Objective To construct a scientific and objective assessment to value nurse′s ability of scientific research in order to provide an objective unified standard and operable method to value nurse′s ability of scientific research and provide a standard for medical institutions to select nurses of scientific research. Methods After searching literatures and interviewing 7 experts, Delphi method was used to construct primary variables of nurse′s ability of scientific research. Then a second interview was given to each of 18 experts. The variables were weighted using analytic hierarchy process. Results Variables to assess nurse′s ability of scientific research included 2 first grade indices, 9 second grade indices and 35 third grade indices. Questionnaire return rates for two rounds of interviews were 84.00%(21/25) and 85.71%(18/21), respectively. Degree of authority Cr was 0.938. Scores of variables′importance ranged at 4.06-4.96. Ratios of full scores ranged at 33.33%-94.44%. Variable coefficients ranged at 0.05-0.25. The weight coefficients of 3 first grade indices (scientific research accumulation, explicit ability of scientific research, and intrinsic ability of scientific research) were 0.475 and 0.525, respectively. Conclusions The nurse′s ability of scientific research assessment system based on Delphi method and analytic hierarchy process is scientific and objective. This system combines quantitative and qualitative variables. It thus can calculate the ability of nurse′s scientific research according to the three grade indices. It is operable to be used to assess the ability of nurse′s scientific research.

Lymphoma is a malignancy of mature lymphocytes. Signalling through the B cell receptor ( BCR ) is central to the development and maintenance of B cells. In light of the numer-ous proliferative and survival pathways activated downstream of the BCR, it comes as no surprise that malignant B cells would co-opt this receptor to promote their own growth and survival. Compounds that inhibit various components of this pathway, in-cluding spleen tyrosine kinase(Syk), Bruton’s tyrosine kinase (Btk), and phosphoinositol-3 kinase(PI3K), have been devel-oped. In this paper,the B-cell receptor signaling and its targeted inhibitors of lymphoid malignancies are reviewed.

The definition of critical quality attributes of Chinese materia medica ( CMM) was put forward based on the top-level design concept. Nowadays, coupled with the development of rapid analytical science, rapid assessment of critical quality attributes of CMM was firstly carried out, which was the secondary discipline branch of CMM. Taking near infrared (NIR) spectroscopy as an example, which is a rapid analytical technology in pharmaceutical process over the past decade, systematic review is the chemometric parameters in NIR model evaluation. According to the characteristics of complexity of CMM and trace components analysis, a multi-source information fusion strategy of NIR model was developed for assessment of critical quality attributes of CMM. The strategy has provided guideline for NIR reliable analysis in critical quality attributes of CMM.
Materia Medica ; standards ; Medicine, Chinese Traditional ; standards ; Spectroscopy, Near-Infrared ; methods

Aim To explore the protective effect of lo-ganin ( an active component in Cornus officinalis ) on podocyte injury induced by advanced glycation end products ( AGEs) and its possible mechanism. Meth-ods Mouse podocytes were cultured in vitro and di-vided into Normal group, model group ( AGEs group) , loganin group and aminoguanidine group ( set as posi-tive control) . After being incubated with loganin( final concentrations are 0. 1, 1, 10 μmol · L-1 ) for 1 h, podocytes were stimulated by AGEs of 100 mg · L-1 for 24 h. Then, the cell viability was measured by u-sing MTT method. Podocytes apoptosis was evaluated by Hoechst33342/PI staining and flow cytometry. Re-ceptors of advanced glycation end products ( RAGE ) ,desmin and apoptosis-related protein like Bax, Bcl-2, cleaved caspase-3 in podocytes were detected by Western blot. Results Loganin ameliorated podocyte injury induced by AGEs, down-regulated the expression of desmin and RAGE. Loganin also reduced the apoptotic rate of podocytes and decreased the ratio of Bax/ Bcl-2 and the expression of pro-apoptotic protein cleaved caspase-3 in podocytes. Conclusion Loganin could ameliorate podocyte injury, and its mechanism may be related to the decrease of the expression of RAGE and inhibition of the apoptotic pathway.

Objective To evaluate changes of regional cerebral metabolism by proton MR spectroscopy (~1H-MRS) in patients with minimal hepatic encephalopathy (MHE) and to correlate these changes with the neuropsychological test. Methods Fifty-four patients with cirrhosis including nine patients with hepatic encephalopathy (HE),23 patients with MHE,22 patients without HE and 13 controls underwent neuropsychological tests and ~1H-MRS scanning. The volumes of interest included occipital gray matter and left parietal white matter regions. Ratio of spectral peak areas of N-acetylaspartate (NAA),choline (Cho),myo-inositol (mI),and glutamine/glutamate (Glx) relative to creatine (Cr) were acquired. Statistical analysis was conducted using independent t test and one-way analysis of variance. The results of different groups were compared by using the nonparametric Mann-Whitney U test with Bonferroni correction. Correlations among the ~1H-MRS ratios, the grade of HE, neuropsychological test and ammonia data were calculated with Spearman correlation test. Results The ratios of NAA/Cr,Cho/Cr,mI/Cr,Glx/Cr of the occipital gray matter and left parietal white matter regions in patients with cirrhosis are 1.55±0.12,0.48±0.10,0.42±0.14,2.52±0.48 and 1.73±0.17,0.75±0.16,0.42±0.16,2.75±0.59respectively,and they are 1.53±0.10,0.48±0.09,0.51±0.11,2.20±0.39 and 1.69±0.15,0.82±0.14,0.53±0.12,2.40±0.40 in patients without HE,1.58±0.13,0.48±0.08,0.38±0.13,2.62±0.39 and 1.78±0.18,0.74±0.14,0.38±0.15,2.84±0.58 in patients with MHE,1.54±0.12,0.50±0.13,0.29±0.07,3.04±0.31 and 1.70±0.19,0.62±0.16,0.29±0.07,3.37±0.38 inpatients with HE.Compared with controls, decreased mI/Cr and Cho/Cr ratios and elevated Glx/Cr ratios were found in patients with cirrhosis (t=3.196,9.394,-6.527,P＜0.01,occipital gray matter. t=5.592,9.717,-6.681,P＜0.01,left parietal white matter＝ and in subgroup of patients without HE, with MHE and HE (F=5.097,25.896,20.204,P＜0.01,occipital gray matter.F=16.435,28.660,21.283,P＜0.01,left parietal white matter).Significant difference in these metabolic alterations was also found among the different groups of cirrhosis especially the ratios of Glx/Cr in occipital gray matter and left parietal white matter (P＜0.0084).The ratios of mI/Cr also significantly altered between patients without HE and with MHE (P＜0.0084).There was a significant negative correlation between the ratios of Cho/Cr,mI/Cr and the grade of HE (P＜0.01＝ and a significant positive correlation between the ratios of Glx/Cr and the grade of HE (r=0.709,P＜0.01,occipital gray matter; r=0.720,P＜0.01,left parietal white matter＝.NCT-A and DST of controls is (49±8) s and 39±6.They are (134±37),(83±26),(64±22) second and 15±2,25±9,35±8 in patients with HE,MHE and without HE respectively.The metabolic alterations of Cho/Cr,mI/Cr,Glx/Cr correlated significantly with neurepsychological tests in all subjects (P＜0.01＝.There was a significant positive and a negative correlation between the ratios of Glx/Cr and the data of NCT-A and DST respectively (r=0.570,-0.642,occipital gray matter; r=0.541,-0.632,left parietal white matter).The metabolic alterations of Glx/Cr had no correlation with ammonia data as well as other metabolic alterations.Conclusions ~1H-MRS study shows cerebral metabolic alterations of gray and white matter in patients with cirrhosis,especially the reduction in mI/Cr ratio and increase in Glx/Cr ratio. These changes correlate well with the neuropsychological tests and may be useful in predicting the presence of MHE.

Aim To observe the protective mechanism of loganinand morroniside ( active components in Cornus officinalis) on HUVEC injury induced by advanced glycation end products ( AGEs ) .Methods HUVECs were cultured in vitro and divided into control group , model group ( AGEs group ) , loganin group , morroni-side group and aminoguanidine group ( set as positive control).After being incubated with loganin and mor-roniside( final concentrations were 100,10,1 μmol?L-1 ) for 1 h, HUVECs were stimulated by AGEs of 200 mg? L-1 for 24 h.Then, the cell viability was measured by using MTT method .The supernatant was extracted and the levels of NO ,ET-1,MCP-1,VCAM-1 were measured by the corresponding kits .Receptors of advanced glycation end products ( RAGE ) and NF-κB in HUVEC were detected by Western blot .Results Loganin and morroniside could inhibit HUVEC injury induced by AGEs .In model group ,the contents of ET-1,MCP-1,VCAM-1 increased(P<0.01),the content of NO decreased ( P <0.01 ) and the expression of RAGE and NF-κB increased(P<0.01); however,lo-ganin and morronside could reduce the ET-1,MCP-1, VCAM-1contents,increase the NO content and down-regulate the expression of RAGE and NF-κB to differ-ent extents .Conclusion Loganin and morroniside could ameliorate HUVEC injury , and its mechanism may be related to inhibit inflammation , the improve-ment of endothelial cell function , and the decrease of the expression of RAGE .

OBJECTIVE To study the toxicity of zinc oxide nanoparticles (ZnO-NPs) on murine macrophage Ana-1 cells and the mechanism.METHODS Ana-1 cells were incubated with ZnO-NP (2.5-160 mg· L-1).Cell viability was investigated by MTT assay.The integrity of cell membrane was investigated by acridine orange-ethidium bromide (AO-EB) staining.The intracellular uptake of ZnO-NP and the percentage of sub-G1 of Ana-1 cells were detected by flow cytometry.Zinc ions were determined by fluorescent probe.The change of cell viability was studied after chelating zinc ions with ethylene diamine tetraacetic acid (EDTA).RESULTS ZnO-NP 2.5,5,10 and 20 mg· L-1 decreased cell viability of Ana-1 cells (r=0.905,P＜0.05) in a concentration-dependent manner.The cell viability was decreased to 27.9％ after exposure to ZnO-NP 20 mg· L-1.Intracellular uptake of ZnO-NP was increased after Ana-1 cell incubated with ZnO-NP at concentrations ranging from 40 to 160 mg· L-1 (P＜0.05).There were obvious free zinc ions in the cells.EDTA 2.5 mmol· L-1 significantly increased the cell viability decreased by ZnO-NP 20 mg· L-1 (P＜0.05).Chelating free zinc ions significantly mitigated ZnO-NP induced cell toxicity (P＜0.05).CONCLUSION Cytotoxicity and apoptosis of Ana-1 cells induced by ZnO-NP might be related to intracellular uptake of ZnO-NP and release of zinc ions.

Aged ; Aged, 80 and over ; Female ; Fracture Fixation, Internal ; adverse effects ; methods ; Hip Fractures ; surgery ; Humans ; Male ; Middle Aged ; Postoperative Complications ; prevention & control

A bacterial strain which could grow well on the substrate of PAEs as the sole source of carbon and energy was isolated from contaminated sludge in the river of WeiFang in ShangDong province and it was designated as JDC-3. Based on the morphology,biophysical and biochemical properties as well as molecular characteristics,this isolate was preliminarily identified as Delftia sp.. A fragment of phthalate dioxygenase gene was successfully amplified from the genus of Delftia for the first time using a set of degenerate primers. Meanwhile,the degradation capability of JDC-3 was determined by HPLC using DMP as test substrate. The results showed that the optimal pH and temperature were at 7.0～8.0 and 30?C～35?C respectively. The degradation kinetics of JDC-3 was studied in different initial DMP concentration under optimal conditions. The results indicated that the degradation dynamic equation was ln C =-0.06837 t + A when DMP concentration was lower than 300 mg/L,with half life of 12.48 h. The degradation rate decreased and half life of JDC-3 prolonged as the initial concentration kept on increasing.

Objective:To build a performance appraisal index system for medical specialty alliances, as a reference for promoting the development of the alliances in a connotation-based, high quality and sustainable manner.Methods:An index system was initialized by means of policy literature review and brainstorming, which was followed by two rounds of expert consultations to finalize the index system. Each index in the system was weighted through the analytic hierarchy process.Results:A performance appraisal index system of specialist alliances so developed comprised the six level-1 indexes of organization and implementation, hierarchical healthcare, influence capacity, talent cultivation, clinical research and academic research, as well as 31 level-2 indexes. The average scoring of importance and operability of all the indexes was>3.50, while the weights of organization and implementation(0.205 3), talent cultivation(0.178 8)and clinical research indexes(0.165 1)were higher than the rest.Conclusions:The performance appraisal index system of specialty alliances proves highly reliable and scientific, serving a desirable vehicle for the leaders of the alliance to develop cross-regional development of medical specialties.