Objective To evaluate the serum Krebs von den Lungen (KL)-6 for the diagnosis of interstitial lung disease (ILD) associated with connective tissue diseases (CTD) and its lung-CT subtypes.Methods Seventy-five CTD patients were employed for this study,44 CTD with ILD and 31 ILD without ILD.The 44 CTD patients with ILD were further divided into different subgroups based on lung-CT imaging and clinical indexes.The enzyme-linked immune sorbent assay (ELISA) was used to measure the serum KL-6 level.For those data that was abnormally distributed,the differences between groups was compared with independent samples nonparametric tests.Results The level of serum KL-6 in the CTD with ILD was significantly higher than that without ILD [(1 118±877) U/ml vs (253±144) U/ml] (Z=-6.047,P＜0.01).By using a criterion of 500 U/ml,our data suggested that the serum KL-6 level was useful for the ILD-CTD diagnosis;the sensitivity,specificity,positive and negative predictive values were 72.7％,87.1％,88.9％ and 69.2％,respectively.The serum KL-6 level,however,showed no statistical differences between ILD subtypes,i.e.,usual interstitial pneumonia (UIP),nonspecific interstitial pneumonia (NSIP) and indeterminate [(1 104±843) U/ml,(1 242±1 039) U/ml,(815±400) U/ml,respectively] (x2=0.35,P=0.84).Our data further showed that the KL-6 level was significantly higher in CTD-ILD patients with intensive lung lesions than those with limited lung lesions [(1 910±918) U/ml vs (459±268) U/ml] (Z=-4.364,P＜0.01).In addition,the KL-6 level was significantly higher in active ILDs than in inactive ILDs[(1 478±917) U/ml vs (598±475) U/ml] (Z=-3.915,P＜0.01).Conclusion The serum KL-6 is a valuable biomarker for CTD-ILD diagnosis and even for the assessment of the extent and activity of lung damage.

Sarcopenia and osteoporosis are two common diseases with adverse effects on the health of the elderly and share many characteristics.As target organs of the two diseases,muscles and bones are closely connected,not only in anatomy and physiology,but also in pathophysiological processes.Initially,mechanical stimulation was conducted to explain the relationship between muscle and bone at the macroscopic level.Currently,research is increasingly focused at the cellular and molecular levels.Both muscle and bone tissues can secrete a number of growth factors,cytokines,polypeptides,and so on.Myokines include fibroblast growth factor-2 (FGF-2),myostatin,irisin,insulinlike growth factor-1 (IGF-1),interleukins,musclin,among others.Osteokines comprise osteocalcin,fibroblast growth factor-23,IGF-1,vascular endothelial growth factor,etc.In this review,we summarize the roles of myokines and osteokines in muscle-bone interactions.

Objective To describe the status of nurse work engagement and to explore the relationship between work engagement and work-related flow experience.The study results provided the basis for how the nurse managers stimulate enthusiasm of nurses and let them devote themselves to work.Methods A convenience sample of 127 nurses from one major hospitals in Beijing city was recruited.Work Engagement Scale and Work-related Flow Experience Questionnaire were used in this study.Results The scores of work engagement were (3.18±0.59),at moderate level.Age,education level and professional titles were the influential factors of nurses' work engagement.The scores of work-related flow experience were (3.48±0.45),at moderate level.The scores of clear goals,focus on tasks,balance of skills and challenges were the top three dimensions of the work-related Flow Experience Questionnaire.Except for the two dimensions,the integration of action and awareness and the weakening of self-awareness,other dimensions of the work-related flow experience appeared statistically significant correlation to the scores of work engagement (P＜0.05 or P＜0.01).Most were moderate positive correlations.Conclusions Both the work engagement and the work-related flow experience are at moderate level.The nurse managers needed to take active measures to enable nurses to have more positive experiences and happiness,so as to enhance nursing work input,to improve quality of care and job satisfaction.

ObjectiveTo investigate the correlation between the level of resistin and the insulin resistance(IR) and the incorporation of microamount albuminuria(MA) of type 2 diabetes mellitus (T2DM).MethodsTwo hundred and twenty T2DM patients and 40 normal subjects (control group) were enrolled in this study.Two hundred and twenty T2DM patients were divided into 4 groups,IR group (group A,79 cases),non-IR group (group B,48 cases),IR complicating MA group (group C,51 cases),non-IR complicating MA group(group D,42 cases).The fasting serum resistin was measured by enzyme-linked immunosorbant assay (ELISA),and the fasting plasma glucose (FPG),glycosylated hemoglobin (HbA1c),fasting insulin (FINS) was also determined.ResultsThe level of fasting serum resistin in group A,B,C and D was higher than that in control group [(33.45 ± 1.37),(23.36 ± 1.47),(44.45 ± 1.39),(37.45 ±1.57) μ g/L vs.( 17.44 ± 1.26 ) μ g/L],and there was significant difference among 5 groups (P ＜ 0.01 ).The level of fasting serum resistin in group A was higher than that in group B (P ＜ 0.01 ),and the level of fasting serum resistin in group C was higher than that in group D (P ＜ 0.01 ).The level of fasting serum resistin was both higher in group C and D than that in goup A and B (P＜ 0.01 ).Correlation analysis showed the fasting serum resistin was positively correlated with body mass index(BMI),FPG,HbA1c and FINS in group A(r =0.35,0.46,0.37,0.49,P ＜0.05),and the fasting serum resistin was positively correlated with HbA1c,BMI,systolic blood pressure and diastolic blood pressure in group C(r =0.45,0.32,0.37,0.29,P ＜ 0.05 ).ConclusionsSerum resistin may participate in the process of IR and the formation of MA.It may become one of the diagnostic standard of the IR and one of the important index to estimate the MA.

Vibrio parahaemolyticus has been considered as one of the most important foodborne bacterial pathogens.The loop-mediated isothermal amplification(LAMP) that amplifies DNA with high specificity and rapidity under an isothermal condition was applied for rapid detection of this pathogen for the first time.A set of four primers,two outer and two inner primers,was designed specifically to recognize the thermolabile hemolysin gene(tlh) of V.parahaemolyticus.The LAMP reaction mix was optimized.The most optimal reaction temperature and time of the LAMP assay for the tlh gene were 60℃ and 60min,respectively.Genomic DNAs from 28 bacterial strains including 14 V.parahaemolyticus strains were amplified using LAMP,and no amplicon was observed in other bacterial strains.The detection limit of this LAMP assay was around 90 fg of V.parahaemolyticus genomic DNA and 24 colonies forming units for pure cultures.In addition,this method was applied to detect artificially contaminated food samples,and the detection limit was 89 cfu/g for non-cultured artificially contaminated food samples.These results suggested that detection of V.parahaemolyticus by LAMP is an effective and low-cost procedure with high specificity and sensitivity that requires no specialized equipment.This assay is expected to become a valuable tool for rapid detection and identification of V.parahaemolyticus.

Oligosaccharides are one of the essential physiological constituents of glycoproteins and glycolipids on mammalian cell surfaces and microbial metabolites. They have considerable potential as therapeutics but are only now slowly assuming this important role. One of the reasons for their slow development has been the considerable difficulty in synthesizing oligosaccharides on the scale necessary for their clinical evaluation. Classical chemical and enzymatic methods both have limitations in synthesizing large-scale oligosaccharides. In recent years, the rapid progress on molecular biotechnology has promoted the development of retaining glycosidases in oligosaccharides synthesis, which led to the production of a novel class of enzymatic activities termed the glycosynthases. These new enzymes are retaining glycosidase mutants in which the catalytic nucleophile has been converted to a non-nucleophilic residue,synthesizing oligosaccharides in high yields ( the highest yields reach 99%) without any hydrolysis. Furthermore thioglycoligases and thioglycosynthases have been developed subsequently in the past three years. Glycosynthases can be screened in high-throughput assay by the two-plasmid system and the yeast three-hybid system respectively. Their activity can be significantly enhanced by substituting alternative residues for nucleophile, additional random mutations and optimizing reaction conditions. Their regioselectivity can be modified through changes in receptors.

Objective To investigate the effect of vascular tortuosity and bending radius on the new type knitting stents (LVIS stent ) releasing on the cavernous sinus segment of internal carotid artery. Methods From December 2015 to January 2016,31 consecutive patients with wide-neckedaneurysm treated with LVIS stents and the proximal end of the stent released in the cavernous segment at the Department of Neurosurgery,Changhai Hospital,the Second Military Medical University were enrolled. According to whether the stents completely adhered to the walls or not after the first release,they were divided into two groups:a satisfactorily release group (n =23 )or an unsatisfactorily release group (n =8 ). The differences of vascular tortuosity and bending radius of the 2 groups were compared.Results Thevascular tortuosities of the satisfactorily release group and the unsatisfactorily release group were 118° ± 23° and 147° ± 19° respectively. There was significant difference (P=0. 028). The vascular bending radii were 3. 4 ± 0. 7 mm and 2. 8 ± 0. 7 mm respectively. There was significant difference (P=0. 042). The mean vascular tortuosity was larger and the mean vascular bending radius was smaller in the unsatisfactorily release group. Conclusions The greater the vascular tortuosity,the smaller the vascular bending radius may be connected with the unsatisfactorily release in the LVIS stent. The evaluation of vascular tortuosity is conductive to the guidance of the stent release technique before stent implantation.

Objective To assess the reliability and validity of the effect evaluation index system for health education of coronary heart disease.Methods A total of 306 patients with coronary heart disease in four third-grade and A-level hospitals extacted by convenient sampling method were surveyed.Project analysis,exploratory factor analysis,correlation analysis and so on were applied to analyze and select items.Then the Cronbach's alpha coefficient,test-retest reliability,and content validity of the scale were tested.Then the original system was modified and the eventual system was formed.Results The scale was consisted of 8 first-dimensions and 35 indexes.The Cronbach's α of the total system was 0.832,and the α of subscales were from 0.629 to 0.882.The test-retest reliability of the total system was 0.966,and the testretest reliability of subscales were from 0.848 to 0.942.The S-CVI/Ave of system was 0.99,and the S-CVI/UA of indexes was 0.91.The Pearson correlation coefficient of the indexes with their dimensions were from 0.574 to 0.916,which were higher than the coefficient of the indexes with other dimensions.Factor analysis supported the eight-factor structure of the system,which could explain 65.61％ of the total variance and the factor loading of each index were from 0.430 to 0.938.Conclusions The system is reliable and valid,and can provide a unified reference standard for effect evaluation of health education of coronary heart disease.

Objective To establish a scientific,standard and comprehensive effect evaluation index system for health education of coronary heart disease.Methods Based on KABP (knowledge,attitude,belief,practice,KABP) model of health education,the effect evaluation index system for health education of coronary heart disease was formulated by documentary analysis,qualitative research,questionnaire survey,Delphi method,and analytic hierarchy process.Results The authoritative coefficient,determination coefficient and familiarity coefficient was 0.89,0.91,0.86,respectively.The coordination coefficients of the first-dimension and the second-dimension were 0.295 and 0.302,respectively.The index system consisted of 6 first-dimensions,45 second-dimensions.The weight coefficient of health knowledge,health belief,health behavior,physical signs,quality of life,and satisfaction degree of health education was 0.153 8,0.153 8,0.366 1,0.086 3,0.153 8,0.086 3,respectively.Conclusions The effect evaluation index system for health education of coronary heart disease is reliable and valid,which can provide a quantitative basis for effect evaluation of health education.

Objective To observe the therapeutically effect of kangnao liquid on Pi3k mRNA and Aktm RNA ex-pressions in rats with focal cerebral ischemia-reperfusion (I/R) injury. Methods 180 male SD rats were randomly divided into 6 groups:sham operated group, model group, three kangnao liquid groups (high-dose, medium-dose and low-dose) and nimodipine group. Rats in kangnao liquid groups were administrated with kangnao liquid of 24 g/(kg · d), 12 g/(kg · d) and 6 g/(kg · d), orally once a day. Rats in nimodipine group were given nimodipine 1 mg/(kg · d). Rats in model group and sham group were treated with the same volume of distilled water for 7 days. The animal model of middle cerebral artery occlusion (MCAO) was established by a monofilament method from right internal carotid artery. The neurological evaluation was per-formed 24 h after reperfusion. The in situ hybridization was used to investigate the expression levels of Pi3k mRNA and Akt mRNA in rats on 12 h, 24 h, 48 h, 72 h and 168 h after ischemia for 2 h. Results Compared with model group, neurological functions were improved significantly in kangnao liquid groups. The expression levels of Pi3k mRNA and Akt mRNA were al-so significantly higher in kangnao liquid groups than those of model group. The expression levels of Pi3k mRNA and Akt mRNA were significantly higher in nimodipine group than those of model group, but which were lower compared with those of high-dose and medium-dose kangnao liquid groups. Conclusion Kangnao liquid can protect nerve cells by enhancing the expressions of Pi3k mRNA and Akt mRNA in rats with cerebral ischemia-reprefusion injury.