P ＞ 0.05).Conclusions The combination of low voltage scan with SAFIRE algorithm and split-bolus injection CTU could reduce the radiation dose significantly,but the objective image quality,CNR (except SNR) of subjective image quality and diagnosis accuracy were all unaffected obviously.

Purpose: Long non-coding RNAs (lncRNAs) may act as oncogenes in small-cell lung cancer (SCLC). Exosomes containing lncRNAs released from cancer-associated fibroblasts (CAF) accelerate tumorigenesis and confer chemoresistance. This study aimed to explore the action mechanism of the CAF-derived lncRNA maternally expressed gene 3 (MEG3) on cisplatin (DDP) chemoresistance and cell processes in SCLC. Materials and Methods: Quantitative real-time PCR was conducted to determine the expression levels of MEG3, miR-15a-5p, and CCNE1. Cell viability and metastasis were measured by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-h-tetrazolium bromide and invasion assays, respectively. A xenograft tumor model was developed to confirm the effect of MEG3 overexpression on SCLC progression in vivo. Relationships between miR-15a-5p and MEG3/CCNE1 were predicted using StarBase software and validated by dual luciferase reporter assay. Western blotting was used to determine protein levels. A co-culture model was established to explore the effects of exosomes on MEG3 expression in SCLC cell lines. Results: MEG3 was overexpressed in SCLC tissues and cells. MEG3 silencing significantly repressed cell viability and metastasis in SCLC. High expression of MEG3 was observed in CAF-derived conditioned medium (CM) and exosomes, and promoted chemoresistance and cancer progression. Additionally, MEG3 was found to serve as a sponge of miR-15a-5p to mediate CCNE1 expression. Overexpression of miR-15a-5p and knockout of CCNE1 reversed the effects of MEG3 overexpression on cell viability and metastasis. Conclusion MEG3 lncRNA released from CAF-derived exosomes promotes DDP chemoresistance via regulation of a miR-15a-5p/CCNE1 axis. These findings may provide insight into SCLC therapy.

Objective To evaluate the efficacy and safety of short-term sensor-augmented insulin-pump (SAP) therapy for poorly controlled patients with type 1 diabetes mellitus (T1DM).Methods Sixty T1DM patients with glycosylated hemoglobin (HbA1c)>9.0% were randomly assigned to 2 groups treated with SAP or multiple daily insulin injection ( MDI) for 6 days, then all patients converted to MDI therapy. Results Compared with MDI group and before therapy, the mean blood glucose concentration ( MBG) , SD of blood glucose, mean amplitude of glycemic excursion ( MAGE) and 24-h area under curve at 10.0 ( AUC10.0 ) levels in SAP group significantly decreased after 6-day therapy ( compared with MDI group:t=1.761,P=0.028, t=2.569,P=0.037, t=2.712,P=0.020, t=2.985,P=0.014, compared with before therapy:t=3.128,P=0.006, t=2.689,P=0.024, t=2.966,P=0.013, t=3.076,P=0.009);while there was no difference in 24-h area under curve at 3.9 (AUC3.9) between groups (P>0.05).After 1 month follow-up HbA1c levels decreased in SAP group (t=2.344,P=0.023) and were significantly lower than those in MDI group (t=1.844, P=0.035).There was no difference in daily insulin dosage, fasting C peptide (FCP) and postprandial 2h C peptide (2hCP) between two groups (P>0.05).Age (t=2.125, P=0.012) and SAP therapy (t=3.376, P=0.009) were independently correlated with the HbA1c after 1 month.Conclusion Short-term SAP therapy is effective and safe for poorly controlled T1DM patients with rapid glucose lowering and glycemic excursions reduction.

Objective To evaluate the clinical value of ultrasonography in the diagnosis of carotid plaque neovascularization .Methods 32 patients with carotid artery plaques diagnosed by conventional ultrasonography were enrolled.The patients were followed up for contrast-enhanced ultrasonography (CEUS) and ultrasonography micro-vascular imaging(SMI),and the results of the two-dimensional detection of carotid plaque and plaque neovasculariza-tion were compared .Results A total of 63 plaques were detected by SMI , including 39 hypoechoic plaques , 19 episodes of echo patches ,58 of plaques ,and 17 hypoechoic plaques .The diagnostic rate of neovascularization was 10.34％.Among the 113 carotid plaques,48 carotid plaques were detected by SMI ,46 carotid plaques were detected by CEUS.The distribution of neovascularization was similar to that of CEUS ,and the neovascularization of SMI and CEUS was better(Kappa=0.669,P<0.001).Conclusion For the diagnosis of carotid plaques ,ultrasonography can accurately detect the number , location and neovascularization of plaques , and the accuracy of carotid plaques is effective.It provides a radiographic basis for the diagnosis and early intervention of patients ,which has great signifi-cance to the prevention of stroke and cardiovascular and cerebrovascular adverse events .It is worthy of popularizing and application .