Objective To develop a superparamagnetic iron oxide (SPIO)-based MR probe containing vascular endothelial growth factor(VEGF) to investigate their biological and chemical properties and targeting effect of colorectal cancer cells in vitro. Methods The anti-VEGF-SPIO probe was fabricated with VEGF antibody and SPIO through chemical method. Its biological and chemical properties and reflexivity were tested with SDS-PAGE and MRL The SW620 cells incubated with anti-VEGF-SPIO probe for 30, 60 and 90 minutes respectively and compared with marrow mesenchymal stem cell at 37℃. The comparison among groups was conducted by using analysis of variance and LSD-t test. The MRI results were confirmed by the Prussian blue staining. The comparison among groups was performed by analysis of variance and factorial experiment. Results SPIO-based MR probe containing VEGF was successfully contributed and isolated. The reflexivity of anti-VEGF-SPIO probe was 0.0426×10~6 mol/s. The immunofluorescence and prussia blue stain proved high expression of VEGF in SW620 cells. Anti-VEGF-SPIO probe and SW620 cellscombined at 37℃ in vitro MRI proved the SW620 cells incubated with anti-VEGF-SPIO probe appeared hypointense on T_2WI and T_2~* WI. MR signal were 392±7,91±8,264±10 for 30, 60 and 90 minutes respectively, which were statistically different from that before incubation 679±12 (F=4735.489, P< 0.01). The intensity decreased most significantly at 60 minutes in vitro. Its MR signal 82±7 were statistically different compared with marrow mesenchymal stem cell 689±43, t=39.167,P<0.05). While SW620 cells incubated without SPIO were not statistically different compared with marrow mesenchymal stem cell, which were 419±59 and 400±41 respectively(t=-0.718,P>0.05). Conclusion Nanoscale iron particles containing the anti-vascular endothelial growth factor molecular probe can evaluate tumor angiogenesis at the receptor level, which provides a new way of the tumor angiogenesis diagnosis and anti-angiogenesis therapy.

Acupuncture Therapy ; Aged ; Female ; Humans ; Male ; Middle Aged ; Pneumoconiosis ; complications ; therapy ; Pulmonary Disease, Chronic Obstructive ; etiology ; therapy ; Treatment Outcome

Objective　To investigate the expression of LPS receptor-CD14(CD14) on the membrane of Kupffer′s cells (KCs) induced by Lipopolysaccharide (LPS )and its role in activation of KCs and production of cytokines. Methods　KCs were isolated by collagenase perfused Wistar rats and routinely cultured in 24-well dishes for 12 h. Cells were harvested and adjusted to a concentration of 1×106/ml/well and were devided into two groups. Group of LPS: KCs were induced with different concentration of LPS (0, 100 ng/ml, 1 μg/ml and 100 μg/ml). Group of PI-PLC: KCs were pre-incubated for 30 min with one unit of phophatidy linositol specific phospholipase C (PI-PLC) before different concentrations of LPS were added. KCs were cultured for 30 and 60 min respectively. Supernatants were then collected for measuring the level of TNFα and IL-6. Cells were stained by indirect immunofluorescent method ( rabbit anti-CD14 antibody and goat anti-rabbit IgG conjugated with FITC ) and analyzed with flow cytometer (FCM). The percentage and mean fluorescence intensity (FI) of CD14-positive cells were taken as the indexes. Results　In LPS group, after incubation of cells with increasing concentration of LPS, a significant increase in the percentage of CD14 positive KCs were found and the mean FI was stronger when compared with the control points or the group of PI-PLC. The levels of TNFα and IL-6 in supernatant also increased (P<0.01). In group of PI-PLC, decreased percentage of CD14 positive KCs and weakened mean FI were found when compared with group of LPS. The increasing production of TNFα and IL-6 slowed down in the group of PI-PLC. Conclusion　CD14 expression of KCs might be up-regulated by LPS with increase of some cytokines. The production of cytokines in KCs induced by LPS is partially inhibited by PI-PLC.

Objective To compare the efficacy of weight loss,metformin and rosiglitazone in women with polycystic ovary syndrome(PCOS).Methods A randomized controlled trial(RCT)was carried out in Peking Union Medical College Hospital(PUMCH),one hundred and six women with PCOS were assigned to three intervention groups:weight loss,weight loss and metformin,weight loss and rosiglitazone group.Patients were treated with weight loss(diet and exercise),weight loss and mefformin (500 mg three times daily),weight loss and rosiglitazone(4 mg once daily)for three months.Sixty patients completed treatments.Basal body temperature(BBT),total testosterone as well as fasting serum insulin levels and lipid were measured and compared in all patients before and after weight loss.Results No significant differences were found in the baseline characteristics among three groups.In weight loss group 51%(22/43)patients completed treatment,and 23%(5/22)patients resumed ovulation.In weight loss and mefformin group 58%(21/36)patients completed treatment,and 43%(9/21)patients resumed ovulation.In weight loss and rosiglitazone group 63%(17/27)patients completed treatment,and 59% (10/17)patients resumed ovulation.Ovulation rate was significantly higher in weight loss and rosiglitazone group than in weight loss group.There was no significant difference among three groups in body mass index (BMI),waist circumference,waist-hip ratio(WHR),sex hormone,serum fasting insulin and lipid level after treatment.Conclusion Weight loss,metformin and rosiglitazone all can improve ovulation each.

ObjectiveTo discuss the effect of evidence-based nursing in improvement of unhealthy emotion and treatment compliance of patients undergoing painless gastroscopy. Methods134 patients from May 2008 to December 2010 undergoing painless gastroscopy were chosen as study object.According to voluntariness of the patients and their families,they were divided into the evidence-based nursing group (70 cases) and the routine psychological care group (68 cases).The satisfaction degree with nursing,unhealthy emotion,and the compliance during treatment process were evaluated with SAS and SDS.ResultsThe satisfaction degree of patients in the evidence-based nursing group was 92.86％,higher than 79.41％ in the routine psychological care group.No significant difference was shown in SAS and SDS score before treatment between two groups,but unhealthy emotion and treatment compliance after treatment significantly improved,and the improvement degree of the evidence-based nursing group was more evident. ConclusionsApplication of evidence-based care model in painless gastroscopy has more obvious advantages in improvement of unhealthy emotions and treatment compliance compared with routine nursing.It has more important value for clinical practice and is more conducive to improve the quality of life of patients.

Objective To explore the risk factors of diabetic nephropathy.Methods According to the excretion rate of proteinuria,90 patients were divided into 3 groups:normal diabetic proteinuria group (DM),diabetic micro-proteinuria group (DN1),and clinical diabetic proteinuria group (DN2).We compared patients'ages,diabetic course,cholesterol,triglyceride,glycosylated hemoglobin,high density lipoprotein cholesterol (HDL),low density lipoprotein cholesterol (LDL),serum p-selectin,serum C-reactive protein,urinary monocyte chemotactic protein,and proteinuria excretion rate.Logistic regression analysis was used to analyze the relation between DN and various factors.Results Differences among these groups were statistically significant in type 2 diabetic course,HDL,LDL,p-selectin,C-reactive protein,glycosylated hemoglobin,and urinary monocyte chemotactic protein (P ＜ 0.05).Logistic regression analysis showed that diabetic course,LDL,C-reactive protein,p-selectin,and urinary monocyte chemotactic protein were independent risk factor (OR values were 2.238,1.062,6.723,1.166,and 1.046).Conclusions Occurrence and severity of DN had relationship with course of diabetes,microvascular lesions,and inflammatory reaction.Emphasis on monitoring and evaluation of the DN-related factors would contribute to the prevention and treatment of DN.

Objective To investigate the expression of microRNA -216a(miR -216a)in patients suf-fering with breast cancer ,and identify the function and mechanism of miR -216 a on autophagy .Methods The expression of miR-216 a in 30 tumor tissues and paired normal tissue of breast cancer were detected by qRT -PCR.Inhibiton of miR-216a in MCF-7 cell lines was done by transfection of miR -216a inhibitor ( AMO-216a).Cell viability was detected by MTT assay .The level of Beclin 1 was detected by western blot .Results The level of miR-216 a was significant elevated in tumor tissue .Cell viability was markedly decreased owing to inhibition of miR-216a in MCF-7 cells.The level of Beclin 1 was significantly increased by transfection of miR-216a inhibitor in MCF-7cells(P<0.05).Conclusion The level of miR-216a is increased in breast canc-er tissue, and it might at least in part promote breast cancer via downregulating Beclin 1 and affecting autophagy .

?Advances in genome-wide analysis have revealed that up to 90%of the human genome is transcribed.However, only approximately 1% of RNA transcripts encode proteins, and the remaining transcripts are noncoding RNAs.Noncoding RNAs can be roughly divided into small noncoding RNAs (<200nt ) and long noncoding RNAs ( LncRNAs, >200nt ). Small noncoding RNAs include microRNAs, transfer RNAs and small nucleolar RNAs, whereas the long noncoding RNAs comprise ribosomal RNA, natural antisense transcripts, etc. Although the biosynthesis and biological activities of microRNAs are well studied through bioinformatics and active biological molecules analysis, the understanding of LncRNAs on these aspects is still limited.LncRNAs play multiple roles in regulating gene transcription and translation, and epigenetics.Aberrant LncRNAs expression can occur in various pathological processes and significantly related to the pathogenesis or poor prognosis of ophthalmological diseases. In this review, we will focus on the characteristics and regulatory functions of LncRNAs that are commonly associated with ophthalmological diseases.

Objective To investigate the antibiotic resistance of Acinetobacter baumannii,and to identify the risk factors for fatality of Acinetobacter baumannii bloodstream infection.Methods A retrospective review was conducted on 80 patients with Acinetobacter baumannii bloodstream infections admitted in Tianjin General Hospital during January 2011 to May 2014.Clinical data including demographic information,the ward of stay,underlying diseases,treatment,invasive procedures,antibiotic resistance,acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score at admission were collected.Multivariate Logistic regression analysis was performed to identify the risk factors for fatality.Results There were ≥90％ strains resistant to ceftazidime,ceftriaxone and cefoxitin,and 66.3％ strains were resistant to imipenem.While most strains were sensitive to cefoperazone/shubatan and tigecycline,and the resistance rates were 7.5％ and 2.5％,respectively.ICU admission (OR =6.67,95％ CI:2.01-22.07,P ＜0.01),multi-drug resistance (OR =3.55,95％ CI:1.30-9.69,P ＜ 0.05),APACHE Ⅱ score ≥ 19 (OR =39.00,95％ CI:9.87-154.09,P ＜ 0.01),artery catheterization (OR =3.24,95％ CI:1.16-9.04,P ＜ 0.05),central venous catheterization (OR =3.33,95％ CI:1.22-9.12,P ＜ 0.05),tracheal catheterization (OR=3.60,95％CI:1.31-9.88,P＜0.05),tracheostomy (OR=3.21,95％CI:1.19-8.66,P＜0.05),and other invasive procedures (OR =3.00,95％ CI:1.11-8.08,P ＜ 0.05) were the risk factors for fatality.Conclusion Invasive procedures and multi-drug resistance are associated with increased fatality of patients with Acinetobacter baumannii bloodstream infection.

Objective To investigate the value of dynamic contrast-enhanced MRI parameters in the diagnosis of cervical squamous cell carcinoma. Methods A retrospective analysis of dynamic contrast enhanced MRI in 55 patients with pathologically diagnosed cervical squamous cell carcinoma without prior treatment. They were divided into three groups based on grade of differentiation: well differentiated ( 6 patients),moderately differentiated(28 patients)and poorly differentiated group(21 patients). Capacity volume transfer constant (Ktrans),exchange rate constant(Kep) and extravascular extracellular volume fraction (Ve) were measured in each group of patients, and comparing the correlation with ANOVA, DCE-MRI parameters and grading of squamous differentiation using Spearman rank correlation analysis. Results Ktrans of the poorly, moderately and well differentiated cervical squamous cell carcinoma were (2.42±0.58),(1.71± 0.78),(1.27±0.78)/min respectively, Kep were (4.17±1.23),(3.08±1.58),(2.55±0.87)/min respectively, Ve were 0.60 ± 0.12,0.60 ± 0.19,0.43 ± 0.17 respectively. Statistical difference of Ktransand Kep were found among the subgroups of different pathological grading.(F values were 7.518 and 4.234,P all<0.05), Ve difference was not statistically significant (F=2.382, P>0.05). Statistical difference of Ktransand Kep were seen in multiple comparisons, between the groups of poorly and moderately differentiated groups poorly and well differentiated groups (P all<0.05),difference was not statistically significant of Ktransand Kep were seen in the groups of moderately and well differentiated groups(P> 0.05). There were moderate negative correlation between Ktrans,Kep and the pathological degree (r=-0.531 and -0.446, P=0.001 and 0.002), Ve had no correlation between pathological grade (r= -0.220, P = 0.141).Conclusion DCE-MRI parameters Ktrans and Kep reveal perfusion characteristics in different pathological grades of cervical squamous cell carcinoma.